WO2022267804A1 - 一种资源指示方法和装置 - Google Patents

一种资源指示方法和装置 Download PDF

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Publication number
WO2022267804A1
WO2022267804A1 PCT/CN2022/095006 CN2022095006W WO2022267804A1 WO 2022267804 A1 WO2022267804 A1 WO 2022267804A1 CN 2022095006 W CN2022095006 W CN 2022095006W WO 2022267804 A1 WO2022267804 A1 WO 2022267804A1
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Prior art keywords
tone
rus
pru
index
vru
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PCT/CN2022/095006
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English (en)
French (fr)
Inventor
陆雨昕
刘辰辰
狐梦实
淦明
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to JP2023578991A priority Critical patent/JP7846712B2/ja
Priority to AU2022297375A priority patent/AU2022297375B2/en
Priority to CA3224102A priority patent/CA3224102A1/en
Priority to BR112023026667A priority patent/BR112023026667A2/pt
Priority to KR1020247001962A priority patent/KR20240022639A/ko
Priority to EP22827301.7A priority patent/EP4351235A4/en
Priority to MX2024000228A priority patent/MX2024000228A/es
Publication of WO2022267804A1 publication Critical patent/WO2022267804A1/zh
Priority to US18/543,975 priority patent/US20240121040A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/04—Arrangements for detecting or preventing errors in the information received by diversity reception using frequency diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
    • H04L41/0897—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities by horizontal or vertical scaling of resources, or by migrating entities, e.g. virtual resources or entities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H04L5/0041—Frequency-non-contiguous
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
    • H04W52/36—Transmission power control [TPC] using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Definitions

  • the present application relates to the technical field of communications, and in particular to a resource indication method and device.
  • a low power indoor (LPI) communication mode is defined in related technologies, which imposes strict restrictions on the maximum power and maximum spectral density to be transmitted.
  • the maximum power is 36 decibel milliwatts (decible-milliwatts, dBm), and the maximum spectral power density is 5 decibel milliwatts/megahertz (decible-milliwatts/megahertz, dBm/MHz);
  • the maximum power of a station (station, STA) is 24dBm, and the maximum power spectral density is -1dBm/MHz.
  • the transmission power of the device is limited by the maximum power and the maximum power spectral density at the same time, that is, the transmitted power of the device cannot exceed the maximum power value, nor can it exceed the maximum power spectral density. Therefore, when the maximum power and power spectral density are limited, if you want to send more power to a device, you can achieve the corresponding purpose by widening the corresponding transmission bandwidth. That is to say, the subcarriers allocated to the device become more discrete in the frequency domain, that is, the number of subcarriers per MHz becomes smaller. Since resource units (resource unit, RU) of different sizes can correspond to various combinations of discrete subcarriers, it is necessary to define more RUs or RU combinations, and indicate these RUs or RU combinations.
  • the present application provides a resource indication method and device, so as to increase the transmission power of a device.
  • a resource indication method may be executed by the first communication device, or by a chip having a function similar to that of the first communication device.
  • the first communication apparatus may be a communication device at the receiving end, for example, may be an STA or an AP. In this method, the first communication device may receive resource indication information.
  • the resource indication information may include: resource unit allocation information for indicating one or more first virtual resource units (virtual resource units, VRUs) and site information of sites assigned one or more first VRUs, the first The VRU includes a plurality of continuous subcarriers in the frequency domain; the first communication device determines a first physical resource unit (physical resource unit, PRU) according to the resource indication information, where there is a mapping relationship between the first PRU and the first VRU, The first PRU includes a plurality of discrete subcarrier groups in the frequency domain, and a subcarrier group includes one subcarrier, or includes at least two continuous subcarriers; the first communication device transmits data on the first PRU.
  • resource unit allocation information for indicating one or more first virtual resource units (virtual resource units, VRUs) and site information of sites assigned one or more first VRUs
  • the first The VRU includes a plurality of continuous subcarriers in the frequency domain
  • the first communication device determines a first physical resource unit (physical resource unit, PRU)
  • the first telecommunications device may inform the second telecommunications device that the RUs allocated to the second telecommunications device are VRUs, but the second telecommunications device sends data on the discrete PRUs after continuous VRU mapping. Since continuous VRUs are mapped to discrete PRUs, it is equivalent to reducing the number of subcarriers per MHz, so that the second communication device can support greater transmission power.
  • the mapping relationship includes: the difference between the index of a first VRU among the one or more first VRUs and the index of the corresponding first PRU is a first set value; or, one or The index of one first VRU among the multiple first VRUs is the same as the index of its corresponding first PRU; wherein, the index of one first VRU among the one or more first VRUs is determined according to resource unit allocation information.
  • the first VRU can be mapped to discrete first PRUs according to the index of the first VRU, and the second communication device sends data on the discrete PRUs, so that the second communication device can support greater transmission power.
  • multiple first VRUs may be mapped in a similar symmetrical manner to obtain multiple first PRUs. Since continuous VRUs can be relatively fairly mapped to discrete PRUs in a symmetrical manner, when the number of VRUs allocated by the first communication device is small and the bandwidth is small, the allocated VRUs can also be mapped to discrete PRUs as much as possible.
  • the mapping relationship specifically includes: the maximum resource bandwidth allocated by the second communication device may be greater than or equal to 40 MHz, the maximum resource bandwidth may include at least two 242-tone-RUs, and at least two 242-tone-RUs -Each 26-tone-RU of the 18 26-tone-RUs included in the RU is the smallest unit mapping, and the indexes of the 18 26-tone-RUs are ⁇ 1, 2, 3, 4, 5, 6, 7 respectively , 8, 9 ⁇ , ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m, the indexes obtained after 18 26-tone-RU mappings are ⁇ 1, 11+m, 3 , 13+m, 5, 6, 16+m, 8, 18+m ⁇ , ⁇ 10+m, 2, 12+m, 4, 14+m, 15+m, 7, 17+m, 9 ⁇ , Or ⁇ 10+m, 2, 12+m, 4, 5, 15+m, 7, 17+m, 9 ⁇ , ⁇ 1, 11+m, 3, 13+m, 14+m, 6, 16+ m, 8,
  • the distance between two consecutive VRUs can be made far, and the continuous VRUs can be mapped to discrete PRUs as much as possible.
  • the number of VRUs allocated by the first communication device is large and the bandwidth is large, more discrete PRUs can be obtained. of PRUs.
  • the sequence number of the first VRU is the subcarrier k
  • the sequence number of the subcarrier after the first PRU determined based on the mapping relationship is k', which satisfies the following formula:
  • M t represents the number of the first VRU participating in the mapping in every 20MHz
  • M t is an integer, 1 ⁇ M t ⁇ 9
  • M t * x represents the total number of the first VRU participating in the mapping
  • mod() represents the remainder operation
  • x may represent the number of 20 MHz included in the maximum bandwidth indicated by the foregoing resource unit allocation information.
  • the subcarriers in the VRU can be mapped to the subcarriers on the PRU, and the distance between two consecutive subcarriers can be widened through the above formula, so that the subcarriers contained in the PRU are more discrete.
  • the subcarriers contained in the first VRU can be mapped to the subcarriers contained in the first PRU according to the subcarrier index, and the distance between two consecutive subcarriers is widened, so that the subcarriers contained in the PRU are more discrete.
  • a method for indicating a resource is provided, and the method may be executed by a second communication device, or by a chip having a function similar to that of the second communication device.
  • the second communication apparatus may be a communication device at the sending end, for example, may be an AP.
  • the second communication device sends resource indication information
  • the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and the site of the site to which one or more first VRUs are allocated Information
  • the first VRU includes a plurality of continuous subcarriers in the frequency domain
  • the second communication device receives data on the first physical resource unit PRU, wherein there is a mapping relationship between the first PRU and the first VRU, and the first PRU It includes a plurality of discrete subcarrier groups in the frequency domain, and a subcarrier group includes one subcarrier, or includes at least two continuous subcarriers
  • the second communication device receives data on the first PRU.
  • the mapping relationship includes: the difference between the index of a first VRU among the one or more first VRUs and the index of the corresponding first PRU is a first set value; or, one or The index of one first VRU among the multiple first VRUs is the same as the index of its corresponding first PRU; wherein, the index of one first VRU among the one or more first VRUs is determined according to resource unit allocation information.
  • the mapping relationship specifically includes: the maximum resource bandwidth allocated by the second communication device may be greater than or equal to 40 MHz, the maximum resource bandwidth may include at least two 242-tone-RUs, and at least two 242-tone-RUs -Each 26-tone-RU of the 18 26-tone-RUs included in the RU is the smallest unit mapping, and the indexes of the 18 26-tone-RUs are ⁇ 1, 2, 3, 4, 5, 6, 7 respectively , 8, 9 ⁇ , ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m, the indexes obtained after 18 26-tone-RU mappings are ⁇ 1, 11+m, 3 , 13+m, 5, 6, 16+m, 8, 18+m ⁇ , ⁇ 10+m, 2, 12+m, 4, 14+m, 15+m, 7, 17+m, 9 ⁇ , Or ⁇ 10+m, 2, 12+m, 4, 5, 15+m, 7, 17+m, 9 ⁇ , ⁇ 1, 11+m, 3, 13+m, 14+m, 6, 16+ m, 8,
  • the sequence number of the first VRU is the subcarrier k
  • the sequence number of the subcarrier after the first PRU determined based on the mapping relationship is k', which satisfies the following formula:
  • M t represents the number of the first VRU participating in the mapping in every 20MHz
  • M t is an integer, 1 ⁇ M t ⁇ 9
  • M t * x represents the total number of the first VRU participating in the mapping
  • mod() represents the remainder operation
  • x may represent the number of 20 MHz included in the maximum bandwidth indicated by the foregoing resource unit allocation information.
  • a communication device may be used to execute the method in the foregoing first aspect or any possible implementation manner of the first aspect.
  • the communication device may include a module or unit for executing the method in the first aspect or any possible implementation manner of the first aspect, for example, including a processing unit and a transceiver unit.
  • the communication device is the aforementioned communication device at the receiving end.
  • the transceiver unit is configured to receive resource indication information, and the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and site information of sites assigned one or more first VRUs , the first VRU includes a plurality of continuous subcarriers in the frequency domain; the processing unit is configured to determine the first physical resource unit PRU according to the resource indication information, wherein there is a mapping relationship between the first PRU and the first VRU, and the first The PRU includes a plurality of discrete subcarrier groups in the frequency domain, and a subcarrier group includes one subcarrier, or includes at least two continuous subcarriers; the transceiver unit is also used to transmit data on the first PRU.
  • the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and site information of sites assigned one or more first VRUs , the first VRU includes a plurality of continuous subcarriers in the frequency domain; the processing unit is configured to determine the first physical resource unit PRU according to
  • the mapping relationship includes: the difference between the index of a first VRU among the one or more first VRUs and the index of the corresponding first PRU is a first set value; or, one or more first VRUs An index of a first VRU in a VRU is the same as an index of a corresponding first PRU; wherein, the index of a first VRU in one or more first VRUs is determined according to resource unit allocation information.
  • the mapping relationship specifically includes: the maximum resource bandwidth allocated by the second communication device may be greater than or equal to 40 MHz, the maximum resource bandwidth may include at least two 242-tone-RUs, and at least two 242-tone-RUs include Each 26-tone-RU in the 18 26-tone-RUs is the smallest unit mapping, and the indexes of the 18 26-tone-RUs are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ , ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m, the indexes obtained after 18 26-tone-RU mappings are ⁇ 1, 11+m, 3, 13+ m, 5, 6, 16+m, 8, 18+m ⁇ , ⁇ 10+m, 2, 12+m, 4, 14+m, 15+m, 7, 17+m, 9 ⁇ , or ⁇ 10 +m, 2, 12+m, 4, 5, 15+m, 7, 17+m, 9 ⁇ , ⁇ 1, 11+m, 3, 13+m, 14+m, 6, 16+m, 8 , 18+m ⁇ , m is an integer, m is an integer
  • the subcarrier whose sequence number is k in the first VRU, and the sequence number of the subcarrier after the first PRU determined based on the mapping relationship is k', which satisfies the following formula:
  • M t represents the number of the first VRU participating in the mapping in every 20MHz
  • M t is an integer, 1 ⁇ M t ⁇ 9
  • M t * x represents the total number of the first VRU participating in the mapping
  • mod() represents the remainder operation
  • x may represent the number of 20 MHz included in the maximum bandwidth indicated by the foregoing resource unit allocation information.
  • a communication device may be used to execute the method in the foregoing second aspect or any possible implementation manner of the second aspect.
  • the communication device may include a module or unit for performing the second aspect or the method in any possible implementation manner of the second aspect, for example, including a processing unit and a transceiver unit.
  • the communication device is the aforementioned communication device at the sending end.
  • the processing unit is configured to generate resource indication information
  • the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and site information of sites to which one or more first VRUs are allocated , the first VRU includes a plurality of continuous subcarriers in the frequency domain; the transceiver unit is configured to send resource indication information; the transceiver unit is also configured to receive data on the first PRU.
  • the mapping relationship includes: the difference between the index of a first VRU among the one or more first VRUs and the index of the corresponding first PRU is a first set value; or, one or more first VRUs An index of a first VRU in a VRU is the same as an index of a corresponding first PRU; wherein, the index of a first VRU in one or more first VRUs is determined according to resource unit allocation information.
  • the mapping relationship specifically includes: the maximum resource bandwidth allocated by the second communication device may be greater than or equal to 40 MHz, the maximum resource bandwidth may include at least two 242-tone-RUs, and at least two 242-tone-RUs include Each 26-tone-RU in the 18 26-tone-RUs is the smallest unit mapping, and the indexes of the 18 26-tone-RUs are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ , ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m, the indexes obtained after 18 26-tone-RU mappings are ⁇ 1, 11+m, 3, 13+ m, 5, 6, 16+m, 8, 18+m ⁇ , ⁇ 10+m, 2, 12+m, 4, 14+m, 15+m, 7, 17+m, 9 ⁇ , or ⁇ 10 +m, 2, 12+m, 4, 5, 15+m, 7, 17+m, 9 ⁇ , ⁇ 1, 11+m, 3, 13+m, 14+m, 6, 16+m, 8 , 18+m ⁇ , m is an integer, m is an integer
  • the subcarrier whose sequence number is k in the first VRU, and the sequence number of the subcarrier after the first PRU determined based on the mapping relationship is k', which satisfies the following formula:
  • mod() indicates the remainder operation
  • the embodiment of the present application provides a communication device, which may be the communication device in any one of the third to fourth aspects in the above embodiments, or be set in the third to fourth aspects A chip in the communication device of any aspect.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions or data
  • the processor is coupled with the memory and the communication interface, and when the processor reads the computer programs or instructions or data, the communication device is made to execute the above first aspect to the second aspect
  • the method is executed by the communication device at the sending end or the communication device at the receiving end.
  • the communication interface can be realized by the antenna, feeder, codec, etc. in the communication device, or if the communication device is a chip set in the communication device at the sending end or the communication device at the receiving end, the communication interface can be The input/output interface of the chip, such as input/output pins, etc.
  • the communication device may also include a transceiver for the communication device to communicate with other devices. Exemplarily, when the communication device is the communication device of the sending end, the other device is the communication device of the receiving end; or, when the communication device is the communication device of the receiving end, the other device is the communication device of the sending end.
  • an embodiment of the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor and may further include a memory, configured to implement the method performed by the communication device in any one of the third aspect to the fourth aspect.
  • the chip system further includes a memory, configured to store program instructions and/or data.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • an embodiment of the present application provides a communication system, where the communication system includes the communication devices described in the third aspect and the fourth aspect.
  • the present application provides a computer-readable storage medium, the computer-readable storage medium stores computer programs or instructions, and when the computer programs or instructions are executed, the above-mentioned aspects are implemented by the communication device at the receiving end or implement the method performed by the communication device at the sending end in the above aspects.
  • a computer program product including: computer program code or instruction, when the computer program code or instruction is executed, the method in the above aspects performed by the communication device at the receiving end be executed, or cause the method executed by the communication device at the sending end in the above aspects to be executed.
  • FIG. 1 is a network architecture of a wireless local area network applicable to an embodiment of the present application
  • FIG. 2 is a schematic diagram of subcarrier distribution and RU distribution of 20MHz
  • FIG. 3 is a schematic diagram of subcarrier distribution and RU distribution of 40MHz
  • FIG. 4 is a schematic diagram of subcarrier distribution and RU distribution of 80MHz
  • FIG. 5 is a schematic diagram of the distribution of subcarrier discrete 26-tone-RU
  • FIG. 6 is a schematic diagram of the distribution of subcarrier discrete 52-tone-RU
  • FIG. 7 is an exemplary flowchart of a resource indication method provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the replacement of the VRU provided by the embodiment of the present application.
  • FIG. 9A is one of the schematic diagrams of the replacement method 1 provided in the embodiment of the present application.
  • FIG. 9B is one of the schematic diagrams of the replacement method 1 provided in the embodiment of the present application.
  • Fig. 10A is one of the schematic diagrams of the replacement method 1 provided in the embodiment of the present application.
  • FIG. 10B is one of the schematic diagrams of the replacement method 1 provided in the embodiment of the present application.
  • Figure 11A is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • Figure 11B is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • Figure 11C is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • Figure 11D is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • Figure 11E is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • Figure 11F is one of the schematic diagrams of the second replacement method provided by the embodiment of the present application.
  • FIG. 12A is one of the subcarrier mapping schematic diagrams provided by the embodiment of the present application.
  • FIG. 12B is one of the subcarrier mapping schematic diagrams provided by the embodiment of the present application.
  • FIG. 13 is a schematic diagram of distributed subcarriers of 242-tone-RU provided by the embodiment of the present application.
  • FIG. 14 is a schematic diagram of distributed subcarriers of 484-tone-RU provided by the embodiment of the present application.
  • FIG. 15 is a schematic diagram of distributed subcarriers of 996-tone-RU provided by the embodiment of the present application.
  • FIG. 16 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 17 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the embodiment of the present application may be applicable to a wireless local area network (wireless local area network, WLAN) scenario, and may be applicable to IEEE 802.11 system standards, such as 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or the next generation thereof, Such as 802.11be or the standard of the next generation.
  • IEEE 802.11 system standards such as 802.11a/b/g, 802.11n, 802.11ac, 802.11ax, or the next generation thereof, Such as 802.11be or the standard of the next generation.
  • the embodiments of the present application may also be applicable to wireless local area network systems such as an Internet of Things (Internet of Things, IoT) network or a Vehicle to X (Vehicle to X, V2X) network.
  • IoT Internet of Things
  • V2X Vehicle to X
  • LTE system LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile communication system (universal mobile telecommunications system, UMTS), worldwide interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, 5G communication system, and future 6G communication system, etc.
  • LTE frequency division duplex frequency division duplex, FDD
  • LTE time division duplex time division duplex
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX worldwide interconnection microwave access
  • WLAN started with the 802.11a/g standard, went through 802.11n, 802.11ac, 802.11ax and now the 802.11be being discussed.
  • 802.11n can also be called high throughput (high throughput, HT);
  • 802.11ac can also be called very high throughput (very high throughput, VHT);
  • 802.11ax can also be called high efficient (high efficient, HE) or Wi -Fi 6;
  • 802.11be can also be called extremely high throughput (EHT) or (Wi-Fi 7), and for the standards before HT, such as 802.11a/b/g, etc. are collectively called non-high throughput (Non-HT).
  • Non-HT non-high throughput
  • FIG. 1 it shows a network architecture diagram of a WLAN to which this embodiment of the present application is applicable.
  • Figure 1 takes the WLAN including one wireless access point (access point, AP) and two stations (station, STA) as an example.
  • the STA associated with the AP can receive the wireless frame sent by the AP, and can also send the wireless frame to the AP.
  • the embodiment of the present application is also applicable to the communication between APs, for example, each AP can communicate with each other through a distributed system (DS), and the embodiment of the present application is also applicable to the communication between STAs .
  • DS distributed system
  • the number of APs and STAs in FIG. 1 is just an example, and may be more or less.
  • the access point can be the access point for the terminal equipment (such as mobile phone) to enter the wired (or wireless) network. It is mainly deployed in the home, inside the building, and inside the park. Can be deployed outdoors.
  • the access point is equivalent to a bridge connecting the wired network and the wireless network. Its main function is to connect various wireless network clients together, and then connect the wireless network to the Ethernet.
  • the access point may be a terminal device (such as a mobile phone) or a network device (such as a router) with a Wi-Fi chip.
  • the access point may be a device supporting the 802.11be standard.
  • the access point may also be a device supporting various wireless local area networks (WLAN) standards of the 802.11 family such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, and 802.11be next generation.
  • WLAN wireless local area networks
  • the access point in this application may be a high efficient (HE) AP or an extremely high throughput (EHT) AP, or an access point applicable to a certain future generation of Wi-Fi standards.
  • HE high efficient
  • EHT extremely high throughput
  • a station may be a wireless communication chip, a wireless sensor, or a wireless communication terminal, etc., and may also be called a user.
  • the site can be a mobile phone supporting the Wi-Fi communication function, a tablet computer supporting the Wi-Fi communication function, a set-top box supporting the Wi-Fi communication function, a smart TV supporting the Wi-Fi communication function, an Smart wearable devices, in-vehicle communication devices supporting Wi-Fi communication functions, computers supporting Wi-Fi communication functions, etc.
  • the station may support the 802.11be standard.
  • the station can also support multiple wireless local area networks (WLAN) standards of the 802.11 family such as 802.11ax, 802.11ac, 802.11n, 802.11g, 802.11b, 802.11a, and 802.11be next generation.
  • WLAN wireless local area networks
  • the stations in this application may be high efficient (HE) STAs or extremely high throughput (extremely high throughput, EHT) STAs, and may also be STAs applicable to a future generation of Wi-Fi standards.
  • HE high efficient
  • EHT extremely high throughput
  • access points and stations can be devices applied in the Internet of Vehicles, IoT nodes and sensors in the Internet of Things (IoT, internet of things), smart cameras in smart homes, smart remote controls, smart water meters and electricity meters, And sensors in smart cities, etc.
  • IoT Internet of Things
  • smart cameras in smart homes smart remote controls
  • smart water meters and electricity meters smart cities, etc.
  • the APs and STAs involved in this embodiment of the present application may be APs and STAs applicable to the IEEE 802.11 system standard.
  • An AP is a device deployed in a wireless communication network to provide wireless communication functions for its associated STAs.
  • the AP can be used as the center of the communication system. It is usually a network-side product that supports the MAC and PHY of the 802.11 system standard. For example, it can be a base station , a router, a gateway, a repeater, a communication server, a switch or a network bridge and other communication equipment, wherein the base station may include various forms of macro base stations, micro base stations, relay stations, and the like.
  • the devices mentioned above are collectively referred to as APs.
  • the STA is usually a terminal product that supports media access control (media access control, MAC) and physical layer (physical, PHY) of the 802.11 system standard, such as a mobile phone, a notebook computer, and the like.
  • the AP communicates with the STA, the AP can allocate resources for the STA, and the STA transmits and receives data on the allocated resources.
  • OFDMA orthogonal frequency division multiple access
  • MU-MIMO multi-users multiple-input multiple-output
  • VRU virtual resource units
  • the WLAN protocol divides the spectrum bandwidth into several RUs.
  • the bandwidth configuration supported by the 802.11ax protocol includes 20MHz, 40MHz, 80MHz, 160MHz and 80+80MHz.
  • the bandwidth configuration supported by the 802.11be protocol can support 320MHz in addition to the bandwidth configuration supported by the 802.11ax protocol.
  • the difference between 160MHz and 80+80MHz is that the former is a continuous frequency band, while the two 80MHz of the latter can be separated, that is, the 160MHz composed of 80+80MHz is discontinuous.
  • the IEEE 802.11ax protocol stipulates that for 20MHz, 40MHz, 80MHz, and 160MHz, the spectrum bandwidth can be divided into multiple types of RUs, including 26 subcarrier RUs, 52 subcarrier RUs, 106 subcarrier RUs, and 242 subcarrier RUs (the maximum RU), 484 subcarrier RU (maximum RU in 40MHz bandwidth), 996 subcarrier RU (maximum RU in 80MHz bandwidth), and 2*996 subcarrier RU (maximum RU in 160MHz bandwidth).
  • Each RU is composed of consecutive sub-carriers, for example, a 26-sub-carrier RU is composed of 26 consecutive sub-carriers RU.
  • RUs with 26 subcarriers are denoted as 26-tone-RU
  • RUs with 52 subcarriers are denoted as 52-tone-RU, etc., and so on.
  • the entire bandwidth also includes other subcarriers, such as guard (Guard) subcarriers, empty subcarriers, and direct current (DC) subcarriers, pilots One or more of the subcarriers.
  • Guard Guard
  • DC direct current
  • FIG. 2 it is a schematic diagram of subcarrier distribution and RU distribution of 20 MHz.
  • the bandwidth when the bandwidth is 20MHz, the entire bandwidth can be composed of a whole 242-tone-RU, or various combinations of 26-tone-RU, 52-tone-RU, and 106-tone-RU
  • 20MHz can be composed of 8 26-tone-RUs, 4 52-tone-RUs or 2 106-tone-RUs.
  • the bandwidth of a 242-tone-RU is about 20MHz
  • the bandwidth of a 106-tone-RU is about 8MHz
  • the bandwidth of a 52-tone-RU is about 4MHz
  • the bandwidth of tone-RU is about 2MHz.
  • the entire bandwidth also includes one or more of some guard subcarriers, empty subcarriers, DC subcarriers, and pilot subcarriers.
  • the 20MHz shown in Figure 2 also includes guard subcarriers, empty subcarriers, and DC subcarriers. subcarrier.
  • the bandwidth when the bandwidth is 40MHz, the entire bandwidth is roughly equivalent to the replication of two 20MHz subcarrier distributions.
  • the entire bandwidth can be composed of a whole 484-tone-RU, or it can be composed of 26-tone-RU, 52-tone -RU, 106-tone-RU, 242-tone-RU in various combinations, as shown in Figure 3.
  • "5DC" in Figure 3 represents 5 DC subcarriers.
  • 40MHz also includes one or more of some guard subcarriers, empty subcarriers and DC subcarriers. It should be understood that the bandwidth of 484-tone-RU is about 40MHz.
  • the entire bandwidth consists of four 242-tone-RU resource units.
  • the entire bandwidth can be composed of the entire 996-tone-RU, or various combinations of 26-tone-RU, 52-tone-RU, 106-tone-RU, 242-tone-RU, 484-tone-RU, As shown in Figure 4.
  • 484L and 484R in FIG. 4 represent the left half and right half of 484-tone-RU, respectively containing 242 subcarriers, which is another illustration of "484+5DC" in FIG. 3 .
  • "5DC” in FIG. 4 indicates 5 DC subcarriers
  • "23DC" indicates 23 DC subcarriers.
  • 80MHz also includes one or more of some guard subcarriers, empty subcarriers and DC subcarriers. It should be understood that the bandwidth of 996-tone-RU is about 80 MHz.
  • the bandwidth when the bandwidth is 160MHz, the entire bandwidth can be regarded as a copy of the distribution of two 80MHz subcarriers, and the entire bandwidth can be composed of a whole 2*996-tone-RU, or 26-tone-RU, 52 -tone-RU, 106-tone-RU, 242-tone-RU, 484-tone-RU, 996-tone-RU in various combinations.
  • the bandwidth when the bandwidth is 320MHz, the entire bandwidth can be regarded as a copy of the distribution of four 80MHz subcarriers, and the entire bandwidth can be composed of four 996-tone-RU resource units.
  • the subcarrier distribution and RU distribution of 160MHz and 320MHz are not shown separately.
  • 242-tone-RU the RU on the left of Figure 2- Figure 4 corresponds to the lowest frequency
  • the RU on the right of Figure 2- Figure 4 corresponds to the highest frequency.
  • 242-tone-RU can be labeled: 1st, 2nd, ..., 16th. It should be noted that at most 16 242-tone-RUs correspond to 16 20MHz channels according to frequency from low to high.
  • the 802.11be protocol also introduces a 52-tone-RU and a 26-tone-RU composed of 52+26-tone-RU; a 106-tone-RU and a 26-tone-RU 106+26-tone-RU composed of RU; 484+242-tone-RU composed of a 484-tone-RU and a 242-tone-RU; 996 composed of a 996-tone-RU and a 484-tone-RU +484-tone-RU; 242+484+996-tone-RU composed of one 242-tone-RU, one 484-tone-RU and one 996-tone-RU; two 996-tone-RUs and one 484- 2*996+484-tone-RU composed of tone-RU; 3*996-tone-RU composed of three 996-tone-RUs; 3* composed of three 996-tone-RUs and one 484-tone-RU 996+484-tone-RU and so on.
  • These combined RUs may
  • 26-tone-RU corresponds to about 2MHz
  • 52-tone-RU corresponds to about 4MHz
  • 106-tone-RU corresponds to about 8MHz
  • 242-tone-RU corresponds to about 20MHz, no more details.
  • the continuous RU in this application includes RU and MRU defined by the standard.
  • the RU defined by the standard may be RU composed of multiple consecutive subcarriers
  • the MRU defined by the standard may be RU composed of two consecutive subcarrier groups
  • the multiple subcarriers included in each group of continuous subcarrier groups are consecutive
  • the interval between two subcarrier groups is only one or more of guard subcarriers, empty subcarriers, or DC subcarriers.
  • All RUs supported in 802.11ax can be understood as continuous RUs.
  • Consecutive RUs may also be referred to as regular RUs.
  • the continuous RU may also have other names, and this embodiment of the present application does not limit the specific name of the continuous RU.
  • consecutive RUs including K subcarriers are referred to as consecutive K-tone-RUs.
  • consecutive 26-tone-RUs refer to consecutive RUs including 26 subcarriers. That is, the concept of continuous K-tone-RU is the same as the concept of K-tone-RU in the existing 802.11ax standard.
  • Discrete RU distributed RU, DRU
  • RUs including multiple discrete subcarrier groups in the frequency domain may be referred to as discrete RUs, that is, a discrete RU includes multiple subcarrier groups, and any two subcarrier groups are discrete in the frequency domain.
  • one subcarrier group includes one subcarrier, or, one subcarrier group includes at least two consecutive subcarriers, that is, one subcarrier group includes one subcarrier or includes multiple consecutive subcarriers.
  • Discrete RU can also be called distributed RU (distributed RU, DRU).
  • the name of the discrete RU may also be another name, and this application does not limit the name of the discrete RU.
  • the number of subcarrier groups included in a discrete RU is greater than or equal to 2.
  • a discrete RU including K subcarriers may be referred to as a discrete K-tone-RU.
  • a discrete 26-tone-RU refers to a discrete RU including 26 subcarriers.
  • the size of K may refer to the value of K adopted by continuous RUs.
  • 20MHz may include one or more of discrete 26-tone-RU, discrete 52-tone-RU, discrete 106-tone-RU, and discrete 242-tone-RU.
  • a discrete RU can form a discrete MRU with another discrete RU, and the discrete MRU can be allocated to one or more sites.
  • discrete 242-tone-RU and discrete 484-tone-RU can form discrete 484+242-tone-RU.
  • the number of subcarriers included in any two subcarrier groups included in the multiple subcarrier groups included in the discrete RU may be the same or different.
  • the number of subcarriers in each subcarrier group may be 1.
  • the number of subcarriers in some subcarrier groups is 1, and the number of subcarriers in another part of subcarrier groups is 2, that is, a discrete RU can include 4 subcarrier groups, and the number of subcarriers in the 4 subcarrier groups can be sequentially 1, 1, 2, 2.
  • the interval between two adjacent subcarrier groups is The number of subcarriers may or may not be the same.
  • Two adjacent subcarrier groups refer to two adjacent subcarrier groups of a discrete RU.
  • the power transmitted by the device is limited by both the maximum power and the maximum power spectral density, that is, the power transmitted by the device cannot exceed the maximum power value, nor can it exceed the maximum power spectral density, that is, the transmitted power per MHz cannot exceed a given value.
  • Table 1 shows the correspondence between the maximum power sent by the device and the bandwidth in the LPI scenario.
  • the bandwidth corresponding to each subcarrier included in continuous RUs is smaller, so it is naturally impossible to increase the maximum transmission power of the device through the transmission bandwidth.
  • the AP allocates a discrete 26-tone-RU to the STA, and the discrete 26-tone-RU also includes 26 subcarriers, but these 26 subcarriers can be scattered on multiple 26-tone-RUs.
  • the subcarriers allocated to the device are not increased, the subcarriers allocated to the device become more discrete in the frequency domain, so that the number of subcarriers per MHz becomes smaller, from the number of subcarriers From a perspective, it is equivalent to widening the bandwidth corresponding to each subcarrier, so the device can support greater transmission power.
  • FIG. 5 shows a schematic distribution diagram of a 26-tone-RU with discrete subcarriers.
  • Figure 5 takes 80MHz as an example, where 26-tone-RU includes 24 data subcarriers and 2 pilot subcarriers.
  • the 24 data subcarriers may include 12 data subcarriers in the first continuous 26-tone-RU, and 12 subcarriers in the sixth continuous 26-tone-RU.
  • FIG. 6 shows a schematic distribution diagram of a 52-tone-RU with discrete subcarriers.
  • Figure 6 takes 80MHz as an example, where 52-tone-RU includes 48 data subcarriers and 4 pilot subcarriers.
  • the 48 data subcarriers can include 12 subcarriers in the first consecutive 52-tone-RU, 12 subcarriers in the third consecutive 52-tone-RU, and 12 subcarriers in the fifth consecutive 26-tone - 12 subcarriers in RU and 12 subcarriers in the 7th consecutive 26-tone-RU.
  • discrete distribution (discrete design) manner of the data subcarriers in FIG. 5 and FIG. 6 is only an illustration, and the embodiment of the present application does not limit the discrete distribution of the data subcarriers.
  • the present application provides a resource indication method, which essentially provides a mapping relationship between VRUs and PRUs, and the mapping relationship can map continuous VRUs to discrete PRUs.
  • the sending end can inform the receiving end that the RUs allocated to the receiving end are continuous VRUs, but the sending end sends data on the discrete PRUs mapped to the continuous VRUs. Since continuous VRUs are mapped to discrete PRUs, it is equivalent to reducing the number of subcarriers per MHz, so the sending end can support greater sending power.
  • the discrete subcarriers may include subcarriers used to carry data (also referred to as data subcarriers herein) and subcarriers used to carry pilots (referred to herein as subcarriers Also referred to as pilot subcarriers), may also only include subcarriers used to carry data, which is not limited in this application.
  • the sending end is the first communication device and the receiving end is the second communication device as an example to describe how the first communication device indicates the allocated resources to the second communication device.
  • the first communication device may be an AP
  • the second communication device may be a STA or an AP
  • the first communication device may be a STA
  • the second communication device may also be a STA or an AP.
  • the first communication device is an AP and the second communication device is an STA.
  • FIG. 7 it is an exemplary flow chart of the resource indication method provided by the embodiment of the present application, and the flow is described as follows.
  • the AP sends resource indication information to the STA, and the STA receives the resource indication information from the AP accordingly.
  • the resource indication information may include resource unit allocation information for indicating one or more first VRUs and site information of sites allocated to one or more first VRUs.
  • the above-mentioned first VRU may include a plurality of continuous subcarriers in the frequency domain, that is to say, the first VRU may be a continuous RU, and the definition of the continuous RU may refer to the above, which will not be repeated here.
  • the AP may allocate a VRU to one STA, and may also allocate VRUs to multiple STAs at the same time, for example, the AP allocates a first VRU to STA1 and a second VRU to STA2.
  • the STA determines the first PRU according to the resource indication information, where there is a mapping relationship between the first VRU and the first PRU.
  • STA may map the first VRU to the first PRU according to the mapping relationship between the first VRU and the first PRU, so as to send data on the first PRU.
  • the STA transmits data on the first PRU, and correspondingly, the AP receives the data on the first PRU.
  • the VRU-to-PRU mapping scheme provided in the embodiment of this application is applicable to uplink transmission (that is, transmission from STA to AP), that is, STA can transmit data to AP on the first PRU, and can also be applied to downlink transmission (that is, transmission from AP to AP). STA transmission), that is, the AP can also transmit data to the STA on the first PRU.
  • the resource allocated by the AP to the STA is continuous RU (namely the first VRU).
  • this application can map the continuous RU to a discrete RU (namely the first PRU).
  • Sending data to the AP on the RU can enable the STA to obtain greater transmission power.
  • the STA sends data to the AP on the discrete RU, and the AP receives the data from the STA on the discrete RU, and may also send data to the STA on the discrete RU. That is, the STA does not send and receive data on the continuous RU allocated by the AP.
  • the continuous RU allocated by the AP to the STA is a VRU
  • the discrete RU is a PRU.
  • the VRU is mapped to the PRU, so that the discrete RU subcarriers are distributed over a larger bandwidth, so that the transmitter can transmit with a larger transmit power.
  • the sender can adopt the existing resource unit allocation method, that is, the resource unit allocation method of allocating continuous RUs, without redefining multiple distributed RUs, and without caring about how to select and allocate distributed RUs, it is possible to increase the size of the device
  • the purpose of the maximum transmission power and can be compatible with the existing WiFi protocol and reduce the complexity of resource allocation.
  • the multiple discrete subcarriers may occupy adjacent frequency bands, so the average value of these multiple subcarrier channel estimates can be used, As the value of channel estimation, it can make the estimation result more accurate.
  • This method of estimating the channel is called channel smoothing.
  • the AP can continue to use the current continuous RU allocation method, that is, use the resource unit allocation subfield (RU Allocation subfield) to allocate resources.
  • the AP allocates resources to the STA through the resource unit allocation subfield, and the STA considers the allocated resources to be physical resources.
  • the AP sends resource allocation information to the STA, and the resource allocation information is carried in the resource unit allocation subfield to indicate the RU allocated by the AP to the STA.
  • the resources allocated to STAs through the resource unit allocation subfield are not the resources actually used by the AP to send data, so the AP allocates resources to STAs and informs STAs that the resources allocated by AP to STAs are VRUs.
  • the AP may send resource allocation information to the STA, where the resource allocation information is used to indicate that the RU allocated by the AP to the STA is the first VRU.
  • the resource allocation information may be carried in the resource allocation subfield, or the resource allocation information may also be carried in the signaling field (signal field, SIG) included in the physical layer protocol data unit (physical protocol data unit, PPDU), for example In the universal field (universal SIG, U-SIG) or ultra-high throughput signaling field (extremely high throughput signal field, EHT-SIG).
  • signal field signal field
  • U-SIG universal SIG, U-SIG
  • EHT-SIG ultra-high throughput signaling field
  • the purpose of mapping VRUs to PRUs is to make subcarriers more discrete, and the positions of VRUs and PRUs on the frequency band can be determined by subcarrier numbers or RU numbers.
  • the embodiment of the present application can map the first VRU or the subcarriers contained in the first VRU, that is, map the sequence number of the first VRU to the sequence number of the first PRU, or map the subcarrier sequence numbers of the subcarriers contained in the first VRU is the subcarrier sequence number of the subcarrier included in the first PRU.
  • Table 2 Data and pilot subcarrier index table for each RU of the 20MHz EHT PPDU
  • Table 3 Data and pilot subcarrier index table of each RU of 40MHz EHT PPDU
  • Table 4 Data and pilot subcarrier index table of each RU of 80MHz EHT PPDU
  • Table 5 Data and pilot subcarrier index table of each RU of 160MHz EHT PPDU
  • Table 6 Data and pilot subcarrier index table of each RU of 320MHz EHT PPDU
  • the division of consecutive RUs and the subcarrier numbers or subcarrier indexes corresponding to the corresponding RUs have been specified.
  • the STA can know which RU it is on. Transfer resources to the AP.
  • the serial number of each subcarrier can follow the subcarrier number of the subcarrier in the corresponding actual frequency band (such as the subcarrier number specified in the above table), or can be customized.
  • the embodiment of the present application does not limit the specific implementation form of the sequence numbers of the subcarriers.
  • the sequence number of the subcarrier may be the subcarrier number of the subcarrier in the corresponding actual frequency band.
  • the serial numbers of the 242 subcarriers corresponding to the first 20MHz of 80MHz are -500 to -259 in sequence; the serial numbers of the 242 subcarriers corresponding to the second 20MHz are -253 to -12; the serial numbers of the 242 subcarriers corresponding to the third 20MHz 12 to 253, and the serial numbers of the 242 subcarriers corresponding to the fourth 20MHz are 259 to 500 in turn.
  • the serial numbers of the subcarriers may also be renumbered instead of the existing subcarrier numbers (subcarrier numbers in the actual frequency band), for example, numbering starts from 0 or 1.
  • the serial numbers of the 242 subcarriers corresponding to the first 20 MHz of 80 MHz are 0 to 241, or 1 to 242. That is to say, in the embodiment of the present application, the sequence numbers of the subcarriers participating in the mapping may be consecutively numbered in the order from low to high in the frequency band. For example, if all 26 subcarriers of the first 26-tone-RU of 20MHz participate in the mapping, the numbers can be 0 to 25. It should be noted that the sequence numbers of the subcarriers participating in the mapping may not be consecutively numbered in the order from low to high in the frequency band, which is not limited in this application.
  • 996-tone-RU, 484-tone-RU, 242-tone-RU, 106-tone-RU and 52-tone-RU can be regarded as composed of multiple It consists of 26-tone-RU.
  • 52-tone-RU can be regarded as composed of two 26-tone-RUs
  • 106-tone-RU can be regarded as composed of 4 26-tone-RUs, which will not be repeated below.
  • 106-tone-RU, 242-tone-RU and 996-tone-RU also include subcarriers other than the subcarriers in 26-tone-RU, for details, please refer to the aforementioned Table 2-Table 6.
  • 242-tone-RU can be regarded as composed of 9 26-tone-RUs
  • the equivalent resource allocation bandwidth is 20MHz
  • 484-tone-RU can be regarded as composed of 18 26-tone-RUs
  • the equivalent resource allocation bandwidth is 40MHz
  • 996-tone-RU can be regarded as composed of 36 26-tone-RUs
  • the equivalent resource allocation bandwidth is 80MHz.
  • 2*996-tone-RU and 3*996-tone-RU can be regarded as composed of multiple 996-tone-RUs
  • the equivalent resource allocation bandwidths are 160MHz and 320M respectively.
  • 2*996-tone-RU can be regarded as composed of two 996-tone-RUs, that is, composed of 2*36 26-tone-RUs
  • 3*996-tone-RU can be regarded as It is composed of 3 996-tone-RUs, that is, 3*36 26-tone-RUs.
  • the resource allocation bandwidth mentioned here refers to the maximum bandwidth that the sending end can allocate to the receiving end.
  • 242-tone-RU it can be considered that the maximum bandwidth allocated by the AP to one or more STAs is 242-tone-RU RU (20M), each STA transmits data on the RU of the corresponding size and location according to the instructions.
  • the first VRU can be mapped to the first PRU by replacing the VRU.
  • the replacement is performed with K-tone-RU as the minimum unit.
  • the relative position of the K-tone-RU in the VRU can be adjusted by replacement, and the adjacent K-tone-RU on the frequency band can be dispersed to a position farther away from the frequency band, so that the RUs in the replaced PRU can be distributed in a larger bandwidth.
  • the distance between RU1 and RU2 is relatively far in the frequency band.
  • the RU2 contained in the first PRU after replacement is actually located at the position with the index RU4 in the frequency domain, that is, the RUs in the first PRU are distributed in a larger bandwidth.
  • the relative positions of the subcarriers in the K-tone-RU are not changed. That is to say, when 26-tone-RU is used as the minimum unit, the relative positions of the 26 subcarriers in the 26-tone-RU after the permutation are the same as the relative positions of the 26 subcarriers in the 26-tone-RU before the permutation.
  • the above K may be 26 or 52, that is to say, the replacement may be performed with 26-tone-RU as the minimum unit, or the replacement may be performed with 52-tone-RU as the minimum unit.
  • 26-tone-RU as the smallest unit as an example to introduce two different replacement methods.
  • Replacement method 1 perform pairwise replacement within 242-tone-RU.
  • the 242-tone-RU mentioned here can be regarded as including nine 26-tone-RUs in the first row as shown in FIG. 2 , and can also be equivalent to a resource transmission bandwidth of 20M.
  • the middle 26-tone-RUs in the frequency domain of each 242-tone-RU that is, the 26-tone-RUs separated by 7DCs
  • -tone-RU for the remaining 8 26-tone-RUs in 242-tone-RU, every other 26-tone-RU is replaced with the 26-tone-RU at the symmetrical position.
  • FIG. 9A it is a schematic diagram of the first replacement method in the embodiment of the present application.
  • 242-tone-RU contains 9 26-tone-RUs, and the indexes of the above 9 26-tone-RUs are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ +q .
  • the RU with the index 5 located in the middle in the frequency domain may be ignored, the RU with the index 2 and the RU with the index 7 at the symmetrical position may be replaced, and the RU with the index 4 and the RU with the index 9 may be replaced. That is, the indices of the RUs contained in the PRU obtained after the permutation are respectively ⁇ 1, 7, 3, 9, 5, 6, 2, 8, 4 ⁇ +q.
  • q is an integer
  • q 9*b
  • b is an integer
  • the first VRU allocated by the AP can be one or more of the nine 26-tone-RUs before the replacement.
  • the first VRU allocated by the AP is 52-tone-RU, then the AP can be allocated A first VRU is regarded as composed of two 26-tone-RUs.
  • the first PRU corresponding to the first VRU may be one or more of the 9 replaced 26-tone-RUs corresponding to the first VRU.
  • STA1 can obtain the first VRU after replacement according to the mapping relationship between VRU and PRU One PRU.
  • the RUs included in the first PRU are RUs with index 1 and index 7 respectively in the frequency domain.
  • the pilot subcarriers included in the RU may or may not participate in the permutation. Assuming that the pilot subcarriers do not participate in the permutation, the frequency domain occupied by the pilot subcarriers remains unchanged before and after the permutation. Assuming that each 26-tone-RU contains two pilot subcarriers, the first VRU allocated by the AP to STA1 includes 26-tone-RUs 1 and 2 before replacement as shown in FIG. 9A . Then, the RUs actually included in the obtained PRU are RUs with index 1 and index 7 respectively in the frequency domain.
  • pilot subcarriers do not participate in the permutation, the pilot subcarriers contained in the RU with the index of 2 do not change in the frequency domain after the permutation, and are still located in the frequency domain of the RU with the index of 2 before the permutation, while the rest
  • the frequency domain of the 24 subcarriers after the permutation is actually the frequency domain of the RU whose index is 7 before the permutation.
  • pilot subcarriers on each PRU may also be reassigned, which is not specifically limited in this application.
  • bandwidths of 40MHz, 80MHz, 160MHz, and 320MHz may be regarded as being composed of multiple 242-tone-RUs, and two-two permutation is performed inside each 242-tone-RU.
  • bandwidth may be regarded as being composed of multiple 242-tone-RUs, and two-two permutation is performed inside each 242-tone-RU.
  • 40 MHz it can be divided into two 242-tone-RUs, and the permutation shown in FIG. 9A is performed for each 242-tone-RU.
  • the STA can map the first VRU allocated by the AP to the first PRU according to the replacement method shown in Figure 9A, that is, the first PRU includes RU1 and RU7 in the 26-tone-RU shown in Table 2, Subcarrier indices include [–121:–96] and [43:68].
  • the mapping relationship between the VRU and the PRU at a bandwidth of 20MHz can be obtained through Table 2 and Table 7 relationship indication.
  • the STA may determine the RU and subcarrier index included in the first PRU according to the first VRU indicated by the AP and look up the table 7 .
  • the STA can look up Table 7 to determine that the first PRU subcarrier index includes [–121:–96] and [43 :68], and send data on these PRU subcarriers.
  • the first VRU indicated by the AP includes RU3 and RU4 in the 20MHz 26-tone-RU, then the STA can look up Table 7 to determine that the first PRU subcarrier index includes [–68:–43] and [96:121 ], and transmit data on these PRU subcarriers.
  • Table 7 Data and pilot subcarrier index mapping table for each RU of the 20MHz EHT PPDU
  • the index of 106-tone-RU and 242-tone-RU in the above table 7 (the 242-tone-RU here means that the RU size allocated by the AP received by the STA is 242-tone-RU) is -122
  • the subcarriers whose index is 122 do not participate in the permutation, so the frequency domain positions of the above two subcarriers do not change before and after the permutation.
  • the index table of the data and pilot subcarrier indexes of each RU from 40MHz to 320MHz shown in Table 3-Table 6 after mapping can also be determined according to the above-mentioned replacement method as shown in Figure 9A, for details, see
  • the determination method of the index table after mapping the data and pilot subcarrier index of each RU under the above-mentioned 20MHz bandwidth is the determination method in Table 7. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 40MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU1 and RU2 in the 26-tone-RU as shown in Table 3.
  • the subcarrier indexes included in the first PRU include [–243:–218] and [–83:–58].
  • the indexes of the pilot subcarriers do not change before and after the permutation, which will not be repeated here.
  • Table 8 Mapping table of data and pilot subcarrier index of each RU of 40MHz EHT PPDU
  • subcarriers with indexes -244, 244, 3 and -3 in the above Table 8 do not participate in the permutation, so the frequency domain of the above subcarriers does not change before and after the permutation.
  • Table 9 Data and pilot subcarrier index table of each RU of 80MHz EHT PPDU
  • the subcarriers with indexes -500, -259, -256, -12, 12, 253, 259 and 500 do not participate in the mapping, so the above subcarriers do not change in the frequency domain before and after the replacement .
  • Table 10 Data and pilot subcarrier index table of each RU of 160MHz EHT PPDU
  • indexes in the above table 10 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 600, 524, 765, 771, 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 11 Data and pilot subcarrier index table of each RU of 320MHz EHT PPDU
  • indexes in the above table 11 are -2036, -1795, -1789, -1548, -1524, -1283, -1277, -1036, -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771, 1012, 1036, 1277, 1283, 1524, 1548, 1789, 1795 and 2036 subcarriers do not participate in the permutation, so before and after permutation The frequency domain positions of the above subcarriers have not changed.
  • FIG. 9B it is another schematic diagram of the replacement method 1 in the embodiment of the present application.
  • 242-tone-RU contains 9 26-tone-RU, and the indexes are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ respectively.
  • the RU with the index 5 located in the middle in the frequency domain may be ignored, the RU with the index 1 and the RU with the index 6 at symmetrical positions may be replaced, and the RU with the index 3 and the RU with the index 8 may be replaced. That is, the index of the RU contained in the PRU obtained after the permutation is ⁇ 6, 2, 8, 4, 5, 1, 7, 3, 9 ⁇ .
  • STA1 can obtain discrete first PRUs according to the mapping relationship between VRUs and PRUs.
  • the RUs included in the first PRU are respectively located on the RUs with index 6 and index 2 before replacement in the frequency domain.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • the bandwidth can be regarded as multiple 242-tone-RUs, and two-by-two permutation is performed inside each 242-tone-RU.
  • the bandwidth can be divided into two 242-tone-RUs, and the permutation shown in FIG. 9B is performed for each 242-tone-RU.
  • the STA can assign the first VRU allocated by the AP according to the replacement method shown in Figure 9B.
  • a VRU is mapped to the first PRU, that is, the PRU includes RU6 and RU2 in the 26-tone-RU shown in Table 2, and the subcarrier indexes include [17:42] and [–95:–70].
  • the mapping relationship between VRU and PRU under 20MHz bandwidth can be determined through the relationship in Table 2 and Table 12 instruct. For example, according to the first VRU indicated by the AP, the STA looks up the table 12 to determine the RU and subcarrier index included in the first PRU.
  • the STA can look up Table 12 to determine that the first PRU subcarrier index includes [17:42] and [–95: –70], and send data on the first PRU subcarrier.
  • the first VRU indicated by the AP includes RU3 and RU4 in the 26-tone-RU of 20MH, then the STA can look up Table 12 to determine that the PRU subcarrier index includes [70:95] and [–42:–17], And send data on the first PRU subcarrier.
  • Table 12 Data and pilot subcarrier index mapping table for each RU of the 20MHz EHT PPDU
  • subcarriers with indexes 122 and -122 in the above Table 12 do not participate in the replacement, so the frequency domain of the above subcarriers does not change before and after the replacement.
  • the index table after mapping the data and pilot subcarrier indexes of each RU from 40MHz to 320MHz shown in Table 3-Table 6 can also be determined according to the mapping relationship shown in FIG. 9B.
  • the determination method of the index table after mapping the data and pilot subcarrier index of each RU under the bandwidth is the determination method in Table 12. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 40MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU6 and RU2 in the 26-tone-RU shown in Table 3. RU2, that is, the subcarrier indexes included in the first PRU include [–109:–84] and [–217:–192].
  • Table 13 Data and pilot subcarrier index table of each RU of 40MHz EHT PPDU
  • subcarriers with indexes -244, 244, -3 and 3 in the above Table 13 do not participate in the replacement, so the frequency domain positions of the above subcarriers do not change before and after the replacement.
  • Table 14 Data and pilot subcarrier index table of each RU of 80MHz EHT PPDU
  • subcarriers with indexes -500, -259, -253, -12, 12, 253, 259 and 500 in the above Table 14 do not participate in the permutation, so the frequency domain of the above subcarriers does not change before and after the permutation.
  • Table 15 Data and pilot subcarrier index table of each RU of 160MHz EHT PPDU
  • indexes in the above table 15 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771 and 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 16 Data and pilot subcarrier index table of each RU of 320MHz EHT PPDU
  • indexes in the above table 15 are -2036, -1795, -1789, -1548, -1524, -1283, -1277, -1036, -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771, 1012, 1036, 1277, 1283, 1524, 1548, 1789, 1795 and 2036 subcarriers do not participate in the permutation, so before and after permutation The frequency domain of the above subcarriers has not changed.
  • Figure 9A and Figure 9B can be regarded as the exchange of nine 26-tone-RUs contained in each 242-tone-RU in position, and the exchange mentioned here is also It can be understood that the positions of the subcarriers change, for example, RU1 and RU2 before the replacement correspond to the positions of the RU1 and RU7 before the replacement.
  • Figure 9A can be considered as the RUs at the even-numbered positions except the middle 26-tone-RU are exchanged on the left and right sides of the middle 26-tone-RU.
  • the RUs at the odd-numbered positions outside the middle 26-tone-RU are exchanged on the left and right sides of the middle 26-tone-RU with the middle 26-tone-RU as the boundary.
  • FIG. 9A and FIG. 9B are described by taking 26-tone-RU as the minimum unit of replacement as an example.
  • the replacement can be performed with 52-tone-RU as the minimum unit.
  • FIG. 10A it is another schematic diagram of the replacement mode 1 in the embodiment of the present application.
  • 9 of the 242-tone-RUs contain 26-tone-RUs, and the indexes are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ .
  • the RU whose index is 5 in the middle in the frequency domain may be ignored, and the RUs whose indices are 3 and 4 at symmetrical positions are replaced with the RUs whose indices are 8 and 9 at symmetrical positions. That is, the RU index included in the PRU obtained after the permutation is ⁇ 1, 2, 8, 9, 5, 6, 7, 3, 4 ⁇ .
  • the RUs included in the first PRU are RUs with indexes 1, 2, 8 and 9 respectively in the frequency domain.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • bandwidths of 40MHz, 80MHz, 160MHz and 320MHz may be regarded as multiple 242-tone-RUs, and permutation is performed within each 242-tone-RU.
  • the bandwidth may be divided into two 242-tone-RUs, and the permutation shown in FIG. 10A is performed for each 242-tone-RU.
  • the STA can map the first VRU allocated by the AP to the first PRU according to the replacement method shown in Figure 10A above, that is, the first PRU includes RU1 and RU2 in the 26-tone-RU shown in Table 2 With RU8 and RU9, the subcarrier indices include [–121:–96], [–95:–70], [70:95], and [96:121].
  • the mapping relationship between VRU and PRU under 20MHz bandwidth can be indicated by the relationship in Table 2 and Table 17 .
  • the STA may determine the RU and subcarrier index included in the first PRU according to the first VRU indicated by the AP and look up the table 17 .
  • the STA can look up Table 9 to determine that the first PRU subcarrier index includes [–95:–70] and [70 :95], and send data on the first PRU subcarrier.
  • Table 17 Data and pilot subcarrier index mapping table for each RU of 20MHz EHT PPDU
  • subcarriers with indexes -122 and 122 in the above Table 17 do not participate in the permutation, so the frequency domain of the subcarriers does not change before and after the permutation.
  • the index table after mapping the data and pilot subcarrier indexes of each RU from 40MHz to 320MHz shown in Table 3-Table 6 can also be determined according to the mapping relationship shown in FIG. 10A.
  • the method of determining the data and pilot subcarrier indexes of each RU (the first VRU) in the index table after mapping that is, the method of determining in Table 17, will not be shown separately below.
  • the STA can determine that the RUs included in the first PRU can be RU2 and RU3 in the 26-tone-RU shown in Table 3.
  • RU8 that is, the subcarrier indexes included in the first PRU include [–217:–192] and [–55:–30].
  • FIG. 10B it is another schematic diagram of replacement mode 1 in the embodiment of the present application.
  • 242-tone-RU contains 9 26-tone-RU, and the indexes are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ respectively.
  • the RU with index 5 located in the middle in the frequency domain may not be considered, and the RU with index 1 and 2 and the RU with index 6 and 7 at symmetrical positions are replaced. That is, the index of the RU contained in the PRU obtained after the permutation is ⁇ 6, 7, 3, 4, 5, 1, 2, 8, 9 ⁇ .
  • the first VRU allocated by the AP to STA1 includes 26-tone-RUs 1 to 4 before replacement as shown in FIG. 10A .
  • STA1 can obtain discrete PRUs according to the mapping relationship between VRUs and PRUs.
  • the RUs included in the PRU are RUs with indexes 6, 7, 3 and 4 respectively in the frequency domain.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • bandwidths such as 40MHz, 80MHz, 160MHz, and 320MHz
  • the bandwidth may be regarded as composed of multiple 242-tone-RUs, and two-by-two replacements are performed inside each 242-tone-RU.
  • 40 MHz it can be divided into two 242-tone-RUs, and the permutation shown in FIG. 10B is performed for each 242-tone-RU.
  • the STA can map the first VRU allocated by the AP to the first PRU according to the replacement method shown in FIG. Indexes include [43:68] and [–68:–43].
  • the mapping relationship between the VRU and the PRU in the 20MHz bandwidth can be indicated by the relationship in Table 2 and Table 18.
  • the STA may determine the RU and subcarrier index included in the first PRU according to the first VRU indicated by the AP and look up the table 18 .
  • the STA can look up table 18 to determine that the first PRU subcarrier index includes [17:42] and [–42: –17], and send data on the first PRU subcarrier.
  • the first VRU indicated by the AP includes RU6 and RU8 in the 26-tone-RU of 20MHz
  • the STA can look up Table 18 to determine that the first PRU subcarrier index includes [–121:–96] and [70:95 ], and send data on the first PRU subcarrier.
  • Table 18 Data and pilot subcarrier index mapping table for each RU of the 20MHz EHT PPDU
  • subcarriers with indexes -122 and 122 in the above table 18 do not participate in the permutation, so the subcarrier indexes do not change before and after the permutation.
  • the data and pilot subcarrier indexes of each RU from 40MHz to 320MHz shown in Table 3-Table 6 are mapped index tables.
  • the manner of determining the mapped index table that is, the manner of determining table 18, may also be determined according to the mapping relationship shown in FIG. 10B , which will not be shown separately below. For example, assuming that the first VRU indicated by the AP includes RU2 and RU3 in the 26-tone-RU of 40 MHz, then the STA can determine that the RUs included in the first PRU can be RU7 and RU in the 26-tone-RU shown in Table 3. RU3, that is, the subcarrier indexes included in the first PRU include [–83:–58] and [–189:–164].
  • the replacement is performed at a granularity of 52-tone-RU, and it can also be regarded as a group of two 26-tone-RUs included in 52-tone-RU.
  • Figure 10A is bounded by the middle 26-tone-RU, and the two 26-tone-RUs contained in the even group are symmetrically replaced on both sides of the 26-tone-RU.
  • Figure 10B is the symmetrical replacement of the odd group on both sides of the 26-tone-RU. Contains 2 26-tone-RU.
  • the even group and the odd group can be regarded as, for example, the 9 26-tone-RUs contained in 242-tone-RU are numbered from 1 to 9.
  • RU1, RU2 is a group
  • the group number is 1
  • RU3, RU4 is a group
  • the group number is 2
  • RU6, RU7 is a group
  • the group number is 3
  • RU8, RU9 is a group
  • the group number is 4, the group number is even called the even group, and the group number is odd called the odd group.
  • the embodiment of the present application also provides another replacement method with 52-tone-RU as the minimum unit.
  • the 242-tone-RU contains four 52-tone-RUs, and the indexes are ⁇ 1, 2, 3, 4 ⁇ respectively.
  • the RU whose index is 1 at the symmetrical position may be replaced with the RU whose index is 3 at the symmetrical position. That is, the RU index contained in the PRU obtained after the permutation is ⁇ 3, 2, 1, 4 ⁇ .
  • the 52-tone-RU here is no longer regarded as composed of two 26-tone-RUs, but the 52-tone-RU is regarded as a whole.
  • the above-mentioned replacement method with 26-tone-RU as the minimum unit can also be used, or it can be replaced with a larger RU ( For example, 52-tone-RU, 106-tone-RU, etc.) as a unit (the larger RU is no longer considered to be composed of 26-tone-RU, but as a whole) for replacement.
  • a larger RU For example, 52-tone-RU, 106-tone-RU, etc.
  • the STA can determine that the first PRU carrier index includes [–121:–70] and [ 70:121], and send data on the first PRU subcarrier.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • replacement method 1 uses 242-tone-RU as the granularity to describe the replacement process performed inside the 242-tone-RU, and allocates bandwidth for resources containing multiple 242-tone-RUs, such as 40M, 80M, 160M, 320M and greater bandwidth can be implemented in each 242-tone-RU according to replacement method 1.
  • the 242-tone-RU can be regarded as including multiple 26-tone-RUs that are discretized in the frequency domain, so that the STA can send data on the first discrete PRU to obtain greater transmission power.
  • the above replacement method 1 can be applied to 20MHz, 40MHz, 80MHz, 160MHz and 320MHz, and larger bandwidths.
  • the above-mentioned permutation method 1 mainly takes the middle 26-tone-RU as the boundary, and performs discretization in a symmetrical permutation manner on the left and right sides of the middle 26-tone-RU, so that the subcarriers are dispersed more evenly.
  • the discretization may not be limited to a symmetrical method, and an asymmetrical method may be used for discretization, which is not limited in this application.
  • the following replacement method 2 can be used to make multiple 26-tone-RUs contained in 242-tone-RU more discrete in the frequency domain. It should be noted that, in large bandwidths such as 40MHz, 80MHz, 160MHz, and 320MHz, the aforementioned replacement method 1, which uses 26-tone-RU as the granularity, can still be used.
  • the second replacement method is to perform pairwise replacement between 242-tone-RU and 242-tone-RU.
  • the maximum resource bandwidth allocated by the AP is greater than or equal to 40 MHz, and the maximum resource bandwidth includes at least two 242-tone-RUs.
  • the second replacement method is to perform replacement between at least two 242-tone-RUs included in the above-mentioned maximum resource bandwidth.
  • the maximum resource bandwidth allocated by the AP is greater than or equal to the bandwidth composed of one or more first VRUs allocated to one or more STAs in the resource indication information. For example, when the maximum bandwidth allocated by the AP is 40 MHz, the AP may allocate RUs included in the 40 MHz shown in FIG. 3 to one or more STAs. The bandwidth of the first VRU composition allocated by the AP to one or more STAs is less than or equal to 40 MHz.
  • the replacement between 242-tone-RUs and 242-tone-RUs may be replacement between two adjacent 242-tone-RUs in the frequency domain. For example, a replacement is performed between the first 242-tone-RU and the second 242-tone-RU. Alternatively, two discontinuous 242-tone-RUs in the frequency domain may be replaced. For example, replacement is performed between the first 242-tone-RU and the third 242-tone-RU, or replacement is performed between the first 242-tone-RU and the fourth 242-tone-RU.
  • a 26-tone-RU is in the frequency domain before and after the replacement The interval is relatively far, so the mapped PRUs can be made more discrete.
  • the 26-tone-RU in the middle of each 242-tone-RU in the frequency domain is not considered, and a 242-tone-RU
  • the remaining 8 26-tone-RUs, every other 26-tone-RU, are replaced with the 26-tone-RU at the same position in another 242-tone-RU.
  • FIG. 11A it is a schematic diagram of the second replacement method in the embodiment of the present application.
  • the 242-tone-RU on the left contains 9 26-tone-RUs, the index is ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ , and the 242-tone-RU on the right contains 9 26-tones -RU, the indexes of the above nine 262-tone-RUs are respectively ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m.
  • m is an integer
  • m 9*a
  • a is an integer
  • a can be understood as the number of 242-tone-RUs spaced between two 242-tone-RUs.
  • m 0, 9, 18, 27, . . .
  • the index of the PRU obtained after replacement is ⁇ 1, 11+m, 3, 13+m, 5, 6, 16+m, 8, 18+m ⁇ , ⁇ 10+m, 2, 12+m, 4 , 14+m, 15+m, 7, 17+m, 9 ⁇ .
  • the first VRU allocated by the AP can be one or more of the 18 26-tone-RUs before the replacement.
  • the first VRU allocated by the AP is 106-tone-RU, then the AP can be allocated A first VRU is seen as containing four 26-tone-RUs.
  • the first PRU corresponding to the first VRU may be one or more of the 18 26-tone-RUs after replacement corresponding to the first VRU.
  • STA1 can obtain the replaced PRU according to the mapping relationship between VRU and PRU .
  • the RUs included in the PRU are the RUs with the index 1 and the index 11+m respectively in the frequency domain.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • the second replacement method is applicable to bandwidths of 40 MHz, 80 MHz, 160 MHz, 320 MHz and larger.
  • the 40MHz bandwidth includes two 242-tone-RUs, so when performing the second replacement method above, the replacement operation shown in Figure 11A can be performed on two adjacent 242-tone-RUs.
  • the 80MHz bandwidth includes four 242-tone-RUs. Therefore, when performing the second replacement method above, the replacement operation shown in FIG. 11A can be performed on two adjacent 242-tone-RUs.
  • the replacement operation shown in Figure 11A can be performed between the first 242-tone-RU and the second 242-tone-RU, or between the third 242-tone-RU and the fourth 242-tone - Execute the replacement operation as shown in FIG.
  • the replacement operation shown in FIG. 11A may also be performed on two non-adjacent 242-tone-RUs.
  • the replacement operation shown in Figure 11A can be performed between the first 242-tone-RU and the third 242-tone-RU, or between the second and fourth 242-tone-RU as shown in The permutation operation shown in Figure 11A.
  • the replacement operation shown in FIG. 11A may be performed between the first 242-tone-RU and the fourth 242-tone-RU.
  • the replacement operation as shown in FIG. 11A is performed on two adjacent 242-tone-RUs as an example for description.
  • the STA can map the first VRU allocated by the AP to the first VRU according to the replacement method shown in Figure 11A.
  • the PRU that is, the first PRU includes RU1 and RU11 in the 26-tone-RU shown in Table 2, and the subcarrier indexes include [–243:–218] and [30:55].
  • the mapping relationship between VRU and PRU under 20MHz bandwidth can be indicated by Table 3 and Table 18.
  • the STA may determine the RUs and subcarrier indexes included in the first PRU according to the first VRU lookup table 19 indicated by the AP.
  • the STA can look up Table 19 to determine that the first PRU subcarrier index includes [–243:–218] and [30 :55], and send data on the first PRU subcarrier.
  • Table 19 Data and pilot subcarrier index mapping table for each RU of 40MHz EHT PPDU
  • subcarriers with indexes -244, -3, 3 and 244 in the above Table 19 do not participate in the permutation, so the frequency domain of the above subcarriers does not change before and after the permutation.
  • the index table of the data and pilot subcarrier indexes of each RU from 80MHz to 320MHz shown in Table 4-Table 6 after mapping can also be determined according to the above-mentioned replacement method as shown in Figure 11A, for details, see
  • the determination method of the index table after the mapping of the data and pilot subcarrier index of each RU at 20 MHz above is the determination method in Table 19. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 80MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU1 and RU2 in the 26-tone-RU shown in Table 4.
  • RU11, subcarrier indices include [–499:–474] and [–226:–201].
  • Table 20 Data and pilot subcarrier index table of each RU of 80MHz EHT PPDU
  • subcarriers with indexes -500, -259, -253, -12, 12, 253, 259 and 500 in the above table 20 do not participate in the replacement, so the frequency domain of the above subcarriers does not change before and after the replacement.
  • Table 21 Data and pilot subcarrier index table of each RU of 160MHz EHT PPDU
  • indexes in the above table 21 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771 and 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 22 Data and pilot subcarrier index table for each RU of the 320MHz EHT PPDU
  • indexes in the above table 22 are -2036, -1795, -1789, -1548, -1524, -1283, -1277, -1036, -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771, 1012, 1036, 1277, 1283, 1524, 1548, 1789, 1795 and 2036 subcarriers do not participate in the permutation, so before and after permutation The frequency domain of the above subcarriers has not changed.
  • the replacement operation as shown in FIG. 11A is performed between two spaced 242-tone-RUs as an example for description.
  • the replacement operation shown in FIG. 11A is performed between the first 242-tone-RU and the third 242-tone-RU.
  • the STA can map the first VRU allocated by the AP to the first VRU according to the replacement method shown in Figure 11A.
  • the PRU that is, the first PRU includes RU1 and RU21 in the 26-tone-RU shown in Table 5, and the subcarrier indexes include [–499:–474] and [39:64].
  • the mapping relationship between VRU and PRU can be indicated by Table 5 and Table 23 under the bandwidth of 80MHz.
  • the STA may determine the RUs and subcarrier indexes included in the first PRU. Exemplarily, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 80MHz 26-tone-RU, then the STA can look up Table 23 to determine that the first PRU subcarrier index includes [–499:–474] and [39 :64], and send it on the first PRU subcarrier.
  • the STA can look up Table 23 to determine that the first PRU subcarrier index includes [–445:–420] and [93:118 ], and send on the first PRU subcarrier.
  • Table 23 Data and pilot subcarrier index table of each RU of 80MHz EHT PPDU
  • the subcarriers with indexes -500, -259, -256, -12, 12, 253, 259 and 500 do not participate in the mapping, so the indexes of the above subcarriers do not change before and after the permutation.
  • the index table after mapping the data and pilot subcarrier indexes of each RU from 160MHz to 320MHz shown in Table 5-Table 6 can also be determined according to the above-mentioned replacement method as shown in Figure 11A, for details, see
  • the determination method of the index table after mapping the data and pilot subcarrier index of each RU (the first VRU) at 20 MHz is the determination method of Table 23. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 160MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU1 and RU2 in the 26-tone-RU as shown in Table 5.
  • the subcarrier indexes included in the first PRU include [–1011:–986] and [–473:–448].
  • the indexes of the pilot subcarriers do not change before and after the permutation, which will not be repeated here.
  • Table 24 Data and pilot subcarrier index table for each RU of the 160MHz EHT PPDU
  • indexes in the above table 24 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 600, 524, 765, 771, 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 25 Data and pilot subcarrier index table for each RU of the 320MHz EHT PPDU
  • indexes in the above table 25 are -2036, -1795, -1789, -1548, -1524, -1283, -1277, -1036, -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771, 1012, 1036, 1277, 1283, 1524, 1548, 1789, 1795 and 2036 subcarriers do not participate in the permutation, so before and after permutation The frequency domain of the above subcarriers has not changed.
  • FIG. 11D it is a schematic diagram of the second replacement method in the embodiment of the present application.
  • the 242-tone-RU on the left contains 9 26-tone-RUs
  • the indexes are ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇
  • the 242-tone-RU on the right contains 9 26-tone-RU
  • the index is ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m.
  • m is an integer
  • m 9*a
  • a is an integer
  • a can be understood as the number of 242-tone-RUs spaced between two 242-tone-RUs.
  • m 0, 9, 18, 27, . . .
  • the indexes of the PRUs obtained after replacement are ⁇ 10+m, 2, 12+m, 4, 5, 15+m, 7, 17+m, 9 ⁇ , ⁇ 1, 11+m, 3, 13+ m, 14+m, 6, 16+m, 8, 18+m ⁇ .
  • the STA1 can obtain the replaced PRU according to the mapping relationship between VRU and PRU.
  • the RUs included in the PRU are the RUs with the index 10+m and the index 2 respectively in the frequency domain.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • the second replacement method is applicable to bandwidths of 40 MHz, 80 MHz, 160 MHz, 320 MHz and larger.
  • the 40MHz bandwidth includes two 242-tone-RUs, so when performing the second replacement method above, the replacement operation shown in Figure 11D can be performed on two adjacent 242-tone-RUs.
  • the 80MHz bandwidth includes four 242-tone-RUs, so when performing the second replacement method above, the replacement operation shown in Figure 11D can be performed on two adjacent 242-tone-RUs.
  • the replacement operation shown in Figure 11D can also be performed on two non-adjacent 242-tone-RUs, which will not be repeated here.
  • the replacement operation as shown in FIG. 11D is performed on two adjacent 242-tone-RUs as an example for description.
  • the STA can map the first VRU allocated by the AP to the first VRU according to the replacement method shown in Figure 11D.
  • the PRU that is, the first PRU includes RU10 and RU2 in the 26-tone-RU shown in Table 3, and the subcarrier indexes include [4:29] and [–217:–192].
  • the mapping relationship between VRU and PRU under 40MHz bandwidth can be indicated by Table 3 and Table 26.
  • the STA may determine the RUs and subcarrier indexes included in the first PRU. Exemplarily, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 40MHz 26-tone-RU, then the STA can look up table 26 to determine that the first PRU subcarrier index includes [4:29] and [–217: –192], and transmit data on subcarriers.
  • Table 26 Data and pilot subcarrier index mapping table for each RU of the 40MHz EHT PPDU
  • subcarriers with indexes -244, 244, 3 and -3 in the 242-tone-RU in Table 26 do not participate in the replacement, so the frequency domain of the above subcarriers does not change before and after the replacement.
  • the index table of the data and pilot subcarrier indexes of each RU from 80MHz to 320MHz shown in Table 4-Table 6 after mapping can also be determined according to the replacement method shown in Figure 11D above, for details, see
  • the determination method of the index table after mapping the data and pilot subcarrier index of each RU (the first VRU) at 20 MHz is the determination method of Table 26. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 80MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU10 and RU2 in the 26-tone-RU shown in Table 4. RU2, subcarrier indices include [–252:–227] and [–473:–448].
  • the data and pilot subcarrier index mapping tables for each RU from 80 MHz to 320 MHz corresponding to Table 4 to Table 6 are shown below.
  • Table 27 Data and pilot subcarrier index table for each RU of the 80MHz EHT PPDU
  • subcarriers with indexes -500, -259, -253, -12, 12, 253, 259 and 500 in the above Table 27 do not participate in the replacement, so the frequency domain of the above subcarriers does not change before and after the replacement.
  • Table 28 Data and pilot subcarrier index table for each RU of the 160MHz EHT PPDU
  • indexes in the above table 28 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771 and 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 29 Data and pilot subcarrier index table for each RU of the 320MHz EHT PPDU
  • two 242-tone-RUs at intervals perform the replacement operation as shown in FIG. 11D as an example for illustration.
  • the replacement operation shown in FIG. 11D is performed between the first 242-tone-RU and the third 242-tone-RU.
  • the STA can map the first VRU allocated by the AP to the first VRU according to the replacement method shown in Figure 11D.
  • the PRU that is, the first PRU includes RU20 and RU2 in the 26-tone-RU shown in Table 4, and the subcarrier indexes include [13:38] and [–473:–448].
  • the mapping relationship between VRU and PRU can be indicated by Table 4 and Table 30 under the 80MHz bandwidth.
  • the STA may determine the RUs and subcarrier indexes included in the first PRU according to the first VRU lookup table 30 indicated by the AP. Exemplarily, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 26-tone-RU of 80 MHz, then the STA can look up the table 30 and determine that the first PRU subcarrier index includes [13:38] and [–473: –448], and send on the first PRU subcarrier.
  • the STA can look up the table 30 to determine that the first PRU subcarrier index includes [67:92] and [–419:–394 ], and send on the first PRU subcarrier.
  • Table 30 Data and pilot subcarrier index table for each RU of the 80MHz EHT PPDU
  • the subcarriers with indexes -500, -259, -256, -12, 12, 253, 259 and 500 do not participate in the mapping, so the indexes of the above subcarriers do not change before and after the permutation.
  • the index table after mapping the data and pilot subcarrier indexes of each RU from 160MHz to 320MHz shown in Table 5-Table 6 can also be determined according to the above replacement method as shown in Figure 11D, for details, see
  • the determination method of the index table after mapping the data and pilot subcarrier index of each RU (the first VRU) at 20 MHz is the determination method of Table 30. For example, assuming that the first VRU indicated by the AP includes RU1 and RU2 in the 160MHz 26-tone-RU, then the STA can determine that the RUs included in the first PRU can be RU20 and RU2 in the 26-tone-RU shown in Table 5.
  • the subcarrier indexes included in the first PRU include [–499:–474] and [–985:–960].
  • the indexes of the pilot subcarriers do not change before and after the permutation, which will not be repeated here.
  • the following shows the mapping relationship between the data of each RU from 160 MHz to 320 MHz corresponding to Table 5-Table 6 and the pilot subcarrier index table.
  • Table 31 Data and pilot subcarrier index table for each RU of the 160MHz EHT PPDU
  • indexes in the above table 31 are -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771 and 1012
  • the sub-carriers of do not participate in the replacement, so the frequency domain of the above-mentioned sub-carriers does not change before and after the replacement.
  • Table 32 Data and pilot subcarrier index table for each RU of the 320MHz EHT PPDU
  • indexes in the above table 32 are -2036, -1795, -1789, -1548, -1524, -1283, -1277, -1036, -1012, -771, -765, -524, -500, -259, -253, -12, 12, 253, 259, 500, 524, 765, 771, 1012, 1036, 1277, 1283, 1524, 1548, 1789, 1795 and 2036 subcarriers do not participate in the permutation, so before and after permutation The frequency domain of the above subcarriers has not changed.
  • 11A-FIG. 11F above are illustrated by taking 26-tone-RU as the minimum unit of replacement as an example.
  • the replacement can be performed with 52-tone-RU as the minimum unit.
  • the RU indexes contained in the VRU before replacement include ⁇ 1, 2, 3, 4, 5, 6, 7, 8, 9 ⁇ , ⁇ 10, 11, 12, 13, 14, 15, 16, 17, 18 ⁇ +m.
  • the index of the RU contained in the permuted PRU includes ⁇ 1, 2, 12+m, 13+m, 5, 6, 7, 17+m, 18+m ⁇ , ⁇ 10+m, 11+m, 3 , 4, 14+m, 15+m, 16+m, 8, 9 ⁇ , or ⁇ 10+m, 11+m, 3, 4, 5, 15+m, 16+m, 8, 9 ⁇ , ⁇ 1, 2, 12+m, 13+m, 14+m, 3, 4, 17+m, 18+m ⁇ .
  • mapping tables similar to those shown in Table 11 and Table 12 can also be obtained.
  • the STA can determine that the RUs included in the first PRU can be as shown in Table 3 RU1, RU2, RU12 and RU13 in 26-tone-RU, that is, the subcarrier indexes contained in the first PRU include [–243:–218], [–217:–192], [58:83] and [84 :109].
  • the STA determines that the RUs included in the first PRU may be RU10, RU11, RU3, and RU4 in the 26-tone-RU shown in Table 3, that is, the subcarrier indexes included in the first PRU include [4:29], [30:55], [58:83], and [84:109].
  • the embodiment of the present application also provides another replacement method with 52-tone-RU as the minimum unit.
  • One 242-tone-RU contains four 52-tone-RUs, the indexes are ⁇ 1, 2, 3, 4 ⁇ respectively, and the other 242-tone-RU also contains four 52-tone-RUs, the indexes are respectively ⁇ 5, 6, 7, 8 ⁇ +k.
  • the 52-tone-RU here is no longer regarded as composed of two 26-tone-RUs, but the 52-tone-RU is regarded as a whole.
  • the 52-tone-RU at the same position in the two 242-tone-RUs can be replaced.
  • the 52-tone-RU with index 1 can be replaced with the 52-tone-RU with index 5+k
  • the 52-tone-RU with index 3 can be replaced with the 52-tone-RU with index 7+k.
  • the 52-tone-RU with index 2 can be replaced with the 52-tone-RU with index 6+k
  • the 52-tone-RU with index 4 can be replaced with the 52-tone-RU with index 8+k
  • k is an integer
  • k can be understood as the number of 242-tone-RUs spaced between two 242-tone-RUs.
  • STA1 can determine the first VRU The PRU includes RU5 and RU2 in the 52-tone-RU shown in Table 3, that is, the subcarrier indexes include [–252:–201] and [–445:–394]. Alternatively, STA1 may determine that the first PRU includes RU9 and RU2 in the 52-tone-RU shown in Table 3, that is, the subcarrier indexes include [13:64] and [–445:–394].
  • STA1 may determine that the first PRU includes RU1 and RU6 in the 52-tone-RU shown in Table 3, that is, the subcarrier index includes [–499:–448] and [–198:–147]. Alternatively, STA1 may determine that the first PRU includes RU1 and RU10 in the 52-tone-RU shown in Table 3, that is, the subcarrier indexes include [–499:–448] and [67:118].
  • the above-mentioned 26-tone-RU as the minimum unit can also be used in two 242-tone-RU
  • the method of replacing between RUs can also be based on the specific bandwidth in units of larger RUs (such as 52-tone-RU, 106-tone-RU, etc.) composition, but as a whole) for replacement, details can be referred to the foregoing embodiments, and will not be repeated one by one.
  • pilot subcarriers may or may not participate in the permutation.
  • pilot carriers may also be reassigned in the replaced PRU, which is not specifically limited in this application.
  • 106-tone-RU may be used as the minimum unit for replacement.
  • 106-tone-RU may be used as the minimum unit for replacement.
  • the replacement of 26-tone-RUs contained in two 242-tone-RUs at symmetrical positions may also be replaced at asymmetrical positions, which is not limited in this application.
  • mapping relationship 2 In this embodiment of the present application, the subcarrier index of the subcarrier included in the first VRU may be mapped to the subcarrier index of the subcarrier included in the first PRU.
  • some subcarriers do not participate in the mapping shown in mapping relationship 2, such as DC, Null, Guard, and Pilot tone, and the positions of these subcarriers in the VRU and PRU do not change.
  • each 1 MHz may include two subcarriers, and these two subcarriers are adjacent in the frequency domain, that is, these two subcarriers occupy adjacent frequency bands.
  • M t can be used to represent the number of 26-tone-RUs participating in mapping in 20MHz
  • Mc can be used to represent the number of subcarriers participating in mapping in a 26-tone-RU , 1 ⁇ M c ⁇ 26.
  • k is the index of the subcarrier contained in the VRU
  • k can be 0, 1, 2, 3,...
  • k' is the index of the subcarrier contained in the PRU
  • k' satisfies the following formula (1):
  • the STA may map the sequence index of the subcarrier of the VRU to the index of the subcarrier of the first PRU according to the above formula (1).
  • the subcarriers included in the VRU are called virtual subcarriers (virtual sub-carriers, VSC), and the subcarriers included in the PRU are called physical subcarriers (physical sub-carriers, PSC).
  • VSC virtual sub-carriers
  • PSC physical subcarriers
  • Use k to represent the index of the subcarrier in the VRU k is an integer, and k is 0, 1, 2, 3, ..., 24*9-1.
  • M c 24.
  • the range of the sequence index k of the VSC is [0,23].
  • the value of the sequence index k' of the PSC is [0,9,18,27,..., 23*9], increasing by 9.
  • the range of the sequence index k of the VSC is [24,47]
  • the value of the sequence index k' of the PSC after mapping is [1,10,19,28,...,23*9+1 ], incremented by 9.
  • the range of the sequence index k of the VSC is [48,71], and the value of the sequence index k' of the PSC after mapping is [2,11,20,29,...,23*9+2 ], incremented by 9.
  • the range of the sequence index k of the VSC is [72,95], and the value of the sequence index k' of the PSC after mapping is [3,12,21,30,...,23*9+3 ], incremented by 9.
  • the range of the sequence index k of the VSC is [96,119], and the value of the sequence index k' of the PSC after mapping is [4,13,22,31,...,23*9+4], In increments of 9.
  • the range of the sequence index k of the VSC is [192,215]
  • the value of the sequence index k' of the PSC after mapping is [8,17,26,35,...,23*9 +8], incremented by 9.
  • the AP allocates the first 26-tone-RU to the STA, it actually allocates the PRU mapped to the first 26-tone-RU to the STA. It should be understood that, for the second to ninth 26-tone-RUs, reference may be made to the description of the first 26-tone-RU above.
  • the sequence index of the subcarriers assigned to the STA is the union of [0,9,18,27,...,23*9] and [1,10,19,28,...,23*9+1], that is, [0 ,1,9,10,18,19,27,28,...,23*9,23*9+1].
  • the RU subcarriers are distributed over a larger bandwidth.
  • every two subcarriers are on adjacent frequency bands, for example, subcarriers with sequential indices 0 and 1, and subcarriers 9 and 10.
  • the average value of the channel estimates of these two subcarriers can be used as the channel estimation value, which is called channel smoothing (channel smoothing), which can make the estimation result more accurate.
  • channel smoothing channel smoothing
  • the first 106-tone-RU includes the first, second, third and fourth 26-tone-RU. If the AP allocates the first 106-tone-RU to the STA, it actually allocates the four PRUs mapped to the first, second, third and fourth 26-tone-RUs to the STA.
  • the sequence index of the subcarriers assigned to the STA is [0,9,18,27,...,23*9], [1,10,19,28,...,23*9+1], [2,11,20 ,29,...,23*9+2] and the union of [3,12,21,30,...,23*9+3], namely [0,1,2,3,9,10,11,12 ,18,19,20,21,..,23*9,23*9+1,23*9+2,23*9+3].
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the number of subcarriers shown above is 104, and the subcarriers with the lowest frequency and the subcarriers with the highest frequency do not participate in the mapping, so the frequency domain positions of the subcarriers with the lowest frequency and the subcarriers with the highest frequency do not change before and after mapping.
  • the index we used above is the serial number obtained in ascending order of the subcarrier index on the frequency band, and the serial number corresponds to the index of the subcarrier on the frequency band one by one, see Table 2-Table 6. If the pilot subcarriers do not participate in the mapping, then when numbering the data subcarriers, the pilot subcarriers contained in each 26-tone-RU can be ignored, that is, only the data subcarriers can be numbered to obtain the data Sequential index of subcarriers. Exemplarily, taking nine 26-tone-RUs contained in 20MHz as an example, the data subcarrier index contained in the first 26-tone-RU is [–121:–96], where the pilot subcarrier index ⁇ -116 ,-102 ⁇ . The data subcarrier index contained in the second 26-tone-RU is [–95:–70], where the pilot subcarrier index is ⁇ -90, -76 ⁇ ; and so on, you can get 9 26-tone-RU Contains the data subcarrier index.
  • Table 33 Frequency band index of pilot subcarriers in each RU
  • i represents the index of 26-tone-RU, and the value of i is also from low to high according to the order of 26-tone-RU in the frequency domain from low to high. Indicates the band index of the pilot subcarrier.
  • Table 34 Correspondence between the sequence index and frequency band index of the subcarriers in the first 26-tone-RU under 242-tone-RU
  • the data subcarrier sequence index number is 0 to 215, and the corresponding frequency band index is:
  • Under 484-tone-RU it can be regarded as containing 18 26-tone-RUs, where each 26-tone-RU has 2 pilot subcarriers and 24 data subcarriers, assuming 18 26-tone-RU All data subcarriers of the RU participate in the mapping.
  • Use k to represent the index of the VSC in the VRU then k is 0, 1, 2, 3,..., 24*18-1, and each VSC will be mapped to a PSC.
  • the range of index k of VSC is [0,23], after mapping, the value of index k' of PSC is [0,18,36,54,...,23* 18], in increments of 18.
  • the range of index k of VSC is [24,47].
  • the value of index k' of PSC is [1,19,37,55,...,23*18+1] , in increments of 18.
  • the value of the index k' of the PSC is [2, 20, 38, 56,..., 23*18+2], incremented by 18.
  • the tenth 26-tone-RU, after mapping, the value of the index k' of the PSC is [9, 27, 45, 63,..., 23*18+9], incremented by 18.
  • the value of the index k' of the PSC is [10, 28, 46, 64,..., 23*18+10], incremented by 18.
  • the thirteenth 26-tone-RU, after mapping, the value of the index k' of the PSC is [12, 30, 48, 66,..., 23*18+12], incremented by 18.
  • the second to eighteenth 26-tone-RUs refer to the description of the first 26-tone-RU above.
  • the first 52-tone-RU includes the first 26-tone-RU and the second 26-tone-RU. If the AP allocates the first 52-tone-RU to the STA, it allocates the two PRUs mapped to the first 26-tone-RU and the second 26-tone-RU to the STA. Then the PSC index after the first 52-tone-RU is mapped is [0,18,36,54,...,23*18] and [1,19,37,55,...,23*18+1] union.
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the second mapping method above can disperse the carriers in a larger bandwidth.
  • the index used above is a serial number obtained in ascending order of the subcarrier index on the frequency band, and the serial number corresponds to the subcarrier index on the frequency band one by one, see Table 2-Table 6.
  • the data subcarrier index contained in the first 26-tone-RU is [–243:–218], and the pilot subcarrier index is ⁇ -238, -224 ⁇ ;
  • the data subcarrier index contained in the second 26-tone-RU is [–217:–192], where the pilot subcarrier index is ⁇ -212,-198 ⁇ ;
  • the data subcarrier indexes included in 18 26-tone-RUs can be obtained.
  • the data subcarrier sequence index number is 0 to 431, and the corresponding frequency band index is:
  • the subcarriers can be mapped to a larger bandwidth, so that the continuous subcarriers on the VRU are located in frequency bands far apart in the PRU, which can increase the transmission power.
  • the second mapping method above can be applied to bandwidths of 20MHz, 40MHz, 80MHz, 160MHz and 320MHz.
  • the first mapping method and the second mapping method can also be used in combination. That is, the RU in the bandwidth (for example, with 26-tone-RU as the granularity) can be discrete in the frequency domain through the first mapping method, and then the adjacent subcarriers can be discrete in the frequency domain through the second mapping method, so that the mapping The obtained subcarriers included in the first PRU occupy a relatively large bandwidth, and compared with the single use of mapping method 1 or mapping method 2, greater transmission power can be obtained.
  • a 40 MHz bandwidth is taken as an example for description.
  • the subcarrier distribution of the PRU corresponding to the 52-tone-RU can actually be more dispersed.
  • multiple 26-tone-RUs in the 40 MHz bandwidth may perform the permutation operation as shown in FIG. 11B or FIG. 11C .
  • the indices of the subcarriers included in the mapped PRU are then obtained through the above formula (1).
  • the replacement of the first 52-tone-RU includes the first 26-tone-RU and the eleventh 26-tone-RU (RUs identified by 1 and 11 in FIG. 11B ).
  • the index of the obtained PSC is the index of the first 26-tone-RU and the eleventh 26-tone-RU after mapping [0,18,36,54,...,23*18] and [10 ,28,46,64,...,23*18+10], namely [0,10,18,28,36,46,54,64,...,23*18,23*18+10],
  • the adjacent subcarrier index interval is 10 or 8, which is close to 10.667.
  • the 52-tone has basically covered the 40MHz bandwidth. It can be seen that, compared with the mapping relationship 2, the combination of the mapping relationship 1 and the mapping relationship 2 can disperse the subcarriers on a larger bandwidth.
  • the first 106-tone-RU after the first 106-tone-RU is replaced, it includes the first, third, eleventh and thirteenth 26-tone-RUs (RUs represented by 1, 3, 11 and 13 in FIG. 11B ).
  • the resulting PSC index is the union of the first, third, eleventh, and thirteenth 26-tone-RU mapped PSC indices, ie [0,18,36,54,...,23*18] , [2,20,38,56,...,23*18+2], [10,28,46,64,...,23*18+10] and [12,30,48,66,...,23* 18+12] union.
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the data subcarrier sequence index number is 0 to 431, and the corresponding frequency band index is:
  • the data subcarrier sequence index number is 0 to 431
  • the corresponding frequency band index is:
  • each 26-tone-RU has 2 pilot subcarriers, 24 data subcarriers, we assume all data subcarriers of 36 26-tone-RU Participate in mapping.
  • the range of index k of VSC is [0,23]
  • the value of index k' of PSC is [0,36,72,...,23*36] , in increments of 36.
  • the range of index k of VSC is [24,47].
  • the value of index k' of PSC is [1,37,73,...,23*36+1], with 36 increments.
  • the value of the index k' of the PSC is [2, 38, 74,..., 23*36+2], incremented by 36.
  • the value of the index k' of the PSC is [3, 39, 75,..., 23*36+3], incremented by 36.
  • the tenth 26-tone-RU, after mapping, the value of the index k' of the PSC is [9, 45, 81,..., 23*36+9], incremented by 36.
  • the value of the index k' of the PSC is [10, 46, 82,..., 23*36+10], incremented by 36.
  • the thirteenth 26-tone-RU, after mapping, the value of the index k' of the PSC is [12, 48, 84,..., 23*36+12], incremented by 36.
  • the nineteenth 26-tone-RU, after mapping, the value of the index k' of the PSC is [18, 54, 90,..., 23*36+18], incremented by 36.
  • the twentieth 26-tone-RU, after mapping, the value of the index k' of the PSC is [19, 55, 91,..., 23*36+19], incremented by 36.
  • the value of the index k' of the PSC is [21, 57, 93,..., 23*36+21], incremented by 36.
  • the first 52-tone-RU includes the first 26-tone-RU and the second 26-tone-RU. If the AP allocates the first 52-tone-RU to the STA, it allocates the two PRUs mapped to the first 26-tone-RU and the second 26-tone-RU to the STA. Then the PSC index after the first 52-tone-RU is mapped is the union of [0,36,72,...,23*36] and [1,37,73,...,23*36+1]. Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the AP allocates the first 106-tone-RU to the STA
  • the first, second, third and fourth 26-tone-RU mapped four PRUs are allocated to the STA, corresponding to the mapped PSC
  • the indices are [0,36,72,...,23*36], [1,37,73,...,23*36+1], [2,38,74,...,23*36+2] and [3 ,39,75,...,23*36+3] union.
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the remaining RUs such as the second to thirty-second 52-tone-RUs, the second to the sixteenth 106-tone-RUs, etc., can refer to the above description, I won't repeat them here.
  • the indexes we used above are serial numbers obtained in ascending order of the subcarrier indexes on the frequency band, which correspond to the subcarrier indexes on the frequency band one by one, as shown in Table 2 to Table 6.
  • the data subcarrier index contained in the first 26-tone-RU is [–499:–474], where the pilot subcarrier index is ⁇ -494, -480 ⁇ ;
  • the data subcarrier index contained in the second 26-tone-RU is [–473:–448], where the pilot subcarrier index is ⁇ -468, -454 ⁇ ;
  • the data subcarrier indexes contained in 36 26-tone-RUs can be obtained.
  • the data subcarrier sequence index number is 0 to 863, and the corresponding frequency band index is:
  • the above mapping relationship can make the sub-carriers dispersed in a larger bandwidth.
  • the 484-tone-RU on the left and the 484-tone-RU on the right are respectively replaced in the manner shown in FIG. 11B or FIG. 11E .
  • the 484-tone-RU on the left and the 484-tone-RU on the right are respectively replaced in the manner shown in FIG. 11B under the bandwidth of 80 MHz as an example for illustration.
  • the 160MHz bandwidth can be regarded as a duplication of the above two 80MHz bandwidths
  • the 360MHz bandwidth can be regarded as a duplication of the above four 80MHz bandwidths.
  • the second 26-tone-RU (the RU indicated by 2 in Figure 11B) is replaced by the eleventh 26-tone-RU (the RU indicated by 11 in Figure 11B), and the index of the mapped PSC is the tenth
  • the index of the PSC after a 26-tone-RU mapping that is, [10, 46, 82, ..., 23*36+10], incremented by 36.
  • the first 52-tone-RU after the first 52-tone-RU is replaced, it includes the first 26-tone-RU (the RU indicated by 1 in FIG. 11B ) and the eleventh 26-tone-RU (the RU indicated by 11 in FIG. 11B ).
  • the index of the obtained PSC is the index of the first 26-tone-RU and the eleventh 26-tone-RU after the mapping of the PSC [0,36,72,...,23*36] and [10,46 ,82,...,23*36+10], that is, [0,10,36,46,72,82,...,23*36,23*36+10], the index interval of adjacent subcarriers is 10 Or 26, approaching or exceeding 12.8.
  • the 52-tone has basically covered the 80MHz bandwidth. It can be seen that, compared with the mapping relationship 2, the combination of the mapping relationship 1 and the mapping relationship 2 makes the subcarriers scattered on a larger bandwidth.
  • the first 106-tone-RU after the first 106-tone-RU is replaced, it includes the first, third, eleventh and thirteenth 26-tone-RUs (RUs represented by 1, 3, 11 and 13 in Figure 11B), after mapping, we get
  • the index of the PSC is the union of the index of the first, third, eleventh and thirteen 26-tone-RU mapped PSCs, namely [0,36,72,...,23*36], [2,38, 74,...,23*36+2], the union of [10,46,82,...,23*36+10] and [12,48,84,...,23*36+12].
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • the data subcarrier sequence index number is 0 to 863, and the corresponding frequency band index is:
  • the data subcarrier sequence index number is 0 to 863, and the corresponding frequency band index is:
  • n can also be 9, 18, 27 and so on.
  • the first 52-tone-RU after the first 52-tone-RU is replaced, it includes the first 26-tone-RU and the twentieth 26-tone-RU (the RUs represented by 1L and 2R in the figure), after mapping, we get
  • the index of the PSC is the first 26-tone-RU and the index of the PSC after the twentieth 26-tone-RU mapping [0,36,72,...,23*36] and [19,55,91,... ,23*36+19], that is, [0,19,36,55,72,91,...,23*36,23*36+19], the adjacent subcarrier index interval is 19 or 17, such as Subcarriers with indices 0 and 19, or subcarriers with indices 19 and 36, exceed 12.8.
  • the 52-tone has already filled the 80MHz bandwidth. It can be seen that, compared with the mapping relationship 2, the mapping relationship 1 and the mapping relationship 2 are combined, so that the subcarriers are scattered on a larger bandwidth.
  • the first 106-tone-RU after the first 106-tone-RU is replaced, it includes the first, twenty, third and twenty-two 26-tone-RUs (the RUs represented by 1L, 2R, 3L and 4R in the figure), after mapping, we get
  • the index of the PSC is the union of the index of the first, twenty, third and twenty-two 26-tone-RU mapped PSCs, that is, [0,36,72,...,23*36], [19,55 ,91,...,23*36+19], the union of [2,38,74,...,23*36+2] and [21,57,93,...,23*36+21].
  • Subcarriers distributed in adjacent frequency bands can be used for channel smoothing.
  • Subcarriers not in adjacent frequency bands are spaced at 17 or 19, such as subcarriers with indices 2 and 19, or subcarriers with indices 0 and 19, exceeding 12.8. It can be seen that, compared with the second mapping relationship, the combination of the first mapping relationship and the second mapping relationship enables subcarriers to be dispersed over a larger bandwidth.
  • the data subcarrier sequence index number is 0 to 863, and the corresponding frequency band index is:
  • the 26-tone-RU or 52-tone- RU performs pairwise permutation.
  • each 996-tone may adopt the mapping relationship shown in the above 996-tone-RU.
  • the same or different mapping relationships may be used, and all or only part of the 996-tones may be mapped and replaced, which is not specifically limited in this application.
  • mapping relationship between the VRU and the PRU can be agreed in advance by the agreement.
  • the mapping table provided by the embodiment of the present application is stored in advance, and the actual transmission data can be obtained by checking the table after determining the VRU according to the resource allocation indication information.
  • the mapping relationship can also be used as a rule, and the first communication device can further calculate the corresponding PRU according to the rule after receiving the resource indication information indicating the VRU; in addition, the resource allocation indication information can also be sent by the second communication device Notify the first communication device of the mapping relationship before or after or while sending the resource indication information, and the first communication device further obtains the PRU according to the resource indication information and the mapping relationship, which is not limited in this application.
  • the methods provided in the embodiments of the present application are introduced from the perspective of interaction between the STA and the AP.
  • the STA and the AP may include a hardware structure and/or a software module, and implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module. Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • FIG. 16 is a schematic block diagram of a communication device 1600 provided by an embodiment of the present application.
  • the communication device 1600 may correspondingly implement the functions or steps implemented by the STA or the AP in the foregoing method embodiments.
  • the communication device may include a processing unit 1610 and a transceiver unit 1620 .
  • a storage unit may also be included, and the storage unit may be used to store instructions (code or program) and/or data.
  • the processing unit 1610 and the transceiver unit 1620 may be coupled with the storage unit, for example, the processing unit 1610 may read instructions (code or program) and/or data in the storage unit to implement corresponding methods.
  • Each of the above units can be set independently, or can be partially or fully integrated.
  • the communication apparatus 1600 can correspondingly implement the behaviors and functions of the communication device at the sending end in the above method embodiments.
  • the communication device 1600 may be an AP, or a component (such as a chip or a circuit) applied in the AP.
  • the transceiver unit 1620 may be configured to perform all receiving or sending operations performed by the AP in the embodiment shown in FIG. 7 .
  • S701 and S703 in the embodiment shown in FIG. 7 and/or other processes used to support the technology described herein; wherein, the processing unit 1610 is configured to execute the process performed by the AP in the embodiment shown in FIG. 7 All operations other than transceiving operations, and/or other processes used to support the techniques described herein.
  • the processing unit 1610 is configured to generate resource indication information, where the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and the site of the site to which one or more first VRUs are allocated Information, the first VRU includes a plurality of continuous subcarriers in the frequency domain; the transceiver unit 1620 is configured to send resource indication information; the transceiver unit 1620 is also configured to receive data on the first PRU.
  • the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and the site of the site to which one or more first VRUs are allocated Information, the first VRU includes a plurality of continuous subcarriers in the frequency domain; the transceiver unit 1620 is configured to send resource indication information; the transceiver unit 1620 is also configured to receive data on the first PRU.
  • the communication apparatus 1600 can correspondingly implement the behaviors and functions of the communication device at the receiving end in the foregoing method embodiments.
  • the communication apparatus 1600 may be an STA or an AP, and may also be a component (such as a chip or a circuit) applied to the STA or the AP.
  • the transceiver unit 1620 may be configured to perform all receiving or sending operations performed by the second device in the embodiment shown in FIG. 7 .
  • the transceiver unit 1620 is configured to receive resource indication information, where the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and the site of the site to which one or more first VRUs are allocated Information, the first VRU includes a plurality of continuous subcarriers in the frequency domain; the processing unit 1610 is configured to determine the first physical resource unit PRU according to the resource indication information, where there is a mapping relationship between the first PRU and the first VRU, The first PRU includes a plurality of discrete subcarrier groups in the frequency domain, and a subcarrier group includes one subcarrier, or includes at least two continuous subcarriers; the transceiver unit 1620 is also configured to transmit data on the first PRU.
  • the resource indication information includes: resource unit allocation information for indicating one or more first virtual resource unit VRUs and the site of the site to which one or more first VRUs are allocated Information, the first VRU includes a plurality of continuous subcarriers in the frequency domain; the processing unit 1610
  • processing unit 1610 in the embodiment of the present application may be implemented by a processor or a processor-related circuit component
  • transceiver unit 1620 may be implemented by a transceiver or a transceiver-related circuit component or a communication interface.
  • the communication device 1700 provided by the embodiment of the present application wherein the communication device 1700 can be an AP or STA or an interleaver, can realize the function of the AP or STA in the method provided by the embodiment of the present application; the communication device 1700 can also It may be a device that can support the AP to implement the corresponding function in the method provided by the embodiment of the present application, or a device that can support the STA to implement the corresponding function in the method provided by the embodiment of the present application.
  • the communication device 1700 may be a chip or a chip system. In the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the transceiver unit 1620 may be the transceiver 1710 .
  • the communication device 1700 includes at least one processor 1720, configured to implement or support the communication device 1700 to implement the functions of the AP or STA in the method provided by the embodiment of the present application, for example, generate the aforementioned resource indication information.
  • Communications device 1700 may also include at least one memory 1730 for storing program instructions and/or data.
  • the memory 1730 is coupled to the processor 1720 .
  • the coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
  • Processor 1720 may cooperate with memory 1730 .
  • the processor 1720 may execute program instructions and/or data stored in the memory 1730, so that the communication device 1700 implements a corresponding method. At least one of the at least one memory may be located in the processor.
  • the communication device 1700 may further include a transceiver 1710 for communicating with other devices through a transmission medium, so that devices used in the communication device 1700 can communicate with other devices.
  • a transceiver 1710 for communicating with other devices through a transmission medium, so that devices used in the communication device 1700 can communicate with other devices.
  • the communication device is an AP
  • the other device is a STA or an AP; or, when the communication device is a STA, the other device is a STA or an AP.
  • the processor 1720 can utilize the transceiver 1710 to send and receive data.
  • the transceiver 1710 may specifically be a transceiver.
  • the communication device 1700 may also be a radio frequency unit, and the radio frequency unit may be independent from the communication device 1700 or integrated in the communication device 1700 .
  • the above-mentioned transceiver 1710 may also include an antenna, for example, a remote antenna independent from the communication device 1700 , or an antenna integrated in the communication device
  • a specific connection medium among the transceiver 1710, the processor 1720, and the memory 1730 is not limited.
  • the memory 1730, the processor 1720, and the transceiver 1710 are connected through a bus 1740.
  • the bus is represented by a thick line in FIG. 17, and the connection between other components is only for schematic illustration. , is not limited.
  • the bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 17 , but it does not mean that there is only one bus or one type of bus.
  • the processor 1720 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement Or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.
  • the memory 1730 may be a non-volatile memory, such as a hard disk (hard disk drive, HDD) or a solid-state drive (solid-state drive, SSD), etc., and may also be a volatile memory (volatile memory), For example random-access memory (random-access memory, RAM).
  • a memory is, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.
  • the memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, and is used for storing program instructions and/or data.
  • the communication device in the above-mentioned embodiments may be a terminal or a circuit, or a chip applied in a terminal or other combined devices or components having the functions of the above-mentioned terminal.
  • the transceiver unit may be a transceiver, which may include an antenna and a radio frequency circuit, etc.
  • the processing unit may be a processor, such as a central processing unit (central processing unit, CPU).
  • the transceiver unit may be a radio frequency unit
  • the processing unit may be a processor.
  • the transceiver unit may be an input and output interface of the chip or the chip system
  • the processing unit may be a processor of the chip or the chip system.
  • the AP and STA described in the embodiment of the present application can also be implemented using the following: one or more FPGAs (Field Programmable Gate Arrays), PLDs (Programmable Logic Devices), controllers , state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuitry capable of performing the various functions described throughout this application.
  • FPGAs Field Programmable Gate Arrays
  • PLDs Programmable Logic Devices
  • controllers state machines, gate logic, discrete hardware components, any other suitable circuitry, or any combination of circuitry capable of performing the various functions described throughout this application.
  • the communication device at the sending end in the embodiment of the present application may be an AP or an STA.
  • the communication device at the receiving end can be an AP or a STA.
  • the above-mentioned STA of various product forms has any function of the STA in the above-mentioned method embodiment, and realizes the steps performed by the STA in the above-mentioned method embodiment, and the beneficial effects produced can refer to the foregoing method embodiment, and will not be repeated here.
  • An embodiment of the present application further provides a communication system.
  • the communication system includes a second device and a first device, or may further include more first devices and second devices.
  • the communication system includes an STA or an AP configured to implement the above-mentioned related functions in FIG. 7 .
  • An embodiment of the present application also provides a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the method performed by the STA or AP in FIG. 7 .
  • the embodiment of the present application also provides a computer program product, including computer program code or instruction, when the computer program code or instruction is run on the computer, it causes the computer to execute the method performed by the STA or AP in FIG. 7 .
  • An embodiment of the present application provides a system-on-a-chip, where the system-on-a-chip includes a processor and may further include a memory, configured to implement the functions of the STA or AP in the foregoing method.
  • the system-on-a-chip may consist of chips, or may include chips and other discrete devices.
  • the embodiment of the present application also provides a communication device, including a processor and an interface; the processor is configured to execute the resource indication method described in any one of the above method embodiments.
  • the above-mentioned communication device may be a chip, and the processor may be implemented by hardware or by software.
  • the processor may be a logic circuit, an integrated circuit, etc.; when implemented by software
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, or may be located outside the processor and exist independently.
  • At least one item (piece) of a, b or c can represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b, c Can be single or multiple.
  • first and second are used to distinguish multiple objects, and are not used to limit the order, timing, priority or priority of multiple objects. Importance.
  • first information and the second information are only for distinguishing different indication information, and do not indicate the difference in priority or importance of the two kinds of information.
  • sequence numbers of the above-mentioned processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application.
  • the implementation process constitutes any limitation.
  • the word "exemplary” is used to indicate an example or description. Any embodiment or implementation described in the Summary of Embodiments of this application as an “example” should not be construed as preferred over other embodiments or implementations. That is, use of the term “example” is intended to present concepts in a concrete manner.
  • the methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present invention will be generated in whole or in part.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, network equipment, user equipment or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server, or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL) or wireless (such as infrared, wireless, microwave, etc.) means.
  • the computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media.
  • the available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), optical media (for example, digital video disc (digital video disc, DVD for short)), or semiconductor media (for example, SSD).

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Abstract

本申请提供一种资源指示方法和装置，涉及通信技术领域。该方法中，第一通信装置可以接收资源指示信息。其中，资源指示信息可以包括：用于指示一个或多个第一VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息。其中，第一PRU与第一VRU之间存在映射关系，第一通信装置在第一PRU上传输数据。由于连续VRU映射为离散PRU，相当于降低了每MHz上的子载波数，所以使得第二通信装置可支持更大的发送功率。本申请应用于支持IEEE 802.11ax下一代WiFi协议，如802.11be，或EHT等802.11系列协议的无线局域网系统。

Description

一种资源指示方法和装置
相关申请的交叉引用
本申请要求在2021年06月22日提交中国专利局、申请号为202110694205.4、申请名称为“一种资源指示方法和装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种资源指示方法和装置。
背景技术
目前，相关技术中定义了一种低功耗(low power indoor，LPI)的通信方式，对发送的最大功率和最大频谱密度进行了严格的限制。对于接入点(access point，AP)最大功率是36分贝毫瓦(decible-milliwatts，dBm)，最大频谱功率密度为5分贝毫瓦/兆赫兹(decible-milliwatts/megahertz，dBm/MHz)；对于站点(station，STA)最大功率是24dBm，最大功率频谱密度为-1dBm/MHz。
然而设备的发送功率同时受最大功率和最大功率频谱密度的限制，即设备发送的功率不能超过最大功率值，也不能超过最大功率频谱密度。因此，在最大功率和功率频谱密度受限的情况下，如果想给一个设备发送更大的功率，可以通过拓宽相应的发送带宽来达到相应目的。也就是说，使得分配给设备的子载波在频域上变得更加离散，即每MHz上的子载波数变少。由于不同大小的资源单元(resource unit，RU)可对应多种离散子载波的组合，因此需要定义更多的RU或者RU组合，并且指示这些RU或者RU组合。
发明内容
本申请提供一种资源指示方法和装置，以提高设备的发送功率。
第一方面，提供一种资源指示方法。该方法可以由第一通信装置执行，或者类似第一通信装置功能的芯片执行。第一通信装置可以是接收端的通信设备，例如可以是STA或者AP。该方法中，第一通信装置可以接收资源指示信息。其中，资源指示信息可以包括：用于指示一个或多个第一虚拟资源单元(virtual resource unit，VRU)的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；第一通信装置根据资源指示信息确定第一物理资源单元(physical resource unit，PRU)，其中，第一PRU与第一VRU之间存在映射关系，第一PRU包括多个在频域上离散的子载波组，一个子载波组包括一个子载波，或者包括至少两个连续的子载波；第一通信装置在第一PRU上传输数据。
基于上述方案，第一通信装置可以告知第二通信装置为第二通信装置分配的RU是VRU，但是第二通信装置在连续VRU映射后的离散PRU上发送数据。由于连续VRU映射为离散PRU，相当于降低了每MHz上的子载波数，所以使得第二通信装置可支持更大的发送功率。
在一种可能的实现方式中，映射关系包括：一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引的差值为第一设定值；或，一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引相同；其中，一个或多个第一VRU中的一个第一VRU的索引是根据资源单元分配信息确定的。
基于上述方案，可以根据第一VRU的索引，将第一VRU映射为离散的第一PRU，第二通信装置在离散PRU上发送数据，使得第二通信装置可支持更大的发送功率。
在一种可能的实现方式中，映射关系具体包括：以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是一个整数，q＝9*b，b为整数，表示第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；其中，一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应一个或多个第一VRU中的一个第一VRU的第一PRU索引是为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
基于上述方案，可以将多个第一VRU以类似对称的方式进行映射得到多个第一PRU。由于对称的方式可以相对公平的将连续的VRU映射为离散的PRU，在第一通信装置分配的VRU数量较少带宽较小时，也能够尽可能的将分配的VRU映射为离散PRU。
在一种可能的实现方式中，映射关系具体包括：第二通信装置分配的最大资源带宽可以大于或等于40MHz，最大资源带宽可以包括至少2个242-tone-RU,以至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m，18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是一个整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝0,9,18,27,…。
基于上述方案，可以使得连续的两个VRU的间隔较远，可以尽可能的将连续的VRU映射为离散的PRU，在第一通信装置分配的VRU数量较多带宽较大时，可以得到更加离散的PRU。
在一种可能的实现方式中，第一VRU的序号为k的子载波，基于映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
Figure PCTCN2022095006-appb-000001
其中，M t表示每20MHz中参与映射的第一VRU的数目，M t为整数，1≤M t≤9，x为整数，x＝1,2,4,8,16，…，M t*x表示参与映射的第一VRU的总数目，mod()表示取余操作， M c表示一个第一VRU中参与映射的子载波数目，1≤M c≤26，k＝0,1,2…，M t*M c*x-1。其中，x可以表示前述资源单元分配信息指示的最大带宽中包含的20MHz的数目。
基于上述方案，可以将VRU中的子载波映射至PRU上的子载波，通过上述公式可以将连续的两个子载波的间距拉宽，使得PRU中包含的子载波更加离散。
在一种可能的实现方式中，第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
基于上述方案，可以根据子载波的索引将第一VRU包含的子载波映射为第一PRU包含的子载波，将连续的两个子载波的间距拉宽，使得PRU中包含的子载波更加离散。
第二方面，提供一种资源指示方法，该方法可以由第二通信装置执行，或者类似第二通信装置的功能的芯片执行。其中，第二通信装置可以是发送端的通信设备，例如可以是AP。该方法中，第二通信装置发送资源指示信息，资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；第二通信装置在第一物理资源单元PRU上接收数据，其中，第一PRU与第一VRU之间存在映射关系，第一PRU包括多个在频域上离散的子载波组，一个子载波组包括一个子载波，或者包括至少两个连续的子载波；第二通信装置在第一PRU上接收数据。
在一种可能的实现方式中，映射关系包括：一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引的差值为第一设定值；或，一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引相同；其中，一个或多个第一VRU中的一个第一VRU的索引是根据资源单元分配信息确定的。
在一种可能的实现方式中，映射关系具体包括：以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是一个整数，q＝9*b，b为整数，表示第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；其中，一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应一个或多个第一VRU中的一个第一VRU的第一PRU索引是为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
在一种可能的实现方式中，映射关系具体包括：第二通信装置分配的最大资源带宽可以大于或等于40MHz，最大资源带宽可以包括至少2个242-tone-RU,以至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16， 17，18}+m，18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是一个整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝0,9,18,27,…。
在一种可能的实现方式中，第一VRU的序号为k的子载波，基于映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
Figure PCTCN2022095006-appb-000002
其中，M t表示每20MHz中参与映射的第一VRU的数目，M t为整数，1≤M t≤9，x为整数，x＝1,2,4,8,16，…，M t*x表示参与映射的第一VRU的总数目，mod()表示取余操作，M c表示一个第一VRU中参与映射的子载波数目，1≤M c≤26，k＝0,1,2…，M t*M c*x-1。其中，x可以表示前述资源单元分配信息指示的最大带宽中包含的20MHz的数目。
在一种可能的实现方式中，第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
第三方面，提供一种通信装置。通信装置可用于执行上述第一方面或第一方面的任一可能的实现方式中的方法。具体地，通信装置可以包括用于执行第一方面或第一方面的任一可能的实现方式中的方法的模块或单元，例如包括处理单元和收发单元。示例性地，通信装置为前述的接收端的通信设备。其中，收发单元，用于接收资源指示信息，资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；处理单元，用于根据资源指示信息确定第一物理资源单元PRU，其中，第一PRU与第一VRU之间存在映射关系，第一PRU包括多个在频域上离散的子载波组，一个子载波组包括一个子载波，或者包括至少两个连续的子载波；收发单元，还用于在第一PRU上传输数据。
在一种设计中，映射关系包括：一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引的差值为第一设定值；或，一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引相同；其中，一个或多个第一VRU中的一个第一VRU的索引是根据资源单元分配信息确定的。
在一种设计中，映射关系具体包括：以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是一个整数，q＝9*b，b为整数，表示第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；其中，一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应一个或多个第一VRU中的一个第一VRU的第一PRU索引是为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一 个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
在一种设计中，映射关系具体包括：第二通信装置分配的最大资源带宽可以大于或等于40MHz，最大资源带宽可以包括至少2个242-tone-RU,以至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m，18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是一个整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝0,9,18,27,…。
在一种设计中，第一VRU的序号为k的子载波，基于映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
Figure PCTCN2022095006-appb-000003
其中，M t表示每20MHz中参与映射的第一VRU的数目，M t为整数，1≤M t≤9，x为整数，x＝1,2,4,8,16，…，M t*x表示参与映射的第一VRU的总数目，mod()表示取余操作，M c表示一个第一VRU中参与映射的子载波数目，1≤M c≤26，k＝0,1,2…，M t*M c*x-1。其中，x可以表示前述资源单元分配信息指示的最大带宽中包含的20MHz的数目。
在一种设计中，第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
第四方面，提供一种通信装置。通信装置可用于执行上述第二方面或第二方面的任一可能的实现方式中的方法。具体地，通信装置可以包括用于执行第二方面或第二方面的任一可能的实现方式中的方法的模块或单元，例如包括处理单元和收发单元。示例性地，通信装置为前述的发送端的通信设备。其中，处理单元，用于生成资源指示信息，资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；收发单元，用于发送资源指示信息；收发单元，还用于在第一PRU上接收数据。
在一种设计中，映射关系包括：一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引的差值为第一设定值；或，一个或多个第一VRU中的一个第一VRU的索引与其对应的第一PRU的索引相同；其中，一个或多个第一VRU中的一个第一VRU的索引是根据资源单元分配信息确定的。
在一种设计中，映射关系具体包括：以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是一个整数，q＝9*b，b表示第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；其中，一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应一个或多个第一VRU中的一个第一VRU的第一PRU索引是为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一 VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
在一种设计中，映射关系具体包括：第二通信装置分配的最大资源带宽可以大于或等于40MHz，最大资源带宽可以包括至少2个242-tone-RU,以至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m，18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是一个整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝0,9,18,27,…。
在一种设计中，第一VRU的序号为k的子载波，基于映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
Figure PCTCN2022095006-appb-000004
其中，M t表示每20MHz中参与映射的第一VRU的数目，1≤M t≤9，x＝1,2,4,8,16，…，M t*x表示参与映射的第一VRU的总数目，mod()表示取余操作，M c表示一个第一VRU中参与映射的子载波数目，1≤M c≤26，k＝0,1,2…，M t*M c*x-1。
在一种设计中，第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
第五方面，本申请实施例提供一种通信装置，该通信装置可以为上述实施例中第三方面至第四方面中任一方面的通信装置，或者为设置在第三方面至第四方面中任一方面的通信装置中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令或者数据，处理器与存储器、通信接口耦合，当处理器读取所述计算机程序或指令或数据时，使通信装置执行上述第一方面至第二方面中任一方面方法实施例中由发送端的通信设备或接收端的通信设备所执行的方法。
应理解，该通信接口可以通过所述通信装置中的天线、馈线和编解码器等实现，或者，如果通信装置为设置在发送端的通信设备或接收端的通信设备中的芯片，则通信接口可以是该芯片的输入/输出接口，例如输入/输出管脚等。所述通信装置还可以包括收发器，用于该通信装置与其它设备进行通信。示例性地，当该通信装置为发送端的通信设备时，该其它设备为接收端的通信设备；或者，当该通信装置为接收端的通信设备时，该其它设备为发送端的通信设备。
第六方面，本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现第三方面至第四方面中任一方面中的通信装置执行的方法。在一种可能的实现方式中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
第七方面，本申请实施例提供了一种通信系统，所述通信系统包括第三方面和所述第四方面所述的通信装置。
第八方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序或指令，当该计算机程序或指令被运行时，实现上述各方面中由接收端的通信设备执行的方法；或实现上述各方面中由发送端的通信设备执行的方法。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码或指令，当所述计算机程序代码或指令被运行时，使得上述各方面中由接收端的通信设备执行的方法被执行，或使得上述各方面中由发送端的通信设备执行的方法被执行。
上述第二方面至第八方面及其实现方式的有益效果可以参考对第一方面的方法及其实现方式的有益效果的描述。
附图说明
图1为本申请实施例适用的一种无线局域网的网络架构；
图2为20MHz的子载波分布及RU分布示意图；
图3为40MHz的子载波分布及RU分布示意图；
图4为80MHz的子载波分布及RU分布示意图；
图5为子载波离散的26-tone-RU的分布示意图；
图6为子载波离散的52-tone-RU的分布示意图；
图7为本申请实施例提供的资源指示方法的示例性流程图；
图8为本申请实施例提供的VRU的置换示意图；
图9A为本申请实施例提供的置换方式一的示意图之一；
图9B为本申请实施例提供的置换方式一的示意图之一；
图10A为本申请实施例提供的置换方式一的示意图之一；
图10B为本申请实施例提供的置换方式一的示意图之一；
图11A为本申请实施例提供的置换方式二的示意图之一；
图11B为本申请实施例提供的置换方式二的示意图之一；
图11C为本申请实施例提供的置换方式二的示意图之一；
图11D为本申请实施例提供的置换方式二的示意图之一；
图11E为本申请实施例提供的置换方式二的示意图之一；
图11F为本申请实施例提供的置换方式二的示意图之一；
图12A为本申请实施例提供的子载波的映射示意图之一；
图12B为本申请实施例提供的子载波的映射示意图之一；
图13为本申请实施例提供的242-tone-RU的分布子载波示意图；
图14为本申请实施例提供的484-tone-RU的分布子载波示意图；
图15为本申请实施例提供的996-tone-RU的分布子载波示意图；
图16为本申请实施例提供的通信装置的一种结构示意图；
图17为本申请实施例提供的通信装置的另一种结构示意图。
具体实施方式
为了使本申请实施例的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例可以适用于无线局域网(wireless local area network，WLAN)的场景，可以适用于IEEE 802.11系统标准，例如802.11a/b/g、802.11n、802.11ac、802.11ax，或其下一代，例如802.11be或更下一代的标准中。或者本申请实施例也可以适用于物联网(internet of things，IoT)网络或车联网(Vehicle to X，V2X)网络等无线局域网系统中。当然，本申请实施例还可以适用于其他可能的通信系统，例如，LTE系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、5G通信系统、以及未来的6G通信系统等。
下文以本申请实施例可以适用于WLAN的场景为例。应理解，WLAN从802.11a/g标准开始，历经802.11n、802.11ac、802.11ax和如今正在讨论的802.11be。其中802.11n也可称为高吞吐率(high throughput,HT)；802.11ac也可称为非常高吞吐率(very high throughput，VHT)；802.11ax也可称为高效(high efficient，HE)或者Wi-Fi 6；802.11be也可称为极高吞吐率(extremely high throughput，EHT)或者(Wi-Fi 7)，而对于HT之前的标准，如802.11a/b/g等统称叫做非高吞吐率(Non-HT)。
参阅图1，示出了本申请实施例适用的一种WLAN的网络架构图。图1以该WLAN包括1个无线接入点(access point，AP)和2个站点(station，STA)为例。与AP关联的STA，能够接收该AP发送的无线帧，也能够向该AP发送无线帧。另外，本申请实施例同样适用于AP与AP之间的通信，例如各个AP之间可通过分布式系统(distributed system，DS)相互通信，本申请实施例也适用于STA与STA之间的通信。应理解，图1中的AP和STA的数量仅是举例，还可以更多或者更少。
其中，接入点可以为终端设备(如手机)进入有线(或无线)网络的接入点，主要部署于家庭、大楼内部以及园区内部，典型覆盖半径为几十米至上百米，当然，也可以部署于户外。接入点相当于一个连接有线网和无线网的桥梁，主要作用是将各个无线网络客户端连接到一起，然后将无线网络接入以太网。具体的，接入点可以是带有Wi-Fi芯片的终端设备(如手机)或者网络设备(如路由器)。接入点可以为支持802.11be制式的设备。接入点也可以为支持802.11ax、802.11ac、802.11n、802.11g、802.11b、802.11a以及802.11be下一代等802.11家族的多种无线局域网(wireless local area networks，WLAN)制式的设备。本申请中的接入点可以是高效(high efficient,HE)AP或极高吞吐量(extremely high throughput,EHT)AP，还可以是适用未来某代Wi-Fi标准的接入点。
站点可以为无线通讯芯片、无线传感器或无线通信终端等，也可称为用户。例如，站点可以为支持Wi-Fi通讯功能的移动电话、支持Wi-Fi通讯功能的平板电脑、支持Wi-Fi通讯功能的机顶盒、支持Wi-Fi通讯功能的智能电视、支持Wi-Fi通讯功能的智能可穿戴设备、支持Wi-Fi通讯功能的车载通信设备和支持Wi-Fi通讯功能的计算机等等。可选地，站点可以支持802.11be制式。站点也可以支持802.11ax、802.11ac、802.11n、802.11g、802.11b、802.11a、802.11be下一代等802.11家族的多种无线局域网(wireless local area networks，WLAN)制式。
本申请中的站点可以是高效(high efficient,HE)STA或极高吞吐量(extremely high throughput,EHT)STA，还可以是适用未来某代Wi-Fi标准的STA。
例如，接入点和站点可以是应用于车联网中的设备，物联网(IoT，internet of things)中 的物联网节点、传感器等，智慧家居中的智能摄像头，智能遥控器，智能水表电表，以及智慧城市中的传感器等。
本申请实施例所涉及到的AP和STA可以为适用于IEEE 802.11系统标准的AP和STA。AP是部署在无线通信网络中为其关联的STA提供无线通信功能的装置，该AP可用作该通信系统的中枢，通常为支持802.11系统标准的MAC和PHY的网络侧产品，例如可以为基站、路由器、网关、中继器，通信服务器，交换机或网桥等通信设备，其中，所述基站可以包括各种形式的宏基站，微基站，中继站等。在此，为了描述方便，上面提到的设备统称为AP。STA通常为支持802.11系统标准的介质访问控制(media access control，MAC)和物理层(physical，PHY)的终端产品，例如手机、笔记本电脑等。
AP与STA进行通信，AP可以为STA分配资源，STA在被分配的资源上进行数据的收发。例如AP和STA之间可以采用应用正交频分多址(orthogonal frequency division multiple access，OFDMA)，也可以采用多用户多入多出(multi-users multiple-input multiple-output，MU-MIMO)技术进行无线通信。应理解，STA传输数据实际占用的资源为PRU，但是AP为STA分配的资源可以是PRU，也可以是虚拟资源单元VRU。VRU是指虚拟的RU，是相对PRU而言的。如果AP为STA分配的资源可能是VRU，STA接收到VRU之后，可将VRU转换为PRU，再在PRU上发送数据。
在OFDMA及MU-MIMO技术中，WLAN协议会将频谱带宽划分为若干个RU。例如802.11ax协议支持的带宽配置包括20MHz、40MHz、80MHz、160MHz及80+80MHz。例如802.11be协议支持的带宽配置除了802.11ax协议支持的带宽配置，还可以支持320MHz。其中，160MHz与80+80MHz的区别在于前者为连续频带，而后者的两个80MHz间可以分离，即80+80MHz组成的160MHz是不连续的。IEEE 802.11ax协议规定对于20MHz、40MHz、80MHz和160MHz，可将频谱带宽划分成多类RU，其中包括26子载波RU、52子载波RU、106子载波RU、242子载波RU(20MHz带宽内最大RU)，484子载波RU(40MHz带宽内最大RU)，996子载波RU(80MHz带宽内最大RU)，和2*996子载波RU(160MHz带宽内最大RU)。每个RU由连续的子载波组成，比如26子载波RU由26个连续的子载波RU组成。在下文中，26子载波RU记为26-tone-RU，52子载波RU记为52-tone-RU，等等，以此类推。整个带宽除了用于传输数据的26-tone-RU、52-tone-RU等，还包括其他子载波，例如保护(Guard)子载波、空子载波以及直流(direct current，DC)子载波、导频子载波中的一种或多种。
参阅图2，为20MHz的子载波分布及RU分布示意图。如图2所示，当带宽为20MHz时，整个带宽可以由一整个242-tone-RU组成，也可以由26-tone-RU，52-tone-RU，106-tone-RU的各种组合组成，例如20MHz可由8个26-tone-RU、4个52-tone-RU或者2个106-tone-RU组成。从图2可以看出，1个242-tone-RU的带宽大约为20MHz，1个106-tone-RU的带宽大约为8MHz，1个52-tone-RU的带宽大约为4MHz，1个26-tone-RU的带宽大约为2MHz。需要说明的是，整个带宽还包括一些保护子载波、空子载波以及直流子载波、导频子载波中的一种或多种，例如图2所示的20MHz还包括保护子载波、空子载波以及直流子载波。
参阅图3，当带宽为40MHz时，整个带宽大致相当于2个20MHz的子载波分布的复制，整个带宽可以由一整个484-tone-RU组成，也可以由26-tone-RU，52-tone-RU，106-tone-RU，242-tone-RU的各种组合组成，如图3所示。图3中的“5DC”表示5个直 流子载波。与20MHz类似，40MHz也包括一些保护子载波、空子载波以及直流子载波中的一种或多种。应理解，484-tone-RU的带宽大约为40MHz。
参阅图4，当带宽为80MHz时，整个带宽由4个242-tone-RU为单位的资源单元组成。整个带宽可以由整个996-tone-RU组成，也可以由26-tone-RU，52-tone-RU，106-tone-RU，242-tone-RU，484-tone-RU的各种组合组成，如图4所示。图4中的484L，484R代表484-tone-RU的左半部分和右半部分，分别包含242个子载波，是图3中“484+5DC”的另一种示意。图4中的“5DC”表示5个直流子载波，“23DC”表示23个直流子载波。与20MHz类似，80MHz也包括一些保护子载波、空子载波以及直流子载波中的一种或多种。应理解，996-tone-RU的带宽大约为80MHz。
应理解，当带宽为160MHz时，整个带宽可以看作是2个80MHz的子载波分布的复制，整个带宽可以由一整个2*996-tone-RU组成，也可以由26-tone-RU，52-tone-RU，106-tone-RU，242-tone-RU，484-tone-RU，996-tone-RU的各种组合组成。同理，当带宽为320MHz时，整个带宽可以看作是4个80MHz的子载波分布的复制，整个带宽可以由4个996-tone-RU为单位的资源单元组成。为了简便，160MHz和320MHz的子载波分布及RU分布不再单独示意。
上述的各种子载波分布，以242-tone-RU为单位，图2-图4的左边的RU对应最低频率，图2-图4的右边的RU对应最高频率。从左到右，可以对242-tone-RU进行标号：1st,2nd,…,16th。需要说明的是，至多16个242-tone-RU与16个20MHz信道按照频率从低到高一一对应。
除了上边提到的几种RU，802.11be协议还引入了一个52-tone-RU和一个26-tone-RU组成的52+26-tone-RU；一个106-tone-RU和一个26-tone-RU组成的106+26-tone-RU；一个484-tone-RU和一个242-tone-RU组成的484+242-tone-RU；一个996-tone-RU和一个484-tone-RU组成的996+484-tone-RU；一个242-tone-RU、一个484-tone-RU和一个996-tone-RU组成的242+484+996-tone-RU；两个996-tone-RU和一个484-tone-RU组成的2*996+484-tone-RU；3个996-tone-RU组成的3*996-tone-RU；3个996-tone-RU和一个484-tone-RU组成的3*996+484-tone-RU等等。这些组合起来的RU可以称为多RU，应理解，多RU是由多个RU组成的RU。在一些实施例中，多RU可记为Multi-RU，也可记为MRU。
带宽层面，26-tone-RU大约对应2MHz,52-tone-RU大约对应4MHz,106-tone-RU大约对应8MHz。242-tone-RU大约对应20MHz，不再赘述。
在介绍本申请提供的方法之前，首先对本申请中涉及的相关概念进行说明。
1)、连续RU。
本申请中的连续RU包括标准已定义的RU和MRU。其中，标准已定义的RU可以由连续的多个子载波组成的RU，标准已定义的MRU可以由两组连续子载波组组成的RU，每组所述连续子载波组包括的多个子载波是连续的，两组子载波组之间仅被保护子载波、空子载波、或者直流子载波中的一种或多种间隔。802.11ax中支持的RU均可理解为连续RU。连续RU又可称作常规RU。当然，连续RU也可以为其他名称，本申请实施例对连续RU的具体名称不作限定。
在本申请实施例中，将包括K个子载波(如数据子载波和导频子载波)的连续RU称为连续K-tone-RU。比如，连续26-tone-RU是指包括26个子载波的连续RU。即，连续 K-tone-RU的概念和现有的802.11ax标准中的K-tone-RU的概念相同。
2、离散RU(distribute RU，DRU)。
相对连续RU而言，包括多个在频域上离散的子载波组的RU可称为离散RU，即离散RU包括多个子载波组，并且任意两个子载波组在频域上离散。其中，一个子载波组包括一个子载波，或者，一个子载波组至少包括两个连续的子载波，即，一个子载波组包括一个子载波或者包括多个连续的子载波。离散RU又可称作分布式RU(distributed RU，DRU)。当然在其他实施例中，离散RU也可以的名称也可以为其他名称，本申请不限定离散RU的名称。本申请中的一个离散RU包括的子载波组的数量大于或等于2。
在本申请实施例中，可将包括K个子载波的离散RU称为离散K-tone-RU。比如，离散26-tone-RU是指包括26个子载波的离散RU。其中，K的大小可以参照连续RU所采用的K的取值。例如，带宽为20MHz时，20MHz可包括离散26-tone-RU、离散52-tone-RU，离散106-tone-RU，离散242-tone-RU中的一种或多种的组合。
本申请中，一个离散RU可以与另一个离散RU组成离散MRU，该离散MRU能够被分配给一个或多个站点。例如，离散242-tone-RU和离散484-tone-RU可组成离散484+242-tone-RU。
在一些示例中，离散RU所包括的多个子载波组中的任意两个子载波组所包括的子载波的数量可以是相同的也可以是不同的。例如，每个子载波组的子载波数量可以均为1。又如，一部分子载波组的子载波数量为1，另一部分子载波组的子载波数量为2，即，一个离散RU可以包括4个子载波组，4个子载波组中的子载波数量可以依次为1，1，2，2。
在一些示例中，在离散RU所包括的子载波组的数量大于或等于3的情况下，离散RU所包括的多个离散的子载波组中，两两相邻的子载波组之间间隔的子载波数量可以相同也可以不相同。两两相邻的子载波组是指一个离散RU的两个相邻的子载波组。
目前，设备发送的功率同时受最大功率和最大功率谱密度的限制，即设备发送的功率不能超过最大功率值，也不能超过最大功率谱密度，即每MHz的发送功率不能超过给定值。示例性的，请参阅表1，示出了LPI场景下，设备发送的最大功率与带宽之间的对应关系。
表1
带宽 AP发送的最大功率 STA发送的最大功率
20MHz 18dBm 12dBm
40MHz 21dBm 15dBm
80MHz 24dBm 18dBm
160MHz 27dBm 21dBm
320MHz 30dBm 24dBm
应理解，以表1中的20MHz为例，18dBm–5dBm＝13dB，13dB＝10^1.3＝19.95，约等于20MHz，可知某发送带宽下的最大功率约等于每MHz都达到最大发送功率时的值。在功率谱密度受限的情况下，可以通过拓宽相应的发送带宽使得设备发送更大的功率。从图2-图4中子载波分布及RU分布可以看出，带宽内的所有子载波是连续的，即图2-图4中的RU为连续RU。相较于离散RU，连续RU包括的每个子载波所对应的带宽较小，自 然无法通过发送带宽来增大设备发送的最大功率。例如，AP为STA分配一个离散的26-tone-RU，该离散26-tone-RU同样包括26个子载波，但这26个子载波可以分散在多个26-tone-RU上，相较于前述连续的26-tone-RU来说，尽管未增加分配给设备的子载波，但是分配给设备的子载波在频域上变得更加离散，使得每MHz上的子载波数变少，从子载波的角度而言，相当于扩宽了每个子载波对应的带宽，所以设备可支持更大的发送功率。
例如，参阅图5示出了一个子载波离散的26-tone-RU的分布示意图。图5以80MHz为例，其中，26-tone-RU包括24个数据子载波和2个导频子载波。如图5所示，24个数据子载波可以包括第一个连续26-tone-RU中的12个数据子载波，以及第6个连续26-tone-RU中的12个子载波。
又例如，参阅图6示出了一个子载波离散的52-tone-RU的分布示意图。图6以80MHz为例，其中，52-tone-RU包括48个数据子载波和4个导频子载波。如图6所示，48个数据子载波可以包括第一个连续52-tone-RU中的12个子载波、第3个连续52-tone-RU中的12个子载波、第5个连续26-tone-RU中的12个子载波以及第7个连续26-tone-RU中的12个子载波。
需要说明的是，图5和图6中数据子载波的离散分布(离散设计)方式仅是一种示意，本申请实施例对数据子载波的离散分布不作限制。
从图5和图6可以看出，由于离散RU上的数据子载波离散分布，每MHz上子载波的数目减少。从子载波的角度而言，相当于扩宽了每个子载波对应的带宽，所以每个子载波可具有更大的发送功率。然而，采用如图5图6的方式，需要定义更多的离散RU或离散RU组合，例如各种离散的子载波形成的RU或RU组合。且为了指示更多类型的离散RU或离散MRU(包括各种离散的子载波形成的RU或RU组合)，需要改变现有的连续的子载波形成的连续RU的分配方法，对于发送端而言实现较为复杂。另外，在可能的情况中，例如预先定义的某些离散子载波集合可能有交集，那么分配了某个离散的RU(例如x-tone-RU)，另一个离散的RU(例如，y-tone-RU)不能用来发送；又例如，如果出现前导码打孔，那么预先定义的RU将不能使用，RU的利用率较低。
本申请提供了一种资源指示方法，该方法实质上是提供一种VRU到PRU的映射关系，该映射关系可将连续VRU映射为离散PRU。基于该映射关系，发送端可告知接收端为接收端分配的RU是连续VRU，但是发送端在连续VRU映射后的离散PRU上发送数据。由于连续VRU映射为离散PRU，相当于降低了每MHz上的子载波数，所以发送端可支持更大的发送功率。
需要说明的是，在本申请实施例中，需要离散的子载波可以包括用于承载数据的子载波(在本文中也称为数据子载波)和用于承载导频的子载波(在本文中也称为导频子载波)，也可以只包括用于承载数据的子载波，本申请不予限制。
下面结合附图介绍本申请实施例提供的技术方案。在下文的描述中，以发送端是第一通信装置，接收端是第二通信装置为例说明第一通信装置如何向第二通信装置指示分配的资源。其中，第一通信装置可以是AP，第二通信装置可以是STA或AP；或者，第一通信装置可以是STA，第二通信装置也可以是STA或AP。为便于描述，在下文中，以第一通信装置是AP，第二通信装置是STA为例。参阅图7，为本申请实施例提供的资源指示方法的示例性流程图，该流程描述如下。
S701：AP向STA发送资源指示信息，相应的，STA接收来自AP的资源指示信息。
其中，资源指示信息可以包括用于指示一个或多个第一VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息。上述第一VRU可以包括多个在频域上连续的子载波，也就是说第一VRU可以是连续RU，关于连续RU的定义可以参考上文，在此不再赘述。
应理解，AP可为一个STA分配VRU，也可以同时为多个STA分配VRU，例如AP为STA1分配第一VRU，为STA2分配第二VRU。
S702：STA根据资源指示信息确定第一PRU，其中，第一VRU和第一PRU之间存在映射关系。
示例性的，ST A在向AP发送数据之前，可以根据第一VRU和第一PRU的映射关系，将第一VRU映射至第一PRU，从而在第一PRU上发送数据。
S703：STA在第一PRU上传输数据，相应的，AP在第一PRU上接收该数据。
本申请实施例提供的VRU映射到PRU的方案可适用于上行传输(即STA到AP的传输)，也就是STA可以在第一PRU上向AP传输数据，也可以适用于下行传输(即AP到STA的传输)，也就是，AP也可以在第一PRU上向STA传输数据。
基于上述方案，AP为STA分配的资源是连续RU(即第一VRU)，为了使得STA获得更大的发送功率，本申请可将连续RU映射为离散RU(即第一PRU)，STA在离散RU上向AP发送数据，可使得STA获得更大的发送功率。应理解，STA在离散RU向AP发送数据，AP在该离散RU上接收来自STA的数据，也可以在该离散RU上向STA发送数据。即STA不是在AP为其分配的连续RU上收发数据，可认为AP为STA分配的连续RU为VRU，离散RU为PRU。将VRU映射到PRU，使离散后的RU子载波分布在更大的带宽上，从而使得发射端能以更大的发射功率发射。这样发送端可以采用已有的资源单元分配方式，也就是分配连续RU的资源单元分配方式，无需重新定义多种分布式RU，也无需关心如何选取与分配分布式RU，就可以实现增大设备的最大发送功率的目的，并且可以兼容已有的WiFi协议以及降低资源分配的复杂度。
此外，采用本申请实施例提供的方法得到多个子载波离散后的离散RU(第一PRU)，该多个离散的子载波可能占邻近频带，因此可以用这多个子载波信道估计的平均值，来作为信道估计的值，可以使估计结果更准确。这种估计信道的方法称为信道平滑(channel smoothing)。
在本申请实施例中，AP可沿用目前的连续RU分配方式，即采用资源单元分配子字段(RU Allocation subfield)来分配资源。通常AP通过资源单元分配子字段为STA分配资源，STA会认为所分配的资源是物理资源。例如AP向STA发送资源分配信息，该资源分配信息承载于资源单元分配子字段，用于指示AP为STA分配的RU。但是在本申请实施例中，通过资源单元分配子字段为STA分配的资源不是AP发送数据实际使用的资源，所以AP为STA分配资源，会告知STA，AP为STA分配的资源是VRU。例如，AP可向STA发送资源分配信息，该资源分配信息用于指示AP为STA分配的RU是第一VRU。示例性的，资源分配信息可以承载于资源分配子字段，或者，资源分配信息也可以承载于物理层协议数据单元(physical protocol data unit，PPDU)包括的信令字段(signal field，SIG)，例如通用字段(universal SIG，U-SIG)或者超高吞吐率信令字段(extremely high throughput signal field，EHT-SIG)中。
本申请实施例将VRU映射为PRU的目的在于使得子载波更加离散，而VRU和PRU 在频带上的位置都可以通过子载波序号或者RU序号来确定，具体参阅后续的表2-表6。因此，本申请实施例可对第一VRU或者第一VRU包含的子载波进行映射，即将第一VRU的序号映射为第一PRU的序号，或者将第一VRU包含的子载波的子载波序号映射为第一PRU包含的子载波的子载波序号。
表2：20MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 20MHz EHT PPDU
Figure PCTCN2022095006-appb-000005
表3：40MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 40MHz EHT PPDU
Figure PCTCN2022095006-appb-000006
Figure PCTCN2022095006-appb-000007
表4：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000008
表5：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000009
Figure PCTCN2022095006-appb-000010
表6：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000011
Figure PCTCN2022095006-appb-000012
其中：
Figure PCTCN2022095006-appb-000013
Figure PCTCN2022095006-appb-000014
Figure PCTCN2022095006-appb-000015
Figure PCTCN2022095006-appb-000016
Figure PCTCN2022095006-appb-000017
如上表2-表6所示，目前对连续RU的划分以及相应RU对应的子载波序号或子载波索引已经规定好，AP通过给STA发送资源单元指示信息，STA就可以知道具体在哪个RU上向AP传输资源。需要说明的是，在本申请实施例中，各个子载波的序号可以沿用该子载波在对应的实际频带中的子载波编号(如上表规定的子载波编号)，也可以自定义。本申请实施例对子载波的序号的具体实现形式不作限制。
一种可能的实现方式中，子载波的序号可以为该子载波在对应的实际频带中的子载波 编号。例如80MHz的第一个20MHz对应的242个子载波的序号依次为-500到-259；第二个20MHz对应242个子载波的序号为-253到-12；第三个20MHz对应的242个子载波的序号为12到253，第四个20MHz对应的242个子载波的序号依次为259到500。
又一种可能的实现方式中，子载波的序号也可以不按照已有子载波编号(实际频带中的子载波编号)，而是进行重新编号，例如从0或1开始编号。例如80MHz的第一个20MHz对应的242个子载波的序号为0到241，或者1到242。也就是说，在本申请实施例中，参与映射的子载波的序号可以按照在频带中从低到高的顺序连续编号。例如，20MHz的第一个26-tone-RU的26个子载波全部参与映射，则编号可以为0到25。需要说明的是，参与映射的子载波的序号也可以不按照在频带中从低到高的顺序连续编号，本申请不予限定。
另外，需要统一说明的是，在本申请实施例中，996-tone-RU、484-tone-RU、242-tone-RU、106-tone-RU和52-tone-RU可以看作是由多个26-tone-RU组成的。例如，参考图3，52-tone-RU可以看作是由两个26-tone-RU组成的，106-tone-RU可以看作是由4个26-tone-RU组成的，以下不再赘述。其中，106-tone-RU、242-tone-RU和996-tone-RU中还包含有除26-tone-RU中的子载波以外的子载波，具体可以参考前述表2-表6。
应理解，242-tone-RU可以看作是由9个26-tone-RU组成的，等效资源分配带宽是20MHz，484-tone-RU可以看作是由18个26-tone-RU组成的，等效资源分配带宽是40MHz，996-tone-RU可以看作是由36个26-tone-RU组成的，等效资源分配带宽是80MHz。而2*996-tone-RU、3*996-tone-RU等则可以看作是由多个996-tone-RU组成的，等效资源分配带宽分别为160MHz、320M。例如，2*996-tone-RU可以看作是由两个996-tone-RU组成的，也就是由2*36个26-tone-RU组成的，3*996-tone-RU可以看作是由3个996-tone-RU组成的，也就是由3*36个26-tone-RU组成的。其中，这里所说的资源分配带宽是指发送端所能分配给接收端的最大带宽，以242-tone-RU为例，可以认为是AP分配给一个或多个STA的最大带宽是242-tone-RU(20M),每个STA根据指示在相应大小和位置的RU上传输数据。
下面介绍VRU和PRU的几种可能的映射关系。
映射关系一：本申请实施例可以通过将VRU进行置换，来实现将第一VRU映射为第一PRU。
在一个示例中，置换是以K-tone-RU为最小单位进行的。通过置换可以调整VRU里K-tone-RU的相对位置，可以实现将频带上相邻的K-tone-RU分散到频带距离更远的位置，得到置换后的PRU中RU可以分布在更大的带宽上。参阅图8，RU2和RU4置换后，RU1和RU2在频带上距离较远。假设AP为STA1分配的第一VRU包括RU1和RU2，则置换后的第一PRU包含的RU2实际上在频域上位于索引为RU4的位置，也就是第一PRU中的RU分布在更大的带宽上。
应理解，由于置换是以K-tone-RU为最小单位进行，对于K-tone-RU内的子载波相对位置不进行改变。也就是说，在以26-tone-RU为最小单位进行时，置换后26-tone-RU内的26个子载波的相对位置与置换前26-tone-RU内的26个子载波的相对位置相同。
其中，上述K可以是26或者52，也就是说置换可以以26-tone-RU为最小单位进行，或者置换也可以以52-tone-RU为最小单位进行。
以下，以26-tone-RU为最小单位为例，分别介绍两种不同的置换方式。
置换方式一，在242-tone-RU内进行两两置换。
可以理解的是，这里所说的242-tone-RU可以看作包含如图2所示的第一行的9个26-tone-RU，也可以等效为资源传输带宽为20M。其中，在242-tone-RU内进行26-tone-RU的两两置换时，可以不考虑每个242-tone-RU中频域上中间的26-tone-RU(也就是被7DC隔开的26-tone-RU)，对于242-tone-RU内剩下的8个26-tone-RU，每隔一个26-tone-RU，与对称位置的26-tone-RU进行置换。
参阅图9A，为本申请实施例中置换方式一的示意图。其中，242-tone-RU中包含9个26-tone-RU，上述9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q。其中，可以不考虑频域上位于中间的索引为5的RU，将对称位置上的索引为2的RU和索引为7的RU进行置换，索引为4的RU和索引为9的RU进行置换。也就是置换后得到的PRU包含的RU的索引分别为{1，7，3，9，5，6，2，8，4}+q。其中，q是一个整数，q＝9*b，b为整数，b表示AP分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…。
其中，AP分配的一个第一VRU可以是上述置换前的9个26-tone-RU中的一个或多个，例如，AP分配的一个第一VRU为52-tone-RU，那么可以将AP分配的一个第一VRU看作是由两个26-tone-RU组成的。与第一VRU相对应的第一PRU则可以是由对应第一VRU的置换后的9个26-tone-RU中的一个或多个。示例性的，假设AP为STA1分配的第一VRU中包括如图9A所示的置换前的1和2的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到置换后的第一PRU。实际上，第一PRU中包括的RU在频域上分别是索引为1和索引为7的RU。
需要说明的是，RU中包含的导频子载波可以参与置换，也可以不参与置换。假设导频子载波不参与置换，那么导频子载波所占的频域在置换前后是不变的。假设每个26-tone-RU中包含两个导频子载波，AP为STA1分配的第一VRU中包括如图9A所示的置换前的1和2的26-tone-RU。那么，得到的PRU实际上包括的RU在频域上分别是索引为1和索引为7的RU。由于导频子载波不参与置换，那么索引为2的RU中包含的导频子载波在置换后频域上不发生变化，仍位于未置换前索引为2的RU所在频域上，而其余的24个子载波在置换后频域上实际为置换前索引为7的RU的频域。或者也可以重新分配每个PRU上的导频子载波，本申请不做具体限定。
应理解，对于40MHz、80MHz、160MHz以及320MHz带宽下，可以将带宽看成由多个242-tone-RU组成，在每个242-tone-RU内部进行两两置换。例如，针对40MHz，可以将其分为两个242-tone-RU，并分别针对每个242-tone-RU进行如图9A所示的置换。
示例性的，假设AP为STA分配的第一VRU包括如表2所示的26-tone-RU中的RU1和RU2，其子载波索引包括[–121:–96]和[–95:–70]。那么STA可以根据如图9A所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表2所示的26-tone-RU中的RU1和RU7，子载波索引包括[–121:–96]和[43:68]。
由于VRU和PRU在频带上的位置都可以通过子载波序号或者RU序号来确定，因此基于如图9A所示的置换方式，20MHz带宽下，VRU与PRU的映射关系，可以通过表2和表7的关系指示。例如，STA根据AP指示的第一VRU，查找表7，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含20MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表7，确定第一PRU子载波索引包括[–121:–96]和[43:68]，并在这些PRU子载波上发送数据。又例如，AP指示的第一VRU包含20MHz的26-tone-RU中的RU3和RU4，那么STA可以查找表7，确定第一PRU子载波索引包括 [–68:–43]和[96:121]，并在这些PRU子载波上发送数据。
表7:20MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 20MHz EHT PPDU
Figure PCTCN2022095006-appb-000018
需要说明的是，上述表7中106-tone-RU和242-tone-RU(这里的242-tone-RU是指STA接收到AP分配的RU大小为242-tone-RU)中索引为-122和索引为122的子载波不参与置换，因此上述两个子载波的频域位置在置换前后不发生变化。
应理解，表3-表6所示出的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据上述如图9A所示的置换方式确定，具体可以参见上述20MHz带宽下各个RU的数据和导频子载波索引在映射后的索引表的确定方式，也就是表7的确定方式。例如，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU1和RU7，也就是第一PRU包含的子载波索引包括[–243:–218]和[–83:–58]。同样的，如果导频子载波不参与置换，那么置换前后导频子载波的索引不发生变化，此处不再赘述。
以下，示出表3-表6所对应的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表。
表8：40MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 40MHz EHT PPDU
Figure PCTCN2022095006-appb-000019
Figure PCTCN2022095006-appb-000020
需要说明的是，上述表8中索引为-244,244,3和-3的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表9：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000021
Figure PCTCN2022095006-appb-000022
需要说明的是，上述表9中，索引为-500，-259，-256，-12，12，253，259和500的子载波不参与映射，因此上述子载波在置换前后频域不发生变化。
表10：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000023
Figure PCTCN2022095006-appb-000024
Figure PCTCN2022095006-appb-000025
Figure PCTCN2022095006-appb-000026
需要说明的是，上述表10中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，600，524，765，771，1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表11：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000027
Figure PCTCN2022095006-appb-000028
其中：
Figure PCTCN2022095006-appb-000029
Figure PCTCN2022095006-appb-000030
Figure PCTCN2022095006-appb-000031
Figure PCTCN2022095006-appb-000032
Figure PCTCN2022095006-appb-000033
Figure PCTCN2022095006-appb-000034
Figure PCTCN2022095006-appb-000035
Figure PCTCN2022095006-appb-000036
需要说明的是，上述表11中索引为-2036，-1795，-1789，-1548，-1524，-1283，-1277，-1036，-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771，1012，1036，1277，1283，1524，1548，1789，1795和2036的子载波不参与置换，因此置换前后上述子载波的频域位置未发生变化。
参阅图9B，为本申请实施例中置换方式一的另一示意图。其中，242-tone-RU中包含9个26-tone-RU，索引分别为{1，2，3，4，5，6，7，8，9}。其中，可以不考虑频域上位于中间的索引为5的RU，将对称位置上的索引为1的RU和索引为6的RU进行置换，索引为3的RU和索引为8的RU进行置换。也就是置换后得到的PRU包含的RU的索引为{6，2，8，4，5，1，7，3，9}。
假设AP为STA1分配的第一VRU中包括如图9A所示的置换前的1和2的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到离散的第一PRU。实际上，第一PRU中包括的RU在频域上分别位于置换前索引为6和索引为2的RU上。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，对于40MHz、80MHz、160MHz和320MHz等，可以将带宽看作多个242-tone-RU，在每个242-tone-RU内部进行两两置换。例如，针对40MHz，可以将其分为两个242-tone-RU，并分别针对每个242-tone-RU进行如图9B所示的置换。
示例性的，假设AP为STA分配的第一VRU包括如表2所示的26-tone-RU中的RU1和RU2，那么STA可以根据上述如图9B所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是PRU包含了如表2所示的26-tone-RU中的RU6和RU2，子载波索引包括[17:42]和[–95:–70]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于上述如图 9B所示的置换方式，20MHz带宽下，VRU与PRU的映射关系，可以通过表2和表12的关系指示。例如，STA根据AP指示的第一VRU，查找表12，可以确定第一PRU包含的RU以及子载波索引。
示例性的，假设AP指示的第一VRU包含20MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表12，确定第一PRU子载波索引包括[17:42]和[–95:–70]，并在第一PRU子载波上发送数据。又例如，AP指示的第一VRU包含20MH的26-tone-RU中的RU3和RU4，那么STA可以查找表12，确定PRU子载波索引包括[70:95]和[–42:–17]，并在第一PRU子载波上发送数据。
表12:20MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 20MHz EHT PPDU
Figure PCTCN2022095006-appb-000037
需要说明的是，上述表12中索引为122和-122的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
应理解，表3-表6所示出的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据图9B示出的映射关系确定，具体可以参见上述20MHz带宽下各个RU的数据和导频子载波索引在映射后的索引表的确定方式，也就是表12的确定方式。例如，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU6和RU2，也就是第一PRU包含的子载波索引包括[–109:–84]和[–217:–192]。
以下，示出表3-表6所对应的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表。
表13：40MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 40MHz EHT PPDU
Figure PCTCN2022095006-appb-000038
Figure PCTCN2022095006-appb-000039
需要说明的是，上述表13中索引为-244，244，-3和3的子载波不参与置换，因此置换前后上述子载波的频域位置不发生变化。
表14：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000040
Figure PCTCN2022095006-appb-000041
需要说明的是，上述表14中索引为-500，-259，-253，-12，12，253，259和500的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
表15：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000042
Figure PCTCN2022095006-appb-000043
Figure PCTCN2022095006-appb-000044
需要说明的是，上述表15中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771和1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表16：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000045
Figure PCTCN2022095006-appb-000046
其中：
Figure PCTCN2022095006-appb-000047
Figure PCTCN2022095006-appb-000048
Figure PCTCN2022095006-appb-000049
Figure PCTCN2022095006-appb-000050
Figure PCTCN2022095006-appb-000051
Figure PCTCN2022095006-appb-000052
Figure PCTCN2022095006-appb-000053
Figure PCTCN2022095006-appb-000054
需要说明的是，上述表15中索引为-2036，-1795，-1789，-1548，-1524，-1283，-1277，-1036，-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771，1012，1036，1277，1283，1524，1548，1789，1795和2036的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
可以理解的是，图9A和图9B示出的置换方式可以看作是每个242-tone-RU中包含的9个26-tone-RU进行位置上的互换，这里所说的互换也可以理解为子载波位置发生变化，例如置换前RU1和RU2在置换后对应为置换前RU1和RU7的位置。其中，图9A可以认为是除中间26-tone-RU外偶数位置上的RU以中间26-tone-RU为界在中间26-tone-RU的左右两侧进行互换，图9B可以认为是除中间26-tone-RU外奇数位置上的RU以中间26-tone-RU为界在中间26-tone-RU的左右两侧进行互换。
上述图9A和图9B是以26-tone-RU为置换的最小单位为例进行说明的。在一些示例中，置换可以以52-tone-RU为最小单位进行。
参阅图10A，为本申请实施例中置换方式一的又一示意图。其中，242-tone-RU中9包含个26-tone-RU，索引分别为{1，2，3，4，5，6，7，8，9}。其中，可以不考虑频域上位于中间的索引为5的RU，将对称位置上的索引为3和4的RU的RU与对称位置上的索引为8和9的RU进行置换。也就是置换后得到的PRU包含的RU索引为{1，2，8，9，5，6，7，3，4}。
假设AP为STA1分配的第一VRU中包括如图10A所示的置换前的1至4的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到置换后的第一PRU。实际上，第一PRU中包括的RU在频域上分别是索引为1、2、8和9的RU。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，对于40MHz、80MHz、160MHz和320MHz带宽，可以将带宽看作多个242-tone-RU，在每个242-tone-RU内部进行置换。例如，针对40MHz，可以将其分为两个242-tone-RU，并分别针对每个242-tone-RU进行如图10A所示的置换。
假设AP为STA分配的第一VRU包括如表2所示的26-tone-RU中的RU1至RU4，其子载波索引包括[–121:–96]、[–95:–70]、[–68:–43]和[–42:–17]。那么STA可以根据上述如图10A所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表2所示的26-tone-RU中的RU1、RU2和RU8以及RU9，子载波索引包括[–121:–96]、[–95:–70]、[70:95]和[96:121]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于上述图9B示出的置换方式，20MHz带宽下，VRU与PRU的映射关系，可以通过表2和表17的关系指示。例如，STA根据AP指示的第一VRU，查找表17，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含20MHz的26-tone-RU中的RU2和RU3，那么STA可以查找表9，确定第一PRU子载波索引包括[–95:–70]和[70:95]，并在第一PRU子载波上发送数据。
表17:20MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 20MHz EHT PPDU
Figure PCTCN2022095006-appb-000055
需要说明的是，上述表17中索引为-122和122的子载波不参与置换，因此置换前后子载波的频域不发生变化。
应理解，表3-表6所示出的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据图10A示出的映射关系确定，具体可以参见上述20MHz下各个RU(第一VRU)的数据和导频子载波索引在映射后的索引表的确定方式，也就是表17的确定方式，以下不再单独示出。例如，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU2和RU3，那么STA可以确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU2和RU8，也就是第一PRU包含的子载波索引包括[–217:–192]和[–55:–30]。
参阅图10B，为本申请实施例中置换方式一的另一示意图。其中，242-tone-RU中包含9个26-tone-RU，索引分别为{1，2，3，4，5，6，7，8，9}。其中，可以不考虑频域上位 于中间的索引为5的RU，将对称位置上的索引为1和2的RU和索引为6和7的RU进行置换。也就是置换后得到的PRU包含的RU的索引为{6，7，3，4，5，1，2，8，9}。
假设AP为STA1分配的第一VRU中包括如图10A所示的置换前的1至4的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到离散的PRU。实际上，PRU中包括的RU在频域上分别是索引为6、7、3和4的RU。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，对于40MHz、80MHz、160MHz和320MHz等带宽，可以将带宽看成多个242-tone-RU组成，在每个242-tone-RU内部进行两两置换。例如，针对40MHz，可以将其分为两个242-tone-RU，并分别针对每个242-tone-RU进行如图10B所示的置换。
假设AP为STA分配的第一VRU包括如表2所示的26-tone-RU中的RU2和RU3，其子载波索引包括[–95:–70]和[–68:–43]。那么STA可以根据上述图10B示出的置换方式，将AP分配的第一VRU映射为第一PRU，也就是PRU包含了如表2所示的26-tone-RU中的RU7和RU3，子载波索引包括[43:68]和[–68:–43]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于上述置换方式一，20MHz带宽下，VRU与PRU的映射关系，可以通过表2和表18的关系指示。例如，STA根据AP指示的第一VRU，查找表18，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一RU包含20MHz的26-tone-RU中的RU1和RU4，那么STA可以查找表18，确定第一PRU子载波索引包括[17:42]和[–42:–17]，并在第一PRU子载波上发送数据。又例如，AP指示的第一VRU包含20MHz的26-tone-RU中的RU6和RU8，那么STA可以查找表18，确定第一PRU子载波索引包括[–121:–96]和[70:95]，并在第一PRU子载波上发送数据。
表18:20MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 20MHz EHT PPDU
Figure PCTCN2022095006-appb-000056
需要说明的是，上述表18中索引为-122和122的子载波不参与置换，因此置换前后 子载波索引不发生变化。
应理解，表3-表6所示出的40MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，具体可以参见上述20MHz下各个RU的数据和导频子载波索引在映射后的索引表的确定方式，也就是表18的确定方式，也可以根据图10B示出的映射关系确定，以下不再单独示出。例如，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU2和RU3，那么STA可以确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU7和RU3，也就是第一PRU包含的子载波索引包括[–83:–58]和[–189:–164]。
可以理解的是，上述图10A和图10B中以52-tone-RU为粒度进行置换，也可以看作是以52-tone-RU包含的2个26-tone-RU为一组进行置换，例如图10A是以中间26-tone-RU为界限，在26-tone-RU两侧对称置换偶数组包含的2个26-tone-RU，图10B是在26-tone-RU两侧对称置换奇数组包含的2个26-tone-RU。偶数组和奇数组可以认为是，例如242-tone-RU包含的9个26-tone-RU从1到9进行编号，除中间编号为5的26-tone-RU外，对其他RU顺序上两个一组，例如RU1,RU2为1组，组编号为1，RU3，RU4为1组，组编号为2，RU6，RU7为1组，组编号为3，RU8，RU9为1组，组编号为4，其中组编号为偶数的称为偶数组，组编号为奇数的称为奇数组。
在一些示例中，本申请实施例还提供另一种以52-tone-RU为最小单位进行置换的方法。242-tone-RU中包含4个52-tone-RU，索引分别为{1，2，3，4}。其中，可以将对称位置上的索引为1的RU与对称位置上的索引为3的RU进行置换。也就是置换后得到的PRU包含的RU索引为{3，2，1，4}。也就是说，这里的52-tone-RU不再看作是由2个26-tone-RU组成，而是将52-tone-RU看作一个整体。
同样的，在其他带宽下，例如40M，80M，160M，320M或更大带宽下，同样可以采用上述以26-tone-RU为最小单位进行置换的方法，也可以根据具体带宽以更大RU(例如52-tone-RU、106-tone-RU等)为单位(这里不再将更大RU看作由26-tone-RU组成，而是作为一个整体)进行置换，具体可参考前述实施例，不再赘述。
例如，假设AP指示的第一VRU包含20MHz的52-tone-RU中的RU1和RU2，那么STA可以根据上述置换关系以及表2，确定第一PRU载波索引包括[–121:–70]和[70:121]，并在第一PRU子载波上发送数据。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
需要说明的是，上述置换方式一以242-tone-RU为粒度来说明在242-tone-RU内部进行的置换过程，对于包含多个242-tone-RU的资源分配带宽，例如40M、80M、160M、320M及更大带宽，在每个242-tone-RU内均可按照置换方式一来实现。
通过上述置换方式一，可以将242-tone-RU看作包含多个26-tone-RU在频域上进行离散，可以使得STA在离散的第一PRU上发送数据，获得更大的发送功率。上述置换方式一可以适用于20MHz、40MHz、80MHz、160MHz和320MHz，以及更大的带宽中。
需要说明的是，上述置换方式一主要以中间26-tone-RU为界限，在中间26-tone-RU左右两侧以对称置换的方式进行离散，使得子载波分散的更加均匀。在实际应用时，可以不局限于对称的方式，采用非对称的方式进行离散，本申请不予限定。
进一步的，在40MHz、80MHz、160MHz和320MHz等大带宽中包含的26-tone-RU较多，因此，可以采用以下置换方式二，使得242-tone-RU内包含的多个26-tone-RU在频 域上更加离散。需要说明的是，在40MHz、80MHz、160MHz和320MHz等大带宽中仍可采用前述置换方式一，以26-tone-RU为粒度的置换。
置换方式二，在242-tone-RU和242-tone-RU之间进行两两置换。
其中，AP分配的最大资源带宽大于或等于40MHz，最大资源带宽中包括至少两个242-tone-RU。置换方式二是在上述最大资源带宽中包括的至少两个242-tone-RU之间进行置换。
需要说明的是，AP分配的最大资源带宽大于或等于资源指示信息中为一个或多个STA分配的一个或多个第一VRU组成的带宽。举例来说，AP分配的最大带宽为40MHz时，AP可以将如图3示出的40MHz中包含的RU分配给一个或多个STA。AP为一个或多个STA分配的第一VRU组成的带宽小于或等于40MHz。
应理解，242-tone-RU和242-tone-RU之间的置换，可以是频域上相邻的两个242-tone-RU之间进行置换。例如，第一个242-tone-RU和第二个242-tone-RU之间进行置换。或者也可以是频域上不连续的两个242-tone-RU之间进行置换。例如，第一个242-tone-RU和第三个242-tone-RU之间进行置换，或者第一个242-tone-RU和第四个242-tone-RU之间进行置换。示例性的，假设在第一个242-tone-RU和第三个242-tone-RU之间进行两两置换，那么在频域上位于第一242-tone-RU中的一个26-toneR-RU，在置换后实际上频域位置位于在第三个242-tone-RU中的一个26-tone-RU上，相较于置换方式一，使得一个26-tone-RU在置换前后频域上间隔较远，因此可以使得映射得到的PRU更加离散。
其中，在242-tone-RU和242-tone-RU之间进行两两置换时，不考虑每个242-tone-RU中频域上中间的26-tone-RU，对一个242-tone-RU内剩下的8个26-tone-RU，每隔一个26-tone-RU，与另一个242-tone-RU中相同位置的26-tone-RU进行置换。
参阅图11A，为本申请实施例中置换方式二的示意图。左边242-tone-RU中包含9个26-tone-RU，索引为{1，2，3，4，5，6，7，8，9}，右边242-tone-RU包含9个26-tone-RU，上述9个262-tone-RU的索引分别为{10，11，12，13，14，15，16，17，18}+m。其中，m为整数，m＝9*a，a为整数，a可以理解为两个242-tone-RU之间间隔的242-tone-RU个数。示例性的，m＝0,9,18,27,…。
参阅图11B，如果左边242-tone-RU和右边242-tone-RU在频域上相邻，那么m＝0。
参阅图11C，如果左边242-tone-RU和右边242-tone-RU之间间隔一个242-tone-RU，那么m＝9；如果左边242-tone-RU和右边242-tone-RU之间间隔两个242-tone-RU，那么m＝18，以此类推。其中，在置换时可以不考虑两个242-tone-RU中频域上位于中间的索引为5和14+m的26-tone-RU，将两个242-tone-RU中相同位置上的26-tone-RU进行置换。例如，将左边索引为2的RU与右边索引为11+m的RU进行置换，将左边索引为4的RU与右边索引为13+m的RU进行置换，将左边索引为7的RU与右边索引为16+m的RU进行置换，将左边索引为9的RU与右边索引为18+m的RU进行置换。也就是置换后得到的PRU的索引为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}。
其中，AP分配的一个第一VRU可以是上述置换前的18个26-tone-RU中的一个或多个，例如，AP分配的一个第一VRU为106-tone-RU，那么可以将AP分配的一个第一VRU看作包含四个26-tone-RU。与第一VRU相对应的第一PRU则可以是由对应第一VRU的 置换后的18个26-tone-RU中的一个或多个。示例性的，假设AP为STA1分配的第一VRU中包括如图11A所示的置换前的1和2的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到置换后的PRU。实际上，PRU中包含的RU在频域上分别是索引为1和索引为11+m的RU。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，置换方式二适用于40MHz、80MHz、160MHz和320MHz以及更大的带宽。针对40MHz带宽，40MHz带宽中包含两个242-tone-RU，因此在执行上述置换方式二时可以在相邻的两个242-tone-RU执行如图11A所示的置换操作。针对80MHz带宽，80MHz带宽中包含4个242-tone-RU，因此在执行上述置换方式二时，可以在相邻的两个242-tone-RU执行如图11A所示的置换操作。例如，可以在第一个242-tone-RU和第二个242-tone-RU之间执行如图11A所示的置换操作，或者在第三个242-tone-RU和第四个242-tone-RU之间执行如图11A所示的置换操作。或者，也可以在不相邻的两个242-tone-RU执行如图11A所示的置换操作。例如，可以在第一个242-tone-RU和第三个242-tone-RU之间执行如图11A所示的置换操作，或者第二个和第四个242-tone-RU之间执行如图11A所示的置换操作。或者，可以在第一个242-tone-RU和第四个242-tone-RU之间执行如图11A所示的置换操作。
以下，以在相邻的两个242-tone-RU执行如图11A所示的置换操作为例进行说明。假设AP为STA分配的第一VRU包括表3所示的26-tone-RU中的RU1和RU2，那么STA可以根据如图11A所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表2所示的26-tone-RU中的RU1和RU11，子载波索引包括[–243:–218]和[30:55]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于如图11A所示的置换方式，20MHz带宽下，VRU与PRU的映射关系，可以通过表3和表18指示。例如，STA根据AP指示的第一VRU查找表19，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表19，确定第一PRU子载波索引包括[–243:–218]和[30:55]，并在第一PRU子载波上发送数据。
表19：40MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 40MHz EHT PPDU
Figure PCTCN2022095006-appb-000057
Figure PCTCN2022095006-appb-000058
需要说明的是，上述表19中索引为-244，-3，3和244的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
应理解，表4-表6所示出的80MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据上述如图11A所示的置换方式确定，具体可以参见上述20MHz下各个RU的数据和导频子载波索引在映射后的索引表的确定方式，也就是表19的确定方式。例如，假设AP指示的第一VRU包含80MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表4示出的26-tone-RU中的RU1和RU11，子载波索引包括[–499:–474]和[–226:–201]。
以下，示出表4-表6所对应的80MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表。
表20：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000059
Figure PCTCN2022095006-appb-000060
需要说明的是，上述表20中索引为-500，-259，-253，-12，12，253，259和500的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
表21：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000061
Figure PCTCN2022095006-appb-000062
Figure PCTCN2022095006-appb-000063
需要说明的是，上述表21中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771和1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表22：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000064
Figure PCTCN2022095006-appb-000065
其中：
Figure PCTCN2022095006-appb-000066
Figure PCTCN2022095006-appb-000067
Figure PCTCN2022095006-appb-000068
Figure PCTCN2022095006-appb-000069
Figure PCTCN2022095006-appb-000070
Figure PCTCN2022095006-appb-000071
Figure PCTCN2022095006-appb-000072
需要说明的是，上述表22中索引为-2036，-1795，-1789，-1548，-1524，-1283，-1277，-1036，-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771，1012，1036，1277，1283，1524，1548，1789，1795和2036的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
以下，以在间隔的两个242-tone-RU之间执行如图11A所示的置换操作为例进行说明。假设在第一个242-tone-RU和第三个242-tone-RU之间执行如图11A所示的置换操作。假设AP为STA分配的第一VRU包括表4所示的26-tone-RU中的RU1和RU2，那么STA可以根据如图11A所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表5所示的26-tone-RU中的RU1和RU21，子载波索引包括[–499:–474]和[39:64]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于如图11A所示的置换方式，80MHz带宽下，VRU与PRU的映射关系，可以通过表5和表23指示。例如，STA根据AP指示的第一VRU查找表23，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含80MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表23，确定第一PRU子载波索引包括[–499:–474]和[39:64]，并在第一PRU子载波上发送。又例如，AP指示的第一VRU包含80MHz的26-tone-RU中的RU3和RU4，那么STA可以查找表23，确定第一PRU子载波索引包括[–445:–420]和[93:118]，并在第一PRU子载波上发送。
表23：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000073
Figure PCTCN2022095006-appb-000074
需要说明的是，上述表23中，索引为-500，-259，-256，-12，12，253，259和500的子载波不参与映射，因此上述子载波在置换前后索引不发生变化。
应理解，表5-表6所示出的160MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据上述如图11A所示的置换方式确定，具体可以参见上述20MHz下各个RU(第一VRU)的数据和导频子载波索引在映射后的索引表的确定方式，也就是表23的确定方式。例如，假设AP指示的第一VRU包含160MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表5示出的26-tone-RU中的RU1和RU21，也就是第一PRU包含的子载波索引包括[–1011:–986]和[–473:–448]。同样的，如果导频子载波不参与置换，那么置换前后导频子载波的索引不发生变化，此处不再赘述。
以下，示出表5-表6所对应的160Hz至320MHz的各个RU(第一VRU)的数据和导频子载波索引在映射后的索引表。
表24：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000075
Figure PCTCN2022095006-appb-000076
Figure PCTCN2022095006-appb-000077
需要说明的是，上述表24中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，600，524，765，771，1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表25：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000078
Figure PCTCN2022095006-appb-000079
其中：
Figure PCTCN2022095006-appb-000080
Figure PCTCN2022095006-appb-000081
Figure PCTCN2022095006-appb-000082
Figure PCTCN2022095006-appb-000083
Figure PCTCN2022095006-appb-000084
Figure PCTCN2022095006-appb-000085
Figure PCTCN2022095006-appb-000086
需要说明的是，上述表25中索引为-2036，-1795，-1789，-1548，-1524，-1283，-1277，-1036，-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771，1012，1036，1277，1283，1524，1548，1789，1795和2036的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
参阅图11D，为本申请实施例中置换方式二的示意图。其中，左边242-tone-RU中包含9个26-tone-RU，索引分别为{1，2，3，4，5，6，7，8，9}，右边242-tone-RU包含9个26-tone-RU，索引分别为{10，11，12，13，14，15，16，17，18}+m。其中，m为整数，m＝9*a，a为整数，a可以理解为两个242-tone-RU之间间隔的242-tone-RU个数。示例性的，m＝0,9,18,27,…。
参阅图11E，如果左边242-tone-RU和右边242-tone-RU在频域上相邻，那么m＝0。
参阅图11F，如果左边242-tone-RU和右边242-tone-RU之间间隔一个242-tone-RU，那么m＝9；如果左边242-tone-RU和右边242-tone-RU之间间隔两个242-tone-RU，那么m＝18，以此类推。其中，在置换时可以不考虑两个242-tone-RU中频域上位于中间的索引为5和14+m的26-tone-RU，将两个242-tone-RU中相同位置上的26-tone-RU进行置换。例如，将左边索引为1的RU与右边索引为10+m的RU进行置换，将左边索引为3的RU与右边索引为12+m的RU进行置换，将左边索引为6的RU与右边索引为15+m的RU进行置换，将左边索引为8的RU与右边索引为17+m的RU进行置换。也就是置换后得到的PRU的索引分别为{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}。
假设AP为STA1分配的第一VRU中包括如图11D所示的置换前的1和2的26-tone-RU，那么STA1可以根据VRU和PRU的映射关系，得到置换后的PRU。实际上，PRU中包含的RU在频域上分别是索引为10+m和索引为2的RU。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换 后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，置换方式二适用于40MHz、80MHz、160MHz和320MHz以以及更大的带宽。针对40MHz带宽，40MHz带宽中包含两个242-tone-RU，因此在执行上述置换方式二时可以在相邻的两个242-tone-RU执行如图11D所示的置换操作。针对80MHz带宽，80MHz带宽中包含4个242-tone-RU，因此在执行上述置换方式二时，可以在相邻的两个242-tone-RU执行如图11D所示的置换操作。或者，也可以在不相邻的两个242-tone-RU执行如图11D所示的置换操作，此处不再赘述
以下，以在相邻的两个242-tone-RU执行如图11D所示的置换操作为例进行说明。假设AP为STA分配的第一VRU包括表5所示的26-tone-RU中的RU1和RU2，那么STA可以根据如图11D所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表3所示的26-tone-RU中的RU10和RU2，子载波索引包括[4:29]和[–217:–192]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于如图11D所示的置换方式，40MHz带宽下，VRU与PRU的映射关系，可以通过表3和表26指示。例如，STA根据AP指示的第一VRU查找表26，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表26，确定第一PRU子载波索引包括[4:29]和[–217:–192]，并在子载波上发送数据。
表26：40MHz的EHT PPDU的各个RU的数据和导频子载波索引映射表
Data and pilot subcarrier indices for RUs in an 40MHz EHT PPDU
Figure PCTCN2022095006-appb-000087
Figure PCTCN2022095006-appb-000088
需要说明的是，上述表26中242-tone-RU中索引为-244,244,3和-3的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
应理解，表4-表6所示出的80MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据上述如图11D所示的置换方式确定，具体可以参见上述20MHz下各个RU(第一VRU)的数据和导频子载波索引在映射后的索引表的确定方式，也就是表26的确定方式。例如，假设AP指示的第一VRU包含80MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表4示出的26-tone-RU中的RU10和RU2，子载波索引包括[–252:–227]和[–473:–448]。
以下，示出表4-表6所对应的80MHz至320MHz的各个RU的数据和导频子载波索引映射表。
表27：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000089
Figure PCTCN2022095006-appb-000090
需要说明的是，上述表27中索引为-500，-259，-253，-12，12，253，259和500的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
表28：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000091
Figure PCTCN2022095006-appb-000092
Figure PCTCN2022095006-appb-000093
Figure PCTCN2022095006-appb-000094
需要说明的是，上述表28中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771和1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表29：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000095
Figure PCTCN2022095006-appb-000096
其中：
Figure PCTCN2022095006-appb-000097
Figure PCTCN2022095006-appb-000098
Figure PCTCN2022095006-appb-000099
Figure PCTCN2022095006-appb-000100
Figure PCTCN2022095006-appb-000101
Figure PCTCN2022095006-appb-000102
Figure PCTCN2022095006-appb-000103
以下，以在间隔的两个242-tone-RU执行如图11D所示的置换操作为例进行说明。假设在第一个242-tone-RU和第三个242-tone-RU之间执行如图11D所示的置换操作。假设AP为STA分配的第一VRU包括表4所示的26-tone-RU中的RU1和RU2，那么STA可以根据如图11D所示的置换方式，将AP分配的第一VRU映射为第一PRU，也就是第一PRU包含了如表4所示的26-tone-RU中的RU20和RU2，子载波索引包括[13:38]和[–473:–448]。
由于VRU和PRU在频带上的位置都可以通过子载波序号来确定，因此基于如图11D所示的置换方式，80MHz带宽下，VRU与PRU的映射关系，可以通过表4和表30指示。例如，STA根据AP指示的第一VRU查找表30，可以确定第一PRU包含的RU以及子载波索引。示例性的，假设AP指示的第一VRU包含80MHz的26-tone-RU中的RU1和RU2，那么STA可以查找表30，确定第一PRU子载波索引包括[13:38]和[–473:–448]，并在第一PRU子载波上发送。又例如，AP指示的第一VRU包含80MHz的26-tone-RU中的RU3和RU4，那么STA可以查找表30，确定第一PRU子载波索引包括[67:92]和[–419:–394]，并在第一PRU子载波上发送。
表30：80MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 80MHz EHT PPDU
Figure PCTCN2022095006-appb-000104
Figure PCTCN2022095006-appb-000105
需要说明的是，上述表30中，索引为-500，-259，-256，-12，12，253，259和500的子载波不参与映射，因此上述子载波在置换前后索引不发生变化。
应理解，表5-表6所示出的160MHz至320MHz的各个RU的数据和导频子载波索引在映射后的索引表，也可以根据上述如图11D所示的置换方式确定，具体可以参见上述 20MHz下各个RU(第一VRU)的数据和导频子载波索引在映射后的索引表的确定方式，也就是表30的确定方式。例如，假设AP指示的第一VRU包含160MHz的26-tone-RU中的RU1和RU2，那么STA可以确定第一PRU包含的RU可以是如表5示出的26-tone-RU中的RU20和RU2，也就是第一PRU包含的子载波索引包括[–499:–474]和[–985:–960]。同样的，如果导频子载波不参与置换，那么置换前后导频子载波的索引不发生变化，此处不再赘述。
以下，示出表5-表6所对应的160MHz至320MHz的各个RU的数据和导频子载波索引表的映射关系。
表31：160MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 160MHz EHT PPDU
Figure PCTCN2022095006-appb-000106
Figure PCTCN2022095006-appb-000107
Figure PCTCN2022095006-appb-000108
需要说明的是，上述表31中索引为-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771和1012的子载波不参与置换，因此置换前后上述子载波的频域不发生变化。
表32：320MHz的EHT PPDU的各个RU的数据和导频子载波索引表
Data and pilot subcarrier indices for RUs in an 320MHz EHT PPDU
Figure PCTCN2022095006-appb-000109
Figure PCTCN2022095006-appb-000110
其中：
Figure PCTCN2022095006-appb-000111
Figure PCTCN2022095006-appb-000112
Figure PCTCN2022095006-appb-000113
Figure PCTCN2022095006-appb-000114
Figure PCTCN2022095006-appb-000115
Figure PCTCN2022095006-appb-000116
Figure PCTCN2022095006-appb-000117
需要说明的是，上述表32中索引为-2036，-1795，-1789，-1548，-1524，-1283，-1277，-1036，-1012，-771，-765，-524，-500，-259，-253，-12，12，253，259，500，524，765，771，1012，1036，1277，1283，1524，1548，1789，1795和2036的子载波不参与置换，因此置换前后上述子载波的频域未发生变化。
上述图11A-图11F是以26-tone-RU为置换的最小单位为例进行说明的。在一些示例中，置换可以以52-tone-RU为最小单位进行。
针对图11A示出的置换方式，假设置换前VRU包含的RU的索引包括{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m。那么，置换后的PRU包含的RU的索引包括{1，2，12+m，13+m，5，6，7，17+m，18+m}，{10+m，11+m，3，4，14+m，15+m，16+m，8，9}，或者{10+m，11+m，3，4，5，15+m，16+m，8，9}，{1，2，12+m，13+m，14+m，3，4，17+m，18+m}。同样的，由于VRU和PRU都可以通过子载波序号来指示，也可以得到类似表11和表12所示的映射表。
以m＝0为例，假设AP指示的第一VRU包含40MHz的26-tone-RU中的RU1、RU2、RU3和RU4，那么STA可以确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU1、RU2、RU12和RU13，也就是第一PRU包含的子载波索引包括[–243:–218]、[–217:–192]、[58:83]和[84:109]。或者，STA确定第一PRU包含的RU可以是如表3示出的26-tone-RU中的RU10、RU11、RU3和RU4，也就是第一PRU包含的子载波索引包括[4:29]、[30:55]、[58:83]和[84:109]。
在一些示例中，本申请实施例还提供另一种以52-tone-RU为最小单位进行置换的方法。一个242-tone-RU中包含4个52-tone-RU，索引分别为{1，2，3，4}，另一个242-tone-RU中也包含4个52-tone-RU，索引分别为{5，6，7，8}+k。也就是说，这里的52-tone-RU不再看作是由2个26-tone-RU组成，而是将52-tone-RU看作一个整体。其中，可以将两个242-tone-RU中相同位置上的52-tone-RU进行置换。例如，可以将索引为1的52-tone-RU与索引为5+k的52-tone-RU进行置换，将索引为3的52-tone-RU与索引为7+k的52-tone-RU进行置换。或者，可以将索引为2的52-tone-RU与索引为6+k的52-tone-RU进行置换，将索引为4的52-tone-RU与索引为8+k的52-tone-RU进行置换。其中，k是整数，k可以理解为两个242-tone-RU之间间隔的242-tone-RU的个数，示例性的，k＝0,4，8，12…。如果两个242-tone-RU在频域上相邻，则k＝0，如果两个242-tone-RU之间间隔一个242-tone-RU，则k＝4，以此类推。
示例性的，以52-tone-RU为最小单位进行置换时，假设AP为STA1分配的第一VRU中包括表4示出的52-tone-RU中的RU1和RU2，那么STA1可以确定第一PRU中包含表3示出的52-tone-RU中的RU5和RU2，也就是子载波索引包括[–252:–201]和[–445:–394]。或者，STA1可以确定第一PRU中包含表3示出的52-tone-RU中的RU9和RU2，也就是子载波索引包括[13:64]和[–445:–394]。
或者，STA1可以确定第一PRU中包含表3示出的52-tone-RU中的RU1和RU6，也就是子载波索引包含[–499:–448]和[–198:–147]。或者，STA1可以确定第一PRU中包含表3示出的52-tone-RU中的RU1和RU10，也就是子载波索引包括[–499:–448]和[67:118]。
同样的，在其他带宽下，例如40M，80M，160M，320M或更大带宽下，同样可以以242-tone-RU为粒度采用上述以26-tone-RU为最小单位在两个242-tone-RU之间进行置换的方法，也可以根据具体带宽以更大RU(例如52-tone-RU、106-tone-RU等)为单位(这 里不再将更大RU看作由26-tone-RU组成，而是作为一个整体)进行置换，具体可参考前述实施例，不再一一赘述。
需要说明的是，导频子载波可以参与置换，也可以不参与置换。或者，也可以在置换后的PRU中重新分配导频载波，本申请不做具体限定。
应理解，本申请实施例还可以106-tone-RU为最小单位进行置换，具体可以参见上述一26-tone-RU为最小单位进行置换的方式，此处不再赘述。
需要说明的是，上述置换方式二中以两个242-tone-RU中包含的26-tone-RU在对称位置上的置换，也可以采用非对称位置方式上的置换，本申请不予限制。
进一步的，本申请提供第一VRU和第一PRU之间的又一映射关系，即映射关系二，下面对映射关系二进行介绍。映射关系二：本申请实施例可以通过将第一VRU包含的子载波的子载波索引映射为第一PRU包含的子载波的子载波索引。
本申请实施例中，部分子载波不参与映射关系二示出的映射方式，例如DC、Null、Guard、Pilot tone，这部分子载波在VRU和PRU中的位置不改变。
示例性的，对于VRU，20MHz下有256个子载波。包括数据、直流、导频、保护和空子载波等。参阅图12A，相邻子载波间隔为20M/256＝78.125kHz。若每1MHz一个子载波，则PRU中的相邻子载波的索引间隔至少应该为1MHz/78.125kHz＝12.8。需要说明的是，子载波索引为整数，此处仅为示例。
如果多个子载波按照每1MHz中包括一个子载波的方式占满带宽后还有剩余的子载波，则考虑让1MHz中包括两个或者两个以上的子载波，使多个子载波占邻近频带。例如，如图12B所示每1MHz中可以包括两个子载波，这两个子载波在频域上相邻，也就是这两个子载波占邻近频带。
本申请实施例中考虑第一VRU的带宽是20MHz的2的正整数幂次倍，记为BW＝20x，x可取1,2,4,8,16，…。也就是第一VRU对应的传输带宽可以为20M，40M，80M，160M，320M，如果WLAN的后续协议中支持更大带宽，那么第一VRU对应的带宽也可相应增大。其中，在目前WLAN协议中，每20MHz对应9个26-tone-RU，每个26-tone-RU有26个子载波，其中包括2个导频子载波和24个数据子载波。在本申请实施例中，可以用M t表示一个20MHz中参与映射的26-tone-RU的数目，1≤M t≤9，用M c表示一个26-tone-RU中参与映射的子载波数目，1≤M c≤26。假设k为VRU包含的子载波的索引，则k可取0,1,2,3,…,M t*M c*x-1，k’为PRU包含的子载波的索引，k’满足如下公式(1)：
Figure PCTCN2022095006-appb-000118
Figure PCTCN2022095006-appb-000119
表示向下取整操作。应理解，这里的k是将参与映射的子载波从0开始重新进行编号得到的。例如，针对20MHz中第一个26-tone-RU，假设其中的子载波全部参与映射，那么k＝0的子载波可以对应于表2中的索引为-121的子载波。
假设AP分配给STA的第一VRU包含的子载波的顺序索引为[0，1，2，…，M c-1]+n*M c。那么STA可以根据上述公式(1)将VRU的子载波的顺序索引映射为第一PRU的子载波的索引。PRU包含的顺序索引为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
本申请实施例中，将VRU包含的子载波称为虚拟子载波(virtual sub-carriers，VSC)， 将PRU包含的子载波称为物理子载波(physical sub-carriers，PSC)。
对于20MHz带宽，包含9个26-tone-RU，此处每个26-tone-RU有2个导频子载波，24个数据子载波。假设9个26-tone-RU的所有数据子载波参与映射，也就是M c＝24。那么一个20MHz中参与映射的26-tone-RU数目M t＝9，一个26-tone-RU中参与映射的子载波数目M c＝24,x＝1。用k表示VRU中子载波的索引，k为整数，k取0,1,2,3,…,24*9-1。
Figure PCTCN2022095006-appb-000120
可选的，上述公式中由于导频子载波不参与映射，所以M c＝24。在一些示例中，如果导频子载波和数据子载波均参与映射，那么M c＝26，
Figure PCTCN2022095006-appb-000121
其中，在导频子载波不参与映射时，对数据子载波的编号可以不考虑导频子载波的位置，也就是说只对数据子载波进行编号。
参阅图13，第一个26-tone-RU，VSC的顺序索引k的范围是[0,23]，映射之后，PSC的顺序索引k’的值是[0,9,18,27,…,23*9],以9递增。第二个26-tone-RU，VSC的顺序索引k的范围是[24,47]，映射之后PSC的顺序索引k’的值是[1,10,19,28,…,23*9+1],以9递增。第三个26-tone-RU，VSC的顺序索引k的范围是[48,71]，映射之后PSC的顺序索引k’的值是[2,11,20,29,…,23*9+2],以9递增。第四个26-tone-RU，VSC的顺序索引k的范围是[72,95]，映射之后PSC的顺序索引k’的值是[3,12,21,30,…,23*9+3],以9递增。第五个26-tone-RU，VSC的顺序索引k的范围是[96,119]，映射之后PSC的顺序索引k’的值是[4,13,22,31,…,23*9+4],以9递增。以此类推，第九个26-tone-RU，VSC的顺序索引k的范围是[192,215]，映射之后PSC的顺序索引k’的值是[8,17,26,35,…,23*9+8],以9递增。
如果AP分配第一个26-tone-RU给STA，则实际上是将第一个26-tone-RU映射后的PRU分配给STA。应理解，第二个至第九个26-tone-RU，可以参见上述第一26-tone-RU的描述。
由于第一个52-tone-RU包括第一个26-tone-RU和第二个26-tone-RU。如果AP分配第一个52-tone-RU给STA，则实际上是将第一个26-tone-RU和第二个26-tone-RU映射后的两个PRU分配给STA。STA被分配的子载波的顺序索引是[0,9,18,27,…,23*9]和[1,10,19,28,…,23*9+1]的并集，即[0,1,9,10,18,19,27,28,..,23*9,23*9+1]。整体来看，RU子载波分布在了更大的带宽上。同时，每两个子载波在邻近频带上，例如顺序索引为0和1的子载波,为9和10的子载波。每两个子载波分布在邻近频带时，可以用这两个子载波信道估计的平均值，来作为信道估计的值，称为信道平滑(channel smoothing)，可以使估计结果更准确。应理解，第二个至第四个52-tone-RU可以参见上述第一个52-tone-RU的描述。
由于第一个106-tone-RU包括第一，二，三和四个26-tone-RU。如果AP分配第一个106-tone-RU给STA，则实际上是将第一，二，三和四个26-tone-RU映射后的四个PRU分配给STA。STA被分配的子载波的顺序索引是[0,9,18,27,…,23*9]，[1,10,19,28,…,23*9+1]，[2,11,20,29,…,23*9+2]和[3,12,21,30,…,23*9+3]的并集，即[0,1,2,3,9,10,11,12,18,19,20,21,..,23*9,23*9+1,23*9+2,23*9+3]。应理解，第二个106-tone-RU描述可以参见上述第一个106tone-RU的描述。分布在邻近频带的子载波可以做信道平滑。上述示出的子载波数量为104个，频率最低的子载波和频率最高的子载波不参与映射，因此映射前后该频率最低的子载波和频率最高的子载波的频域位置不发生变化。
以上我们使用的索引是按子载波在频带上索引从小到大的顺序获得的序号，该序号与 子载波在频带上索引一一对应，见表2-表6。如果导频子载波不参与映射，那么在对数据子载波进行编号时，可以不考虑每个26-tone-RU中包含的导频子载波，也就是可以只对数据子载波进行编号，得到数据子载波的顺序索引。示例性的，以20MHz包含的9个26-tone-RU为例，第一个26-tone-RU包含的数据子载波索引为[–121:–96]，其中导频子载波索引{-116，-102}。第二个26-tone-RU包含的数据子载波索引为[–95:–70]，其中导频子载波索引{-90，-76}；以此类推，可以得到9个26-tone-RU包含的数据子载波索引。
以下，示出各个RU中导频子载波的频带索引。
表33:各个RU中导频子载波的频带索引
Pilot indices for a 26-tone-RU
Figure PCTCN2022095006-appb-000122
上述表33中i表示26-tone-RU的索引，其中按照26-tone-RU在频域上从低到高的顺序，i的取值也是由低到高。
Figure PCTCN2022095006-appb-000123
表示导频子载波的频带索引。
以下，以第一个26-tone-RU为例，对顺序索引和频带索引的对应关系进行说明。
表34:242-tone-RU下第一个26-tone-RU中子载波的顺序索引和频带索引的对应关系表
顺序索引 0 1 2 3 4 5 6 7 8
频带索引 -121 -120 -119 -118 -117 -115 -114 -113 -112
顺序索引 9 10 11 12 13 14 15 16 17
频带索引 -111 -110 -109 -108 -107 -106 -105 -104 -103
顺序索引 18 19 20 21 22 23      
频带索引 -101 -100 -99 -98 -97 -96      
对上述9个26-tone-RU，数据子载波顺序索引编号为0到215，对应的频带索引为：
{-121,-111,-101,-92,-82,-72,-61,-52,-42,-32,-23,-13,4,14,24,33,43,53,63,73,83,93,103,112,-120,-110,-100,-91,-81,-71,-60,-51,-41,-31,-21,-12,5,15,25,34,44,54,64,74,84,94,104,113,-119,-109,-99,-89,-80,-70,-59,-50,-40,-30,-20,-11,6,16,26,35,45,55,65,75,85,95,105,114,-118,-108,-98,-88,-79,-68,-58,-49,-39,-29,-19,-9,7,17,27,37,46,56,66,77,86,96,106,115,-117,-107,-97,-87,-78,-67,-57,-47,-38,-28,-18,-8,8,18,28,38,47,57,67,78,87,97,107,117,-115,-106,-96,-86,-77,-66,-56,-46,-37,-27,-17,-7,9,19,29,39,49,58,68,79,88,98,108,118,-114,-105,-95,-85,-75,-65,-55,-45,-35,-26,-16,-6,11,20,30,40,50,59,70,80,89,99,109,119,-113,-104,-94,-84,-74,-64,-54,-44,-34,-25,-15,-5,12,21,31,41,51,60,71,81,91,100,110,120,-112,-103,-93,-83,-73,-63,-53,-43,-33,-24,-14,-4,13,23,32,42,52,61,72,82,92,101,111,121}。
在484-tone-RU下，可以看作包含18个26-tone-RU，此处每个26-tone-RU有2个导频子载波，24个数据子载波，假设18个26-tone-RU的所有数据子载波参与映射。一个20MHz中参与映射的26-tone-RU数目M t＝9，x＝2，一个26-tone-RU中参与映射的子载波数目M c＝24。用k表示VRU中VSC的索引，则k取0,1,2,3,…,24*18-1，每个VSC会被映射到一个PSC。
Figure PCTCN2022095006-appb-000124
可选的，上述公式中由于导频子载波不参与映射，所以M c＝24。在一些示例中，如果导频子载波和数据子载波均参与映射，那么M c＝26，
Figure PCTCN2022095006-appb-000125
参阅图14，第一个26-tone-RU，VSC的索引k的范围是[0,23]，映射之后，PSC的索引k’的值是[0,18,36，54,…,23*18],以18递增。第二个26-tone-RU，VSC的索引k的范围是[24,47]，映射之后，PSC的索引k’的值是[1,19,37,55,…,23*18+1],以18递增。第三个26-tone-RU，映射之后，PSC的索引k’的值是[2,20,38,56,…,23*18+2],以18递增。以此类推，第十个26-tone-RU，映射之后，PSC的索引k’的值是[9,27,45,63,…,23*18+9],以18递增。第十一个26-tone-RU，映射之后，PSC的索引k’的值是[10,28,46,64,…,23*18+10],以18递增。第十三个26-tone-RU，映射之后，PSC的索引k’的值是[12,30,48,66,…,23*18+12],以18递增。第二个至第十八个26-tone-RU可以参见上述第一个26-tone-RU的描述。
由于第一个52-tone-RU包括第一个26-tone-RU和第二个26-tone-RU。如果AP分配第一个52-tone-RU给STA，则将第一个26-tone-RU和第二个26-tone-RU映射后的两个PRU分配给STA。则第一个52-tone-RU被映射后的PSC索引是[0,18,36,54,…,23*18]和[1,19,37,55,…,23*18+1]的并集。第二个至第八个52-tone-RU可以参见上述第一个52-tone-RU的描述。分布在邻近频带的子载波可以做信道平滑。上述映射方式二可以使载波分散在更大的带宽。
以上使用的索引是按子载波在频带上索引从小到大的顺序获得的序号，该序号与子载波在频带上索引一一对应，见表2～表6。
其中，第一个26-tone-RU包含的数据子载波索引为[–243:–218]，其中导频子载波索引为{-238，-224}；
第二个26-tone-RU包含的数据子载波索引为[–217:–192]，其中导频子载波索引 {-212，-198}；
以此类推，可以得到18个26-tone-RU包含的数据子载波索引。
对这18个26-tone-RU，数据子载波顺序索引编号为0到431，对应的频带索引为：
{-243,-223,-204,-182,-163,-143,-123,-102,-83,-63,-42,-22,4,23,43,65,84,103,124,145,164,183,205,225,-242,-222,-203,-181,-162,-142,-122,-101,-82,-62,-41,-21,5,25,44,66,85,105,125,146,165,185,206,226,-241,-221,-202,-180,-161,-141,-121,-100,-81,-61,-40,-20,6,26,45,67,86,106,126,147,166,186,207,227,-240,-220,-201,-179,-160,-140,-120,-99,-80,-60,-39,-19,7,27,46,68,87,107,127,148,167,187,208,228,-239,-219,-200,-178,-159,-139,-119,-98,-79,-59,-38,-18,8,28,47,69,88,108,128,149,168,188,209,229,-237,-218,-199,-177,-157,-138,-118,-97,-77,-58,-37,-17,9,29,48,70,89,109,129,150,169,189,210,230,-236,-217,-197,-176,-156,-136,-117,-96,-76,-55,-35,-16,11,30,49,71,91,111,131,151,171,192,211,231,-235,-216,-196,-175,-155,-135,-115,-95,-75,-54,-34,-15,12,31,51,72,92,112,132,152,172,193,213,232,-234,-215,-195,-174,-154,-134,-114,-94,-74,-53,-33,-14,13,32,52,73,93,113,133,153,173,194,214,233,-233,-214,-194,-173,-153,-133,-113,-93,-73,-52,-32,-13,14,33,53,74,94,114,134,154,174,195,215,234,-232,-213,-193,-172,-152,-132,-112,-92,-72,-51,-31,-12,15,34,54,75,95,115,135,155,175,196,216,235,-231,-211,-192,-171,-151,-131,-111,-91,-71,-49,-30,-11,16,35,55,76,96,117,136,156,176,197,217,236,-230,-210,-189,-169,-150,-129,-109,-89,-70,-48,-29,-9,17,37,58,77,97,118,138,157,177,199,218,237,-229,-209,-188,-168,-149,-128,-108,-88,-69,-47,-28,-8,18,38,59,79,98,119,139,159,178,200,219,239,-228,-208,-187,-167,-148,-127,-107,-87,-68,-46,-27,-7,19,39,60,80,99,120,140,160,179,201,220,240,-227,-207,-186,-166,-147,-126,-106,-86,-67,-45,-26,-6,20,40,61,81,100,121,141,161,180,202,221,241,-226,-206,-185,-165,-146,-125,-105,-85,-66,-44,-25,-5,21,41,62,82,101,122,142,162,181,203,222,242,-225,-205,-183,-164,-145,-124,-103,-84,-65,-43,-23,-4,22,42,63,83,102,123,143,163,182,204,223,243}。
基于上述映射方式二，可以将子载波映射至较大的带宽上，使得VRU上连续的子载波，在PRU中位于相隔较远的频带上，可以提高发送功率。
上述映射方式二可以应用于20MHz、40MHz、80MHz、160MHz和320MHz带宽中。在一些示例中，还可以将映射方式一和映射方式二结合使用。也就是可以先通过映射方式一使得带宽中RU(例如以26-tone-RU为粒度)在频域上离散，再通过映射方式二使得相邻的子载波在频域上离散，这样可使映射得到的第一PRU中包含的子载波占较大的带宽，相较于单一的使用映射方式一或映射方式二，可以获得更大的发送功率。
示例性的，以40MHz带宽为例进行说明。在40MHz带宽下，52-tone-RU对应的PRU的子载波分布其实可以更分散。例如，如果要均匀遍布整个40MHz，则索引间隔可以为40M/48/78.125k＝10.667。示例性的，本申请实施例中可以将40MHz带宽中的多个26-tone-RU执行如图11B或者如图11C示出的置换操作。再通过上述公式(1)得到映射后的PRU包含的子载波的索引。以下，以40MHz带宽中的多个26-tone-RU执行如图11B示出的置换操作，再通过上述公式(1)得到映射后的PRU包含的子载波的索引为例进行说明。
例如，第一个52-tone-RU置换后包括第一个26-tone-RU和第十一个26-tone-RU(图11B中1和11标识的RU)。映射之后，得到的PSC的索引是第一个26-tone-RU和第十一个26-tone-RU映射后PSC的索引[0,18,36,54,…,23*18]和[10,28,46,64,…,23*18+10]的并集， 即[0,10,18,28,36,46,54,64,…,23*18,23*18+10]，相邻子载波索引间隔为10或8，接近10.667。按照这样映射的PRU，52-tone已经基本布满了40MHz带宽，可见，相对于映射关系二，将映射关系一和映射关系二结合可以将子载波分散在更大的带宽上。
再例如，第一个106-tone-RU置换后包括第一，三，十一和十三个26-tone-RU(图11B1，3，11和13表示的RU)。映射之后，得到的PSC的索引是第一，三，十一和十三个26-tone-RU映射后PSC的索引的并集，即[0,18,36,54,…,23*18]，[2,20,38,56,…,23*18+2]，[10,28,46,64,…,23*18+10]和[12,30,48,66,…,23*18+12]的并集。分布在邻近频带的子载波可以做信道平滑。
采用图11B示出的置换方式结合如公式(1)示出的映射方式，对上述18个26-tone-RU，数据子载波顺序索引编号为0到431，则对应的频带索引为：
{-243,-223,43,-182,84,103,-123,-102,164,183,-42,225,4,23,-204,65,-163,-143,124,145,-83,-63,205,-22,-242,-222,44,-181,85,105,-122,-101,165,185,-41,226,5,25,-203,66,-162,-142,125,146,-82,-62,206,-21,-241,-221,45,-180,86,106,-121,-100,166,186,-40,227,6,26,-202,67,-161,-141,126,147,-81,-61,207,-20,-240,-220,46,-179,87,107,-120,-99,167,187,-39,228,7,27,-201,68,-160,-140,127,148,-80,-60,208,-19,-239,-219,47,-178,88,108,-119,-98,168,188,-38,229,8,28,-200,69,-159,-139,128,149,-79,-59,209,-18,-237,-218,48,-177,89,109,-118,-97,169,189,-37,230,9,29,-199,70,-157,-138,129,150,-77,-58,210,-17,-236,30,49,-176,91,-136,-117,-96,171,-55,-35,231,11,-217,-197,71,-156,111,131,151,-76,192,211,-16,-235,31,51,-175,92,-135,-115,-95,172,-54,-34,232,12,-216,-196,72,-155,112,132,152,-75,193,213,-15,-234,32,52,-174,93,-134,-114,-94,173,-53,-33,233,13,-215,-195,73,-154,113,133,153,-74,194,214,-14,-233,33,53,-173,94,-133,-113,-93,174,-52,-32,234,14,-214,-194,74,-153,114,134,154,-73,195,215,-13,-232,34,54,-172,95,-132,-112,-92,175,-51,-31,235,15,-213,-193,75,-152,115,135,155,-72,196,216,-12,-231,35,55,-171,96,-131,-111,-91,176,-49,-30,236,16,-211,-192,76,-151,117,136,156,-71,197,217,-11,-230,37,-189,-169,97,-129,-109,-89,177,-48,218,237,17,-210,58,77,-150,118,138,157,-70,199,-29,-9,-229,38,-188,-168,98,-128,-108,-88,178,-47,219,239,18,-209,59,79,-149,119,139,159,-69,200,-28,-8,-228,39,-187,-167,99,-127,-107,-87,179,-46,220,240,19,-208,60,80,-148,120,140,160,-68,201,-27,-7,-227,40,-186,-166,100,-126,-106,-86,180,-45,221,241,20,-207,61,81,-147,121,141,161,-67,202,-26,-6,-226,41,-185,-165,101,-125,-105,-85,181,-44,222,242,21,-206,62,82,-146,122,142,162,-66,203,-25,-5,-225,42,-183,-164,102,-124,-103,-84,182,-43,223,243,22,-205,63,83,-145,123,143,163,-65,204,-23,-4}。
采用图11E示出的置换方式结合如公式(1)示出的映射方式，对上述18个26-tone-RU，数据子载波顺序索引编号为0到431，则对应的频带索引为：
{4,23,-204,65,-163,-143,124,145,-83,-63,205,-22,-243,-223,43,-182,84,103,-123,-102,164,183,-42,225,5,25,-203,66,-162,-142,125,146,-82,-62,206,-21,-242,-222,44,-181,85,105,-122,-101,165,185,-41,226,6,26,-202,67,-161,-141,126,147,-81,-61,207,-20,-241,-221,45,-180,86,106,-121,-100,166,186,-40,227,7,27,-201,68,-160,-140,127,148,-80,-60,208,-19,-240,-220,46,-179,87,107,-120,-99,167,187,-39,228,8,28,-200,69,-159,-139,128,149,-79,-59,209,-18,-239,-219,47,-178,88,108,-119,-98,168,188,-38,229,9,29,-199,70,-157,-138,129,150,-77,-58,210,-17,-237,-218,48,-177,89,109,-118,-97,169,189,-37,230,11,-217,-197,71,-156,111,131,151,-76,192,211,-16,-236,30,49,-176,91,-136,-117,-96,171,-55,-35,231,12,-216,-196,72,-155,112,132,152,-75,193,213,-15,-235,31,51,-175,92,-135,-115,-95,172,-54,-34,232,13,-215,-195,73,-154,113,133,153,-74,194,214,-1 4,-234,32,52,-174,93,-134,-114,-94,173,-53,-33,233,14,-214,-194,74,-153,114,134,154,-73,195,215,-13,-233,33,53,-173,94,-133,-113,-93,174,-52,-32,234,15,-213,-193,75,-152,115,135,155,-72,196,216,-12,-232,34,54,-172,95,-132,-112,-92,175,-51,-31,235,16,-211,-192,76,-151,117,136,156,-71,197,217,-11,-231,35,55,-171,96,-131,-111,-91,176,-49,-30,236,17,-210,58,77,-150,118,138,157,-70,199,-29,-9,-230,37,-189,-169,97,-129,-109,-89,177,-48,218,237,18,-209,59,79,-149,119,139,159,-69,200,-28,-8,-229,38,-188,-168,98,-128,-108,-88,178,-47,219,239,19,-208,60,80,-148,120,140,160,-68,201,-27,-7,-228,39,-187,-167,99,-127,-107,-87,179,-46,220,240,20,-207,61,81,-147,121,141,161,-67,202,-26,-6,-227,40,-186,-166,100,-126,-106,-86,180,-45,221,241,21,-206,62,82,-146,122,142,162,-66,203,-25,-5,-226,41,-185,-165,101,-125,-105,-85,181,-44,222,242,22,-205,63,83,-145,123,143,163,-65,204,-23,-4,-225,42,-183,-164,102,-124,-103,-84,182,-43,223,243}。
对于80MHz带宽，共有36个26-tone-RU，此处每个26-tone-RU有2个导频子载波，24个数据子载波，我们假设36个26-tone-RU的所有数据子载波参与映射。一个20MHz中参与映射的26-tone-RU数目M t＝9，一个26-tone-RU中参与映射的子载波数目M c＝24。用k表示VRU中VSC的索引，则k取0,1,2,3,…,24*36-1，每个VSC会被映射到一个PSC。
Figure PCTCN2022095006-appb-000126
可选的，上述公式中由于导频子载波不参与映射，所以M c＝24。在一些示例中，如果导频子载波和数据子载波均参与映射，那么M c＝26，
Figure PCTCN2022095006-appb-000127
参阅图15，第一个26-tone-RU，VSC的索引k的范围是[0,23]，映射之后，PSC的索引k’的值是[0,36，72,…,23*36],以36递增。第二个26-tone-RU，VSC的索引k的范围是[24,47]，映射之后，PSC的索引k’的值是[1,37,73,…,23*36+1],以36递增。第三个26-tone-RU，映射之后，PSC的索引k’的值是[2,38,74,…,23*36+2],以36递增。第四个26-tone-RU，映射之后，PSC的索引k’的值是[3,39,75,…,23*36+3],以36递增。以此类推，第十个26-tone-RU，映射之后，PSC的索引k’的值是[9,45,81,…,23*36+9],以36递增。第十一个26-tone-RU，映射之后，PSC的索引k’的值是[10,46,82,…,23*36+10],以36递增。第十三个26-tone-RU，映射之后，PSC的索引k’的值是[12,48,84,…,23*36+12],以36递增。第十九个26-tone-RU，映射之后，PSC的索引k’的值是[18,54,90,…,23*36+18],以36递增。第二十个26-tone-RU，映射之后，PSC的索引k’的值是[19,55,91,…,23*36+19],以36递增。第二十二个26-tone-RU，映射之后，PSC的索引k’的值是[21,57,93,…,23*36+21],以36递增。
由于第一个52-tone-RU包括第一个26-tone-RU和第二个26-tone-RU。如果AP分配第一个52-tone-RU给STA，则将第一个26-tone-RU和第二个26-tone-RU映射后的两个PRU分配给STA。则第一个52-tone-RU被映射后的PSC索引是[0,36,72,…,23*36]和[1,37,73,…,23*36+1]的并集。分布在邻近频带的子载波可以做信道平滑。
类似地，如果AP分配第一个106-tone-RU给STA，则将第一，二，三和四个26-tone-RU映射后的四个PRU分配给STA，对应的被映射后的PSC索引是[0,36,72,…,23*36]，[1,37,73,…,23*36+1]，[2,38,74,…,23*36+2]和[3,39,75,…,23*36+3]的并集。分布在邻近频带的子载波可以做信道平滑。
应理解，996-tone-RU中，其余的RU，如第二个至第三十二个52-tone-RU，第二个至第十六个106-tone-RU等，可以参见上述描述，此处不再赘述。
以上我们使用的索引是按子载波在频带上索引从小到大的顺序获得的序号，该与子载波在频带上索引一一对应，见表2～表6。
第一个26-tone-RU包含的数据子载波索引为[–499:–474]，其中导频子载波索引为{-494，-480}；
第二个26-tone-RU包含的数据子载波索引为[–473:–448]，其中导频子载波索引为{-468，-454}；
以此类推，可以得到36个26-tone-RU包含的数据子载波索引。
对上述36个26-tone-RU，数据子载波顺序索引编号为0到863，对应的频带索引为：
{-499,-460,-419,-379,-339,-298,-252,-213,-172,-132,-92,-51,13,52,93,133,173,214,260,299,340,380,420,461,-498,-459,-418,-378,-338,-297,-251,-212,-171,-131,-91,-50,14,53,94,134,174,215,261,300,341,381,421,462,-497,-458,-417,-377,-337,-296,-250,-211,-170,-130,-90,-49,15,54,95,135,175,216,262,301,342,382,422,463,-496,-457,-416,-376,-336,-295,-249,-210,-169,-129,-89,-48,16,55,96,136,176,217,263,302,343,383,423,464,-495,-456,-415,-375,-335,-294,-248,-209,-168,-128,-88,-47,17,56,97,137,177,218,264,303,344,384,424,465,-493,-455,-413,-374,-333,-293,-247,-208,-167,-127,-87,-46,19,57,99,138,179,219,265,304,345,385,425,466,-492,-453,-412,-373,-332,-291,-245,-207,-165,-125,-85,-45,20,59,100,139,180,221,267,305,347,387,427,467,-491,-452,-411,-371,-331,-290,-244,-205,-164,-124,-84,-43,21,60,101,141,181,222,268,307,348,388,428,469,-490,-451,-410,-370,-330,-289,-243,-204,-163,-123,-83,-42,22,61,102,142,182,223,269,308,349,389,429,470,-489,-450,-409,-369,-329,-288,-242,-203,-162,-122,-82,-41,23,62,103,143,183,224,270,309,350,390,430,471,-488,-449,-408,-368,-328,-287,-241,-202,-161,-121,-81,-40,24,63,104,144,184,225,271,310,351,391,431,472,-487,-448,-407,-367,-327,-286,-240,-201,-160,-120,-80,-39,25,64,105,145,185,226,272,311,352,392,432,473,-486,-445,-406,-365,-326,-285,-239,-198,-159,-118,-79,-38,26,67,106,147,186,227,273,314,353,394,433,474,-485,-444,-405,-364,-325,-284,-238,-197,-158,-117,-78,-37,27,68,107,148,187,228,274,315,354,395,434,475,-484,-443,-404,-363,-324,-283,-237,-196,-157,-116,-77,-36,28,69,108,149,188,229,275,316,355,396,435,476,-483,-442,-403,-362,-323,-282,-236,-195,-156,-115,-76,-35,29,70,109,150,189,230,276,317,356,397,436,477,-482,-441,-402,-361,-322,-281,-235,-194,-155,-114,-75,-34,30,71,110,151,190,231,277,318,357,398,437,478,-481,-439,-401,-359,-321,-279,-234,-193,-154,-113,-74,-33,31,73,111,153,191,233,278,319,358,399,438,479,-479,-438,-399,-358,-319,-278,-233,-191,-153,-111,-73,-31,33,74,113,154,193,234,279,321,359,401,439,481,-478,-437,-398,-357,-318,-277,-231,-190,-151,-110,-71,-30,34,75,114,155,194,235,281,322,361,402,441,482,-477,-436,-397,-356,-317,-276,-230,-189,-150,-109,-70,-29,35,76,115,156,195,236,282,323,362,403,442,483,-476,-435,-396,-355,-316,-275,-229,-188,-149,-108,-69,-28,36,77,116,157,196,237,283,324,363,404,443,484,-475,-434,-395,-354,-315,-274,-228,-187,-148,-107,-68,-27,37,78,117,158,197,238,284,325,364,405,444,485,-474,-433,-394,-353,-314,-273,-227,-186,-147,-106,-67,-26,38,79,118,159,198,239,285,326,365,406,445,486,-473,-432,-392,-352,-311,-272,-226,-185,-145,-105,-64,-25,39,80,120,160,201,240,286,327,367,407,448,487,-472,-431,-391,-351,-310,-271,-225,-184,-144,-104,-63,-24,40,81,121,161,202,241,287,328,368,408,449,488,-471,-430,-390,-350,-309,-270,-224,-183,-143,-103,-62,-23,41,82,122,162,203,242,288,329,369,409,450,489,-470,-429,-389,-349,-308,-269,-223,-182,-142,-102,-61,-22,42,83,123,163,204,243,289,330,370,410,451,490,-469,-428,-388,-348,- 307,-268,-222,-181,-141,-101,-60,-21,43,84,124,164,205,244,290,331,371,411,452,491,-467,-427,-387,-347,-305,-267,-221,-180,-139,-100,-59,-20,45,85,125,165,207,245,291,332,373,412,453,492,-466,-425,-385,-345,-304,-265,-219,-179,-138,-99,-57,-19,46,87,127,167,208,247,293,333,374,413,455,493,-465,-424,-384,-344,-303,-264,-218,-177,-137,-97,-56,-17,47,88,128,168,209,248,294,335,375,415,456,495,-464,-423,-383,-343,-302,-263,-217,-176,-136,-96,-55,-16,48,89,129,169,210,249,295,336,376,416,457,496,-463,-422,-382,-342,-301,-262,-216,-175,-135,-95,-54,-15,49,90,130,170,211,250,296,337,377,417,458,497,-462,-421,-381,-341,-300,-261,-215,-174,-134,-94,-53,-14,50,91,131,171,212,251,297,338,378,418,459,498,-461,-420,-380,-340,-299,-260,-214,-173,-133,-93,-52,-13,51,92,132,172,213,252,298,339,379,419,460,499}。
上述映射关系可以使子载波分散在更大带宽。
在80MHz带宽下，52-tone-RU和106-tone-RU对应的PRU的载波分布也可以更分散。例如，如果要使52-tone-RU均匀遍布整个80MHZ，则索引间隔可以为80M/48/78.125k＝21.333>12.8；如果要106-tone-RU均匀遍布整个80MHZ，则索引间隔可以为80M/98/78.125k＝10.449。
在80MHz带宽下，对左边的484-tone-RU和右边的484-tone-RU分别进行如图11B或者图11E示出的置换方式进行置换。以下，以80MHz带宽下，左边的484-tone-RU和右边的484-tone-RU分别进行如图11B示出的置换方式进行置换为例进行说明。应理解，160MHz带宽可以看作是上述两个80MHz带宽的复制，360MHz带宽可以看作是上述4个80MHz带宽的复制。
例如，第二个26-tone-RU(图11B中2表示的RU)置换后为第十一个26-tone-RU(图11B中11表示的RU)，映射后的PSC的索引为第十一个26-tone-RU映射后PSC的索引，即[10,46,82,…,23*36+10],以36递增。
例如，第一个52-tone-RU置换后包括第一个26-tone-RU(图11B中1表示的RU)和第十一个26-tone-RU(图11B中11表示的RU)。映射之后，得到的PSC的索引是第一个26-tone-RU和第十一个26-tone-RU映射后PSC的索引[0,36,72,…,23*36]和[10,46,82,…,23*36+10]的并集，即[0,10,36,46,72,82,…,23*36,23*36+10]，相邻子载波索引间隔为10或26，接近或超过12.8。按照这样设计的PRU，52-tone已经基本布满了80MHz带宽，可见，相对于映射关系二，将映射关系一和映射关系二结合，使得子载波分散在了更大带宽上。
再例如，第一个106-tone-RU置换后包括第一，三，十一和十三个26-tone-RU(图11B中1、3、11和13表示的RU)，映射之后，得到的PSC的索引是第一，三，十一和十三个26-tone-RU映射后PSC的索引的并集，即[0,36,72,…,23*36]，[2,38,74,…,23*36+2]，[10,46,82,…,23*36+10]和[12,48,84,…,23*36+12]的并集。分布在邻近频带的子载波可以做信道平滑。
采用上述图11B所示的置换方式，对36个26-tone-RU，数据子载波顺序索引编号为0到863，对应的频带索引为：
{-499,-213,-172,-379,-92,-298,-252,-460,-419,-132,-339,-51,13,299,340,133,420,214,260,52,93,380,173,461,-498,-212,-171,-378,-91,-297,-251,-459,-418,-131,-338,-50,14,300,341,134,421,215,261,53,94,381,174,462,-497,-211,-170,-377,-90,-296,-250,-458,-417,-130,-337,-49,15,301,342,135,422,216,262,54,95,382,175,463,-496,-210,-169,-376,-89,-295,-249,-457,-416,-129,-336, -48,16,302,343,136,423,217,263,55,96,383,176,464,-495,-209,-168,-375,-88,-294,-248,-456,-415,-128,-335,-47,17,303,344,137,424,218,264,56,97,384,177,465,-493,-208,-167,-374,-87,-293,-247,-455,-413,-127,-333,-46,19,304,345,138,425,219,265,57,99,385,179,466,-492,-207,-165,-373,-85,-291,-245,-453,-412,-125,-332,-45,20,305,347,139,427,221,267,59,100,387,180,467,-491,-205,-164,-371,-84,-290,-244,-452,-411,-124,-331,-43,21,307,348,141,428,222,268,60,101,388,181,469,-490,-204,-163,-370,-83,-289,-243,-451,-410,-123,-330,-42,22,308,349,142,429,223,269,61,102,389,182,470,-489,-203,-162,-369,-82,-288,-242,-450,-409,-122,-329,-41,23,309,350,143,430,224,270,62,103,390,183,471,-488,-202,-161,-368,-81,-287,-241,-449,-408,-121,-328,-40,24,310,351,144,431,225,271,63,104,391,184,472,-487,-201,-160,-367,-80,-286,-240,-448,-407,-120,-327,-39,25,311,352,145,432,226,272,64,105,392,185,473,-486,-445,-159,-365,-79,-38,-239,-198,-406,-118,-326,-285,26,67,353,147,433,474,273,314,106,394,186,227,-485,-444,-158,-364,-78,-37,-238,-197,-405,-117,-325,-284,27,68,354,148,434,475,274,315,107,395,187,228,-484,-443,-157,-363,-77,-36,-237,-196,-404,-116,-324,-283,28,69,355,149,435,476,275,316,108,396,188,229,-483,-442,-156,-362,-76,-35,-236,-195,-403,-115,-323,-282,29,70,356,150,436,477,276,317,109,397,189,230,-482,-441,-155,-361,-75,-34,-235,-194,-402,-114,-322,-281,30,71,357,151,437,478,277,318,110,398,190,231,-481,-439,-154,-359,-74,-33,-234,-193,-401,-113,-321,-279,31,73,358,153,438,479,278,319,111,399,191,233,-479,-438,-153,-358,-73,-31,-233,-191,-399,-111,-319,-278,33,74,359,154,439,481,279,321,113,401,193,234,-478,-437,-151,-357,-71,-30,-231,-190,-398,-110,-318,-277,34,75,361,155,441,482,281,322,114,402,194,235,-477,-436,-150,-356,-70,-29,-230,-189,-397,-109,-317,-276,35,76,362,156,442,483,282,323,115,403,195,236,-476,-435,-149,-355,-69,-28,-229,-188,-396,-108,-316,-275,36,77,363,157,443,484,283,324,116,404,196,237,-475,-434,-148,-354,-68,-27,-228,-187,-395,-107,-315,-274,37,78,364,158,444,485,284,325,117,405,197,238,-474,-433,-147,-353,-67,-26,-227,-186,-394,-106,-314,-273,38,79,365,159,445,486,285,326,118,406,198,239,-226,-432,-392,-352,-311,-25,-473,-185,-145,-105,-64,-272,286,80,120,160,201,487,39,327,367,407,448,240,-225,-431,-391,-351,-310,-24,-472,-184,-144,-104,-63,-271,287,81,121,161,202,488,40,328,368,408,449,241,-224,-430,-390,-350,-309,-23,-471,-183,-143,-103,-62,-270,288,82,122,162,203,489,41,329,369,409,450,242,-223,-429,-389,-349,-308,-22,-470,-182,-142,-102,-61,-269,289,83,123,163,204,490,42,330,370,410,451,243,-222,-428,-388,-348,-307,-21,-469,-181,-141,-101,-60,-268,290,84,124,164,205,491,43,331,371,411,452,244,-221,-427,-387,-347,-305,-20,-467,-180,-139,-100,-59,-267,291,85,125,165,207,492,45,332,373,412,453,245,-219,-425,-385,-345,-304,-19,-466,-179,-138,-99,-57,-265,293,87,127,167,208,493,46,333,374,413,455,247,-218,-424,-384,-344,-303,-17,-465,-177,-137,-97,-56,-264,294,88,128,168,209,495,47,335,375,415,456,248,-217,-423,-383,-343,-302,-16,-464,-176,-136,-96,-55,-263,295,89,129,169,210,496,48,336,376,416,457,249,-216,-422,-382,-342,-301,-15,-463,-175,-135,-95,-54,-262,296,90,130,170,211,497,49,337,377,417,458,250,-215,-421,-381,-341,-300,-14,-462,-174,-134,-94,-53,-261,297,91,131,171,212,498,50,338,378,418,459,251,-214,-420,-380,-340,-299,-13,-461,-173,-133,-93,-52,-260,298,92,132,172,213,499,51,339,379,419,460,252}。
如果采用11E所示的置换方式，对36个26-tone-RU，数据子载波顺序索引编号为0到863，对应的频带索引为：
{-499,52,93,-379,173,-298,-252,299,340,-132,420,-51,13,-460,-419,133,-339,214,260,-213, -172,380,-92,461,-498,53,94,-378,174,-297,-251,300,341,-131,421,-50,14,-459,-418,134,-338,215,261,-212,-171,381,-91,462,-497,54,95,-377,175,-296,-250,301,342,-130,422,-49,15,-458,-417,135,-337,216,262,-211,-170,382,-90,463,-496,55,96,-376,176,-295,-249,302,343,-129,423,-48,16,-457,-416,136,-336,217,263,-210,-169,383,-89,464,-495,56,97,-375,177,-294,-248,303,344,-128,424,-47,17,-456,-415,137,-335,218,264,-209,-168,384,-88,465,-493,57,99,-374,179,-293,-247,304,345,-127,425,-46,19,-455,-413,138,-333,219,265,-208,-167,385,-87,466,-492,59,100,-373,180,-291,-245,305,347,-125,427,-45,20,-453,-412,139,-332,221,267,-207,-165,387,-85,467,-491,60,101,-371,181,-290,-244,307,348,-124,428,-43,21,-452,-411,141,-331,222,268,-205,-164,388,-84,469,-490,61,102,-370,182,-289,-243,308,349,-123,429,-42,22,-451,-410,142,-330,223,269,-204,-163,389,-83,470,-489,62,103,-369,183,-288,-242,309,350,-122,430,-41,23,-450,-409,143,-329,224,270,-203,-162,390,-82,471,-488,63,104,-368,184,-287,-241,310,351,-121,431,-40,24,-449,-408,144,-328,225,271,-202,-161,391,-81,472,-487,64,105,-367,185,-286,-240,311,352,-120,432,-39,25,-448,-407,145,-327,226,272,-201,-160,392,-80,473,-486,-445,106,-365,186,227,-239,-198,353,-118,433,474,26,67,-406,147,-326,-285,273,314,-159,394,-79,-38,-485,-444,107,-364,187,228,-238,-197,354,-117,434,475,27,68,-405,148,-325,-284,274,315,-158,395,-78,-37,-484,-443,108,-363,188,229,-237,-196,355,-116,435,476,28,69,-404,149,-324,-283,275,316,-157,396,-77,-36,-483,-442,109,-362,189,230,-236,-195,356,-115,436,477,29,70,-403,150,-323,-282,276,317,-156,397,-76,-35,-482,-441,110,-361,190,231,-235,-194,357,-114,437,478,30,71,-402,151,-322,-281,277,318,-155,398,-75,-34,-481,-439,111,-359,191,233,-234,-193,358,-113,438,479,31,73,-401,153,-321,-279,278,319,-154,399,-74,-33,-479,-438,113,-358,193,234,-233,-191,359,-111,439,481,33,74,-399,154,-319,-278,279,321,-153,401,-73,-31,-478,-437,114,-357,194,235,-231,-190,361,-110,441,482,34,75,-398,155,-318,-277,281,322,-151,402,-71,-30,-477,-436,115,-356,195,236,-230,-189,362,-109,442,483,35,76,-397,156,-317,-276,282,323,-150,403,-70,-29,-476,-435,116,-355,196,237,-229,-188,363,-108,443,484,36,77,-396,157,-316,-275,283,324,-149,404,-69,-28,-475,-434,117,-354,197,238,-228,-187,364,-107,444,485,37,78,-395,158,-315,-274,284,325,-148,405,-68,-27,-474,-433,118,-353,198,239,-227,-186,365,-106,445,486,38,79,-394,159,-314,-273,285,326,-147,406,-67,-26,39,-432,-392,-352,-311,240,286,-185,-145,-105,-64,487,-473,80,120,160,201,-272,-226,327,367,407,448,-25,40,-431,-391,-351,-310,241,287,-184,-144,-104,-63,488,-472,81,121,161,202,-271,-225,328,368,408,449,-24,41,-430,-390,-350,-309,242,288,-183,-143,-103,-62,489,-471,82,122,162,203,-270,-224,329,369,409,450,-23,42,-429,-389,-349,-308,243,289,-182,-142,-102,-61,490,-470,83,123,163,204,-269,-223,330,370,410,451,-22,43,-428,-388,-348,-307,244,290,-181,-141,-101,-60,491,-469,84,124,164,205,-268,-222,331,371,411,452,-21,45,-427,-387,-347,-305,245,291,-180,-139,-100,-59,492,-467,85,125,165,207,-267,-221,332,373,412,453,-20,46,-425,-385,-345,-304,247,293,-179,-138,-99,-57,493,-466,87,127,167,208,-265,-219,333,374,413,455,-19,47,-424,-384,-344,-303,248,294,-177,-137,-97,-56,495,-465,88,128,168,209,-264,-218,335,375,415,456,-17,48,-423,-383,-343,-302,249,295,-176,-136,-96,-55,496,-464,89,129,169,210,-263,-217,336,376,416,457,-16,49,-422,-382,-342,-301,250,296,-175,-135,-95,-54,497,-463,90,130,170,211,-262,-216,337,377,417,458,-15,50,-421,-381,-341,-300,251,297,-174,-134,-94,-53,498,-462,91,131,171,212,-261,-215,338,378,418,459,-14,51,-420,-380,-340,-299,252,298,-173,-133,-93,-52,499,-461,92,132,172,213,-260,-214,339,379,419,460,-13}。
上文中，图11B中的m＝0，也就是相邻242-tone-RU之间进行置换后，在通过公式(1)所示的公式将VRU映射为第一PRU。
应理解，m还可以为9、18、27等。以下，以m＝9为例进行说明。也就是第一个242-tone-RU和第三个242-tone-RU之间进行置换，第二个242-tone-RU和第四个242-tone-RU之间进行置换。
参阅图11C，例如，第一个52-tone-RU置换后包括第一个26-tone-RU和第二十个26-tone-RU(图中1L和2R表示的RU)，映射之后，得到的PSC的索引是第一个26-tone-RU和第二十个26-tone-RU映射后PSC的索引[0,36,72,…,23*36]和[19,55,91,…,23*36+19]的并集，即[0,19,36,55,72,91,…,23*36,23*36+19]，相邻子载波索引间隔为19或17，如索引为0和19的子载波，或索引为19和36的子载波，超过12.8。按照上述方法，52-tone已经布满了80MHz带宽，可见，相对于映射关系二，将映射关系一和映射关系二结合，使得子载波分散在了更大带宽上。
再例如，第一个106-tone-RU置换后包括第一，二十，三和二十二个26-tone-RU(图中1L，2R，3L和4R表示的RU)，映射之后，得到的PSC的索引是第一，二十，三和二十二个26-tone-RU映射后PSC的索引的并集，即[0,36,72,…,23*36]，[19,55,91,…,23*36+19]，[2,38,74,…,23*36+2]和[21,57,93,…,23*36+21]的并集。分布在邻近频带的子载波可以做信道平滑。不在邻近频带的子载波间隔为17或19，如索引为2和19的子载波，或索引为0和19的子载波，超过12.8。可见，相对于映射关系二，将映射关系一和映射关系二结合，使得子载波分散在了更大带宽上。
采用上述图11C所示的置换方式，对36个26-tone-RU，数据子载波顺序索引编号为0到863，对应的频带索引为：
{-499,52,93,-379,173,-298,-252,299,340,-132,420,-51,13,-460,-419,133,-339,214,260,-213,-172,380,-92,461,-498,53,94,-378,174,-297,-251,300,341,-131,421,-50,14,-459,-418,134,-338,215,261,-212,-171,381,-91,462,-497,54,95,-377,175,-296,-250,301,342,-130,422,-49,15,-458,-417,135,-337,216,262,-211,-170,382,-90,463,-496,55,96,-376,176,-295,-249,302,343,-129,423,-48,16,-457,-416,136,-336,217,263,-210,-169,383,-89,464,-495,56,97,-375,177,-294,-248,303,344,-128,424,-47,17,-456,-415,137,-335,218,264,-209,-168,384,-88,465,-493,57,99,-374,179,-293,-247,304,345,-127,425,-46,19,-455,-413,138,-333,219,265,-208,-167,385,-87,466,-492,59,100,-373,180,-291,-245,305,347,-125,427,-45,20,-453,-412,139,-332,221,267,-207,-165,387,-85,467,-491,60,101,-371,181,-290,-244,307,348,-124,428,-43,21,-452,-411,141,-331,222,268,-205,-164,388,-84,469,-490,61,102,-370,182,-289,-243,308,349,-123,429,-42,22,-451,-410,142,-330,223,269,-204,-163,389,-83,470,-489,62,103,-369,183,-288,-242,309,350,-122,430,-41,23,-450,-409,143,-329,224,270,-203,-162,390,-82,471,-488,63,104,-368,184,-287,-241,310,351,-121,431,-40,24,-449,-408,144,-328,225,271,-202,-161,391,-81,472,-487,64,105,-367,185,-286,-240,311,352,-120,432,-39,25,-448,-407,145,-327,226,272,-201,-160,392,-80,473,-486,-445,106,-365,186,227,-239,-198,353,-118,433,474,26,67,-406,147,-326,-285,273,314,-159,394,-79,-38,-485,-444,107,-364,187,228,-238,-197,354,-117,434,475,27,68,-405,148,-325,-284,274,315,-158,395,-78,-37,-484,-443,108,-363,188,229,-237,-196,355,-116,435,476,28,69,-404,149,-324,-283,275,316,-157,396,-77,-36,-483,-442,109,-362,189,230,-236,-195,356,-115,436,477,29,70,-403,150,-323,-282,276,317,-156,397,-76,-35,-482,-441,110,-361,190,231,-235,-194,357,-114,437,478,30,71,-402,151,-322,-28 1,277,318,-155,398,-75,-34,-481,-439,111,-359,191,233,-234,-193,358,-113,438,479,31,73,-401,153,-321,-279,278,319,-154,399,-74,-33,-479,-438,113,-358,193,234,-233,-191,359,-111,439,481,33,74,-399,154,-319,-278,279,321,-153,401,-73,-31,-478,-437,114,-357,194,235,-231,-190,361,-110,441,482,34,75,-398,155,-318,-277,281,322,-151,402,-71,-30,-477,-436,115,-356,195,236,-230,-189,362,-109,442,483,35,76,-397,156,-317,-276,282,323,-150,403,-70,-29,-476,-435,116,-355,196,237,-229,-188,363,-108,443,484,36,77,-396,157,-316,-275,283,324,-149,404,-69,-28,-475,-434,117,-354,197,238,-228,-187,364,-107,444,485,37,78,-395,158,-315,-274,284,325,-148,405,-68,-27,-474,-433,118,-353,198,239,-227,-186,365,-106,445,486,38,79,-394,159,-314,-273,285,326,-147,406,-67,-26,39,-432,-392,-352,-311,240,286,-185,-145,-105,-64,487,-473,80,120,160,201,-272,-226,327,367,407,448,-25,40,-431,-391,-351,-310,241,287,-184,-144,-104,-63,488,-472,81,121,161,202,-271,-225,328,368,408,449,-24,41,-430,-390,-350,-309,242,288,-183,-143,-103,-62,489,-471,82,122,162,203,-270,-224,329,369,409,450,-23,42,-429,-389,-349,-308,243,289,-182,-142,-102,-61,490,-470,83,123,163,204,-269,-223,330,370,410,451,-22,43,-428,-388,-348,-307,244,290,-181,-141,-101,-60,491,-469,84,124,164,205,-268,-222,331,371,411,452,-21,45,-427,-387,-347,-305,245,291,-180,-139,-100,-59,492,-467,85,125,165,207,-267,-221,332,373,412,453,-20,46,-425,-385,-345,-304,247,293,-179,-138,-99,-57,493,-466,87,127,167,208,-265,-219,333,374,413,455,-19,47,-424,-384,-344,-303,248,294,-177,-137,-97,-56,495,-465,88,128,168,209,-264,-218,335,375,415,456,-17,48,-423,-383,-343,-302,249,295,-176,-136,-96,-55,496,-464,89,129,169,210,-263,-217,336,376,416,457,-16,49,-422,-382,-342,-301,250,296,-175,-135,-95,-54,497,-463,90,130,170,211,-262,-216,337,377,417,458,-15,50,-421,-381,-341,-300,251,297,-174,-134,-94,-53,498,-462,91,131,171,212,-261,-215,338,378,418,459,-14,51,-420,-380,-340,-299,252,298,-173,-133,-93,-52,499,-461,92,132,172,213,-260,-214,339,379,419,460,-13}。
当然，在通过公式(1)将子载波进行映射之前，还可以通过映射关系一中所示的图9A、图9B、图10A或图10B等方式，将26-tone-RU或者52-tone-RU进行两两置换。
对于载波数量为2*996，3*996，或4*996的MRU/RU，每996-tone可以采用上述996-tone-RU所示的映射关系。对不同的996-tone，可以采用相同或者不同的映射关系，也可以全部或者仅部分996-tone进行映射和置换，本申请不做具体限定。
需要说明的是，VRU和PRU之间的映射关系可以协议提前约定好，例如，将本申请实施例所提供的映射表格预先存好，根据资源分配指示信息确定VRU后查表可以得到实际发送数据的PRU，也可以将映射关系作为一种规则，第一通信装置接收指示VRU的资源指示信息后，进一步根据该规则计算出相应的PRU；另外，也可以在第二通信装置发送资源分配指示信息之前或之后或发送资源指示信息的同时将该映射关系告知第一通信装置，第一通信装置进而根据资源指示信息和该映射关系得到PRU，本申请不作限定。
上述本申请提供的实施例中，分别从STA和AP之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，STA和AP可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
下面结合附图介绍本申请实施例中用来实现上述方法的通信装置。因此，上文中的内容均可以用于后续实施例中，重复的内容不再赘述。
图16为本申请实施例提供的通信装置1600的示意性框图。该通信装置1600可以对应实现上述各个方法实施例中由STA或AP实现的功能或者步骤。该通信装置可以包括处理单元1610和收发单元1620。可选的，还可以包括存储单元，该存储单元可以用于存储指令(代码或者程序)和/或数据。处理单元1610和收发单元1620可以与该存储单元耦合，例如，处理单元1610可以读取存储单元中的指令(代码或者程序)和/或数据，以实现相应的方法。上述各个单元可以独立设置，也可以部分或者全部集成。
在一些可能的实施方式中，通信装置1600能够对应实现上述方法实施例中发送端的通信设备的行为和功能。例如通信装置1600可以为AP，也可以为应用于AP中的部件(例如芯片或者电路)。收发单元1620可以用于执行图7所示的实施例中由AP所执行的全部接收或发送操作。例如图7所示的实施例中的S701和S703，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1610用于执行如图7所示的实施例中由AP所执行的除了收发操作之外的全部操作，和/或用于支持本文所描述的技术的其它过程。
例如，处理单元1610，用于生成资源指示信息，资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；收发单元1620，用于发送资源指示信息；收发单元1620，还用于在第一PRU上接收数据。
在一些可能的实施方式中，通信装置1600能够对应实现上述方法实施例中接收端的通信设备的行为和功能。例如通信装置1600可以为STA或AP，也可以为应用于STA或AP中的部件(例如芯片或者电路)。收发单元1620可以用于执行图7所示的实施例中由第二设备所执行的全部接收或发送操作。例如图7所示的实施例中的S701和S703，和/或用于支持本文所描述的技术的其它过程；其中，处理单元1610用于执行如图7所示的实施例中由第二设备所执行的除了收发操作之外的全部操作，例如图7所示的实施例中的S702，和/或用于支持本文所描述的技术的其它过程。
例如，收发单元1620，用于接收资源指示信息，资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配一个或多个第一VRU的站点的站点信息，第一VRU包括多个在频域上连续的子载波；处理单元1610，用于根据资源指示信息确定第一物理资源单元PRU，其中，第一PRU与第一VRU之间存在映射关系，第一PRU包括多个在频域上离散的子载波组，一个子载波组包括一个子载波，或者包括至少两个连续的子载波；收发单元1620，还用于在第一PRU上传输数据。
应理解，本申请实施例中的处理单元1610可以由处理器或处理器相关电路组件实现，收发单元1620可以由收发器或收发器相关电路组件或者通信接口实现。
如图17所示为本申请实施例提供的通信装置1700，其中，通信装置1700可以是AP或STA或交织器，能够实现本申请实施例提供的方法中AP或STA的功能；通信装置1700也可以是能够支持AP实现本申请实施例提供的方法中对应的功能的装置，或者能够支持STA实现本申请实施例提供的方法中对应的功能的装置。其中，该通信装置1700可以为芯片或芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
在硬件实现上，上述收发单元1620可以为收发器1710。
通信装置1700包括至少一个处理器1720，用于实现或用于支持通信装置1700实现本申请实施例提供的方法中AP或STA的功能，例如生成前述资源指示信息。通信装置1700 还可以包括至少一个存储器1730，用于存储程序指令和/或数据。存储器1730和处理器1720耦合。本申请实施例中的耦合是装置、单元或模块之间的间接耦合或通信连接，可以是电性，机械或其它的形式，用于装置、单元或模块之间的信息交互。处理器1720可能和存储器1730协同操作。处理器1720可能执行存储器1730中存储的程序指令和/或数据，以使得通信装置1700实现相应的方法。所述至少一个存储器中的至少一个可以位于处理器中。
通信装置1700还可以包括收发器1710，用于通过传输介质和其它设备进行通信，从而用于通信装置1700中的装置可以和其它设备进行通信。示例性地，当该通信装置为AP时，该其它设备为STA或AP；或者，当该通信装置为STA时，该其它设备为STA或AP。处理器1720可以利用收发器1710收发数据。收发器1710具体可以是收发器。该通信装置1700还可以射频单元，该射频单元可以独立于通信装置1700之外，也可以是集成在通信装置1700之内。当然，上述的该收发器1710还可以包括天线，例如独立于通信装置1700之外的拉远的天线，也可以是集成在通信装置1700之内的天线。
本申请实施例中不限定上述收发器1710、处理器1720以及存储器1730之间的具体连接介质。本申请实施例在图17中以存储器1730、处理器1720以及收发器1710之间通过总线1740连接，总线在图17中以粗线表示，其它部件之间的连接方式，仅是进行示意性说明，并不引以为限。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图17中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
在本申请实施例中，处理器1720可以是通用处理器、数字信号处理器、专用集成电路、现场可编程门阵列或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件，可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。
在本申请实施例中，存储器1730可以是非易失性存储器，比如硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)等，还可以是易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)。存储器是能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。本申请实施例中的存储器还可以是电路或者其它任意能够实现存储功能的装置，用于存储程序指令和/或数据。
需要说明的是，上述实施例中的通信装置可以是终端也可以是电路，也可以是应用于终端中的芯片或者其他具有上述终端功能的组合器件、部件等。当通信装置是终端时，收发单元可以是收发器，可以包括天线和射频电路等，处理单元可以是处理器，例如：中央处理单元(central processing unit，CPU)。当通信装置是具有上述终端功能的部件时，收发单元可以是射频单元，处理单元可以是处理器。当通信装置是芯片或芯片系统时，收发单元可以是芯片或芯片系统的输入输出接口、处理单元可以是芯片或芯片系统的处理器。
作为一种可能的产品形态，本申请实施例所述的AP和STA，还可以使用下述来实现：一个或多个FPGA(现场可编程门阵列)、PLD(可编程逻辑器件)、控制器、状态机、门逻辑、分立硬件部件、任何其它适合的电路、或者能够执行本申请通篇所描述的各种功能的电路的任意组合。
本申请实施例中的发送端的通信设备可以是AP，也可以是STA。接收端的通信设备 可以是AP，也可以是STA。应理解，上述各种产品形态的AP，具有上述方法实施例中AP的任意功能，实现上述方法实施例中AP执行的步骤，产生的有益效果均可参考前述方法实施例，此处不再赘述；上述各种产品形态的STA，具有上述方法实施例中STA的任意功能，实现上述方法实施例中STA执行的步骤，产生的有益效果均可参考前述方法实施例，此处不再赘述。
本申请实施例还提供一种通信系统，具体的，通信系统包括第二设备和第一设备，或者还可以包括更多个第一设备和第二设备。示例性的，该通信系统包括用于实现上述图7的相关功能的STA或AP。
本申请实施例中还提供一种计算机可读存储介质，包括指令，当其在计算机上运行时，使得计算机执行图7中STA或AP执行的方法。
本申请实施例中还提供一种计算机程序产品，包括计算机程序代码或指令，当计算机程序代码或指令在计算机上运行时，使得计算机执行图7中STA或AP执行的方法。
本申请实施例提供了一种芯片系统，该芯片系统包括处理器，还可以包括存储器，用于实现前述方法中STA或AP备的功能。该芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。
本申请实施例还提供了一种通信装置，包括处理器和接口；所述处理器，用于执行上述任一方法实施例所述的资源指示方法。
应理解，上述通信装置可以是一个芯片，所述处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，改存储器可以集成在处理器中，可以位于所述处理器之外，独立存在。
应理解，本申请实施例中的术语“系统”和“网络”可被互换使用。“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b或c中的至少一项(个)，可以表示：a，b，c，a和b，a和c，b和c，或a、b和c，其中a，b，c可以是单个，也可以是多个。
以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。例如，第一信息和第二信息，只是为了区分不同的指示信息，而并不是表示这两种信息的优先级、或者重要程度等的不同。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
另外，在本申请实施例中，“示例性的”一词用于表示例子或说明。本申请实施例汇总被描述为“示例”的任何实施例或实现方案不应被解释为比其他实施例或实现方案更优选。也就是，使用“示例”一词旨在以具体方式呈现概念。
应理解，本申请中，除特殊说明外，各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没 有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
本申请实施例提供的方法中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，简称DSL)或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机可以存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，数字视频光盘(digital video disc，简称DVD))、或者半导体介质(例如，SSD)等。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (18)

  1. 一种资源指示方法，其特征在于，包括：
    第一通信装置接收资源指示信息，所述资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配所述一个或多个第一VRU的站点的站点信息，所述第一VRU包括多个在频域上连续的子载波；
    所述第一通信装置根据所述资源指示信息确定第一物理资源单元PRU，其中，所述第一PRU与所述第一VRU之间存在映射关系，所述第一PRU包括多个在频域上离散的子载波组，一个所述子载波组包括一个子载波，或者包括至少两个连续的子载波；
    所述第一通信装置在所述第一PRU上传输数据。
  2. 一种资源指示方法，其特征在于，包括：
    第二通信装置发送资源指示信息，所述资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配所述一个或多个第一VRU的站点的站点信息，所述第一VRU包括多个在频域上连续的子载波；
    所述第二通信装置在第一物理资源单元PRU上接收数据，其中，所述第一PRU与所述第一VRU之间存在映射关系，所述第一PRU包括多个在频域上离散的子载波组，一个所述子载波组包括一个子载波，或者包括至少两个连续的子载波。
  3. 根据权利要求1或2所述的方法，其特征在于，所述映射关系包括：
    所述一个或多个第一VRU中的一个第一VRU的索引与其对应的所述第一PRU的索引的差值为第一设定值；或，
    所述一个或多个第一VRU中的一个第一VRU的索引与其对应的所述第一PRU的索引相同；
    其中，所述一个或多个第一VRU中的一个第一VRU的索引是根据所述资源单元分配信息确定的。
  4. 根据权利要求3所述的方法，其特征在于，所述映射关系具体包括：
    以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，所述9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，所述9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是整数，q＝9*b，b是整数，b表示所述第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；
    其中，所述一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应所述一个或多个第一VRU中的一个第一VRU的第一PRU索引为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
  5. 根据权利要求3所述的方法，其特征在于，所述映射关系具体包括：
    所述第二通信装置分配的最大资源带宽大于或等于40MHz，所述最大资源带宽包括至少2个242-tone-RU,以所述至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，所述18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m，所述18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝0,9,18,27,…。
  6. 根据权利要求1～5所述的方法，其特征在于，所述第一VRU中序号为k的子载波，基于所述映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
    Figure PCTCN2022095006-appb-100001
    其中，M t表示每20MHz中参与映射的所述第一VRU的数目，M t为整数，1≤M t≤9，x为整数，x＝1,2,4,8,16，…，M t*x表示参与映射的所述第一VRU的总数目，mod()表示取余操作，M c表示一个所述第一VRU中参与映射的子载波数目，1≤M c≤26，k为整数，k＝0,1,2…，M t*M c*x-1。
  7. 根据权利要求6所述的方法，其特征在于，所述第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；所述第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n为整数，n＝0,1,2…,M t*x-1。
  8. 一种通信装置，其特征在于，包括：处理单元和收发单元；
    所述收发单元，用于接收资源指示信息，所述资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配所述一个或多个第一VRU的站点的站点信息，所述第一VRU包括多个在频域上连续的子载波；
    所述处理单元，用于根据所述资源指示信息确定第一物理资源单元PRU，其中，所述第一PRU与所述第一VRU之间存在映射关系，所述第一PRU包括多个在频域上离散的子载波组，一个所述子载波组包括一个子载波，或者包括至少两个连续的子载波；
    所述收发单元，还用于在所述第一PRU上传输数据。
  9. 一种通信装置，其特征在于，包括：处理单元和收发单元；
    所述处理单元，用于生成资源指示信息，所述资源指示信息包括：用于指示一个或多个第一虚拟资源单元VRU的资源单元分配信息和被分配所述一个或多个第一VRU的站点的站点信息，所述第一VRU包括多个在频域上连续的子载波；
    所述收发单元，用于发送所述资源指示信息；
    所述收发单元，还用于在所述第一PRU上接收数据。
  10. 根据权利要求8或9所述的装置，其特征在于，所述映射关系包括：
    所述一个或多个第一VRU中的一个第一VRU的索引与其对应的所述第一PRU的索引的差值为第一设定值；或，
    所述一个或多个第一VRU中的一个第一VRU的索引与其对应的所述第一PRU的索引相同；
    其中，所述一个或多个第一VRU中的一个第一VRU的索引是根据所述资源单元分配 信息确定的。
  11. 根据权利要求10所述的装置，其特征在于，所述映射关系具体包括：
    以每20MHz中包含的9个26-tone-RU中的每个26-tone-RU为最小单位映射，所述9个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}+q，所述9个26-tone-RU映射后得到的索引分别为{1，7，3，9，5，6，2，8，4}+q，或者{6，2，8，4，5，1，7，3，9}+q，或者{1，2，8，9，5，6，7，3，4}+q，或者{6，7，3，4，5，1，2，8，9}+q，q是一个整数，q＝9*b，b是整数，b表示所述第二通信装置分配的最大资源带宽中包含的20MHz的个数减1，q＝0,9,18,27,…；
    其中，所述一个或多个第一VRU中的一个第一VRU是索引为{1，2，3，4，5，6，7，8，9}+q的26-tone-RU中的一个或多个，对应所述一个或多个第一VRU中的一个第一VRU的第一PRU索引是为{1，7，3，9，5，6，2，8，4}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，2，8，4，5，1，7，3，9}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的第一VRU的第一PRU是索引{1，2，8，9，5，6，7，3，4}+q的26-tone-RU中的一个或多个，或者对应所述一个或多个第一VRU中的一个第一VRU的第一PRU是索引{6，7，3，4，5，1，2，8，9}+q的26-tone-RU中的一个或多个。
  12. 根据权利要求10所述的装置，其特征在于，所述映射关系具体包括：
    所述第二通信装置分配的最大资源带宽大于或等于40MHz，所述最大资源带宽包括至少2个242-tone-RU,以所述至少2个242-tone-RU包括的18个26-tone-RU中的每个26-tone-RU为最小单位映射，所述18个26-tone-RU的索引分别为{1，2，3，4，5，6，7，8，9}，{10，11，12，13，14，15，16，17，18}+m，所述18个26-tone-RU映射后得到的索引分别为{1，11+m，3，13+m，5，6，16+m，8，18+m}，{10+m，2，12+m，4，14+m，15+m，7，17+m，9}，或者{10+m，2，12+m，4，5，15+m，7，17+m，9}，{1，11+m，3，13+m，14+m，6，16+m，8，18+m}，m是一个整数，m＝9*a，a是整数，a表示所述至少两个242-tone-RU之间间隔的242-tone-RU的个数，m＝＝0,9,18,27,…。
  13. 根据权利要求8～12任一所述的装置，其特征在于，所述第一VRU中序号为k的子载波，基于所述映射关系确定的第一PRU后的子载波的序号为k’，满足如下公式：
    Figure PCTCN2022095006-appb-100002
    其中，M t表示每20MHz中参与映射的所述第一VRU的数目，M t为整数，1≤M t≤9，x为整数，x＝1,2,4,8,16，…，M t*x表示参与映射的所述第一VRU的总数目，mod()表示取余操作，M c表示一个所述第一VRU中参与映射的子载波数目，1≤M c≤26，k＝0,1,2…，M t*M c*x-1。
  14. 根据权利要求13所述的装置，其特征在于，所述第一VRU包含的子载波的索引分别为[0，1，2，…，M c-1]+n*M c；所述第一PRU包含的子载波组的索引分别为[0，1*M t*x，2*M t*x，3*M t*x，…，(M c-1)*M t*x]+n，n＝0,1,2…,M t*x-1。
  15. 一种通信装置，其特征在于，所述装置包括处理器和存储器，
    所述存储器，用于存储计算机程序或指令；
    所述处理器，用于执行存储器中的计算机程序或指令，使得权利要求1或3～7中任一项所述的方法被执行或者使得权利要求2～7任一项所述的方法被执行。
  16. 一种芯片，其特征在于，包括输入输出接口和处理电路：
    所述输入输出接口用于输入输出信息或数据，所述处理电路用于执行权利要求1或3～7中任一项所述的方法或者权利要求2～7中任一项所述的方法。
  17. 一种计算机存储介质，其特征在于，所述计算机可读存储介质存储有计算机可执行指令，所述计算机可执行指令在被计算机调用时，使所述计算机执行如权利要求1或3～7任一项所述的方法或者执行如权利要求2～7任一项所述的方法。
  18. 一种计算机程序产品，其特征在于，包含计算机可执行指令，当所述指令在计算机上运行时，使得如权利要求1或3～7中任一项所述的方法被执行；或者如权利要求2～7中任一项所述的方法被执行。
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