WO2022082792A1 - 一种信号发送、信号检测方法及装置 - Google Patents

一种信号发送、信号检测方法及装置 Download PDF

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Publication number
WO2022082792A1
WO2022082792A1 PCT/CN2020/123442 CN2020123442W WO2022082792A1 WO 2022082792 A1 WO2022082792 A1 WO 2022082792A1 CN 2020123442 W CN2020123442 W CN 2020123442W WO 2022082792 A1 WO2022082792 A1 WO 2022082792A1
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Prior art keywords
sequence
reference signal
parameter
cyclic shift
time slot
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English (en)
French (fr)
Inventor
张荻
龚名新
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN202080106029.1A priority Critical patent/CN116391337B/zh
Priority to PCT/CN2020/123442 priority patent/WO2022082792A1/zh
Priority to EP20958374.9A priority patent/EP4224961A4/en
Publication of WO2022082792A1 publication Critical patent/WO2022082792A1/zh
Priority to US18/304,528 priority patent/US12476758B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems
    • H04L27/2602Signal structure
    • H04L27/261Details of reference signals
    • H04L27/2613Structure of the reference signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/0026Interference mitigation or co-ordination of multi-user interference
    • H04J11/003Interference mitigation or co-ordination of multi-user interference at the transmitter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J11/00Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0023Interference mitigation or co-ordination
    • H04J11/005Interference mitigation or co-ordination of intercell interference
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/26Systems using multi-frequency codes
    • H04L27/2601Multicarrier modulation systems

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a method and device for signal transmission and signal detection.
  • uplink reference signals such as uplink demodulation reference signal (DMRS) and uplink sounding reference signal (SRS)
  • DMRS uplink demodulation reference signal
  • SRS uplink sounding reference signal
  • base sequence can be a sequence generated by a ZC (Zadoff-Chu) sequence, such as the ZC sequence itself, or a ZC sequence generated by cyclic shift.
  • different cyclic shift values can be used to obtain different reference signals.
  • the base station can assign different cyclic shift values to different terminal devices to ensure the orthogonality between the reference signals sent by different terminal devices, so that the reference signals sent by different terminal devices will not cause interference.
  • the interference between reference signals obtained by using the same or different cyclic shift values is not zero. That is to say, when different terminal devices in the same cell, or different terminal devices in the same cell, send reference signals based on different base sequences on the same time-frequency resource, these reference signals will interfere with each other. .
  • the purpose of the embodiments of the present application is to provide a method and apparatus for signal transmission and signal detection, so as to solve the problem of how to reduce the interference between reference signals sent by terminal equipment.
  • the present application provides a reference signal transmission method.
  • the execution body of the method is a terminal device or a module in the terminal device.
  • the terminal device is used as the execution body as an example for description.
  • the method includes: generating a sequence of reference signals; a cyclic shift value of the sequence is determined according to a first parameter and a second parameter, the first parameter is a value from 0 to Q-1, and the second parameter is 0 to Z- A value of 1, Z, Q are positive integers and Z is not equal to Q; the reference signal is sent according to the sequence.
  • the cyclic shift value of the sequence is determined according to the first parameter and the second parameter.
  • the present application provides a method for transmitting a reference signal.
  • the execution body of the method is a network device or a module in the network device.
  • the network device is used as an execution body as an example for description.
  • the method includes: generating a sequence of reference signals; a cyclic shift value of the sequence is determined according to a first parameter and a second parameter, the first parameter is a value from 0 to Q-1, and the second parameter is 0 to Z- A value in 1, Z, Q are positive integers and Z is not equal to Q; signal detection is performed according to the sequence.
  • Q is greater than Z.
  • the first parameter is determined according to a pseudo-random sequence; the pseudo-random sequence is determined according to attribute information of the reference signal.
  • the attribute information includes a sequence identifier; or, the sequence is generated according to a ZC sequence, and the attribute information includes a root index of the ZC sequence.
  • the cyclic shift value ⁇ satisfies the following formula:
  • ⁇ 1 is the first parameter
  • ⁇ 2 is the second parameter
  • t 1 is the first coefficient
  • t 2 is the second coefficient, and neither the first coefficient nor the second coefficient is equal to 0.
  • the first parameter ⁇ 1 satisfies the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device in the same system frame can be randomized, so that any two terminal devices that use different ZC sequences to determine the reference signal can be randomized in the same system frame. It can improve the performance of time-domain filtering of reference signals and improve the accuracy of channel estimation.
  • the first parameter ⁇ 1 satisfies the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device on the same frequency domain resource two or more times in a row can be randomized, so that any two terminals that use different ZC sequences to determine the reference signal can be randomized. Interference between reference signals sent by the device on the same time-frequency resource for two or more times can improve the performance of time-domain filtering of the reference signal and improve the accuracy of channel estimation.
  • the first parameter ⁇ 1 satisfies the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device in any two reference signal transmission periods can be randomized, so that the reference signals of any two terminal devices that use different ZC sequences to determine the reference signal can be randomized. Therefore, the performance of the time-domain filtering of the reference signal can be improved, and the accuracy of the channel estimation can be improved.
  • the first parameter ⁇ 1 satisfies the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device on any two or more symbols can be randomized, so that any two terminal devices that use different ZC sequences to determine the reference signal can be randomized in any Interference between reference signals sent on two or more symbols can improve the performance of time-domain filtering of the reference signals and improve the accuracy of channel estimation.
  • the first parameter is determined according to the first cyclic shift interval
  • the first cyclic shift interval is determined from the first pattern according to the information of the first time unit, and the first pattern includes Y cyclic shift interval, Y is an integer greater than 1
  • the first parameter is determined according to the first cyclic shift step size and the information of the first time unit; or, the first parameter is determined according to the first initial cyclic shift
  • the step size, the first cyclic shift step size difference and the information of the first time unit are determined;
  • the information of the first time unit includes the system frame number where the first time unit is located, and/or the time slot where the first time unit is located is The time slot number in the current system frame; the first time unit is the time unit where the reference signal is located.
  • the cyclic shift value ⁇ is determined according to ⁇ , where ⁇ satisfies the following formula:
  • mod is the modulo operation.
  • the difference between the cyclic shift values used when any two terminal equipments in the cell determine the reference signal can be randomized. Further, interference between reference signals sent between terminal devices can be reduced, the effect of interference randomization can be realized, and the channel time-domain filtering performance can be improved.
  • the cyclic shift value ⁇ is determined according to ⁇ , where ⁇ satisfies the following formula:
  • ⁇ hopping is the first cyclic shift step size; is the first parameter, ⁇ 2 is the second parameter, is the number of time slots in a system frame; n f is the number of the system frame where the reference signal is located; is the time slot number of the time slot where the reference signal is located in the current system frame; L is an integer; T S is the sending period of the reference signal; Z is a positive integer; For the round-down operation, mod is the modulo operation.
  • the cyclic shift value ⁇ is determined according to ⁇ . , where ⁇ satisfies the following formula:
  • ⁇ 2 is the second parameter, is the number of time slots in a system frame
  • n f is the number of the system frame where the reference signal is located
  • ⁇ h gap is the first cyclic shift step difference
  • T S is the reference signal send cycle
  • mod is the modulo operation.
  • Z is is the maximum cyclic shift value.
  • Q is the sequence length of the reference signal, or Q is the number of subcarriers occupied by the reference signal.
  • the present application provides a reference signal transmission method.
  • the execution body of the method is a terminal device or a module in the terminal device.
  • the terminal device is used as an execution body as an example for description.
  • the method includes: generating a sequence of reference signals; at least two of a cyclic shift value, a sequence group number, and a sequence number of the sequence are determined according to a pseudo-random sequence; and sending a reference signal according to the sequence.
  • the present application provides a method for transmitting a reference signal.
  • the execution body of the method is a network device or a module in the network device.
  • the network device is used as an execution body as an example for description.
  • the method includes: generating a sequence of reference signals; at least two of a cyclic shift value, a sequence group number, and a sequence number of the sequence are determined according to a pseudo-random sequence; and signal detection is performed according to the sequence.
  • At least two of the cyclic shift value, the sequence group number, and the sequence number are determined according to the pseudo-random sequence, and the cyclic shift value, the sequence group number, and the sequence number can be determined in an effective randomization, so that the randomization can be effectively performed. Interference between reference signals, thereby improving the accuracy of channel estimation.
  • Q is greater than Z.
  • the pseudo-random sequence is determined according to attribute information of the reference signal.
  • the attribute information includes a sequence identifier; or, the sequence is generated according to a ZC sequence, and the attribute information includes a root index of the ZC sequence.
  • the cyclic shift value ⁇ satisfies the following formula:
  • ⁇ 1 is the first parameter
  • ⁇ 2 is the second parameter
  • t 1 is the first coefficient
  • t 2 is the second coefficient, and neither the first coefficient nor the second coefficient is equal to 0.
  • the first parameter ⁇ 1 satisfies the following formula:
  • Q is a positive integer
  • T is a positive integer
  • n f is the system frame number where the reference signal is located, is the number of time slots in a system frame
  • n S is the count value of the reference signal counter
  • T S is the sending period of the reference signal
  • c( ) is the pseudo-random sequence
  • mod is the modulo operation.
  • the cyclic shift value ⁇ satisfies the following formula:
  • Z is is the maximum cyclic shift value.
  • the sequence group number u satisfies the following formula:
  • the serial number v satisfies the following formula:
  • Q is the sequence length of the reference signal, or Q is the number of subcarriers occupied by the reference signal.
  • the present application further provides a communication device, the communication device having any of the methods provided in any one of the above-mentioned first to fourth aspects.
  • the communication apparatus may be a network device or a terminal device.
  • the communication device may be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication apparatus includes: a processor configured to support the communication apparatus to perform the corresponding functions in the above-described method.
  • the communication device may also include a memory, which may be coupled to the processor, which holds program instructions and data necessary for the communication device.
  • the communication apparatus further includes a communication interface, where the communication interface is used to support communication between the communication apparatus and other devices.
  • the communication device includes corresponding functional modules, which are respectively used to implement the steps in the above method.
  • the functions can be implemented by hardware, or by executing corresponding software by hardware.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the structure of the communication apparatus includes a processing unit and a communication unit, and these units can perform the corresponding functions in the above method examples.
  • these units can perform the corresponding functions in the above method examples.
  • the description of the method provided in the first aspect which is not repeated here.
  • a communication device comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to implement the method in the first aspect or any possible implementation manner of any of the foregoing aspects through logic circuits or executing code instructions.
  • a communication device comprising a processor and an interface circuit
  • the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to implement the functional modules of the method in the second aspect and any possible implementation manner of the second aspect through logic circuits or executing code instructions.
  • a communication device comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to implement the functional modules of the third aspect and the method in any possible implementation manner of the third aspect through logic circuits or executing code instructions.
  • a communication device comprising a processor and an interface circuit, the interface circuit is configured to receive signals from other communication devices other than the communication device and transmit to the processor or send signals from the processor
  • the processor is used to implement the functional modules of the method in the fourth aspect and any possible implementation manner of the fourth aspect through logic circuits or executing code instructions.
  • a computer-readable storage medium is provided, and a computer program or instruction is stored in the computer-readable storage medium.
  • the computer program or instruction is executed by a processor, the aforementioned first aspect or third aspect or A method of any of the fifth or seventh aspects, and any possible implementation of any of the aspects.
  • a computer program product comprising instructions that, when executed by a processor, implement any of the foregoing first to fourth aspects, and any possible implementation manner of any aspect Methods.
  • a twelfth aspect provides a chip system, the chip system includes a processor, and may further include a memory, for implementing any one of the foregoing first to fourth aspects, and any possible implementation manner of any aspect. Methods.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • a thirteenth aspect provides a communication system, where the system includes the apparatus of the sixth aspect (eg, terminal equipment) and the apparatus of the seventh aspect (eg, network equipment).
  • the apparatus of the sixth aspect eg, terminal equipment
  • the apparatus of the seventh aspect eg, network equipment
  • a fourteenth aspect provides a communication system, where the system includes the apparatus (eg, terminal device) described in the eighth aspect and the apparatus (eg, network device) described in the ninth aspect.
  • FIG. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a signal transmission method provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a signal provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a signal transmission method provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the embodiments of the present application may be applied to various mobile communication systems, for example, a new radio (new radio, NR) system, a long term evolution (long term evolution, LTE) system, an advanced long term evolution (advanced long term evolution, LTE-A) System, universal mobile telecommunication system (UMTS), evolved long term evolution (evolved long term evolution, eLTE) system, future communication system and other communication systems, which are not limited here.
  • a new radio new radio
  • NR new radio
  • LTE long term evolution
  • LTE-A advanced long term evolution
  • UMTS universal mobile telecommunication system
  • eLTE evolved long term evolution
  • future communication system for example, a new radio (new radio, NR) system, a long term evolution (long term evolution, LTE) system, an advanced long term evolution (advanced long term evolution, LTE-A) System, universal mobile telecommunication system (UMTS), evolved long term evolution (evolved long term evolution, eLTE) system, future
  • the terminal device may be a device with a wireless transceiver function or a chip that can be installed in any device, and may also be referred to as user equipment (user equipment, UE), an access terminal, a subscriber unit, or a subscriber station. , mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user equipment.
  • user equipment user equipment
  • UE user equipment
  • access terminal a subscriber unit
  • subscriber station mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent or user equipment.
  • the terminal device in this embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (VR) terminal, an augmented reality (AR) terminal, an industrial Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • a mobile phone mobile phone
  • a tablet computer (Pad)
  • a computer with a wireless transceiver function a virtual reality (VR) terminal, an augmented reality (AR) terminal
  • an industrial Wireless terminal in industrial control wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety Wireless terminals in smart cities, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • Network equipment which can be wireless access equipment under various standards, such as evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC) or Node B (Node B, NB), base station control controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity ( The access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc.
  • eNB evolved Node B
  • RNC radio network controller
  • Node B Node B
  • BSC base station control controller
  • base transceiver station base transceiver station
  • BTS home base station
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • baseband unit baseband unit, BBU
  • wireless fidelity The access point (
  • WIFI wireless fidelity
  • the gNB or transmission point (TRP or TP) in the NR) system one or a group (including multiple antenna panels) antenna panels of the base station in the 5G system, or, it can also be a network node that constitutes a gNB or transmission point, such as Baseband unit, or DU under a centralized-distributed (central unit-distributed, CU-DU) architecture, etc.
  • FIG. 1 is a schematic diagram of a network architecture to which an embodiment of the present application is applied.
  • a terminal device can access a network device to obtain services from an external network (such as a data network (DN)) through the network device, or communicate with other devices through the network device, such as with other terminals device communication.
  • an external network such as a data network (DN)
  • DN data network
  • the terminal device can send a reference signal to the network device, and the network device can then perform operations such as estimating channel quality based on the reference signal.
  • the reference signals include, but are not limited to, DMRS, SRS, and the like.
  • the sequence r u,v (n) of the SRS of length M can be composed of the base sequence Generated by the following formula:
  • N ZC is the base sequence
  • is the cyclic shift value, which is configured by the network device
  • q is the root index
  • j is the imaginary unit.
  • u is the serial group number
  • base sequence It can be a sequence generated by a ZC sequence, for example, a ZC sequence itself, or a sequence generated by a ZC sequence through cyclic shift.
  • the length M of various SRS sequences is determined, and for each value of M greater than or equal to 72, 60 base sequences are respectively defined, among which, these The 60 base sequences are generated from ZC sequences with the same length and different root indices.
  • a maximum prime number N ZC less than or equal to M is determined as the length of the ZC sequence for generating the SRS sequence.
  • Table 1 The relationship between the root indices of these ZC sequences and the group numbers of the base sequences can be referred to as shown in Table 1:
  • different base sequences correspond to the values of the roots of different ZC sequences, that is, the values of the roots of the base sequences and the ZC sequences are in one-to-one correspondence.
  • the cyclic shift value is configured by the network device.
  • different SRS sequences can be obtained by using different cyclic shift values ⁇ . If there are two cyclic shift values ⁇ 1 and ⁇ 2 , when ⁇ 1 and ⁇ 2 satisfy ⁇ 1 mod 2 ⁇ 2 mod 2 ⁇ , the sequence x 1 (m) obtained from the base sequences r(m) and ⁇ 1 , and the sequence x 2 (m) obtained from the base sequences r(m) and ⁇ 2 are mutually orthogonal, that is, the cross-correlation coefficient is zero.
  • the cross-correlation coefficient is defined as:
  • the SRS sequences obtained based on the same base sequence and different cyclic shift values ⁇ can be allocated to different terminal devices, and these terminal devices can send these SRS sequences based on the same base sequence on the same time-frequency resource.
  • the interference between SRS sequences obtained by using the same or different cyclic shift values ⁇ is not zero. That is to say, the SRS sequences obtained based on the same or different cyclic shift values of different base sequences are allocated to different terminal devices, and these terminal devices can send these cyclic shifts generated based on different base sequences on the same time-frequency resource.
  • the channel of the terminal device is flat within the length of the SRS sequence, these SRS sequences will cause interference between the terminal devices.
  • two cells correspond to two base sequences respectively, there are two terminal devices in each cell, and two terminal devices in each cell use two different cyclic shift values of the same base sequence , there are 4 terminal devices UE1 to UE4 that can send SRS on the same time-frequency resource.
  • UE1 base sequence 1
  • alpha 1 UE2 base sequence 1
  • alpha 2 UE3 base sequence 2
  • alpha 3 UE4 base sequence 2
  • the channel estimation uses time domain filtering, that is to say, weighted average is performed on the adjacent SRS channel estimation results to improve the accuracy of channel estimation.
  • time domain filtering that is to say, weighted average is performed on the adjacent SRS channel estimation results to improve the accuracy of channel estimation.
  • UE1 and UE2 use two different cyclic shifts ⁇ 1 and ⁇ 2 of base sequence s 1 for channel estimation
  • UE3 and UE4 use base sequence s 2
  • Channel estimation is performed with two different cyclic shifts ⁇ 3 and ⁇ 4 of , and it is assumed that the channels of the four terminal equipments are flat on the M subcarriers of the SRS sequence and are respectively h 1 , h 2 , h 3 and h 4 .
  • the signal y(k) received by the network device is:
  • the network equipment correlates the received signal with the SRS sequence used by the UE:
  • the interference value between the SRS sequences of the two terminal equipments is determined by the cyclic shift difference between the two SRS sequences.
  • the interference cannot be randomized. This causes the SRS interference between cells to increase, which in turn leads to a decrease in the channel estimation accuracy of the cell edge terminal equipment.
  • the SRS interference in the cell will also increase, which in turn leads to a decrease in the channel estimation accuracy of the two terminal devices.
  • the cyclic shift value is determined in a random manner, so as to achieve randomization of interference between reference signals, thereby improving the accuracy of channel estimation, which will be described in detail below.
  • the time slot number is the time slot number in the system frame of the time slot where the reference signal is located, and the time slot number is related to the subcarrier spacing. For example, when the subcarrier spacing is 15 kHz, the time slot number is an integer from 0 to 9; ⁇ is The configuration value of the subcarrier spacing is in one-to-one correspondence with the size of the subcarrier spacing;
  • OFDM orthogonal frequency division multiplexing
  • R is a reference signal repetition factor (repetition factor), which is determined according to a predefined rule and/or the configuration information of the network device.
  • B is a preset integer, or an integer determined according to a predefined rule and/or configuration information of a network device. For the round-down operation, mod is the modulo operation.
  • a reference signal resource includes one or more antenna ports, each antenna port may correspond to a sequence, and each sequence may be generated according to the methods of the embodiments of the present application, and then the generated sequence includes multiple antenna ports.
  • Reference signal for the antenna port For example: an SRS resource includes antenna ports, corresponding to a total of a sequence.
  • one reference signal resource includes one or more antenna ports. Different antenna ports in a reference signal resource can occupy exactly the same symbols, and are complexed with each other by frequency division (occupying different subcarriers) or code division (using different ZC sequences or different cyclic shifts of the same sequence). use.
  • the embodiments of the present application do not limit this.
  • there is a correspondence between the reference signal resources and the reference signals please refer to the description in the existing standard. Further, in some scenarios, the reference signal resource and the reference signal may be equivalent.
  • the sequence used by the SRS corresponding to one reference signal resource in each OFDM symbol may be different or the same, which is specifically determined by the reference signal sequence generation formula.
  • the SRS corresponding to one reference signal resource may use different sequences in each OFDM symbol to achieve the purpose of randomizing interference.
  • the method for generating a sequence of reference signals in the process of FIG. 4 can also realize that the SRS corresponding to one reference signal resource can use different sequences in each OFDM symbol, so as to achieve the purpose of randomizing interference.
  • the network architecture and service scenarios described in the embodiments of the present application are for the purpose of illustrating the technical solutions of the embodiments of the present application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application.
  • the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 2 a schematic flowchart of a method provided by an embodiment of the present application is shown. Referring to Figure 2, the method includes:
  • Step 201 Generate a sequence of reference signals.
  • the cyclic shift value of the sequence is determined according to a first parameter and a second parameter, the first parameter is a value from 0 to Q-1, and the second parameter is a value from 0 to Z-1 value, the Z, Q are positive integers and Z is not equal to Q. In one possible implementation, Q is greater than Z.
  • Step 202 Send a reference signal according to the sequence.
  • the reference signal may be an uplink sounding reference signal (SRS), an uplink demodulation reference signal (DMRS), a phase tracking signal, and the like.
  • SRS uplink sounding reference signal
  • DMRS uplink demodulation reference signal
  • phase tracking signal and the like.
  • sequence of the reference signal may refer to a bit sequence of a certain length
  • the terminal device may perform operations such as modulation on the sequence to obtain a corresponding wireless signal, which may be referred to as a reference signal. Therefore, in some cases, the sequence of the reference signal and the reference signal may be considered to be equivalent.
  • Steps 201 to 202 may be performed by the terminal device.
  • Step 203 Generate a sequence of reference signals.
  • Step 204 Perform signal detection according to the sequence.
  • Steps 203 to 204 may be performed by the network device, wherein the specific implementation manner of the network device generating the sequence of reference signals may be the same as the implementation manner in step 201, and details are not described herein again.
  • terminal device and the network device specifically generate the sequence of the reference signal, and the process of generating the sequence of the reference signal, are not limited in the embodiments of the present application, and will not be repeated here.
  • the network device performs detection is not limited in this embodiment of the present application, and details are not described herein again.
  • the cyclic shift value of the sequence is determined according to the first parameter and the second parameter.
  • the difference between the cyclic shift values used when any two terminal devices determine the reference signal can be randomized. value. Further, it is possible to reduce the interference between the reference signals generated by the cyclic shift values obtained by the method between the terminal devices, realize the effect of interference randomization, and improve the channel time-domain filtering performance.
  • the two terminal devices UE5 and UE6 For example, taking the reference signal as SRS as an example, as shown in FIG. 3 and Table 3, two terminal devices UE5 and UE6, UE5 is located in cell 1, UE6 is located in cell 2, and the two SRS resources corresponding to UE5 and UE6 correspond to Two base sequences, and each SRS resource occupies 4 symbols (symbol 10, symbol 11, symbol 12, and symbol 13) in one time slot, the two terminal devices send SRS on the same time-frequency resource, according to this
  • the corresponding relationship between the symbol and the cyclic shift value can be referred to as shown in Table 3.
  • Table 3 the cyclic shift values of the SRS corresponding to the two terminal devices on the 4 symbols are different, that is to say The interference experienced on the 4 symbols is different. If the channel estimation uses time domain filtering, that is, if the 4 times SRS channel estimation results on symbols 10, 11, 12, and 13 are weighted and averaged, it can be seen from the foregoing description that the accuracy of channel estimation can be effectively
  • steps 201 to 202 and steps 203 to 204 may be implemented separately. That is, from the perspective of the terminal device, in the above method process, only steps 201 to 202 may be performed, and from the perspective of the network device, in the above method process, only steps 203 to 204 may be performed.
  • the cyclic shift value ⁇ may satisfy the following formula:
  • both the first coefficient and the second coefficient are equal to one.
  • the first coefficient and the second coefficient are both equal to 1/2.
  • the first coefficient is equal to 2/3 and the second coefficient is both equal to 1/3.
  • the first coefficient and the second coefficient may be preset values, or may be configured by network devices, which are not limited in this application. In this embodiment of the present application, Z may be predefined, or configured by a network device, or determined according to other parameters configured by the network device.
  • Z can be equal to is the maximum cyclic shift value, and the maximum cyclic shift value may refer to the maximum value of the cyclic shift.
  • Q is the sequence length of the reference signal, or Q is the number of subcarriers occupied by the reference signal.
  • the second parameter ⁇ 2 may satisfy the following formula:
  • the K is determined according to configuration information, and the configuration information may be sent by the network device to the terminal device.
  • K TC can be called transmission comb value
  • K TC is configured by the network device
  • p is the number of the antenna ports occupied by the reference signal.
  • an SRS resource includes A sequence of antenna ports can be generated by bringing each antenna port number into p in the above formula, so for a sequence including The SRS resources of the antenna ports can be generated according to the methods of the embodiments of the present application a sequence.
  • the first parameter may be determined according to a pseudo-random sequence, and the specific number may be implemented in multiple ways.
  • the first method the first parameter ⁇ 1 can satisfy the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device in the same system frame can be randomized, so that any two terminal devices that use different ZC sequences to determine the reference signal can be randomized in the same system frame. It can improve the performance of time-domain filtering of reference signals and improve the accuracy of channel estimation.
  • the second method the first parameter ⁇ 1 can satisfy the following formula:
  • n S in formula (6) can satisfy the following formula:
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device on the same frequency domain resource two or more times in a row can be randomized, so that any two terminals that use different ZC sequences to determine the reference signal can be randomized. Interference between reference signals sent by the device on the same time-frequency resource for two or more times can improve the performance of time-domain filtering of the reference signal and improve the accuracy of channel estimation.
  • the third method the first parameter ⁇ 1 satisfies the following formula:
  • L is an integer, and L can be determined according to a predetermined method and/or configuration information of the network device.
  • L can be equal to the time slot offset value T offset of the reference signal; T is a positive integer; c( ⁇ ) is the pseudo-random sequence.
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device in any two reference signal transmission periods can be randomized, so that the reference signals of any two terminal devices that use different ZC sequences to determine the reference signal can be randomized. Therefore, the performance of the time-domain filtering of the reference signal can be improved, and the accuracy of the channel estimation can be improved.
  • the fourth method the first parameter ⁇ 1 satisfies the following formula:
  • T is a positive integer
  • S is a positive integer, for example, S is the number of OFDM symbols in a time slot, that is, c( ⁇ ) is the pseudorandom sequence.
  • the cyclic shift value of the sequence of the reference signal sent by the terminal device on any two or more symbols can be randomized, so that any two terminal devices that use different ZC sequences to determine the reference signal can be randomized in any Interference between reference signals sent on two or more symbols can improve the performance of time-domain filtering of the reference signals and improve the accuracy of channel estimation.
  • the pseudo random sequence is determined according to the attribute information of the reference signal, or is determined according to the attribute information of the terminal device.
  • pseudorandom sequence c( ) can satisfy the following form:
  • x 1 (n+31) (x 1 (n+3)+x 1 (n))mod 2 ... (13)
  • x 2 (n+31) (x 2 (n+3)+x 2 (n+2)+x 2 (n+1)+x 2 (n))mod 2
  • the attribute information of the reference signal or the attribute information of the terminal device can be used to determine the initial seed parameter of the pseudo-random sequence, thereby generating the corresponding pseudo-random sequence, which will be described separately below.
  • the attribute information of the reference signal may include a root index for determining the ZC sequence used by the reference signal; the attribute information may also include the sequence identifier of the reference signal.
  • the attribute information of a terminal device may specifically be a feature used to characterize a terminal device that is different from other terminal devices, or a feature shared by a group of terminal devices but different from other terminal devices, for example, it may include identification information of the terminal device.
  • the attribute information includes the root index q of the ZC sequence used for determining the reference signal.
  • the values of f 1 (q) obtained from different root indices q are different.
  • the value of c init of the terminal equipment that uses the same ZC sequence to generate the sequence of the reference signal is the same, and the value of c init of the terminal equipment that uses different ZC sequences to generate the sequence of the reference signal is the same.
  • the value of c init is different.
  • c init q+K c1
  • c init q, that is, the initial seed parameter c init is equal to the root index q. Other situations will not be repeated.
  • the attribute information includes a sequence identifier.
  • the values of f 2 (n ID ) obtained from different sequence identifiers n ID are different.
  • the sequence identifiers of different reference signals are different, the value of c init of the terminal equipment using the same reference signal is the same, and the value of c init of the terminal equipment using different reference signals is different.
  • the reference signal corresponds to the reference signal resource
  • the network device can configure various parameters for the reference signal resource, one of which is the sequence identifier described above, that is, the sequence identifier n ID in the embodiment of the present application is Refers to the sequence identifier of the reference signal resource.
  • c init n ID +K c2
  • different terminal equipments can be configured with different sequence identifiers n IDs so that the cyclic shift hopping patterns of the reference signals sent by different terminal equipments are different, so as to achieve the effect of randomization of interference.
  • the attribute information of the terminal device may include identification information of the terminal device.
  • the identification information can be a terminal device-specific identification information, for example, the identification information can be the cell radio network temporary identity (C-RNTI) of the terminal device, or the international mobile subscriber identity (international mobile subscriber) of the terminal device. identity, IMSI), and can also be a temporary mobile station identifier (temporary mobile station identifier, TMSI) of the terminal device, etc.
  • C-RNTI cell radio network temporary identity
  • IMSI international mobile subscriber identity
  • TMSI temporary mobile station identifier
  • the identification information may also be identification information shared by a group of terminal devices, which is not limited in this application.
  • the identification information of the terminal device The following relationship can be satisfied with the initial seed parameter c init : by different identification information owned value is different. Wherein, since the identification information of different terminal devices is different, the values of c init of the terminal devices using different identification information are different.
  • the first parameter is determined according to the pseudo-random sequence.
  • the first parameter may also be determined according to other methods, which will be described in detail below.
  • the first cyclic shift interval is determined from the first pattern according to the information of the first time unit, and the first pattern includes Y cyclic shift intervals.
  • the first pattern is [ ⁇ 0 , ⁇ 1 , ⁇ 2 ,..., ⁇ Y-1 ], Y is an integer greater than 1.
  • Each cyclic shift interval included in the first pattern is an integer.
  • the first pattern may be determined from X patterns, where X is a positive integer.
  • the first time unit is a time unit for sending the reference signal.
  • the first pattern may be determined from X patterns according to the first indication information; the first indication information may be sent by the network device to the terminal device.
  • the Y cyclic shift intervals included in the first pattern may be predefined integers.
  • X patterns may be pre-defined, X is a positive integer, each pattern in the X patterns includes Y cyclic shift intervals, the network device may send the first indication information to the terminal device, the first An indication information is used to indicate one pattern among the X patterns, and the terminal device may determine the first pattern from the X patterns according to the first indication information.
  • the Y cyclic shift intervals included in the x th pattern in the predefined X patterns are:
  • the yth cyclic shift interval of the first pattern When the second indication information indicates that the first pattern is the xth pattern in the X patterns, the yth cyclic shift interval of the first pattern
  • the X patterns can be any X patterns that satisfy the following conditions:
  • Condition 1 For all non-negative integers i and j, is any value in the set ⁇ 0,1,...,Q-1 ⁇ .
  • the value of and The value of can be determined by the terminal device according to predefined rules and/or network device configuration information, where Can be any value in the set ⁇ 0,1,...,Q-1 ⁇ , different x corresponds to The value of can be the same or different, which is not limited in this embodiment of the present application. Exemplary,
  • the value of is an integer that satisfies the second condition and belongs to the set ⁇ 0,1,...,Q-1 ⁇ .
  • Terminal equipment can be based on The value of , and is determined according to condition 3 value of .
  • the terminal device can be based on the value of and value to determine value of . specific, The value of satisfies the following formula:
  • the X patterns may be:
  • terminal devices that transmit reference signals on the same time-frequency resource can be divided into G groups according to the base sequence of the sequence for generating the reference signal, where G is the number of base sequences, and the terminal devices belonging to the same group use the same base sequence to generate the reference signal.
  • Signal sequence, terminal devices belonging to different groups use different base sequences to generate reference signal sequences, and the network device can configure different cyclic shift hopping patterns for these G groups of terminal devices, that is, different values of x.
  • the same cyclic shift hopping pattern that is, the same value of x
  • the terminal equipment that uses the same base sequence to determine the reference signal
  • different cyclic shifts for the terminal equipment that uses different base sequences to determine the reference signal
  • the pattern of that is, the different values of x.
  • G is less than or equal to Q
  • the difference between the cyclic shifts of the reference signals sent by any two terminal devices belonging to different groups in the G group of terminal devices on any two adjacent same-frequency domain resources is different. That is to say, the interference between the reference signals between any two terminal devices that generate reference signal sequences based on different base sequences can be randomized, so that the channel measurement accuracy can be improved.
  • ⁇ hopping is the first cyclic shift step size; is the first parameter.
  • the first cyclic shift step size is determined from the Q cyclic shift step sizes.
  • the network device may send second indication information to the terminal device, where the second indication information is used to indicate the first cyclic shift step size.
  • the terminal device can thus determine the first cyclic shift step size according to the second indication information.
  • the network device pre-configures Q cyclic shift steps to the terminal device, and the second indication information is used to indicate one cyclic shift step in the Q cyclic shift steps, for example, the second indication information may be
  • the terminal device may determine the first cyclic shift step size according to the second indication information.
  • the terminal equipment that transmits the reference signal on the same time-frequency resource can be divided into G groups according to the base sequence of the sequence for generating the reference signal, where G is the number of base sequences, and the terminal equipment belonging to the same group uses the same base sequence to generate the reference signal. Signal sequence. Terminal devices belonging to different groups use different base sequences to generate reference signal sequences.
  • the network device can configure different ⁇ hopping values for the G group of terminal devices. That is to say, the same value of ⁇ hopping is configured for terminal equipments that use the same base sequence to determine the reference signal, and different values of ⁇ hopping are configured for the terminal equipments that use different base sequences to determine the reference signal.
  • the difference between the cyclic shifts of the reference signals sent by any two terminal equipments belonging to different groups in the G group of terminal equipments on any two adjacent same-frequency domain resources can be different, so as to realize
  • the interference between the reference signals between any two terminal equipments that generate reference signal sequences based on different base sequences is randomized, so that the channel measurement accuracy can be improved.
  • the seventh method the first parameter is determined according to the first initial cyclic shift step size, the first cyclic shift step size difference, and the information of the first time unit, and the first time unit may be an OFDM symbol, so
  • the first parameter is determined according to the first initial cyclic shift step size, the first cyclic shift step size difference, and the information of the first time unit, where the first time unit is an OFDM symbol, and the first time unit is an OFDM symbol.
  • the information of a time unit includes the number of the system frame where the first time unit is located, the time slot number of the time slot where the first time unit is located in the current system frame, and the number of the first time unit in the reference signal resource.
  • the network device sends third indication information to the terminal device, and indicates the first initial cyclic shift step size to the terminal device through the third indication information.
  • the network device preconfigures Q initial cyclic shift steps, and the third indication information is used to indicate one initial cyclic shift step among the Q initial cyclic shift steps, so that the terminal device can follow the third instruction
  • the information determines a first initial cyclic shift step size from among the Q initial cyclic shift steps.
  • the network device may also send fourth indication information to the terminal device, and indicate the first cyclic shift step difference to the terminal device through the fourth indication information.
  • the network device preconfigures Q first cyclic shift step differences, and the fourth indication information is used to indicate one first cyclic shift step difference among the Q first cyclic shift step differences, and the terminal device Therefore, the first cyclic shift step difference can be determined from the Q first cyclic shift step differences according to the fourth indication information.
  • terminal devices that transmit reference signals on the same time-frequency resource can be divided into G groups according to the base sequence of the sequence for generating the reference signal, where G is the number of base sequences, and the terminal devices belonging to the same group use the same base sequence to generate the reference signal.
  • Signal sequence, terminal devices belonging to different groups use different base sequences to generate reference signal sequences, and the network device can configure different initial cyclic shift step sizes and/or different cyclic shift step size differences for these G groups of terminal devices.
  • the same initial cyclic shift step size and cyclic shift step difference for the terminal equipment that uses the same base sequence to determine the reference signal and configure different initial cyclic shifts for the terminal equipment that uses different base sequences to determine the reference signal Step size and/or different cyclic shift step size differences.
  • G is less than or equal to Q
  • the difference between the cyclic shifts of the reference signals sent by any two terminal devices belonging to different groups in the G group of terminal devices on any two adjacent same-frequency domain resources is different. That is to say, the interference between the reference signals between any two terminal devices that generate reference signal sequences based on different base sequences can be randomized, so that the channel measurement accuracy can be improved.
  • the first time unit may be a time slot, may be an OFDM symbol, or may be a time unit such as a subframe or a system frame.
  • the information of the first time unit includes at least one of the following items: the system frame number where the first time unit is located, the time slot number of the time slot where the first time unit is located in the current system frame, the first time The symbol number in the current slot of the symbol where the unit is located. Specifically, it can include the following situations:
  • the first time unit is a subframe, and the information of the first time unit includes the system frame number where the first time unit is located;
  • the first time unit is a time slot, and the information of the first time unit includes the system frame number where the first time unit is located, and/or the time slot number of the first time unit (ie, a time slot) in the current system frame ;
  • the first time unit is an OFDM symbol
  • the information of the first time unit includes the system frame number where the first time unit is located, and/or the time slot number of the time slot where the first time unit is located in the current system frame, and/or Or the symbol number of the first time unit (ie, one symbol) in the current slot.
  • the first time unit is an OFDM symbol
  • the information of the first time unit includes the system frame number where the first time unit is located, and/or the time slot number of the time slot where the first time unit is located in the current system frame, and/or or the symbol number of the first time unit (ie, one symbol) in the current time slot, and/or the symbol number of the first time unit (ie, one symbol) in the current reference signal resource.
  • the terminal equipment can use different cyclic shift values at different reference signal measurement moments, so that the sequence of the reference signal can be generated by arbitrarily using different base sequences.
  • the cyclic shift difference between the two users can change at each reference signal measurement time, that is, the channel estimation errors of adjacent several times are different, so as to randomize the sequence of reference signals generated based on different base sequences
  • the purpose of the interference between them is to improve the accuracy of channel estimation.
  • sequence of reference signals may also be generated in other manners, so as to randomize the interference between the reference signals and improve the accuracy of channel estimation, which will be described in detail below.
  • FIG. 4 a schematic flowchart of a method provided by an embodiment of the present application is shown. Referring to Figure 4, the method includes:
  • Step 401 Generate a sequence of reference signals; at least two of the cyclic shift value, the sequence group number and the sequence number of the sequence are determined according to the pseudo-random sequence.
  • Step 402 Send a reference signal according to the sequence.
  • the reference signal may be an uplink sounding reference signal (SRS), an uplink demodulation reference signal (DMRS), a phase tracking signal, and the like.
  • SRS uplink sounding reference signal
  • DMRS uplink demodulation reference signal
  • phase tracking signal and the like.
  • Steps 401 to 402 may be performed by the terminal device.
  • Step 403 Generate a sequence of reference signals.
  • Step 404 Perform signal detection according to the sequence.
  • Steps 403 to 404 may be performed by the network device, wherein the specific implementation of the sequence of generating the reference signal by the network device may be the same as the implementation in step 401, and will not be repeated here.
  • terminal device and the network device specifically generate the sequence of the reference signal, and the process of generating the sequence of the reference signal, are not limited in the embodiments of the present application, and will not be repeated here.
  • the network device performs detection is not limited in this embodiment of the present application, and details are not described herein again.
  • the specific form of the pseudo-random sequence is not limited in the embodiment of the present application, for example, the pseudo-random sequence described in formula (13) may be referred to.
  • the pseudo-random sequence may be determined according to attribute information of the reference signal or attribute information of the terminal device.
  • the initial seed parameter of the pseudo-random sequence may be determined according to attribute information of the reference signal or attribute information of the terminal device. For details, reference may be made to the foregoing description, which will not be repeated here.
  • Scenario 1 The cyclic shift value, the sequence group number, and the sequence number are determined according to the pseudo-random sequence.
  • the cyclic shift value ⁇ can satisfy the previous formulas (1) and (2):
  • ⁇ 1 is a first parameter
  • ⁇ 2 is a second parameter
  • t 1 is a first coefficient
  • t 2 is a second coefficient
  • both the first coefficient and the second coefficient are greater than 0.
  • first parameter ⁇ 1 can satisfy the foregoing formula (4), formula (6), formula (9) and formula (11).
  • the second parameter ⁇ 2 may satisfy the previous formula (3).
  • the cyclic shift value ⁇ can satisfy the following formula:
  • sequence group number u can satisfy the following formula:
  • W, A, and T are integers; the values of W and A can be preset, configured by network equipment, or determined in other ways.
  • A can be the sequence identifier n ID of the reference signal, W may be equal to 30; the value range of n ID may be ⁇ 0,1,...,1023 ⁇ or ⁇ 0,1,...,65535 ⁇ , and c( ⁇ ) is the pseudo-random sequence.
  • E and T are positive integers; the value of E can be preset or determined in other ways, for example, is the number of subcarriers occupied by a resource block.
  • Q can be the number of subcarriers occupied by the reference signal E.g,
  • Scenario 2 The cyclic shift value and the sequence group number are determined according to the pseudo-random sequence, and the sequence number is not determined according to the pseudo-random sequence.
  • the cyclic shift value can satisfy any one of the preceding formula (1), formula (2), and formula (19) to (22); the serial group number can satisfy the preceding formula (23) or formula (twenty four).
  • Scenario 3 The cyclic shift value and the sequence number are determined according to the pseudo-random sequence, and the sequence group number is not determined according to the pseudo-random sequence.
  • the cyclic shift value can satisfy any one of the preceding formula (1), formula (2), and formula (19) to (22); the serial number can satisfy the preceding formula (25) or formula ( 26).
  • Scenario 4 The sequence group number and the sequence number are determined according to the pseudo-random sequence, and the cyclic shift value is not determined according to the pseudo-random sequence.
  • the serial group number can satisfy the preceding formula (23) or formula (24); the serial number can satisfy the preceding formula (25) or formula (26).
  • the cyclic shift value ⁇ can satisfy the following formula:
  • n CS is configured by higher layer signaling.
  • n CS,max is determined according to the high-level signaling configuration information.
  • sequence group number u is determined according to the pseudo-random sequence, it can be determined by the following formula:
  • sequence group number u is determined according to the pseudo-random sequence, it can be determined by the following formula:
  • the sequence of the reference signal can be hopped in the time domain, that is, Implementing at least two modes of SRS sequence group hopping, sequence hopping, and cyclic shift hopping can effectively randomize SRS inter-sequence interference, thereby improving channel estimation accuracy.
  • the reference signal can be effectively randomized inter-interference, thereby improving the accuracy of channel estimation.
  • the sequence r u,v (n) of the SRS of length M can be composed of the base sequence Generated by the following formula:
  • N ZC is the base sequence The length of ; ⁇ is the cyclic shift value, u is the sequence group number, and v is the sequence number. j is an imaginary unit.
  • base sequence It can be a sequence generated by a ZC sequence, for example, a ZC sequence itself, or a sequence generated by a ZC sequence through cyclic shift.
  • the network device or the terminal device 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 functions is performed 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.
  • each functional module in each embodiment of the present application may be integrated into one processor, or may exist physically alone, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules.
  • an embodiment of the present application further provides an apparatus 500 for implementing the functions of the network device or the terminal device in the above method.
  • the apparatus may be a software module or a system-on-chip.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 500 may include: a processing unit 501 and a communication unit 502 .
  • the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, which are respectively configured to perform the sending and receiving steps of the network device or the terminal device in the above method embodiments.
  • a communication unit may also be referred to as a transceiver, transceiver, transceiver, or the like.
  • the processing unit may also be referred to as a processor, a processing single board, a processing module, a processing device, and the like.
  • the device used for realizing the receiving function in the communication unit 502 may be regarded as a receiving unit, and the device used for realizing the sending function in the communication unit 502 may be regarded as a sending unit, that is, the communication unit 502 includes a receiving unit and a sending unit.
  • a communication unit may also sometimes be referred to as a transceiver, transceiver, or transceiver circuit, or the like.
  • the receiving unit may also sometimes be referred to as a receiver, receiver, or receiving circuit, or the like.
  • the transmitting unit may also sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, or the like.
  • a processing unit configured to generate a sequence of reference signals; the cyclic shift value of the sequence is determined according to a first parameter and a second parameter, the first parameter is a value from 0 to Q-1, the first parameter is The second parameter is a value from 0 to Z-1, the Z and Q are positive integers and Z is not equal to Q;
  • a communication unit configured to send the reference signal according to the sequence.
  • the present application provides a reference signal transmission method, including:
  • a processing unit configured to generate a sequence of reference signals; the cyclic shift value of the sequence is determined according to a first parameter and a second parameter, the first parameter is a value from 0 to Q-1, the first parameter is The second parameter is a value from 0 to Z-1, the Z and Q are positive integers and Z is not equal to Q;
  • a communication unit for performing signal detection according to the sequence.
  • a processing unit configured to generate a sequence of reference signals; at least two of the cyclic shift value, the sequence group number and the sequence number of the sequence are determined according to the pseudo-random sequence;
  • a communication unit configured to send the reference signal according to the sequence.
  • a processing unit used for generating a sequence of reference signals; at least two of the cyclic shift value, sequence group number and sequence number of the reference signal are determined according to a pseudo-random sequence; a communication unit is used for performing a sequence according to the sequence Signal Detection.
  • processing unit 501 and the communication unit 502 may also perform other functions.
  • processing unit 501 and the communication unit 502 may also perform other functions.
  • FIG. 6 shows an apparatus 600 provided by an embodiment of the present application, and the apparatus shown in FIG. 6 may be an implementation manner of a hardware circuit of the apparatus shown in FIG. 5 .
  • the communication apparatus can be applied to the flow chart shown above to perform the functions of the terminal device or the network device in the above method embodiments. For convenience of explanation, FIG. 6 only shows the main components of the communication device.
  • the communication apparatus 600 includes a processor 610 and an interface circuit 620 .
  • the processor 610 and the interface circuit 620 are coupled to each other.
  • the interface circuit 620 can be a transceiver or an input-output interface.
  • the communication apparatus 600 may further include a memory 630 for storing instructions executed by the processor 610 or input data required by the processor 610 to execute the instructions or data generated after the processor 610 executes the instructions.
  • the processor 610 is used to implement the functions of the above-mentioned processing unit 501
  • the interface circuit 620 is used to implement the functions of the above-mentioned communication unit 502 .
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments.
  • the terminal device chip receives information from other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or an antenna). antenna) to send information, the information is sent by the terminal equipment to the network equipment.
  • the network device chip When the above communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments.
  • the network device chip receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna). antenna) to send information, the information is sent by the network equipment to the terminal equipment.
  • processors in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits (Application Specific Integrated Circuit, ASIC), etc.
  • CPU Central Processing Unit
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • the processor may be a random access memory (Random Access Memory, RAM), a flash memory, a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM) in the art any other form of storage medium that is well known.
  • RAM Random Access Memory
  • ROM Read-Only Memory
  • PROM programmable read-only memory
  • the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by A component (eg, chip or circuit) implementation that can be used in a network device.
  • components such as chips or circuits
  • a component eg, chip or circuit
  • each network element in the above-mentioned implementation includes corresponding hardware structures and/or software modules for executing each function.
  • the present invention can be implemented in hardware or a combination of hardware and computer software in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.
  • the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by A component (eg, chip or circuit) implementation that can be used in a network device.
  • components such as chips or circuits
  • a component eg, chip or circuit
  • each network element in the above-mentioned implementation includes corresponding hardware structures and/or software modules for executing each function.
  • the present invention can be implemented in hardware or a combination of hardware and computer software in conjunction with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of the present invention.

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Abstract

一种信号发送、信号检测方法及装置,其中方法包括:生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;根据所述序列发送所述参考信号。通过这种方法,可以随机化任意两个终端设备确定参考信号的序列时使用的循环移位值之间的差值。进一步的,可以降低终端设备之间根据该方法获得的循环移位值生成的参考信号之间的干扰,实现干扰随机化的作用,提高信道时域滤波性能。

Description

一种信号发送、信号检测方法及装置 技术领域
本申请涉及无线通信技术领域,特别涉及一种信号发送、信号检测方法及装置。
背景技术
长期演进(long term evolution,LTE)以及新无线(new radio,NR)等系统中,上行参考信号,例如上行解调参考信号(demodulation reference signal,DMRS)和上行探测参考信号(sounding reference signal,SRS)的序列是采用基序列(Base Sequence)生成的序列,基序列可以是ZC(Zadoff-Chu)序列生成的序列,例如是ZC序列本身,或者是ZC序列通过循环移位生成的序列。
对于同一个基序列来说,采用不同的循环移位值,可以获得不同的参考信号。在同一个小区中,基站可以为不同终端设备分配不同的循环移位值来保证不同终端设备发送的参考信号之间的正交性,这样不同终端设备发送的参考信号之间可以不会造成干扰。但是对于不同的基序列来说,不管两个终端设备是否处于相同的小区,无论采用相同还是不同的循环移位值获得的参考信号之间的干扰都不为0。也就是说,处于同一个小区内的不同终端设备,或者处于相同小区内的不同终端设备,在相同的时频资源上发送基于不同基序列得到的参考信号时,这些参考信号之间会互相干扰。
发明内容
本申请实施方式的目的在于提供一种信号发送、信号检测方法及装置,用以解决如何降低终端设备发送的参考信号之间的干扰的问题。
第一方面,本申请提供一种参考信号传输方法,该方法的执行主体为终端设备或终端设备中的一个模块,这里以终端设备为执行主体为例进行描述。该方法包括:生成参考信号的序列;序列的循环移位值是根据第一参数以及第二参数确定的,第一参数为0~Q-1中的一个值,第二参数为0~Z-1中的一个值,Z、Q为正整数且Z不等于Q;根据所述序列发送参考信号。
序列的循环移位值是根据第一参数以及第二参数确定的,通过这种方法,可以随机化任意两个终端设备确定参考信号时使用的循环移位值之间的差值。进一步的,可以降低终端设备之间根据该方法获得的循环移位值生成的参考信号之间的干扰,实现干扰随机化的作用,提高信道时域滤波性能。
第二方面,本申请提供一种参考信号传输方法,该方法的执行主体为网络设备或网络设备中的一个模块,这里以网络设备为执行主体为例进行描述。该方法包括:生成参考信号的序列;序列的循环移位值是根据第一参数以及第二参数确定的,第一参数为0~Q-1中的一个值,第二参数为0~Z-1中的一个值,Z、Q为正整数且Z不等于Q;根据序列进行信号检测。
基于上述第一方面或第二方面,还存在以下可能的实现方式:
一种可能的实现方式中,Q大于Z。
一种可能的实现方式中,第一参数是根据伪随机序列确定的;伪随机序列是根据参考 信号的属性信息确定的。
一种可能的实现方式中,所述属性信息包括序列标识;或者,所述序列根据ZC序列生成,所述属性信息包括所述ZC序列的根指标。
一种可能的实现方式中,循环移位值α满足以下公式:
Figure PCTCN2020123442-appb-000001
或者,
Figure PCTCN2020123442-appb-000002
其中,θ 1为第一参数;θ 2为第二参数;t 1为第一系数;t 2为第二系数,第一系数和第二系数均不等于0。
一种可能的实现方式中,第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000003
其中,
Figure PCTCN2020123442-appb-000004
Figure PCTCN2020123442-appb-000005
是参考信号所在的时隙在系统帧中的时隙编号;
Figure PCTCN2020123442-appb-000006
为一个时隙中的正交频分复用OFDM符号的个数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000007
其中l=0对应的是该时隙中的第一个符号;T为正整数;c(·)为伪随机序列,mod为取模运算。
通过上面的方法,可以随机化终端设备在同一个系统帧内发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备在同一个系统帧内的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
一种可能的实现方式中,第一参数θ 1满足以下公式:
θ 1=n cs(n S)mod Q;
其中,
Figure PCTCN2020123442-appb-000008
n S为参考信号计数器的计数值;T为正整数;c(·)为伪随机序列,mod为取模运算。
通过上面的方法,可以随机化终端设备连续两次或者多次在相同频域资源上发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备两次或者多次在相同时频资源上所发送的参考信号之间的干扰,从而可以提升参考信号时域滤波的性能,提高信道估计的准确度。
一种可能的实现方式中,第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000009
其中,
Figure PCTCN2020123442-appb-000010
Figure PCTCN2020123442-appb-000011
是参考信号所在的时隙在系统帧中的时隙编号;n f为参考信号所在的系统帧编号;
Figure PCTCN2020123442-appb-000012
为一个系统帧中的时隙数;T S为参考信号的发送周期;L为整数;T为正整数;c(·)为伪随机序列,mod为取模运算。
通过上面的方法,可以随机化终端设备在任意两个参考信号发送周期发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备的参考信号之间的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
一种可能的实现方式中,第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000013
其中,
Figure PCTCN2020123442-appb-000014
Figure PCTCN2020123442-appb-000015
Figure PCTCN2020123442-appb-000016
是参考信号所在的时隙在系统帧中的时隙编号;n f为参考信号所在的系统帧编号;
Figure PCTCN2020123442-appb-000017
为一个系统帧中的时隙数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000018
其中l=0对应的是该时隙中的第一个符号;T为正整数;S为正整数;c(·)为伪随机序列,mod为取模运算。
通过上面的方法,可以随机化终端设备在任意两个或者多个符号上发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备在任意两个或者多个符号上发送的参考信号之间的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
一种可能的实现方式中,第一参数是根据第一循环移位间隔确定的,第一循环移位间隔为根据第一时间单元的信息从第一图样中确定的,第一图样中包括Y个循环移位间隔,Y为大于1的整数;或者,第一参数为根据第一循环移位步长以及第一时间单元的信息确定的;或者,第一参数为根据第一初始循环移位步长、第一循环移位步长差以及第一时间单元的信息确定的;第一时间单元的信息包括第一时间单元所在的系统帧编号,和/或第一时间单元所在的时隙在当前系统帧中的时隙编号;第一时间单元为参考信号所在的时间单元。
一种可能的实现方式中,第一参数是根据第一循环移位间隔确定的时,循环移位值α是根据λ确定的,其中λ满足以下公式:
Figure PCTCN2020123442-appb-000019
其中,
Figure PCTCN2020123442-appb-000020
为第一循环移位间隔,
Figure PCTCN2020123442-appb-000021
为第一参数,θ 2为第二参数,
Figure PCTCN2020123442-appb-000022
为一个系统帧中的时隙数;n f为参考信号所在的系统帧编号;
Figure PCTCN2020123442-appb-000023
是参考信号所在的时隙在当前系统帧中的时隙编号;L为整数;T S为参考信号的发送周期;Z为正整数;
Figure PCTCN2020123442-appb-000024
为向下取整运算,mod为取模运算。
上述方法流程中,可以随机化小区内任意两个终端设备确定参考信号时使用的循环移位值之间的差值。进一步的,可以降低终端设备之间发送的参考信号之间的干扰,实现干扰随机化的作用,提高信道时域滤波性能。
一种可能的实现方式中,第一参数为根据第一循环移位步长以及第一时间单元的信息确定的时,循环移位值α是根据λ确定的,其中λ满足以下公式:
Figure PCTCN2020123442-appb-000025
其中,Δhopping为第一循环移位步长;
Figure PCTCN2020123442-appb-000026
为第 一参数,θ 2为第二参数,
Figure PCTCN2020123442-appb-000027
为一个系统帧中的时隙数;n f为参考信号所在的系统帧编号;
Figure PCTCN2020123442-appb-000028
是参考信号所在的时隙在当前系统帧中的时隙编号;L为整数;T S为参考信号的发送周期;Z为正整数;
Figure PCTCN2020123442-appb-000029
为向下取整运算,mod为取模运算。
一种可能的实现方式中,第一参数为根据第一初始循环移位步长、第一循环移位步长差以及第一时间单元的信息确定的时,循环移位值α是根据λ确定的,其中λ满足以下公式:
Figure PCTCN2020123442-appb-000030
其中,
Figure PCTCN2020123442-appb-000031
为第一参数,θ 2为第二参数,
Figure PCTCN2020123442-appb-000032
为一个系统帧中的时隙数;n f为参考信号所在的系统帧编号;
Figure PCTCN2020123442-appb-000033
是参考信号的时隙在当前系统帧中的时隙编号;L为整数;Δh init为第一初始循环移位步长,Δh gap为第一循环移位步长差;T S为参考信号的发送周期,
Figure PCTCN2020123442-appb-000034
为向下取整运算,mod为取模运算。
一种可能的实现方式中,第二参数θ 2满足以下公式:θ 2=K mod Z;其中,K是根据配置信息确定的。
一种可能的实现方式中,Z为
Figure PCTCN2020123442-appb-000035
为最大循环移位值。
一种可能的实现方式中,Q为参考信号的序列长度,或者Q为参考信号所占的子载波个数。
第三方面,本申请提供一种参考信号传输方法,该方法的执行主体为终端设备或终端设备中的一个模块,这里以终端设备为执行主体为例进行描述。该方法包括:生成参考信号的序列;序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;根据所述序列发送参考信号。
第四方面,本申请提供一种参考信号传输方法,该方法的执行主体为网络设备或网络设备中的一个模块,这里以网络设备为执行主体为例进行描述。该方法包括:生成参考信号的序列;序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;根据序列进行信号检测。
根据上面的方法,根据伪随机序列确定循环移位值、序列组号以及序列号中的至少两项,可以有效的随机化确定循环移位值、序列组号以及序列号,从而可以有效随机化参考信号间干扰,进而提高信道估计准确度。
基于上述第三方面或第四方面,还存在以下可能的实现方式:
一种可能的实现方式中,Q大于Z。
一种可能的实现方式中,伪随机序列是根据参考信号的属性信息确定的。
一种可能的实现方式中,所述属性信息包括序列标识;或者,所述序列根据ZC序列生成,所述属性信息包括所述ZC序列的根指标。
一种可能的实现方式中,循环移位值根据伪随机序列确定时,循环移位值α满足以下 公式:
Figure PCTCN2020123442-appb-000036
或者,
Figure PCTCN2020123442-appb-000037
其中,θ 1为第一参数;θ 2为第二参数;t 1为第一系数;t 2为第二系数,第一系数和第二系数均不等于0。
一种可能的实现方式中,第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000038
或者,θ 1=n cs(n S)mod Q,
或者,
Figure PCTCN2020123442-appb-000039
或者,
Figure PCTCN2020123442-appb-000040
其中,
Figure PCTCN2020123442-appb-000041
Figure PCTCN2020123442-appb-000042
Figure PCTCN2020123442-appb-000043
Figure PCTCN2020123442-appb-000044
其中,Q为正整数,T为正整数;n f为参考信号所在的系统帧编号,
Figure PCTCN2020123442-appb-000045
为一个系统帧中的时隙数;
Figure PCTCN2020123442-appb-000046
是参考信号所在的时隙在系统帧中的时隙编号,
Figure PCTCN2020123442-appb-000047
为一个时隙中的正交频分复用OFDM符号的个数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000048
其中l=0对应的是该时隙中的第一个符号,
Figure PCTCN2020123442-appb-000049
为一个系统帧中的时隙数;n S为参考信号计数器的计数值;T S为参考信号的发送周期;c(·)是伪随机序列;mod为取模运算。
一种可能的实现方式中,第二参数θ 2满足以下公式:θ 2=K mod Z;其中,K是根据配置信息确定的。
一种可能的实现方式中,循环移位值根据伪随机序列确定时,循环移位值α满足以下公式:
Figure PCTCN2020123442-appb-000050
或者,
Figure PCTCN2020123442-appb-000051
或者,
Figure PCTCN2020123442-appb-000052
或者,
Figure PCTCN2020123442-appb-000053
其中,
Figure PCTCN2020123442-appb-000054
Figure PCTCN2020123442-appb-000055
Figure PCTCN2020123442-appb-000056
Figure PCTCN2020123442-appb-000057
其中,K是根据配置信息确定的;Q为正整数,T为正整数;
Figure PCTCN2020123442-appb-000058
是参考信号所在的时隙在系统帧中的时隙编号;n f为参考信号所在的系统帧编号,
Figure PCTCN2020123442-appb-000059
为一个时隙中的正交频分复用OFDM符号的个数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000060
其中l=0对应的是该时隙中的第一个符号,
Figure PCTCN2020123442-appb-000061
为一个系统帧中的时隙数;n S为参考信号计数器的计数值;T S为参考信号的发送周期;c(·)为伪随机序列,
Figure PCTCN2020123442-appb-000062
为向下取整运算,mod为取模运算。
一种可能的实现方式中,Z为
Figure PCTCN2020123442-appb-000063
为最大循环移位值。
一种可能的实现方式中,序列组号根据伪随机序列确定时,序列组号u满足以下公式:
Figure PCTCN2020123442-appb-000064
或者,
Figure PCTCN2020123442-appb-000065
其中,
Figure PCTCN2020123442-appb-000066
Figure PCTCN2020123442-appb-000067
W、A和T为整数;n f为参考信号所在的系统帧编号,
Figure PCTCN2020123442-appb-000068
为一个系统帧中的时隙数;
Figure PCTCN2020123442-appb-000069
是参考信号所在的时隙在系统帧中的时隙编号,
Figure PCTCN2020123442-appb-000070
为一个时隙中的正交频分复用OFDM符号的个数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000071
其中l=0对应的是该时隙中的第一个符号;c(·)是伪随机序列,mod为取模运算。
一种可能的实现方式中,序列号根据伪随机序列确定时,序列号v满足以下公式:
Figure PCTCN2020123442-appb-000072
或者,
Figure PCTCN2020123442-appb-000073
其中,E和T为正整数;n f为参考信号所在的系统帧编号,
Figure PCTCN2020123442-appb-000074
为一个系统帧中的时隙数;
Figure PCTCN2020123442-appb-000075
是参考信号所在的时隙在系统帧中的时隙编号,
Figure PCTCN2020123442-appb-000076
为一个时隙中的正交频分复用OFDM符号的个数;l为参考信号的符号在当前时隙中的符号编号,
Figure PCTCN2020123442-appb-000077
其中l=0对应的是当前时隙中的第一个符号;c(·)是伪随机序列。
一种可能的实现方式中,Q为参考信号的序列长度,或者Q为参考信号所占的子载波个数。
第五方面,本申请还提供一种通信装置,该通信装置具有实现上述第一方面至第四方面中的任一方面提供的任一方法。该通信装置可以是网络设备或者终端设备。该通信装置可以通过硬件实现,也可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的实现方式中,该通信装置包括:处理器,该处理器被配置为支持该通信装置执行以上所示方法中相应功能。该通信装置还可以包括存储器,该存储可以与处理器耦合,其保存该通信装置必要的程序指令和数据。可选地,该通信装置还包括通信接口,该通信接口用于支持该通信装置与其他设备之间的通信。
在一种可能的实现方式中,该通信装置包括相应的功能模块,分别用于实现以上方法中的步骤。功能可以通过硬件实现,也可以通过硬件执行相应的软件实现。硬件或软件包括一个或多个与上述功能相对应的模块。
在一种可能的实施方式中,通信装置的结构中包括处理单元和通信单元,这些单元可以执行上述方法示例中相应功能,具体参见第一方面提供的方法中的描述,此处不做赘述。
第六方面,提供了一种通信装置,包括处理器和接口电路,接口电路用于接收来自该 通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置,该处理器通过逻辑电路或执行代码指令用于实现前述第一方面、任一方面的任意可能的实现方式中的方法。
第七方面,提供了一种通信装置,包括处理器和接口电路,接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置,该处理器通过逻辑电路或执行代码指令用于实现前述第二方面、第二方面的任意可能的实现方式中的方法的功能模块。
第八方面,提供了一种通信装置,包括处理器和接口电路,接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置,该处理器通过逻辑电路或执行代码指令用于实现前述第三方面、第三方面的任意可能的实现方式中的方法的功能模块。
第九方面,提供了一种通信装置,包括处理器和接口电路,接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置,该处理器通过逻辑电路或执行代码指令用于实现前述第四方面、第四方面的任意可能的实现方式中的方法的功能模块。
第十方面,提供了一种计算机可读存储介质,该计算机可读存储介质中存储有计算机程序或指令,当该计算机程序或指令被处理器执行时,实现前述第一方面或第三方面或第五方面或第七方面中任一方面、以及任一方面的任意可能的实现方式中的方法。
第十一方面,提供了一种包含指令的计算机程序产品,当该指令被处理器运行时,实现前述第一方面至第四方面中任一方面、以及任一方面的任意可能的实现方式中的方法。
第十二方面,提供一种芯片系统,该芯片系统包括处理器,还可以包括存储器,用于实现前述第一方面至第四方面中任一方面、以及任一方面的任意可能的实现方式中的方法。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。
第十三方面,提供一种通信系统,系统包括第六方面的装置(如终端设备)以及第七方面的装置(如网络设备)。
第十四方面,提供一种通信系统,所述系统包括第八方面所述的装置(如终端设备)以及第九方面所述的装置(如网络设备)。
附图说明
图1为适用于本申请实施例的网络架构示意图;
图2为本申请实施例提供的一种信号传输方法流程示意图;
图3为本申请实施例提供的一种信号示意图;
图4为本申请实施例提供的一种信号传输方法流程示意图;
图5为本申请实施例提供的一种通信装置结构示意图;
图6为本申请实施例提供的一种通信装置结构示意图。
具体实施方式
下面将结合附图对本申请实施例作进一步地详细描述。
本申请实施例可以应用于各种移动通信系统,例如:新无线(new radio,NR)系统、长期演进(long term evolution,LTE)系统、先进的长期演进(advanced long term evolution, LTE-A)系统、通用移动通信系统(universal mobile telecommunication system,UMTS)、演进的长期演进(evolved long term evolution,eLTE)系统、未来通信系统等其它通信系统,在此不做限制。
本申请实施例中,终端设备,可以为具有无线收发功能的设备或可设置于任一设备中的芯片,也可以称为用户设备(user equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。本申请实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality,VR)终端、增强现实(augmented reality,AR)终端、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。
网络设备,可以为各种制式下无线接入设备,例如演进型节点B(evolved Node B,eNB)、无线网络控制器(radio network controller,RNC)或节点B(Node B,NB)、基站控制器(base station controller,BSC)、基站收发台(base transceiver station,BTS)、家庭基站(例如,home evolved NodeB,或home Node B,HNB)、基带单元(baseband unit,BBU),无线保真(wireless fidelity,WIFI)系统中的接入点(access point,AP)、无线中继节点、无线回传节点、传输点(transmission and reception point,TRP或者transmission point,TP)等,还可以为5G(NR)系统中的gNB或传输点(TRP或TP),5G系统中的基站的一个或一组(包括多个天线面板)天线面板,或者,还可以为构成gNB或传输点的网络节点,如基带单元,或在集中式-分布式(central unit-distributed,CU-DU)架构下的DU等。
图1为本申请实施例适用的一种网络架构示意图。如图1所示,终端设备可接入到网络设备,以通过网络设备获取外网(例如数据网络(data network,DN))的服务,或者通过网络设备与其它设备通信,如可以与其它终端设备通信。
图1所示的网络中,终端设备可以向网络设备发送参考信号,网络设备从而可以基于该参考信号对信道质量进行估计等操作。其中,参考信号包括但不限于DMRS和SRS等。
举例来说,参考信号为SRS时,长度为M的SRS的序列r u,v(n)可以由基序列
Figure PCTCN2020123442-appb-000078
通过如下公式生成:
Figure PCTCN2020123442-appb-000079
其中,
Figure PCTCN2020123442-appb-000080
Figure PCTCN2020123442-appb-000081
其中,N ZC是基序列
Figure PCTCN2020123442-appb-000082
的长度;α是循环移位值,是网络设备配置的;q为根指标(root index);j为虚数单位。u是序列组号,v是序列号,v=0或v=1,u=0,1,…,29;u和v的具体取值是网络设备配置的。基序列
Figure PCTCN2020123442-appb-000083
可以是ZC序列生成的序列,例如是ZC序列本身,或者是ZC序列通过循环移位生成的序列。
第三代伙伴计划(the 3rd generation partnership project,3GPP)标准中,定了多种SRS序列的长度M,并且针对大于或等于72的各M取值,分别定义了60个基序列,其中, 这60个基序列是由长度相同并且根指标不同的ZC序列生成的。针对长度为M的SRS序列,确定一个小于等于M的最大质数N ZC,作为生成该SRS序列的ZC序列的长度。进一步,这60个基序列被分为30组,不同组的基序列可以分配给不同的小区。以M=72为例,生成30组基序列的是长度为71的ZC序列,这些ZC序列的根指标与基序列的组号的关系可以参考表1所示:
表1
Figure PCTCN2020123442-appb-000084
由表1可知,每个组内有两个根指标,由v确定具体使用哪个根指标,例如序列组号u=1时,该组中包括两个根指标,分别为5和4,v=0时,根指标为5;v=1时,根指标为4。目前,在不进行跳频的情况下,v的取值一般默认为0。针对相同的SRS的长度M,不同的基序列对应了不同的ZC序列的根的取值,即基序列与ZC序列的根的取值是一一对应的。
目前,循环移位值是网络设备配置的,对于同一个基序列来说,采用不同的循环移位值α,可以获得不同的SRS序列。如果存在两个循环移位值α 1和α 2,当α 1和α 2满足α 1mod 2π≠α 2mod 2π时,由基序列r(m)和α 1获得的序列x 1(m)、与由基序列r(m)和α 2获得的序列x 2(m)是相互正交的,即互相关系数为零。其中,序列x 1(m)和x 2(m)的长度为M,m=0,1…M-1,互相关系数定义为:
Figure PCTCN2020123442-appb-000085
由于互相关系数为0,因此,可以将基于同一个基序列和不同循环移位值α得到的SRS序列分配给不同的终端设备,这些终端设备可以在相同的时频资源上发送这些基于同一个基序列的循环移位生成的SRS序列,当终端设备的信道在SRS序列长度内平坦时,这些SRS序列不会造成终端设备间干扰。
对于不同的基序列来说,采用无论相同或者不同的循环移位值α获得的SRS序列之间的干扰都不为0。也就是说,将基于不同基序列的相同或者不同循环移位值得到的SRS序列分配给不同的终端设备,这些终端设备可以在相同的时频资源上发送这些基于不同基序列的循环移位生成的SRS序列,当终端设备的信道在SRS序列长度内平坦时,这些SRS序列会造成终端设备间干扰。
例如,如表2所示,两个小区分别对应两个基序列,每个小区内有两个终端设备,每个小区内的两个终端设备使用相同基序列的2个不同的循环移位值,则有4个终端设备UE1至UE4可以在相同的时频资源上发送SRS。
表2
UE1:基序列1,α 1 UE2:基序列1,α 2
UE3:基序列2,α 3 UE4:基序列2,α 4
为了提高信道估计的准确性,若信道估计使用时域滤波,也就是说将相邻的几次SRS 信道估计结果做加权平均,以提高信道估计的精度。某个SRS发送周期内,有两个基序列s 1和s 2,UE1和UE2使用基序列s 1的两个不同循环移位α 1和α 2进行信道估计,UE3和UE4使用基序列s 2的两个不同循环移位α 3和α 4进行信道估计,假设四个终端设备在SRS序列的M个子载波上信道平坦且分别为h 1、h 2、h 3和h 4。在SRS序列占用的M个子载波的第k个子载波上,网络设备收到的信号y(k)为:
Figure PCTCN2020123442-appb-000086
为了估计UE1的信道h 1,网络设备将接收信号与该UE使用的SRS序列进行相关操作:
Figure PCTCN2020123442-appb-000087
其中,
Figure PCTCN2020123442-appb-000088
为UE3对UE1信道估计产生的干扰;
Figure PCTCN2020123442-appb-000089
为UE4对UE1的信道估计产生的干扰。在连续几个SRS测量周期内信道基本保持不变且这几个SRS测量周期中UE3和UE4对UE1的干扰非常随机的情况下,可以对这几个SRS测量周期得到的估计信道做时域滤波从而得到更加准确的信道估计结果。
由UE3对UE1的干扰和UE4对UE1的干扰可知出,两个终端设备SRS序列之间的干扰值由两个SRS序列之间的循环移位差值决定。但是由于现有技术中,这个循环移位差值不变,无法随机化干扰。这导致小区间SRS干扰变大,进而导致小区边缘终端设备的信道估计精度下降。同理,若小区内有两个终端设备使用不同的基序列在相同的时频资源上发送SRS,也会使得小区内的SRS干扰变大,进而导致该两个终端设备的信道估计精度下降。
本申请实施例中,通过随机化的方式确定循环移位值,实现随机化参考信号之间的干扰,从而提高信道估计的准确性,下面将详细说明。
为了描述方便,以下将本申请中可能涉及的参数进行说明。
Figure PCTCN2020123442-appb-000090
是参考信号所在的时隙在系统帧中的时隙编号,时隙编号与子载波间隔有关,例如当子载波间隔为15kHz时,所述时隙编号为0~9中的一个整数;μ为子载波间隔的配置取值,且与子载波间隔大小一一对应;
Figure PCTCN2020123442-appb-000091
为一个时隙中的正交频分复用(orthogonal frequency division multiplexing,OFDM)符号的个数;l为参考信号所在的符号在时隙中的符号编号,
Figure PCTCN2020123442-appb-000092
其中l=0对应的是该时隙中的第一个符号,例如,发送参考信号的符号在当前时隙中的第11个符号上发送,则l=10;以下的描述中,将OFDM符号简称为符号;应理解,l还可以替换为l=l 0+l',其中,l 0是参考信号在当前时隙中的起始OFDM符号的编号;l'是参考信号占用的符号在参考信号资源内的OFDM符号的编号,
Figure PCTCN2020123442-appb-000093
Figure PCTCN2020123442-appb-000094
是一个资源块所占的子载波个数;
Figure PCTCN2020123442-appb-000095
为一个系统帧中的时隙数;n S为参考信号计数器的计数值;T S为参考信号的发送周期;T offset为参考信号的时隙偏移值,T S和T offset为根据预定义的规则和/或网络设备的配置信息确定的;R为参考信号重复因子(repetition factor),是根据预定义的规则和/或网络设备的配置信息确定的。B为预设的整数,或者根据预定义的规则和/或网络设备的 配置信息确定的整数。
Figure PCTCN2020123442-appb-000096
为向下取整运算,mod为取模运算。
Figure PCTCN2020123442-appb-000097
是参考信号资源所占用的总的OFDM符号的个数;
Figure PCTCN2020123442-appb-000098
是参考信号资源对应的天线端口数。
在本申请各实施例中,如果没有特殊说明,下面出现相同的参数时,该参数的含义与上面描述的相同,不再赘述。
应理解,本申请各实施例中,一个参考信号资源包括一个或多个天线端口,每个天线端口可以对应一个序列,每个序列可以根据本申请各实施例的方法生成,进而生成包括多个天线端口的参考信号。例如:一个SRS资源包括
Figure PCTCN2020123442-appb-000099
个天线端口,共对应
Figure PCTCN2020123442-appb-000100
个序列。
应理解,本申请各实施例中,一个参考信号资源包括一个或多个天线端口。一个参考信号资源内的不同的天线端口可以占用完全相同的符号,互相通过频分(占用不同的子载波)或者码分(利用不同的ZC序列或者相同序列的不同循环移位)的方式进行复用。本申请各实施例对此不做限定。其中,参考信号资源和参考信号之间存在对应关系,具体如何对应,可以参考现有标准中的描述。进一步的,在一些场景中,参考信号资源和参考信号可以是等价的。
还应理解,本申请各实施例中,以SRS为例,一个参考信号资源对应的SRS在各个OFDM符号内使用的序列可以不同,也可以相同,具体由该参考信号序列生成公式确定。例如:图2中根据公式(4)或公式(11)生成的SRS序列的方法中,一个参考信号资源对应的SRS在各个OFDM符号内使用的序列可以不同,以实现随机化干扰的目的。同样的,图4的流程中生成参考信号的序列的方法也可以实现在一个参考信号资源对应的SRS在各个OFDM符号内使用的序列可以不同,以实现随机化干扰的目的。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。
结合前面的描述,如图2所示,为本申请实施例提供的一种方法流程示意图。参见图2,该方法包括:
步骤201:生成参考信号的序列。
其中,序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q。在一种可能的实现方式中,Q大于Z。
步骤202:根据所述序列发送参考信号。
其中,参考信号可以为上行探测参考信号(sounding reference signal,SRS),还可以为上行解调参考信号(demodulation reference signal,DMRS),相位跟踪信号等。
需要说明的是,参考信号的序列,可以是指一定长度的比特序列,终端设备可以将该序列进行调制等操作,可以获得相应的无线信号,可以将该无线信号称为参考信号。因此,在有些情况下,可以将参考信号的序列,和参考信号认为是等同的。
步骤201至步骤202可以由终端设备执行。
步骤203:生成参考信号的序列。
步骤204:根据序列进行信号检测。
步骤203至步骤204可以由网络设备执行,其中网络设备生成参考信号的序列的具体实现方式,可以和步骤201中的实现方式相同,在此不再赘述。
需要说明的是,终端设备以及网络设备具体如何生成参考信号的序列,生成参考信号的序列的过程,本申请实施例并不限定,在此不再赘述。相应的,网络设备具体如何进行检测,本申请实施例并不限定,在此不再赘述。
上述方法流程中,序列的循环移位值是根据第一参数以及第二参数确定的,通过这种方法,可以随机化任意两个终端设备确定参考信号时使用的循环移位值之间的差值。进一步的,可以降低终端设备之间根据该方法获得的循环移位值生成的参考信号之间的干扰,实现干扰随机化的作用,提高信道时域滤波性能。
例如,以参考信号为SRS为例,如图3以及表3所示,两个终端设备UE5和UE6,UE5位于小区1中,UE6位于小区2中,UE5和UE6对应的两个SRS资源分别对应两个基序列,且每个SRS资源在一个时隙内占用4个符号(符号10、符号11、符号12、符号13),该两个终端设备在相同的时频资源上发送SRS,根据本申请实施例的方法,符号和循环移位值的对应关系可以参考表3所示,表3中,该两个终端设备对应的SRS在4个符号上的循环移位值均不同,也就是说在该4个符号上经历的干扰不同。若信道估计使用时域滤波,也即若将符号10、符号11、符号12、符号13上的4次SRS信道估计结果做加权平均,结合前面的描述可知,可以有效提高信道估计的精度。
表3
  符号10 符号11 符号12 符号13
UE5:基序列1 循环移位值c1 循环移位值c2 循环移位值c3 循环移位值c4
UE6:基序列2 循环移位值d1 循环移位值d2 循环移位值d3 循环移位值d4
可以理解的,上述方法流程中,步骤201至步骤202与步骤203至步骤204可以分别实施。即从终端设备的角度,在上述方法流程中,可以只执行步骤201至步骤202,从网络设备的角度,在上述方法流程中,可以只执行步骤203至步骤204。
图2所示的流程中,循环移位值可能存在多种实现方式,下面分别进行描述。
本申请实施例中,循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000101
或者,
Figure PCTCN2020123442-appb-000102
其中,θ 1为第一参数;θ 2为第二参数;t 1为第一系数;t 2为第二系数,第一系数和第二系数均不等于0。例如,第一系数和第二系数均等于1。再例如,第一系数和第二系数均等于1/2。再例如,第一系数等于2/3和第二系数均等于1/3。第一系数和第二系数可以为预设值,也可以为网络设备配置的,本申请并不限定。本申请实施例中,Z可以是预定义的,或者网络设备配置的,或者是根据网络设备配置的其他参数确定的。例如Z可以等于
Figure PCTCN2020123442-appb-000103
为最大循环移位值,最大循环移位值可以是指循环移位的最大取值。Q为参考信号的序列长度,或者Q为所述参考信号所占的子载波个数。
以上只是示例,上面的公式还可能存在其他变形,在此不再一一列举。
本申请实施例中,第二参数θ 2可以满足以下公式:
θ 2=K mod Z;·····(3)
其中,所述K是根据配置信息确定的,该配置信息可以为网络设备发送至终端设备的。
举例来说,参考信号为SRS时,
Figure PCTCN2020123442-appb-000104
其中,
Figure PCTCN2020123442-appb-000105
是由高层信令配置的,
Figure PCTCN2020123442-appb-000106
Figure PCTCN2020123442-appb-000107
是根据高层信令配置信息确定的。例如:
Figure PCTCN2020123442-appb-000108
根据K TC(K TC可称为传输梳齿值)确定,其中,K TC由网络设备配置,K TC
Figure PCTCN2020123442-appb-000109
的对应关系可以如表4所示。
表4
Figure PCTCN2020123442-appb-000110
W K可以是预定义的,或者网络设备配置的,或者通过其他方式确定的,例如W K=1000。
Figure PCTCN2020123442-appb-000111
是参考信号资源对应的天线端口数;p是参考信号占用的天线端口编号。
例如:一个SRS资源包括
Figure PCTCN2020123442-appb-000112
个天线端口,将每个天线端口编号带入上述公式中的p均可以生成一个序列,因此对于一个包括
Figure PCTCN2020123442-appb-000113
个天线端口的SRS资源,根据本申请各实施例的方法可以生成
Figure PCTCN2020123442-appb-000114
个序列。
结合前面的描述,本申请实施例中,第一参数可以是根据伪随机序列确定的,具体数可以存在多种实现。
第一种方法:第一参数θ 1可以满足以下公式:
Figure PCTCN2020123442-appb-000115
其中,
Figure PCTCN2020123442-appb-000116
T为正整数,例如T=8;c(·)为伪随机序列。
结合公式(1)、公式(4)以及,公式(5),假设第一系数和第二系数均等于1,参考信号为SRS时,参考信号的序列的循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000117
通过上面的方法,可以随机化终端设备在同一个系统帧内发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备在同一个系统帧内的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
第二种方法:第一参数θ 1可以满足以下公式:
θ 1=n cs(n S)mod Q;·····(6)
其中,
Figure PCTCN2020123442-appb-000118
n S为参考信号计数器的计数值;T为正整数;c(·)为所述伪随机序列。
举例来说,当参考信号为SRS时,公式(6)中的n S可以满足以下公式:
Figure PCTCN2020123442-appb-000119
结合公式(1)、公式(3)以及,公式(6),假设第一系数和第二系数均等于1,参考信号为SRS时,参考信号的序列的循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000120
通过上面的方法,可以随机化终端设备连续两次或者多次在相同频域资源上发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备两次或者多次在相同时频资源上所发送的参考信号之间的干扰,从而可以提升参考信号时域滤波的性能,提高信道估计的准确度。
第三种方法:第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000121
其中,
Figure PCTCN2020123442-appb-000122
L为整数,L可以是根据预定的方式和/或网络设备的配置信息确定的,举例来说,L可以为等于参考信号的时隙偏移值T offset;T为正整数;c(·)为所述伪随机序列。
结合公式(1)、公式(3)以及,公式(9),假设第一系数和第二系数均等于1,参考信号为SRS时,参考信号的序列的循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000123
通过上面的方法,可以随机化终端设备在任意两个参考信号发送周期发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备的参考信号之间的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
第四种方法:第一参数θ 1满足以下公式:
Figure PCTCN2020123442-appb-000124
其中,
Figure PCTCN2020123442-appb-000125
Figure PCTCN2020123442-appb-000126
T为正整数;S为正整数,例如,S为一个时隙中的OFDM符号的个数,也就是说
Figure PCTCN2020123442-appb-000127
c(·)为所述伪随机序列。
结合公式(1)、公式(3)以及,公式(11),假设第一系数和第二系数均等于1,参考信号为SRS时,参考信号的序列的循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000128
通过上面的方法,可以随机化终端设备在任意两个或者多个符号上发送的参考信号的序列的循环移位值,从而可以随机化任意两个使用不同ZC序列确定参考信号的终端设备在任意两个或者多个符号上发送的参考信号之间的干扰,实现提升参考信号时域滤波的性能,提高信道估计的准确度。
需要说明的是,上面的任一方法中,该伪随机序列是根据参考信号的属性信息确定的,或者是根据终端设备的属性信息确定的。
举例来说,伪随机序列c(·)可以满足以下形式:
c(n)=(x 1(n+N C)+x 2(n+N C))mod 2
x 1(n+31)=(x 1(n+3)+x 1(n))mod 2     ·····(13)
x 2(n+31)=(x 2(n+3)+x 2(n+2)+x 2(n+1)+x 2(n))mod 2
其中,N C=1600;x 1(0)=1,x 1(n)=0,n=1,2,...,30;x 2(n),n=0,1,2,...,30为伪随机序列c(·)的初始种子参数c init的二进制表达方式,即
Figure PCTCN2020123442-appb-000129
公式(13)中,可以采用参考信号的属性信息或者终端设备的属性信息确定伪随机序列的初始种子参数,从而生成相应的伪随机序列,下面分别进行描述。
参考信号的属性信息可以包括确定所述参考信号所使用的ZC序列的根指标;属性信息还可以包括所述参考信号的序列标识。终端设备的属性信息具体可以为用于表征一个终端设备区别于其它终端设备的特征,或者用于表征一组终端设备共有的但区别于其它终端设备的特征,例如可以包括终端设备的标识信息。
下面几种可能的实现方式只是举例说明,并不对本申请中的属性信息构成限制。
一种可能的实现方式中,属性信息包括确定参考信号所使用的ZC序列的根指标q。在该实现方式中,根指标q与初始种子参数c init之间可以满足以下关系:c init=f 1(q)。由不同的根指标q得到的f 1(q)的取值不同。其中,由于不同基序列对应的ZC序列的根指标不同,所以使用同一个ZC序列生成参考信号的序列的终端设备的c init的取值相同,使用不同ZC序列生成参考信号的序列的终端设备的c init的取值不同。
需要说明的是,本申请实施例对c init=f 1(q)的具体实现方式并不限定,可能存在多种方式。举例来说,c init=q+K c1,K c1为预设正整数,例如K c1=2。再举例来说,c init=q,即初始种子参数c init与根指标q相等。其它情况不再赘述。
在该实现方式中,由于基于相同基序列的不同循环移位生成的参考信号之间是正交的,所以只需要考虑基于不同基序列生成的参考信号之间的干扰。由于不同基序列对应的ZC序列的根指标q的取值不同,因此可以使得基于不同基序列生成的参考信号的循环移位跳的模式不同,从而达到干扰随机化的作用。
一种可能的实现方式中,属性信息包括序列标识。在该实现方式中,序列标识n ID与初始种子参数c init之间可以满足以下关系:c init=f 2(n ID)。由不同的序列标识n ID得到的f 2(n ID)的取值不同。其中,由于不同参考信号的序列标识不同,所以使用同一个参考信号 的终端设备的c init的取值相同,使用不同参考信号的终端设备的c init的取值不同。
需要说明的是,参考信号对应参考信号资源,网络设备可以为参考信号资源配置各种参数,其中一个参数就是前面描述的序列标识,也就是说,本申请实施例中的序列标识n ID,是指参考信号资源的序列标识。
需要说明的是,本申请实施例对c init=f 2(n ID)的具体实现方式并不限定,可能存在多种方式。举例来说,c init=n ID+K c2,K c2为预设正整数,例如K c2=2。再举例来说,c init=n ID,即初始种子参数c init与序列标识n ID相等。其它情况不再赘述。
在该实现方式中,可以通过给不同的终端设备配置不同的序列标识n ID使得不同终端设备发送的参考信号的循环移位跳的模式不同,从而达到干扰随机化的作用。
一种可能的实现方式中,终端设备的属性信息可以包括终端设备的标识信息。标识信息可以是一个终端设备专用标识信息,例如标识信息可以为终端设备的小区无线网络临时标识(cell radio network temporary identity,C-RNTI),也可以终端设备的国际移动用户识别码(international mobile subscriber identity,IMSI),还可以为终端设备的临时移动台标识符(temporary mobile station identifier,TMSI)等。标识信息还可以是一组终端设备共享的标识信息,本申请不作限制。
在该实现方式中,终端设备的标识信息
Figure PCTCN2020123442-appb-000130
与初始种子参数c init之间可以满足以下关系:
Figure PCTCN2020123442-appb-000131
由不同的标识信息
Figure PCTCN2020123442-appb-000132
得到的
Figure PCTCN2020123442-appb-000133
的取值不同。其中,由于不同终端设备的标识信息不同,所以使用不同标识信息的终端设备的c init的取值不同。
同样的,在该实现方式中,对
Figure PCTCN2020123442-appb-000134
的具体实现方式并不限定,在此不再赘述。
前面的实施例中,第一参数是根据伪随机序列确定的,本申请实施例中,第一参数还可以根据其他方式确定,下面将详细描述。
第五种方法:第一参数是根据第一循环移位间隔确定的,循环移位值α是根据λ确定的,例如α=λ,其中λ满足以下公式:
Figure PCTCN2020123442-appb-000135
其中,
Figure PCTCN2020123442-appb-000136
为第一循环移位间隔,
Figure PCTCN2020123442-appb-000137
为第一参数。Z和L等参数的具体含义,可以参考前面公式中的描述,在此不再赘述。
上面的公式还可以存在其他变形,例如可以如公式(15)所示:
Figure PCTCN2020123442-appb-000138
其中,
Figure PCTCN2020123442-appb-000139
为第一循环移位间隔;
Figure PCTCN2020123442-appb-000140
为第一参数。
本申请实施例中,第一循环移位间隔为根据第一时间单元的信息从第一图样中确定的,所述第一图样中包括Y个循环移位间隔,例如,所述第一图样为[β 012,...,β Y-1],Y为大于1的整数。第一图样包括的每个循环移位间隔均为整数。第一图样可以是从X个图样中确定的,X为正整数。第一时间单元为发送所述参考信号的时间单元。
示例性的,第一图样可以是根据第一指示信息从X个图样中确定的;第一指示信息可以是网络设备向终端设备发送的。
本申请实施例中,第一图样包括的Y个循环移位间隔可以为预定义的整数。在一种可能的实现方式中,可以预先定义X个图样,X为正整数,X个图样中的每个图样包括Y个循环移位间隔,网络设备可以向终端设备发送第一指示信息,第一指示信息用于指示所述X个图样中的一个图样,终端设备可以根据第一指示信息从X个图样中确定第一图样。
X个图样具体如何实现,本申请实施例对此并不限定。举例来说,预先定义的X个图样中的第x个图样包括的Y个循环移位间隔为:
Figure PCTCN2020123442-appb-000141
当第二指示信息指示第一图样为所述X个图样中的第x个图样时,所述第一图样的第y个循环移位间隔
Figure PCTCN2020123442-appb-000142
其中,所述X个图样可以为满足以下条件的任意X个图样:
条件一:对于所有的非负整数i和j,
Figure PCTCN2020123442-appb-000143
为集合{0,1,...,Q-1}中的任意取值。
条件二:对于
Figure PCTCN2020123442-appb-000144
和y∈{1,2,...,Y-1},如果j 1≠j 2,则
Figure PCTCN2020123442-appb-000145
其中,
Figure PCTCN2020123442-appb-000146
条件三:对于
Figure PCTCN2020123442-appb-000147
j∈{0,1,...,Q-1}和y∈{1,2,...,Y-1},
Figure PCTCN2020123442-appb-000148
可选的,
Figure PCTCN2020123442-appb-000149
的取值和
Figure PCTCN2020123442-appb-000150
的取值可以是终端设备根据预定义的规则和/或网络设备配置信息确定的,其中
Figure PCTCN2020123442-appb-000151
可以为集合{0,1,...,Q-1}中的任意取值,不同的x对应的
Figure PCTCN2020123442-appb-000152
的取值可以相同也可以不同,本申请实施例并不限定。示例性的,
Figure PCTCN2020123442-appb-000153
Figure PCTCN2020123442-appb-000154
的取值为满足条件二且属于集合{0,1,...,Q-1}的整数。例如,
Figure PCTCN2020123442-appb-000155
终端设备可以根据
Figure PCTCN2020123442-appb-000156
的取值,以及根据条件三来确定
Figure PCTCN2020123442-appb-000157
的取值。
进一步的,终端设备可以根据
Figure PCTCN2020123442-appb-000158
的取值和
Figure PCTCN2020123442-appb-000159
的取值来确定
Figure PCTCN2020123442-appb-000160
的取值。具体的,
Figure PCTCN2020123442-appb-000161
的取值满足如下公式:
Figure PCTCN2020123442-appb-000162
示例性的,所述X个图样可以为:
Figure PCTCN2020123442-appb-000163
其中D可以为任意整数,例如D=0。
上面的方法中,在相同时频资源上发送参考信号的终端设备可以根据生成参考信号的序列的基序列分成G组,G为基序列个数,属于同一组的终端设备使用相同基序列生成参考信号的序列,属于不同组的终端设备使用不同基序列生成参考信号的序列,网络设备可以给这G组终端设备配置不同的循环移位跳的图样,即不同的x的取值。也就是说,给使用相同基序列确定参考信号的终端设备配置相同的循环移位跳的图样,即相同的x的取值,给使用不同基序列确定参考信号的终端设备配置不同的循环移位的图样,即不同的x的取值。当G小于等于Q时,这G组终端设备中的任意两个属于不同组的终端设备在任意相邻的两次同频域资源上发送的参考信号的循环移位的差值不同。也就是说可以随机化任意两个基于不同基序列生成参考信号的序列的终端设备之间的参考信号之间的干扰,从而可以提高信道测量准确度。当G大于Q时且小于Q 2时,这G组终端设备中的任意两个属于不同组的终端设备在任意相邻的三次同频与资源上发送的参考信号的循环移位的差值不完全相同。也就是说当相干带宽大于等于两倍的参考信号发送周期时,可以通过时域滤波来提高信道测量的准确度。
第六种方法:第一参数是根据第一循环移位步长以及第一时间单元的信息确定的,循环移位值α是根据λ确定的,例如α=λ,其中λ满足以下公式:
Figure PCTCN2020123442-appb-000164
其中,Δhopping为所述第一循环移位步长;
Figure PCTCN2020123442-appb-000165
为第一参数。第一循环移位步长是从Q个循环移位步长中确定的,Q和L等参数的具体含义,可以参考前面公式中的描述,在此不再赘述。
示例性的,第一循环移位步长Δhopping可以为预设集合中的一个值,举例来说,所述预设集合={0,1,2,...,Q-1}。
示例性的,网络设备可以向终端设备发送第二指示信息,第二指示信息用于指示所述第一循环移位步长。终端设备从而可以根据第二指示信息确定所述第一循环移位步长。举例来说,网络设备预先向终端设备配置Q个循环移位步长,第二指示信息用于指示所述Q个循环移位步长中的一个循环移位步长,例如第二指示信息可以为第一循环移位步长在所述Q个循环移位步长中的索引值,终端设备根据所述第二指示信息可以确定第一循环移位步长。
上面的方法中,在相同时频资源上发送参考信号的终端设备可以根据生成参考信号的序列的基序列分成G组,G为基序列个数,属于同一组的终端设备使用相同基序列生成参考信号的序列,属于不同组的终端设备使用不同基序列生成参考信号的序列,当G小于或等于Q时,网络设备可以给这G组终端设备配置不同的Δhopping的取值。也就是说,给 使用相同基序列确定参考信号的终端设备配置相同的Δhopping取值,给使用不同基序列确定参考信号的终端设备配置不同的Δhopping的取值。通过这种方式,可以使得这G组终端设备中的任意两个属于不同组的终端设备在任意相邻的两次同频域资源上发送的参考信号的循环移位的差值不同,从而实现随机化任意两个基于不同基序列生成参考信号的序列的终端设备之间的参考信号之间的干扰,从而可以提高信道测量准确度。
第七种方法:第一参数是根据第一初始循环移位步长、第一循环移位步长差以及第一时间单元的信息确定的,所述第一时间单元可以为一个OFDM符号,所述第一时间单元的信息包括所述第一时间单元所在的系统帧编号以及所述第一时间单元所在的时隙在当前系统帧中的时隙编号,所述循环移位值α是根据λ确定的,例如α=λ,λ满足以下公式:
Figure PCTCN2020123442-appb-000166
Figure PCTCN2020123442-appb-000167
其中,
Figure PCTCN2020123442-appb-000168
为第一参数。
或者,第一参数是根据第一初始循环移位步长、第一循环移位步长差以及所述第一时间单元的信息确定的,所述第一时间单元为一个OFDM符号,所述第一时间单元的信息包括所述第一时间单元所在的系统帧编号、所述第一时间单元所在的时隙在当前系统帧中的时隙编号以及所述第一时间单元在参考信号资源中的符号编号,所述符号编号属于集合
Figure PCTCN2020123442-appb-000169
Figure PCTCN2020123442-appb-000170
为预定义的或者网络设备配置的可以用于发送参考信号的连续的OFDM符号数,所述循环移位值α是根据λ确定的,例如α=λ,λ满足以下公式:
Figure PCTCN2020123442-appb-000171
Figure PCTCN2020123442-appb-000172
其中,上述公式中的各个参数的含义,可以参考前面的描述,在此不再赘述。
示例性的,第一初始循环移位步长Δh init可以为第一预设集合中的一个值,举例来说,所述第一预设集合={0,1,2,...,Q-1}。第一循环移位步长差Δh gap可以为第二预设集合中的一个值,举例来说,所述第二预设集合={0,1,2,...,Q-1}。
在一种可能的实现方式中,网络设备向终端设备发送第三指示信息,通过第三指示信息,向终端设备指示第一初始循环移位步长。举例来说,网络设备预先配置Q个初始循环移位步长,第三指示信息用于指示Q个初始循环移位步长中的一个初始循环移位步长,终端设备从而可以根据第三指示信息从Q个初始循环移位步长中确定第一初始循环移位步长。
相应的,网络设备还可以向终端设备发送第四指示信息,通过第四指示信息,向终端设备指示第一循环移位步长差。举例来说,网络设备预先配置Q个第一循环移位步长差,第四指示信息用于指示Q个第一循环移位步长差中的一个第一循环移位步长差,终端设备从而可以根据第四指示信息从Q个第一循环移位步长差中确定第一循环移位步长差。
需要说明的是,第五种方法至第七种方法中,循环移位值α根据λ确定时,可能存在多种实现方式,例如α=λ;再例如,α=λ/2;再例如,α=λmod 2π。还可能存在其他实现方式,在此不再一一列举。
通过上面的方法,在相同时频资源上发送参考信号的终端设备可以根据生成参考信号的序列的基序列分成G组,G为基序列个数,属于同一组的终端设备使用相同基序列生成参考信号的序列,属于不同组的终端设备使用不同基序列生成参考信号的序列,网络设备可以给这G组终端设备配置不同的初始循环移位步长和/或不同的循环移位步长差。也就是说,给使用相同基序列确定参考信号的终端设备配置相同的初始循环移位步长和循环移位步长差,给使用不同基序列确定参考信号的终端设备配置不同的初始循环移位步长和/或不同的循环移位步长差。当G小于等于Q时,这G组终端设备中的任意两个属于不同组的终端设备在任意相邻的两次同频域资源上发送的参考信号的循环移位的差值不同。也就是说可以随机化任意两个基于不同基序列生成参考信号的序列的终端设备之间的参考信号之间的干扰,从而可以提高信道测量准确度。当G大于Q时且小于Q 2时,这G组终端设备中的任意两个属于不同组的终端设备在任意相邻的三次同频与资源上发送的参考信号的循环移位的差值不完全相同。也就是说当相干带宽大于等于两倍的参考信号发送周期时,可以通过时域滤波来提高信道测量的准确度。
需要说明的是,本申请实施例中,所述第一时间单元可以为时隙,可以为OFDM符号,还可以为子帧或系统帧等时间单元。需要说明的是,第一时间单元的信息包括以下至少一项:所述第一时间单元所在的系统帧编号,第一时间单元所在的时隙在当前系统帧中的时隙编号,第一时间单元所在的符号在当前时隙中的符号编号。具体的,可以包括以下几种情况:
情况1:第一时间单元为子帧,第一时间单元的信息包括第一时间单元所在的系统帧编号;
情况2:第一时间单元为时隙,第一时间单元的信息包括第一时间单元所在的系统帧编号,和/或第一时间单元(即一个时隙)在当前系统帧中的时隙编号;
情况3:第一时间单元为OFDM符号,第一时间单元的信息包括第一时间单元所在的系统帧编号,和/或第一时间单元所在的时隙在当前系统帧中时隙编号,和/或第一时间单元(即一个符号)在当前时隙中的符号编号。
需要说明的是,本申请实施例中,第一时间单元为OFDM符号时,还可能存在情况4。
情况4:第一时间单元为OFDM符号,第一时间单元的信息包括第一时间单元所在的系统帧编号,和/或第一时间单元所在的时隙在当前系统帧中时隙编号,和/或第一时间单元(即一个符号)在当前时隙中的符号编号,和/或第一时间单元(即一个符号)在当前参考信号资源中的符号编号。
以上只是示例,还可能存在其他情况,在此不再一一列举。
通过使用本申请中的循环移位跳(cyclic shift hopping)的方式,可以使终端设备在不同的参考信号测量时刻使用不同的循环移位值,从而使得任意使用不同基序列生成参考信号的序列的两个用户之间的循环移位差值在每个参考信号测量时刻都可以发生变化,也即使得相邻的几次信道估计误差不同,以达到随机化基于不同基序列生成的参考信号的序列之间的干扰的目的,进而提高信道估计准确度。
本申请实施例中,还可以通过其他方式生成参考信号的序列,从而随机化参考信号之 间的干扰,提高信道估计准确度,下面将详细描述。
如图4所示,为本申请实施例提供的一种方法流程示意图。参见图4,该方法包括:
步骤401:生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的。
步骤402:根据所述序列发送参考信号。
其中,参考信号可以为上行探测参考信号(sounding reference signal,SRS),还可以为上行解调参考信号(demodulation reference signal,DMRS),相位跟踪信号等。
步骤401至步骤402可以由终端设备执行。
步骤403:生成参考信号的序列。
步骤404:根据所述序列进行信号检测。
步骤403至步骤404可以由网络设备执行,其中网络设备生成参考信号的序列的具体实现方式,可以和步骤401中的实现方式相同,在此不再赘述。
需要说明的是,终端设备以及网络设备具体如何生成参考信号的序列,生成参考信号的序列的过程,本申请实施例并不限定,在此不再赘述。相应的,网络设备具体如何进行检测,本申请实施例并不限定,在此不再赘述。
需要说明的是,伪随机序列的具体形式,本申请实施例并不限定,例如可以参考公式(13)中描述的伪随机序列。伪随机序列可以根据参考信号的属性信息或者终端设备的属性信息确定。具体的,伪随机序列的初始种子参数,可以根据参考信号的属性信息或者终端设备的属性信息确定,具体可以参考前面的描述,在此不再赘述。
本申请实施例中,参考信号的序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的时,可以存在以下场景。
场景一:循环移位值、序列组号以及序列号是根据伪随机序列确定的。
在该场景中,一种可能的实现方式中,循环移位值α可以满足前面的公式(1)和(2):
Figure PCTCN2020123442-appb-000173
或者,
Figure PCTCN2020123442-appb-000174
其中,θ 1为第一参数;θ 2为第二参数;t 1为第一系数;t 2为第二系数,所述第一系数和所述第二系数均大于0。Z和Q的具体取值,可以参考前面的描述,在此不再赘述。
第一参数和第二参数的具体实现方式,本申请并不限定,例如第一参数θ 1可以满足前面的公式(4)、公式(6)、公式(9)以及公式(11)。第二参数θ 2可以满足前面的公式(3)。
在该场景中,另一种可能的实现方式中,循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000175
或者,
Figure PCTCN2020123442-appb-000176
或者,
Figure PCTCN2020123442-appb-000177
或者,
Figure PCTCN2020123442-appb-000178
其中,
Figure PCTCN2020123442-appb-000179
Figure PCTCN2020123442-appb-000180
Figure PCTCN2020123442-appb-000181
Figure PCTCN2020123442-appb-000182
以上公式中各个参数的含义,可以参考前面公式中的描述,在此不再赘述。
在该场景中,序列组号u可以满足以下公式:
Figure PCTCN2020123442-appb-000183
或者,
Figure PCTCN2020123442-appb-000184
其中,
Figure PCTCN2020123442-appb-000185
Figure PCTCN2020123442-appb-000186
W、A和T为整数;W、A的取值可以为预设的,也可以是网络设备配置的,还可以为通过其他方式确定的,例如,A可以为参考信号的序列标识n ID,W可以等于30;n ID的取值范围可以是{0,1,…,1023}或{0,1,…,65535},c(·)是所述伪随机序列。
在该场景中,所述序列号v满足以下公式:
Figure PCTCN2020123442-appb-000187
或者,
Figure PCTCN2020123442-appb-000188
其中,E和T为正整数;E的取值可以为预设的,也可以为通过其他方式确定,例如,
Figure PCTCN2020123442-appb-000189
Figure PCTCN2020123442-appb-000190
是一个资源块所占的子载波个数。Q可以是参考信号占用的子载波个数
Figure PCTCN2020123442-appb-000191
例如,
Figure PCTCN2020123442-appb-000192
场景二:循环移位值和序列组号是根据伪随机序列确定的,序列号不是根据伪随机序列确定的。
在该场景中,循环移位值可以满足前面的公式(1)、公式(2)以及公式(19)至公式(22)中的任一个;序列组号可以满足前面的公式(23)或公式(24)。
在该场景中,序列号v=0或1,具体取值根据网络设备的配置确定的,或者协议预定义的。例如:协议预定义v=0。
场景三:循环移位值和序列号是根据伪随机序列确定的,序列组号不是根据伪随机序列确定的。
在该场景中,循环移位值可以满足前面的公式(1)、公式(2)以及公式(19)至公式(22)中的任一个;序列号可以满足前面的公式(25)或公式(26)。
在该场景中,序列组号u=A mod W。
场景四:序列组号和序列号是根据伪随机序列确定的,循环移位值不是根据伪随机序列确定的。
在该场景中,序列组号可以满足前面的公式(23)或公式(24);序列号可以满足前 面的公式(25)或公式(26)。
在该场景中,循环移位值α可以满足以下公式:
Figure PCTCN2020123442-appb-000193
其中,n CS是由高层信令配置的。n CS,max是根据高层信令配置信息确定的。
举例来说,假设第一系数和第二系数均等于1,A等于SRS的序列标识
Figure PCTCN2020123442-appb-000194
W等于30,W K等于1000,T等于8,Z等于
Figure PCTCN2020123442-appb-000195
E等于
Figure PCTCN2020123442-appb-000196
以公式(1),公式(4),公式(23)以及公式(25)为例,当参考信号为SRS时,参考信号的序列的循环移位值、序列组号以及序列号是根据伪随机序列确定的时,一种实现方式中,在生成SRS时,只需要将场景一至场景四中相应的公式,替换为下面的公式就可以获得相应的循环移位值、序列组号以及序列号。
循环移位值α是根据伪随机序列确定的时,通过以下公式确定:
Figure PCTCN2020123442-appb-000197
序列组号u是根据伪随机序列确定的时,可以通过以下公式确定:
Figure PCTCN2020123442-appb-000198
序列号v是根据伪随机序列确定的时,可以通过以下公式确定:
Figure PCTCN2020123442-appb-000199
或者,另一种实现方式中,在生成SRS时,只需要将场景一至场景四中相应的公式,替换为下面的公式就可以获得相应的循环移位值、序列组号以及序列号。
循环移位值α是根据伪随机序列确定的时,通过以下公式确定:
Figure PCTCN2020123442-appb-000200
序列组号u是根据伪随机序列确定的时,可以通过以下公式确定:
Figure PCTCN2020123442-appb-000201
序列号v是根据伪随机序列确定的时,可以通过以下公式确定:
Figure PCTCN2020123442-appb-000202
通过本申请实施例中的方法根据伪随机序列确定参考信号的序列的循环移位值、序列组号以及序列号中的至少两项可以使得参考信号的序列在时域上进行跳变,也即实现SRS序列组跳、序列跳、循环移位跳中的至少两种方式,可以有效随机化SRS序列间干扰,进而提高信道估计准确度。例如:通过根据伪随机序列在30个序列组选择一个序列组,根据伪随机序列在序列组内的2个序列中选择一个序列,根据伪随机序列确定循环移位值,可以有效随机化参考信号间干扰,进而提高信道估计准确度。
进一步的,本申请各实施例中,如图2如何根据循环移位值生成参考信号的序列,或者,图3如何根据循环移位值、序列组号以及序列号生成参考信号的序列,本申请实施例并不限定。
举例来说,参考信号为SRS时,长度为M的SRS的序列r u,v(n)可以由基序列
Figure PCTCN2020123442-appb-000203
通过如下公式生成:
Figure PCTCN2020123442-appb-000204
其中,
Figure PCTCN2020123442-appb-000205
Figure PCTCN2020123442-appb-000206
其中,N ZC是基序列
Figure PCTCN2020123442-appb-000207
的长度;α是循环移位值,u是序列组号,v是序列号。j为虚数单位。基序列
Figure PCTCN2020123442-appb-000208
可以是ZC序列生成的序列,例如是ZC序列本身,或者是ZC序列通过循环移位生成的序列。
上述本申请提供的实施例中,分别从各个设备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,网络设备或终端设备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。
本申请实施例中对模块的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。另外,在本申请各个实施例中的各功能模块可以集成在一个处理器中,也可以是单独物理存在,也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现,也可以采用软件功能模块的形式实现。
与上述构思相同,如图5所示,本申请实施例还提供一种装置500用于实现上述方法中网络设备或终端设备的功能。例如,该装置可以为软件模块或者芯片系统。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。该装置500可以包括:处理单元501和通信单元502。
本申请实施例中,通信单元也可以称为收发单元,可以包括发送单元和/或接收单元,分别用于执行上文方法实施例中网络设备或终端设备发送和接收的步骤。
以下,结合图5至图6详细说明本申请实施例提供的通信装置。应理解,装置实施例的描述与方法实施例的描述相互对应,因此,未详细描述的内容可以参见上文方法实施例,为了简洁,这里不再赘述。
通信单元也可以称为收发器、收发机、收发装置等。处理单元也可以称为处理器,处理单板,处理模块、处理装置等。可选的,可以将通信单元502中用于实现接收功能的器件视为接收单元,将通信单元502中用于实现发送功能的器件视为发送单元,即通信单元 502包括接收单元和发送单元。通信单元有时也可以称为收发机、收发器、或收发电路等。接收单元有时也可以称为接收机、接收器、或接收电路等。发送单元有时也可以称为发射机、发射器或者发射电路等。
通信装置500执行上面实施例中图2所示的流程中终端设备的功能时:
处理单元,用于生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
通信单元,用于根据所述序列发送所述参考信号。
通信装置500执行上面实施例中图2所示的流程中网络设备的功能时:
第二方面,本申请提供一种参考信号传输方法,包括:
处理单元,用于生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
通信单元,用于根据所述序列进行信号检测。
通信装置500执行上面实施例中图3所示的流程中终端设备的功能时:
处理单元,用于生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;
通信单元,用于根据所述序列发送所述参考信号。
通信装置500执行上面实施例中图3所示的流程中网络设备的功能时:
处理单元,用于生成参考信号的序列;所述参考信号的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;通信单元,用于根据所述序列进行信号检测。
以上只是示例,处理单元501和通信单元502还可以执行其他功能,更详细的描述可以参考图2至3所示的方法实施例中相关描述,这里不加赘述。
如图6所示为本申请实施例提供的装置600,图6所示的装置可以为图5所示的装置的一种硬件电路的实现方式。该通信装置可适用于前面所示出的流程图中,执行上述方法实施例中终端设备或者网络设备的功能。为了便于说明,图6仅示出了该通信装置的主要部件。
如图6所示,通信装置600包括处理器610和接口电路620。处理器610和接口电路620之间相互耦合。可以理解的是,接口电路620可以为收发器或输入输出接口。可选的,通信装置600还可以包括存储器630,用于存储处理器610执行的指令或存储处理器610运行指令所需要的输入数据或存储处理器610运行指令后产生的数据。
当通信装置600用于实现图2至3所示的方法时,处理器610用于实现上述处理单元501的功能,接口电路620用于实现上述通信单元502的功能。
当上述通信装置为应用于终端设备的芯片时,该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息,该信息是网络设备发送给终端设备的;或者,该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息,该信息是终端设备发送给网络设备的。
当上述通信装置为应用于网络设备的芯片时,该网络设备芯片实现上述方法实施例中网络设备的功能。该网络设备芯片从网络设备中的其它模块(如射频模块或天线)接收信息,该信息是终端设备发送给网络设备的;或者,该网络设备芯片向网络设备中的其它模 块(如射频模块或天线)发送信息,该信息是网络设备发送给终端设备的。
可以理解的是,本申请的实施例中的处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其它通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)等。
本申请的实施例中处理器可以是随机存取存储器(Random Access Memory,RAM)、闪存、只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)等本领域熟知的任何其它形式的存储介质中。
本文中描述的各个实施例可以为独立的方案,也可以根据内在逻辑进行组合,这些方案都落入本申请的保护范围中。
可以理解的是,上述各个方法实施例中,由终端设备实现的方法和操作,也可以由可用于终端设备的部件(例如芯片或者电路)实现,由网络设备实现的方法和操作,也可以由可用于网络设备的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是,上述实现各网元为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。
本文中描述的各个实施例可以为独立的方案,也可以根据内在逻辑进行组合,这些方案都落入本申请的保护范围中。
可以理解的是,上述各个方法实施例中,由终端设备实现的方法和操作,也可以由可用于终端设备的部件(例如芯片或者电路)实现,由网络设备实现的方法和操作,也可以由可用于网络设备的部件(例如芯片或者电路)实现。
上述主要从各个网元之间交互的角度对本申请提供的方案进行了介绍。可以理解的是,上述实现各网元为了实现上述功能,其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本发明的范围。

Claims (38)

  1. 一种信号发送方法,其特征在于,包括:
    生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
    根据所述序列发送所述参考信号。
  2. 一种信号检测方法,其特征在于,包括:
    生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
    根据所述序列进行信号检测。
  3. 根据权利要求1或2所述的方法,其特征在于,所述第一参数是根据伪随机序列确定的;所述伪随机序列是根据所述参考信号的属性信息确定的。
  4. 根据权利要求3所述的方法,其特征在于,所述属性信息包括序列标识;
    或者,所述序列根据ZC序列生成,所述属性信息包括所述ZC序列的根指标。
  5. 根据权利要求1至4任一所述的方法,其特征在于,所述循环移位值α满足以下公式:
    Figure PCTCN2020123442-appb-100001
    或者,
    Figure PCTCN2020123442-appb-100002
    其中,θ 1为所述第一参数;θ 2为所述第二参数;t 1为第一系数;t 2为第二系数,所述第一系数和所述第二系数均不等于0。
  6. 根据权利要求1至5任一所述的方法,其特征在于,所述第一参数θ 1满足以下公式:
    Figure PCTCN2020123442-appb-100003
    其中,
    Figure PCTCN2020123442-appb-100004
    是所述参考信号所在的时隙在系统帧中的时隙编号;
    Figure PCTCN2020123442-appb-100005
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100006
    其中l=0对应的是该时隙中的第一个符号;T为正整数;c(·)为所述伪随机序列,mod为取模运算。
  7. 根据权利要求1至5任一所述的方法,其特征在于,所述第一参数θ 1满足以下公式:
    θ 1=n cs(n S)mod Q;
    其中,
    Figure PCTCN2020123442-appb-100007
    n S为参考信号计数器的计数值;T为正整数;c(·)为所述伪随机序列,mod为取模运算。
  8. 根据权利要求1至5任一所述的方法,其特征在于,所述第一参数θ 1满足以下公式:
    Figure PCTCN2020123442-appb-100008
    其中,
    Figure PCTCN2020123442-appb-100009
    Figure PCTCN2020123442-appb-100010
    是所述参考信号所在的时隙在系统帧中的时隙编号;n f为所述参考信号所在的系统帧编号;
    Figure PCTCN2020123442-appb-100011
    为一个系统帧中的时隙数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100012
    其中l=0对应的是该时隙中的第一个符号;T为正 整数;S为正整数;c(·)为所述伪随机序列,mod为取模运算。
  9. 根据权利要求1所述的方法,其特征在于,所述第一参数是根据第一循环移位间隔确定的,所述第一循环移位间隔为根据第一时间单元的信息从第一图样中确定的,所述第一图样中包括Y个循环移位间隔,Y为大于1的整数;
    或者,所述第一参数为根据第一循环移位步长以及所述第一时间单元的信息确定的;
    或者,所述第一参数为根据第一初始循环移位步长、第一循环移位步长差以及所述第一时间单元的信息确定的;
    所述第一时间单元的信息包括所述第一时间单元所在的系统帧编号,和/或所述第一时间单元所在的时隙在当前系统帧中的时隙编号;所述第一时间单元为所述参考信号所在的时间单元。
  10. 根据权利要求9所述的方法,其特征在于,所述第一参数是根据第一循环移位间隔确定的时,所述循环移位值α是根据λ确定的,其中λ满足以下公式:
    Figure PCTCN2020123442-appb-100013
    其中,
    Figure PCTCN2020123442-appb-100014
    为所述第一循环移位间隔,
    Figure PCTCN2020123442-appb-100015
    为所述第一参数,θ 2为所述第二参数,
    Figure PCTCN2020123442-appb-100016
    为一个系统帧中的时隙数;n f为所述参考信号所在的系统帧编号;
    Figure PCTCN2020123442-appb-100017
    是所述参考信号所在的时隙在当前系统帧中的时隙编号;L为整数;T S为所述参考信号的发送周期;Z为正整数;
    Figure PCTCN2020123442-appb-100018
    为向下取整运算,mod为取模运算。
  11. 根据权利要求1至10任一项所述的方法,其特征在于,所述第二参数θ 2满足以下公式:
    θ 2=K mod Z;
    其中,所述K是根据配置信息确定的。
  12. 根据权利要求11所述的方法,其特征在于,所述Z为
    Figure PCTCN2020123442-appb-100019
    为最大循环移位值。
  13. 根据权利要求1至12任一所述的方法,其特征在于,所述Q为所述参考信号的序列长度,或者所述Q为所述参考信号所占的子载波个数。
  14. 一种信号发送方法,其特征在于,包括:
    生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;
    根据所述序列发送所述参考信号。
  15. 一种信号检测方法,其特征在于,包括:
    生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;
    根据所述序列进行信号检测。
  16. 根据权利要求14或15所述的方法,其特征在于,所述循环移位值根据伪随机序 列确定时,所述循环移位值α满足以下公式:
    Figure PCTCN2020123442-appb-100020
    或者,
    Figure PCTCN2020123442-appb-100021
    其中,θ 1为第一参数,是根据伪随机序列及第一时间单元的信息确定的;θ 2为第二参数,是根据配置信息确定的;t 1为第一系数;t 2为第二系数,所述第一系数和所述第二系数均不等于0,所述Z、Q为正整数;所述第一时间单元为所述参考信号所在的时间单元。
  17. 根据权利要求14至16任一所述的方法,其特征在于,所述序列组号根据伪随机序列确定时,所述序列组号u满足以下公式:
    Figure PCTCN2020123442-appb-100022
    或者,
    Figure PCTCN2020123442-appb-100023
    其中,
    Figure PCTCN2020123442-appb-100024
    Figure PCTCN2020123442-appb-100025
    W、A和T为整数;n f为所述参考信号所在的系统帧编号,
    Figure PCTCN2020123442-appb-100026
    为一个系统帧中的时隙数;
    Figure PCTCN2020123442-appb-100027
    是所述参考信号所在的时隙在系统帧中的时隙编号,
    Figure PCTCN2020123442-appb-100028
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100029
    其中l=0对应的是该时隙中的第一个符号;c(·)是所述伪随机序列,mod为取模运算。
  18. 根据权利要求14至17任一所述的方法,其特征在于,所述序列号根据伪随机序列确定时,所述序列号v满足以下公式:
    Figure PCTCN2020123442-appb-100030
    或者,
    Figure PCTCN2020123442-appb-100031
    其中,E和T为正整数;n f为所述参考信号所在的系统帧编号,
    Figure PCTCN2020123442-appb-100032
    为一个系统帧中的时隙数;
    Figure PCTCN2020123442-appb-100033
    是所述参考信号所在的时隙在系统帧中的时隙编号,
    Figure PCTCN2020123442-appb-100034
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号的符号在当前时隙中的符号编号,
    Figure PCTCN2020123442-appb-100035
    其中l=0对应的是当前时隙中的第一个符号;c(·)是所述伪随机序列。
  19. 一种通信装置,其特征在于,包括
    处理单元,用于生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
    通信单元,用于根据所述序列发送所述参考信号。
  20. 一种通信装置,其特征在于,包括:
    处理单元,用于生成参考信号的序列;所述序列的循环移位值是根据第一参数以及第二参数确定的,所述第一参数为0~Q-1中的一个值,所述第二参数为0~Z-1中的一个值,所述Z、Q为正整数且Z不等于Q;
    通信单元,用于根据所述序列进行信号检测。
  21. 根据权利要求19或20所述的装置,其特征在于,所述第一参数是根据伪随机序 列确定的;所述伪随机序列是根据所述参考信号的属性信息确定的。
  22. 根据权利要求19至21任一所述的装置,其特征在于,所述循环移位值α满足以下公式:
    Figure PCTCN2020123442-appb-100036
    或者,
    Figure PCTCN2020123442-appb-100037
    其中,θ 1为所述第一参数;θ 2为所述第二参数;t 1为第一系数;t 2为第二系数,所述第一系数和所述第二系数均不等于0。
  23. 根据权利要求19至22任一所述的装置,其特征在于,所述第一参数θ 1满足以下公式:
    Figure PCTCN2020123442-appb-100038
    其中,
    Figure PCTCN2020123442-appb-100039
    是所述参考信号所在的时隙在系统帧中的时隙编号;
    Figure PCTCN2020123442-appb-100040
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100041
    其中l=0对应的是该时隙中的第一个符号;T为正整数;c(·)为所述伪随机序列,mod为取模运算。
  24. 根据权利要求19至23任一所述的装置,其特征在于,所述第一参数θ 1满足以下公式:
    θ 1=n cs(n S)mod Q;
    其中,
    Figure PCTCN2020123442-appb-100042
    n S为参考信号计数器的计数值;T为正整数;c(·)为所述伪随机序列,mod为取模运算。
  25. 根据权利要求19至24任一所述的装置,其特征在于,所述第一参数θ 1满足以下公式:
    Figure PCTCN2020123442-appb-100043
    其中,
    Figure PCTCN2020123442-appb-100044
    Figure PCTCN2020123442-appb-100045
    是所述参考信号所在的时隙在系统帧中的时隙编号;n f为所述参考信号所在的系统帧编号;
    Figure PCTCN2020123442-appb-100046
    为一个系统帧中的时隙数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100047
    其中l=0对应的是该时隙中的第一个符号;T为正整数;S为正整数;c(·)为所述伪随机序列,mod为取模运算。
  26. 根据权利要求19或20所述的装置,其特征在于,所述第一参数是根据第一循环移位间隔确定的,所述第一循环移位间隔为根据第一时间单元的信息从第一图样中确定的,所述第一图样中包括Y个循环移位间隔,Y为大于1的整数;
    或者,所述第一参数为根据第一循环移位步长以及所述第一时间单元的信息确定的;
    或者,所述第一参数为根据第一初始循环移位步长、第一循环移位步长差以及所述第一时间单元的信息确定的;
    所述第一时间单元的信息包括所述第一时间单元所在的系统帧编号,和/或所述第一时间单元所在的时隙在当前系统帧中的时隙编号;所述第一时间单元为所述参考信号所在的时间单元。
  27. 根据权利要求26所述的装置,其特征在于,所述第一参数是根据第一循环移位 间隔确定的时,所述循环移位值α是根据λ确定的,其中λ满足以下公式:
    Figure PCTCN2020123442-appb-100048
    其中,
    Figure PCTCN2020123442-appb-100049
    为所述第一循环移位间隔,
    Figure PCTCN2020123442-appb-100050
    为所述第一参数,θ 2为所述第二参数,
    Figure PCTCN2020123442-appb-100051
    为一个系统帧中的时隙数;n f为所述参考信号所在的系统帧编号;
    Figure PCTCN2020123442-appb-100052
    是所述参考信号所在的时隙在当前系统帧中的时隙编号;L为整数;T S为所述参考信号的发送周期;Z为正整数;
    Figure PCTCN2020123442-appb-100053
    为向下取整运算,mod为取模运算。
  28. 根据权利要求19至27任一项所述的装置,其特征在于,所述第二参数θ 2满足以下公式:
    θ 2=K mod Z;
    其中,所述K是根据配置信息确定的。
  29. 根据权利要求19至28任一所述的装置,其特征在于,所述Q为所述参考信号的序列长度,或者所述Q为所述参考信号所占的子载波个数。
  30. 一种通信装置,其特征在于,包括:
    处理单元,用于生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;
    通信单元,用于根据所述序列发送所述参考信号。
  31. 一种通信装置,其特征在于,包括:
    处理单元,用于生成参考信号的序列;所述序列的循环移位值、序列组号以及序列号中的至少两项是根据伪随机序列确定的;
    通信单元,用于根据所述序列进行信号检测。
  32. 根据权利要求30或31所述的装置,其特征在于,所述循环移位值根据伪随机序列确定时,所述循环移位值α满足以下公式:
    Figure PCTCN2020123442-appb-100054
    或者,
    Figure PCTCN2020123442-appb-100055
    其中,θ 1为第一参数,是根据伪随机序列及第一时间单元的信息确定的;θ 2为第二参数,是根据配置信息确定的;t 1为第一系数;t 2为第二系数,所述第一系数和所述第二系数均不等于0,所述Z、Q为正整数;所述第一时间单元为所述参考信号所在的时间单元。
  33. 根据权利要求30至32任一所述的装置,其特征在于,所述序列组号根据伪随机序列确定时,所述序列组号u满足以下公式:
    Figure PCTCN2020123442-appb-100056
    或者,
    Figure PCTCN2020123442-appb-100057
    其中,
    Figure PCTCN2020123442-appb-100058
    Figure PCTCN2020123442-appb-100059
    W、A和T为整数;n f为所述参考信号所在的系统帧编号,
    Figure PCTCN2020123442-appb-100060
    为一个系统帧中的时隙数;
    Figure PCTCN2020123442-appb-100061
    是所述参考信号所在的时隙在系统帧中的时隙编号,
    Figure PCTCN2020123442-appb-100062
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号所在的符号在时隙中的符号编号,
    Figure PCTCN2020123442-appb-100063
    其中l=0对应的是该时隙中的第一个符号;c(·)是所述伪随机序列,mod为取模运算。
  34. 根据权利要求30至33任一所述的装置,其特征在于,所述序列号根据伪随机序列确定时,所述序列号v满足以下公式:
    Figure PCTCN2020123442-appb-100064
    或者,
    Figure PCTCN2020123442-appb-100065
    其中,E和T为正整数;n f为所述参考信号所在的系统帧编号,
    Figure PCTCN2020123442-appb-100066
    为一个系统帧中的时隙数;
    Figure PCTCN2020123442-appb-100067
    是所述参考信号所在的时隙在系统帧中的时隙编号,
    Figure PCTCN2020123442-appb-100068
    为一个时隙中的正交频分复用OFDM符号的个数;l为所述参考信号的符号在当前时隙中的符号编号,
    Figure PCTCN2020123442-appb-100069
    其中l=0对应的是当前时隙中的第一个符号;c(·)是所述伪随机序列。
  35. 一种通信装置,其特征在于,包括处理器和存储器:
    所述处理器,用于执行所述存储器中存储的计算机程序或指令,当所述处理器执行所述计算机程序或指令时,如权利要求1至18中任意一项所述的方法被执行。
  36. 一种可读存储介质,其特征在于,包括计算机程序或指令,当通信装置执行所述计算机程序或指令时,如权利要求1至18中任意一项所述的方法被执行。
  37. 一种芯片,其特征在于,包括处理器,所述处理器与存储器耦合,用于执行所述存储器中存储的计算机程序或指令,当所述处理器执行所述计算机程序或指令时,如权利要求1至18中任意一项所述的方法被执行。
  38. 一种计算机程序产品,其特征在于,包括计算机可读指令,当通信装置读取并执行所述计算机可读指令,使得所述通信装置执行如权利要求1至18中任一项所述的方法。
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