WO2019158092A1 - 通信过程中获知资源单元数量的方法和相关装置 - Google Patents

通信过程中获知资源单元数量的方法和相关装置 Download PDF

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Publication number
WO2019158092A1
WO2019158092A1 PCT/CN2019/074997 CN2019074997W WO2019158092A1 WO 2019158092 A1 WO2019158092 A1 WO 2019158092A1 CN 2019074997 W CN2019074997 W CN 2019074997W WO 2019158092 A1 WO2019158092 A1 WO 2019158092A1
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Prior art keywords
reference signal
demodulation reference
occupied
dmrs
symbol length
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Ceased
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PCT/CN2019/074997
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English (en)
French (fr)
Inventor
王婷
曹永照
王轶
唐浩
唐臻飞
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to KR1020197036755A priority Critical patent/KR102336880B1/ko
Priority to JP2019564097A priority patent/JP6958958B2/ja
Priority to EP22189562.6A priority patent/EP4149037B1/en
Priority to EP19754016.4A priority patent/EP3621240B1/en
Priority to BR112020001018-9A priority patent/BR112020001018A2/pt
Publication of WO2019158092A1 publication Critical patent/WO2019158092A1/zh
Priority to US16/692,891 priority patent/US10951373B2/en
Anticipated expiration legal-status Critical
Priority to US17/180,387 priority patent/US11962526B2/en
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
    • H04J11/0079—Acquisition of downlink reference signals, e.g. detection of cell-ID
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • H04L27/26136—Pilot sequence conveying additional information

Definitions

  • the present application relates to the field of communications and, more particularly, to a method and related apparatus for knowing the number of resource elements in a communication process.
  • the base station can perform data scheduling on the UE. For example, the base station may allocate time domain resources and frequency domain resources to the UE through signaling. Time domain resources and frequency domain resources can be collectively referred to as time-frequency resources.
  • the size of a data block can also be referred to as a transmission block size (TBS).
  • TBS refers to the size of bit information carried on the time-frequency resources scheduled by the base station.
  • the TBS it is necessary to first determine the number of REs occupied by the demodulation reference signal (DMRS). Therefore, how to determine the number of REs occupied by the DMRS is a technical problem to be solved.
  • DMRS demodulation reference signal
  • the present application provides a method and related device for knowing the number of resource units in a communication process, and can determine the number of REs occupied by the demodulation reference signal, thereby helping to determine the TBS, thereby helping to ensure the reliability of the communication.
  • the present application provides a method for knowing the number of resource units in a communication process.
  • the method includes: learning the first information, where the first information includes at least one of the following: a format of the downlink control information, a configuration type of the demodulation reference signal, a symbol length of the demodulation reference signal, a waveform, and a downlink control information.
  • the first information includes at least one of the following: a format of the downlink control information, a configuration type of the demodulation reference signal, a symbol length of the demodulation reference signal, a waveform, and a downlink control information.
  • Temporarily identifying the scrambling mode, the type of the data channel, the symbol length occupied by the data block, and the position of the symbol occupied by the data block and, according to the first information, the number of resource units occupied by the demodulation reference signal corresponding to the first information, There is a correspondence between the information and the number of resource units occupied by the demodulation reference signal.
  • the communication device can directly determine the number of resource units occupied by the demodulation reference signal according to the correspondence between the first information and the number of resource units occupied by the demodulation reference signal, thereby helping to determine the TBS, and thus Help to ensure the reliability of communication.
  • the communication device only needs to know the first information, and the correspondence relationship can be used to know the number of resource units occupied by the solution reference signal.
  • the number of resource units occupied by the demodulation reference signal is obtained according to the first information, including:
  • the downlink control control information format 1_0 the number of resource units occupied by the demodulation reference signal is 4 or 6; and/or,
  • the downlink control information format 0_0 the number of resource units occupied by the demodulation reference signal is 6 or 4.
  • the number of resource units occupied by the demodulation reference signal is obtained according to the first information, including:
  • configuration type of the demodulation reference signal is configuration type 1, it is learned that the number of resource units occupied by the demodulation reference signal is 6; and/or
  • configuration type 2 it is learned that the number of resource units occupied by the demodulation reference signal is 4.
  • the number of resource units occupied by the demodulation reference signal is obtained according to the first information, including:
  • the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 1, the number of resource units occupied by the demodulation reference signal is 6; and/or
  • the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 2, the number of resource units occupied by the demodulation reference signal is 12; and/or,
  • the configuration type of the demodulation reference signal is configuration type 2, and the symbol length occupied by the demodulation reference signal is 1, the number of resource units occupied by the demodulation reference signal is 4; and/or
  • the configuration type of the demodulation reference signal is configuration type 2, and the symbol length occupied by the demodulation reference signal is 2, it is learned that the number of resource units occupied by the demodulation reference signal is 8.
  • the number of resource units occupied by the demodulation reference signal is obtained, including:
  • the number of resource units occupied by the demodulation reference signal is obtained according to the correspondence between the first information and the number of resource elements occupied by the first information and the demodulation reference signal.
  • the method is performed by a terminal device, and the corresponding relationship in the method is configured by the terminal device according to a communication protocol or received from an access network device.
  • the present application provides a communication device.
  • the communication device comprises means for performing the method of any of the possible implementations of the first aspect or the first aspect.
  • the modules included in the communication device can be implemented in software and/or hardware.
  • the present application provides a communication device.
  • the communication device includes at least one processor and a communication interface.
  • the communication interface is configured to perform information interaction between the communication device and other communication devices, and when the program instructions are executed in the at least one processor, implementing the first aspect or any one of the possible implementation manners of the first aspect method.
  • the communication device may also include a memory.
  • Memory is used to store programs and data.
  • the communication device may be an access network device, such as a base station; or may be a terminal device.
  • the application provides a computer readable storage medium.
  • Program code for execution by the communication device is stored in the computer readable storage medium.
  • the program code includes instructions for performing the method of the first aspect or any of the possible implementations of the first aspect.
  • the computer readable medium may store program code for execution by an access network device (e.g., a base station) or a terminal device, the program code including a possible implementation for performing any of the first aspect or the first aspect.
  • an access network device e.g., a base station
  • the program code including a possible implementation for performing any of the first aspect or the first aspect. The instructions in the method.
  • the application provides a computer program product comprising instructions.
  • the communication device is caused to perform the instructions of the method of any of the possible implementations of the first aspect or the first aspect.
  • the computer program product when executed on an access network device (e.g., a base station) or a terminal device, causing the access network device or the terminal device to perform the method of any one of the possible implementations of the first aspect or the first aspect instruction.
  • an access network device e.g., a base station
  • a terminal device causing the access network device or the terminal device to perform the method of any one of the possible implementations of the first aspect or the first aspect instruction.
  • the present application provides a system chip, the system chip includes an input and output interface and at least one processor, the at least one processor is configured to invoke an instruction in a memory to perform the first aspect or the first aspect The operation of the method in any of the possible implementations.
  • system chip may further include at least one memory and a bus for storing instructions executed by the processor.
  • the present application provides a communication system including the communication device described in the third aspect.
  • FIG. 1 is a schematic structural diagram of a communication system to which a method of an embodiment of the present application can be applied;
  • FIG. 2 is a schematic diagram of a pattern of a DMRS according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a pattern of a DMRS according to another embodiment of the present application.
  • FIG. 4 is a schematic diagram of a pattern of a DMRS according to another embodiment of the present application.
  • FIG. 5 is a schematic diagram of a pattern of a DMRS according to another embodiment of the present application.
  • FIG. 6 is a schematic flowchart of a method in an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a communication system according to an embodiment of the present application.
  • FIG. 1 An exemplary structural diagram of a communication system to which the communication method of the embodiment of the present application can be applied is as shown in FIG. 1. It should be understood that the embodiment of the present application is not limited to the system architecture shown in FIG. 1. In addition, the device in FIG. 1 may be hardware, functionally divided software, or a combination of the two.
  • the communication system to which the communication method of the embodiment of the present application can be applied may include the base station 110 and the UE 120.
  • the specific type of the base station 110 is not limited in this embodiment of the present application.
  • the names of devices with base station functions may vary.
  • the foregoing apparatus for providing a wireless communication function to a terminal is collectively referred to as a base station, such as a base station apparatus, a small base station apparatus (pico), and the like in a future network.
  • a base station such as a base station apparatus, a small base station apparatus (pico), and the like in a future network.
  • the base station 110 includes, but is not limited to, an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), and a base station controller (BSC).
  • base transceiver station (BTS) home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (TRP or transmission point, TP), etc.
  • BBU baseband unit
  • WIFI wireless fidelity
  • AP wireless relay node
  • TRP or transmission point, TP transmission point
  • TP transmission point
  • 5G such as NR, gNB in the system
  • TRP or TP transmission point
  • a network node constituting a gNB or a transmission point such as a baseband unit (BBU)
  • DU distributed unit
  • the UE 120 can communicate with one or more core networks via a radio access network (RAN).
  • RAN radio access network
  • a UE may be referred to as an access terminal, a terminal device, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user device.
  • the UE may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), and a wireless communication function.
  • the base station 110 can perform data scheduling on the UE 120. For example, base station 110 can allocate time domain resources and frequency domain resources to UE 120 by signaling. Time domain resources and frequency domain resources can be collectively referred to as time-frequency resources.
  • the base station 110 When the base station 110 performs data scheduling on the UE 120, in addition to allocating time-frequency resources, it is necessary to determine the TBS on these time-frequency resources.
  • the TBS may be calculated according to the number of resource elements (REs) used to transmit data blocks in the time-frequency resources scheduled by the base station.
  • REs resource elements
  • the TBS may be calculated according to the number of REs used to transmit the data block in one resource block (RB) in one slot.
  • the number of REs can be multiplied by the modulation method, and then the code rate and the number of layers are multiplied to obtain a TBS.
  • the RE of the one RB in one slot for transmitting the data block may be the total number of REs transmitted by the allocated data in one RB of the slot, and the RE occupied by the demodulated reference signal in the REs.
  • the number and the number of REs in these REs that are not capable of transmitting data channels are calculated.
  • the REs that cannot transmit the data channel cannot map data. For example, the RE occupied by the channel static information-reference signal (CSI-RS) cannot transmit the data channel.
  • CSI-RS channel static information-reference signal
  • the demodulation reference signal in the present application may include a data demodulation reference signal and/or a phase tracking reference signal (PTRS).
  • the data demodulation reference signal (DMRS) may be a reference signal used for data demodulation, or may be a reference signal used for data channel estimation; the PTRS may be phase tracking and/or phase estimation. Reference signal.
  • the base station 110 may send downlink control information (DCI) and demodulation reference signal for scheduling downlink data transmission to the UE 120.
  • DCI downlink control information
  • the base station 110 may receive the DCI and the solution And adjusting a reference signal, and determining a number of REs occupied by the demodulated reference signal in the DCI scheduled resource, and calculating a TBS according to the quantity and a data block sent by the base station 110 according to the TBS.
  • the base station 110 may send a DCI for scheduling uplink data transmission to the UE on the base station side, and send the demodulation reference signal to the base station 110 on the terminal side. And determining, by the demodulation reference signal, the number of REs occupied by the DCI scheduled resource, calculating the TBS according to the quantity, and sending the uplink data block to the base station 110 according to the TBS; and on the base station side, the base station 110 receives the demodulation reference signal to determine a solution. And adjusting the number of REs occupied by the reference signal in the DCI scheduled resource, calculating the TBS according to the quantity, and receiving the uplink data block sent by the UE 120 according to the TBS.
  • the number of REs occupied by the demodulation reference signal in the embodiment of the present application may refer to the number of possible REs for transmitting the demodulation reference signal among the resources scheduled by the DCI. That is, the number of REs occupied by the demodulation reference signal in the embodiment of the present application may be greater than or equal to the number of REs actually used to transmit the demodulation reference signal in the resources scheduled by the DCI.
  • the number of REs occupied by the demodulation reference signal described in the embodiment of the present application may refer to 12.
  • the DCI is information for performing data scheduling or signal transmission, and may be simply referred to as control information.
  • the data scheduling includes uplink data scheduling and/or downlink data scheduling.
  • Signal transmission includes the transmission and/or reception of signals.
  • the DCI can be transmitted through the high layer signaling or the physical layer signaling. This application does not limit this.
  • the high layer signaling may be radio resource control (RRC) signaling, medium access control (MAC) signaling, or other high layer signaling.
  • RRC radio resource control
  • MAC medium access control
  • the technical solution proposed by the present application mainly includes a method in which the base station 110 and the terminal device 120 determine the number of REs occupied by the demodulation reference signal in the resources scheduled by the DCI.
  • the format of the DCI, the configuration type of the demodulation reference signal, the symbol length occupied by the demodulation reference signal, the position of the symbol occupied by the demodulation reference signal, the waveform, and the DCI (radio network temporary) may be defined in advance.
  • Identifier, RNTI the correspondence between at least one of the scrambling mode, the type of the data channel, the symbol length occupied by the data block, and the position of the symbol occupied by the data block, and the number of REs occupied by the demodulation reference signal.
  • This correspondence is configured to base station 110 and UE 120. In this way, after the base station 110 and the UE 120 learn the at least one type of information, the number of REs occupied by the demodulation reference signal can be known according to the at least one type of information and the corresponding relationship.
  • the waveform may be a waveform of a channel or a waveform of a signal.
  • the waveform of the physical uplink data channel, the waveform of the physical uplink control channel, the waveform of the physical downlink data channel, and the waveform of the physical downlink control channel may be a waveform of a reference signal, such as a waveform of a demodulation reference signal.
  • the waveform can be divided into a single carrier waveform and a multi-carrier waveform.
  • the waveform may be whether a pre-transformation (transform precoding) or the like is enabled.
  • the waveform may include a cyclic prefix (CP)-orthogonal frequency division multiplexing (OFDM) waveform and/or a discrete Fourier transform extended orthogonal frequency division multiplexing (discrete fourier) Transforma-spread-OFDM, DFT-s-OFDM) waveform.
  • CP cyclic prefix
  • OFDM orthogonal frequency division multiplexing
  • DFT-s-OFDM discrete Fourier transform extended orthogonal frequency division multiplexing
  • DCI is a DCI used to schedule the data block
  • the demodulation reference signal is a demodulation reference signal used for transmitting the data block or a time-frequency scheduled in DCI.
  • the base station 110 does not send the information of the DMRS corresponding antenna port (code distribution multiplex (de/ing) group, CDM group) to the UE 120, and the UE 120 may also be based on at least one of the foregoing.
  • the information and the correspondence between the at least one of the above information and the number of REs occupied by the demodulation reference signal can determine the number of REs occupied by the demodulation reference signal.
  • the corresponding relationship configured on the UE 120 may be configured by the UE 120, for example, according to a protocol, or may be configured after being received from the base station 110, for example, by using signaling received from the base station. .
  • the first information may include a format of the DCI, a configuration type of the demodulation reference signal, a symbol length occupied by the demodulation reference signal, a waveform, an RNTI scrambling method of the DCI, a symbol length occupied by the data block, and a data block occupation. At least one of the locations of the symbols.
  • the number of REs occupied by the demodulation reference signal is referred to as the RE overhead of the demodulation reference signal, or may be simply referred to as the overhead of demodulating the reference signal.
  • the number of REs occupied by the demodulation reference signal is 8, it indicates that the number of REs occupied by the demodulation reference signal is 8 REs; and/or, if the RE overhead of the demodulation reference signal is 8, indicating demodulation reference The number of REs occupied by the signal is 8 REs; and/or, if the overhead of demodulating the reference signal is 8, it indicates that the overhead of the demodulation reference signal is 8 REs.
  • the correspondence between the first information and the RE overhead of the demodulation reference signal is defined in advance, and an optional manner includes: configuring, by the first information, a RE overhead of the fixed demodulation reference signal; Or the RE overhead of the demodulation reference signal configured for the first information is set to a fixed value.
  • the RE overhead of the demodulation reference signal can be set to a fixed value of four. Specifically, if the format of the DCI is DCI format 1_0, the RE overhead of the DMRS is 4, and the RE overhead of the demodulation reference signal that can be expressed as the DCI format 1_0 is fixed to 4.
  • the RE overhead of the DMRS is 6
  • the RE overhead of the demodulation reference signal that can be expressed as DCI format 0_0 is fixed to 6.
  • the UE may receive the remaining minimum system information (RMSI), if the UE does not receive the configuration information of the radio reference control (RRC), the UE may
  • the overhead of the RE of the demodulation reference signal is determined according to the actual number of REs transmitted by the DMRS.
  • the overhead of the RE of the demodulation reference signal may be set to a fixed value of 4.
  • the data in the scheduling mode generally only supports transmission of one layer and one antenna port, if
  • the RRC parameter may be a downlink DMRS configuration type (example: DL-DMRS-config-type), and/or a downlink DMRS maximum length (example: DL-DMRS-max-len), and / or, the uplink DMRS configuration type (example: UL-DMRS-config-type), and / or the uplink DMRS maximum length (example: UL-DMRS-max-len)
  • the UE may be in accordance with the aforementioned configured RRC parameters At least one determines the overhead of the RE of the demodulation reference signal.
  • the data transmission scheduled by all formats using the same DCI can use the same DMRS RE overhead, for example, the same DCI format can be DCI format 0_0 or DCI format 1_0.
  • the overhead of the RE of the demodulation reference signal on each physical resource block (PRB) is set to a fixed value. For example, 4 REs or 6 REs.
  • the first information and the RE overhead of the demodulation reference signal may have a one-to-one correspondence. This allows the base station 110 and the UE 120 to learn the RE overhead of the demodulation reference signal according to the correspondence between the first information and the RE overhead of the demodulation reference signal by using only the first information.
  • the following describes how to pre-define the correspondence between the first information and the RE overhead of the demodulation reference signal. That is to say, how to predefine, what kind of first demodulation reference signal corresponding to the first information, how many REs are occupied.
  • the correspondence between the first information and the RE overhead of the demodulation reference signal may include at least one of the following manners:
  • the first information includes a format of the DCI. That is, the base station and/or the UE may learn the number of REs occupied by the demodulation reference signal corresponding to the DCI format according to the DCI format, and the DCI format has a correspondence relationship with the number of REs occupied by the demodulation reference signal.
  • the correspondence between one or more formats of the DCI and the RE overhead of the DMRS may be predefined.
  • the mapping between the DCI and the DMRS's RE overhead may be pre-configured on the base station.
  • the UE may also pre-configure the correspondence, or may receive signaling from the base station, and configure the correspondence according to the signaling.
  • the format of the downlink control information may be different functions for distinguishing downlink control information, or may be content and/or number of bits used to distinguish downlink control information.
  • the different functions of the downlink control information may be: control information for scheduling uplink data or control information for scheduling downlink data, and/or control information in a fallback mode or control information in a normal mode, and/or, Shortened control information or normal control information, and/or control information for single codeword scheduling or control information for multi-codeword scheduling, and/or control information for open-loop data scheduling or control information for closed-loop data scheduling, and many more.
  • format1_0 may be a format of control information for scheduling downlink data
  • format0_0 may be a format of control information for scheduling uplink data
  • format1_0 is a format of control information for scheduling downlink data in a fallback mode and/or a format of control information for scheduling downlink data of a shortened mode and/or a format of control information for scheduling downlink data with a small number of bits
  • format1_1 It is a format of control information for scheduling downlink data in the normal mode and/or control information for scheduling downlink data with a large number of bits.
  • format0_0 is a format of control information for scheduling uplink data in a fallback mode and/or a format of control information for scheduling uplink data of a shortened mode and/or a format of control information for scheduling uplink data with a small number of bits
  • format0_1 It is a format of control information for scheduling uplink data in the normal mode and/or control information for scheduling uplink data with a large number of bits.
  • the RE overhead of the DMRS is X
  • X is an integer
  • the RE overhead of the DMRS is X.
  • the value of X may be any one of 4, 6, 8, 12, 16, or 24.
  • the RE overhead of the DMRS predefined for scheduling the DCI of the uplink data transmission may be the same as the DMRS predefined for the format of the DCI for scheduling the downlink data transmission.
  • the RE overhead of the DMRS is 4; when the format of the DCI is DCI format 0_0, the RE overhead of the DMRS is 4.
  • the RE overhead of the DMRS is 6; when the format of the DCI is DCI format 0_0, the RE overhead of the DMRS is 6.
  • the RE overhead of the DMRS predefined for scheduling the DCI of the uplink data transmission may be different from the overhead of the DMRS predefined for the format of the DCI for scheduling the downlink data transmission.
  • the RE overhead of the DMRS is X1; when the format of the DCI is the format of the DCI for scheduling uplink data transmission, the RE overhead of the DMRS is X2, X1 and X2 is an integer.
  • the value of X1 and/or X2 may be any one of 4, 6, 8, 12, 16, and 24.
  • the base station 110 can signal to the UE 120 to calculate which of the plurality of values the TBS should use.
  • the RE overhead of the DMRS predefined for the same format of the DCI includes 4, 6, 8, 12, etc.
  • the base station 110 informs the UE 120 through high layer signaling or physical layer signaling to calculate the RE overhead of the DMRS used by the TBS to be 6.
  • a plurality of correspondences between a format of the downlink control information and the RE overhead of the DMRS may be predefined, and the base station may notify the UE by signaling, which correspondence is used by the TBS.
  • the correspondence between the format 0_0 and the RE overhead of the DMRS may include at least one of the following correspondences:
  • the RE cost of the DMRS corresponding to the relationship x1:format0_0 is 4;
  • the RE cost of the DMRS corresponding to the relationship x2:format0_0 is 6;
  • the RE cost of the DMRS corresponding to the relationship x3:format0_0 is 8;
  • the RE cost of the DMRS corresponding to the relationship x4:format0_0 is 8;
  • the base station may inform the UE through the high layer signaling and/or the physical layer information, and determine which of the plurality of correspondences of the format of the RE of the DMRS and the DMRS may determine the RE overhead of the DMRS.
  • “00” represents the correspondence x1
  • “01” represents the correspondence x2
  • “10” represents the correspondence x3
  • “11” represents the correspondence x4.
  • the correspondence between the RE1 overhead of format1_0 and the DMRS may include at least one of the following correspondences:
  • the RE cost of the DMRS corresponding to the relationship x1':format1_0 is 4;
  • the RE cost of the DMRS corresponding to the relationship x2':format1_0 is 6;
  • the RE cost of the DMRS corresponding to the relationship x3':format1_0 is 8;
  • the RE cost of the DMRS corresponding to the correspondence x4':format1_0 is 8;
  • the base station may inform the UE through the high layer signaling and/or the physical layer information, and which of the multiple correspondences of the format of the RE1 of the DMRS may be used to determine the RE overhead of the DMRS.
  • the first information includes a configuration type of the demodulation reference signal. That is, the base station and the UE can learn the number of resource units occupied by the demodulation reference signal corresponding to the configuration type of the demodulation reference signal according to the configuration type of the demodulation reference signal, and the configuration type and demodulation of the demodulation reference signal.
  • the number of resource units occupied by the reference signal has a corresponding relationship.
  • the configuration type of the demodulation reference signal is used to indicate the pattern type of the demodulation reference signal and/or the type of the demodulation reference signal.
  • the pattern type may be a single carrier pattern or a multi-carrier pattern, or may be a comb-tooth pattern or a RE pattern.
  • type 1 corresponds to a comb-like pattern or a single-carrier pattern
  • type 2 corresponds to a multi-carrier pattern.
  • the type of the demodulation reference signal may be a single carrier demodulation reference signal or a multi-carrier demodulation reference signal.
  • the type 1 corresponds to a single carrier demodulation reference signal
  • the type 2 corresponds to a multi-carrier demodulation reference signal.
  • the correspondence between one or more DMRS configuration types and the RE overhead of the DMRS may be predefined.
  • the base station 110 can notify the UE 120 of the DMRS configuration type by using the parameter "DMRS-config-type" in the high layer signaling.
  • the DL-DMRS-config-type or the UL-DMRS-config-type may be used to indicate the DMRS type, including the DMRS configuration type1 and the DMRS configuration type2, that is, information that may actually indicate the DMRS pattern.
  • the pattern corresponding to the DMRS configuration type 1 is as shown in FIG. 2, and the pattern corresponding to the DMRS configuration type 2 may be as shown in FIG. 3.
  • the shaded grid indicates the RE occupied by the DMRS.
  • one RB includes 12 subcarriers and 7 symbols, and the DMRS occupies the 1st, 3rd, 5th, 7th, 9th, and 11th REs in the 3rd symbol.
  • one RB includes 12 subcarriers and 7 symbols, and the DMRS occupies the 1st, 2nd, 6th, and 7th REs in the 3rd symbol.
  • the DMRS configuration type may be divided into an uplink DMRS configuration type and a downlink DMRS configuration type, and may be indicated by a parameter “UL-DMRS-config-type” and a parameter “DL-DMRS-config-type” respectively.
  • the configuration type of the uplink DMRS and the configuration type of the downlink DMRS may be indicated by the same parameter, or the configuration type of the DMRS may be determined according to a predefined manner or by other methods. Specifically, the application does not limit this.
  • the following configuration of the DMRS is indicated by the parameter “UL-DMRS-config-type”.
  • the configuration of the downlink DMRS is described by using the parameter “DL-DMRS-config-type”.
  • Y1 and/or Y2 may take any one of 4, 6, 8, 12, 16, 24, and the like.
  • the DMRS transmitted by base station 110 and/or UE 120 may be transmitted only through a single antenna port.
  • one antenna port can correspond to 6 REs
  • UL-DMRS-config-type 1 or DL
  • the RE overhead of DMRS is 6
  • the RE overhead of DMRS is 4.
  • the antenna port is a logical antenna, and one antenna port may be a corresponding layer of data transmission.
  • one antenna port may correspond to one or more physical antennas.
  • the antenna port is defined as the channel that is experienced on one symbol of this antenna port can be inferred by the channel experienced on another symbol of this antenna port.
  • the channels on different symbols of the same antenna port may be the same, or have a linear relationship, or may be obtained by a difference algorithm, and the like, and the specific inference manner is not limited in this application.
  • the demodulation reference signal of one antenna port corresponding to 6 REs may occupy 6 REs, or the demodulation reference signal of one antenna port may be transmitted on 6 REs.
  • Y1 and/or Y2 may have multiple values.
  • the base station 110 may inform the UE 120 which of the plurality of values the RE overhead of the DMRS is.
  • the base station 110 can signal to the UE 120 which of the 6, 12, 18, 24 REs of the DMRS is specifically.
  • the base station 110 can notify the UE 120 that the RE overhead of the DMRS is specifically 4, 8, 12, 16, 20 Or which of the 24s.
  • a plurality of correspondences between a configuration type of the DMRS and an RE overhead of the DMRS may be predefined, and the base station may notify the UE by using signaling to calculate which correspondence relationship the TBS should use.
  • the correspondence between the configuration type 1 of the DMRS and the RE overhead of the DMRS may include at least one of the following correspondences:
  • Correspondence y4 The RE overhead of the DMRS corresponding to the configuration type 1 of the DMRS is 24.
  • the base station may inform the UE by using the high layer signaling and/or the physical layer information, and which of the multiple correspondences of the configuration type 1 of the DMRS and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the correspondence between the configuration type 2 of the DMRS and the RE overhead of the DMRS may include at least one of the following correspondences:
  • Correspondence y4' The RE overhead of the DMRS corresponding to the configuration type 2 of the DMRS is 16.
  • the base station may inform the UE by using the high layer signaling and/or the physical layer information, and which of the multiple correspondences of the configuration type 2 of the DMRS and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the DMRSs between different UEs may be coded (ie, the sequence is orthogonal), or may be time-frequency divided (that is, the positions of the REs occupied by the DMRSs of different UEs are different).
  • the DMRSs of different UEs are time-frequency-split, in order to reduce the interference of the DMRS between the UEs, the data signals are not mapped on the REs occupied by the DMRSs of all the UEs, that is, the DMRSs of all the UEs need to be bypassed during data mapping.
  • the RE overhead of the predefined DMRS shall be the sum of the RE overheads of the DMRSs of all UEs.
  • the base station 110 transmits the DMRS to the UE1 through the antenna port 1000, the DMRS to the UE2 through the antenna port 1001, the DMRS to the UE3 through the antenna port 1002, the DMRS to the UE4 through the antenna port 1003, and the DMRS of the UE1 and the UE2 are code-divided.
  • the DMRSs of the UE3 and the UE4 are code-divided, and the DMRSs of the UE1 and the UE3 are time-frequency divided.
  • the DMRSs of the UE2 and the UE4 are time-frequency-divided.
  • the data of the UE is performed.
  • the resource mapping needs to bypass the total RE overhead of the DMRS on antenna ports 1000, 1001, 1002, and 1003.
  • the DMRS RE overhead is 12 (because DMRS configuration type1, one antenna port can correspond to 6 REs);
  • the RE overhead of DMRS is 8 (because DMRS configuration type2, one antenna port can correspond to 4 REs).
  • the first information includes a configuration type of the demodulation reference signal and a symbol length occupied by the demodulation reference signal. That is to say, according to the configuration type of the demodulation reference signal and the symbol length occupied by the demodulation reference signal, the resources occupied by the demodulation reference signal corresponding to the configuration type of the demodulation reference signal and the symbol length occupied by the demodulation reference signal can be known.
  • the number of units, the configuration type of the demodulation reference signal, and the symbol length occupied by the demodulation reference signal have a correspondence relationship with the number of resource units occupied by the demodulation reference signal.
  • the symbol length occupied by the demodulation reference signal may be the number of symbols occupied by the DMRS, or the symbol length of the resource where the DMRS is located, or the number of symbols of the resource where the DMRS is located.
  • DMRS can occupy 1 symbol, or 2 symbols, and so on.
  • the first information may include a DMRS configuration type and a symbol length occupied by the DMRS.
  • the correspondence between the parameters DMRS-config-type and DMRS-max-len and the RE overhead of the DMRS may be predefined.
  • the DL-DMRS-max-len or the UL-DMRS-max-len may be used to indicate the maximum number of OFDM symbols occupied by the DMRS, such as one or two. Optionally, it may be only indicating the number of symbols occupied by the front load DMRS or the basic DMRS.
  • the RE overhead is Z1 and Z1 is an integer.
  • the RE overhead is Z2 and Z2 is an integer.
  • the RE overhead is Z3 and Z3 is an integer.
  • the RE overhead is Z4 and Z4 is an integer.
  • the values of Z1, Z2, Z3, and Z4 may be the same or different, and are not limited. Any one of Z1, Z2, Z3 and Z4 may have a value of 4, 6, 8, 12, 16, 18 or 24 or the like.
  • the UL-DMRS-config-type, the DL-DMRS-config-type, the UL-DMRS-max-len and/or the DL-DMRS-max-len may be that the base station 110 notifies the UE 120 by using high layer signaling. It can also be pre-configured on the UE 120, which is not limited herein.
  • the uplink DMRS and/or the downlink DMRS may only be transmitted through a single antenna port.
  • the DMRSs of different UEs may be coded (that is, the sequence is orthogonal), or may be time-frequency divided (that is, the positions of the REs occupied by the DMRSs of different UEs are different.
  • the DMRSs of different UEs are time-frequency
  • the data signals are not mapped on the REs occupied by the DMRSs of all the UEs, that is, the REs occupied by the DMRSs of all UEs need to be bypassed during data mapping.
  • the predefined DMRSs are used.
  • the RE overhead should be the sum of the RE costs of the DMRS for all UEs.
  • the base station transmits the DMRS to the UE1 through the antenna port 1000, the DMRS to the UE2 through the antenna port 1001, the DMRS to the UE3 through the antenna port 1002, and the DMRS to the UE4 through the antenna port 1003.
  • the DMRS of the UE1 and the DMRS of the UE2 are code-divided.
  • the DMRS of UE3 and the DMRS of UE4 are code-divided, and the DMRS of UE1 and the DMRS of UE3 are time-frequency divided, and the DMRS of UE2 and the DMRS of UE4 are time-frequency divided, in order to avoid mutual interference of DMRS between UEs.
  • At least one of Z1, Z2, Z3, and Z4 may have multiple values.
  • the base station 110 may notify the UE 120 of the specific RE overhead of the DMRS by signaling.
  • the base station 110 can signal to the UE 120 which of the 6, 12, 18, and 24 RE overheads of the DMRS is specifically.
  • the base station 110 can notify the UE 120 that the RE overhead of the DMRS is specifically 4, 8, 12, 16, 20, and Which of the 24 is.
  • a configuration of a demodulation reference signal and a plurality of correspondences between a symbol length occupied by the demodulation reference signal and an RE overhead of the DMRS may be predefined, and the base station may notify the UE by signaling to determine which correspondence relationship the TBS should use.
  • the correspondence between the configuration type 1 of the demodulation reference signal and the symbol length 1 occupied by the demodulation reference signal and the RE overhead of the DMRS may include at least one of the following correspondences:
  • DMRS configuration type 1 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 6;
  • DMRS configuration type 1 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 12;
  • DMRS configuration type 1 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 18;
  • DMRS configuration type 1 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 24;
  • the base station may inform the UE by using the high layer signaling and/or the physical layer information, and may determine the number of DMRSs by using the configuration type 1 of the DMRS and the correspondence between the symbol length 1 of the DMRS and the RE overhead of the DMRS.
  • the correspondence between the configuration type 1 of the demodulation reference signal and the symbol length 2 occupied by the demodulation reference signal and the RE overhead of the DMRS may include at least one of the following correspondences:
  • the base station may inform the UE through the high layer signaling and/or the physical layer information, and may determine the number of REs of the DMRS by using the configuration type 1 of the DMRS and the correspondence between the symbol length 2 of the DMRS and the RE overhead of the DMRS.
  • the correspondence between the configuration type 2 of the demodulation reference signal and the symbol length 1 occupied by the demodulation reference signal and the RE overhead of the DMRS may include at least one of the following correspondences, such as:
  • DMRS configuration type 2 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 4;
  • DMRS configuration type 2 and DMRS symbol length 1 corresponding to the DMRS RE overhead is 8;
  • Corresponding relationship z4" the DMRS configuration type 2 of the DMRS and the DMRS corresponding to the symbol length 1 of the DMRS have an RE overhead of 16;
  • the base station may inform the UE by using the high layer signaling and/or the physical layer information, and may determine the RE overhead of the DMRS by using the configuration type 2 of the DMRS and the correspondence between the symbol length 1 of the DMRS and the RE overhead of the DMRS.
  • the correspondence between the configuration type 2 of the demodulation reference signal and the symbol length 2 occupied by the demodulation reference signal and the RE overhead of the DMRS may include at least one of the following correspondences:
  • the base station may inform the UE by using the high layer signaling and/or the physical layer information, and may determine the RE overhead of the DMRS by using the configuration type 2 of the DMRS and the correspondence between the symbol length 2 of the DMRS and the RE overhead of the DMRS.
  • the first information may include a waveform. That is to say, the number of resource units occupied by the demodulation reference signal corresponding to the waveform can be known according to the waveform, and the waveform has a corresponding relationship with the number of resource units occupied by the demodulation reference signal.
  • the correspondence between the waveform and the RE overhead of the DMRS may be predefined.
  • the waveform may be a waveform of a channel or a waveform of a signal.
  • the waveform of the physical uplink data channel, the waveform of the physical uplink control channel, the waveform of the physical downlink data channel, and the waveform of the physical downlink control channel may be a waveform of a reference signal, such as a waveform of a demodulation reference signal.
  • the waveform can be divided into a single carrier waveform and a multi-carrier waveform.
  • the waveform may be whether a pre-transformation (transform precoding) or the like is enabled.
  • the waveform is a single carrier, and even if the transform precoding is enabled, the RE overhead of the DMRS is W1, and W1 is an integer.
  • the waveform is a single carrier
  • the DMRS of the configuration type 1 is only supported under the single carrier
  • the RE overhead of the DMRS is 6.
  • the waveform is multi-carrier, that is, when the transform precoding is not enabled, the RE overhead of the DMRS is W2, and W2 is an integer.
  • the RE overhead of the DMRS is 4.
  • the waveform is multi-carrier
  • the DMRS of configuration type 1 can be supported under multiple carriers, the RE overhead of the DMRS is 6.
  • the values of W1 and/or W2 may be any one of 4, 6, 8, 12, 16, and 24.
  • W1 and/or W2 may have multiple values.
  • the base station 110 may inform the UE 120 which of the multiple values of the DMRS's RE overhead.
  • W1 can be predefined as at least one of 6, 12, 18, 24, etc.
  • the base station 110 can signal to the UE 120 which of the 6, 12, 18, 24 REs of the DMRS is specifically.
  • the base station 110 can notify the UE 120 that the RE overhead of the DMRS is specifically 4, 8, 12, 16, 20 Or which of the 24s.
  • a plurality of correspondences between a waveform and an RE overhead of the DMRS may be predefined, and the base station may notify the UE by signaling to determine which correspondence relationship the TBS should use.
  • the correspondence between the waveform and the RE overhead of the DMRS may include at least one of the following correspondences:
  • Correspondence w4 The RE overhead of the corresponding DMRS when the precoding transformation is enabled is 12.
  • the base station may inform the UE through higher layer signaling and/or physical layer information, and which of the plurality of correspondences of the waveform and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the first information may include a symbol length and a waveform occupied by the demodulation reference signal. That is to say, according to the symbol length and waveform occupied by the demodulation reference signal, the number of resource units occupied by the demodulation reference signal corresponding to the symbol length and the waveform occupied by the demodulation reference signal can be known, and the symbol length occupied by the demodulation reference signal can be demodulated. And the waveform has a corresponding relationship with the number of resource units occupied by the demodulation reference signal.
  • the correspondence between the symbol length occupied by the DMRS and the waveform and the RE overhead of the DMRS may be predefined.
  • the values of W3 and/or W4 may be any one of 4, 6, 8, 12, 16, and 24.
  • W3 and/or W4 may have multiple values.
  • the base station 110 may inform the UE 120 which of the multiple values of the DMRS's RE overhead.
  • the base station 110 can signal to the UE 120 which of the 6, 12, 18, and 24 REs of the DMRS is specifically.
  • the base station 110 may notify the UE 120 that the RE overhead of the DMRS is specifically 4, 8, 12, 16, 20 Or which of the 24s.
  • a plurality of correspondences between a waveform and a symbol length of the DMRS and an RE overhead of the DMRS may be predefined, and the base station may notify the UE by signaling to determine which correspondence relationship the TBS should use.
  • the correspondence between the waveform length 1 of the DMRS and the RE overhead of the DMRS for the waveform in which the precoding transformation is not enabled may include at least one of the following correspondences:
  • the base station may inform the UE through higher layer signaling and/or physical layer information, and which of the plurality of correspondences of the waveform and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the correspondence between the waveform length 1 of the DMRS and the RE overhead of the DMRS for the waveform in which the precoding transformation is not enabled may include at least one of the following correspondences:
  • Correspondence relationship w4" When the precoding transformation is not enabled, and the symbol length is 2, the RE overhead of the corresponding DMRS is 36.
  • the base station may inform the UE through higher layer signaling and/or physical layer information, and which of the plurality of correspondences of the waveform and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the correspondence between the symbol length 1 for enabling the precoding transform and the symbol length 1 of the DMRS and the RE overhead of the DMRS may include at least one of the following correspondences:
  • the corresponding relationship w4"' enables the precoding transformation, and when the symbol length is 1, the RE overhead of the corresponding DMRS is 24.
  • the base station may inform the UE through higher layer signaling and/or physical layer information, and which of the plurality of correspondences of the waveform and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the correspondence between the symbol length 2 of the DMRS and the RE overhead of the DMRS for the waveform of the enable precoding transformation may include at least one of the following correspondences:
  • the corresponding relationship w3"" enables the precoding transformation, and the RE cost of the corresponding DMRS is 36 when the symbol length is 2.
  • the corresponding relationship w4"" enables the precoding transformation, and when the symbol length is 2, the RE overhead of the corresponding DMRS is 48.
  • the base station may inform the UE through higher layer signaling and/or physical layer information, and which of the plurality of correspondences of the waveform and the RE overhead of the DMRS may be used to determine the RE overhead of the DMRS.
  • the first information may include a waveform, a configuration type of the demodulation reference signal, and a symbol length occupied by the demodulation reference signal. That is to say, according to the waveform, the configuration type of the demodulation reference signal and the symbol length occupied by the demodulation reference signal, the RE overhead of the demodulation reference signal, the configuration type of the waveform, the demodulation reference signal, and the demodulation reference signal are used. There is a correspondence between the symbol length and the RE overhead of the demodulation reference signal.
  • the first information may include a waveform, a configuration type of the DMRS, and a symbol length occupied by the DMRS, and the correspondence between the waveform, the configuration type of the DMRS, and the symbol length occupied by the DMRS and the RE overhead of the DMRS may be predefined.
  • the RE overhead of the DMRS is W7, and W7 is an integer.
  • the RE overhead of the DMRS is W8, and W8 is an integer.
  • W9 is an integer. In this case, an example of W9 is 4.
  • the RE overhead of the DMRS is W10, and W10 is an integer.
  • An example of W10 is 8.
  • any one of W1 to W10 may have a value of 4, 6, 8, 12, 16, 18, 24, 36 or 48.
  • the values of any two of W1 to W10 may be the same or different values, which is not limited.
  • the DMRSs of different UEs may be coded (that is, the sequence is orthogonal), or may be time-frequency divided (that is, the positions of the REs occupied by the DMRSs of different UEs are different.
  • the DMRSs of different UEs are time-frequency
  • the data signals are not mapped on the REs occupied by the DMRSs of all the UEs, that is, the REs occupied by the DMRSs of all UEs need to be bypassed during data mapping.
  • the predefined DMRSs are used.
  • the RE overhead should be the sum of the RE costs of the DMRS for all UEs.
  • the base station transmits the DMRS to the UE1 through the antenna port 1000, the DMRS to the UE2 through the antenna port 1001, the DMRS to the UE3 through the antenna port 1002, and the DMRS to the UE4 through the antenna port 1003.
  • the DMRS of the UE1 and the DMRS of the UE2 are code-divided.
  • the DMRS of UE3 and the DMRS of UE4 are code-divided, and the DMRS of UE1 and the DMRS of UE3 are time-frequency divided, and the DMRS of UE2 and the DMRS of UE4 are time-frequency divided, in order to avoid mutual interference of DMRS between UEs.
  • any one of W1 to W10 may be predefined to have multiple values.
  • the base station may notify the UE of the specific RE overhead of the DMRS by signaling.
  • the base station can signal to the UE whether the RE overhead of the DMRS is specifically 6, 6, 18 or 24.
  • the base station can notify the UE that the RE overhead of the DMRS is specifically 4, Which of 8, 12, 16, 20 and 24 is used.
  • the first information may include a radio network temporary identifier (RNTI) scrambling manner according to a type of the data channel and/or downlink control information. That is, the RE overhead of the demodulation reference signal, the type of the data channel, and/or the RNTI scrambling mode and demodulation reference of the downlink control information may be learned according to the type of the data channel and/or the RNTI scrambling mode of the downlink control information. There is a correspondence between the RE overheads of the signals.
  • RNTI radio network temporary identifier
  • the correspondence between the type of the data channel and/or the RNTI scrambling mode of the DCI and the RE overhead of the DMRS may be predefined.
  • Multiple types of data channels can be included between the base station and the UE.
  • the type of the data channel may include at least one of an uplink data transmission and a downlink data transmission.
  • the type of the data channel includes at least one of system information, broadcast information, unicast information, and multicast information.
  • some physical downlink sharing channel performs UE unicast data transmission, and some PDSCHs are used to transmit system information or broadcast information or multicast information, and some PDSCHs are used to perform paging information.
  • paging, P transmission
  • some PDSCH may be a random access response (RAR) and the like.
  • the unicast data refers to UE-specific data
  • the multicast information or broadcast information refers to data that multiple UEs can receive simultaneously.
  • PUSCH uplink uplink data sharing
  • some PUSCHs are used for transmitting random access messages 3.
  • the communication process is that the user performs downlink synchronization first, receives the downlink synchronization signal, and after receiving the RRC link state, receives RRC signaling, physical layer signaling, and performs downlink data transmission. After entering the RRC link state, the uplink random access can be performed, and the base station sends a random access response, completes uplink synchronization, and performs uplink data transmission.
  • the UE needs to receive DCI before receiving the PDSCH.
  • the information bits of the DCI include a cyclic redundancy check (CRC).
  • CRC cyclic redundancy check
  • the CRC can be associated with the RNTI.
  • the DCI for remaining minimum system information (RMSI) may be scrambled by a CRC generated according to the RMSI-RNTI.
  • the DCI for paging may be scrambled by a CRC generated according to the P-RNTI.
  • the DCI for the RAR may be scrambled by the CRC generated according to the RA-RNTI.
  • the DCI for the user-level data channel may be scrambled by the CRC generated by the cell (cell, C)-RNTI.
  • the data channel of the DCI scheduling that is scrambled by the P-RNTI or the RA-RNTI may be that the RE overhead of the predefined DMRS is 4 REs or 6 REs.
  • SI-RNRI For a data channel for transmitting RMSI, paging, message 3 and/or RAR, or a data channel scheduled by DCI before radio resource control (RRC) link state or for RMSI-RNTI, SI-RNRI
  • RRC radio resource control
  • SI-RNRI The RE overhead of the DMRS of the data channel of the DCI scheduled by the P-RNTI or the RA-RNTI may be predefined on the UE or may be notified by the base station.
  • the same DMRS RE overhead may be predefined for different data channels, and different DMRS RE overheads may be predefined.
  • the RE cost of the DMRS can be predefined to be 6; for the downlink data scheduling, the RE cost of the predefined DMRS is 4.
  • the data channel after the RRC link state on the UE, and/or the RE overhead of the DMRS configured for the data channel of the DCI scheduled for the C-RNTI scrambling may be predefined on the UE, or may be a base station notification. of.
  • the RE overhead of multiple DMRSs may be predefined for the same data channel, and then the base station notifies the UE of the DMRS's RE overhead by signaling.
  • the first information includes the symbol length occupied by the data block. That is, the number of resource units occupied by the demodulation reference signal corresponding to the symbol length occupied by the data block can be known according to the symbol length occupied by the data block, and the symbol length occupied by the data block and the resource unit dedicated to the demodulation reference signal The quantity has a corresponding relationship.
  • the correspondence between the symbol length occupied by the data block and the RE overhead of the DMRS may be predefined.
  • the RE overhead of the DMRS is 4 or 6. This is because when the symbol length occupied by the data block is less than 7, only the front load DMRS may be transmitted in the time unit (for example, 14 symbols) of the transport data block, and the additional DMRS is not transmitted.
  • the RE overhead of the DMRS is 8 or 12. This is because, when the symbol length occupied by the data block is greater than or equal to 7, the time unit (for example, 14 symbols) of the transport data block may not only transmit the front load DMRS but also the additional DMRS.
  • the front load DMRS refers to the DMRS in the DMRS transmitted in one time unit, and the DMRS in the DMRS transmitted in one time unit.
  • front loaded DMRS can also be called basic DMRS, which can be placed at the beginning or relative position of the data.
  • Additional DMRS may also be referred to as an additional DMRS.
  • the basic DMRS and the additional DMRS may be carried in different symbol positions of the same scheduling unit, and the same scheduling unit includes at least one of a subframe, a time slot, or a minislot. Specially limited.
  • the additional DMRS may be used to improve the accuracy of the channel estimation, and may be applicable to a high-speed moving scenario, and the channel changes on different symbols.
  • an additional DMRS is introduced.
  • FIG. 4 and FIG. 5 A schematic diagram of the front loaded DMRS and additonal DMRS is shown in Figures 4 and 5.
  • the symbols filled with the horizontal lines are the symbols occupied by the basic DMRS, that is, the symbols occupied by the front-loaded DMRS, and the symbols filled with the dots are the symbols occupied by the additional DMRS.
  • the font loaded DMRS in Fig. 4 is on symbol 3 (i.e., the fourth symbol), and the additonal DMRS is on symbol 7 (i.e., the eighth symbol).
  • the font loaded DMRS in Fig. 5 is on symbol 2 (i.e., the third symbol), and the additional DMRS is on symbol 7 (i.e., the eighth symbol).
  • the DMRS overhead when the DMRS overhead is considered, that is, the front-loaded DMRS and the additional DMRS. Because the data is not mapped on the RE of the DMRS.
  • the first information includes the location of the symbol occupied by the data block. That is to say, according to the position of the symbol occupied by the data block, the number of resource units occupied by the demodulation reference signal corresponding to the position of the symbol occupied by the data block can be known, and the position of the symbol occupied by the data block and the demodulation reference signal are dedicated. The number of resource units has a corresponding relationship.
  • the correspondence between the location of the symbol occupied by the data block and the RE overhead of the DMRS may be predefined.
  • the RE symbol of the DMRS is 4 or 6 when the last symbol occupied by the data block is located before the ninth symbol in the time unit (eg, 14 symbols) transmitting the data block.
  • the symbol length occupied by the data block may be less than 7, that is, only the front load DMRS may be transmitted in the time unit of the transport data block, and the additional DMRS may not be transmitted.
  • the last symbol occupied by the data block is located before the ninth symbol in the time unit in which the data block is transmitted. It can be understood that the index of the last symbol occupied by the data block is less than 8.
  • the RE symbol of the DMRS is 8 or 12 when the last symbol occupied by the data block is located after or after the ninth symbol in the time unit (eg, 14 symbols) in which the data block is transmitted.
  • the symbol length occupied by the data block may be greater than or equal to 7, that is, the time unit of the transport data block may not only transmit the front load DMRS but also the additional DMRS.
  • the last symbol occupied by the data block is located after or after the ninth symbol in the time unit in which the data block is transmitted. It can be understood that the index of the last symbol occupied by the data block is greater than or equal to 8.
  • the first information may include the location of the symbols occupied by the additional DMRS and/or the number (or number) of additional DMRSs. That is, the solution corresponding to the position of the symbol occupied by the additional DMRS and/or the number (or number) of the additional DMRS may be obtained according to the position of the symbol occupied by the additional DMRS and/or the number (or number) of the additional DMRS.
  • the number of resource elements occupied by the reference signal is adjusted, and the position of the symbol occupied by the additiaonal DMRS and/or the number (or number) of the additional DMRS have a correspondence relationship with the number of resource units occupied by the demodulation reference signal.
  • the correspondence between the location of the symbol occupied by the additional DMRS and/or the number (or number) of the additional DMRS and the RE overhead of the DMRS may be predefined.
  • the DL-DMRS-add-pos or the UL-DMRS-add-pos may be used to indicate the number of additional DMRSs, or may be used to indicate the number of additional DMRSs, for example, may be 0, 1, 2, 3 At least one of them.
  • the length of the symbol occupied by the front load DMRS is 1, if the number of the additional DMRS is 0, it indicates that the additional DMRS occupies 0 symbols; if the number of the additional DMRS is 1, it indicates that the additional DMRS occupies 1 symbol; If the number of additional DMRSs is 2, it indicates that the additional DMRS occupies 2 symbols; if the number of additional DMRSs is 3, it indicates that the additional DMRS occupies 3 symbols.
  • the symbol length of the front load DMRS is 2, if the number of the additional DMRS is 0, it indicates that the additional DMRS occupies 0 symbols; if the number of the additional DMRS is 1, it indicates that the additional DMRS occupies 2 symbols; If the number of additional DMRSs is 2, it indicates that the additional DMRS occupies 4 symbols; if the number of additional DMRSs is 3, it indicates that the additional DMRS occupies 6 symbols.
  • the DL-DMRS-add-pos or the UL-DMRS-add-pos may also be a location for indicating a symbol occupied by the additional DMRS, such as at least one of 0, 1, 2, and 3.
  • the location of the symbol occupied by the additional DMRS may also be referred to as the location of the symbol occupied by the additional DMRS as the location of the front load DMRS.
  • it can be at least one of 0, 1, 2, and 3.
  • the length of the symbol occupied by the front load DMRS is 1, if the position of the symbol occupied by the additional DMRS is 0, it indicates that the additional DMRS occupies the position of 0 front load DMRS, that is, the additional DMRS occupies 0 symbols; if additional If the location of the occupied symbol is 1, it indicates that the additional DMRS occupies a position of 1 front load DMRS, that is, the additional DMRS occupies 1 symbol; if the position of the symbol occupied by the additional DMRS is 2, it indicates that the additional DMRS occupies 2 front load DMRS The location, that is, the additional DMRS occupies 2 symbols; if the position of the symbol occupied by the additional DMRS is 3, it indicates that the additional DMRS occupies the position of 3 front load DMRSs, that is, the additional DMRS occupies 3 symbols.
  • the length of the symbol occupied by the front load DMRS is 2
  • additional The location of the symbol occupied by the DMRS is 1, indicating that the additional DMRS occupies the position of one front load DMRS, that is, the additional DMRS occupies 2 symbols
  • the position of the symbol occupied by the additional DMRS is 2, it indicates that the additional DMRS occupies 2 front load
  • the location of the DMRS that is, the additional DMRS occupies 4 symbols
  • the position of the symbol occupied by the additional DMRS is 3, it indicates that the additional DMRS occupies the position of 3 front load DMRSs, that is, the additional DMRS occupies 6 symbols.
  • the additional DMRS can be divided into an uplink additional DMRS and a downlink additional DMRS.
  • the position of the symbol occupied by the uplink additional DMRS and the position of the symbol occupied by the downlink additional DMRS may be respectively represented by the parameter "DL-DMRS-add-pos" and the parameter "UL-DMRS-add-pos”.
  • the location of the symbol occupied by the uplink additional DMRS and the location of the symbol occupied by the downlink additional DMRS may be indicated by the same parameter. Specifically, the application does not limit this.
  • the RE overhead of the DMRS is Q1.
  • Q1 is an integer.
  • the RE overhead of the DMRS is Q2.
  • Q2 is an integer.
  • the RE overhead of the DMRS is Q3.
  • Q3 is an integer.
  • the RE overhead of the DMRS is Q4.
  • Q4 is an integer.
  • the RE overhead of the DMRS is 4 or 6.
  • the RE overhead of the DMRS is 8 or 12.
  • the RE overhead of the DMRS is 12 or 18.
  • the RE overhead of the DMRS is 16 or 24.
  • the values of Q1, Q2, Q3, and Q4 may be the same or different, and are not limited.
  • the value of any one of Q1, Q2, Q3 and Q4 may be 4, 6, 8, 12, 16, 18 or 24 or the like.
  • At least one of Q1, Q2, Q3, and Q4 may have multiple values.
  • the base station 110 may notify the UE 120 of the specific RE overhead of the DMRS by signaling.
  • the first information may include a configuration type of the DMRS, a symbol length occupied by the DMRS, and a symbol length occupied by the data block. That is, according to the configuration type of the DMRS, the symbol length occupied by the DMRS and the symbol length occupied by the data block, the demodulation reference signal corresponding to the DMRS configuration type, the symbol length occupied by the DMRS, and the symbol length occupied by the data block can be learned.
  • the number of resource units, the configuration type of the DMRS, the symbol length occupied by the DMRS, and the symbol length occupied by the data block have a correspondence relationship with the number of resource units occupied by the demodulation reference signal.
  • the configuration type of the DMRS, the symbol length occupied by the DMRS, and the symbol length occupied by the data block and the RE overhead of the DMRS may be predefined.
  • P1 is an integer.
  • P2 is an integer.
  • P3 is an integer.
  • P4 is an integer.
  • P5 is an integer.
  • P6 is an integer.
  • P7 is an integer.
  • P8 is an integer.
  • any one of P1 to P8 may take values of 4, 6, 8, 12, 16, 18, 20, 24, 28, 32, 36, and the like.
  • the first information may include a configuration type of the DMRS, a symbol length occupied by the DMRS, a symbol length occupied by the data block, and a position of the symbol occupied by the additional DMRS. That is to say, the correspondence between the configuration type of the DMRS, the symbol length occupied by the DMRS, the symbol length occupied by the data block, and the position of the symbol occupied by the additional DMRS and the RE overhead of the DMRS may be predefined.
  • the DMRS is the DMRS used when receiving the data block.
  • At least one of P1 to P8 may have multiple values.
  • the base station 110 may notify the UE 120 whether the RE overhead of the DMRS is one of the multiple values.
  • the first information may further include a location (DL-DMRS-typeA-pos) of the DMRS in the downlink PDSCH mapping type A.
  • DL-DMRS-typeA-pos 2
  • there may be three additional DMRSs in the time unit of the transport data block so the RE overhead of the predefined DMRS and the DMRS RE of the DL-DMRS-typeA-pos not equal to 2
  • the overhead can be different.
  • the DL-DMRS-typeA-pos may be a location of the DMRS used to indicate the PDSCH mapping type A.
  • the location of the DMRS (the first symbol location of the DMRS) may be the third symbol or the first Four symbols, such as index, can be 2 or 3.
  • the format of the DCI, the configuration type of the demodulation reference signal, the symbol length occupied by the demodulation reference signal, the waveform, the RNTI scrambling mode of the demodulation reference signal, the symbol length occupied by the data block, and the data block occupancy may be predefined.
  • the base station 110 and the UE 120 may configure a correspondence between the first information pre-defined according to the manner and the RE overhead of the demodulation reference signal. .
  • the corresponding relationship configured on the UE 120 may be directly configured, or may be configured after being received from the base station 110.
  • the mapping between the first information predefined by any one of the foregoing manners and the RE overhead of the demodulation reference signal is configured on the base station 110 and the UE 120, and after the first information is learned, the first information and the corresponding relationship may be learned. Demodulating the RE overhead of the reference signal to determine the TBS based on the RE overhead.
  • FIG. 6 A schematic flowchart of a method for determining an RE overhead of a demodulation reference signal according to an embodiment of the present application is shown in FIG. 6. It should be understood that FIG. 6 illustrates the steps or operations of the communication method, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the operations in FIG. 6. Moreover, the various steps in FIG. 6 may be performed in a different order than that presented in FIG. 6, and it is possible that not all operations in FIG. 6 are to be performed.
  • the execution subject of the method shown in FIG. 6 is a communication device in a communication process, and may be, for example, the base station 110 or the UE 120.
  • the first information is obtained, where the first information includes at least one of the following: a format of the downlink control information, a configuration type of the demodulation reference signal, a symbol length occupied by the demodulation reference signal, a waveform, and an RNTI scrambling of the demodulation reference signal.
  • the mode the type of data channel, the symbol length occupied by the data block, and the location of the symbol occupied by the data block.
  • at least one of the locations of the symbols occupied by the data block may be known by the communication device (eg, the base station and the UE) according to communication needs; and/or may be that the communication device as the receiving end is informed by the communication device as the transmitting end of.
  • the base station may notify the terminal of the first information by using signaling.
  • the terminal determines the first information according to the signaling of the base station.
  • the signaling may be high layer signaling or physical layer signaling. Specifically, the application does not limit this.
  • the terminal or the base station can obtain the first information according to the needs of the user or the pre-stored information.
  • the application does not limit this.
  • the knowledge in this application may be referred to as determining, obtaining, obtaining, or confirming, obtaining, and the like.
  • the base station 110 can notify the UE 120 through high layer signaling of the configuration type of the demodulation reference signal.
  • the UE 120 may use various RNTIs to blindly demodulate the reference signal.
  • the corresponding RNTI scrambling mode is the RNTI scrambling mode that needs to be learned.
  • the base station and/or the terminal may learn the first information based on characteristics of the data channel transmitting the data and/or characteristics of the data channel receiving the data.
  • S620 Obtain, according to the first information, a quantity of REs occupied by the demodulation reference signal corresponding to the first information, where the first information has a correspondence relationship with a quantity of resource units occupied by the demodulation reference signal.
  • the number of resource units occupied by the demodulation reference signal corresponding to the first information may include the number of resource units occupied by the reference signal that performs channel estimation and/or demodulation when receiving or transmitting the data block corresponding to the first information.
  • the knowledge in this application may be referred to as determining, obtaining, obtaining, or confirming, obtaining, and the like.
  • the number of REs occupied by the demodulation reference signal described herein may refer to the number of possible REs for transmitting the demodulation reference signal among the resources scheduled by the DCI. That is, the number of REs occupied by the demodulation reference signal in the embodiment of the present application may be greater than or equal to the number of REs actually used to transmit the demodulation reference signal in the resources scheduled by the DCI.
  • the number of resource units occupied by the demodulation reference signal corresponding to the first information may include performing channel estimation and/or when receiving the data block scheduled by the DCI.
  • the number of resource units occupied by the demodulated demodulation reference signal; if the first information includes the symbol length occupied by the data block or the position of the symbol occupied by the data block, the number of resource units occupied by the demodulation reference signal corresponding to the first information A demodulation reference signal for channel estimation and/or demodulation when the data block is received may be included.
  • the base station 110 or the UE 120 when the first information includes the format of the downlink control information, and the base station 110 or the UE 120 is configured with the correspondence between the format of the downlink control information and the RE overhead of the DMRS according to the foregoing design manner, the base station 110 or the UE 120 The DMRS is occupied by the DMRS according to the first information.
  • the number of REs is 6.
  • the DMRS is used according to the first information.
  • the number of REs may include: when the DMRS configuration type is DMRS configuration type 1, the number of REs occupied by the DMRS is 6; and when the DMRS configuration type is DMRS configuration type 2, the number of REs occupied by the DMRS is 4.
  • the first information includes the DMRS configuration type and the symbol length occupied by the DMRS, and the correspondence between the DMRS configuration type and the symbol length occupied by the DMRS and the RE overhead of the DMRS is configured on the base station 110 or the UE 120 according to the foregoing design manner.
  • the number of REs occupied by the DMRS is obtained according to the first information, including: the DMRS configuration type is DMRS configuration type1, and the number of REs occupied by the DMRS is 6 when the symbol length occupied by the DMRS is 1, and the DMRS configuration type is DMRS configuration type1, and when the symbol length of the DMRS is 2, the number of REs occupied by the DMRS is 12; when the DMRS configuration type is DMRS configuration type2, and the symbol length occupied by the DMRS is 1, the number of REs occupied by the DMRS is known as When the DMRS configuration type is DMRS configuration type 2, and the symbol length occupied by the DMRS is 2, the number of REs occupied by the DMRS is 8.
  • the base station 110 and the UE 120 configure the correspondence between the first information and the RE overhead of the DMRS according to any of the foregoing manners, the method for the base station 110 and the UE 120 to learn the RE overhead of the DMRS is similar to the above example. It is no longer traced.
  • the method proposed by the present application enables the UE 120 to learn the RE overhead of the DMRS even if the information indicating the CDM group sent by the base station 110 is not received, so that the TBS can be determined according to the RE overhead.
  • the RE overhead of the DMRS can also be known, and the TBS can be determined, so that the transmission performance can be improved.
  • the base station 110 may notify the UE 120 of the RE overhead of the DMRS by signaling.
  • the signaling may be high layer signaling or physical layer signaling.
  • the base station 110 sends signaling to the UE 120, which is used to indicate that the RE overhead of the DMRS is one of 4, 6, 8, 12, 24, and the like.
  • the base station 110 may configure, by using the high layer signaling, the UE 120 to set multiple values of the RE overhead of the DMRS, and then the base station 110 may further notify the UE 120 that the RE overhead of the DMRS is the multiple values. Which one is so that the UE 120 can determine the TBS.
  • FIG. 7 is a schematic structural diagram of a communication apparatus according to an embodiment of the present application. It should be understood that the communication device 700 illustrated in FIG. 7 is merely an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar to those of the respective modules in FIG. 7, or not including the figure. All modules in 7.
  • the communication device 700 can include a first processing module 710 and a second processing module 720. Communication device 700 can be used to perform the method illustrated in FIG.
  • the first processing module 710 is configured to learn the first information, where the first information includes at least one of the following: a format of the downlink control information, a configuration type of the demodulation reference signal, and a symbol occupied by the demodulation reference signal.
  • a second processing module configured to learn, according to the first information, a quantity of resource units occupied by the demodulation reference signal corresponding to the first information, where the first information is occupied by the demodulation reference signal There is a correspondence between the number of resource units.
  • the second processing module 720 is specifically configured to:
  • the downlink control information format 0_0 the number of resource units occupied by the demodulation reference signal is 6 or 4.
  • the second processing module 720 is specifically configured to:
  • configuration type of the demodulation reference signal is configuration type 1, it is known that the number of resource units occupied by the demodulation reference signal is 6; and/or
  • configuration type 2 it is learned that the number of resource units occupied by the demodulation reference signal is 4.
  • the second processing module 720 is specifically configured to:
  • the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 1, the number of resource units occupied by the demodulation reference signal is 6; and/or
  • the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 2, the number of resource units occupied by the demodulation reference signal is 12; and/or
  • the configuration type of the demodulation reference signal is configuration type 2, and the symbol length occupied by the demodulation reference signal is 1, it is known that the number of resource units occupied by the demodulation reference signal is 4; and/or
  • the configuration type of the demodulation reference signal is configuration type 2, and the symbol length occupied by the demodulation reference signal is 2, it is learned that the number of resource units occupied by the demodulation reference signal is 8.
  • the second processing module 720 is specifically configured to: learn, according to the correspondence between the first information and the first information and the number of resource units occupied by the demodulation reference signal, Adjusts the number of resource elements occupied by the reference signal.
  • FIG. 8 is a schematic structural diagram of a communication device according to an embodiment of the present application. It should be understood that the communication device 800 illustrated in FIG. 8 is merely an example, and the communication device of the embodiment of the present application may further include other modules or units, or include modules similar to those of the respective modules in FIG. 8, or not including the figure. All modules in 8.
  • Communication device 800 includes at least one processor 810 and communication interface 820. Communication device 800 can be used to perform the method illustrated in FIG.
  • the communication interface is for informational interaction with other communication devices, and at least one processor 810 executes the program instructions such that the communication device 800 implements the method illustrated in FIG.
  • the communication device 800 can be an access network device or a terminal device.
  • the corresponding relationship may be that the terminal device is configured according to a communication protocol, or may be received by the terminal device from the access network device.
  • FIG. 9 is a schematic structural diagram of a system chip according to an embodiment of the present application. It should be understood that the system chip 900 shown in FIG. 9 is only an example, and the system chip of the embodiment of the present application may further include other modules or units, or include modules similar to those of the respective modules in FIG. 9, or not including the figure. All modules in 9.
  • System chip 900 includes at least one processor 910 and input and output 920. System chip 900 can be used to perform the method illustrated in FIG.
  • the output output interface is for informational interaction with other communication devices, and at least one processor 910 executes program instructions such that the system chip 900 implements the method illustrated in FIG.
  • FIG. 10 is a schematic structural diagram of a communication system according to an embodiment of the present application. It should be understood that the communication system 1000 illustrated in FIG. 10 is merely an example, and the communication system of the embodiment of the present application may further include other modules or units, or include modules similar to those of the respective modules in FIG. 10, or not including the figure. All modules in 10.
  • Communication system 1000 includes communication device 1010.
  • Communication device 1010 may be communication device 800 shown in FIG.
  • Embodiment 1 A method for knowing the number of resource units in a communication process, the method comprising:
  • the first information includes at least one of the following: a format of the downlink control information, a configuration type of the demodulation reference signal, a symbol length occupied by the demodulation reference signal, a waveform, and the downlink control information
  • the wireless network temporarily identifies the scrambling mode, the type of the data channel, the symbol length occupied by the data block, and the location of the symbol occupied by the data block; and the demodulation corresponding to the first information is learned according to the first information.
  • the number of resource units occupied by the reference signal has a correspondence relationship between the first information and the number of resource units occupied by the demodulation reference signal.
  • Embodiment 2 The method according to the embodiment 1 has a one-to-one correspondence between the first information and the number of resource units occupied by the demodulation reference signal.
  • the method of the embodiment 1 or 2 when the first information includes the format of the downlink control information, the obtaining, according to the first information, a resource unit occupied by the demodulation reference signal
  • the number includes:
  • a downlink control control information format 1_0 the number of resource units occupied by the demodulation reference signal is 4 or 6; and/or, according to the format of the downlink control information, downlink control information
  • the format 0_0 indicates that the number of resource units occupied by the demodulation reference signal is 6 or 4.
  • the method of embodiment 1 or 2 when the first information includes a configuration type of the demodulation reference signal, the obtaining, according to the first information, the occupation of the demodulation reference signal
  • the number of resource units including:
  • configuration type of the demodulation reference signal is configuration type 1, it is known that the number of resource units occupied by the demodulation reference signal is 6; and/or, according to the configuration type of the demodulation reference signal, configuration type 2, It is known that the number of resource units occupied by the demodulation reference signal is 4.
  • the first information includes a configuration type of the demodulation reference signal and a symbol length occupied by the demodulation reference signal, the first according to the first
  • the number of the resource units occupied by the demodulation reference signal is obtained, including: configuring type 1 according to the configuration type of the demodulation reference signal, and the symbol length occupied by the demodulation reference signal is 1,
  • the number of resource units occupied by the demodulation reference signal is 6; and/or, according to the configuration type of the demodulation reference signal is configuration type 1, and the demodulation reference signal occupies a symbol length of 2, the solution is known
  • the number of resource units occupied by the reference signal is 12; and/or, according to the configuration type of the demodulation reference signal is configuration type 2, and the demodulation reference signal occupies a symbol length of 1, the demodulation is known
  • the number of resource units occupied by the reference signal is 4; and/or, according to the configuration type of the demodulation reference signal is configuration type 2, and the demodulation reference signal occupies
  • the obtaining, according to the first information, the number of resource units occupied by the demodulation reference signal comprises: according to the first information And a correspondence between the first information and the number of resource units occupied by the demodulation reference signal, and the number of resource units occupied by the demodulation reference signal is obtained.
  • Embodiment 7 The method according to embodiment 6, wherein the method is performed by a terminal device, and the corresponding relationship is that the terminal device is configured according to a communication protocol or received from an access network device.
  • Embodiment 8 is a communication device, comprising: a first processing module, configured to learn first information, where the first information includes at least one of the following: a format of downlink control information, a configuration type of a demodulation reference signal, a symbol length occupied by the demodulation reference signal, a waveform, a radio network temporary identifier scrambling mode of the downlink control information, a type of the data channel, a symbol length occupied by the data block, and a position of a symbol occupied by the data block; a processing module, configured to learn, according to the first information, a quantity of resource units occupied by the demodulation reference signal corresponding to the first information, where the first information and a resource unit occupied by the demodulation reference signal There is a correspondence between the numbers.
  • the communication device has a one-to-one correspondence between the first information and the number of resource units occupied by the demodulation reference signal.
  • the second processing module is specifically configured to: according to the format of the downlink control information, The downlink control information format 1_0, the number of resource units occupied by the demodulation reference signal is 4 or 6; and/or, according to the format of the downlink control information, the downlink control information format 0_0, the demodulation reference is learned.
  • the number of resource units occupied by the signal is 6 or 4.
  • the second processing module is specifically configured to: according to the demodulation reference signal
  • the configuration type is configuration type 1, and the number of resource units occupied by the demodulation reference signal is 6; and/or, according to the configuration type of the demodulation reference signal is configuration type 2, the demodulation reference signal is known.
  • the number of resource units occupied is 4.
  • Embodiment 12 The communication device according to Embodiment 8 or 9, wherein the first information includes a configuration type of the demodulation reference signal and a symbol length occupied by the demodulation reference signal, the second processing module Specifically, the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 1, and the number of resource units occupied by the demodulation reference signal is 6; Or, according to the configuration type of the demodulation reference signal is configuration type 1, and the symbol length occupied by the demodulation reference signal is 2, and the number of resource units occupied by the demodulation reference signal is 12; and Or, according to the configuration type of the demodulation reference signal is configuration type 2, and the demodulation reference signal occupies a symbol length of 1, it is known that the number of resource units occupied by the demodulation reference signal is 4; and/or According to the configuration type of the demodulation reference signal is configuration type 2, and the symbol length occupied by the demodulation reference signal is 2, it is learned that the number of resource units occupied
  • the communication device according to any one of the embodiments 8 to 12, wherein the second processing module is configured to: occupy the demodulation reference signal according to the first information and the first information
  • the correspondence between the number of resource units is used to know the number of resource units occupied by the demodulation reference signal.
  • Embodiment 14 The communication device according to embodiment 13, wherein the communication device is a terminal device, and the corresponding relationship is that the terminal device is configured according to a communication protocol or received from an access network device.
  • Embodiment 15 is a communication device, comprising: at least one processor and a communication interface, wherein the communication interface is used for information interaction between the communication device and other communication devices, when program instructions are in the at least one processing When executed in the apparatus, the communication device is caused to implement the method as described in any one of embodiments 1 to 7.
  • Embodiment 16 is a computer program storage medium having program instructions, when the program instructions are directly or indirectly executed, such that the method according to any one of embodiments 1 to 7 is as follows
  • the functions on either device are implemented: terminal devices and access network devices.
  • Embodiment 17 is a chip system, the chip system comprising at least one processor, when program instructions are executed in the at least one processor, such that the method according to any one of embodiments 1 to 7 is as follows
  • the functions on any device are implemented: access network devices and terminal devices.
  • Embodiment 18 A communication system, comprising: the communication device as described in Embodiment 15.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code. .

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Abstract

本申请提供通信过程中获知资源单元数量的方法和相关装置。该方法包括：获知第一信息，第一信息包括以下至少一种信息：下行控制信息的格式，解调参考信号的配置类型，解调参考信号占用的符号长度，波形，下行控制信息的无线网络临时标识加扰方式，数据信道的类型，数据块占用的符号长度和数据块占用的符号的位置；根据第一信息，获知与第一信息对应的解调参考信号占用的资源单元的数量，第一信息与解调参考信号占用的资源单元的数量之间具有对应关系。本申请提供的通信过程中获知资源单元数量的方法和相关装置，能够确定解调参考信号占用的RE的数量，从而有助于确定TBS，进而有助于保证通信的可靠性。

Description

通信过程中获知资源单元数量的方法和相关装置
本申请要求于2018年02月13日提交中国国家知识产权局、申请号为201810150365.0、申请名称为“通信过程中获知资源单元数量的方法和相关装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，并且更具体地，涉及通信过程中获知资源单元数量的方法和相关装置。
背景技术
基站和终端设备(user equipment，UE)进行数据通信时，基站可以对UE进行数据调度。例如，基站可以通过信令为UE分配时域资源和频域资源。时域资源和频域资源可以统称为时频资源。
基站对UE进行数据调度时，除了分配时频资源，还需要确定在这些时频资源上传输的数据块的大小。数据块的大小也可以称为传输块大小(transmission block size，TBS)。TBS是指基站调度的时频资源上承载的比特信息的大小。
通常情况下，要想确定TBS，需要先确定解调参考信号(demodulation reference signal，DMRS)占用的RE的数量。因此，如何确定DMRS占用的RE的数量，是丞待解决的技术问题。
发明内容
本申请提供通信过程中获知资源单元数量的方法和相关装置，能够确定解调参考信号占用的RE的数量，从而有助于确定TBS，进而有助于保证通信的可靠性。
第一方面，本申请提供了一种通信过程中获知资源单元数量的方法。该方法包括：获知第一信息，第一信息包括以下至少一种信息：下行控制信息的格式，解调参考信号的配置类型，解调参考信号占用的符号长度，波形，下行控制信息的无线网络临时标识加扰方式，数据信道的类型，数据块占用的符号长度和数据块占用的符号的位置；根据第一信息，获知与第一信息对应的解调参考信号占用的资源单元的数量，第一信息与解调参考信号占用的资源单元的数量之间具有对应关系。
该方法中，通信装置可以直接根据第一信息与解调参考信号占用的资源单元的数量之间的对应关系，获知解调参考信号占用的资源单元的数量，从而有助于确定TBS，进而有助于保证通信的可靠性。
在一种可能的实现方式中，第一信息与解调参考信号占用的资源单元的数量之间是一一对应的。
这种实现方式使得通信装置仅需获知第一信息，就可以利用该对应关系获知解套参考 信号占用的资源单元的数量。
在一种可能的实现方式中，第一信息包括下行控制信息的格式时，根据第一信息，获知解调参考信号占用的资源单元的数量，包括：
根据下行控制信息的格式为下行控制控制信息格式1_0，获知解调参考信号占用的资源单元的数量为4或6；和/或，
根据下行控制信息的格式为下行控制信息格式0_0，获知解调参考信号占用的资源单元的数量为6或4。
在一种可能的实现方式中，第一信息包括解调参考信号的配置类型时，根据第一信息，获知解调参考信号占用的资源单元的数量，包括：
根据解调参考信号的配置类型为配置类型1，获知解调参考信号占用的资源单元的数量为6；和/或
根据解调参考信号的配置类型为配置类型2，获知解调参考信号占用的资源单元的数量为4。
在一种可能的实现方式中，第一信息包括解调参考信号的配置类型和解调参考信号占用的符号长度时，根据第一信息，获知解调参考信号占用的资源单元的数量，包括：
根据解调参考信号的配置类型为配置类型1，且解调参考信号占用的符号长度为1，获知解调参考信号占用的资源单元的数量为6；和/或，
根据解调参考信号的配置类型为配置类型1，且解调参考信号占用的符号长度为2，获知解调参考信号占用的资源单元的数量为12；和/或，
根据解调参考信号的配置类型为配置类型2，且解调参考信号占用的符号长度为1，获知解调参考信号占用的资源单元的数量为4；和/或，
根据解调参考信号的配置类型为配置类型2，且解调参考信号占用的符号长度为2，获知解调参考信号占用的资源单元的数量为8。
在一种可能的实现方式中，根据第一信息，获知解调参考信号占用的资源单元的数量，包括：
根据第一信息和第一信息与解调参考信号占用的资源单元的数量之间的对应关系，获知解调参考信号占用的资源单元的数量。
在一种可能的实现方式中，该方法由终端设备执行，该方法中所述的对应关系是终端设备根据通信协议配置的或是从接入网设备接收的。
第二方面，本申请提供了一种通信装置。该通信装置包括用于执行第一方面或第一方面中任意一种可能的实现方式中的方法的模块。该通信装置包括的模块可以通过软件和/或硬件方式实现。
第三方面，本申请提供了一种通信设备。该通信设备包括至少一个处理器和通信接口。所述通信接口用于所述通信设备与其他通信设备进行信息交互，当程序指令在所述至少一个处理器中执行时，实现第一方面或第一方面中任意一种可能的实现方式中的方法。
可选地，该通信设备还可以包括存储器。存储器用于存储程序和数据。
可选地，该通信设备可以是接入网设备，例如基站；或者可以是终端设备。
第四方面，本申请提供了一种计算机可读存储介质。该计算机可读存储介质中存储用于通信设备执行的程序代码。该程序代码包括用于执行第一方面或第一方面中任意一种可 能的实现方式中的方法的指令。
例如，该计算机可读介质中可以存储用于接入网设备(例如基站)或终端设备执行的程序代码，该程序代码包括用于执行第一方面或第一方面中任意一种可能的实现方式中的方法的指令。
第五方面，本申请提供了一种包含指令的计算机程序产品。当该计算机程序产品在通信设备上运行时，使得通信设备执行第一方面或第一方面中任意一种可能的实现方式中的方法的指令。
例如，该计算机程序产品在接入网设备(例如基站)或终端设备上执行时，使得接入网设备或终端设备执行第一方面或第一方面中任意一种可能的实现方式中的方法的指令。
第六方面，本申请提供了一种系统芯片，该系统芯片包括输入输出接口和至少一个处理器，该至少一个处理器用于调用存储器中的指令，以进行第一方面一方面或第一方面中任意一种可能的实现方式中的方法的操作。
可选地，该系统芯片还可以包括至少一个存储器和总线，该至少一个存储器用于存储处理器执行的指令。
第七方面，本申请提供了一种通信系统，该通信系统包括第三方面中所述的通信设备。
附图说明
图1是可以应用本申请实施例的方法的通信系统的示意性结构图；
图2是本申请一个实施例的DMRS的图案的示意图；
图3是本申请另一个实施例的DMRS的图案的示意图；
图4是本申请另一个实施例的DMRS的图案的示意图；
图5是本申请另一个实施例的DMRS的图案的示意图；
图6是本申请一个实施例的方法的示意性流程图；
图7是本申请一个实施例的通信装置的示意性结构图；
图8是本申请一个实施例的通信设备的示意性结构图；
图9是本申请一个实施例的通信设备的示意性结构图；
图10是本申请一个实施例的通信系统的示意性结构图。
具体实施方式
下面将结合附图，以通信装置为终端设备和基站为例，对本申请中的技术方案进行描述。
可以应用本申请实施例的通信方法的通信系统的示例性结构图如图1所示。应理解，本申请实施例并不限于图1所示的系统架构中，此外，图1中的装置可以是硬件，也可以是从功能上划分的软件或者以上二者的结合。
从图1可知，可以应用本申请实施例的通信方法的通信系统可以包括基站110和UE 120。
应理解，本申请实施例对基站110的具体类型不作限定。采用不同无线接入技术的系统中，具备基站功能的设备的名称可能会有所不同。为方便描述，本申请所有实施例中，上述为终端提供无线通信功能的装置统称为基站，例如未来网络中的基站设备、小基站设 备(pico)等。
基站110包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、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，如，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(BBU)，或，分布式单元(DU，distributed unit)等。
UE 120可以经无线接入网(radio access network，RAN)与一个或多个核心网(core network)进行通信。UE可称为接入终端、终端设备、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。UE可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它设备、车载设备、可穿戴设备或物联网、车辆网中的终端设备以及未来网络中的任意形态的终端设备等。
基站110和UE 120进行数据通信时，基站110可以对UE 120进行数据调度。例如，基站110可以通过信令为UE 120分配时域资源和频域资源。时域资源和频域资源可以统称为时频资源。
基站110对UE 120进行数据调度时，除了分配时频资源，还需要确定在这些时频资源上的TBS。
TBS可以根据基站调度的时频资源中用于传输数据块的资源单元(resource element。RE)的数量计算得到。
例如，基站以时隙(slot)为单位对UE进行调度时，可以根据一个时隙中的一个资源块(resource block，RB)中用于传输数据块的RE的数量来计算TBS。再例如，可以将该RE的数量乘上调制方式，再乘上码率以及层数，从而得到TBS。
其中，一个时隙中的一个RB中用于传输数据块的RE可以通过该时隙中的一个RB中的分配的数据传输的RE的总数量、这些RE中被解调参考信号占用的RE的数量以及这些RE中被其他不能传输数据信道的RE的数量来计算得到。这些不能传输数据信道的RE上不能映射数据，例如，信道状态信息参考信号(channel static information-reference signal，CSI-RS)占用的RE不能传输数据信道。
也就是说，要想确定TBS，需要先确定用于传输数据块的RE的数量；而确定用于传输数据块的RE的数量，需要先确定解调参考信号占用的RE的数量。
本申请中的解调参考信号可以包括数据解调参考信号和/或相位跟踪参考信号(phase tracking reference signal，PTRS)。其中，数据解调参考信号(Demodulation Reference Signa，DMRS)可以是用于进行数据解调的参考信号，也可以是用于数据信道估计的参考 信号；PTRS可以是进行相位跟踪和/或相位估计的参考信号。
基站110与UE 120之间进行下行数据块的传输时，在基站侧，基站110可以向UE 120发送用于调度下行数据传输的下行控制信息(down-link control information，DCI)和解调参考信号，并确定该DCI调度的资源中被解调参考信号占用的RE的数量，以及根据该数量计算TBS和根据该TBS向UE 120发送数据块；在终端侧，UE 120可以接收该DCI和该解调参考信号，并确定该DCI调度的资源中被解调参考信号占用的RE的数量，以及根据该数量计算TBS和根据该TBS接收基站110发送的数据块。
基站110与UE 120之间进行上行数据块的传输时，在基站侧，基站110可以向UE发送用于调度上行数据传输的DCI；在终端侧，UE 120可以向基站110发送解调参考信号，并确定解调参考信号在该DCI调度的资源中占用的RE的数量、根据该数量计算TBS以及根据该TBS向基站110发送上行数据块；在基站侧，基站110接收解调参考信号，确定解调参考信号在DCI调度的资源中占用的RE的数量，根据该数量计算TBS以及根据该TBS接收UE 120发送的上行数据块。
应理解，本申请实施例中所述的解调参考信号占用的RE的数量可以指DCI调度的资源中可能的用于传输解调参考信号的RE的数量。也就是说，本申请实施例中所述的解调参考信号占用的RE的数量可以大于或等于DCI调度的资源中实际用于传输解调参考信号的RE的数量。
例如，DCI调度的资源中可以用于传输解调参考信号的RE有12个，但是在该资源中实际传输了解调参考信号的RE可以只有8个。本申请实施例中所述的解调参考信号占用的RE的数量可以指12。
DCI是用于进行数据调度或信号传输的信息，可以简称为控制信息。其中，数据调度包括上行数据调度和/或下行数据调度。信号传输包括信号的发送和/或接收。DCI可以通过高层信令传输，也可以通过物理层信令传输，本申请对此不做限定。
高层信令可以是无线资源控制(radio resource control，RRC)信令，媒体接入控制(medium access control，MAC)信令，或其他高层信令等。
本申请提出的技术方案中主要包括基站110和终端设备120确定解调参考信号在DCI调度的资源中占用的RE的数量的方法。
本申请实施例的方法中，可以预先定义DCI的格式，解调参考信号的配置类型，解调参考信号占用的符号长度，解调参考信号占用的符号的位置，波形，DCI的(radio network temporary identifier，RNTI)加扰方式，数据信道的类型，数据块占用的符号长度和数据块占用的符号的位置中至少一种信息与解调参考信号占用的RE的数量之间的对应关系，再将该对应关系配置到基站110和UE 120上。这样，基站110和UE 120获知该至少一种信息后，即可以根据该至少一种信息和该对应关系获知解调参考信号占用的RE的数量了。
可选的，波形可以是信道的波形，也可以是信号的波形。比如物理上行数据信道的波形，物理上行控制信道的波形，物理下行数据信道的波形，物理下行控制信道的波形等。比如可以是参考信号的波形，比如解调参考信号的波形等。
可选的，波形可以分为单载波波形，多载波波形。可选的，波形可以是是否使能预编码变换(transform precoding)等。可选地，该波形可以包括循环前缀(cyclic prefix, CP)-正交频分复用(orthogonal frequency division multiplexing，OFDM)波形和/或离散傅里叶变换扩展正交频分复用(discrete fourier transforma-spread-OFDM，DFT-s-OFDM)波形。
其中，数据块、解调参考信号和DCI之间的关系为：DCI为用于调度该数据块的DCI，解调参考信号为传输该数据块使用的解调参考信号或在DCI调度的时频资源上发送的解调参考信号。
本申请实施例中，基站110不向UE 120发送DMRS对应天线端口所在的(码分复用组(code distribution Multiplex(de/ing)group,CDM group)信息，UE 120也可以根据上述至少一种信息以及上述至少一种信息与解调参考信号占用的RE的数量之间的对应关系即可以确定出解调参考信号占用的RE的数量。
可选地，UE 120上配置的该对应关系可以是UE 120上自身配置好的，比如根据协议预定义的，也可以是从基站110接收后配置的，比如通过从基站接收的信令确定的。
为了后续描述方便，将上述至少一种信息称为第一信息。也就是说，第一信息可以包括DCI的格式、解调参考信号的配置类型、解调参考信号占用的符号长度、波形、DCI的RNTI加扰方式、数据块占用的符号长度和数据块占用的符号的位置中至少一种信息。
为了后续描述方便，将解调参考信号占用的RE的数量称为解调参考信号的RE开销，或者也可以简称为解调参考信号的开销。
比如，如果解调参考信号占用的RE的数量为8，则表明解调参考信号占用的RE数量为8个RE；和/或，如果解调参考信号的RE开销为8，则表明解调参考信号占用的RE数量为8个RE；和/或，如果解调参考信号的开销为8，则表明解调参考信号的开销为8个RE。
可选地，本申请实施例中，预先定义第一信息与解调参考信号的RE开销的对应关系，一种可选方式包括：为第一信息配置固定的、解调参考信号的RE开销；或者为第一信息配置的解调参考信号的RE开销设置为固定的值。
例如，对于某种DCI格式，解调参考信号的RE开销可以设置固定值为4。具体可以为，预定义“DCI的格式为DCI format 1_0时，DMRS的RE开销为4”，可以表示为DCI format 1_0的解调参考信号的RE开销固定为4。
例如，预定义“DCI的格式为DCI format 0_0时，DMRS的RE开销为6”，可以表示为DCI format 0_0的解调参考信号的RE开销固定为6。
可选的，对于本申请实施例，针对剩余最小系统信息(remaining minimum system information，RMSI)的接收，在UE没有接收到无线资源控制(radio reference control，RRC)的配置信息的情况下，UE可以根据实际的DMRS传输的RE数确定解调参考信号的RE的开销，比如可以设置解调参考信号的RE的开销为固定的值4。
可选的，对于本申请实施例，对于DCI的格式为DCI format 0_0或DCI format 1_0调度的单播(unicast)数据，因为该调度方式下的数据通常仅仅支持一个层一个天线端口的传输，假如UE被配置了RRC参数，比如该RRC参数可以是下行DMRS配置类型(示例：DL-DMRS-config-type)，和/或，下行DMRS最大长度(示例：DL-DMRS-max-len)，和/或，上行DMRS配置类型(示例：UL-DMRS-config-type)，和/或，上行DMRS最大长度(示例：UL-DMRS-max-len)，UE可以根据前述被配置的RRC参数中的至少一个来确定解 调参考信号的RE的开销。可选的，考虑到系统设计和实现更加简洁和统一，对所有使用相同的DCI的格式调度的数据传输可以使用相同的DMRS的RE开销，比如相同的DCI格式可以是DCI format 0_0或DCI format 1_0。一种可能的方式是，对于DCI format 0_0或DCI format 1_0调度的数据传输，在每一个物理资源块(physical resource block，PRB)上的解调参考信号的RE的开销被设置为固定的值，比如4个RE或6个RE。
本申请实施例的方法中，可选地，第一信息与解调参考信号的RE开销之间可以是一一对应的。这使得基站110和UE 120仅用获知第一信息，就可以根据第一信息与解调参考信号的RE开销之间的对应关系，获知解调参考信号的RE开销。
下面介绍如何预定义第一信息与解调参考信号的RE开销之间的对应关系。也就是说，如何预定义，什么样的第一信息对应的解调参考信号，占用多少个RE。第一信息与解调参考信号的RE开销之间的对应关系可以包括如下方式中的至少一种：
在一种可能的设计方式中，第一信息包括DCI的格式(format)。也就是说，基站和/或UE可以根据DCI格式获知与DCI格式对应的解调参考信号占用的RE的数量，该DCI格式与解调参考信号占用的RE的数量之间具有对应关系。
可选的，可以预定义DCI的一个或多个格式与DMRS的RE开销之间的对应关系。基站上可以预先配置好DCI与DMRS的RE开销之间的对应关系，UE上也可以预先配置好该对应关系，也可以从基站接收信令，根据该信令配置该对应关系。
可选的，下行控制信息的格式可以是用于区分下行控制信息的不同功能，也可以是用于区分下行控制信息的内容和/或比特数。
可选的，下行控制信息的不同功能可以是指调度上行数据的控制信息或调度下行数据的控制信息，和/或，回退模式下的控制信息或正常模式下的控制信息，和/或，缩短的控制信息或正常的控制信息，和/或，单码字调度的控制信息或多码字调度的控制信息等，和/或，开环数据调度的控制信息或闭环数据调度的控制信息，等等。
比如，format1_0可以是用于调度下行数据的控制信息的格式，format0_0可以是调度上行数据的控制信息的格式。
比如，format1_0是用于回退模式下调度下行数据的控制信息的格式和/或缩短模式的调度下行数据的控制信息的格式和/或比特数较少的调度下行数据的控制信息的格式，format1_1是用于正常模式下调度下行数据的控制信息的格式和/或比特数较多的调度下行数据的控制信息的格式。
比如，format0_0是用于回退模式下调度上行数据的控制信息的格式和/或缩短模式的调度上行数据的控制信息的格式和/或比特数较少的调度上行数据的控制信息的格式，format0_1是用于正常模式下调度上行数据的控制信息的格式和/或比特数较多的调度上行数据的控制信息的格式。
例如，可以预定义：DCI的格式为回退(fallback)DCI的格式(格式)时，DMRS的RE开销为X，X为整数。
例如，可以预定义：DCI的格式为DCI format 0_0或DCI format 1_0时，DMRS的RE开销为X。可选的，X的取值可以是4，6，8，12，16或24等中任意一个。
可选的，为调度上行数据传输的DCI的格式预定义的DMRS的RE开销，与为调度下行数据传输的DCI的格式预定义的DMRS的开销可以相同。
例如，可以预定义：DCI的格式为DCI format 1_0时，DMRS的RE开销为4；DCI的格式为DCI format 0_0时，DMRS的RE开销为4。
例如，可以预定义：DCI的格式为DCI format 1_0时，DMRS的RE开销为6；DCI的格式为DCI format 0_0时，DMRS的RE开销为6。
可选的，为调度上行数据传输的DCI的格式预定义的DMRS的RE开销，与为调度下行数据传输的DCI的格式预定义的DMRS的开销可以不同。例如，可以预定义：DCI的格式为调度下行数据传输的DCI的格式时，DMRS的RE开销为X1；DCI的格式为调度上行数据传输的DCI的格式时，DMRS的RE开销为X2，X1和X2均为整数。X1和/或X2的取值可以是4、6、8、12、16和24等中任意一个。
例如，可以预定义：DCI的格式为DCI format 1_0时，DMRS的RE开销为4；DCI的格式为DCI format 0_0时，DMRS的RE开销为6。可选的，也可以为DCI的同一个格式预定义多个DMRS的RE开销取值。这种情况下，基站110可以通过信令告知UE 120计算TBS应使用这多个取值中的哪一个值。
例如，为DCI的同一个格式预定义的DMRS的RE开销包括4、6、8、12等，基站110通过高层信令或者物理层信令告知UE 120计算TBS使用的DMRS的RE开销为6。
可选的，可以预定义一个下行控制信息的格式与DMRS的RE开销的多个对应关系，基站可以通过信令告知UE计算TBS应使用哪个对应关系。
例如，针对format0_0与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系x1：format0_0对应的DMRS的RE开销为4；
对应关系x2：format0_0对应的DMRS的RE开销为6；
对应关系x3：format0_0对应的DMRS的RE开销为8；
对应关系x4：format0_0对应的DMRS的RE开销为8；
基站可以通过高层信令和/或物理层信息告知UE，可以使用format0_0与DMRS的RE开销的这多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系x1，“01”代表对应关系x2，“10”代表对应关系x3，“11”代表对应关系x4。
例如，针对format1_0与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系x1’：format1_0对应的DMRS的RE开销为4；
对应关系x2’：format1_0对应的DMRS的RE开销为6；
对应关系x3’：format1_0对应的DMRS的RE开销为8；
对应关系x4’：format1_0对应的DMRS的RE开销为8；
基站可以通过高层信令和/或物理层信息告知UE，可以使用format1_0与DMRS的RE开销的这多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系x1’，“01”代表对应关系x2’，“10”代表对应关系x3’，“11”代表对应关系x4’。
在一种可能的设计方式中，第一信息包括解调参考信号的配置类型(configuration type)。也就是说，基站和UE可以根据解调参考信号的配置类型，获知与解调参考信号 的配置类型对应的解调参考信号占用的资源单元的数量，该解调参考信号的配置类型与解调参考信号占用的资源单元的数量具有对应关系。
可选的，解调参考信号的配置类型用于指示解调参考信号的图案类型和/或解调参考信号的类型。
可选的，图案类型可以是单载波的图案或多载波的图案，也可以是梳齿状的图案或RE的图案。比如类型1对应梳齿状的图案或者单载波的图案，类型2对应多载波的图案。
可选的，解调参考信号的类型可以是单载波的解调参考信号或多载波的解调参考信号。比如类型1对应者单载波的解调参考信号，类型2对应多载波的解调参考信号。
例如，可以预定义一种或多种DMRS configuration type与DMRS的RE开销之间的对应关系。
比如，基站110可以通过高层信令中的参数“DMRS-config-type”通知UE 120 DMRS configuration type。
其中，DL-DMRS-config-type或UL-DMRS-config-type可以是用于指示DMRS type，包括DMRS configuration type1和DMRS configuration type2，即实际可以指示的是DMRS图案的信息。
可选的，DMRS configuration type1对应的图案如图2所示，DMRS configuration type2对应的图案可以如图3所示。图2和图3中，斜线的格子表示DMRS占用的RE。
图2中，一个RB包括12个子载波和7个符号，DMRS占用第3个符号中的第1个、第3个、第5个、第7个、第9个和第11个RE。
图3中，一个RB包括12个子载波和7个符号，DMRS占用第3个符号中的第1个、第2个、第6个和第7个RE。
可选的，DMRS configuration type可以分为上行的DMRS configuration type和下行的DMRS configuration type，可以分别通过参数“UL-DMRS-config-type”和参数“DL-DMRS-config-type”指示。或者也可以上行DMRS的配置类型和下行DMRS的配置类型用同一个参数指示，或者，也可以是根据预定义的方式或者其他方式确定DMRS的配置类型，具体的，本申请对此不做限定。
下面以上行DMRS的配置类型通过参数“UL-DMRS-config-type”指示，下行DMRS的配置类型通过参数“DL-DMRS-config-type”指示为例进行说明。
例如，可以预定义：UL-DMRS-config-type＝1或DL-DMRS-config-type＝1时，DMRS的RE开销为Y1；UL-DMRS-config-type＝2或DL-DMRS-config-type＝2时，DMRS的RE开销为Y2，Y1和Y2为整数。
可选的，Y1和/或Y2可以取4、6、8、12、16、24等中任意一值。
可选地，基站110和/或UE 120传输的DMRS可以仅是通过单天线端口(port)传输的。这种情况下，由于DMRS configuration type1下，一个天线端口可以对应6个RE，DMRS configuration type2下，一个天线端口可以对应4个RE，则可以预定义：UL-DMRS-config-type＝1或DL-DMRS-config-type＝1时，DMRS的RE开销6；UL-DMRS-config-type＝2或DL-DMRS-config-type＝2时，DMRS的RE开销为4。
其中，如果配置参数UL-DMRS-config-type＝1或DL-DMRS-config-type＝1时，即DMRS配置类型为DMRS配置类型1(DMRS configuration type1)；如果配置参数 UL-DMRS-config-type＝2或DL-DMRS-config-type＝2时，即DMRS配置类型为DMRS配置类型2(DMRS configuration type2)。
其中，天线端口是逻辑上的天线，一个天线端口可以是对应一层数据的传输。
可选的，一个天线端口可以对应一个或者多个物理天线。
可选的，天线端口定义为在这个天线端口的一个符号上经历的信道可以通过这个天线端口的另一个符号上经历的信道推断得到。比如同一个天线端口的不同符号上的信道可以是相同，或具有线性关系，或可以通过差值算法得到，等等，具体的推断方式，本申请对此不做限定。
其中，一个天线端口对应6个RE可以是一个天线端口的解调参考信号占用6个RE，也可以是一个天线端口的解调参考信号在6个RE上传输。
可选地，Y1和/或Y2可以有多个取值。当Y1和/或Y2有多个取值时，基站110可以通过信令告知UE 120 DMRS的RE开销为这多个取值中的哪一个。
例如，预定义了Y1可以为6，12，18，24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为6、12、18、24中的哪一个。
例如，预定义了Y2可以为4，8，12，16，20或24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为4、8、12、16、20或24中的哪一个。
可选的，可以预定义一个DMRS的配置类型与DMRS的RE开销的多个对应关系，基站可以通过信令告知UE计算TBS应使用哪个对应关系。
例如，针对DMRS的配置类型1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系y1：DMRS的配置类型1对应的DMRS的RE开销为6；
对应关系y2：DMRS的配置类型1对应的DMRS的RE开销为12；
对应关系y3：DMRS的配置类型1对应的DMRS的RE开销为18；
对应关系y4：DMRS的配置类型1对应的DMRS的RE开销为24。
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型1与DMRS的RE开销的多个对应关系中的哪个对应来确定DMRS的RE开销。
比如，“00”代表对应关系y1，“01”代表对应关系y2，“10”代表对应关系y3，“11”代表对应关系y4。
例如，针对DMRS的配置类型2与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系y1’：DMRS的配置类型2对应的DMRS的RE开销为4；
对应关系y2’：DMRS的配置类型2对应的DMRS的RE开销为8；
对应关系y3’：DMRS的配置类型2对应的DMRS的RE开销为12；
对应关系y4’：DMRS的配置类型2对应的DMRS的RE开销为16。
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型2与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系y1’，“01”代表对应关系y2’，“10”代表对应关系y3’，11代表对应关系y4’。
可选的，不同的UE之间的DMRS可以码分(即序列正交)，也可以时频分(即不同 UE的DMRS所占的RE的位置不同)。当不同的UE的DMRS进行时频分时，为了降低UE之间的DMRS的干扰，在所有UE的DMRS占用的RE上都不映射数据信号，即数据映射时需要绕开所有UE的DMRS占用的RE。此时，预定义的DMRS的RE开销应为所有UE的DMRS的RE开销的总和。
比如，基站110通过天线端口1000向UE1发送DMRS，通过天线端口1001向UE2发送DMRS，通过天线端口1002向UE3发送DMRS，通过天线端口1003向UE4发送DMRS，且UE1和UE2的DMRS是码分的，UE3和UE4的DMRS是码分的，而UE1与UE3的DMRS是时频分的，UE2与UE4的DMRS是时频分的，为了避免各UE之间的DMRS相互干扰，对UE的数据进行资源映射时需要绕开天线端口1000、1001、1002和1003上DMRS的总RE开销。
例如，可以预定义：UL-DMRS-config-type＝1或DL-DMRS-config-type＝1时，DMRS的RE开销为12(因为DMRS configuration type1下，一个天线端口可以对应6个RE)；UL-DMRS-config-type＝2或DL-DMRS-config-type＝2时，DMRS的RE开销为8(因为DMRS configuration type2下，一个天线端口可以对应4个RE)。
在一种可能的设计方式中，第一信息包括解调参考信号的配置类型和解调参考信号占用的符号长度。也就是说，可以根据解调参考信号的配置类型和解调参考信号占用的符号长度，获知与解调参考信号的配置类型和解调参考信号占用的符号长度对应的解调参考信号占用的资源单元的数量，解调参考信号的配置类型和解调参考信号占用的符号长度与解调参考信号占用的资源单元的数量具有对应关系。
可选的，解调参考信号占用的符号长度可以是DMRS占用的符号个数，或，DMRS所在资源的符号长度，或，DMRS所在资源的符号个数。比如，DMRS可以占1个符号，或占2个符号等等。
可选的，第一信息可以包括DMRS configuration type和DMRS占用的符号长度。比如，可以预定义参数DMRS-config-type和DMRS-max-len与DMRS的RE开销之间的对应关系。
其中，DL-DMRS-max-len或UL-DMRS-max-len可以是用于指示DMRS所占的OFDM符号的最大个数，比如1个或2个。可选的，可以是仅指示front load DMRS或基本的DMRS所占的符号的个数。
例如，可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝1时，DMRS的RE开销为Z1，Z1为整数。
例如，可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝2时，DMRS的RE开销为Z2，Z2为整数。
例如，可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝1时，DMRS的RE开销为Z3，Z3为整数。
例如，可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝2时，DMRS的RE开销为Z4，Z4为整数。
可选的，Z1、Z2、Z3和Z4的取值可以相同，也可以不同，具体不做限定。Z1，Z2，Z3和Z4中任意一个的取值可以为4，6，8，12，16，18或24等。
可选的，UL-DMRS-config-type，DL-DMRS-config-type，UL-DMRS-max-len和/或DL-DMRS-max-len可以是基站110通过高层信令通知UE 120的，也可以是UE 120上预先 配置好的，在此不做限定。
可选地，针对回退模式下，或，对于DCI format 0_0和/或format 1_0，上行DMRS和/或下行DMRS可以仅是通过单天线端口传输的。这种情况下，若DMRS configuration type1且DMRS占用的符号长度为1时，一个天线端口可以对应6个RE，则可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝1时，DMRS的RE开销为6。
若DMRS configuration type1且DMRS占用的符号长度为2时，一个天线端口可以对应12个RE，则可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝2时，DMRS的RE开销为12。
若DMRS configuration type2且DMRS占用的符号长度为1时，一个天线端口可以对应4个RE，则可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝1时，DMRS的RE开销为4。
若DMRS configuration type2且DMRS占用的符号长度为2时，一个天线端口可以对应8个RE，则可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝2时，DMRS的RE开销为8。
可选的，不同的UE的DMRS之间可以码分(即序列正交)，也可以时频分(即不同UE的DMRS所占的RE的位置不同。当不同UE的DMRS之间进行时频分时，为了降低UE之间的DMRS相互干扰，在所有UE的DMRS占用的RE上都不映射数据信号，即数据映射时需要绕开所有UE的DMRS占用的RE。此时，预定义的DMRS的RE开销应为所有UE的DMRS的RE开销的总和。
比如，基站通过天线端口1000向UE1发送DMRS，通过天线端口1001向UE2发送DMRS，通过天线端口1002向UE3发送DMRS，通过天线端口1003向UE4发送DMRS，UE1的DMRS和UE2的DMRS是码分的，UE3的DMRS和UE4的DMRS是码分的，而UE1的DMRS与UE3的DMRS是时频分的，UE2的DMRS与UE4的DMRS是时频分的，为了避免各UE之间DMRS的相互干扰，对UE的数据进行资源映射时需要绕开天线端口1000、1001、1002和1003上DMRS占用的所有RE。
例如，若DMRS configuration type1且DMRS占用的符号长度为1时，一个port可以对应6个RE，则可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝1时，DMRS的RE开销为12。
例如，若DMRS configuration type1且DMRS占用的符号长度为2时，一个port可以对应12个RE，则可以预定义：UL-DMRS-config-type＝1且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝1且DL-DMRS-max-len＝2时，DMRS的RE开销为24。
例如，若DMRS configuration type2且DMRS占用的符号长度为1时，一个port可以对应4个RE，则可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝1，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝1时，DMRS的RE开销为8。
例如，DMRS configuration type2且DMRS占用的符号长度为2时，一个port可以对应8个RE，则可以预定义：UL-DMRS-config-type＝2且UL-DMRS-max-len＝2，或DL-DMRS-config-type＝2且DL-DMRS-max-len＝2时，DMRS的RE开销16。
可选的，Z1、Z2、Z3和Z4中至少一个可以有多个取值。当Z1、Z2、Z3和Z4中的某 个有多个取值时，基站110可以通过信令告知UE 120 DMRS具体的RE开销。
例如，Z1和/或Z2可以从6、12、18、24中取值时，基站110可以通过信令告知UE 120 DMRS的RE开销具体为6、12、18和24中的哪一个。
例如，Z3和/或Z4可以从4、8、12、16、20和24中取值时，基站110可以通过信令告知UE 120 DMRS的RE开销具体为4、8、12、16、20和24中的哪一个。
可选的，可以预定义一个解调参考信号的配置类型和解调参考信号占用的符号长度与DMRS的RE开销的多个对应关系，基站可以通过信令告知UE计算TBS应使用哪个对应关系。
例如，针对解调参考信号的配置类型1和解调参考信号占用的符号长度1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系z1：DMRS的配置类型1和DMRS的符号长度1对应的DMRS的RE开销为6；
对应关系z2：DMRS的配置类型1和DMRS的符号长度1对应的DMRS的RE开销为12；
对应关系z3：DMRS的配置类型1和DMRS的符号长度1对应的DMRS的RE开销为18；
对应关系z4：DMRS的配置类型1和DMRS的符号长度1对应的DMRS的RE开销为24；
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型1和DMRS的符号长度1与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的数量。
比如，“00”代表对应关系z1，“01”代表对应关系z2，“10”代表对应关系z3，“11”代表对应关系z4。
例如，针对解调参考信号的配置类型1和解调参考信号占用的符号长度2与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系z1’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为12；
对应关系z2’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为18；
对应关系z3’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为24；
对应关系z4’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为36；
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型1和DMRS的符号长度2与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE数量。
比如，“00”代表对应关系z1’，“01”代表对应关系z2’，“10”代表对应关系z3’，“11”代表对应关系z4’。
例如，针对解调参考信号的配置类型2和解调参考信号占用的符号长度1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种，比如：
对应关系z1”：DMRS的配置类型2和DMRS的符号长度1对应的DMRS的RE开销为4；
对应关系z2”：DMRS的配置类型2和DMRS的符号长度1对应的DMRS的RE开销为8；
对应关系z3”：DMRS的配置类型2和DMRS的符号长度1对应的DMRS的RE开销为 12；
对应关系z4”：DMRS的配置类型2和DMRS的符号长度1对应的DMRS的RE开销为16；
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型2和DMRS的符号长度1与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系z1”，“01”代表对应关系z2”，“10”代表对应关系z3”，“11”代表对应关系z4”。
例如，针对解调参考信号的配置类型2和解调参考信号占用的符号长度2与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系z1”’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为8；
对应关系z2”’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为16；
对应关系z3”’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为24；
对应关系z4”’：DMRS的配置类型1和DMRS的符号长度2对应的DMRS的RE开销为32；
基站可以通过高层信令和/或物理层信息告知UE，可以使用DMRS的配置类型2和DMRS的符号长度2与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系z1”’，“01”代表对应关系z2”’，“10”代表对应关系z3”’，“11”代表对应关系z4”’。
在一种可能的设计方式中，第一信息可以包括波形。也就是说，可以根据波形获知与波形对应的解调参考信号占用的资源单元的数量，波形与解调参考信号占用的资源单元的数量具有对应关系。
可选的，可以预定义波形与DMRS的RE开销之间的对应关系。
可选的，波形可以是信道的波形，也可以是信号的波形。比如物理上行数据信道的波形，物理上行控制信道的波形，物理下行数据信道的波形，物理下行控制信道的波形等。比如可以是参考信号的波形，比如解调参考信号的波形等。
可选的，波形可以分为单载波波形，多载波波形。可选的，波形可以是是否使能预编码变换(transform precoding)等。
例如，可以预定义：波形是单载波，即使能预编码变换(transform precoding is enabled)时，DMRS的RE开销为W1，W1为整数。
例如，可以预定义：波形是单载波，且单载波下仅支持configuration type1的DMRS时，DMRS的RE开销为6。
例如，可以预定义：波形是多载波，即不使能预编码变换(transform precoding is not enabled)时，DMRS的RE开销为W2，W2为整数。
例如，可以预定义：波形是多载波，且多载波下可以支持configuration type2的DMRS时，DMRS的RE开销为4。
例如，可以预定义：波形是多载波，且多载波下可以支持configuration type1的 DMRS时，DMRS的RE开销6。
可选的，W1和/或W2的取值可以是4、6、8、12、16和24等中任意一个。
可选地，W1和/或W2可以有多个取值。当W1和/或W2有多个取值时，基站110可以通过信令告知UE 120 DMRS的RE开销为这多个取值中的哪一个。
例如，预定义了W1可以为6，12，18，24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为6、12、18、24中的哪一个。
例如，预定义了W2可以为4，8，12，16，20或24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为4、8、12、16、20或24中的哪一个。
可选的，可以预定义一个波形与DMRS的RE开销的多个对应关系，基站可以通过信令告知UE计算TBS应使用哪个对应关系。
例如，针对波形与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系w1：不使能预编码变换时对应的DMRS的RE开销为4；
对应关系w2：不使能预编码变换时对应的DMRS的RE开销为8；
对应关系w3：使能预编码变换时对应的DMRS的RE开销为6；
对应关系w4：使能预编码变换时对应的DMRS的RE开销为12。
基站可以通过高层信令和/或物理层信息告知UE，可以使用波形与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系w1，“01”代表对应关系w2，“10”代表对应关系w3，“11”代表对应关系w4。
在一种可能的实现方式中，第一信息可以包括解调参考信号占用的符号长度和波形。也就是说，可以根据解调参考信号占用的符号长度和波形，获知与解调参考信号占用的符号长度和波形对应的解调参考信号占用的资源单元的数量，解调参考信号占用的符号长度和波形与解调参考信号占用的资源单元的数量具有对应关系。
可选的，可以预定义DMRS占用的符号长度和波形与DMRS的RE开销之间的对应关系。
例如，可以预定义：波形是单载波，且上行DMRS占用的符号长度(UL-DMRS-max-len)＝1时，DMRS的RE开销为W3，W3为整数。
例如，可以预定义：波形是单载波，且UL-DMRS-max-len＝1时，DMRS的RE开销为6。
例如，可以预定义：波形是单载波，且UL-DMRS-max-len＝2时，DMRS的RE开销为W4，W4为整数。
例如，可以预定义：波形是单载波，且UL-DMRS-max-len＝2时，DMRS的RE开销为12。
例如，可以预定义：波形是多载波且下行DMRS占用的符号长度(DL-DMRS-max-len)＝1，或波形是多载波且UL-DMRS-max-len＝1时，DMRS的RE开销为W5，W5为整数。
例如，可以预定义：波形是多载波且DL-DMRS-max-len＝1，或波形是多载波且UL-DMRS-max-len＝1时，DMRS的RE开销为4。
例如，可以预定义：波形是多载波且DL-DMRS-max-len＝2，或波形是多载波或UL-DMRS-max-len＝2时，DMRS的RE开销为W6，W6为整数。
例如，可以预定义：波形是多载波且DL-DMRS-max-len＝2，或波形是多载波或UL-DMRS-max-len＝2时，DMRS的RE开销为8。
可选的，W3和/或W4的取值可以是4、6、8、12、16和24等中任意一个。
可选地，W3和/或W4可以有多个取值。当W3和/或W4有多个取值时，基站110可以通过信令告知UE 120 DMRS的RE开销为这多个取值中的哪一个。
例如，预定义了W3可以为6，12，18，24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为6、12、18、24中的哪一个。
例如，预定义了W4可以为4，8，12，16，20或24等中的至少一个，则基站110可以通过信令告知UE 120 DMRS的RE开销具体为4、8、12、16、20或24中的哪一个。
可选的，可以预定义一个波形和DMRS的符号长度与DMRS的RE开销的多个对应关系，基站可以通过信令告知UE计算TBS应使用哪个对应关系。
例如，针对不使能预编码变换的波形和DMRS的符号长度1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系w1’：不使能预编码变换，且符号长度为1时对应的DMRS的RE开销为4；
对应关系w2’：不使能预编码变换，且符号长度为1时对应的DMRS的RE开销为8；
对应关系w3’：不使能预编码变换，且符号长度为1时对应的DMRS的RE开销为12；
对应关系w4’：不使能预编码变换，且符号长度为1时对应的DMRS的RE开销为16。
基站可以通过高层信令和/或物理层信息告知UE，可以使用波形与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系w1’，“01”代表对应关系w2’，“10”代表对应关系w3’，11代表对应关系w4’。
例如，针对不使能预编码变换的波形和DMRS的符号长度1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系w1”：不使能预编码变换，且符号长度为2时对应的DMRS的RE开销为8；
对应关系w2”：不使能预编码变换，且符号长度为2时对应的DMRS的RE开销为16；
对应关系w3”：不使能预编码变换，且符号长度为2时对应的DMRS的RE开销为24；
对应关系w4”：不使能预编码变换，且符号长度为2时对应的DMRS的RE开销为36。
基站可以通过高层信令和/或物理层信息告知UE，可以使用波形与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系w1”，“01”代表对应关系w2”，“10”代表对应关系w3”，“11”代表对应关系w4”。
例如，针对使能预编码变换的波形和DMRS的符号长度1与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系w1”’：使能预编码变换，且符号长度为1时对应的DMRS的RE开销为6；
对应关系w2”’：使能预编码变换，且符号长度为1时对应的DMRS的RE开销为12；
对应关系w3”’：使能预编码变换，且符号长度为1时对应的DMRS的RE开销为18；
对应关系w4”’：使能预编码变换，且符号长度为1时对应的DMRS的RE开销为 24。
基站可以通过高层信令和/或物理层信息告知UE，可以使用波形与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系w1”’，“01”代表对应关系w2”’，“10”代表对应关系w3”’，“11”代表对应关系w4”’。
例如，针对使能预编码变换的波形和DMRS的符号长度2与DMRS的RE开销的对应关系可以包括如下对应关系中的至少一种：
对应关系w1””：使能预编码变换，且符号长度为2时对应的DMRS的RE开销为12；
对应关系w2””：使能预编码变换，且符号长度为2时对应的DMRS的RE开销为24；
对应关系w3””：使能预编码变换，且符号长度为2时对应的DMRS的RE开销为36；
对应关系w4””：使能预编码变换，且符号长度为2时对应的DMRS的RE开销为48。
基站可以通过高层信令和/或物理层信息告知UE，可以使用波形与DMRS的RE开销的多个对应关系中的哪个对应关系来确定DMRS的RE开销。
比如，“00”代表对应关系w1””，“01”代表对应关系w2””，“10”代表对应关系w3””，“11”代表对应关系w4””。
在一种可能的设计方式中，第一信息可以包括波形、解调参考信号的配置类型和解调参考信号占用的符号长度。也就是说，可以根据波形、解调参考信号的配置类型和解调参考信号占用的符号长度，获知解调参考信号的RE开销，波形、解调参考信号的配置类型和解调参考信号占用的符号长度与解调参考信号的RE开销之间具有对应关系。
可选的，第一信息可以包括波形、DMRS的配置类型和DMRS占用的符号长度，可以预定义波形、DMRS的配置类型和DMRS占用的符号长度与DMRS的RE开销之间的对应关系。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝1，或波形是多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝1时，DMRS的RE开销为W7，W7为整数。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝1，或波形是多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝1时，DMRS的RE开销为6。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝2，或波形是多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝2时，DMRS的RE开销为W8，W8为整数。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝2，或波形是多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝2时，DMRS的RE开销为12。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝2且DL-DMRS-max-len＝1，或波形是多载波且UL-DMRS-config-type＝2且UL-DMRS-max-len＝1时，DMRS的RE开销为 W9，W9为整数。该情况下，W9一种示例为4。
例如，可以预定义：波形是多载波且DL-DMRS-config-type＝2且DL-DMRS-max-len＝2，或波形是多载波且UL-DMRS-config-type＝2且UL-DMRS-max-len＝2时，DMRS的RE开销为W10，W10为整数。W10的一种示例为8。
可选的，W1至W10中的任意一个的取值可以为4，6，8，12，16，18，24，36或48等。W1～W10中的任意两个取值可以取值相同，也可以取值不同，对此不做限定。
可选的，不同的UE的DMRS之间可以码分(即序列正交)，也可以时频分(即不同UE的DMRS所占的RE的位置不同。当不同UE的DMRS之间进行时频分时，为了降低UE之间的DMRS相互干扰，在所有UE的DMRS占用的RE上都不映射数据信号，即数据映射时需要绕开所有UE的DMRS占用的RE。此时，预定义的DMRS的RE开销应为所有UE的DMRS的RE开销的总和。
比如，基站通过天线端口1000向UE1发送DMRS，通过天线端口1001向UE2发送DMRS，通过天线端口1002向UE3发送DMRS，通过天线端口1003向UE4发送DMRS，UE1的DMRS和UE2的DMRS是码分的，UE3的DMRS和UE4的DMRS是码分的，而UE1的DMRS与UE3的DMRS是时频分的，UE2的DMRS与UE4的DMRS是时频分的，为了避免各UE之间DMRS的相互干扰，对UE的数据进行资源映射时需要绕开天线端口1000、1001、1002和1003上DMRS占用的所有RE。
例如，若DMRS configuration type1下，一个port可以对应6个RE，则可以预定义：波形为多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝1，或波形为多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝1时，DMRS的RE开销为12。
例如，若DMRS configuration type1下，一个port可以对应12个RE，则可以预定义：波形为多载波且UL-DMRS-config-type＝1且UL-DMRS-max-len＝2，或波形为多载波且DL-DMRS-config-type＝1且DL-DMRS-max-len＝2时，DMRS的RE开销为24。
例如，若DMRS configuration type2下，一个port可以对应4个RE，则可以预定义：波形为多载波且UL-DMRS-config-type＝2且UL-DMRS-max-len＝1，或波形为多载波且DL-DMRS-config-type＝2且DL-DMRS-max-len＝1时，DMRS的RE开销为8，
例如，若DMRS configuration type2下，一个port可以对应8个RE，则可以预定义：波形多载波且UL-DMRS-config-type＝2且UL-DMRS-max-len＝2，或波形为多载波且DL-DMRS-config-type＝2且DL-DMRS-max-len＝2时，DMRS的RE开销为16。
可选的，可以预定义W1～W10中的任意一个有多个取值。当预定义W1～W10中的任意一个有多个取值时，基站可以通过信令告知UE DMRS具体的RE开销。
例如，若预定义了W1至W8中至少一个可以为6，12，18或24等，则基站可以通过信令告知UE DMRS的RE开销具体为6，12，18或24中哪一个。
例如，若预定义了W2，W4，W5，或W9和W10中任意一个可以为4，8，12，16，20，24等，则基站可以通过信令告知UE DMRS的RE开销具体为4，8，12，16，20和24中的哪一个。
在一种可能的设计方式中，第一信息可以包括根据数据信道的类型和/或下行控制信息的无线网络临时标识(radio network temporary identifier,RNTI)加扰方式。也就是说，可以根据数据信道的类型和/或下行控制信息的RNTI加扰方式，获知解调参考信号的 RE开销，数据信道的类型和/或下行控制信息的RNTI加扰方式与解调参考信号的RE开销之间具有对应关系。
可选的，可以预定义数据信道的类型和/或DCI的RNTI加扰方式与DMRS的RE开销之间的对应关系。
基站与UE之间可以包括多种类型的数据信道。
可选的，数据信道的类型可以包括上行数据传输，下行数据传输中的至少一种。
可选的，数据信道的类型包括系统信息，广播信息，单播信息，多播信息中的至少一种。
例如，有的物理数据共享信道(physical downlink sharing channel，PDSCH)是进行UE单播数据传输的，有的PDSCH是用于传输系统信息或广播信息或多播信息，有的PDSCH是进行寻呼信息(paging，P)的传输的，有的PDSCH可以是传输随机接入响应的(random access response,RAR)等等。单播数据是指UE专用(specific)的数据，多播信息或广播信息是指是多个UE可以同时接收的数据。
例如，有的上行数据共享信道(physical uplink sharing channel，PUSCH)是进行UE单播数据传输的，有的PUSCH是用于传输随机接入消息3。
例如，通信流程为用户先进行下行同步，接收下行同步信号，进入RRC链接态之后接收RRC信令，物理层信令，进行下行数据传输。同时进入RRC链接态之后，可以进行上行随机接入，基站发送随机接入响应，完成上行同步，进行上行数据传输。
例如，UE在接收PDSCH之前需要接收DCI。DCI的信息比特中包括冗余校验码(cyclic redundancy check，CRC)。
可选的，CRC可以与RNTI相关。例如，针对剩余最小系统信息(remaining minimum system information，RMSI)的DCI可以是通过根据RMSI-RNTI生成的CRC进行加扰的。针对paging的DCI可以是通过根据P-RNTI生成的CRC进行加扰的。针对RAR的DCI可以是通过根据RA-RNTI生成的CRC进行加扰的。而针对用户级的数据信道的DCI，可以是用小区(cell，C)-RNTI生成的CRC进行加扰的。
比如，针对用于传输RMSI，paging，消息3和/或RAR等的数据信道或者在无线资源控制(radio reference control，RRC)链接态之前DCI调度的数据信道或针对RMSI-RNTI、SI-RNRI、P-RNTI或RA-RNTI加扰的DCI调度的数据信道，可以是预定义DMRS的RE开销为4个RE或6个RE等。
可选，针对用于传输RMSI，paging，消息3和/或RAR等的数据信道或者在无线资源控制(radio reference control，RRC)链接态之前DCI调度的数据信道或针对RMSI-RNTI、SI-RNRI、P-RNTI或RA-RNTI加扰的DCI调度的数据信道的DMRS的RE开销，可以是UE上预定义的，也可以是基站通知的。
可选的，可以为不同的数据信道预定义相同的DMRS的RE开销，也可以预定义不同的DMRS的RE开销。
比如，针对上行数据调度可以预定义DMRS的RE开销为6；针对下行数据调度可以预定义DMRS的RE开销为4。
可选，UE上为RRC链接态之后的数据信道，和/或，为C-RNTI加扰的DCI调度的数据信道配置的DMRS的RE开销，可以是UE上预定义的，也可以是基站通知的。
可选的，可以为同一个数据信道预定义多个DMRS的RE开销，然后基站再通过信令通知UE DMRS的RE开销。
在一种可能的设计方式中，第一信息包括数据块占用的符号长度。也就是说，可以根据数据块占用的符号长度，获知与数据块占用的符号长度对应的解调参考信号占用的资源单元的数量，数据块占用的符号长度与解调参考信号专用的资源单元的数量具有对应关系。
可选的，可以预定义数据块占用的符号长度与DMRS的RE开销之间的对应关系。
例如，可以预定义：数据块占用的符号长度小于7时，DMRS的RE开销为4或6。这是因为数据块占用的符号长度小于7时，传输数据块的时间单元(例如14个符号)中可能仅传输了front load DMRS，而没有传输additional DMRS。
例如，可以预定义：数据块占用的符号长度大于或等于7时，DMRS的RE开销为8或12。这是因为，数据块占用的符号长度大于或等于7时，传输数据块的时间单元(例如14个符号)中可能不仅传输了front load DMRS，还传输了additional DMRS。
front load DMRS是指在一个时间单元传输的DMRS中，占用的符号靠前的DMRS；additional DMRS是指在一个时间单元传输的DMRS中，占用的符号靠后的DMRS。
其中，front loaded DMRS也可称为基本的DMRS，可以放在数据的开始或者相对靠前的位置。additional DMRS也可称为附加的DMRS。其中，基本的DMRS与附加的DMRS可以承载在同一调度单元的不同符号位置上，该同一调度单元至少包括子帧、时隙、或者微时隙中的任意一种，本申请实施例对此不作特别限定。
可选的，规定additional DMRS可以是为了提高信道估计的准确性，可以适用于高速移动的场景，不同符号上信道发生变化，为了提高信道估计的准确性，引入了additional DMRS。
front loaded DMRS与additonal DMRS的示意图如图4和图5所示。图4和图5中，填充了横线的符号为基本DMRS占用的符号，即front-loaded DMRS占用的符号，而第填充了点的符号为additional DMRS占用的符号。
图4中的font loaded DMRS在符号3(即第4个符号)上，additonal DMRS在符号7(即第8个符号)上。图5中的font loaded DMRS在符号2(即第3个符号)上，additional DMRS在符号7(即第8个符号)上。
因为在计算TBS时为了得到更准确的TBS，需要在考虑DMRS的开销时是真实实际基站传输的DMRS的RE数，即既要考虑front-loaded DMRS，又要考虑additional DMRS。因为数据在所述DMRS的RE上都不映射。
在一种可能的设计方式中，第一信息包括数据块占用的符号的位置。也就是说，可以根据数据块占用的符号的位置，获知与数据块占用的符号的位置对应的解调参考信号占用的资源单元的数量，数据块占用的符号的位置与解调参考信号专用的资源单元的数量具有对应关系。
可选的，可以预定义数据块占用的符号的位置与DMRS的RE开销之间的对应关系。
例如，可以预定义：数据块占用的最后一个符号位于传输该数据块的时间单元(例如14个符号)中第9个符号之前时，DMRS的RE开销为4或6。这是因为这种情况下，数据块占用的符号长度可能是小于7的，即传输数据块的时间单元中可能仅传输了front load  DMRS，而没有传输additional DMRS。
数据块占用的最后一个符号位于传输该数据块的时间单元中第9个符号之前，可以理解为，数据块占用的最后一个符号的索引(index)小于8。
例如，可以预定义：数据块占用的最后一个符号位于传输该数据块的时间单元(例如14个符号)中第9个符号或之后时，DMRS的RE开销为8或12。这是因为这种情况下，数据块占用的符号长度可能是大于或等于7的，即传输数据块的时间单元中可能不仅传输了front load DMRS，还传输了additional DMRS。
数据块占用的最后一个符号位于传输该数据块的时间单元中第9个符号或之后，可以理解为，数据块占用的最后一个符号的索引(index)大于或等于8。
在一种可能的设计方式中，第一信息可以包括additional DMRS占用的符号的位置和/或additional DMRS的数目(或个数)。也就是说，可以根据additional DMRS占用的符号的位置和/或additional DMRS的数目(或个数)，获知与additional DMRS占用的符号的位置和/或additional DMRS的数目(或个数)对应的解调参考信号占用的资源单元的数量，additiaonal DMRS占用的符号的位置和/或additional DMRS的数目(或个数)与解调参考信号占用的资源单元的数量具有对应关系。
可选的，可以预定义additional DMRS占用的符号的位置和/或additional DMRS的数目(或个数)与DMRS的RE开销之间的对应关系。
其中，DL-DMRS-add-pos或UL-DMRS-add-pos可以是用于指示additional DMRS的数目，或，也可以用于指示additional DMRS的个数，比如可以是0,1,2,3中的至少一个。
可选的，当front load DMRS占用的符号长度为1时，如果additional DMRS的数目为0，则表明additional DMRS占用0个符号；如果additional DMRS的数目为1，则表明additional DMRS占用1个符号；如果additional DMRS的数目为2，则表明additional DMRS占用2个符号；如果additional DMRS的数目为3，则表明additional DMRS占用3个符号。
可选的，当front load DMRS占用的符号长度为2时，如果additional DMRS的数目为0，则表明additional DMRS占用0个符号；如果additional DMRS的数目为1，则表明additional DMRS占用2个符号；如果additional DMRS的数目为2，则表明additional DMRS占用4个符号；如果additional DMRS的数目为3，则表明additional DMRS占用6个符号。
其中，DL-DMRS-add-pos或UL-DMRS-add-pos也可以是用于指示additional DMRS占用的符号的位置，比如可以是0,1,2,3中的至少一个。
可选的，additional DMRS占用的符号的位置也可以称为additional DMRS占用的符号的位置为多少个front load DMRS的位置。比如可以是0,1,2,3中的至少一个。
可选的，当front load DMRS占用的符号长度为1时，如果additional DMRS占用的符号的位置为0，则表明additional DMRS占用0个front load DMRS的位置，即additional DMRS占用0个符号；如果additional占用的符号的位置为1，则表明additional DMRS占用1个front load DMRS的位置，即additional DMRS占用1个符号；如果additional DMRS占用的符号的位置为2，则表明additional DMRS占用2个front load DMRS的位置，即additional DMRS占用2个符号；如果additional DMRS占用的符号的位置为3，则表 明additional DMRS占用3个front load DMRS的位置，即additional DMRS占用3个符号。
可选的，当front load DMRS占用的符号长度为2时，如果additional DMRS占用的符号的位置为0，则表明additional DMRS占用0个front load DMRS的位置，即additional DMRS占用0个符号；如果additional DMRS占用的符号的位置为1，则表明additional DMRS占用1个front load DMRS的位置，即additional DMRS占用2个符号；如果additional DMRS占用的符号的位置为2，则表明additional DMRS占用2个front load DMRS的位置，即additional DMRS占用4个符号；如果如果additional DMRS占用的符号的位置为3，则表明additional DMRS占用3个front load DMRS的位置，即additional DMRS占用6个符号。
可选的，additional DMRS可以分为上行additional DMRS和下行additional DMRS。上行additional DMRS占用的符号的位置和下行additional DMRS占用的符号的位置分别可以用参数“DL-DMRS-add-pos”和参数“UL-DMRS-add-pos”来表示。
可选的，上行additional DMRS占用的符号的位置和下行additional DMRS占用的符号的位置可以是通过同一个参数指示，具体的，本申请对此不做限定。
可选的，可以预定义：DL-DMRS-add-pos＝0或UL-DMRS-add-pos＝0时，DMRS的RE开销为Q1。其中，Q1为整数。
例如，可以预定义：DL-DMRS-add-pos＝1或UL-DMRS-add-pos＝1时，DMRS的RE开销为Q2。其中，Q2为整数。
例如，可以预定义：DL-DMRS-add-pos＝2或UL-DMRS-add-pos＝2时，DMRS的RE开销为Q3。其中，Q3为整数。
例如，可以预定义：DL-DMRS-add-pos＝3或UL-DMRS-add-pos＝3时，DMRS的RE开销为Q4。其中，Q4为整数。
例如，可以预定义：DL-DMRS-add-pos＝0或UL-DMRS-add-pos＝0时，DMRS的RE开销为4或6。
例如，可以预定义：DL-DMRS-add-pos＝1或UL-DMRS-add-pos＝1时，DMRS的RE开销为8或12。
例如，可以预定义：DL-DMRS-add-pos＝2或UL-DMRS-add-pos＝2时，DMRS的RE开销为12或18。
例如，可以预定义：DL-DMRS-add-pos＝3或UL-DMRS-add-pos＝3时，DMRS的RE开销为16或24。
可选的，Q1，Q2，Q3和Q4的取值可以相同，也可以不同，具体不做限定。Q1，Q2，Q3和Q4中任意一个的取值可以为4，6，8，12，16，18或24等。
可选的，Q1，Q2，Q3和Q4中至少一个可以有多个取值。当Q1，Q2，Q3和Q4中的某个有多个取值时，基站110可以通过信令告知UE 120 DMRS具体的RE开销。
在一种可能的设计方式中，第一信息可以包括DMRS的配置类型，DMRS占用的符号长度和数据块占用的符号长度。也就是说，可以根据DMRS的配置类型，DMRS占用的符号长度和数据块占用的符号长度，获知与DMRS的配置类型，DMRS占用的符号长度和数据块占用的符号长度对应的解调参考信号占用的资源单元的数量，所述DMRS的配置类型，DMRS 占用的符号长度和数据块占用的符号长度与所述解调参考信号占用的资源单元的数量具有对应关系。
可选的，可以预定义DMRS的配置类型，DMRS占用的符号长度和数据块占用的符号长度与DMRS的RE开销之间的对应关系。
可选的，例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝1且数据块占用的符号长度小于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝1且数据块的符号长度小于7时，DMRS的RE开销为P1。其中，P1为整数。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且数据块占用的符号长度小于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝2且数据块占用的符号长度小于7时，DMRS的RE开销为P2。其中，P2为整数。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且数据块占用的符号长度小于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且数据块占用的符号长度小于7时，DMRS的RE开销为P3。其中，P3为整数。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且数据块占用的符号长度小于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且数据块占用的符号长度小于7时，DMRS的RE开销为P4。其中，P4为整数。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7时，DMRS的RE开销为P5。其中，P5为整数。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1,且UL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为P6。其中，P6为整数。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且数据开占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7时，DMRS的RE开销为P7。其中，P7为整数。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为P8。其中，P8为整数。
可选的，P1～P8中的任意一个可以取值为4,6,8,12,16,18,20,24,28,32,36等。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝1且数据块占用的符号长度小于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝1且数据块的符号长度小于7时，DMRS的RE开销为6。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且数据块占用的符号长度小于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝2且数据块占用的符号长度小于7时，DMRS的RE开销为12。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且数据块占用的符号长度小于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且数据块占用的符号长度小于7时，DMRS的RE开销为4。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且数据块占用的符号长度小于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且数据块占用的符号长度小于7时，DMRS的RE开销为8。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7时，DMRS的RE开销为12。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1,且UL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为24。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且数据开占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7时，DMRS的RE开销为8。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为16。
在一种可能的设计方式中，第一信息可以包括DMRS的配置类型、DMRS占用的符号长度、数据块占用的符号长度和额外DMRS占用的符号的位置。也就是说，可以预定义DMRS的配置类型、DMRS占用的符号长度、数据块占用的符号长度和额外DMRS占用的符号的位置与DMRS的RE开销之间的对应关系。其中，DMRS为接收该数据块时使用的DMRS。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝1且DL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1，且UL-DMRS-max-len＝1且UL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为18。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且DL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝2且UL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为36。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且DL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且UL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为12。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且DL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且UL-DMRS-add-pos＝2且数据块占用的符号长度大于或等于7时，DMRS的RE开销为24。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-add-pos＝3且DL-DMRS-max-len＝1且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝1且UL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7时，DMRS的RE开销为24。
例如，可以预定义：DL-DMRS-config-type＝1且DL-DMRS-max-len＝2且DL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝1且UL-DMRS-max-len＝2且UL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7时，DMRS的RE开销为48。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝1且DL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝1且UL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7时，DMRS的RE开销为16。
例如，可以预定义：DL-DMRS-config-type＝2且DL-DMRS-max-len＝2且DL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7，或UL-DMRS-config-type＝2且UL-DMRS-max-len＝2且UL-DMRS-add-pos＝3且数据块占用的符号长度大于或等于7时，DMRS的RE开销为32。
可选地，P1～P8中的至少一个可以有多个取值。当P1～P8中的至少一个有多个取值时，基站110可以通过信令告知UE 120 DMRS的RE开销为这多个取值中的哪一个。
可选地，第一信息还可以包括下行PDSCH映射类型A下DMRS的位置(DL-DMRS-typeA-pos)。DL-DMRS-typeA-pos＝2的时候，传输数据块的时间单元中可以有3个additional DMRS，因此预定义的DMRS的RE开销与DL-DMRS-typeA-pos不等于2时的DMRS的RE开销可以不同。
其中，DL-DMRS-typeA-pos可以是用于指示PDSCH mapping type A的情况下的DMRS的位置，可选的，DMRS的位置(DMRS的第一个符号位置)可以是第三个符号或第四个符号，比如index可以是2或3。
应理解，上述预定义的对应关系仅是示例。实际实现时，可以预定义DCI的格式，解调参考信号的配置类型，解调参考信号占用的符号长度，波形，解调参考信号的RNTI加扰方式，数据块占用的符号长度和数据块占用的符号的位置中至少一种信息与解调参考信号的RE开销之间的对应关系。具体的预定义方式可以参考上述各种方式，此处不再赘述。
按照上述任意一种方式为第一信息预定义解调参考信号的RE开销后，基站110和UE120上可以配置根据该方式预定义的第一信息与解调参考信号的RE开销之间的对应关系。其中，UE 120上配置的该对应关系可以是直接配置的，也可以是从基站110接收后配置的。
基站110和UE 120上配置根据上述任意一种方式预定义的第一信息与解调参考信号的RE开销之间的对应关系，以及获知第一信息后，可以根据第一信息与该对应关系获知解调参考信号的RE开销，从而根据该RE开销确定出TBS。
本申请一个实施例的确定解调参考信号的RE开销的方法的示意性流程图如图6所示。应理解，图6示出了该通信方法的步骤或操作，但这些步骤或操作仅是示例，本申请实施例还可以执行其他操作或者图6中的各个操作的变形。此外，图6中的各个步骤可以按照与图6呈现的不同的顺序来执行，并且有可能并非要执行图6中的全部操作。
图6所示的方法的执行主体为通信过程中的通信装置，例如，可以是基站110，也可以是UE 120。
S610，获知第一信息，第一信息包括以下至少一种信息：下行控制信息的格式，解调 参考信号的配置类型，解调参考信号占用的符号长度，波形，解调参考信号的RNTI加扰方式，数据信道的类型，数据块占用的符号长度和数据块占用的符号的位置。
可选地，下行控制信息的格式，解调参考信号的配置类型，解调参考信号占用的符号长度，波形，解调参考信号的RNTI加扰方式，数据信道的类型，数据块占用的符号长度和数据块占用的符号的位置中的至少一项可以是通信装置(例如基站和UE)根据通信需要获知的；和/或，可以是作为接收端的通信装置在作为发送端的通信装置的指示下获知的。
可选的，基站可以通过信令告知终端第一信息。终端根据基站的信令确定第一信息。所述信令可以是高层信令，也可以是物理层信令，具体的，本申请对此不做限定。
可选，终端或基站可以根据自身的需要或预存的信息获知第一信息，具体的，本申请对此不做限定。
可选的，本申请中的获知可以称为确定，得到，获得，或，确认，获取等。
例如，基站110可以通过高层信令通知UE 120解调参考信号的配置类型。
例如，UE 120可以使用各种RNTI去盲捡解调参考信号，解调成功时对应的RNTI加扰方式即为需要获知的RNTI加扰方式。
例如，基站和/或终端可以根据发送数据的数据信道的特征和/或接收数据的数据信道的特征获知第一信息。
S620，根据第一信息，获知与该第一信息对应的解调参考信号占用的RE的数量，该第一信息与解调参考信号占用的资源单元的数量具有对应关系。
可选的，第一信息与解调参考信号占用的资源单元的数量之间是一一对应的。
可选的，第一信息对应的解调参考信号占用的资源单元的数量可以包括接收或发送该第一信息对应的数据块时进行信道估计和/或解调的参考信号占用的资源单元的数量。
可选的，本申请中的获知可以称为确定，得到，获得，或，确认，获取等。
应理解，此处所述的解调参考信号占用的RE的数量可以指DCI调度的资源中可能的用于传输解调参考信号的RE的数量。也就是说，本申请实施例中所述的解调参考信号占用的RE的数量可以大于或等于DCI调度的资源中实际用于传输解调参考信号的RE的数量。
比如，若第一信息包括DCI的格式或DCI的RNTI加扰方式，则第一信息对应的解调参考信号占用的资源单元的数量可以包括接收该DCI调度的数据块时进行信道估计和/或解调的解调参考信号占用的资源单元的数量；若第一信息包括数据块占用的符号长度或数据块占用的符号的位置，则第一信息对应的解调参考信号占用的资源单元的数量可以包括接收该数据块时进行信道估计和/或解调的解调参考信号。
例如，第一信息包括下行控制信息的格式，且基站110或UE 120上按照前面所述的设计方式配置有下行控制信息的格式与DMRS的RE开销之间的对应关系时，基站110或UE 120根据第一信息，获知DMRS占用的RE的数量，可以包括：下行控制信息的格式为DMRS format 1_0时，获知DMRS占用的RE的数量为4，下行控制信息的格式为DMRS format0_0时，获知DMRS占用的RE的数量为6。
例如，第一信息包括DMRS configuration type，且基站110或UE 120上按照前面所述的设计方式配置有DMRS configuration type与DMRS的RE开销之间的对应关系时， 根据第一信息，获知DMRS占用的RE的数量，可以包括：DMRS configuration type为DMRS configuration type1时，获知DMRS占用的RE的数量为6；DMRS configuration type为DMRS configuration type2时，获知DMRS占用的RE的数量为4。
例如，第一信息包括DMRS configuration type和DMRS占用的符号长度，且基站110或UE 120上按照前面所述的设计方式配置有DMRS configuration type和DMRS占用的符号长度与DMRS的RE开销之间的对应关系时，根据第一信息，获知DMRS占用的RE的数量，包括：DMRS configuration type为DMRS configuration type1，且DMRS占用的符号长度为1时，获知DMRS占用的RE的数量为6；DMRS configuration type为DMRS configuration type1，且DMRS占用的符号长度为2时，获知DMRS占用的RE的数量为12；DMRS configuration type为DMRS configuration type2，且DMRS占用的符号长度为1时，获知DMRS占用的RE的数量为4；DMRS configuration type为DMRS configuration type2，且DMRS占用的符号长度为2时，获知DMRS占用的RE的数量为8。
应理解，基站110和UE 120按照前面所述任意一种方式配置第一信息和DMRS的RE开销之间的对应关系时，基站110和UE 120获知DMRS的RE开销的方法与上述例子类似，此处不再追溯。
本申请提出的方法，使得UE 120在没有收到基站110发送的指示CDM group的信息的情况下，也可以获知DMRS的RE开销，从而可以根据该RE开销确定出TBS。
例如，UE 120从基站110接收的是fallback DCI时，也可以获知DMRS的RE开销，以及确定TBS，从而可以提高传输性能。
本申请另一个实施例中，基站110可以通过信令向UE 120通知DMRS的RE开销。该信令可以是高层信令或物理层信令等。
例如，基站110向UE 120发送信令，该信令用于指示DMRS的RE开销为4，6，8，12，24等中的一个。
本申请另一个实施例中，基站110可以通过高层信令给UE 120配置DMRS的RE开销的多个取值，然后基站110再通过信令通知UE 120 DMRS的RE开销为这多个取值中的哪一个，以便于UE 120可以确定TBS。
图7是本申请一个实施例的通信装置的示意性结构图。应理解，图7示出的通信装置700仅是示例，本申请实施例的通信装置还可包括其他模块或单元，或者包括与图7中的各个模块的功能相似的模块，或者并非要包括图7中所有模块。
通信装置700可以包括第一处理模块710和第二处理模块720。通信装置700可以用于执行图6所示的方法。
例如，第一处理模块710，用于获知第一信息，所述第一信息包括以下至少一种信息：下行控制信息的格式，解调参考信号的配置类型，所述解调参考信号占用的符号长度，波形，所述下行控制信息的无线网络临时标识加扰方式，数据信道的类型，数据块占用的符号长度和所述数据块占用的符号的位置。
第二处理模块，用于根据所述第一信息，获知与所述第一信息对应的所述解调参考信号占用的资源单元的数量，所述第一信息与所述解调参考信号占用的资源单元的数量之间具有对应关系。
可选地，所述第一信息与所述解调参考信号占用的资源单元的数量之间是一一对应 的。
可选地，所述第一信息包括所述下行控制信息的格式时，第二处理模块720具体用于：
根据所述下行控制信息的格式为下行控制控制信息格式1_0，获知所述解调参考信号占用的资源单元的数量为4或6；和/或，
根据所述下行控制信息的格式为下行控制信息格式0_0，获知所述解调参考信号占用的资源单元的数量为6或4。
可选地，所述第一信息包括所述解调参考信号的配置类型时，第二处理模块720具体用于：
根据所述解调参考信号的配置类型为配置类型1，获知所述解调参考信号占用的资源单元的数量为6；和/或
根据所述解调参考信号的配置类型为配置类型2，获知所述解调参考信号占用的资源单元的数量为4。
可选地，所述第一信息包括所述解调参考信号的配置类型和所述解调参考信号占用的符号长度时，所述第二处理模块720具体用于：
根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量为6；和/或，
根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为12；和/或，
根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量为4；和/或，
根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为8。
可选地，所述第二处理模块720具体用于：根据所述第一信息和所述第一信息与所述解调参考信号占用的资源单元的数量之间的对应关系，获知所述解调参考信号占用的资源单元的数量。
图8是本申请一个实施例的通信设备的示意性结构图。应理解，图8示出的通信设备800仅是示例，本申请实施例的通信设备还可包括其他模块或单元，或者包括与图8中的各个模块的功能相似的模块，或者并非要包括图8中所有模块。
通信设备800包括至少一个处理器810和通信接口820。通信设备800可以用于执行图6所示的方法。
例如，通信接口用于与其他通信设备进行信息交互，至少一个处理器810执行程序指令，使得通信设备800实现图6中所示的方法。
可选地，通信设备800可以为接入网设备或终端设备。当通信设备800为终端设备时，所述对应关系可以是终端设备根据通信协议配置的，或可以是终端设备从接入网设备接收的。
图9是本申请一个实施例的系统芯片的示意性结构图。应理解，图9示出的系统芯片900仅是示例，本申请实施例的系统芯片还可包括其他模块或单元，或者包括与图9中的各个模块的功能相似的模块，或者并非要包括图9中所有模块。
系统芯片900包括至少一个处理器910和输入输出920。系统芯片900可以用于执行 图6所示的方法。
例如，输出输出接口用于与其他通信设备进行信息交互，至少一个处理器910执行程序指令，使得系统芯片900实现图6中所示的方法。
图10是本申请一个实施例的通信系统的示意性架构图。应理解，图10示出的通信系统1000仅是示例，本申请实施例的通信系统还可包括其他模块或单元，或者包括与图10中的各个模块的功能相似的模块，或者并非要包括图10中所有模块。
通信系统1000包括通信设备1010。通信设备1010可以是图8中所示的通信设备800。
本领域普通技术人员可以意识到，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，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，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申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本申请还提供了如下实施例，需要说明的是，如下实施例的编号方式同本申请中前述实施例编号方式并不一致。
实施例1、一种通信过程中获知资源单元数量的方法，所述方法包括：
获知第一信息，所述第一信息包括以下至少一种信息：下行控制信息的格式，解调参考信号的配置类型，所述解调参考信号占用的符号长度，波形，所述下行控制信息的无线网络临时标识加扰方式，数据信道的类型，数据块占用的符号长度和所述数据块占用的符号的位置；根据所述第一信息，获知与所述第一信息对应的所述解调参考信号占用的资源单元的数量，所述第一信息与所述解调参考信号占用的资源单元的数量之间具有对应关系。
实施例2、根据实施例1所述的方法，所述第一信息与所述解调参考信号占用的资源单元的数量之间是一一对应的。
实施例3、根据实施例1或2所述的方法，所述第一信息包括所述下行控制信息的格式时，所述根据所述第一信息，获知所述解调参考信号占用的资源单元的数量，包括：
根据所述下行控制信息的格式为下行控制控制信息格式1_0，获知所述解调参考信号占用的资源单元的数量为4或6；和/或，根据所述下行控制信息的格式为下行控制信息格式0_0，获知所述解调参考信号占用的资源单元的数量为6或4。
实施例4、根据实施例1或2所述的方法，所述第一信息包括所述解调参考信号的配置类型时，所述根据所述第一信息，获知所述解调参考信号占用的资源单元的数量，包括：
根据所述解调参考信号的配置类型为配置类型1，获知所述解调参考信号占用的资源单元的数量为6；和/或，根据所述解调参考信号的配置类型为配置类型2，获知所述解调参考信号占用的资源单元的数量为4。
实施例5、根据实施例1或2所述的方法，所述第一信息包括所述解调参考信号的配置类型和所述解调参考信号占用的符号长度时，所述根据所述第一信息，获知所述解调参考信号占用的资源单元的数量，包括：根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量 为6；和/或，根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为12；和/或，根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量为4；和/或，根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为8。
实施例6、根据实施例1至5中任一项所述的方法，所述根据所述第一信息，获知所述解调参考信号占用的资源单元的数量，包括：根据所述第一信息和所述第一信息与所述解调参考信号占用的资源单元的数量之间的对应关系，获知所述解调参考信号占用的资源单元的数量。
实施例7、根据实施例6所述的方法，所述方法由终端设备执行，所述对应关系是所述终端设备根据通信协议配置的或是从接入网设备接收的。
实施例8、一种通信装置，包括：第一处理模块，用于获知第一信息，所述第一信息包括以下至少一种信息：下行控制信息的格式，解调参考信号的配置类型，所述解调参考信号占用的符号长度，波形，所述下行控制信息的无线网络临时标识加扰方式，数据信道的类型，数据块占用的符号长度和所述数据块占用的符号的位置；第二处理模块，用于根据所述第一信息，获知与所述第一信息对应的所述解调参考信号占用的资源单元的数量，所述第一信息与所述解调参考信号占用的资源单元的数量之间具有对应关系。
实施例9、根据实施例8所述的通信装置，所述第一信息与所述解调参考信号占用的资源单元的数量之间是一一对应的。
实施例10、根据实施例8或9所述的通信装置，所述第一信息包括所述下行控制信息的格式时，所述第二处理模块具体用于：根据所述下行控制信息的格式为下行控制控制信息格式1_0，获知所述解调参考信号占用的资源单元的数量为4或6；和/或，根据所述下行控制信息的格式为下行控制信息格式0_0，获知所述解调参考信号占用的资源单元的数量为6或4。
实施例11、根据实施例8或9所述的通信装置，所述第一信息包括所述解调参考信号的配置类型时，所述第二处理模块具体用于：根据所述解调参考信号的配置类型为配置类型1，获知所述解调参考信号占用的资源单元的数量为6；和/或，根据所述解调参考信号的配置类型为配置类型2，获知所述解调参考信号占用的资源单元的数量为4。
实施例12、根据实施例8或9所述的通信装置，所述第一信息包括所述解调参考信号的配置类型和所述解调参考信号占用的符号长度时，所述第二处理模块具体用于：根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量为6；和/或，根据所述解调参考信号的配置类型为配置类型1，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为12；和/或，根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为1，获知所述解调参考信号占用的资源单元的数量为4；和/或，根据所述解调参考信号的配置类型为配置类型2，且所述解调参考信号占用的符号长度为2，获知所述解调参考信号占用的资源单元的数量为8。
实施例13、根据实施例8至12中任一项所述的通信装置，所述第二处理模块具体用 于：根据所述第一信息和所述第一信息与所述解调参考信号占用的资源单元的数量之间的对应关系，获知所述解调参考信号占用的资源单元的数量。
实施例14、根据实施例13所述的通信装置，所述通信装置为终端设备，所述对应关系是所述终端设备根据通信协议配置的或是从接入网设备接收的。
实施例15、一种通信设备，所述通信设备包括：至少一个处理器和通信接口，所述通信接口用于所述通信设备与其他通信设备进行信息交互，当程序指令在所述至少一个处理器中执行时，使得所述通信设备实现如实施例1至7中任一所述的方法。
实施例16、一种计算机程序存储介质，所述计算机程序存储介质具有程序指令，当所述程序指令被直接或者间接执行时，使得如实施例1至7中任一所述的方法中在如下任一设备上的功能得以实现：终端设备和接入网设备。
实施例17、一种芯片系统，所述芯片系统包括至少一个处理器，当程序指令在所述至少一个处理器中执行时，使得如实施例1至7中任一所述的方法中在如下任一设备上的功能得以实现：接入网设备和终端设备。
实施例18、一种通信系统，所述通信系统包括：如实施例15所述的通信设备。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，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，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (44)

  1. 一种通信方法，其特征在于，包括：
    确定下行控制信息的格式；
    根据所述下行控制信息的格式，获知解调参考信号占用的资源单元的数量；
    基于所述解调参考信号占用的资源单元的数量，确定传输块大小TBS。
  2. 根据权利要求1所述的方法，其特征在于，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号占用的资源单元的数量为6或12或24。
  3. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型以及所述解调参考信号占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述解调参考信号占用的资源单元的数量为6或12或24。
  4. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，以及所述数据块占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及所述数据块占用的符号的位置；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1；
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者，
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  6. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目；
    根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参 考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  7. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目；
    根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  8. 根据权利要求1所述的方法，其特征在于，所述下行控制信息的格式与所述解调参考信号占用的资源单元的数量具有对应关系。
  9. 根据权利要求1或8所述的方法，其特征在于，所述根据所述下行控制信息的格式，获知解调参考信号占用的资源单元的数量，包括：
    根据所述下行控制信息的格式和所述解调参考信号占用的资源单元的数量之间的对应关系，获知所述解调参考信号占用的资源单元的数量。
  10. 根据权利要求1-9中任一所述的方法，其特征在于，所述方法由无线移动通信系统中的终端设备执行，或由所述终端设备中的芯片执行。
  11. 一种通信方法，其特征在于，包括：
    获取下行控制信息的格式，所述下行控制信息的格式与解调参考信号占用的资源单元的数量具有对应关系；
    根据所述下行控制信息的格式，获知所述解调参考信号占用的资源单元的数量；
    基于所述解调参考信号占用的资源单元的数量，确定传输块大小TBS。
  12. 根据权利要求11所述的方法，其特征在于，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号占用的资源单元的数量为6或12或24。
  13. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型以及所述解调参考信号占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述解调参考信号占用的资源单元的数量为6或12或24。
  14. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，以及所述数据块占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数 量为6或12或24。
  15. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及所述数据块占用的符号的位置；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1；
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者，
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  16. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目；
    根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  17. 根据权利要求11所述的方法，其特征在于，所述方法还包括：
    获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目；
    根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  18. 根据权利要求11-17中任一所述的方法，其特征在于，所述根据所述下行控制信息的格式，获知所述解调参考信号占用的资源单元的数量，包括：
    根据所述下行控制信息的格式和所述解调参考信号占用的资源单元的数量之间的所述对应关系，获知所述解调参考信号占用的资源单元的数量。
  19. 根据权利要求11-18中任一所述的方法，其特征在于，所述方法由无线移动通信系统中的基站执行，或由所述基站中的芯片执行。
  20. 一种通信装置，其特征在于，包括：
    第一模块，用于确定下行控制信息的格式；
    第二模块，用于根据所述下行控制信息的格式，获知解调参考信号占用的资源单元的数量；
    第三模块，用于基于所述解调参考信号占用的资源单元的数量，确定传输块大小TBS。
  21. 根据权利要求20所述的通信装置，其特征在于，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号占用的资源单元的数量为6或12或24。
  22. 根据权利要求20所述的通信装置，其特征在于，还包括：
    第四模块，用于获取所述解调参考信号的配置类型以及所述解调参考信号占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述解调参考信号占用的资源单元的数量为6或12或24。
  23. 根据权利要求20所述的通信装置，其特征在于，还包括：
    第五模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，以及所述数据块占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者，
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  24. 根据权利要求20所述的通信装置，其特征在于，还包括：
    第六模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及所述数据块占用的符号的位置；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1；
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者，
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  25. 根据权利要求20所述的通信装置，其特征在于，还包括：
    第七模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目；
    第八模块，用于根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  26. 根据权利要求1所述的通信装置，其特征在于，还包括：
    第九模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号 的数目；
    第十模块，用于根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  27. 根据权利要求20所述的通信装置，其特征在于，所述下行控制信息的格式与所述解调参考信号占用的资源单元的数量具有对应关系。
  28. 根据权利要求20或27所述的通信装置，其特征在于，还包括：
    第十一模块，用于根据所述下行控制信息的格式和所述解调参考信号占用的资源单元的数量之间的对应关系，获知所述解调参考信号占用的资源单元的数量。
  29. 根据权利要求20-28中任一所述的通信装置，其特征在于，所述通信装置是无线移动通信系统中的终端设备，或者是所述终端设备中的芯片。
  30. 一种通信装置，其特征在于，包括：
    第一模块，用于获取下行控制信息的格式，所述下行控制信息的格式与解调参考信号占用的资源单元的数量具有对应关系；
    第二模块，用于根据所述下行控制信息的格式，获知所述解调参考信号占用的资源单元的数量；
    第三模块，用于基于所述解调参考信号占用的资源单元的数量，确定传输块大小TBS。
  31. 根据权利要求30所述的通信装置，其特征在于，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号占用的资源单元的数量为6或12或24。
  32. 根据权利要求30所述的通信装置，其特征在于，还包括：
    第四模块，用于获取所述解调参考信号的配置类型以及所述解调参考信号占用的符号长度；其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述解调参考信号占用的资源单元的数量为6或12或24。
  33. 根据权利要求30所述的通信装置，其特征在于，还包括：
    第五模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，以及所述数据块占用的符号长度；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  34. 根据权利要求30所述的通信装置，其特征在于，还包括：
    第六模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长 度，所述数据块占用的符号长度，以及所述数据块占用的符号的位置；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1；
    所述数据块占用的符号长度大于或等于7的情况下，所述解调参考信号占用的资源单元的数量为12或24或36；或者，
    所述数据块占用的符号长度小于7的情况下，所述解调参考信号占用的资源单元的数量为6或12或24。
  35. 根据权利要求30所述的通信装置，其特征在于，还包括：
    第七模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目；
    第八模块，用于根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  36. 根据权利要求30所述的通信装置，其特征在于，还包括：
    第九模块，用于获取所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目；
    第十模块，用于根据所述下行控制信息的格式，所述解调参考信号的配置类型，所述解调参考信号占用的符号长度，所述数据块占用的符号长度，所述数据块占用的符号的位置，以及额外解调参考信号的数目，获知所述解调参考信号占用的资源单元的数量；
    其中，所述下行控制信息的格式为DCI format 0_0或DCI format 1_0，所述解调参考信号的配置类型为DMRS configuration type1，所述解调参考信号占用的符号长度为1，所述额外解调参考信号的数目为0或1或2。
  37. 根据权利要求30-36中任一所述的通信装置，其特征在于，还包括：
    第十一模块，用于根据所述下行控制信息的格式和所述解调参考信号占用的资源单元的数量之间的所述对应关系，获知所述解调参考信号占用的资源单元的数量。
  38. 根据权利要求30-37中任一所述的通信装置，其特征在于，所述通信装置是无线移动通信系统中的基站，或者是所述基站中的芯片。
  39. 一种通信装置，其特征在于，用于执行如权利要求1-19中任一所述的方法。
  40. 一种通信装置，其特征在于，包括至少一个处理器和通信接口，所述通信接口用于所述通信装置与其他通信设备进行信息交互，当程序指令在所述至少一个处理器中执行时，执行如权利要求1-19中任一所述的方法。
  41. 一种计算机程序存储介质，其特征在于，所述计算机程序存储介质具有程序指令，当所述程序指令被直接或者间接执行时，进行如权利要求1-19中任一所述的方法的操作。
  42. 一种计算机程序，其特征在于，所述计算机程序具有程序指令，当所述程序指令被直接或者间接执行时，进行如权利要求1-19中任一所述的方法的操作。
  43. 一种芯片系统，其特征在于，所述芯片系统包括至少一个处理器，当程序指令在所述至少一个处理器中执行时，进行如权利要求1-19中任一所述的方法的操作。
  44. 一种无线移动通信系统，其特征在于，所述无线移动通信系统包括如下中一个或多个：
    如权利要求20-40中任一所述的通信装置；
    如权利要求41所述的计算机程序存储介质；
    如权利要求42所述的计算机程序；或者，
    如权利要求43所述的芯片系统。
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