WO2020143805A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2020143805A1
WO2020143805A1 PCT/CN2020/071531 CN2020071531W WO2020143805A1 WO 2020143805 A1 WO2020143805 A1 WO 2020143805A1 CN 2020071531 W CN2020071531 W CN 2020071531W WO 2020143805 A1 WO2020143805 A1 WO 2020143805A1
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WIPO (PCT)
Prior art keywords
indication information
codewords
capability indication
codeword
value
Prior art date
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PCT/CN2020/071531
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English (en)
French (fr)
Inventor
刘显达
刘鹍鹏
张雷鸣
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN201910365518.8A external-priority patent/CN111510269B/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20739216.8A priority Critical patent/EP3905541A4/en
Publication of WO2020143805A1 publication Critical patent/WO2020143805A1/zh
Priority to US17/372,172 priority patent/US11937191B2/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • the baseband signal is generated in the baseband.
  • the baseband signal generates a radio frequency signal through the radio frequency transmission link, and the radio frequency signal is transmitted through the antenna.
  • the radio frequency link includes a radio frequency integrated circuit and a power amplifier. PA), duplexer/filter.
  • PA power amplifier
  • the terminal reports the antenna capability of the terminal.
  • the antenna capability includes parameters such as the number of antenna ports, the number of layers, or the number of antennas.
  • the terminal supports multiple antenna ports, there is a one-to-one correspondence between the transmit antenna, the antenna port and the PA. Different PAs may correspond to different maximum transmit powers. Further, before the uplink transmission, the terminal will also report the maximum coherence capability between each transmitting antenna.
  • the coherent capabilities from large to small include complete coherent capabilities, partial coherent capabilities, and incoherent capabilities.
  • the full coherence capability indicates that all the transmitting antennas of the terminal have completed phase calibration and can perform phase weighting, that is, all antennas of the terminal can transmit the same data layer.
  • the non-coherent capability means that the phase calibration has not been completed between any two transmit antennas of the terminal, and neither can transmit the same data layer by phase weighting. Part of the ability to work is somewhere between the two.
  • the number of layers refers to the number of data layers, and may also be referred to as the number of streams, that is, the number of streams of signals that are not related to each other when the transmitted data is pre-encoded.
  • the network device indicates the uplink transmission mode to the terminal through the codebook according to the maximum coherence capability between the transmit antennas reported by the terminal. Specifically, the network device and the terminal pre-store the uplink transmission codebook indicated by multiple tables, and the codewords in the codebook may be indicated by a precoding indicator (TPMI) index value, and the codeword is used to determine the uplink The precoding matrix for data transmission.
  • the network device indicates the uplink transmission layer (transmission, rankindicator, TRI) and TPMI to the terminal through downlink control information (DCI) signaling according to the uplink channel information corresponding to each antenna port, and the terminal sends uplink data according to the TRI and TPMI .
  • TPMI indicates that the row in the precoding matrix corresponding to the codeword represents the transmit antenna port, and the column represents the number of transmission layers. The non-zero row element represents the antenna port used for uplink transmission.
  • one implementation method in the prior art is that the terminal combines the number of non-zero antenna ports (the terminal determines according to the currently indicated TPMI) and the total number of antenna ports (the maximum antenna port that the terminal can support number) by the ratio of channel transmit power P, to obtain uplink transmission power P 1, the further the average uplink transmission power P 1 assigned to each non-zero transmit antenna ports.
  • the above ratio is a value less than 1 under certain TPMI instructions, for example, the TPMI type is a non-coherent codeword (2Tx, 4Tx), or the TPMI type is a partially coherent codeword (4Tx), so for partial coherent or non-coherent capabilities
  • the total transmission power of the terminal and the non-zero antenna port of the terminal used for uplink transmission is less than the channel transmission power. Since the maximum value of the channel transmission power is the rated maximum transmission power, this power determination method makes the The sum of the actual transmission power of the zero antenna port cannot reach the maximum transmission power.
  • Another power determination method in the prior art is that, for terminals with partial or non-coherent capabilities, the channel transmission power P is evenly distributed to each non-zero transmit antenna without power reduction, so that terminals with different coherent capabilities
  • the upstream transmission can reach the rated maximum transmission power.
  • selecting different PAs for uplink transmission through TPMI may achieve different maximum transmission powers. For example, when TPMI indicates When a terminal device configured with a high-power PA can directly support full-power transmission, a terminal device configured with two low-power PAs can only support full-power transmission through antenna virtualization.
  • the above implementation method requires the terminal to notify the network device Therefore, the network device determines the optimal TPMI for uplink data transmission, and cannot obtain an accurate modulation coding scheme (MCS) for uplink transmission, thereby causing performance loss of uplink transmission.
  • MCS modulation coding scheme
  • Embodiments of the present application provide a communication method and device to solve the problem that the prior art cannot achieve the solution of maximum transmission power for uplink transmission of a terminal.
  • a communication method is provided.
  • the method may be executed by a terminal.
  • the method may be implemented in the following manner: the terminal determines capability indication information, the capability indication information is used to determine a power reduction factor, and the power reduction factor Is the ratio of the sum of the actual transmission power of n non-zero antenna ports to the channel transmission power, the maximum value of the channel transmission power is the maximum transmission power rated by the system, and n is a positive integer; the capability indication information is used to indicate a Or multiple codewords; and/or, the capability indication information is used to indicate the number of additional configured sounding reference signal SRS ports when the maximum transmission rank value is x, and the number of additional configured SRS ports is different from Maximum number of antenna ports; and/or, the capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank value is x; and/or, the capability indication information is used Indicating that when the transmission rank value is x, the value of the power reduction factor; wherein, the value
  • the power reduction factor includes one or more of n/M, n/N, or 1, where n is a positive integer less than or equal to M, M is the number of reference signal ports, and M Is a positive integer less than or equal to N, where N is the maximum number of transmission ports that the terminal can support and N is a positive integer.
  • the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords: Where the value of a is 1 or And/or, the one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords: Where the value of a is 1 or The value of b is at least one of 1, -1, j, and -j.
  • the one or more codewords indicated by the capability indication information include one or more of the first codeword group, and the first codeword group includes at least one of the following codewords:
  • the one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes at least one of the following codewords:
  • the value of a is Or 0.5; and/or,
  • the one or more codewords indicated by the capability indication information include one or more of the third codeword group, and the third codeword group includes at least one of the following codewords:
  • the value of a is Or 0.5; and/or,
  • the one or more codewords indicated by the capability indication information include one or more of the fourth codeword group, and the fourth codeword group includes Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; and/or,
  • the one or more codewords indicated by the capability indication information include a fifth codeword group, and the fifth codeword group includes at least one of the following codewords:
  • the value of b is Or 2; and/or,
  • the one or more codewords indicated by the capability indication information include a sixth codeword group, and the sixth codeword group includes at least one of the following codewords:
  • c1 and d1 are one or more of 1, -1, j, and -j, respectively; and/or,
  • the one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:
  • e1, f1, g1, e2, f2, g2 is one or more of 1, -1, j, -j; and/or,
  • the one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:
  • the one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:
  • the one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:
  • the five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords, and four codes in the first codeword group Words; or, 4 bits of the capability indication information respectively correspond to the four code words in the first codeword group; and/or, one bit of the capability indication information corresponds to the second code word Part or all of the code words in the group; and/or, one bit of the capability indication information corresponds to part or all of the code words in the third code word group; and/or, one bit of the capability indication information Bit corresponds to part or all of the codewords in the fourth codeword group; and/or, one bit of the capability indication information corresponds to part or all of the codewords in the sixth codeword group; and/or, One bit of the capability indication information corresponds to part or all of the codewords in the seventh codeword group; and/or, one bit of the capability indication information corresponds to the codeword in the eighth codeword group ; And/or, one bit of the capability indication information corresponds
  • the three codewords in the fifth codeword group respectively correspond to three bits in the capability indication information, wherein, among the three codewords in the fifth codeword group There are codewords with non-zero elements located in the first row, the second row, the third row, and the fourth row respectively; or, the fifth codeword group includes one or more of the following codeword sets:
  • the codeword set respectively corresponds to a status bit of the capability indication information.
  • the information indicated by the capability indication information includes that the one or more codewords are used to support a power reduction factor of 1, or to support actual transmission of n non-zero antenna ports
  • the sum of the powers can reach the maximum transmission power rated by the system, or it can be used to directly distribute the channel transmission power to the non-zero antenna ports.
  • the one or more codewords are the first codeword group to the tenth codeword.
  • the codewords in the group or the codewords in the codeword group 1 and the codeword group 2; and/or, the information indicated by the capability indication information further includes other codewords than the one or more codewords Used to support a power reduction factor of 1/N, or to support the sum of the actual transmission power of n non-zero antenna ports that cannot reach the maximum transmission power rated by the system, or to support the channel transmission power first Multiplied by the power reduction factor and evenly distributed to the non-zero antenna ports, the other codewords except for one or more codewords are the codewords or codeword groups from the first codeword group to the tenth codeword group 1 and the codeword in codeword group 2.
  • the one or more codewords are used to support a power reduction factor of 1, indicating that SRS resources with different numbers of ports need to be configured. Further, the SRS resources with different numbers of ports are configured in one SRS resource set.
  • the one or more codewords are used to support a power reduction factor of 1, indicating that SRS resources with different numbers of ports need to be configured, and indicating the number of ports with SRS resources that need to be additionally configured. Further, the SRS resources with different numbers of ports are configured in one SRS resource set.
  • the first bit of the capability indication information has a value of 1 and a codeword in one or a group of codewords corresponding to the first bit is indicated by DCI
  • the power reduction factor is 1, wherein the first data is scheduled by the DCI.
  • the first bit of the capability indication information has a value of 0 and a codeword in one or a group of codewords corresponding to the first bit is indicated by DCI
  • the first data The power reduction factor is n/M, or n/N, wherein the first data is scheduled by the DCI.
  • the capability indication information is used to indicate one or more codewords, and, when the maximum transmission rank value is x, the number of ports of the reference signal SRS, when the capability indication information indicates the When there are zero codewords in the first codeword group, or when the bits corresponding to the first codeword group in the capability indication information are all set to 0, when the maximum transmission rank value is 1, the The number of ports of the reference signal SRS is an integer greater than or equal to 1; and/or, when the bits corresponding to the fifth codeword group in the capability indication information are all set to 0, when the maximum transmission rank rank is 2
  • the number of SRS ports is an integer greater than or equal to 2.
  • the capability indication information corresponds to When the bit position of is 1, the number of ports of the SRS is 1; or, when the capability indication information corresponds to When the bit position is 1, the number of SRS ports is 1.
  • the value of x is ⁇ 1 ⁇ , ⁇ 2 ⁇ and/or ⁇ 3 ⁇ ; or, the value of x is ⁇ 1,2 ⁇ and/or ⁇ 3 ⁇ ; or , The value of x is ⁇ 1 ⁇ and/or ⁇ 2,3 ⁇ .
  • the value of the power reduction factor of the first data is determined to be n/M or 1, wherein the sending port of the first data is determined according to the first SRS, and the number of ports of the first SRS The number of reference signal SRS ports indicated by the capability indication information.
  • the SRS resource set includes multiple SRS resources, the number of ports of the SRS resources in the multiple SRS resources is different, and there is at least one SRS resource port number and the capability in the SRS resource set
  • the number of ports of the SRS indicated by the indication information is the same, or the sum of the number of ports of some SRS resources in the SRS resource set is the same as the number of ports of the SRS indicated by the capability indication information.
  • the number of ports of the SRS is less than N, or the type of the SRS is virtualization.
  • the value of x is ⁇ 2 ⁇ and/or ⁇ 3 ⁇ and/or ⁇ 2,3 ⁇ , and the capability indication information is also used to indicate one or more codewords.
  • the capability indication information indicates or At this time, the terminal device requests an SRS with a configuration port number of 1, or the terminal device request type is a virtualized SRS; and/or, the capability indication information indicates , The value of b is 1 or The power reduction factor is 1.
  • the capability indication information indicates or or or at this time, the terminal device requests an SRS with a configuration port number of 1, or the terminal device request type is a virtualized SRS; and/or, the capability indication information indicates or or or or or or or , The terminal device requests an SRS with a configuration port number of 2, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates or or or or or at this time, the terminal device requests to configure two SRSs with a port number of 1, or the terminal device requests a virtualized SRS.
  • a communication method includes: a network device receives capability indication information from a terminal; the capability indication information is used to determine a power reduction factor, and the power reduction factor is an actual transmission of n non-zero antenna ports The ratio of the total power to the channel transmission power.
  • the maximum value of the channel transmission power is the maximum transmission power rated by the system, and n is a positive integer; the capability indication information is used to indicate one or more codewords; and/or, The capability indication information is used to indicate the number of additional configured sounding reference signal SRS ports when the maximum transmission rank value is x.
  • the number of additional configured SRS ports is different from the maximum number of antenna ports; and/or
  • the capability indication information is used to indicate whether the configuration of multiple SRS resources with different port numbers is supported when the maximum transmission rank value is x; and/or, the capability indication information is used to indicate when the transmission rank value is x,
  • the method further includes: the network device determines that the power reduction factor of the first data is 1; the network device sends downlink control information DCI to the terminal; wherein, the DCI is used for scheduling In the first data, a codeword used in the first data is a codeword in one or a group of codewords in which the first bit of the capability indication information has a value of 1 and the first bit corresponds.
  • the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords: Where the value of a is 1 or And/or, the one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords: Where the value of a is 1 or The value of b is at least one of 1, -1, j, and -j.
  • the one or more codewords indicated by the capability indication information include one or more of the first codeword group, and the first codeword group includes at least one of the following codewords: Wherein, the value of a is 1 or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes the following At least one of the codewords: Among them, the value of a is Or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of the third codeword group, and the third codeword group includes at least one of the following codewords:
  • the value of a is Or 0.5; and/or, the one or more codewords indicated by the capability indication information include one or more of the fourth codeword group, the fourth codeword group includes Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; and/or one or more codewords indicated by the capability indication information include a fifth codeword Group, the fifth codeword group includes at least one of the following codewords: Among them, the value of b is Or 2; and/or, the one or more codewords indicated by the capability indication information include a sixth codeword group, and the sixth codeword group includes at least one of the following codewords: Wherein, the values of c1 and d1 are one or more of 1, -1, j, and -j, respectively; and/or, the one or more codewords indicated by the capability indication information include a seventh codeword group, The seventh codeword group includes the following codewords: Wherein, the value of e1, f
  • the five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords, and four codes in the first codeword group Words; or, 4 bits of the capability indication information respectively correspond to the four code words in the first codeword group; and/or, one bit of the capability indication information corresponds to the second code word Part or all of the code words in the group; and/or, one bit of the capability indication information corresponds to part or all of the code words in the third code word group; and/or, one bit of the capability indication information Bit corresponds to part or all of the codewords in the fourth codeword group; and/or, one bit of the capability indication information corresponds to part or all of the codewords in the sixth codeword group; and/or, One bit of the capability indication information corresponds to part or all of the codewords in the seventh codeword group; and/or, one bit of the capability indication information corresponds to the codeword in the eighth codeword group ; And/or, one bit of the capability indication information corresponds
  • the three codewords in the fifth codeword group respectively correspond to three bits in the capability indication information, wherein, among the three codewords in the fifth codeword group There are codewords with non-zero elements located in the first row, the second row, the third row, and the fourth row respectively; or, the fifth codeword group includes one or more of the following codeword sets:
  • the codeword set respectively corresponds to a status bit of the capability indication information.
  • the location of the first data is 1, wherein the first data is scheduled by the DCI.
  • the location of the first data is n/M, or n/N, where the first data is scheduled by the DCI.
  • the capability indication information is used to indicate one or more codewords, and, when the maximum transmission rank value is x, the number of ports of the reference signal SRS, when the capability indication information indicates the When there are zero codewords in the first codeword group, or when the bits corresponding to the first codeword group in the capability indication information are all set to 0, when the maximum transmission rank value is 1, the The number of ports of the reference signal SRS is an integer greater than or equal to 1; and/or, when the bits corresponding to the fifth codeword group in the capability indication information are all set to 0, when the maximum transmission rank rank is 2
  • the number of SRS ports is an integer greater than or equal to 2.
  • the capability indication information corresponds to When the bit position of is 1, the number of ports of the SRS is 1; or, when the capability indication information corresponds to When the bit position is 1, the number of SRS ports is 1.
  • the value of x is ⁇ 1 ⁇ , ⁇ 2 ⁇ and/or ⁇ 3 ⁇ ; or, the value of x is ⁇ 1,2 ⁇ and/or ⁇ 3 ⁇ ; or , The value of x is ⁇ 1 ⁇ and/or ⁇ 2,3 ⁇ .
  • the value of the power reduction factor of the first data is determined to be n/M or 1, wherein the sending port of the first data is determined according to the first SRS, and the number of ports of the first SRS The number of reference signal SRS ports indicated by the capability indication information.
  • the SRS resource set includes multiple SRS resources, the number of ports of the SRS resources in the multiple SRS resources is different, and there is at least one SRS resource port number and the capability in the SRS resource set
  • the number of ports of the SRS indicated by the indication information is the same, or the sum of the number of ports of some SRS resources in the SRS resource set is the same as the number of ports of the SRS indicated by the capability indication information.
  • the number of ports of the SRS is less than N, or the type of the SRS is virtualization.
  • the value of x is ⁇ 2 ⁇ and/or ⁇ 3 ⁇ and/or ⁇ 2,3 ⁇ , and the capability indication information is also used to indicate one or more codewords.
  • the capability indication information indicates or At this time, the terminal device requests an SRS with a configuration port number of 1, or the terminal device request type is a virtualized SRS; and/or, the capability indication information indicates , The value of b is 1 or The power reduction factor is 1.
  • the capability indication information indicates or or or at this time, the terminal device requests an SRS with a configuration port number of 1, or the terminal device request type is a virtualized SRS; and/or, the capability indication information indicates or or or or or or or , The terminal device requests an SRS with a configuration port number of 2, or the terminal device requests a virtualized SRS; and/or, the capability indication information indicates or or or or or at this time, the terminal device requests to configure two SRSs with a port number of 1, or the terminal device requests a virtualized SRS.
  • a communication device which is applied to a terminal, or the device is a terminal, and the device has a function of implementing the method in any of the above-mentioned first aspects and any possible design of the first aspect, which It includes means corresponding to the steps or functions described in the above aspects.
  • the steps or functions may be implemented by software, or hardware (such as a circuit), or a combination of hardware and software.
  • the above communication device includes one or more processors and a communication unit.
  • the one or more processors are configured to support the signal processing device to perform the functions in the above method.
  • the communication unit is used to support the communication device to communicate with other devices to implement receiving and/or sending functions. For example, sending capability indication information.
  • the communication device may further include one or more memories, and the memory is used for coupling with the processor, which stores necessary program instructions and/or data of the device.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.
  • the communication unit may be a transceiver or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device may also be a communication chip.
  • the communication unit may be an input/output circuit or an interface of a communication chip.
  • the above communication device includes a transceiver, a processor, and a memory.
  • the processor is used to control a transceiver or an input/output circuit to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the device performs the first aspect or any one of the first aspects Possible design methods.
  • a communication device which is applied to a network device, or the device is a network device, and the device has a function of implementing a method in any of the above-mentioned second aspects and any possible design of the second aspect , which includes means corresponding to the steps or functions described in the above aspects.
  • the steps or functions may be implemented by software, or hardware (such as a circuit), or a combination of hardware and software.
  • the above communication device includes one or more processors and a communication unit.
  • the one or more processors are configured to support the signal processing device to perform the functions in the above method.
  • the calling communication unit receives and/or sends signals.
  • the communication unit is used to support the communication device to communicate with other devices to implement receiving and/or sending functions. For example, receiving capability indication information, and sending downlink control information according to the first codeword.
  • the communication device may further include one or more memories, and the memory is used for coupling with the processor, which stores necessary program instructions and/or data of the device.
  • the one or more memories may be integrated with the processor, or may be provided separately from the processor. This application is not limited.
  • the communication unit may be a transceiver or a transceiver circuit.
  • the transceiver may also be an input/output circuit or an interface.
  • the device may also be a communication chip.
  • the communication unit may be an input/output circuit or an interface of a communication chip.
  • the above communication device includes a transceiver, a processor, and a memory.
  • the processor is used to control a transceiver or an input/output circuit to send and receive signals
  • the memory is used to store a computer program
  • the processor is used to run the computer program in the memory so that the device executes the second aspect or any of the second aspect Possible design methods.
  • a system including a terminal and a network device, wherein the terminal is used to perform the method described in the first aspect or any possible design of the first aspect; or, The network device is used to perform the method described in the second aspect or any possible design of the second aspect.
  • a computer-readable storage medium for storing a computer program, the computer program including instructions for performing the methods in the above aspects.
  • a computer program product includes: computer program code, which, when the computer program code runs on a computer, causes the computer to execute the methods in the above aspects.
  • FIG. 1 is a schematic diagram of an architecture of a communication system in an embodiment of this application.
  • FIG. 2 is a schematic flowchart of a communication method in an embodiment of this application.
  • FIG. 3 is one of the schematic diagrams of antenna shapes that can be finally supported by the 2 antenna ports in the embodiment of the present application;
  • FIG. 4 is a second schematic diagram of an antenna form that can ultimately be supported by 2 antenna ports in the embodiment of the present application;
  • FIG. 5 is a third schematic diagram of an antenna form that can ultimately be supported by 2 antenna ports in the embodiment of the present application.
  • FIG. 6 is one of the schematic diagrams of the antenna shapes that can ultimately be supported by the 4 antenna ports in the embodiment of the present application;
  • FIG. 7 is a second schematic diagram of an antenna form that can ultimately be supported by 4 antenna ports in an embodiment of the present application;
  • FIG. 8 is a third schematic diagram of an antenna form that can ultimately be supported by a 4-antenna port in an embodiment of the present application;
  • FIG. 9 is a fourth schematic diagram of an antenna form that can ultimately be supported by 4 antenna ports in the embodiment of the present application.
  • FIG. 10 is a fifth schematic diagram of an antenna form that can ultimately be supported by a 4-antenna port according to an embodiment of the present application;
  • FIG. 11 is a sixth schematic diagram of an antenna form that can ultimately be supported by a 4-antenna port in an embodiment of the present application;
  • FIG. 12 is a first structural schematic diagram of a communication device in an embodiment of the present application.
  • FIG. 13 is a second structural diagram of a communication device in an embodiment of the present application.
  • Embodiments of the present application provide a communication method and device.
  • the terminal implicitly reports the antenna architecture of the terminal by reporting the codeword according to the codeword predefined with the network device. On the basis of not revealing the antenna architecture of the terminal, the network The device can determine the TPMI and MCS of the uplink transmission more accurately according to the codeword, thereby ensuring the performance of the uplink transmission.
  • the method and the device are based on the same concept. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated here.
  • the signal processing method provided in the embodiments of the present application can be applied to various communication systems, for example, a long term evolution (LTE) system, a global interoperability for microwave access (WiMAX) communication system, and a future 5th generation (5G) system, such as new generation radio access technology (NR), and future communication system, such as 6G system, etc.
  • LTE long term evolution
  • WiMAX global interoperability for microwave access
  • 5G future 5th generation
  • NR new generation radio access technology
  • 6G system future communication system
  • the network architecture and business scenarios described in the embodiments of the present application are to more clearly explain the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. With the evolution of the architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are also applicable to similar technical problems.
  • FIG. 1 shows a possible communication system architecture applicable to the communication method provided by the embodiment of the present application.
  • the communication system 100 includes: The communication system 100 includes: a network device 101 and a terminal 102.
  • the network device 101 is a device with a wireless transceiver function or a chip that can be installed in the device.
  • the device includes but is not limited to: evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), Node B (Node B, NB), base station controller (BSC), base transceiver station (BTS), home base station (eg, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (TRP or transmission) in a wireless fidelity (WIFI) system point, TP), etc.
  • 5G such as NR, gNB in the system, or, transmission point (TRP or TP), one or a group of base stations in the 5G system (including multiple antenna panels) antenna panels, Alternatively, it may be a network node that constitutes a gNB or a transmission point, such as a baseband unit
  • gNB may include a centralized unit (CU) and DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (RRC), packet data convergence layer protocol (packet data convergence protocol, PDCP) layer functions, DU implements wireless chain Road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence layer protocol
  • DU implements wireless chain Road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the access network RAN, and can also be divided into network devices in the core network CN, which is not limited herein.
  • Terminal equipment may also be called user equipment (user equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user Agent or user device.
  • the terminal devices in the embodiments of the present application may be mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality (virtual reality, VR) terminal devices, and augmented reality (augmented reality, AR) terminals.
  • Wireless terminals in equipment industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical (remote medical), wireless terminals in smart grid (smart grid), transportation safety ( Wireless terminals in transportation, safety terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit application scenarios.
  • a terminal device having a wireless transceiver function and a chip that can be provided in the terminal device are collectively referred to as a terminal device.
  • Antenna ports including uplink data channels, such as the physical uplink shared channel (PUSCH) antenna port; the antenna port for demodulation reference signals, such as the antenna port for demodulation reference signals (DMRS); or Antenna port for channel sounding reference signal, such as sounding reference signal (SRS) antenna port.
  • the antenna port refers to an antenna port used to carry a specific physical channel and/or physical signal. Signals sent through the same antenna port, no matter whether these signals are sent through the same or different physical antennas, the channels corresponding to the paths they experience in spatial transmission can be regarded as the same or related, that is, on the same antenna The signal sent by the port can be considered to be the same or related by the receiver during demodulation.
  • Antenna port is a logical meaning.
  • the signal receiving end recognizes signals with different transmission channels through the antenna port.
  • the antenna port may be regarded as a transmitting antenna port, and the antenna may be regarded as a transmitting antenna.
  • the antenna ports of the PUSCH and DMRS are usually logical ports, that is, each antenna port of the PUSCH and DMRS can be virtualized through the physical port of the terminal device, or weighted by a specific precoding matrix on multiple physical ports.
  • a logical port formed on the port, and each PUSCH and DMRS antenna port may correspond to a transmission layer.
  • the SRS antenna port can be a physical antenna port, that is, each terminal's transmission link corresponds to an SRS antenna port, and the transmission link includes a radio frequency RF, a power amplifier PA, and a transmission link composed of a physical antenna; it can also be The logical port, that is, the antenna port of each SRS is formed by multiple physical antennas or transmission links through virtualization.
  • the following describes the uplink transmission mechanism based on the codebook.
  • Antenna capabilities can include the number of antennas, the maximum number of transmission layers corresponding to PUSCH and DMRS that can be supported, the number of RF links, the number of antennas, the number of PAs, the number of SRS antenna ports that can be supported, the maximum number of RF links, or the maximum number of antennas Any one or more of them.
  • the number of antennas may include 1, 2, or 4, for example, and may be reported directly, or may be reported implicitly through the maximum number of SRS antenna ports.
  • the number of transmission layers refers to the number of orthogonal signal streams spatially formed by a transmission block (TB) or codeword (codeword), and the transmission layer can be mapped to each antenna port for transmission according to a precoding method.
  • the terminal uses four antenna ports to send data, but the four antenna ports use the same precoding method to send the same layer of data, and the four antenna ports use another precoding method to send another layer of data.
  • the four antenna ports include port 0, port 1, port 2, and port 3.
  • the terminal uses port 0 and port 1 to send layer 1 data, and uses port 2 and port 3 layer 2 data.
  • the maximum number of transmission layers corresponding to the PUSCH and DMRS that can be supported is equal to the number of SRS antenna ports that can be supported (in one SRS resource), and they are connected to the transmission link of the terminal Or the number of antennas is usually the same, for example, a 4-antenna terminal device can usually support a maximum of 4 layers of PUSCH transmission, and can also support a maximum of 4 ports of SRS resource configuration.
  • One or more of the above antenna capabilities correspond to N in the present invention, that is, the maximum number of antenna ports.
  • the terminal will also report the maximum coherence capability between each transmitting antenna.
  • coherent capabilities include fully-coherent and non-coherent capabilities.
  • the fully-coherent capability indicates that the phase calibration between the two transmit antenna ports of the terminal is completed, and phase weighting can be performed, that is, two transmit antennas can be used to transmit the same layer of data.
  • the non-coherent capability indicates that the phase calibration between the two transmit antennas of the terminal is not completed, and it is not possible to perform phase weighting to send the same layer of data, that is, only one antenna can be used to send the same layer of data.
  • coherent capabilities include fully-coherent capabilities, partially-coherent capabilities, and non-coherent capabilities.
  • the fully coherent (fully-coherent) capability indicates that all the transmit antennas of the UE have completed phase calibration and can be phase-weighted, that is, all UE antennas can transmit the same data layer.
  • Partially-coherent capability shows that the phase calibration can be performed in the pair of transmit antenna groups of the UE, and the phase weighting can be performed, but the phase calibration between the pair of transmit antenna groups of the UE is not completed, and the phase weighting cannot be performed, that is, the antenna group
  • the two transmit antennas inside can send the same layer of data.
  • the non-coherent capability indicates that none of the four transmit antennas of the UE has completed phase calibration, and no phase weighting can be used to transmit the same data layer. That is, for the same layer of data, only one antenna can be used for transmission.
  • the network device needs to obtain channel information before scheduling uplink data.
  • the terminal needs to send a sounding reference signal (SRS).
  • SRS sounding reference signal
  • the network device determines the uplink channel quality by receiving and measuring SRS, thereby performing uplink frequency selective scheduling. Since the terminal may have multiple transmit antenna ports, usually the SRS resource of the terminal has multiple ports, respectively corresponding to multiple transmit antenna ports of the terminal.
  • the base station can obtain channel information on each transmit antenna by measuring multiple ports of the SRS, so that it can indicate the precoding method of each transmit port used for uplink data such as PUSCH transmission.
  • the base station configures the number of antenna ports in the SRS resource to be equal to the maximum number of SRS antenna ports reported by the terminal, so that an appropriate terminal antenna port can be selected for data transmission.
  • the network device indicates to the terminal the precoding method of each transmission port and the selection of an appropriate antenna port for data transmission can be implemented based on a codebook.
  • Network devices and terminals store multiple codebooks in advance for different antenna port numbers, different layer numbers, or different waveforms.
  • a codebook can also be considered as a collection of codewords.
  • the codebook used for uplink transmission is shown in Table 1 to Table 7.
  • Each codeword in the codebook is arranged in order of increasing TPMI index values from left to right in the table.
  • the terminal sends the SRS on the SRS resource configured by the network device. If there are multiple ports, the SRS can be sent on the multiple ports separately.
  • the network device receives and measures the SRS on the corresponding SRS resource to obtain uplink channel information.
  • the network device Based on the channel information, the network device indicates the transmission layer number (TRI) and TPMI of uplink transmission to the terminal through downlink control information (such as DCI).
  • the terminal sends uplink data according to the TRI and TPMI indicated in the DCI.
  • the DCI will also indicate SRS resource selection information (SRS resource indication, SRI), and the terminal device will use the SRS resource indicated by the SRI on the antenna port used for sending the SRS when the PUSCH sends the PUSCH.
  • SRS resource indication SRI
  • the network device selects a codeword that matches the coherence capability of the terminal according to the maximum coherence capability of the terminal.
  • the maximum coherence capability reported by the terminal is fully coherent
  • the network device may indicate the use of fully coherent, partially correlated, and non-coherent type code words, or partially coherent and non-coherent type code words, or non-coherent type code words.
  • the network device instructs to use partial coherent and non-coherent type codewords, or adopt non-coherent type codewords.
  • W represents a precoding matrix
  • a TPMI index corresponds to a precoding matrix, or corresponds to a codeword.
  • the row in the codeword corresponds to multiple transmit antenna ports of the terminal device, and each column corresponds to the antenna port used by the transmission layer in turn. For a column, if the element of a row is non-zero, it indicates the antenna port corresponding to the row It is used to transmit the transmission layer corresponding to the column.
  • different rows in the same column can indicate different values, corresponding to the phase weighting of different antenna ports on the transmission layer.
  • Table 1 is the codebook transmitted at the layer 1 of the 2 antenna ports. There are 6 TPMI index values, including 0 to 5. The codewords corresponding to the index values 0 and 1 are non-coherent type codewords. The codewords corresponding to index values 2 to 5 are completely coherent type codewords. For example, the code word corresponding to TPMI0 indicates that the current data transmission uses layer 1, and the layer transmission uses port 0.
  • Table 2 is the codebook of the 2-layer transmission of the 2 antenna ports. There are 3 TPMI index values, including 0 ⁇ 2.
  • the codeword corresponding to the index value 0 is a non-coherent type codeword.
  • the codewords corresponding to index values 1 and 2 are completely coherent type codewords. For example, the codeword corresponding to TPMI0 indicates that the current data transmission uses layer 2, layer 1 transmission uses port 0, and layer 2 transmission uses port 1.
  • Table 3 shows the codebook of the spread Fourier Transform Orthogonal Frequency Division Multiplexing (DFT-spread OFDM, DFT-s-OFDM) waveform of layer 1 transmission on the 4-antenna port.
  • DFT-spread OFDM Orthogonal Frequency Division Multiplexing
  • Table 3 shows the codebook of the spread Fourier Transform Orthogonal Frequency Division Multiplexing (DFT-spread OFDM, DFT-s-OFDM) waveform of layer 1 transmission on the 4-antenna port.
  • TPMI index values including 0 to 27.
  • Codewords corresponding to index values 0 to 3 are non-coherent type codewords.
  • the code words corresponding to index values 4 to 11 are partially coherent type code words.
  • the code words corresponding to the index values 12 to 27 are completely coherent type code words.
  • Table 4 shows the codebook of the cyclic prefix (CP)-OFDM waveform of the 4-layer antenna layer 1 transmission.
  • CP cyclic prefix
  • Table 4 shows the codebook of the cyclic prefix (CP)-OFDM waveform of the 4-layer antenna layer 1 transmission.
  • TPMI index values including 0 to 27.
  • Codewords corresponding to index values 0 to 3 are non-coherent type codewords.
  • the code words corresponding to index values 4 to 11 are partially coherent type code words.
  • the code words corresponding to the index values 12 to 27 are completely coherent type code words.
  • Table 5 shows the codebook of CP-OFDM waveforms transmitted on 2 layers at 4 antenna ports.
  • the code words corresponding to the index values 0 to 5 are non-coherent type code words.
  • the codewords corresponding to index values 6 to 13 are partially coherent type codewords.
  • the code words corresponding to the index values 14 to 21 are completely coherent type code words.
  • Table 6 shows the codebook for CP-OFDM waveform transmission on the three layers of 4 antenna ports. There are 7 TPMI index values, including 0 to 6.
  • the codeword corresponding to the index value 0 is a non-coherent type codeword.
  • the codewords corresponding to the index values 1 to 2 are partially related codewords.
  • the codewords corresponding to index values 3 to 6 are completely coherent type codewords.
  • Table 7 shows the codebook for CP-OFDM waveform transmission on 4 layers at 4 antenna ports.
  • the codeword corresponding to the index value 0 is a non-coherent type codeword.
  • the codewords corresponding to the index values 1 to 2 are partially related codewords.
  • the code words corresponding to the index values 3 to 4 are completely coherent type code words.
  • the representation of the codebook is processed in the form of a table, and can also be embodied in other ways.
  • the following describes the determination mechanism of the transmission power of the terminal.
  • the terminal needs to determine the channel transmission power of the uplink transmission before uplink transmission. Take PUSCH transmission as an example.
  • the actual transmission power of the terminal's uplink transmission is the ratio of the number of non-zero antenna ports to the maximum number of antenna ports that the terminal can support times the channel transmission power P PUSCH,b,f,c (i,j,q d ,l), where the ratio of the number of non-zero antenna ports n to the maximum number of antenna ports supported by the terminal is the power reduction factor, which is equal to The ratio of the actual transmission power to the channel transmission power.
  • the actual transmission power of the uplink transmission is the sum of the actual transmission power of n non-zero antenna ports, where the n non-zero antenna ports are determined according to the TPMI indicated by the base station. Specifically, n The number of lines containing at least one non-zero element in the codeword corresponding to TPMI. Further, the obtained reduced channel transmission power is divided equally to each non-zero antenna port, and the non-zero antenna port is determined according to the TPMI in Table 1-7 above.
  • the actual PUSCH transmission power is 1/4P PUSCH,b,f,c (i ,j,q d ,l), the transmission power will be allocated to port 0;
  • Table 5 if the network device indicates TPMI 0, the number of non-zero PUSCH transmission antenna ports is 2, and the number of configured antenna ports is 4, the actual PUSCH transmission power is 1/2 P PUSCH, b, f, c (i, j, q d , l), the transmission power will be allocated to port 0 and port 2, then each antenna port The power is 1/4P PUSCH,b,f,c (i,j,q d ,l).
  • the network device indicates TPMI 7
  • the number of antenna ports for non-zero PUSCH transmission is 4, and the total number of antenna ports configured is 4,
  • the actual PUSCH transmission power is P PUSCH,b,f,c (i,j,q d ,l)
  • the power on each antenna port is 1/4P PUSCH,b,f,c (i,j , q d , l).
  • the terminal determines the channel transmission power P PUSCH,b,f,c (i,j,q d ,l) according to the following formula:
  • b is the physical uplink shared channel (physical uplink shared channel, PUSCH) transmission part of the bandwidth (bandwidth part, BWP)
  • f is the PUSCH transmission carrier (carrier)
  • c is the serving cell where the carrier ( serving (cell)
  • l is a set of power control parameters configured by the network device through high-level signaling.
  • the following parameter values of high-level signaling configuration are all configured in the set of power control parameters:
  • p CMAX,f,c (i) is the maximum transmission power that the communication system can allow, that is, the maximum transmission power rated by the system.
  • the maximum transmission power value can fluctuate according to the protocol and the actual transmission channel conditions; the system is rated
  • the maximum transmit power can represent the maximum power supported by the terminal device to send uplink data, or the maximum transmit power that the terminal device can support.
  • the maximum transmission power may be the transmission power configured by the network device to the terminal device, and represents the maximum transmission power that the network device allows the terminal device to use.
  • the maximum transmission power may also be the maximum transmission power that the network device has agreed that the terminal device can adopt.
  • p O_PUSCH, b, f, c (j) is the parameter value configured by the network device through high-level signaling.
  • the terminal device further determines the value according to the downlink control information (DCI).
  • DCI downlink control information
  • the corresponding indication field selects one of the multiple parameter values to determine, or selects one of the multiple parameter values according to a predefined rule to determine;
  • ⁇ a, b, c (j) are the parameter values configured by the network device through high-level signaling.
  • the terminal device further determines the corresponding values in the downlink control information (DCI)
  • DCI downlink control information
  • the instruction field selects one of the multiple parameter values to determine, or selects one of the multiple parameter values to determine according to a predefined rule;
  • PL b,f,c (q d ) is estimated based on the reference signal (reference resource, RS) configured by the network device;
  • the values of ⁇ TF, b, f, c (i) are related to the number of transmission layers, and can be related to the number of code blocks, the size of the code block, the number of REs occupied by the PUSCH, and the type of data carried on the PUSCH.
  • a calculation method of ⁇ TF, b, f, c (i) is Among them, K S indicates through high-level signaling that the value of BPRE is related to the number of code blocks, the size of the code block, and the number of REs occupied by PUSCH.
  • K S indicates through high-level signaling that the value of BPRE is related to the number of code blocks, the size of the code block, and the number of REs occupied by PUSCH.
  • f b,f,c (i,l) is determined according to the transmission power command (transmission power control, TPC) instructions carried in the DCI.
  • TPC transmission power control
  • the TPC indicates an absolute quantity
  • f b,f,c (i ,l) ⁇ PUSCH,b,f,c (i last ,i,K PUSCH ,l).
  • the terminal determines the transmission power used on each antenna port according to the channel transmission power and the number M of the configured antenna ports.
  • the transmission power of each antenna port is the ratio of channel transmission power to M.
  • the actual number of antenna ports used to send uplink data may be less than or equal to M, and the actual transmit power represents the total transmit power of the antenna ports actually used by the terminal when sending uplink data.
  • the actual transmission power is less than or equal to the channel transmission power.
  • the determination method of the prior art one can be understood as the channel transmission power is scaled down.
  • the total PUSCH transmission power is multiplied by the channel transmission power P PUSCH,b,f,c (i,j,q d ,l) according to the ratio of the number of non-zero antenna ports to the number of configured antenna ports ), in the prior art two, changed to: ⁇ P PUSCH, b, f, c (i, j, q d , l), where, when DCI indicates a completely coherent codeword, the value of ⁇ is: non-zero PUSCH corresponding Antenna/configured antenna; when DCI indicates some coherent/non-coherent codewords, the value of ⁇ is: antenna/configuration antenna corresponding to non-zero PUSCH multiplied by 2; when DCI indicates non-coherent codewords, ⁇ takes The value is: the antenna corresponding to the non-zero PUSCH; the effect of the prior art 2 is that when the TPMI indicates a partial coherent/non-coherent corresponding
  • the channel transmission power mentioned in the embodiments of the present application may be regarded as ⁇ P PUSCH, b, f, c (i, j, q d , l) in the prior art 2, that is, the transmission power without power reduction.
  • the terminal When the terminal transmits uplink data, it is necessary to determine the channel transmission power of the uplink transmission first.
  • the application can realize that the terminal uses the channel transmission power without power reduction to send the uplink data.
  • the maximum value of the channel transmission power is the maximum output power in the frequency band occupied by the terminal for uplink transmission.
  • the power level of the terminal if the power level of the terminal is defined, the channel transmission power should not be greater than the power level of the terminal, where the power level of the terminal can be adjusted according to the tolerance value. For example, as shown in Table 8, the power level and tolerance value of the terminal in different frequency bands are defined.
  • the maximum channel transmission power of the terminal does not exceed the adjusted power level.
  • the power level of the terminal in Table 8 is 23 dBm.
  • the maximum value of the channel transmission power of the terminal can be determined to be 23 dBm or a value smaller or larger than 23 dBm.
  • the antenna port of the terminal has the maximum transmission power according to the capabilities of the PA.
  • the terminal may not support the maximum transmission power of the channel for each antenna port.
  • the terminal may use a multiple antenna port virtualization method to reach the maximum transmission power of the channel.
  • the network device can indicate correct downlink control information for the terminal, and a communication method is designed in the embodiments of the present application.
  • the mechanism that the terminal uses no power reduction can also be referred to as the terminal adopting the full power transmission mechanism.
  • the so-called full power transmission mechanism means that the terminal allocates the channel transmission power obtained without the power reduction mechanism to the antenna port of the terminal and sends uplink data to the network device. .
  • the specific process of the communication method provided by the embodiment of the present application is as follows. Among them, any two or more consecutive steps may constitute a solution to be protected in this application, and the remaining steps are optional steps.
  • the solution composed of S201 to S202 is within the scope of protection of this application.
  • the terminal determines capability indication information.
  • the terminal sends capability indication information to the network device, and the network device receives the capability indication information from the terminal.
  • the capability indication information may be a capability that characterizes whether the transmission power of the terminal can reach the maximum transmission power rated by the system.
  • the capability indication information may also indicate a transmission mechanism or power control mechanism where the terminal device supports full power transmission. Whether and how the terminal's transmission power reaches the system's rated maximum transmission power depends on the terminal's antenna architecture for uplink transmission, such as the maximum transmission power of each PA.
  • the port corresponding to the PA When used for uplink transmission, it can reach the maximum transmission power rated by the system, that is, the channel transmission power can be allocated to the port; and the way the terminal realizes uplink transmission, such as whether to support antenna virtualization into an antenna port, The transmission power of the PA that reaches the system's rated maximum transmission power is combined to form an antenna port that can reach the system's rated maximum transmission power.
  • the capability indication information may also implicitly represent the antenna shape of the terminal's uplink transmission, or a transmission method that realizes full power transmission, so that the base station can select a reasonable TPMI and MCS.
  • the capability indication information is used to determine the value of the power reduction factor. It can be understood that the actual value of the power reduction factor can be further indicated by the base station.
  • the capability indication information here is only used to determine the maximum value of the power reduction factor. Value, or calculation method.
  • the power reduction factor is used to determine the sum of the actual transmission power of n non-zero antenna ports: the channel transmission power is multiplied by the power reduction factor.
  • the power reduction factor is determined according to the capability indication information, that is, the uplink transmission power is determined according to a power control mechanism that the terminal can support to achieve full power uplink transmission.
  • the determination of the power reduction factor may specifically determine the value of the power reduction factor, the calculation method of determining the power reduction factor, or the range of values of the power reduction factor, specifically:
  • Value 1 (calculation method 1 or value range 1): the power reduction factor is directly determined as 1, or the terminal device removes the power reduction operation in the step of determining the actual transmission power of each port, that is, each non-zero antenna
  • the port can directly share the channel transmission power, and the power reduction factor of 1 can make the actual transmission power of the uplink transmission reach the maximum transmission power rated by the system, or achieve full power transmission.
  • the actual transmission power of the uplink transmission Or, the total actual transmission power is the sum of the actual transmission power on each non-zero antenna port. When full power transmission is achieved, the total transmission power or the uplink transmission actual transmission power is the channel transmission power.
  • the PA configured by the terminal device can reach the maximum transmission power rated by the system, that is, the power reduction factor can be set to 1 for all codewords (in Table 1-7), or all can support full power Transmission mechanism.
  • the value 1 corresponds to full power transmission. For example, when the number of non-zero antenna ports is 1, in the case where the power reduction factor takes a value, the actual transmission power on the non-zero antenna port is the channel transmission power.
  • the actual transmission power determined by the terminal device may be slightly different from the channel transmission power, that is, the actual transmission power may be slightly larger than the maximum transmission power rated by the system.
  • the maximum transmission power rated by the system here is a reference for the terminal device to determine the maximum transmission power.
  • Value 2 (calculation method 2 or value range 2): The power reduction factor is equal to n/M, where n is the current number of non-zero antenna ports and M is the number of SRS ports in the current SRS resource. n is determined according to the TPMI indicated in the DCI scheduling uplink data, n is the number of matrix rows with non-zero elements in the precoding matrix corresponding to TPMI, and a non-zero antenna port indicates that the antenna port is used to send uplink data, or indicates that The antenna port is non-zero power; when the network device is configured with only one SRS resource, the value of M is determined according to the number of SRS ports included in the SRS resource, that is, M is equal to the number of ports in the SRS resource; when the network device is configured When there are multiple SRS resources, the value of M is determined according to the number of ports in the SRS resource indicated by the SRI in DCI, that is, M is equal to the number of ports in the SRS resource.
  • the base station may configure one 4-port SRS resource (number 0).
  • the power reduction factor is equal to 1/ 4 or 1/2
  • the maximum transmission power of the uplink data is 1/4 or 1/2 of the maximum transmission power rated by the system; if the base station is configured with one 1 port SRS resource (number 1) and one 2 port SRS resource (number 2), at this time, if the TPMI in the DCI indicates a non-coherent codeword or a partially coherent codeword and the SRI in the DCI indicates the SRS resource number 0, the power reduction factor is equal to 1/4 or 1/2 , The maximum transmission power of the uplink data is 1/4 or 1/2 of the maximum transmission power rated by the system; if the TPMI in the DCI indicates a non-coherent codeword or a partially coherent codeword and the SRI in the DCI indicates the SRS resource number 0 ,
  • the power reduction factor is equal to 1
  • the transmission power of the uplink data is equal to the channel transmission power
  • the maximum transmission power is the maximum transmission power rated by the system. At this time, it means that the terminal device has a PA that cannot reach the maximum transmission power rated by the system. That is, for some codewords (in Table 1-7), the power reduction factor cannot be set to 1, or the full power transmission mechanism cannot be supported.
  • the power reduction factor is equal to n/N, where n is the current number of non-zero antenna ports, and N is the maximum number of SRS ports that the terminal can support.
  • the number of SRS ports is usually It is the number of SRS ports in an SRS resource, or it can be the number of all SRS ports in an SRS resource set.
  • the power reduction factor is 1/4, and when the DCI indicates When you want to coherent codewords, the power reduction factor is 1/2.
  • the power reduction factor is 1/2. This means that the terminal device does not support the full power transmission mechanism.
  • the capability indication information is used to indicate a codeword.
  • a codeword For convenience of description, it is referred to herein as a first codeword.
  • the first codeword is expressed as a matrix of N*A, and N*A indicates that the dimension of the matrix is N rows A Columns, where A and N are positive integers, it should be understood that the first codeword can be represented and stored in the form of an array, each specific position in the array has specific elements, in this application, a row of the matrix / Columns, various transformations can be just for the convenience of description.
  • the terminal can directly schedule certain elements in the array to form a specific set, and the specific set corresponds to the function of the first codeword.
  • N may be reported to the base station by the terminal by another capability indication information different from the capability indication information.
  • the status bit of the capability indication information corresponds to one or a group of code words; or, the bit bit of the capability indication information corresponds to one or a group of code words.
  • the one or more codewords indicated by the capability indication information include codeword group 1, and the codeword group 1 includes at least one of the following codewords:
  • the one or more codewords indicated by the capability indication information include codeword group 2, and the codeword group 2 includes the following codewords:
  • a is 1 or
  • b is at least one of 1, -1, j, and -j.
  • the one or more codewords indicated by the capability indication information include one or more of the first codeword group, and the first codeword group includes at least one of the following codewords:
  • the one or more codewords indicated by the capability indication information include one or more of the second codeword group, and the second codeword group includes at least one of the following codewords:
  • the value of a is Or 0.5; and/or,
  • the one or more codewords indicated by the capability indication information include one or more of the third codeword group, and the third codeword group includes at least one of the following codewords:
  • the value of a is Or 0.5; and/or,
  • the one or more codewords indicated by the capability indication information include one or more of the fourth codeword group, and the fourth codeword group includes Wherein, the values of e, f, and g are respectively one or more of 1, -1, j, and -j; and/or,
  • the one or more codewords indicated by the capability indication information include a fifth codeword group, and the fifth codeword group includes at least one of the following codewords:
  • the value of b is Or 2; and/or,
  • the one or more codewords indicated by the capability indication information include a sixth codeword group, and the sixth codeword group includes at least one of the following codewords:
  • c1 and d1 are one or more of 1, -1, j, and -j, respectively; and/or,
  • the one or more codewords indicated by the capability indication information include a seventh codeword group, and the seventh codeword group includes the following codewords:
  • e1, f1, g1, e2, f2, g2 is one or more of 1, -1, j, -j; and/or,
  • the one or more codewords indicated by the capability indication information include an eighth codeword group, and the eighth codeword group includes the following codewords:
  • the one or more codewords indicated by the capability indication information include a ninth codeword group, and the ninth codeword group includes one or more of the following codewords:
  • the one or more codewords indicated by the capability indication information include a tenth codeword group, and the tenth codeword group includes one or more of the following codewords:
  • the five status bits of the capability indication information respectively correspond to zero codewords, one codeword, two codewords, three codewords, and four codewords in the first codeword group; or ,
  • the four bits of the capability indication information respectively correspond to the four codewords in the first codeword group; and/or,
  • One bit of the capability indication information corresponds to some or all codewords in the second codeword group; and/or,
  • One bit of the capability indication information corresponds to some or all codewords in the third codeword group; and/or,
  • One bit of the capability indication information corresponds to some or all code words in the fourth code word group; and/or,
  • One bit of the capability indication information corresponds to some or all codewords in the sixth codeword group; and/or,
  • One bit of the capability indication information corresponds to part or all of the codewords in the seventh codeword group; and/or,
  • One bit of the capability indication information corresponds to the codeword in the eighth codeword group; and/or,
  • One bit of the capability indication information corresponds to part or all of the codewords in the ninth codeword group; and/or,
  • One bit of the capability indication information corresponds to some or all codewords in the tenth codeword group; and/or,
  • the two bits of the capability indication information respectively correspond to the two codewords in the codeword group 1; and/or,
  • One bit of the capability indication information corresponds to one or more codewords in the codeword group 2.
  • the three codewords in the fifth codeword group respectively correspond to three bits in the capability indication information, wherein there are nonzeros in the three codewords in the fifth codeword group Codewords whose elements are in the first, second, third, and fourth lines; or,
  • the fifth codeword group includes one or more of the following codeword sets:
  • the codeword set respectively corresponds to a status bit of the capability indication information.
  • the maximum number of ports of the SRS is 4, and the value of A is at least one of 1, 2, and 3.
  • the number of the first codeword is not necessarily one, and there may be multiple.
  • Each row in the matrix corresponds to each antenna port of the terminal in turn, or it can correspond to the antenna port in the configured SRS resource, or the antenna port in the SRS resource indicated in the DCI, and each column in the matrix corresponds to each one in turn.
  • Transport layer In the embodiment of the present application, the non-zero antenna port may also be referred to as a non-zero power antenna port, and a non-zero element exists in a row corresponding to the non-zero antenna port.
  • the corresponding row elements of the zero antenna port in the matrix are all zero elements.
  • the codeword indicated by the capability indication information can be selected from Table 1-7.
  • the capability indication information may be in the form of a bitmap, that is, each bit of the capability indication information corresponds to a specific codeword, or corresponds to a specific set of codewords.
  • the terminal reports the capability indication information
  • a certain bit position is 1, it means that the terminal device supports one or a group of codewords corresponding to the bit bit for full power transmission.
  • a certain bit position is 0, it means that the terminal device does not support the one corresponding to the bit bit.
  • a set of codewords is used for full power transmission.
  • the capability indication information may not use the bitmap method, that is, each status bit of the capability indication information corresponds to one or a specific set of codewords, and the terminal device can only select one from multiple status bits, that is, select the One or a group of specific code words corresponding to the status bits.
  • the capability indication information can be partly bitmap, that is, multiple codewords are grouped in advance, and bitmap is used to indicate between groups, that is, each bit or group of bits corresponds to a codeword group, when the one or one When the group bit position is 0, the corresponding codeword group is not indicated, otherwise, the corresponding codeword group is indicated; and the bitmap method may not be used in the group, that is, the different binary values of the bit or bits indicate Select some or all code words from the corresponding code word group.
  • the capability indication information further includes the number of SRS ports.
  • the capability indication information includes n bits corresponding to whether an additional SRS resource needs to be configured when the maximum rank value is n, and the additional configured SRS resource The number of SRS ports is less than the maximum number of SRS ports that the terminal device can support.
  • the capability indication information respectively indicates the number of SRS resources that need to be additionally configured, and each SRS resource may be one port, or the number of SRS ports that need to be additionally configured.
  • the additionally configured SRS resource can enable the terminal to perform port virtualization, that is, a virtual port formed by the virtualization of a transmission link or PA of an SRS port by multiple terminals.
  • the bit indication in the capability indication information corresponding to the first codeword group is 0, or the capability indication information indicates zero codewords in the first codeword group, indicating that the codewords in the first codeword group None can support full power transmission
  • At least one SRS resource needs to be additionally configured, and the number of SRS ports in the SRS resource is less than the maximum number of SRS ports that the terminal device can support.
  • a specific case is that an additional 1-port SRS resource needs to be configured.
  • the bit indication in the capability indication information corresponding to the fifth codeword group is 0, or the capability indication information indicates zero codewords in the fifth codeword group, indicating that the codewords in the fifth codeword group None can support full power transmission
  • At least one additional SRS resource needs to be configured, and the number of SRS ports in the SRS resource is less than the maximum number of SRS ports that the terminal device can support.
  • a specific case is that an additional 2-port SRS resource or two 1-ports are required. SRS resources.
  • the capability indication information indicates Can support full power transmission
  • you need to configure an additional 1-port SRS resource when the capability indication information indicates Can support full power transmission, there is no need to configure an additional 1 port SRS resource; or, when the capability indication information indicates Can support full power transmission, there is no need to configure an additional 1 port SRS resource, that is, the terminal does not need to configure multiple SRS resources of different ports; when the capability indication information indicates Can support full power transmission, you need to configure an additional 1-port SRS resource, that is, the terminal needs to configure multiple SRS resources of different ports, optionally, the multiple SRS resources of different ports are located in the same SRS resource set Within; or, when indicated in the capability indication message with None can support full power transmission, you need to configure an additional 1-port SRS resource, otherwise you do not need to configure an additional 1-port SRS resource, that is, the terminal does not need to configure multiple SRS resources of different ports.
  • the terminal determines the actual transmit power of the antenna port used to transmit the PUSCH according to the capability indication information reported by it, that is, the actual transmit power of the non-zero antenna port.
  • the base station can also use the terminal
  • the reported capability indication information determines the actual transmission power, thereby determining the MCS and TPMI of the PUSCH.
  • the PUSCH scheduled by the DCI adopts full power transmission, that is, the transmission power of the PUSCH is the channel transmission power.
  • the base station configures a codebook set and specifies that when some codewords are indicated by DCI, the PUSCH uses full power transmission, otherwise it uses non-full power transmission, that is, the PUSCH transmission power is the channel transmission power multiplied by the power reduction factor.
  • the specific determination method of the codeword set :
  • the codeword set includes:
  • PUSCH uses full power transmission; or, When the collection When instructed by DCI, PUSCH uses full power transmission, otherwise it uses non-full power transmission.
  • the codeword set includes:
  • PUSCH when Instructed by DCI, PUSCH uses full power transmission, otherwise uses non-full power transmission; or, the codeword set includes: or when Instructed by DCI, PUSCH uses full power transmission, otherwise it uses non-full power transmission;
  • the codeword set includes:
  • PUSCH when Instructed by DCI, PUSCH uses full power transmission, otherwise it uses non-full power transmission.
  • the codeword set includes:
  • the corresponding PUSCH uses full power transmission, otherwise, uses non-full power transmission.
  • the terminal reports part of the codewords in its first codeword group for full power transmission the terminal reports For full power transmission as an example, the codeword set includes:
  • the base station configures one or more SRS resources, and the number of antenna ports of the SRS resources is less than the maximum number of antenna ports supported by the terminal.
  • the base station may configure a SRS resource with 1 antenna port based on the capability indication information when the DCI indicates The SRS resource of this port indicates that the corresponding PUSCH is transmitted at full power, that is, the PUSCH uses the channel transmission power.
  • the base station may configure a SRS resource with 2 antenna ports based on the capability indication information Resource, the terminal sends the virtualized SRS port on the SRS resource of the 2 antenna port, when the DCI indicates the SRS resource of the 2 port and the TPMI indicates or , Indicates that the corresponding PUSCH is transmitted at full power, that is, PUSCH uses channel transmission power, and the number of PUSCH layers is 1, if the indicated TPMI is Then the PUSCH is transmitted at full power and the number of PUSCH layers is 2; or the base station can configure one or more SRS resources of one antenna port based on the capability indication information, and the terminal sends on the SRS resources of the one or more 1 antenna ports After the virtualized SRS port, when the SRS resource of the one or more 1 antenna ports is indicated in the DCI, it indicates that the corresponding PUSCH is transmitted
  • the base station can determine whether the above SRS resources and the number of SRS resources and the number of ports need to be configured, specifically: for terminal devices with a maximum of 4 antenna ports, when the report supports full power transmission capability, it does not support the use of any one
  • the first codeword group supports full power transmission, it indicates that the base station needs to configure an additional SRS resource of one port or two ports; or, when the terminal reports its support for a specific codeword in the first codeword group through capability indication information , Indicating that the base station needs to configure an additional SRS resource with 1 port or 2 ports.
  • the specific codeword can be or
  • the above reporting method may correspond to that the terminal device does not have a PA that supports the maximum transmission power.
  • the terminal can report through the capability indication information or and / or, or and / or, or At the same time, the information also indicates that the terminal does not need to configure multiple SRS resources of different ports.
  • the above reporting method may correspond to that the terminal device has at least one PA that supports the maximum transmission power.
  • the capability indication information also includes a single bit to indicate whether the terminal supports full power transmission.
  • the terminal reports that it supports full power transmission through this bit, it means that any codeword belonging to its coherent capability can be used to support full power transmission, and there is no need to configure SRS resources of different SRS ports.
  • the terminal reports through the capability indication information that it does not support any fifth codeword group to support the full power transmission mechanism, or when the terminal reports through the capability indication information that it supports a specific codeword in the fifth codeword group
  • the The specific codeword can be, or It indicates that an additional SRS resource of one or two ports needs to be configured, that is, at least two SRS resources need to be configured with different numbers of ports.
  • the terminal reports through the capability indication information that it supports one or more codewords in the fifth codeword group, it indicates that no additional SRS resources need to be configured, or the number of ports that do not need to configure at least two SRS resources is different; Or, when the terminal reports that it supports the fifth codeword group division or If there is one or more codewords, it means that there is no need to configure additional SRS resources, or it is not necessary to configure at least two SRS resources with different numbers of ports.
  • the above specific codeword is exemplary, and may also be or,
  • any codeword in the fifth codeword group in the capability indication information cannot support full power transmission, or only when a specific codeword in the fifth codeword group, such as or Supports full power transmission, indicating that the terminal cannot pass or with or Support full power. If all the codewords in the fifth codeword group supporting full power transmission in the capability indication information reported by the terminal correspond to less than 4, the number of nonzero ports indicates that the terminal can pass or or, or Support full power transmission. If all the codewords in the fifth codeword group supporting full power transmission in the capability indication information reported by the terminal correspond to 4, the number of non-zero ports indicates that the terminal can pass or And or Support full power transmission.
  • the number of bits of the capability indication information of the partially coherent capable terminal and the non-coherent capable terminal is the same; or, the codeword set corresponding to each bit in the capability indication information of the partially coherent capable terminal and the non-coherent capable terminal the same.
  • the base station configures multiple SRS resources with different numbers of ports in one SRS resource set, where the multiple SRS resources may include an SRS resource equal to the maximum number of antenna ports indicated by the terminal; The SRS resource with the maximum number of antenna ports, or multiple SRS resources smaller than the maximum number of antenna ports indicated by the terminal.
  • the codeword reported in the capability indication information when the codeword reported in the capability indication information is indicated, it indicates that the current PUSCH transmission uses full power transmission.
  • the power reduction factor is 1; and/or, the number of ports is less than the SRS resource with the maximum number of antenna ports When it is indicated, it indicates that the current PUSCH transmission uses full power transmission; and/or, when an SRS resource with a smaller number of ports among the multiple SRS resources of an SRS resource set is indicated, it indicates that the current PUSCH transmission uses full power For transmission, at this time, the power reduction factor is 1, or n/M.
  • the capability indication information is used to indicate the number of ports of the reference signal SRS that need to be additionally configured under a specific maximum transmission rank value.
  • the maximum rank refers to the maximum number of transmission layers or streams used in current data transmission. , That is, the maximum rank indicated in the DCI or the indicated number of DMRS ports or the number of columns in the indicated precoding matrix.
  • the maximum rank may be the value indicated by the terminal through a capability reporting information, or it may be the base station through high-level signaling The configured value.
  • the SRS (marked as the second SRS resource) that needs to be configured is not only the maximum number of antenna ports that the terminal can support (marked as the first SRS resource), but also the number of SRS ports that need to be configured.
  • the number of ports can be configured as the maximum number of ports in an SRS resource reported by the terminal, or the number of antennas configured by the terminal, or the maximum number of transmission layers supported by the terminal.
  • the second SRS resource may include one or more SRS resources. Specifically, for a 2Tx terminal, the number of ports that support the second SRS resource can be reported as 0 or 1, or whether the configuration of the second SRS resource can be supported, or whether the configuration of different SRS resource groups can be reported Port SRS resources, such as configuring a 1-port SRS resource and a 2-port SRS resource, or two 1-port SRS resources.
  • the number of ports supporting the second SRS resource may be reported as 1 and/or 2 and/or 3, that is, the value of the reported number of ports of the SRS resource is less than the maximum number of antenna ports that the terminal can support. For example, only reporting the number of ports supporting the second SRS resource is 1, indicating that for (maximum) PUSCH transmission with a rank of 1, SRS resources with different numbers of SRS ports need to be configured. For another example, reporting the number of ports supporting the second SRS resource is 1 and 2, indicating that for (maximum) PUSCH transmission with a rank of 1 or 2, SRS resources with different numbers of SRS ports need to be configured.
  • the number of ports that support the second SRS resource is reported as 2, indicating that for (maximum) rank
  • the capability indication information is used to indicate whether the configuration of multiple SRS resources with different numbers of ports is supported when the maximum transmission rank value is x, where the value of x is one of 1, 2, and 3.
  • the maximum transmission rank value is x, where the value of x is one of 1, 2, and 3.
  • the terminal device may report the number of SRS ports under the maximum rank combination.
  • the number of ports of the SRS is the number of ports in an SRS resource, or the number of ports in an SRS resource set, and the SRS resource set is used for uplink codebook transmission.
  • the SRS resource or SRS resource set is specifically used for the full power transmission mechanism, that is, the base station can simultaneously configure the number of ports of the SRS resource as the maximum number of ports that the terminal can support, and configure the number of ports of another SRS resource as the capability The number of SRS ports indicated by the indication information.
  • the SRS resource or SRS resource set may carry functional information configured by high-level signaling, indicating that it is used for a full power transmission mechanism, or the value of the power reduction factor corresponding to the SRS resource or SRS resource set is not the above value 3, or calculated The method is not the above calculation method 3.
  • the base station configures one or more SRS resources, and the number of antenna ports of the SRS resources is less than the maximum number of antenna ports supported by the terminal. For example, when a terminal device supporting 2 antenna ports reports through the capability indication information that it needs to additionally configure SRS resources with an antenna port number of 1, the base station may configure a SRS resource with 1 antenna port based on the capability indication information when the DCI indicates The SRS resource of this port indicates that the corresponding PUSCH is transmitted at full power, that is, the PUSCH uses the channel transmission power.
  • the base station may configure a SRS resource with 2 antenna ports based on the capability indication information Resource, the terminal sends the virtualized SRS port on the SRS resource of the 2 antenna port, when the DCI indicates the SRS resource of the 2 port and the TPMI indicates or , Indicates that the corresponding PUSCH is transmitted at full power and the number of transmission layers is 1, that is, the PUSCH uses the channel transmission power.
  • the terminal sends the virtualized SRS port on the SRS resource of the one or more 1 antenna ports.
  • the DCI indicates the SRS resource of the one or more 1 antenna ports, it indicates that the corresponding PUSCH is transmitted at full power.
  • the base station can determine whether the above SRS resources and the number of SRS resources and the number of ports need to be configured.
  • the base station may configure 2 based on the capability indication information 1 antenna port SRS resource, the terminal sends the virtualized SRS port on these 2 SRS resources.
  • the terminal sends the virtualized SRS port on these 2 SRS resources.
  • one of the two 1 antenna port SRS resources is indicated in the DCI, it indicates that the corresponding PUSCH is transmitted at full power and transmitted
  • the number of layers is 1, that is, PUSCH uses channel transmission power.
  • the two SRS resources are indicated in DCI at the same time, it indicates that the corresponding PUSCH is transmitted at full power and the transmission layer number is 2, that is, the PUSCH uses channel transmission power, and each port is divided equally The transmission power of the channel.
  • the capability indication information is used to indicate the value of the power reduction factor or the calculation method of the power reduction factor under a specific transmission rank rank value, as described in the above value 1-3 or calculation method 1-3 Narrate.
  • the terminal may determine the rank of the current data according to the rank indicated in the DCI or the indicated DMRS port number or the indicated number of columns in the precoding matrix.
  • the terminal device may report the value of the power reduction factor under the rank combination or the calculation method of the power reduction factor.
  • the value of the power reduction factor or the calculation method of the power reduction factor can only be adopted after the base station is enabled through high-layer signaling or DCI indication.
  • the first codeword is all codewords in the specific transmission rank rank.
  • the first codeword may be all codewords in coherent capabilities that the terminal can support.
  • the terminal may determine the rank of the current data according to the rank indicated in the DCI or the indicated DMRS port number or the indicated number of columns in the precoding matrix.
  • the first codeword may be all codewords of a coherent capability under the coherent capabilities supported by the terminal.
  • the terminal device may report whether the power reduction factor under the rank combination is equal to 1.
  • whether the power reduction factor is equal to 1 can only be adopted after the base station is enabled through high-layer signaling or DCI indication.
  • the terminal uses the capability indication information to separately report the value of the power reduction factor for different codeword types.
  • the terminal separately reports the power reduction factor corresponding to some coherent type codewords and the power reduction factor corresponding to non-coherent type codewords through the capability indication information.
  • the power reduction factor for reporting some coherent codewords is 1, while the power reduction factor for reporting non-coherent codewords is 1/N, or the power reduction factor for reporting some coherent codewords and non-coherent codewords is 1.
  • the value of the power reduction factor and one or more codewords are reported separately.
  • the power reduction factor is 1 and the codewords supporting full power transmission are simultaneously reported, and for rank equal to 2, the power reduction factor is directly reported as 1 or 1/N.
  • the agreement stipulates that when the power reduction factor is 1, the next specific codeword of the rank is predefined for full power transmission, for example, for a 2Tx terminal, or Used to support PUSCH full power transmission with rank 1, for 4Tx terminals, or Used to support PUSCH full power transmission with rank 1, or Used to support PUSCH full power transmission with rank 2, or Used to support PUSCH full power transmission with rank 3.
  • the number of SRS ports is reported separately for different codeword types, and the codeword type is a non-coherent codeword or a partially coherent codeword.
  • the number of SRS ports and one or more codewords are reported separately.
  • reporting does not support configuring SRS resource configurations for different ports (or reporting supports configuring an additional SRS resource with a small number of ports) and simultaneously reporting codewords that support full power transmission, or reporting supports configuring SRS for different ports Resource allocation.
  • the report does not support the configuration of SRS resource configuration of different ports, or the report supports the configuration of SRS resource configuration of different ports.
  • the codeword is used for full power transmission, such as for 2Tx terminals or Used to support PUSCH full power transmission with rank 1, for 4Tx terminals, or Used to support PUSCH full power transmission with rank 1, or Used to support PUSCH full power transmission with rank 2, or Used to support PUSCH full power transmission with rank 3.
  • the terminal can determine the channel transmission power.
  • the channel transmission power is the transmission power of n non-zero antenna ports, that is, the channel transmission power is actually the sum of the transmission power of n non-zero antenna ports.
  • the channel transmission power is less than or equal to P, where the value of P is the maximum transmission power, that is, the maximum transmission power of the uplink channel allocated by the terminal. The specific explanation of the channel transmission power here is as described above and will not be repeated here.
  • the n non-zero antenna ports correspond to n rows in the matrix one by one, and each row of the n rows includes one or more non-zero elements.
  • the terminal may also determine the transmission power of each non-zero antenna port according to the first codeword.
  • the terminal can evenly distribute the channel transmission power to n non-zero antenna ports, and the transmission power at the zero antenna port is correspondingly zero.
  • the average can be rounded or rounded up/down To distribute power.
  • the process of allocating power may be a certain process, that is, determining the transmission power of each non-zero antenna port. The determination may be to determine part of the antenna ports or all non-zero antenna ports.
  • the allocated power may be the final transmit power of the port directly, or it may be a power level or a power value to be transmitted, and a signal is sent according to the power level or the planned power value during transmission.
  • the network device determines that the power reduction factor of the first data is 1.
  • the network device sends downlink control information DCI to the terminal; wherein, the DCI is used to schedule the first data, and the codeword used in the first data is the first bit of the capability indication information.
  • the value is 1.
  • the network device may send downlink control information according to the first codeword.
  • the downlink control information may be used to indicate the uplink transmission codeword, for example, to indicate the TPMI index.
  • M is an integer power of 2
  • the relationship between the number of rows A in the matrix and the configured antenna port M can be: A ⁇ M.
  • the relationship between the number of non-zero antenna ports n and M is: n ⁇ M.
  • a terminal may use some or all of the M antenna ports to send uplink data.
  • the antenna port used to send uplink data is the above-mentioned non-zero antenna port.
  • the terminal After determining the transmission power of each non-zero antenna port, the terminal sends an uplink signal to the network device based on the determined transmission power on each antenna port.
  • the uplink signal in this application may also be called uplink data, or the uplink signal includes uplink Data, such as uplink signals, are carried on PUSCH.
  • the network device receives the uplink signal from the terminal.
  • the terminal may select codewords from different codebooks.
  • the terminal selects the first codeword from the existing TPMI codebook. For example, select from the codebooks shown in Tables 1 to 7 above. This can maintain the flexibility of the existing TPMI instructions.
  • the terminal according to the number of rows and columns of the matrix, the following several implementations will be described in detail.
  • the matrix is 2 rows and 1 column and is suitable for terminals with 2 or 4 antenna ports.
  • the first codeword can be determined from the first codebook. Specifically, an existing codeword is selected from the first codebook as the first codeword.
  • the codewords included in the first codebook must meet the following characteristics.
  • the first codebook includes a second codeword and/or a third codeword.
  • the number of non-zero antenna ports represented by the second codeword is 1, and the number of non-zero antenna ports represented by the third codeword is 2.
  • the first codebook is the codebook shown in Table 1.
  • the second codeword is a codeword with a TPMI index value of 0 or 1 in the codebook shown in Table 1.
  • the third codeword is the codeword in the TPMI index value of 2 to 5 in the codebook shown in Table 1.
  • the first codebook may include multiple second codewords and multiple third codewords.
  • the matrix is 4 rows and 1 column, which is suitable for terminals with 4 antenna ports.
  • the first codeword can be determined from the second codebook. Specifically, an existing codeword is selected from the second codebook as the first codeword.
  • the codewords contained in the second codebook must meet the following characteristics.
  • the second codebook includes a fourth codeword, a fifth codeword, and/or a sixth codeword.
  • the number of non-zero antenna ports represented by the fourth codeword is 1, the number of non-zero antenna ports represented by the fifth codeword is 2, and the number of non-zero antenna ports represented by the sixth codeword is 4.
  • the second codebook is the codebook shown in Table 3.
  • the fourth codeword is any codeword with a TPMI index value of 0 to 3 in the codebook shown in Table 3.
  • the fifth codeword is any codeword with a TPMI index value of 4 to 11 in the codebook shown in Table 3.
  • the sixth codeword is any codeword with a TPMI index value of 12 to 27 in the codebook shown in Table 3.
  • This application only describes the combination of the fourth codeword, the fifth codeword, and the sixth codeword included in the second codebook, and does not limit the number of codewords.
  • the second codebook may include multiple fourth codewords, multiple fifth codewords, and multiple sixth codewords.
  • the matrix is 4 rows and 2 columns, and is suitable for terminals with 4 antenna ports.
  • the first codeword can be determined from the third codebook. Specifically, an existing codeword is selected from the third codebook as the first codeword.
  • the codewords included in the third codebook must meet the following characteristics.
  • the third codebook includes a seventh codeword, an eighth codeword, and/or a ninth codeword.
  • the number of non-zero antenna ports characterized by the seventh codeword is 2, the number of non-zero antenna ports characterized by the eighth codeword is 4, and the number of non-zero elements of the eighth codeword is 4.
  • the number of non-zero antenna ports characterized by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is greater than 4 (for example, 8).
  • the third codebook is the codebook shown in Table 5.
  • the seventh codeword is any codeword with a TPMI index value of 0 to 5 in the codebook shown in Table 5.
  • the eighth codeword is any codeword with a TPMI index value of 6 to 13 in the codebook shown in Table 5.
  • the ninth codeword is any codeword with a TPMI index value of 14 to 21 in the codebook shown in Table 5.
  • This application only describes the combination of the seventh codeword, the eighth codeword, and the ninth codeword included in the third codebook, and does not limit the number of codewords.
  • the third codebook may include multiple seventh codewords, multiple eighth codewords, and multiple ninth codewords.
  • the matrix is 4 rows and 3 columns, and is suitable for terminals with 4 antenna ports.
  • the first codeword can be determined from the fourth codebook. Specifically, an existing codeword is selected from the fourth codebook as the first codeword.
  • the codewords included in the fourth codebook must meet the following characteristics.
  • the fourth codebook includes the tenth codeword and/or the eleventh codeword.
  • the number of non-zero antenna ports characterized by the tenth codeword is 3, the number of non-zero antenna ports characterized by the eleventh codeword is 4 and the number of non-zero elements of the eleventh codeword is 4.
  • the number of non-zero antenna ports characterized by the eleventh codeword is 4 and the number of non-zero elements of the eleventh codeword is greater than 4 (for example, 8).
  • the fourth codebook is the codebook shown in Table 6.
  • the tenth codeword is a codeword with a TPMI index value of 0 in the codebook shown in Table 6.
  • the eleventh codeword is any codeword with a TPMI index value of 1 to 6 in the codebook shown in Table 6.
  • This application only describes the combination of the tenth codeword and the eleventh codeword included in the fourth codebook, and does not limit the number of codewords.
  • the fourth codebook may include multiple tenth codewords and multiple eleventh codewords.
  • the matrix is 2 rows and 2 columns, and is suitable for terminals with 4 antenna ports.
  • the first codeword can be determined from the fifth codebook. Specifically, an existing codeword is selected from the fifth codebook as the first codeword.
  • the codewords included in the fifth codebook must meet the following characteristics.
  • the fifth codebook includes the twelfth codeword and/or the thirteenth codeword.
  • the number of non-zero antenna ports characterized by the twelfth codeword is two and the number of non-zero elements of the twelfth codeword is two.
  • the number of non-zero antenna ports characterized by the thirteenth codeword is 2 and the number of non-zero elements of the thirteenth codeword is greater than 2 (for example, 4).
  • the fifth codebook is the codebook shown in Table 2.
  • the twelfth codeword is a codeword with a TPMI index value of 0 in the codebook shown in Table 2.
  • the thirteenth codeword is any codeword with a TPMI index value of 1 to 2 in the codebook shown in Table 2. This application only describes the combination of the twelfth codeword and the thirteenth code character included in the fifth codebook, and does not limit the number of codewords.
  • the fifth codebook may include multiple twelfth codewords and multiple thirteenth codewords.
  • the terminal also needs to send reference signals of (M/2) antenna ports to the network device , (M/2) is 2.
  • the network device determines the downlink control information according to the reference signals of (M/2) antenna ports.
  • the reference signal resources of (M/2) antenna ports are defined in the protocol as channel measurements for implementing the set power control mode.
  • the set power control mode is a full power transmission mechanism. In the set power control mode, the value of the channel transmission power is less than or equal to P.
  • the network device may determine the downlink control mode according to the reference signals of (M/2) antenna ports, that is, determine the TPMI indication and MCS measurement.
  • the first codeword may be added to the corresponding codebook, for example, the first codebook to the fifth codebook.
  • a codeword entry can be added on the basis of the original codebook to increase the first codeword, and correspondingly, a state value of the first codeword can be added to the DCI.
  • the codeword of the specified index in the original codebook may be set as the first codeword, and the original codeword of the specified index may be removed.
  • the status value of the codeword indicating the specified index in DCI is used to indicate the first codeword.
  • the network device When the downlink control information sent by the network device to the terminal is used to indicate the first codeword, it means that the network device enables the full power transmission mechanism, and the terminal can allocate the channel transmit power to the first codeword according to the first codeword. On each non-zero antenna port.
  • the network device may also indicate codewords other than the first codeword in the codebook. The terminal may not reduce the channel transmission power, and allocate the channel transmission power to each non-zero antenna port according to the indicated codeword.
  • the number of antenna ports of the terminal is represented by M
  • the number of data layers for uplink transmission is represented by N or P
  • P N.
  • the codeword indicated by the capability indication information may be a matrix, and the number of rows and columns of the matrix is related to the number of antenna ports and data layers of the terminal.
  • the size of the matrix may be M*N, denoted as the first matrix; the size of the matrix may also be (M/2)*P, denoted as the second matrix.
  • the M rows in the first matrix correspond one-to-one to the M antenna ports
  • the N columns in the first matrix correspond one-to-one to the N data layers for uplink data transmission.
  • One row in the (M/2) row of the second matrix corresponds to one antenna port or two antenna ports
  • column P in the second matrix corresponds one-to-one to the P data layers for uplink data transmission.
  • the first matrix and the second matrix may be determined from the codebook described above.
  • the codebook includes multiple codewords, and the codewords are used to indicate the precoding modes of each transmission port.
  • a codeword is selected from the codebook as the function parameter of the terminal.
  • the capability indication information sent by the terminal may be a TPMI index value, or a codeword may be directly used as the capability indication information.
  • the terminal Before uplink transmission, the terminal sends the capability information of the terminal to the network device, and one of the capability information is the capability indication information sent by the terminal.
  • Option 1 Add a codeword entry to the existing codebook. For example, add a TPMI index value 6 to Table 1.
  • the TPMI index value 6 corresponds to the newly added codeword entry.
  • the network device will add a status value to the DCI corresponding to the newly added codeword entry.
  • the network device indicates this status value to the DCI delivered by the terminal, it indicates that the network device enables the full power transmission mechanism.
  • the terminal confirms to use the full power transmission mechanism according to the status value indicated by the DCI.
  • the terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna port indicated by the non-zero element in the first matrix or the second matrix.
  • the method of adding codewords in the existing codebook can not change the flexibility of the existing TPMI indication.
  • Option 2 Replace a codeword in the existing codebook with the codeword indicated by the capability indication information.
  • the codeword with the lowest TPMI index value is fixedly replaced with the codeword indicated by the capability indication information.
  • the codeword corresponding to TPMI0 in Table 1 is replaced with the codeword indicated by the capability indication information.
  • the network device still uses the status value of TPMI0 in the original codebook to indicate the codeword indicated by the capability indication information.
  • the network device indicates this status value to the DCI delivered by the terminal, it indicates that the network device enables the full power transmission mechanism.
  • the terminal confirms to use the full power transmission mechanism according to the status value indicated by the DCI.
  • the terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna port indicated by the non-zero element in the first matrix or the second matrix. The second way can not increase the DCI signaling overhead.
  • Option 3 Do not change the existing codebook structure, and directly define the power control mechanism as: when DCI indicates the status value corresponding to a specified codeword (for example, the codeword with the lowest TPMI index value), it indicates that the network device is enabled Full power transmission mechanism. After receiving the DCI, the terminal confirms to use the full power transmission mechanism according to the status value indicated by the DCI. The terminal does not perform power reduction, but directly allocates the confirmed channel transmission power to the antenna port indicated by the non-zero element in the first matrix or the second matrix. When DCI indicates a status value other than the status value corresponding to the specified codeword, it indicates that the network device does not enable the full power transmission mechanism.
  • a specified codeword for example, the codeword with the lowest TPMI index value
  • the channel transmission power is reduced (multiplied by the power reduction factor) and then allocated to the antenna port indicated by the non-zero element.
  • the codeword or TPMI index value reported by the terminal only represents the implementation behavior of the terminal supporting full power.
  • the terminal allocates the channel transmission power to the antenna port indicated by the non-zero element in the first matrix, and determines that the transmission power at the antenna port indicated by the 0 element in the first matrix is zero. Wherein, if the first matrix includes multiple non-zero elements, the terminal may divide the channel transmission power equally to the antenna port indicated by the non-zero elements in the first matrix.
  • the number of uplink transmission layers of the terminal may be one or more layers, and the number N of columns in the first matrix may be 1 or an integer greater than 1.
  • the terminal allocates the channel transmit power to the antenna port corresponding to the non-zero element.
  • Uplink data is sent on the antenna port corresponding to the element; if multiple non-zero elements (that is, non-zero row elements) are included in a column, the terminal divides the channel transmission power equally to the antenna ports corresponding to the multiple non-zero elements, and adopts the multiple Multiple antenna ports corresponding to non-zero elements are virtualized to send uplink data.
  • N is greater than 1, then: if any non-zero element is included in any of the N columns, the terminal divides the channel transmit power equally to the N antenna ports corresponding to the N non-zero elements, and adopts it on a data layer 1/N times the channel transmission power, sending upstream data; if any one of the N columns always includes multiple non-zero elements, then on each data layer, 1/N times the channel transmission power is divided equally For multiple non-zero elements, multiple antenna ports corresponding to the multiple non-zero elements are used to virtualize and transmit uplink data.
  • the antenna port of the terminal has the maximum transmission power according to the capability of the PA, and the terminal may not support the channel transmission power for the maximum transmission power of each antenna port.
  • the terminal may use multiple antenna port virtualization to achieve the channel transmission power.
  • the power level of the terminal in Table 8 is 23 dBm.
  • the power level of the terminal is adjusted to 26 dBm.
  • the channel transmission power of the terminal is determined to be P, optionally, P is 23 dBm or adjusted 26 dBm.
  • P is 23 dBm or adjusted 26 dBm.
  • the case of not considering the tolerance value is taken as an example.
  • the following is an example of the antenna configuration when the number of antenna ports of the terminal is 2 and 4. When the terminal supports 2 antenna ports, the 2 antenna ports are represented by port 0 and port 1, respectively, and when the terminal supports 4 antenna ports, the 4 antenna ports are represented by port 0, port 1, port 2, and port 3, respectively.
  • the port supports maximum transmit power including 17dBm, 20dBm or 23dBm.
  • the port that supports the maximum transmission power of 17dBm can transmit P/4; the port that supports the maximum transmission power of 20dBm can transmit P/2; the port that supports the maximum transmission power of 23dBm can transmit P.
  • Figures 3 to 5 show the antenna forms that can be supported by terminals with two antenna ports.
  • Port 0 and Port 1 support a maximum transmit power of 20 dBm. If the terminal wants to indicate the full power transmission mechanism, it can achieve the channel transmission power (23dBm) transmission by virtualizing the two antenna ports into one antenna port, that is, using two PAs to transmit simultaneously for power combining to achieve 23dBm transmission.
  • Port 0 and Port 1 support a maximum transmit power of 23dBm. If the terminal wants to indicate the full power transmission mechanism, it can transmit to the channel transmission power (23dBm) through any antenna port.
  • port 0 supports a maximum transmit power of 20 dBm
  • port 1 supports a maximum transmit power of 23 dBm. If the terminal wants to indicate the full power transmission mechanism, it can use port 1 to reach the channel transmission power (23dBm) transmission. It is also possible to achieve channel transmission power (23dBm) transmission by virtualizing two antenna ports into one antenna port, that is, using two PAs to transmit simultaneously for power combining to achieve 23dBm transmission. For example, port 0 uses P/2 transmit power, and port 1 uses P/2 transmit power.
  • FIGS 6 to 11 show the form of antennas that can ultimately be supported by the four antenna ports.
  • port 0 supports a maximum transmit power of 23 dBm
  • port 1, port 2 and port 3 support a maximum transmit power of 17 dBm.
  • the terminal can use port 0 to reach the channel transmit power (23dBm) transmission.
  • Port 0 and Port 2 support a maximum transmit power of 20 dBm.
  • Port 1 and port 3 respectively support a maximum transmit power of 17dBm.
  • Port 0, Port 1, Port 2 and Port 3 respectively support a maximum transmit power of 17 dBm.
  • port 0, port 1, port 2 and port 3 support a maximum transmit power of 20 dBm.
  • Port 0, Port 1, Port 2 and Port 3 support a maximum transmit power of 23 dBm.
  • Port 0 and Port 3 support a maximum transmit power of 23dBm.
  • Port 1 and port 3 respectively support a maximum transmit power of 17dBm.
  • the capability indication information that can be reported is selected as follows.
  • the codebook of a terminal with one antenna port transmission layer number 1 is shown in Table 1.
  • the terminal can select any one of the TPMI index values in Table 1 from 0 to 1, and any one of the TPMI index values from 2 to 5. , As the capability indication information.
  • the terminal can select TPMI0 in Table 1: Or TPMI2: As capability indication information, you can also directly report the codeword or As a capability indicator.
  • the terminal in the antenna form shown in FIG. 4 can select TPMI0 or TPMI2 in Table 1 as the capability indication information, or report the codeword or As capability indication information, a terminal indicating the antenna form shown in FIG. 4 may use one antenna port to transmit channel transmission power.
  • the terminal in the antenna form shown in FIG. 5 can select TPMI1 in Table 1 as the capability indication information, or report As the capability indication information, a terminal indicating the antenna form shown in FIG. 5 may use one antenna port to transmit channel transmission power. In both cases, the terminal allocates the channel transmission power P to an antenna port indicated by element 1, and sends data to the network device. After receiving the codeword, the network device can estimate the MCS through the channel on an SRS port, and can select the TPMI in the downlink capability indication information based on an antenna port.
  • Terminals in the antenna form shown in FIG. 3, FIG. 4 and FIG. 5 can select any one of the TPMI index values in Table 1 as 2 to 5 as the capability indication information.
  • TPMI2 is selected as the capability indication information.
  • the network device determines the MCS through channel estimation on the two SRS ports.
  • the codebook of a terminal with 4 antenna port transmission layers of one layer is shown in Table 3 or Table 4.
  • the terminal may select any one of TPMI index values in Table 3 from 0 to 3, any one of TPMI index values from 4 to 11, and any one of TPMI index values from 12 to 27.
  • the number of corresponding non-zero antenna ports is 1, 2, and 4, respectively.
  • the terminal can select TPMI0 in Table 3: TPMI4: And TPMI13: As a capability indicator. Equivalent, can also report codewords or or As a capability indicator. The two reporting methods have different normalization factors or ranges.
  • Terminals of the antenna form shown in FIG. 6, FIG. 10 and FIG. 11 can select any one of TPMI index values of 0 to 3 in Table 3 as the capability indication information.
  • TPMI0 is selected as the capability indication information.
  • the terminal allocates the channel transmission power P to an antenna port indicated by element 1, and sends data to the network device.
  • the network device After receiving the codeword, the network device can estimate the MCS through the channel on an SRS port, and can select the TPMI in the downlink capability indication information based on an antenna port.
  • Terminals in the antenna form shown in FIG. 7, FIG. 9, FIG. 10, and FIG. 11 can select any one of the TPMI index values in Table 3 as 4 to 11 as the capability indication information.
  • TPMI4 is selected as the capability indication information.
  • the network device determines the MCS through channel estimation on the two SRS ports.
  • Terminals in the antenna form shown in FIGS. 6 to 11 can select any one of the TPMI index values in Table 3 as 12 to 27 as capability indication information.
  • TPMI13 is selected as the capability indication information. It means that the terminal achieves channel transmission power by virtualizing 4 antenna ports into one antenna port. In this case, the terminal divides the channel power P equally into 4 antenna ports, and one antenna port carries the transmission power of P/4.
  • the network device After receiving the codeword, the network device determines the MCS through channel estimation on the four SRS ports.
  • the codebook of a terminal with 4 antenna port transmission layers of 2 layers is shown in Table 5.
  • the terminal may select any one of the TPMI index values in Table 5 from 0 to 5, and any one of the TPMI index values from 6 to 21.
  • the number of non-zero antenna ports corresponds to 2 and 4, respectively.
  • the terminal can select TPMI1 in Table 5: And TPMI6: As a capability indicator.
  • TPMI1 can also report codewords As a capability indicator.
  • the two reporting methods have different normalization factors or ranges.
  • the terminals in the antenna form shown in FIG. 7, FIG. 9, FIG. 10, and FIG. 11 can select any one of the TPMI index values in Table 5 from 0 to 5 as the capability indication information.
  • TPMI1 is selected as the capability indication information. It means that the terminal can use one antenna port to transmit the channel transmit power on each data layer in layer 2, then the terminal divides the channel transmit power P equally between the two antenna ports indicated by element 1, and one antenna port carries P/2 To send data to network devices. After receiving the codeword, the network device determines the MCS through channel estimation on the two SRS ports.
  • the terminals in the antenna form shown in FIGS. 6 to 11 can select any one of the TPMI index values in Table 3 as 6 to 21 as the capability indication information.
  • TPMI6 is selected as the capability indication information. It means that the terminal achieves channel transmission power by virtualizing 4 antenna ports into one antenna port. In this case, the terminal divides the channel power P equally between the two data layers, one data layer bears the power of P/2, and on each data layer, the power of P/2 is allocated to the two antenna ports, one antenna The port carries P/4 transmit power. After receiving the codeword, the network device determines the MCS through channel estimation on the four SRS ports.
  • the terminal in the antenna form shown in FIG. 6 to FIG. 11 may also report that it does not support the full power transmission mechanism in which the data layer is layer 2.
  • the data layer is a 2-layer transmission
  • precoding is used to avoid inter-layer interference, but the phase weighting between non-coherent antennas is not accurate, so the most preferred method is to only expect the terminal to report a TPMI index value of 0 to 5.
  • the terminal reports that the terminal does not support the full power mechanism where the data layer is layer 2.
  • the codebook of a terminal with a transmission layer number of 4 antenna ports of 3 layers is shown in Table 6.
  • the terminal may select any one of TPMI index value 0 in Table 6 and TPMI index value 1 to 6.
  • the number of non-zero antenna ports corresponds to 3 and 4, respectively.
  • the terminal can select TPMI0 in Table 6: And TPMI1: As a capability indicator.
  • TPMI0 As a capability indicator.
  • the equivalent of reporting TPMI0 can also report codewords: As a capability indicator.
  • the two reporting methods have different normalization factors or ranges.
  • Both the terminals of the antenna form shown in FIG. 9 and FIG. 10 can select the code word with the TPMI index value of 0 in Table 6 as the capability indication information. It means that the terminal can use one antenna port to send the channel transmit power on each data layer of the 3 layers, then the terminal equally divides the channel transmit power P to the 3 antenna ports indicated by element 1, and one antenna port carries P/3 To send data to network devices. After receiving the codeword, the network device determines the MCS through channel estimation on the three SRS ports.
  • Terminals in the antenna form shown in FIG. 6, FIG. 7, FIG. 8 and FIG. 11 can select any one of the TPMI index values in Table 6 from 1 to 6 as capability indication information.
  • TPMI1 is selected as the capability indication information.
  • the terminal divides the channel power P equally among the three data layers. One data layer bears the power of P/3. On each data layer, the terminal divides the power of P/3 among the ports indicated by non-zero elements. Non-zero elements, multiple ports with non-zero elements are virtualized into a port to transmit P/3 power.
  • the network device determines the MCS through channel estimation on the four SRS ports.
  • Terminals in the antenna form shown in FIG. 6, FIG. 7, FIG. 8 and FIG. 11 may also report that they do not support the full-power transmission mechanism in which the data layer is Layer 3.
  • the precoding method is used to avoid inter-layer interference, but the phase weighting between non-coherent antennas is not accurate, so the most preferred method is to only expect the terminal to report a code with a TPMI index value of 0. In other words, the terminal reports that the full power mechanism with a data layer of layer 3 is not supported.
  • the terminal with 4 antenna ports may also use the capability information reported by the above 2 antenna ports.
  • the terminal may select any one of the TPMI index value in Table 1 from 0 to 1, and any one of the TPMI index value from 2 to 5, as the capability indication information.
  • the terminal can select TPMI0 in Table 1:
  • TPMI2 As capability indication information, you can also directly report the codeword or As a capability indicator.
  • Terminals in the antenna form shown in FIG. 6, FIG. 7, FIG. 9, FIG. 10, and FIG. 11 may select any one of the TPMI index values in Table 1 from 0 to 1 as the capability indication information.
  • the network device determines that the terminal uses one antenna port or two antenna ports virtualized as one antenna port to transmit the channel transmission power.
  • the network device instructs the terminal to send a 2-port SRS, where the 2-port SRS needs to be determined based on the codeword indicated by the capability indication information reported by the terminal
  • the protocol will describe that the 2-port SRS resource is used for the channel measurement of the full power transmission mechanism.
  • a specific example of a method for a terminal to send a 2-port SRS is as follows: For example, if the terminal in the antenna form shown in FIG. 6 reports TPMI0 in Table 1, port 0 in the 2-port SRS is sent with a 23 dBm PA, and port 1 uses any one 17dBm PA transmission, the network device determines whether to use port 0 to transmit uplink data based on the 2-port SRS measurement; for example, if the terminal in the antenna form shown in FIG. 7 reports TPMI 0, then port 2 of the 2-port SRS uses two A 20dBm PA is sent after port virtualization, and port 1 is sent with any 17dBm PA.
  • the network device determines whether to use port 0 to transmit uplink data based on the 2-port SRS measurement; another example is the terminal in the form of an antenna shown in Figure 7 If TPMI 2 is reported, port 0 and port 1 of the two-port SRS are sent with two 20 dBm PAs respectively, and port 1 is sent with any 17 dBm PA. The network device determines whether to use port 0 for transmission based on the 2-port SRS measurement Upstream data.
  • any one of the TPMI index values in Table 1 can be selected as the capability indication information.
  • the terminal can further hide the implementation of the terminal's antenna form.
  • the network device can finally determine the TPMI and MCS of the uplink transmission more accurately.
  • an embodiment of the present application further provides a communication device 1200, which is used to perform the operation performed by the terminal in the above communication method, or to perform the above communication method Operations performed by network devices.
  • the communication device 1200 includes a processing unit 1201 and a communication unit 1202. Wherein, when the communication device 1200 is used to perform the operation performed by the terminal in the above communication method:
  • the communication unit 1202 is configured to send capability indication information, and the capability indication information is used to indicate that the first codeword is expressed as a matrix of A*N, where A and N are positive integers;
  • the processing unit 1201 is configured to determine a channel transmission power, where the channel transmission power is the transmission power of n non-zero antenna ports;
  • the processing unit 1201 is further configured to determine the transmission power of each of the non-zero antenna ports according to the first codeword, where the n non-zero antenna ports correspond one-to-one to n rows in the matrix In each of the n rows, one or more non-zero elements are included, and the transmission power of the channel is less than or equal to P, where the value of P is the maximum transmission power.
  • a ⁇ M and n ⁇ M where M is the number of configured antenna ports, and M is an integer power of 2.
  • the processing unit 1201 is further configured to: determine the first codeword from the first codebook;
  • the first codebook includes a second codeword and/or a third codeword
  • the number of non-zero antenna ports represented by the second codeword is 1
  • the number of non-zero antenna ports represented by the third codeword is 2.
  • the processing unit 1201 is further configured to: determine the first codeword from the second codebook;
  • the second codebook includes a fourth codeword, a fifth codeword and/or a sixth codeword, the number of non-zero antenna ports represented by the fourth codeword is 1, and the non-zero antenna port represented by the fifth codeword The number of zero antenna ports is 2, and the number of non-zero antenna ports represented by the sixth codeword is 4.
  • the processing unit 1201 is further configured to: determine the first codeword from the third codebook;
  • the third codebook includes a seventh codeword, an eighth codeword, and/or a ninth codeword, and the number of non-zero antenna ports represented by the seventh codeword is 2; the non-zero antenna port represented by the eighth codeword The number of zero antenna ports is 4 and the number of non-zero elements of the eighth codeword is 4, or the number of non-zero antenna ports characterized by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is The number is greater than 4.
  • the processing unit 1201 is further configured to: determine the first codeword from the fourth codebook;
  • the fourth codebook includes a tenth codeword and/or an eleventh codeword, and the number of non-zero antenna ports represented by the tenth codeword is 3; the non-zero antenna ports represented by the eleventh codeword The number of is 4 and the number of non-zero elements of the eleventh codeword is 4, or the number of non-zero antenna ports represented by the eleventh codeword is four and the number of non-zero elements of the eleventh codeword is The number is greater than 4.
  • the processing unit 1201 is further configured to: determine the first codeword from the fifth codebook;
  • the fifth codebook includes a twelfth codeword and/or a thirteenth codeword, the number of non-zero antenna ports represented by the twelfth codeword is 2, and the non-zero elements of the twelfth codeword The number of is 2; the number of non-zero antenna ports represented by the thirteenth codeword is two and the number of non-zero elements of the twelfth codeword is greater than two.
  • the communication unit 1202 is also used to:
  • the reference signal is used in the set power control mode, and the value of the channel transmission power in the set power control mode is less than or equal to P.
  • the communication unit 1202 is also used to receive control information, and the control information is used to indicate the first codeword.
  • the uplink signal is carried on the physical uplink shared channel PUSCH.
  • the processing unit 1201 controls the communication unit 1202 to perform the following steps:
  • Receiving capability indication information which is used to indicate that the first codeword is expressed as a matrix of A*N, where A and N are positive integers;
  • downlink control information is sent.
  • the communication unit 1202 is also used to receive reference signals of (M/2) antenna ports, and the processing unit 1201 is also used to determine the downlink control information according to the reference signals of the (M/2) antenna ports.
  • the reference signal is used to set the power control mode, and the value of the uplink channel transmission power in the set power control mode is less than or equal to P, where P is the maximum uplink transmission power.
  • the communication unit 1202 is also used to send control information, where the control information is used to indicate the first codeword.
  • an embodiment of the present application further provides a communication device 1300, which is used to perform the operation performed by the network device in the above method embodiment or to perform the above method The operation performed by the terminal in the embodiment.
  • the communication device 1300 includes a transceiver 1301, a processor 1302, and a memory 1303.
  • the memory 1303 is optional.
  • the memory 1303 is used to store the program executed by the processor 1302.
  • the processor 1302 is used to call a set of programs.
  • the processor 1302 is caused to perform the operations performed by the terminal in the above method embodiments.
  • the processor 1302 is configured to send capability indication information, where the capability indication information is used to indicate that the first codeword is expressed as a matrix of A*N, where A and N are positive integers;
  • the processor 1302 is further configured to determine a channel transmission power, where the channel transmission power is the transmission power of n non-zero antenna ports;
  • the processor 1302 is further configured to determine the transmission power of each of the non-zero antenna ports according to the first codeword, where the n non-zero antenna ports correspond one-to-one to n rows in the matrix In each of the n rows, one or more non-zero elements are included, and the transmission power of the channel is less than or equal to P, where the value of P is the maximum transmission power.
  • a ⁇ M and n ⁇ M where M is the number of configured antenna ports, and M is an integer power of 2.
  • the processor 1302 is further configured to: determine the first codeword from the first codebook;
  • the first codebook includes a second codeword and/or a third codeword
  • the number of non-zero antenna ports represented by the second codeword is 1
  • the number of non-zero antenna ports represented by the third codeword is 2.
  • the processor 1302 is further configured to: determine the first codeword from the second codebook;
  • the second codebook includes a fourth codeword, a fifth codeword and/or a sixth codeword, the number of non-zero antenna ports represented by the fourth codeword is 1, and the non-zero antenna port represented by the fifth codeword The number of zero antenna ports is 2, and the number of non-zero antenna ports represented by the sixth codeword is 4.
  • the processor 1302 is further configured to: determine the first codeword from the third codebook;
  • the third codebook includes a seventh codeword, an eighth codeword, and/or a ninth codeword, and the number of non-zero antenna ports represented by the seventh codeword is 2; the non-zero antenna port represented by the eighth codeword The number of zero antenna ports is 4 and the number of non-zero elements of the eighth codeword is 4, or the number of non-zero antenna ports characterized by the ninth codeword is 4 and the number of non-zero elements of the ninth codeword is The number is greater than 4.
  • the processor 1302 is further configured to: determine the first codeword from the fourth codebook;
  • the fourth codebook includes a tenth codeword and/or an eleventh codeword, and the number of non-zero antenna ports represented by the tenth codeword is 3; the non-zero antenna ports represented by the eleventh codeword The number of is 4 and the number of non-zero elements of the eleventh codeword is 4, or the number of non-zero antenna ports represented by the eleventh codeword is four and the number of non-zero elements of the eleventh codeword is The number is greater than 4.
  • the processor 1302 is further configured to: determine the first codeword from the fifth codebook;
  • the fifth codebook includes a twelfth codeword and/or a thirteenth codeword, the number of non-zero antenna ports represented by the twelfth codeword is 2, and the non-zero elements of the twelfth codeword The number of is 2; the number of non-zero antenna ports represented by the thirteenth codeword is two and the number of non-zero elements of the twelfth codeword is greater than two.
  • the transceiver 1301 is also used for:
  • the reference signal is used in the set power control mode, and the value of the channel transmission power in the set power control mode is less than or equal to P.
  • the transceiver 1301 is further configured to receive control information, and the control information is used to indicate the first codeword.
  • the uplink signal is carried on the physical uplink shared channel PUSCH.
  • the processor 1302 is used to call a set of programs.
  • the processor 1302 is caused to perform the operations performed by the network device in the above method embodiment. operating. Specifically, the processor 1302 controls the transceiver 1301 to execute:
  • Receiving capability indication information which is used to indicate that the first codeword is expressed as a matrix of A*N, where A and N are positive integers;
  • downlink control information is sent.
  • the transceiver 1301 is also used to receive reference signals of (M/2) antenna ports, and the processing unit 1201 is also used to determine the downlink control information according to the reference signals of the (M/2) antenna ports.
  • the reference signal is used to set the power control mode, and the value of the uplink channel transmission power in the set power control mode is less than or equal to P, where P is the maximum uplink transmission power.
  • the transceiver 1301 is also used to send control information, and the control information is used to indicate the first codeword.
  • the functional module communication unit 1202 in FIG. 12 may be implemented by the transceiver 1301, and the processing unit 1201 may be implemented by the processor 1302.
  • the processor 1302 may be a central processing unit (CPU), a network processor (NP), or a combination of CPU and NP.
  • CPU central processing unit
  • NP network processor
  • the processor 1302 may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof.
  • the PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field programmable logic gate array (field-programmable gate array, FPGA), a general array logic (generic array logic, GAL), or any combination thereof.
  • the memory 1303 may include volatile memory (volatile memory), such as random-access memory (RAM); the memory 1303 may also include non-volatile memory (non-volatile memory), such as flash memory (flash) memory), hard disk drive (HDD) or solid-state drive (SSD); the memory 1303 may also include a combination of the aforementioned types of memory.
  • volatile memory volatile memory
  • non-volatile memory non-volatile memory
  • flash flash memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the memory 1303 may also include a combination of the aforementioned types of memory.
  • part or all of the operations and functions performed by the described network device and terminal may be implemented by a chip or an integrated circuit.
  • an embodiment of the present application further provides a chip, including a processor, for supporting the communication device 1200 and the communication device 1300 to implement the terminal in the method provided in the above embodiment And network equipment.
  • the chip is connected to a memory or the chip includes a memory for storing necessary program instructions and data of the device.
  • An embodiment of the present application provides a computer storage medium that stores a computer program, and the computer program includes instructions for executing the communication method provided by the foregoing embodiment.
  • An embodiment of the present application provides a computer program product containing instructions, which when run on a computer, causes the computer to execute the communication method provided by the foregoing embodiment.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Moreover, the present application may take the form of a computer program product implemented on one or more computer usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code.
  • computer usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • These computer program instructions may also be stored in a computer readable memory that can guide a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, the instructions
  • the device implements the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.
  • These computer program instructions can also be loaded onto a computer or other programmable data processing device, so that a series of operating steps are performed on the computer or other programmable device to generate computer-implemented processing, which is executed on the computer or other programmable device
  • the instructions provide steps for implementing the functions specified in one block or multiple blocks of the flowchart one flow or multiple flows and/or block diagrams.

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Abstract

本申请提供一种通信方法及装置，用以提高上行传输的性能。该方法为终端确定并发送能力指示信息，能力指示信息用于确定功率缩减因子，功率缩减因子为n个非零天线端口的实际发送功率总和与信道发送功率的比值，信道发送功率的最大取值为系统额定的最大发送功率；能力指示信息用于指示至少一个码字；和/或，能力指示信息用于指示在最大传输秩取值为x时，额外配置的SRS的端口数，额外配置的SRS的端口数不同于最大天线端口数；和/或，能力指示信息用于指示在最大传输秩取值为x时，是否支持配置多个不同端口数的SRS资源；和/或，能力指示信息用于指示在传输秩取值为x时，功率缩减因子的取值，x的取值为{1，2，3}中至少一个。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2019年01月11日提交中国专利局、申请号为201910028848.8、申请名称为“一种通信方法及装置”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；本申请要求在2019年04月30日提交中国专利局、申请号为201910365518.8、申请名称为“一种通信方法及装置”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
本申请实施例涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
在无线通信系统中，终端在发送上行信号时，在基带生成基带信号，基带信号经过射频发射链路生成射频信号，射频信号经过天线发送，射频链路包括射频集成电路、功率放大器(power amplification，PA)、双工器/滤波器。终端在上行传输之前会上报该终端的天线能力，该天线能力包括天线端口数量、层数或天线数量等参数。终端在支持多个天线端口时，发送天线、天线端口和PA一一对应，不同的PA可能对应不同的最大发送功率。进一步的，终端在上行传输之前还会上报各个发送天线间的最大相干能力。相干能力从大到小依次包括完全相干能力、部分相干能力和非相干能力。两个发送天线。完全相干能力表明终端的全部发送天线完成相位校准，可以进行相位加权，即终端所有的天线均可以发送同一个数据层。非相干能力表明终端的任意两个发送天线之间均未完成相位校准，均不可以进行相位加权发送相同的数据层。部分想干能力介于两种能力之间。层数是指数据层的层数，也可以称为流数，即发送数据做预编码时包含的互不相关的信号的流数。网络设备根据终端上报的各个发送天线间的最大相干能力，通过码本的方式向终端指示上行传输方式。具体的，网络设备和终端预先存储多个表格指示的上行传输的码本，码本中的码字可通过预编码指示(transmission precoding matrix indicator，TPMI)索引值来指示，码字用于确定上行数据发送的预编码矩阵。网络设备根据各个天线端口对应的上行信道信息，通过下行控制信息(downlink control information，DCI)信令将上行传输层数(transmission rankindicator，TRI)和TPMI指示给终端，终端根据TRI和TPMI发送上行数据。TPMI指示码字对应的预编码矩阵中的行表示发送天线端口，列表示传输层数。行元素为非零代表用于上行传输的天线端口。
关于上行数据传输的发送功率确定方式，现有技术中一种实现方式为，终端将非零天线端口数(终端根据当前指示的TPMI确定)与总天线端口数(终端所能支持的最大天线端口数)的比值乘以信道发送功率P，得到上行发送功率P 1，进一步将上行发送功率P 1平均分配到每个非零发送天线端口上。而上述比值在某些TPMI指示下为小于1的值，比如TPMI类型为非相干码字(2Tx，4Tx)，或者TPMI类型为部分相干码字(4Tx)，因此对于部分相干或非相干能力的终端，终端用于上行传输的非零天线端口的实际发送功率总和总小于信道发送功率，由于信道发送功率的最大取值为额定的最大发送功率，这种功率确定方式使得用于上行传输的非零天线端口的实际发送功率总和总达不到最大发送功率。 现有技术中另一种功率确定方式为，对于部分相干或非相干能力的终端，不进行功率缩减而直接将信道发送功率P平均分配到每根非零的发送天线上，使得不同相干能力终端的上行传输可以达到额定的最大发送功率。针对上述另一种实现方式，由于不同终端的天线形态(每个PA的最大发送功率)不同，则通过TPMI选择不同的PA进行上行传输可能达到不同的最大发送功率。例如，当TPMI指示为
Figure PCTCN2020071531-appb-000001
时，配置了一个大功率PA的终端设备可以直接支持满功率传输，但配置了两个小功率PA的终端设备只能通过天线虚拟化的方式支持满功率传输，上述实现方式需要终端通知网络设备从而使得网络设备确定上行数据传输的最优TPMI，以及无法获得准确的上行传输的调制和编码方式(modulation coding scheme，MCS)，从而造成上行传输的性能损失。
发明内容
本申请实施例提供一种通信方法及装置，用以解决现有技术无法实现终端上行传输最大发送功率的方案的问题。
本申请实施例提供的具体技术方案如下：
第一方面，提供一种通信方法，该方法的执行主体可以是终端，该方法可以通过以下方式实现：终端确定能力指示信息，所述能力指示信息用于确定功率缩减因子，所述功率缩减因子为n个非零天线端口的实际发送功率总和与信道发送功率的比值，所述信道发送功率的最大取值为系统额定的最大发送功率，n为正整数；所述能力指示信息用于指示一个或者多个码字；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，额外配置的探测参考信号SRS的端口数，所述额外配置的SRS的端口数不同于最大天线端口数；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，是否支持配置多个不同端口数的SRS资源；和/或，所述能力指示信息用于指示在传输秩取值为x时，所述功率缩减因子的取值；其中，所述x的取值为{1，2，3}中的一个或者多个；所述终端发送所述能力指示信息。用以在不会泄露终端的天线架构的基础上，使得网络设备能够基于终端设备上报的关于功率控制的能力指示信息更准确的确定上行数据传输的TPMI以及MCS，从而保证上行传输的性能。
在一个可能的设计中，所述功率缩减因子包括：n/M、n/N或1中的一个或者多个，其中，n为小于等于M的正整数，M为参考信号的端口数且M为小于等于N的正整数，所述N为所述终端能支持的最大传输端口数且N为正整数。在一个可能的设计中，所述能力指示信息指示的一个或者多个码字表示为N*A的矩阵，其中，A为当前传输层数，当N＝2时，A的取值为1，当N＝4时，A的取值为1、2或3中的一个或多个；所述能力指示信息的状态位对应一个或者一组码字；或者，所述能力指示信息的比特位对应一个或者一组码字。
在一个可能的设计中，所述能力指示信息指示的一个或者多个码字包括码字组1，所述码字组1包括以下码字中的至少一个：
Figure PCTCN2020071531-appb-000002
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000003
和/或，所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：
Figure PCTCN2020071531-appb-000004
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000005
b的取值为1，-1，j，-j中的至少一个。
在一个可能的设计中，所述能力指示信息指示的一个或者多个码字包括第一码字组中的一个或者多个，所述第一码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000006
其中，a的取值为1或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000007
其中，a的取值为
Figure PCTCN2020071531-appb-000008
或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000009
其中，a的取值为
Figure PCTCN2020071531-appb-000010
或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括
Figure PCTCN2020071531-appb-000011
其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，
所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000012
其中，b的取值为
Figure PCTCN2020071531-appb-000013
或者2；和/或，
所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000014
其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，
所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：
Figure PCTCN2020071531-appb-000015
其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，
所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：
Figure PCTCN2020071531-appb-000016
和/或，
所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000017
和/或，
所述能力指示信息指示的一个或者多个码字包括第十码字组，所述第十码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000018
在一个可能的设计中，所述能力指示信息的5个状态位分别对应所述第一码字组中的零个码字、一个码字、两个码字、三个码字和四个码字；或者，所述能力指示信息的4个比特位分别对应所述第一码字组中的四个码字；和/或，所述能力指示信息的一个比特位对应所述第二码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第三码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第四码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第六码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第七码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第八码字组中的码字；和/或，所述能力指示信息的一个比特位对应所述第九码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第十码字组中的部分或全部码字；和/或，所述能力 指示信息的2个比特位分别对应所述码字组1中的两个码字；和/或，所述能力指示信息的1个比特位对应所述码字组2中的一个或者多个码字。
在一个可能的设计中，所述第五码字组中的三个码字分别对应所述能力指示信息中的三个比特位，其中，所述第五码字组中的三个码字中存在非零元素分别位于第一行、第二行、第三行和第四行的码字；或者，所述第五码字组包括如下码字集合中的一个或者多个：
Figure PCTCN2020071531-appb-000019
Figure PCTCN2020071531-appb-000020
所述码字集合分别对应所述能力指示信息的一个状态位。
在一个可能的设计中，所述能力指示信息指示的信息包括，所述一个或者多个码字用于支持功率缩减因子取值为1，或者，用于支持n个非零天线端口的实际发送功率的和可以达到系统额定的最大发送功率，或者，用于支持直接将信道发送功率均分给非零天线端口，所述一个或者多个码字为上述第一码字组到第十码字组中的码字或码字组1和码字组2中的码字；和/或，所述能力指示信息指示的信息还包括，除所述一个或者多个码字之外的其他码字用于支持功率缩减因子取值为1/N，或者，用于支持n个非零天线端口的实际发送功率的和不可以达到系统额定的最大发送功率，或者，用于支持将信道发送功率先乘以功率缩减因子之后均分给非零天线端口，所述除一个或者多个码字之外的其他码字为上述第一码字组到第十码字组中的码字或码字组1和码字组2中的码字。
在一个可能的设计中，所述一个或者多个码字用于支持功率缩减因子取值为1，表明需要配置不同端口数的SRS资源。进一步的，所述不同端口数的SRS资源配置在一个SRS资源集合内。
在一个可能的设计中，所述一个或者多个码字用于支持功率缩减因子取值为1，表明需要配置不同端口数的SRS资源，且表明了需要额外配置的SRS资源的端口数。进一步的，所述不同端口数的SRS资源配置在一个SRS资源集合内。
在一个可能的设计中，当所述能力指示信息的第一比特位取值为1且所述第一比特位对应的一个或者一组码字中的码字被DCI指示时，第一数据的所述功率缩减因子为1，其中，所述第一数据为所述DCI调度的。
在一个可能的设计中，当所述能力指示信息的第一比特位取值为0且所述第一比特位对应的一个或者一组码字中的码字被DCI指示时，第一数据的所述功率缩减因子为n/M，或者n/N，其中，所述第一数据为所述DCI调度的。
在一个可能的设计中，所述能力指示信息用于指示一个或者多个码字，和，在最大传 输秩取值为x时，参考信号SRS的端口数，当所述能力指示信息指示所述第一码字组中的零个码字时，或者，当所述能力指示信息中对应所述第一码字组的比特位均置0时，在最大传输秩取值为1时，所述参考信号SRS的端口数为大于等于1的整数；和/或，当所述能力指示信息中对应所述第五码字组的比特位均置0时，在最大传输秩rank取值为2时，所述SRS的端口数为大于等于2的整数。
在一个可能的设计中，当所述能力指示信息中对应
Figure PCTCN2020071531-appb-000021
的比特位置1时，所述SRS的端口数为1；或者，当所述能力指示信息中对应
Figure PCTCN2020071531-appb-000022
的比特位置1时，所述SRS的端口数为1。
在一个可能的设计中，所述x的取值为{1}、{2}和/或{3}；或者，所述x的取值为{1,2}和/或{3}；或者，所述x的取值为{1}和/或{2,3}。
在一个可能的设计中，确定第一数据的功率缩减因子的取值为n/M或者为1，其中，所述第一数据的发送端口根据第一SRS确定，所述第一SRS的端口数为所述能力指示信息指示的参考信号SRS的端口数。
在一个可能的设计中，SRS资源集合中包括多个SRS资源，所述多个SRS资源中的SRS资源的端口数不同，所述SRS资源集合中存在至少一个SRS资源的端口数与所述能力指示信息指示的SRS的端口数相同，或者，所述SRS资源集合中的部分SRS资源的端口数之和与所述能力指示信息指示的SRS的端口数相同。
在一个可能的设计中，所述SRS的端口数小于N，或者，所述SRS的类型为虚拟化。
在一个可能的设计中，所述x的取值为{2}和/或{3}和/或{2,3}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝1；或者，所述x的取值为{1}和/或{1,2}和/或{2}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝3；或者，所述x的取值为{1}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝2和/或3。
在一个可能的设计中，所述能力指示信息指示
Figure PCTCN2020071531-appb-000023
或
Figure PCTCN2020071531-appb-000024
时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000025
时，b的取值为1或者
Figure PCTCN2020071531-appb-000026
所述功率缩减因子为1。
在一个可能的设计中，所述能力指示信息指示
Figure PCTCN2020071531-appb-000027
或
Figure PCTCN2020071531-appb-000028
或
Figure PCTCN2020071531-appb-000029
或
Figure PCTCN2020071531-appb-000030
时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000031
或
Figure PCTCN2020071531-appb-000032
或
Figure PCTCN2020071531-appb-000033
或
Figure PCTCN2020071531-appb-000034
或
Figure PCTCN2020071531-appb-000035
或
Figure PCTCN2020071531-appb-000036
或
Figure PCTCN2020071531-appb-000037
或
Figure PCTCN2020071531-appb-000038
时，所述终端设备请求配置端口数为2的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000039
或
Figure PCTCN2020071531-appb-000040
或
Figure PCTCN2020071531-appb-000041
或
Figure PCTCN2020071531-appb-000042
或
Figure PCTCN2020071531-appb-000043
或
Figure PCTCN2020071531-appb-000044
时，所述终端设备请求配置2个端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS。
第二方面，提供一种通信方法，该方法包括：网络设备从终端接收能力指示信息；所述能力指示信息用于确定功率缩减因子，所述功率缩减因子为n个非零天线端口的实际发送功率总和与信道发送功率的比值，所述信道发送功率的最大取值为系统额定的最大发送功率，n为正整数；所述能力指示信息用于指示一个或者多个码字；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，额外配置的探测参考信号SRS的端口数，所述额外配置的SRS的端口数不同于最大天线端口数；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，是否支持配置多个不同端口数的SRS资源；和/或，所述能力指示信息用于指示在传输秩取值为x时，所述功率缩减因子的取值；其中，所述x的取值为{1，2，3}中的一个或者多个。用以在不会泄露终端的天线架构的基础上，使得网络设备能够基于终端设备上报的关于功率控制的能力指示信息更准确的确定上行数据传输的TPMI以及MCS，从而保证上行传输的性能。
在一个可能的设计中，所述方法还包括：所述网络设备确定第一数据的功率缩减因子为1；所述网络设备向所述终端发送下行控制信息DCI；其中，所述DCI用于调度所述第一数据，所述第一数据采用的码字为所述能力指示信息的第一比特位取值为1且所述第一比特位对应的一个或者一组码字中的码字。
在一个可能的设计中，所述能力指示信息指示的一个或者多个码字表示为N*A的矩阵，其中，A为当前传输层数，当N＝2时，A的取值为1，当N＝4时，A的取值为1、2或3中的一个或多个；所述能力指示信息的状态位对应一个或者一组码字；或者，所述能力指示信息的比特位对应一个或者一组码字。
在一个可能的设计中，所述能力指示信息指示的一个或者多个码字包括码字组1，所述码字组1包括以下码字中的至少一个：
Figure PCTCN2020071531-appb-000045
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000046
和/或，所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：
Figure PCTCN2020071531-appb-000047
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000048
b的取值为1，-1，j，-j中的至少一个。
在一个可能的设计中，所述能力指示信息指示的一个或者多个码字包括第一码字组中 的一个或者多个，所述第一码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000049
其中，a的取值为1或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000050
其中，a的取值为
Figure PCTCN2020071531-appb-000051
或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000052
其中，a的取值为
Figure PCTCN2020071531-appb-000053
或者0.5；和/或，所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括
Figure PCTCN2020071531-appb-000054
其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000055
其中，b的取值为
Figure PCTCN2020071531-appb-000056
或者2；和/或，所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000057
其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：
Figure PCTCN2020071531-appb-000058
其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个；和/或，所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：
Figure PCTCN2020071531-appb-000059
和/或，所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000060
和/或，所述能力指示信息指示的一个或者多个码字包括第十码 字组，所述第十码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000061
Figure PCTCN2020071531-appb-000062
在一个可能的设计中，所述能力指示信息的5个状态位分别对应所述第一码字组中的零个码字、一个码字、两个码字、三个码字和四个码字；或者，所述能力指示信息的4个比特位分别对应所述第一码字组中的四个码字；和/或，所述能力指示信息的一个比特位对应所述第二码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第三码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第四码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第六码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第七码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第八码字组中的码字；和/或，所述能力指示信息的一个比特位对应所述第九码字组中的部分或全部码字；和/或，所述能力指示信息的一个比特位对应所述第十码字组中的部分或全部码字；和/或，所述能力指示信息的2个比特位分别对应所述码字组1中的两个码字；和/或，所述能力指示信息的1个比特位对应所述码字组2中的一个或者多个码字。
在一个可能的设计中，所述第五码字组中的三个码字分别对应所述能力指示信息中的三个比特位，其中，所述第五码字组中的三个码字中存在非零元素分别位于第一行、第二行、第三行和第四行的码字；或者，所述第五码字组包括如下码字集合中的一个或者多个：
Figure PCTCN2020071531-appb-000063
Figure PCTCN2020071531-appb-000064
所述码字集合分别对应所述能力指示信息的一个状态位。
在一个可能的设计中，当所述能力指示信息的第一比特位取值为1且DCI指示所述第一比特位对应的一个或者一组码字中的码字时，第一数据的所述功率缩减因子为1，其中，所述第一数据为所述DCI调度的。
在一个可能的设计中，当所述能力指示信息的第一比特位取值为0且所述DCI指示第一比特位对应的一个或者一组码字中的码字时，第一数据的所述功率缩减因子为n/M，或者n/N，其中，所述第一数据为所述DCI调度的。
在一个可能的设计中，所述能力指示信息用于指示一个或者多个码字，和，在最大传输秩取值为x时，参考信号SRS的端口数，当所述能力指示信息指示所述第一码字组中的零个码字时，或者，当所述能力指示信息中对应所述第一码字组的比特位均置0时，在最大传输秩取值为1时，所述参考信号SRS的端口数为大于等于1的整数；和/或，当所述能力指示信息中对应所述第五码字组的比特位均置0时，在最大传输秩rank取值为2时，所述SRS的端口数为大于等于2的整数。
在一个可能的设计中，当所述能力指示信息中对应
Figure PCTCN2020071531-appb-000065
的比特位置1时，所述SRS的端口数为1；或者，当所述能力指示信息中对应
Figure PCTCN2020071531-appb-000066
的比特位置1时，所述SRS的端口数为1。
在一个可能的设计中，所述x的取值为{1}、{2}和/或{3}；或者，所述x的取值为{1,2}和/或{3}；或者，所述x的取值为{1}和/或{2,3}。
在一个可能的设计中，确定第一数据的功率缩减因子的取值为n/M或者为1，其中，所述第一数据的发送端口根据第一SRS确定，所述第一SRS的端口数为所述能力指示信息指示的参考信号SRS的端口数。
在一个可能的设计中，SRS资源集合中包括多个SRS资源，所述多个SRS资源中的SRS资源的端口数不同，所述SRS资源集合中存在至少一个SRS资源的端口数与所述能力指示信息指示的SRS的端口数相同，或者，所述SRS资源集合中的部分SRS资源的端口数之和与所述能力指示信息指示的SRS的端口数相同。
在一个可能的设计中，所述SRS的端口数小于N，或者，所述SRS的类型为虚拟化。
在一个可能的设计中，所述x的取值为{2}和/或{3}和/或{2,3}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝1；或者，所述x的取值为{1}和/或{1,2}和/或{2}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝3；或者，所述x的取值为{1}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝2和/或3。
在一个可能的设计中，所述能力指示信息指示
Figure PCTCN2020071531-appb-000067
或
Figure PCTCN2020071531-appb-000068
时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000069
时，b的取值为1或者
Figure PCTCN2020071531-appb-000070
所述功率缩减因子为1。
在一个可能的设计中，所述能力指示信息指示
Figure PCTCN2020071531-appb-000071
或
Figure PCTCN2020071531-appb-000072
或
Figure PCTCN2020071531-appb-000073
或
Figure PCTCN2020071531-appb-000074
时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和 /或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000075
或
Figure PCTCN2020071531-appb-000076
或
Figure PCTCN2020071531-appb-000077
或
Figure PCTCN2020071531-appb-000078
或
Figure PCTCN2020071531-appb-000079
或
Figure PCTCN2020071531-appb-000080
或
Figure PCTCN2020071531-appb-000081
或
Figure PCTCN2020071531-appb-000082
时，所述终端设备请求配置端口数为2的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，所述能力指示信息指示
Figure PCTCN2020071531-appb-000083
或
Figure PCTCN2020071531-appb-000084
或
Figure PCTCN2020071531-appb-000085
或
Figure PCTCN2020071531-appb-000086
或
Figure PCTCN2020071531-appb-000087
或
Figure PCTCN2020071531-appb-000088
时，所述终端设备请求配置2个端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS。
第三方面，提供一种通信装置，该装置应用于终端，或该装置为一种终端，该装置具有实现上述第一方面和第一方面中任一种可能的设计中的方法的功能，其包括用于执行上述方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件(如电路)实现，或者通过硬件和软件结合来实现。
在一种可能的设计中，上述通信装置包括一个或多个处理器和通信单元。所述一个或多个处理器被配置为支持所述信号处理装置执行上述方法中的功能。所述通信单元用于支持所述通信装置与其他设备通信，实现接收和/或发送功能。例如，发送能力指示信息。
可选的，所述通信装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中，上述通信装置，包括收发器、处理器和存储器。该处理器用于控制收发器或输入/输出电路收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该装置执行第一方面或第一方面中任一种可能的设计中的方法。
第四方面，提供一种通信装置，该装置应用于网络设备，或该装置为一种网络设备，该装置具有实现上述第二方面和第二方面中任一种可能的设计中的方法的功能，其包括用于执行上述方面所描述的步骤或功能相对应的部件(means)。所述步骤或功能可以通过软件实现，或硬件(如电路)实现，或者通过硬件和软件结合来实现。
在一种可能的设计中，上述通信装置包括一个或多个处理器和通信单元。所述一个或 多个处理器被配置为支持所述信号处理装置执行上述方法中的功能。例如，调用通信单元接收和/或发送信号。所述通信单元用于支持所述通信装置与其他设备通信，实现接收和/或发送功能。例如，接收能力指示信息，以及根据所述第一码字，发送下行控制信息。
可选的，所述通信装置还可以包括一个或多个存储器，所述存储器用于与处理器耦合，其保存装置必要的程序指令和/或数据。所述一个或多个存储器可以和处理器集成在一起，也可以与处理器分离设置。本申请并不限定。
所述通信单元可以是收发器，或收发电路。可选的，所述收发器也可以为输入/输出电路或者接口。
所述装置还可以为通信芯片。所述通信单元可以为通信芯片的输入/输出电路或者接口。
另一个可能的设计中，上述通信装置，包括收发器、处理器和存储器。该处理器用于控制收发器或输入/输出电路收发信号，该存储器用于存储计算机程序，该处理器用于运行该存储器中的计算机程序，使得该装置执行第二方面或第二方面中任一种可能的设计中的方法。
第五方面，提供了一种系统，该系统包括终端和网络设备，其中，所述终端用于执行上述第一方面或第一方面的任一种可能的设计中所述的方法；或者，所述网络设备用于执行上述第二方面或第二方面的任一种可能的设计中所述的方法。
第六方面，提供了一种计算机可读存储介质，用于存储计算机程序，该计算机程序包括用于执行上述各方面中方法的指令。
第七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码在计算机上运行时，使得计算机执行上述各方面中的方法。
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具体实施方式
本申请实施例提供一种通信方法及装置，终端根据与网络设备预先定义的码字，通过上报码字的方式隐式上报终端的天线架构，在不会泄露终端的天线架构的基础上，网络设 备能够根据码字更准确的确定上行传输的TPMI以及MCS，从而保证上行传输的性能。
其中，方法和装置是基于同一构思的，由于方法及装置解决问题的原理相似，因此装置与方法的实施可以相互参见，重复之处不再赘述。
本申请实施例的描述中，“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。本申请中所涉及的至少一个是指一个或多个；多个，是指两个或两个以上。另外，需要理解的是，在本申请的描述中，“第一”、“第二”等词汇，仅用于区分描述的目的，而不能理解为指示或暗示相对重要性，也不能理解为指示或暗示顺序。
本申请实施例提供的信号处理方法可以应用于各种通信系统，例如：长期演进(long term evolution，LTE)系统，全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统，未来的第五代(5th Generation，5G)系统，如新一代无线接入技术(new radio access technology，NR)，及未来的通信系统，如6G系统等。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图1示出了本申请实施例提供的通信方法适用的一种可能的通信系统的架构，参阅图1所示，通信系统100中包括：该通信系统100包括：网络设备101和终端102。
网络设备101为具有无线收发功能的设备或可设置于该设备的芯片，该设备包括但不限于：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(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令或PHCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网RAN中的网络设备，也可以将CU划分为核心网CN中的网络设备，在此不做限制。
终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、 移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。本申请中将具有无线收发功能的终端设备及可设置于前述终端设备的芯片统称为终端设备。
为方便对本申请实施例的理解，首先介绍一下本申请实施例涉及到的概念和基础知识。
首先介绍一下天线端口的概念。
包括上行数据信道的天线端口，如物理上行共享信道(physical uplink shared channel，PUSCH)的天线端口；解调参考信号的天线端口，例如解调参考信号(demodulation reference signal，DMRS)的天线端口；或用于信道探测参考信号的天线端口，如探测参考信号(sounding reference signal，SRS)的天线端口。天线端口是指的用于承载具体的物理信道，和/或，物理信号的天线端口。通过相同天线端口所发送的信号，无论这些信号是否是通过相同或不同的物理天线发送，他们在空间传输所经历的路径所对应的信道可视为相同或者相关，也就是说，在相同的天线端口所发送的信号，接收端在解调时可以认为其信道相同或者相关。天线端口是一种逻辑上的含义。通常，信号接收端通过天线端口识别具有不同传输信道的信号。本申请中天线端口可以认为是发送天线端口，天线可以认为是发送天线。具体而言，对于PUSCH和DMRS的天线端口，通常是逻辑端口，即每一个PUSCH和DMRS的天线端口可以通过终端设备的物理端口经过虚拟化，或者经过特定的预编码矩阵加权作用在多个物理端口上形成的逻辑端口，每一个PUSCH和DMRS的天线端口可以对应一个传输层。对于SRS的天线端口，既可以是物理天线端口，即每一个终端的传输链路对应一个SRS的天线端口，传输链路包括射频RF，功率放大器PA以及物理天线组成的发送链路；也可以是逻辑端口，即每一个SRS的天线端口由多个物理天线或者传输链路经过虚拟化形成。
以下介绍一下基于码本的上行传输机制。
在上行传输之前，终端会上报该终端的天线能力，天线能力可以通过射频参数上报。天线能力可以包括天线数量、可以支持的PUSCH和DMRS对应的最大传输层数、射频链路数量、天线数量、PA数量、可以支持的SRS天线端口的数量、最大射频链路数量或最大天线数量中的任一种或多种。天线数量比如可以包括1、2或4，可以直接上报，也可以通过最大SRS天线端口的数量隐含上报。其中，传输层数指的是传输块(TB)或者码字(codeword)在空间上形成的正交信号的流数，传输层可以根据预编码方式映射到各个天线端口上发送。比如终端使用四个天线端口发送数据，但是使用该四个天线端口采用相同的预编码方式发送的是同一层数据，使用该四个天线端口采用另一种预编码方式发送的是另一层数据。再比如，四个天线端口包括端口0、端口1、端口2和端口3，终端使用端口0和端口1发送层1的数据，且使用端口2和端口3层2的数据。上述不同种天线能力之间存在相关性：可以支持的PUSCH和DMRS对应的最大传输层数与可以支持的SRS天线端口的数量(一个SRS资源中的)是相等的，它们与终端的传输链路或者天线数量通常也 是相同的，比如，1个4天线终端设备，通常可以支持最大4层PUSCH传输，也可以支持最大4端口的SRS资源配置。上述天线能力中的一种或者多种对应本发明中的N，即：最大天线端口数量。
进一步的，终端还会上报各个发送天线之间的最大相干能力。对于最大支持2天线端口的终端，相干能力包括完全相干(fully-coherent)能力和非相干(non-coherent)能力。其中，完全相干(fully-coherent)能力，表明终端的2个发送天线端口之间完成相位校准，可以进行相位加权，即：可以采用2个发送天线发送同一层数据。非相干(non-coherent)能力，表明终端的2个发送天线之间未完成相位校准，则不可以进行相位加权发送相同一层数据，即：只能使用一根天线发送同一层数据。
对于4天线(端口)的终端，相干能力包括完全相干(fully-coherent)能力、部分相干(partially-coherent)能力和非相干(non-coherent)能力。其中，完全相干(fully-coherent)能力，表明UE的全部发送天线完成相位校准，可以进行相位加权，即所有UE天线均可以发送同一个数据层。部分相干(partially-coherent)能力，表明UE的两两发送天线组内完成相位校准，可以进行相位加权，而UE的两两发送天线组间未完成相位校准，不可以进行相位加权，即天线组内的2个发送天线可以发送同一层数据。非相干(non-coherent)能力，表明UE的4个发送天线之间均未完成相位校准，均不可以进行相位加权发送相同的数据层，即对于同一层数据，只能使用一根天线发送。
网络设备在调度上行数据之前需要获取信道信息。此时，需要终端发送探测参考信号(sounding reference signal，SRS)。网络设备通过接收并测量SRS以确定上行信道质量，从而进行上行频率选择性调度。由于终端可能具有多个发送天线端口，则通常终端的SRS资源具有多个端口，分别对应终端的多个发送天线端口。基站可以通过测量SRS的多个端口获得各个发送天线上的信道信息，从而可以指示用于上行数据如PUSCH发送的各个发送端口的预编码方式。通常，基站会配置SRS资源中的天线端口数等于终端上报的最大SRS天线端口数，从而可以选择合适的终端天线端口用于数据传输。
网络设备向终端指示各个发送端口的预编码方式以及选择合适的天线端口用于数据传输可以基于码本的方式实现。网络设备和终端均针对不同天线端口数、不同层数或不同波形，预先存储多个码本。码本也可以认为是码字集合。例如，如表1-表7所示的用于上行传输的码本。码本中每个码字按照表格中从左到有的TPMI索引值增加的顺序排列。在实际应用中，终端在网络设备配置的SRS资源上发送SRS，若有多个端口，可以在多个端口上分别发送SRS。网络设备在相应SRS资源上接收并测量SRS获得上行信道信息。基于信道信息，网络设备通过下行控制信息(如DCI)向终端指示上行传输的传输层数(transmission rank indicator，TRI)和TPMI。终端根据DCI中指示的TRI和TPMI发送上行数据。进一步的，若配置了多个SRS资源，则DCI中还会指示SRS资源选择信息(SRS resource indication，SRI)，则终端设备发送PUSCH会采用SRI指示的SRS资源上发送SRS所采用的天线端口。其中，网络设备在指示码字或TPMI时，根据终端的最大相干能力，选择与终端的相干能力匹配的码字。比如，终端上报的最大相干能力为完全相干，网络设备可以指示采用完全相干、部分相关和非相干类型的码字，或者采用部分相干和非相干类型的码字，或者采用非相干类型的码字；再比如，终端上报的最大相干能力为部分相干，则网络设备指示采用部分相干和非相干类型的码字，或者采用非相干类型的码字。
表1～表7中，W表示预编码矩阵，一个TPMI索引对应一个预编码矩阵，或者说对应 一个码字。码字中的行对应终端设备的多个发送天线端口，每一列依次对应该传输层所采用的天线端口，对于某一列而言，若某一行的元素置非0，表明该行对应的天线端口用于发送该列对应的传输层，同时，同一列中不同行可以指示不同的值，对应了不同天线端口在该传输层上的相位加权。
表1
Figure PCTCN2020071531-appb-000089
表1为2天线端口1层传输的码本，TPMI索引值共6个，包括0～5。索引值0、1对应的码字为非相干类型的码字。索引值2～5对应的码字为完全相干类型的码字。比如TPMI0对应的码字表明：当前数据传输采用1层，该层传输采用端口0。
表2
Figure PCTCN2020071531-appb-000090
表2为2天线端口2层传输的码本，TPMI索引值共3个，包括0～2。索引值0对应的码字为非相干类型的码字。索引值1和2对应的码字为完全相干类型的码字。比如TPMI0对应的码字表明：当前数据传输采用2层，层1传输采用端口0，层2传输采用端口1。
表3
Figure PCTCN2020071531-appb-000091
表3为4天线端口1层传输离散傅里叶变换扩展正交频分复用(DFT spread OFDM，DFT-s-OFDM)波形的码本，TPMI索引值共28个，包括0～27。索引值0～3对应的码字为非相干类型的码字。索引值4～11对应的码字为部分相干类型的码字。索引值12～27对应的码字为完全相干类型的码字。
表4
Figure PCTCN2020071531-appb-000092
表4为4天线端口1层传输循环前缀(cyclic prefix，CP)-OFDM波形的码本，TPMI索引值共28个，包括0～27。索引值0～3对应的码字为非相干类型的码字。索引值4～11对应的码字为部分相干类型的码字。索引值12～27对应的码字为完全相干类型的码字。
表5
Figure PCTCN2020071531-appb-000093
表5为4天线端口2层传输CP-OFDM波形的码本，TPMI索引值共22个，包括0～21。 索引值0～5对应的码字为非相干类型的码字。索引值6～13对应的码字为部分相干类型的码字。索引值14～21对应的码字为完全相干类型的码字。
表6
Figure PCTCN2020071531-appb-000094
表6为4天线端口3层传输CP-OFDM波形的码本，TPMI索引值共7个，包括0～6。索引值0对应的码字为非相干类型的码字。索引值1～2对应的码字为部分相干类型的码字。索引值3～6对应的码字为完全相干类型的码字。
表7
Figure PCTCN2020071531-appb-000095
表7为4天线端口4层传输CP-OFDM波形的码本，TPMI索引值共5个，包括0～4。索引值0对应的码字为非相干类型的码字。索引值1～2对应的码字为部分相干类型的码字。索引值3～4对应的码字为完全相干类型的码字。
终端支持的端口数更多，预先定义的码本的数量也就更多。码本的表现形式处理以表格的方式，还可以通过其他方式来体现。
以下介绍一下终端发送功率的确定机制。
终端在上行传输之前需要确定上行传输的信道发送功率。以PUSCH传输为例。现有技术的一种可能的实现方式中(以下简称现有技术一)，终端上行传输的实际发送功率是通过非零天线端口数与终端所能支持的最大天线端口数的比值乘信道发送功率P PUSCH,b,f,c(i,j,q d,l)确定的，其中，非零天线端口数n与终端所能支持的最大天线端口数的比值是功率缩减因子，功率缩减因子等于实际发送功率与信道发送功率的比值，该上行传输的实际发送功率为n个非零天线端口的实际发送功率总和，其中n个非零天线端口是根据基站指示的TPMI确定的，具体地，n为TPMI对应的码字中包含至少一个非零元素的行数。进一步将所得的经过缩减的信道发送功率平分给每个非零天线端口上，非零天线端口根据上述表1-7中的TPMI确定。以表4为例，若网络设备指示TPMI 0时，非零的天线端口数为1，配置的天线端口数为4，则实际PUSCH的发送功率为1/4P PUSCH,b,f,c(i,j,q d,l)，该发送功率会分配给端口0；以表5为例，若网络设备指示TPMI 0时，非零的PUSCH传输的天线端口数为2，配置的天线端口数为4，则实际PUSCH的发送功率为1/2 P PUSCH,b,f,c(i,j,q d,l)，该发送功率会分配给端口0和端口2，则每个天线端口上的功率为1/4P PUSCH,b,f,c(i,j,q d,l)，若网络设备指示TPMI 7时，非零的PUSCH传输的天线端口数为4，配置的总天线端口数为4，则实际PUSCH的发送功率为P PUSCH,b,f,c(i,j,q d,l)，每个天线端口上的功率为1/4P PUSCH,b,f,c(i,j,q d,l)。
其中，终端根据以下公式确定信道发送功率P PUSCH,b,f,c(i,j,q d,l)：
Figure PCTCN2020071531-appb-000096
其中，b是物理上行共享信道(physical uplink shared channel，PUSCH)传输所占的部分带宽(bandwidth part，BWP)，f是PUSCH传输所占的载波(carrier)，c是该载波所在的服务小区(serving cell)，l是网络设备通过高层信令配置的功控参数集合，下述高层信令配置的参数值均配置在该功控参数集合中：
p CMAX,f,c(i)是通信系统所能允许的最大发送功率，也就是系统额定的最大发送功率，该最大发送功率值可以根据协议规定以及实际传输的信道条件进行上下浮动；系统额定的最大发送功率既可以表征终端设备发送上行数据支持的最大功率的能力，或者说，终端设备能够支持的最大发送功率。可选地，最大发送功率可以是网络设备配置给终端设备的发送功率，表示网络设备允许终端设备能够使用的最大发送功率。可选地，最大发送功率也可以是网络设备约定终端设备能够采用的最大发送功率。
p O_PUSCH,b,f,c(j)是网络设备通过高层信令配置的参数值，当网络设备通过高层配置多个参数值时，终端设备进一步根据下行控制信息(downlink control information，DCI)中相应的指示字段从该多个参数值中选择其中之一确定，或者，根据预定义的规则从多个参数值中选择其中之一确定；
α a,b,c(j)是网络设备通过高层信令配置的参数值，当网络设备通过高层配置多个参数值时，终端设备进一步根据下行控制信息(downlink control information，DCI)中相应的指示字段从该多个参数值中选择其中之一确定，或者，根据预定义的规则从多个参数值中选择其中之一确定；
Figure PCTCN2020071531-appb-000097
是PUSCH所占的资源块(resource block，RB)数；
PL b,f,c(q d)是基于网络设备配置的参考信号(reference resource，RS)估计得到的；
Δ TF,b,f,c(i)的取值与传输层数相关，与码块(code block)数、码块大小、PUSCH所占的RE数以及PUSCH上承载的数据类型均可以相关。一种Δ TF,b,f,c(i)的计算方式为
Figure PCTCN2020071531-appb-000098
其中，K S通过高层信令指示，BPRE的取值与码块(code block)数、码块大小、PUSCH所占的RE数相关，
Figure PCTCN2020071531-appb-000099
与PUSCH上承载的数据类型相关；
f b,f,c(i,l)根据DCI中承载的传输功率指令(transmission power control，TPC)指示确定，在TPC指示累积量的场景中，f b,f,c(i,l)＝f b,f,c(i last,l)+δ PUSCH,b,f,c(i last,i,K PUSCH,l)，在TPC指示绝对量的场景中，f b,f,c(i,l)＝δ PUSCH,b,f,c(i last,i,K PUSCH,l)。
在现有技术一中，终端根据信道发送功率和配置的天线端口的数量M确定每个天线端 口上采用的发送功率。例如，每个天线端口的发送功率为信道发送功率与M的比值。实际的上行传输中，发送上行数据采用的天线端口的实际数量可以小于或等于M，实际发送功率表示终端在发送上行数据时实际使用的天线端口的发送功率的总和。其中，实际发送功率小于或等于信道发送功率。现有技术一的确定方式可以被理解为将信道发送功率进行了功率缩减(scale)。
针对现有技术一的功控机制中总PUSCH发送功率按照非零的天线端口数与配置的天线端口数的比值乘信道发送功率P PUSCH,b,f,c(i,j,q d,l)，现有技术二中改为：βP PUSCH,b,f,c(i,j,q d,l)，其中，当DCI指示完全相干码字时，β取值为：非零的PUSCH对应的天线/配置的天线；当DCI指示部分相干/非相干码字时，β取值为：非零的PUSCH对应的天线/配置的天线乘以2；当DCI指示非相干码字时，β取值为：非零的PUSCH对应的天线；现有技术二的效果是使得当TPMI指示部分相干/非相干对应的码字时，通过在上行PUSCH功控中增加发送天线之间的权重系数调整实际PUSCH的发送功率，以保证不同相干能力的终端的PUSCH最大发送功率不变。
本申请实施例中提及的信道发送功率可以认为是现有技术二中的βP PUSCH,b,f,c(i,j,q d,l)，即未经过功率缩减的发送功率。
终端传输上行数据时需要先确定上行传输的信道发送功率。本申请能够实现终端采用未进行功率缩减的信道发送功率发送上行数据。信道发送功率的最大值为终端上行传输占用频带上的最大输出功率。在实际实现中，若定义了终端的功率级别(power classes)，那么信道发送功率应不大于终端的功率级别，其中，终端的功率级别可以按照耐受值进行调整。例如，如表8所示，定义了终端在不同频带上的功率级别及耐受值。
表8
Figure PCTCN2020071531-appb-000100
终端在耐受值的调整后，终端的信道发送功率最大值不超过调整后的功率级别。
以表8中终端的功率级别为级别3为例，不考虑耐受值的情况下，终端的功率级别为23dBm。终端的信道发送功率最大值可以确定为23dBm或者小于或者大于23dBm的值。
终端的天线端口根据PA的能力具有最大发送功率，终端不是每个天线端口的最大发送功率都可以支持信道发送功率最大值。当终端的天线端口的最大发送功率不大于信道发送功率最大值时，终端可以采用多个天线端口虚拟化的方式来达到信道发送功率最大值。
为了支持在终端采用功率不缩减的机制获得的信道发送功率进行上行传输的方法，网络设备能够为终端指示正确的下行控制信息，本申请实施例设计了一种通信方法。终端采用功率不缩减的机制也可以称为终端采用满功率传输机制，所谓满功率传输机制即终端将不经过功率缩减机制获得的信道发送功率分配到终端的天线端口上，向网络设备发送上行数据。
基于上述描述和图1所示的系统架构，如图2所示，本申请实施例提供的通信方法的具体过程如下所述。其中，任意两个或两个以上的连续步骤可以组成本申请需要保护的方案，其余步骤为可选步骤。例如，S201～S202组成的方案为本申请的保护范围。
S201、终端确定能力指示信息。
S202、终端向网络设备发送能力指示信息，网络设备从终端接收能力指示信息。
该能力指示信息可以是一种表征终端发送功率是否可以达到系统额定的最大发送功率的能力，该能力指示信息还可以表征终端设备支持满功率发送的传输机制或者功率控制机制。由于终端发送功率是否以及如何达到系统额定的最大发送功率取决于终端进行上行传输的天线架构，比如每个PA的最大发送功率，若存在达到系统额定发送功率的PA，则当该PA对应的端口被用于上行传输时，可以达到系统额定的最大发送功率，即可以将信道发送功率分配给该端口；以及终端实现上行传输的方式，比如是否支持天线虚拟化成一个天线端口，以将多个不能达到系统额定的最大发送功率的PA的发送功率合并形成一个可以达到系统额定的最大发送功率的天线端口。则该能力指示信息也可以隐式表征终端上行传输的天线形态，或者实现满功率传输的传输方式，从而基站可以选取合理的TPMI、MCS。
具体的，该能力指示信息用于确定功率缩减因子的取值，可以理解的，功率缩减因子的实际取值可以由基站进一步指示，这里的能力指示信息指示只是用于确定功率缩减因子的最大取值，或者说计算方式。该功率缩减因子用于确定为n个非零天线端口的实际发送功率总和：信道发送功率乘以功率缩减因子。根据能力指示信息确定功率缩减因子也就是根据终端实现满功率上行传输所能支持的功率控制机制确定上行传输功率。确定功率缩减因子具体可以为确定功率缩减因子的取值，也可以是确定功率缩减因子的计算方式，还可以是确定功率缩减因子的取值范围，具体为：
取值1(计算方式1或者取值范围1)：功率缩减因子直接确定为1，或者，终端设备确定每个端口的实际发送功率的步骤中去掉了功率缩减操作，即，每个非零天线端口可以直接均分信道发送功率，则功率缩减因子取值为1可以使得上行传输的实际发送功率达到系统额定的最大发送功率，或者实现满功率传输，应理解的，上行传输的实际发送功率，或者为总实际发送功率为每个非零天线端口上的实际发送功率总和，当实现满功率传输时，实际发送功率的总和或者而上行传输的实际发送功率为信道发送功率。此时意味着该终端设备配置的PA均可以达到系统额定的最大发送功率，也就是说，对于全部码字(表1-7 中)均可以将功率缩减因子取1，或者均可以支持满功率传输机制，在本发明中，取值1对应的是满功率传输。例如，当非零天线端口数量为1时，在该功率缩减因子取值的情况下，该非零天线端口上的实际发送功率为信道发送功率。
还应理解，由于器件精确性，终端设备确定的实际发送功率可能与信道发送功率存在略微的差别，也就是说，实际发送功率可能略微大于系统额定的最大发送功率。这里的系统额定的最大发送功率是终端设备确定发送功率最大值的参考。
取值2(计算方式2或者取值范围2)：功率缩减因子等于n/M，其中，n为当前非零天线端口数，M为当前SRS资源中的SRS端口数。n是根据调度上行数据的DCI中指示的TPMI确定的，n为TPMI对应的预编码矩阵中存在非零元素的矩阵行数，非零天线端口表明该天线端口用于发送上行数据，或者表明该天线端口是非零功率的；当网络设备仅配置1个SRS资源时，M的取值根据该SRS资源中包括的SRS端口数确定，即M与该SRS资源中的端口数相等；当网络设备配置了多个SRS资源时，M的取值根据DCI中SRI指示的SRS资源中的端口数确定，即M与该SRS资源中的端口数相等。比如，对于支持最大4天线端口的终端设备，基站可以配置1个4端口的SRS资源(编号0)，此时，若DCI指示非相干码字或者部分相干码字，则功率缩减因子等于1/4或者1/2，则上行数据的最大发送功率为系统额定的最大发送功率的1/4或者1/2；若基站同时配置了1个1端口的SRS资源(编号1)以及1个2端口的SRS资源(编号2)，此时，若DCI中的TPMI指示非相干码字或者部分相干码字且该DCI中的SRI指示SRS资源编号0，则功率缩减因子等于1/4或者1/2，则上行数据的最大发送功率为系统额定的最大发送功率的1/4或者1/2；若DCI中的TPMI指示非相干码字或者部分相干码字且该DCI中的SRI指示SRS资源编号0，则功率缩减因子等于1/4或者1/2，则上行数据的最大发送功率为系统额定的最大发送功率的1/4或者1/2；若DCI中的SRI指示SRS资源编号1，功率缩减因子等于1，则上行数据的发送功率等于信道发送功率，且最大发送功率为系统额定的最大发送功率；若DCI中的SRI指示SRS资源编号2且指示TPMI 0或者1(2端口码本)时，功率缩减因子等于1/2，上行数据的发送功率等于信道发送功率的1/2，且最大发送功率为系统额定的最大发送功率1/2，当指示TPMI 2时，功率缩减因子等于1，上行数据的发送功率等于信道发送功率，且最大发送功率为系统额定的最大发送功率。此时意味着该终端设备存在无法达到系统额定的最大发送功率的PA，也就是说，对于部分码字(表1-7中)无法将功率缩减因子取1，或者无法支持满功率传输机制。
取值3(计算方式3或者取值范围3)：功率缩减因子等于n/N，其中，n为当前非零天线端口数，N为终端所能支持的最大SRS端口数，该SRS端口数通常是一个SRS资源中的SRS端口数，也可以是一个SRS资源集合中的全部SRS端口数。此时，不论SRS资源中的SRS端口数配置或者指示为多少，对于4天线端口的终端设备而言，当DCI指示了非相干码字时，功率缩减因子均为1/4，当DCI指示了部分想干码字时，功率缩减因子均为1/2，对于2天线端口的终端设备而言，当DCI指示了非相干码字时，功率缩减因子为1/2。此时意味着该终端设备不支持满功率传输机制。
可选的，该能力指示信息用于指示码字，为方便描述，这里称为第一码字，该第一码字表示为N*A的矩阵，N*A表示矩阵的维度为N行A列，其中，A、N为正整数，应理解，第一码字可以以一个数组的形式表示并存储，该数组中的各个特定的位置有特定的元素，在本申请中，矩阵的一行/列，各种变换可以仅仅是为了便于描述，在真正实现时，终 端可以直接调度数组中的某几个元素构成特定的集合，该特定的集合对应第一码字的功能。应理解的，N可以是由一个不同于该能力指示信息的其他能力指示信息由终端上报给基站。
可选的，所述能力指示信息指示的一个或者多个码字表示为N*A的矩阵，其中，A为当前传输层数，当N＝2时，A的取值为1，当N＝4时，A的取值为1、2或3中的一个或多个；
所述能力指示信息的状态位对应一个或者一组码字；或者，所述能力指示信息的比特位对应一个或者一组码字。
可选的，所述能力指示信息指示的一个或者多个码字包括码字组1，所述码字组1包括以下码字中的至少一个：
Figure PCTCN2020071531-appb-000101
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000102
和/或，
所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：
Figure PCTCN2020071531-appb-000103
其中，a的取值为1或者
Figure PCTCN2020071531-appb-000104
b的取值为1，-1，j，-j中的至少一个。
可选的，所述能力指示信息指示的一个或者多个码字包括第一码字组中的一个或者多个，所述第一码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000105
其中，a的取值为1或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000106
其中，a的取值为
Figure PCTCN2020071531-appb-000107
或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000108
其中，a的取值为
Figure PCTCN2020071531-appb-000109
或者0.5；和/或，
所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括
Figure PCTCN2020071531-appb-000110
其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，
所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000111
其中，b的取值为
Figure PCTCN2020071531-appb-000112
或者2；和/或，
所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：
Figure PCTCN2020071531-appb-000113
其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，
所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：
Figure PCTCN2020071531-appb-000114
其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，
所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：
Figure PCTCN2020071531-appb-000115
和/或，
所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000116
和/或，
所述能力指示信息指示的一个或者多个码字包括第十码字组，所述第十码字组包括如下码字中的一个或者多个：
Figure PCTCN2020071531-appb-000117
可选的，所述能力指示信息的5个状态位分别对应所述第一码字组中的零个码字、一个码字、两个码字、三个码字和四个码字；或者，
所述能力指示信息的4个比特位分别对应所述第一码字组中的四个码字；和/或，
所述能力指示信息的一个比特位对应所述第二码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第三码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第四码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第六码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第七码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第八码字组中的码字；和/或，
所述能力指示信息的一个比特位对应所述第九码字组中的部分或全部码字；和/或，
所述能力指示信息的一个比特位对应所述第十码字组中的部分或全部码字；和/或，
所述能力指示信息的2个比特位分别对应所述码字组1中的两个码字；和/或，
所述能力指示信息的1个比特位对应所述码字组2中的一个或者多个码字。
可选的，所述第五码字组中的三个码字分别对应所述能力指示信息中的三个比特位，其中，所述第五码字组中的三个码字中存在非零元素分别位于第一行、第二行、第三行和第四行的码字；或者，
所述第五码字组包括如下码字集合中的一个或者多个：
Figure PCTCN2020071531-appb-000118
所述码字集合分别对应所述能力指示信息的一个状态位。
可选的，当N＝2时，SRS的最大端口数为2，A＝1。
可选的，当N＝4时，SRS的最大端口数为4，A的取值为1、2、3中的至少一个。
应注意的是，第一码字的数量不一定是一个，可能会有多个。
其中，矩阵中的每一行依次对应终端的每一个天线端口，也可以依次对应配置的SRS 资源中的天线端口，或者DCI中指示的SRS资源中的天线端口，矩阵中的每一列依次对应每一个传输层。本申请实施例中，非零天线端口也可以称为非零功率天线端口，非零天线端口对应的行中存在不为零的元素。零天线端口在矩阵中对应的行元素均为零元素。能力指示信息指示的码字可以从表1-7中选择。
可选的，能力指示信息可以采用位图(bitmap)的方式，即每一个能力指示信息的比特位均对应一个特定的码字，或者对应一组特定的码字，当终端上报该能力指示信息时某一个比特位置1，则意味着终端设备支持该比特位对应的一个或者一组码字用于满功率传输，当某一个比特位置0，则意味着终端设备不支持该比特位对应的一个或者一组码字用于满功率传输。
可选的，能力指示信息可以不采用bitmap的方式，即每一个能力指示信息的状态位均对应一个或者一组特定的码字，终端设备仅能从多个状态位中选择一个，即选择该状态位对应的一个或者一组特定的码字。
可选的，能力指示信息可以部分采用bitmap的方式，即预先将多个码字分组，组间采用bitmap的方式指示，即每一个或者一组比特位对应一个码字组，当该一个或者一组比特位置0时，相应的码字组未被指示，否则，相应的码字组被指示；而组内可以不采用bitmap的方式指示，即该一个或者一组比特位的不同二进制取值表明从相应的码字组中选择部分或者全部码字。
可选的，能力指示信息还包括，SRS的端口数，比如，能力指示信息中包括n个比特位分别对应最大rank取值为n时是否需要额外配置一个SRS资源，该额外配置的SRS资源中的SRS端口数小于终端设备可以支持的最大SRS端口数。再比如，能力指示信息中还分别指示最大rank取值为n时，需要额外配置的SRS资源个数，每个SRS资源可以为1个端口，或者需要额外配置的SRS的端口数。该额外配置的SRS资源，可以使能终端进行端口虚拟化，也就是一个SRS端口由多个终端的传输链路或者PA经过虚拟化形成的虚拟端口。
再比如，能力指示信息中对应第一码字组的比特位指示为0，或者，能力指示信息中指示第一码字组中的零个码字，表明该第一码字组中的码字均不能支持满功率传输，其中，第一码字组是上行传输最大4天线端口时用于rank＝1的情况下指示天线端口选择的码字，则上述能力指示信息指示rank＝1的情况下，需要额外配置至少一个SRS资源，该SRS资源中的SRS端口数小于终端设备可以支持的最大SRS端口数，一种具体的情况是，需要额外配置一个1端口的SRS资源。再比如，能力指示信息中对应第五码字组的比特位指示为0，或者，能力指示信息中指示第五码字组中的零个码字，表明该第五码字组中的码字均不能支持满功率传输，其中，第五码字组是上行传输最大4天线端口时用于rank＝2的情况下指示天线端口选择的码字，则上述能力指示信息指示rank＝2的情况下，需要额外配置至少一个SRS资源，该SRS资源中的SRS端口数小于终端设备可以支持的最大SRS端口数，一种具体的情况是，需要额外配置一个2端口的SRS资源，或者两个1端口的SRS资源。再比如，当能力指示信息中指示
Figure PCTCN2020071531-appb-000119
可以支持满功率传输，则需要额外配置一个1端口的SRS资源，当能力指示信息中指示
Figure PCTCN2020071531-appb-000120
可以支持满功率传输，则不需要额外配置一个1端口的SRS资源；或者，当能力指示信息中指示
Figure PCTCN2020071531-appb-000121
可以支持满功率传输，则不需要额外配置一个1端口的SRS资源，也就是说，终端不需要配置多个不同端口的SRS 资源；当能力指示信息中指示
Figure PCTCN2020071531-appb-000122
可以支持满功率传输，则需要额外配置一个1端口的SRS资源，也就是说，终端需要配置多个不同端口的SRS资源，可选的，该多个不同端口的SRS资源位于同一个SRS资源集合内；或者，当能力指示信息中指示
Figure PCTCN2020071531-appb-000123
和
Figure PCTCN2020071531-appb-000124
均不可以支持满功率传输，则需要额外配置一个1端口的SRS资源，否则不需要额外配置一个1端口的SRS资源，也就是说，终端不需要配置多个不同端口的SRS资源。
下面结合方案一描述相应的功控机制，终端根据其上报的能力指示信息确定用于传输PUSCH的天线端口的实际发送功率，也就是非零天线端口的实际发送功率，此时基站也可以根据终端上报的能力指示信息确定该实际发送功率，从而确定PUSCH的MCS以及TPMI。具体的，一种实现方式是，当终端上报支持满功率传输的码字被DCI指示时，该DCI调度的PUSCH采用满功率传输，即PUSCH的发送功率为信道发送功率。
可选的，基站配置一个码本集合，并规定其中部分码字被DCI指示时，PUSCH采用满功率传输，否则采用非满功率传输，即PUSCH的发送功率为信道发送功率乘以功率缩减因子。所述码字集合的具体确定方式：
对于2天线的情况，当终端上报其支持
Figure PCTCN2020071531-appb-000125
和
Figure PCTCN2020071531-appb-000126
用于满功率传输时，所述码字集合包括：
Figure PCTCN2020071531-appb-000127
或者，
Figure PCTCN2020071531-appb-000128
当该集合内的码字被DCI指示时，PUSCH采用满功率传输；或者，
Figure PCTCN2020071531-appb-000129
当该集合内
Figure PCTCN2020071531-appb-000130
被DCI指示时，PUSCH采用满功率传输，否则采用非满功率传输。
当终端上报其支持
Figure PCTCN2020071531-appb-000131
或者
Figure PCTCN2020071531-appb-000132
用于满功率传输时，以
Figure PCTCN2020071531-appb-000133
为例，所述码字集合包括：
Figure PCTCN2020071531-appb-000134
当
Figure PCTCN2020071531-appb-000135
被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输；或者，所述码字集合包括：
Figure PCTCN2020071531-appb-000136
或者
Figure PCTCN2020071531-appb-000137
当
Figure PCTCN2020071531-appb-000138
被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输；
当终端上报其不支持
Figure PCTCN2020071531-appb-000139
或者
Figure PCTCN2020071531-appb-000140
用于满功率传输时，所述码字集合包括：
Figure PCTCN2020071531-appb-000141
当
Figure PCTCN2020071531-appb-000142
被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输。
对于4天线的情况，当终端上报其支持第一码字组中全部码字用于满功率传输，则码字集合包括：
Figure PCTCN2020071531-appb-000143
或者
Figure PCTCN2020071531-appb-000144
当
Figure PCTCN2020071531-appb-000145
被DCI指示，则相应PUSCH采用满功率传输，否则，采用非满功率传输。当终端上报其第一码字组中部分码字用于满功率传输，则，以终端上报
Figure PCTCN2020071531-appb-000146
用于满功率传输为例，码字集合包括：
Figure PCTCN2020071531-appb-000147
当
Figure PCTCN2020071531-appb-000148
被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输，或者，码字集合包括
Figure PCTCN2020071531-appb-000149
当
Figure PCTCN2020071531-appb-000150
被DCI指示，则相应PUSCH采用满功率传输，否则，采用非满功率传输。其余的码字组同理，也就是说，当终端上报本申请中其余码字组中部分码字用于满功率传输，当这些码字被DCI指示，则PUSCH采用满功率传输，否则采用非满功率传输。可选的，基站配置一个或者多个SRS资源，该SRS资源的天线端口数少于终端支持的最大天线端口数。比如，当一个支持2天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数为1的SRS资源，则基站可以基于该能力指示信息配置一个1天线端口的SRS资源，当DCI中指示该1端口的SRS资源时，表明采用满功率传输相应PUSCH，即PUSCH采用信道发送功率。
当一个支持4天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数少于最大天线端口数的SRS资源，例如为2，则基站可以基于该能力指示信息配置一个2天线端口的SRS资源，终端在该2天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该2端口的SRS资源且TPMI指示为
Figure PCTCN2020071531-appb-000151
或
Figure PCTCN2020071531-appb-000152
时，表明采用满功率传输相应PUSCH，即PUSCH采用信道发送功率，且PUSCH的层数为1，若指示的TPMI为
Figure PCTCN2020071531-appb-000153
则PUSCH采用满功率传输，且PUSCH的层数为2；或者基站可以基于该能力指示信息配置一个或者多个1天线端口的SRS资源，终端在该一个或者多个1天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该一个或者多个1天线端口的 SRS资源，表明采用满功率传输相应PUSCH，若指示一个1天线端口的SRS资源，表明该PUSCH为1层传输，若指示两个1天线端口的SRS资源，表明该PUSCH为2层传输。结合能力指示信息，基站可以确定是否需要配置上述SRS资源以及SRS资源个数和端口数，具体为：对于最大4天线端口的终端设备，当其上报支持满功率传输能力，但不支持采用任意一个第一码字组支持满功率传输时，表明需要基站额外配置一个1端口或者2端口的SRS资源；或者，当终端通过能力指示信息上报其支持第一码字组中的某一个特定的码字，表明需要基站额外配置一个1端口或者2端口的SRS资源，特定的码字可以为
Figure PCTCN2020071531-appb-000154
或者
Figure PCTCN2020071531-appb-000155
上述上报方式可以对应终端设备不具备支持最大发送功率的PA。再比如，终端可以通过能力指示信息上报
Figure PCTCN2020071531-appb-000156
或
Figure PCTCN2020071531-appb-000157
和/或，
Figure PCTCN2020071531-appb-000158
或
Figure PCTCN2020071531-appb-000159
和/或，
Figure PCTCN2020071531-appb-000160
或
Figure PCTCN2020071531-appb-000161
同时，该信息还表明，终端不需要配置多个不同端口的SRS资源。上述上报方式可以对应终端设备具备至少一个支持最大发送功率的PA。
可选的，能力指示信息中还包括一个单独的比特位指示终端是否支持满功率传输。当终端通过该比特位上报其支持满功率传输，则表明任意属于其相干能力的码字均可以用于支持满功率传输，且不需要配置不同SRS端口的SRS资源。
可选的，当终端通过能力指示信息上报其不支持采用任意一个第五码字组支持满功率传输机制，或者当终端通过能力指示信息上报其支持第五码字组中的特定码字，该特定码字可以为，
Figure PCTCN2020071531-appb-000162
或
Figure PCTCN2020071531-appb-000163
则表明需要额外配置一个1或2端口的SRS资源，也就是说，需要配置至少两个SRS资源的端口数不同。否则，当终端通过能力指示信息上报其支持第五码字组中的一个或者多个码字时，则表明不需要额外配置SRS资源，或者是不需要配置至少两个SRS资源的端口数不同；或者，当终端上报其支持第五码字组中除
Figure PCTCN2020071531-appb-000164
或
Figure PCTCN2020071531-appb-000165
之外的一个或者多个码字时，则表明不需要额外配置SRS资源，或者是不需要配置至少两个SRS资源的端口数不同。上述特定码字是示例性的，也可以是
Figure PCTCN2020071531-appb-000166
或者，
Figure PCTCN2020071531-appb-000167
可选的，对于部分相干能力的终端，能力指示信息中当第五码字组中的任意一个码字均不能支持满功率传输，或者仅当第五码字组中的特定码字，比如
Figure PCTCN2020071531-appb-000168
或
Figure PCTCN2020071531-appb-000169
支持满功率传输，则表明终端不能通过
Figure PCTCN2020071531-appb-000170
或
Figure PCTCN2020071531-appb-000171
和
Figure PCTCN2020071531-appb-000172
或
Figure PCTCN2020071531-appb-000173
支持满功率。若终端上报的能力指示信息中支持满功率传输的第五码字组中的全部码字对应非零端口数小于4，则表明终端可以通过
Figure PCTCN2020071531-appb-000174
或
Figure PCTCN2020071531-appb-000175
或者，
Figure PCTCN2020071531-appb-000176
或
Figure PCTCN2020071531-appb-000177
支持满功率传输。若终端上报的能力指示信息中支持满功率传输的第五码字组中的全部码字对应非零端口数为4，则表明终端可以通过
Figure PCTCN2020071531-appb-000178
或
Figure PCTCN2020071531-appb-000179
且
Figure PCTCN2020071531-appb-000180
或
Figure PCTCN2020071531-appb-000181
支持满功率传输。
可选的，部分相干能力的终端和非相干能力的终端的能力指示信息的比特数相同；或者，部分相干能力的终端和非相干能力的终端的能力指示信息中每个比特对应的码字集合相同。
可选的，基站在一个SRS资源集合中配置多个SRS资源的端口数不同，其中，多个SRS资源可以包括一个等于终端指示的最大天线端口数的SRS资源；还可以包括一个小于终端指示的最大天线端口数的SRS资源，或者，包括多个小于终端指示的最大天线端口数的SRS资源。
可选的，当能力指示信息中上报的码字被指示时，表明当前PUSCH的传输采用满功率传输，此时，功率缩减因子为1；和/或，端口数小于最大天线端口数的SRS资源被指示时，则表明当前PUSCH的传输采用满功率传输；和/或，当一个SRS资源集合的多个SRS资源中端口数较小的SRS资源被指示时，则表明当前PUSCH的传输采用满功率传输，此时，功率缩减因子为1，或者为n/M。
可选的，该能力指示信息用于指示在特定的最大传输秩rank取值下，需要额外配置的参考信号SRS的端口数，最大rank指的是当前数据传输采用的最大传输层数或者流数，也就是DCI中指示的rank或者指示的DMRS端口数或者指示的预编码矩阵中的列数的最大值，最大rank可以是终端通过一个能力上报信息指示的值，也可以是基站通过高层信令配置的值。其中，需要额外配置的SRS(标记为第二SRS资源)是除终端能支持的最大天 线端口数之外(标记为第一SRS资源)，还需要配置的SRS端口数，该第一SRS资源的端口数为可以配置为终端上报的一个SRS资源内最大的端口数，或者终端配置的天线数，或者终端支持的最大传输层数。该第二SRS资源可以包括一个或者多个SRS资源。具体的，对于2Tx终端，可以上报支持该第二SRS资源的端口数为0或1，或者，可以上报是否支持配置该第二SRS资源，或者，可以上报是否支持在一个SRS资源组内配置不同端口的SRS资源，比如配置一个1端口的SRS资源以及一个2端口的SRS资源，或者两个1端口的SRS资源。对于4Tx终端，可以上报支持该第二SRS资源的端口数为1和/或2和/或3，即，上报的SRS资源的端口数取值小于终端可以支持的最大天线端口数。比如，仅上报支持第二SRS资源的端口数为1，表明对于(最大)rank为1的PUSCH传输，需要配置不同SRS端口数的SRS资源，再比如，上报支持第二SRS资源的端口数为1和2，表明对于(最大)rank为1或者2的PUSCH传输，均需要配置不同SRS端口数的SRS资源，再比如，上报支持第二SRS资源的端口数为2，表明对于(最大)rank为1的PUSCH传输，不需要配置不同SRS端口数的SRS资源，而对于(最大)rank为2的PUSCH传输，需要配置不同SRS端口数的SRS资源。
可选的，该能力指示信息用于指示在最大传输秩rank取值为x时，是否支持配置多个不同端口数的SRS资源，其中，所述x的取值为1、2、3中的一个或者多个；
可选的，x的取值可以是1、2、3中的一个或者多个，即终端设备可以仅上报最大rank＝1下的SRS端口数，或者分别上报最大rank＝1和最大rank＝2下的SRS端口数。
可选的，所述x的取值为{1}和/或{2}和/或{3}，即终端设备可以上报最大rank＝1下的SRS端口数或者最大rank＝2下的SRS端口数或者最大rank＝3下的SRS端口数。
可选的，终端设备可以上报最大rank组合下的SRS端口数。具体的，x的取值可以为{1,2}，即表示最大rank＝1和最大rank＝2下SRS端口数，即终端设备可以仅上报最大rank＝1和最大rank＝2下SRS端口数，或者上报最大rank＝1和最大rank＝2下SRS端口数，同时上报最大rank＝3下SRS端口数；或者x的取值可以为{2,3}，即表示最大rank＝2和最大rank＝3下SRS端口数，即终端设备可以仅上报最大rank＝2和最大rank＝3下SRS端口数，或者上报最大rank＝2和最大rank＝3下SRS端口数，同时上报最大rank＝1下SRS端口数。
可选的，该SRS的端口数为一个SRS资源内的端口数，或者为一个SRS资源集合内的端口数，该SRS资源集合的用于上行码本传输。
可选的，该SRS资源或者SRS资源集合专门用于满功率传输机制，即基站可以同时配置SRS资源的端口数为终端能支持的最大端口数，同时配置另一个SRS资源的端口数为该能力指示信息指示的SRS端口数。该SRS资源或者SRS资源集合可以携带高层信令配置的功能信息，指示用于满功率传输机制，或者该SRS资源或者SRS资源集合对应的功率缩减因子的取值不为上述取值3，或者计算方式不为上述计算方式3。
结合方案二的功控机制为：
基站配置一个或者多个SRS资源，该SRS资源的天线端口数少于终端支持的最大天线端口数。比如，当一个支持2天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数为1的SRS资源，则基站可以基于该能力指示信息配置一个1天线端口的SRS资源，当DCI中指示该1端口的SRS资源时，表明采用满功率传输相应PUSCH，即PUSCH采用信道发送功率。
当一个支持4天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数少于最大天线端口数的SRS资源，例如为2，则基站可以基于该能力指示信息配置一个2 天线端口的SRS资源，终端在该2天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该2端口的SRS资源且TPMI指示为
Figure PCTCN2020071531-appb-000182
或
Figure PCTCN2020071531-appb-000183
时，表明采用满功率传输相应PUSCH且传输层数为1，即PUSCH采用信道发送功率，当DCI中指示该2端口的SRS资源且TPMI指示为
Figure PCTCN2020071531-appb-000184
时，表明采用满功率传输相应PUSCH且传输层数为2，即PUSCH采用信道发送功率，且每个端口均分该信道发送功率；或者基站可以基于该能力指示信息配置一个或者多个1天线端口的SRS资源，终端在该一个或者多个1天线端口的SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该一个或者多个1天线端口的SRS资源，表明采用满功率传输相应PUSCH，若指示一个1天线端口的SRS资源，表明该PUSCH为1层传输，若指示两个1天线端口的SRS资源，表明该PUSCH为2层传输。结合能力指示信息，基站可以确定是否需要配置上述SRS资源以及SRS资源个数和端口数。
可选的，当一个支持4天线端口的终端设备通过能力指示信息上报其需要额外配置天线端口数少于最大天线端口数的SRS资源，例如为2，则基站可以基于该能力指示信息配置2个1天线端口的SRS资源，终端在这2个SRS资源上发送经过虚拟化的SRS端口，当DCI中指示该2个1天线端口的SRS资源中的一个时，表明采用满功率传输相应PUSCH且传输层数为1，即PUSCH采用信道发送功率，当DCI中同时指示该2个SRS资源，表明采用满功率传输相应PUSCH且传输层数为2，即PUSCH采用信道发送功率，且每个端口均分该信道发送功率。
可选的，该能力指示信息用于指示在特定的传输秩rank取值下，功率缩减因子的取值，或者功率缩减因子的计算方式，如上述取值1-3或者计算方式1-3所述。传输秩rank指示的当前数据传输采用的传输层数或者流数，终端可以根据DCI中指示的rank或者指示的DMRS端口数或者指示的预编码矩阵中的列数确定当前数据的rank。
可选的，x的取值可以是1、2、3中的一个或者多个，即终端设备可以仅上报rank＝1下的功率缩减因子的取值或者功率缩减因子的计算方式，或者分别上报rank＝1和rank＝2下功率缩减因子的取值或者功率缩减因子的计算方式。
可选的，所述x的取值为{1}和/或{2}和/或{3}，即终端设备可以上报rank＝1下的功率缩减因子的取值或者功率缩减因子的计算方式，或者rank＝2下的功率缩减因子的取值或者功率缩减因子的计算方式，或者rank＝3下的功率缩减因子的取值或者功率缩减因子的计算方式。
可选的，终端设备可以上报rank组合下的功率缩减因子的取值或者功率缩减因子的计算方式。具体的，x的取值可以为{1,2}，即表示rank＝1和rank＝2下功率缩减因子的取值或者功率缩减因子的计算方式，即终端设备可以仅上报rank＝1和rank＝2下功率缩减因子的取值或者功率缩减因子的计算方式，或者上报rank＝1和rank＝2下功率缩减因子的取值或者功率缩减因子的计算方式，同时上报rank＝3下功率缩减因子的取值或者功率缩减因子的计算方式；或者x的取值可以为{2,3}，即表示rank＝2和rank＝3下功率缩减因子的取值或者功率缩减因子的计算方式，即终端设备可以仅上报rank＝2和rank＝3下功率缩减因子的取值或者功率缩减因子的计算方式，或者上报rank＝2和rank＝3下功率缩减因子的取值或者功率缩减因子的计算方式，同时上报rank＝1下功率缩减因子的取值或者功率缩减因子的计算方式。
可选的，该功率缩减因子的取值或者功率缩减因子的计算方式仅当基站通过高层信令 或者DCI指示启用之后才可以采用。
可选的，该能力指示信息用于指示在特定的传输秩rank取值下，第一码字是否可以支持功率缩减因子＝1，或者第一码字是否可以支持满功率传输机制。具体的，该第一码字为该特定的传输秩rank下的全部码字，进一步的，该第一码字可以为终端所能支持的相干能力下的全部码字。传输秩rank指示的当前数据传输采用的传输层数或者流数，终端可以根据DCI中指示的rank或者指示的DMRS端口数或者指示的预编码矩阵中的列数确定当前数据的rank。
可选的，该第一码字可以为终端所能支持的相干能力下的一种相干能力的全部码字分别。
可选的，x的取值可以是1、2、3中的一个或者多个，即终端设备可以仅上报rank＝1下的功率缩减因子是否等于1，或者分别上报rank＝1和rank＝2下是否等于1。
可选的，所述x的取值为{1}和/或{2}和/或{3}，即终端设备可以上报rank＝1下的功率缩减因子是否等于1，或者rank＝2下的功率缩减因子是否等于1，或者rank＝3下的功率缩减因子是否等于1。
可选的，终端设备可以上报rank组合下的功率缩减因子是否等于1。具体的，x的取值可以为{1,2}，即表示rank＝1和rank＝2下功率缩减因子是否等于1，即终端设备可以仅上报rank＝1和rank＝2下功率缩减因子是否等于1，或者上报rank＝1和rank＝2下功率缩减因子是否等于1，同时上报rank＝3下功率缩减因子是否等于1；或者x的取值可以为{2,3}，即表示rank＝2和rank＝3下功率缩减因子是否等于1，即终端设备可以仅上报rank＝2和rank＝3下功率缩减因子是否等于1，或者上报rank＝2和rank＝3下功率缩减因子是否等于1，同时上报rank＝1下功率缩减因子是否等于1。
可选的，该功率缩减因子是否等于1仅当基站通过高层信令或者DCI指示启用之后才可以采用。
例如图9所示的终端天线形态，在rank＝1下，功率缩减因子的取值或者计算方式为2或者3，即当DCI指示码字
Figure PCTCN2020071531-appb-000185
或者
Figure PCTCN2020071531-appb-000186
或者
Figure PCTCN2020071531-appb-000187
或者
Figure PCTCN2020071531-appb-000188
时，由于该终端的PA均不能达到传输功率为23dBm，则rank＝1应当上报功率缩减因子取值为2或3，然而对于任意rank＝2的码字该终端可以采用任意两个或者四个PA达到传输功率为23dBm，则rank＝2应当上报功率缩减因子取值为1。
可选的，终端通过该能力指示信息，对于不同的码字类型分别上报功率缩减因子的取值。
可选的，终端通过该能力指示信息分别上报部分相干类型的码字对应的功率缩减因子以及非相干类型的码字对应的功率缩减因子。比如上报部分相干码字的功率缩减因子为1，而上报非相干码字的功率缩减因子为1/N，或者，上报部分相干码字和非相干码字的功率缩减因子均为1。
可选的，对于不同的rank，分别上报功率缩减因子的取值和一个或多个码字。比如，对于rank等于1，功率缩减因子为1且同时上报支持满功率传输的码字，对于rank等于2，直接上报功率缩减因子为1或者1/N。同时，协议中规定，当功率缩减因子为1时，预定 义该rank下一个特定码字用于满功率传输，比如对于2Tx的终端，
Figure PCTCN2020071531-appb-000189
或
Figure PCTCN2020071531-appb-000190
用于支持rank为1的PUSCH满功率传输，对于4Tx的终端，
Figure PCTCN2020071531-appb-000191
或
Figure PCTCN2020071531-appb-000192
用于支持rank为1的PUSCH满功率传输，
Figure PCTCN2020071531-appb-000193
或
Figure PCTCN2020071531-appb-000194
用于支持rank为2的PUSCH满功率传输，
Figure PCTCN2020071531-appb-000195
或
Figure PCTCN2020071531-appb-000196
用于支持rank为3的PUSCH满功率传输。
可选的，对于不同的码字类型分别上报SRS端口数，码字类型为非相干码字或者部分相干码字。
可选的，对于不同的rank，分别上报SRS端口数和一个或多个码字。比如，对于rank等于1，上报不支持配置不同端口的SRS资源配置(或者上报支持额外配置一个端口数少的SRS资源)且同时上报支持满功率传输的码字，或者上报支持配置不同端口的SRS资源配置。对于rank等于2或者3，上报不支持配置不同端口的SRS资源配置，或者上报支持配置不同端口的SRS资源配置，当终端上报不支持配置不同端口的SRS资源配置时，预定义相应rank下一个特定码字用于满功率传输，比如对于2Tx的终端，
Figure PCTCN2020071531-appb-000197
或
Figure PCTCN2020071531-appb-000198
用于支持rank为1的PUSCH满功率传输，对于4Tx的终端，
Figure PCTCN2020071531-appb-000199
或
Figure PCTCN2020071531-appb-000200
用于支持rank为1的PUSCH满功率传输，
Figure PCTCN2020071531-appb-000201
或
Figure PCTCN2020071531-appb-000202
用于支持rank为2的PUSCH满功率传输，
Figure PCTCN2020071531-appb-000203
或
Figure PCTCN2020071531-appb-000204
用于支持rank为3的PUSCH满功率传输。
可选的，在S202之后还可能执行以下过程。
对于终端侧，终端可以确定信道发送功率。
该信道发送功率为n个非零天线端口的发送功率，也就是信道发送功率实际上为n非零天线端口的发送功率之和。信道发送功率小于或等于P，其中，P的值为最大发送功率， 即终端分配的上行信道的最大发送功率。这里的信道发送功率的具体解释如上文中所述，在此不再赘述。
n个非零天线端口与所述矩阵中的n行一一对应，该n行的每一行中均包含一个或多个非零元素。
终端还可以根据第一码字确定每个非零天线端口的发送功率。
其中，终端可以将信道发送功率平均分配给n个非零天线端口上，零天线端口上的发送功率相应的为零。在一个可选的实施例中，当无法实现完全平均的时候，例如按照平分的方式计算出来的值不是整数或无需过于精确的完全平均时，可以求平均后通过四舍五入或者上/下取整的方式来分配功率。
应理解，这里的分配功率的过程可以是一个确定的过程，即确定出各个非零天线端口的发送功率。确定可以是确定部分天线端口，也可以是全部非零天线端口。一个实施例中，分配的功率可以直接是端口最终的发送功率、也可以是一个功率等级或者拟发送的功率值，在发送的时候依据该功率等级或拟发送功率值发送信号。
对于网络设备侧，网络设备确定第一数据的功率缩减因子为1。网络设备向所述终端发送下行控制信息DCI；其中，所述DCI用于调度所述第一数据，所述第一数据采用的码字为所述能力指示信息的第一比特位取值为1且所述第一比特位对应的一个或者一组码字中的码字。
或者，网络设备可以根据第一码字，发送下行控制信息。
该下行控制信息可以用于指示上行传输码字，例如指示TPMI索引。
本申请中，假设终端被配置的天线端口的总数用M表示。M为2的整数次幂，矩阵中的行数A与配置的天线端口M的关系可以为：A≤M。当然非零天线端口的数量n与M的关系为：n≤M。
实际应用中终端可能会使用M个天线端口的部分或全部来发送上行数据，实际中用于发送上行数据的天线端口即上述非零天线端口。
终端在确定每个非零天线端口的发送功率之后，基于确定的每个天线端口上的发送功率，向网络设备发送上行信号，本申请中的上行信号也可以叫做上行数据，或者上行信号包括上行数据，例如上行信号承载在PUSCH。网络设备从终端接收上行信号。
以下介绍一下终端如何获取或确定第一码字。根据第一码字的行列数不同，终端可以从不同的码本中选择码字。一种可能的实现方式中，终端从现有的TPMI码本中选择第一码字。例如，如上述表1到表7所示的码本中选择。这样能够保持现有TPMI指示的灵活度。下面按照矩阵的行列数，从以下几种实现方式来详细说明。
1、A＝2，N＝1，M＝2或M＝4。
矩阵为2行1列，适用于天线端口数为2或4的终端。
可以从第一码本中确定该第一码字。具体的从第一码本中选择一个现有的码字来作为第一码字。第一码本包含的码字需符合以下特征。第一码本包括第二码字和/或第三码字。第二码字表征的非零天线端口数量为1，第三码字表征的非零天线端口的数量为2。例如，第一码本为表1所示的码本。第二码字为表1所示码本中TPMI索引值为0或1的码字。第三码字为表1所示码本中TPMI索引值为2～5中的码字。本申请中仅是描述了第一码本中包括的第二码字和第三码字符合的特征，并没有限定第二码字的个数和第三码字的个数。例如，第一码本中可以包括多个第二码字和多个第三码字。
2、A＝4，N＝1，M＝4。
矩阵为4行1列，适用于天线端口数为4的终端。
可以从第二码本中确定该第一码字。具体的从第二码本中选择一个现有的码字来作为第一码字。第二码本包含的码字需符合以下特征。第二码本包括第四码字、第五码字和/或第六码字。第四码字表征的非零天线端口的数量为1，第五码字表征的非零天线端口的数量为2，第六码字表征的非零天线端口的数量为4。例如，第二码本为表3所示的码本。第四码字为表3所示码本中TPMI索引值为0～3的任意码字。第五码字为表3所示码本中TPMI索引值为4～11中任意的码字。第六码字为表3所示码本中TPMI索引值为12～27中任意的码字。本申请中仅是描述了第二码本中包括的第四码字、第五码字和第六码字符合的特征，并没有限定码字的个数。例如，第二码本中可以包括多个第四码字、多个第五码字和多个第六码字。
3、A＝4，N＝2，M＝4。
矩阵为4行2列，适用于天线端口数为4的终端。
可以从第三码本中确定该第一码字。具体的从第三码本中选择一个现有的码字来作为第一码字。第三码本包含的码字需符合以下特征。第三码本包括第七码字、第八码字和/或第九码字。第七码字表征的非零天线端口的数量为2，第八码字表征的非零天线端口的数量为4且第八码字的非零元素的数量为4。第九码字表征的非零天线端口的数量为4且第九码字的非零元素的数量大于4(例如8)。例如，第三码本为表5所示的码本。第七码字为表5所示码本中TPMI索引值为0～5的任意码字。第八码字为表5所示码本中TPMI索引值为6～13中任意的码字。第九码字为表5所示码本中TPMI索引值为14～21中任意的码字。本申请中仅是描述了第三码本中包括的第七码字、第八码字和第九码字符合的特征，并没有限定码字的个数。例如，第三码本中可以包括多个第七码字、多个第八码字和多个第九码字。
4、A＝4，N＝3，M＝4。
矩阵为4行3列，适用于天线端口数为4的终端。
可以从第四码本中确定该第一码字。具体的从第四码本中选择一个现有的码字来作为第一码字。第四码本包含的码字需符合以下特征。第四码本包括第十码字和/或第十一码字。第十码字表征的非零天线端口的数量为3，第十一码字表征的非零天线端口的数量为4且第十一码字的非零元素的数量为4。或者，第十一码字表征的非零天线端口的数量为4且第十一码字的非零元素的数量大于4(例如8)。例如，第四码本为表6所示的码本。第十码字为表6所示码本中TPMI索引值为0的码字。第十一码字为表6所示码本中TPMI索引值为1～6中任意的码字。本申请中仅是描述了第四码本中包括的第十码字和第十一码字符合的特征，并没有限定码字的个数。例如，第四码本中可以包括多个第十码字和多个第十一码字。
5、A＝2，N＝2，M＝4。
矩阵为2行2列，适用于天线端口数为4的终端。
可以从第五码本中确定该第一码字。具体的从第五码本中选择一个现有的码字来作为第一码字。第五码本包含的码字需符合以下特征。第五码本包括第十二码字和/或第十三码字。第十二码字表征的非零天线端口的数量为2且第十二码字的非零元素的数量为2。第十三码字表征的非零天线端口的数量为2且第十三码字的非零元素的数量大于2(例如4)。 例如，第五码本为表2所示的码本。第十二码字为表2所示码本中TPMI索引值为0的码字。第十三码字为表2所示码本中TPMI索引值为1～2中任意的码字。本申请中仅是描述了第五码本中包括的第十二码字和第十三码字符合的特征，并没有限定码字的个数。例如，第五码本中可以包括多个第十二码字和多个第十三码字。
在第5种实现方式中，或者，在第1种实现方式的A＝2，N＝1，M＝4的情况下，终端还需要向网络设备发送(M/2)个天线端口的参考信号，(M/2)即2。网络设备根据(M/2)个天线端口的参考信号来确定下行控制信息。可选的，在协议中定义(M/2)个天线端口的参考信号的资源为用于实现设定功控模式的信道测量。该设定功控模式即满功率发送机制，在设定功控模式下信道发送功率的取值为小于或等于P。网络设备可以根据(M/2)个天线端口的参考信号，确定下行控制方式，即确定TPMI指示以及MCS测量。
在一个可能的设计中，可以将第一码字加入到上述相应的码本中，例如，第一码本～第五码本。可选的，可以在原来码本的基础上增加一个码字条目即增加第一码字，相应的，在DCI中增加一个第一码字的状态值。或者可选的，可以将原来码本中的指定索引的码字设置为第一码字，该指定索引原始码字去掉。相应的，DCI中指示该指定索引的码字的状态值用来指示该第一码字。
当网络设备向终端发送的下行控制信息用于指示第一码字时，意味着网络设备启用满功率传输机制，终端可以将信道发送功率不进行缩减，按照第一码字将信道发送功率分配到各个非零天线端口上。当然，在实现满功率传输机制时，网络设备也可以指示码本中的除第一码字之外的码字。终端可以将信道发送功率不进行缩减，按照指示的码字将信道发送功率分配到各个非零天线端口上。
以下对上述方法的可选实现方式做进一步详细描述。假设终端的天线端口数量用M表示，上行传输的数据层数为N或P表示，P＝N。
首先，能力指示信息所指示的码字可以是一个矩阵，矩阵的行列数跟终端的天线端口数和数据层数有关。例如，矩阵的大小可以为M*N，记为第一矩阵；矩阵的大小也可以为(M/2)*P，记为第二矩阵。
第一矩阵中的M行与M个天线端口一一对应，第一矩阵中的N列与上行数据传输的N个数据层一一对应。第二矩阵的(M/2)行中的一行对应1个天线端口或2个天线端口，第二矩阵中的P列与上行数据传输的P个数据层一一对应。
在一种可能的实现方式中，第一矩阵和第二矩阵可以由上文中所描述的码本中确定。参见上文所述，码本中包括多个码字，码字用于指示各个发送端口的预编码方式。本申请中，从码本中选择一个码字作为终端的功能参数。可选的，终端发送的能力指示信息可以是TPMI索引值，也可以直接用码字作为能力指示信息。在上行传输之前，终端向网络设备发送终端的能力信息，其中一项能力信息就是终端发送的该能力指示信息。
由于能力指示信息指示的码字的含义与传统码本中的码字的含义(或功能)不同，因此需要对码本进行更新或修改。可选方式一：在现有码本中加入一个码字条目，例如，在表1中加入TPMI索引值6，该TPMI索引值6对应新加入的码字条目。网络设备会在DCI中加入一个状态值对应指示该新增加的码字条目。当网络设备向终端下发的DCI中指示该状态值时，表明网络设备启用满功率传输机制。终端接收到DCI，根据DCI指示的该状态值，确认使用满功率传输机制。终端不进行功率缩减，而直接将确认的信道发送功率分配到第一矩阵或第二矩阵中非零元素指示的天线端口上。在现有码本中加入码字的方法，可 以不改变现有TPMI指示的灵活度。
可选方式二：将现有码本中的某个码字替换为能力指示信息所指示的码字。例如，固定将TPMI索引值最低的码字替换为能力指示信息所指示的码字。例如，将表1中的TPMI0对应的码字更换为能力指示信息所指示的码字。网络设备还是采用原始码本中TPMI0的状态值来指示该能力指示信息所指示的码字。当网络设备向终端下发的DCI中指示该状态值时，表明网络设备启用满功率传输机制。终端接收到DCI，根据DCI指示的该状态值，确认使用满功率传输机制。终端不进行功率缩减，而直接将确认的信道发送功率分配到第一矩阵或第二矩阵中非零元素指示的天线端口上。方式二能够不增加DCI信令的开销。
可选方式三：不改变现有的码本结构，直接定义功控机制为，当DCI指示某个指定的码字(例如TPMI索引值最低的码字)对应的状态值时，表明网络设备启用满功率传输机制。终端接收到DCI，根据DCI指示的该状态值，确认使用满功率传输机制。终端不进行功率缩减，而直接将确认的信道发送功率分配到第一矩阵或第二矩阵中非零元素指示的天线端口上。当DCI指示除了该某个指定的码字对应的状态值之外的状态值时，表明网络设备不启用满功率传输机制。即终端确定信道发送功率后，将信道发送功率进行缩减(乘以功率缩减因子)后再分配到非零元素指示的天线端口上。这种方式中，终端上报的码字或者TPMI索引值仅表征了终端支持满功率的实现行为。
接下来对终端如何根据码字分配信道发送功率的可选方式进行详细说明。
终端将信道发送功率分配到第一矩阵中非零元素所指示的天线端口上，并确定第一矩阵中0元素所指示的天线端口上的发送功率为零。其中，若第一矩阵中包括多个非零元素，终端可以将信道发送功率平分给第一矩阵中非零元素所指示的天线端口上。
其中，终端上行传输层数可能有一层或多层，第一矩阵中的列数N可能为1或大于1的整数。在第一矩阵中，若N＝1，那么：一列中若包括一个非零元素(即非零行元素)，则终端将信道发送功率分配给该非零元素对应的天线端口，在该非零元素对应的天线端口上发送上行数据；一列中若包括多个非零元素(即非零行元素)，则终端将信道发送功率平分给该多个非零元素对应的天线端口，采用该多个非零元素对应的多个天线端口虚拟化的方式，发送上行数据。若N大于1，那么：在N列中的任意一列中若均包括一个非零元素，则终端将信道发送功率平分给N个非零元素对应的N个天线端口上，在一个数据层上采用1/N倍的信道发送功率，发送上行数据；若在N列中的任意一列总均包括多个非零元素，则在每一个数据层上，将1/N倍的信道发送功率平分给该多个非零元素，采用该多个非零元素对应的多个天线端口虚拟化的方式，发送上行数据。
下面结合具体的应用场景对终端根据码字分配信道发送功率的可选方式做进一步详细说明。
终端的天线端口根据PA的能力具有最大发送功率，终端不是每个天线端口的最大发送功率都可以支持信道发送功率。当终端的天线端口的最大发送功率不大于信道发送功率时，终端可以采用多个天线端口虚拟化的方式来达到信道发送功率。
以表8中终端的功率级别为级别3为例，不考虑耐受值的情况下，终端的功率级别为23dBm。比如，在考虑耐受值(+3)的情况下，终端的功率级别调整为26dBm。假设终端的信道发送功率确定为P，可选的，P为23dBm或者调整后的26dBm。在以下举例中，均以不考虑耐受值的情况下为例。以下举例终端的天线端口数量为2和4时的天线形态。终端支持2天线端口时的2个天线端口分别用端口0和端口1来表示，终端支持4天线端口 时的4个天线端口分别用端口0、端口1、端口2和端口3表示。端口支持最大发送功率包括17dBm、20dBm或23dBm。支持最大发送功率为17dBm的端口可以发送的功率为P/4；支持最大发送功率为20dBm的端口可以发送的功率为P/2；支持最大发送功率为23dBm的端口可以发送的功率为P。
图3～图5表示了2天线端口的终端可以支持的天线形态。
如图3所示，端口0和端口1分别支持最大发送功率为20dBm。终端若想指示满功率发送机制，可以通过将2个天线端口虚拟化成一个天线端口的方式达到信道发送功率(23dBm)传输，即采用两个PA同时传输进行功率合并从而达到23dBm传输。
如图4所示，端口0和端口1分别支持最大发送功率为23dBm。终端若想指示满功率发送机制，可以通过任意一个天线端口达到信道发送功率(23dBm)传输。
如图5所示，端口0支持最大发送功率为20dBm，端口1支持最大发送功率为23dBm。终端若想指示满功率发送机制，可以采用端口1达到信道发送功率(23dBm)传输。也可以通过将2个天线端口虚拟化成一个天线端口的方式达到信道发送功率(23dBm)传输，即采用两个PA同时传输进行功率合并从而达到23dBm传输。例如，端口0采用P/2的发送功率，端口1采用P/2的发送功率。
图6～图11表示了4天线端口的终可以支持的天线形态。
如图6所示，端口0支持最大发送功率为23dBm，端口1、端口2和端口3分别支持最大发送功率为17dBm。终端可以采用端口0达到信道发送功率(23dBm)传输。
如图7所示，端口0和端口2分别支持最大发送功率为20dBm。端口1和端口3分别支持最大发送功率为17dBm。
如图8所示，端口0、端口1、端口2和端口3都分别支持最大发送功率为17dBm。
如图9所示，端口0、端口1、端口2和端口3都分别支持最大发送功率为20dBm。
如图10所示，端口0、端口1、端口2和端口3都分别支持最大发送功率为23dBm。
如图11所示，端口0和端口3分别支持最大发送功率为23dBm。端口1和端口3分别支持最大发送功率为17dBm。
为了支持满功率发送，针对上述不同天线形态的终端，可以选择上报的能力指示信息如下所述。
2天线端口传输层数为1层的终端的码本如表1所示，终端可以选择表1中TPMI索引值为0～1中的任意一个，以及TPMI索引值为2～5中的任意一个，作为能力指示信息。
例如，终端可以选择表1中TPMI0：
Figure PCTCN2020071531-appb-000205
或者TPMI2：
Figure PCTCN2020071531-appb-000206
作为能力指示信息，也可以直接上报码字
Figure PCTCN2020071531-appb-000207
或者
Figure PCTCN2020071531-appb-000208
作为能力指示信息。
图4所示的天线形态的终端可以选择表1中TPMI0或TPMI2作为能力指示信息，或者上报码字
Figure PCTCN2020071531-appb-000209
或者
Figure PCTCN2020071531-appb-000210
作为能力指示信息，表示图4所示的天线形态的终端可以采用一个天线端口发送信道发送功率。图5所示的天线形态的终端可以选择表1中TPMI1作为能力指示信息，或者上报
Figure PCTCN2020071531-appb-000211
作为能力指示信息，表示图5所示的天线形态的终端可以采用一个天线端口发送信道发送功率。在这两种情况下，终端将信道发送功率P分配给元素1所指示的一个天线端口上，向网络设备发送数据。网络设备接收到码字后，可以通过一个SRS端口上的信道估计MCS，可以基于一个天线端口选择下行能力指示信息中的TPMI。
图3、图4和图5所示的天线形态的终端均可以选择表1中TPMI索引值为2～5中的任意一个作为能力指示信息。例如，选择TPMI2作为能力指示信息。表示终端通过将2个天线端口虚拟化成一个天线端口的方式达到信道发送功率。在这种情况下，终端将信道功率P平分给两个天线端口，一个天线端口承载P/2的发送功率。网络设备接收到码字后，通过两个SRS端口上的信道估计来确定MCS。
4天线端口传输层数为1层的终端的码本如表3或表4所示。以表3为例，终端可以选择表3中TPMI索引值为0～3中的任意一个、TPMI索引值为4～11中的任意一个，以及TPMI索引值为12～27中的任意一个。分别对应非零天线端口数量为1、2和4。
例如，终端可以选择表3中的TPMI0：
Figure PCTCN2020071531-appb-000212
TPMI4：
Figure PCTCN2020071531-appb-000213
和TPMI13：
Figure PCTCN2020071531-appb-000214
作为能力指示信息。等价的，也可以上报码字
Figure PCTCN2020071531-appb-000215
或者
Figure PCTCN2020071531-appb-000216
或者
Figure PCTCN2020071531-appb-000217
作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。
图6、图10和图11所示的天线形态的终端均可以选择表3中TPMI索引值为0～3中的任意一个作为能力指示信息。例如，选择TPMI0作为能力指示信息。表示终端可以采用一个天线端口发送信道发送功率。在这种情况下，终端将信道发送功率P分配给元素1所指示的一个天线端口上，向网络设备发送数据。网络设备接收到码字后，可以通过一个SRS端口上的信道估计MCS，可以基于一个天线端口选择下行能力指示信息中的TPMI。
图7、图9、图10和图11所示的天线形态的终端均可以选择表3中TPMI索引值为4～11中的任意一个作为能力指示信息。例如，选择TPMI4作为能力指示信息。表示终端通过将2个天线端口虚拟化成一个天线端口的方式达到信道发送功率。在这种情况下，终端将信道功率P平分给两个非零元素指示的两个天线端口，一个天线端口承载P/2的发送功率。网络设备接收到码字后，通过两个SRS端口上的信道估计来确定MCS。
图6～图11所示的天线形态的终端均可以选择表3中TPMI索引值为12～27中的任意一个作为能力指示信息。例如，选择TPMI13作为能力指示信息。表示终端通过将4个天线端口虚拟化成一个天线端口的方式达到信道发送功率。在这种情况下，终端将信道功率P平分给4个天线端口，一个天线端口承载P/4的发送功率。网络设备接收到码字后，通过4个SRS端口上的信道估计来确定MCS。
4天线端口传输层数为2层的终端的码本如表5所示。终端可以选择表5中TPMI索引值为0～5中的任意一个，以及TPMI索引值为6～21中的任意一个。分别对应非零天线端口数量为2和4。
例如，终端可以选择表5中的TPMI1：
Figure PCTCN2020071531-appb-000218
和TPMI6：
Figure PCTCN2020071531-appb-000219
作为能力指示信息。 与上报TPMI1等价的，也可以上报码字
Figure PCTCN2020071531-appb-000220
作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。
图7、图9、图10和图11所示的天线形态的终端均可以选择表5中TPMI索引值为0～5中的任意一个作为能力指示信息。例如，选择TPMI1作为能力指示信息。表示终端在2层中的每一个数据层上，均可以采用一个天线端口发送信道发送功率，则终端将信道发送功率P平分给元素1指示的两个天线端口上，一个天线端口承载P/2的发送功率，向网络设备发送数据。网络设备接收到码字后，通过两个SRS端口上的信道估计来确定MCS。
图6～图11所示的天线形态的终端均可以选择表3中TPMI索引值为6～21中的任意一个作为能力指示信息。例如，选择TPMI6作为能力指示信息。表示终端通过将4个天线端口虚拟化成一个天线端口的方式达到信道发送功率。在这种情况下，终端将信道功率P平分给2个数据层，一个数据层承担P/2的功率，在每个数据层上，将P/2的功率分配给2个天线端口，一个天线端口承载P/4的发送功率。网络设备接收到码字后，通过4个SRS端口上的信道估计来确定MCS。
图6～图11所示的天线形态的终端也可以上报不支持数据层为2层的满功率传输机制。考虑到数据层为2层传输下通过预编码方法避免层间干扰，但非相干的天线之间的相位加权并不精确，所以最优选的做法是，只期望终端上报TPMI索引值为0～5中的任意一个(如TPMI 1)，其余的情况终端上报不支持数据层为2层的满功率机制。
4天线端口传输层数为3层的终端的码本如表6所示。终端可以选择表6中TPMI索引值为0，以及TPMI索引值为1～6中的任意一个。分别对应非零天线端口数量为3和4。
例如，终端可以选择表6中的TPMI0：
Figure PCTCN2020071531-appb-000221
和TPMI1：
Figure PCTCN2020071531-appb-000222
作为能力指示信息。与上报TPMI0等价的，也可以上报码字：
Figure PCTCN2020071531-appb-000223
作为能力指示信息。这两种上报方式的归一化因子或者幅度不同。
图9和图10所示的天线形态的终端均可以选择表6中TPMI索引值为0的码字作为能力指示信息。表示终端在3层中的每一个数据层上，均可以采用一个天线端口发送信道发送功率，则终端将信道发送功率P平分给元素1指示的3个天线端口上，一个天线端口承载P/3的发送功率，向网络设备发送数据。网络设备接收到码字后，通过3个SRS端口上的信道估计来确定MCS。
图6、图7、图8和图11所示的天线形态的终端均可以选择表6中TPMI索引值为1～6中的任意一个为能力指示信息。例如，选择TPMI1作为能力指示信息。终端将信道功率P平分给3个数据层，一个数据层承担P/3的功率，在每个数据层上，终端将P/3的功率平分给非零元素指示的端口上，若一列有多个非零元素，则将多个非零元素的端口虚拟化成 一个端口发送P/3的功率。网络设备接收到码字后，通过4个SRS端口上的信道估计来确定MCS。
图6、图7、图8和图11所示的天线形态的终端也可以上报不支持数据层为3层的满功率传输机制。考虑到数据层为3层传输下通过预编码方法避免层间干扰，但非相干的天线之间的相位加权并不精确，所以最优选的做法是，只期望终端上报TPMI索引值为0的码字，其余的情况终端上报不支持数据层为3层的满功率机制。
可选的，4天线端口的终端还可以使用上述2天线端口上报的能力信息。具体的，终端可以选择表1中TPMI索引值为0～1中的任意一个，以及TPMI索引值为2～5中的任意一个，作为能力指示信息。例如，终端可以选择表1中TPMI0：
Figure PCTCN2020071531-appb-000224
或者TPMI2：
Figure PCTCN2020071531-appb-000225
作为能力指示信息，也可以直接上报码字
Figure PCTCN2020071531-appb-000226
或者
Figure PCTCN2020071531-appb-000227
作为能力指示信息。
图6、图7、图9、图10和图11所示的天线形态的终端可以选择表1中TPMI索引值为0～1中的任意一个作为能力指示信息。网络设备收到该能力指示信息，确定终端采用1个天线端口或2个天线端口虚拟化为一个天线端口的方式来发送信道发送功率。为进一步确定终端采用1个天线端口还是2天线端口虚拟化的方式，网络设备指示终端发送2端口的SRS，其中，2端口的SRS需要基于终端上报的能力指示信息所指示的码字确定其发送方式，协议中会描述该2端口的SRS资源用于满功率传输机制的信道测量。具体的终端发送2端口SRS的方式举例如下：比如图6所示的天线形态的终端如果上报了表1中的TPMI0，则2端口的SRS中端口0用23dBm的PA发送，端口1用任意一个17dBm的PA发送，网络设备基于该2端口SRS的测量确定是否采用端口0传输上行数据；再比如图7所示的天线形态的终端如果上报了TPMI 0，则2端口的SRS中端口0用两个20dBm的PA进行端口虚拟化之后发送，端口1用任意一个17dBm的PA发送，网络设备基于该2端口SRS的测量确定是否采用端口0传输上行数据；再比如图7所示的天线形态的终端如果上报了TPMI 2，则2端口的SRS中端口0和1分别用两个20dBm的PA发送，端口1用任意一个17dBm的PA发送，网络设备基于该2端口SRS的测量确定是否采用端口0传输上行数据。当然，对于图6、图7、图8、图9、图10和图11所示的天线形态的终端可以选择表1中TPMI索引值为2～5中的任意一个作为能力指示信息。根据上述这种4天线端口选择行数为2的矩阵的上报方式，终端能够更进一步隐藏终端的天线形态的实现方式。网络设备通过进一步的测量2端口的SRS，最终能够更准确的确定上行传输的TPMI以及MCS。
基于上述方法实施例的同一构思，如图12所示，本申请实施例还提供一种通信装置1200，通信装置1200用于执行上述通信方法中终端执行的操作，或者用于执行上述通信方法中网络设备执行的操作。该通信装置1200包括处理单元1201和通信单元1202。其中，当通信装置1200用于执行上述通信方法中终端执行的操作时：
通信单元1202，用于发送能力指示信息，所述能力指示信息用于指示第一码字表示为A*N的矩阵，其中，A、N为正整数；
处理单元1201，用于确定信道发送功率，所述信道发送功率为n个非零天线端口的发送功率；
处理单元1201，还用于根据所述第一码字确定所述每个所述非零天线端口的发送功率，其中，所述n个非零天线端口与所述矩阵中的n行一一对应，所述n行的每一行中均包含 一个或多个非零元素，该信道发送功率小于或等于P，其中，P的值为最大发送功率。
可选的，A≤M，n≤M，其中，该M为配置的天线端口的数量，M为2的整数次幂。
该A＝2，该M＝2或该M＝4，该N＝1；
处理单元1201还用于：从第一码本中确定该第一码字；
其中，该第一码本中包括第二码字和/或第三码字，该第二码字表征的非零天线端口数量为1，该第三码字表征的非零天线端口的数量为2。
可选的，该A＝4，该M＝4，该N＝1；
处理单元1201还用于：从第二码本中确定该第一码字；
其中，该第二码本中包括第四码字、第五码字和/或第六码字，该第四码字表征的非零天线端口的数量为1，该第五码字表征的非零天线端口的数量为2，该第六码字表征的非零天线端口的数量为4。
可选的，该A＝4，该M＝4，该N＝2；
处理单元1201还用于：从第三码本中确定该第一码字；
其中，该第三码本中包括第七码字、第八码字和/或第九码字，该第七码字表征的非零天线端口的数量为2；该第八码字表征的非零天线端口的数量为4且该第八码字的非零元素的数量为4，或者，该第九码字表征的非零天线端口的数量为4且该第九码字的非零元素的数量大于4。
可选的，该A＝4，该M＝4，该N＝3；
处理单元1201还用于：从第四码本中确定该第一码字；
其中，该第四码本中包括第十码字和/或第十一码字，该第十码字表征的非零天线端口的数量为3；该第十一码字表征的非零天线端口的数量为4且该第十一码字的非零元素的数量为4，或者，该第十一码字表征的非零天线端口的数量为4且该第十一码字的非零元素的数量大于4。
可选的，该A＝2，该M＝4，该N＝2；
处理单元1201还用于：从第五码本中确定该第一码字；
其中，该第五码本中包括第十二码字和/或第十三码字，该第十二码字表征的非零天线端口的数量为2且该第十二码字的非零元素的数量为2；该第十三码字表征的非零天线端口的数量为2且该第十二码字的非零元素的数量大于2。
可选的，通信单元1202还用于：
发送(M/2)个天线端口的参考信号。
可选的，该参考信号用于设定功控模式下，该设定功控模式中该信道发送功率的取值小于或等于P。
可选的，通信单元1202还用于接收控制信息，该控制信息用于指示该第一码字。
可选的，该上行信号承载在物理上行共享信道PUSCH上。
当通信装置1200用于执行上述通信方法中网络设备执行的操作时，处理单元1201控制通信单元1202执行以下步骤：
接收能力指示信息，该能力指示信息用于指示第一码字表示为A*N的矩阵，其中，A、N为正整数；
根据该第一码字，发送下行控制信息。
可选的，该A＝2，该M＝4，该N＝1；或者，该A＝2，该M＝4，该N＝2；
通信单元1202还用于接收(M/2)个天线端口的参考信号，处理单元1201还用于根据该(M/2)个天线端口的参考信号，确定该下行控制信息。
可选的，该参考信号用于设定功控模式下，该设定功控模式中上行信道发送功率的取值小于或等于P，该P为上行最大发送功率。
可选的，通信单元1202还用于发送控制信息，该控制信息用于指示该第一码字。
基于与上述通信方法同一构思，如13所示，本申请实施例还提供了一种通信装置1300，该通信装置1300用于执行上述方法实施例中网络设备执行的操作，或者用于执行上述方法实施例中终端执行的操作。该通信装置1300包括：收发器1301、处理器1302、存储器1303。存储器1303为可选的。存储器1303用于存储处理器1302执行的程序。当该通信装置1300用于实现上述方法实施例终端执行的操作时，处理器1302用于调用一组程序，当程序被执行时，使得处理器1302执行上述方法实施例中终端执行的操作。
处理器1302，用于发送能力指示信息，所述能力指示信息用于指示第一码字表示为A*N的矩阵，其中，A、N为正整数；
处理器1302，还用于确定信道发送功率，所述信道发送功率为n个非零天线端口的发送功率；
处理器1302，还用于根据所述第一码字确定所述每个所述非零天线端口的发送功率，其中，所述n个非零天线端口与所述矩阵中的n行一一对应，所述n行的每一行中均包含一个或多个非零元素，该信道发送功率小于或等于P，其中，P的值为最大发送功率。
可选的，A≤M，n≤M，其中，该M为配置的天线端口的数量，M为2的整数次幂。
该A＝2，该M＝2或该M＝4，该N＝1；
处理器1302还用于：从第一码本中确定该第一码字；
其中，该第一码本中包括第二码字和/或第三码字，该第二码字表征的非零天线端口数量为1，该第三码字表征的非零天线端口的数量为2。
可选的，该A＝4，该M＝4，该N＝1；
处理器1302还用于：从第二码本中确定该第一码字；
其中，该第二码本中包括第四码字、第五码字和/或第六码字，该第四码字表征的非零天线端口的数量为1，该第五码字表征的非零天线端口的数量为2，该第六码字表征的非零天线端口的数量为4。
可选的，该A＝4，该M＝4，该N＝2；
处理器1302还用于：从第三码本中确定该第一码字；
其中，该第三码本中包括第七码字、第八码字和/或第九码字，该第七码字表征的非零天线端口的数量为2；该第八码字表征的非零天线端口的数量为4且该第八码字的非零元素的数量为4，或者，该第九码字表征的非零天线端口的数量为4且该第九码字的非零元素的数量大于4。
可选的，该A＝4，该M＝4，该N＝3；
处理器1302还用于：从第四码本中确定该第一码字；
其中，该第四码本中包括第十码字和/或第十一码字，该第十码字表征的非零天线端口的数量为3；该第十一码字表征的非零天线端口的数量为4且该第十一码字的非零元素的数量为4，或者，该第十一码字表征的非零天线端口的数量为4且该第十一码字的非零元素的数量大于4。
可选的，该A＝2，该M＝4，该N＝2；
处理器1302还用于：从第五码本中确定该第一码字；
其中，该第五码本中包括第十二码字和/或第十三码字，该第十二码字表征的非零天线端口的数量为2且该第十二码字的非零元素的数量为2；该第十三码字表征的非零天线端口的数量为2且该第十二码字的非零元素的数量大于2。
可选的，收发器1301还用于：
发送(M/2)个天线端口的参考信号。
可选的，该参考信号用于设定功控模式下，该设定功控模式中该信道发送功率的取值小于或等于P。
可选的，收发器1301还用于接收控制信息，该控制信息用于指示该第一码字。
可选的，该上行信号承载在物理上行共享信道PUSCH上。
当该通信装置1300用于实现上述方法实施例中网络设备执行的操作时，处理器1302用于调用一组程序，当程序被执行时，使得处理器1302执行上述方法实施例中网络设备执行的操作。具体的，处理器1302控制收发器1301执行：
接收能力指示信息，该能力指示信息用于指示第一码字表示为A*N的矩阵，其中，A、N为正整数；
根据该第一码字，发送下行控制信息。
可选的，该A＝2，该M＝4，该N＝1；或者，该A＝2，该M＝4，该N＝2；
收发器1301还用于接收(M/2)个天线端口的参考信号，处理单元1201还用于根据该(M/2)个天线端口的参考信号，确定该下行控制信息。
可选的，该参考信号用于设定功控模式下，该设定功控模式中上行信道发送功率的取值小于或等于P，该P为上行最大发送功率。
可选的，收发器1301还用于发送控制信息，该控制信息用于指示该第一码字。
图12中的功能模块通信单元1202可以通过收发器1301来实现，处理单元1201可以通过处理器1302来实现。
其中，处理器1302可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
处理器1302还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
存储器1303可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器1303也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器1303还可以包括上述种类的存储器的组合。
在本申请上述实施例提供的通信方法中，所描述的网络设备和终端所执行的操作和功能中的部分或全部，可以用芯片或集成电路来完成。
为了实现上述图12或图13所述的装置的功能，本申请实施例还提供一种芯片，包括处理器，用于支持该通信装置1200和该通信装置1300实现上述实施例提供的方法中终端和网络设备所涉及的功能。在一种可能的设计中，该芯片与存储器连接或者该芯片包括存 储器，该存储器用于保存该装置必要的程序指令和数据。
本申请实施例提供了一种计算机存储介质，存储有计算机程序，该计算机程序包括用于执行上述实施例提供的通信方法的指令。
本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述实施例提供的通信方法。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本申请的优选实施例，但本领域内的技术人员一旦得知了基本创造性概念，则可对这些实施例作出另外的变更和修改。所以，所附权利要求意欲解释为包括优选实施例以及落入本申请范围的所有变更和修改。
显然，本领域的技术人员可以对本申请实施例进行各种改动和变型而不脱离本申请实施例的精神和范围。这样，倘若本申请实施例的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (30)

  1. 一种通信方法，其特征在于，包括：
    终端确定能力指示信息，所述能力指示信息用于确定功率缩减因子，所述功率缩减因子为n个非零天线端口的实际发送功率总和与信道发送功率的比值，所述信道发送功率的最大取值为系统额定的最大发送功率，n为正整数；
    所述能力指示信息用于指示一个或者多个码字；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，额外配置的探测参考信号SRS的端口数，所述额外配置的SRS的端口数不同于最大天线端口数；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，是否支持配置多个不同端口数的SRS资源；和/或，所述能力指示信息用于指示在传输秩取值为x时，所述功率缩减因子的取值；其中，所述x的取值为{1，2，3}中的一个或者多个；
    所述终端发送所述能力指示信息。
  2. 如权利要求1所述的方法，其特征在于，所述功率缩减因子包括：n/M、n/N或1中的一个或者多个，其中，n为小于等于M的正整数，M为参考信号的端口数且M为小于等于N的正整数，所述N为所述终端能支持的最大传输端口数且N为正整数。
  3. 如权利要求1或2所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字表示为N*A的矩阵，其中，A为当前传输层数，当N＝2时，A的取值为1，当N＝4时，A的取值为1、2或3中的一个或多个；
    所述能力指示信息的状态位对应一个或者一组码字；或者，所述能力指示信息的比特位对应一个或者一组码字。
  4. 如权利要求1-3任一项所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字包括码字组1，所述码字组1包括以下码字中的至少一个：
    Figure PCTCN2020071531-appb-100001
    其中，a的取值为1或者
    Figure PCTCN2020071531-appb-100002
    和/或，
    所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：
    Figure PCTCN2020071531-appb-100003
    其中，a的取值为1或者
    Figure PCTCN2020071531-appb-100004
    b的取值为1，-1，j，-j中的至少一个。
  5. 如权利要求1-3任一项所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字包括第一码字组中的一个或者多个，所述第一码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100005
    其中，a的取值为1或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100006
    其中，a的取值为
    Figure PCTCN2020071531-appb-100007
    或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100008
    其中，a的取值为
    Figure PCTCN2020071531-appb-100009
    或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括
    Figure PCTCN2020071531-appb-100010
    其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，
    所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100011
    其中，b的取值为
    Figure PCTCN2020071531-appb-100012
    或者2；和/或，
    所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100013
    其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，
    所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：
    Figure PCTCN2020071531-appb-100014
    其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，
    所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：
    Figure PCTCN2020071531-appb-100015
    和/或，
    所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：
    Figure PCTCN2020071531-appb-100016
    和/或，
    所述能力指示信息指示的一个或者多个码字包括第十码字组，所述第十码字组包括如下码字中的一个或者多个：
    Figure PCTCN2020071531-appb-100017
  6. 如权利要求5所述的方法，其特征在于，
    所述能力指示信息的5个状态位分别对应所述第一码字组中的零个码字、一个码字、两个码字、三个码字和四个码字；或者，
    所述能力指示信息的4个比特位分别对应所述第一码字组中的四个码字；和/或，
    所述能力指示信息的一个比特位对应所述第二码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第三码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第四码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第六码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第七码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第八码字组中的码字；和/或，
    所述能力指示信息的一个比特位对应所述第九码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第十码字组中的部分或全部码字；和/或，
    所述能力指示信息的2个比特位分别对应所述码字组1中的两个码字；和/或，
    所述能力指示信息的1个比特位对应所述码字组2中的一个或者多个码字。
  7. 如权利要求5所述的方法，其特征在于，
    所述第五码字组中的三个码字分别对应所述能力指示信息中的三个比特位，其中，所 述第五码字组中的三个码字中存在非零元素分别位于第一行、第二行、第三行和第四行的码字；或者，
    所述第五码字组包括如下码字集合中的一个或者多个：
    Figure PCTCN2020071531-appb-100018
    所述码字集合分别对应所述能力指示信息的一个状态位。
  8. 如权利要求1-7任一项所述的方法，其特征在于，当所述能力指示信息的第一比特位取值为1且所述第一比特位对应的一个或者一组码字中的码字被DCI指示时，第一数据的所述功率缩减因子为1，其中，所述第一数据为所述DCI调度的。
  9. 如权利要求1-7任一项所述的方法，其特征在于，当所述能力指示信息的第一比特位取值为0且所述第一比特位对应的一个或者一组码字中的码字被DCI指示时，第一数据的所述功率缩减因子为n/M，或者n/N，其中，所述第一数据为所述DCI调度的。
  10. 如权利要求1-7任一项所述的方法，所述能力指示信息用于指示一个或者多个码字，和，在最大传输秩取值为x时，参考信号SRS的端口数，其特征在于，当所述能力指示信息指示所述第一码字组中的零个码字时，或者，当所述能力指示信息中对应所述第一码字组的比特位均置0时，在最大传输秩取值为1时，所述参考信号SRS的端口数为大于等于1的整数；和/或，
    当所述能力指示信息中对应所述第五码字组的比特位均置0时，在最大传输秩rank取值为2时，所述SRS的端口数为大于等于2的整数。
  11. 如权利要求4所述的方法，其特征在于，当所述能力指示信息中对应
    Figure PCTCN2020071531-appb-100019
    的比特位置1时，所述SRS的端口数为1；或者，当所述能力指示信息中对应
    Figure PCTCN2020071531-appb-100020
    的比特位置1时，所述SRS的端口数为1。
  12. 如权利要求1-2任一项所述的方法，其特征在于，所述x的取值为{1}、{2}和/或{3}；或者，所述x的取值为{1,2}和/或{3}；或者，所述x的取值为{1}和/或{2,3}。
  13. 如权利要求1、2或9所述的方法，其特征在于，确定第一数据的功率缩减因子的取值为n/M或者为1，其中，所述第一数据的发送端口根据第一SRS确定，所述第一SRS的端口数为所述能力指示信息指示的参考信号SRS的端口数。
  14. 如权利要求13所述的方法，其特征在于，SRS资源集合中包括多个SRS资源，所述多个SRS资源中的SRS资源的端口数不同，所述SRS资源集合中存在至少一个SRS资源的端口数与所述能力指示信息指示的SRS的端口数相同，或者，所述SRS资源集合中的部分SRS资源的端口数之和与所述能力指示信息指示的SRS的端口数相同。
  15. 如权利要求1、2、12或13所述的方法，其特征在于，所述SRS的端口数小于N，或者，所述SRS的类型为虚拟化。
  16. 如权利要求1-15任一项所述的方法，其特征在于，所述x的取值为{2}和/或{3}和/或{2,3}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝1；或者，所述x的取值为{1}和/或{1,2}和/或{2}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝3；或者，所述x的取值为{1}，所述能力指示信息还用于指示一个或者多个码字，所述一个或者多个码字的A＝2和/或3。
  17. 如权利要求1-16任一项所述的方法，其特征在于，所述能力指示信息指示
    Figure PCTCN2020071531-appb-100021
    或
    Figure PCTCN2020071531-appb-100022
    时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，
    所述能力指示信息指示
    Figure PCTCN2020071531-appb-100023
    时，b的取值为1或者
    Figure PCTCN2020071531-appb-100024
    所述功率缩减因子为1。
  18. 如权利要求1-17任一项所述的方法，其特征在于，所述能力指示信息指示
    Figure PCTCN2020071531-appb-100025
    或
    Figure PCTCN2020071531-appb-100026
    或
    Figure PCTCN2020071531-appb-100027
    或
    Figure PCTCN2020071531-appb-100028
    时，所述终端设备请求配置端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，
    所述能力指示信息指示
    Figure PCTCN2020071531-appb-100029
    或
    Figure PCTCN2020071531-appb-100030
    或
    Figure PCTCN2020071531-appb-100031
    或
    Figure PCTCN2020071531-appb-100032
    或
    Figure PCTCN2020071531-appb-100033
    或
    Figure PCTCN2020071531-appb-100034
    或
    Figure PCTCN2020071531-appb-100035
    或
    Figure PCTCN2020071531-appb-100036
    时，所述终端设备请求配置端口数为2的SRS，或者，所述终端设备请求类型为虚拟化的SRS；和/或，
    所述能力指示信息指示
    Figure PCTCN2020071531-appb-100037
    或
    Figure PCTCN2020071531-appb-100038
    或
    Figure PCTCN2020071531-appb-100039
    或
    Figure PCTCN2020071531-appb-100040
    或
    Figure PCTCN2020071531-appb-100041
    或
    Figure PCTCN2020071531-appb-100042
    时，所述终端设备请求配置2个端口数为1的SRS，或者，所述终端设备请求类型为虚拟化的SRS。
  19. 一种通信方法，其特征在于，包括：
    网络设备接收能力指示信息；
    所述能力指示信息用于确定功率缩减因子，所述功率缩减因子为n个非零天线端口的实际发送功率总和与信道发送功率的比值，所述信道发送功率的最大取值为系统额定的最大发送功率，n为正整数；
    所述能力指示信息用于指示一个或者多个码字；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，额外配置的探测参考信号SRS的端口数，所述额外配置的SRS的端口数不同于最大天线端口数；和/或，所述能力指示信息用于指示在最大传输秩取值为x时，是否支持配置多个不同端口数的SRS资源；和/或，所述能力指示信息用于指示在传输秩取值为x时，所述功率缩减因子的取值；其中，所述x的取值为{1，2，3}中的一个或者多个。
  20. 如权利要求19所述的方法，其特征在于，所述方法还包括：
    所述网络设备确定第一数据的功率缩减因子为1；
    所述网络设备发送下行控制信息DCI；其中，所述DCI用于调度所述第一数据，所述第一数据采用的码字为所述能力指示信息的第一比特位取值为1且所述第一比特位对应的一个或者一组码字中的码字。
  21. 如权利要求19或20所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字表示为N*A的矩阵，其中，A为当前传输层数，当N＝2时，A的取值为1，当N＝4时，A的取值为1、2或3中的一个或多个；
    所述能力指示信息的状态位对应一个或者一组码字；或者，所述能力指示信息的比特位对应一个或者一组码字。
  22. 如权利要求19-21任一项所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字包括码字组1，所述码字组1包括以下码字中的至少一个：
    Figure PCTCN2020071531-appb-100043
    其中，a的取值为1或者
    Figure PCTCN2020071531-appb-100044
    和/或，
    所述能力指示信息指示的一个或者多个码字包括码字组2，所述码字组2包括以下码字：
    Figure PCTCN2020071531-appb-100045
    其中，a的取值为1或者
    Figure PCTCN2020071531-appb-100046
    b的取值为1，-1，j，-j中的至少一个。
  23. 如权利要求19-21任一项所述的方法，其特征在于，所述能力指示信息指示的一个或者多个码字包括第一码字组中的一个或者多个，所述第一码字组包括如下码字中的至 少一个：
    Figure PCTCN2020071531-appb-100047
    其中，a的取值为1或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第二码字组中的一个或者多个，所述第二码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100048
    其中，a的取值为
    Figure PCTCN2020071531-appb-100049
    或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第三码字组中的一个或者多个，所述第三码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100050
    其中，a的取值为
    Figure PCTCN2020071531-appb-100051
    或者0.5；和/或，
    所述能力指示信息指示的一个或者多个码字包括第四码字组中的一个或者多个，所述第四码字组包括
    Figure PCTCN2020071531-appb-100052
    其中，e、f、g的取值分别为1，-1，j，-j中的一个或者多个；和/或，
    所述能力指示信息指示的一个或者多个码字包括第五码字组，所述第五码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100053
    其中，b的取值为
    Figure PCTCN2020071531-appb-100054
    或者2；和/或，
    所述能力指示信息指示的一个或者多个码字包括第六码字组，所述第六码字组包括如下码字中的至少一个：
    Figure PCTCN2020071531-appb-100055
    其中，c1和d1的取值分别为1，-1，j，-j中的一个或者多个；和/或，
    所述能力指示信息指示的一个或者多个码字包括第七码字组，所述第七码字组包括如下码字：
    Figure PCTCN2020071531-appb-100056
    其中，e1、f1、g1、e2、f2、g2的取值为1，-1，j，-j中的一个或者多个，；和/或，
    所述能力指示信息指示的一个或者多个码字包括第八码字组，所述第八码字组包括如下码字：
    Figure PCTCN2020071531-appb-100057
    和/或，
    所述能力指示信息指示的一个或者多个码字包括第九码字组，所述第九码字组包括如下码字中的一个或者多个：
    Figure PCTCN2020071531-appb-100058
    和/或，
    所述能力指示信息指示的一个或者多个码字包括第十码字组，所述第十码字组包括如下码字中的一个或者多个：
    Figure PCTCN2020071531-appb-100059
  24. 如权利要求23所述的方法，其特征在于，
    所述能力指示信息的5个状态位分别对应所述第一码字组中的零个码字、一个码字、两个码字、三个码字和四个码字；或者，
    所述能力指示信息的4个比特位分别对应所述第一码字组中的四个码字；和/或，
    所述能力指示信息的一个比特位对应所述第二码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第三码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第四码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第六码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第七码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第八码字组中的码字；和/或，
    所述能力指示信息的一个比特位对应所述第九码字组中的部分或全部码字；和/或，
    所述能力指示信息的一个比特位对应所述第十码字组中的部分或全部码字；和/或，
    所述能力指示信息的2个比特位分别对应所述码字组1中的两个码字；和/或，
    所述能力指示信息的1个比特位对应所述码字组2中的一个或者多个码字。
  25. 如权利要求23所述的方法，其特征在于，
    所述第五码字组中的三个码字分别对应所述能力指示信息中的三个比特位，其中，所述第五码字组中的三个码字中存在非零元素分别位于第一行、第二行、第三行和第四行的码字；或者，
    所述第五码字组包括如下码字集合中的一个或者多个：
    Figure PCTCN2020071531-appb-100060
    所述码字集合分别对应所述能力指示信息的一个状态位。
  26. 如权利要求19-25任一项所述的方法，其特征在于，当所述能力指示信息的第一比特位取值为1且DCI指示所述第一比特位对应的一个或者一组码字中的码字时，第一数据的所述功率缩减因子为1，其中，所述第一数据为所述DCI调度的。
  27. 如权利要求19-26任一项所述的方法，其特征在于，当所述能力指示信息的第一比特位取值为0且所述DCI指示第一比特位对应的一个或者一组码字中的码字时，第一数据的所述功率缩减因子为n/M，或者n/N，其中，所述第一数据为所述DCI调度的。
  28. 一种通信装置，其特征在于，包括处理器，所述处理器和存储器耦合，所述存储器中存储有指令；
    所述处理器执行所述指令时，使所述装置执行权利要求1至18任一项所述的方法。
  29. 一种通信装置，其特征在于，包括处理器，所述处理器和存储器耦合，所述存储器中存储有指令；
    所述处理器执行所述指令时，使所述装置执行权利要求19至27任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，所述计算机存储介质中存储有计算机可读指令，当计算机读取并执行所述计算机可读指令时，使得计算机执行如权利要求1-27任意一项所述的方法。
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