WO2023060449A1 - 无线通信的方法、终端设备和网络设备 - Google Patents

无线通信的方法、终端设备和网络设备 Download PDF

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Publication number
WO2023060449A1
WO2023060449A1 PCT/CN2021/123369 CN2021123369W WO2023060449A1 WO 2023060449 A1 WO2023060449 A1 WO 2023060449A1 CN 2021123369 W CN2021123369 W CN 2021123369W WO 2023060449 A1 WO2023060449 A1 WO 2023060449A1
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subband
subbands
pusch
tpmi
information
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PCT/CN2021/123369
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English (en)
French (fr)
Inventor
陈文洪
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Oppo广东移动通信有限公司
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Priority to CN202180101585.4A priority Critical patent/CN117941448A/zh
Priority to PCT/CN2021/123369 priority patent/WO2023060449A1/zh
Publication of WO2023060449A1 publication Critical patent/WO2023060449A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/12Wireless traffic scheduling

Definitions

  • the present application relates to the field of communication technologies, and more specifically, to a wireless communication method, terminal equipment, and network equipment.
  • the terminal device When the terminal device sends uplink data to the network device, it may perform precoding processing on the uplink data, so that the uplink data obtains an uplink precoding gain.
  • the terminal device may determine a precoding matrix based on a transmit precoding matrix indicator (TPMI), so as to implement precoding processing on uplink data.
  • TPMI transmit precoding matrix indicator
  • the TPMI can only indicate a wideband precoding matrix, resulting in very limited precoding gain.
  • the current TPMI cannot yet support subband precoding.
  • the present application provides a wireless communication method, a network device and a terminal device to solve the problem that the prior art cannot support sub-band precoding.
  • a wireless communication method including: a terminal device receives DCI for scheduling PUSCH, the DCI includes subband TPMI information; the terminal device selects from a preset Precoding matrices corresponding to multiple subbands occupied by the PUSCH are determined in the codebook.
  • a wireless communication method including: a network device sends DCI for scheduling PUSCH, the DCI includes subband TPMI information, and the subband TPMI information is used by the terminal device to obtain the preset code
  • precoding matrices corresponding to multiple subbands occupied by the PUSCH are determined; the network device receives the PUSCH after precoding is performed based on the precoding matrix.
  • a terminal device including: a receiving unit configured to receive DCI for scheduling PUSCH, the DCI including subband TPMI information; a first determining unit configured to The TPMI information determines the precoding matrix corresponding to the multiple subbands occupied by the PUSCH from the preset codebook.
  • a network device including: a sending unit configured to schedule DCI of a PUSCH, wherein the DCI includes subband TPMI information, and the subband TPMI information is used by a terminal device to select from a preset Precoding matrices corresponding to multiple subbands occupied by the PUSCH are determined in the codebook; a receiving unit is configured to receive the PUSCH precoded based on the precoding matrix.
  • a terminal device including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to call the computer programs in the memory to make the terminal device Execute the method described in the first aspect.
  • a network device including a processor, a memory, and a communication interface, the memory is used to store one or more computer programs, and the processor is used to invoke the computer programs in the memory to make the network device Execute the method of the second aspect.
  • an embodiment of the present application provides a communication system, where the system includes the above-mentioned terminal device and/or network device.
  • the system may further include other devices that interact with the terminal or network device in the solutions provided by the embodiments of the present application.
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program enables the terminal device to perform some or all of the steps in the method of the first aspect above .
  • the embodiment of the present application provides a computer-readable storage medium, the computer-readable storage medium stores a computer program, and the computer program causes the network device to perform some or all of the steps in the method of the second aspect above .
  • the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to enable the terminal to execute the above-mentioned first Some or all of the steps in the method of one aspect.
  • the computer program product can be a software installation package.
  • the embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a network device to execute Part or all of the steps in the method of the second aspect above.
  • the computer program product can be a software installation package.
  • an embodiment of the present application provides a chip, the chip includes a memory and a processor, and the processor can call and run a computer program from the memory to implement the method described in the first aspect or the second aspect above some or all of the steps.
  • the DCI provided in this embodiment of the present application includes subband TPMI information. Based on the subband TPMI information, the terminal device can perform subband-level precoding, thereby significantly improving precoding gain.
  • FIG. 1 is an exemplary diagram of a communication system to which the embodiments of the present application can be applied.
  • Fig. 2 is a schematic diagram of codebook-based precoding transmission.
  • Fig. 3 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of the device provided by the embodiment of the present application.
  • FIG. 1 is a wireless communication system 100 applied in an embodiment of the present application.
  • the wireless communication system 100 may include a network device 110 and a terminal device 120 .
  • the network device 110 may be a device that communicates with the terminal device 120 .
  • the network device 110 can provide communication coverage for a specific geographical area, and can communicate with the terminal device 120 located in the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminals.
  • the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.
  • the technical solutions of the embodiments of the present application can be applied to various communication systems, for example: the fifth generation (5th generation, 5G) system or new radio (new radio, NR), long term evolution (long term evolution, LTE) system , LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), etc.
  • the technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, and satellite communication systems, and so on.
  • the terminal equipment in the embodiment of the present application may also be called user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (mobile station, MS), mobile terminal (mobile terminal, MT) ), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device.
  • the terminal device in the embodiment of the present application may be a device that provides voice and/or data connectivity to users, and can be used to connect people, objects and machines, such as handheld devices with wireless connection functions, vehicle-mounted devices, and the like.
  • the terminal device in the embodiment of the present application can be mobile phone (mobile phone), tablet computer (Pad), notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical surgery, smart Wireless terminals in smart grid, wireless terminals in transportation safety, wireless terminals in smart city, wireless terminals in smart home, etc.
  • UE can be used to act as a base station.
  • a UE may act as a scheduling entity that provides sidelink signals between UEs in V2X or D2D, etc.
  • a cell phone and an automobile communicate with each other using sidelink signals. Communication between cellular phones and smart home devices without relaying communication signals through base stations.
  • the network device in this embodiment of the present application may be a device for communicating with a terminal device, and the network device may also be called an access network device or a wireless access network device, for example, the network device may be a base station.
  • the network device in this embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that connects a terminal device to a wireless network.
  • radio access network radio access network, RAN node (or device) that connects a terminal device to a wireless network.
  • the base station can broadly cover various names in the following, or replace with the following names, such as: Node B (NodeB), evolved base station (evolved NodeB, eNB), next generation base station (next generation NodeB, gNB), relay station, Access point, transmission point (transmitting and receiving point, TRP), transmission point (transmitting point, TP), primary station MeNB, secondary station SeNB, multi-standard wireless (MSR) node, home base station, network controller, access node , wireless node, access point (access point, AP), transmission node, transceiver node, base band unit (base band unit, BBU), remote radio unit (Remote Radio Unit, RRU), active antenna unit (active antenna unit) , AAU), radio head (remote radio head, RRH), central unit (central unit, CU), distributed unit (distributed unit, DU), positioning nodes, etc.
  • NodeB Node B
  • eNB evolved base station
  • next generation NodeB next generation NodeB
  • a base station may be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof.
  • a base station may also refer to a communication module, a modem or a chip configured in the aforementioned equipment or device.
  • the base station can also be a mobile switching center, a device that undertakes the function of a base station in D2D, vehicle-to-everything (V2X), machine-to-machine (M2M) communication, and a device in a 6G network.
  • V2X vehicle-to-everything
  • M2M machine-to-machine
  • Base stations can support networks of the same or different access technologies. The embodiment of the present application does not limit the specific technology and specific device form adopted by the network device.
  • Base stations can be fixed or mobile.
  • a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station.
  • a helicopter or drone may be configured to serve as a device in communication with another base station.
  • the network device in this embodiment of the present application may refer to a CU or a DU, or, the network device includes a CU and a DU.
  • a gNB may also include an AAU.
  • Network equipment and terminal equipment can be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air.
  • the scenarios where the network device and the terminal device are located are not limited.
  • Precoding processing can make data obtain precoding gains.
  • Precoding processing can be divided into two parts: analog domain processing and digital domain processing.
  • Analog domain processing maps the RF signal to the physical antenna for the transmitted analog signal.
  • analog domain processing can be achieved by means of beamforming.
  • Digital domain processing is aimed at digital signals, and can map the data of the transport layer to the radio frequency port.
  • Digital domain processing can be performed at baseband, eg precoding the digital signal using a precoding matrix.
  • the terminal device when sending uplink data to a network device, the terminal device may perform precoding processing on the uplink data.
  • the precoding process can make uplink data obtain uplink precoding gain.
  • the terminal device may perform precoding on the PUSCH.
  • the terminal device can precode the digital signal, and then perform beamforming on the analog signal.
  • codebook-based transmission For uplink data transmission, it can be divided into codebook-based transmission and non-codebook-based transmission.
  • codebook-based transmission one codeword in the codebook may correspond to one precoding matrix.
  • the precoding methods of codebook-based transmission and non-codebook-based transmission are different.
  • the following takes the uplink codebook-based precoding manner shown in FIG. 2 as an example to describe the uplink precoding process.
  • the network device may configure a sounding reference signal (sounding reference signal, SRS) resource (resource) set dedicated to codebook transmission for the terminal device.
  • SRS sounding reference signal
  • FIG. 2 is illustrated by taking N SRS resources included in the SRS resource set as an example, and N may be an integer greater than or equal to 1.
  • Step S210 the terminal device sends SRS on N SRS resources.
  • the SRS on each SRS resource may be transmitted using different beams.
  • the network device selects one SRS resource (for example, the SRS resource with the best signal quality) from the N SRS resources.
  • the SRS resource selected by the network device may be indicated by an SRS resource indicator (sounding reference signal resource indicator, SRI).
  • SRI sounding reference signal resource indicator
  • the SRS resource indicated by the SRI can also be used to obtain uplink channel state information (channel state information, CSI).
  • the network device may also determine at least one of the following information: a precoding matrix indicator (precoding matrix indicator, PMI), a rank indicator (rank indication, RI) or a channel quality indicator (channel quality indicator, CQI).
  • PMI can be selected from a codebook; RI or CQI can be obtained based on the selected PMI.
  • Step S230 the network device sends one or more of the following to the terminal device through downlink control information (DCI): SRI, transmit rank indicator (TRI), transmit precoding matrix indicator (transmit precoding One or more of matrix indicator, TPMI) and modulation and coding scheme (modulation and coding scheme, MCS).
  • DCI downlink control information
  • SRI transmit rank indicator
  • TRI transmit precoding matrix indicator
  • TPMI transmit precoding matrix indicator
  • MCS modulation and coding scheme
  • the terminal device may determine the number of layers based on the TRI, and determine the uplink precoding matrix (or precoder (precoder)) corresponding to the TPMI from the codebook according to the TRI and the TPMI.
  • precoder precoder
  • the terminal device may use the corresponding beam of the SRS resource indicated by the SRI to perform analog beamforming on the data.
  • Step S250 the terminal device sends the precoded uplink data and a demodulation reference signal (demodulation reference signal, DMRS) to the network device.
  • DMRS demodulation reference signal
  • the precoding matrix indicated by the TPMI can be used for PUSCH transmission over the entire transmission bandwidth. That is to say, the current uplink codebook supports broadband TPMI indication. Specifically, several bits in DCI can be used to indicate TRI and TPMI. The number of bits used to indicate the TRI and TPMI in the DCI is related to the number of antenna ports and the value of the maximum number of transmission layers (maxRank). Tables 1 to 4 show indication modes of TRI and TPMI corresponding to different numbers of antenna ports and different maximum numbers of transmission layers. Among them, TRI can be used to indicate the number of layers of transmission (number of layer), and TPMI can be used to indicate precoding information (precoding information). In addition, the number of transmission layers indicated by the TRI should be less than or equal to the maximum number of transmission layers. In the actual transmission process, the value of the TRI sent by the network device to the terminal device can be selected from 1 to maxRank.
  • Table 1 shows the indication methods of TRI and TPMI when the number of antenna ports is 4 and the maximum number of transmission layers is 2, 3 or 4;
  • Table 2 shows that the number of antenna ports is 4 ports and the maximum number of transmission layers The indication mode of TRI and TPMI when the number of antenna ports is 1;
  • Table 3 shows the indication mode of TRI and TPMI when the number of antenna ports is 2 ports and the maximum number of transmission layers is 2;
  • Table 4 shows the number of antenna ports is 2 ports , the indication mode of TRI and TPMI when the maximum number of transmission layers is 1.
  • the indexes in Table 1 to Table 4 are bit field mapped to index, and the tables show the TRI and TPMI indications corresponding to different indexes for different types of codebook subsets (codebookSubset).
  • the codebook subset may be at least one subset related to terminal capabilities in the codebook, and different terminal capabilities may use different codebook subsets.
  • the codebook subset may include, for example, one or more of fully AndPartialAndNonCoherent, partialAndNonCoherent, and nonCoherent.
  • Tables 1 to 4 are only examples, and the partial indexes in Tables 1 to 4 and their corresponding TRI and TPMI can be implemented independently, or the partial indexes in Tables 1 to 4 can be combined with other values implemented together.
  • the partial index mentioned here may refer to an index in any table in Table 1 to Table 4, a row index or multi-row index with the same value.
  • the first and second columns represent the TRI and TPMI corresponding to the index of the bit field mapping when the codebook subset is all but partial and non-coherent; the third and fourth columns represent the codebook When the subset is partial and non-coherent, the TRI and TPMI corresponding to the index of the bit-field mapping; the fifth and sixth columns indicate the TRI and TPMI corresponding to the index of the bit-field mapping when the codebook subset is non-coherent TPMI. For example, if the codebook subset is all and part and non-coherent, and the index of the bit field mapping is 0, it indicates that TRI is 1 and TPMI is 0.
  • the index of the bit field mapping can be 0-63, and the number of occupied bits is 6, that is, the number of bits used to indicate TRI and TPMI is 6.
  • the index of the bit field mapping may be 0-31, and the number of occupied bits is 5, that is, the number of bits used to indicate TRI and TPMI is 5.
  • the index of the bit field mapping may be 0-15, and the number of occupied bits is 4, that is, the number of bits used to indicate TRI and TPMI is 4.
  • the TPMI in Table 1-3 can only indicate the wideband precoding matrix, resulting in very limited precoding gain.
  • subband precoding also referred to as frequency selective precoding
  • TPMI cannot yet support subband precoding.
  • the present application proposes a wireless communication method, and the embodiments of the present application are described in detail below.
  • FIG. 3 is a schematic flowchart of a wireless communication method provided by an embodiment of the present application. The method in FIG. 3 is described from the perspective of interaction between the terminal device and the network device.
  • the terminal device and network device may be the terminal device and network device shown in FIG. 1 .
  • the wireless communication method includes steps S310 to S330.
  • Step S310 the terminal device receives the DCI for scheduling the PUSCH sent by the network device.
  • the DCI includes subband TPMI information.
  • the DCI may also include TRI and/or wideband TPMI information.
  • step S320 the terminal device determines precoding matrices corresponding to multiple subbands occupied by the PUSCH from a preset codebook according to the subband TPMI information.
  • the terminal device may perform subband-level precoding based on the precoding matrix to form a precoded PUSCH.
  • Step S330 the network device receives the precoded PUSCH sent by the terminal device.
  • the DCI provided in this embodiment of the present application includes subband TPMI information. Based on the subband TPMI information, the terminal device can perform subband-level precoding, thereby significantly improving precoding gain.
  • the indication method of wideband TPMI is described in detail. If the indication method of wideband TPMI is still used to indicate sub-band TPMI, the indication table will be very complicated, resulting in very difficult usability and readability of the table. Difference. For example, if the broadband includes 16 subbands, then the size of the indication table will be 16 times that of Table 1-Table 4. To solve this problem, this application proposes an indication method for sub-band TPMI.
  • the DCI used to schedule the PUSCH includes not only subband TPMI information, but also TRI information.
  • the terminal device can determine the number of bits of the subband TPMI information and/or the content indicated by the subband TPMI information according to the TRI information.
  • the TRI information can be used to indicate the number of transmission layers of the PUSCH.
  • TRI information can be independently indicated (or independently encoded) in the DCI.
  • a dedicated information field can be allocated for TRI.
  • the TRI information may be coded jointly with other information, that is, the TRI information and other information are simultaneously indicated through one information field.
  • the TRI information can be jointly coded with the wideband TPMI of the PUSCH, and indicated through the same information field. Coding the TRI information and the wideband TPMI can save DCI signaling overhead.
  • the DCI includes TRI information, wideband TPMI information, and subband TPMI information at the same time
  • the TRI information, wideband TPMI information, and subband TPMI information in the DCI can be encoded independently of each other (that is, TRI information, wideband TPMI information, The sub-band TPMI information is assigned a dedicated information field).
  • the TRI information can be coded jointly with the wideband TPMI information, while the subband TPMI information is coded independently.
  • the TRI information can be coded jointly with the subband TPMI information, while the wideband TPMI is coded independently.
  • the embodiment of the present application does not specifically limit the manner of determining the number of bits occupied by the subband TPMI information.
  • the terminal device may determine the number of bits occupied by subband TPMI information according to the TRI information.
  • the terminal device may determine the number of bits occupied by the subband TPMI information according to the TRI information and the broadband TPMI information.
  • the wideband TPMI information is included in the DCI
  • the number of transmission layers indicated by the TRI information is 1, the number of bits of the subband TPMI information may be 1 bit or 2 bits per subband.
  • the number of bits of subband TPMI information may be 1 bit or 2 bits per subband.
  • the subband TPMI information is 0 bit or 1 bit per subband.
  • the subband TPMI information is 0 bits.
  • the wideband TPMI information is not included in the DCI, if the number of transmission layers indicated by the TRI information is 1, the number of bits of the subband TPMI information is 3 bits or 4 bits per subband.
  • the subband TPMI information is 2 bits or 3 bits per subband.
  • the subband TPMI information is 0 bit or 1 bit per subband or 2 bits per subband.
  • the subband TPMI information is 0 bits.
  • the subband TPMI information can be acquired together with the wideband TPMI information and the TRI information. Therefore, when the wideband TPMI information is included in the DCI, the number of bits of the subband TPMI information may be less than that of the subband TPMI information when the DCI does not include the wideband TPMI information, thereby saving signaling overhead.
  • the more layers indicated by the TRI information the fewer optional items of the TPMI. Therefore, the more layers indicated by the TRI information, the less the number of bits of subband TPMI information can be.
  • the terminal device can not only determine the number of bits of the subband TPMI information according to the TRI information, but also determine the content indicated by the subband TPMI information according to the TRI information.
  • the content indicated by the subband TPMI information may be, for example, a codeword in the codebook indicated by the TRI information.
  • the subband TPMI information indicates a codeword in a codebook of rank (rank) k.
  • the terminal device can determine the number of bits of the subband TPMI information and the content indicated by the subband TPMI information. For example, when the TRI information is different, the number of transmission layers indicated by the TRI is also different, the number of bits of subband TPMI information may be different, and the codebook used by the terminal device may also be different.
  • N is the number of subbands occupied by the PUSCH
  • v is the number of transmission layers indicated by the TRI information in the DCI
  • M v is the number of TPMI bits of each subband corresponding to v.
  • N may be obtained from several candidate values of the number of subbands through high-layer signaling.
  • the terminal device may obtain several candidate values of the number of subbands through radio resource control (radio resource control, RRC) signaling, and then obtain the candidate values from the candidate values through medium access control (medium access control, MAC) layer signaling Indicates the number of subbands currently in use. For example, if the candidate values for the number of subbands are 1-16, the network device can select 4 or 8 values from the 16 candidate values through RRC signaling, and then use 2 or 3 bits of MAC layer signaling to select The 4 or 8 values indicate the number of subbands currently used. As another example, the terminal device may directly indicate the number N of subbands occupied by the PUSCH from candidate values through RRC signaling. As yet another example, the MAC layer signaling indicates the number N of subbands occupied by the PUSCH from the candidate values.
  • RRC radio resource control
  • MAC medium access control
  • the terminal device may determine the number N of subbands occupied by the PUSCH according to the bandwidth of the bandwidth part (band width part, BWP) where the PUSCH is located.
  • BWP bandwidth part
  • subband are two different concepts.
  • the granularity of the subband is smaller than or equal to the granularity of the BWP.
  • one BWP may include one or more subbands. The greater the bandwidth of the BWP, the greater the number of subbands.
  • the maximum value of the number of subbands may be proportional to the bandwidth of the BWP.
  • the maximum number of subbands is M when the bandwidth of the BWP is 5M
  • the maximum number of subbands can be 2*M when the bandwidth of the BWP is 10M
  • the maximum number of subbands when the bandwidth of the BWP is 20M can be is 4*M
  • the maximum number of subbands can be 8*M when the BWP bandwidth is 40M.
  • N may be obtained according to RRC signaling and the bandwidth of the BWP where the PUSCH is located.
  • the candidate values of the number of subbands may also be different. Take the BWP bandwidth of 5M or 20M as an example for illustration.
  • the candidate value of the number of subbands may be any one of 1, 2, 3, 4, 5, 6, 7 or 8.
  • the candidate value of the number of subbands may be any one of 2, 4, 6, 8, 10, 12, 14 or 16. It can be understood that, for different BWP bandwidths, the value of the number of subbands indicated by the same RRC signaling may be different. It should be noted that the present application does not limit the candidate values of the number of subbands and the number of candidate values, which may be determined according to actual conditions.
  • M v may be determined according to TRI information in the DCI, or determined according to TRI information and broadband TPMI information. For example, when the number of transmission layers indicated by the TRI information is different, the number of TPMI bits on each subband may also be different. Alternatively, M v may be determined according to TRI information and broadband TPMI information. For example, when the TRI information and the wideband TPMI information are indicated by the same information field, but the values indicated by the information field are different, the number of TPMI bits on each subband may also be different.
  • the number of bits of the corresponding subband TPMI information may be different. For example, for some transmission layers with small sub-band precoding gain, less bits may be allocated for sub-band TPMI information. For the number of transmission layers with relatively large sub-band precoding gain, more bits may be allocated for the sub-band TPMI information.
  • the setting method of the number of bits of the sub-band TPMI information can make the technical solution of the present application reduce the number of bits of the sub-band TPMI information as much as possible on the basis of improving the sub-band precoding gain, thereby reducing the physical downlink control channel (physical downlink control channel). downlink control channel, PDCCH) load, and guarantee the transmission performance of PDCCH.
  • PDCCH physical downlink control channel
  • the DCI may use bits reserved by the DCI to carry sub-band TPMI information.
  • the calculation method of the number of bits reserved by the DCI for the subband TPMI information is described in detail below.
  • N_m is the number of subbands, and in some embodiments, N_m may be the number of subbands indicated by higher layer signaling. Alternatively, N_m may be the maximum number of subbands allowed by the bandwidth of the BWP where the PUSCH is located. For example, N_m may be the maximum number of subbands that can be scheduled by the network device on the BWP bandwidth where the PUSCH is located.
  • the present application can reserve the number of subband TPMI bits in the DCI according to the maximum length, so that the length of the information field of the subband TPMI information is fixed.
  • the fixed length of the information field of the subband TPMI information can make the length of the DCI carrying the subband TPMI information fixed.
  • the terminal device can pre-determine the size of the DCI before detection, so that there is no need to blindly detect the size of the DCI, thereby reducing the complexity of the blind detection of the terminal device.
  • the number of bits used to indicate subband TPMI information may be less than the reserved number of bits.
  • the present application does not limit the use of bits not used to indicate subband TPMI information among the reserved bits. For example, bit positions not used to indicate sub-band TPMI information among the reserved bits may be set to zero. Taking the number of bits occupied by the subband TPMI information under the current TRI information as an example, if the number of reserved bits is X, the first K bits of the X bits can be the subband TPMI information, and the last X-K bits can be set to zero . Alternatively, bits not used to indicate subband TPMI information among the reserved bits may be used to indicate other information.
  • the subband TPMI information may indicate the TPMI of all or part of the subbands occupied by the PUSCH. If the first condition is satisfied, the subband TPMI information may indicate the TPMI of some subbands in the subbands occupied by the PUSCH, and the first condition may include at least one of the following conditions:
  • the initial number of bits of the subband TPMI information may be the number of bits of TPMI of all subbands occupied by the PUSCH. It can be understood that the first condition can be satisfied when the initial bit number of subband TPMI information in the DCI is too large and/or the proportion of bits of subband TPMI information is too large.
  • the subband TPMI information may indicate the TPMI of some subbands, so that the number of bits of the subband TPMI information is smaller than the initial number of bits of the subband TPMI information.
  • the TPMI information indicating the technical solution of the TPMI of some subbands
  • it can make the load of PDCCH more reasonable, and avoid affecting the transmission performance of PDCCH due to too large subband TPMI information; on the other hand, by reasonably discarding
  • the partial TPMI can reduce the number of bits of the PDCCH while keeping the precoding gain unaffected as much as possible.
  • the subband TPMI information may indicate the TPMI of some subbands.
  • the subband TPMI The information may indicate TPMI of a partial subband.
  • the first threshold, the second threshold, the third threshold or the fourth threshold may all be referred to as thresholds associated with the first condition.
  • the threshold associated with the first condition may be configured by the network device or pre-agreed between the network device and the terminal. Or, for different DCI formats, the threshold of the first conditional association may be different. For example, the threshold value of DCI format 1_2 may be lower than the threshold value of DCI format 1_1, so as to ensure the performance of ultra-reliable & low latency communications (URLLC).
  • URLLC ultra-reliable & low latency communications
  • the subband TPMI information indicates part of the subbands occupied by the PUSCH, it may be determined which part of all the subbands the subband TPMI information specifically indicates according to the subband index or subband priority.
  • the subband TPMI information when the subband TPMI information indicates a part of the subbands occupied by the PUSCH, the subband TPMI information may indicate the TPMI of an even subband among the subbands occupied by the PUSCH.
  • the subband TPMI information only indicates the TPMI of the even subbands, and does not indicate the TPMI of the odd subbands, that is, the TPMI information of the odd subbands is discarded.
  • the subband TPMI information when the subband TPMI information indicates part of subbands in the subbands occupied by the PUSCH, the subband TPMI information may indicate the TPMI of odd subbands in the subbands occupied by the PUSCH.
  • the subband TPMI information only indicates the TPMI of the odd subbands, and does not indicate the TPMI of the even subbands, that is, the TPMI information of the even subbands is discarded.
  • the subband TPMI information when the subband TPMI information indicates a part of the subbands occupied by the PUSCH, the subband TPMI information may indicate the TPMIs of n subbands with the highest priority among the subbands occupied by the PUSCH.
  • TPMI information of other subbands with lower priority may be discarded.
  • n may be less than or equal to the maximum number of subbands that make the first condition not satisfied.
  • n may be the maximum number of subbands for which the first condition is not satisfied.
  • n may be the maximum number of subbands for which the code rate of the PDCCH does not exceed the threshold.
  • n may be the maximum number of subbands for which the number of bits of subband TPMI information does not exceed the threshold.
  • the priority of the subbands may be determined based on a combination of one or more of the following methods: the priority of the even-numbered subbands in the subbands occupied by the PUSCH is higher than that of the subbands occupied by the PUSCH the priority of the odd subbands in the subbands occupied by the PUSCH; the priority of the odd subbands in the subbands occupied by the PUSCH is higher than the priority of the even subbands in the subbands occupied by the PUSCH; the priority of the even subbands in the subbands occupied by the PUSCH A subband with a smaller subband index has a higher priority than a subband with a larger subband index in the subbands occupied by the PUSCH; a subband with a smaller subband index in the even subbands occupied by the PUSCH The priority is higher than the subband with a larger subband index in the even subbands occupied by the PUSCH; the subband with a smaller subband index in the even
  • the present application provides a method for determining a precoding matrix.
  • the first subband is not included in the partial subbands, that is, the subband TPMI information does not indicate the TPMI of the first subband.
  • the second subband is a subband whose index is closest to the first subband among the partial subbands. Then the precoding matrix corresponding to the first subband may be the same as the precoding matrix corresponding to the second subband.
  • the precoding matrix is the precoding matrix corresponding to the TPMI of the previous (or the next) subband. For example, if the subband with the subband index 1 does not indicate TPMI, that is, the subband with the subband index 1 is the first subband, then the second subband may be the subband with the subband index 0 or 2.
  • the terminal device can confirm that the precoding matrix of the subband whose subband index is 1 is the same as the precoding matrix of the subband whose subband index is 0 (or 2). If the part of the subbands is an odd subband, the terminal device may determine that the precoding matrix of the even subband is the precoding matrix corresponding to the TPMI of the subsequent (or previous) subband. For example, if the subband with the subband index 2 does not indicate TPMI, that is, the subband with the subband index 2 is the first subband, then the second subband may be the subband with the index 1 or 3. Then, the terminal device may confirm that the precoding matrix of the subband whose subband index is 2 may be the same as the precoding matrix of the subband whose subband index is 3 (or 1).
  • the terminal device may determine the precoding matrix of the PUSCH on each subband from a preset codebook according to the subband TPMI information.
  • the terminal device may determine the precoding matrix of the target subband from a preset codebook according to the wideband TPMI and the subband TPMI of the target subband.
  • Each codeword in the preset codebook can be obtained according to two parameters of wideband TPMI and subband TPMI, and the mapping relationship between subband TPMI information and wideband TPMI information and codewords in the codebook can be agreed in advance.
  • the terminal device may determine the precoding matrix of the PUSCH in each subband from a preset codebook only according to the subband TPMI information.
  • the mapping relationship between subband TPMI information and codewords in the codebook can be agreed in advance.
  • FIG. 4 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • the terminal device 900 in FIG. 4 includes a receiving unit 410 and a first determining unit 420 .
  • the receiving unit 410 may be configured to receive DCI for scheduling the PUSCH, where the DCI includes subband TPMI information.
  • the first determining unit 420 may be configured to determine precoding matrices corresponding to multiple subbands occupied by the PUSCH from a preset codebook according to the subband TPMI information.
  • the terminal device 900 may further include a second determining unit.
  • the second determining unit may be configured to determine the number of bits occupied by the subband TPMI information and/or the content indicated by the subband TPMI information according to the TRI information in the DCI.
  • the TRI information and the broadband TPMI information of the PUSCH are indicated through the same information field.
  • the N is obtained from multiple candidate values according to high-layer signaling, or the N is obtained according to the bandwidth of the BWP where the PUSCH is located.
  • the multiple candidate values are obtained according to RRC signaling, and the N is indicated from the multiple candidate values by MAC layer signaling.
  • the bandwidth of the BWP where the PUSCH is located is different, and the candidate values of the number of subbands occupied by the PUSCH are different.
  • the Mv is determined according to TRI information in the DCI; or, the Mv is determined according to the TRI information and broadband TPMI information in the DCI.
  • N_m is the number of subbands indicated by high-level signaling, or the number of subbands where the PUSCH is located.
  • max(M v ) is the maximum value of the number of TPMI bits of each sub-band under different TRI indications.
  • the X bits include at least one bit not used to indicate the subband TPMI information, the at least one bit is set to zero, or the at least one bit is used to indicate information other than information.
  • the subband TPMI information indicates the TPMI of some subbands in the subbands occupied by the PUSCH.
  • the subband TPMI information indicates the TPMI of some subbands in the subbands occupied by the PUSCH
  • the first condition includes at least one of the following conditions: bearing the DCI
  • the code rate of the PDCCH exceeds the first threshold; indicates that the initial number of bits of the subband TPMI information is greater than the second threshold; indicates that the ratio of the initial number of bits of the subband TPMI information to the second number of bits is greater than the third threshold, wherein , the second number of bits is the sum of the number of bits of other information in the DCI; and indicating that the ratio of the initial number of bits of the subband TPMI information to the third number of bits is greater than a fourth threshold, wherein the first The three-bit number is the total number of bits of the DCI.
  • the threshold associated with the first condition is configured by the network device, or pre-agreed between the network device and the terminal device.
  • the subband TPMI information indicates the TPMI of even subbands among the subbands occupied by the PUSCH; or, the subband TPMI information indicates the TPMI of odd subbands among the subbands occupied by the PUSCH.
  • the subband TPMI information indicates the TPMIs of n subbands with the highest priority among the subbands occupied by the PUSCH, where n is less than or equal to the maximum number of subbands that make the first condition not satisfied.
  • the priority of the subbands occupied by the PUSCH is determined based on a combination of one or more of the following methods: the priority of an even-numbered subband in the subbands occupied by the PUSCH is higher than that of the PUSCH occupied The priority of the odd subbands in the subbands occupied by the PUSCH; the priority of the odd subbands in the subbands occupied by the PUSCH is higher than the priority of the even subbands in the subbands occupied by the PUSCH; the priority of the even subbands in the subbands occupied by the PUSCH
  • the subband with a smaller subband index in the subband has a higher priority than the subband with a larger subband index in the subband occupied by the PUSCH; the subband index in the even subband occupied by the PUSCH is smaller The priority of the subband is higher than the subband with a larger subband index among the even subbands occupied by the PUSCH; the priority of the subband with a smaller sub
  • the precoding matrix corresponding to the first subband in the subbands occupied by the PUSCH is the same as the precoding matrix corresponding to the second subband, wherein the first subband is not included in the partial subbands , the second subband is a subband whose index is closest to the first subband among the partial subbands.
  • the precoding matrix corresponding to the odd subband in the subbands occupied by the PUSCH is the same as the precoding matrix of the odd subband
  • the precoding matrix corresponding to one subband or the next subband is the same; or, if the partial subbands are odd subbands in the subbands occupied by the PUSCH, then the even subbands in the subbands occupied by the PUSCH
  • the corresponding precoding matrix is the precoding matrix corresponding to the previous subband or the subsequent subband of the even subband.
  • the terminal device determines the precoding matrix corresponding to the one or more subbands from a preset codebook according to the subband TPMI information, including: if the DCI includes wideband TPMI information, then The terminal device determines a precoding matrix corresponding to the one or more subbands from a preset codebook according to the wideband TPMI information and the subband TPMI information.
  • FIG. 5 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • the network device 500 in FIG. 5 includes a sending unit 510 and a receiving unit 520 .
  • the sending unit 510 may be configured to schedule the DCI of the PUSCH, the DCI includes subband TPMI information, and the subband TPMI information is used by the terminal device to determine the multiple subbands occupied by the PUSCH from a preset codebook The corresponding precoding matrix.
  • the receiving unit 520 may be configured to receive the PUSCH precoded based on the precoding matrix.
  • the DCI includes TRI information
  • the TRI information is used by the terminal device to determine the number of bits occupied by the subband TPMI information and/or content indicated by the subband TPMI information.
  • the TRI information and the broadband TPMI information of the PUSCH are indicated through the same information field.
  • the N is obtained from multiple candidate values according to high-layer signaling, or the N is obtained according to the bandwidth of the BWP where the PUSCH is located.
  • the multiple candidate values are obtained according to RRC signaling, and the N is indicated from the multiple candidate values by MAC layer signaling.
  • the bandwidth of the BWP where the PUSCH is located is different, and the candidate values of the number of subbands occupied by the PUSCH are different.
  • the Mv is determined according to TRI information in the DCI; or, the Mv is determined according to the TRI information and broadband TPMI information in the DCI.
  • N_m is the number of subbands indicated by high-level signaling, or the number of subbands where the PUSCH is located
  • max(Mv) is the maximum value of the number of TPMI bits of each sub-band under different TRI indications.
  • the X bits include at least one bit not used to indicate the subband TPMI information, the at least one bit is set to zero, or the at least one bit is used to indicate information other than information.
  • the subband TPMI information indicates the TPMI of some subbands in the subbands occupied by the PUSCH.
  • the subband TPMI information indicates the TPMI of some subbands in the subbands occupied by the PUSCH
  • the first condition includes at least one of the following conditions: bearing the DCI
  • the code rate of the PDCCH exceeds the first threshold; indicates that the initial number of bits of the subband TPMI information is greater than the second threshold; indicates that the ratio of the initial number of bits of the subband TPMI information to the second number of bits is greater than the third threshold, wherein , the second number of bits is the sum of the number of bits of other information in the DCI; and indicating that the ratio of the initial number of bits of the subband TPMI information to the third number of bits is greater than a fourth threshold, wherein the first The three-bit number is the total number of bits of the DCI.
  • the threshold associated with the first condition is configured by the network device, or pre-agreed between the network device and the terminal device.
  • the subband TPMI information indicates the TPMI of even subbands among the subbands occupied by the PUSCH; or, the subband TPMI information indicates the TPMI of odd subbands among the subbands occupied by the PUSCH.
  • the subband TPMI information indicates the TPMIs of n subbands with the highest priority among the subbands occupied by the PUSCH, where n is less than or equal to the maximum number of subbands that make the first condition not satisfied.
  • the priority of the subbands occupied by the PUSCH is determined based on a combination of one or more of the following methods: the priority of an even-numbered subband in the subbands occupied by the PUSCH is higher than that of the PUSCH occupied The priority of the odd subbands in the subbands occupied by the PUSCH; the priority of the odd subbands in the subbands occupied by the PUSCH is higher than the priority of the even subbands in the subbands occupied by the PUSCH; the priority of the even subbands in the subbands occupied by the PUSCH
  • the subband with a smaller subband index in the subband has a higher priority than the subband with a larger subband index in the subband occupied by the PUSCH; the subband index in the even subband occupied by the PUSCH is smaller The priority of the subband is higher than the subband with a larger subband index among the even subbands occupied by the PUSCH; the priority of the subband with a smaller sub
  • the precoding matrix corresponding to the first subband in the subbands occupied by the PUSCH is the same as the precoding matrix corresponding to the second subband, wherein the first subband is not included in the partial subbands , the second subband is a subband whose index is closest to the first subband among the partial subbands.
  • the precoding matrix corresponding to the odd subband in the subbands occupied by the PUSCH is the same as the precoding matrix of the odd subband
  • the precoding matrix corresponding to one subband or the next subband is the same; or, if the partial subbands are odd subbands in the subbands occupied by the PUSCH, then the even subbands in the subbands occupied by the PUSCH
  • the corresponding precoding matrix is the precoding matrix corresponding to the previous subband or the subsequent subband of the even subband.
  • Fig. 6 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the dotted line in Figure 6 indicates that the unit or module is optional.
  • the apparatus 600 may be used to implement the methods described in the foregoing method embodiments.
  • Apparatus 600 may be a chip, a terminal device or a network device.
  • Apparatus 600 may include one or more processors 610 .
  • the processor 610 may support the device 600 to implement the methods described in the foregoing method embodiments.
  • the processor 610 may be a general purpose processor or a special purpose processor.
  • the processor may be a central processing unit (central processing unit, CPU).
  • the processor can also be other general-purpose processors, digital signal processors (digital signal processors, DSPs), application specific integrated circuits (application specific integrated circuits, ASICs), off-the-shelf programmable gate arrays (field programmable gate arrays, FPGAs) Or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • Apparatus 600 may also include one or more memories 620 .
  • a program is stored in the memory 620, and the program can be executed by the processor 610, so that the processor 610 executes the methods described in the foregoing method embodiments.
  • the memory 620 may be independent from the processor 610 or may be integrated in the processor 610 .
  • the apparatus 600 may also include a transceiver 630 .
  • the processor 610 can communicate with other devices or chips through the transceiver 630 .
  • the processor 610 may send and receive data with other devices or chips through the transceiver 630 .
  • the embodiment of the present application also provides a computer-readable storage medium for storing programs.
  • the computer-readable storage medium can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the embodiment of the present application also provides a computer program product.
  • the computer program product includes programs.
  • the computer program product can be applied to the terminal or the network device provided in the embodiments of the present application, and the program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal or the network device provided in the embodiments of the present application, and the computer program enables the computer to execute the methods performed by the terminal or the network device in the various embodiments of the present application.
  • the "indication" mentioned may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B according to A does not mean determining B only according to A, and B may also be determined according to A and/or other information.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is instructed, configures and is configured, etc. relation.
  • predefined or “preconfigured” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the application does not limit its specific implementation.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • serial numbers of the above-mentioned processes do not mean the order of execution, and the execution order of each process should be determined by its functions and internal logic, rather than the implementation process of the embodiments of the present application. constitute any limitation.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • software When implemented using software, it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be read by a computer, or a data storage device such as a server or a data center integrated with one or more available media.
  • the available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital versatile disc (digital video disc, DVD)) or a semiconductor medium (for example, a solid state disk (solid state disk, SSD) )wait.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a digital versatile disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disk (solid state disk, SSD)

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Abstract

本申请提供了一种无线通信的方法、终端设备和网络设备。所述方法包括:终端设备接收用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息;所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。在本申请中,用于调度PUSCH的DCI信令包含子带的TPMI信息,从而使DCI信令支持子带TPMI的指示。基于子带的TPMI信息,终端设备可以进行子带级别的预编码,从而显著提高预编码增益。

Description

无线通信的方法、终端设备和网络设备 技术领域
本申请涉及通信技术领域,并且更为具体地,涉及一种无线通信的方法、终端设备和网络设备。
背景技术
终端设备向网络设备发送上行数据时,可以对上行数据进行预编码处理,从而使上行数据获得上行预编码增益。终端设备可以基于发送预编码矩阵指示(transmit precoding matrix indicator,TPMI)确定预编码矩阵,进而实现对上行数据的预编码处理。
目前,TPMI只能指示宽带的预编码矩阵,导致预编码增益很有限。例如,目前的TPMI还无法支持子带的预编码。
发明内容
本申请提供一种无线通信方法、网络设备和终端设备,以解决现有技术无法支持子带预编码的问题。
第一方面,提供了一种无线通信方法,包括:终端设备接收用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息;所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
第二方面,提供了一种无线通信的方法,包括:网络设备发送用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息,所述子带TPMI信息用于终端设备从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵;所述网络设备接收基于所述预编码矩阵进行预编码后的所述PUSCH。
第三方面,提供了一种终端设备,包括:接收单元,被配置为接收用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息;第一确定单元,被配置为根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
第四方面,提供了一种网络设备,包括:发送单元,被配置为用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息,所述子带TPMI信息用于终端设备从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵;接收单元,被配置为接收基于所述预编码矩阵进行预编码后的所述PUSCH。
第五方面,提供一种终端设备,包括处理器、存储器、通信接口,所述存储器用于存储一个或多个计算机程序,所述处理器用于调用所述存储器中的计算机程序使得所述终端设备执行第一方面所述的方法。
第六方面,提供一种网络设备,包括处理器、存储器、通信接口,所述存储器用于存储一个或多个计算机程序,所述处理器用于调用所述存储器中的计算机程序使得所述网络设备执行第二方面的方法。
第七方面,本申请实施例提供了一种通信系统,该系统包括上述的终端设备和/或网络设备。在另一种可能的设计中,该系统还可以包括本申请实施例提供的方案中与该终端或网络设备进行交互的其他设备。
第八方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序使得终端设备执行上述第一方面的方法中的部分或全部步骤。
第九方面,本申请实施例提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序使得网络设备执行上述第二方面的方法中的部分或全部步骤。
第十方面,本申请实施例提供了一种计算机程序产品,其中,所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,所述计算机程序可操作来使终端执行上述第一方面的方法中的部分或全部步骤。在一些实现方式中,该计算机程序产品可以为一个软件安装包。
第十一方面,本申请实施例提供了一种计算机程序产品,其中,所述计算机程序产品包括存储了计算机程序的非瞬时性计算机可读存储介质,所述计算机程序可操作来使网络设备执行上述第二方面的方法中的部分或全部步骤。在一些实现方式中,该计算机程序产品可以为一个软件安装包。
第十二方面,本申请实施例提供了一种芯片,该芯片包括存储器和处理器,处理器可以从存储器中调用并运行计算机程序,以实现上述第一方面或第二方面的方法中所描述的部分或全部步骤。
在本申请实施例提供的DCI包含子带TPMI信息,基于子带TPMI信息,终端设备可以进行子带级别的预编码,从而显著提高预编码增益。
附图说明
图1是可应用本申请实施例的通信系统的示例图。
图2是一种基于码本的预编码传输的示意图。
图3是本申请实施例提供的无线通信的方法的示意性流程图。
图4是本申请实施例提供的终端设备的结构示意图。
图5是本申请实施例提供的网络设备的结构示意图。
图6是本申请实施例提供的装置的结构示意图。
具体实施方式
下面将结合附图,对本申请中的技术方案进行描述。
图1是本申请实施例应用的无线通信系统100。该无线通信系统100可以包括网络设备110和终端设备120。网络设备110可以是与终端设备120通信的设备。网络设备110可以为特定的地理区域提供通信覆盖,并且可以与位于该覆盖区域内的终端设备120进行通信。
图1示例性地示出了一个网络设备和两个终端,可选地,该无线通信系统100可以包括多个网络设备并且每个网络设备的覆盖范围内可以包括其它数量的终端设备,本申请实施例对此不做限定。
可选地,该无线通信系统100还可以包括网络控制器、移动管理实体等其他网络实体,本申请实施例对此不作限定。
应理解,本申请实施例的技术方案可以应用于各种通信系统,例如:第五代(5th generation,5G)系统或新无线(new radio,NR)、长期演进(long term evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)等。本申请提供的技术方案还可以应用于未来的通信系统,如第六代移动通信系统,又如卫星通信系统,等等。
本申请实施例中的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(mobile station,MS)、移动终端(mobile terminal,MT)、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。本申请实施例中的终端设备可以是指向用户提供语音和/或数据连通性的设备,可以用于连接人、物和机,例如具有无线连接功能的手持式设备、车载设备等。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)、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备,虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)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、远程手术(remote medical surgery)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。可选地,UE可以用于充当基站。例如,UE可以充当调度实体,其在V2X或D2D等中的UE之间提供侧行链路信号。比如,蜂窝电话和汽车利用侧行链路信号彼此通信。蜂窝电话和智能家居设备之间通信,而无需通过基站中继通信信号。
本申请实施例中的网络设备可以是用于与终端设备通信的设备,该网络设备也可以称为接入网设备或无线接入网设备,如网络设备可以是基站。本申请实施例中的网络设备可以是指将终端设备接入到无线网络的无线接入网(radio access network,RAN)节点(或设备)。基站可以广义的覆盖如下中的各种名称,或与如下名称进行替换,比如:节点B(NodeB)、演进型基站(evolved NodeB,eNB)、下一代基站(next generation NodeB,gNB)、中继站、接入点、传输点(transmitting and receiving point,TRP)、发射点(transmitting point,TP)、主站MeNB、辅站SeNB、多制式无线(MSR)节点、家庭基站、网络控制器、接入节点、无线节点、接入点(access point,AP)、传输节点、收发节点、基带单元(base band unit,BBU)、射频拉远单元(Remote Radio Unit,RRU)、有源天线单元(active antenna unit,AAU)、射频头(remote radio head,RRH)、中心单元(central unit,CU)、分布式单元(distributed unit,DU)、定位节点等。基站可以是宏基站、微基站、中继节点、施主节点或类似物,或其组合。基站还可以指用于设置于前述设备或装置内的通信模块、调制解调器或芯片。基站还可以是移动交换中心以及设备到设备D2D、车辆外联(vehicle-to-everything,V2X)、机器到机器(machine-to-machine,M2M)通信中承担基站功能的设备、6G网络中的网络侧设备、未来的通信系统中承担基站功能的设备等。基站可以支持相同或不同接入技术的网络。本申请的实施例对网络设备所采用的具体技术和具体设备形态不做限定。
基站可以是固定的,也可以是移动的。例如,直升机或无人机可以被配置成充当移动基站,一个或多个小区可以根据该移动基站的位置移动。在其他示例中,直升机或无人机可以被配置成用作与另一基站通信的设备。
在一些部署中,本申请实施例中的网络设备可以是指CU或者DU,或者,网络设备包括CU和DU。gNB还可以包括AAU。
网络设备和终端设备可以部署在陆地上,包括室内或室外、手持或车载;也可以部署在水面上;还可以部署在空中的飞机、气球和卫星上。本申请实施例中对网络设备和终端设备所处的场景不做限定。
应理解,本申请中的通信设备的全部或部分功能也可以通过在硬件上运行的软件功能来实现,或者通过平台(例如云平台)上实例化的虚拟化功能来实现。
上行码本传输
终端设备和网络设备交互的过程中,可以对数据进行预编码处理。预编码处理可以使数据获得预编码增益。预编码处理可以分为两个部分:模拟域处理和数字域处理。模拟域处理针对发送的模拟信号,可以将射频信号映射到物理天线上。例如,模拟域处理可以通过波束赋形的方式实现。数字域处理针对数字信号,可以将传输层的数据映射到射频端口上。数字域处理可以在基带进行,例如采用预编码矩阵对数字信号进行预编码。
对于终端设备而言,终端设备向网络设备发送上行数据时,可以对上行数据进行预编码处理。预编码处理可以使上行数据获得上行预编码增益。例如,针对物理上行共享信道(physical uplink share channel,PUSCH),终端设备可以对PUSCH进行预编码。
由于终端设备的射频通道数量有限,终端设备对上行数据进行预编码处理时,可以同时采用上述两种处理方式。也就是说,终端设备可以对数字信号进行预编码,再对模拟信号采用波束进行赋形。
对于上行数据传输,可以分为基于码本的传输和基于非码本的传输。对于基于码本的传输,码本中的一个码字可以对应一个预编码矩阵。基于码本的传输和基于非码本的传输的预编码方式不同。
下面以图2所示的上行基于码本的预编码方式为例,说明上行预编码的过程。
网络设备可以为终端设备配置专用于码本传输的探测参考信号(sounding reference signal,SRS)资源(resource)集合。图2是以该SRS资源集合中包括N个SRS资源为例进行说明的,N可以是大于或等于1的整数。
步骤S210,终端设备在N个SRS资源上发送SRS。其中,每个SRS资源上的SRS可以采用不同的波束传输。
步骤S220,网络设备从N个SRS资源中选择一个SRS资源(如可以是信号质量最好的SRS资源)。网络设备选择的SRS资源可以通过SRS资源指示(sounding reference signal resource indicator,SRI)进行指示。SRI指示的SRS资源还可以用于获得上行信道状态信息(channel state information,CSI)。网络设备还可以确定以下信息中的至少一个:预编码矩阵指示(precoding matrix indicator,PMI)、秩指示(rank indication,RI)或信道质量指示(channel quality indicator,CQI)。其中,PMI可以从一个码本中选择;RI或CQI可以基于选择的PMI获取。
步骤S230,网络设备通过下行控制信息(downlink control information,DCI)向终端设备发送以下中的一种或多种:SRI、发送秩指示(transmit rank indicator,TRI)、发送预编码矩阵指示(transmit precoding matrix indicator,TPMI)以及调制与编码方案(modulation and coding scheme,MCS)中的一个或多个。
步骤S240,终端设备可以基于TRI确定层数(number of layer),根据TRI和TPMI从码本中确定TPMI对应的上行的预编码矩阵(或预编码器(precoder))。
终端设备可以采用SRI指示的SRS资源相应的波束对数据进行模拟波束赋形。
步骤S250,终端设备将预编码后的上行数据以及解调参考信号(demodulatin reference signal,DMRS)发送至网络设备。
上行码本指示
TPMI所指示的预编码矩阵可以用于整个传输带宽上的PUSCH传输。也就是说,目前上行码本支持宽带的TPMI指示。具体地,DCI中若干比特可以用于指示TRI和TPMI。DCI中用于指示TRI和TPMI的比特数与天线端口数和最大的传输层数(maxRank)的取值相关。表1~表4示出了不同天线端口数和不同最大传输层数对应的TRI和TPMI的指示方式。其中,TRI可以用于指示传输层数(number of layer),TPMI可以用于指示预编码信息(precoding information)。此外,TRI指示的传输层数应当小于或等于最大的传输层数。在实际传输过程中,网络设备为终端设备发送的TRI的取值可以从1~maxRank中选择。
表1示出的是天线端口数为4,最大的传输层数为2、3或4时,TRI和TPMI的指示方式;表2示出的是天线端口数为4端口,最大的传输层数为1时TRI和TPMI的指示方式;表3示出的是天线端口数为2端口,最大的传输层数为2时TRI和TPMI的指示方式;表4示出的是天线端口数为2端 口,最大的传输层数为1时TRI和TPMI的指示方式。
表1~表4中的索引为比特域映射的索引(bit field mapped to index),表格中示出了对于不同类型的码本子集(codebookSubset),不同索引对应的TRI和TPMI指示。其中,码本子集可以为码本中与终端能力相关的至少一个子集,不同的终端能力可以使用不同的码本子集。码本子集例如可以包括全部且部分且非相干(fullyAndPartialAndNonCoherent)、部分且非相干(partialAndNonCoherent)以及非相干(nonCoherent)中的一个或多个。
需要说明的是,表1~表4仅为示例,表1~表4中的部分索引及其对应的TRI和TPMI可以被独立地实施,或者表1~表4中的部分索引可以与其它值组合在一起实施。这里提及的部分索引可以指表1~表4中的任一表格中的一个索引,取值相同的一行索引或多行索引。
下面对表格中的内容进行说明。以表1为例,第一列和第二列表示码本子集为全部且部分且非相干的情况下,比特域映射的索引对应的TRI和TPMI;第三列和第四列表示码本子集为部分且非相干的情况下,比特域映射的索引对应的TRI和TPMI;第五列和第六列表示码本子集为非相干的情况下,比特域映射的索引对应的TRI和TPMI。例如,若码本子集为全部且部分且非相干,比特域映射的索引为0,则指示TRI为1,TPMI为0。或者,若码本子集为全部且部分且非相干,比特域映射的索引为61,则指示TRI为4,TPMI为4。表2、表3和表4示出的内容与表1类似,这里不再赘述。
表1
Figure PCTCN2021123369-appb-000001
表2
Figure PCTCN2021123369-appb-000002
表3
Figure PCTCN2021123369-appb-000003
表4
Figure PCTCN2021123369-appb-000004
由表1可以看出,天线端口数为4端口且最大的传输层数为2、3或4时,在三种情况下,用于指示TRI和TPMI的比特数存在差异。在码本子集为全部且部分且非相干的情况下,比特域映射的索引可以为0~63,占用的比特数为6,即用于指示TRI和TPMI的比特数为6。在码本子集为部分且非相干的情况下,比特域映射的索引可以为0~31,占用的比特数为5,即用于指示TRI和TPMI的比特数为5。在码本子集为非相干的情况下,比特域映射的索引可以为0~15,占用的比特数为4,即用于指示TRI和TPMI的比特数为4。
由表2可以看出,天线端口数为4端口且最大的传输层数为1时,比特域映射的索引可以为0~31,占用的比特数为5,即用于指示TRI和TPMI的比特数为5。由表3可以看出,天线端口数为2端口且最大的传输层数为2时,比特域映射的索引可以为0~15,占用的比特数为4,即用于指示TRI和TPMI的比特数为4。由表4可以看出,天线端口数为2端口且最大的传输层数为1时,比特域映射的索引可以为0~7,占用的比特数为3,即用于指示TRI和TPMI的比特数为3。结合表1~表4,可以看出,比特域映射的索引的取值范围越大,DCI中用于指示TRI和TPMI的比特数越多。由此可知,天线端口数和最大的传输层数的取值不同,DCI中用于指示TRI和TPMI的比特数也不同。
在一个实施例中,表1-3中的TPMI只能指示宽带的预编码矩阵,导致预编码增益很有限。例如,除了宽带需要预编码之外,很多场合下,也需要对子带进行预编码(也可以称为频率选择性预编码)。 即,TPMI还无法支持子带的预编码。
为了解决上述问题,本申请提出了一种无线通信方法,下面对本申请实施例进行详细描述。
图3为本申请实施例提供的一种无线通信方法的示意性流程图。图3的方法是从终端设备和网络设备交互的角度进行描述的。该终端设备和网络设备可以是图1所示的终端设备和网络设备。该无线通信方法包括步骤S310~步骤S330。
步骤S310,终端设备接收网络设备发送的用于调度PUSCH的DCI。其中,该DCI中包含子带TPMI信息。
在一些实施例中,该DCI还可以包括TRI和/或宽带TPMI信息。
步骤S320,终端设备根据子带TPMI信息,从预设的码本中确定PUSCH占用的多个子带对应的预编码矩阵。终端设备可以基于所述预编码矩阵进行子带级别的预编码,形成预编码后的PUSCH。
步骤S330,网络设备接收终端设备发送的预编码后的PUSCH。
在本申请实施例提供的DCI包含子带TPMI信息,基于子带TPMI信息,终端设备可以进行子带级别的预编码,从而显著提高预编码增益。
上文结合表1~表4,详细描述了宽带TPMI的指示方式,如果仍然采用宽带TPMI的指示方法来指示子带TPMI,那么指示表格将会非常复杂,导致该表格的可用性和可读性很差。例如,若宽带包括16个子带,那么指示表格的规模将是表1~表4的16倍。针对该问题,本申请提出了一种针对子带TPMI的指示方法。
在一个实施例中,用于调度PUSCH的DCI中不仅包括子带TPMI信息,还可以包括TRI信息。终端设备可以根据该TRI信息,确定子带TPMI信息的比特数和/或子带TPMI信息指示的内容。
TRI信息可以用于指示PUSCH的传输层数。
TRI信息可以在DCI中独立指示(或独立编码)。例如,可以为TRI分配专用的信息域。或者,TRI信息可以与其他信息联合编码,即通过一个信息域同时指示TRI信息和其他信息。例如,可以将TRI信息与PUSCH的宽带TPMI联合编码,并通过同一信息域指示。将TRI信息和宽带TPMI联合编码可以节省DCI的信令开销。示例性地,假设DCI同时包括TRI信息、宽带TPMI信息、子带TPMI信息,则该DCI中的TRI信息、宽带TPMI信息、子带TPMI信息可以相互独立编码(即为TRI信息、宽带TPMI信息、子带TPMI信息分别分配专用的信息域)。或者,TRI信息可以与宽带TPMI信息联合编码,而子带TPMI信息独立编码。或者,TRI信息可以与子带TPMI信息联合编码,而宽带TPMI独立编码。
本申请实施例对子带TPMI信息所占的比特数的确定方式不做具体限定。例如,终端设备可以根据TRI信息确定子带TPMI信息所占的比特数。又如,如果DCI中包含宽带TPMI信息,则终端设备可以根据TRI信息和宽带TPMI信息确定子带TPMI信息所占的比特数。
作为一个示例,在DCI中包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为1,则子带TPMI信息的比特数可以为每子带1比特或2比特。
作为另一示例,在DCI中包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为2,则子带TPMI信息的比特数可以为每子带1比特或2比特。
作为又一示例,在DCI中包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为3,子带TPMI信息为每子带0比特或1比特。
作为又一示例,在DCI中包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为4,子带TPMI信息为0比特。
作为又一示例,在DCI中不包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为1,子带TPMI信息的比特数为每子带3比特或4比特。
作为又一示例,在DCI中不包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为2,子带TPMI信息为每子带2比特或3比特。
作为又一示例,在DCI中不包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为3,子带TPMI信息为0比特或每子带1比特或每子带2比特。
作为又一示例,在DCI中不包括宽带TPMI信息的情况下,如果TRI信息指示的传输层数为4,子带TPMI信息为0比特。
可以理解的是,在一些实施例中,如果DCI中包括宽带TPMI信息,则子带TPMI信息可以结合宽带TPMI信息和TRI信息共同获取。因此,当DCI中包括宽带TPMI信息时,子带TPMI信息的比特数可以比DCI中不包括宽带TPMI信息时子带TPMI信息的比特数少,从而可以节省信令的开销。
如表1~表4所示,TRI信息指示的层数越多,TPMI可选的项数越少。因此,TRI信息指示的层数越多,子带TPMI信息的比特数可以越少。
终端设备不仅可以根据TRI信息确定子带TPMI信息的比特数,也可以根据TRI信息确定子带TPMI信息指示的内容。子带TPMI信息指示的内容例如可以为TRI信息指示的码本中的一个码字。作为示例,当在所述TRI信息指示的传输层数为k时,所述子带TPMI信息指示秩(rank)k的码本中的一个码字。
可以理解的是,根据TRI信息,终端设备可以确定子带TPMI信息的比特数和子带TPMI信息指示的内容。例如,当TRI信息不同时,TRI指示的传输层数也不同,子带TPMI信息的比特数可以不同,且终端设备使用的码本也可以不同。
子带TPMI信息占用K个比特。在一些实施例中,K可以通过下述公式计算:K=N*M v。其中,N为PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与v对应的每个子带的TPMI比特数。
在一种实施方式中,N可以通过高层信令从若干个子带数量的候选取值中得到。
作为一个示例,终端设备可以通过无线资源控制(radio resource control,RRC)信令获得若干个子带数量的候选值,再通过媒体接入控制(medium access control,MAC)层信令从所述候选值中指示当前所使用的子带数量。例如,子带数量的候选取值为1-16,则网络设备可以通过RRC信令从该16个候选取值中选择4或8个取值,再通过2或3比特的MAC层信令从该4或8个取值中指示当前使用一个子带数量。作为另一示例,终端设备可以直接通过RRC信令从候选值中指示PUSCH占用的子带数量N。作为又一示例,MAC层信令从候选值中指示PUSCH占用的子带数量N。
在另一种实施方式中,终端设备可以根据PUSCH所在的带宽部分(band width part,BWP)的带宽确定PUSCH占用的子带数量N。可以理解的是,BWP和子带是两个不同的概念。通常来讲,在频域,子带的粒度小于或等于BWP的粒度。例如,一个BWP可以包括一个或多个子带。BWP的带宽越大,子带数量可以越多。作为示例,子带数量的最大值可以与BWP的带宽呈比例关系。例如,如果BWP的带宽为5M时子带数量的最大值为M,那么BWP的带宽为10M时子带数量的最大值可以为2*M,BWP的带宽为20M时子带数量的最大值可以为4*M,BWP的带宽为40M时子带数量的最大值可以为8*M。
作为一示例,N可以根据RRC信令和所述PUSCH所在的BWP的带宽得到。例如,如果PUSCH所在的BWP的带宽不同,则子带数量的候选取值也可以不同。以BWP的带宽为5M或20M为例进行说明。当所述BWP的带宽为5M时,所述子带数量的候选值可以为1、2、3、4、5、6、7或8中的任意一个。当所述BWP的带宽为20M时,所述子带数量的候选值可以是2、4、6、8、10、12、14或16中的任意一个。可以理解的是,对于不同的BWP带宽,相同的RRC信令所指示的子带数量的取值可以不同。需要说明的是,本申请不限制子带数量候选值以及候选值的数目,可以根据实际情况确定。
M v可以根据所述DCI中的TRI信息确定,或者根据TRI信息和宽带TPMI信息确定。例如,TRI信息指示的传输层数不同时,每个子带上的TPMI比特数也可以不同。或者,M v可以根据TRI信息和宽带TPMI信息确定。例如,在TRI信息和宽带TPMI信息通过同一个信息域指示的情况下,该信息域指示的取值不同,则每个子带上的TPMI比特数也可以不同。
在一些实施例中,TRI指示的传输层数不同,则其对应的子带TPMI信息的比特数可以不同。例如,针对一些子带预编码增益较小的传输层数,可以为子带TPMI信息分配较少的比特数。针对一些子带预编码增益较大的传输层数,可以为子带TPMI信息分配较多的比特数。上述子带TPMI信息的比特数的设置方式可以使得本申请的技术方案可以在提高子带预编码增益的基础上,尽可能降低子带TPMI信息的比特数,从而可以降低物理下行控制信道(physical downlink control channel,PDCCH)的负载,并保证PDCCH的传输性能。
在一些实施例中,DCI可以利用DCI预留的比特承载子带TPMI信息。下文对该DCI为所述子带TPMI信息预留的比特数的计算方式进行详细描述。
子带TPMI信息预留的比特数可以用X表示,则X可以由下述公式计算得到:X=N_m*max(M v)。
N_m为子带数量,在一些实施例中,N_m可以为高层信令指示的子带数量。或者,N_m可以为PUSCH所在的BWP的带宽允许的最大的子带数量。例如,N_m可以为PUSCH所在的BWP带宽上网络设备可以调度的最大的子带数量。
max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。例如,TRI指示的传输层数为1-4时对应的每个子带的TPMI比特数分别为M 1,M 2,M 3以及M 4,则max(M v)可以为M 1,M 2,M 3以及M 4中的最大值,即max(M v)=max{M 1,M 2,M 3,M 4}。
根据上述方案,本申请可以在DCI中按照最大的长度预留子带TPMI的比特数,从而使子带TPMI信息的信息域的长度是固定的。子带TPMI信息的信息域长度固定可以使承载子带TPMI信息的DCI长度固定。终端设备可以在检测前预先确定DCI的大小,从而不需要盲检DCI的大小,进而降低终端 设备的盲检复杂度。
在一些情况下,用于指示子带TPMI信息的比特数可能小于预留的比特数。本申请不限制预留的比特中不用于指示子带TPMI信息的比特位的用途。例如,可以将预留的比特中不用于指示子带TPMI信息的比特位置零。以当前TRI信息下子带TPMI信息占用的比特数为K个为例,若预留的比特数为X,则X比特中前K个比特可以为子带TPMI信息,后X-K个比特可以被置零。或者,所述预留的比特中不用于指示子带TPMI信息的比特位可以用于指示其他信息。
子带TPMI信息可以指示PUSCH占用的子带中的全部或部分子带的TPMI。如果第一条件满足,则所述子带TPMI信息可以指示所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件可以包括以下条件中的至少一个:
1)承载所述DCI的PDCCH的码率超过第一门限;
2)指示所述子带TPMI信息的初始比特数大于第二门限;
3)指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及
4)指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
其中,子带TPMI信息的初始比特数可以为PUSCH占用的全部的子带的TPMI的比特数。可以理解的是,当满足DCI中子带TPMI信息的初始比特数过大和/或子带TPMI信息的比特数比例过大时,即可以满足第一条件。当满足第一条件时,子带TPMI信息可以指示部分子带的TPMI,从而使子带TPMI信息的比特数小于子带TPMI信息的初始比特数。
对于上述子带TPMI信息指示部分子带的TPMI的技术方案,一方面,可以使得PDCCH的负载较为合理的,避免因为子带TPMI信息过大影响PDCCH的传输性能;另一方面,通过合理地丢弃部分TPMI,可以在降低PDCCH的比特数的同时尽可能使预编码增益不受影响。
需要说明的是,上述四种第一条件可以单独使用,也可以任意组合使用。例如,如果承载所述DCI的PDCCH的码率大于第一门限,或者,所述子带TPMI信息的初始比特数大于第二门限,则所述子带TPMI信息可以指示部分子带的TPMI。又例如,如果所述子带TPMI信息的初始比特数大于第二门限,且所述子带TPMI信息的初始比特数与所述DCI的总比特数的比值超过一定门限,则所述子带TPMI信息可以指示部分子带的TPMI。
第一门限、第二门限、第三门限或第四门限均可以称为第一条件关联的门限。第一条件关联的门限可以由网络设备配置或者由网络设备与终端预先约定。或者,针对不同的DCI格式,第一条件关联的门限可以不同。例如,DCI格式1_2的门限值可以比DCI格式1_1的门限值更低,从而保障超高可靠低时延通信(ultra-reliable&low latency communications,URLLC)的性能。
当子带TPMI信息指示PUSCH占用的子带中的部分子带时,可以根据子带索引或子带优先级等,确定子带TPMI信息具体指示全部子带中的哪部分。
作为一个示例,当子带TPMI信息指示PUSCH占用的子带中的部分子带时,子带TPMI信息可以指示PUSCH占用的子带中的偶数子带的TPMI。例如,所述子带TPMI信息只指示偶数子带的TPMI,不指示奇数子带的TPMI,即奇数子带的TPMI信息被丢弃。
作为另一个示例,当子带TPMI信息指示PUSCH占用的子带中的部分子带时,所述子带TPMI信息可以指示所述PUSCH占用的子带中的奇数子带的TPMI。例如,所述子带TPMI信息只指示奇数子带的TPMI,不指示偶数子带的TPMI,即偶数子带的TPMI信息被丢弃。
作为另一个示例,子带TPMI信息指示PUSCH占用的子带中的部分子带时,子带TPMI信息可以指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI。可选地,其他优先级较低的子带的TPMI信息可以被丢弃。
n可以为小于或等于使所述第一条件不满足的最大子带数量。例如,n可以为使第一条件不满足的最大子带数量。作为一种实施例,n可以为使PDCCH的码率不超过所述门限的最大子带数量。作为另一种实施例,n可以为子带TPMI信息的比特数不超过所述门限的最大子带数量。
可选地,子带的优先级可以基于如下方式中的一种或多种方式的组合确定:所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及,所述PUSCH占用的子带中的子带索引较大的子带的优 先级高于所述PUSCH占用的子带中的子带索引较小的子带。
对于子带TPMI信息中未指示TPMI的子带,本申请提供了一种确定预编码矩阵的方法。
在一种实施例中,第一子带不包含在所述部分子带之中,也就是说,子带TPMI信息中未指示第一子带的TPMI。第二子带为所述部分子带中与所述第一子带索引最接近的子带。则第一子带对应的预编码矩阵可以与第二子带对应的预编码矩阵相同。通过这种方法,终端设备可以在提高预编码增益的前提下,得到每个子带的预编码矩阵。
上述情况举例如下。如果所述部分子带为偶数子带(例如子带索引为0,2,4,……),则终端设备可以确定奇数子带(例如子带索引为1,3,5,……)的预编码矩阵为前一个(也可以是后一个)子带的TPMI对应的预编码矩阵。例如,如果子带索引为1的子带没有指示TPMI,即子带索引为1的子带为第一子带,则第二子带可以为子带索引为0或2的子带。那么,终端设备可以确认子带索引为1的子带的预编码矩阵与子带索引为0(也可以是2)的子带的预编码矩阵相同。如果所述部分子带为奇数子带,则终端设备可以确定偶数子带的预编码矩阵为后一个(也可以是前一个)子带的TPMI对应的预编码矩阵。例如,如果子带索引为2的子带没有指示TPMI,即子带索引为2的子带为第一子带,则第二子带可以为索引为1或3的子带。那么,终端设备可以确认子带索引为2的子带的预编码矩阵可以与子带索引为3(也可以是1)的子带的预编码矩阵相同。
终端设备可以根据子带TPMI信息,从预设的码本中确定所述PUSCH在各个子带上的预编码矩阵。
可选地,如果所述DCI中还包括宽带TPMI信息,终端设备可以根据所述宽带TPMI和目标子带的子带TPMI,从预设的码本中确定所述目标子带的预编码矩阵。其中,预设码本中的每个码字都可以根据宽带TPMI和子带TPMI两个参数得到,且子带TPMI信息和宽带TPMI信息与码本中的码字的映射关系可以预先约定。
可选地,如果所述DCI中不包含宽带TPMI信息,终端设备可以只根据所述子带TPMI信息,从预设的码本中确定所述PUSCH在各个子带的预编码矩阵。其中,子带TPMI信息与码本中的码字的映射关系可以预先约定。
上文结合图3,详细描述了本申请的方法实施例,下面结合图4至图6,详细描述本申请的装置实施例。应理解,方法实施例的描述与装置实施例的描述相互对应,因此,未详细描述的部分可以参见前面方法实施例。
图4是本申请实施例提供的终端设备的示意性结构图。图4的终端设备900包括接收单元410和第一确定单元420。
接收单元410可以被配置为接收用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息。
第一确定单元420可以被配置为根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
终端设备900还可以包括第二确定单元。第二确定单元可以被配置为根据所述DCI中的TRI信息,确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
可选地,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
可选地,所述子带TPMI信息占用K个比特,其中,K=N*M v,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与所传输层数对应的每个子带的TPMI比特数。
可选地,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的BWP的带宽得到的。
可选地,所述多个候选值是根据RRC信令得到的,且所述N由MAC层信令从所述多个候选值中指示。
可选地,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
可选地,所述M v是根据所述DCI中的TRI信息确定的;或者,所述M v是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
可选地,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(M v),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
可选地,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
可选地,如果第一条件满足,则所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件包括以下条件中的至少一个:承载所述DCI的PDCCH的码率超过第一门限;指 示所述子带TPMI信息的初始比特数大于第二门限;指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
可选地,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
可选地,所述PUSCH占用的子带的优先级基于如下方式中的一种或多种方式的组合确定:所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
可选地,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
可选地,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
可选地,所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵,包括:如果所述DCI中包括宽带TPMI信息,则所述终端设备根据所述宽带TPMI信息和所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵。
图5是本申请实施例提供的网络设备的示意性结构图。图5的网络设备500包括发送单元510和接收单元520。
发送单元510可以被配置为用于调度PUSCH的DCI,所述DCI中包含子带TPMI信息,所述子带TPMI信息用于终端设备从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
接收单元520可以被配置为接收基于所述预编码矩阵进行预编码后的所述PUSCH。
可选地,所述DCI中包括TRI信息,所述TRI信息用于所述终端设备确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
可选地,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
可选地,所述子带TPMI信息占用K个比特,其中,K=N*Mv,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,Mv为与所传输层数对应的每个子带的TPMI比特数。
可选地,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的BWP的带宽得到的。
可选地,所述多个候选值是根据RRC信令得到的,且所述N由MAC层信令从所述多个候选值中指示。
可选地,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
可选地,所述Mv是根据所述DCI中的TRI信息确定的;或者,所述Mv是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
可选地,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(Mv),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(Mv)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
可选地,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
可选地,如果第一条件满足,则所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的 TPMI,所述第一条件包括以下条件中的至少一个:承载所述DCI的PDCCH的码率超过第一门限;指示所述子带TPMI信息的初始比特数大于第二门限;指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
可选地,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
可选地,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
可选地,所述PUSCH占用的子带的优先级基于如下方式中的一种或多种方式的组合确定:所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
可选地,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
可选地,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
图6是本申请实施例的通信装置的示意性结构图。图6中的虚线表示该单元或模块为可选的。该装置600可用于实现上述方法实施例中描述的方法。装置600可以是芯片、终端设备或网络设备。
装置600可以包括一个或多个处理器610。该处理器610可支持装置600实现前文方法实施例所描述的方法。该处理器610可以是通用处理器或者专用处理器。例如,该处理器可以为中央处理单元(central processing unit,CPU)。或者,该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor,DSP)、专用集成电路(application specific integrated circuit,ASIC)、现成可编程门阵列(field programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
装置600还可以包括一个或多个存储器620。存储器620上存储有程序,该程序可以被处理器610执行,使得处理器610执行前文方法实施例所描述的方法。存储器620可以独立于处理器610也可以集成在处理器610中。
装置600还可以包括收发器630。处理器610可以通过收发器630与其他设备或芯片进行通信。例如,处理器610可以通过收发器630与其他设备或芯片进行数据收发。
本申请实施例还提供一种计算机可读存储介质,用于存储程序。该计算机可读存储介质可应用于本申请实施例提供的终端或网络设备中,并且该程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
本申请实施例还提供一种计算机程序产品。该计算机程序产品包括程序。该计算机程序产品可应用于本申请实施例提供的终端或网络设备中,并且该程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
本申请实施例还提供一种计算机程序。该计算机程序可应用于本申请实施例提供的终端或网络设备中,并且该计算机程序使得计算机执行本申请各个实施例中的由终端或网络设备执行的方法。
应理解,本申请中术语“系统”和“网络”可以被可互换使用。另外,本申请使用的术语仅用于对本申请的具体实施例进行解释,而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。
在本申请的实施例中,提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间 接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例中,“与A相应的B”表示B与A相关联,根据A可以确定B。但还应理解,根据A确定B并不意味着仅仅根据A确定B,还可以根据A和/或其它信息确定B。
在本申请实施例中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
本申请实施例中,“预定义”或“预配置”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中,所述“协议”可以指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
本申请实施例中术语“和/或”,仅仅是一种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。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
在本申请的各种实施例中,上述各过程的序号的大小并不意味着执行顺序的先后,各过程的执行顺序应以其功能和内在逻辑确定,而不应对本申请实施例的实施过程构成任何限定。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时,全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line,DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够读取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,(例如,软盘、硬盘、磁带)、光介质(例如,数字通用光盘(digital video disc,DVD))或者半导体介质(例如,固态硬盘(solid state disk,SSD))等。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应以所述权利要求的保护范围为准。

Claims (86)

  1. 一种无线通信的方法,其特征在于,包括:
    终端设备接收用于调度物理上行共享信道PUSCH的下行控制信息DCI,所述DCI中包含子带发送预编码矩阵指示TPMI信息;
    所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
  2. 根据权利要求1所述的方法,其特征在于,所述方法还包括:
    所述终端设备根据所述DCI中的发送秩指示TRI信息,确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
  3. 根据权利要求2所述的方法,其特征在于,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
  4. 根据权利要求1-3中任一项所述的方法,其特征在于,所述子带TPMI信息占用K个比特,其中,K=N*M v,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与所传输层数对应的每个子带的TPMI比特数。
  5. 根据权利要求4所述的方法,其特征在于,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的带宽部分BWP的带宽得到的。
  6. 根据权利要求5所述的方法,其特征在于,所述多个候选值是根据无线资源控制RRC信令得到的,且所述N由媒体接入控制MAC层信令从所述多个候选值中指示。
  7. 根据权利要求5所述的方法,其特征在于,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
  8. 根据权利要求4-7中任一项所述的方法,其特征在于,所述M v是根据所述DCI中的TRI信息确定的;或者,所述M v是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
  9. 根据权利要求1-8中任一项所述的方法,其特征在于,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(M v),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
  10. 根据权利要求9所述的方法,其特征在于,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
  11. 根据权利要求1-10中任一项所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
  12. 根据权利要求11所述的方法,其特征在于,如果第一条件满足,则所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件包括以下条件中的至少一个:
    承载所述DCI的物理下行控制信道PDCCH的码率超过第一门限;
    指示所述子带TPMI信息的初始比特数大于第二门限;
    指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及
    指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
  13. 根据权利要求12所述的方法,其特征在于,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
  14. 根据权利要求11-13中任一项所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
  15. 根据权利要求12或13所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
  16. 根据权利要求15所述的方法,其特征在于,所述PUSCH占用的子带的优先级基于如下方式中的一种或多种方式的组合确定:
    所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;
    所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;
    所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;
    所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;
    所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及
    所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
  17. 根据权利要求11-16中任一项所述的方法,其特征在于,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
  18. 根据权利要求11-16中任一项所述的方法,其特征在于,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,
    如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
  19. 根据权利要求1-18中任一项所述的方法,其特征在于,所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵,包括:
    如果所述DCI中包括宽带TPMI信息,则所述终端设备根据所述宽带TPMI信息和所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵。
  20. 一种无线通信的方法,其特征在于,包括:
    网络设备发送用于调度物理上行共享信道PUSCH的下行控制信息DCI,所述DCI中包含子带发送预编码矩阵指示TPMI信息,所述子带TPMI信息用于终端设备从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵;
    所述网络设备接收基于所述预编码矩阵进行预编码后的所述PUSCH。
  21. 根据权利要求20所述的方法,其特征在于,所述DCI中包括发送秩指示TRI信息,所述TRI信息用于所述终端设备确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
  22. 根据权利要求21所述的方法,其特征在于,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
  23. 根据权利要求20-22中任一项所述的方法,其特征在于,所述子带TPMI信息占用K个比特,其中,K=N*M v,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与所传输层数对应的每个子带的TPMI比特数。
  24. 根据权利要求23所述的方法,其特征在于,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的带宽部分BWP的带宽得到的。
  25. 根据权利要求24所述的方法,其特征在于,所述多个候选值是根据无线资源控制RRC信令得到的,且所述N由媒体接入控制MAC层信令从所述多个候选值中指示。
  26. 根据权利要求24所述的方法,其特征在于,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
  27. 根据权利要求23-26中任一项所述的方法,其特征在于,所述M v是根据所述DCI中的TRI信息确定的;或者,所述M v是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
  28. 根据权利要求20-27中任一项所述的方法,其特征在于,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(M v),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
  29. 根据权利要求28所述的方法,其特征在于,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
  30. 根据权利要求20-29中任一项所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
  31. 根据权利要求30所述的方法,其特征在于,如果第一条件满足,则所述子带TPMI信息指示 所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件包括以下条件中的至少一个:
    承载所述DCI的物理下行控制信道PDCCH的码率超过第一门限;
    指示所述子带TPMI信息的初始比特数大于第二门限;
    指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及
    指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
  32. 根据权利要求31所述的方法,其特征在于,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
  33. 根据权利要求30-32中任一项所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
  34. 根据权利要求31或32所述的方法,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
  35. 根据权利要求34所述的方法,其特征在于,所述PUSCH占用的子带的优先级基于如下方式中的一种或多种方式的组合确定:
    所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;
    所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;
    所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;
    所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;
    所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及
    所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
  36. 根据权利要求30-35中任一项所述的方法,其特征在于,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
  37. 根据权利要求30-35中任一项所述的方法,其特征在于,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,
    如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
  38. 一种终端设备,其特征在于,包括:
    接收单元,被配置为接收用于调度物理上行共享信道PUSCH的下行控制信息DCI,所述DCI中包含子带发送预编码矩阵指示TPMI信息;
    第一确定单元,被配置为根据所述子带TPMI信息,从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵。
  39. 根据权利要求38所述的终端设备,其特征在于,所述终端设备还包括:
    第二确定单元,被配置为根据所述DCI中的发送秩指示TRI信息,确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
  40. 根据权利要求39所述的终端设备,其特征在于,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
  41. 根据权利要求38-40中任一项所述的终端设备,其特征在于,所述子带TPMI信息占用K个比特,其中,K=N*M v,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与所传输层数对应的每个子带的TPMI比特数。
  42. 根据权利要求41所述的终端设备,其特征在于,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的带宽部分BWP的带宽得到的。
  43. 根据权利要求42所述的终端设备,其特征在于,所述多个候选值是根据无线资源控制RRC信令得到的,且所述N由媒体接入控制MAC层信令从所述多个候选值中指示。
  44. 根据权利要求43所述的终端设备,其特征在于,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
  45. 根据权利要求41-43中任一项所述的终端设备,其特征在于,所述M v是根据所述DCI中的TRI信息确定的;或者,所述M v是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
  46. 根据权利要求38-45中任一项所述的终端设备,其特征在于,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(M v),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
  47. 根据权利要求46所述的终端设备,其特征在于,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
  48. 根据权利要求38-47中任一项所述的终端设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
  49. 根据权利要求48所述的终端设备,其特征在于,如果第一条件满足,则所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件包括以下条件中的至少一个:
    承载所述DCI的物理下行控制信道PDCCH的码率超过第一门限;
    指示所述子带TPMI信息的初始比特数大于第二门限;
    指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及
    指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
  50. 根据权利要求49所述的终端设备,其特征在于,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
  51. 根据权利要求48-50中任一项所述的终端设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
  52. 根据权利要求49或50所述的终端设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
  53. 根据权利要求52所述的终端设备,其特征在于,所述PUSCH占用的子带的优先级基于如下方式中的一种或多种方式的组合确定:
    所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;
    所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;
    所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;
    所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;
    所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及
    所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
  54. 根据权利要求48-53中任一项所述的终端设备,其特征在于,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
  55. 根据权利要求48-53中任一项所述的终端设备,其特征在于,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,
    如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数 子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
  56. 根据权利要求38-55中任一项所述的终端设备,其特征在于,所述终端设备根据所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵,包括:
    如果所述DCI中包括宽带TPMI信息,则所述终端设备根据所述宽带TPMI信息和所述子带TPMI信息,从预设的码本中确定所述一个或多个子带对应的预编码矩阵。
  57. 一种网络设备,其特征在于,包括:
    发送单元,被配置为用于调度物理上行共享信道PUSCH的下行控制信息DCI,所述DCI中包含子带发送预编码矩阵指示TPMI信息,所述子带TPMI信息用于终端设备从预设的码本中确定所述PUSCH占用的多个子带对应的预编码矩阵;
    接收单元,被配置为接收基于所述预编码矩阵进行预编码后的所述PUSCH。
  58. 根据权利要求57所述的网络设备,其特征在于,所述DCI中包括发送秩指示TRI信息,所述TRI信息用于所述终端设备确定所述子带TPMI信息占用的比特数和/或所述子带TPMI信息指示的内容。
  59. 根据权利要求58所述的网络设备,其特征在于,所述TRI信息与所述PUSCH的宽带TPMI信息通过同一个信息域指示。
  60. 根据权利要求57-59中任一项所述的网络设备,其特征在于,所述子带TPMI信息占用K个比特,其中,K=N*M v,N为所述PUSCH占用的子带的数量,v为所述DCI中的TRI信息所指示的传输层数,M v为与所传输层数对应的每个子带的TPMI比特数。
  61. 根据权利要求60所述的网络设备,其特征在于,所述N是根据高层信令从多个候选取值中得到的,或者,所述N是根据所述PUSCH所在的带宽部分BWP的带宽得到的。
  62. 根据权利要求61所述的网络设备,其特征在于,所述多个候选值是根据无线资源控制RRC信令得到的,且所述N由媒体接入控制MAC层信令从所述多个候选值中指示。
  63. 根据权利要求61所述的网络设备,其特征在于,所述PUSCH所在的BWP的带宽不同,所述PUSCH占用的子带的数量的候选值不同。
  64. 根据权利要求60-63中任一项所述的网络设备,其特征在于,所述M v是根据所述DCI中的TRI信息确定的;或者,所述M v是根据所述DCI中的TRI信息和宽带TPMI信息确定的。
  65. 根据权利要求57-64中任一项所述的网络设备,其特征在于,所述DCI包括为所述子带TPMI信息预留的X个比特,其中X=N_m*max(M v),N_m为高层信令指示的子带数量,或者为所述PUSCH所在的BWP的带宽允许的最大的子带数量,max(M v)为不同TRI指示情况下每个子带的TPMI比特数的最大值。
  66. 根据权利要求65所述的网络设备,其特征在于,如果所述X个比特包括不用于指示所述子带TPMI信息的至少一个比特,所述至少一个比特被置为零,或者所述至少一个比特用于指示除所述子带TPMI信息之外的其他信息。
  67. 根据权利要求57-66中任一项所述的网络设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI。
  68. 根据权利要求67所述的网络设备,其特征在于,如果第一条件满足,则所述子带TPMI信息指示所述PUSCH占用的子带中的部分子带的TPMI,所述第一条件包括以下条件中的至少一个:
    承载所述DCI的物理下行控制信道PDCCH的码率超过第一门限;
    指示所述子带TPMI信息的初始比特数大于第二门限;
    指示所述子带TPMI信息的初始比特数与第二比特数的比值大于第三门限,其中,所述第二比特数为所述DCI中的其他信息的比特数之和;以及
    指示所述子带TPMI信息的初始比特数与第三比特数的比值大于第四门限,其中,所述第三比特数为所述DCI的总比特数。
  69. 根据权利要求68所述的网络设备,其特征在于,所述第一条件关联的门限由网络设备配置,或者由网络设备与所述终端设备预先约定。
  70. 根据权利要求67-69中任一项所述的网络设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的偶数子带的TPMI;或者,所述子带TPMI信息指示所述PUSCH占用的子带中的奇数子带的TPMI。
  71. 根据权利要求68或69所述的网络设备,其特征在于,所述子带TPMI信息指示所述PUSCH占用的子带中的优先级最高的n个子带的TPMI,其中,n小于或等于使所述第一条件不满足的最大子带数量。
  72. 根据权利要求71所述的网络设备,其特征在于,所述PUSCH占用的子带的优先级基于如下 方式中的一种或多种方式的组合确定:
    所述PUSCH占用的子带中的偶数子带的优先级高于所述PUSCH占用的子带中的奇数子带的优先级;
    所述PUSCH占用的子带中的奇数子带的优先级高于所述PUSCH占用的子带中的偶数子带的优先级;
    所述PUSCH占用的子带中的子带索引较小的子带的优先级高于所述PUSCH占用的子带中的子带索引较大的子带;
    所述PUSCH占用的偶数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的偶数子带中的子带索引较大的子带;
    所述PUSCH占用的奇数子带中的子带索引较小的子带的优先级高于所述PUSCH占用的奇数子带中的子带索引较大的子带;以及
    所述PUSCH占用的子带中的子带索引较大的子带的优先级高于所述PUSCH占用的子带中的子带索引较小的子带。
  73. 根据权利要求67-72中任一项所述的网络设备,其特征在于,所述PUSCH占用的子带中的第一子带对应的预编码矩阵与第二子带对应的预编码矩阵相同,其中,第一子带不包含在所述部分子带之中,所述第二子带为所述部分子带中与所述第一子带索引最接近的子带。
  74. 根据权利要求67-72中任一项所述的网络设备,其特征在于,如果所述部分子带为所述PUSCH占用的子带中的偶数子带,则所述PUSCH占用的子带中的奇数子带对应的预编码矩阵与所述奇数子带的前一个子带或后一个子带对应的预编码矩阵相同;或者,
    如果所述部分子带为所述PUSCH占用的子带中的奇数子带,则所述PUSCH占用的子带中的偶数子带对应的预编码矩阵为所述偶数子带的前一个子带或后一个子带对应的预编码矩阵。
  75. 一种终端设备,其特征在于,包括存储器和处理器,所述存储器用于存储程序,所述处理器用于调用所述存储器中的程序,以执行如权利要求1-19中任一项所述的方法。
  76. 一种网络设备,其特征在于,包括存储器和处理器,所述存储器用于存储程序,所述处理器用于调用所述存储器中的程序,以执行如权利要求20-37中任一项所述的方法。
  77. 一种装置,其特征在于,包括处理器,用于从存储器中调用程序,以执行如权利要求1-19中任一项所述的方法。
  78. 一种装置,其特征在于,包括处理器,用于从存储器中调用程序,以执行如权利要求20-37中任一项所述的方法。
  79. 一种芯片,其特征在于,包括处理器,用于从存储器调用程序,使得安装有所述芯片的设备执行如权利要求1-19中任一项所述的方法。
  80. 一种芯片,其特征在于,包括处理器,用于从存储器调用程序,使得安装有所述芯片的设备执行如权利要求20-37中任一项所述的方法。
  81. 一种计算机可读存储介质,其特征在于,其上存储有程序,所述程序使得计算机执行如权利要求1-19中任一项所述的方法。
  82. 一种计算机可读存储介质,其特征在于,其上存储有程序,所述程序使得计算机执行如权利要求20-37中任一项所述的方法。
  83. 一种计算机程序产品,其特征在于,包括程序,所述程序使得计算机执行如权利要求1-19中任一项所述的方法。
  84. 一种计算机程序产品,其特征在于,包括程序,所述程序使得计算机执行如权利要求20-37中任一项所述的方法。
  85. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1-19中任一项所述的方法。
  86. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求20-37中任一项所述的方法。
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