WO2024067244A1 - Procédé et appareil d'envoi de données - Google Patents

Procédé et appareil d'envoi de données Download PDF

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Publication number
WO2024067244A1
WO2024067244A1 PCT/CN2023/119661 CN2023119661W WO2024067244A1 WO 2024067244 A1 WO2024067244 A1 WO 2024067244A1 CN 2023119661 W CN2023119661 W CN 2023119661W WO 2024067244 A1 WO2024067244 A1 WO 2024067244A1
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WIPO (PCT)
Prior art keywords
field
port set
dmrs port
data streams
terminal device
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PCT/CN2023/119661
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English (en)
Chinese (zh)
Inventor
杨培
李铁
陈雷
樊波
余政
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华为技术有限公司
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Publication of WO2024067244A1 publication Critical patent/WO2024067244A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the present application relates to the field of communications, and more specifically, to a method and device for transmitting data.
  • the fifth generation (5G) new radio uses beamforming (BF) technology to increase the transmit power of the signal in the transmit direction and improve the received signal to interference plus noise ratio (SINR), thereby improving the performance of the communication system.
  • the antenna panel is the core component, and the beam is sent or received through the antenna panel.
  • 5G NR due to the use of directional beams, in order to meet wide area coverage, base stations and terminal devices are deployed with multiple antenna panels.
  • R18 proposes that the terminal equipment uses two antenna panels to transmit data streams to the base station on the physical uplink shared channel (PUSCH).
  • the number of streams transmitted to the base station by using two antenna panels supports 1+1, 2+1 and 2+2; however, how to support the number of streams transmitted to the base station by using two antenna panels as 1+2 needs to be solved urgently.
  • the current protocol cannot support the dynamic switching of multi-antenna panel and single antenna panel transmission.
  • the present application provides a method and apparatus for data transmission, which can support a data stream combination of 1+2 for data streams transmitted from two antenna panels of a terminal device to a network device, thereby improving data transmission reliability.
  • a method for data transmission which can be performed by a chip or chip system on a terminal device side.
  • the method includes: a terminal device receives first information from a network device, the first information includes a first field and a second field, the first field is used to indicate the first number of data streams sent by the terminal device according to the first precoding matrix and the second number of data streams sent according to the second precoding matrix, wherein the first number and the second number are positive integers; the terminal device determines a first demodulation reference signal DMRS port set and a second DMRS port set according to a third number and the second field, the total number of DMRS ports included in the first DMRS port set and the second DMRS port set is equal to the third number, wherein the third number is equal to the sum of the first number and the second number; the terminal device sends the first number of data streams to the network device according to the first DMRS port set, and sends the second number of data streams to the network device according to the second DMRS port
  • the terminal device sends the first number of data streams to the network device according to the first DMRS port set, and the terminal device sends the second number of data streams to the network device according to the second DMRS port set.
  • the terminal device sends the first number of data streams to the network device according to the second DMRS port set, and sends the second number of data streams to the network device according to the first DMRS port set.
  • the terminal device can determine the first number of data streams sent according to the first precoding matrix (first antenna panel) and the second number of data streams sent according to the second precoding matrix (second antenna panel) according to the first information sent by the network device.
  • the terminal device can send the first number of data streams to the network device according to a DMRS port set including a number of DMRS ports equal to the first number, and send the second number of data streams to the network device according to a DMRS port set including a number of DMRS ports equal to the second number.
  • the embodiment of the present application can not only support the combination of 2+1 of the number of data streams transmitted by the terminal device to the network device using 2 antenna panels, but also support the combination of 1+2 of the number of data streams transmitted by the terminal device to the network device using 2 antenna panels, thereby improving the reliability of data transmission.
  • the DMRS port set ⁇ 0, 2, 3 ⁇ is added to the DMRS table.
  • the embodiment of the present application does not need to add a DMRS port set ⁇ 0, 2, 3 ⁇ in the DMRS table. Adding the DMRS port set ⁇ 0, 2, 3 ⁇ to the table can make the R18 protocol compatible/reuse the R17 protocol, thereby improving the compatibility of the R18 protocol.
  • the method also includes: the terminal device receives second information from the network device, the second information includes a third field and a fourth field, the third field is used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer; the terminal device determines a third DMRS port set based on the fourth number and the fourth field, the number of DMRS ports included in the third DMRS port set being equal to the fourth number; the terminal device sends the fourth number of data streams to the network device according to the third DMRS port set.
  • the terminal device can determine to use a single antenna panel to send a data stream to the network device according to the second information sent by the network device, thereby realizing dynamic switching between multi-antenna panel transmission and single antenna panel transmission.
  • the first field and the third field include precoding information and a stream number field, or a channel sounding reference signal resource indication SRI field, and the second field and the fourth field include an antenna port field.
  • a method for data transmission which can be executed by a chip or chip system on the network device side.
  • the method includes: the network device sends first information to the terminal device, the first information includes a first field and a second field, the first field is used to indicate the first number of data streams sent by the terminal device according to the first precoding matrix and the second number of data streams sent according to the second precoding matrix, and the second field is used by the terminal device to determine a first DMRS port set and a second DMRS port set, wherein the first number and the second number are positive integers; the network device receives the first number of data streams from the terminal device according to the first DMRS port set, and receives the second number of data streams from the terminal device according to the second DMRS port set, the number of DMRS ports included in the first DMRS port set is equal to the first number, the number of DMRS ports included in the second DMRS port set is equal to the second number, and the first number is not equal to the second number.
  • the method provided in the second aspect is a network-side method corresponding to the first aspect, and its beneficial effects can be directly referred to the first aspect.
  • the method also includes: the network device sends second information to the terminal device, the second information includes a third field and a fourth field, the third field is used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, and the fourth field is used by the terminal device to determine a third DMRS port set, wherein the third number is equal to zero and the fourth number is a positive integer; the network device receives the fourth number of data streams from the terminal device according to the third DMRS port set, and the number of DMRS ports included in the third DMRS port set is equal to the fourth number.
  • the first field and the third field include precoding information and a stream number field, or, an SRI field
  • the second field and the fourth field include an antenna port field.
  • a method for data transmission which can be executed by a chip or chip system on the terminal device side.
  • the method includes: the terminal device receives second information from a network device, the second information includes a third field and a fourth field, the third field is used to indicate the third number of data streams sent by the terminal device according to the third precoding matrix and the fourth number of data streams sent according to the fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer; the terminal device determines a third DMRS port set according to the fourth number and the fourth field, the number of DMRS ports included in the third DMRS port set is equal to the fourth number; the terminal device sends the fourth number of data streams to the network device according to the third DMRS port set.
  • the terminal device can determine to use a single antenna panel to send a data stream to the network device according to the second information sent by the network device, thereby realizing dynamic switching between multi-antenna panel transmission and single antenna panel transmission.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • a method for data transmission which can be executed by a chip or chip system on the network device side.
  • the method includes: the network device sends second information to the terminal device, the second information includes a third field and a fourth field, the third field is used to indicate the third number of data streams sent by the terminal device according to the third precoding matrix and the fourth number of data streams sent according to the fourth precoding matrix, and the fourth field is used by the terminal device to determine a third DMRS port set, wherein the third number is equal to zero and the fourth number is a positive integer; the network device receives the fourth number of data streams from the terminal device according to the third DMRS port set, and the number of DMRS ports included in the third DMRS port set is equal to the fourth number.
  • the method provided in the fourth aspect is a network-side method corresponding to the third aspect, and its beneficial effects can be directly referred to the third aspect.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • a communication device which can be applied to the terminal device described in the first aspect, and the device includes: a transceiver unit, used to receive first information from a network device, the first information includes a first field and a second field, the first field is used to indicate a first number of data streams sent according to a first precoding matrix and a second number of data streams sent according to a second precoding matrix, wherein the first number and the second number are positive integers; a processing unit, used to determine a first demodulation reference signal DMRS port set and a second DMRS port set according to a third number and the second field, the total number of DMRS ports included in the first DMRS port set and the second DMRS port set is equal to the third number, wherein the third number is equal to the sum of the first number and the second number; the transceiver unit is also used to send the first number of data streams to the network device according to the first DMRS port set, and send the second number of data streams to the network device
  • the transceiver unit is further used to receive second information from the network device, the second information including a third field and a fourth field, the third field being used to indicate a third number of data streams sent according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer; the processing unit is further used to determine a third DMRS port set based on the fourth number and the fourth field, the number of DMRS ports included in the third DMRS port set being equal to the fourth number; the transceiver unit is further used to send the fourth number of data streams to the network device according to the third DMRS port set.
  • the first field and the third field include precoding information and a stream number field, or, an SRI field
  • the second field and the fourth field include an antenna port field.
  • a communication device which can be applied to the network device described in the second aspect, and the device includes: a transceiver unit, used to send first information to a terminal device, the first information including a first field and a second field, the first field is used to indicate a first number of data streams sent by the terminal device according to a first precoding matrix and a second number of data streams sent according to a second precoding matrix, and the second field is used by the terminal device to determine a first DMRS port set and a second DMRS port set, wherein the first number and the second number are positive integers; the transceiver unit is also used to receive the first number of data streams from the terminal device according to the first DMRS port set, and to receive the second number of data streams from the terminal device according to the second DMRS port set, the number of DMRS ports included in the first DMRS port set is equal to the first number, the number of DMRS ports included in the second DMRS port set is equal to the second number, and
  • the transceiver unit is further used to: send second information to the terminal device, the second information including a third field and a fourth field, the third field being used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, the fourth field being used by the terminal device to determine a third DMRS port set, wherein the third number is equal to zero and the fourth number is a positive integer; receive the fourth number of data streams from the terminal device according to the third DMRS port set, the number of DMRS ports included in the third DMRS port set being equal to the fourth number.
  • the first field and the third field include precoding information and a stream number field, or, an SRI field
  • the second field and the fourth field include an antenna port field.
  • a communication device which can be applied to the terminal device described in the third aspect, and the device includes: a transceiver unit, used to receive second information from a network device, the second information includes a third field and a fourth field, the third field is used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer; a processing unit, used to determine a third DMRS port set according to the fourth number and the fourth field, the number of DMRS ports included in the third DMRS port set being equal to the fourth number; the transceiver unit is also used to send the fourth number of data streams to the network device according to the third DMRS port set.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • a communication device which can be applied to the network device described in the fourth aspect, and the device includes: a transceiver unit, configured to send second information to a terminal device, wherein the second information includes a third field and a fourth field, and the third field is used to indicate a third number of data streams sent by the terminal device according to the third precoding matrix and a third number of data streams sent according to the fourth precoding matrix.
  • the fourth field is used by the terminal device to determine a third DMRS port set, wherein the third number is equal to zero and the fourth number is a positive integer; the transceiver unit is also used to receive the fourth number of data streams from the terminal device according to the third DMRS port set, and the number of DMRS ports included in the third DMRS port set is equal to the fourth number.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • a communication device comprising: a processor and a memory storing computer code or instructions, wherein the processor runs the computer code or instructions so that the method in any possible implementation of the first aspect to the fourth aspect or the first aspect to the fourth aspect is executed by the communication device.
  • a communication system comprising: the terminal device in the method described in the first aspect or the third aspect and other communication devices that communicate with the terminal device; the network device in the method described in the second aspect or the fourth aspect and other communication devices that communicate with the network device.
  • a computer-readable storage medium stores computer code or instructions; when the computer code or instructions are executed by a processor, the method in the above-mentioned first to fourth aspects and any possible implementation of the first to fourth aspects is executed.
  • a computer program product comprising computer codes or instructions, which, when executed, enable the communication method in the above-mentioned first to fourth aspects and any possible implementation method of the first to fourth aspects to be implemented.
  • FIG1 is a schematic diagram of a network architecture applicable to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of two typical antenna panels.
  • FIG3 is a schematic flow chart of an interaction of a method for sending data provided in an embodiment of the present application.
  • FIG4 is a schematic flow chart of another method for sending data provided in an embodiment of the present application.
  • 5 to 8 are schematic block diagrams of communication devices according to embodiments of the present application.
  • FIG. 9 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG10 is a schematic block diagram of another communication device according to an embodiment of the present application.
  • the embodiments of the present application can be applied to various communication systems, such as wireless local area network (WLAN), narrowband Internet of Things (NB-IoT), global system for mobile communications (GSM), enhanced data rate for GSM evolution (EDGE), wideband code division multiple access (WCDMA), code division multiple access 2000 (CDMA2000), time division-synchronization code division multiple access (TD-SCDMA), long term evolution (LTE), satellite communication, sidelink (SL), fifth generation (5G) system, or new communication systems that will appear in the future.
  • WLAN wireless local area network
  • NB-IoT global system for mobile communications
  • EDGE enhanced data rate for GSM evolution
  • WCDMA wideband code division multiple access
  • CDMA2000 code division multiple access 2000
  • TD-SCDMA time division-synchronization code division multiple access
  • LTE long term evolution
  • satellite communication sidelink (SL), fifth generation (5G) system, or new communication systems that will appear in the future.
  • 5G fifth generation
  • the embodiments of the present application can be applied to a variety of mobile communication scenarios, including but not limited to transmission between base stations and terminal devices, point-to-point transmission between terminal devices, multi-hop/relay transmission between base stations and terminal devices, dual connectivity (DC) or multi-connection scenarios between multiple base stations and terminal devices, and other scenarios.
  • mobile communication scenarios including but not limited to transmission between base stations and terminal devices, point-to-point transmission between terminal devices, multi-hop/relay transmission between base stations and terminal devices, dual connectivity (DC) or multi-connection scenarios between multiple base stations and terminal devices, and other scenarios.
  • the terminal devices involved in the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem with wireless communication functions.
  • the terminal may be a subscriber unit, user equipment (UE), cellular phone, smart phone, wireless data card, personal digital assistant (PDA) computer, tablet computer, wireless modem (modulator demodulator, modem), laptop computer, machine type communication (MTC) terminal and wireless terminal in self-driving, etc.
  • user equipment includes vehicle user equipment.
  • IOT Internet of Things
  • IoT Internet of Things
  • wireless communication functions By configuring wireless communication units, so that they can access wireless communication networks and accept remote control.
  • Such devices have wireless communication functions because they are configured with wireless communication units, so they also belong to the category of wireless communication devices.
  • terminal devices can also be called mobile stations (MS), mobile devices, mobile terminals, wireless terminals, handheld devices (handsets), clients, etc.
  • the network device may be an evolved Node B (eNB), a radio network controller (RNC), a Node B (NB), a base station controller (BSC), a base transceiver station (BTS), a home evolved Node B (or home Node B, HNB), a baseband unit (BBU), a device that performs base station functions in device to device (D2D), an access point in a wireless fidelity (WIFI) system, or an access point in a wireless fidelity (WIFI) system.
  • the network device may be a base station (e.g., a wireless access point, AP), a wireless relay node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc.
  • It may also be a gNB or a transmission point (e.g., TRP or TP) in NR, one or a group (including multiple) of antenna panels of a base station in NR, or a network node constituting a gNB or a transmission point, such as a building baseband unit (BBU) or a distributed unit (DU), etc., or the network device may also be an on-board device, a wearable device, a network device in a 6G network, or a network device in a PLMN network to be evolved in the future, or a network device deployed on a satellite, without limitation.
  • a transmission point e.g., TRP or TP
  • a group including multiple
  • BBU building baseband unit
  • DU distributed unit
  • the network device may also be an on-board device, a wearable device, a network device in a 6G network, or a network device in a PLMN network to be evolved in the future, or a network device deployed on a satellite
  • the base station can be divided into a macro base station for providing a macro cell, a micro base station for providing a pico cell, and a femto base station for providing a femto cell.
  • a macro base station for providing a macro cell
  • a micro base station for providing a pico cell
  • a femto base station for providing a femto cell.
  • the BBU can be integrated with the radio frequency unit (RFU) in the same device, which is connected to the antenna array through a cable (such as but not limited to a feeder).
  • the BBU can also be set separately from the RFU, and the two are connected by optical fiber, and communicate through, for example, but not limited to, the common public radio interface (CPRI) protocol.
  • the RFU is usually called a remote radio unit (RRU), which is connected to the antenna array through a cable.
  • the RRU can also be integrated with the antenna array.
  • the active antenna unit (AAU) product currently on the market adopts this structure.
  • the BBU can be further decomposed into multiple parts.
  • the BBU can be further subdivided into a centralized unit (CU) and a distributed unit (DU) according to the real-time nature of the services being processed.
  • the CU is responsible for processing non-real-time protocols and services
  • the DU is responsible for processing physical layer protocols and real-time services.
  • some physical layer functions can be separated from the BBU or DU and integrated into the AAU.
  • Wireless communication between communication devices may include: wireless communication between network devices and terminal devices, wireless communication between network devices and network devices, and wireless communication between terminal devices and terminal devices.
  • wireless communication can also be referred to as “communication”
  • communication can also be described as "data transmission”, “information transmission” or “transmission”.
  • Fig. 1 is a schematic diagram of a network architecture applicable to an embodiment of the present application.
  • the network architecture includes a network device and a terminal device, and the network device may be a base station.
  • the network device may send a downlink signal or downlink information to the terminal device, and the terminal device may send an uplink signal or uplink information to the network device.
  • 5G NR Compared with the low-frequency band transmission in LTE, 5G NR adds a high-frequency band for signal transmission in order to meet the needs of three major scenarios. It is generally believed that the high-frequency band is the band above 6GHz, such as 26GHz, 28GHz, 39GHz or 60GHz. Using high-frequency bands for signal transmission can increase the bandwidth and improve the transmission rate; however, due to the high frequency of the high-frequency band, the signal will experience severe attenuation during the spatial propagation process, resulting in a serious limitation of the signal coverage. Therefore, 5G NR uses beamforming technology to increase the transmission power of the signal in the transmission direction, improve the received signal-to-interference-to-noise ratio, and thus improve the performance of the communication system. In the process of 5G NR research, considering the cost and performance trade-off, the hybrid beamforming (HBF) technology including digital beamforming and analog beamforming was finally adopted.
  • HBF hybrid beamforming
  • the antenna panel is the core component.
  • the beam is sent or received through the antenna panel.
  • base stations and terminal devices are deployed with multiple antenna panels.
  • the deployment of antenna panels has a more important impact on communication performance.
  • FIG. 2 is a schematic diagram of two typical antenna panels.
  • mobile terminals integrate 2 or 3 antenna panels
  • fixed terminals such as customer premises equipment (CPE)/fixed wireless access (FWA) may integrate more antenna panels, such as 4 or 8 antenna panels.
  • CPE customer premises equipment
  • FWA fixed wireless access
  • the antenna panel in the embodiment of the present application can be a group of antenna sets.
  • the antenna panel in the embodiment of the present application can also be replaced by an "antenna set”.
  • a group of antenna sets may be a group of antennas that can independently or individually control the transmission power.
  • a group of antenna sets may also be a group of antennas that can independently or individually perform timing.
  • a group of antenna sets may also be a group of antennas that can independently or individually perform modulation coding.
  • the antenna panel in the embodiment of the present application may be a capability value set in the capability value set list of the terminal device. Therefore, the antenna panel in the embodiment of the present application may also be replaced by a "capability value set".
  • the capability value set may include the number of channel sounding reference signal (SRS) ports, the maximum number of SRS ports, the number of layers sent by uplink (UL), the maximum number of layers sent by UL, the coherence type of the antenna port, etc.
  • the capability value set corresponds to a synchronization signal and physical broadcast channel block (SSB) resource indicator (SSBRI), or the capability value set corresponds to a channel-state information reference signal (CSI-RS) resource indicator (CRI-RS resource indicator, CRI).
  • SSB synchronization signal and physical broadcast channel block
  • CSI-RS channel-state information reference signal
  • CRI CRI resource indicator
  • an antenna panel may also refer to an SSBRI or CRI.
  • the antenna panel in the embodiment of the present application may also be replaced by "SSBRI” or "CRI".
  • the correspondence between the capability value set and the SSBRI, or the correspondence between the capability value set and the CRI can be determined by the terminal device.
  • the terminal device can report the correspondence between the capability value set and the SSBRI, or the correspondence between the capability value set and the CRI to the network device in the beam reporting.
  • the terminal device can report the capability value set or the SSBRI or the CRI to the network device.
  • the antenna panel in the embodiment of the present application may be an SRS set. Therefore, the antenna panel in the present application may also be referred to as an "SRS set”.
  • the definition of an antenna panel may be dynamically changed, for example, at time 1, an antenna panel includes a capability set of 4 SRS ports. At time 2 after time 1, the antenna panel may include a capability set of 2 SRS ports.
  • the precoding matrix that can be used when transmitting 1 stream data is shown in Table 1
  • the precoding matrix that can be used when transmitting 2 stream data is shown in Table 2.
  • the base station instructs the terminal device to use the precoding matrix and the number of layers (rank) of the data stream transmitted on the PUSCH through the precoding information and number of layers (precoding information and number of layers) fields in the downlink control information (DCI).
  • the antenna port (antenna port) field in the DCI indicates the DMRS port (DMRS port) used to send the demodulation reference signal (DMRS).
  • the precoding matrix that can be used when 2 antenna ports send 1 stream data and the precoding matrix that can be used when 2 antenna ports send 2 stream data are put together for indication, for a total of 9 cases, and the precoding information and the stream number field require 4 bits (bits), as shown in Table 3.
  • the terminal device When the terminal device receives the DCI sent by the base station, first, the terminal device determines the precoding matrix and the number of streams used to transmit the data stream on the PUSCH according to the precoding information in the DCI and the index value indicated by the stream number field. Secondly, the terminal device determines the DMRS table (DMRS table) used to search for the DMRS port according to the precoding information and the number of streams of the transmission data stream indicated by the stream number field; wherein, the DMRS table is different for different data streams. Finally, the terminal device determines the DMRS port used to transmit the data stream according to the determined DMRS table and the value indicated by the antenna port field in the DCI.
  • DMRS table DMRS table
  • the DMRS table corresponding to 1-stream data is shown in Table 5
  • the DMRS table corresponding to 2-stream data is shown in Table 6.
  • the DMRS port is associated with the DMRS code division multiplexing group (code division multiplexing group, CDM group)
  • the DMRS CDM group includes DMRS CDM group 1 and DMRS CDM group 2.
  • the terminal device uses DMRS port 0 to send 1 stream of data.
  • the number of data streams transmitted by the terminal device on PUSCH is 2, and the value indicated by the antenna port field is 1, then the terminal device uses DMRS port 0 and DMRS port 1 to send 2 streams of data.
  • NCB non-codebook
  • the base station For codebook-based PUSCH transmission, the base station indicates the precoding information and the number of streams field; for non-codebook-based PUSCH transmission, the base station does not indicate the precoding information and the number of streams field;
  • the base station In codebook-based PUSCH transmission, the base station indicates the number of data streams transmitted on the PUSCH through the precoding information and the stream number field in the DCI. In non-codebook-based PUSCH transmission, the base station indicates the number of data streams transmitted on the PUSCH through the sounding reference signal (SRS) resource indication (SRI) field in the DCI.
  • SRS sounding reference signal
  • SRI resource indication
  • the SRI field in the DCI may include 2 bits, 3 bits, or 4 bits.
  • the number of data streams indicated by the SRI field with different bits is shown in Table 7, where N SRS indicates the number of bits included in the SRI field.
  • N SRS indicates the number of bits included in the SRI field.
  • the base station instructs the terminal device to transmit 1-stream data on PUSCH, and the precoding matrix used for sending PUSCH is the same as the precoding matrix used by the terminal device to send SRS in SRS resource 2;
  • the base station instructs the terminal device to transmit 2-stream data on PUSCH, and the precoding matrix used for sending PUSCH is the same as the precoding matrix used by the terminal device to send SRS in SRS resource 0 and SRS resource 2;
  • the base station instructs the base station instructs the base station to transmit 2-stream data on PUSCH, and the precoding matrix used for sending PUSCH is the same as the precoding matrix used by the terminal device to send SRS in SRS resource 0 and SRS resource 2;
  • the terminal device When the terminal device receives the DCI sent by the base station, first, the terminal device determines the number of data streams transmitted on the PUSCH and the precoding matrix used to transmit the data stream on the PUSCH according to the index value indicated by the SRI field in the DCI. Secondly, the terminal device determines the DMRS table used to find the DMRS port according to the number of data streams transmitted indicated by the SRI field. Finally, the terminal device determines the DMRS port used to transmit the data stream according to the determined DMRS table and the value indicated by the antenna port field in the DCI. This step is the same as the above-mentioned codebook-based PUSCH transmission step.
  • DMRS is used for the demodulation of physical downlink shared channel (PDSCH) and physical uplink shared channel (PUSCH).
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • CDM group the DMRS CDM group can be referred to as CDM group.
  • the first DMRS type (DMRS-type 1) has 2 CDM groups, and the second DMRS type (DMRS-type 2) has 3 CDM groups.
  • Each CDM group can be connected to up to 4 DMRS ports.
  • DMRS signals sent by DMRS ports in the same CDM group have a quasi-co-location (QCL) relationship.
  • QCL quasi-co-location
  • the large-scale properties of the channel experienced by the symbols of one antenna port can be inferred from the large-scale properties of the symbols on the other port.
  • two different signals are transmitted from two antenna ports that are very close to each other. Due to fading, the channel states experienced by the two different signals may be different, but the large-scale parameters of the two channels may be the same. In this case, although the two signals correspond to different antenna ports, the two signals are quasi-co-located. It can also be understood that if some large-scale parameters of the two antenna ports are consistent, regardless of whether their actual physical locations are different, the terminal device can assume that the signals sent by the two antenna ports are from the same location. Among them, the large-scale parameters include parameters such as beam direction.
  • TCI state Transmission configuration indicator state
  • TCI state can be used to configure the quasi-co-location relationship between the downlink reference signal and the DMRS corresponding to the PDSCH.
  • TCI state includes one or two QCL relationships.
  • QCL represents a certain consistency relationship between the signal to be received or sent and a previously known reference signal. If a reference signal has a QCL relationship with the signal to be received, the terminal device can use the receiving parameters when the reference signal was previously received to receive the signal to be received; if a reference signal has a QCL relationship with the signal to be sent, the terminal device can use the sending parameters when the reference signal was previously sent to send the signal to be sent.
  • TCI state can indicate the quasi-co-location relationship between reference signal A and reference signal B.
  • each TCI state can be configured with two source reference signals and the QCL relationship corresponding to the two source reference signals.
  • qcl-Type1 represents source reference signal (Source RS) 1 and the corresponding QCL type X
  • qcl-Type2 represents source reference signal 2 and the corresponding QCL type Y.
  • QCL type X is different from QCL type Y.
  • a unified source reference signal can be configured for different reference signals or channels.
  • a Unified TCI state can be configured for the terminal device.
  • the Unified TCI state is used to indicate the large-scale channel information corresponding to the PDCCH and also to indicate the large-scale channel information of the PDSCH.
  • the structure of a Unified TCI state can be understood as follows:
  • QCL-Info can be understood by referring to the description in the traditional TCI state structure, and will not be described in detail in the embodiments of the present application.
  • R16 supports 2 TRPs to transmit PDSCH to one terminal device, and the combination of the number of data streams transmitted by the 2 TRPs on PDSCH can be 1+1, 1+2, or 2+2.
  • the combination of the number of data streams transmitted by the 2 TRPs can be 1+2, which can be understood as, the number of data streams transmitted by the first TRP of the 2 TRPs on PDSCH is 1, and the number of data streams transmitted by the second TRP of the 2 TRPs on PDSCH is 2.
  • the protocol stipulates that the base station notifies the terminal device through DCI.
  • the end device has a DMRS port set, which can be divided into 2 CDM groups.
  • the base station sends two TCI states to the terminal device.
  • the first TCI state is bound to the first CDM group (CDM group 0)
  • the second TCI state is bound to the second CDM group (CDM group 1).
  • the first CDM group is bound to the first TRP
  • the second CDM group is bound to the second TRP.
  • the DMRS port set indicated by the base station is ⁇ 0, 2 ⁇ .
  • the DMRS port set ⁇ 0, 2 ⁇ belongs to two CDM groups, among which DMRS port ⁇ 0 ⁇ belongs to CDM group 0 and DMRS port ⁇ 2 ⁇ belongs to CDM group 1.
  • the DMRS port set indicated by the base station is ⁇ 0, 1, 2 ⁇ .
  • the DMRS port set ⁇ 0, 1, 2 ⁇ belongs to two CDM groups, among which DMRS port ⁇ 0, 1 ⁇ belongs to CDM group 0 and DMRS port ⁇ 2 ⁇ belongs to CDM group 1.
  • the DMRS port set indicated by the base station is ⁇ 0, 1, 2, 3 ⁇
  • the DMRS port set ⁇ 0, 1, 2, 3 ⁇ belongs to two CDM groups, among which DMRS port ⁇ 0, 1 ⁇ belongs to CDM group 0, and DMRS port ⁇ 2, 3 ⁇ belongs to CDM group 1.
  • DMRS port ⁇ 0 ⁇ and DMRS port ⁇ 1 ⁇ are bound to CDM group 0, and DMRS port ⁇ 2 ⁇ and DMRS port ⁇ 3 ⁇ are bound to CDM group 1.
  • a DMRS port set ⁇ 0, 2, 3 ⁇ is added to the DMRS table for downlink transmission, where ⁇ 0 ⁇ belongs to CDM group 0 and ⁇ 2, 3 ⁇ belongs to CDM group 1. This can support the 1+2 data stream combination for two TRPs on PDSCH.
  • R18 proposes that the terminal equipment uses two antenna panels to transmit data streams to the base station on PUSCH.
  • the number of stream combinations of using two antenna panels to transmit data streams to the base station supports 1+1, 2+1 and 2+2; however, how to support the use of two antenna panels to transmit data streams to the base station with a number of streams of 1+2 needs to be solved urgently.
  • the current protocol cannot support dynamic switching between multi-antenna panel and single antenna panel transmission.
  • the number of streams of using two antenna panels to transmit data streams to the base station is 2+1, which can be understood as the number of streams of using the first antenna panel to transmit data streams to the base station is 2, and the number of streams of using the second antenna panel to transmit data streams to the base station is 1.
  • an embodiment of the present application proposes a method for sending data, which can enable a terminal device to use two antenna panels to transmit data streams to a base station with a combination of 1+2 streams, thereby improving the reliability of data transmission.
  • FIG3 is a schematic flow diagram of a method 300 for sending data provided in an embodiment of the present application.
  • the network device in the embodiment of the present application may be a base station.
  • the "field" and “domain” in the embodiment of the present application may have the same meaning and are both used to indicate a type of information.
  • the precoding information and stream number fields in the embodiment of the present application may also be a transmission precoding matrix indicator (TPMI) field.
  • TPMI transmission precoding matrix indicator
  • the network device sends first information to the terminal device.
  • the first information includes a first field and a second field.
  • the first field is used to indicate a first number of data streams sent by the terminal device according to a first precoding matrix and a second number of data streams sent according to a second precoding matrix.
  • the second field is used by the terminal device to determine a first DMRS port set and a second DMRS port set used when sending data streams.
  • the first number and the second number are positive integers.
  • the first information may be a first DCI.
  • the terminal device includes two antenna panels.
  • the first field is used to indicate the first number of data streams sent by the terminal device and the first precoding matrix used when sending the first number of data streams
  • the first field is used to indicate the second number of data streams sent by the terminal device and the second precoding matrix used when sending the second number of data streams.
  • the first field includes a precoding information and stream number field.
  • the precoding information and stream number field includes a first precoding information and stream number field and a second precoding information and stream number field, the first precoding information and stream number field indicating a first number of data streams sent by the terminal device according to the first precoding matrix, and the second precoding information and stream number field indicating a second number of data streams sent by the terminal device according to the second precoding matrix.
  • the first field includes an SRI field.
  • the SRI field includes a first SRI field and a second SRI field, the first SRI field indicates a first number of data streams sent by the terminal device according to the first precoding matrix, and the second SRI field indicates a second number of data streams sent by the terminal device according to the second precoding matrix.
  • the second field includes an antenna port field.
  • the first precoding information and the stream number field in the first field are used to indicate the first number of data streams sent by the first antenna panel of the two antenna panels according to the first precoding matrix
  • the second precoding information and the stream number field in the first field are used to indicate the second number of data streams sent by the second antenna panel of the two antenna panels according to the second precoding matrix.
  • the first antenna panel The first antenna panel is associated with first precoding information and a stream number field
  • the second antenna panel is associated with second precoding information and a stream number field.
  • the first precoding information and the stream number field in the first field are used to indicate the first number of data streams sent by the terminal device according to the first TCI state
  • the second precoding information and the stream number field in the first field are used to indicate the second number of data streams sent by the terminal device according to the second TCI state.
  • the first TCI state can indicate the first beam direction
  • the second TCI state can indicate the second beam direction. It can be understood that the first TCI state is associated with the first precoding information and the stream number field; the second TCI state is associated with the second precoding information and the stream number field. It can be understood that the first TCI state is associated with the first antenna panel; the second TCI state is associated with the second antenna panel.
  • first TCI state is associated with the first antenna panel, and/or the first TCI state is associated with the first precoding information and the stream number field;
  • second TCI state is associated with the second antenna panel, and/or the second TCI state is associated with the second precoding information and the stream number field.
  • the first SRI field in the first field is used to indicate the first number of data streams sent by the first antenna panel of the two antenna panels
  • the second SRI field in the first field is used to indicate the second number of data streams sent by the second antenna panel of the two antenna panels. It can be understood that the first antenna panel is associated with the first SRI field, and the second antenna panel is associated with the second SRI field.
  • the first SRI field in the first field is used to indicate the first number of data streams sent by the terminal device according to the first TCI state
  • the second SRI field in the first field is used to indicate the second number of data streams sent by the terminal device according to the second TCI state.
  • the first TCI state can indicate the first beam direction
  • the second TCI state can indicate the second beam direction. It can be understood that the first TCI state is associated with the first SRI field; the second TCI state is associated with the second SRI field. It can be understood that the first TCI state is associated with the first antenna panel; the second TCI state is associated with the second antenna panel.
  • first TCI state is associated with the first antenna panel, and/or the first TCI state is associated with the first SRI field; the second TCI state is associated with the second antenna panel, and/or the second TCI state is associated with the second SRI field.
  • the terminal device receives first information from the network device.
  • the terminal device determines a first DMRS port set and a second DMRS port set according to the first information. Specifically, the terminal device determines the first DMRS port set and the second DMRS port set according to the third number and the second field, and the total number of DMRS ports included in the first DMRS port set and the second DMRS port set is equal to the third number.
  • the third number is equal to the sum of the first number and the second number.
  • the terminal device determines the first number of data streams sent according to the first precoding matrix and the second number of data streams sent according to the second precoding matrix according to the first field in the first information; the terminal device determines that the total number of data streams is equal to the third number; the terminal device determines the DMRS table corresponding to the third number, and determines all DMRS ports used to send data streams according to the value indicated by the second field and the DMRS table corresponding to the third number.
  • the terminal device determines the first DMRS port set and the second DMRS port set according to all DMRS ports used to send data streams; wherein the union of the first DMRS port set and the second DMRS port set is all DMRS ports used to send data streams, and each DMRS port is bound to a DMRS port set.
  • all DMRS ports used to send data streams include DMRS port 0, DMRS port 1, and DMRS port 2, DMRS port 0, DMRS port 1 are bound to the first DMRS port set, and DMRS port 2 is bound to the second DMRS port set, then the first DMRS port set includes DMRS port 0 and DMRS port 1, and the second DMRS port set includes DMRS port 2.
  • the first DMRS port set in the embodiment of the present application can be called the first DMRS CDM group (DMRS CDM group 0), and the second DMRS port set can be called the second DMRS CDM group (DMRS CDM group 1).
  • all DMRS ports for sending data streams determined according to the first information in the embodiment of the present application can be divided into two CDM groups, wherein the first DMRS port set is associated with one of the two CDM groups, and the second DMRS port set is associated with the other of the two CDM groups.
  • the terminal device sends a first number of data streams to the network device according to the first DMRS port set, and sends a second number of data streams to the network device according to the second DMRS port set, the number of DMRS ports included in the first DMRS port set is equal to the first number, the number of DMRS ports included in the second DMRS port set is equal to the second number, and the first number is not equal to the second number.
  • the terminal device sends the first number of data streams to the network device according to the first DMRS CDM group, and sends the second number of data streams to the network device according to the second DMRS CDM group.
  • the terminal device sends a first number of data streams to the network device according to the first DMRS port set and sends a second number of data streams to the network device according to the second DMRS port set.
  • the terminal device A DMRS port set and a first precoding matrix send a first number of data streams to a network device, and a second number of data streams are sent to the network device according to a second DMRS port set and a second precoding matrix.
  • the terminal device when the first number is not equal to the second number, if the first number is equal to the number of DMRS ports included in the first DMRS port set, the terminal device sends a first number of data streams to the network device according to the first DMRS port set and sends a second number of data streams to the network device according to the second DMRS port set.
  • the terminal device when the first number is not equal to the second number, if the first number is equal to the number of DMRS ports included in the first DMRS port set, the terminal device sends a first number of data streams to the network device according to the first DMRS port set and the first precoding matrix, and sends a second number of data streams to the network device according to the second DMRS port set and the second precoding matrix.
  • the first antenna panel of the terminal device sends a first number of data streams to the network device according to the first DMRS port set and the first precoding matrix
  • the second antenna panel of the terminal device sends a second number of data streams to the network device according to the second DMRS port set and the second precoding matrix.
  • the first DMRS port set is associated with the first antenna panel, and/or the first DMRS port set is associated with the first precoding information and the stream number field, and/or the first DMRS port set is associated with the first SRI field, and/or the first DMRS port set is associated with the first TCI state.
  • the second DMRS port set is associated with the second antenna panel, and/or the second DMRS port set is associated with the second precoding information and the stream number field, and/or the second DMRS port set is associated with the second SRI field, and/or the second DMRS port set is associated with the second TCI state.
  • the network device receives a first number of data streams from the terminal device according to a first DMRS port set and receives a second number of data streams from the terminal device according to a second DMRS port set.
  • the number of DMRS ports included in the first DMRS port set is equal to the first number
  • the number of DMRS ports included in the second DMRS port set is equal to the second number
  • the first number is not equal to the second number.
  • the terminal device when the first quantity is not equal to the second quantity, if the first quantity is equal to the number of DMRS ports included in the second DMRS port set, and the second quantity is equal to the number of DMRS ports included in the first DMRS port set, the terminal device sends a first quantity of data streams to the network device according to the second DMRS port set, and sends a second quantity of data streams to the network device according to the first DMRS port set.
  • the first antenna panel of the terminal device when the first number is not equal to the second number, if the first number is equal to the number of DMRS ports included in the second DMRS port set, the first antenna panel of the terminal device sends the first number of data streams to the network device according to the second DMRS port set and the first precoding matrix, and the second antenna panel of the terminal device sends the second number of data streams to the network device according to the first DMRS port set and the second precoding matrix.
  • the second DMRS port set is associated with the first antenna panel, and/or the second DMRS port set is associated with the first precoding information and the stream number field, and/or the second DMRS port set is associated with the first SRI field, and/or the second DMRS port set is associated with the first TCI state;
  • the first DMRS port set is associated with the second antenna panel, and/or the first DMRS port set is associated with the second precoding information and the stream number field, and/or the first DMRS port set is associated with the second SRI field, and/or the first DMRS port set is associated with the second TCI state.
  • the network device receives a first number of data streams from the terminal device according to the second DMRS port set and receives a second number of data streams from the terminal device according to the first DMRS port set, the number of DMRS ports included in the second DMRS port set is equal to the first number, and the number of DMRS ports included in the first DMRS port set is equal to the second number.
  • the first DMRS port set is associated with the first antenna panel can be understood as the first antenna panel sends a first number of data streams according to the first DMRS port set, and the number of DMRS ports included in the first DMRS port set is equal to the first number; however, when the number of DMRS ports included in the second DMRS port set is equal to the first number, “the second DMRS port set is associated with the first antenna panel”, and the first antenna panel sends the first number of data streams according to the second DMRS port set.
  • the number of DMRS ports included in the DMRS port set used by the terminal device to send a first number of data streams is equal to the first number
  • the number of DMRS ports included in the DMRS port set used by the terminal device to send a second number of data streams is equal to the second number
  • the first precoding information and the stream number field in the first information indicate that the first number is equal to 1
  • the second precoding information and the stream number field in the first information indicate that the second number is equal to 2.
  • the terminal device needs to use the first antenna panel to transmit 1 data stream to the network device and use the second antenna panel to transmit 2 data streams to the network device; it can be understood that the terminal device uses 2 antenna panels to transmit data streams with a combined number of 1+2.
  • All DMRS ports indicated by the antenna port field in the first information include DMRS port 0, DMRS port 1, and DMRS port 2; if DMRS port 0, DMRS port 1 are bound to the first DMRS port set, and DMRS port 2 is bound to the second DMRS port set, then the first DMRS port set includes DMRS port 0 and DMRS Port 1, the second DMRS port set includes DMRS port 2.
  • the first antenna panel of the terminal device Since the number of data streams that the first antenna panel needs to transmit is equal to the number of DMRS ports included in the second DMRS port set, and the number of data streams that the second antenna panel needs to transmit is equal to the number of DMRS ports included in the first DMRS port set, the first antenna panel of the terminal device sends 1 data stream to the network device according to the second DMRS port set, and sends 2 data streams to the network device according to the first DMRS port set.
  • the first precoding information and the stream number field in the first information indicate that the first number is equal to 2
  • the second precoding information and the stream number field in the first information indicate that the second number is equal to 1.
  • the terminal device needs to use the first antenna panel to transmit 2 data streams to the network device and use the second antenna panel to transmit 1 data stream to the network device; it can be understood that the number of streams of the data streams transmitted by the terminal device to the network device using 2 antenna panels is 2+1.
  • All DMRS ports indicated by the antenna port field in the first information include DMRS port 0, DMRS port 1 and DMRS port 2; if DMRS port 0, DMRS port 1 and the first DMRS port set are bound, and DMRS port 2 and the second DMRS port set are bound, then the first DMRS port set includes DMRS port 0 and DMRS port 1, and the second DMRS port set includes DMRS port 2.
  • the first antenna panel of the terminal device Since the number of data streams that the first antenna panel needs to transmit is equal to the number of DMRS ports included in the first DMRS port set, and the number of data streams that the second antenna panel needs to transmit is equal to the number of DMRS ports included in the second DMRS port set, the first antenna panel of the terminal device sends 2 data streams to the network device according to the first DMRS port set, and sends 1 data stream to the network device according to the second DMRS port set.
  • the terminal device can determine the first number of data streams sent according to the first precoding matrix (first antenna panel) and the second number of data streams sent according to the second precoding matrix (second antenna panel) according to the first information sent by the network device.
  • the terminal device can send the first number of data streams to the network device according to a DMRS port set including a number of DMRS ports equal to the first number, and send the second number of data streams to the network device according to a DMRS port set including a number of DMRS ports equal to the second number.
  • the embodiment of the present application can not only support the terminal device using 2 antenna panels to transmit data streams with a combination of 2+1, but also support the terminal device using 2 antenna panels to transmit data streams with a combination of 1+2, thereby improving data transmission reliability.
  • the DMRS port set ⁇ 0, 2, 3 ⁇ is added to the DMRS table.
  • a DMRS port set ⁇ 0, 2, 3 ⁇ may also be added to the DMRS table.
  • a combination of 1+2 streams of data streams transmitted by the two antenna panels to the network device may be supported.
  • the embodiment of the present application does not limit this.
  • each antenna panel is bound to a DMRS port set. If the first DMRS port set is bound to the first antenna panel, and the second DMRS port set is bound to the second antenna panel, the first antenna panel of the terminal device sends a first number of data streams to the network device according to the first DMRS port set, and the second antenna panel of the terminal device sends a second number of data streams to the network device according to the second DMRS port set.
  • the first antenna panel is associated with the first precoding information and the stream number field
  • the second antenna panel is associated with the second precoding information and the stream number field.
  • the first TCI state is associated with the first precoding information and the stream number field
  • the second TCI state is associated with the second precoding information and the stream number field. It can be understood that the first TCI state is associated with the first antenna panel; the second TCI state is associated with the second antenna panel. It can be understood that the first TCI state is associated with the first antenna panel, and/or the first TCI state is associated with the first precoding information and the stream number field; the second TCI state is associated with the second antenna panel, and/or the second TCI state is associated with the second precoding information and the stream number field.
  • the first precoding information and the stream number field in the first information indicate that the first number is equal to 1
  • the second precoding information and the stream number field indicate that the second number is equal to 1, that is, the number of streams of the data streams transmitted by the terminal device to the network device using two antenna panels is 1+1
  • all DMRS ports indicated by the second field in the first information include DMRS port 0 and DMRS port 2. If DMRS port 0 is bound to the first DMRS port set, and DMRS port 2 is bound to the second DMRS port set, then the first DMRS port set includes DMRS port 0, and the second DMRS port set includes DMRS port 2. Therefore, the first antenna panel of the terminal device sends 1 stream of data to the network device according to the first DMRS port set, and sends 1 stream of data to the network device according to the second DMRS port set.
  • the first DMRS port set is bound to the first antenna panel in the embodiment of the present application can be understood as the first antenna panel can only send the first number of data streams according to the first DMRS port set.
  • the second DMRS port set is bound to the second antenna panel can be understood as the second antenna panel can only send the second number of data streams according to the second DMRS port set.
  • the network device sends second information to the terminal device, the second information includes a third field and a fourth field, the third field is used to indicate a third number of data streams sent by the terminal device according to the third precoding matrix and a fourth number of data streams sent according to the fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer.
  • the second information may be a second DCI. It can be understood that the first information is used to indicate that the terminal device uses two antenna panels to simultaneously transmit data streams to the network device, and the first information is used to indicate dual-antenna panel transmission; the second information is used to indicate that the terminal device uses one antenna panel to transmit data streams to the network device, and the second information is used to indicate single-antenna panel transmission.
  • the third field is used to indicate the third number of data streams sent by the terminal device and the third precoding matrix used when sending the third number of data streams
  • the fourth field is used to indicate the fourth number of data streams sent by the terminal device and the fourth precoding matrix used when sending the fourth number of data streams.
  • the fourth field includes the antenna port field.
  • the third field includes a precoding information and stream number field.
  • the precoding information and stream number field includes a third precoding information and stream number field and a fourth precoding information and stream number field
  • the third precoding information and stream number field indicates a third number of data streams sent by the terminal device according to a third precoding matrix
  • the fourth precoding information and stream number field indicates a fourth number of data streams sent by the terminal device according to a fourth precoding matrix.
  • the third field includes an SRI field.
  • the SRI field includes a third SRI field and a fourth SRI field
  • the third SRI field indicates a third number of data streams sent by the terminal device according to the third precoding matrix
  • the fourth SRI field indicates a fourth number of data streams sent by the terminal device according to the fourth precoding matrix.
  • the third precoding information and the stream number field in the third field are used to indicate the third number of data streams sent by the first antenna panel of the two antenna panels according to the third precoding matrix
  • the fourth precoding information and the stream number field in the third field are used to indicate the fourth number of data streams sent by the second antenna panel of the two antenna panels according to the fourth precoding matrix.
  • the first antenna panel is associated with the third precoding information and the stream number field
  • the second antenna panel is associated with the fourth precoding information and the stream number field.
  • the third SRI field in the third field is used to indicate the third number of data streams sent by the first antenna panel of the two antenna panels according to the third precoding matrix
  • the fourth SRI field in the third field is used to indicate the fourth number of data streams sent by the second antenna panel of the two antenna panels according to the fourth precoding matrix. It can be understood that the first antenna panel is associated with the third SRI field, and the second antenna panel is associated with the fourth SRI field.
  • the terminal device receives the second information from the network device. Since the third quantity indicated in the second information is equal to zero, the terminal device determines a third DMRS port set according to the fourth quantity and the fourth field, and the number of DMRS ports included in the third DMRS port set is equal to the fourth quantity. Specifically, the terminal device determines the DMRS table corresponding to the fourth quantity, and determines the third DMRS port set for sending the fourth quantity of data streams according to the value indicated by the fourth field and the DMRS table corresponding to the fourth quantity.
  • the terminal device sends a fourth number of data streams to the network device according to the third DMRS port set. It can be understood that the terminal device sends a fourth number of data streams to the network device according to the third DMRS port set and the fourth precoding matrix. It can also be understood that the second antenna panel of the terminal device sends a fourth number of data streams to the network device according to the third DMRS port set and the fourth precoding matrix, and the first antenna panel of the terminal device does not send a data stream to the network device. Correspondingly, the network device receives the fourth number of data streams from the terminal device according to the third DMRS port set.
  • the number of data streams sent by the antenna panel can be indicated by the precoding information and stream number field.
  • the R18 protocol can add an indication status to the precoding information and stream number table indicated by the existing precoding information and stream number field to indicate that the antenna panel does not send a data stream.
  • the precoding matrix that can be used by an antenna panel to send 1 stream data and the precoding matrix that can be used by an antenna panel to send 2 stream data are indicated together, as shown in Table 8.
  • Non-related precoding matrices can be indicated together, as shown in Table 9.
  • the first antenna panel does not send a data stream, and the second antenna panel sends 2 data streams according to the fourth precoding matrix.
  • the second information can jointly indicate the third precoding information and stream number field (precoding information and stream number 1) and the fourth precoding information and stream number field (precoding information and stream number 2).
  • the precoding information and stream number table of the third field is as shown in Table 10.
  • each precoding information and stream number field indicates 9 situations respectively, and each precoding information and stream number field requires 4 bits. If the third precoding information and stream number field and the fourth precoding information and stream number field are jointly indicated, only 7 bits are required. Therefore, jointly indicating the third precoding information and stream number field and the fourth precoding information and stream number field can save communication overhead.
  • the R18 protocol may not add an indication state to the precoding information and stream number table indicated by the third precoding information and stream number field, and may add two indication states to the precoding information and stream number table indicated by the fourth precoding information and stream number field to indicate the stream numbers of the data streams sent by the first antenna panel and the second antenna panel.
  • the first indication state of the two newly added indication states may be used to indicate that the stream number indicated by the third precoding information and stream number field is the stream number of the data stream sent by the first antenna panel, and the second antenna panel does not send a data stream; the second indication state of the two newly added indication states may be used to indicate that the stream number indicated by the third precoding information and stream number field is the stream number of the data stream sent by the second antenna panel, and the first antenna panel does not send a data stream.
  • the precoding information and stream number table indicated by the third precoding information and stream number field are shown in Table 3, and the precoding information and stream number table indicated by the fourth precoding information and stream number field are shown in Table 11.
  • the number of data streams sent by the antenna panel can be indicated by the SRI field.
  • the R18 protocol can add an indication status to the SRI table indicated by the existing SRI field to indicate that the antenna panel does not send data streams.
  • the number of data streams indicated by the SRI field of different bits is shown in Table 12.
  • N SRS 2
  • the index value indicated by the third SRI field is 3
  • the index value indicated by the fourth SRI field is 1, then the first antenna panel does not send a data stream, and the second antenna panel sends 1 data stream.
  • N SRS 3
  • the index value indicated by the third SRI field is 7, and the index value indicated by the fourth SRI field is 6, then the first antenna panel does not send a data stream, and the second antenna panel sends a 3-stream data stream.
  • the terminal device determines the DMRS table corresponding to the third quantity, and determines the fourth DMRS port set for sending the third quantity of data streams based on the value indicated by the fourth field and the DMRS table corresponding to the third quantity.
  • the terminal device sends the third quantity of data streams to the network device according to the fourth DMRS port set. It can be understood that the terminal device sends the third quantity of data streams to the network device according to the fourth DMRS port set and the third precoding matrix. It can also be understood that the first antenna panel of the terminal device sends a third number of data streams to the network device according to the fourth DMRS port set and the third precoding matrix, and the second antenna panel of the terminal device does not send data streams to the network device.
  • the terminal device can determine to use a single antenna panel to send a data stream to the network device according to the second information sent by the network device, thereby enabling dynamic switching between multi-antenna panel transmission and single antenna panel transmission.
  • the embodiment of the present application proposes a method for data transmission, which can realize dynamic switching between multi-antenna panel transmission and single-antenna panel transmission, and can improve the reliability of data transmission.
  • Fig. 4 is a schematic flow diagram of a method 400 for sending data provided in an embodiment of the present application.
  • the network device in the embodiment of the present application may be a base station.
  • the "field" and “domain” in the embodiment of the present application may have the same meaning and are both used to indicate a type of information.
  • the network device sends second information to the terminal device, the second information includes a third field and a fourth field, the third field is used to indicate a third number of data streams sent by the terminal device according to the third precoding matrix and a fourth number of data streams sent according to the fourth precoding matrix, wherein the third number is equal to zero and the fourth number is a positive integer.
  • the second information may be a second DCI. It can be understood that the second information is used to indicate that the terminal device uses one antenna panel to transmit a data stream to the network device, and the second information is used to indicate single antenna panel transmission.
  • the third field is used to indicate the third number of data streams sent by the terminal device and the third precoding matrix used when sending the third number of data streams
  • the fourth field is used to indicate the fourth number of data streams sent by the terminal device and the fourth precoding matrix used when sending the fourth number of data streams.
  • the fourth field includes the antenna port field.
  • the third field includes a precoding information and stream number field.
  • the precoding information and stream number field includes a third precoding information and stream number field and a fourth precoding information and stream number field
  • the third precoding information and stream number field indicates a third number of data streams sent by the terminal device according to a third precoding matrix
  • the fourth precoding information and stream number field indicates a fourth number of data streams sent by the terminal device according to a fourth precoding matrix.
  • the third field includes an SRI field.
  • the SRI field includes a third SRI field and a fourth SRI field
  • the third SRI field indicates a third number of data streams sent by the terminal device according to the third precoding matrix
  • the fourth SRI field indicates a fourth number of data streams sent by the terminal device according to the fourth precoding matrix.
  • the third precoding information and the stream number field in the third field are used to indicate the third number of data streams sent by the first antenna panel of the two antenna panels according to the third precoding matrix
  • the fourth precoding information and the stream number field in the third field are used to indicate the fourth number of data streams sent by the second antenna panel of the two antenna panels according to the fourth precoding matrix.
  • the first antenna panel is associated with the third precoding information and the stream number field
  • the second antenna panel is associated with the fourth precoding information and the stream number field.
  • the third SRI field in the third field is used to indicate the third number of data streams sent by the first antenna panel of the two antenna panels according to the third precoding matrix
  • the fourth SRI field in the third field is used to indicate the fourth number of data streams sent by the second antenna panel of the two antenna panels according to the fourth precoding matrix. It can be understood that the first antenna panel is associated with the third SRI field, and the second antenna panel is associated with the fourth SRI field.
  • the terminal device receives second information from the network device.
  • the terminal device determines a third DMRS port set according to the second information. Specifically, since the third quantity indicated in the second information is equal to zero, the terminal device determines a third DMRS port set according to the fourth quantity and the fourth field, and the number of DMRS ports included in the third DMRS port set is equal to the fourth quantity. Specifically, the terminal device determines a DMRS table corresponding to the fourth quantity, and determines a third DMRS port set for sending the fourth quantity of data streams according to the value indicated by the fourth field and the DMRS table corresponding to the fourth quantity.
  • the terminal device sends a fourth number of data streams to the network device according to the third DMRS port set. It can be understood that the terminal device sends a fourth number of data streams to the network device according to the third DMRS port set and the fourth precoding matrix. It can also be understood that the second antenna panel of the terminal device sends the fourth number of data streams to the network device according to the third DMRS port set and the fourth precoding matrix, and the first antenna panel of the terminal device does not send data streams to the network device.
  • the network device receives a fourth number of data streams from the terminal device according to the third DMRS port set.
  • the number of data streams sent by the antenna panel can be indicated by the precoding information and stream number field.
  • the R18 protocol can add an indication status to the precoding information and stream number table indicated by the existing precoding information and stream number field to indicate that the antenna panel does not send a data stream.
  • the precoding matrix that can be used by an antenna panel to send 1 stream data and the precoding matrix that can be used by an antenna panel to send 2 stream data are indicated together, as shown in Table 8.
  • Non-related precoding matrices can be indicated together, as shown in Table 9.
  • the first antenna panel does not send a data stream, and the second antenna panel sends 2 data streams according to the fourth precoding matrix.
  • the second information can jointly indicate the third precoding information and stream number field (precoding information and stream number 1) and the fourth precoding information and stream number field (precoding information and stream number 2).
  • the precoding information and stream number table of the third field is as shown in Table 10.
  • each precoding information and stream number field indicates 9 situations respectively, and each precoding information and stream number field requires 4 bits. If the third precoding information and stream number field and the fourth precoding information and stream number field are jointly indicated, only 7 bits are required. Therefore, jointly indicating the third precoding information and stream number field and the fourth precoding information and stream number field can save communication overhead.
  • the R18 protocol may not add an indication state to the precoding information and stream number table indicated by the third precoding information and stream number field, and may add two indication states to the precoding information and stream number table indicated by the fourth precoding information and stream number field to indicate the stream numbers of the data streams sent by the first antenna panel and the second antenna panel.
  • the first indication state of the two newly added indication states may be used to indicate that the stream number indicated by the third precoding information and stream number field is the stream number of the data stream sent by the first antenna panel, and the second antenna panel does not send a data stream; the second indication state of the two newly added indication states may be used to indicate that the stream number indicated by the third precoding information and stream number field is the stream number of the data stream sent by the second antenna panel, and the first antenna panel does not send a data stream.
  • the precoding information and stream number table indicated by the third precoding information and stream number field are shown in Table 3, and the precoding information and stream number table indicated by the fourth precoding information and stream number field are shown in Table 11.
  • the number of data streams sent by the antenna panel can be indicated by the SRI field.
  • the R18 protocol can add an indication status to the SRI table indicated by the existing SRI field to indicate that the antenna panel does not send data streams.
  • the number of data streams indicated by the SRI field of different bits is shown in Table 10.
  • N SRS 2
  • the index value indicated by the third SRI field is 3
  • the index value indicated by the fourth SRI field is 1, then the first antenna panel does not send a data stream, and the second antenna panel sends 1 data stream.
  • N SRS 3
  • the index value indicated by the third SRI field is 7, and the index value indicated by the fourth SRI field is 6, then the first antenna panel does not send a data stream, and the second antenna panel sends a 3-stream data stream.
  • the terminal device determines the DMRS table corresponding to the third quantity, and determines the fourth DMRS port set for sending the third quantity of data streams according to the value indicated by the fourth field and the DMRS table corresponding to the third quantity.
  • the terminal device sends the third quantity of data streams to the network device according to the fourth DMRS port set. It can be understood that the terminal device sends the third quantity of data streams to the network device according to the fourth DMRS port set and the third precoding matrix. It can also be understood that the first antenna panel of the terminal device sends the third quantity of data streams to the network device according to the fourth DMRS port set and the third precoding matrix, and the second antenna panel of the terminal device does not send data streams to the network device.
  • the terminal device can determine to use a single antenna panel to send a data stream to the network device based on the second information sent by the network device, thereby enabling dynamic switching between multi-antenna panel transmission and single antenna panel transmission.
  • FIG5 is a schematic block diagram of a communication device 500 according to an embodiment of the present application.
  • the device can be applied to or deployed in the terminal device in the method embodiment of FIG3.
  • the communication device 500 includes:
  • a transceiver unit 510 is configured to receive first information from a network device, where the first information includes a first field and a second field, where the first field is used to indicate a first number of data streams sent according to a first precoding matrix and a second number of data streams sent according to a second precoding matrix, where the first number and the second number are positive integers;
  • the processing unit 520 is configured to determine a first demodulation reference signal DMRS port set and a second DMRS port set according to the third number and the second field, wherein the total number of DMRS ports included in the first DMRS port set and the second DMRS port set is equal to the third number, wherein the third number is equal to the sum of the first number and the second number;
  • the transceiver unit 510 is also used to send the first number of data streams to the network device according to the first DMRS port set, and send the second number of data streams to the network device according to the second DMRS port set, the number of DMRS ports included in the first DMRS port set is equal to the first number, the number of DMRS ports included in the second DMRS port set is equal to the second number, and the first number is not equal to the second number.
  • the transceiver unit 510 is further used to receive second information from the network device, where the second information includes a third field and a fourth field, where the third field is used to indicate a third number of data streams sent according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, wherein the third number is equal to zero, and the fourth number is a positive integer;
  • the processing unit 510 is further configured to determine a third DMRS port set according to the fourth number and the fourth field, The number of DMRS ports included in the third DMRS port set is equal to the fourth number;
  • the transceiver unit is further configured to send the fourth number of data streams to the network device according to the third DMRS port set.
  • the first field and the third field include precoding information and a stream number field, or an SRI field
  • the second field and the fourth field include an antenna port field.
  • FIG6 is a schematic block diagram of a communication device 600 according to an embodiment of the present application.
  • the device can be applied to or deployed in a network device in the method embodiment of FIG3.
  • the communication device 600 includes:
  • the transceiver unit 610 is configured to send first information to a terminal device, where the first information includes a first field and a second field, where the first field is used to indicate a first number of data streams sent by the terminal device according to a first precoding matrix and a second number of data streams sent according to a second precoding matrix, and the second field is used by the terminal device to determine a first DMRS port set and a second DMRS port set, wherein the first number and the second number are positive integers;
  • the transceiver unit 610 is also used to receive the first number of data streams from the terminal device according to the first DMRS port set, and to receive the second number of data streams from the terminal device according to the second DMRS port set, the number of DMRS ports included in the first DMRS port set is equal to the first number, the number of DMRS ports included in the second DMRS port set is equal to the second number, and the first number is not equal to the second number.
  • the transceiver unit 610 is further used for:
  • the second information including a third field and a fourth field, the third field being used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, and the fourth field being used by the terminal device to determine a third DMRS port set, wherein the third number is equal to zero, and the fourth number is a positive integer;
  • the fourth number of data streams from the terminal device is received according to the third DMRS port set, and the number of DMRS ports included in the third DMRS port set is equal to the fourth number.
  • the first field and the third field include precoding information and a stream number field, or an SRI field
  • the second field and the fourth field include an antenna port field.
  • FIG7 is a schematic block diagram of a communication device 700 according to an embodiment of the present application.
  • the device can be applied to or deployed in the terminal device in the method embodiment of FIG4.
  • the communication device 700 includes:
  • the transceiver unit 710 is configured to receive second information from a network device, where the second information includes a third field and a fourth field, where the third field is used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, where the third number is equal to zero and the fourth number is a positive integer;
  • a processing unit 720 is configured to determine a third DMRS port set according to the fourth number and the fourth field, where the number of DMRS ports included in the third DMRS port set is equal to the fourth number;
  • the transceiver unit 710 is further configured to send the fourth number of data streams to the network device according to the third DMRS port set.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • FIG8 is a schematic block diagram of a communication device 800 according to an embodiment of the present application.
  • the device may be applied to or deployed in a network device in the method embodiment of FIG4 .
  • the communication device 800 includes:
  • the transceiver unit 810 is configured to send second information to the terminal device, where the second information includes a third field and a fourth field, where the third field is used to indicate a third number of data streams sent by the terminal device according to a third precoding matrix and a fourth number of data streams sent according to a fourth precoding matrix, and the fourth field is used by the terminal device to determine a third DMRS port set, where the third number is equal to zero and the fourth number is a positive integer;
  • the transceiver unit 810 is further configured to receive the fourth number of data streams from the terminal device according to the third DMRS port set, wherein the number of DMRS ports included in the third DMRS port set is equal to the fourth number.
  • the third field includes precoding information and a stream number field, or an SRI field
  • the fourth field includes an antenna port field.
  • FIG. 9 is a schematic block diagram of a communication device 900 according to an embodiment of the present application.
  • the communication device 900 includes: a processor 910 and a memory 920 storing computer codes or instructions, wherein the processor 910 runs the computer codes or instructions so that the method in the embodiment of the present application is executed by the communication device 900.
  • the communication device 900 may be a terminal device in the embodiment of the present application.
  • FIG10 is a schematic block diagram of a communication device 1000 according to an embodiment of the present application.
  • the communication device 1000 includes: a processor 1010 and a memory 1020 storing computer codes or instructions, wherein the processor 1010 runs the computer codes or instructions so that the method in the embodiment of the present application is executed by the communication device 1000.
  • the communication device 1000 may be a network device in the embodiment of the present application.
  • the processor 910 and the processor 1010 described above may be an integrated circuit chip with signal processing capabilities.
  • each step of the above method embodiment can be completed by an integrated logic circuit of hardware in the processor or an instruction in the form of software.
  • the above processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application-specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware decoding processor, or may be executed by a combination of hardware and software modules in a decoding processor.
  • the software module may be located in a mature storage medium in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc.
  • the storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • An embodiment of the present application also provides a communication system, including a terminal device in the data sending method provided in the embodiment of the present application and other communication devices communicating with the terminal device, a network device and other communication devices communicating with the network device.
  • the present application also provides a computer-readable storage medium on which a computer program for implementing the method in the above method embodiment is stored.
  • the computer program When the computer program is run on a computer, the computer can implement the method in the above method embodiment.
  • An embodiment of the present application further provides a computer program product, which includes a computer program code.
  • a computer program product which includes a computer program code.
  • An embodiment of the present application also provides a chip, including a processor, wherein the processor is connected to a memory, the memory is used to store a computer program, and the processor is used to execute the computer program stored in the memory, so that the chip executes the method in the above method embodiment.
  • a and/or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this article generally indicates that the associated objects before and after are in an "or” relationship; the term “at least one” in this application can mean “one” and "two or more”.
  • A, B and C can represent seven situations: A exists alone, B exists alone, C exists alone, A and B exist at the same time, A and C exist at the same time, C and B exist at the same time, and A, B and C exist at the same time.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed.
  • Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be 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 distributed on multiple network units. Some or all of the units may 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, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially or partly contributed to the prior art.
  • part of the technical solution can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes.

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Abstract

La présente demande concerne un procédé et un appareil d'envoi de données, permettant d'améliorer la fiabilité de transmission de données. Le procédé comprend les étapes suivantes : un dispositif terminal reçoit des premières informations en provenance d'un dispositif de réseau, un premier champ dans les premières informations étant utilisé pour indiquer un premier nombre de flux de données envoyés selon une première matrice de précodage et un second nombre de flux de données envoyés selon une seconde matrice de précodage ; le dispositif terminal détermine un premier ensemble de ports de signal de référence de démodulation (DMRS) et un deuxième ensemble de ports DMRS selon un troisième nombre et un deuxième champ dans les premières informations, le troisième nombre étant égal à la somme du premier nombre et du deuxième nombre ; et le dispositif terminal envoie, au dispositif de réseau, le premier nombre de flux de données selon le premier ensemble de ports DMRS, et envoie, au dispositif de réseau, le second nombre de flux de données selon le second ensemble de ports DMRS, le nombre de ports DMRS compris dans le premier ensemble de ports DMRS étant égal au premier nombre, le nombre de ports DMRS compris dans le second ensemble de ports DMRS étant égal au second nombre, et le premier nombre n'étant pas égal au second nombre.
PCT/CN2023/119661 2022-09-30 2023-09-19 Procédé et appareil d'envoi de données WO2024067244A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110535614A (zh) * 2019-09-03 2019-12-03 中兴通讯股份有限公司 信令信息的传输方法、装置、通信节点和存储介质
CN110945822A (zh) * 2017-12-01 2020-03-31 Lg 电子株式会社 在无线通信系统中的上行链路发送和接收方法及其装置
WO2021237666A1 (fr) * 2020-05-29 2021-12-02 Qualcomm Incorporated Indication de pré-codeur pour transmissions sur liaison montante non basées sur un livre de codes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110945822A (zh) * 2017-12-01 2020-03-31 Lg 电子株式会社 在无线通信系统中的上行链路发送和接收方法及其装置
CN110535614A (zh) * 2019-09-03 2019-12-03 中兴通讯股份有限公司 信令信息的传输方法、装置、通信节点和存储介质
WO2021237666A1 (fr) * 2020-05-29 2021-12-02 Qualcomm Incorporated Indication de pré-codeur pour transmissions sur liaison montante non basées sur un livre de codes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HUAWEI, HISILICON: "Discussion on UL precoding indication for multi-panel transmission", 3GPP TSG RAN WG1 MEETING #110 R1-2205884, 12 August 2022 (2022-08-12), XP052273814 *
HUAWEI, HISILICON: "Discussion on UL precoding indication for multi-panel transmission", 3GPP TSG-RAN WG1 MEETING #110BIS-E R1-2208444, 30 September 2022 (2022-09-30), XP052276369 *

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