WO2020191776A1 - 一种下行数据传输方法、终端设备及存储介质 - Google Patents
一种下行数据传输方法、终端设备及存储介质 Download PDFInfo
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- WO2020191776A1 WO2020191776A1 PCT/CN2019/080256 CN2019080256W WO2020191776A1 WO 2020191776 A1 WO2020191776 A1 WO 2020191776A1 CN 2019080256 W CN2019080256 W CN 2019080256W WO 2020191776 A1 WO2020191776 A1 WO 2020191776A1
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- dmrs port
- downlink data
- indication information
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- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
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Definitions
- the present invention relates to the field of wireless communication technology, in particular to a downlink data transmission method, terminal equipment and storage medium.
- New Radio (NR) system there are multiple transmission reception points (Transmission Reception Point, TRP), or multiple antenna panels (Antenna panels), or multiple beams (beam) to simultaneously transmit downlink data to terminal devices Scene.
- the terminal device detects a physical downlink control channel (Physical Downlink Control Channel, PDCCH) to obtain a downlink control information (DCI).
- PDCCH Physical Downlink Control Channel
- DCI indicates multiple TRPs, or multiple Antenna panels, or multiple beams at the same time.
- Relevant instructions for transferring data In related technologies, downlink data transmission includes three implementation modes: one TRP transmits data on multiple time slots (slots), multiple TRPs transmit data, and multiple TRPs transmit data on multiple slots.
- slots time slots
- multiple TRPs transmit data
- multiple TRPs transmit data on multiple slots.
- embodiments of the present invention provide a downlink data transmission method, terminal equipment, and storage medium, so that the terminal equipment can switch between different downlink data transmission modes or mix different downlink data transmission modes based on DCI. .
- an embodiment of the present invention provides a downlink data transmission method, including: a terminal device determines a transmission configuration indicator (Transmission Configuration Indicator, TCI) state corresponding to a downlink data transmission based on downlink control information; determining based on the downlink control information A Redundancy Version (RV) value corresponding to downlink data transmission; receiving downlink data based on the TCI state and the RV value.
- TCI Transmission Configuration Indicator
- RV Redundancy Version
- an embodiment of the present invention provides a terminal device, the terminal device includes: a processing unit configured to determine a transmission configuration indication state corresponding to downlink data transmission based on downlink control information; and determine downlink data based on the downlink control information The corresponding redundancy version value is transmitted; the transceiver unit is configured to receive downlink data based on the transmission configuration indication state and the redundancy version value.
- an embodiment of the present invention provides a terminal device, including: a processor and a memory configured to store a computer program that can run on the processor, wherein the processor is configured to execute the above-mentioned computer program when running the computer program The steps of the downlink data transmission method executed by the terminal device.
- an embodiment of the present invention provides a storage medium that stores an executable program, and when the executable program is executed by a processor, it implements the downlink data transmission method executed by the terminal device.
- the terminal device determines the transmission configuration indication state corresponding to the downlink data transmission based on the downlink control information; determines the redundancy version value corresponding to the downlink data transmission based on the downlink control information; Configure the indication state and the redundancy version value to receive downlink data.
- the terminal device determines the transmission configuration indication state corresponding to the downlink data transmission based on the downlink control information; determines the redundancy version value corresponding to the downlink data transmission based on the downlink control information; Configure the indication state and the redundancy version value to receive downlink data.
- the downlink data transmission is performed in multiple time slots and different TRP performs downlink data transmission, and uses different TRPs for downlink data transmission in different time slots.
- the way to determine the transmission configuration indication state and the redundancy version value can reduce the complexity of the terminal equipment receiving downlink transmission data, reduce signaling overhead, obtain better diversity effects, and reduce delay.
- Figure 1 is a schematic diagram of a downlink data transmission mode of the present invention
- FIG. 2 is a schematic diagram of another downlink data transmission mode of the present invention.
- FIG. 3 is a schematic diagram of the structure of multiple TRPs simultaneously transmitting data according to the present invention.
- FIG. 4 is a schematic diagram of the structure of multiple beams simultaneously transmitting data according to the present invention.
- Fig. 5 is a schematic diagram of a method for configuring the TCI state of the present invention.
- FIG. 6 is a schematic diagram of the composition structure of a communication system according to an embodiment of the present invention.
- FIG. 7 is a schematic diagram of an optional processing flow of a downlink data transmission method provided by an embodiment of the present invention.
- FIG. 8 is a first schematic diagram of a TCI state provided by an embodiment of the present invention.
- FIG. 9 is a second schematic diagram of a TCI state provided by an embodiment of the present invention.
- FIG. 10 is a schematic diagram of the corresponding TCI state when the terminal device determines each downlink data transmission according to the third preset strategy according to the embodiment of the present invention.
- 11 is a schematic diagram 1 of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention
- FIG. 12 is a second schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- FIG. 13 is a third schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- FIG. 14 is a fourth schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- 15 is a schematic diagram 5 of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- 16 is a sixth schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- FIG. 17 is a seventh schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- 18 is the eighth schematic diagram of the relationship between the DMRS port set and the RV value provided by an embodiment of the present invention.
- FIG. 19 is a schematic diagram of the composition structure of a terminal device provided by an embodiment of the present invention.
- FIG. 20 is a schematic diagram of the hardware composition structure of a terminal device provided by an embodiment of the present invention.
- a downlink data transmission method as shown in Figure 1 can be used to transmit data on multiple time slots (slots) through a TRP; another downlink data transmission method as shown in Figure 2 can also be used , Transmission on multiple TRPs; data can also be transmitted on multiple slots through multiple TRPs.
- the structure diagram of multiple TRPs transmitting data at the same time as shown in Figure 3, the network device transmits data with the terminal device at the same time through TRP1 and TPR2; the structure diagram of multiple beams transmitting data at the same time, as shown in Figure 4, the network device passes through beam1 and beam2 transmit data with the terminal device.
- multiple TRPs, or multiple Antenna panels, or multiple beams are available for simultaneous data transmission, except for the above-mentioned terminal device that detects multiple TRPs, or multiple Antenna panels, or multiple beams by detecting one PDCCH.
- the terminal device receives different PDCCHs from different TRPs, or Antenna panels, or beams, detects the corresponding DCI on each PDCCH, and each DCI indicates a corresponding data transmission mode Related instructions for.
- the terminal device obtains a DCI indicating multiple TRPs, or multiple Antenna panels, or multiple beams simultaneously transmitting data by detecting a PDCCH
- the terminal device only needs to detect one PDCCH, so the control channel detection complexity is low, but Information needs to be quickly exchanged between different Antenna panels/TRP/beam.
- the terminal device For the scenario where the terminal device receives different PDCCHs from different TRPs, or Antenna panels, or beams, and detects the corresponding DCI on each PDCCH, the terminal device needs to detect multiple PDCCHs on the same carrier at the same time, which is complicated. The degree of increase, but will improve the flexibility and robustness.
- the terminal device receives different PDCCHs from different TRPs, or Antenna panels, or beams, and detects the corresponding DCI on each PDCCH, including at least the following:
- TRPs belong to the same cell, and the connection (backhaul) between TRPs is ideal (that is, information can be exchanged quickly and dynamically).
- TRPs belong to the same cell, and the backhaul between TRPs is not ideal (that is, TRPs cannot exchange information quickly, and can only exchange data relatively slowly).
- TRPs belong to different cells, and the backhaul between TRPs is ideal.
- TRPs belong to different cells, and the backhaul between TRPs is not ideal.
- Multiple beam/Antenna panels belong to the same cell, and the backhaul between beam/Antenna panels is ideal (that is, rapid information exchange and dynamic information exchange).
- the terminal device can use the characteristics of the transmission environment corresponding to the data transmission to improve the receiving algorithm.
- the statistical characteristics of the channel can be used to optimize the design and parameters of the channel estimator.
- these characteristics corresponding to data transmission are represented by QCL status (QCL-Info).
- TCI Transmission Configuration Indicator
- a TCI state may include: TCI state ID and QCL information 1 for identifying a TCI state; optionally, a TCI state may also include QCL information 2.
- a QCL message contains the following information:
- the QCL type configuration can be one of QCL type A, QCL type B, QCL type C or QCL type D;
- the QCL reference signal configuration includes: the cell identification (ID) where the reference signal is located, the bandwidth part (BandWidth Part, BWP) ID, and the reference signal identification; where the reference signal identification may be Channel state information reference signal (Channel State Information-Reference Signal, CSI-RS) resource ID or synchronization signal block (Synchronization Signal Block, SSB) index.
- ID the cell identification
- BWP BandWidth Part
- QCL type must be one of typeA, typeB, and typeC; if another QCL information is to be configured, the QCL type of the other QCL information must be QCL type D.
- QCL type configurations is as follows:
- the network device can indicate the corresponding TCI status for the downlink signal or downlink channel. If the network device configures the target downlink channel or the QCL reference signal of the target downlink signal as a reference SSB or reference CSI-RS resource through the TCI state, and the QCL type is configured as typeA, typeB or typeC; the terminal device can assume that the target downlink signal is The large-scale parameters of the reference SSB or the reference CSI-RS resource are the same, and the large-scale parameters are determined by QCL type configuration.
- the terminal device can use and receive the reference SSB or reference Receive beams (ie, Spatial Rx parameter) with the same CSI-RS resources to receive the target downlink signal.
- the target downlink channel (or target downlink signal) and its reference SSB or reference CSI-RS resource are transmitted by the same TRP or the same Antenna panel or the same beam on the network device side. If the two downlink signals or downlink channels transmit TRP, antenna panel, or beam are different, different TCI states are usually configured.
- the TCI status can be indicated through radio access control (Radio Resource Control, RRC) signaling or a combination of RRC signaling and media access control (Media Access Control, MAC) signaling.
- RRC Radio Resource Control
- MAC media access control
- the TCI status configuration method is shown in Figure 5.
- the available TCI status set is indicated by RRC signaling, and some of the TCI statuses are activated by MAC signaling, and finally through the TCI status indication field in DCI Indicate one or two TCI states from the activated TCI state for the PDSCH scheduled by the DCI.
- DMRS Demodulation Reference Sgnal
- Type 1DMRS has the following attributes:
- CDM Code Division Multiplexing
- OFDM Orthogonal Frequency Division Multiplexing
- Type 2DMRS has the following attributes:
- the network device When transmitting downlink data, the network device will instruct the terminal device which ports are used for this transmission. If data is sent from different TRP/Antenna panel/beam, the ports in the same CDM group will be sent from one TRP/panel/beam; therefore, the corresponding characteristics will be similar ('QCL-TypeA','QCL-TypeB' ,'QCL-TypeC','QCL-TypeD'); correspondingly, it can correspond to the same TCI state. Different CDM groups may be sent from different TRP/Antenna panels/beams, which can correspond to different TCI states.
- the downlink data transmission method in the embodiment of the present invention can be applied to multiple downlink data transmissions; for example, in order to improve the transmission reliability of PDSCH, repeat PDSCH transmission, that is, PDSCH carrying the same data passes through different time slots/TRP/Antenna panel/beam /Redundancy Version (RV) and other multiple transmissions to obtain diversity gain and reduce the probability of false detection (BLER).
- RV Redundancy Version
- the present invention provides a downlink data transmission method.
- the downlink data transmission in the embodiments of this application can be applied to various communication systems, such as: Global System of Mobile Communications (GSM) system, Code Division Multiple Access (Code Division Multiple) Access, CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE frequency division dual Industrial (Frequency Division Duplex, FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communications System or 5G system, etc.
- GSM Global System of Mobile Communications
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- WiMAX Worldwide Interoperability for Microwave Access
- the communication system 100 applied in the embodiment of the present application is shown in FIG. 6.
- the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or called a communication terminal or terminal).
- the network device 110 may provide communication coverage for a specific geographic area, and may communicate with terminal devices located in the coverage area.
- the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), it can also be the base station (gNB) in the New Radio (NR)/5G system, or the radio control in the Cloud Radio Access Network (CRAN) Device, or the network device can be a mobile switching center, relay station, access point, vehicle-mounted device, wearable device, hub, switch, bridge, router, network side device in 5G network, or public land mobile network for future evolution ( Public Land Mobile Network (PLMN) network equipment, etc.
- BTS Base Transceiver Station
- NodeB, NB base station
- gNB New Radio
- CRAN Cloud Radio Access Network
- the network device can be a mobile switching center, relay station, access point, vehicle-mounted device, wearable device, hub, switch,
- the communication system 100 also includes at least one terminal device 120 located within the coverage area of the network device 110.
- the "terminal equipment” used here includes but is not limited to connection via wired lines, such as via public switched telephone networks (PSTN), digital subscriber lines (Digital Subscriber Line, DSL), digital cables, and direct cable connections ; And/or another data connection/network; and/or via a wireless interface, such as for cellular networks, wireless local area networks (WLAN), digital TV networks such as DVB-H networks, satellite networks, AM- FM broadcast transmitter; and/or another terminal device that is set to receive/send communication signals; and/or Internet of Things (IoT) equipment.
- a terminal device set to communicate through a wireless interface may be called a "wireless communication terminal", “wireless terminal” or "mobile terminal”.
- Examples of mobile terminals include, but are not limited to, satellites or cellular phones; Personal Communications System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, Internet/intranet PDA with internet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop receivers or others including radio phone transceivers Electronic device.
- Terminal equipment can refer to access terminals, user equipment (UE), user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile equipment, user terminals, terminals, wireless communication equipment, user agents, or User device.
- the access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), with wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or terminal devices in the future evolution of PLMN, etc.
- SIP Session Initiation Protocol
- WLL Wireless Local Loop
- PDA Personal Digital Assistant
- direct terminal connection (Device to Device, D2D) communication may be performed between the terminal devices 120.
- the 5G system or 5G network may also be referred to as NR system or NR network.
- Figure 6 exemplarily shows one network device and two terminal devices.
- the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. The embodiment does not limit this.
- the communication system 100 may also include other network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
- network entities such as a network controller and a mobility management entity, which are not limited in the embodiment of the present application.
- the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
- the communication device may include a network device 110 with communication functions and a terminal device 120.
- the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
- the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the application.
- the optional processing flow of the downlink data transmission method provided by the embodiment of the present invention, as shown in FIG. 7, includes the following steps:
- Step S201 The terminal device determines the TCI state corresponding to the downlink data transmission based on the DCI.
- the DCI is sent by a network device to a terminal device, and the DCI includes antenna port indication information and TCI status indication information; correspondingly, the terminal device is based on the antenna port indication information and TCI in the DCI
- the status indication information determines the TCI status corresponding to the downlink data transmission.
- the terminal device first determines the K TCI statuses corresponding to this scheduling based on the TCI status indication information in the DCI, and K is greater than 1, and then according to the DMRS port set to which the DMRS port belongs, from the K TCI status
- the TCI status determines the TCI status corresponding to each DMRS port in each downlink data transmission in the time domain, and the DMRS port is indicated by the antenna port indication information in the DCI. In this way, simultaneous transmission of downlink data from multiple TRPs can reduce the number of repetitions in the time domain, thereby reducing system delay.
- TRP 2 TRPs
- the DMRS port set to which the DMRS port belongs is determined by the terminal device based on the DMRS CDM group corresponding to the DMRS port indicated by the port indication information in the DCI, and the correspondence between the DMRS CDM group and the DMRS port set The relationship is determined.
- the port indication information in the DCI indicates that the DMRS port corresponds to 2 or 3 DMRS CDM groups, and the DMRS ports corresponding to different DMRS CDM groups belong to 2 DMRS port sets (DMRS port set 0 and DMRS port set). 1).
- the relationship between the DMRS CDM group number and the DMRS port set 0 and the DMRS port set 1 may be determined by the terminal device according to a predetermined rule, or may be determined by the terminal device according to configuration signaling sent by the network device.
- the relationship between the DMRS CDM group number and DMRS port set 0 and DMRS port set 1 includes at least one of the following:
- the DMRS port corresponding to DMRS CDM group 0 corresponds to DMRS port set 0, and the DMRS port corresponding to DMRS CDM group 1 corresponds to DMRS port set 1; or the DMRS port corresponding to DMRS CDM group 0 corresponds to DMRS port set 1, and the DMRS port corresponding to DMRS CDM group 1 corresponds to DMRS port set 0. It can be understood that the larger number of the DMRS CDM group corresponds to the larger number of the DMRS port combination; or the larger number of the DMRS CDM group corresponds to the smaller number of the DMRS port combination.
- DMRS ports of DMRS CDM group 0 and DMRS CDM group 2 correspond to DMRS port set 0, and DMRS ports of DMRS CDM group 1 correspond to DMRS port set 1; or DMRS ports of DMRS CDM group 0 and DMRS CDM group 2 correspond to DMRS port set 1 , DMRS port of DMRS CDM group 1 corresponds to DMRS port group 0.
- the DMRS port of DMRS CDM group 0 corresponds to DMRS port set 0
- the DMRS port of DMRS CDM group 1 corresponds to DMRS port set 1
- the DMRS port of DMRS CDM group 2 corresponds to DMRS port set 2.
- the DMRS port set to which the DMRS port belongs is determined by the terminal device based on the first indication information sent by the network device. It can be understood that the network device sends the first indication information to the terminal device, and the terminal device determines the DMRS port set to which the DMRS port belongs according to the first indication information.
- the terminal device when the first indication information is configured, the terminal device is based on the DMRS CDM group corresponding to the DMRS port indicated by the port indication information in the DCI, and the correspondence between the DMRS CDM group and the DMRS port set To determine the DMRS port set to which the DMRS port belongs. For example, use true or false to indicate whether the first indication information is configured (false is the default value, that is, when the first indication information is not configured, the default value is false), when the corresponding field of the information received by the terminal device is true
- the DMRS port set to which the DMRS port belongs is determined based on the foregoing embodiment of the present invention.
- the DMRS port set to which the DMRS port belongs is determined by the terminal device based on the first preset policy.
- the first preset policy is: DMRS ports included in each DMRS port set.
- DMRS port set 0 includes DMRS ports x1, x2, ...
- DMRS port set 1 includes DMRS ports y1, y2, ...
- DMRS port set 0 includes DMRS ports x1, x2, and DMRS port set 1 includes DMRS port y1 .
- all DMRS ports belong to a DMRS port set; for example, when the corresponding field in the information received by the terminal device is not configured, it means that the first indication information is not configured. , The terminal device determines that all DMRS ports belong to a DMRS port set.
- the value corresponding to the first indication information is the first value
- all DMRS ports belong to one DMRS port set.
- the first value can be flexibly set, for example, the first value is set to 1.
- the DMRS to which the DMRS port indicated by the port indication information in the DCI belongs is determined based on a preset correspondence between a DMRS port and a DMRS port set or a preset strategy Port collection.
- the second value can be flexibly set, for example, the second value is set to 0.
- the DMRS port set to which the DMRS port belongs is determined by the terminal device based on the first indication information.
- the first indication information indicates: DMRS ports included in each DMRS port set; for example, DMRS port set 0 includes DMRS ports x1, x2, ..., DMRS port set 1 includes DMRS ports y1, y2, ...; or DMRS Port set 0 includes DMRS ports x1 and x2, and DMRS port set 1 includes DMRS port y1; or DMRS port set 0 includes DMRS ports x1 and x2 (by default, other ports belong to DMRS port set 1).
- the DMRS port set to which the DMRS port belongs is determined through the first indication information sent by the network device, which can improve the flexibility of configuring the TCI state corresponding to the downlink data transmission.
- the DMRS port set to which the DMRS port belongs is determined above, and the following describes how the terminal device determines the TCI state corresponding to the DMRS port.
- the network device Before the terminal device determines the TCI status corresponding to the DMRS port, the network device sends second indication information to the terminal device, and the terminal device determines the number of transmissions of the downlink data in the time domain based on the second indication information.
- the second indication information is a physical downlink shared channel aggregation factor (PDSCH-AggregationFactor).
- DMRS ports corresponding to different DMRS port sets correspond to different TCI states; each time downlink data is transmitted in the time domain, the TCI state corresponding to each DMRS port is constant. For example, the terminal device determines that the DMRS port corresponding to DMRS port set 0 corresponds to TCI state 0, and the DMRS port corresponding to DMRS port set 1 corresponds to TCI state 1. In the M transmissions in the time domain, the terminal device performs processing according to the corresponding relationship. Downlink data reception.
- the terminal device determines the TCI state corresponding to each DMRS port in the downlink data transmission according to the second preset strategy based on the TCI state corresponding to the last downlink data transmission.
- the second preset strategy includes at least one of the following: TCI state offset, TCI state cycle, and TCI state swapping.
- the terminal device determines the TCI status corresponding to DMRS ports belonging to different DMRS port sets during the first downlink data transmission; for example, the DMRS port corresponding to DMRS port set 0 corresponds to TCI status 0, and the DMRS port corresponding to DMRS port set 1 Corresponds to TCI state 1; in the M transmissions in the time domain, the terminal device changes the corresponding relationship between the DMRS port and the TCI state according to the corresponding relationship in the previous transmission according to the second preset strategy, and according to this transmission Correspondence between time to carry out corresponding data reception.
- TCI state 0 corresponds to TRP0 and DMRS port set 0
- TCI state 1 corresponds to TRP1 and DMRS port set 1
- TCI state 1 corresponds to TRP1 and DMRS port set 1.
- the TCI state corresponding to the DMRS port in each downlink data transmission in the time domain is determined according to the third preset policy.
- the third preset strategy includes at least one of the following: each downlink data transmission sequentially uses one TCI state in the TCI sequence formed by the K TCI states, and when the K TCI states are used up , The downlink data transmission repeats the sequence of using K TCI states; and selecting the same number of TCI states from the K TCI states as the number of times the downlink data is transmitted in the time domain, and each downlink data transmission sequence uses one TCI status.
- the third preset strategy is to use one TCI state in the TCI sequence composed of the K TCI states in sequence for each downlink data transmission, and when the K TCI states are used up ,
- the downlink data transmission repeats the sequence of using K TCI states; for example, K TCI states are used sequentially, and when the K TCI states are used up, they are used sequentially from the first TCI state.
- the third preset strategy is to select the same number of TCI states from the K TCI states as the number of times the downlink data is transmitted in the time domain, and use one TCI state for each downlink data transmission sequence; for example, , Select the first M TCI states from K TCI states and use them sequentially.
- the terminal device determines the corresponding TCI state diagram for each downlink data transmission according to the third preset strategy, as shown in Figure 10: the TCI state corresponding to the first downlink data transmission and the third downlink data transmission is 0, the corresponding TCI status of the second downlink data transmission and the fourth downlink data transmission is 1.
- Step S202 Determine an RV value corresponding to downlink data transmission based on the DCI.
- the terminal device determines the RV value corresponding to the downlink data transmission based on the antenna port indication information and/or the RV indication information in the DCI.
- the TCI status corresponding to the DMRS port can be determined first, and then the RV value corresponding to the downlink data transmission is determined; when the TCI status corresponding to the DMRS port is determined first, the DMRS port set to which the DMRS port belongs has been obtained, so When determining the RV value corresponding to the downlink data transmission, only the RV indication information in the DCI needs to be determined.
- the RV value corresponding to each downlink data transmission is determined based on the corresponding relationship between the RV value in the RV indication information in the DCI and the number of downlink data transmissions; in each downlink data transmission in the time domain, all The DMRS port corresponds to the same RV value. In this way, it is possible to reduce the processing flow for the terminal device to perform downlink data transmission.
- the T DMRS port sets corresponding to one downlink data transmission in the time domain correspond to the same RV value; among them, there is no intersection between the T DMRS port sets.
- the terminal device selects one of the Z correspondences according to the redundancy version indication information in the DCI indication to determine the RV value used in the nth transmission.
- the Z types of correspondences may be Z types of correspondences between RV values specified in the protocol and M transmissions.
- each row in Table 1 represents the corresponding relationship between the RV value and the M downlink data transmission relationship.
- the redundant version indication information in the DCI indicator can determine which row to use.
- X0, X1, X2, X3 and the redundant version indication information in the DCI can have values 0, 1, 2, and 3 in any combination.
- FIG. 11 schematic diagram 1 of the relationship between the DMRS port set and the RV value provided by the embodiment of the present invention, as shown in FIG. 11, based on the redundancy version indication information in the DCI, the terminal device determines that the RV value used for the first downlink data transmission is 2.
- the RV value used in the second downlink data transmission is 3, the RV value used in the third downlink data transmission is 1, and the RV value used in the fourth downlink data transmission is 0.
- the redundant version indication information in the DCI is different, and the above-mentioned corresponding relationship is also different.
- the terminal device selects the RV value corresponding to each DMRS port set to which the DMRS port belongs based on the RV indication information in the DCI; in each downlink data transmission in the time domain, the DMRS port to which the DMRS port belongs The RV value corresponding to the set is constant. In this way, the processing procedure for the terminal device to receive downlink data transmission can be simplified. For example, T DMRS port sets corresponding to one downlink data transmission in the time domain correspond to different RV values; when different downlink data transmissions in the time domain, the corresponding relationship between the T DMRS port sets and the RV value remains unchanged.
- the terminal device selects one of the Z correspondences according to the redundancy version indication information in the DCI indication to determine the RV value corresponding to the t-th DMRS port.
- each row in Table 2-1, Table 2-2, and Table 2-3 represents the correspondence between the RV value and the set of T DMRS ports, indicated by DCI
- the second schematic diagram of the relationship between the DMRS port set and the RV value provided by the embodiment of the present invention in the first downlink data transmission, the RV value corresponding to the DMRS port set 0 is 0, and the DMRS port set 1 The corresponding RV value is 2; then in the second, third, and fourth downlink data transmissions, the RV value corresponding to DMRS port set 0 is 0, and the RV value corresponding to DMRS port set 1 is 2.
- the terminal device selects the RV value corresponding to each DMRS port set to which the DMRS port belongs in the last downlink data transmission in the time domain based on the RV indication information in the DCI, and the DMRS port is determined by the The antenna port indication information in the DCI indicates; based on the RV value corresponding to each set of DMRS ports in the one downlink data transmission, according to the fourth preset strategy, determine the one or more subsequent downlink data transmissions in.
- the fourth preset strategy includes at least one of the following: value offset of the RV value, position offset in the RV value sequence, and RV value exchange. In this way, better downlink data transmission performance can be obtained, different RV values are used for different downlink data transmissions, and coding gain can be fully utilized.
- T DMRS port sets corresponding to one downlink data transmission in the time domain correspond to different RV values; for different downlink data transmissions in the time domain, the RV value corresponding to the DMRS port set corresponds to the previous downlink data transmission.
- the value of RV is determined according to the fourth preset strategy.
- the terminal device selects one of the Z correspondences according to the redundancy version indication information in the DCI indication to determine the RV value corresponding to the t-th DMRS port during the first downlink data transmission ;
- the Z correspondences may be the correspondences between the RV value specified in the protocol and the T DMRS port sets.
- the fourth schematic diagram of the relationship between the DMRS port set and the RV value provided by the embodiment of the present invention is shown in FIG. 14.
- the terminal device performs the first downlink data transmission
- the RV value corresponding to the set of t DMRS ports is rv 1,t , and then according to the preset list (for example, 0,2,3,1) , the ⁇ , 2 ⁇ ... values after rv 0,t are selected for the second, ..., the RV value corresponding to the t-th DMRS port set in M transmissions.
- the list (0,2,3,1) reaches the end, it recycles from the beginning.
- the terminal device determines the RV value corresponding to each DMRS port set to which the DMRS port belongs in each downlink data transmission based on the RV indication information in the DCI.
- the terminal device determines the RV value corresponding to each DMRS port set in each downlink data transmission based on the corresponding relationship between the downlink data transmission sequence and the DMRS port set and the RV value; for example, based on a specific sequence A sequence of RV values, a set of DMRS ports in one transmission corresponds to RV values adjacent to each other in the sequence of RV values, where adjacent locations include adjacent cyclic locations.
- the RV value sequence is RV1, RV2, RV3...RVn
- the RV value corresponding to DMRS port set 0 is RV1
- the RV value corresponding to DMRS port set 1 is RV2
- the RV value corresponding to DMRS port set 0 is RV3
- the RV value corresponding to DMRS port set 1 is RV4
- n is an even number
- the RV value corresponding to port set 0 is RV1
- the RV value corresponding to DMRS port set 1 is RV2
- the RV value corresponding to DMRS port set 1 is RV2
- the RV value of is RVn
- the RV value corresponding to DMRS port set 1 is RV1.
- the terminal equipment according to the first downlink data transmission corresponding to the T DMRS port set, the second downlink data transmission corresponding to the T DMRS port set, until the Mth transmission of the corresponding T DMRS port set
- the sequence determines the RV corresponding to each DMRS port set during each time domain transmission.
- the Z types of correspondence may be the correspondence between the RV value specified by the protocol and the T DMRS port sets and M transmissions.
- the redundant version indication information in the DCI indication can determine which row to use To determine the RV value corresponding to the t-th DMRS port.
- X0, X1, X2, X3 and the redundant version indication information in the DCI can have values 0, 1, 2, and 3 in any combination.
- the value options of a are 0, +1, -1; the value options of b are 0, +1, -1.
- the terminal device determines the RV value corresponding to each DMRS port set in each downlink data transmission based on the corresponding relationship between each DMRS port set and the RV value in M downlink data transmissions.
- the terminal equipment according to the M downlink data transmissions corresponding to the first DMRS port set, M downlink data transmissions corresponding to the second DMRS port set, until the M time domain corresponding to the T-th DMRS port set
- the transmission sequence determines the RV value corresponding to each DMRS port set during each time domain transmission; for example, based on a specific sequence of RV values, multiple transmissions of the same DMRS port set correspond to adjacent positions in the RV value sequence RV value of, where adjacent positions include adjacent circular positions.
- the RV value sequence is RV1, RV2, RV3...RVn.
- RV1 the RV value corresponding to DMRS port set 0 during the first downlink data transmission
- RV2 the DMRS port set The RV value corresponding to 0
- RVn the RV value corresponding to DMRS port set 0
- RV1 the RV value corresponding to DMRS port set 0
- the terminal device selects one of the above-mentioned Z correspondences to determine the RV value corresponding to the t-th DMRS port during the nth transmission in the time domain.
- the Z types of correspondence may be the correspondence between the value of RV specified in the protocol, the set of T DMRS ports, and the amount of M transmissions.
- the redundant version indication information in the DCI indication can determine which row to use To determine the RV value corresponding to the t-th DMRS port.
- X0, X1, X2, X3 and the redundant version indication information in the DCI can have values 0, 1, 2, and 3 in any combination.
- the value options of b can be 0, +1, -1.
- the RV values corresponding to different DMRS port sets for each downlink data transmission are: in the first downlink data transmission, the RV value corresponding to DMRS port set 0 is 1, and the RV value corresponding to DMRS port set 1 is 2; the second downlink data transmission In data transmission, the RV value corresponding to DMRS port set 0 is 0, and the RV value corresponding to DMRS port set 1 is 3.
- the terminal device determines the RV value corresponding to the first DMRS port set to which the DMRS port belongs in a downlink data transmission based on the RV indication information in the DCI; based on the RV value corresponding to the first DMRS port set The RV value determines the RV value corresponding to the DMRS port set other than the first DMRS port set to which the DMRS port belongs in the one downlink data transmission according to the fifth preset strategy.
- the fifth preset strategy includes at least one of the following: RV values corresponding to the other DMRS port sets, and the RV values corresponding to the first DMRS port set are accumulated in the order of the third value and then taken Multiple values obtained by modulo; and the corresponding relationship between the RV value and the DMRS port set sequence.
- the fifth preset strategy is that the RV value corresponding to the other DMRS port set is: the RV value corresponding to the first DMRS port set is accumulated in the order of the third value and then modulo multiple Value, the terminal device selects one of the above-mentioned Z correspondences according to the redundancy version indication information in the DCI indication to determine the RV value rv_n used in the nth transmission; wherein, the Z correspondence The relationship may be the corresponding relationship between the RV value specified in the protocol and M downlink data transmissions.
- the terminal device determines the RV value corresponding to different DMRS port sets in the nth downlink data transmission according to the RV value rv_n used in the nth downlink data transmission; specifically, the terminal device uses the RV value in the nth downlink data transmission
- the RV value of rv_n corresponds to DMRS port set 0, and then the ⁇ th value after rv_n is selected according to a prescribed list (for example, 0, 2, 3, 1) and used in DMRS port set 1,..., DMRS port set T in turn.
- a prescribed list for example, 0, 2, 3, 1
- the list (0,2,3,1) reaches the end, it recycles from the beginning.
- each row in Table 5 identifies the corresponding relationship between the RV value and M downlink data transmissions.
- the redundancy version indication information in the DCI indication can determine which row is used to determine the corresponding relationship in the nth transmission. RV value.
- X0, X1, X2, X3 and the redundant version indication information in the DCI can have values 0, 1, 2, and 3 in any combination.
- the terminal device obtains multiple RV information according to the sixth preset strategy based on the RV indication information in the DCI, and the terminal device selects one of the above-mentioned Z correspondences according to each RV information
- the DMRS port is indicated by the antenna port indication information in the DCI
- the Z correspondence may be the RV value specified by the protocol and M Correspondence between secondary downlink data transmissions.
- the sixth preset strategy includes: the values of the multiple RV indication information are multiple values obtained by accumulating the values of the RV indication information in the DCI in the order of the fourth value and then taking the modulo.
- the terminal device determines the RV information corresponding to each DMRS port set according to the sixth preset strategy according to the redundancy version indication information indicated in the DCI, and based on the RV information, determines that each DMRS port set is The corresponding RV value in the second downlink data transmission.
- ⁇ can be understood as an increase value at equal intervals.
- the Z types of correspondence may be the correspondence between the RV value specified in the protocol and M downlink data transmissions.
- each row in Table 6 represents the correspondence between RV and M downlink data transmissions.
- the redundancy version indication information in the DCI indication can determine which row of correspondence to use to determine the nth downlink data.
- X0, X1, X2, X3 and the redundant version indication information in the DCI can have values 0, 1, 2, and 3 in any combination.
- the eighth diagram of the relationship between the DMRS port set and the RV value provided by the embodiment of the present invention, as shown in FIG. 18, taking ⁇ 2, the terminal device determines that in the first downlink data transmission, the RV value corresponding to the DMRS port set 0 is 2.
- the RV value corresponding to DMRS port set 1 is 1; in the second downlink data transmission, the RV value corresponding to DMRS port set 0 is 3, and the RV value corresponding to DMRS port set 1 is 0; in the third downlink data transmission, DMRS
- the RV value corresponding to port set 0 is 1, and the RV value corresponding to DMRS port set 1 is 2.
- the RV value corresponding to DMRS port set 0 is 0, and the RV value corresponding to DMRS port set 1 is 3. .
- the method further includes:
- Step S203 The terminal device receives downlink data based on the TCI state and the RV value.
- the downlink data transmission is any one of the following three types, or a combination of any two:
- the downlink data transmission corresponds to PDSCH in multiple time slots, or multiple consecutive PDSCH transmission opportunities.
- the downlink data transmission corresponds to multiple transmissions occupying different symbols in one time slot.
- the downlink data transmission is multiple downlink data transmissions simultaneously transmitted, and different downlink data transmissions correspond to different TCI states.
- the multiple downlink data transmissions are exactly the same channel-coded bit data; or, when there are multiple downlink data transmissions, the multiple downlink data transmissions are the same Data or different bits of data obtained after the same transport block (Transport Block, TB) is channel-encoded.
- Transport Block Transport Block
- the multiple downlink data transmissions correspond to the same hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) process.
- Hybrid Automatic Repeat reQuest Hybrid Automatic Repeat reQuest
- an embodiment of the present invention also provides a terminal device.
- the composition structure of the terminal device is shown in FIG. 19, and the terminal device 300 includes:
- the processing unit 301 is configured to determine a TCI state corresponding to downlink data transmission based on DCI; determine a redundancy version RV value corresponding to downlink data transmission based on the DCI; the TCI state and the RV value are used for the terminal device 300 Receive downlink data.
- the processing unit 301 is configured to determine the TCI status corresponding to the downlink data transmission based on the antenna port indication information and the TCI status indication information in the DCI.
- the processing unit 301 and the processing unit are configured to determine K TCI states based on the TCI state indication information in the DCI, and K is greater than 1; according to the DMRS port set to which the DMRS port belongs, from The K TCI states determine the TCI state corresponding to each DMRS port in each downlink data transmission in the time domain, and the DMRS port is indicated by the antenna port indication information in the DCI.
- the DMRS port set to which the DMRS port belongs is determined based on the DMRS CDM group corresponding to the DMRS port indicated by the port indication information in the DCI, and the correspondence between the DMRS CDM group and the DMRS port set.
- the corresponding relationship between the DMRS CDM group and the DMRS port set is preset by the terminal device, or sent to the terminal device by the network device through configuration signaling.
- the processing unit 301 and the processing unit are configured to determine the DMRS port set to which the DMRS port belongs based on the first indication information sent by the network device.
- the processing unit 301 is configured to determine that all DMRS ports belong to a DMRS port set when the value corresponding to the first indication information is the first value.
- the processing unit 301 is configured to determine the port indication in the DCI based on the preset correspondence between the DMRS port and the DMRS port set when the value corresponding to the first indication information is the second value The DMRS port set to which the DMRS port indicated by the information belongs.
- the first indication information indicates the DMRS ports included in each DMRS port set.
- the processing unit 301 is configured such that when the first indication information is configured, the terminal device is based on the DMRS CDM group corresponding to the DMRS port indicated by the port indication information in the DCI, and The correspondence between the DMRS CDM group and the DMRS port set determines the DMRS port set to which the DMRS port belongs.
- the corresponding relationship between the DMRS CDM group and the DMRS port set is preset by the terminal device, or is sent to the terminal device by the network device through configuration signaling.
- the processing unit 301 is configured to determine the DMRS port set to which the DMRS port belongs based on a first preset policy when the first indication information is configured.
- the processing unit 301 is configured to determine the DMRS port set to which the DMRS port belongs based on a first preset policy.
- the processing unit 301 is further configured to determine the number of transmissions of the downlink data in the time domain based on the second indication information sent by the network device.
- the second indication information is PDSCH-AggregationFactor.
- the processing unit 301 is configured to determine that the DMRS ports to which different DMRS port sets belong correspond to different TCI states; each time downlink data is transmitted in the time domain, the TCI state corresponding to each DMRS port Constant.
- the processing unit 301 is configured to determine the TCI state corresponding to each DMRS port in the downlink data transmission according to the second preset strategy based on the TCI state corresponding to the last downlink data transmission.
- the second preset strategy includes at least one of the following: TCI state offset, TCI state cycle, and TCI state swapping.
- the processing unit 301 is configured to determine the TCI state corresponding to the DMRS port in each downlink data transmission in the time domain when the number of DMRS port sets is 1, according to the third preset strategy.
- the third preset strategy includes at least one of the following:
- Each downlink data transmission sequentially uses one TCI state in the TCI sequence formed by the K TCI states, and when the K TCI states are used up, the downlink data transmission repeats the use sequence of the K TCI states;
- the processing unit 301 is configured to determine the RV value corresponding to the downlink data transmission based on the antenna port indication information and/or the RV indication information in the DCI.
- the processing unit 301 is configured to determine the RV value corresponding to each downlink data transmission based on the correspondence between the RV value in the RV indication information in the DCI and the number of downlink data transmissions;
- the DMRS port corresponds to the same RV value, and the DMRS port is indicated by the antenna port indication information in the DCI.
- the processing unit 301 is configured to select the RV value corresponding to each DMRS port set to which the DMRS port belongs based on the RV indication information in the DCI;
- the RV value corresponding to the DMRS port set to which the DMRS port belongs is constant, and the DMRS port is indicated by the antenna port indication information in the DCI.
- the processing unit 301 is configured to select the RV value corresponding to each DMRS port set to which the DMRS port belongs in the last downlink data transmission in the time domain based on the RV indication information in the DCI.
- the DMRS port is indicated by the antenna port indication information in the DCI;
- each DMRS port belongs to RV value corresponding to each DMRS port set.
- the fourth preset strategy includes at least one of the following: value offset of the RV value, position offset in the RV value sequence, and RV value exchange.
- the processing unit 301 is configured to determine the RV value corresponding to each DMRS port set to which the DMRS port belongs in each downlink data transmission based on the RV indication information in the DCI, and the DMRS port It is indicated by the antenna port indication information in the DCI.
- the processing unit 301 is configured to determine the RV value corresponding to each DMRS port set in each downlink data transmission based on the corresponding relationship between the downlink data transmission order, the DMRS port set, and the RV value .
- the processing unit 301 is configured to be based on a sequence of RV values in a specific order, and multiple downlink data transmissions of the same DMRS port set correspond to adjacent RV values in the RV value sequence. Adjacent includes adjacent loop positions.
- the processing unit 301 is configured to determine the RV corresponding to each DMRS port set in each downlink data transmission based on the correspondence between each DMRS port set and the RV value in M downlink data transmissions. Value, M is greater than or equal to 1.
- the processing unit 301 is configured to be based on a sequence of RV values in a specific order, and the set of DMRS ports in one transmission corresponds to the RV values that are adjacent in the RV value sequence, where adjacent positions include cycles The location is adjacent.
- the processing unit 301 is configured to determine the RV value corresponding to the first DMRS port set to which the DMRS port belongs in a downlink data transmission based on the RV indication information in the DCI;
- the fifth preset strategy includes at least one of the following:
- the RV value corresponding to the other DMRS port set is multiple values obtained by accumulating the RV value corresponding to the first DMRS port set in the order of the third value and then taking the modulus; and the correspondence between the RV value and the order of the DMRS port set .
- the processing unit 301 is configured to obtain multiple RV information according to the sixth preset strategy based on the RV indication information in the DCI, and each RV information is used to indicate the DMRS port in the downlink data transmission belongs to The RV value corresponding to a set of DMRS ports in, where the DMRS port is indicated by the antenna port indication information in the DCI.
- the sixth preset strategy includes: the values of the multiple RV indication information are multiple values obtained by accumulating the values of the RV indication information in the DCI in the order of the fourth value and then taking the modulo.
- the downlink data transmission is any one of the following three types, or a combination of any two:
- the downlink data transmission corresponds to PDSCH in multiple time slots, or multiple consecutive PDSCH transmission opportunities.
- the downlink data transmission corresponds to multiple transmissions occupying different symbols in one time slot.
- the downlink data transmission is multiple downlink data transmissions simultaneously transmitted, and different downlink data transmissions correspond to different TCI states.
- the multiple downlink data transmissions are exactly the same channel-coded bit data; or, when there are multiple downlink data transmissions, the multiple downlink data transmissions are the same Data or different bit data taken out after the same TB is channel-encoded.
- the multiple downlink data transmissions correspond to the same HARQ process.
- the terminal device 300 further includes a transceiver unit 302 configured to receive downlink data based on the TCI state and the RV value.
- An embodiment of the invention also provides a terminal device, including a processor and a memory for storing a computer program that can run on the processor, where the processor is used to execute the downlink executed by the terminal device when the computer program is running. The steps of the data transfer method.
- the terminal device 700 includes: at least one processor 701, a memory 702, and at least one network interface 704.
- the various components in the terminal device 700 are coupled together through the bus system 705.
- the bus system 705 is used to implement connection and communication between these components.
- the bus system 705 also includes a power bus, a control bus, and a status signal bus.
- various buses are marked as the bus system 705 in FIG. 20.
- the memory 702 may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.
- the non-volatile memory may be ROM, Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), and electrically erasable Programmable read-only memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory, optical disk, or CD-ROM -ROM, Compact Disc Read-Only Memory); Magnetic surface memory can be disk storage or tape storage.
- the volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache.
- RAM random access memory
- SRAM Static Random Access Memory
- SSRAM synchronous static random access memory
- DRAM Dynamic Random Access Memory
- SDRAM Synchronous Dynamic Random Access Memory
- DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
- ESDRAM enhanced -Type synchronous dynamic random access memory
- SLDRAM SyncLink Dynamic Random Access Memory
- direct memory bus random access memory DRRAM, Direct Rambus Random Access Memory
- DRRAM Direct Rambus Random Access Memory
- the memory 702 described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
- the memory 702 in the embodiment of the present invention is used to store various types of data to support the operation of the terminal device 700. Examples of these data include: any computer program used to operate on the terminal device 700, such as the application program 7022.
- the program for implementing the method of the embodiment of the present invention may be included in the application program 7022.
- the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 701 or implemented by the processor 701.
- the processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by hardware integrated logic circuits in the processor 701 or instructions in the form of software.
- the aforementioned processor 701 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
- the processor 701 may implement or execute various methods, steps, and logical block diagrams disclosed in the embodiments of the present invention.
- the general-purpose processor may be a microprocessor or any conventional processor.
- the steps of the method disclosed in the embodiments of the present invention can be directly embodied as being executed and completed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
- the software module may be located in a storage medium, and the storage medium is located in the memory 702.
- the processor 701 reads the information in the memory 702 and completes the steps of the foregoing method in combination with its hardware.
- the terminal device 700 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, MPU, or other electronic components to implement the foregoing method.
- ASIC Application Specific Integrated Circuit
- DSP digital signal processor
- PLD programmable logic device
- CPLD complex programmable logic device
- FPGA field-programmable logic device
- controller MCU
- MPU MPU
- the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
- the computer-readable storage medium can be applied to the terminal device in the embodiment of the present application, and the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
- the computer program causes the computer to execute the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
- These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
- the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
- These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
- the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.
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Abstract
Description
Claims (84)
- 一种下行数据传输方法,所述方法包括:终端设备基于下行控制信息DCI,确定下行数据传输对应的传输配置指示TCI状态;基于所述DCI确定下行数据传输对应的冗余版本RV值;所述TCI状态和所述RV值用于所述终端设备接收下行数据。
- 根据权利要求1所述的方法,其中,所述终端设备基于DCI确定下行数据传输对应的TCI状态,包括:所述终端设备基于所述DCI中的天线端口指示信息和TCI状态指示信息,确定下行数据传输对应的TCI状态。
- 根据权利要求1或2所述的方法,其中,所述终端设备基于DCI确定下行数据传输对应的TCI状态,包括:所述终端设备基于所述DCI中的TCI状态指示信息,确定K个TCI状态,K大于1;根据DMRS端口所属的DMRS端口集合,从所述K个TCI状态中确定时域上每次下行数据传输中,每个DMRS端口对应的TCI状态,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求3所述的方法,其中,所述DMRS端口所属的DMRS端口集合,基于所述DCI中的端口指示信息所指示的DMRS端口所对应的DMRS CDM组,以及DMRS CDM组与DMRS端口集合的对应关系确定。
- 根据权利要求4所述的方法,其中,所述DMRS CDM组与DMRS端口集合的对应关系由所述终端设备预先设定,或者由网络设备通过配置信令发送至所述终端设备。
- 根据权利要求3所述的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于网络设备发送的第一指示信息确定。
- 根据权利要求6所示的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于网络设备发送的第一指示信息确定,包括:所述第一指示信息对应的值为第一值时,全部DMRS端口属于一个DMRS端口集合。
- 根据权利要求6所述的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于网络设备发送的第一指示信息确定,包括:所述第一指示信息对应的值为第二值时,基于预先设定DMRS端口与DMRS端口集合对应关系,确定所述DCI中的端口指示信息指示的DMRS端口所属的DMRS端口集合。
- 根据权利要求6所示的方法,其中,所述第一指示信息指示每个DMRS端口集合包括的DMRS端口。
- 根据权利要求6所述的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于网络设备发送的第一指示信息确定,包括:所述第一指示信息被配置时,所述终端设备基于所述DCI中的端口指示信息所指示的DMRS端口所对应的DMRS CDM组,以及DMRS CDM组与DMRS端口集合的对应关系,确定所述DMRS端口所属的DMRS端口集合。
- 根据权利要求10所述的方法,其中,所述DMRS CDM组与DMRS端口集合 的对应关系由所述终端设备预先设定,或者由网络设备通过配置信令发送至所述终端设备。
- 根据权利要求6所述的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于网络设备发送的第一指示信息确定,包括:所述第一指示信息被配置时,所述DMRS端口所属的DMRS端口集合由所述终端设备基于第一预设策略确定。
- 根据权利要求3所述的方法,其中,所述DMRS端口所属的DMRS端口集合由所述终端设备基于第一预设策略确定。
- 根据权利要求1至13任一项所述的方法,其中,所述方法还包括:所述终端设备基于网络设备发送的第二指示信息确定所述下行数据在时域上的传输次数。
- 根据权利要求14所述的方法,其中,所述第二指示信息为物理下行共享信道聚合因子PDSCH-AggregationFactor。
- 根据权利要求3至15任一项所述的方法,其中,所述从所述K个TCI状态中确定时域上每次下行数据传输中,每个DMRS端口对应的TCI状态,包括:不同DMRS端口集合所属的DMRS端口对应不同的TCI状态;在时域上每次传输下行数据时,每个所述DMRS端口对应的TCI状态恒定。
- 根据权利要求3至15任一项所述的方法,其中,所述从所述K个TCI状态中确定时域上每次下行数据传输中,每个DMRS端口对应的TCI状态,包括:基于上一次下行数据传输所对应的TCI状态,按照第二预设策略确定下行数据传输中每个DMRS端口对应的TCI状态。
- 根据权利要求17所述的方法,其中,所述第二预设策略至少包括下述中的一种:TCI状态的偏移、TCI状态的循环和TCI状态的对换。
- 根据权利要求3至15任一项所述的方法,其中,所述从所述K个TCI状态中确定时域上每次下行数据传输中,每个DMRS端口对应的TCI状态,包括:DMRS端口集合的数量为1时,按照第三预设策略确定时域上每次下行数据传输中所述DMRS端口对应的TCI状态。
- 根据权利要求19所述的方法,其中,所述第三预设策略至少包括下述中的一项:每次下行数据传输按序使用所述K个TCI状态构成的TCI序列中的一个TCI状态,当K个TCI状态使用完毕后,下行数据传输重复K个TCI状态的使用顺序;从所述K个TCI状态中选择与所述下行数据在时域上的传输次数相同数量的TCI状态,每次下行数据传输顺序使用一个TCI状态。
- 根据权利要求1至20任一项所述的方法,其中,所述基于所述DCI确定下行数据传输对应的RV,包括:基于所述DCI中的天线端口指示信息和/或RV指示信息,确定下行数据传输对应的RV值。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息中RV值与下行数据传输的次数的对应关系,确定每次下行数据传输对应的RV值;时域上每次下行数据传输中,DMRS端口对应于同一个RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息,选择DMRS端口所属的每个DMRS端口集合对应的RV值;时域上每次下行数据传输中,DMRS端口所属的DMRS端口集合对应的RV值恒定,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息选择时域上一次下行数据传输中,DMRS端口所属的每个DMRS端口集合分别对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示;基于所述一次下行数据传输中每个DMRS端口集合分别对应的RV值,按照第四预设策略确定所述一次下行数据传输后续一次或多次的下行数据传输中,所述DMRS端口所属的每个DMRS端口集合分别对应的RV值。
- 根据权利要求24所述的方法,其中,所述第四预设策略至少包括下述中的一项:RV值的取值偏移、RV值序列中的位置偏移和RV值对换。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息确定每次下行数据传输中,DMRS端口所属的每个DMRS端口集合分别对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求26所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述下行数据传输的次序与DMRS端口集合、以及RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值。
- 根据权利要求27所述的方法,其中,基于所述下行数据传输的次序与DMRS端口集合、以及RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值,包括:基于一个特定顺序的RV值序列,同一个DMRS端口集合的多次下行数据传输对应所述RV值序列中位置相邻的RV值,其中位置相邻包括循环位置相邻。
- 根据权利要求26所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述每个DMRS端口集合与M次下行数据传输中RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值,M大于或等于1。
- 根据权利要求29所述的方法,其中,所述基于所述每个DMRS端口集合与M次下行数据传输中RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值,包括:基于一个特定顺序的RV值序列,一次传输中的DMRS端口集合对应所述RV值序列中位置相邻的RV值,其中位置相邻包括循环位置相邻。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息确定一次下行数据传输中,DMRS端口所属的第一DMRS端口集合对应的RV值;基于所述第一DMRS端口集合对应的RV值,按照第五预设策略确定所述一次下行数据传输中DMRS端口所属的除所述第一DMRS端口集合以外的其他DMRS端口集合对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求31所述的方法,其中,所述第五预设策略至少包括下述中的一项:所述其他DMRS端口集合对应的RV值为,对所述第一DMRS端口集合对应的RV值以第三值顺序累加后取模得到的多个值;RV值与DMRS端口集合顺序的对应关系。
- 根据权利要求21所述的方法,其中,所述基于所述DCI中的天线端口指示信息和/或RV指示信息确定下行数据传输对应的RV值,包括:基于所述DCI中的RV指示信息,按照第六预设策略获取多个RV信息,每个RV信息用于指示下行数据传输中DMRS端口所属的一个DMRS端口集合对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求33所述的方法,其中,所述第六预设策略包括:所述多个RV指示信息的取值为,对所述DCI中的RV指示信息的取值以第四值顺序累加后取模得到的多个值。
- 根据权利要求1至34任一项所述的方法,其中,所述下行数据传输对应于多个时隙中的物理下行共享信道PDSCH,或者连续的多个PDSCH传输机会。
- 根据权利要求1至35任一项所述的方法,其中,所述下行数据传输对应于一个时隙中占用不同符号的多次传输。
- 根据权利要求1至35任一项所述的方法,其中,所述下行数据传输为同时传输的多个下行数据传输,且不同的下行数据传输对应不同的TCI状态。
- 根据权利要求1至37任一项所述的方法,其中,所述下行数据传输为多个时,所述多个下行数据传输为完全相同的信道编码后的比特数据。
- 根据权利要求1至37任一项所述的方法,其中,所述下行数据传输为多个时,所述多个下行数据传输为相同数据或相同的传输块TB经信道编码后取出的不同比特数据。
- 根据权利要求1至39任一项所述的方法,其中,所述下行数据传输为多个时,所述多个下行数据传输对应相同的混合自动重传请求HARQ进程。
- 根据权利要求1至40任一项所述的方法,其中,所述方法还包括:所述终端设备基于所述TCI状态和所述RV值接收下行数据。
- 一种终端设备,所述终端设备包括:处理单元,配置为基于下行控制信息DCI,确定下行数据传输对应的传输配置指示TCI状态;基于所述DCI确定下行数据传输对应的冗余版本RV值;所述TCI状态和所述RV值用于所述终端设备接收下行数据。
- 根据权利要求42所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的天线端口指示信息和TCI状态指示信息,确定下行数据传输对应的TCI状态。
- 根据权利要求42或43所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的TCI状态指示信息,确定K个TCI状态,K大于1;根据DMRS端口所属的DMRS端口集合,从所述K个TCI状态中确定时域上每次下行数据传输中,每个DMRS端口对应的TCI状态,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求44所述的终端设备,其中,所述DMRS端口所属的DMRS端口集合,基于所述DCI中的端口指示信息所指示的DMRS端口所对应的DMRS CDM 组,以及DMRS CDM组与DMRS端口集合的对应关系确定。
- 根据权利要求45所述的终端设备,其中,所述DMRS CDM组与DMRS端口集合的对应关系由所述终端设备预先设定,或者由网络设备通过配置信令发送至所述终端设备。
- 根据权利要求44所述的终端设备,其中,所述处理单元,配置为基于网络设备发送的第一指示信息确定所述DMRS端口所属的DMRS端口集合。
- 根据权利要求47所述的终端设备,其中,所述处理单元,配置为所述第一指示信息对应的值为第一值时,确定全部DMRS端口属于一个DMRS端口集合。
- 根据权利要求47所述的终端设备,其中,所述处理单元,配置为所述第一指示信息对应的值为第二值时,基于预先设定DMRS端口与DMRS端口集合对应关系,确定所述DCI中的端口指示信息指示的DMRS端口所属的DMRS端口集合。
- 根据权利要求47所述的终端设备,其中,所述第一指示信息指示每个DMRS端口集合包括的DMRS端口。
- 根据权利要求47所述的终端设备,其中,所述处理单元,配置为所述第一指示信息被配置时,所述终端设备基于所述DCI中的端口指示信息所指示的DMRS端口所对应的DMRS CDM组,以及DMRS CDM组与DMRS端口集合的对应关系,确定所述DMRS端口所属的DMRS端口集合。
- 根据权利要求51所述的终端设备,其中,所述DMRS CDM组与DMRS端口集合的对应关系由所述终端设备预先设定,或者由网络设备通过配置信令发送至所述终端设备。
- 根据权利要求47所述的终端设备,其中,所述处理单元,配置为所述第一指示信息被配置时,基于第一预设策略确定所述DMRS端口所属的DMRS端口集合。
- 根据权利要求44所述的终端设备,其中,所述处理单元,配置为基于第一预设策略确定所述DMRS端口所属的DMRS端口集合。
- 根据权利要求42至54任一项所述的终端设备,其中,所述处理单元,还配置为基于网络设备发送的第二指示信息确定所述下行数据在时域上的传输次数。
- 根据权利要求55所述的终端设备,其中,所述第二指示信息为物理下行共享信道聚合因子PDSCH-AggregationFactor。
- 根据权利要求44至56任一项所述的终端设备,其中,所述处理单元,配置为确定不同DMRS端口集合所属的DMRS端口对应不同的TCI状态;在时域上每次传输下行数据时,每个所述DMRS端口对应的TCI状态恒定。
- 根据权利要求44至57任一项所述的终端设备,其中,所述处理单元,配置为基于上一次下行数据传输所对应的TCI状态,按照第二预设策略确定下行数据传输中每个DMRS端口对应的TCI状态。
- 根据权利要求58所述的终端设备,其中,所述第二预设策略至少包括下述中的一种:TCI状态的偏移、TCI状态的循环和TCI状态的对换。
- 根据权利要求44至56任一项所述的终端设备,其中,所述处理单元,配置为DMRS端口集合的数量为1时,按照第三预设策略确定时域上每次下行数据传输中所述DMRS端口对应的TCI状态。
- 根据权利要求60所述的终端设备,其中,所述第三预设策略至少包括下述中的一项:每次下行数据传输按序使用所述K个TCI状态构成的TCI序列中的一个TCI状态,当K个TCI状态使用完毕后,下行数据传输重复K个TCI状态的使用顺序;从所述K个TCI状态中选择与所述下行数据在时域上的传输次数相同数量的TCI状态,每次下行数据传输顺序使用一个TCI状态。
- 根据权利要求42至61任一项所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的天线端口指示信息和/或RV指示信息,确定下行数据传输对应的RV值。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息中RV值与下行数据传输的次数的对应关系,确定每次下行数据传输对应的RV值;时域上每次下行数据传输中,DMRS端口对应于同一个RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息,选择DMRS端口所属的每个DMRS端口集合对应的RV值;时域上每次下行数据传输中,DMRS端口所属的DMRS端口集合对应的RV值恒定,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息选择时域上一次下行数据传输中,DMRS端口所属的每个DMRS端口集合分别对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示;基于所述一次下行数据传输中每个DMRS端口集合分别对应的RV值,按照第四预设策略确定所述一次下行数据传输后续一次或多次的下行数据传输中,所述DMRS端口所属的每个DMRS端口集合分别对应的RV值。
- 根据权利要求65所述的终端设备,其中,所述第四预设策略至少包括下述中的一项:RV值的取值偏移、RV值序列中的位置偏移和RV值对换。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息确定每次下行数据传输中,DMRS端口所属的每个DMRS端口集合分别对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求67所述的终端设备,其中,所述处理单元,配置为基于所述下行数据传输的次序与DMRS端口集合、以及RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值。
- 根据权利要求68所述的终端设备,其中,所述处理单元,配置为基于一个特定顺序的RV值序列,同一个DMRS端口集合的多次下行数据传输对应所述RV值序列中位置相邻的RV值,其中位置相邻包括循环位置相邻。
- 根据权利要求67所述的终端设备,其中,所述处理单元,配置为基于所述每个DMRS端口集合与M次下行数据传输中RV值的对应关系,确定每次下行数据传输中每个DMRS端口集合对应的RV值,M大于或等于1。
- 根据权利要求70所述的终端设备,其中,所述处理单元,配置为基于一个特定顺序的RV值序列,一次传输中的DMRS端口集合对应所述RV值序列中位置相邻的RV值,其中位置相邻包括循环位置相邻。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息确定一次下行数据传输中,DMRS端口所属的第一DMRS端口集合对应的RV值;基于所述第一DMRS端口集合对应的RV值,按照第五预设策略确定所述一次下行数据传输中DMRS端口所属的除所述第一DMRS端口集合以外的其他DMRS端口集合对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求72所述的终端设备,其中,所述第五预设策略至少包括下述中的一项:所述其他DMRS端口集合对应的RV值为,对所述第一DMRS端口集合对应的RV值以第三值顺序累加后取模得到的多个值;RV值与DMRS端口集合顺序的对应关系。
- 根据权利要求62所述的终端设备,其中,所述处理单元,配置为基于所述DCI中的RV指示信息,按照第六预设策略获取多个RV信息,每个RV信息用于指示下行数据传输中DMRS端口所属的一个DMRS端口集合对应的RV值,所述DMRS端口由所述DCI中的天线端口指示信息指示。
- 根据权利要求74所述的终端设备,其中,所述第六预设策略包括:所述多个RV指示信息的取值为,对所述DCI中的RV指示信息的取值以第四值顺序累加后取模得到的多个值。
- 根据权利要求42至75任一项所述的终端设备,其中,所述下行数据传输对应于多个时隙中的物理下行共享信道PDSCH,或者连续的多个PDSCH传输机会。
- 根据要求42至76任一项所述的终端设备,其中,所述下行数据传输对应于一个时隙中占用不同符号的多次传输。
- 根据要求42至77任一项所述的终端设备,其中,所述下行数据传输为同时传输的多个下行数据传输,且不同的下行数据传输对应不同的TCI状态。
- 根据要求42至78任一项所述的终端设备,其中,所述下行数据传输为多个时,所述多个下行数据传输为完全相同的信道编码后的比特数据。
- 根据要求42至78任一项所述的终端设备,其中,所述下行数据传输为多个时,所述多个下行数据传输为相同数据或相同的传输块TB经信道编码后取出的不同比特数据。
- 根据要求42至80任一项所述的终端设备,其中,所述下行数据传输为多个时,所述多个下行数据传输对应相同的混合自动重传请求HARQ进程。
- 根据要求42至81任一项所述的终端设备,其中,所述终端设备还包括:收发单元,配置为基于所述TCI状态和所述RV值接收下行数据。
- 一种终端设备,包括处理器和用于存储能够在处理器上运行的计算机程序的存储器,其中,所述处理器用于运行所述计算机程序时,执行权利要求1至41任一项所述的下行数据传输方法的步骤。
- 一种存储介质,存储有可执行程序,所述可执行程序被处理器执行时,实现权利要求1至41任一项所述的下行数据传输方法。
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