Data processing method, terminal device and network device

Abstract

The present application discloses a method for data processing, a terminal device and a network device, the method comprising: the terminal device selects a modulation coding mode MCS mapping relationship table to be used according to the transmission parameters used to transmit the first data, the MCS mapping relationship table including the mapping relationship between multiple MCS indication information and multiple MCSs; the terminal device determines the target MCS for data processing of the first data according to the target MCS indication information carried in the DCI and the MCS mapping relationship table; the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS. Therefore, the terminal device can select the MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, and effectively determine the MCS used in the current transmission scenario according to the MCS indication information carried in the DCI and the selected MCS mapping relationship table.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless communications, and more specifically, to a data processing method, a terminal device, and a network device. Background Art

[0002] In the 5G New Radio (NR) system, two new modulation methods are introduced: Binary Phase Shift Keying (BPSK) with a pi / 2 offset and 256 Quadrature Amplitude Modulation (QAM). In subsequent evolution, other higher-order modulation methods, such as 1024 QAM, will also be supported.

[0003] Among them, BPSK with a pi / 2 offset is used in scenarios with extremely low signal-to-noise ratios. In this case, the terminal can use the multiple access method based on Fourier transform spread orthogonal frequency division multiplexing (Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing, DFT-S-OFDM). 256QAM is mainly used in scenarios with very high signal-to-noise ratios. In this case, the terminal can use the multiple access method of cyclic prefix orthogonal frequency division multiplexing (Cyclic Prefix Orthogonal Frequency Division Multiplexing, CP-OFDM). Since these modulation methods have different application scenarios, how to choose the modulation coding method has become an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a data processing method, a terminal device, and a network device, which can effectively determine the modulation and coding methods used in different transmission scenarios.

[0005] In a first aspect, a method for data processing is provided, comprising: a terminal device selects a modulation and coding mode MCS mapping relationship table to be used according to a transmission parameter used for transmitting first data, the MCS mapping relationship table including a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameters include at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing method of the first data and uplink control information UCI; the terminal device determines a target MCS for processing the first data according to the target MCS indication information carried in the DCI and the MCS mapping relationship table; the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

[0006] Therefore, the terminal device can select the MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and effectively determine the MCS used in the current transmission scenario according to the MCS indication information carried in the DCI and the selected MCS mapping relationship table.

[0007] In a possible implementation, each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0008] In a possible implementation manner, each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

[0009] In one possible implementation, the transmission parameters include a transmission mode for transmitting the first data. Before the terminal device selects the MCS mapping relationship table to be used based on the transmission parameters used to transmit the first data, the method also includes: the terminal device receives indication information for indicating the transmission mode sent by the network device through high-level signaling.

[0010] In one possible implementation, the transmission parameters include a DCI format of the DCI used to schedule the first data. Before the terminal device selects the MCS mapping relationship table to be used based on the transmission parameters used to transmit the first data, the method further includes: the terminal device blindly checks the DCI based on multiple DCI formats to determine the DCI format of the DCI.

[0011] In a possible implementation, the transmission mode for transmitting the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output MIMO, a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0012] In one possible implementation, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0013] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data.

[0014] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the first modulation method.

[0015] In a possible implementation, the first transmission mode is a transmission mode based on a single antenna port, the second transmission mode is a transmission mode based on multiple antenna ports, and the first modulation mode is binary phase shift keying BPSK with a pi / 2 offset; or the first transmission mode is a transmission mode based on multiple antenna ports, the second transmission mode is a transmission mode based on a single antenna port, and the first modulation mode is a modulation mode with a modulation order higher than 64 quadrature amplitude modulation QAM; or the first transmission mode is a transmission mode based on a single transmission point, the second transmission mode is a transmission mode based on multiple transmission points, and the first modulation mode is a modulation mode with a modulation order higher than 64QAM.

[0016] In a possible implementation manner, the transmission parameter includes a DCI format of a DCI used to schedule the first data,

[0017] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the second modulation method.

[0018] In one possible implementation, the first DCI format is used to schedule single-layer data transmission on a single antenna port, the second DCI format is used to schedule single-layer or multi-layer data transmission on multiple antenna ports, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second modulation mode is a 64QAM modulation mode.

[0019] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data and a DCI format of a DCI for scheduling the first data.

[0020] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the third modulation mode.

[0021] In a possible implementation, the third transmission mode is a MIMO-based transmission mode, the third DCI format is used to schedule data transmission on multiple antenna ports, and the third modulation mode is a 256QAM modulation mode; or

[0022] The third transmission mode is a transmission mode based on a single antenna port, the third DCI format is used to schedule data transmission based on a multiple access method of DFT-S-OFDM, and the third modulation method is a BPSK modulation method with a pi / 2 offset.

[0023] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data and a DCI format of a DCI for scheduling the first data.

[0024] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fourth modulation mode; if the transmission mode is not the fourth transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the fourth modulation mode.

[0025] In one possible implementation, the fourth transmission mode is a transmission mode based on a single antenna port, the fourth DCI format is used to schedule data transmission based on a multiple access method based on DFT-S-OFDM, and the fourth modulation method is a 256QAM modulation method; or the fourth transmission mode is a transmission mode based on MIMO, the fourth DCI format is used to schedule data transmission based on a multiple access method based on CP-OFDM, and the fourth modulation method is a BPSK modulation method with a pi / 2 offset.

[0026] In a possible implementation manner, the transmission parameter includes a multiplexing manner of the first data and uplink control information UCI,

[0027] If the multiplexing method is multiplexing the first data and UCI in the same time domain resource unit, or frequency division multiplexing FDM of the first data and UCI, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fifth modulation method.

[0028] In a possible implementation, the fifth modulation mode includes any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM, or 1024 QAM.

[0029] In a possible implementation, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS indication information in the different mapping relationship tables are different.

[0030] In a possible implementation, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0031] In one possible implementation, the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS, including: if the target MCS exceeds the maximum MCS supported by the terminal device, the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

[0032] In a second aspect, a method for data processing is provided, including: a network device selects an MCS mapping relationship table of modulation and coding modes to be used according to transmission parameters used to transmit first data, the MCS mapping relationship table including mapping relationships between multiple MCS indication information and multiple MCSs, and the transmission parameters include at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing method of the first data and uplink control information UCI; the network device determines the target MCS indication information carried in the DCI according to the MCS mapping relationship table and the target MCS for processing the first data; the network device sends the DCI carrying the target MCS indication information to a terminal device; the network device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

[0033] Therefore, the network device can select an MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and determine the MCS indication information to be sent according to the target MCS for data processing of the first data and the selected MCS mapping relationship table, so that the terminal device can effectively determine the MCS used in the current transmission scenario according to the MCS indication information.

[0034] In a possible implementation, each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0035] In a possible implementation manner, each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

[0036] In a possible implementation, the transmission mode for transmitting the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output MIMO, a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0037] In one possible implementation, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0038] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data.

[0039] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the first modulation method.

[0040] In a possible implementation, the first transmission mode is a transmission mode based on a single antenna port, the second transmission mode is a transmission mode based on multiple antenna ports, and the first modulation mode is binary phase shift keying BPSK with a pi / 2 offset; or the first transmission mode is a transmission mode based on multiple antenna ports, the second transmission mode is a transmission mode based on a single antenna port, and the first modulation mode is a modulation mode with a modulation order higher than 64 quadrature amplitude modulation QAM; or the first transmission mode is a transmission mode based on a single transmission point, the second transmission mode is a transmission mode based on multiple transmission points, and the first modulation mode is a modulation mode with a modulation order higher than 64QAM.

[0041] In a possible implementation manner, the transmission parameter includes a DCI format of a DCI used to schedule the first data,

[0042] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the second modulation method.

[0043] In one possible implementation, the first DCI format is used to schedule single-layer data transmission on a single antenna port, the second DCI format is used to schedule single-layer or multi-layer data transmission on multiple antenna ports, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second modulation mode is a 64QAM modulation mode.

[0044] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data and a DCI format of a DCI for scheduling the first data.

[0045] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the third modulation mode.

[0046] In one possible implementation, the third transmission mode is a MIMO-based transmission mode, the third DCI format is used to schedule data transmission on multiple antenna ports, and the third modulation method is a 256QAM modulation method; or the third transmission mode is a single-antenna port-based transmission mode, the third DCI format is used to schedule data transmission based on a DFT-S-OFDM multiple access method, and the third modulation method is a pi / 2 offset BPSK modulation method.

[0047] In a possible implementation manner, the transmission parameter includes a transmission mode for transmitting the first data and a DCI format of a DCI for scheduling the first data.

[0048] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fourth modulation mode; if the transmission mode is not the fourth transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the fourth modulation mode.

[0049] In one possible implementation, the fourth transmission mode is a transmission mode based on a single antenna port, the fourth DCI format is used to schedule data transmission based on a multiple access method based on DFT-S-OFDM, and the fourth modulation method is a 256QAM modulation method; or the fourth transmission mode is a transmission mode based on MIMO, the fourth DCI format is used to schedule data transmission based on a multiple access method based on CP-OFDM, and the fourth modulation method is a BPSK modulation method with a pi / 2 offset.

[0050] In a possible implementation, the transmission parameters include a multiplexing method of the first data and the uplink control information UCI. If the multiplexing method is that the first data and UCI are multiplexed in the same time domain resource unit, or that the first data and UCI are frequency division multiplexed FDM, then the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fifth modulation method.

[0051] In a possible implementation, the fifth modulation mode includes any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM, or 1024 QAM.

[0052] In a possible implementation, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS in the different MCS mapping relationship tables are different.

[0053] In a possible implementation, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0054] In one possible implementation, the network device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS, including: if the target MCS exceeds the maximum MCS supported by the terminal device, the network device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

[0055] In a third aspect, a terminal device is provided, which can perform the operations of the terminal device in the first aspect or any optional implementation of the first aspect. Specifically, the terminal device may include a module unit for performing the operations of the terminal device in the first aspect or any possible implementation of the first aspect.

[0056] In a fourth aspect, a network device is provided, which can perform the operations of the network device in the second aspect or any optional implementation of the second aspect. Specifically, the network device may include a module unit for performing the operations of the network device in the second aspect or any possible implementation of the second aspect.

[0057] In a fifth aspect, a terminal device is provided, the terminal device comprising: a processor, a transceiver, and a memory. The processor, the transceiver, and the memory communicate with each other through an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the execution causes the terminal device to execute the method in the first aspect or any possible implementation of the first aspect, or the execution causes the terminal device to implement the terminal device provided by the third aspect.

[0058] In a sixth aspect, a network device is provided, the network device comprising: a processor, a transceiver and a memory. The processor, the transceiver and the memory communicate with each other through an internal connection path. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. When the processor executes the instructions stored in the memory, the execution causes the network device to execute the method in the second aspect or any possible implementation of the second aspect, or the execution causes the network device to implement the network device provided in the fourth aspect.

[0059] In a seventh aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program, wherein the program enables a terminal device to execute the data processing method of the first aspect and any one of its various implementation methods.

[0060] In an eighth aspect, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores a program, wherein the program enables a network device to execute the data processing method of the second aspect and any one of its various implementations.

[0061] In the ninth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory, wherein the processor is used to execute instructions stored in the memory. When the instructions are executed, the processor can implement the method in the aforementioned first aspect or any possible implementation of the first aspect.

[0062] In the tenth aspect, a system chip is provided, which includes an input interface, an output interface, a processor and a memory. The processor is used to execute instructions stored in the memory. When the instructions are executed, the processor can implement the method in the aforementioned second aspect or any possible implementation of the second aspect.

[0063] In an eleventh aspect, a computer program product comprising instructions is provided, and when the computer program product is run on a computer, the computer is caused to execute the method in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0064] In a twelfth aspect, a computer program product comprising instructions is provided. When the computer program product is run on a computer, the computer is caused to execute the method in the above-mentioned second aspect or any possible implementation manner of the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0065] Figure 1 It is a schematic architecture diagram of an application scenario of an embodiment of the present application.

[0066] Figure 2 It is a schematic flow chart of the data processing method of an embodiment of the present application.

[0067] Figure 3 It is a schematic flow chart of the data processing method of an embodiment of the present application.

[0068] Figure 4 It is a schematic block diagram of a terminal device according to an embodiment of the present application.

[0069] Figure 5 It is a schematic block diagram of a network device according to an embodiment of the present application.

[0070] Figure 6 It is a schematic structural diagram of the system chip of an embodiment of the present application.

[0071] Figure 7 It is a schematic structural diagram of a communication device according to an embodiment of the present application. DETAILED DESCRIPTION

[0072] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0073] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile Communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), and future 5G communication systems, etc.

[0074] The present application describes various embodiments in conjunction with terminal devices. Terminal devices may also refer to user equipment (UE), access terminals, user units, user stations, mobile stations, mobile stations, remote stations, remote terminals, mobile devices, user terminals, terminals, wireless communication devices, user agents, or user devices. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolving land public mobile communication network (PLMN) network, etc.

[0075] The present application describes various embodiments in conjunction with a network device. The network device may be a device for communicating with a terminal device, for example, a base station (Base Transceiver Station, BTS) in a GSM system or CDMA, a base station (NodeB, NB) in a WCDMA system, or an evolved base station (EvolutionalNode B, eNB or eNodeB) in an LTE system, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, a network side device in a future 5G network, or a network side device in a future evolved PLMN network, etc.

[0076] Figure 1 It is a schematic diagram of an application scenario of an embodiment of the present application. Figure 1 The communication system in the embodiment may include a network device 10 and a terminal device 20. The network device 10 is used to provide communication services for the terminal device 20 and access the core network. The terminal device 20 can access the network by searching for synchronization signals, broadcast signals, etc. sent by the network device 10, thereby communicating with the network. Figure 1 The arrows shown in may represent uplink / downlink transmissions performed via a cellular link between the terminal device 20 and the network device 10 .

[0077] The network in the embodiment of the present application may refer to a public land mobile network (PLMN) or a device to device (D2D) network or a machine to machine / man (M2M) network or other networks. Figure 1 This is just a simplified diagram for example. The network may also include other terminal devices. Figure 1 Not drawn in.

[0078] Figure 2 It is a schematic flow chart of the data processing method of an embodiment of the present application. Figure 2 The method shown can be executed by a terminal device, which can be, for example, Figure 1 The terminal device 20 shown in FIG. Figure 2 As shown, the data processing method includes:

[0079] In 210, the terminal device selects an MCS mapping table to be used according to the transmission parameters used to transmit the first data.

[0080] The MCS mapping relationship table includes mapping relationships between multiple modulation coding mode (MCS) indication information and multiple MCSs.

[0081] Among them, the transmission parameters include at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing method of the first data and uplink control information (Uplink Control Information, UCI).

[0082] Specifically, the terminal device can select an MCS mapping relationship table for data processing of the first data from multiple MCS mapping relationship tables according to the transmission parameters used to transmit the first data. When the transmission parameters used to transmit the first data are different, the MCS mapping relationship table selected by the terminal device may also be different. The MCS mapping relationship table includes mapping relationships between multiple MCS indication information and multiple MCSs, and the multiple MCS indication information corresponds one-to-one to the multiple MCSs. The terminal device can determine the target MCS for data processing of the first data according to the MCS indication information carried in the DCI that schedules the first data, and the MCS mapping relationship table, and encode and modulate, or demodulate and decode, the first data based on the target MCS.

[0083] Optionally, each MCS indication information in the multiple MCS indication information in the MCS mapping relationship table indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0084] Optionally, each MCS among the multiple MCSs includes information about a modulation mode and a coding rate.

[0085] For example, the MCS mapping relationship table shown in Table 1 includes 32 MCS indexes, and these 32 MCS indexes correspond to 32 debugging coding modes, each of which includes a code rate and a modulation mode such as a Quadrature Phase Shift Keying (QPSK) modulation mode or a 64QAM modulation mode.

[0086] Table 1

[0087]

[0088] Optionally, the transmission parameters include a transmission mode for transmitting the first data. Before 210, that is, before the terminal device selects the MCS mapping relationship table to be used according to the transmission parameters used to transmit the first data, the method also includes: the terminal device receives indication information sent by the network device through high-level signaling to indicate the transmission mode.

[0089] Optionally, the transmission parameters include a DCI format of the DCI used to schedule the first data. Before 210, that is, before the terminal device selects the MCS mapping relationship table to be used according to the transmission parameters used to transmit the first data, the method also includes: the terminal device performs a blind check on the DCI that schedules the first data based on multiple DCI formats to determine the DCI format of the DCI that schedules the first data.

[0090] The multiple DCI formats that the terminal device needs to blindly detect and the number of the multiple DCI formats may depend on the currently configured transmission mode for transmitting the first data, for example.

[0091] Optionally, the transmission mode used to transmit the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output (MIMO), a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0092] The transmission point may be, for example, a transmission reception point (TRP) or an antenna panel (Panel). For a transmission mode based on a single transmission point, the terminal device only needs a single physical downlink control channel (PDCCH) to obtain the DCI carried on a single PDCCH; for a transmission mode based on multiple transmission points, the terminal device needs to detect multiple PDCCHs.

[0093] Optionally, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission based on a multiple access method of DFT-S-OFDM, data transmission based on a multiple access method of CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0094] For example, the DCI format used to schedule any of the above data transmissions may be independent of the transmission mode, and the DCI format is a DCI format having the attribute of scheduling any of the above data transmissions.

[0095] The open-loop MIMO may be, for example, transmit diversity, precoding round-robin or open-loop spatial multiplexing. The transmission point may be, for example, a TRP or a Panel.

[0096] Among them, if the DCI format of the DCI is used to schedule data transmission on a single transmission point, the terminal device only needs to detect a single PDCCH; if the DCI format of the DCI is used to schedule data transmission on multiple transmission points, the terminal device needs to detect multiple PDCCHs.

[0097] When the transmission parameters for transmitting the first data include a subcarrier spacing for transmitting the first data, the subcarrier spacing may be, for example, a subcarrier spacing that may be used in a new radio (NR), such as 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, or 920kHz.

[0098] For example, if the subcarrier spacing is less than 60kHz, the MCS mapping relationship table includes the modulation mode of 256QAM; if the subcarrier spacing is greater than 60kHz, the MCS mapping relationship table does not include the modulation mode of 256QAM.

[0099] In 210, when the transmission parameters used to transmit the first data are different, the MCS mapping relationship table to be used selected by the terminal device may also be different. The following five situations specifically describe the MCS mapping relationship table selected based on different transmission parameters.

[0100] Case 1

[0101] Optionally, the transmission parameter includes a transmission mode for transmitting the first data.

[0102] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the first modulation method.

[0103] The first modulation mode includes, for example, any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0104] Optionally, the first transmission mode is a transmission mode based on a single antenna port, the second transmission mode is a transmission mode based on multiple antenna ports, and the first modulation method is binary phase shift keying BPSK with a pi / 2 offset; or the first transmission mode is a transmission mode based on multiple antenna ports, the second transmission mode is a transmission mode based on a single antenna port, and the first modulation method is a modulation method with a modulation order higher than 64QAM; or the first transmission mode is a transmission mode based on a single transmission point, the second transmission mode is a transmission mode based on multiple transmission points, and the first modulation method is a modulation method with a modulation order higher than 64QAM.

[0105] For example, if the transmission mode used to transmit the first data is a transmission mode based on a single antenna port, then when the terminal device selects the MCS mapping relationship table, the MCS mapping relationship table should satisfy: including the modulation method of BPSK with a pi / 2 offset and not including the modulation method with a modulation order higher than 64QAM (for example, 256QAM and 1024QAM). In this case, the MCS mapping relationship table may be, for example, the MCS mapping relationship table shown in Table 2; if the transmission mode used to transmit the first data is a transmission mode based on multiple antenna ports, then when the terminal device selects the MCS mapping relationship table, the MCS mapping relationship table should satisfy: not including the BPSK with a pi / 2 offset and including the modulation method of 256QAM. In this case, the MCS mapping relationship table may be, for example, the MCS mapping relationship table shown in Table 3.

[0106] For another example, if the transmission mode used to transmit the first data is a transmission mode based on a single transmission point, the MCS mapping relationship table selected by the terminal device includes modulation methods with modulation orders higher than 64QAM (for example, 256 QAM and 1024 QAM); if the transmission mode used to transmit the first data is a transmission mode based on multiple transmission points, the MCS mapping relationship table selected by the terminal device does not include modulation methods with modulation orders higher than 64QAM (for example, 256QAM and 1024QAM).

[0107] Case 2

[0108] Optionally, the transmission parameter includes a DCI format of the DCI used to schedule the first data.

[0109] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the second modulation method.

[0110] The second modulation method includes, for example, any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0111] Optionally, the first DCI format is used to schedule single-layer data transmission on a single antenna port, the second DCI format is used to schedule single-layer or multi-layer data transmission on multiple antenna ports, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or

[0112] The first DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, the second DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or

[0113] The first DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, the second DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second modulation mode is a 64QAM modulation mode.

[0114] For example, if the DCI format (Format) of the DCI used to schedule the first data is DCI format 0, and the DCI format 0 is used to schedule single-layer data transmission on a single antenna port, the MCS mapping relationship table selected by the terminal device includes the modulation mode of BPSK with a pi / 2 offset and does not include a modulation mode with a modulation order higher than 64 QAM (for example, 256 QAM, 1024 QAM). In this case, the MCS mapping relationship table may be, for example, the MCS mapping relationship table shown in Table 2; if the DCI format of the DCI used to schedule the first data is DCI format 1, and the DCI format 1 is used to schedule data transmission on multiple antenna ports (which may be single-layer data transmission or multi-layer data transmission), the MCS mapping relationship table selected by the terminal device includes the modulation mode of 256 QAM. In this case, the MCS mapping relationship table may be, for example, the MCS mapping relationship table shown in Table 3.

[0115] Table 2

[0116]

[0117]

[0118] Table 3

[0119]

[0120] For another example, if the DCI format of the DCI used to schedule the first data is DCI format 0, and the DCI format 0 is used to schedule data transmission based on the DFT-S-OFDM multiple access method, then the MCS mapping relationship table selected by the terminal device includes the modulation mode of BPSK with a pi / 2 offset and does not include the modulation mode of 256QAM; if the DCI format of the DCI used to schedule the first data is DCI format 1, and the DCI format 1 is used to schedule data transmission based on the CP-OFDM multiple access method, then the MCS mapping relationship table selected by the terminal device does not include the modulation mode of BPSK with a pi / 2 offset and includes the modulation mode of 256QAM. The MCS mapping relationship table corresponding to DCI format 0 may be, for example, as shown in Table 2, and the MCS mapping relationship table corresponding to DCI format 1 may be, for example, as shown in Table 3.

[0121] Case 3

[0122] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of the DCI for scheduling the first data.

[0123] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the third modulation mode.

[0124] The third modulation mode includes, for example, any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0125] Optionally, the third transmission mode is a MIMO-based transmission mode, the third DCI format is used to schedule data transmission on multiple antenna ports, and the third modulation method is a 256QAM modulation method; or the third transmission mode is a single-antenna port-based transmission mode, the third DCI format is used to schedule data transmission based on a DFT-S-OFDM-based multiple access method, and the third modulation method is a pi / 2 offset BPSK modulation method.

[0126] For example, if the transmission mode used to transmit the first data is a MIMO-based transmission mode, and the DCI format of the DCI used to schedule the first data is DCI format 1, and the DCI format 1 is used to schedule data transmission based on multiple antenna ports, then the MCS mapping relationship table selected by the terminal device includes a 256 QAM modulation mode; in other cases (for example, other transmission modes are used to transmit the first data, or other DCI formats are used to schedule the first data under the same transmission mode), the MCS mapping relationship table does not include a 256 QAM modulation mode.

[0127] For another example, if the transmission mode used to transmit the first data is a transmission mode based on a single antenna port, and the DCI format of the DCI used to schedule the first data is DCI format 0, and the DCI format 0 is used to schedule data transmission based on the DFT-S-OFDM multiple access method, then the MCS mapping relationship table selected by the terminal device includes a BPSK modulation mode with a pi / 2 offset; in other cases (for example, using other transmission modes to transmit the first data, or using other DCI formats to schedule the first data under the same transmission mode), the MCS mapping relationship table does not include a BPSK modulation mode with a pi / 2 offset.

[0128] Case 4

[0129] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of the DCI for scheduling the first data.

[0130] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fourth modulation mode; if the transmission mode is not the first transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the fourth modulation mode.

[0131] The fourth modulation method includes, for example, any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0132] Optionally, the fourth transmission mode is a transmission mode based on a single antenna port, the fourth DCI format is used to schedule data transmission based on a multiple access method of DFT-S-OFDM, and the fourth modulation method is a 256 QAM modulation method; or the fourth transmission mode is a transmission mode based on MIMO, the fourth DCI format is used to schedule data transmission based on a multiple access method of CP-OFDM, and the fourth modulation method is a BPSK modulation method with a pi / 2 offset.

[0133] For example, if the transmission mode used to transmit the first data is a transmission mode based on a single antenna port, and the DCI format of the DCI used to schedule the first data is DCI format 0, and the DCI format 0 is used to schedule data transmission based on the DFT-S-OFDM multiple access method, then the MCS mapping relationship table selected by the terminal device does not include the 256QAM modulation mode; in other cases (for example, other transmission modes are used to transmit the first data, or other DCI formats are used to schedule the first data under the same transmission mode), the MCS mapping relationship table includes the 256QAM modulation mode.

[0134] For another example, if the transmission mode used to transmit the first data is a MIMO-based transmission mode, and the DCI format of the DCI used to schedule the first data is DCI format 1, and the DCI format 1 is used to schedule data transmission based on the CP-OFDM multiple access method, then the MCS mapping relationship table selected by the terminal device does not include the BPSK modulation method with a pi / 2 offset; in other cases (for example, using other transmission modes to transmit the first data, or using other DCI formats to schedule the first data under the same transmission mode), the MCS mapping relationship table includes the BPSK modulation method with a pi / 2 offset.

[0135] Case 5

[0136] Optionally, the transmission parameter includes a multiplexing method of the first data and uplink control information (Uplink Control Information, UCI).

[0137] If the multiplexing mode is that the first data and UCI are multiplexed in the same time domain resource unit, or that the first data and UCI are frequency division multiplexed (Frequency Division Multiplexing, FDM), then the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fifth modulation mode.

[0138] The time domain resource unit is, for example, a time slot, a mini time slot or a subframe.

[0139] The fifth modulation method includes, for example, any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0140] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS indication information in the different mapping relationship tables are different.

[0141] In other words, the code rates in different MCS mapping tables determined by the terminal device according to different transmission parameters may be different.

[0142] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0143] In other words, the sizes of different MCS mapping relationship tables determined by the terminal device according to different transmission parameters are different, that is, the number of MCSs or the number of MCS indication information included in different MCS mapping relationship tables is different.

[0144] At this time, the number of bits occupied by the MCS indication information carried in the DCI for scheduling the first data may also be different.

[0145] For example, for the first transmission mode and / or the first DCI format, the MCS mapping relationship table selected by the terminal device includes the mapping relationship between the 16 possible MCS indexes indicated by the MCS indication information and the 16 MCSs that may be used for the first data, and there is a one-to-one correspondence between these 16 MCS indexes and the 16 MCSs. At this time, the size of the MCS mapping relationship table is 16. The MCS indication information in the MCS mapping relationship table can occupy 4 bits. For the second transmission mode and / or the second DCI format, the MCS mapping relationship table includes the mapping relationship between the 32 possible MCS indexes indicated by the MCS indication information and the 32 MCSs that may be used to transmit the first data, and there is a one-to-one correspondence between these 32 MCS indexes and the 32 MCSs. At this time, the size of the MCS mapping relationship table is 32, and the MCS indication information in the MCS mapping relationship table can occupy 5 bits.

[0146] In 220, the terminal device determines the target MCS for processing the first data based on the target MCS indication information carried in the DCI and the MCS mapping relationship table.

[0147] In 230, the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

[0148] Specifically, the terminal device performs channel coding on the first data according to the coding rate in the MCS, and then modulates the coded first data according to the modulation mode in the MCS to obtain a modulated signal. Alternatively, the terminal device demodulates the received first data according to the modulation mode in the MCS, and then decodes the demodulated first data according to the code rate in the MCS to obtain decoded first data.

[0149] Optionally, the terminal device encodes and modulates the first data according to the target MCS, or demodulates and decodes the first data, including: if the target MCS exceeds the maximum MCS supported by the terminal device, the terminal device encodes and modulates the first data according to the maximum MCS, or demodulates and decodes the first data.

[0150] For example, if the terminal device only supports the modulation mode of 64QAM at most, but the modulation mode corresponding to the MCS indication information carried in the DCI is the modulation mode of 256QAM, the terminal device uses 64QAM as the MCS used to process the first data. Alternatively, if the code rate corresponding to the MCS indication information exceeds the maximum code rate supported by the terminal device, the terminal device sends or detects the first data according to the maximum code rate supported by it.

[0151] Therefore, in an embodiment of the present application, the terminal device can select a MCSMCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and effectively determine the MCS used in the current transmission scenario according to the MCS indication information carried in the DCI and the selected MCSMCS mapping relationship table.

[0152] Figure 3 It is a schematic flow chart of the data processing method of an embodiment of the present application. Figure 3 The method shown may be performed by a network device, which may be, for example, Figure 1 The network device 10 shown in FIG. Figure 3 As shown, the data processing method includes:

[0153] In 310, the network device selects an MCS mapping relationship table to be used according to the transmission parameters used to transmit the first data, wherein the MCS mapping relationship table includes mapping relationships between multiple MCS indication information and multiple MCSs, and the transmission parameters include at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing method of the first data and uplink control information UCI.

[0154] In 320, the network device determines the target MCS indication information carried in the DCI according to the MCS mapping relationship table and the target MCS for processing the first data.

[0155] In 330, the network device sends the DCI carrying the target MCS indication information to the terminal device.

[0156] In 340, the network device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

[0157] Therefore, the network device can select an MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and determine the MCS indication information to be sent according to the target MCS for data processing of the first data and the selected MCS mapping relationship table, so that the terminal device can effectively determine the MCS used in the current transmission scenario according to the MCS indication information.

[0158] Optionally, each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0159] Optionally, each MCS among the multiple MCSs includes information about a modulation mode and a coding rate.

[0160] Optionally, the transmission mode for transmitting the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output MIMO, a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0161] Optionally, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0162] Optionally, the transmission parameter includes a transmission mode for transmitting the first data.

[0163] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the first modulation method.

[0164] Optionally, the first transmission mode is a transmission mode based on a single antenna port, the second transmission mode is a transmission mode based on multiple antenna ports, and the first modulation mode is binary phase shift keying BPSK with a pi / 2 offset; or the first transmission mode is a transmission mode based on multiple antenna ports, the second transmission mode is a transmission mode based on a single antenna port, and the first modulation mode is a modulation mode with a modulation order higher than 64 quadrature amplitude modulation QAM; or the first transmission mode is a transmission mode based on a single transmission point, the second transmission mode is a transmission mode based on multiple transmission points, and the first modulation mode is a modulation mode with a modulation order higher than 64QAM.

[0165] Optionally, the transmission parameter includes a DCI format of a DCI used to schedule the first data,

[0166] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the second modulation method.

[0167] Optionally, the first DCI format is used to schedule single-layer data transmission on a single antenna port, the second DCI format is used to schedule single-layer or multi-layer data transmission on multiple antenna ports, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or the first DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second modulation mode is a 64QAM modulation mode.

[0168] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0169] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the third modulation mode.

[0170] Optionally, the third transmission mode is a MIMO-based transmission mode, the third DCI format is used to schedule data transmission on multiple antenna ports, and the third modulation method is a 256QAM modulation method; or the third transmission mode is a single-antenna port-based transmission mode, the third DCI format is used to schedule data transmission based on a DFT-S-OFDM multiple access method, and the third modulation method is a pi / 2 offset BPSK modulation method.

[0171] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0172] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fourth modulation mode; if the transmission mode is not the fourth transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the fourth modulation mode.

[0173] Optionally, the fourth transmission mode is a transmission mode based on a single antenna port, the fourth DCI format is used to schedule data transmission based on a multiple access method of DFT-S-OFDM, and the fourth modulation method is a 256QAM modulation method; or the fourth transmission mode is a transmission mode based on MIMO, the fourth DCI format is used to schedule data transmission based on a multiple access method of CP-OFDM, and the fourth modulation method is a BPSK modulation method with a pi / 2 offset.

[0174] Optionally, the transmission parameters include a multiplexing method of the first data and uplink control information UCI. If the multiplexing method is that the first data and UCI are multiplexed in the same time domain resource unit, or that the first data and UCI are frequency division multiplexed (FDM), then the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fifth modulation method.

[0175] Optionally, the fifth modulation mode includes any one of the following: pi / 2 offset BPSK, 64 QAM, 256QAM or 1024 QAM.

[0176] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS in the different MCS mapping relationship tables are different.

[0177] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0178] Optionally, the network device encodes and modulates the first data according to the target MCS, or demodulates and decodes the first data, including: if the target MCS exceeds the maximum MCS supported by the terminal device, the network device encodes and modulates the first data according to the maximum MCS, or demodulates and decodes the first data.

[0179] It should be understood that the specific process of the network device selecting the MCS mapping relationship table and the specific description of the MCS mapping relationship table can refer to the aforementioned Figure 2 For the sake of brevity, the relevant description of the terminal device is not repeated here.

[0180] It should also be understood that the descriptions of method 200 and method 300 may refer to each other, and method 200 and method 300 may be used in combination, which will not be described in detail here for the sake of brevity.

[0181] It should also be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0182] Figure 4 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. Figure 4 As shown, the terminal device 400 includes a selection unit 410, a determination unit 420 and a data processing unit 430. Among them:

[0183] A selection unit 410 is configured to select a modulation and coding scheme MCS mapping relationship table to be used according to a transmission parameter used to transmit the first data, wherein the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameter includes at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing mode of the first data and uplink control information UCI;

[0184] A determining unit 420, configured to determine a target MCS for performing data processing on the first data according to the target MCS indication information carried in the DCI and the MCS mapping relationship table selected by the selecting unit 410;

[0185] The data processing unit 430 is used to encode and modulate the first data, or demodulate and decode the first data according to the target MCS determined by the determination unit 420.

[0186] Therefore, the terminal device can select the MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and effectively determine the MCS used in the current transmission scenario according to the MCS indication information carried in the DCI and the selected MCS mapping relationship table.

[0187] Optionally, each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0188] Optionally, each MCS among the multiple MCSs includes information about a modulation mode and a coding rate.

[0189] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and the terminal device further includes a transceiver unit, and the transceiver unit is used to receive indication information for indicating the transmission mode sent by a network device through high-layer signaling.

[0190] Optionally, the transmission parameters include a DCI format of the DCI used to schedule the first data, and the determination unit 420 is further used to: perform blind detection on the DCI based on multiple DCI formats to determine the DCI format of the DCI.

[0191] Optionally, the transmission mode for transmitting the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output MIMO, a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0192] Optionally, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0193] Optionally, the transmission parameter includes a transmission mode for transmitting the first data.

[0194] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the first modulation method.

[0195] Optionally, the first transmission mode is a transmission mode based on a single antenna port, the second transmission mode is a transmission mode based on multiple antenna ports, and the first modulation mode is binary phase shift keying BPSK with a pi / 2 offset; or

[0196] The first transmission mode is a transmission mode based on multiple antenna ports, the second transmission mode is a transmission mode based on a single antenna port, and the first modulation mode is a modulation mode with a modulation order higher than 64 quadrature amplitude modulation QAM; or

[0197] The first transmission mode is a transmission mode based on a single transmission point, the second transmission mode is a transmission mode based on multiple transmission points, and the first modulation method is a modulation method with a modulation order higher than 64QAM.

[0198] Optionally, the transmission parameter includes a DCI format of a DCI used to schedule the first data,

[0199] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the second modulation method.

[0200] Optionally, the first DCI format is used to schedule single-layer data transmission on a single antenna port, the second DCI format is used to schedule single-layer or multi-layer data transmission on multiple antenna ports, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or

[0201] The first DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, the second DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the second modulation mode is a BPSK modulation mode with a pi / 2 offset; or

[0202] The first DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, the second DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the second modulation mode is a 64QAM modulation mode.

[0203] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0204] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the third modulation mode.

[0205] Optionally, the third transmission mode is a MIMO-based transmission mode, the third DCI format is used to schedule data transmission on multiple antenna ports, and the third modulation mode is a 256QAM modulation mode; or

[0206] The third transmission mode is a transmission mode based on a single antenna port, the third DCI format is used to schedule data transmission based on a multiple access method of DFT-S-OFDM, and the third modulation method is a BPSK modulation method with a pi / 2 offset.

[0207] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0208] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fourth modulation mode; if the transmission mode is not the fourth transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the terminal device include the fourth modulation mode.

[0209] Optionally, the fourth transmission mode is a transmission mode based on a single antenna port, the fourth DCI format is used to schedule data transmission in a multiple access mode based on DFT-S-OFDM, and the fourth modulation mode is a modulation mode of 256QAM; or

[0210] The fourth transmission mode is a MIMO-based transmission mode, the fourth DCI format is used to schedule data transmission in a multiple access mode based on CP-OFDM, and the fourth modulation mode is a BPSK modulation mode with a pi / 2 offset.

[0211] Optionally, the transmission parameters include a multiplexing method of the first data and uplink control information UCI. If the multiplexing method is that the first data and UCI are multiplexed in the same time domain resource unit, or that the first data and UCI are frequency division multiplexed (FDM), then the multiple MCSs in the MCS mapping relationship table selected by the terminal device do not include the fifth modulation method.

[0212] Optionally, the fifth modulation mode includes any one of the following: BPSK with a pi / 2 offset, 64 QAM, 256 QAM or 1024 QAM.

[0213] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS indication information in the different mapping relationship tables are different.

[0214] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0215] Optionally, the data processing unit 430 is specifically used to: if the target MCS exceeds the maximum MCS supported by the terminal device, the terminal device encodes and modulates the first data according to the maximum MCS, or demodulates and decodes the first data.

[0216] It should be understood that the terminal device 400 can execute the corresponding operations performed by the terminal device in the above method embodiment, and for the sake of brevity, they are not repeated here.

[0217] Figure 5 is a schematic block diagram of a network device 500 according to an embodiment of the present application. Figure 5 As shown, the network device 500 includes a selection unit 510, a determination unit 520, a transceiver unit 530 and a data processing unit 540. Among them:

[0218] A selection unit 510 is configured to select a modulation and coding scheme MCS mapping relationship table to be used according to a transmission parameter used to transmit the first data, wherein the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameter includes at least one of the following: a transmission mode for transmitting the first data, a DCI format of downlink control information DCI for scheduling the first data, a subcarrier spacing for transmitting the first data, and a multiplexing mode of the first data and uplink control information UCI;

[0219] a determining unit 520, configured to determine the target MCS indication information carried in the DCI according to the MCS mapping relationship table selected by the selecting unit 510 and the target MCS for performing data processing on the first data;

[0220] The transceiver unit 530 is configured to send the DCI carrying the target MCS indication information determined by the determination unit 520 to the terminal device;

[0221] The data processing unit 540 is used to encode and modulate the first data, or demodulate and decode the first data according to the target MCS determined by the determination unit 520.

[0222] Therefore, the network device can select an MCS mapping relationship table suitable for the current transmission scenario according to the transmission parameters of the data transmission, such as the transmission mode, DCI format, subcarrier spacing, multiplexing method with UCI, etc., and determine the MCS indication information to be sent according to the target MCS for data processing of the first data and the selected MCS mapping relationship table, so that the terminal device can effectively determine the MCS used in the current transmission scenario according to the MCS indication information.

[0223] Optionally, each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

[0224] Optionally, each MCS among the multiple MCSs includes information about a modulation mode and a coding rate.

[0225] Optionally, the transmission mode for transmitting the first data includes any one of the following: a transmission mode based on a single antenna port, a transmission mode based on multiple-input multiple-output MIMO, a transmission mode based on multiple antenna ports, a transmission mode based on a single transmission point, or a transmission mode based on multiple transmission points.

[0226] Optionally, the DCI format of the DCI used to schedule the first data includes a DCI format for scheduling any of the following data transmissions: data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

[0227] Optionally, the transmission parameter includes a transmission mode for transmitting the first data.

[0228] If the transmission mode is the first transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device include the first modulation method; if the transmission mode is the second transmission mode, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the first modulation method.

[0229] Optionally, the transmission parameter includes a DCI format of a DCI used to schedule the first data,

[0230] If the DCI format of the DCI is the first DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the second modulation method; if the DCI format of the DCI is the second DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the second modulation method.

[0231] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0232] If the transmission mode is the third transmission mode and the DCI format of the DCI is the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the third modulation mode; if the transmission mode is not the third transmission mode, and / or the DCI format of the DCI is not the third DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the third modulation mode.

[0233] Optionally, the transmission parameters include a transmission mode for transmitting the first data, and a DCI format of a DCI for scheduling the first data,

[0234] If the transmission mode is the fourth transmission mode and the DCI format of the DCI is the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fourth modulation mode; if the transmission mode is not the fourth transmission mode, and / or the DCI format of the DCI is not the fourth DCI format, the multiple MCSs in the MCS mapping relationship table selected by the network device include the fourth modulation mode.

[0235] Optionally, the transmission parameters include a multiplexing method of the first data and uplink control information UCI. If the multiplexing method is that the first data and UCI are multiplexed in the same time domain resource unit, or that the first data and UCI are frequency division multiplexed (FDM), then the multiple MCSs in the MCS mapping relationship table selected by the network device do not include the fifth modulation method.

[0236] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS in the different MCS mapping relationship tables are different.

[0237] Optionally, the terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

[0238] Optionally, the data processing unit 540 is specifically used for: if the target MCS exceeds the maximum MCS supported by the terminal device, the network device encodes and modulates the first data according to the maximum MCS, or demodulates and decodes the first data.

[0239] It should be understood that the network device 500 can execute the corresponding operations performed by the network device in the above method embodiment, and for the sake of brevity, they are not repeated here.

[0240] Figure 6It is a schematic structural diagram of the system chip 600 according to an embodiment of the present application. Figure 6 The system chip 600 includes an input interface 601 , an output interface 602 , and the processor 603 and the memory 604 can be connected via an internal communication connection line. The processor 603 is used to execute the code in the memory 604 .

[0241] Optionally, when the code is executed, the processor 603 may implement the method 200 executed by the terminal device in the above method embodiment. For the sake of brevity, it will not be described in detail here.

[0242] Optionally, when the code is executed, the processor 603 may implement the method 300 executed by the network device in the above method embodiment. For the sake of brevity, it will not be described in detail here.

[0243] Figure 7 is a schematic structural diagram of a communication device 700 according to an embodiment of the present application. Figure 7 As shown, the communication device includes a processor 710, a transceiver 720 and a memory 730, wherein the processor 710, the transceiver 720 and the memory 730 communicate with each other through an internal connection path. The memory 730 is used to store instructions, and the processor 710 is used to execute the instructions stored in the memory 730 to control the transceiver 720 to receive or send signals.

[0244] Optionally, the processor 710 may call program codes stored in the memory 730 to execute corresponding operations of the terminal device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0245] Optionally, the processor 710 may call program codes stored in the memory 730 to execute corresponding operations of the network device in the method embodiment, which will not be described in detail here for the sake of brevity.

[0246] It should be understood that the processor of the embodiment of the present application may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method embodiment can be completed by the hardware integrated logic circuit or software instructions in the processor. The above processor can be a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor. The steps of the method disclosed in the embodiment of the present application can be directly embodied as a hardware decoding processor to perform, or the hardware and software modules in the decoding processor are combined and performed. The software module can be located in a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, and other mature storage media in the art. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0247] It can be understood that the memory in the embodiments of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct RAM bus random access memory (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0248] Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0249] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0250] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, 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.

[0251] 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.

[0252] In addition, 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.

[0253] If 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. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0254] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for data processing, characterized in that: The method comprises: The terminal device selects a modulation coding mode MCS mapping relationship table to be used according to the transmission parameters used to transmit the first data, where the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameters include a multiplexing mode of the first data and uplink control information UCI. If the multiplexing mode is that the first data and the UCI are multiplexed in the same time domain resource unit, or that the first data and the UCI are frequency division multiplexed FDM, the selected MCS mapping relationship table does not include a 256QAM modulation mode; The terminal device determines a target MCS for processing the first data according to the target MCS indication information carried in the downlink control information DCI for scheduling the first data and the MCS mapping relationship table; The terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

2. The method according to claim 1, characterized in that Each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

3. The method according to claim 1 or 2, characterized in that: Each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

4. The method according to claim 1 or 2, characterized in that: The DCI format of the DCI used to schedule the first data includes a DCI format used to schedule data transmission of any of the following: Data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

5. The method according to claim 3, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS indication information in the different mapping relationship tables are different.

6. The method according to claim 3, characterized in that The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

7. The method according to claim 1 or 2, characterized in that: The terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS, including: If the target MCS exceeds the maximum MCS supported by the terminal device, the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

8. A method of data processing, characterized in that: The method comprises: The network device selects a modulation coding mode MCS mapping relationship table to be used according to a transmission parameter used to transmit the first data, wherein the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameter includes a multiplexing mode of the first data and uplink control information UCI. If the multiplexing mode is that the first data and the UCI are multiplexed in the same time domain resource unit, or that the first data and the UCI are frequency division multiplexed FDM, the selected MCS mapping relationship table does not include a 256QAM modulation mode; The network device determines, according to the MCS mapping relationship table and the target MCS for processing the first data, target MCS indication information carried in downlink control information DCI for scheduling the first data; The network device sends the DCI carrying the target MCS indication information to the terminal device; The network device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS.

9. The method according to claim 8, characterized in that Each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

10. The method according to claim 8 or 9, characterized in that: Each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

11. The method according to claim 8 or 9, characterized in that: The DCI format of the DCI used to schedule the first data includes a DCI format used to schedule data transmission of any of the following: Data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

12. The method according to claim 8 or 9, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS in the different MCS mapping relationship tables are different.

13. The method according to claim 8 or 9, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

14. The method according to claim 8 or 9, characterized in that: The network device encodes and modulates the first data, or demodulates and decodes the first data according to the target MCS, including: If the target MCS exceeds the maximum MCS supported by the terminal device, the network device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

15. A terminal device, characterized in that: The terminal device comprises: A selection unit, configured to select a modulation coding scheme MCS mapping relationship table to be used according to a transmission parameter used to transmit the first data, wherein the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameter includes a multiplexing mode of the first data and uplink control information UCI. If the multiplexing mode is that the first data and the UCI are multiplexed in the same time domain resource unit, or that the first data and the UCI are frequency division multiplexed FDM, then the selected MCS mapping relationship table does not include a 256QAM modulation mode; a determining unit, configured to determine a target MCS for processing the first data according to the target MCS indication information carried in the downlink control information DCI for scheduling the first data and the MCS mapping relationship table selected by the selecting unit; A data processing unit is used to encode and modulate the first data, or demodulate and decode the first data according to the target MCS determined by the determination unit.

16. The terminal device according to claim 15, characterized in that: Each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

17. The terminal device according to claim 15 or 16, characterized in that: Each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

18. The terminal device according to claim 15 or 16, characterized in that: The DCI format of the DCI used to schedule the first data includes a DCI format used to schedule data transmission of any of the following: Data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

19. The terminal device according to claim 17, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS indication information in the different mapping relationship tables are different.

20. The terminal device according to claim 17, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

21. The terminal device according to claim 15 or 16, characterized in that: The data processing unit is specifically used for: If the target MCS exceeds the maximum MCS supported by the terminal device, the terminal device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

22. A network device, characterized in that: The network equipment includes: A selection unit, configured to select a modulation coding scheme MCS mapping relationship table to be used according to a transmission parameter used to transmit the first data, wherein the MCS mapping relationship table includes a mapping relationship between multiple MCS indication information and multiple MCSs, and the transmission parameter includes a multiplexing mode of the first data and uplink control information UCI. If the multiplexing mode is that the first data and the UCI are multiplexed in the same time domain resource unit, or that the first data and the UCI are frequency division multiplexed FDM, then the selected MCS mapping relationship table does not include a 256QAM modulation mode; a determining unit, configured to determine, according to the MCS mapping relationship table selected by the selecting unit and a target MCS for performing data processing on the first data, target MCS indication information carried in downlink control information DCI for scheduling the first data; A transceiver unit, configured to send the DCI carrying the target MCS indication information determined by the determination unit to a terminal device; A data processing unit is used to encode and modulate the first data, or demodulate and decode the first data according to the target MCS determined by the determination unit.

23. The network device according to claim 22, characterized in that: Each MCS indication information in the multiple MCS indication information indicates an MCS index, and the multiple MCS indexes indicated by the multiple MCS indication information correspond one-to-one to the multiple MCSs.

24. The network device according to claim 22 or 23, characterized in that: Each MCS in the multiple MCSs includes information about a modulation mode and a coding rate.

25. The network device according to claim 22 or 23, characterized in that: The DCI format of the DCI used to schedule the first data includes a DCI format used to schedule data transmission of any of the following: Data transmission on a single antenna port, data transmission on a single transmission layer, data transmission on multiple antenna ports, data transmission on multiple transmission layers, data transmission based on open-loop MIMO, data transmission based on closed-loop precoding, data transmission using a multiple access method based on Fourier transform spread orthogonal frequency division multiplexing DFT-S-OFDM, data transmission using a multiple access method based on cyclic prefix orthogonal frequency division multiplexing CP-OFDM, data transmission on a single transmission point, or data transmission on multiple transmission points.

26. The network device according to claim 22 or 23, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the encoding bit rates corresponding to the target MCS in the different MCS mapping relationship tables are different.

27. The network device according to claim 22 or 23, characterized in that: The terminal device selects different MCS mapping relationship tables according to different transmission parameters, and the different MCS mapping relationship tables include different amounts of MCS indication information.

28. The network device according to claim 22 or 23, characterized in that: The data processing unit is specifically used for: If the target MCS exceeds the maximum MCS supported by the terminal device, the network device encodes and modulates the first data, or demodulates and decodes the first data according to the maximum MCS.

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