MCS mapping information determination method and apparatus, and device and storage medium

Abstract

The present application relates to the field of communications. Disclosed are an MCS mapping information determination method and apparatus, and a device and a storage medium. The method comprises: determining MCS information of a channel on the basis of transmission parameter information and an MCS mapping relationship, which comprises a first mapping relationship and / or a second mapping relationship, wherein the first mapping relationship comprises MCS information corresponding to a situation where the transmission parameter information indicates that there is one transmission layer of a channel, the second mapping relationship comprises MCS information corresponding to a situation where the transmission parameter information indicates that there are two or more transmission layers of the channel, and the first mapping relationship is different from the second mapping relationship. MCS information determined for channels having different numbers of transmission layers is more accurate and more suitable, thereby effectively improving the demodulation performance and communication efficiency of the channels.

Description

Method, device, equipment and storage medium for determining MCS mapping information Technical Field

[0001] The present application relates to the field of communications, and in particular to a method, apparatus, device, and storage medium for determining MCS mapping information. Background Art

[0002] During channel transmission, a modulation and coding scheme (MCS) needs to be determined for the channel. Usually, the corresponding modulation order and target code rate are determined by the MCS index in the MCS mapping table.

[0003] However, the methods for determining the modulation order and target code rate in related technologies are less flexible and may have a negative impact on the transmission performance of the channel.

[0004] Summary of the Invention

[0005] The embodiments of the present application provide a method, apparatus, device, and storage medium for determining MCS mapping information. The technical solution is as follows:

[0006] According to one aspect of the present application, a method for determining MCS mapping information is provided, the method being performed by a terminal device, the method comprising:

[0007] Determine the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship;

[0008] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0009] According to one aspect of the present application, a method for determining MCS mapping information is provided, the method being performed by a network device, the method comprising:

[0010] Sending transmission parameter information, where the transmission parameter information and the MCS mapping relationship are used to determine the MCS information of the channel;

[0011] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0012] According to one aspect of the present application, a device for determining MCS mapping information is provided, the device including:

[0013] A determination module, configured to determine MCS information of a channel based on transmission parameter information and an MCS mapping relationship;

[0014] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0015] According to one aspect of the present application, a device for determining MCS mapping information is provided, the device including:

[0016] A second sending module is used to send transmission parameter information, where the mapping relationship between the transmission parameter information and the MCS is used to determine the MCS information of the channel;

[0017] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0018] According to one aspect of the present application, a terminal device is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining MCS mapping information as described in the above aspect.

[0019] According to one aspect of the present application, a network device is provided, comprising: a processor; a transceiver connected to the processor; and a memory for storing executable instructions of the processor; wherein the processor is configured to load and execute the executable instructions to implement the method for determining MCS mapping information as described in the above aspect.

[0020] According to one aspect of the present application, a computer-readable storage medium is provided, in which executable instructions are stored. The executable instructions are loaded and executed by a processor to implement the method for determining MCS mapping information as described in the above aspect.

[0021] According to one aspect of the present application, a computer program product is provided, comprising computer instructions, wherein the computer instructions are stored in a computer-readable storage medium, a processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes to implement the method for determining MCS mapping information as described in the above aspect.

[0022] According to one aspect of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method for determining MCS mapping information as described in the above aspect.

[0023] According to one aspect of the present application, a computer program is provided, which includes computer instructions. A processor of a computer device executes the computer instructions, so that the computer device executes the method for determining MCS mapping information as described in the above aspect.

[0024] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0025] Based on the channel's transmission parameter information, different MCS mapping tables are determined for channels with different numbers of transmission layers. Compared to related technologies that use the same MCS mapping table design regardless of the number of transmission layers, this method makes the MCS mapping table determined for channels with two or more transmission layers more accurate and appropriate, thereby improving channel demodulation performance, enhancing channel coverage and transmission quality, and increasing the communication efficiency of the communication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0027] FIG1 shows a schematic diagram of a mobile communication system provided by some exemplary embodiments of the present application;

[0028] FIG2 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0029] FIG3 is a schematic diagram showing a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0030] FIG4 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0031] FIG5 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0032] FIG6 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0033] FIG7 is a schematic diagram showing a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0034] FIG8 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0035] FIG9 is a schematic flow chart showing a method for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0036] FIG10 shows a structural block diagram of a device for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0037] FIG11 shows a structural block diagram of a device for determining MCS mapping information provided by some exemplary embodiments of the present application;

[0038] FIG12 shows a schematic structural diagram of a communication device provided by some exemplary embodiments of the present application. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the accompanying drawings. Exemplary embodiments will be described in detail herein, with examples shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0040] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," "the," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0041] It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining."

[0042] First, the technology related to this application is introduced.

[0043] 1. Determine the MCS mapping table

[0044] In related technologies, if the Physical Uplink Shared Channel (PUSCH) uses a Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) waveform for transmission, the MCS mapping table is determined as follows:

[0045] If the parameter mcs-TableTransformPrecoderDCI-0-2 in the Radio Resource Control (RRC) signaling pusch-Config is configured to "qam256", the downlink control information (DCI) format of the Physical Downlink Control Channel (PDCCH) scheduling the PUSCH is DCI format0_2, and the cyclic redundancy check (CRC) of the DCI is scrambled by the Cell Radio Network Temporary Identifier (C-RNTI) or the Semi-Persistent Channel State Information (SP-CSI-RNTI), the UE uses the MCS index in Table 5.1.3.1-2 in Section 5.1.3.1 of 3rd Generation Partnership Project (3GPP) TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0046] If the UE is not configured with MCS-C-RNTI, and the parameter mcs-TableTransformPrecoderDCI-0-2 in pusch-Config is configured to "qam64LowSE", and the DCI format of the PDCCH scheduling the PUSCH is DCI format 0_2, and the CRC of the DCI is scrambled by the C-RNTI or SP-CSI-RNTI, then the UE uses the MCS index in Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0047] If the parameter mcs-TableTransformPrecoder in pusch-Config is configured to "qam256", and the DCI format of the PDCCH scheduling the PUSCH is DCI format 0_1, and the CRC of the DCI is scrambled by the C-RNTI or SP-CSI-RNTI, the UE uses the MCS index in Table 5.1.3.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0048] If the UE is not configured with MCS-C-RNTI, and the parameter mcs-TableTransformPrecoder in pusch-Config is configured to "qam64LowSE", and the DCI format of the PDCCH scheduling the PUSCH is a DCI format other than DCI format 0_2 in the UE-specific search space, and the CRC of the DCI is scrambled by the C-RNTI or SP-CSI-RNTI, then the UE uses the MCS index in Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0049] If the UE is configured with MCS-C-RNTI and the CRC of the PDCCH scheduling the PUSCH is scrambled by MCS-C-RNTI, the UE uses the MCS index in Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0050] If the parameter mcs-TableTransformPrecoder in the RRC signaling configuredGrantConfig is configured to "qam256", and the CRC of the PDCCH scheduling the PUSCH is scrambled by the CS-RNTI, or the PUSCH is transmitted with a configured grant, the UE uses the MCS index in Table 5.1.3.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0051] If the parameter mcs-TableTransformPrecoder in the RRC signaling configuredGrantConfig is configured to "qam64LowSE", and the CRC of the PDCCH scheduling the PUSCH is scrambled by the CS-RNTI, or the PUSCH is scheduled for transmission, the UE uses the MCS index in Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and target code rate R of the PUSCH.

[0052] If MsgA-PUSCH transmission is performed, the UE uses the MCS index indicated by the higher-layer parameter msgA-MCS and Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the target code rate for the MsgA-PUSCH. When Table 6.1.4.1-2 is used, q = 2.

[0053] If the PUSCH transmission being performed is not MsgA-PUSCH transmission, the UE uses the MCS index in Table 6.1.4.1-1 in Section 5.1.3.1 of 3GPP TS 38.214 to determine the modulation order Qm and code rate R for the PUSCH transmission.

[0054] 2. DFT-s-OFDM waveform and Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) waveform

[0055] The application scenarios of the DFT-s-OFDM waveform are different from those of the CP-OFDM waveform.

[0056] In related technologies, to ensure single-carrier performance, control channel-scheduled PUSCH transmissions in the DFT-s-OFDM waveform are limited to single-layer PUSCH transmissions. However, the CP-OFDM waveform supports multi-layer PUSCH transmissions, which can improve system capacity.

[0057] Considering that multi-layer uplink transmission can improve uplink coverage and throughput, multi-layer uplink transmission can be introduced under the DFT-s-OFDM waveform to improve the uplink transmission performance under the DFT-s-OFDM waveform.

[0058] As described above, in Table 5.1.3.1-2 and Table 6.1.4.1-2 in Section 5.1.3.1 of 3GPP TS 38.214, when the waveform is DFT-s-OFDM, the two MCS mapping tables with a maximum modulation order of 64QAM correspond to high spectrum efficiency and low spectrum efficiency, respectively.

[0059] However, under the DFT-s-OFDM waveform, when the number of PUSCH transmission layers is greater than or equal to 2, using the above-mentioned MCS mapping table will reduce the demodulation performance of the PUSCH, which is not conducive to enhancing uplink coverage.

[0060] Based on the above problems, the present application provides a method for determining MCS mapping information, which supports determining a suitable MCS mapping table for PUSCH transmission with a transmission layer number greater than or equal to 2 under a DFT-s-OFDM waveform.

[0061] Figure 1 shows a schematic diagram of a mobile communication system provided by an exemplary embodiment of the present application. The mobile communication system includes a network device 110 and a terminal device 120, and may or may not include a terminal device 130, which is not limited in the present application.

[0062] The network device 110 in the present application provides wireless communication functions, and the network device 110 includes but is not limited to: Evolved Node B (eNB), Radio Network Controller (RNC), Node B (NB), Base Station Controller (BSC), Base Transceiver Station (BTS), Home Base Station (e.g., Home Evolved Node B, or Home Node B, HNB), Baseband Unit (BBU), Access Point (AP) in Wireless Fidelity (Wi-Fi) system, Wireless Relay Node, Wireless Backhaul Node, Transmission Point (TP) or Transmission and Reception Point (TRP), etc., and can also be the Next Generation Node B (NGNB) in the 5th Generation (5G) mobile communication system. The term "gNB" refers to a base station (B, gNB) or a transmission point (TRP or TP), or one or a group of antenna panels (including multiple antenna panels) of a base station in a 5G system, or a network node constituting a gNB or a transmission point, such as a baseband unit (BBU) or a distributed unit (DU), or a base station in a Beyond Fifth Generation (B5G) or a 6th Generation (6G) mobile communication system, or a core network (CN), fronthaul, backhaul, radio access network (RAN), network slicing, or a serving cell, primary cell (PCell), primary secondary cell (PSCell), special cell (SpCell), secondary cell (SCell), or neighboring cell of a terminal device.

[0063] The terminal device 120 in this application is also called user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, and user device. The terminals include, but are not limited to, handheld devices, wearable devices, vehicle-mounted devices, and Internet of Things devices, such as mobile phones, tablet computers, e-book readers, laptop computers, desktop computers, televisions, game consoles, mobile Internet devices (MIDs), augmented reality (AR) terminals, virtual reality (VR) terminals, mixed reality (MR) terminals, extended reality (XR) terminals, baffle reality (BR) terminals, cinematic reality (CR) terminals, deceived reality (DR) terminals, wearable devices, handles, electronic tags, controllers, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical care, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and remote surgery. Medical Surgery), wireless terminals, cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, Wireless Local Loop (WLL) stations, Personal Digital Assistants (PDAs), TV Set Top Boxes (STBs), Customer Premise Equipment (CPEs), etc.

[0064] The network device 110 and the terminal device 120 communicate with each other via some air interface technology, such as a Uu interface.

[0065] For example, there are two communication scenarios between network device 110 and terminal device 120: uplink communication scenario and downlink communication scenario. Uplink communication, or uplink transmission, refers to sending signals or data to network device 110; downlink communication, or downlink transmission, refers to sending signals or data to terminal device 120.

[0066] The terminal device 120 and the terminal device 130 communicate with each other via some air interface technology, such as a Uu interface.

[0067] In some embodiments, there are two communication scenarios between terminal device 120 and terminal device 130: a first sideline communication scenario and a second sideline communication scenario. The first sideline communication refers to sending signals to terminal device 130, while the second sideline communication refers to sending signals to terminal device 120.

[0068] Terminal device 120 and terminal device 130 are both within the network coverage and located in the same cell, or terminal device 120 and terminal device 130 are both within the network coverage but located in different cells, or terminal device 120 is within the network coverage but terminal device 130 is outside the network coverage.

[0069] The technical solutions provided in 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, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, 5G mobile communication system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-based access to unlicensed spectrum) system. Unlicensed spectrum, NR-U) system, terrestrial communication network (Terrestrial Networks, TN) system, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, wireless local area network (Wireless Local Area Networks, WLAN), Wi-Fi system, cellular Internet of Things system, cellular passive Internet of Things system, can also be applied to subsequent evolution systems of 5G NR system, and can also be applied to B5G, 6G and subsequent evolution systems. In some embodiments of the present application, "NR" may also be referred to as 5G NR system or 5G system. Among them, the 5G mobile communication system may include non-standalone networking (NSA) and / or standalone networking (SA).

[0070] The technical solutions provided in the embodiments of the present application can also be applied to machine type communication (MTC), long term evolution technology for machine-to-machine communication (LTE-M), device-to-device (D2D) network, machine-to-machine (M2M) network, Internet of Things (IoT) network or other networks. Among them, the IoT network can include, for example, the Internet of Vehicles. Among them, the communication mode in the Internet of Vehicles system is collectively referred to as vehicle to other devices (Vehicle to X, V2X, X can represent anything), for example, the V2X can include: vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian communication (V2P) or vehicle to network (V2N) communication, etc.

[0071] The mobile communication system provided in the embodiment of the present application can be applied to but not limited to at least one of the following communication scenarios: an uplink communication scenario, a downlink communication scenario, and a sidelink communication scenario.

[0072] FIG2 is a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application. The method is illustrated by taking the terminal device shown in FIG1 as an example. The method includes at least some of the following steps:

[0073] Step 210: Determine the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship.

[0074] The transmission parameter information is the transmission parameter information of the channel, which is used to indicate the transmission parameters of the channel. The transmission parameters include one or more parameters such as the number of transmission layers, coding parameters, and modulation parameters.

[0075] The MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship. The first mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is 1, and the second mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is greater than or equal to 2. The first mapping relationship is different from the second mapping relationship.

[0076] In some embodiments, the MCS mapping relationship is agreed upon by a communication protocol or configured by a network device.

[0077] In some embodiments, before executing step 210, the terminal device receives transmission parameter information from the network device. Optionally, the number of transmission layers of the channel is explicitly indicated by the transmission parameter information, or the number of transmission layers of the channel is implicitly indicated by the transmission parameter information. Optionally, the specific method of implicit indication can be agreed upon by the communication protocol, configured by the network device, or determined by negotiation between the network device and the terminal device.

[0078] In some embodiments, the first mapping relationship includes at least two mapping relationships.

[0079] In some embodiments, the second mapping relationship includes at least two mapping relationships; or, the second mapping relationship includes at least four mapping relationships.

[0080] In some embodiments, the MCS mapping relationship includes one or more of the following information: an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the mapping relationship between the MCS index and the target code rate, the mapping relationship between the MCS index and the modulation order, and the mapping relationship between the MCS index and the frequency efficiency are stored in the form of an MCS mapping table.

[0081] MCS information refers to the MCS information used by the channel during transmission, including one or more of the modulation order, target code rate, frequency efficiency, and other information.

[0082] It should be understood that in this application, transmission can be understood as sending, receiving, or both sending and receiving.

[0083] In summary, the method provided in the embodiments of the present application determines corresponding MCS information for channels with different numbers of transmission layers based on the channel's transmission parameters and the MCS mapping relationship. Compared to related technologies that use the same MCS mapping table design regardless of the number of transmission layers of the channel, the method provided in the embodiments of the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the channel's demodulation performance, improving the channel's coverage and transmission quality, and improving the communication efficiency of the communication system.

[0084] Based on the embodiment shown in FIG2 , step 210 can also be implemented as step 310. FIG3 shows a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is schematically illustrated using the terminal device shown in FIG1 as an example. The method includes at least some of the following steps:

[0085] Step 310: Determine the MCS information of the channel based on the transmission parameter information and the MCS mapping indication information.

[0086] The transmission parameter information is the transmission parameter information of the channel, which is used to indicate the transmission parameters of the channel. The transmission parameters include one or more parameters such as the number of transmission layers, coding parameters, and modulation parameters.

[0087] In some embodiments, before executing step 310, the terminal device receives transmission parameter information from the network device. Optionally, the number of transmission layers of the channel is explicitly indicated by the transmission parameter information, or the number of transmission layers of the channel is implicitly indicated by the transmission parameter information. Optionally, the specific method of implicit indication can be agreed upon by the communication protocol, configured by the network device, or determined by negotiation between the network device and the terminal device.

[0088] The MCS mapping indication information is used to indicate the MCS mapping relationship.

[0089] In some embodiments, before executing step 310, the terminal device receives MCS mapping indication information from the network device.

[0090] In some embodiments, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship. The first mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is 1, and the second mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is greater than or equal to 2. The first mapping relationship is different from the second mapping relationship.

[0091] In some embodiments, the MCS mapping relationship is agreed upon by a communication protocol or configured by a network device.

[0092] In some embodiments, the MCS mapping relationship includes one or more of the following information: an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the mapping relationship between the MCS index and the target code rate, the mapping relationship between the MCS index and the modulation order, and the mapping relationship between the MCS index and the frequency efficiency are stored in the form of an MCS mapping table.

[0093] In some embodiments, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship; the second mapping relationship includes a third MCS mapping relationship and / or a fourth MCS mapping relationship;

[0094] Among them, the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

[0095] In some embodiments, the MCS mapping indication information includes first indication information. In some embodiments, the first indication information is used to indicate that transform precoding is enabled. In some embodiments, the first indication information is used to indicate that the transmission of the channel adopts a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the CP-OFDM waveform is switched to a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a manner that enables precoding. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a precoding manner, wherein the MCS mapping relationship includes a mapping relationship associated with the transmission of the channel in a precoding manner.

[0096] In some embodiments, determining the MCS information of the channel based on the transmission parameter information and the MCS mapping indication information can be implemented as determining the MCS information of the channel based on the transmission parameter information and the first indication information.

[0097] In some embodiments, before executing step 310, the terminal device receives first indication information from the network device. Optionally, the first indication information is carried by one or more of RRC signaling, a media access control control element (MAC CE), or DCI. Optionally, the first indication information is set in the information 3-transmission precoding parameter msg3-transformPrecoder, or in the information A-transmission precoding parameter msgA-TransformPrecoder, or in the transmission precoding parameter transformPrecoder in the physical uplink shared channel-configuration parameter pusch-Config, or in the transmission precoding parameter transformPrecoder in the configuration grant configuration parameter configuredGrantConfig.

[0098] In some embodiments, when the number of transmission layers of a channel is equal to 1, the relevant determination method described in "1. Determine the MCS mapping table" above can be adopted.

[0099] In some embodiments, the MCS mapping indication information further includes second indication information or third indication information. Therefore, step 310 can also be implemented as step 312 or step 314.

[0100] Step 312: When the number of transmission layers of the channel is greater than or equal to 2, determine the MCS information of the channel in the third MCS mapping relationship based on the transmission parameter information, the first indication information and the second indication information.

[0101] In some embodiments, step 312 can also be implemented as: when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information and second indication information, determining the MCS information of the channel based on the third MCS mapping relationship.

[0102] The second indication information is used to indicate a first quadrature amplitude modulation mode. Optionally, the first quadrature amplitude modulation mode includes one or more of a quadrature amplitude modulation 64 (QAM64) mode, a non-quadrature amplitude modulation 256 (QAM256) mode, and a non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0103] In some embodiments, the second indication information is used to indicate quadrature amplitude modulation 64 (QAM64), or is not used to indicate quadrature amplitude modulation 256 (QAM256) or non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE).

[0104] In some embodiments, the second indication information includes parameters configured as QAM64, or does not include parameters configured as QAM256, or does not include parameters configured as QAM64LowSE.

[0105] In some embodiments, in the third MCS mapping relationship, when the MCS index is 17, the target code rate is 438.

[0106] In some embodiments, the second indication information is carried in RRC signaling, or the second indication information is carried in MAC CE.

[0107] The second indication information is sent by the network device.

[0108] In some embodiments, before executing step 312, the terminal device receives second indication information from the network device.

[0109] Step 314: When the number of transmission layers of the channel is greater than or equal to 2, determine the MCS information of the channel in the fourth MCS mapping relationship based on the transmission parameter information, the first indication information, and the third indication information.

[0110] In some embodiments, step 314 can also be implemented as: when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the third indication information, determining the MCS information of the channel based on the fourth MCS mapping relationship.

[0111] The third indication information is used to indicate a second quadrature amplitude modulation mode. Optionally, the second quadrature amplitude modulation mode includes: a quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0112] In some embodiments, the third indication information is used to indicate Quadrature Amplitude Modulation 64 Low Spectral Efficiency (QAM64LowSE).

[0113] In some embodiments, the third indication information includes parameters configured as QAM64LowSE.

[0114] In some embodiments, in the fourth MCS mapping relationship, when the MCS index is 21, the target code rate is 438; and / or, when the MCS index is 22, the target code rate is 466; and / or, when the MCS index is 23, the target code rate is 517.

[0115] In some embodiments, the third indication information is carried in RRC signaling, or the third indication information is carried in MAC CE.

[0116] The third indication information is sent by the network device.

[0117] In some embodiments, before executing step 314, the terminal device receives third indication information from the network device.

[0118] In summary, the method provided in the embodiment of the present application supports determining different MCS information for channels with different numbers of transmission layers based on the number of transmission layers of the channel and whether it is transmitted through precoding. Compared with the related art, which uses the same MCS mapping table design regardless of the number of transmission layers of the channel, the method provided in the embodiment of the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system. In addition, it supports further matching the MCS mapping relationship used to determine the MCS information for the channel based on the second indication information or the third indication information, so that the accuracy and suitability of the determination of the MCS mapping information are further improved. The method provided in the embodiment of the present application provides a method for determining MCS mapping information with two granularities, has high flexibility and robustness, and can meet the MCS mapping table determination requirements in various communication scenarios.

[0119] Based on the embodiment shown in FIG3 , step 310 can also be implemented as step 410. FIG4 shows a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is schematically illustrated using the terminal device shown in FIG1 as an example. The method includes at least some of the following steps:

[0120] Step 410: Determine MCS information of the channel based on the first indication information, the fourth indication information and the transmission parameter information.

[0121] The transmission parameter information is the transmission parameter information of the channel, which is used to indicate the transmission parameters of the channel. The transmission parameters include one or more parameters such as the number of transmission layers, coding parameters, and modulation parameters.

[0122] In some embodiments, before executing step 410, the terminal device receives transmission parameter information from the network device. Optionally, the number of transmission layers of the channel is explicitly indicated by the transmission parameter information, or the number of transmission layers of the channel is implicitly indicated by the transmission parameter information. Optionally, the specific method of implicit indication can be agreed upon by the communication protocol, configured by the network device, or determined by negotiation between the network device and the terminal device.

[0123] The MCS mapping indication information is used to indicate the MCS mapping relationship.

[0124] In some embodiments, before executing step 410, the terminal device receives MCS mapping indication information from the network device.

[0125] In some embodiments, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship. The first mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is 1, and the second mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is greater than or equal to 2. The first mapping relationship is different from the second mapping relationship.

[0126] In some embodiments, the MCS mapping relationship is agreed upon by a communication protocol or configured by a network device.

[0127] In some embodiments, the MCS mapping relationship includes one or more of the following information: an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the mapping relationship between the MCS index and the target code rate, the mapping relationship between the MCS index and the modulation order, and the mapping relationship between the MCS index and the frequency efficiency are stored in the form of an MCS mapping table.

[0128] In some embodiments, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship; the second mapping relationship includes one or more of the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, and the fourth MCS mapping relationship;

[0129] Among them, the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

[0130] In some embodiments, the MCS mapping indication information includes first indication information and fourth indication information.

[0131] In some embodiments, the first indication information is used to indicate that transform precoding is enabled. In some embodiments, the first indication information is used to indicate that the transmission of the channel adopts a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the CP-OFDM waveform is switched to a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a manner that enables precoding. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a precoding manner, wherein the MCS mapping relationship includes a mapping relationship associated with the transmission of the channel in a precoding manner.

[0132] In some embodiments, the value of the fourth indication information is used to indicate the MCS mapping relationship.

[0133] In some embodiments, determining the MCS information of the channel based on the transmission parameter information and the MCS mapping indication information can be implemented as determining the MCS information of the channel based on the transmission parameter information, the first indication information and the fourth indication information.

[0134] In some embodiments, before executing step 410, the terminal device receives first indication information from the network device. Optionally, the first indication information is carried by one or more of RRC signaling, MAC CE, or DCI. Optionally, the first indication information is set in the parameter msg3-transformPrecoder, or the parameter msgA-TransformPrecoder, or the transformPrecoder in the parameter pusch-Config, or the transformPrecoder in the parameter configuredGrantConfig.

[0135] In some embodiments, when the number of transmission layers of a channel is equal to 1, the relevant determination method described in "1. Determine the MCS mapping table" above can be adopted.

[0136] In some embodiments, the MCS mapping indication information further includes second indication information or third indication information. Therefore, step 410 can also be implemented as step 412 or step 414.

[0137] Step 412: When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, second indication information and fourth indication information, determine the MCS information of the channel based on the first MCS mapping relationship or the third MCS mapping relationship.

[0138] In some embodiments, step 412 can also be implemented as: when the number of transmission layers of the channel is greater than or equal to 2, based on the transmission parameter information, the first indication information, the second indication information and the fourth indication information, the MCS information of the channel is determined in the first MCS mapping relationship or the third MCS mapping relationship.

[0139] The second indication information is used to indicate a first quadrature amplitude modulation mode. Optionally, the first quadrature amplitude modulation mode includes one or more of a quadrature amplitude modulation 64 (QAM64) mode, a non-quadrature amplitude modulation 256 (QAM256) mode, and a non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0140] In some embodiments, the second indication information is used to indicate quadrature amplitude modulation 64 (QAM64), or is not used to indicate quadrature amplitude modulation 256 (QAM256) or non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE).

[0141] In some embodiments, the second indication information includes parameters configured as QAM64, or does not include parameters configured as QAM256, or does not include parameters configured as QAM64LowSE.

[0142] In some embodiments, in the first MCS mapping relationship, when the MCS index is 16, the target code rate is 658, and / or, when the MCS index is 17, the target code rate is 466.

[0143] In some embodiments, in the third MCS mapping relationship, when the MCS index is 17, the target code rate is 438.

[0144] In some embodiments, the second indication information is carried in RRC signaling, or the second indication information is carried in MAC CE.

[0145] The second indication information is sent by the network device.

[0146] In some embodiments, before executing step 412, the terminal device receives second indication information from the network device.

[0147] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, second indication information and fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the first MCS mapping relationship.

[0148] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, second indication information and fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the third MCS mapping relationship.

[0149] Exemplarily, the first value is 0 or other numerical values, and the second value is 1 or other numerical values; or, the first value is 1 or other numerical values, and the second value is 0 or other numerical values.

[0150] Step 414: When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, third indication information and fourth indication information, determine the MCS information of the channel based on the second MCS mapping relationship or the fourth MCS mapping relationship.

[0151] In some embodiments, step 414 can also be implemented as: when the number of transmission layers of the channel is greater than or equal to 2, based on the transmission parameter information, the first indication information, the third indication information and the fourth indication information, the MCS information of the channel is determined in the second MCS mapping relationship or the fourth MCS mapping relationship.

[0152] The third indication information is used to indicate a second quadrature amplitude modulation mode. Optionally, the second quadrature amplitude modulation mode includes: a quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0153] In some embodiments, the third indication information is used to indicate Quadrature Amplitude Modulation 64 Low Spectral Efficiency (QAM64LowSE).

[0154] In some embodiments, the third indication information includes parameters configured as QAM64LowSE.

[0155] In some embodiments, in the second MCS mapping relationship, when the MCS index is 21, the target code rate is 658; and / or, when the MCS index is 22, the target code rate is 699; and / or, when the MCS index is 23, the target code rate is 772.

[0156] In some embodiments, in the fourth MCS mapping relationship, when the MCS index is 21, the target code rate is 438; and / or, when the MCS index is 22, the target code rate is 466; and / or, when the MCS index is 23, the target code rate is 517.

[0157] In some embodiments, the third indication information is carried in RRC signaling, or the third indication information is carried in MAC CE.

[0158] The third indication information is sent by the network device.

[0159] In some embodiments, before executing step 414, the terminal device receives third indication information from the network device.

[0160] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, third indication information and fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the second MCS mapping relationship.

[0161] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes first indication information, third indication information and fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the fourth MCS mapping relationship.

[0162] Exemplarily, the first value is 0 or other numerical values, and the second value is 1 or other numerical values; or, the first value is 1 or other numerical values, and the second value is 0 or other numerical values.

[0163] In summary, the method provided in the embodiment of the present application supports determining different MCS information for channels with different numbers of transmission layers based on the number of transmission layers of the channel, the fourth indication information, and whether it is transmitted through precoding. Compared with the related art, which uses the same MCS mapping table design regardless of the number of transmission layers of the channel, the method provided in the embodiment of the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system. In addition, it supports further matching the MCS mapping relationship used to determine the MCS information for the channel based on the second indication information or the third indication information, so that the accuracy and suitability of the determination of the MCS mapping information are further improved. The method provided in the embodiment of the present application provides a method for determining MCS mapping information with three granularities, has high flexibility and robustness, and can meet the MCS mapping table determination requirements in various communication scenarios.

[0164] Based on the embodiment shown in FIG2 , step 210 can be implemented as steps 510 and 530. FIG5 shows a flow chart of a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is illustrated by taking the terminal device shown in FIG1 as an example. The method includes at least some of the following steps:

[0165] Step 510: Determine the MCS index corresponding to the channel based on the MCS index indication information;

[0166] The MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

[0167] In some embodiments, based on the MCS index indication information, the target row, target column, or target element corresponding to the channel in the MCS mapping relationship is determined, where an element can be understood as an entry or a cell.

[0168] In some embodiments, the MCS index indication information is carried in the DCI.

[0169] Step 530: Determine the MCS information corresponding to the channel based on the transmission parameter information, the MCS mapping relationship, and the MCS index.

[0170] The MCS information includes one or more of the modulation order, target code rate, and frequency efficiency.

[0171] In some embodiments, the channel comprises a PUSCH.

[0172] In some embodiments, the channel includes at least two PUSCHs, the at least two PUSCHs including a first PUSCH and a second PUSCH;

[0173] The first PUSCH includes at least one PUSCH associated with first spatial information, the second PUSCH includes at least one PUSCH associated with second spatial information, and the first spatial information is different from the second spatial information.

[0174] In some embodiments, the transmission scheme of the channel includes Space Division Multiplexing (SDM) or Single Frequency Network (SFN).

[0175] In some embodiments, the MCS mapping relationship corresponding to the first PUSCH is the same as or different from the MCS mapping relationship corresponding to the second PUSCH.

[0176] In some embodiments, the MCS mapping relationship corresponding to the first PUSCH and the MCS mapping relationship corresponding to the second PUSCH are set uniformly or separately.

[0177] In some embodiments, the MCS index corresponding to the first PUSCH is the same as or different from the MCS index corresponding to the second PUSCH.

[0178] In some embodiments, the MCS index corresponding to the first PUSCH and the MCS index corresponding to the second PUSCH are set uniformly or separately.

[0179] In some embodiments, the MCS index indication information includes first MCS index indication information and second MCS index indication information. The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the second MCS index indication information. It can also be understood that the first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the second MCS index indication information is used to determine the MCS index corresponding to the second PUSCH.

[0180] In some embodiments, the MCS index indication information includes first MCS index indication information. The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the first MCS index indication information and the first offset value. It can also be understood that the first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the first MCS index indication information and the first offset value are used to determine the MCS index corresponding to the second PUSCH.

[0181] In some embodiments, the value of the MCS index corresponding to the second PUSCH is the sum of the value of the MCS index corresponding to the first PUSCH and the first offset value.

[0182] It should be understood that the embodiment shown in FIG5 can be used alone or in combination with the embodiment shown in FIG3 or FIG4. For example, FIG5 can be used in combination with FIG3. After the MCS mapping relationship of the channel is determined by the method shown in FIG3, the MCS index corresponding to the channel is determined by the method shown in FIG5. For example, FIG5 can be used in combination with FIG4. After the MCS mapping relationship of the channel is determined by the method shown in FIG4, the MCS index corresponding to the channel is determined by the method shown in FIG5.

[0183] In summary, the method provided in the embodiment of the present application determines different MCS mapping relationships for channels with different numbers of transmission layers based on the transmission parameter information of the channel. Compared with the related art, which uses the same MCS mapping table design regardless of the number of transmission layers of the channel, the method provided in the embodiment of the present application is more accurate and more appropriate in determining the MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system. When the number of transmission layers is greater than or equal to 2, if the first PUSCH and the second PUSCH are set to use the same MCS mapping relationship and / or MCS index, transmission resources can be saved and the load of the DCI used to schedule the first PUSCH and the second PUSCH can be reduced; if the MCS mapping relationship and / or MCS index of the first PUSCH and the second PUSCH are set respectively, the transmission of the channel can have higher adaptability, demodulation performance and efficiency, effectively improving the transmission performance of the communication system.

[0184] FIG6 is a flow chart illustrating a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is illustrated by taking the network device shown in FIG1 as an example. The method includes at least some of the following steps:

[0185] Step 610: Send transmission parameter information. The transmission parameter information and the MCS mapping relationship are used to determine the MCS information of the channel.

[0186] The transmission parameter information is the transmission parameter information of the channel, which is used to indicate the transmission parameters of the channel. The transmission parameters include one or more parameters such as the number of transmission layers, coding parameters, and modulation parameters.

[0187] The transmission parameter information is sent by the network device to the terminal device. Optionally, the transmission parameter information is sent via unicast, multicast, or broadcast. Optionally, the number of transmission layers of the channel is explicitly indicated by the transmission parameter information, or the number of transmission layers of the channel is implicitly indicated by the transmission parameter information. Optionally, the specific method of implicit indication can be agreed upon by the communication protocol, configured by the network device, or determined by negotiation between the network device and the terminal device.

[0188] The MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship. The first mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is 1, and the second mapping relationship includes MCS information corresponding to a case where the number of transmission layers of the transmission parameter information indicating the channel is greater than or equal to 2. The first mapping relationship is different from the second mapping relationship.

[0189] In some embodiments, the MCS mapping relationship is agreed upon by a communication protocol or configured by a network device.

[0190] In some embodiments, the first mapping relationship includes at least two mapping relationships.

[0191] In some embodiments, the second mapping relationship includes at least two mapping relationships; or, the second mapping relationship includes at least four mapping relationships.

[0192] In some embodiments, the MCS mapping relationship includes one or more of the following information: an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the mapping relationship between the MCS index and the target code rate, the mapping relationship between the MCS index and the modulation order, and the mapping relationship between the MCS index and the frequency efficiency are stored in the form of an MCS mapping table.

[0193] MCS information refers to the MCS information used by the channel during transmission, including one or more of the modulation order, target code rate, frequency efficiency, and other information.

[0194] It should be understood that in this application, transmission can be understood as sending, receiving, or both sending and receiving.

[0195] In summary, the method provided in the embodiments of the present application supports determining different MCS information for channels with different numbers of transmission layers by sending transmission parameter information. Compared to the design in the related art that uses the same MCS mapping table regardless of the number of transmission layers of the channel, the method provided in the embodiments of the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system.

[0196] FIG7 is a flow chart illustrating a method for determining MCS mapping information provided by some exemplary embodiments of the present application. The method is illustrated by taking the method executed by a terminal device and a network device as an example. The method includes at least some of the following steps:

[0197] Step 701: The network device sends first indication information and transmission parameter information to the terminal device;

[0198] The transmission parameter information is channel transmission parameter information and is used to indicate the channel's transmission parameters. Transmission parameters include one or more of the following: the number of transmission layers, coding parameters, modulation parameters, and so on. Optionally, the number of transmission layers for a channel is explicitly indicated by the transmission parameter information, or implicitly indicated by the transmission parameter information. Optionally, the specific method for implicitly indicating this information can be agreed upon by the communication protocol, configured by the network device, or determined through negotiation between the network device and the terminal device.

[0199] In some embodiments, the first indication information is used to indicate that transform precoding is enabled. In some embodiments, the first indication information is used to indicate that the transmission of the channel adopts a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the CP-OFDM waveform is switched to a DFT-s-OFDM waveform. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a manner that enables precoding. In some embodiments, the first indication information is used to indicate that the channel is transmitted in a precoding manner, wherein the MCS mapping relationship includes a mapping relationship associated with the transmission of the channel in a precoding manner.

[0200] In some embodiments, the first indication information is carried by RRC signaling, or carried by MAC CE, or carried by DCI.

[0201] In some embodiments, the first indication information is set in the parameter msg3-transformPrecoder, or in the parameter msgA-TransformPrecoder, or in the transformPrecoder in the parameter pusch-Config, or in the transformPrecoder in the parameter configuredGrantConfig.

[0202] In the embodiment of the present application, a PUSCH channel is taken as an example for schematic description.

[0203] In some embodiments, the transmission parameter information includes precoding information and number of layers (TPMI). Exemplarily, when the PUSCH transmission is codebook-based PUSCH transmission, the transmission parameter information includes the TPMI.

[0204] In some embodiments, the transmission parameter information includes a Sounding Reference Signal Resource Indicator (SRI). Exemplarily, when the PUSCH transmission is a non-codebook-based PUSCH transmission, the transmission parameter information includes the SRI.

[0205] In some embodiments, for the following types of PUSCH, the first indication information is the RRC parameter msg3-transformPrecoder: PUSCH scheduled by RAR UL grant, PUSCH scheduled by fallbackRAR UL grant, and PUSCH scrambled by TC-RNTI and scheduled by DCI with DCI format 0_0.

[0206] In some embodiments, for MsgA PUSCH, the first indication information is the RRC parameter msgA-TransformPrecoder or msg3-transformPrecoder.

[0207] In some embodiments, when the PUSCH is scheduled by DCI with DCI format 0_0 and is scrambled by CS-RNTI with NDI=1 or C-RNTI or MCS-C-RNTI or SP-CSI-RNTI, the first indication information is msg3-transformPrecoder.

[0208] In some embodiments, when the PUSCH is scheduled by a DCI format other than DCI format 0_0, the first indication information is transformPrecoder in the RRC parameter pusch-Config.

[0209] In some embodiments, for configured grant PUSCH, the first indication information is transformPrecoder in the RRC parameter configuredGrantConfig.

[0210] Step 7022: The network device sends second indication information to the terminal device;

[0211] The second indication information is used to indicate a first quadrature amplitude modulation mode. Optionally, the first quadrature amplitude modulation mode includes one or more of a quadrature amplitude modulation 64 (QAM64) mode, a non-quadrature amplitude modulation 256 (QAM256) mode, and a non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0212] In some embodiments, the second indication information is used to indicate quadrature amplitude modulation 64 (QAM64), or is not used to indicate quadrature amplitude modulation 256 (QAM256) or non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE).

[0213] In some embodiments, the second indication information includes parameters configured as QAM64, or does not include parameters configured as QAM256, or does not include parameters configured as QAM64LowSE.

[0214] In some embodiments, the second indication information is carried in RRC signaling, or the second indication information is carried in MAC CE, or it can be understood that the second indication information is RRC signaling or MAC CE signaling.

[0215] Step 7024: The network device sends third indication information to the terminal device;

[0216] The third indication information is used to indicate a second quadrature amplitude modulation mode. Optionally, the second quadrature amplitude modulation mode includes: a quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0217] In some embodiments, the third indication information is used to indicate Quadrature Amplitude Modulation 64 Low Spectral Efficiency (QAM64LowSE).

[0218] In some embodiments, the third indication information includes parameters configured as QAM64LowSE.

[0219] In some embodiments, the third indication information is carried in RRC signaling, or the third indication information is carried in MAC CE, or it can be understood that the third indication information is RRC signaling or MAC CE signaling.

[0220] In some embodiments, the second indication information and the third indication information may correspond to the same RRC signaling or the same RRC signaling, that is, the second indication information and the third indication information are carried in the same RRC signaling for transmission, but the second indication information and the third indication information indicate different contents. Similarly, the second indication information and the third indication information may correspond to the same MAC CE, that is, the second indication information and the third indication information are carried in the same MAC CE for transmission, but the second indication information and the third indication information indicate different contents.

[0221] Exemplarily, the first RRC signaling can be used to carry both the second indication information and the third indication information. When the format of the first RRC signaling is the first format, it indicates that the first RRC signaling carries the second indication information; when the format of the first RRC signaling is the second format, it indicates that the first RRC signaling carries the third indication information. Alternatively, when the value of the first RRC signaling is the third value, it indicates that the first RRC signaling carries the second indication information; when the value of the first RRC signaling is the fourth value, it indicates that the first RRC signaling carries the third indication information.

[0222] In some embodiments, the second indication information and the third indication information may correspond to different RRC signaling, that is, the second indication information and the third indication information are carried in different RRC signaling, and the second indication information and the third indication information indicate different contents.

[0223] Exemplarily, the second indication information is carried in the first RRC signaling, and the third indication information is carried in the second RRC signaling. The first RRC signaling and the second RRC signaling differ in one or more of the following aspects: name, format, parameters, message content, and transmission channel.

[0224] Step 703: The terminal device determines the MCS mapping relationship of the channel;

[0225] When the transmission parameter information indicates that the number of transmission layers of the channel is 1, the MCS mapping relationship of the channel is the first mapping relationship.

[0226] In some embodiments, the first mapping relationship includes one or more of information such as an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship. Optionally, the first MCS mapping relationship is stored in the form of a first MCS mapping table. Optionally, the second MCS mapping relationship is stored in the form of a second MCS mapping table.

[0227] In some embodiments, the first MCS mapping table and the second MCS mapping table may be merged into one MCS mapping table, or the first MCS mapping table and the second MCS mapping table may be split into more MCS mapping tables.

[0228] Exemplarily, the first MCS mapping table is shown in Table 1, and the second MCS mapping table is shown in Table 2.

[0229] Table 1 First MCS Mapping Table

[0230] Table 2 Second MCS mapping table

[0231] When the number of transmission layers is 1, the specific method for determining the MCS mapping table of the channel can be referred to the previous content and will not be repeated here.

[0232] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, the MCS mapping relationship of the channel is the second mapping relationship.

[0233] In some embodiments, the second mapping relationship includes one or more of information such as an MCS index, a target code rate, a modulation order, and frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the second mapping relationship includes a third MCS mapping relationship and / or a fourth MCS mapping relationship. Optionally, the third MCS mapping relationship is stored in the form of a third MCS mapping table. Optionally, the fourth MCS mapping relationship is stored in the form of a fourth MCS mapping table.

[0234] In some embodiments, the third MCS mapping table and the fourth MCS mapping table may be combined into one MCS mapping table, or the third MCS mapping table and the fourth MCS mapping table may be split into more MCS mapping tables.

[0235] Exemplarily, the third MCS mapping table is shown in Table 3, and the fourth MCS mapping table is shown in Table 4.

[0236] Table 3 Third MCS mapping table

[0237] Table 4 Fourth MCS mapping table

[0238] In some embodiments, the first MCS mapping table, the second MCS mapping table, the third MCS mapping table and the fourth MCS mapping table can be merged into one MCS mapping table, or the first MCS mapping table, the second MCS mapping table, the third MCS mapping table and the fourth MCS mapping table can be split into more MCS mapping tables.

[0239] In some embodiments, the terminal device receives the first indication information, and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the third MCS mapping relationship based on the first indication information and the transmission parameter information. This determination method can be considered as a default method, which can be determined by negotiation between the network device and the terminal device, or can be agreed upon by the communication protocol, or can be configured by the network device. That is to say, when the waveform of the channel is a DFT-s-OFDM waveform and the number of transmission layers of the channel is greater than or equal to 2, the MCS mapping relationship of the channel defaults to the third MCS mapping relationship.

[0240] In some embodiments, if the terminal device receives first indication information and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second mapping relationship based on the first indication information and the transmission parameter information, that is, the MCS mapping relationship of the PUSCH is the third MCS mapping relationship or the fourth MCS mapping relationship. Furthermore, if the terminal device also receives second indication information, then the terminal device determines that the MCS mapping relationship of the PUSCH is the third MCS mapping relationship based on the second indication information, the first indication information, and the transmission parameter information.

[0241] By comparing the third MCS mapping table with the first MCS mapping table, it can be found that when the MCS index is 17, the modulation order corresponding to the third MCS mapping table is 6, the target code rate is 438, and the frequency efficiency is 2.5664. Compared with the modulation order, target code rate and frequency efficiency corresponding to the MCS index of 16 in the first MCS mapping table, the third MCS mapping table can achieve a frequency efficiency similar to that of the first MCS mapping table at a lower code rate, thereby effectively improving the demodulation performance of PUSCH and improving the coverage of PUSCH.

[0242] In some embodiments, the terminal device receives the first indication information, and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the fourth MCS mapping relationship based on the first indication information and the transmission parameter information. This determination method can be considered as a default method, which can be determined by negotiation between the network device and the terminal device, or agreed upon by the communication protocol, or configured by the network device. That is to say, when the waveform of the channel is a DFT-s-OFDM waveform and the number of transmission layers of the channel is greater than or equal to 2, the MCS mapping table of the channel defaults to the fourth MCS mapping table.

[0243] In some embodiments, if the terminal device receives first indication information and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second mapping relationship based on the first indication information and the transmission parameter information, that is, the MCS mapping relationship of the PUSCH is the third MCS mapping relationship or the fourth MCS mapping relationship. Furthermore, if the terminal device also receives third indication information, then the terminal device determines that the MCS mapping relationship of the PUSCH is the fourth MCS mapping relationship based on the third indication information, the first indication information, and the transmission parameter information.

[0244] By comparing the fourth MCS mapping table with the second MCS mapping table, it can be found that when the MCS index is 21, 22 or 23, the modulation order, target code rate, and frequency efficiency corresponding to the fourth MCS mapping table are compared with the modulation order, target code rate, and frequency efficiency in the second MCS mapping table. The fourth MCS mapping table can achieve a frequency efficiency similar to that of the second MCS mapping table at a lower code rate, thereby effectively improving the demodulation performance of PUSCH and enhancing the coverage of PUSCH.

[0245] Step 704: The network device sends MCS index indication information to the terminal device;

[0246] The MCS index indication information is used to determine the MCS index corresponding to the channel. The MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

[0247] In some embodiments, based on the MCS index indication information, the target row, target column, or target element corresponding to the channel in the MCS mapping relationship is determined, where an element can be understood as an entry or a cell.

[0248] In some embodiments, the MCS index indication information is carried in the DCI.

[0249] Exemplarily, the MCS index indication information occupies 5 bits and is carried in the DCI. Exemplarily, the MCS index indication information indicates that the MCS index corresponding to the channel is 1.

[0250] Step 705: The terminal device determines the MCS information corresponding to the channel.

[0251] The MCS information includes one or more of the modulation order, target code rate, and frequency efficiency.

[0252] In some embodiments, the MCS mapping table includes an MCS index and one or more of a modulation order, a target code rate, and a frequency efficiency. Based on the MCS index, one or more of the modulation order, the target code rate, and the frequency efficiency corresponding to the MCS index can be determined in the MCS mapping relationship.

[0253] Exemplarily, the terminal device determines in step 703 that the MCS mapping relationship of the PUSCH is the third MCS mapping table, and the terminal device receives MCS indication information indicating that the MCS index is 1. Then, the terminal device uses the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 1 in the third MCS mapping table to encode and modulate the PUSCH, or uses the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 1 in the third MCS mapping table to demodulate and decode the PUSCH.

[0254] It should be understood that in the embodiment of the present application, step 7022 and step 7024 are optional steps. For example, step 7022 and step 7024 may not be executed; for another example, step 7022 may be executed but step 7024 may not be executed; for another example, step 7024 may be executed but step 7022 may not be executed. The execution order of the above steps can be adjusted according to actual circumstances. For example, step 7022 may be executed before step 701; for another example, step 7024 may be executed before step 701; for another example, step 704 may be executed before step 703; for another example, step 704 may be executed before step 701; for another example, step 704 may be executed before step 7022; for another example, step 704 may be executed before step 7024, and so on. The above steps can be split or merged according to actual conditions. For example, step 701 can be split into two steps: one of the steps is that the network device sends the first indication information to the terminal device, and the other step is that the network device sends the transmission parameter information to the terminal device; for example, any two steps in step 701, step 7022 and step 704 are merged into one step; for example, any two steps in step 701, step 7024 and step 704 are merged into one step; for example, step 701, step 7022 and step 704 are merged into one step; for example, step 701, step 7024 and step 704 are merged into one step; for example, step 703 and step 705 are merged into one step, and so on.

[0255] In summary, in the method provided in the embodiment of the present application, when the terminal device receives the first indication information and the number of transmission layers of the channel is greater than or equal to 2 layers, the terminal device can determine the MCS mapping relationship in a default manner, or can further determine the MCS mapping relationship based on the second indication information or the third indication information. Therefore, the method provided in the embodiment of the present application has high flexibility and can meet the requirements for determining the MCS mapping information in different scenarios. The solution of determining the MCS mapping relationship in a default manner is simple and convenient, and can effectively improve communication efficiency. The solution of further determining the MCS mapping relationship based on the second indication information or the third indication information has higher accuracy, and can determine a more suitable and more matching MCS mapping relationship for the channel according to actual conditions, thereby effectively improving communication quality.

[0256] Moreover, compared with the solution of setting the same MCS mapping table for channels with different numbers of transmission layers without considering the number of transmission layers, the solution provided by the embodiment of the present application is more targeted, providing an MCS mapping relationship that is more suitable for channel matching and transmission parameters, and has a better improvement in the transmission efficiency and transmission quality of the communication system. Compared with the first and second MCS mapping relationships, the third and fourth MCS mapping relationships support achieving similar frequency efficiency at a lower code rate, which helps to improve the demodulation performance of the channel and enhance the coverage of the channel.

[0257] FIG8 is a flow chart illustrating a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is illustrated by taking the method executed by a terminal device and a network device as an example. The method includes at least some of the following steps:

[0258] Step 801: The network device sends first indication information and transmission parameter information to the terminal device;

[0259] For related content, please refer to step 701 and will not be repeated here.

[0260] Step 8022: The network device sends second indication information to the terminal device;

[0261] The second indication information is used to indicate Qam64, or is not used to indicate Qam256, or is not used to indicate Qam64LowSE. That is, the second indication information includes parameters configured as Qam64, or does not include parameters configured as Qam256, or does not include parameters configured as Qam64LowSE.

[0262] In some embodiments, the second indication information is used to indicate quadrature amplitude modulation 64 (QAM64), or is not used to indicate quadrature amplitude modulation 256 (QAM256) or non-quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE).

[0263] In some embodiments, the second indication information includes parameters configured as QAM64, or does not include parameters configured as QAM256, or does not include parameters configured as QAM64LowSE.

[0264] In some embodiments, the second indication information is carried in RRC signaling, or the second indication information is carried in MAC CE, or it can be understood that the second indication information is RRC signaling or MAC CE signaling.

[0265] Step 8024: The network device sends third indication information to the terminal device;

[0266] The third indication information is used to indicate a second quadrature amplitude modulation mode. Optionally, the second quadrature amplitude modulation mode includes: a quadrature amplitude modulation 64 low spectrum efficiency (QAM64LowSE) mode.

[0267] In some embodiments, the third indication information is used to indicate Quadrature Amplitude Modulation 64 Low Spectral Efficiency (QAM64LowSE).

[0268] In some embodiments, the third indication information includes parameters configured as QAM64LowSE.

[0269] In some embodiments, the third indication information is carried in RRC signaling, or the third indication information is carried in MAC CE, or it can be understood that the third indication information is RRC signaling or MAC CE signaling.

[0270] In some embodiments, the second indication information and the third indication information may correspond to the same type of RRC signaling or the same RRC signaling, that is, the second indication information and the third indication information are carried in the same RRC signaling for transmission, but the second indication information and the third indication information indicate different contents.

[0271] Exemplarily, the first RRC signaling can be used to carry both the second indication information and the third indication information. When the format of the first RRC signaling is the first format, it indicates that the first RRC signaling carries the second indication information; when the format of the first RRC signaling is the second format, it indicates that the first RRC signaling carries the third indication information. Alternatively, when the value of the first RRC signaling is the third value, it indicates that the first RRC signaling carries the second indication information; when the value of the first RRC signaling is the fourth value, it indicates that the first RRC signaling carries the third indication information.

[0272] In some embodiments, the second indication information and the third indication information may correspond to different RRC signaling, that is, the second indication information and the third indication information are carried in different RRC signaling, and the second indication information and the third indication information indicate different contents.

[0273] Exemplarily, the second indication information is carried in the first RRC signaling, and the third indication information is carried in the second RRC signaling. The first RRC signaling and the second RRC signaling differ in one or more of the following aspects: name, format, parameters, message content, and transmission channel.

[0274] Step 803: The network device sends fourth indication information to the terminal device;

[0275] In some embodiments, the value of the fourth indication information is used to indicate the MCS mapping relationship.

[0276] In some embodiments, the fourth indication information is carried in RRC signaling, or in MAC CE, or in DCI.

[0277] Step 804: The terminal device determines the MCS mapping relationship of the channel;

[0278] When the transmission parameter information indicates that the number of transmission layers of the channel is 1, the MCS mapping relationship of the channel is the first mapping relationship.

[0279] In some embodiments, the first mapping relationship includes one or more of information such as an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship. Optionally, the first MCS mapping relationship is stored in the form of a first MCS mapping table. Optionally, the second MCS mapping relationship is stored in the form of a second MCS mapping table.

[0280] In some embodiments, the first MCS mapping table and the second MCS mapping table may be merged into one MCS mapping table, or the first MCS mapping table and the second MCS mapping table may be split into more MCS mapping tables.

[0281] Exemplarily, the first MCS mapping table is shown in Table 1, and the second MCS mapping table is shown in Table 2.

[0282] When the number of transmission layers is 1, the specific method for determining the MCS mapping table of the channel can be referred to the previous content and will not be repeated here.

[0283] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, the MCS mapping relationship of the channel is the second mapping relationship.

[0284] In some embodiments, the second mapping relationship includes one or more of information such as an MCS index, a target code rate, a modulation order, and a frequency efficiency. Optionally, a mapping relationship exists between the MCS index and the target code rate, a mapping relationship exists between the MCS index and the modulation order, and a mapping relationship exists between the MCS index and the frequency efficiency. Optionally, the second mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship and / or a third MCS mapping relationship and / or a fourth MCS mapping relationship. Optionally, the first MCS mapping relationship is stored in the form of a first MCS mapping table. Optionally, the second MCS mapping relationship is stored in the form of a second MCS mapping table. Optionally, the third MCS mapping relationship is stored in the form of a third MCS mapping table. Optionally, the fourth MCS mapping relationship is stored in the form of a fourth MCS mapping table.

[0285] Exemplarily, the third MCS mapping table is shown in Table 3, and the fourth MCS mapping table is shown in Table 4.

[0286] In some embodiments, if the terminal device receives first indication information and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second mapping relationship based on the first indication information and the transmission parameter information, that is, the MCS mapping table relationship of the PUSCH is the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, or the fourth MCS mapping relationship. Further, if the terminal device receives second indication information, then the terminal device determines that the MCS mapping relationship of the PUSCH is the first MCS mapping relationship or the third MCS mapping relationship based on the second indication information, the first indication information, and the transmission parameter information. Further, if the value of the fourth indication information received by the terminal device is the first value, then the terminal device determines that the MCS mapping relationship of the PUSCH is the first MCS mapping relationship based on the fourth indication information, the second indication information, the first indication information, and the transmission parameter information. If the value of the fourth indication information received by the terminal device is the second value, then the terminal device determines that the MCS mapping relationship of the PUSCH is the third MCS mapping relationship based on the fourth indication information, the second indication information, the first indication information, and the transmission parameter information.

[0287] Exemplarily, the fourth indication information occupies 1 bit and is carried in RRC signaling, MAC CE, or DCI. When the terminal device receives the second indication information and the fourth indication information, and the status value of the fourth indication information is 0, the terminal device determines that the MCS mapping relationship of the channel is the third MCS mapping table; when the terminal device receives the second indication information and the fourth indication information, and the status value of the fourth indication information is 1, the terminal device determines that the MCS mapping relationship of the channel is the first MCS mapping table.

[0288] By comparing the third MCS mapping table with the first MCS mapping table, it can be found that when the MCS index is 17, the modulation order corresponding to the third MCS mapping table is 6, the target code rate is 438, and the frequency efficiency is 2.5664. Compared with the modulation order, target code rate and frequency efficiency corresponding to the MCS index of 16 in the first MCS mapping table, the third MCS mapping table can achieve a frequency efficiency similar to that of the first MCS mapping table at a lower code rate, thereby effectively improving the demodulation performance of PUSCH and improving the coverage of PUSCH.

[0289] In some embodiments, if the terminal device receives first indication information and the number of transmission layers of the PUSCH is greater than or equal to 2, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second mapping relationship based on the first indication information and the transmission parameter information, that is, the MCS mapping relationship of the PUSCH is the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, or the fourth MCS mapping relationship. Further, if the terminal device receives third indication information, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second MCS mapping relationship or the fourth MCS mapping relationship based on the third indication information, the first indication information, and the transmission parameter information. Further, if the value of the fourth indication information received by the terminal device is the first value, then the terminal device determines that the MCS mapping relationship of the PUSCH is the second MCS mapping relationship based on the fourth indication information, the third indication information, the first indication information, and the transmission parameter information. If the value of the fourth indication information received by the terminal device is the second value, then the terminal device determines that the MCS mapping relationship of the PUSCH is the fourth MCS mapping relationship based on the fourth indication information, the third indication information, the first indication information, and the transmission parameter information.

[0290] Exemplarily, the fourth indication information occupies 1 bit and is carried in RRC signaling or MAC CE or DCI. The waveform of the channel is a DFT-s-OFDM waveform, and the number of transmission layers of the channel is greater than or equal to 2. When the terminal device receives the third indication information and the fourth indication information, and the status value of the fourth indication information is 0, the terminal device determines that the MCS mapping relationship of the channel is the fourth MCS mapping table; when the terminal device receives the third indication information and the fourth indication information, and the status value of the fourth indication information is 1, the terminal device determines that the MCS mapping relationship of the channel is the second MCS mapping table.

[0291] By comparing the fourth MCS mapping table with the second MCS mapping table, it can be found that when the MCS index is 21, 22 or 23, the modulation order, target code rate, and frequency efficiency corresponding to the fourth MCS mapping table are compared with the modulation order, target code rate, and frequency efficiency in the second MCS mapping table. The fourth MCS mapping table can achieve a frequency efficiency similar to that of the second MCS mapping table at a lower code rate, thereby effectively improving the demodulation performance of PUSCH and enhancing the coverage of PUSCH.

[0292] Step 805: The network device sends MCS index indication information to the terminal device;

[0293] The MCS index indication information is used to determine the MCS index corresponding to the channel. The MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship determined based on the transmission parameter information.

[0294] Alternatively, the MCS index indication information is used to determine the target row, target column, or target element corresponding to the channel in the MCS mapping table, where an element can be understood as an entry or a cell.

[0295] In some embodiments, the MCS index indication information is carried in the DCI.

[0296] Exemplarily, the MCS index indication information occupies 5 bits and is carried in the DCI, and the MCS index corresponding to the MCS indication information indicating channel is 17.

[0297] Step 806: The terminal device determines the MCS information corresponding to the channel.

[0298] The MCS information includes one or more of the modulation order, target code rate, and frequency efficiency.

[0299] In some embodiments, the MCS mapping table includes an MCS index and one or more of a modulation order, a target code rate, and a frequency efficiency. Based on the MCS index, one or more of the modulation order, the target code rate, and the frequency efficiency corresponding to the MCS index can be determined in the MCS mapping table.

[0300] Exemplarily, the terminal device determines in step 804 that the MCS mapping table of the PUSCH is the fourth MCS mapping table, and the terminal device receives MCS indication information indicating that the MCS index is 17. Then, the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 17 in the fourth MCS mapping table are used to encode and modulate the PUSCH, or the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 17 in the fourth MCS mapping table are used to demodulate and decode the PUSCH.

[0301] It should be understood that in the embodiment of the present application, step 8022 and step 8024 are optional steps. For example, step 8022 and step 8024 are not executed; for another example, step 8022 is executed but step 8024 is not executed; for another example, step 8024 is executed but step 8022 is not executed. The execution order of the above steps can be adjusted according to actual conditions. For example, step 8022 is executed before step 801; for another example, step 8024 is executed before step 801; for another example, step 803 is executed before step 801; for another example, step 803 is executed before step 8022; for another example, step 803 is executed before step 8024; for another example, step 805 is executed before step 801; for another example, step 805 is executed before step 8022; for another example, step 805 is executed before step 8024; for another example, step 805 is executed before step 803, and so on. The above steps can be split or merged according to actual conditions. For example, step 801 can be split into two steps: one of the steps is that the network device sends the first indication information to the terminal device, and the other step is that the network device sends the transmission parameter information to the terminal device; for example, any two steps or any three steps in step 801, step 8022, step 803 and step 805 are merged into one step; for example, any two steps or any three steps in step 801, step 8024, step 803 and step 805 are merged into one step; for example, step 801, step 8022, step 803 and step 805 are merged into one step; for example, step 801, step 8024, step 803 and step 805 are merged into one step; for example, step 804 and step 86 are merged into one step, and so on.

[0302] In summary, the method provided in the embodiment of the present application provides multiple options for determining the MCS mapping information when the terminal device receives the first indication information and the number of transmission layers of the channel is greater than or equal to 2 layers. The terminal device can determine the MCS mapping relationship among multiple MCS mapping relationships based on the fourth indication information, the second indication information, or the third indication information. This not only makes the method provided in the embodiment of the present application applicable to the needs of determining the MCS mapping relationship in various communication scenarios, but also supports determining a more appropriate, more matching, and more accurate MCS mapping relationship for the channel based on actual conditions, effectively improving the flexibility and communication quality of determining the MCS mapping relationship.

[0303] Moreover, compared with the solution of setting the same MCS mapping table for channels with different numbers of transmission layers without considering the number of transmission layers, the solution provided by the embodiment of the present application is more targeted, and the determined MCS mapping relationship is more closely matched with the transmission parameters of the channel, which significantly improves the transmission efficiency and quality of the communication system. Compared with the first and second MCS mapping tables, the third and fourth MCS mapping tables support achieving similar frequency efficiency at a lower code rate, which helps improve the demodulation performance of the channel and enhances the coverage of the channel.

[0304] FIG9 is a flow chart illustrating a method for determining MCS mapping information provided by some exemplary embodiments of the present application. This method is illustrated by taking the method executed by a terminal device and a network device as an example. The method includes at least some of the following steps:

[0305] Step 901: The network device sends transmission parameter information to the terminal device;

[0306] For related content, please refer to step 610, which will not be repeated here.

[0307] Step 902: The network device sends first indication information to the terminal device;

[0308] For related content, please refer to step 701 or step 801, which will not be repeated here.

[0309] It should be understood that step 902 is an optional step.

[0310] That is, the channel transmission may or may not adopt the DFT-s-OFDM waveform. Or it can be understood that the network device may not instruct the terminal device to enable transmit precoding; or instruct the terminal device to disable transmit precoding (Transform precoding is disabled); or not instruct the terminal device to use the DFT-s-OFDM waveform for channel transmission; or not instruct the terminal device to switch the CP-OFDM waveform to the DFT-s-OFDM waveform; or instruct the terminal device to use the CP-OFDM waveform for channel transmission; or instruct the terminal device to switch the DFT-s-OFDM waveform to the CP-OFDM waveform; or instruct the terminal device to use a waveform other than the CP-OFDM waveform and the DFT-s-OFDM waveform for channel transmission.

[0311] Step 903: The network device sends the second indication information or the third indication information to the terminal device;

[0312] For related content, please refer to step 7022, or step 7024, or step 8022, or step 8024, which will not be repeated here.

[0313] It should be understood that step 903 is an optional step.

[0314] Step 904: The network device sends fourth indication information to the terminal device;

[0315] For related content, please refer to step 803, which will not be repeated here.

[0316] It should be understood that step 904 is an optional step.

[0317] Step 905: The terminal device determines the MCS mapping relationship of the channel;

[0318] The method provided in the embodiment of the present application is applicable not only to DFT-s-OFDM waveforms, but also to waveforms other than DFT-s-OFDM waveforms, such as CP-OFDM waveforms.

[0319] The method provided in the embodiment of the present application is applicable to both single transmission reception point (TRP) scenarios and multi-TRP scenarios.

[0320] When the method provided in the embodiment of the present application is applied to a single TRP scenario, or when the number of channels is one, the MCS mapping relationship can be determined by referring to the relevant contents in step 703 and step 804, which will not be repeated here.

[0321] When the method provided in the embodiment of the present application is applied to a multi-TRP scenario, or when the number of channels is greater than or equal to two, the MCS mapping relationship can be determined for each channel separately. The MCS mapping relationships of different channels can be determined uniformly or individually. The MCS mapping relationships of different channels can be the same or different. Among them, the method for determining the MCS mapping information of each channel can refer to the relevant content in step 703 and step 804, which will not be repeated here.

[0322] Exemplarily, the method provided in the embodiment of the present application is applied to a multi-TRP scenario, and when the transmission scheme of the channel includes SDM or SFN, the channel includes at least two channels, such as a first PUSCH and a second PUSCH, wherein the first PUSCH includes at least one PUSCH associated with the first spatial information, and the second PUSCH includes at least one PUSCH associated with the second spatial information. The terminal device can determine the corresponding MCS mapping relationship for the first PUSCH and the second PUSCH respectively. In other words, the method provided in the embodiment of the present application supports further detailed and accurate determination of a suitable MCS mapping relationship for the channel through the spatial information of the channel, fully considering the various transmission parameters of the channel, so that the transmission quality and communication efficiency of the channel are further improved.

[0323] Step 906: The network device sends MCS index indication information to the terminal device;

[0324] For related content, please refer to step 704 and step 805, which will not be repeated here.

[0325] Step 907: The terminal device determines the MCS information corresponding to the channel.

[0326] The MCS information includes one or more of the modulation order, target code rate, and frequency efficiency.

[0327] After receiving the MCS index indication information, the terminal device can determine the MCS index based on the MCS index indication information. Based on the determined MCS index, the terminal device can determine one or more of the modulation order, target code rate, and frequency efficiency corresponding to the channel in the determined MCS mapping table.

[0328] When the method provided in the embodiment of the present application is applied to a single TRP scenario, or when the number of channels is one, you can refer to the relevant content in steps 705 and 806 to determine one or more of the modulation order, target code rate, and frequency efficiency, which will not be repeated here.

[0329] When the method provided in the embodiment of the present application is applied to a multi-TRP scenario, or when the number of channels is greater than or equal to two, the MCS index can be determined for each channel separately. The MCS indexes of different channels can be determined uniformly or individually. The MCS indexes of different channels can be the same or different. The method for determining the MCS index of each channel can refer to the relevant content in step 705 and step 806, which will not be repeated here.

[0330] In some embodiments, the MCS mapping relationships of different channels are the same, and the MCS indexes of different channels are the same. Alternatively, the MCS mapping relationships of different channels are the same, and the MCS indexes of different channels are different. Alternatively, the MCS mapping relationships of different channels are different, and the MCS indexes of different channels are the same. Alternatively, the MCS mapping relationships of different channels are different, and the MCS indexes of different channels are different. It can be seen that the method provided in the embodiment of the present application has good flexibility, provides multiple candidate methods for determining the MCS mapping relationship and MCS index of the channel, and is applicable to the determination requirements of the MCS mapping relationship and MCS index in various communication scenarios.

[0331] In some embodiments, the determination of the MCS mapping information and the determination of the MCS index of different channels can adopt a default method. For example, the MCS mapping relationship of different channels is the same by default and is a certain MCS mapping relationship, and / or, the MCS index of different channels is the same by default and is a certain MCS index. This makes the determination of the MCS mapping relationship and the MCS index simpler, greatly reduces the resource consumption in the process of determining the MCS mapping relationship and the MCS index, and effectively improves the transmission efficiency and demodulation efficiency.

[0332] In some embodiments, the determination of MCS mapping information and MCS indexes for different channels can be determined in different ways, respectively. This allows for greater flexibility in determining the MCS mapping relationship and MCS index, while also enabling each channel to correspond to a more appropriate MCS mapping relationship and MCS index, effectively improving the transmission performance and de-hopping performance of each channel. In other words, the method provided in the embodiments of the present application supports further detailed and accurate determination of an appropriate MCS mapping relationship / MCS index for a channel based on the spatial information of the channel, fully considering various transmission parameters of the channel, and further improving the transmission quality and communication efficiency of the channel.

[0333] Exemplarily, the method provided in an embodiment of the present application is applied to a multi-TRP scenario, and when the transmission scheme of the channel includes SDM or SFN, the channel includes a first PUSCH and a second PUSCH, wherein the first PUSCH is associated with the first spatial information and the second PUSCH is associated with the second spatial information. The terminal device can determine the corresponding MCS index for the first PUSCH and the second PUSCH, respectively.

[0334] When the MCS index corresponding to the first PUSCH and the MCS index corresponding to the second PUSCH are determined separately, or when the MCS index corresponding to the first PUSCH and the MCS index corresponding to the second PUSCH are different, the determination methods of the MCS index corresponding to the first PUSCH and the MCS index corresponding to the second PUSCH include at least the following two methods:

[0335] The first method: determine according to different MCS indication information

[0336] For example, the terminal device determines the MCS index of the first PUSCH in the MCS mapping relationship according to the first MCS indication information, and determines the corresponding index of the second PUSCH in the MCS mapping relationship according to the second MCS indication information.

[0337] Exemplarily, the first MCS indication information and the second MCS indication information occupy 5 bits respectively, and the second MCS indication information is a new field in the DCI.

[0338] The second method: determine according to the same MCS indication information

[0339] For example, the terminal device determines the MCS index of the first PUSCH in the MCS mapping relationship according to the first MCS indication information, and determines the corresponding index of the second PUSCH in the MCS mapping relationship according to the first MCS indication information and the first bias value, where the first bias value is an integer.

[0340] For another example, the terminal device determines the MCS index of the first PUSCH in the MCS mapping relationship according to the first MCS indication information, and determines the corresponding index of the second PUSCH in the MCS mapping relationship according to the first MCS indication information and the first offset value.

[0341] In some embodiments, the first offset value is agreed upon by a communication protocol, or configured by a network device, or determined by negotiation between the network device and the terminal device.

[0342] In some embodiments, the first offset value is carried in the DCI and occupies n bits (n is a positive integer, such as n is 1 or 2 or 3 or 4 or 5).

[0343] In some embodiments, the first offset value is a value in an offset value set, which is agreed upon in a communication protocol, configured by a network device, or determined by negotiation between the network device and a terminal device.

[0344] Exemplarily, the first MCS indication information indicates that the MCS index is 17, then the terminal device determines that the MCS index of the first PUSCH in the MCS mapping relationship is 17. The offset value set is {-4, -2, 0, 2}, and the first offset value indication is -2, then the terminal device determines that the MCS index of the second PUSCH in the MCS mapping relationship is 17-2=15.

[0345] Assuming that the MCS mapping relationship corresponding to the first PUSCH is the third MCS mapping table, the first PUSCH is encoded, modulated or decoded, and demodulated using the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 17 in the third MCS mapping table. Assuming that the MCS mapping relationship corresponding to the second PUSCH is also the third MCS mapping table, the second PUSCH is encoded, modulated or decoded, and demodulated using the modulation order, target code rate, and frequency efficiency corresponding to the MCS index of 15 in the third MCS mapping table.

[0346] In summary, the method provided in the embodiments of the present application supports determining different MCS mapping relationships for channels with different communication scenarios, different numbers of transmission layers, and different spatial information. Compared with the related art, which uses the same MCS mapping table design regardless of the number of transmission layers of the channel, the method provided in the embodiments of the present application determines a more accurate and appropriate MCS mapping relationship for channels with a number of transmission layers greater than or equal to 2, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system.

[0347] If different PUSCHs use the same MCS mapping relationship and / or MCS index, transmission resources can be saved, the load of the DCI used to schedule the first PUSCH and the second PUSCH can be reduced, the complexity of the overall determination process of the MCS mapping relationship and the MCS index is reduced, the signaling consumption required for the overall determination process of the MCS mapping relationship and the MCS index is saved, and the communication efficiency of the communication system is improved.

[0348] If different PUSCHs use different MCS mapping relationships and / or MCS indexes, or a separate determination method is used to determine the MCS mapping relationship and / or MCS index, the method provided in the embodiment of the present application is applicable to a variety of communication scenarios, and supports matching more accurate and appropriate MCS mapping relationships and MCS indexes for channels under different channel conditions, so that channels with different transmission parameters can obtain better adaptability, transmission performance, and demodulation performance.

[0349] Figure 10 shows a schematic diagram of the structure of an apparatus for determining MCS mapping information provided by some exemplary embodiments of the present application. The apparatus includes at least some of the following modules: a determination module 1011, a first receiving module 1012, a first sending module 1013, and a first processing module 1014:

[0350] A determination module 1011 is configured to determine MCS information of a channel based on the transmission parameter information and the MCS mapping relationship;

[0351] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0352] In some embodiments, the apparatus further includes a first receiving module 1012, configured to receive MCS mapping indication information, where the MCS mapping indication information is used to indicate the MCS mapping relationship.

[0353] In some embodiments, the determination module 1011 is further configured to determine the MCS information of the channel based on the transmission parameter information and the MCS mapping indication information.

[0354] In some embodiments, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship;

[0355] The second mapping relationship includes one or more of the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, and the fourth MCS mapping relationship;

[0356] The first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

[0357] In some embodiments, the MCS mapping indication information includes first indication information, where the first indication information is used to indicate that the channel is transmitted in a precoding manner, and the MCS mapping relationship includes a mapping relationship associated with the transmission of the channel in a precoding manner.

[0358] In some embodiments, the determining module 1011 is further configured to:

[0359] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the second indication information, determining the MCS information of the channel based on the third MCS mapping relationship;

[0360] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the third indication information, determining the MCS information of the channel based on the fourth MCS mapping relationship;

[0361] The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode.

[0362] In some embodiments, the determining module 1011 is further configured to:

[0363] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, determining the MCS information of the channel based on the first MCS mapping relationship or the third MCS mapping relationship;

[0364] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information, and the fourth indication information, determining the MCS information of the channel based on the second MCS mapping relationship or the fourth MCS mapping relationship;

[0365] The second indication information is used to indicate a first quadrature amplitude modulation mode, the third indication information is used to indicate a second quadrature amplitude modulation mode, the first quadrature amplitude modulation mode is different from the second quadrature amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first quadrature amplitude modulation mode and / or the second quadrature amplitude modulation mode;

[0366] The value of the fourth indication information is used to indicate the MCS mapping relationship.

[0367] In some embodiments, the determining module 1011 is further configured to:

[0368] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, and the value of the fourth indication information is the first value, determining the MCS information of the channel based on the first MCS mapping relationship;

[0369] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, and the value of the fourth indication information is the second value, determining the MCS information of the channel based on the third MCS mapping relationship;

[0370] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information, and the fourth indication information, and the value of the fourth indication information is the first value, determining the MCS information of the channel based on the second MCS mapping relationship;

[0371] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the fourth MCS mapping relationship.

[0372] In some embodiments, in the third MCS mapping relationship, when the MCS index is 17, the target code rate is 438.

[0373] In some embodiments, in the fourth MCS mapping relationship, when the MCS index is 21, the target code rate is 438; and / or, when the MCS index is 22, the target code rate is 466; and / or, when the MCS index is 23, the target code rate is 517.

[0374] In some embodiments, the fourth indication information is carried by radio resource control RRC signaling, or carried by medium access control control element MAC CE, or carried by downlink control information DCI.

[0375] In some embodiments, the second indication information and / or the third indication information is carried by radio resource control RRC signaling.

[0376] In some embodiments, the second indication information and the third indication information are carried by the same RRC signaling, or the second indication information and the third indication information are carried by different RRC signaling.

[0377] In some embodiments, the first indication information is carried by one or more of radio resource control RRC signaling, medium access control control element MAC CE, and downlink control information DCI.

[0378] In some embodiments, the first indication information is set in information 3-transmission precoding parameter msg3-transformPrecoder, or information A-transmission precoding parameter msgA-TransformPrecoder, or in the transmission precoding parameter transformPrecoder in the physical uplink shared channel-configuration parameter pusch-Config, or in the transmission precoding parameter transformPrecoder in the configuration grant configuration parameter configuredGrantConfig.

[0379] In some embodiments, the determination module 1011 is further used to determine the MCS index corresponding to the channel based on the MCS index indication information, where the MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

[0380] In some embodiments, the determining module 1011 is further configured to determine the MCS information of the channel based on the transmission parameter information, the MCS mapping relationship, and the MCS index;

[0381] The MCS information includes one or more of a modulation order, a target code rate, and a frequency efficiency.

[0382] In some embodiments, the MCS index indication information is carried by downlink control information DCI.

[0383] In some embodiments, the channel includes one physical uplink shared channel PUSCH or at least two PUSCHs.

[0384] In some embodiments, the at least two PUSCHs include a first PUSCH and a second PUSCH;

[0385] The first PUSCH includes at least one PUSCH associated with first spatial information, the second PUSCH includes at least one PUSCH associated with second spatial information, and the first spatial information is different from the second spatial information.

[0386] In some embodiments, the MCS mapping relationship corresponding to the first PUSCH is the same as or different from the MCS mapping relationship corresponding to the second PUSCH.

[0387] In some embodiments, the MCS index corresponding to the first PUSCH is the same as or different from the MCS index corresponding to the second PUSCH.

[0388] In some embodiments, the MCS index indication information includes first MCS index indication information and second MCS index indication information;

[0389] The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the second MCS index indication information.

[0390] In some embodiments, the MCS index indication information includes first MCS index indication information;

[0391] The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the first MCS index indication information and a first offset value.

[0392] In some embodiments, the value of the MCS index corresponding to the second PUSCH is the sum of the value of the MCS index corresponding to the first PUSCH and the first offset value.

[0393] In some embodiments, the transmission scheme of the channel includes SDM or SFN.

[0394] The determination module 1011 is used to execute the steps related to determination, processing, and selection executed by the terminal device in the above embodiments.

[0395] In some embodiments, the apparatus further includes a first receiving module 1012 configured to execute the steps related to reception executed by the terminal device in the above-mentioned embodiments.

[0396] In some embodiments, the apparatus further includes a first sending module 1013 configured to execute the steps related to sending executed by the terminal device in each of the above embodiments.

[0397] In some embodiments, the apparatus provided by the embodiments of the present application includes a determination module 1011, which supports the execution of all determination-related steps, all processing-related steps, and all selection-related steps performed by the terminal device in the above-mentioned embodiments.

[0398] In some embodiments, the device provided by the embodiments of the present application includes multiple determination modules 1011, which respectively support the execution of some determination-related steps, some processing-related steps, and some selection-related steps performed by the terminal device in the above-mentioned method embodiments.

[0399] In some embodiments, the steps performed by different determination modules 1011 are identical, partially identical, or completely different.

[0400] In some embodiments, the apparatus provided by the embodiments of the present application includes a first receiving module 1012, which supports executing all the receiving steps performed by the terminal device in each of the above embodiments.

[0401] In some embodiments, the apparatus provided by the embodiments of the present application includes multiple first receiving modules 1012, and the multiple first receiving modules 1012 respectively support executing part of the receiving steps performed by the terminal device in each of the above embodiments.

[0402] In some embodiments, the steps performed by different first receiving modules 1012 are completely the same, partially the same, or completely different.

[0403] In some embodiments, the apparatus provided by the embodiments of the present application includes a first sending module 1013, which supports executing all the sending steps performed by the terminal device in each of the above embodiments.

[0404] In some embodiments, the apparatus provided by the embodiments of the present application includes multiple first sending modules 1013, and the multiple first sending modules 1013 respectively support executing part of the sending steps performed by the terminal device in each of the above embodiments.

[0405] In some embodiments, the steps performed by different first sending modules 1013 are completely the same, partially the same, or completely different.

[0406] In some embodiments, the apparatus provided by the embodiments of the present application includes a first processing module 1014, configured to perform one or more operations of encoding, modulating, demodulating, and decoding on a channel based on determined MCS information.

[0407] In summary, the apparatus provided in the embodiments of the present application supports determining different MCS information for channels with different numbers of transmission layers. Compared to related technologies that use the same MCS mapping table design regardless of the number of transmission layers of a channel, the apparatus provided in the embodiments of the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, enhancing the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system.

[0408] Figure 11 shows a schematic diagram of the structure of an apparatus for determining MCS mapping information provided by some exemplary embodiments of the present application. The apparatus includes at least some of the following modules: a second sending module 1101, a second receiving module 1102, and a second processing module 1103:

[0409] A second sending module 1101 is configured to send transmission parameter information, where the mapping relationship between the transmission parameter information and the MCS is used to determine the MCS information of the channel;

[0410] Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

[0411] In some embodiments, the second sending module 1101 is further used to send MCS mapping indication information, where the MCS mapping indication information is used to indicate the MCS mapping relationship.

[0412] In some embodiments, the first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship;

[0413] The second mapping relationship includes one or more of the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, and the fourth MCS mapping relationship;

[0414] The first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

[0415] In some embodiments, the MCS mapping indication information includes first indication information, wherein the first indication information is used to indicate that the channel is transmitted in a precoding manner, and the MCS mapping relationship is a mapping relationship among multiple MCS mapping relationships associated with the transmission of the channel in a precoding manner.

[0416] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the second indication information, the MCS information of the channel is determined based on the third MCS mapping relationship;

[0417] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the third indication information, the MCS information of the channel is determined based on the fourth MCS mapping relationship;

[0418] The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode among multiple MCS mapping relationships.

[0419] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, the MCS information of the channel is determined based on the first MCS mapping relationship or the third MCS mapping relationship;

[0420] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information, and the fourth indication information, the MCS information of the channel is determined based on the second MCS mapping relationship or the fourth MCS mapping relationship;

[0421] The second indication information is used to indicate a first quadrature amplitude modulation mode, the third indication information is used to indicate a second quadrature amplitude modulation mode, the first quadrature amplitude modulation mode is different from the second quadrature amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first quadrature amplitude modulation mode and / or the second quadrature amplitude modulation mode among multiple MCS mapping relationships;

[0422] The value of the fourth indication information is used to indicate the MCS mapping relationship.

[0423] In some embodiments, when the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the first MCS mapping relationship;

[0424] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the third MCS mapping relationship;

[0425] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information, and the fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the second MCS mapping relationship;

[0426] When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the fourth MCS mapping relationship.

[0427] In some embodiments, in the third MCS mapping relationship, when the MCS index is 17, the target code rate is 438.

[0428] In some embodiments, in the fourth MCS mapping relationship, when the MCS index is 21, the target code rate is 438; and / or, when the MCS index is 22, the target code rate is 466; and / or, when the MCS index is 23, the target code rate is 517.

[0429] In some embodiments, the fourth indication information is carried by radio resource control RRC signaling, or carried by medium access control control element MAC CE, or carried by downlink control information DCI.

[0430] In some embodiments, the second indication information and / or the third indication information is carried by radio resource control RRC signaling.

[0431] In some embodiments, the second indication information and the third indication information are carried by the same RRC signaling, or the second indication information and the third indication information are carried by different RRC signaling.

[0432] In some embodiments, the first indication information is carried by one or more of radio resource control RRC signaling, medium access control control element MAC CE, and downlink control information DCI.

[0433] In some embodiments, the first indication information is set in information 3-transmission precoding parameter msg3-transformPrecoder, or information A-transmission precoding parameter msgA-TransformPrecoder, or in the transmission precoding parameter transformPrecoder in the physical uplink shared channel-configuration parameter pusch-Config, or in the transmission precoding parameter transformPrecoder in the configuration grant configuration parameter configuredGrantConfig.

[0434] In some embodiments, the second sending module 1101 is further used to send MCS index indication information, where the MCS index indication information is used to determine the MCS index corresponding to the channel, and the MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

[0435] In some embodiments, the MCS information of the channel is determined based on the transmission parameter information, the MCS mapping relationship and the MCS index;

[0436] The MCS information includes one or more of a modulation order, a target code rate, and a frequency efficiency.

[0437] In some embodiments, the MCS index indication information is carried by downlink control information DCI.

[0438] In some embodiments, the channel includes one physical uplink shared channel PUSCH or at least two PUSCHs.

[0439] In some embodiments, the at least two PUSCHs include a first PUSCH and a second PUSCH;

[0440] The first PUSCH includes at least one PUSCH associated with first spatial information, the second PUSCH includes at least one PUSCH associated with second spatial information, and the first spatial information is different from the second spatial information.

[0441] In some embodiments, the MCS mapping relationship corresponding to the first PUSCH is the same as or different from the MCS mapping relationship corresponding to the second PUSCH.

[0442] In some embodiments, the MCS index corresponding to the first PUSCH is the same as or different from the MCS index corresponding to the second PUSCH.

[0443] In some embodiments, the MCS index indication information includes first MCS index indication information and second MCS index indication information;

[0444] The first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the second MCS index indication information is used to determine the MCS index corresponding to the second PUSCH.

[0445] In some embodiments, the MCS index indication information includes first MCS index indication information;

[0446] The first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the first MCS index indication information and the first offset value are used to determine the MCS index corresponding to the second PUSCH.

[0447] In some embodiments, the value of the MCS index corresponding to the second PUSCH is the sum of the value of the MCS index corresponding to the first PUSCH and the first offset value.

[0448] In some embodiments, the transmission scheme of the channel includes spatial division multiplexing (SDM) or single frequency network (SFN).

[0449] The second sending module 1101 is used to execute the steps related to sending executed by the terminal device in the above embodiments.

[0450] In some embodiments, the apparatus further includes a second receiving module 1102 configured to execute the steps related to reception executed by the terminal device in each of the above embodiments.

[0451] In some embodiments, the apparatus provided by the embodiments of the present application includes a second sending module 1101, which supports executing all the sending steps performed by the network device in each of the above embodiments.

[0452] In some embodiments, the apparatus provided by the embodiments of the present application includes multiple second sending modules 1101, and the multiple second sending modules 1101 respectively support the execution of part of the sending steps performed by the network device in each of the above embodiments.

[0453] In some embodiments, the steps performed by different second sending modules 1101 are completely the same, partially the same, or completely different.

[0454] In some embodiments, the apparatus provided by the embodiments of the present application includes a second receiving module 1102, which supports executing all the receiving steps performed by the network device in each of the above embodiments.

[0455] In some embodiments, the apparatus provided by the embodiments of the present application includes multiple second receiving modules 1102, and the multiple second receiving modules 1102 respectively support executing part of the receiving steps performed by the network device in each of the above embodiments.

[0456] In some embodiments, the steps performed by different second receiving modules 1102 are completely the same, partially the same, or completely different.

[0457] In some embodiments, the apparatus provided by the embodiments of the present application includes a second processing module 1103, which is used to perform one or more operations of encoding, modulating, demodulating, and decoding on the channel.

[0458] In summary, the apparatus provided in the embodiments of the present application supports determining different MCS mapping relationships for channels with different numbers of transmission layers. Compared to related technologies that use the same MCS mapping table design regardless of the number of transmission layers of the channel, the apparatus provided in the present application supports determining more accurate and appropriate MCS information for channels with different numbers of transmission layers, thereby improving the demodulation performance of the channel, improving the coverage and transmission quality of the channel, and improving the communication efficiency of the communication system.

[0459] It should be noted that the device provided in the above embodiment is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0460] Regarding the device in this embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method and will not be elaborated here.

[0461] Figure 12 shows a schematic structural diagram of a communication device (terminal device or network device) provided in some exemplary embodiments of the present application. The communication device 1200 includes: a processor 1201, a receiver 1202, a transmitter 1203, a memory 1204 and a bus 1205.

[0462] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules. In some embodiments, the processor 1201 can be used to implement the functions and steps of the above-mentioned determination module 1011 and / or the first processing module 1014 and / or the second processing module 1103.

[0463] Receiver 1202 and transmitter 1203 can be implemented as a communication component, which can be a communication chip. In some embodiments, receiver 1202 can be used to implement the functions and steps of first receiving module 1012 and / or second receiving module 1102 described above. In some embodiments, transmitter 1203 can be used to implement the functions and steps of first transmitting module 1013 and / or second transmitting module 1101 described above.

[0464] The memory 1204 is connected to the processor 1201 via a bus 1205. The memory 1204 may be used to store at least one instruction, and the processor 1201 may be used to execute the at least one instruction to implement each step in the above method embodiment.

[0465] In addition, the memory 1204 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. Volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random-access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0466] In some embodiments, the receiver 1202 receives signals / data independently, or the processor 1201 controls the receiver 1202 to receive signals / data, or the processor 1201 requests the receiver 1202 to receive signals / data, or the processor 1201 cooperates with the receiver 1202 to receive signals / data.

[0467] In some embodiments, the transmitter 1203 independently sends signals / data, or the processor 1201 controls the transmitter 1203 to send signals / data, or the processor 1201 requests the transmitter 1203 to send signals / data, or the processor 1201 cooperates with the transmitter 1203 to send signals / data.

[0468] In an exemplary embodiment of the present application, a computer-readable storage medium is also provided, in which at least one program is stored. The at least one program is loaded and executed by the processor to implement the method for determining the MCS mapping information provided by the above-mentioned various method embodiments.

[0469] In an exemplary embodiment of the present application, a chip is also provided, which includes a programmable logic circuit and / or program instructions. When the chip runs on a communication device, it is used to implement the method for determining the MCS mapping information provided by the above-mentioned various method embodiments.

[0470] In an exemplary embodiment of the present application, a computer program product is further provided. When the computer program product is executed on a processor of a computer device, the computer device executes the above-mentioned method for determining MCS mapping information.

[0471] In an exemplary embodiment of the present application, a computer program is further provided. The computer program includes computer instructions. A processor of a computer device executes the computer instructions, so that the computer device executes the above-mentioned method for determining MCS mapping information.

[0472] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0473] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A method for determining modulation and coding scheme MCS information, characterized in that: The method is performed by a terminal device, and the method includes: Determine the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship; Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

2. The method according to claim 1, characterized in that Before determining the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship, the method further includes: Receiving MCS mapping indication information, where the MCS mapping indication information is used to indicate the MCS mapping relationship; The determining the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship includes: Based on the transmission parameter information and the MCS mapping indication information, the MCS information of the channel is determined.

3. The method according to claim 1 or 2, characterized in that: The first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship; The second mapping relationship includes one or more of the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, and the fourth MCS mapping relationship; Among them, the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

4. The method according to claim 3, characterized in that The MCS mapping indication information includes first indication information, where the first indication information is used to indicate that the channel is transmitted in a precoding manner, and the MCS mapping relationship includes a mapping relationship associated with the transmission of the channel in a precoding manner.

5. The method according to claim 4, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the second indication information, determining the MCS information of the channel based on the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the third indication information, determining the MCS information of the channel based on the fourth MCS mapping relationship; The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode.

6. The method according to claim 4, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, determining the MCS information of the channel based on the first MCS mapping relationship or the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, determining the MCS information of the channel based on the second MCS mapping relationship or the fourth MCS mapping relationship; The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode; The value of the fourth indication information is used to indicate the MCS mapping relationship.

7. The method according to claim 6, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information and the fourth indication information, and the value of the fourth indication information is the first value, determining the MCS information of the channel based on the first MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information and the fourth indication information, and the value of the fourth indication information is the second value, determining the MCS information of the channel based on the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the first value, determining the MCS information of the channel based on the second MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the fourth MCS mapping relationship.

8. The method according to claim 2 or 5 or 6 or 7, characterized in that: In the third MCS mapping relationship, when the MCS index is 17, the target bit rate is 438.

9. The method according to claim 2 or 5 or 6 or 7, characterized in that: In the fourth MCS mapping relationship, when the MCS index is 21, the target bit rate is 438; and / or, when the MCS index is 22, the target bit rate is 466; and / or, when the MCS index is 23, the target bit rate is 517.

10. The method according to claim 6 or 7, characterized in that: The fourth indication information is carried by radio resource control RRC signaling, or by medium access control control element MAC CE, or by downlink control information DCI.

11. The method according to any one of claims 5 to 7, characterized in that: The second indication information and / or the third indication information is carried by radio resource control RRC signaling.

12. The method according to claim 11, characterized in that The second indication information and the third indication information are carried by the same RRC signaling, or the second indication information and the third indication information are carried by different RRC signaling.

13. The method according to any one of claims 4 to 7, characterized in that: The first indication information is carried by one or more of radio resource control RRC signaling, medium access control control element MAC CE, and downlink control information DCI.

14. The method according to claim 13, characterized in that The first indication information is set in information 3-transmission precoding parameter msg3-transformPrecoder, or in information A-transmission precoding parameter msgA-TransformPrecoder, or in the transmission precoding parameter transformPrecoder in the physical uplink shared channel-configuration parameter pusch-Config, or in the transmission precoding parameter transformPrecoder in the configuration grant configuration parameter configuredGrantConfig.

15. The method according to any one of claims 1 to 14, characterized in that: The method further comprises: Based on the MCS index indication information, the MCS index corresponding to the channel is determined, where the MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

16. The method according to claim 15, characterized in that The determining the MCS information of the channel based on the transmission parameter information and the MCS mapping relationship includes: Determine MCS information of the channel based on the transmission parameter information, the MCS mapping relationship and the MCS index; The MCS information includes one or more of a modulation order, a target code rate, and a frequency efficiency.

17. The method according to claim 15 or 16, characterized in that The MCS index indication information is carried by downlink control information DCI.

18. The method according to any one of claims 1 to 17, characterized in that: The channel includes one physical uplink shared channel PUSCH or at least two PUSCHs.

19. The method according to claim 18, characterized in that The at least two PUSCHs include a first PUSCH and a second PUSCH; The first PUSCH includes at least one PUSCH associated with first spatial information, the second PUSCH includes at least one PUSCH associated with second spatial information, and the first spatial information is different from the second spatial information.

20. The method according to claim 19, characterized in that The MCS mapping relationship corresponding to the first PUSCH is the same as or different from the MCS mapping relationship corresponding to the second PUSCH.

21. The method according to claim 19 or 20, characterized in that The MCS index corresponding to the first PUSCH is the same as or different from the MCS index corresponding to the second PUSCH.

22. The method according to claim 21, characterized in that The MCS index indication information includes first MCS index indication information and second MCS index indication information; The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the second MCS index indication information.

23. The method according to claim 21, characterized in that The MCS index indication information includes first MCS index indication information; The MCS index corresponding to the first PUSCH is determined based on the first MCS index indication information, and the MCS index corresponding to the second PUSCH is determined based on the first MCS index indication information and a first offset value.

24. The method according to claim 23, characterized in that The value of the MCS index corresponding to the second PUSCH is the sum of the value of the MCS index corresponding to the first PUSCH and the first offset value.

25. The method according to any one of claims 18 to 24, characterized in that: The transmission scheme of the channel includes space division multiplexing SDM or single frequency network SFN.

26. A method for determining modulation coding scheme MCS information, characterized in that: The method is performed by a network device, and the method includes: Sending transmission parameter information, where the transmission parameter information and the MCS mapping relationship are used to determine the MCS information of the channel; The MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, wherein the first mapping relationship includes the transmission parameter The number information indicates the MCS information corresponding to the case where the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

27. The method according to claim 26, characterized in that The method further comprises: Send MCS mapping indication information, where the MCS mapping indication information is used to indicate the MCS mapping relationship.

28. The method according to claim 26 or 27, characterized in that The first mapping relationship includes a first MCS mapping relationship and / or a second MCS mapping relationship; The second mapping relationship includes one or more of the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship, and the fourth MCS mapping relationship; Among them, the first MCS mapping relationship, the second MCS mapping relationship, the third MCS mapping relationship and the fourth MCS mapping relationship are different from each other.

29. The method according to claim 28, characterized in that The MCS mapping indication information includes first indication information, where the first indication information is used to indicate that the channel is transmitted in a precoding manner, and the MCS mapping relationship is a mapping relationship associated with the transmission of the channel in a precoding manner among multiple MCS mapping relationships.

30. The method according to claim 29, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the second indication information, the MCS information of the channel is determined based on the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information and the third indication information, the MCS information of the channel is determined based on the fourth MCS mapping relationship; The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode in multiple MCS mapping relationships.

31. The method according to claim 29, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information, and the fourth indication information, the MCS information of the channel is determined based on the first MCS mapping relationship or the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, the MCS information of the channel is determined based on the second MCS mapping relationship or the fourth MCS mapping relationship; The second indication information is used to indicate a first orthogonal amplitude modulation mode, the third indication information is used to indicate a second orthogonal amplitude modulation mode, the first orthogonal amplitude modulation mode is different from the second orthogonal amplitude modulation mode, and the MCS mapping relationship includes a mapping relationship associated with the first orthogonal amplitude modulation mode and / or the second orthogonal amplitude modulation mode in a plurality of MCS mapping relationships; The value of the fourth indication information is used to indicate the MCS mapping relationship.

32. The method according to claim 31, characterized in that When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information and the fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the first MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the second indication information and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the third MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the first value, the MCS information of the channel is determined based on the second MCS mapping relationship; When the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the MCS mapping indication information includes the first indication information, the third indication information and the fourth indication information, and the value of the fourth indication information is the second value, the MCS information of the channel is determined based on the fourth MCS mapping relationship.

33. The method according to claim 27, 30, 31 or 32, characterized in that: In the third MCS mapping relationship, when the MCS index is 17, the target bit rate is 438.

34. The method according to claim 27, 30, 31 or 32, characterized in that: In the fourth MCS mapping relationship, when the MCS index is 21, the target bit rate is 438; and / or, when the MCS index is 22, the target bit rate is 466; and / or, when the MCS index is 23, the target bit rate is 517.

35. The method according to claim 31 or 32, characterized in that The fourth indication information is carried by radio resource control RRC signaling, or by medium access control control element MAC CE, or by downlink control information DCI.

36. The method according to any one of claims 30 to 35, characterized in that The second indication information and / or the third indication information is carried by radio resource control RRC signaling.

37. The method according to claim 36, characterized in that The second indication information and the third indication information are carried by the same RRC signaling, or the second indication information and the third indication information are carried by different RRC signaling.

38. The method according to any one of claims 29 to 32, characterized in that: The first indication information is carried by one or more of radio resource control RRC signaling, medium access control control element MAC CE, and downlink control information DCI.

39. The method according to claim 38, characterized in that The first indication information is set in information 3-transmission precoding parameter msg3-transformPrecoder, or in information A-transmission precoding parameter msgA-TransformPrecoder, or in the transmission precoding parameter transformPrecoder in the physical uplink shared channel-configuration parameter pusch-Config, or in the transmission precoding parameter transformPrecoder in the configuration grant configuration parameter configuredGrantConfig.

40. The method according to any one of claims 26 to 39, characterized in that: The method further comprises: MCS index indication information is sent, where the MCS index indication information is used to determine the MCS index corresponding to the channel, where the MCS index corresponding to the channel refers to the MCS index corresponding to the channel in the MCS mapping relationship.

41. The method according to claim 40, characterized in that The MCS information of the channel is determined based on the transmission parameter information, the MCS mapping relationship and the MCS index; The MCS information includes one or more of a modulation order, a target code rate, and a frequency efficiency.

42. The method according to claim 40 or 41, characterized in that The MCS index indication information is carried by downlink control information DCI.

43. The method according to any one of claims 26 to 42, characterized in that: The channel includes one physical uplink shared channel PUSCH or at least two PUSCHs.

44. The method according to claim 43, characterized in that The at least two PUSCHs include a first PUSCH and a second PUSCH; The first PUSCH includes at least one PUSCH associated with first spatial information, the second PUSCH includes at least one PUSCH associated with second spatial information, and the first spatial information is different from the second spatial information.

45. The method according to claim 44, characterized in that The MCS mapping relationship corresponding to the first PUSCH is the same as or different from the MCS mapping relationship corresponding to the second PUSCH.

46. ​​The method according to claim 44 or 45, characterized in that The MCS index corresponding to the first PUSCH is the same as or different from the MCS index corresponding to the second PUSCH.

47. The method according to claim 46, characterized in that The MCS index indication information includes first MCS index indication information and second MCS index indication information; The first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the second MCS index indication information is used to determine the MCS index corresponding to the second PUSCH.

48. The method according to claim 47, characterized in that The MCS index indication information includes first MCS index indication information; The first MCS index indication information is used to determine the MCS index corresponding to the first PUSCH, and the first MCS index indication information and the first offset value are used to determine the MCS index corresponding to the second PUSCH.

49. The method according to claim 48, characterized in that The value of the MCS index corresponding to the second PUSCH is the sum of the value of the MCS index corresponding to the first PUSCH and the first offset value.

50. The method according to any one of claims 43 to 49, characterized in that The transmission scheme of the channel includes space division multiplexing SDM or single frequency network SFN.

51. A device for determining MCS mapping information, characterized in that: The device comprises: A determination module, used to determine MCS information of a channel based on the transmission parameter information and the MCS mapping relationship; Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

52. A device for determining MCS mapping information, characterized in that: The device comprises: A second sending module is used to send transmission parameter information, where the transmission parameter information and the MCS mapping relationship are used to determine the MCS information of the channel; Among them, the MCS mapping relationship includes a first mapping relationship and / or a second mapping relationship, the first mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is 1, and the second mapping relationship includes the MCS information corresponding to the case where the transmission parameter information indicates that the number of transmission layers of the channel is greater than or equal to 2, and the first mapping relationship is different from the second mapping relationship.

53. A terminal device, characterized in that: The terminal device comprises: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; The processor is configured to load and execute the executable instructions to implement the method for determining the MCS mapping information as described in any one of claims 1 to 25.

54. A network device, characterized in that: The network equipment includes: A processor; a transceiver connected to the processor; a memory for storing executable instructions of the processor; The processor is configured to load and execute the executable instructions to implement the method for determining the MCS mapping information as described in any one of claims 26 to 50.

55. A computer-readable storage medium, characterized in that: The readable storage medium stores executable instructions, which are loaded and executed by a processor to implement the method for determining MCS mapping information as described in any one of claims 1 to 25 or 26 to 50.

56. A chip, characterized in that: The chip includes a programmable logic circuit or a program, and the chip is used to implement the method for determining the MCS mapping information as described in any one of claims 1 to 25 or 26 to 50.

57. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. The processor of a computer device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for determining the MCS mapping information as described in any one of claims 1 to 25 or 26 to 50.

58. A computer program, characterized in that The computer program includes computer instructions, and the processor of the computer device executes the computer instructions, so that the computer device executes the method for determining MCS mapping information as described in any one of claims 1 to 25 or 26 to 50.

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