CN111756474B

CN111756474B - Data transmission method and device

Info

Publication number: CN111756474B
Application number: CN201910250454.7A
Authority: CN
Inventors: 马蕊香; 官磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-03-29
Filing date: 2019-03-29
Publication date: 2022-05-17
Anticipated expiration: 2039-03-29
Also published as: WO2020200053A1; CN111756474A

Abstract

The application provides a data transmission method and device. According to the method, the terminal equipment can receive first information, and determine a Modulation and Coding Scheme (MCS) table used by data according to a scrambling identifier of the first information and target information, wherein the first information is used for scheduling the data, and the scrambling identifier of the first information comprises MCS-C-RNTI or high-priority-C-RNTI. And receiving or transmitting the data, wherein the MCS used by the data is determined according to the first information and the MCS table. With the above method, the terminal device can determine the MCS table used by the data according to the scrambling identifier of the first information and the target information, and can determine the MCS used by the data according to the table and the first information, thereby realizing the determination of the MCS.

Description

Data transmission method and device

Technical Field

The present application relates to the field of mobile communications technologies, and in particular, to a data transmission method and apparatus.

Background

During mobile communication, a network device (e.g., a base station) may transmit Downlink Control Information (DCI) to a User Equipment (UE) (e.g., a terminal), where the DCI may be carried on a Physical Downlink Control Channel (PDCCH) and may be used to indicate information of a data channel, for example, a Physical Uplink Shared Channel (PUSCH) for carrying uplink data or a Physical Downlink Shared Channel (PDSCH) for carrying downlink data. The DCI may also be used to indicate a Modulation and Coding Scheme (MCS) employed by the data channel, such that the user equipment can determine the MCS from the DCI to achieve correct reception of the data.

At present, in order to ensure the transmission reliability of high priority services, it is proposed to introduce identifiers in the physical layer to distinguish these high priority services, and the network device scrambles the DCI used for scheduling the high priority services through these identifiers, so that these services can be processed preferentially during the transmission process, wherein the high priority traffic includes ultra-reliable and low-latency communications (URLLC) traffic, etc., these identifiers for identifying the high priority traffic are, for example, modulation and coding scheme-cell radio network temporary identifier (MCS-C-RNTI), or a newly defined radio network temporary identity, such as a high priority radio network temporary identity highpriority-C-RNTI, or called a very high reliability and very low time delay radio network temporary identifier URLLC-C-RNTI.

However, if the DCI is scrambled by the newly introduced physical layer identifier, the original method for determining the MCS according to the DCI is not applicable, and the user equipment cannot accurately determine the MCS, resulting in a failure in receiving data.

Disclosure of Invention

The application provides a data transmission method and device, which are used for determining an MCS when DCI is scrambled by a newly introduced physical layer identifier.

In a first aspect, the present application provides a data transmission method, which may be implemented by a terminal device (also referred to as a terminal apparatus in the present application). According to the method, terminal equipment can receive first information, and determine a Modulation and Coding Scheme (MCS) table used by data according to a scrambling identifier of the first information and target information, wherein the first information is used for scheduling the data, the scrambling identifier of the first information is a modulation and coding scheme cell radio network temporary identifier (MCS-C-RNTI) or a high-priority radio network temporary identifier (high-priority-C-RNTI), and the high-priority-C-RNTI is used for identifying that the first information is used for scheduling the high-priority data. And receiving or transmitting the data, wherein the MCS used by the data is determined according to the first information and the MCS table.

By adopting the method, when the first information is scrambled by the MCS-C-RNTI or the high-priority-C-RNTI, the terminal equipment can determine the MCS table used by the data according to the scrambling identifier of the first information and the target information, and the MCS used by the data can be determined according to the table and the first information, so that the determination of the MCS can be realized.

In one possible design, the target information may include at least one of the following information: a format of the first information; or, a search space in which the first information is located; or, second information, the second information being used for indicating the MCS table; or, a value of a bit field in the first information is used to indicate a priority of the data. Thereby, flexible indication of the MCS table can be achieved according to the first information and any of the above target information.

In one possible design, the target information may include a format of the first information, and when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identity of the first information and the target information, if the format of the first information is a first DCI format, the terminal device may determine that the MCS table is a first MCS table; and/or, if the format of the first information is a second DCI format, the terminal device may determine that the MCS table is a second MCS table; wherein the first DCI format is different from the second DCI format, and the first MCS table is different from the second MCS table.

In a possible design, the target information includes information of a search space where the first information is located, and when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identifier of the first information and the target information, if the search space where the first information is located is a search space specific to a user, the terminal device may determine that the MCS table is a second MCS table; and/or, if the search space in which the first information is located is a common search space, the terminal device may determine that the MCS table is a first MCS table, where the first MCS table and the second MCS table are different.

In a possible design, the target information includes information of a search space where the first information is located, and when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identifier of the first information and the target information, if an index of the search space is greater than or equal to an index threshold, the terminal device may determine that the MCS table used by the data is a second MCS table; and/or, if the index of the search space is smaller than an index threshold, the terminal device may determine that the MCS table is a first MCS table, where the first MCS table and the second MCS table are different.

In one possible design, the target information includes second information indicating the MCS table, and when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identity of the first information and the target information, if the second information indicates a second MCS table, the terminal device may determine that the MCS table is the second MCS table; and/or, if the second information indicates a first MCS table, the terminal device may determine that the MCS table is the first MCS table, wherein the first MCS table and the second MCS table are different.

In one possible design, the terminal device may use a default MCS table as the MCS table in case the terminal device determines that the second information is not received. The default MCS table may be the first MCS table or the second MCS table. So that the MCS table can be determined more flexibly.

In one possible design, the second information may be configuration information carried in higher layer signaling.

In a possible design, the target information includes a value of a bit field in the first information, and when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identifier of the first information and the target information, the terminal device may determine that the MCS table is a first MCS table if the value of the bit field in the first information is less than or equal to a first threshold; and/or, if the value of the bit field in the first information is greater than the first threshold, the terminal device may determine that the MCS table is a second MCS table, where the first MCS table and the second MCS table are different.

In a possible design, the target information includes a value of a bit field in the first information, and when determining a modulation and coding scheme, MCS, table used by the data according to a scrambling identifier of the first information and the target information, the terminal device may determine that the MCS table is a first MCS table if the value of the bit field in the first information is greater than or equal to a second threshold; and/or, if the value of the bit field in the first information is smaller than the second threshold, the terminal device may determine that the MCS table is a second MCS table, where the first MCS table and the second MCS table are different. The first and second thresholds may be the same or different.

The network device and the terminal device can determine the MCS table by adopting any of the above design methods, so that the determination mode of the MCS table can be agreed between the network device and the terminal device, and the problem that data cannot be received due to the fact that the MCS tables determined by the network device and the terminal device are different is avoided. In addition, compared with the direct fixed use of a certain MCS table, the method can switch among a plurality of MCS tables according to the scrambling identifier and the target information of the first information, thereby meeting different reliability requirements of data with different service priorities and improving the utilization rate of resources. In addition, the above methods can be used alternatively or in combination with each other when indicating the MCS table, thereby realizing flexible indication of the MCS table.

In one possible design, the first information may include an MCS indication field, which may include N bits, N being less than log₂M and M are the number of MCS in the MCS table. The terminal equipment can also determine the MCS used by the data from the MCS table according to the MCS indication field. Therefore, the length of the MCS indication domain in the first information can be reduced to reduce the bit number of the DCI, and under the condition that the DCI occupies the same time-frequency resource, the transmission code rate can be reduced, so that the purpose of improving the DCI transmission reliability is achieved.

In a possible design, when determining the MCS used by the data from the MCS table according to the MCS indication field, if the value of the MCS indication field is m, the terminal device may determine that the MCS used by the data is the n + m +1 th MCS in the MCS table; or, if the value of the MCS indicator field is m, the terminal device may determine that the MCS used by the data is the m × n + 1-th MCS in the MCS table, where n is a non-negative integer. In an implementation, the value of n may be indicated by the network device through the third information. The third information may be configuration information carried in higher layer signaling.

In one possible design, the terminal device may also select from 2 of the MCS table^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Therein, 2^NThe candidate MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device 102 through the configuration information, and at this time, the terminal device may further receive fourth information from the network device, where the fourth information is used to indicate the candidate MCS.

In one possible design, the fourth information may be configuration information carried in higher layer signaling.

For example, the 2^ N candidate MCSs may be 2 with consecutive indices in the MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCSs may be MCSs with discontinuous indexes in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

In one possible design, the spectral efficiency of the first MCS table is higher than the spectral efficiency of the second MCS table, so that the transmission reliability of data transmitted using the second MCS table is higher. Illustratively, the first MCS table is an MCS table with a highest modulation and coding scheme of 64QAM and a relatively high spectral efficiency, such as table 1 defined by the protocol. The second MCS table is an MCS table having a highest modulation coding scheme of 64QAM and relatively low spectral efficiency, as defined in table 3 of the protocol.

Additionally, the above methods may also be implemented by a network device. Based on the method, the network device may send the first information, and receive or send data, where the first information is used to schedule the data, a scrambling identifier of the first information is a modulation and coding scheme cell radio network temporary identifier MCS-C-RNTI or a high-priority radio network temporary identifier highpriority-C-RNTI, and the highpriority-C-RNTI is used to identify that the first information is used to schedule the high-priority data. The MCS used by the data is determined according to the first information and the MCS table.

In one possible design, the target information may include a format of the first information, and the MCS table may be a first MCS table if the format of the first information is a first DCI format; and/or, if the format of the first information is a second DCI format, the MCS table may be a second MCS table; wherein the first DCI format is different from the second DCI format, and the first MCS table is different from the second MCS table.

In a possible design, the target information includes information of a search space where the first information is located, and if the search space where the first information is located is a search space specific to a user, the MCS table may be a second MCS table; and/or if the search space in which the first information is located is a common search space, the MCS table may be a first MCS table, where the first MCS table is different from a second MCS table.

In a possible design, the target information includes information of a search space where the first information is located, and if an index of the search space is greater than or equal to an index threshold, the MCS table used by the data may be a second MCS table; and/or, if the index of the search space is smaller than the index threshold, the MCS table may be a first MCS table, wherein the first MCS table and the second MCS table are different.

In one possible design, the target information includes second information indicating the MCS table, and the MCS table may be a second MCS table if the second information indicates the second MCS table; and/or if the second information indicates a first MCS table, the MCS table may be the first MCS table, wherein the first MCS table and the second MCS table are different.

In one possible design, the terminal device may further use a default MCS table as the MCS table in case the network device does not send the second information. The default MCS table may be the first MCS table or the second MCS table. So that the MCS table can be indicated more flexibly.

In a possible design, the target information includes a value of a bit field in the first information, and the MCS table may be a first MCS table if the value of the bit field in the first information is less than or equal to a first threshold; and/or, if the value of the bit field in the first information is greater than the first threshold, the MCS table may be a second MCS table, where the first MCS table and the second MCS table are different.

In a possible design, the target information includes a value of a bit field in the first information, and the MCS table may be a first MCS table if the value of the bit field in the first information is greater than or equal to a second threshold; and/or, if the value of the bit field in the first information is smaller than the second threshold, the MCS table may be a second MCS table, where the first MCS table and the second MCS table are different. The first and second thresholds may be the same or different.

In one possible design, the first information may include an MCS indication field, which may include N bits, N being less than log₂M and M are the number of MCS in the MCS table. The MCS indication field may be used to indicate the MCS used by the data from the MCS table. Accordingly, the length of the MCS instruction field in the first information can be reduced to reduce the code rate.

In a possible design, if the value of the MCS indication field is m, the MCS used by the data may be the (n + m + 1) th MCS in the MCS table; or, if the value of the MCS indication field is m, the MCS used by the data may be the m × n +1 MCS in the MCS table, where n is a non-negative integer. In implementation, the network device may further send third information to the terminal device, where the third information is used to indicate a value of n. The third information may be configuration information carried in higher layer signaling.

In one possible design, the MCS indication field may also be used to indicate the MCS used by the data from among 2^ N alternative MCSs of the MCS table, where N is a positive integer. Therein, 2^NThe alternative MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device 102 through the configuration information, and at this time, the network device may further send fourth information to the terminal device, where the fourth information is sentThe information is used to indicate an alternative MCS.

Illustratively, said 2^NThe candidate MCS can be 2 with continuous index in the MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCSs may be MCSs with discontinuous indexes in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

The first MCS table may be a high spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the first MCS table may be denoted by 'QAM64 HighSE'. The second MCS table may be a low spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the second MCS table may be denoted as 'QAM64 LowSE'.

In a second aspect, the present application provides a data transmission method. When the method is executed by a terminal device, the terminal device may receive first information, where the first information may be used to schedule data, and a value of a bit field in the first information is used to indicate a priority of the data. The terminal device may further determine an MCS table used by the data according to the value of the bit field, and receive or transmit the data, where the MCS used by the data is determined according to the first information and the MCS table.

By adopting the method, when the value of the bit field in the first information indicates the data of the high-priority service, the terminal equipment can determine the MCS table used by the data according to the value of the bit field in the first information, and can determine the MCS used by the data according to the MCS table and the first information, thereby realizing the determination of the MCS.

In one possible design, the terminal device may determine that the MCS table is the first MCS table when a value of a bit field in the first information is less than or equal to a first threshold; and/or the terminal device may determine that the MCS table is the second MCS table when the value of the bit field in the first information is greater than the first threshold.

In one possible design, the terminal device may determine that the MCS table is the first MCS table when a value of a bit field in the first information is greater than or equal to a second threshold; and/or the terminal device may determine that the MCS table is the second MCS table when the value of the bit field in the first information is smaller than the second threshold.

Additionally, the method may also be performed by a network device. The network device may send first information, where the first information may be used to schedule data, a value of a bit field in the first information may be used to indicate a priority of the data, and the value of the bit field may also be used to determine an MCS table used by the data. The network device may also receive or transmit the data, wherein the MCS used by the data is determined based on the first information and the MCS table.

In one possible design, when a value of a bit field in the first information is less than or equal to a first threshold, the MCS table may be a first MCS table; and/or when the value of the bit field in the first information is greater than the first threshold, the MCS table may be a second MCS table.

In one possible design, when a value of a bit field in the first information is greater than or equal to a second threshold, the MCS table may be a first MCS table; and/or when the value of the bit field in the first information is smaller than the second threshold, the MCS table may be a second MCS table.

The first MCS table may be a high spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the first MCS table may be denoted as 'QAM64 HighSE'. The second MCS table may be a low spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the second MCS table may be denoted as 'QAM64 LowSE'.

In a third aspect, the present application provides a communication apparatus, which may be configured to perform the steps executed by the terminal device in the first aspect or any possible design of the second aspect, and the communication apparatus may implement the functions in the methods through a hardware structure, a software module, or a combination of a hardware structure and a software module. For example, when constituted by software modules, the communication means may comprise a communication module, a processing module and a data transmission module coupled to each other. When formed of hardware components, the communication device may include a transceiver, a memory, and a processor, among others, coupled to each other.

In the method of the first aspect, a communications module of the communications apparatus may be configured to receive first information, where the first information is used for scheduling data, and a scrambling identifier of the first information is a modulation and coding scheme cell radio network temporary identifier MCS-C-RNTI or a high-priority radio network temporary identifier highpriority-C-RNTI, where the highpriority-C-RNTI is used to identify that the first information is used for scheduling high-priority data. The processing module may be configured to determine a modulation and coding scheme, MCS, table to be used by the data according to the scrambling identity of the first information and the target information. The data transmission module may be configured to receive or transmit the data, wherein the MCS used by the data is determined according to the first information and the MCS table.

In one possible design, the target information may include a format of the first information, a search space in which the first information is located, the second information, or some or all of values of a bit field in the first information, where the value of the bit field may be used to indicate a priority of the data.

In a possible design, if the target information includes a format of the first information, when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identifier of the first information and the target information, the processing module may determine that the MCS table is a first MCS table when the format of the first information is a first DCI format; and/or the processing module may determine that the MCS table is a second MCS table when the format of the first information is a second DCI format.

In a possible design, if the target information includes information of a search space where the first information is located, when determining a modulation and coding scheme, MCS, table used by the data according to the scrambling identifier of the first information and the target information, the processing module may determine that the MCS table is a second MCS table when the search space where the first information is located is a search space specific to a user; and/or the processing module may determine that the MCS table is the first MCS table when the search space in which the first information is located is the common search space.

In a possible design, if the target information includes information of a search space where the first information is located, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processing module may determine the MCS table used by the data as the second MCS table when an index of the search space is greater than or equal to an index threshold; and/or the processing module may determine that the MCS table is the first MCS table when the index of the search space is less than an index threshold.

In a possible design, if the target information includes the second information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identity of the first information and the target information, the processing module may determine that the MCS table is the second MCS table when the second information indicates the second MCS table; and/or the processing module may determine that the MCS table is the first MCS table when the second information indicates the first MCS table.

In one possible design, the processing module may determine a default MCS table as the MCS table in case that it is determined that the second information is not received, the default MCS table may be the first MCS table or the second MCS table.

In a possible design, if the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processing module may determine that the MCS table is the first MCS table when the value is less than or equal to a first threshold; and/or the processing module may determine that the MCS table is the second MCS table when the value is greater than the first threshold.

In a possible design, if the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processing module may determine that the MCS table is the first MCS table when the value is greater than or equal to a second threshold; and/or the processing module may determine that the MCS table is a second MCS table when the value is smaller than the second threshold.

In one possible design, the first information may further include an MCS indication field including N bits, N being less than log₂M, M is the number of MCS in the MCS table, the processing module can also be used to determine the MCS used by the data from the MCS table according to the MCS indication field, so as to implement the receiving and sending of the data according to the MCS.

In one possible design, when determining the MCS, if the value of the MCS indication field is m, the processing module may use the (n + m + 1) th MCS in the MCS table as the MCS, or the processing module may use the (n + m + 1) th MCS in the MCS table as the MCS. Wherein n is a non-negative integer.

In one possible design, the value of n may be preconfigured, or the communication module may be further configured to receive third information indicating the value of n. The third information may be configuration information carried in higher layer signaling.

In one possible design, the processing module may also select from 2 of the MCS table based on the MCS indication field^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Wherein 2^NThe candidate MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device through the configuration information, and at this time, the communication module may be further configured to receive fourth information sent by the network device, where the fourth information is used to indicate the candidate MCS.

In one possible design, said 2^NThe candidate MCS can be 2 with continuous index in the MCS table^NAn alternative MCS. Or, 2 above^NThe alternative MCS canThe MCS table is an MCS with discontinuous index, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

In the method according to the second aspect, the communication module of the communication device may be configured to receive first information, where the first information is used for scheduling data, and a value of a bit field in the first information is used to indicate a priority of the data. The processing module can be used for determining an MCS table used by the data according to the value of the bit field in the first information; the value of the bit field is used for indicating the priority of the service to which the data belongs. The data transmission module may be configured to receive or transmit the data, wherein the MCS used by the data is determined according to the first information and the MCS table.

In a possible design, when determining the MCS table used by the data according to a value of a bit field in the first information, the processing module may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is less than or equal to a first threshold; and/or the processing module determines that the MCS table is a second MCS table when the value of the bit field in the first information is greater than the first threshold.

In a possible design, when determining the MCS table used by the data according to a value of a bit field in the first information, the processing module may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is greater than or equal to the second threshold; and/or the processing module determines that the MCS table is a second MCS table when the value of the bit field in the first information is smaller than the second threshold.

In addition, when the above communication apparatus is implemented by hardware components, the steps performed by the above processing module may be performed by a processor, and the steps performed by the above communication module and/or data transmission module may be performed by a transceiver.

In a fourth aspect, the present application provides a communication apparatus, which may be used to perform the steps executed by the network device in the first aspect or any possible design of the second aspect, and the communication apparatus may implement the functions in the methods through a hardware structure, a software module, or a combination of a hardware structure and a software module. For example, when constituted by software modules, the communication means may include a communication module and a data transmission module coupled to each other. When formed of hardware components, the communication device may include a transceiver, a memory, and a processor, among others, coupled to each other.

In the method of the first aspect, a communication module of the communication apparatus may be configured to send first information, where the first information is used for scheduling data, a scrambling identifier of the first information is a modulation and coding scheme cell radio network temporary identifier MCS-C-RNTI or a high-priority radio network temporary identifier highpriority-C-RNTI, and the highpriority-C-RNTI is used to identify that the first information is used for scheduling high-priority data. The data transmission module may be configured to receive or transmit the data, where the scrambling identifier of the first information and the target information are used to determine an MCS table used by the data, and the MCS used by the data is determined according to the first information and the MCS table.

In one possible design, if the target information includes a format of first information, and the format of the first information is a first DCI format, the MCS table may be a first MCS table; and/or, if the format of the first information is the second DCI format, the MCS table may be a second MCS table.

In a possible design, if the target information includes information of a search space where the first information is located, when the search space where the first information is located is a search space specific to a user, the MCS table may be a second MCS table; and/or, when the search space in which the first information is located is a common search space, the MCS table may be a first MCS table.

In a possible design, if the target information includes information of a search space where the first information is located, when an index of the search space is greater than or equal to an index threshold, the MCS table used by the data may be a second MCS table; and/or the MCS table may be a first MCS table when the index of the search space is less than an index threshold.

In one possible design, if the target information includes the second information, the MCS table may be a second MCS table when the second information indicates the second MCS table; and/or, when the second information indicates the first MCS table, the MCS table may be the first MCS table.

In one possible design, a default MCS table may be used as the MCS table in the case that the second information is not transmitted, and the default MCS table may be the first MCS table or the second MCS table.

In a possible design, if the target information includes a value of a bit field in the first information, when the value is less than or equal to a first threshold, the MCS table may be a first MCS table; and/or, when the value is greater than the first threshold, the MCS table may be a second MCS table.

In a possible design, if the target information includes a value of a bit field in the first information, when the value is greater than or equal to a second threshold, the MCS table may be a first MCS table; and/or, when the value is less than the second threshold, the MCS table may be a second MCS table.

In one possible design, the first information may further include an MCS indication field, where the MCS indication field includes N bits, and N is less than log₂M, M is the number of MCS in the MCS table, and the MCS indication field can be used to determine the MCS used by the data from the MCS table.

In one possible design, if the value of the MCS field is m, the n + m +1 th MCS in the MCS table may be used as the MCS, or the n × m +1 th MCS in the MCS table may be used as the MCS. Wherein n is a non-negative integer.

In one possible design, the value of n may be preconfigured, or the communication module may be further configured to send third information indicating the value of n. The third information may be configuration information carried in higher layer signaling.

In one possible design, the MCS indication field may also be used for 2 from the MCS table^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Therein, 2^NThe candidate MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device through the configuration information, and at this time, the communication module may be further configured to send fourth information to the terminal device, where the fourth information is used to indicate the candidate MCS.

In one possible design, said 2^NThe candidate MCS can be 2 with continuous index in the MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCSs may be MCSs with discontinuous indexes in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

When the method shown in fig. 2 is executed, the communication module may be configured to send first information, where the first information is used to schedule data, and a value of a bit field in the first information is used to determine an MCS table used by the data. The data transmission module may be configured to receive or transmit data, wherein the MCS used by the data is determined according to the first information and the MCS table.

In one possible design, the MCS table may be a first MCS table if a value of a bit field in the first information is less than or equal to a first threshold; and/or, if the value of the bit field in the first information is greater than the first threshold, the MCS table may be a second MCS table.

In one possible design, the MCS table may be a first MCS table if a value of a bit field in the first information is greater than or equal to a second threshold; and/or, if the value of the bit field in the first information is smaller than the second threshold, the MCS table may be a second MCS table.

In addition, when the above communication device is implemented by a hardware component, the steps performed by the above communication module and/or data transmission module may be performed by a transceiver.

In a fifth aspect, the present application provides a communication system, which may include the communication apparatus of the third aspect and/or the communication apparatus of the fourth aspect.

In a sixth aspect, the present application provides a computer storage medium having stored therein instructions (or programs) which, when invoked for execution on a computer, cause the computer to perform a method as set forth in the first aspect or any one of the possible designs of the first aspect, or for performing a method as set forth in the second aspect or any one of the possible designs of the second aspect.

In a seventh aspect, the present application provides a computer program product, which may comprise instructions for causing a computer to perform a method as described in the first aspect or any one of the possible designs of the first aspect, or for performing a method as described in the second aspect or any one of the possible designs of the second aspect, when the computer program product is run on a computer.

In an eighth aspect, the present application provides a chip or chip system comprising a chip, which chip may comprise a processor. The chip may also include a memory and/or a communication module. The chip may be adapted to perform a method as described in the first aspect or any one of the possible designs of the first aspect above, or adapted to perform a method as described in the second aspect or any one of the possible designs of the second aspect above. The chip system may be formed by the above chip, and may also include the above chip and other discrete devices, such as a communication module.

The advantageous effects of the second to eighth aspects and their possible designs described above may be referred to the description of the advantageous effects of the method described in the first aspect and any of its possible designs.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system provided in the present application;

fig. 2 is a schematic flow chart of a data transmission method provided in the present application;

fig. 3 is a schematic flow chart of another data transmission method provided in the present application;

fig. 4 is a schematic structural diagram of a communication device provided in the present application;

fig. 5 is a schematic structural diagram of another communication device provided in the present application;

fig. 6 is a schematic structural diagram of another communication device provided in the present application;

fig. 7 is a schematic structural diagram of another communication device provided in the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings. The particular methods of operation in the method embodiments may also be applied to apparatus embodiments or system embodiments.

The following explains the present application with respect to terms:

at least one means one, or more than one, i.e., including one, two, three, and more than one.

Plural means two, or more than two, that is, two, three and more than two are included.

Carrying may mean that a certain message is used to carry certain information or data, or that a certain message is composed of certain information.

Coupling refers to indirect coupling or communication connection between devices, units or modules, and may be electrical, mechanical or other forms for information interaction between the devices, units or modules.

DCI: the method can be used for bearing scheduling information of uplink and downlink data. The uplink and downlink data include uplink data and/or downlink data, the downlink data may be carried on the PDSCH, and the uplink data may be carried on the PUSCH. The scheduling information in the DCI may include data time domain resource indication information, frequency domain resource indication information, and a modulation and coding scheme MCS used by a data channel. These pieces of information are all necessary information for receiving uplink and downlink data, such as time domain or frequency domain resource indication information, which is used to determine time domain and frequency domain resources of received data, a modulation and coding scheme MCS is used to determine a code rate used by data transmitted on the time frequency resources, and a user can determine the size of the data, or the bit number of the data, according to the code rate and the size of the indicated time frequency resources, so that the data can be correctly received.

And (3) wireless network temporary identification: when sending DCI, the network device can scramble DCI through the radio network temporary identifier, the terminal device can descramble DCI according to the identifier, and the identifier can realize user identification or identify the special function of DCI. The radio network temporary identifier commonly used at present includes a cell radio network temporary identifier (C-RNTI), an MCS-C-RNTI, and a configured and scheduled radio network temporary identifier (CS-RNTI). The network equipment can allocate a cell radio network temporary identifier (C-RNTI) for each terminal equipment, and when the DCI is scrambled by using the C-RNTI, the terminal equipment can descramble by using the C-RNTI of the terminal equipment, so that the DCI sent to the terminal equipment by the network equipment is received. When the DCI is scrambled by the MCS-C-RNTI, the MCS table with higher reliability can be identified. The CS-RNTI is mainly an identifier used in activation and deactivation of a semi-persistent scheduling (SPS) PDSCH and an uplink non-scheduling indication.

DCI format: in this application, DCI with different DCI contents and/or different DCI bit numbers is referred to as DCI with different formats. Currently, the DCI formats for data scheduling mainly include four formats, where DCI format 1_0 and DCI format 0_0 are both DCI formats for scheduling PUSCH. Wherein DCI format 1_1 and DCI format 0_1 are both DCI formats for scheduling PDSCH. In order to support high priority services, a new DCI format may be introduced, which is referred to as DCI format 1_2, and the DCI format may be determined by configuration information to be a specific number of bits, which may be smaller than the number of bits of all existing DCI formats, and may be used to schedule high priority services.

Search space of DCI: the search space is some candidate positions indicated by the network device to the terminal device for possible DCI transmission, and the terminal device receives DCI by detecting whether there is corresponding DCI in the search space. If a DCI is received, the search space of the DCI is the search space of this DCI. The search space is divided into a Common Search Space (CSS) and a user-specific search space (USS). The search spaces have an identification (e.g., index) and each search space corresponds to a type, either a common search space or a user-specific search space, depending on the type configuration information received for each search space. The type of configuration information may be carried in the configuration information.

Configuration information: the present application refers to indication information sent by a network device through a high layer signaling, where the high layer signaling may refer to a signaling sent by a high layer protocol layer, and the high layer protocol layer is at least one protocol layer above a physical layer. The higher layer protocol layer may specifically include at least one of the following protocol layers: a Medium Access Control (MAC) layer, a Radio Link Control (RLC) layer, a Packet Data Convergence Protocol (PDCP) layer, a Radio Resource Control (RRC) layer, and a non-access stratum (NAS) layer. After the terminal device accesses the network, the terminal device receives configuration information, including information for PDCCH, PDSCH, SPS PDSCH, uplink scheduling-free, etc., so that subsequent data and the network can communicate normally.

SPS PDSCH: the network device sends an activation PDCCH for activation, the activation PDCCH indicates time-frequency resource information and MCS information, and the like, and then the network device does not send the PDCCH any more, and sends data according to the period indicated by the configuration information. Therefore, for the first SPS PDSCH, there is corresponding DCI, i.e., SPS PDSCH with scheduling information, and the following SPS PDSCH is SPS PDSCH without scheduling information, because it is transmitted periodically.

Uplink scheduling-free: the uplink exemption scheduling includes 2 types, and type 1 means that all data communication information is configured by the network device through the configuration information indication terminal device, and then the network device directly adopts the configuration to transmit data when transmitting data without additionally transmitting any PDCCH indication. Type 2 refers to SPS PUSCH, and the procedure of downlink SPS PDSCH is similar, but this is the user equipment transmitting data to the network equipment, and reference may be made to the above description of SPS PDSCH.

PUSCH with/without transform precoding (transform precoding): there are 2 kinds of waveforms for the PUSCH, the PUSCH with transform precoding corresponds to a single carrier orthogonal frequency division multiplexing (SC-OFDM) waveform, the PUSCH without transform precoding corresponds to a cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) waveform, and specifically, which waveform can be indicated by the network device through configuration information.

In addition, it should be understood that in the embodiment of the present application, "and/or" describes an association relationship of associated objects, which means that three relationships may exist, for example, a and/or B may mean: a alone, both A and B, and B alone, where A, B may be singular or plural. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, or c, may represent: a, b, c, a and b, a and c, b and c, or a, b and c, wherein a, b and c can be single or multiple.

Hereinafter, embodiments of the present application will be described in detail with reference to the drawings. First, a wireless communication system provided in an embodiment of the present application is introduced, a transmission resource indication method provided in the present application is applicable to the system, then the transmission resource indication method provided in the embodiment of the present application is introduced, and finally a communication apparatus provided in the embodiment of the present application is introduced.

As shown in fig. 1, a wireless communication system 100 provided by the embodiment of the present application may include a terminal device 101 and a network device 102.

It should be understood that the wireless communication system 100 provided in the embodiment of the present application is applicable to both the low frequency scenario (sub 6G) and the high frequency scenario (above 6G). The application scenarios of the wireless communication System 100 provided in the embodiment of the present application include, but are not limited to, a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, a LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile telecommunications System (Universal Mobile telecommunications System, UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a future fifth Generation (5, 5) wireless communication System, or a new NR (5G) communication System.

The terminal device 101 shown above may be a User Equipment (UE), a terminal (terminal), a Mobile Station (MS), a mobile terminal (mobile terminal), and the like, and the terminal device 101 is capable of communicating with one or more network devices of one or more communication systems and receiving network services provided by the network devices, where the network devices include, but are not limited to, the network device 102 shown in the figure. The terminal device 101 in the embodiment of the present application may be, for example, a mobile phone (or referred to as "cellular" phone), a computer with a mobile terminal, and the like, and the terminal device 101 may also be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted mobile apparatus. The terminal apparatus 101 may also be a communication chip having a communication module.

The network device 102 may include a Base Station (BS), or a radio resource management device for controlling a base station, and the network device 102 may be a relay station (relay device), an access point, an in-vehicle device, a wearable device, and a base station in a future 5G network, a base station in a future evolved Public Land Mobile Network (PLMN) network, or an NR base station, and the like, and the embodiment of the present application is not limited. The network device 102 may also be a communication chip having a communication module.

The data transmission method provided by the embodiment of the application can be realized by the communication system shown in fig. 1, and the transmission of the high-priority service data can be realized by the method. In the following, a data transmission method provided in the embodiment of the present application is described, and as shown in fig. 2, the method may include the following steps:

s101: the network device 102 sends first information, where the first information is used for scheduling data, and a scrambling identifier of the first information is MCS-C-RNTI or high-priority radio network temporary identifier highher-priority-C-RNTI. Wherein the Higher-priority-C-RNTI is used to identify that the first information is used to schedule high-priority data. Specifically, the first information may be DCI transmitted by the network device 102 to the terminal device 101, where the DCI may be used to schedule uplink and downlink data between the network device 102 and the terminal device 101.

It should be understood that the high priority data referred to by S101 includes data of high priority traffic, such as data of URLLC traffic. The network device 102 may scramble the first information with the MCS-C-RNTI identity or the highher-priority-C-RNTI identity to indicate that the data is high priority data. Here, the high-priority-C-RNTI identity is merely an example, and the present application is not limited to scrambling DCI only with the high-priority-C-RNTI as a new identity to indicate high-priority data, and if URLLC-RNTI or another identity is introduced as the new identity, it should be understood that the high-priority-C-RNTI in the embodiments of the present application may be replaced with URLLC-RNTI or the another identity.

In addition, while identifying the service priority by the scrambling identifier, the network device 102 may also indicate, in the first information, a further priority under the service for which the data is of the same priority, through a bit field. For example, if a DCI is scrambled by a highher-priority-C-RNTI, it is determined that the first information schedules high priority data and there is a bit field in the DCI indicating further refined priority in such high priority data.

S102: the terminal device 101 receives the first information;

s103: the terminal device 101 determines the MCS table used by the data according to the scrambling identifier of the first information and the target information.

S104: and data transmission is carried out between the network equipment 102 and the terminal equipment 101, wherein the MCS used by the data is determined according to the first information and the MCS table. Specifically, performing data transmission includes the network device 102 sending downlink data to the terminal device 101, at this time, the network device 102 sends the data, and the terminal device 101 receives the data. Alternatively, performing data transmission includes terminal device 101 sending uplink data to network device 102, in which case terminal device 101 sends the data and network device 102 receives the data.

With the above method, when the first information is scrambled by MCS-C-RNTI or high-priority-C-RNTI, the terminal device 101 can determine the MCS table used by the data according to the scrambling identifier of the first information and the target information, and can determine the MCS used by the data according to the table and the first information, so that the terminal device 101 can determine the MCS.

For example, the target information related to S103 may include a format of the first information, a search space in which the first information is located, the second information, or some or all of values of a bit field in the first information. Wherein the second information is used for indicating the MCS table. This second information is configuration information, so the MCS table may be indicated by the network device 102 to the terminal device 101. The value of the bit field in the first information may be used to indicate the priority of the service to which the data scheduled by the DCI belongs, for example, a 2-bit (bit) bit field is used in the DCI, and the value is configured to be 0, 1, 2, or 3, which has indicated that the priority of the service is 0, 1, 2, or 3, and the values of 0, 1, 2, or 3 sequentially correspond to the priorities from low to high, or the priorities from high to low.

According to the method of the embodiment of the present application, the network device 102 may indicate a certain MCS table according to the scrambling identifier of the first information and the target information, and accordingly, the terminal device 101 may determine the MCS table according to the scrambling identifier of the first information and the target information based on the method provided by the embodiment of the present application, so that a determination manner of the MCS table may be agreed between the network device 102 and the terminal device 101, and it is avoided that the data cannot be received due to different MCS tables determined by the network device 102 and the terminal device 101. Further, compared with the direct fixed use of a certain MCS table, the method can switch among a plurality of MCS tables according to the scrambling identifier and the target information of the first information, thereby meeting different reliability requirements of data with different service priorities and improving the utilization rate of resources.

The following specifically describes several methods for determining an MCS table used by data according to a scrambling identifier of first information and target information, which are provided in the embodiments of the present application, by taking the first information as DCI as an example. It should be appreciated that the network device 102 may determine the MCS table in the same way, and/or the network device 102 may first select the MCS table for transmitting data according to the method, then reversely derive the scrambling identity and the target information of the first information according to the MCS table, and transmit DCI using the scrambling identity and the target information.

It should be understood that the schemes listed herein are merely illustrative of embodiments of the application and should not be construed as encompassing only the several implementations listed below.

In the first mode, the MCS table is determined according to the scrambling identifier of the DCI and the format of the DCI.

Specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the format of the first information is the first DCI format, the terminal device 101 determines that the MCS table is the first MCS table; or, if the format of the first information is the second DCI format, the terminal device 101 determines that the MCS table is the second MCS table. Wherein the first DCI format and the second DCI format are different DCI formats.

Or, specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the format of the first information is the first DCI format, the terminal device 101 determines that the MCS table is the second MCS table; or, if the format of the first information is the second DCI format, the terminal device 101 determines that the MCS table is the first MCS table. Wherein the first DCI format and the second DCI format are different DCI formats.

For example, when the network device 102 allocates the MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the DCI format is 1_1, the terminal device 101 may determine the MCS table as the first MCS table. Alternatively, when the network device 102 allocates the MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the DCI format is 1_2, the terminal device 101 may determine the MCS table as the second MCS table.

In addition, when the network device 102 scrambles the DCI with the high-priority-C-RNTI and the format of the DCI is 1_1, the terminal device 101 may determine the MCS table as the first MCS table. Alternatively, when the network device 102 scrambles the DCI with the Higher-priority-C-RNTI and the format of the DCI is 1_2, the terminal device 101 may determine the MCS table as the second MCS table.

By the method of the first mode, after the priority of the service is determined according to the DCI scrambling identifier, different MCS tables are determined by combining different formats of DCIs. First, using such a rule, it is possible to agree on the determination method of the MCS table between the network device 102 and the terminal device 101, and avoid that data cannot be received due to the MCS tables determined by the network device 102 and the terminal device 101 being different. Secondly, compared with the direct fixed use of a certain MCS table, the method can switch among a plurality of MCS tables according to the DCI scrambling identifier and the DCI format, thereby achieving different reliability requirements of data with different service priorities and improving the utilization rate of resources.

And the second mode is to determine the MCS table according to the scrambling identifier of the DCI and the search space of the DCI.

In one possible implementation, the determination of the MCS table may be implemented according to a scrambling identity of the DCI and whether a search space of the DCI is a user-specific search space or a common search space. Specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the search space where the DCI is located is a search space specified by the user, the terminal device 101 determines that the MCS table is the second MCS table; or, if the search space in which the DCI is located is the common search space, the terminal device 101 determines that the MCS table is the first MCS table.

Alternatively, in one possible implementation, the determination of the MCS table may be implemented according to the scrambling identity of the DCI and whether the search space of the DCI is a user-specific search space or a common search space. Specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the search space where the DCI is located is a user-specific search space, the terminal device 101 determines that the MCS table is the first MCS table; or, if the search space in which the DCI is located is the common search space, the terminal device 101 determines that the MCS table is the second MCS table.

For example, when the network device 102 allocates an MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the search space in which the DCI is located is a user-specific search space, the terminal device 101 may determine the MCS table as the second MCS table. Alternatively, when the network device 102 allocates the MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the search space in which the DCI is located is the common search space, the terminal device 101 may determine that the MCS table is the first MCS table.

In addition, when the network device 102 scrambles the DCI with the high-priority-C-RNTI and the search space in which the DCI is located is the user-specific search space, the terminal device 101 may determine that the MCS table is the second MCS table. Alternatively, when the network device 102 scrambles the DCI with the high-priority-C-RNTI and the search space in which the DCI is located is the common search space, the terminal device 101 may determine that the MCS table is the first MCS table.

In another possible implementation manner, the determination of the MCS table may also be implemented according to a scrambling identifier of the DCI and an index of a search space of the DCI. Specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the index of the search space where the DCI is located is greater than or equal to the index threshold, the terminal device 101 determines that the MCS table is the second MCS table; or, if the index of the search space where the DCI is located is smaller than the index threshold, the terminal device 101 determines that the MCS table is the first MCS table. Wherein the first MCS table and the second MCS table are different MCS tables. In an implementation, the index threshold may be indicated to the terminal device 101 by the network device 102 through configuration information, or the index threshold may be defined by a protocol or determined in a preconfigured manner.

In another possible implementation manner, the determination of the MCS table may also be implemented according to a scrambling identifier of the DCI and an index of a search space of the DCI. Specifically, when the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, if the index of the search space where the DCI is located is less than or equal to the index threshold, the terminal device 101 determines that the MCS table is the second MCS table; or, if the index of the search space where the DCI is located is greater than the index threshold, the terminal device 101 determines that the MCS table is the first MCS table. Wherein the first MCS table and the second MCS table are different MCS tables. In an implementation, the index threshold may be indicated to the terminal device 101 by the network device 102 through configuration information, or the index threshold may be defined by a protocol or determined in a preconfigured manner.

For example, the index of the search space where the DCI is located may be represented by i, where i is 0, 1, 2, … …, and N, where N is the number of search spaces, k is an index threshold, and k is 0, 1, 2, … …, and N. When the network device 102 scrambles the DCI with the MCS-C-RNTI and the index i of the search space in which the DCI is located is greater than or equal to k, the terminal device 101 may determine that the MCS table used by the data is the second MCS table. Alternatively, when the network device 102 allocates the MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the index i of the search space in which the DCI is located is smaller than k, the terminal device 101 may determine that the MCS table is the first MCS table.

In addition, when the network device 102 scrambles the DCI with the high-priority-C-RNTI and the index i of the search space in which the DCI is located is greater than or equal to k, the terminal device 101 may determine that the MCS table is the first MCS table. Alternatively, when the network device 102 scrambles the DCI with the Higher-priority-C-RNTI and the index i of the search space in which the DCI is located is smaller than k, the terminal device 101 may determine that the MCS table is the second MCS table.

It should be noted that, when the index of the search space in which the DCI is located is equal to the index threshold, the MCS table determined by the terminal device may be the same as the MCS table when the index of the search space in which the DCI is located is smaller than the index threshold, or the same as the MCS table when the index of the search space in which the DCI is located is larger than the index threshold.

By the method described in the second embodiment, after the priority of the service is determined according to the DCI scrambling identifier, different MCS tables are determined in combination with the type or index of the search space where the DCI is located. First, using such a rule, the determination manner of the MCS table can be agreed between the network device 102 and the terminal device 101, and it is avoided that data cannot be received due to different MCS tables determined by the network device 102 and the terminal device 101. Secondly, compared with the direct fixed use of a certain MCS table, the method can switch among a plurality of MCS tables according to the DCI scrambling identifier and the type or index of the search space where the DCI is located, thereby achieving different reliability requirements of data with different service priorities and improving the utilization rate of resources.

And determining the MCS table according to the scrambling identifier of the DCI and the second information.

Specifically, when the second information indicates the second MCS table, the terminal device 101 determines that the second MCS table is the MCS table used by the data. Alternatively, when the second information indicates the first MCS table, the terminal device 101 determines that the first MCS table is an MCS table used by the data.

In an implementation, the second information may include an index of the MCS table, e.g., the second information may carry an index (e.g., index 0) of the first MCS table to indicate the first MCS table. Alternatively, the second information may be a specific bit in the configuration information, and a value of the specific bit may be used to indicate the MCS table, for example, when the specific bit is configured to be 0, the second information may be used to indicate the first MCS table, and when the specific bit is configured to be 1, the second information may be used to indicate the second MCS table; alternatively, the second information may carry a name or flag of the MCS table to indicate the MCS table. For example, when the name and flag of the MCS table carried by the second information is the name or flag of the first MCS table, the MCS table used by the data is determined to be the first MCS table, or when the name and flag of the MCS table carried by the second information is the name or flag of the second MCS table, the MCS table used by the data is determined to be the second MCS table.

Illustratively, when the network device 102 allocates the MCS-C-RNTI for the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the second information sent by the network device 102 to the terminal device 101 indicates the first MCS table, the terminal device 101 may determine the MCS table to be the first MCS table. Alternatively, when the network device 102 allocates the MCS-C-RNTI for the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the second information transmitted by the network device 102 to the terminal device 101 indicates the second MCS table, the terminal device 101 may determine the MCS table as the second MCS table.

When the network device 102 scrambles the DCI with the high-priority-C-RNTI and the second information transmitted by the network device 102 to the terminal device 101 indicates the first MCS table, the terminal device 101 may determine the MCS table as the first MCS table. Alternatively, when the network device 102 scrambles the DCI with the highher-priority-C-RNTI and the second information transmitted by the network device 102 to the terminal device 101 indicates the second MCS table, the terminal device 101 may determine the MCS table as the second MCS table.

In addition, when the network device 102 scrambles the DCI with the MCS-C-RNTI or the high-priority-C-RNTI, if the second information indicates the second MCS table, the terminal device 101 determines that the second MCS table is the MCS table used by the data. If the terminal device 101 determines that the second information sent by the network device 102 is not received, the terminal device 101 may default to use the first MCS table as the MCS table used by the data; in addition, when the network device 102 scrambles the DCI with the MCS-C-RNTI or the high-priority-C-RNTI, if the second information indicates the first MCS table, the terminal device 101 determines that the first MCS table is the MCS table used by the data. If terminal apparatus 101 determines that the second information sent by network apparatus 102 is not received, terminal apparatus 101 may default to the second MCS table as the MCS table used by the data.

By the method described in the third embodiment, after the priority of the service is determined according to the DCI scrambling identifier, different MCS tables are determined according to the second information. First, using such a rule, the determination manner of the MCS table can be agreed between the network device 102 and the terminal device 101, and it is avoided that data cannot be received due to different MCS tables determined by the network device 102 and the terminal device 101. Secondly, compared with the direct fixed use of a certain MCS table, the switching among a plurality of MCS tables can be performed according to the DCI scrambling identifier and the second information, so that different reliability requirements of data with different service priorities are met, and the utilization rate of resources is improved.

And fourthly, determining an MCS table according to the scrambling identifier of the DCI and the value of the bit field in the DCI. Wherein, the value of the bit field can be used to indicate the priority of the service.

Specifically, when the value of the bit field in the DCI is less than or equal to the first threshold, the terminal device 101 determines that the MCS table is the first MCS table. When the value of the bit field in the DCI is greater than the first threshold, the terminal device 101 determines that the MCS table is a second MCS table. The first threshold value may be indicated to the terminal 101 by the network device 102 via configuration information, may be defined by a protocol, or may be determined in a preconfigured manner.

It should be noted that, when the value of the bit field in the DCI is equal to the first threshold, the MCS table determined by the terminal device may be the same as the MCS table when the value of the bit field in the DCI is greater than the first threshold, or the MCS table when the value of the bit field in the DCI is less than the first threshold.

For example, if the value of the bit field in the DCI is 0, 1, 2, or 3, the first threshold may be 1. When the network device 102 allocates MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the value of the bit field in the DCI is 0 or 1, the terminal device 101 may determine that the MCS table is the first MCS table. Alternatively, when the network device 102 allocates the MCS-C-RNTI to the terminal device 101 and scrambles the DCI with the MCS-C-RNTI, and the value of the bit field in the DCI is 2 or 3, the terminal device 101 may determine that the MCS table is the second MCS table.

When the network device 102 scrambles the DCI with the high-priority-C-RNTI and the value of the bit field in the DCI is 0 or 1, the terminal device 101 may determine that the MCS table is the first MCS table. Alternatively, when the network device 102 scrambles the DCI with the Higher-priority-C-RNTI and the value of the bitfield in the DCI is 2 or 3, the terminal device 101 may determine that the MCS table is the second MCS table.

And/or when the value of the bit field in the DCI is greater than or equal to the second threshold, the terminal device 101 determines that the MCS table is the first MCS table. When the value of the bit field in the DCI is smaller than the second threshold, the terminal device 101 determines that the MCS table is a second MCS table. The value of the second threshold may be the same as the value of the first threshold, or may be different from the value of the first threshold.

It should be noted that, when the value of the bit field in the DCI is equal to the second threshold, the MCS table determined by the terminal device may be the same as the MCS table when the value of the bit field in the DCI is greater than the second threshold, or the MCS table when the value of the bit field in the DCI is less than the second threshold.

By the method of the fourth mode, after the priority of the service is determined according to the DCI scrambling identifier, different MCS tables are determined by combining the value of the bit field in the DCI. First, using such a rule, the determination manner of the MCS table can be agreed between the network device 102 and the terminal device 101, and it is avoided that data cannot be received due to different MCS tables determined by the network device 102 and the terminal device 101. Secondly, compared with the method of directly and fixedly using a certain MCS table, the method can switch among a plurality of MCS tables according to the DCI scrambling identifier and the value of the bit field in the DCI, thereby meeting different reliability requirements of data with different service priorities and improving the utilization rate of resources.

As shown in fig. 3, the method may include the steps of:

s201: the network device 102 transmits first information, which is used to schedule data. Specifically, the first information may be DCI transmitted by the network device 102 to the terminal device 101, where the DCI may be used to schedule uplink and downlink data between the network device 102 and the terminal device 101.

S202: the terminal apparatus 101 receives the first information.

S203: the terminal device 101 determines an MCS table used by the data according to a value of a bit field in the first information, where the value of the bit field may be used to indicate a priority of a service to which the data belongs.

S204: and data transmission is carried out between the network equipment 102 and the terminal equipment 101, wherein the MCS used by the data is determined according to the first information and the MCS table. Specifically, performing data transmission includes the network device 102 sending downlink data to the terminal device 101, at this time, the network device 102 sends the data, and the terminal device 101 receives the data. Alternatively, performing data transmission includes terminal device 101 sending uplink data to network device 102, in which case terminal device 101 sends the data and network device 102 receives the data.

Specifically, when the value of the bit field in the DCI is less than or equal to the first threshold, the MCS table may be determined to be the first MCS table. When the value of the bit field in the DCI is greater than the first threshold, the terminal device 101 determines that the MCS table is a second MCS table. The manner of setting the first threshold value here may refer to the description in the fourth manner described above.

For example, if the value of the bit field in the DCI is 0, 1, 2, or 3, the first threshold may be 1. When the network device 102 transmits DCI for the terminal device 101 and the value of the bit field in the DCI is 0 or 1, the terminal device 101 may determine that the MCS table is the first MCS table. Alternatively, when the network device 102 transmits DCI for the terminal device 101 and the value of the bit field in the DCI is 2 or 3, the terminal device 101 may determine that the MCS table is the second MCS table.

Or, when the value of the bit field in the DCI is greater than or equal to the second threshold, the MCS table may be determined to be the first MCS table. When the value of the bit field in the DCI is smaller than the second threshold, the terminal device 101 determines that the MCS table is a second MCS table. Here, the second threshold value may be set in the manner described in the fourth mode, and the first threshold value may be the same as or different from the second threshold value.

It should be understood that the first MCS table and the second MCS table according to the above embodiments are different MCS tables.

For example, for a DCI scheduling downlink data or scheduling uplink data not configured with transform precoding, in the embodiment of the present application, a first MCS table determined according to the DCI may be configured as shown in table one, and/or a second MCS table determined according to the DCI may be configured as shown in table two. It can be seen that the number of rows of the medium-low code rate (or called target code rate) included in the second MCS table is relatively large, and the lower the code rate, the higher the transmission reliability, so that the second MCS table can be more used in the situation where the requirement on the transmission reliability is relatively high. The second MCS table may be a low spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the second MCS table is marked as 'QAM64 LowSE'. The first MCS table may be a high spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the first MCS table may be denoted as 'QAM64 HighSE'.

Watch 1

Watch two

In addition, for DCI configured with uplink data that is precoded by conversion, in the embodiment of the present application, a first MCS table determined according to the DCI may be configured as shown in table three, and/or a second MCS table determined according to the DCI may be configured as shown in table four. The second MCS table may be a low spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the second MCS table may be denoted as 'QAM64 LowSE'. The first MCS table may be a high spectral efficiency MCS table with a highest modulation scheme of 64QAM, and a name or a flag of the first MCS table may be denoted as 'QAM64 HighSE'.

Watch III

Watch four

In the above embodiments, the first DCI format may be DCI format 1_1, and the second DCI format may be DCI format 1_ 2.

By the method, different MCS tables are determined according to the relation between the value of the bit field in the DCI and the first threshold or the second threshold. First, using such a rule, the determination manner of the MCS table can be agreed between the network device 102 and the terminal device 101, and it is avoided that data cannot be received due to different MCS tables determined by the network device 102 and the terminal device 101. Secondly, compared with the direct fixed use of a certain MCS table, the switching among a plurality of MCS tables can be performed according to the value of the bit field in the DCI, so that different reliability requirements of data with different service priorities are met, and the utilization rate of resources is improved.

In the implementation of the application, after the MCS table is determined according to the scrambling identifier of the first information and the target information, the specifically used MCS can be further determined according to the MCS table and the first information. Specifically, the MCS may be determined from the MCS table according to the MCS indication field in the first information.

The number of MCSs that can be indicated by the MCS indication field in the first information coincides with the number of MCSs in the MCS table,if the bit number of the MCS indication field is M, the number of MCSs that can be indicated by the MCS indication field in the first information is 2^MThe MCS number in the MCS table is 2^MWhere M is a positive integer, so that one MCS, that is, an MCS used by the terminal device 101 and the network device 102 to transmit data, can be uniquely determined from the MCS table according to the MCS indication field. For example, if the determined MCS table is shown in table one and the value of the MCS indication field in the DCI is 0, the MCS with the MCS index of 1 shown in table one may be used as the used MCS, and the terminal device 101 and the network device 102 may transmit data according to the MCS.

For example, the length of the MCS indication field in the first information may also be reduced to reduce the bit number of the DCI, and the transmission code rate may be reduced to achieve the purpose of improving the reliability of DCI transmission when the DCI occupies the same time-frequency resource, where the number of MCSs that can be indicated by the MCS indication field in the first information is smaller than the number of MCSs in the MCS table, for example, the bit number of the MCS indication field is N, and the number of MCSs that can be indicated by the MCS indication field in the first information is 2^NN is less than log₂M, M is the number of MCS in the MCS table, i.e. 2^NLess than M. By adopting the method provided by the embodiment of the application, even if the indicating bit number is not enough to indicate a large MCS table, the determination of the MCS can be realized, so that the network equipment 102 and the terminal equipment 101 can be in agreement with the determination mode of the MCS, and the normal transmission of data is ensured.

In a possible implementation manner, if the value of the MCS indication field is m, where m is a non-negative integer, the (n + m + 1) th MCS in the MCS table may be used as the MCS used for transmitting data, where n is a non-negative integer.

For example, if the MCS table of the data determined according to the foregoing embodiment is as shown in table one, when n takes 0, the terminal apparatus 101 may determine the m +1 th MCS in table one as the MCS used for transmitting the data. In this case, if the MCS includes 4 bits, and if the value of the corresponding MCS indication field is "00" for the 4 bits, the 1 st MCS in the first table may be determined as the MCS used for transmitting data, and if the value of the corresponding MCS indication field is "11" for the 4 bits, the 4 th MCS in the first table may be determined as the MCS used for transmitting data.

It should be understood that the value of n above may be indicated to the terminal device 101 by the network device 102 through configuration information, for example, the network device 102 sends third information to the terminal device 101, where the third information is used to indicate the value of n. Optionally, the third indication information may be configuration information. Alternatively, the value of n may be determined in a manner defined by the protocol.

Where the value of n indicates which MCS to start with in the determined MCS table. For example, the determined MCS table is table one. The terminal device determines that n is equal to 4 in the above manner, and may indicate a 4 th line start indication in the MCS table. In this case, assuming that the MCS includes 4 bits, and if the 4 bits correspond to "0000", the value of the corresponding MCS indication field is m equal to 0, the (n + m + 1) -4 +0+ 1) -5 MCS in the first table may be determined as the MCS used for the transmission data, and if the 4 bits correspond to "1111", the value of the corresponding MCS indication field is m equal to 15, the (n + m + 1) -4 +15+ 1) -20 MCS in the first table may be determined as the MCS used for the transmission data.

Alternatively, if the value of the MCS indicator field is m, the nth × m +1 MCS in the MCS table may be used as the MCS for transmitting data. For example, if the MCS table is as shown in table one, when n takes 1, the terminal device 101 may determine the m +1 th MCS in table one as the MCS used for transmitting data.

For example, if the MCS table of the data determined according to the foregoing embodiment is as shown in table one, when n takes 2, the terminal apparatus 101 may determine the m +1 th MCS in table one as the MCS used for transmitting the data. In this case, if the MCS includes 2 bits, and if the value of the corresponding MCS indication field is "00" corresponding to the 2 bits is m equal to 0, the 1 st MCS in the first table may be determined as the MCS to be used for transmission data, and if the value of the corresponding MCS indication field is "01" corresponding to the 2 bits is m equal to 1, the 3 rd MCS in the first table may be determined as the MCS to be used for transmission data. It can be seen that n is used to indicate the interval between the index identifications of the MCS indicated by the values of two adjacent MCS indication fields. For example, in the above example, the value of the MCS indication field is m ═ 0 and the value of the MCS indication field is m ═ 1, which are two adjacent MCS indication field values, the indicated MCSs are respectively the 1 st MCS and the 3 rd MCS, and the interval is 2, that is, n.

In another possible implementation manner, the value of the MCS table 2 may also be selected according to the value of the MCS indication field^NThe MCS used for transmitting data is selected from the candidate MCSs. For example, if the MCS table is shown in Table one, 2^NThe candidate MCS comprises MCS with MCS index of 0-15 in the MCS table, and when the value of the MCS indication field is m, 2 of the MCS table can be selected^NThe m +1 th MCS of the candidate MCSs is used as the MCS for transmitting data. The mth candidate MCS is denoted by an MCS index m after the MCS index starts to be numbered from 1 in all candidate MCSs.

Specifically, 2 of the MCS table^NThe candidate MCS may be 2 with consecutive indices in the table of MCSs^NAnd (4) an MCS. For example, 2 for minimum/maximum MCS index in MCS table^NAnd the MCS is used as an alternative MCS. Specifically, the information may be indicated to the terminal device 101 by the network device 102 through configuration information, or may be determined in a protocol definition manner, and dynamic signaling is not required to be introduced, thereby reducing overhead.

Alternatively, 2 of MCS table^NThe candidate MCS may be a MCS table in which the minimum MCS index is p and the MCS index difference between any two adjacent candidate MCSs is 2 of q^NAnd each MCS, p and q are non-negative integers. For example, when p is 1 and q is 2, the MCS indices of the candidate MCSs in table one are: 1. 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29 and 31.

The values of p and q referred to above may be indicated to the terminal device 101 by the network device 102 through configuration information, or may be determined by protocol definition. Dynamic signaling is not required to be introduced, thereby reducing overhead.

It should be understood that the process of determining the MCS described above may be performed by the network device 102 and/or the terminal device 101, including but not limited to determining the MCS table by the network device 102 and/or the terminal device 101 according to the first information and the target information, and determining the MCS by the network device 102 and/or the terminal device 101 according to the MCS indication field of the first information and the MCS table.

By the method of the embodiment, when the value of the MCS bit field in the DCI is not enough to indicate a relatively large MCS table, a method for determining the MCS of the data according to the MCS bit field is specified, and the consistent understanding of the base station and the user is ensured; and a certain MCS in the MCS table can be flexibly determined to be the MCS used for data transmission, thereby ensuring the reliability of service transmission and improving the utilization rate of resources.

Based on the same inventive concept as the above method embodiments, the present application embodiment further provides a communication apparatus, which may have the functions of the network device 102 and/or the terminal device 101 in the above method embodiments and may be used to execute the steps executed by the network device 102 and/or the terminal device 101. The functions can be realized by hardware, and can also be realized by software or hardware to execute corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions.

In one possible implementation manner, the communication apparatus 400 shown in fig. 4 may serve as the network device 102 according to the above-mentioned method embodiment, and perform the steps performed by the network device 102 in the above-mentioned method embodiment, for example, perform the actions performed by the network device 102 in the steps shown in S101 and S104, or perform the actions performed by the network device 102 in the steps shown in S201 and S204. As shown in fig. 4, the communication device 400 may include a communication module 401 and a data transmission module 402, wherein the communication module 401 and the data transmission module 402 are coupled to each other. The communication module 401 may be used to support the communication device 400 to perform communication, and the data transmission module 402 may be used to support the communication device to send and receive data.

When the method shown in fig. 1 is executed, the communication module 401 may be configured to send first information, where the first information is used for scheduling data, and a specific manner of setting the first information may refer to the description in the above embodiment of the method. The data transmission module 402 may be configured to receive or transmit the data, where the scrambling identifier of the first information and the target information are used to determine an MCS table used by the data, and the MCS used by the data is determined according to the first information and the MCS table.

For example, the target information may include a format of the first information, a search space in which the first information is located, the second information, or some or all of values of a bit field in the first information, where the value of the bit field may be used to indicate a priority of the data.

If the target information includes a format of the first information, and the format of the first information is a first DCI format, the MCS table may be a first MCS table; and/or, if the format of the first information is the second DCI format, the MCS table may be a second MCS table.

If the target information includes the information of the search space where the first information is located, when the search space where the first information is located is a search space specific to a user, the MCS table may be a second MCS table; and/or, when the search space in which the first information is located is a common search space, the MCS table may be a first MCS table.

If the target information includes information of a search space where the first information is located, when an index of the search space is greater than or equal to an index threshold, the MCS table used by the data may be a second MCS table; and/or the MCS table may be a first MCS table when the index of the search space is less than an index threshold. The setting manner of the index threshold value can refer to the description in the above method embodiment.

If the target information includes the second information, the MCS table may be a second MCS table when the second information indicates the second MCS table; and/or, when the second information indicates the first MCS table, the MCS table may be the first MCS table. The second information may be determined as described in the above method embodiment. In addition, when the second information is not transmitted, a default MCS table may be used as the MCS table, and the default MCS table may be the first MCS table or the second MCS table.

If the target information includes a value of a bit field in the first information, the MCS table may be a first MCS table when the value is less than or equal to a first threshold; and/or, when the value is greater than the first threshold, the MCS table may be a second MCS table. The first threshold value may be set as described in the above method embodiments.

If the target information includes a value of a bit field in the first information, the MCS table may be a first MCS table when the value is greater than or equal to a second threshold; and/or, when the value is less than the second threshold, the MCS table may be a second MCS table. The second threshold value may be set as described in the above embodiment of the method.

The first information may further include an MCS indication field, wherein the MCS indication field includes N bits, N being less than log₂M, M is the number of MCS in the MCS table, and the MCS indication field can be used to determine the MCS used by the data from the MCS table.

If the value of the MCS indication field is m, the (n + m + 1) th MCS in the MCS table may be used as the MCS, or the (n + m + 1) th MCS in the MCS table may be used as the MCS. Wherein n is a non-negative integer. The value of n may be preconfigured, or the communication module 401 may be further configured to send third information indicating the value of n. The third information may be a higher layer signaling, such as configuration information.

In addition, the MCS indication field can also be used for 2 from the MCS table^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Wherein 2^NThe candidate MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device 102 through the configuration information, and at this time, the communication module 401 may further be configured to send fourth information to the terminal device 101, where the fourth information is used to indicate the candidate MCS. Wherein the fourth information may be configuration information carried in higher layer signaling.

Illustratively, said 2^NThe alternative MCS may beIndex continuous 2 in MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCSs may be MCSs with discontinuous indexes in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

The above first MCS table and the second MCS table are different MCS tables. The first MCS table and the second MCS table may be arranged as described in the above method embodiments.

In performing the method shown in fig. 2, the communication module 401 may be configured to send first information, where the first information is used for scheduling data, and a value of a bit field in the first information is used for determining an MCS table used by the data. The specific arrangement of the bit field in the first information can refer to the description of the above method embodiment. The data transmission module 402 is configured to receive or transmit data, wherein the MCS used by the data is determined according to the first information and the MCS table.

If the value of the bit field in the first information is less than or equal to a first threshold, the MCS table may be a first MCS table; and/or, if the value of the bit field in the first information is greater than the first threshold, the MCS table may be a second MCS table. The first threshold value may be set as described in the above method embodiments.

If the value of the bit field in the first information is greater than or equal to a second threshold, the MCS table may be a first MCS table; and/or, if the value of the bit field in the first information is smaller than the second threshold, the MCS table may be a second MCS table. The second threshold value may be set as described in the above embodiment of the method.

As shown in fig. 5, the present embodiment further provides a communication apparatus 500, where the communication apparatus 500 may be used as the terminal device 101 according to the above-mentioned method embodiment, and executes the steps executed by the terminal device 101 in the above-mentioned method embodiment, for example, execute the actions executed by the terminal device 101 in the steps S102 and S103, or execute the actions executed by the terminal device 101 in the steps S202, S203, and S204. As shown in fig. 5, the communication device 500 may include a communication module 501, a processing module 502, and a data transmission module 503, wherein any two of the communication module 501, the processing module 502, and the data transmission module 503 are coupled to each other.

When the method shown in fig. 1 is executed, the communication module 501 may be configured to receive first information, where the first information is used for scheduling data, and the specific manner of setting the first information may refer to the description in the above embodiment section of the method. The processing module 502 may be configured to determine a modulation and coding scheme MCS table used by the data according to the scrambling identity of the first information and the target information. A data transmission module 503, configured to receive or transmit the data, wherein the MCS used by the data is determined according to the first information and the MCS table.

If the target information includes the format of the first information, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine that the MCS table is the first MCS table when the format of the first information is the first DCI format; and/or, the processing module 502 may determine that the MCS table is a second MCS table when the format of the first information is a second DCI format.

If the target information includes the information of the search space where the first information is located, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine that the MCS table is the second MCS table when the search space where the first information is located is a search space specific to the user; and/or the processing module 502 may determine that the MCS table is the first MCS table when the search space in which the first information is located is the common search space.

If the target information includes information of a search space where the first information is located, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine the MCS table used by the data as the second MCS table when the index of the search space is greater than or equal to the index threshold; and/or, the processing module 502 may determine that the MCS table is the first MCS table when the index of the search space is less than the index threshold. The setting manner of the index threshold value can refer to the description in the above method embodiment.

If the target information includes the second information, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine that the MCS table is the second MCS table when the second information indicates the second MCS table; and/or, the processing module 502 may determine that the MCS table is the first MCS table when the second information indicates the first MCS table. The second information may be determined as described in the above method embodiment. In addition, in case that it is determined that the second information is not received, the processing module 502 may determine a default MCS table as the MCS table, where the default MCS table may be the first MCS table or the second MCS table.

If the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine that the MCS table is a first MCS table when the value is less than or equal to a first threshold; and/or the processing module 502 may determine that the MCS table is the second MCS table when the value is greater than the first threshold. The first threshold value may be set as described in the above method embodiments.

If the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processing module 502 may determine that the MCS table is a first MCS table when the value is greater than or equal to a second threshold; and/or the processing module 502 may determine that the MCS table is the second MCS table when the value is smaller than the second threshold. The second threshold value may be set as described in the above embodiment of the method.

The processing module 502 may be further configured to determine an MCS to use when transmitting data according to the first information and the MCS table. Specifically, the first information may further include an MCS indication field, where the MCS indication field includes N bits, and N is less than log₂M, M is the number of MCS in the MCS table, and the processing module 502 is configured to determine the MCS used by the data from the MCS table according to the MCS indication field, so as to implement receiving and transmitting data according to the MCS.

When determining the MCS, if the value of the MCS indication field is m, the processing module 502 may use the (n + m + 1) th MCS in the MCS table as the MCS, or the processing module 502 may use the (n + m + 1) th MCS in the MCS table as the MCS. Wherein n is a non-negative integer. The value of n may be preconfigured, or the communication module 501 may be further configured to receive third information indicating the value of n. The third information may be a higher layer signaling, such as configuration information.

In addition, when determining the MCS, the processing module 502 can further determine the MCS from 2 of the MCS table according to the MCS indication field^NAnd determining the MCS used by the data from the candidate MCSs, wherein N is a positive integer. Therein, 2^NThe candidate MCSs are pre-configured. Or, 2^NThe alternative MCS is indicated by the network device 102 through the configuration information, and at this time, the communication module 501 may be further configured to receive fourth information sent by the network device 102, where the fourth information is used to indicate the alternative MCS. Wherein the fourth information may be configuration information carried in higher layer signaling.

Illustratively, said 2^NThe candidate MCS can be 2 with continuous index in the MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCS may be a discontinuous MCS in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, one of the two adjacent candidate MCSsThe index difference between them is 2.

In performing the method shown in fig. 2, the communication module 501 may be configured to receive first information, which is used for scheduling data. The specific setting manner of the first information can refer to the description in the above method embodiment. The processing module 502 may be configured to determine, according to a value of a bit field in the first information, an MCS table used by the data; the value of the bit field is used for indicating the priority of the service to which the data belongs. The data transmission module 503 may be configured to receive or transmit the data, wherein the MCS used by the data is determined according to the first information and the MCS table. The above first information may refer to the above description of the method embodiment.

When determining the MCS table used by the data according to the value of the bit field in the first information, the processing module 502 may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is less than or equal to the first threshold; and/or, when the value of the bit field in the first information is greater than the first threshold, the processing module 502 determines that the MCS table is the second MCS table. The first threshold value may be set as described in the above method embodiments.

When determining the MCS table used by the data according to the value of the bit field in the first information, the processing module 502 may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is greater than or equal to the second threshold; and/or, when the value of the bit field in the first information is smaller than the second threshold, the processing module 502 determines that the MCS table is the second MCS table. The second threshold value may be set as described in the above embodiment of the method.

It should be understood that the above is illustrative of the division of the modules included in the communication apparatus 400 and the communication apparatus 500 in the above embodiments, and is merely a logical functional division, and other division ways may be implemented in practice. The functional blocks of the

communication devices

400 and 500 may be integrated into one block or may be physically separate. The integrated module may be implemented in the form of hardware or software functional module, and should not be construed as limited to the structure shown in fig. 4 or fig. 5.

In another implementation, the communication device provided in the embodiments of the present application may also be formed by hardware components, such as a processor, a memory, or a transceiver.

For example, if the communication device is a network device 102, the structure thereof may be as shown in fig. 6. For ease of understanding, fig. 6 illustrates a structure of a communication apparatus by taking a base station as an example. The communication device 600 may include a transceiver 601, a memory 602, and a processor 603. The transceiver 601 may be used for communication by a communication device, such as for transmitting or receiving the reference signals. The memory 602 is coupled to the processor 603 and is used for storing programs and data necessary for the communication device 600 to implement the functions. The processor 603 is configured to support the communication device 600 to perform corresponding processing functions in the above-mentioned method, such as generating information related to embodiments of the method of the present application, or performing steps of determining an MCS table and an MCS, which can be implemented by calling a program stored in the memory 602.

In particular, the transceiver 601 may be a wireless transceiver, and may be configured to support the communications apparatus 600 to receive and transmit signaling and/or data over a wireless air interface. The transceiver 601 may also be referred to as a transceiver unit or a communication unit, and the transceiver 601 may include a radio frequency unit (e.g., a Remote Radio Unit (RRU)) and one or more antennas, wherein the radio frequency unit may be specifically configured to transmit radio frequency signals and convert the radio frequency signals into baseband signals, and the one or more antennas may be specifically configured to radiate and receive the radio frequency signals. Optionally, the transceiver 601 may also include only the above radio frequency units, and then the communication device 600 may include the transceiver 601, the memory 602, the processor 603, and an antenna.

The memory 602 and the processor 603 may be integrated or may be independent of each other. As shown in fig. 6, the memory 602 and the processor 603 may be integrated into the control unit 610 of the communication device 600. Illustratively, the control unit 610 may include a baseband unit (BBU) of an LTE base station, which may also be referred to as a Digital Unit (DU), or the control unit 610 may include a Distributed Unit (DU) and/or a Centralized Unit (CU) in a base station under 5G and future radio access technologies. The control unit 610 may be formed by one or more boards, where a plurality of boards may jointly support a radio access network of a single access system (e.g., an LTE network), and a plurality of boards may also respectively support radio access networks of different access systems (e.g., an LTE network, a 5G network, or other networks). The memory 602 and processor 603 may serve one or more boards. That is, the memory 602 and the processor 603 may be provided separately on each board. Multiple boards may share the same memory 602 and processor 603. In addition, each board may be provided with necessary circuitry, for example, to couple the memory 602 and the processor 603. The above transceivers 601, processors 603, and memory 603 may be connected via a bus (bus) structure and/or other connection medium.

Based on the structure shown in fig. 6, when the communication device 600 needs to transmit data, the processor 603 may perform baseband processing on the data to be transmitted, and then output a baseband signal to the rf unit, and the rf unit performs rf processing on the baseband signal and then transmits the rf signal in the form of electromagnetic waves through the antenna. When data is transmitted to the communication device 600, the rf unit receives an rf signal through the antenna, converts the rf signal into a baseband signal, and outputs the baseband signal to the processor 603, and the processor 603 converts the baseband signal into data and processes the data.

When the method shown in fig. 1 is executed, the transceiver 601 shown in fig. 6 may be used to transmit the first information, where the first information is used to schedule data, and the specific manner of setting the first information may refer to the description in the above embodiment of the method. The transceiver 601 is further configured to receive or transmit the data, wherein the scrambling identifier of the first information and the target information are used to determine an MCS table used by the data, and the MCS used by the data is determined according to the first information and the MCS table. For example, the determination of the MCS table and/or MCS may be performed by a program in the memory 602 executed by the processor 603.

If the target information includes the second information, the MCS table may be a second MCS table when the second information indicates the second MCS table; and/or the MCS table may be the first MCS table when the second information indicates the first MCS table. The second information may be determined as described in the above method embodiment. In addition, in the case where the second information is not transmitted, a default MCS table may be used as the MCS table, and the default MCS table may be the first MCS table.

If the value of the MCS indication field is m, the (n + m + 1) th MCS in the MCS table may be used as the MCS, or the (n + m + 1) th MCS in the MCS table may be used as the MCS. Wherein n is a non-negative integer. The value of n may be preconfigured, or the transceiver 601 may be further configured to send third information indicating the value of n. The third information may be a higher layer signaling, such as configuration information.

In addition, the MCS indication field can also be used for 2 from the MCS table^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Therein, 2^NThe alternative MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device 102 through the configuration information, and at this time, the transceiver 601 may be further configured to transmit fourth information to the terminal device 101, where the fourth information is used to indicate the candidate MCS. Wherein the fourth information may be configuration information carried in higher layer signaling.

Illustratively, said 2^NAlternative(s)The MCS may be 2 with consecutive indices in the MCS table^NAn alternative MCS. Or, said 2^NThe candidate MCSs may be MCSs with discontinuous indexes in the MCS table, and the index difference between two adjacent candidate MCSs is the same, for example, the index difference between two adjacent candidate MCSs is 2.

In performing the method shown in fig. 2, the transceiver 601 may be configured to transmit first information, where the first information is used for scheduling data, and a value of a bit field in the first information is used for determining an MCS table used by the data. The specific arrangement of the bit field in the first information can refer to the description of the above method embodiment. The transceiver 601 may be configured to receive or transmit data, wherein the MCS used for the data is determined according to the first information and the MCS table. Illustratively, a program in the memory 602 may be executed by the processor 603 to perform the MCS table and/or the MCS determination steps.

In another possible implementation manner, when the communication device is a terminal apparatus 101, the structure thereof can also be as shown in fig. 7. For easy understanding and illustration, in fig. 7, the terminal device takes a mobile phone as an example to illustrate the structure of the communication apparatus. As shown in fig. 7, the communication device 700 may include a processor 701, a memory 702, and a transceiver 703.

The processor 701 can be used for processing a communication protocol and communication data, controlling a terminal device, executing a software program, processing data of the software program, and the like. The memory 702 may be used to store programs and data, and the processor 701 may execute the method performed by the terminal device 101 in the embodiment of the present application based on the programs.

The transceiver 703 may include a radio frequency unit and an antenna. The radio frequency unit can be used for converting the baseband signal and the radio frequency signal and processing the radio frequency signal. The antenna may be used for transceiving radio frequency signals in the form of electromagnetic waves. In addition, only the rf unit may be regarded as the transceiver 703, and the communication device 700 may include the processor 701, the memory 702, the transceiver 703 and the antenna.

In addition, the communication device 700 may also include an input/output device 704, such as a touch screen, a display screen, or a keyboard, which may be used to receive data input by a user and output data to the user. It should be noted that some kinds of communication devices may not have input/output devices.

When the method shown in fig. 1 is executed, the transceiver 703 may be configured to receive first information, where the first information is used for scheduling data, and the specific configuration of the first information may be as described in the above embodiment of the method. The processor 701 is operable to determine a modulation and coding scheme, MCS, table to be used by the data according to the scrambling identity of the first information and the target information. The transceiver 703 is also operable to receive or transmit the data, wherein the MCS used for the data is determined according to the first information and the MCS table. The MCS used for the data may also be determined by the processor 701.

If the target information includes the format of the first information, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processor 701 may determine that the MCS table is the first MCS table when the format of the first information is the first DCI format; and/or, the processor 701 may determine that the MCS table is a second MCS table when the format of the first information is a second DCI format.

If the target information includes information of a search space where the first information is located, when determining, according to the scrambling identifier of the first information and the target information, a Modulation and Coding Scheme (MCS) table used by the data, the processor 701 may determine, when the search space where the first information is located is a search space specific to a user, that the MCS table is a second MCS table; and/or the processor 701 may determine that the MCS table is the first MCS table when the search space in which the first information is located is the common search space.

If the target information includes information of a search space where the first information is located, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identifier of the first information and the target information, the processor 701 may determine the MCS table used by the data as the second MCS table when the index of the search space is greater than or equal to the index threshold; and/or, the processor 701 may determine that the MCS table is the first MCS table when the index of the search space is less than an index threshold. The setting manner of the index threshold value can refer to the description in the above method embodiment.

If the target information includes the second information, when determining the MCS table of the modulation and coding scheme used by the data according to the scrambling identity of the first information and the target information, the processor 701 may determine that the MCS table is the second MCS table when the second information indicates the second MCS table; and/or, the processor 701 may determine that the MCS table is the first MCS table when the second information indicates the first MCS table. The second information may be determined as described in the above method embodiment. In addition, in case that it is determined that the second information is not received, the processor 701 may determine a default MCS table as the MCS table, which may be the first MCS table.

If the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processor 701 may determine that the MCS table is a first MCS table when the value is less than or equal to a first threshold; and/or the processor 701 may determine that the MCS table is the second MCS table when the value is greater than the first threshold. The first threshold value may be set as described in the above method embodiments.

If the target information includes a value of a bit field in the first information, when determining a modulation and coding scheme MCS table used by the data according to the scrambling identifier of the first information and the target information, the processor 701 may determine that the MCS table is a first MCS table when the value is greater than or equal to a second threshold; and/or the processor 701 may determine that the MCS table is the second MCS table when the value is smaller than the second threshold. The second threshold value may be set as described in the above embodiment of the method.

The processor 701 is further configured to determine an MCS to use when transmitting data according to the first information and the MCS table. Specifically, the first information may further include an MCS indication field, where the MCS indication field includes N bits, and N is less than log₂M, M is the number of MCS in the MCS table, and the processor 701 is configured to determine the MCS used by the data from the MCS table according to the MCS indication field, so as to implement receiving and transmitting data according to the MCS.

When determining the MCS, if the value of the MCS indication field is m, the processor 701 may use the (n + m + 1) th MCS in the MCS table as the MCS, or the processor 701 may use the (n + m + 1) th MCS in the MCS table as the MCS. Wherein n is a non-negative integer. The value of n may be preconfigured, or the transceiver 703 may be further configured to receive third information indicating the value of n. The third information may be a higher layer signaling, such as configuration information.

In addition, processor 701 may also determine the MCSFrom 2 of the MCS table according to the MCS indication field^NAnd determining the MCS used by the data in the candidate MCSs, wherein N is a positive integer. Therein, 2^NThe candidate MCSs are pre-configured. Or, 2^NThe candidate MCS is indicated by the network device 102 through the configuration information, and at this time, the transceiver 703 may be further configured to receive fourth information sent by the network device 102, where the fourth information is used to indicate the candidate MCS. Wherein the fourth information may be configuration information carried in higher layer signaling.

In performing the method shown in fig. 2, the transceiver 703 may be configured to receive first information, which is used for scheduling data. The specific setting manner of the first information can refer to the description in the above method embodiment. The processor 701 may be configured to determine, according to a value of a bit field in the first information, an MCS table used by the data; the value of the bit field is used for indicating the priority of the service to which the data belongs. The transceiver 703 may also be configured to receive or transmit the data using the MCS determined according to the first information and the MCS table. The above first information may refer to the above description of the method embodiment.

When determining the MCS table used by the data according to the value of the bit field in the first information, the processor 701 may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is less than or equal to the first threshold; and/or, when the value of the bit field in the first information is greater than the first threshold, the processor 701 determines that the MCS table is a second MCS table. The first threshold value may be set as described in the above method embodiments.

When determining the MCS table used by the data according to the value of the bit field in the first information, the processor 701 may be specifically configured to determine that the MCS table is the first MCS table when the value of the bit field in the first information is greater than or equal to the second threshold; and/or the processor 701 determines that the MCS table is a second MCS table when the value of the bit field in the first information is smaller than the second threshold. The second threshold value may be set as described in the above embodiment of the method.

It should be understood that the components included in the above embodiments for the communication apparatus 600 and the communication apparatus 700 are illustrative, and are only one possible example, and may have another configuration when actually implemented. The components of the

communication devices

600 and 700 may be integrated into one module or may exist separately and physically. The integrated module may be implemented in the form of hardware or software functional module, and should not be construed as limited to the structure shown in fig. 6 or fig. 7.

It is to be understood that the communication module 401 and the data transmission module 402 as shown in fig. 4 may comprise a transceiver 601 as shown in fig. 6, which may comprise a radio frequency unit, or alternatively, which may comprise a radio frequency unit and an antenna. Additionally, the communication device 400 shown in fig. 4 may further comprise a processing module operable to indicate steps that the processor 603 shown in fig. 6 is capable of performing. The processing module may include the processor 603 as shown in fig. 6, or may include the memory 602 and the processor 603 as shown in fig. 6.

In addition, the processing module 501 shown in fig. 5 may include the processor 701 shown in fig. 7, or include the processor 701 and the memory 702 shown in fig. 7. The communication module 501 as shown in fig. 5 may comprise a transceiver 603 as shown in fig. 7, which may comprise a radio frequency unit, or alternatively, the transceiver may comprise a radio frequency unit and an antenna.

Based on the same concept as the method embodiments, embodiments of the present application further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, causes the computer to perform the operations performed by the network device and/or the terminal device in any one of the possible implementations of the method embodiments and the method embodiments.

Based on the same concept as the method embodiments, the present application further provides a computer program product, which when called by a computer, can enable the computer to implement the operations performed by the first terminal device and/or the second terminal device in any one of the possible implementations of the method embodiments and the method embodiments.

Based on the same concept as the method embodiments, the present application further provides a chip or a chip system, where the chip is coupled to a transceiver and is configured to implement the operations performed by the first terminal device and/or the second terminal device in any possible implementation manner of the method embodiments and the method embodiments. Where "coupled" means that two components are joined to one another, either directly or indirectly, which can be fixed or movable, and which can allow a flowing liquid, electrical, or other type of signal to be communicated between the two components. The chip system may include the chip.

Based on the same concept as the method embodiment, the present application further provides a communication system, which may be used to implement the operations performed by the first terminal device and/or the second terminal device in any one of the possible implementations of the method embodiment and the method embodiment. Illustratively, the communication system has a structure as shown in fig. 1 and/or fig. 2.

Embodiments of the present application are described with reference to flowchart illustrations and/or block diagrams of methods, apparatus, and computer program products according to embodiments. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Claims

1. A method of data transmission, comprising:

receiving first information, wherein the first information is used for scheduling data, the first information is Downlink Control Information (DCI), a scrambling identifier of the first information is a modulation and coding scheme (MCS-C-RNTI) or a high-priority radio network temporary identifier (highpriority-C-RNTI), and the highpriority-C-RNTI is used for identifying that the first information is used for scheduling high-priority data;

determining a Modulation and Coding Scheme (MCS) table used by the data according to the scrambling identifier of the first information and target information;

receiving or transmitting the data, wherein the MCS used by the data is determined according to the first information and the MCS table;

the target information includes at least one of the following information:

a format of the first information; or

A search space in which the first information is located; or

Second information indicating the MCS table; or

And the value of the bit field in the first information is used for indicating the priority of the data.

2. The method of claim 1, wherein the target information includes a format of the first information,

determining a Modulation and Coding Scheme (MCS) table used by the data according to the scrambling identifier of the first information and target information, wherein the MCS table comprises:

when the format of the first information is a first DCI format and the scrambling identifier is MCS-C-RNTI or Higher-priority-C-RNTI, the terminal device determines that the MCS table is a first MCS table; and/or

When the format of the first information is a second DCI format and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the terminal device determines that the MCS table is a second MCS table;

the first DCI format is different from the second DCI format, and the first MCS table is different from the second MCS table.

3. The method of claim 1, wherein the target information includes information of a search space in which the first information is located;

determining a Modulation and Coding Scheme (MCS) table used by the data according to the scrambling identity of the first information and target information, wherein the MCS table comprises:

when the search space in which the first information is located is a user-specific search space and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the terminal device determines that the MCS table is a second MCS table; and/or

When the search space where the first information is located is a public search space and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the terminal device determines that the MCS table is a first MCS table;

the first MCS table and the second MCS table are different.

4. The method of claim 1, wherein the target information includes information of a search space in which the first information is located;

when the index of the search space is greater than or equal to an index threshold value and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the terminal device determines the MCS table used by the data to be a second MCS table; and/or

When the index of the search space is smaller than an index threshold value and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the terminal device determines that the MCS table is a first MCS table;

the first MCS table and the second MCS table are different.

5. The method of claim 1, wherein the target information comprises second information indicating the MCS table;

when the second information indicates a second MCS table and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the terminal device determines that the MCS table is the second MCS table; and/or

When the second information indicates a first MCS table and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the terminal device determines that the MCS table is the first MCS table;

the first MCS table and the second MCS table are different.

6. The method of claim 1, wherein the target information comprises a value of a bit field in the first information;

when the value of the bit field in the first information is less than or equal to a first threshold and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the terminal device determines the MCS table as a first MCS table; and/or

When the value of the bit field in the first information is greater than the first threshold and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the terminal device determines that the MCS table is a second MCS table;

the first MCS table and the second MCS table are different.

7. The method of any of claims 1-6, wherein the first information comprises an MCS indication field, the MCS indication field comprising N bits, N being less than log₂M, M is the number of MCS in the MCS table;

further comprising:

and determining the MCS used by the data from the MCS table according to the MCS indication field.

8. The method of claim 7, wherein the determining the MCS used by the data from the MCS table according to the MCS indication field comprises:

the value of the MCS instruction field is m, and the terminal device determines that the MCS used by the data is the (n + m + 1) th MCS in the MCS table; alternatively, the first and second electrodes may be,

the value of the MCS instruction field is m, and the terminal device determines that the MCS used by the data is the mth × n +1 MCS in the MCS table;

wherein n is a non-negative integer.

9. The method of claim 8, wherein n is preconfigured; or

Further comprising:

and receiving third information, wherein the third information is used for indicating the value of the n.

10. A method of data transmission, comprising:

sending first information, wherein the first information is used for scheduling data, the first information is Downlink Control Information (DCI), a scrambling identifier of the first information is modulation and coding scheme (MCS-C-RNTI) or high-priority radio network temporary identifier (high-priority-C-RNTI), the high-priority-C-RNTI is used for identifying that the first information is used for scheduling high-priority data, the scrambling identifier and target information of the first information are used for determining an MCS table used by the data, and the first information and the MCS table are used for determining an MCS used by the data;

transmitting or receiving the data;

wherein the target information comprises at least one of the following information:

a format of the first information; or

A search space in which the first information is located; or

Second information indicating the MCS table; or

11. The method of claim 10, wherein the target information includes a format of the first information,

when the format of the first information is a first DCI format and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table is table 1, and the table 1 is a first MCS table; and/or

When the format of the first information is a second DCI format and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table is a table 2, and the table 2 is a second MCS table;

12. The method of claim 10, wherein the target information includes information of a search space in which the first information is located;

when the search space where the first information is located is a user-specific search space and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the MCS table is a second MCS table; and/or

When the search space where the first information is located is a public search space and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table is a first MCS table;

the first MCS table and the second MCS table are different.

13. The method of claim 10, wherein the target information includes information of a search space in which the first information is located;

when the index of the search space is greater than or equal to an index threshold value and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table used by the data is a second MCS table; and/or

When the index of the search space is smaller than an index threshold value and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, determining the MCS table as a first MCS table;

the first MCS table and the second MCS table are different.

14. The method of claim 10, wherein the target information comprises second information indicating the MCS table;

when the second information indicates a second MCS table and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table is the second MCS table; and/or

When the second information indicates a first MCS table and the scrambling identifier is MCS-C-RNTI or highher-priority-C-RNTI, the MCS table is the first MCS table;

the first MCS table and the second MCS table are different.

15. The method of claim 10, wherein the target information includes a value of a bit field in the first information;

when the value of the bit field in the first information is less than or equal to a first threshold and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the MCS table is a first MCS table; and/or

When the value of the bit field in the first information is greater than the first threshold and the scrambling identifier is MCS-C-RNTI or high-priority-C-RNTI, the MCS table is a second MCS table;

the first MCS table and the second MCS table are different.

16. The method of any of claims 10-15, wherein the first information comprises an MCS indication field, the MCS indication field comprising N bits, N being less than log₂M, M is the number of MCS in the MCS table, N is a positive integer, and the MCS indication field is used for determining the MCS used by the data from the MCS table.

17. The method of claim 16, wherein the MCS indication field takes the value of m, and the MCS used by the data is the (n + m + 1) th MCS in the MCS table;

or, the value of the MCS indication field is m, and the MCS used by the data is the mth × n +1 MCS in the MCS table;

wherein n is a non-negative integer.

18. The method of claim 17, wherein n is preconfigured; or

Further comprising:

and sending third information, wherein the third information is used for indicating the value of the n.

19. A communication device comprising a transceiver, a memory, and a processor;

the transceiver is used for supporting the communication device to carry out communication;

the memory is used for storing programs;

the processor, for invoking a program in the memory, for performing the method of any of claims 1-9.

20. A communication device comprising a transceiver, a memory, and a processor;

the memory is used for storing programs;

the processor, for invoking a program in the memory, for performing the method of any of claims 10-18.