WO2021031720A1

WO2021031720A1 - Method for determining modulation and coding, and communication device

Info

Publication number: WO2021031720A1
Application number: PCT/CN2020/100554
Authority: WO
Inventors: 余政; 温容慧
Original assignee: 华为技术有限公司
Priority date: 2019-08-16
Filing date: 2020-07-07
Publication date: 2021-02-25
Also published as: CN112398576A; CN112398576B

Abstract

The present application discloses a method for determining modulation and coding, comprising: receiving first information sent by a communication device by means of high-level signaling and a modulation and coding scheme (MCS) field in downlink control information (DCI), wherein the first information contains at least one of second information, third information and fourth information, the second information is used to indicate the magnitude of bits contained in the MCS field and a first MCS index, the third information is used to indicate an association relationship, used by the MCS field, between the MCS field and a second MCS index indicated by the MCS field, and the fourth information comprises a first parameter for determining the first MCS index and a second parameter for determining the second MCS index indicated by the MCS field; and determining, according to the first information and the MCS field, an MCS index for data transmission. In the technical solution of the present application, configuring, in high-level signaling, index information used to indicate an MCS ensures that even in the case where the number of bits of an MCS field is reduced, the flexibility of MCS indication can still be ensured.

Description

Method for determining modulation coding and communication equipment

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on August 16, 2019, the application number is 201910761864.8, and the invention title is "a method for determining modulation coding and communication equipment", the entire contents of which are incorporated by reference In this application.

Technical field

This application relates to the field of communications technology, and in particular to a method, device, terminal equipment, and network equipment for determining modulation and coding.

Background technique

In the new radio (NR) communication system, the base station increases the PDCCH transmission by reducing the payload size of the physical downlink control channel (PDCCH) and downlink control information (DCI). reliability. For example, the bits contained in the field in the DCI are reduced, thereby reducing the payload size of the DCI. In the NR PDCCH, the DCI includes a 5-bit modulation and coding scheme (MCS) field. If the number of bits of the MCS field is reduced, the performance of the PDCCH can be improved, but the flexibility of indicating the modulation and coding method will be reduced, that is, the flexibility of link adaptation will be reduced.

Therefore, how to reduce the number of bits in the MCS field while still ensuring the flexibility of the MCS indication is an urgent problem to be solved.

Summary of the invention

The embodiment of the present application provides a method for determining modulation and coding, which can still ensure the flexibility of MCS indication while reducing the number of bits in the MCS field in the DCI.

In view of this, the first aspect of the present application provides a method for determining modulation and coding. The method includes: receiving first information and a modulation and coding scheme MCS field in the downlink control information DCI sent by a communication device through high-layer signaling. The communication device may be a network device, such as a base station, or a terminal device. The high-level signaling is any high-level signaling higher than the physical layer, such as RRC signaling or media intervention layer signaling. Wherein, the first information includes at least one of second information, third information, and fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. The bit size that the MCS field can contain can be 0, 1, 2, 3, 4, or 5. The MCS index used for data transmission is determined according to the first information and the MCS field.

It can be seen from the above first aspect that the index information used to indicate the MCS is configured in the high-level signaling to ensure that the flexibility of the MCS indication can still be ensured even when the number of bits in the MCS field is reduced.

With reference to the foregoing first aspect, in the first possible implementation manner, the first information includes the second information, and the size of the second information is 5 bits. The 32 bit states of 5 bits are respectively 00000, 00001,00010～00011, 00100～00111,01000～01111, 10000～11111. There are 2 bit states in the 32 bit states of 5 bits indicating the bit size of the MCS field It is 4 bits; and/or, there are 4 bit states in the 32-bit state of 5 bits, indicating that the bit size of the MCS field is 3 bits; and/or, there are 8 in the 32-bit state of 5 bits The bit status indicates that the bit size of the MCS field is 2 bits; and/or, there are 16 bits in the 32 bit status of 5 bits. The bit status indicates that the bit size of the MCS field is 1 bit; and/or, the bit size of the MCS field is 5 bits. The presence of 1 bit state in the 32 bit states indicates that the bit size of the MCS field is 5 bits; and/or, the presence of 1 bit state in the 32 bit states of 5 bits indicates that the bit size of the MCS field is 0 bits. When the communication device sends the second information, the bit state of the second information is a specific bit state among the 32 states of 5 bits.

In combination with the first possible implementation manner of the first aspect, in the second possible implementation manner, each bit state in the two bit states indicates a first MCS index, for example, "00100" indicates a first MCS index. MCS index, "00111" indicates another first MCS index; and/or, each bit state in the 4-bit state indicates a first MCS index; and/or, each bit in the 8-bit state The state indicates a first MCS index; and/or, each bit state in the 16-bit state indicates a first MCS index; determining the MCS index used for data transmission according to the first information and the MCS field includes: according to the second Information, determine the bit size of the MCS field and the first MCS index; determine the second MCS index according to the MCS field; determine the MCS index used for data transmission according to the first MCS index and the second MCS index.

In combination with the first or second possible implementation of the first aspect, in the third possible implementation, the state of the 2 bits is: 00010,00011; and/or, the state of the 4 bits is: 00100 And/or, the state of the 8 bits is: 01000 to 01111; and/or, the state of the 16 bits is: 10000 to 11111.

With reference to the foregoing first aspect, in a fourth possible implementation manner, the first information includes second information, and the second information includes 5 bits. The 5 bits are (b0, b1, b2, b3, b4), b0 is the leftmost bit among the 5 bits, b4 is the rightmost bit among the 5 bits; the i-th bit among the 5 bits The +1 bit is bi, bi=1, and the state of the bits to the left of bi is 0. Determining the MCS index used for data transmission according to the first information and the MCS field includes: determining the value of i according to the second information; determining the bit size of the MCS field and the first MCS index according to the value of i. Determine the second MCS index according to the MCS field. According to the first MCS index and the second MCS index, the MCS index used for data transmission is determined. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^(5-(i+1)) ).

With reference to the above first aspect, in a fifth possible implementation manner, the bit size of the MCS field is n bits, and n is an integer greater than zero. The first information contains third information. The third information is used to indicate the association relationship used by the MCS field. The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The association relationship used is multiple One of a kind of relationship. The multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-continuous, and the N second MCS indexes are not at equal intervals. The third association relationship: the corresponding relationship between the N bit states corresponding to n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the two adjacent second MCS indexes of the N second MCS indexes The interval between MCS indexes is greater than 1. N is less than or equal to 2 ⁿ . Determining the MCS index used for data transmission according to the first information and the MCS field includes: determining the MCS index used for data transmission according to the used association relationship and the MCS field.

With reference to the fifth possible implementation manner of the first aspect, in the sixth possible implementation manner, the first information further includes fourth information, the fourth information includes the first parameter and the second parameter, and the first parameter is used to determine The first MCS index and the second parameter are used to determine the second MCS index indicated by the MCS field. Determining the MCS index used for data transmission according to the first information and the MCS field includes: determining the MCS index used for transmission according to the used correspondence, the first parameter and the second parameter.

With reference to the above first aspect, in a seventh possible implementation manner, the first information includes fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used to determine the first MCS index, The second parameter is used to determine the second MCS index indicated by the MCS field. Determining the MCS index used for data transmission according to the first information and the MCS field includes: determining the MCS index used for transmission according to the first parameter and the second parameter.

With reference to the sixth or seventh possible implementation manner of the first aspect described above, in an eighth possible implementation manner, the value of the first parameter is related to the bit size included in the MCS field; and/or , The value of the second parameter is related to the bit size included in the MCS field.

In combination with any one of the first to fourth, eighth, and ninth possible implementations of the first aspect, in the ninth possible implementation, the MCS index used for data transmission = the first MCS index + Second MCS index.

A second aspect of the present application provides a method for determining modulation and coding. The method includes: determining a modulation and coding scheme MCS field in the first information and downlink control information DCI. The first information and the MCS field are used by the communication device to determine data transmission. MCS index. Wherein, the first information includes at least one of second information, third information, and fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. The first information is sent to the communication device through high-layer signaling, and the DCI is sent through the physical downlink control channel.

With reference to the foregoing second aspect, in a first possible implementation manner, the first information includes the second information, and the size of the second information is 5 bits. The presence of 2 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 4 bits; and/or, the presence of 4 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 3 bits; and/or, there are 8 bits in the 5-bit 32-bit state indicating that the bit size of the MCS field is 2 bits; and/or, there are 16 bits in the 5-bit 32-bit state The bit size of the status indicator MCS field is 1 bit; and/or, there is 1 bit in the 32 bit status of 5 bits; the bit size of the status indicator MCS field is 5 bits; and/or, the bit size of 5 bits is 32 There is one bit state in each bit state indicating that the bit size of the MCS field is 0 bits.

In combination with the first possible implementation manner of the second aspect described above, in the second possible implementation manner, each bit state in the 2 bit states indicates a first MCS index; and/or, in the 4 bit state Each bit state indicates a first MCS index; and/or, each bit state in the 8 bit states indicates a first MCS index; and/or, each bit state in the 16 bit states indicates a first MCS index MCS index.

With reference to the first or second possible implementation manner of the second aspect described above, in a third possible implementation manner, the 2 bit state is: 00010,00011; and/or, the 4 bit state is : 00100 to 00111; and/or, the 8 bit states are: 01000 to 01111; and/or, the 16 bit states are: 10000 to 11111.

With reference to the foregoing second aspect, in a fourth possible implementation manner, the first information includes second information, and the second information includes 5 bits. The 5 bits are (b0, b1, b2, b3, b4), b0 is the leftmost bit among the 5 bits, and b4 is the rightmost bit among the 5 bits. The i+1th bit among the 5 bits is bi, bi=1, and the state of the bits on the left side of bi is 0. The second information is used by the communication device to determine the value of i; determine the bit size of the MCS field and the first MCS index according to the value of i; determine the MCS used for data transmission according to the first MCS index and the second MCS index indicated by the MCS field index. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^(5-(i+1)) ).

With reference to the foregoing second aspect, in a fifth possible implementation manner, the bit size of the MCS field is n bits, and n is an integer greater than zero. The first information contains third information. The third information is used to indicate the association relationship used by the MCS field. The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The association relationship used is multiple associations. One of the relationships, and the multiple relationships include at least one of a first relationship, a second relationship, and a third relationship. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-continuous, and the N second MCS indexes are not at equal intervals. The third association relationship: the corresponding relationship between the N bit states corresponding to n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the two adjacent second MCS indexes of the N second MCS indexes The interval between MCS indexes is greater than 1. N is less than or equal to 2 ⁿ .

With reference to the fifth possible implementation manner of the second aspect described above, in the sixth possible implementation manner, the first information further includes fourth information, the fourth information includes the first parameter and the second parameter, and the first parameter is used to determine The first MCS index and the second parameter are used to determine the second MCS index indicated by the MCS field. The first information is used by the communication device to determine the MCS index used for transmission according to the used correspondence, the first parameter and the second parameter.

With reference to the above second aspect, in a seventh possible implementation manner, the first information includes the fourth information, the fourth information includes the first parameter and the second parameter, and the first parameter is used by the communication device to determine the first parameter. MCS index, the second parameter is used by the communication device to determine the second MCS index indicated by the MCS field. The first information is used by the communication device to determine the MCS index used for data transmission according to the first parameter and the second parameter.

In combination with the sixth or seventh possible implementation manner of the second aspect described above, in the eighth possible implementation manner, the value of the first parameter is related to the bit size contained in the MCS field; and/or, the second parameter The value of is related to the bit size contained in the MCS field.

In combination with any one of the first to fourth, eighth, and ninth possible implementation manners of the second aspect, in the ninth possible implementation manner, the MCS index used for data transmission = the first MCS index + Second MCS index.

A third aspect of the present application provides a communication device. The device includes: a receiving module for receiving first information sent by a first device through high-layer signaling and a modulation and coding scheme in the downlink control information DCI carried by a physical downlink control channel MCS field. Wherein, the first information includes at least one of second information, third information, and fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. The determining module is used to determine the MCS index used for data transmission according to the first information and the MCS field.

With reference to the foregoing third aspect, in the first possible implementation manner, the first information includes the second information, and the size of the second information is 5 bits. The presence of 2 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 4 bits; and/or, the presence of 4 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 3 bits; and/or, there are 8 bits in the 5-bit 32-bit state indicating that the bit size of the MCS field is 2 bits; and/or, there are 16 bits in the 5-bit 32-bit state The bit size of the status indicator MCS field is 1 bit; and/or, there is 1 bit in the 32 bit status of 5 bits; the bit size of the status indicator MCS field is 5 bits; and/or, the bit size of 5 bits is 32 There is one bit state in each bit state indicating that the bit size of the MCS field is 0 bits.

In combination with the first possible implementation manner of the third aspect described above, in the second possible implementation manner, each bit state in the 2 bit states indicates a first MCS index; and/or, in the 4 bit state Each bit state indicates a first MCS index; and/or, each bit state in the 8 bit states indicates a first MCS index; and/or, each bit state in the 16 bit states indicates a first MCS index MCS index. The determining module is configured to determine the bit size of the MCS field and the first MCS index according to the second information; determine the second MCS index according to the MCS field; determine the MCS index used for data transmission according to the first MCS index and the second MCS index.

In combination with the first or second possible implementation manner of the third aspect described above, in the third possible implementation manner, the state of the 2 bits is: 00010,00011; and/or, the state of the 4 bits is: 00100 And/or, the state of the 8 bits is: 01000 to 01111; and/or, the state of the 16 bits is: 10000 to 11111.

With reference to the foregoing third aspect, in a fourth possible implementation manner, the first information includes second information, and the second information includes 5 bits. The 5 bits are (b0, b1, b2, b3, b4), b0 is the leftmost bit among the 5 bits, and b4 is the rightmost bit among the 5 bits. The i+1th bit among the 5 bits is bi, bi=1, and the state of the bits on the left side of bi is 0. The determining module is configured to determine the value of i according to the second information; determine the bit size of the MCS field and the first MCS index according to the value of i; determine the second MCS index according to the MCS field; according to the first MCS index and the second MCS index, Determine the MCS index used for data transmission. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^(5-(i+1)) ).

With reference to the foregoing third aspect, in a fifth possible implementation manner, the bit size of the MCS field is n bits, and n is an integer greater than zero. The first information contains third information. The third information is used to indicate the association relationship used by the MCS field. The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The association relationship used is multiple associations. A kind of relationship. The multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-continuous, and the N second MCS indexes are not at equal intervals. The third association relationship: the corresponding relationship between the N bit states corresponding to n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the two adjacent second MCS indexes of the N second MCS indexes The interval between MCS indexes is greater than 1. N is less than or equal to 2 ⁿ . The determining module is used to determine the MCS index used for data transmission according to the used association relationship and the MCS field.

With reference to the fifth possible implementation manner of the third aspect described above, in a sixth possible implementation manner, the first information further includes fourth information, and the fourth information includes the first parameter and the second parameter. To determine the first MCS index, the second parameter is used to determine the second MCS index indicated by the MCS field. The determining module is used to determine the MCS index used for transmission according to the correspondence relationship used by the MCS field, the first parameter and the second parameter.

With reference to the above third aspect, in a seventh possible implementation manner, the first information includes fourth information, and the fourth information includes the first parameter and the second parameter. The first parameter is used to determine the first MCS index, and the second parameter Used to determine the second MCS index indicated by the MCS field. The determining module is used to determine the MCS index used for transmission according to the first parameter and the second parameter.

In combination with the sixth or seventh possible implementation manner of the third aspect described above, in the eighth possible implementation manner, the value of the first parameter is related to the bit size contained in the MCS field; and/or, the second parameter The value of is related to the bit size contained in the MCS field.

In combination with any one of the first to fourth, eighth, and ninth possible implementation manners of the third aspect, in the ninth possible implementation manner, the MCS index used for data transmission = the first MCS index + Second MCS index.

A fourth aspect of the present application provides a communication device, including: a determining module, configured to determine the modulation and coding scheme MCS field in the first information and the downlink control information DCI, the first information and the MCS field are used by the communication device to determine data transmission MCS index. Wherein, the first information includes at least one of second information, third information, or fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. The sending module is configured to send the first information to the communication device through high-level signaling, and send the DCI through the physical downlink control channel.

With reference to the foregoing fourth aspect, in the first possible implementation manner, the first information includes the second information, and the size of the second information is 5 bits. The second information is used by the communication device to determine the bit size of the MCS field and the first MCS index; according to the first MCS index and the second MCS index indicated by the MCS field, determine the MCS index used for data transmission. The presence of 2 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 4 bits; and/or, the presence of 4 bit states in the 5-bit 32-bit state indicates that the bit size of the MCS field is 3 bits; and/or, there are 8 bit states in the 32 bit states of 5 bits, indicating that the bit size of the MCS field is 2 bits; and/or, there are 16 bits in the 32 bit states of the 5 bits A bit status indicates that the bit size of the MCS field is 1 bit; and/or, there is 1 bit in the 32 bit status of 5 bits; and/or, the bit size of the MCS field is 5 bits; and/or, 5 bits There is 1 bit state in the 32 bit states indicating that the bit size of the MCS field is 0 bits.

With reference to the first possible implementation manner of the fourth aspect described above, in the second possible implementation manner, each of the two bit states indicates a first MCS index; and/or, the four bit states Each bit state in the bit states indicates a first MCS index; and/or, each bit state in the 8 bit states indicates a first MCS index; and/or, each bit state in the 16 bit states Indicates a first MCS index.

With reference to the first or second possible implementation manner of the fourth aspect described above, in a third possible implementation manner, the 2 bit state is: 00010,00011; and/or, the 4 bit state is : 00100 to 00111; and/or, the 8 bit states are: 01000 to 01111; and/or, the 16 bit states are: 10000 to 11111.

With reference to the foregoing fourth aspect, in a fourth possible implementation manner, the first information includes the second information, and the second information includes 5 bits, and the 5 bits are (b0, b1, b2, b3, b4), b0 is the leftmost bit among the 5 bits, and b4 is the rightmost bit among the 5 bits. The i+1th bit among the 5 bits is bi, bi=1, and the state of the bits on the left side of bi is 0. The second information is used by the communication device to determine the value of i; determine the bit size of the MCS field and the first MCS index according to the value of i; determine the data transmission according to the first MCS index and the second MCS index indicated by the MCS field The MCS index. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^(5-(i+1)) ).

With reference to the foregoing fourth aspect, in a fifth possible implementation manner, the bit size of the MCS field is n bits, and n is an integer greater than zero. The first information contains third information. The third information is used to indicate the association relationship used by the MCS field. The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The association relationship used is multiple One of a kind of relationship. The multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-continuous, and the N second MCS indexes are not at equal intervals. The third association relationship: the corresponding relationship between the N bit states corresponding to n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the two adjacent second MCS indexes of the N second MCS indexes The interval between MCS indexes is greater than 1. N is less than or equal to 2 ⁿ .

With reference to the fifth possible implementation manner of the fourth aspect described above, in the sixth possible implementation manner, the first information further includes fourth information, the fourth information includes the first parameter and the second parameter, and the first parameter is used for communication. The device determines the first MCS index, and the second parameter is used by the communication device to determine the second MCS index indicated by the MCS field. The first information is used by the communication device to determine the MCS index used for transmission according to the used correspondence, the first parameter and the second parameter.

With reference to the foregoing fourth aspect, in a seventh possible implementation manner, the first information includes fourth information, the fourth information includes the first parameter and the second parameter, and the first parameter is used by the communication device to determine the first MCS index. The second parameter is used by the communication device to determine the second MCS index indicated by the MCS field. The first information is used by the communication device to determine the MCS index used for transmission according to the first parameter and the second parameter.

In combination with the sixth or seventh possible implementation manner of the fourth aspect described above, in the eighth possible implementation manner, the first parameter is related to the bit size contained in the MCS field; and/or, the second parameter is related to the MCS field The size of the included bits is related.

In combination with any one of the first to fourth, eighth, and ninth possible implementation manners of the fourth aspect, in the ninth possible implementation manner, the MCS index used for data transmission = the first MCS index + Second MCS index.

A fifth aspect of the present application provides a communication device, including: a processor and a memory; the memory is used to store computer execution instructions, and when the communication device is running, the processor executes the computer execution instructions stored in the memory to enable the The network device executes the method for determining modulation and coding as in the foregoing first aspect or any one of the possible implementation manners of the first aspect.

A sixth aspect of the present application provides a communication device, including: a processor and a memory; the memory is used to store computer-executable instructions. When the network device is running, the processor executes the computer-executable instructions stored in the memory to enable the The communication device executes the method for determining modulation and coding as in the foregoing second aspect or any possible implementation manner of the second aspect.

The seventh aspect of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on a computer, the computer can execute the first aspect or any possible implementation of the first aspect. Method of determining the modulation and coding method.

The eighth aspect of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium, and when it runs on a computer, the computer can execute the second aspect or any possible implementation of the second aspect. Method of determining the modulation and coding method.

The ninth aspect of the present application provides a computer program product containing instructions, which when running on a computer, enables the computer to execute the modulation code determination method of the first aspect or any one of the possible implementations of the first aspect.

The tenth aspect of the present application provides a computer program product containing instructions, which when running on a computer, enables the computer to execute the method for determining modulation coding in the second aspect or any one of the possible implementations of the second aspect.

The eleventh aspect of the present application provides a chip system, which includes a processor, and is configured to support a communication device to implement the foregoing first aspect or any one of the possible implementation manners of the first aspect. In a possible design, the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the communication device. The chip system can be composed of chips, or include chips and other discrete devices.

A twelfth aspect of the present application provides a chip system, which includes a processor, and is configured to support a communication device to implement the above-mentioned second aspect or any one of the possible implementation manners of the second aspect. In a possible design, the chip system also includes a memory, and the memory is used to store the necessary program instructions and data of the communication device. The chip system can be composed of chips, or include chips and other discrete devices.

Among them, the technical effects brought by any one of the third aspect, fifth aspect, seventh aspect, ninth aspect, and eleventh aspect can refer to the technical effects brought about by different implementation manners in the first aspect. I won't repeat them here.

Among them, the technical effects brought about by any one of the fourth aspect, sixth aspect, eighth aspect, tenth aspect, and twelfth aspect can be found in the technical effects brought about by different implementation manners in the second aspect. I won't repeat them here.

In the embodiment of the present application, the index information used to indicate the MCS is configured in the high-level signaling, thereby ensuring that the flexibility of the MCS indication can still be guaranteed even when the number of bits in the MCS field is reduced.

Description of the drawings

FIG. 1 is a schematic diagram of the architecture of a communication system applied by an embodiment of the present application;

2 is a schematic diagram of an embodiment of a method for determining modulation coding provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of another embodiment of a method for determining modulation coding provided by an embodiment of the present application;

4 is the bit size of the MCS field indicated by the position where the first 5 bits of the second information provided by the embodiment of the present application is 1 from left to right;

FIG. 5 is a schematic diagram of another embodiment of a method for determining modulation coding provided by an embodiment of the present application;

Fig. 6 is a schematic diagram of an embodiment of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of another embodiment of a communication device provided by an embodiment of the present application;

Fig. 8 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

detailed description

The embodiments of the present application provide a method for determining modulation and coding and a communication device, which can still ensure the flexibility of MCS indication while reducing the number of bits in the MCS field in the DCI.

In order to enable those skilled in the art to better understand the solution of the application, the technical solutions in the embodiments of the application will be clearly and completely described below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are only It is a part of the embodiments of this application, not all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

The terms "first", "second", "third", "fourth", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and not necessarily used to describe a specific sequence Or precedence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments described herein can be implemented in an order other than the content illustrated or described herein. In addition, the terms "including" and "having" and any variations of them are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment.

Fig. 1 is a schematic diagram of the architecture of a communication system applied by an embodiment of the present application.

As shown in FIG. 1, the communication system includes a wireless access network device 110 and at least one terminal device (120-170 in FIG. 1). The terminal device is connected to the wireless access network device in a wireless manner, and the terminal device may be in a fixed position or movable. FIG. 1 is only a schematic diagram. The communication system may also include other network equipment, such as core network equipment, wireless relay equipment, and wireless backhaul equipment, which are not shown in FIG. 1. The embodiment of the present application does not limit the number of wireless access network devices and terminal devices included in the communication system.

Radio access network equipment is the access equipment that terminal equipment accesses to the mobile communication system in a wireless manner. It can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), and a transmission reception point. TRP), the next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be a module or unit that completes part of the base station functions, such as It can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The embodiment of the present application does not limit the specific technology and specific device form adopted by the radio access network device. In this application, wireless access network equipment is referred to as network equipment. Unless otherwise specified, network equipment refers to wireless access network equipment.

A terminal device may also be called a terminal, a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and so on. Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (Augmented Reality, AR) terminal devices, industrial control (industrial control) ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid, and wireless terminals in transportation safety (transportation safety) Terminal, wireless terminal in smart city, wireless terminal in smart home, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

The communication device in the embodiment of the present application may be a network device or a terminal device. Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on airborne aircraft, balloons, and satellites. The embodiments of the present application do not limit the application scenarios of network equipment and terminal equipment.

The network device and the terminal device can communicate through a licensed spectrum (licensed spectrum), can also communicate through an unlicensed spectrum (unlicensed spectrum), or communicate through a licensed spectrum and an unlicensed spectrum at the same time. Network equipment and terminal equipment can communicate through a frequency spectrum below 6 GHz (gigahertz, GHz), communicate through a frequency spectrum above 6 GHz, and communicate using a frequency spectrum below 6 GHz and a frequency spectrum above 6 GHz at the same time. The embodiments of the present application do not limit the spectrum resources used between the network equipment and the terminal equipment, and the terminal equipment and the terminal equipment.

Fig. 2 is a schematic diagram of an embodiment of a method for determining modulation coding provided by an embodiment of the application.

Referring to FIG. 2, an embodiment for determining modulation and coding provided by an embodiment of the present application may include:

201. The terminal device receives the first information and the modulation and coding scheme MCS field in the downlink control information DCI sent by the communication device through high-layer signaling. Wherein, the first information includes at least one of second information, third information, or fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field.

The dual-sided entities in the embodiments of the present application are respectively the communication device on the transmitting end and the terminal device on the receiving end, that is, the communication device refers to the network device as described in FIG. 1, such as a base station; in addition, the dual-sided entities may also be respectively The terminal device and the terminal device, that is, the communication device is another terminal device, which is not limited in this application.

In this application, the terminal device receives the first information and the modulation and coding scheme MCS field in the downlink control information DCI sent by the communication device through high-level signaling. The high-level signaling is any high-level signaling higher than the physical layer. For example, it may be radio resource control (RRC) signaling, packet data convergence protocol (PDCP) signaling, or media access control signaling, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the first information may include at least one of the second information, the third information, or the fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. The bit size in the MCS field is related to the first information, and the bit size of the MCS field can be 0, 1, 2, 3, 4, or 5. This application will introduce the first information and MCS fields in detail in the following embodiments.

202. The terminal device determines the MCS index used for data transmission according to the first information and the MCS field.

In this embodiment of the present application, after receiving the first information and DCI, the terminal device determines the MCS index used for data transmission according to the first information and the information indicated by the MCS field in the DCI.

In the embodiment of the present application, by configuring the index information used to indicate the MCS in the high-level signaling, the bit size of the MCS field in the DCI can be reduced, and when the number of bits in the MCS field is reduced, the flexibility of MCS indication can be Guaranteed.

Next, the first information sent by the communication device through high-level signaling will be specifically introduced. First, it will be introduced that the first information contains second information, which is used to indicate the bit size contained in the MCS field in the DCI and the value of the first MCS index. The situation is specifically introduced. Please refer to FIG. 3, which is a schematic diagram of another embodiment of a method for determining modulation coding provided by an embodiment of the present application.

Referring to FIG. 3, an embodiment for determining modulation and coding provided in an embodiment of the present application may include:

301. A terminal device receives first information sent by a communication device through high-level signaling and a modulation and coding scheme MCS field in the downlink control information DCI, where the first information includes information indicating the bit size contained in the MCS field and the first MCS index Second information.

In the embodiments of the present application, the two-sided entities in the embodiments of the present application are respectively a communication device and a terminal device, that is, a communication device refers to a network device as described in FIG. 1, such as a base station. In addition, the dual-sided entities may also be a terminal device and a terminal device respectively, that is, the communication device is another terminal device, which is not limited in this application. In the embodiment of the present application, the terminal device receives the first information and the modulation and coding scheme MCS field in the downlink control information DCI sent by the communication device through high-level signaling, and the high-level signaling is as described above.

In the embodiment of the present application, the first information includes second information used to indicate the bit size included in the MCS field and the first MCS index, where the size of the second information is 5 bits. It should be noted that there are a total of 32 bit states for 5 bits. When the communication device sends the second information, the bit state of the second information is a specific bit state among the 32 states of 5 bits. The bit size of the MCS field is configurable, and the bit size of the MCS field can be 0, 1, 2, 3, 4, or 5. It should be noted that in the embodiments of the present application, the first information may include other information in addition to the second information, which is not limited in the embodiments of the present application.

Specifically, the state of the 32 bits of 5 bits is 00000,00001,00010～00011,00100～001111,01000～01111,10000～11111. The presence of 2 bit states in the 32-bit state indicates that the bit size of the MCS field in the DCI is 4 bits; and/or, the presence of 4 bit states in the 32-bit state indicates that the bit size of the MCS field in the DCI is 3 bits; and/or, there may be 8 bit states in the 32 bit state indicating that the bit size of the MCS field in the DCI is 2 bits; and/or, there may be 16 bit states in the 32 bit state Indicates that the bit size of the MCS field is 1 bit; and/or, there may be 1 bit in the 32 bit states, indicating that the bit size of the MCS field is 5 bits; and/or, the 32 bits There may be 1 bit in the state. The state indicates that the bit size of the MCS field is 0 bits.

For example, Table 1 shows the indication relationship between 5 bits and the bit size of the MCS field and the first MCS index.

Table 1 5 bits indicate the bit size contained in the MCS field and the first MCS index

In Table 1, a bit status indicating that the bit size of the MCS field is 0 bits may be 00000. The 1-bit status indicating that the bit size of the MCS field is 5 bits may be 00001. The 2 bit status indicating that the bit size of the MCS field is 4 bits can be 00010 and 00011. The 4-bit status indicating that the bit size of the MCS field is 3 bits may be 00100-00111. The 8-bit status indicating that the bit size of the MCS field is 2 bits may be 01000-01111. The 16-bit status indicating that the bit size of the MCS field is 1 bit may be 10000-11111. As shown in Table 2, 5 bits indicate a specific example of the indication relationship between the bit size of the MCS field and the first MCS index.

Table 2 A specific example of 5 bits indicating the bit size included in the MCS field and the first MCS index

For example, as shown in Table 2, when the second information is "00011", the second information indicates that the bit size of the MCS field is 4 bits.

Optionally, one bit status indicating that the bit size of the MCS field is 0 bits in Table 1 may be 00000. The 1-bit status indicating that the bit size of the MCS field is 5 bits may be 11111. The 2 bit status indicating that the bit size of the MCS field is 4 bits can be 00001 and 00010. The 4-bit status indicating that the bit size of the MCS field is 3 bits may be 00011-00110. The 8-bit status indicating that the bit size of the MCS field is 2 bits may be 00111-01110. The 16-bit status indicating that the bit size of the MCS field is 1 bit may be 01111-11110. As shown in Table 3, 5 bits indicate another specific example of the relationship between the bit size of the MCS field and the first MCS index.

Table 3 A specific example of 5 bits indicating the bit size contained in the MCS field and the first MCS index

For example, as shown in Table 3, when the second information is "00011", the second information indicates that the bit size of the MCS field is 3 bits.

It should be noted that the above example introduction of the indication relationship between the bit size of the MCS field and the 5-bit bit status may also be other indication relationships, and the above examples should not be construed as limiting the application.

Optionally, each of the 2 bit states indicating that the bit size of the MCS field is 4 bits, indicates a first MCS index. For example, when the two bit states are 00010 and 00011, 00010 indicates the first MCS index A0, and 00011 indicates the first MCS index A1. At this time, if the second information is "00010", the second information indicates that the value of the first MCS index is A0; and/or indicates that the bit size of the MCS field is 3 bits in the 4 bit state Each bit status indicates a first MCS index. When the 4 bit states are 00100-00111, the 4 bit states respectively indicate the values A0 to A3 of the first MCS index; and/or, indicate the 8-bit state where the bit size of the MCS field is 2 bits Each bit state in indicates a first MCS index. For example, when the 8 bit states are 01000-01111 respectively, the 8 bit states respectively indicate the values C0-C7 of the first MCS index; and/or, indicate that the bit size of the MCS field is 16 bits of 1 bit. Each bit state in the bit state indicates a first MCS index. For example, when the 16 bit states are respectively 10000-11111, the 16 bit states respectively indicate the values D0-D15 of the first MCS index.

Optionally, the value of the aforementioned first MCS index may be the value shown in Table 4.

Table 4 Values of the first MCS index

A0,A1A0,A1	0,160,16
B0-B3B0-B3	0,8,16,240,8,16,24
C0-C7C0-C7	0,4,8,12,16,20,24,280,4,8,12,16,20,24,28
D0-D15D0-D15	0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,300,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30

It should be noted that Table 4 is an example of the value of the first MCS index. In the actual application process, other value corresponding methods may also be used. Table 4 should not be construed as a limitation of the application.

Optionally, the size of the second information is 5 bits, and the 5 bits are (b0, b1, b2, b3, b4), where b0 is the leftmost bit among the 5 bits, and b4 is the 5 bits For the rightmost bit, the bit size included in the MCS field in the DCI can be determined by the bit position of the first 1 from left to right in b0-b4. FIG. 4 shows the bit size of the MCS field indicated by the first bit position of 1 in the 5 bits of the second information from left to right.

As shown in Figure 4, for example, when the 5 bits (b0, b1, b2, b3, b4) of the second information do not contain a bit of 1, the second information indicates that the bit size of the MCS field of the DCI is 0 bits. . For example, when the first bit position of 1 from left to right in the 5 bits of the second information (b0, b1, b2, b3, b4) is bi, the second information indicates that the bit size of the MCS field of DCI is (i+1) bits. Specifically, when the first bit position of 1 from left to right in the 5 bits (b0, b1, b2, b3, b4) of the second information is b4, the second information indicates the bit size of the MCS field of the DCI It is 5 bits. When the first 1 bit position from left to right among the 5 bits of the second information (b0, b1, b2, b3, b4) is b3, the second information indicates that the bit size of the MCS field of DCI is 4 Bits. When the first 1 bit position from left to right among the 5 bits of the second information (b0, b1, b2, b3, b4) is b2, the second information indicates that the bit size of the MCS field of the DCI is 3 Bits. When the first bit position of 1 in the 5 bits of the second information (b0, b1, b2, b3, b4) from left to right is b1, the second information indicates that the bit size of the MCS field of DCI is 2 Bits. When the first bit position of 1 from left to right among the 5 bits of the second information (b0, b1, b2, b3, b4) is b0, the second information indicates that the bit size of the MCS field of the DCI is 1 Bits.

Optionally, the value of the first MCS index may be 2 ⁽ⁱ⁺¹⁾ * (a decimal value indicated by 5 bits-2 ^(5-(i+1)) ).

302. Determine an MCS index used for data transmission according to the second information and the MCS field.

In the embodiment of the present application, based on the indication relationship between the above-mentioned second information and the bit size of the MCS field in the DCI and the value of the first MCS index, after receiving the second information and the DCI, the terminal device can use the size of the second information Determine the first MCS index and the second MCS index indicated by the MCS field, and determine the MCS index used for data transmission according to the first MCS index and the second MCS index.

The foregoing specifically introduces that the first information sent by the communication device to the terminal device through high-level signaling includes the second information. The first information sent by the communication device to the terminal device through high-level signaling may also include at least one of the third information and the fourth information. The third information is used to indicate the association relationship used by the MCS field in the DCI. The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field. This embodiment of the present application will specifically introduce this. Please refer to FIG. 5, which is a schematic diagram of another embodiment of determining modulation coding provided in an embodiment of the present application.

Referring to FIG. 5, an embodiment for determining modulation and coding provided in an embodiment of the present application may include:

501. A terminal device receives first information and a modulation and coding scheme MCS field in downlink control information DCI that are sent by a communication device through high-level signaling, where the first information includes at least one of third information and fourth information. The third information is used to indicate the third information of the association relationship used by the MCS field in the DCI, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index indicated by the MCS field.

In the embodiments of the present application, the dual-sided entities in the embodiments of the present application are respectively a communication device and a terminal device, that is, the communication device refers to the network device as described in FIG. 1, such as a base station; in addition, the dual-sided entity may also They are a terminal device and a terminal device respectively, that is, the communication device is another terminal device, which is not limited in this application. In the embodiment of this application, the terminal device receives the first information and the modulation and coding scheme MCS field in the downlink control information DCI sent by the communication device through high-level signaling. The high-level signaling is as described above, which is not limited in the embodiment of this application. .

In the embodiment of this application, the first information includes at least one of the third information and the fourth information, that is, the first information includes the third information, the first information includes the third information and the fourth information, and the first information includes the fourth information. The three situations of information will be explained separately below.

In the embodiment of the present application, the third information is used to indicate the association relationship used by the MCS field, and the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field. The association relationship indicated by the third information is one of multiple association relationships, and the multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship.

Specifically, when the MCS field contains n bits, the n bits correspond to N types of bit states, n is an integer greater than 0, and N is less than or equal to 2 ⁿ . The first association relationship is a correspondence relationship between N types of bit states corresponding to n bits and N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship is the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes. The N second MCS indexes are non-continuous, and the N second MCS indexes are not at equal intervals. The third association relationship is the corresponding relationship between the N bit states corresponding to n bits and the N second MCS indexes. The N second MCS indexes are equally spaced, and the two adjacent second MCS indexes of the N second MCS indexes The interval between the MCS indexes is greater than 1, that is, among the N second MCS indexes, the i+1 second MCS index=the i second MCS index+k, and k is an integer greater than 1.

For example, when the MCS field contains 3 bits, the second information sent by the communication device to the terminal device through high-level signaling indicates 8 second MCS indexes corresponding to the 8 bit states of the 3 bits, as shown in Table 5 below.

Table 5 MCS field and the second MCS index indicated by the MCS field

MCS字段MCS field	第二MCS索引Second MCS index
000000	M0M0
001001	M1M1
010010	M2M2
011011	M3M3
100100	M4M4
101101	M5 M5
110110	M6M6
111111	M7M7

It should be noted that when the second information indicates that the association relationship used in the MCS field is the first type of association relationship, M0 to M7 are 8 consecutive second MCS indexes with a certain value, for example: the second MCS indexes M0 to M0 to M7 is 1, 2, 3, 4, 5, 6, 7, 8 or 13, 14, 15, 16, 17, 18, 19, 20. When the second information indicates that the association relationship used in the MCS field is the second type of association relationship, M0 to M7 are 8 non-continuous and non-equal interval second MCS indexes with certain values, for example, the second MCS indexes M0 to M0 to M7 is 1, 3, 4, 6, 7, 8, 9, 26. When the third information indicates that the association relationship used in the MCS field is the third type of association relationship, M0 to M7 are 8 second MCS indexes with a certain value at equal intervals, for example, the second MCS indexes M0 to M7 are respectively 0 , 2,4,6,8,10,12,14.

In the embodiment of the present application, the fourth information includes a first parameter and a second parameter. The first parameter is used to determine the first MCS index, and the second parameter is used to determine the second MCS index.

In the embodiment of the present application, the communication device may directly configure the value of the first MCS index through high-level signaling, and the terminal device may determine the value of the first MCS index according to the value of the first parameter. Optionally, the value of the first parameter is the value of the first MCS index. Optionally, the first parameter is a fixed constant. For example, the first parameter is fixed to 0.

Optionally, in this embodiment of the present application, the value of the first parameter is related to the bit size n included in the MCS field.

For example, the value set of the first MCS index is {0,32/(2 ^(5-n) ,……,(2 ^(5-n) -1)*32/2 ^(5-n) }. For example, When n=2, the set is {0, 4, 8, 12, 16, 20, 24, 28}, and the first parameter indicates that the value of the first MCS index is one of the sets.

For example, the value set of the first MCS index is {0,32/(2 ^(6-n) ),……,(2 ^(6-n) -1)*32/(2 ^(6-n) )} . For example, when n=2, the set is {0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30}, the first parameter indicates the first The value of the MCS index is one of the set.

Optionally, the first parameter may also be used to indicate the value interval of the first MCS index, and the terminal device may determine the first MCS index according to the value interval indicated by the first parameter.

Optionally, the value interval is related to the bit size n contained in the MCS field.

For example, the value interval of the first MCS index is 32/(2 ^(5-n) ), 32/(2 ^(6-n) ), or 32/2 ( ^(7-n) ). The first parameter indicates that the value interval of the first MCS index is 32/(2 ^(5-n) ), 32/(2 ^(6-n) ) or 32/( ^(7-n) ). It should be noted that the value interval of the first MCS index may also be another value interval, which is not limited in the embodiment of the present application.

In the embodiment of the present application, the second parameter is used to determine the second MCS. For example, the second parameter may be used to indicate the size of the interval between every two adjacent second indexes in the N second indexes.

Optionally, the value of the second parameter is related to the bit size n included in the MCS field in the DCI. For example, the value range of the second parameter can be {1,32/(2 ⁿ )}, or the value range of the second parameter can be {32/(2 ⁽ⁿ⁺¹⁾ ), 32/(2 ⁿ ) }, or the value range of the second parameter can be {32/(2 ^(n-1) ), 32/(2 ⁿ )}, or the value range of the second parameter can be {32/(2 ^{(n+ 1)} ), 32/(2 ⁿ ), 32/(2 ^(n-1) )}.

Optionally, the value range of the second parameter is {1,2,4}.

When the first information contains only the fourth information, the terminal device can determine the first MCS index and the second MCS index respectively according to the first parameter and the second parameter in the fourth information, and then according to the first MCS index and the second MCS index. The index determines the MCS index used for data transmission.

When the first information includes the third information and the fourth information, the terminal device may determine the first MCS index determined by the first parameter contained in the fourth information according to the corresponding relationship indicated by the third information, and the second parameter determined by the second parameter. The MCS index determines the MCS index used for data transmission.

Next, taking the MCS field containing 3 bits and the third information indicating the first association relationship as an example, the MCS index used for data transmission is determined according to the third information and the fourth information in the embodiment of the present application. Table 6 shows the correspondence between an MCS field and an MCS index used for data transmission.

Table 6 Correspondence between MCS field and MCS index used for data transmission under the first association relationship

MCS字段MCS field	数据传输所用的MCS索引MCS index for data transmission
000000	第一MCS索引+0First MCS index +0
001001	第一MCS索引+1First MCS index +1
010010	第一MCS索引+2First MCS index +2
011011	第一MCS索引+3First MCS index +3
100100	第一MCS索引+4First MCS index +4
101101	第一MCS索引+5First MCS index +5
110110	第一MCS索引+6First MCS index +6
111111	第一MCS索引+7First MCS index +7

As shown in Table 6, the value added by the first MCS index (ie 0, 1, 2, ..., 7) is the second MCS index. The third information indicates the first association relationship, that is, the eight second MCS indexes corresponding to the eight bit states are continuous. The first parameter in the fourth information is used to determine the first MCS index, and the second parameter is used to determine eight second MCS indexes. The MCS index used for data transmission is the first MCS index+the second MCS index.

Optionally, the embodiment of the present application also provides an example in which the third information indicates the third association relationship when the MCS field contains 3 bits. Please refer to Table 7. Table 7 shows the MCS field and the third association relationship. Correspondence of the MCS index used for data transmission.

Table 7 Correspondence between MCS field and MCS index used for data transmission under the third association relationship

MCS字段MCS field	数据传输所用的MCS索引MCS index for data transmission
000000	第一MCS索引+0First MCS index +0
001001	第一MCS索引+2First MCS index +2
010010	第一MCS索引+4First MCS index +4
011011	第一MCS索引+8First MCS index +8
100100	第一MCS索引+10First MCS index +10
101101	第一MCS索引+12First MCS index +12
110110	第一MCS索引+14First MCS index +14
111111	第一MCS索引+16First MCS index +16

As shown in Table 7, the third information indicates the third association relationship. The value added by the first MCS index (ie 0, 2, 4,..., 16) is the second MCS index, that is, the 8 second MCS indexes corresponding to the 8 bit states are equally spaced, and every two adjacent ones The interval of the second MCS index is 2. The first parameter in the fourth information is used to determine the first MCS index, and the second parameter is used to determine eight second MCS indexes. The MCS index used for data transmission is the first MCS index+the second MCS index.

It should be understood that the example given in Table 6 and Table 7 is only an example description of the embodiment of the present application, and should not be understood as a limitation of the present application.

502. The terminal device determines the MCS index used for data transmission according to the first information and the MCS field.

In the embodiment of the present application, after receiving the first information and DCI sent by the communication device through high-level signaling, the terminal device determines the MCS index used for data transmission according to the first information and the MCS field.

It can be understood that, in order to implement the functions in the foregoing embodiments, the terminal device and the network device include hardware structures and/or software modules corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and method steps of the examples described in the embodiments disclosed in this application, this application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application scenarios and design constraints of the technical solution.

Fig. 6 is a schematic diagram of an embodiment of a communication device provided by an embodiment of the application. The communication device can be used to implement the function of the terminal device at the receiving end in the foregoing method embodiment, and therefore can also achieve the beneficial effects of the foregoing method embodiment. In the embodiment of the present application, the communication device may be a terminal device or a module (such as a chip) applied to the terminal device.

Referring to FIG. 6, the communication device 60 provided in the embodiment of the present application may include:

The receiving module 601 is configured to receive the first information sent by the first device through high-layer signaling and the modulation and coding scheme MCS field in the downlink control information DCI carried by the physical downlink control channel. Wherein, the first information includes at least one of second information, third information, or fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate an association relationship used by the MCS field, and the association relationship is an association relationship between the MCS field and a second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter. The first parameter is used to determine a first MCS index, and the second parameter is used to determine a second MCS index indicated by the MCS field.

The determining module 602 is configured to determine the MCS index used for data transmission according to the first information and the MCS field.

Optionally, as an embodiment, the first information includes the second information, and the size of the second information is 5 bits. The presence of 2 bit status indications in the 5 bit 32 bit status indicates that the bit size of the MCS field is 4 bits; and/or, the presence of 4 bit status indications in the 5 bit 32 bit status The bit size of the MCS field is 3 bits; and/or, the presence of 8 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 2 bits; and/or, so The presence of 16 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 1 bit; and/or, the presence of 1 bit state indicator in the 32 bit states of the 5 bits The bit size of the MCS field is 5 bits; and/or, the presence of 1 bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 0 bits.

Optionally, as an embodiment, each bit state in the 2 bit states indicates a first MCS index; and/or, each bit state in the 4 bit states indicates a first MCS index ; And/or, each bit state in the 8 bit states indicates a first MCS index; and/or, each bit state in the 16 bit states indicates a first MCS index. The determining module 602 is configured to determine the bit size of the MCS field and the first MCS index according to the second information; determine a second MCS index according to the MCS field; according to the first MCS index and The second MCS index determines the MCS index used for the data transmission.

Optionally, as an embodiment, the 2 bit status is: 00010,00011; and/or, the 4 bit status is: 00100 to 00111; and/or, the 8 bit status is: 01000 To 01111; and/or, the 16 bit states are: 10000 to 11111.

Optionally, as an embodiment, the first information includes the second information, and the second information includes 5 bits. The 5 bits are (b0, b1, b2, b3, b4), the b0 is the leftmost bit among the 5 bits, and b4 is the rightmost bit among the 5 bits; The i+1th bit among the 5 bits is bi, the bi=1, and the state of the bits to the left of the bi is 0. The determining module 602 is configured to determine the value of i according to the second information; determine the bit size of the MCS field and the first MCS index according to the value of i; determine the value of the MCS field according to the MCS field The second MCS index; and the MCS index used for the data transmission is determined according to the first MCS index and the second MCS index. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^{(5-(i+1) ))} ).

Optionally, as an embodiment, the bit size of the MCS field is n bits, the first information includes the third information, and the third information is used to indicate the association relationship used by the MCS field, The association relationship is an association relationship between the MCS field and the second MCS index indicated by the MCS field. The used association relationship is one of multiple association relationships, and the multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship. The n is an integer greater than zero. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-contiguous, and the N second MCS indexes Not evenly spaced. The third association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the N second MCS indexes are related The interval between two adjacent second MCS indexes is greater than one. The N is less than or equal to 2 ⁿ . The determining module 602 is configured to determine the MCS index used for the data transmission according to the used association relationship and the MCS field.

Optionally, as an embodiment, the first information further includes the fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used to determine the first MCS index, so The second parameter is used to determine the second MCS index indicated by the MCS field. The determining module is configured to determine the MCS index used for the transmission according to the used correspondence, the first parameter and the second parameter.

Optionally, as an embodiment, the first information includes the fourth information, the fourth information includes a first parameter and a second parameter, the first parameter is used to determine a first MCS index, and the The second parameter is used to determine the second MCS index indicated by the MCS field. The determining module is configured to determine the MCS index used for the transmission according to the first parameter and the second parameter.

Optionally, as an embodiment, the value of the first parameter is related to the bit size included in the MCS field; and/or the value of the second parameter is related to the bit size included in the MCS field Related.

Optionally, as an embodiment, the MCS index used for the data transmission=the first MCS index+the second MCS index.

FIG. 7 is a schematic diagram of another embodiment of a communication device provided by an embodiment of the application. The communication device can be used to implement the functions of the network device or terminal device at the sending end in the foregoing method embodiment, and therefore can also achieve the beneficial effects of the foregoing method embodiment. In the embodiment of the present application, the communication device may be a network device or a terminal device, and may also be a module (such as a chip) applied to the network device or the terminal device.

Referring to FIG. 7, the communication device 70 provided by the embodiment of the present application may include:

The determining module 701 is configured to determine the modulation and coding scheme MCS field in the first information and the downlink control information DCI, and the first information and the MCS field are used by the communication device to determine the MCS index used for data transmission, where all The first information includes at least one of second information, third information or fourth information. The second information is used to indicate the bit size included in the MCS field and the first MCS index. The third information is used to indicate an association relationship used by the MCS field, and the association relationship is an association relationship between the MCS field and a second MCS index indicated by the MCS field. The fourth information includes a first parameter and a second parameter, the first parameter is used to determine a first MCS index, and the second parameter is used to determine a second MCS index indicated by the MCS field;

The sending module 702 is configured to send the first information to a communication device through high-level signaling, and send the DCI through a physical downlink control channel.

Optionally, as an embodiment, the first information includes the second information, and the size of the second information is 5 bits. The second information is used by the communication device to determine the bit size of the MCS field and the first MCS index; determine the first MCS index according to the first MCS index and the second MCS index indicated by the MCS field MCS index used for data transmission. The presence of 2 bit status indications in the 5 bit 32 bit status indicates that the bit size of the MCS field is 4 bits; and/or, the presence of 4 bit status indications in the 5 bit 32 bit status The bit size of the MCS field is 3 bits; and/or, the presence of 8 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 2 bits; and/or, so The presence of 16 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 1 bit; and/or, the presence of 1 bit state indicator in the 32 bit states of the 5 bits The bit size of the MCS field is 5 bits; and/or, the presence of 1 bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 0 bits.

Optionally, as an embodiment, each bit state in the 2 bit states indicates a first MCS index; and/or, each bit state in the 4 bit states indicates a first MCS index ; And/or, each bit state in the 8 bit states indicates a first MCS index; and/or, each bit state in the 16 bit states indicates a first MCS index.

Optionally, as an embodiment, the first information includes the second information, and the second information includes 5 bits. The 5 bits are (b0, b1, b2, b3, b4), the b0 is the leftmost bit among the 5 bits, and b4 is the rightmost bit among the 5 bits. The i+1th bit among the 5 bits is bi, the bi=1, and the state of the bits to the left of the bi is 0. The second information is used by the communication device to determine the value of i; determine the bit size of the MCS field and the first MCS index according to the value of i; according to the first MCS The index and the second MCS index indicated by the MCS field determine the MCS index used for the data transmission. The bit size of the MCS field is (i+1) bits; and/or, the first MCS index=2 ⁽ⁱ⁺¹⁾ * (decimal value indicated by 5 bits-2 ^{(5-(i+1) ))} ).

Optionally, as an embodiment, the bit size of the MCS field is n bits. The first information includes the third information, the third information is used to indicate the association relationship used by the MCS field, and the association relationship is the MCS field and the second MCS index indicated by the MCS field The relationship between. The used association relationship is one of multiple association relationships, and the multiple association relationships include at least one of a first association relationship, a second association relationship, and a third association relationship. The n is an integer greater than zero. The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous. The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-contiguous, and the N second MCS indexes Not evenly spaced. The third association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the N second MCS indexes are related The interval between two adjacent second MCS indexes is greater than 1; the N is less than or equal to 2 ⁿ .

Optionally, as an embodiment, the first information further includes the fourth information. The fourth information includes a first parameter and a second parameter, the first parameter is used by the communication communication device to determine a first MCS index, and the second parameter is used by the communication communication device to determine the MCS field indication The second MCS index. The first information is used by the communication device to determine the MCS index used for the transmission according to the used correspondence, the first parameter, and the second parameter.

Optionally, as an embodiment, the first information includes the fourth information. The fourth information includes a first parameter and a second parameter, the first parameter is used by the communication communication device to determine a first MCS index, and the second parameter is used by the communication communication device to determine the MCS field indication The second MCS index. The first information is used by the communication device to determine the MCS index used for the transmission according to the first parameter and the second parameter.

Optionally, as an embodiment, the first parameter is related to the bit size included in the MCS field; and/or, the second parameter is related to the bit size included in the MCS field.

FIG. 8 is a schematic structural diagram of a possible communication device provided by an embodiment of this application.

As shown in FIG. 8, the communication device 80 includes a processor 810 and an interface circuit 820. The processor 810 and the interface circuit 820 are coupled with each other. It can be understood that the interface circuit 820 may be a transceiver or an input/output interface. Optionally, the communication device 80 may further include a memory 830 for storing instructions executed by the processor 810 or storing input data required by the processor 810 to run the instructions or storing data generated after the processor 810 runs the instructions.

When the communication device 80 is a terminal device at the receiving end, the processor 810 is used to execute the function of the aforementioned determining module 602, and the interface circuit 820 is used to execute the aforementioned function of the receiving module 601.

When the communication device 80 is a communication device (terminal device or network device) at the sending end, the processor 810 is used to execute the function of the above-mentioned determining module 701, and the interface circuit 820 is used to execute the function of the above-mentioned sending module 702.

When the aforementioned communication device is a chip applied to a terminal device at the receiving end, the chip implements the function of the terminal device in the foregoing method embodiment. The terminal device chip receives information from other modules (such as radio frequency modules or antennas) in the terminal device, and the information is sent by the network device at the transmitting end or the terminal device to the terminal device at the receiving end.

When the aforementioned communication device is a chip applied to a network device or a terminal device at the sending end, the chip implements the function of the network device or terminal device at the sending end in the foregoing method embodiment. The chip sends information to the network equipment at the transmitting end or other modules in the terminal equipment (such as a radio frequency module or antenna), and the information is sent by the network equipment or terminal equipment at the transmitting end to the terminal equipment at the receiving end.

It is understandable that the processor in the embodiments of the present application may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSPs), and application-specific integrated circuits. (Application Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

The method steps in the embodiments of the present application can be implemented by hardware, or can be implemented by a processor executing software instructions. Software instructions can be composed of corresponding software modules, which can be stored in Random Access Memory (RAM), Flash memory, Read-Only Memory (ROM), Programmable ROM (Programmable ROM) , PROM), Erasable Programmable Read-Only Memory (Erasable PROM, EPROM), Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM), register, hard disk, mobile hard disk, CD-ROM or well-known in the art Any other form of storage medium. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and can write information to the storage medium. Of course, the storage medium may also be an integral part of the processor. The processor and the storage medium may be located in the ASIC. In addition, the ASIC can be located in a network device or a terminal device. Of course, the processor and the storage medium may also exist as discrete components in the network device or the terminal device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer programs or instructions. When the computer program or instruction is loaded and executed on the computer, the process or function described in the embodiment of the present application is executed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer program or instruction may be stored in a computer-readable storage medium, or transmitted through the computer-readable storage medium. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server integrating one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, and a magnetic tape; it may also be an optical medium, such as a DVD; it may also be a semiconductor medium, such as a solid state disk (SSD).

In the various embodiments of this application, if there is no special description and logical conflict, the terms and/or descriptions between different embodiments are consistent and can be mutually cited. The technical features in different embodiments are based on their inherent Logical relationships can be combined to form new embodiments.

In this application, "at least one" refers to one or more, and "multiple" refers to two or more. "And/or" describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone, where A, B can be singular or plural. In the text description of this application, the character "/" generally indicates that the associated objects before and after are an "or" relationship; in the formula of this application, the character "/" indicates that the associated objects before and after are a kind of "division" Relationship.

It can be understood that the various numbers or letter numbers involved in the embodiments of the present application are only for easy distinction for description, and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

The method for determining modulation and coding and the communication device provided by the embodiments of the present invention are described in detail above. Specific examples are used in this article to explain the principles and implementation of the present invention. The description of the above embodiments is only for help Understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and the scope of application. In summary, the content of this specification does not It should be understood as a limitation of the present invention.

Claims

A method for determining modulation coding, characterized in that it comprises:

Receiving first information and a modulation and coding scheme MCS field in downlink control information DCI sent by a communication device through high-layer signaling, where the first information includes at least one of second information, third information, and fourth information, The second information is used to indicate the bit size included in the MCS field and the first MCS index, and the third information is used to indicate the association relationship used by the MCS field, and the association relationship is the MCS field and the first MCS index. The association relationship between the second MCS index indicated by the MCS field, the fourth information includes a first parameter and a second parameter, the first parameter is used to determine the first MCS index, and the second parameter is used to Determine the second MCS index indicated by the MCS field;

Determine the MCS index used for data transmission according to the first information and the MCS field.
The method according to claim 1, wherein the first information includes the second information, and the size of the second information is 5 bits,

The presence of 2 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 4 bits; and/or,

The presence of 4 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 3 bits; and/or,

The presence of 8 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 2 bits; and/or,

The presence of 16 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 1 bit; and/or,

The presence of one bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 5 bits; and/or,

The presence of 1 bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 0 bits.
The method according to claim 2, wherein:

Each of the 2 bit states indicates a first MCS index; and/or,

Each of the 4 bit states indicates a first MCS index; and/or,

Each of the 8 bit states indicates a first MCS index; and/or,

Each of the 16 bit states indicates a first MCS index;

The determining the MCS index used for data transmission according to the first information and the MCS field includes:

Determine the bit size of the MCS field and the first MCS index according to the second information;

Determine the second MCS index according to the MCS field;

According to the first MCS index and the second MCS index, the MCS index used for the data transmission is determined.
The method according to claim 2 or 3, wherein:

The 2 bit status is: 00010,00011; and/or,

The 4 bit states are: 00100 to 00111; and/or,

The 8 bit states are: 01000 to 01111; and/or,

The 16 bit states are: 10000 to 11111.
The method according to claim 1, wherein the first information includes the second information, the second information includes 5 bits, and the 5 bits are (b0, b1, b2, b3, b4), the b0 is the leftmost bit among the 5 bits, b4 is the rightmost bit among the 5 bits; the i+1th bit among the 5 bits is bi, The bi=1, the status of the bits to the left of the bi are all 0, and determining the MCS index used for data transmission according to the first information and the MCS field includes:

Determine the value of i according to the second information;

Determining the bit size of the MCS field and the first MCS index according to the value of i;

Determine the second MCS index according to the MCS field;

Determine the MCS index used for the data transmission according to the first MCS index and the second MCS index;

The bit size of the MCS field is (i+1) bits; and/or,

The first MCS index=2 (i+1) *(decimal value indicated by 5 bits-2 (5-(i+1)) ).
The method according to claim 1, wherein the bit size of the MCS field is n bits, the first information contains the third information, and the third information is used to indicate the use of the MCS field The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field, the association relationship used is one of a variety of association relationships, and the multiple The type of association relationship includes at least one of a first association relationship, a second association relationship, and a third association relationship, where n is an integer greater than 0,

The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous;

The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-contiguous, and the N second MCS indexes Not equally spaced

The third association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the N second MCS indexes are related The interval between two adjacent second MCS indexes is greater than 1;

The N is less than or equal to 2 n ;

The determining the MCS index used for data transmission according to the first information and the MCS field includes:

Determine the MCS index used for the data transmission according to the used association relationship and the MCS field.
The method according to claim 6, wherein the first information further includes the fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used to determine the first parameter. MCS index, where the second parameter is used to determine the second MCS index indicated by the MCS field,

The determining the MCS index used for data transmission according to the first information and the MCS field includes:

The MCS index used for the transmission is determined according to the used correspondence, the first parameter and the second parameter.
The method according to claim 1, wherein the first information includes the fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used to determine the first MCS Index, where the second parameter is used to determine the second MCS index indicated by the MCS field,

The determining the MCS index used for data transmission according to the first information and the MCS field includes:

Determine the MCS index used for the transmission according to the first parameter and the second parameter.
The method according to claim 7 or 8, wherein:

The value of the first parameter is related to the bit size included in the MCS field; and/or,

The value of the second parameter is related to the bit size included in the MCS field.
According to the method of any one of claims 2-5, 8 and 9, the MCS index used for the data transmission=the first MCS index+the second MCS index.
A method for determining modulation coding, characterized in that it comprises:

Determine the modulation and coding scheme MCS field in the first information and the downlink control information DCI, the first information and the MCS field are used by the communication device to determine the MCS index used for data transmission, wherein the first information includes the first information At least one of second information, third information, and fourth information, the second information is used to indicate the bit size included in the MCS field and the first MCS index, and the third information is used to indicate the MCS field Used association relationship, the association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field, the fourth information includes the first parameter and the second parameter, the first parameter A parameter is used to determine a first MCS index, and the second parameter is used to determine a second MCS index indicated by the MCS field;

The first information is sent to the communication device through high-layer signaling, and the DCI is sent through the physical downlink control channel.
The method according to claim 11, wherein the first information contains the second information, the size of the second information is 5 bits, and the second information is used by the communication device to determine The bit size of the MCS field and the first MCS index; determine the MCS index used for data transmission according to the first MCS index and the second MCS index indicated by the MCS field,

The presence of 2 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 4 bits; and/or,

The presence of 4 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 3 bits; and/or,

The presence of 8 bit states in the 5 bit 32 bit states indicates that the bit size of the MCS field is 2 bits; and/or,

The presence of 16 bit states in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 1 bit; and/or,

The presence of one bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 5 bits; and/or,

The presence of 1 bit state in the 32 bit states of the 5 bits indicates that the bit size of the MCS field is 0 bits.
The method according to claim 12, wherein:

Each of the 2 bit states indicates a first MCS index; and/or,

Each of the 4 bit states indicates a first MCS index; and/or,

Each of the 8 bit states indicates a first MCS index; and/or,

Each of the 16 bit states indicates a first MCS index.
The method according to claim 12 or 13, characterized in that:

The 2 bit status is: 00010,00011; and/or,

The 4 bit states are: 00100 to 00111; and/or,

The 8 bit states are: 01000 to 01111; and/or,

The 16 bit states are: 10000 to 11111.
The method according to claim 11, wherein the first information includes the second information, the second information includes 5 bits, and the 5 bits are (b0, b1, b2, b3, b4), the b0 is the leftmost bit among the 5 bits, b4 is the rightmost bit among the 5 bits; the i+1th bit among the 5 bits is bi, The bi=1, the state of the bits on the left side of the bi is 0,

The second information is used by the communication device to determine the value of i; determine the bit size of the MCS field and the first MCS index according to the value of i; according to the first MCS index And the second MCS index indicated by the MCS field to determine the MCS index used for the data transmission;

The bit size of the MCS field is (i+1) bits; and/or,

The first MCS index=2 (i+1) *(decimal value indicated by 5 bits-2 (5-(i+1)) ).
The method according to claim 11, wherein the bit size of the MCS field is n bits, the first information includes the third information, and the third information is used to indicate the use of the MCS field The association relationship is the association relationship between the MCS field and the second MCS index indicated by the MCS field, the association relationship used is one of a variety of association relationships, and the multiple The type of association relationship includes at least one of a first association relationship, a second association relationship, and a third association relationship, where n is an integer greater than 0,

The first association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, and the N second MCS indexes are continuous;

The second association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are non-contiguous, and the N second MCS indexes The third association relationship: the corresponding relationship between the N bit states corresponding to the n bits and the N second MCS indexes, the N second MCS indexes are equally spaced, and the Nth The interval between two adjacent second MCS indexes in the second MCS index is greater than 1;

The N is less than or equal to 2 n .
The method according to claim 16, wherein the first information further includes the fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used for the communication The device determines the first MCS index, the second parameter is used by the communication device to determine the second MCS index indicated by the MCS field, and the first information is used by the communication device according to the used correspondence, The first parameter and the second parameter determine the MCS index used for the transmission.
The method according to claim 11, wherein the first information includes the fourth information, the fourth information includes a first parameter and a second parameter, and the first parameter is used for the communication device The first MCS index is determined, the second parameter is used by the communication device to determine the second MCS index indicated by the MCS field, and the first information is used by the communication device according to the first parameter and the first parameter. The second parameter determines the MCS index used for the transmission.
The method according to claim 17 or 18, wherein:

The value of the first parameter is related to the bit size included in the MCS field; and/or,

The value of the second parameter is related to the bit size included in the MCS field.
According to the method of any one of claims 12-15, 18, and 19, the MCS index used for the data transmission=the first MCS index+the second MCS index.
A communication device comprising a module for executing the method according to any one of claims 1-10.
A communication device comprising a module for executing the method according to any one of claims 11-20.
A communication device, which is characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal of is sent to another communication device other than the communication device, and the processor is used to implement the method according to any one of claims 1 to 10 through a logic circuit or executing code instructions.
A communication device, which is characterized by comprising a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal of is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 11 to 20 through logic circuits or execution code instructions.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the computer program or instruction is implemented as described in any one of claims 1 to 10 Methods.
A computer-readable storage medium, characterized in that a computer program or instruction is stored in the storage medium, and when the computer program or instruction is executed by a communication device, the computer program or instruction is implemented as described in any one of claims 11 to 20 Methods.