WO2019157649A1

WO2019157649A1 - Communication method and device

Info

Publication number: WO2019157649A1
Application number: PCT/CN2018/076693
Authority: WO
Inventors: 高鲁涛
Original assignee: 华为技术有限公司
Priority date: 2018-02-13
Filing date: 2018-02-13
Publication date: 2019-08-22

Abstract

Provided in the present application are a communication method and device, which may meet reliability requirements according to modulation and coding mode information and the number of repetitions of a transport block. Regarding the number of repetitions of the transport block, since a first index may collectively indicate the modulation and coding mode information and the number of repetitions of the transport block, no additional signaling is required to carry the number of repetitions of the transport block, thus saving signaling overhead. The method comprises: determining a first index, the first index being used to indicate first modulation and coding mode information and the number of repetitions of a transport block; and transmitting the first index to a wireless device, wherein the first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.

Description

Communication method and device

Technical field

The present application relates to the field of communications and, more particularly, to a communication method and apparatus.

Background technique

The Modulation Coding Scheme (MCS) of the existing transport block is the highest modulation coding mode in which the block error rate of the transport block received by the receiving end does not exceed 10 ^-1 . For some services that have high requirements on the block error rate of the transport block, for example, Ultra Reliable Low Latency Communication (URLLC) service, the URLLC service requires a Block-Error Rate (BLER). ) no more than 10 ^-4 or 10 ^-5 . In order to satisfy the service that has high requirements on the block error rate of the transport block, a table for adding a new modulation and coding mode is generally added on the basis of the existing modulation and coding mode table, and the table of the new modulation and coding mode includes lower The coding rate satisfies the reliability requirements of the URLLC service through a lower coding rate. When the network device sends the modulation and coding mode index to the terminal device, it must carry signaling to indicate the table corresponding to the transmitted modulation and coding mode index, so the selection of the new and old forms brings more signaling overhead.

Summary of the invention

The present application provides a communication method and device, which can satisfy the first reliability requirement by using the first modulation and coding mode information and the number of repetitions of the transmission block, since the first index can not only indicate the first modulation The coding mode information may also indicate the number of repetitions of the transport block, so that no additional signaling is required to carry the number of repetitions of the transport block, which saves signaling overhead.

In a first aspect, a communication method is provided, the method comprising: determining a first index, the first index is used to indicate first modulation and coding mode information and a repetition number of a transport block; and transmitting the first index to a wireless device Wherein the first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.

Therefore, the first reliability requirement is met by the first modulation and coding mode information and the number of repetitions of the transport block, and the first index may not only indicate the first modulation and coding mode information, but may also indicate the repetition of the transport block. The number of times, so no additional signaling is required to carry the number of repetitions of the transport block, which saves signaling overhead.

With reference to the first aspect, in some implementations of the first aspect, the first modulation and coding mode information is modulation and coding information used by the transmission block, and the first modulation and coding mode information is modulation of a first transmission block. Encoding information, the first transport block being a set of the transport blocks that repeat the number of repetitions.

With reference to the first aspect, in some implementations of the first aspect, the first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; Or the first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of repetitions of the transmission block are included in a group of information in the third table. in.

In conjunction with the first aspect, in some implementations of the first aspect, the first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition of a transport block Number of times, the number of repetitions of the transport block included in each set of information is one,

The number of repetitions of the transport block included in the at least two sets of information is different,

When the second modulation coding mode order in the first table is smaller than the third modulation coding mode order in the first table, the number of repetitions of the transmission block corresponding to the second modulation coding mode order is greater than or And the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.

At this time, by increasing the number of repetitions of the allowed transport blocks when the modulation coding mode index is lower, it is possible to satisfy some services that have high requirements on the block error rate of the transport block. For example, for a highly reliable and low-latency URLLC service, in order to satisfy high reliability, a coding mode with a lower modulation index and a lower order modulation mode is generally selected, and in the prior art, a modulation coding mode index is used. The lower the number of repetitions of the transport block, the less the number of repetitions specified in the corresponding system in the case of the same size of each transport block. In the present application, the lower the modulation coding mode index is, the more the repetition order of the transmission block is allowed when the modulation order is low, and the repetition times corresponding to the same modulation coding mode are unequal intervals, in particular, the lower order modulation The coding mode corresponds to more repetitions, and more types of repetitions for lower-order MCS can also be used to add lower-order MCS, thereby determining a more suitable MCS for the URLLC service to satisfy the highly reliable and low-latency URLLC service. Reliability requirements.

With reference to the first aspect, in some implementations of the first aspect, in any two sets of information included in the first table, a group of information having a smaller order of modulation coding mode includes a transmission block having a repetition number greater than Or the number of repetitions of the transport block included in another set of information having a larger order of modulation coding mode.

In conjunction with the first aspect, in some implementations of the first aspect, the second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation coding mode information,

The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is One;

The at least two sets of information include different transmission block repetition times;

When the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second modulation coding mode order corresponds to the third table The number of repetitions of the transport block is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.

With reference to the first aspect, in some implementations of the first aspect, in the two sets of information included in the second table, the number of repetitions of the transport block corresponding to a group of information having a smaller order of the modulation coding mode is greater than or The number of repetitions of the transport block corresponding to another set of information having a larger order of modulation coding mode.

In conjunction with the first aspect, in some implementations of the first aspect, the first table belongs to a first set of information;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one;

The maximum number of repetitions of the transport block included in the at least two sets of information is different;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order is smaller than the second modulation coding mode information included in the second information coding mode information in the first information set, The maximum number of repetitions of the transport block corresponding to the first modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information,

The first table includes at least one index, and modulation and coding mode information corresponding to the at least one index and a repetition number of the transmission block.

At this time, by the higher the modulation order, the maximum number of repetitions of the allowed transport blocks is larger, and thus some services having higher requirements on the block error rate of the transport block can be satisfied. For example, for a highly reliable and low-latency URLLC service, in order to satisfy high reliability, a coding mode with a lower modulation index and a lower order modulation mode is generally selected, and in the prior art, a modulation coding mode index is used. The lower the number of repetitions of the transport block, the less the number of repetitions specified in the corresponding system in the case of the same size of each transport block. In the present application, the lower the modulation coding mode index is, the more the repetition order of the transmission block is allowed when the modulation order is low, and the repetition times corresponding to the same modulation coding mode are unequal intervals, in particular, the lower order modulation The coding mode corresponds to more repetitions, and more types of repetitions for lower-order MCS can also be used to add lower-order MCS, thereby determining a more suitable MCS for the URLLC service to satisfy the highly reliable and low-latency URLLC service. Reliability requirements.

With reference to the first aspect, in some implementation manners of the first aspect, the maximum number of repetitions of the transport block corresponding to a group of information with a smaller order of the modulation coding mode in the two sets of information included in the first information set The maximum number of repetitions of the transport block corresponding to another group of information that is greater than or equal to the modulation coding mode.

With reference to the first aspect, in some implementations of the first aspect, the number of repetitions of the transport block corresponding to the second modulation and coding mode information is a subset of the number of repetitions of the transport block corresponding to the first modulation and coding mode information. .

With reference to the first aspect, in some implementation manners of the first aspect, in any two sets of information included in the first information set, a repetition of a transmission block included in a group of information having a larger order of modulation coding mode A subset of the number of repetitions of a transport block included in another set of information having a smaller order of modulation.

With reference to the first aspect, in some implementations of the first aspect, when the first modulation and coding mode information includes a modulation order that is smaller than a modulation order included in the second modulation and coding mode information, the first The maximum number of repetitions of the transport block corresponding to the modulation and coding scheme information is greater than the maximum number of repetitions of the transport block corresponding to the second modulation and coding scheme information.

In conjunction with the first aspect, in some implementations of the first aspect, the first modulation coding mode order is less than the second modulation coding mode order includes:

The first modulation order is less than the second modulation order; or

The first modulation order is the same as the second modulation order, and the first code rate is less than the second code rate; or

The index corresponding to the order of the first modulation and coding mode is smaller than the index corresponding to the order of the second modulation and coding mode;

The first modulation and coding mode information includes the first modulation order and the first code rate, and the second modulation and coding mode information includes the second modulation order and the second code rate.

In conjunction with the first aspect, in some implementations of the first aspect, the first table belongs to a first set of information, the first set of information includes at least two sets of information, each of the at least two sets of information And including the modulation coding mode information and the number of repetitions of the transmission block, the number of repetitions of the transmission block is at least one repetition number, and the number of repetitions of the transmission block included in the at least two sets of information is not completely the same, and the first table includes at least An index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

In conjunction with the first aspect, in some implementations of the first aspect, the network device can determine the first index based on the channel state information and the first reliability requirement.

With reference to the first aspect, in some implementations of the first aspect, before the network device can determine the first index according to the channel state information and the first reliability requirement, the network device receives channel state information sent by the wireless device. .

In conjunction with the first aspect, in some implementations of the first aspect, the first modulation and coding mode information further includes at least one or more of the following parameters:

Modulation order, coding rate, and size of the transport block.

A second aspect provides a communication method, including: receiving a first index sent by a network device, where the first index is used to indicate first modulation and coding mode information and a repetition number of a transport block; and according to the first index indication The first modulation and coding mode information demodulates the transport block, wherein the first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.

With reference to the second aspect, in some implementations of the second aspect, the first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

The first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of transmission block repetitions are included in a group of information in the third table. .

In conjunction with the second aspect, in some implementations of the second aspect, the first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition of a transport block Number of times, the number of repetitions of the transport block included in each set of information is one; the number of repetitions of the transport block included in the at least two sets of information is different; when the second modulation code in the first table When the mode order is smaller than the third modulation coding mode order in the first table, the repetition number of the transport block corresponding to the second modulation coding mode order is greater than or equal to the third modulation coding mode order The number of repetitions of the transport block.

With reference to the second aspect, in some implementations of the second aspect, in any two sets of information included in the first table, a group of information having a smaller modulation coding mode has a transmission block having a repetition number greater than Or the number of repetitions of the transport block included in another set of information having a larger order of modulation coding mode.

With reference to the second aspect, in some implementations of the second aspect, the second table includes at least two sets of information, each of the at least two sets of information includes an index, and modulation and coding mode information, the The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is one; The at least two sets of information include different transmission block repetition times; when the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second The number of repetitions of the transport block in the third table corresponding to the order of the modulation coding mode is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.

With reference to the second aspect, in some implementations of the second aspect, in the two sets of information included in the second table, the number of repetitions of the transport block corresponding to a group of information having a smaller order of modulation coding mode is greater than or The number of repetitions of the transport block corresponding to another set of information having a larger order of modulation coding mode.

With reference to the second aspect, in some implementations of the second aspect, the first table belongs to the first information set;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one; the maximum number of repetitions of the transmission block included in the at least two sets of information is different; the first modulation coding mode information in the first information set includes a first modulation coding mode order that is smaller than the first When the second modulation coding mode information in the information set includes the second modulation coding mode order, the maximum repetition number of the transmission block corresponding to the first modulation coding mode information is greater than or equal to the second modulation coding mode information. a maximum number of repetitions of the transport block, the first table including at least one index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

With reference to the second aspect, in some implementation manners of the second aspect, the maximum number of repetitions of the transport block corresponding to a group of information with a smaller order of the modulation coding mode in the two sets of information included in the first information set The maximum number of repetitions of the transport block corresponding to another group of information that is greater than or equal to the modulation coding mode.

With reference to the second aspect, in some implementations of the second aspect, the second modulation coding mode information includes a repetition number of the transmission block that is a subset of the repetition number of the transmission block included in the first modulation and coding mode information. .

With reference to the second aspect, in some implementations of the second aspect, when the first modulation and coding mode information includes a modulation order that is smaller than a modulation order included in the second modulation and coding mode information, the first The modulation coding mode information includes a maximum number of repetitions of the transport block that is greater than a maximum number of repetitions of the transport block included in the second modulation and coding scheme information.

With reference to the second aspect, in some implementations of the second aspect, the first modulation coding mode order is smaller than the second modulation coding mode order, the first modulation order is smaller than the second modulation order Or the first modulation order and the second modulation order are the same, and the first code rate is smaller than the second code rate; or the index corresponding to the first modulation coding mode order is smaller than the second modulation code The index corresponding to the mode order;

In conjunction with the second aspect, in some implementations of the second aspect, the first table belongs to a first set of information, the first set of information includes at least two sets of information, each of the at least two sets of information And including the modulation coding mode information and the number of repetitions of the transmission block, the number of repetitions of the transmission block is at least one repetition number, and the number of repetitions of the transmission block included in the at least two sets of information is not completely the same, and the first table includes at least An index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

In a third aspect, a network device is provided, including:

a determining module, configured to determine a first index, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block;

a sending module, configured to send the first index to a wireless device;

The first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.

With reference to the third aspect, in some implementations of the third aspect, the first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

In conjunction with the third aspect, in some implementations of the third aspect, the first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition of a transport block Number of times, the number of repetitions of the transport block included in each set of information is one; the number of repetitions of the transport block included in the at least two sets of information is different; when the second modulation code in the first table When the mode order is smaller than the third modulation coding mode order in the first table, the repetition number of the transport block corresponding to the second modulation coding mode order is greater than or equal to the third modulation coding mode order The number of repetitions of the transport block.

In conjunction with the third aspect, in some implementations of the third aspect, the second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation and coding mode information, the The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is one; The at least two sets of information include different transmission block repetition times; when the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second The number of repetitions of the transport block in the third table corresponding to the order of the modulation coding mode is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.

In conjunction with the third aspect, in some implementations of the third aspect, the first table belongs to a first set of information;

With reference to the third aspect, in some implementations of the third aspect, the number of repetitions of the transport block corresponding to the second modulation and coding mode information is a subset of the number of repetitions of the transport block corresponding to the first modulation and coding mode information. .

With reference to the third aspect, in some implementations of the third aspect, when the first modulation and coding mode information includes a modulation order that is smaller than a modulation order included in the second modulation and coding mode information, the first The maximum number of repetitions of the transport block corresponding to the modulation and coding scheme information is greater than the maximum number of repetitions of the transport block corresponding to the second modulation and coding scheme information.

In conjunction with the third aspect, in some implementations of the third aspect, the first modulation coding mode order is less than the second modulation coding mode order includes:

The first modulation order is less than the second modulation order; or

In conjunction with the third aspect, in some implementations of the third aspect, the first table belongs to a first set of information, the first set of information includes at least two sets of information, each of the at least two sets of information And including the modulation coding mode information and the number of repetitions of the transmission block, the number of repetitions of the transmission block is at least one repetition number, and the number of repetitions of the transmission block included in the at least two sets of information is not completely the same, and the first table includes at least An index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

In a fourth aspect, a wireless device is provided, including:

a receiving module, configured to receive a first index sent by the network device, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block;

a processing module, configured to demodulate the transport block according to the first modulation and coding mode information indicated by the first index;

The wireless device in the fourth aspect may be the terminal device itself, or an element or a chip in the terminal device, or may be a device or component that is externally disposed outside the terminal device.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; Or the first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of repetitions of the transmission block are included in a group of information in the third table. in.

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition of a transport block Number of times, the number of repetitions of the transport block included in each set of information is one; the number of repetitions of the transport block included in the at least two sets of information is different; when the second modulation code in the first table When the mode order is smaller than the third modulation coding mode order in the first table, the repetition number of the transport block corresponding to the second modulation coding mode order is greater than or equal to the third modulation coding mode order The number of repetitions of the transport block.

With reference to the fourth aspect, in some implementations of the fourth aspect, the second table includes at least two sets of information, each of the at least two sets of information includes an index, and modulation and coding mode information, where The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is one; The at least two sets of information include different transmission block repetition times; when the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second The number of repetitions of the transport block in the third table corresponding to the order of the modulation coding mode is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.

With reference to the fourth aspect, in some implementations of the fourth aspect, the first table belongs to a first information set;

With reference to the fourth aspect, in some implementations of the fourth aspect, the second modulation coding mode information includes a repetition number of the transmission block that is a subset of the repetition times of the transmission block included in the first modulation and coding mode information. .

With reference to the fourth aspect, in some implementations of the fourth aspect, when the first modulation and coding mode information includes a modulation order that is smaller than a modulation order included in the second modulation and coding mode information, the first The modulation coding mode information includes a maximum number of repetitions of the transport block that is greater than a maximum number of repetitions of the transport block included in the second modulation and coding scheme information.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the first modulation coding mode order is less than the second modulation coding mode order includes:

The first modulation order is less than the second modulation order; or

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the first table belongs to a first information set, the first information set includes at least two sets of information, each of the at least two sets of information And including the modulation coding mode information and the number of repetitions of the transmission block, the number of repetitions of the transmission block is at least one repetition number, and the number of repetitions of the transmission block included in the at least two sets of information is not completely the same, and the first table includes at least An index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

In a fifth aspect, a network device is provided, comprising: at least one processor, a memory and a transceiver, the memory for storing instructions, the transceiver for communicating with the network device and other devices, the stored instructions Executing directly or indirectly by the at least one processor, such that the network device can perform the method of the first aspect or any alternative implementation of the first aspect.

In a sixth aspect, a wireless device is provided, comprising: at least one processor for storing instructions, said transceiver for communicating with said other wireless device, said stored instructions Executing directly or indirectly by the at least one processor, such that the wireless device can perform the method of any of the alternative aspects of the second aspect or the second aspect.

In a seventh aspect, a chip system is provided, comprising: at least one processor, the at least one processor for executing stored instructions to enable a network device to perform the first aspect or any optional implementation of the first aspect The method in the way.

In an eighth aspect, a chip system is provided, comprising: at least one processor, the at least one processor for executing stored instructions to enable a wireless device to perform any of the optional implementations of the second aspect or the second aspect The method in the way.

In a ninth aspect, a computer program product is provided, the computer program product comprising instructions that, when executed, cause a network device to perform the first aspect or any of the alternative implementations of the first aspect method.

In a tenth aspect, a computer program product is provided, the computer program product comprising instructions that, when executed, cause a wireless device to perform the second aspect or any of the alternative implementations of the second aspect method.

In an eleventh aspect, a computer storage medium is provided, the computer storage medium storing program instructions, when the instructions are executed, the network device can perform the first aspect or any of the optional implementations of the first aspect Methods.

According to a twelfth aspect, a computer storage medium is provided, the computer storage medium storing program instructions, when the instructions are executed, the wireless device can perform the second aspect or any of the optional implementations of the second aspect Methods.

DRAWINGS

1 shows a schematic diagram of a communication system using a communication method and apparatus of the present application.

FIG. 2 shows a schematic flow chart of a communication method of the present application.

FIG. 3 shows a schematic block diagram of a network device of the present application.

FIG. 4 shows a schematic block diagram of a wireless device of the present application.

FIG. 5 shows a schematic block diagram of a communication device provided by the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

1 is a schematic diagram of a communication system using a method and apparatus for wireless communication of the present application. As shown in FIG. 1, the communication system 100 includes a network device 102, which may include multiple antennas, such as

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).

Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that network device 102 can communicate with any number of target terminal devices similar to

terminal device

116 or 122.

As shown in FIG. 1, terminal device 116 is in communication with

antennas

112 and 114, wherein

antennas

112 and 114 transmit information to terminal device 116 over forward link 118 and receive information from terminal device 116 over reverse link 120. In addition, terminal device 122 is in communication with

antennas

104 and 106, wherein

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

For example, in a Frequency Division Duplex (FDD) system, for example, forward link 118 can use a different frequency band than reverse link 120, and forward link 124 can be used differently than reverse link 126. Frequency band.

As another example, in a Time Division Duplex (TDD) system and a Full Duplex (FD) system, the forward link 118 and the reverse link 120 can use a common frequency band, the forward link 124 and Reverse link 126 can use a common frequency band.

Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area. In the process in which network device 102 communicates with

terminal devices

116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of network device 102 may utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. In addition, when the network device 102 uses beamforming to transmit signals to the randomly dispersed

terminal devices

116 and 122 in the relevant coverage area, the network device 102 uses a single antenna to transmit signals to all of its terminal devices. Mobile devices are subject to less interference.

At a given time, network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode the data for transmission. In particular, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of target data bits to be transmitted to the wireless communication receiving device over the channel. Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.

The Modulation Coding Scheme (MCS) of the existing transport block is the highest modulation coding mode in which the block error rate of the transport block received by the receiving end does not exceed 10 ^-1 . However, some services have higher requirements on the block error rate of the transport block. For example, the URLLC service with high reliability and low latency is defined in 5G, the end-to-end delay requirement is less than 1 ms, and the target block error rate BLER does not exceed 10 ^-4. Or 10 ^-5 . The high reliability and low latency URLLC service is mainly used in the fields of automatic driving, remote control, industrial control, tactile interconnection, VR, etc., so it is necessary to solve the problem of providing a communication method to solve some block error rate of the transmission block. Required business.

In order to satisfy the service that has high requirements on the block error rate of the transport block, a table for adding a new modulation and coding mode is generally added to the existing modulation and coding mode table, and the table of the new modulation and coding mode includes more Low coding rate. However, the choice of new and old forms brings more signaling overhead.

In the prior art, the transport block size (TBS) is bound to the number of repetitions of the Physical Downlink Shared Channel (PDSCH) carrying the system information, and the transmission is simultaneously indicated by a new index. Block size and number of repetitions. This binding rule is an indiscriminate uniform distribution, that is, one transport block size corresponds to the number of repetitions of all PDSCHs allowed in the system. As shown in Table 1, Table 1 shows the binding relationship between the transport block size and the number of repetitions of the physical downlink control channel carrying system information, which is indicated by a new index.

Table 1 Binding relationship between the transport block size and the number of repetitions of the physical downlink control channel carrying system information

索引index	物理下行控制信道的重复次数Number of repetitions of the physical downlink control channel	传输块大小Transport block size
00	N/AN/A	N/AN/A
11	44	208208
22	88	208208
33	1616	208208
44	44	256256
55	88	256256
66	1616	256256
77	44	328328
88	88	328328
99	1616	328328
1010	44	504504
1111	88	504504
1212	1616	504504
1313	44	712712
1414	88	712712
1515	1616	712712
1616	44	936936
1717	88	936936
1818	1616	936936
19-3119-31	ReservedReserved	ReservedReserved

In Table 1, it can be seen that when the transport block size is the same, the number of repetitions of the three physical downlink control channels of 4, 8, and 16 respectively is corresponding, and each transport block size corresponds to the number of repetitions of all PDSCHs allowed in the system. .

In addition, the communication system 100 may be a public land mobile network (PLMN) network or other network. FIG. 1 is only a simplified schematic diagram of an example, and the network may also include other network devices, which are not shown in FIG. .

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access. (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.

The terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or in the future evolution of the Public Land Mobile Network (PLMN) The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA). Base Transceiver Station (BTS), which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future. The network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.

It should be noted that the character “/” in the present application generally indicates that the context related object is an “or” relationship.

For a better understanding of the present application, the present application will be described below with reference to FIGS. 2-5, with the same or similar system as the system shown in FIG.

2 is a schematic flow chart of a communication method 200 of the present application. As shown in FIG. 2, the method 200 includes the following.

In 210, the network device determines a first index, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block, where the first modulation and coding mode information and the number of repetitions of the transport block correspond to A reliability requirement.

Specifically, the number of repetitions of the transport block is the total number of transmissions of the transport block. If the number of repetitions of one transport block is 4, the transport block is transmitted a total of 4 times.

It should be understood that the first index may also be referred to as a first modulation coding mode index.

At 220, the network device transmits the first index to a wireless device.

In 230, the wireless device receives the first index sent by the network device.

In 240, the wireless device demodulates the transport block according to the first modulation and coding mode information indicated by the first index.

Therefore, in the embodiment of the present application, the first reliability requirement is met by the first modulation and coding mode information and the number of repetitions of the transport block, and the first index may not only indicate the first modulation and coding mode information, but also The number of repetitions of the transport block can be indicated, so that no additional signaling is required to carry the number of repetitions of the transport block, which saves signaling overhead.

Optionally, the wireless device may be the terminal device itself, or an element or a chip in the terminal device, or may be a device or component that is externally disposed outside the terminal device.

Optionally, the first modulation and coding mode information includes at least one or more of the following parameters: a modulation order, a code rate, and a size of a transport block.

Optionally, the first modulation and coding mode information is modulation and coding information used by the transport block, where the first modulation and coding mode information is modulation and coding information of the first transport block, and the first transport block is the one that repeats the number of repetitions. A collection of transport blocks.

Optionally, the first reliability requirement may be a Block-Error Rate (BLER) or a Bit-Error Rate (BER).

It should be understood that the block error rate and the bit error rate proposed by the present application are only used as examples, and do not constitute any limitation on the first reliability requirement, and the first reliability requirement may also be other reliability requirements.

Optionally, the first index, the first modulation and coding mode information, and the repetition number of the transport block are included in a group of information in the first table; or the first index and the first modulation and coding mode information are included in In a set of information in the second table, and the first index and the number of repetitions of the transport block are included in a set of information in the third table.

Specifically, the first index, the first modulation and coding mode information, and the number of repetitions of the transport block may be included in a table, that is, the first table, as shown in Table 2, the first index, the first modulation The encoding mode information and the number of repetitions of the transport block are included in a set of information in the first table, which is a row of information in Table 2. It should be understood that the set of information or each set of information described in this application is a row of information in a table.

Table 2 Relationship between MCS index and modulation and coding mode information and transmission block repetition times

The first index and the first modulation and coding mode information may be included in one table, that is, the second table, as shown in Table 3. The first index and the number of repetitions of the transport block may be included in a table, that is, the third table, as shown in Table 4.

Table 3 MCS index and modulation and coding mode information relationship table

Table 4 Relationship between MCS index and transport block repetition times

It should be understood that in Table 2 and Table 3, only the modulation order included in the modulation and coding mode information is shown, and the parameters including the remaining modulation and coding mode information, such as the code rate and the transmission block size, are not shown, Table 2 above. And Table 3 is only used as an example, and does not constitute any limitation on the modulation and coding mode information.

At this time, by establishing the relationship between the modulation coding mode index and the number of repetitions of the transmission block, different reliability requirements can be compatible.

In this application, the correspondence between the first index, the first modulation and coding mode information, and the number of repetitions of the transport block is not limited to the first index, the first modulation and coding mode information, and the repetition of the transport block. The number of times must be in a table, so that the correspondence between the first index, the first modulation and coding mode information, and the number of repetitions of the transport block is made more flexible.

It should be understood that the modulation coding mode index and the number of repetitions of the transmission block may also have other corresponding manners, as shown in the formula (1):

R=f(x) (1)

Where x is the first coding mode index, and R is the repetition number of the transmission block, and the number of repetitions of the transmission block can be determined by the first coding mode index x and the formula (1).

It should also be understood that equation (1) is only used as an example, and the modulation coding mode index may be different from the number of repetitions of the transport block as different for reliability requirements.

It should also be understood that the correspondence between the modulation and coding mode index and the number of repetitions of the transport block may have other forms, which is not limited in this application.

Optionally, the first table includes at least two sets of information, each of the at least two sets of information includes an index, modulation and coding mode information, and a repetition number of the transport block, and the repetition of the transport block included in each set of information The number of times is one, and the number of repetitions of the transmission block included in the at least two sets of information is different, when the order of the second modulation coding mode in the first table is smaller than the order of the third modulation coding mode in the first table. And the number of repetitions of the transport block corresponding to the order of the second modulation and coding mode is greater than or equal to the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.

Specifically, as shown in Table 2 above, the first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition number of the transport block. The number of repetitions of the transport blocks included in the at least two sets of information is different. When the second index 7 in the first table is smaller than the third index 8, the repetition number 8 of the transport block corresponding to the second index is greater than the repetition number 4 of the transport block corresponding to the third index; When the second index 6 in the table is smaller than the third index 7, the number 8 of repetitions of the transport block corresponding to the second index is equal to the number 8 of repetitions of the transport block corresponding to the third index.

It should be understood that the content categories included in each set of modulation and coding mode information are consistent, for example, including modulation order, coding rate, and number of repetitions. However, the specific modulation order and the coding rate of the two are not exactly the same. For example, the first group of modulation and coding mode information is: the modulation order is Quadrature Phase Shift Keying (QPSK), and the coding rate is 0.2; The second group of modulation and coding mode information is: the modulation order is QPSK, and the coding rate is 0.3. The first set of modulation and coding scheme information and the second set of modulation and coding scheme information have the same modulation order but different coding rates.

Optionally, the network device determines the first index from the first table according to channel state information and reliability requirements.

Specifically, the channel state information includes a Rank Indicator (RI), a Precoding-Matrix Indicator (PMI), and a Channel Quality Indicator (CQI). In order to select a suitable modulation mode and channel coding rate for the transport block, the network device needs to know the information of the radio channel quality, and select different modulation and coding modes according to different channel quality information. For the downlink, the network device transmits the downlink reference signal at a constant power, and the wireless device performs the estimation of the downlink channel quality according to the downlink reference signal. The existing communication protocol quantizes the channel quality into a total of 16 levels from 0-15, and defines the 16 levels as channel quality indications (CQI), which correspond to channel quality from bad to good, respectively. The wireless device maps the estimation result of the downlink channel quality to CQI and feeds back to the network device. For the uplink, the wireless device transmits the uplink reference signal at a constant power, and the network device performs an estimation of the uplink channel quality according to the uplink reference signal, thereby obtaining channel state information of the uplink.

After acquiring the channel state of the uplink or the downlink, the network device selects a modulation coding mode of the appropriate transport block and a repetition number of the transport block according to the first reliability requirement.

It should be understood that the modulation and coding mode corresponding to the CQI fed back by the wireless device is only used as a reference for network device scheduling. In practice, the network device considers some information other than the channel state for scheduling.

Optionally, before 210, the method 200 further includes: the network device receiving channel state information sent by the wireless device.

Optionally, the second table includes at least two sets of information, each of the at least two sets of information includes an index, and modulation and coding mode information, the third table includes at least two sets of information, where the at least two sets of information Each set of information includes an index, and a repetition number of the transport block, the number of repetitions of the transport block included in each set of information is one; the at least two sets of information include different transport block repetition times; when the second form When the order of the second modulation coding mode is smaller than the third modulation coding mode order in the second table, the repetition number of the transmission block in the third table corresponding to the second modulation coding mode order is greater than or equal to the The number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.

Specifically, as shown in Table 3 above, the second table includes at least two sets of information, each of the at least two sets of information including index and modulation and coding mode information. As shown in the above table 4, when the third table includes the second index 7 is smaller than the third index 8, the number of repetitions of the transport block corresponding to the second index is greater than the number of repetitions 4 of the transport block corresponding to the third index; When the second index 6 in the third table is smaller than the third index 7, the repetition number 8 of the transport block corresponding to the second index is equal to the repetition number 8 of the transport block corresponding to the third index.

It should be understood that the network device may determine the first index from the second table and the third table based on channel state information and reliability requirements.

It should be understood that, in the present application, the number of repetitions of the transport block included in each group of information is one, that is, the number of repetitions of the repetition is one, as in each row of information in Table 2, Table 3, and Table 4. The number of repetitions shown is one. For example, the transport block of one line of information has been repeated 8 times, and the transport block of another line of information has been repeated 4 times, but the transport block that does not have a line of information at the same time can be repeated 8 It can also be repeated 4 times.

Optionally, the first table belongs to the first information set; the first information set includes at least two sets of information, each of the at least two sets of information includes modulation coding mode information and a repetition number of the transmission block, each group The number of repetitions of the transport block in the information is at least one;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order that is smaller than the second modulation coding mode order included in the second modulation coding mode information in the first information set, the first The maximum number of repetitions of the transport block corresponding to the modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information,

The first table includes at least one index, and modulation coding mode information corresponding to the at least one index and a repetition number of the transmission block.

Specifically, as shown in Table 5, Table 5 shows a representation of the first set of information, and the first set of information may have other representations. In Table 5, the information of each group includes modulation coding mode information and the number of repetitions of the transmission block, and the number of repetitions of the transmission block is at least one repetition number. As shown in Table 5, each group of modulation orders and the transport block corresponding to the TBS index. The number of repetitions may be 1, 2, 4 or 8, or may be 1, 2 or 4. In Table 5, the maximum number of repetitions of the transport block included in the at least two sets of information is different, and the first modulation and coding mode information in the first information set includes a first modulation coding mode order that is smaller than the first information set. When the second modulation coding mode information includes the second modulation coding mode order, the maximum repetition number of the transmission block corresponding to the first modulation coding mode information is greater than or equal to the maximum repetition of the transmission block corresponding to the second modulation coding mode information. frequency.

Table 5 First information set

Optionally, the network device determines the first table from the first information set according to the service type, the wireless device type, and the like.

Specifically, the network device determines at least one set of information from the first information set according to the service type and the wireless device type, and the at least one set of information corresponds to an index, as shown in Table 1, when the service type is URLLC. During the service, the network device selects multiple sets of information suitable for the URLLC service from the first information set, and the each set of information corresponds to one index.

Optionally, the network device determines the first table from the first information set according to the service type and the wireless device type, and is generally first performed by a higher layer (such as a radio resource control (RRC) signaling or a media access control layer. Layer (Media Access Control, MAC) signaling, etc., the present application does not limit the form or type of the signaling. Selecting certain items from the first information set to form the first table, and the network device is from the first table. Determine a suitable modulation and coding method. As shown in Table 6, Table 6 is the first table determined from the first set of information.

Table 6 Relationship between MCS index, modulation order, TBS index and number of transmission block repetitions

It should be understood that each set of information in the first set of information may also include an index of the set of information. However, the index in the first information combination is different from the index in the first table, and the index in the first table is not an index corresponding to each group of information in the first information set.

Optionally, the first modulation and coding mode information in the first information set includes a first modulation coding mode order that is smaller than a second modulation coding mode order included in the second modulation and coding mode information in the first information set. The number of repetitions of the transport block corresponding to the second modulation and coding scheme information is a subset of the number of repetitions of the transport block corresponding to the first modulation and coding scheme information.

Specifically, as shown in Table 7, Table 7 shows that the first modulation and coding mode information in the first information set includes a first modulation coding mode order that is smaller than the second modulation and coding mode in the first information set. When the information includes the second modulation coding mode order, the number of repetitions of the transmission block corresponding to the second modulation and coding mode information is a subset of the repetition times of the transmission block corresponding to the first modulation and coding mode information, for example, the modulation order is At 2 o'clock, the number of repetitions is 1, 2, 4 or 8. When the modulation order is 4, the number of repetitions is 1, 2 or 4.

Table 7 First information set

Optionally, when the modulation order of the first modulation and coding mode information is smaller than the modulation order of the second modulation and coding mode information, the maximum number of repetitions of the transmission block corresponding to the first modulation and coding mode information is greater than the first The maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information.

Table 8 First information set

Specifically, as shown in Table 8, when the modulation order is 2, the number of repetitions of the transmission block corresponding to the modulation order is 1, 2, 4, or 8, and the maximum number of repetitions is 8, when the modulation order is 4. The number of repetitions of the transmission block corresponding to the modulation order is 1, 2 or 4, and the maximum number of repetitions is 4, that is, when the modulation order of the first modulation and coding mode information is smaller than the modulation order of the information of the second modulation and coding mode. The maximum number of repetitions of the transport block corresponding to the first modulation and coding scheme information is greater than the maximum number of repetitions of the transport block corresponding to the second modulation and coding scheme information.

Optionally, the order of the first modulation and coding mode is smaller than the order of the second modulation and coding mode, including:

The first modulation order is less than the second modulation order; or

Specifically, there are three cases of how to determine the modulation coding mode order. First, when the modulation order is smaller, the modulation coding mode order can be considered to be smaller; secondly, when the modulation order is the same, and the code rate is smaller, the modulation coding mode order can be considered to be smaller; third, when the modulation coding mode is used The smaller the index corresponding to the order, the smaller the order of the modulation coding mode can be considered.

Optionally, the first table belongs to a first information set, where the first information set includes at least two sets of information, each of the at least two sets of information includes modulation coding mode information and a repetition number of the transmission block, the transmission block The number of repetitions is at least one repetition number, the number of repetitions of the transport blocks included in the at least two sets of information is not completely identical, the first table includes at least one index, and modulation coding mode information and a transport block corresponding to the at least one index a number of repetitions.

Table 9 First information set

Specifically, as shown in Table 9, in Table 9, the information of each group includes modulation coding mode information and the number of repetitions of the transmission block, and the number of repetitions of the transmission block is at least one repetition number, as shown in Table 9, each group The number of repetitions of the transmission block corresponding to the modulation order and the TBS index may be 1, 2, 4 or 8, or may be 1, 2 or 4, or may be 1, 2 or 8, or the like.

Specifically, after transmitting, by the network device, the first index, the network device sends a transport block to the wireless device, where the transport block carries data information. The wireless device receives the transport block and demodulates the transport block according to first modulation coding mode information indicated by the first index.

The first modulation and coding mode information of the transport block indicated by the modulation and coding mode index may be interpreted in two ways.

First, the actual modulation and coding mode is a modulation and coding mode included in the first modulation and coding mode information, where the coding rate is a coding rate of each transmission block in the repeatedly transmitted transmission block; and the modulation and coding mode also corresponds to one The number of repetitions.

For example, the first modulation and coding mode information includes a modulation and coding mode parameter: QPSK, a code rate of 0.4, and a repetition number of four times, the wireless device interprets the transmission block transmission four times, and each of the four transmission blocks transmits the block. The code rate is 0.4.

Second, the actual modulation and coding mode is a new modulation and coding mode determined by the first modulation and coding mode information, and indicates a modulation and coding mode of all transmission blocks after repetition. The code rate of all the transport blocks after the repetition is the code rate included in the first modulation and coding mode information divided by the number of repetitions of the transport block.

For example, the modulation coding mode of the current transport block is: the modulation mode is QPSK, the code rate is 0.4, and the current transport block is repeated 4 times. Since the used resource is 4 times of the original, the code rate becomes 1/4 of the original. That is, the actual modulation and coding mode of the four transport blocks is: modulation mode QPSK, and the code rate is 0.1.

FIG. 3 is a schematic block diagram of a network device 300 in accordance with the present application. As shown in FIG. 3, the network device includes the following modules.

The determining module 310 is configured to determine a first index, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block, where the first modulation and coding mode information and the number of repetitions of the transport block correspond to A reliability requirement.

The sending module 320 is configured to send the first index to the wireless device.

Optionally, the determining module 310 and the sending module 320 are used to perform various operations of a communication method 200 of the present application. For brevity, details are not described herein again.

4 is a schematic block diagram of a wireless device 400 in accordance with the present application. As shown in Figure 4, the wireless device includes the following modules.

The receiving module 410 is configured to receive a first index sent by the network device, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block, where the first modulation and coding mode information and the transmission block are repeated. The number of times corresponds to the first reliability requirement.

The processing module 420 is configured to demodulate the transport block according to the first modulation and coding mode information indicated by the first index.

Optionally, the receiving module 410 and the processing module 420 are used to perform various operations of a communication method 200 of the present application. For brevity, details are not described herein again.

The foregoing network device is completely corresponding to the network device in the method embodiment. The foregoing wireless device may refer to the wireless device in the method embodiment, and the corresponding step is performed by the corresponding module. For details, refer to the corresponding method embodiment.

FIG. 5 shows a schematic block diagram of a communication device 500 provided by the present application, the communication device 500 comprising:

a memory 510, configured to store a program, where the program includes a code;

a receiver 520, configured to receive signals of other devices;

a transmitter 530, configured to transmit signals to other devices;

The processor 540 is configured to execute program code in the memory 510.

Optionally, the processor 540 may implement various operations of the method 200 when the code is executed, and details are not described herein for brevity. The receiver 520 is configured to perform specific signal reception under the driving of the processor 540, and the transmitter 530 is configured to perform specific signal transmission under the driving of the processor 540.

The communication device 500 may be the network device or the wireless device described above, and perform the operations of the determining module, and the transmitter and/or the receiver respectively perform the corresponding steps of the sending module and the receiving module.

It should be understood that the terms "and/or" and "at least one of A or B" herein are merely an association describing the associated object, indicating that there may be three relationships, for example, A and/or B, Representation: There are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, the character "/" in this article generally indicates that the contextual object is an "or" relationship.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with the present application are generated in whole or in part. The computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center via wired (eg, coaxial cable, fiber optic, digital subscriber line) or wireless (eg, infrared, wireless, microwave, etc.). The computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape, an optical medium, or a semiconductor medium such as a Solid State Disk (SSD).

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A communication method, comprising:

Determining a first index, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block, and send the first index to the wireless device;

The first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.
The method of claim 1 wherein

The first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

The first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of transmission block repetitions are included in a group of information in the third table. .
Method according to claim 1 or 2, characterized in that

The first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition number of a transport block, and the repetition of the transport block included in each set of information The number of times is one;

The number of repetitions of the transport block included in the at least two sets of information is different;

When the second modulation coding mode order in the first table is smaller than the third modulation coding mode order in the first table, the number of repetitions of the transmission block corresponding to the second modulation coding mode order is greater than or And the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.
Method according to claim 1 or 2, characterized in that

The second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation and coding mode information;

The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is One;

The at least two sets of information include different transmission block repetition times;

When the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second modulation coding mode order corresponds to the third table The number of repetitions of the transport block is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.
The method of claim 2, wherein the first table belongs to a first set of information;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one;

The maximum number of repetitions of the transport block included in the at least two sets of information is different;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order is smaller than the second modulation coding mode information included in the second information coding mode information in the first information set, The maximum number of repetitions of the transport block corresponding to the first modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information,

The first table includes at least one index, and modulation and coding mode information corresponding to the at least one index and a repetition number of the transport block.
The method according to claim 5, wherein the number of repetitions of the transport block corresponding to the second modulation and coding scheme information is a subset of the number of repetitions of the transport block corresponding to the first modulation and coding scheme information.
The method according to claim 5 or 6, wherein when the first modulation and coding mode information includes a modulation order smaller than a modulation order included in the second modulation and coding mode information, the first modulation The maximum number of repetitions of the transport block corresponding to the coding mode information is greater than the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information.
The method according to any one of claims 5 to 7, wherein the order of the first modulation and coding mode is smaller than the order of the second modulation and coding mode comprises:

The first modulation order is less than the second modulation order; or

The first modulation order is the same as the second modulation order, and the first code rate is less than the second code rate; or

The index corresponding to the order of the first modulation and coding mode is smaller than the index corresponding to the order of the second modulation and coding mode;

The first modulation and coding mode information includes the first modulation order and the first code rate, and the second modulation and coding mode information includes the second modulation order and the second code rate.
A communication method, comprising:

Receiving a first index sent by the network device, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block;

Demodulating the transport block according to the first modulation and coding mode information indicated by the first index;

The first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.
The method of claim 9 wherein:

The first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

The first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of transmission block repetitions are included in a group of information in the third table. .
Method according to claim 9 or 10, characterized in that

The first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition number of a transport block, and the repetition of the transport block included in each set of information The number of times is one;

The number of repetitions of the transport block included in the at least two sets of information is different;

When the second modulation coding mode order in the first table is smaller than the third modulation coding mode order in the first table, the number of repetitions of the transmission block corresponding to the second modulation coding mode order is greater than or And the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.
Method according to claim 9 or 10, characterized in that

The second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation and coding mode information;

The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is One;

The at least two sets of information include different transmission block repetition times;

When the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second modulation coding mode order corresponds to the third table The number of repetitions of the transport block is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.
The method of claim 10 wherein:

The first table belongs to a first information set;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one;

The maximum number of repetitions of the transport block included in the at least two sets of information is different;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order is smaller than the second modulation coding mode information included in the second information coding mode information in the first information set, The maximum number of repetitions of the transport block corresponding to the first modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information;

The first table includes at least one index, and modulation and coding mode information corresponding to the at least one index and a repetition number of the transmission block.
The method according to claim 13, wherein the second modulation coding mode information comprises a repetition number of transmission blocks which is a subset of the number of repetitions of the transmission block included in the first modulation coding mode information.
The method according to claim 13 or 14, wherein when the first modulation and coding mode information includes a modulation order smaller than a modulation order included in the second modulation and coding mode information, the first modulation The coding mode information includes a maximum number of repetitions of the transport block that is greater than a maximum number of repetitions of the transport block included in the second modulation and coding scheme information.
The method according to any one of claims 13 to 15, wherein the first modulation coding mode order is smaller than the second modulation coding mode order includes:

The first modulation order is less than the second modulation order; or

The first modulation order is the same as the second modulation order, and the first code rate is less than the second code rate; or

The index corresponding to the order of the first modulation and coding mode is smaller than the index corresponding to the order of the second modulation and coding mode;

The first modulation and coding mode information includes the first modulation order and the first code rate, and the second modulation and coding mode information includes the second modulation order and the second code rate.
A network device, comprising:

a determining module, configured to determine a first index, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block;

a sending module, configured to send the first index to a wireless device;

The first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.
The network device according to claim 17, wherein

The first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

The first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of transmission block repetitions are included in a group of information in the third table. .
A network device according to claim 17 or 18, characterized in that

The first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition number of a transport block, and the repetition of the transport block included in each set of information The number of times is one;

The number of repetitions of the transport block included in the at least two sets of information is different;

When the second modulation coding mode order in the first table is smaller than the third modulation coding mode order in the first table, the number of repetitions of the transmission block corresponding to the second modulation coding mode order is greater than or And the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.
A network device according to claim 17 or 18, characterized in that

The second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation and coding mode information;

The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is One;

The at least two sets of information include different transmission block repetition times;

When the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second modulation coding mode order corresponds to the third table The number of repetitions of the transport block is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.
A network device according to claim 18, wherein

The first table belongs to a first information set;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one;

The maximum number of repetitions of the transport block included in the at least two sets of information is different;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order is smaller than the second modulation coding mode information included in the second information coding mode information in the first information set, The maximum number of repetitions of the transport block corresponding to the first modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information,

The first table includes at least one index, and modulation and coding mode information corresponding to the at least one index and a repetition number of the transmission block.
The network device according to claim 21, wherein the number of repetitions of the transport block corresponding to the second modulation and coding scheme information is a subset of the number of repetitions of the transport block corresponding to the first modulation and coding scheme information.
The network device according to claim 21 or 22, wherein when the first modulation and coding mode information includes a modulation order smaller than a modulation order included in the second modulation and coding mode information, the first The maximum number of repetitions of the transport block corresponding to the modulation and coding scheme information is greater than the maximum number of repetitions of the transport block corresponding to the second modulation and coding scheme information.
The network device according to any one of claims 21 to 23, wherein the first modulation coding mode order is smaller than the second modulation coding mode order:

The first modulation order is less than the second modulation order; or

The first modulation order is the same as the second modulation order, and the first code rate is less than the second code rate; or

The index corresponding to the order of the first modulation and coding mode is smaller than the index corresponding to the order of the second modulation and coding mode;

The first modulation and coding mode information includes the first modulation order and the first code rate, and the second modulation and coding mode information includes the second modulation order and the second code rate.
A wireless device, comprising:

a receiving module, configured to receive a first index sent by the network device, where the first index is used to indicate the first modulation and coding mode information and the number of repetitions of the transport block;

a processing module, configured to demodulate the transport block according to the first modulation and coding mode information indicated by the first index;

The first modulation and coding mode information and the number of repetitions of the transport block correspond to a first reliability requirement.
The wireless device of claim 25, wherein

The first index, the first modulation and coding mode information, and the number of repetitions of the transport block are included in a group of information in the first table; or

The first index and the first modulation and coding mode information are included in a group of information in the second table, and the first index and the number of transmission block repetitions are included in a group of information in the third table. .
A wireless device according to claim 25 or claim 26, wherein

The first table includes at least two sets of information, each of the at least two sets of information including an index, modulation and coding mode information, and a repetition number of a transport block, and the repetition of the transport block included in each set of information The number of times is one;

The number of repetitions of the transport block included in the at least two sets of information is different;

When the second modulation coding mode order in the first table is smaller than the third modulation coding mode order in the first table, the number of repetitions of the transmission block corresponding to the second modulation coding mode order is greater than or And the number of repetitions of the transport block corresponding to the order of the third modulation and coding mode.
A wireless device according to claim 25 or claim 26, wherein

The second table includes at least two sets of information, each of the at least two sets of information including an index, and modulation and coding mode information;

The third table includes at least two sets of information, each of the at least two sets of information includes an index, and a repetition number of the transport block, and the number of repetitions of the transport block included in each set of information is One;

The at least two sets of information include different transmission block repetition times;

When the second modulation coding mode order in the second table is smaller than the third modulation coding mode order in the second table, the second modulation coding mode order corresponds to the third table The number of repetitions of the transport block is greater than or equal to the number of repetitions of the transport block in the third table corresponding to the order of the third modulation coding mode.
The wireless device of claim 26, wherein

The first table belongs to a first information set;

The first information set includes at least two sets of information, each of the at least two sets of information includes modulation and coding mode information and a repetition number of the transport block, and the number of repetitions of the transport block in each set of information The quantity is at least one;

The maximum number of repetitions of the transport block included in the at least two sets of information is different;

When the first modulation coding mode information in the first information set includes a first modulation coding mode order is smaller than the second modulation coding mode information included in the second information coding mode information in the first information set, The maximum number of repetitions of the transport block corresponding to the first modulation and coding mode information is greater than or equal to the maximum number of repetitions of the transport block corresponding to the second modulation and coding mode information,

The first table includes at least one index, and modulation and coding mode information corresponding to the at least one index and a repetition number of the transmission block.
The wireless device according to claim 29, wherein the number of repetitions of the transport block included in the second modulation and coding scheme information is a subset of the number of repetitions of the transport block included in the first modulation and coding scheme information.
The wireless device according to claim 28 or 29, wherein when the first modulation and coding mode information includes a modulation order smaller than a modulation order included in the second modulation and coding mode information, the first The modulation coding mode information includes a maximum number of repetitions of the transport block that is greater than a maximum number of repetitions of the transport block included in the second modulation and coding scheme information.
The wireless device according to any one of claims 28 to 31, wherein the first modulation coding mode order is smaller than the second modulation coding mode order:

The first modulation order is less than the second modulation order; or

The first modulation order is the same as the second modulation order, and the first code rate is less than the second code rate; or

The index corresponding to the order of the first modulation and coding mode is smaller than the index corresponding to the order of the second modulation and coding mode;

The first modulation and coding mode information includes the first modulation order and the first code rate, and the second modulation and coding mode information includes the second modulation order and the second code rate.
A computer storage medium, characterized in that the computer storage medium stores program instructions that, when executed, cause a network device to perform the method of any one of claims 1-8.
A computer storage medium, characterized in that the computer storage medium stores program instructions that, when executed, cause a wireless device to perform the method of any one of claims 9 to 16.
A computer program product, characterized in that the computer program product comprises instructions which, when executed, cause a network device to perform the method of any one of claims 1 to 8.
A computer program product, characterized in that the computer program product comprises instructions which, when executed, cause a wireless device to perform the method of any one of claims 9 to 16.