CN117478264A

CN117478264A - Channel transmission method, device, network equipment and terminal

Info

Publication number: CN117478264A
Application number: CN202210843992.9A
Authority: CN
Inventors: 丁勇; 云翔
Original assignee: Baicells Technologies Co Ltd
Current assignee: Baicells Technologies Co Ltd
Priority date: 2022-07-18
Filing date: 2022-07-18
Publication date: 2024-01-30

Abstract

The invention provides a channel transmission method, a device, network equipment and a terminal, and relates to the technical field of communication. The method comprises the following steps: determining a target code rate of a target channel according to the channel quality of the target channel; according to the target code rate, determining first retransmission configuration information of the target channel, wherein the first retransmission configuration information comprises: a first set of code block numbers and a set of code block indices; and according to the first retransmission configuration information, carrying out repeated transmission with the terminal for K times, wherein K represents the total number of repeated transmission and K is a positive integer. The scheme of the invention solves the problem of lower transmission efficiency caused by mismatching of the code rate of repeated transmission and the target code rate in the prior art.

Description

Channel transmission method, device, network equipment and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a channel transmission method, a device, a network device, and a terminal.

Background

In the existing NR (New Radio) protocol standard, in order to ensure the reliability of channel transmission data, there is a technology for allowing multiple repeated transmissions on an uplink shared channel or a downlink shared channel. In some cases, due to various reasons such as channel resource cross-slot, CORESET (control resource set ) occupation, some repeated transmission resources of these channel transmissions are occupied, so that the channel resources of each repeated transmission are different, the code rate of these repeated transmissions cannot be matched with the target code rate, and the transmission efficiency is reduced due to the mismatch of the code rates.

For example, for the uplink shared channel repetition Type B (repetition type B), actual repetition (actual repetition) may change to some extent the number of resource symbols and repetition times compared to the nominal repetition (nominal repetition) transmission channel. The target code rate is selected according to the channel quality, and then the size of the transmission bit is calculated according to the target code rate and nominal repetition transmission channel resources, wherein actual repetition transmission channel resources are smaller than or equal to nominal repetition transmission channel resources, so that the size of the transmission bit to be transmitted is unchanged, the transmission resources are reduced, the code rate on a actual repetition channel cannot be matched with the target code rate, and the transmission efficiency is reduced.

Disclosure of Invention

The invention provides a channel transmission method, a device, network equipment and a terminal, which solve the problem of lower transmission efficiency caused by mismatching of repeated transmission code rate and target code rate in the prior art.

In a first aspect, an embodiment of the present invention provides a channel transmission method, applied to a network device, including:

determining a target code rate of a target channel according to the channel quality of the target channel;

according to the target code rate, determining first retransmission configuration information of the target channel, wherein the first retransmission configuration information comprises: a first set of code block numbers and a set of code block indices;

And according to the first retransmission configuration information, carrying out repeated transmission with the terminal for K times, wherein K represents the total number of repeated transmission and K is a positive integer.

Optionally, determining the first set of code block numbers of the target channel includes:

determining the maximum bit capacity of the target channel for repeated transmission according to the target code rate and the transmission block size of the target channel;

determining a third code Block number in the ith repeated transmission according to the first bit capacity, the maximum bit capacity and the second code Block number contained in the TB (Transport Block) in the ith repeated transmission;

and determining the first code block number set of the target channel according to the third code block number, wherein the first code block number set comprises first code block numbers corresponding to repeated transmission.

Optionally, the determining the third code block number in the ith repeated transmission according to the first bit capacity in the ith repeated transmission, the maximum bit capacity and the second code block number contained in the transmission block TB includes:

according to the formula:determining a third code block number in the ith repeated transmission;

wherein m is _i Representing the third code block number in the ith repeated transmission, G _i Representing the first bit capacity in the ith retransmission, G _max Representing the maximum bit capacity of the repeated transmission, M representing the second number of code blocks.

Optionally, the determining the first code block number set of the target channel according to the third code block number includes:

determining the total number of code blocks in K times of repeated transmission according to the third code block number;

determining the first code block number set according to the code block total number;

wherein the determining the first code block number set according to the code block total number includes:

determining the third code block number as the first code block number in the case that the total number of code blocks is greater than or equal to the second code block number;

determining the first code block number set through a first operation under the condition that the total number of code blocks is smaller than the second code block number, wherein the first code block number set meets a first preset condition, and the first preset condition is that: the total number of code blocks is greater than or equal to the second number of code blocks;

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, determining the set of code block indexes of the target channel includes at least one of:

according to the formula:determining the set of code block indices for the target channel;

selecting first type repeated transmission meeting a second preset condition, and determining the code block index set of the target channel according to a selection result, wherein the code block index set comprises the code block index of each code block in repeated transmission;

wherein x represents the index of the jth code block in the ith retransmission in TB, n _k Representing the number of code blocks contained in the kth repeated transmission, M representing the number of second code blocks contained in the TB, i and j being integers greater than or equal to 0, and i being less than K;

the second preset condition is: the third number of code blocks in the ith retransmission is equal to the second number of code blocks.

Optionally, the determining the code block index set of the target channel according to the selection result includes:

determining a code block index of a j-th code block in the first type of repeated transmission as j;

for the second type of repeated transmission that does not meet the second preset condition, according to the formula:determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; / >Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, after the determining the first retransmission configuration information of the target channel according to the target code rate, the method further includes:

according to the first retransmission configuration information, first downlink control information DCI is sent to the terminal;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, the performing K repeated transmissions with the terminal according to the first retransmission configuration information includes:

coding is carried out for each repeated transmission according to the first retransmission configuration information, and a target signal corresponding to each repeated transmission is obtained until the coding of K repeated transmissions is completed;

and respectively sending the target signals corresponding to the repeated transmissions to the terminal.

Optionally, the encoding for each repetition transmission according to the first retransmission configuration information to obtain a target signal corresponding to each repetition transmission includes:

Performing Cyclic Redundancy Check (CRC) scrambling on an information bit sequence of each code block in the ith repeated transmission to obtain code block information bits and CRC bit sequences corresponding to each code block;

obtaining m according to the code block information bit and the CRC bit sequence _i Code blocks encode bit sequences, m _i Representing the third code block number in the ith repeated transmission;

respectively to m _i Each of the code blocksPerforming rate matching on the coded bit sequence to obtain m _i A first codeword;

let m _i Merging the first code words to obtain target code words;

and modulating the target code word to obtain the target signal corresponding to the ith repeated transmission.

In a second aspect, an embodiment of the present invention provides a channel transmission method, applied to a terminal, including:

acquiring first retransmission configuration information of a target channel, wherein the first retransmission configuration information comprises: a first set of code block numbers and a set of code block indices;

and according to the first retransmission configuration information, carrying out repeated transmission with the network equipment for K times, wherein K represents the total number of repeated transmission, and K is a positive integer greater than or equal to 1.

Optionally, the acquiring the first retransmission configuration information of the target channel includes:

Receiving first DCI sent by the network equipment;

determining the first retransmission configuration information according to the first DCI;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

acquiring a target code rate of the target channel;

and determining first retransmission configuration information of the target channel according to the target code rate.

Optionally, acquiring the first set of code block numbers of the target channel includes:

determining the number of third code blocks in the ith repeated transmission according to the first bit capacity, the maximum bit capacity and the number of second code blocks contained in the TB in the ith repeated transmission, wherein i is an integer which is more than or equal to 0 and less than K;

Optionally, the determining the third code block number in the ith repeated transmission according to the first bit capacity in the ith repeated transmission, the maximum bit capacity and the second code block number contained in the TB includes:

Wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, acquiring the set of code block indexes of the target channel includes at least one of:

for the second type of repeated transmission that does not meet the second preset condition, according to the formula: Determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, the performing K repeated transmissions with the network device according to the first retransmission configuration information includes:

receiving target signals corresponding to repeated transmission sent by the network equipment respectively;

demodulating the target signal corresponding to each repeated transmission according to the first retransmission configuration information of the target channel to respectively obtain codeword soft bits corresponding to each repeated transmission;

and according to the first retransmission configuration information, carrying out rate recovery on the codeword soft bits corresponding to each repeated transmission, and respectively obtaining code block level soft bit sequences corresponding to each repeated transmission:

and decoding the code block level soft bit sequence corresponding to each repeated transmission according to the first retransmission configuration information until the TB is successfully decoded, so as to obtain target information.

Optionally, the performing rate recovery on the codeword soft bits corresponding to each repeated transmission according to the first retransmission configuration information, to obtain a code block level soft bit sequence corresponding to each repeated transmission, respectively, includes:

Obtaining the number of code blocks in the ith repeated transmission according to the first retransmission configuration information;

and carrying out rate recovery on the codeword soft bits corresponding to the ith repeated transmission according to the number of the code blocks and the redundancy version number to obtain a code block level soft bit sequence corresponding to the ith repeated transmission.

Optionally, the decoding the code block level soft bit sequence corresponding to each repeated transmission according to the first retransmission configuration information includes:

acquiring a code block index set in repeated transmission according to the first retransmission configuration information;

according to the code block index set, performing a first operation and combination on the code block level soft bit sequence corresponding to the ith repeated transmission and the code block level soft bit sequence cached in a first index position to obtain a first code block level soft bit sequence and store the first code block level soft bit sequence, wherein the first index position is: and the code word buffer is used for storing the storage position corresponding to the code block index of each code block in the ith repeated transmission.

In a third aspect, an embodiment of the present invention provides a channel transmission apparatus, applied to a network device, including:

the first processing module is used for determining a target code rate of a target channel according to the channel quality of the target channel;

The second processing module is configured to determine, according to the target code rate, first retransmission configuration information of the target channel, where the first retransmission configuration information includes: a first set of code block numbers and a set of code block indices;

and the third processing module is used for carrying out repeated transmission with the terminal for K times according to the first retransmission configuration information, wherein K represents the total number of repeated transmission and K is a positive integer.

Optionally, the second processing module includes:

a first processing sub-module, configured to determine a maximum bit capacity of the target channel for repeated transmission according to the target code rate and a transport block size of the target channel;

a second processing sub-module, configured to determine, according to a first bit capacity in the ith repeated transmission, the maximum bit capacity, and a second code block number included in the transport block TB, a third code block number in the ith repeated transmission, where i is an integer greater than or equal to 0 and less than K;

and the third processing submodule is used for determining the first code block number set of the target channel according to the third code block number, wherein the first code block number set comprises first code block numbers corresponding to repeated transmission respectively.

Optionally, the second processing sub-module includes:

A first processing unit, configured to, according to the formula:determining a third code block number in the ith repeated transmission;

Optionally, the third processing sub-module includes:

a second processing unit, configured to determine, according to the third number of code blocks, a total number of code blocks in K repeated transmissions;

a third processing unit, configured to determine the first code block number set according to the total number of code blocks;

wherein the third processing unit includes:

a first determining subunit configured to determine the third code block number as the first code block number in a case where the total number of code blocks is greater than or equal to the second code block number;

a second determining subunit, configured to determine, through a first operation, the first code block number set when the total number of code blocks is smaller than the second code block number, where the first code block number set meets a first preset condition, where the first preset condition is: the total number of code blocks is greater than or equal to the second number of code blocks;

Wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the second processing module 802 includes:

a fourth processing sub-module configured to determine a code block index of a j-th code block in the first type of repeated transmission as j;

a fifth processing sub-module, configured to, for a second type of repeated transmission that does not meet the second preset condition, according to the formula: Determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, the apparatus further comprises:

a first sending module, configured to send first downlink control information DCI to the terminal according to the first retransmission configuration information;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, the third processing module includes:

a sixth processing sub-module, configured to encode for each repetition transmission according to the first retransmission configuration information, to obtain a target signal corresponding to each repetition transmission, until the encoding is completed for K repetition transmissions;

and the first sending submodule is used for respectively sending the target signals corresponding to the repeated transmission to the terminal.

Optionally, the sixth processing submodule includes:

A fourth processing unit, configured to perform Cyclic Redundancy Check (CRC) scrambling on an information bit sequence of each code block in the ith repeated transmission, to obtain a code block information bit and a CRC bit sequence corresponding to each code block;

a fifth processing unit for obtaining m according to the code block information bits and the CRC bit sequence _i Code blocks encode bit sequences, m _i Representing the third code block number in the ith repeated transmission;

sixth processing unit for respectively for m _i Rate matching is carried out on the code block coding bit sequences to obtain m _i A first codeword;

seventh processing unit for dividing m _i Merging the first code words to obtain target code words;

and an eighth processing unit, configured to modulate the target codeword to obtain the target signal corresponding to the ith repeated transmission.

In a fourth aspect, an embodiment of the present invention provides a channel transmission apparatus, applied to a terminal, including:

a first obtaining module, configured to obtain first retransmission configuration information of a target channel, where the first retransmission configuration information includes: a first set of code block numbers and a set of code block indices;

and the fourth processing module is used for carrying out repeated transmission with the network equipment for K times according to the first retransmission configuration information, wherein K represents the total number of repeated transmission, and K is a positive integer greater than or equal to 1.

Optionally, the first acquisition module includes:

a first receiving sub-module, configured to receive a first DCI sent by the network device;

a seventh processing sub-module, configured to determine, according to the first DCI, the first retransmission configuration information;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, the first acquisition module includes:

the first acquisition sub-module is used for acquiring the target code rate of the target channel;

and the eighth processing submodule is used for determining the first retransmission configuration information of the target channel according to the target code rate.

Optionally, the eighth processing sub-module includes:

a ninth processing unit, configured to determine, according to the target code rate and a transport block size of the target channel, a maximum bit capacity of repeated transmission performed by the target channel;

a tenth processing unit, configured to determine, according to a first bit capacity in the ith repeated transmission, the maximum bit capacity, and a second code block number included in the TB, a third code block number in the ith repeated transmission, where i is an integer greater than or equal to 0 and less than K;

An eleventh processing unit, configured to determine, according to the third code block number, the first code block number set of the target channel, where the first code block number set includes first code block numbers corresponding to each repetition transmission.

Optionally, the tenth processing unit includes:

a first processing subunit configured to, according to the formula:determining a third code block number in the ith repeated transmission;

Optionally, the eleventh processing unit includes:

a second processing subunit, configured to determine, according to the third number of code blocks, a total number of code blocks in K repeated transmissions;

a third processing subunit, configured to determine the first set of code block numbers according to the total number of code blocks;

wherein the third processing subunit comprises:

a third determining subunit configured to determine, when the total number of code blocks is greater than or equal to the second number of code blocks, the third number of code blocks as the first number of code blocks;

A fourth determining subunit, configured to determine, through a first operation, the first code block number set when the total number of code blocks is smaller than the second code block number, where the first code block number set meets a first preset condition, where the first preset condition is: the total number of code blocks is greater than or equal to the second number of code blocks;

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the eighth processing sub-module includes:

a twelfth processing unit, configured to:determining the set of code block indices for the target channel;

a thirteenth processing unit, configured to select a first type of repeated transmission that meets a second preset condition, and determine, according to a selection result, the code block index set of the target channel, where the code block index set includes a code block index of each code block in each repeated transmission;

Optionally, the thirteenth processing unit includes:

a fourth processing subunit configured to determine a code block index of a j-th code block in the first type retransmission as j;

a fifth processing subunit, configured to, for a second type of repeated transmission that does not meet the second preset condition, according to the formula:determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, the fourth processing module includes:

the second receiving sub-module is used for respectively receiving target signals corresponding to repeated transmission sent by the network equipment;

a ninth processing sub-module, configured to demodulate, according to the first retransmission configuration information of the target channel, the target signal corresponding to each repetition transmission, so as to obtain codeword soft bits corresponding to each repetition transmission respectively;

a tenth processing sub-module, configured to perform rate recovery on the codeword soft bits corresponding to each repetition transmission according to the first retransmission configuration information, to obtain a code block level soft bit sequence corresponding to each repetition transmission respectively:

And an eleventh processing sub-module, configured to decode the code block level soft bit sequence corresponding to each repeated transmission according to the first retransmission configuration information until the TB is successfully decoded, so as to obtain target information.

Optionally, the tenth processing submodule includes:

a sixth processing subunit, configured to obtain, according to the first retransmission configuration information, a number of code blocks in the ith repeated transmission;

and the seventh processing subunit is used for carrying out rate recovery on the codeword soft bits corresponding to the ith repeated transmission according to the number of the code blocks and the redundancy version number to obtain a code block level soft bit sequence corresponding to the ith repeated transmission.

Optionally, the eleventh processing sub-module includes:

a first obtaining subunit, configured to obtain a code block index set in repeated transmission according to the first retransmission configuration information;

and an eighth processing subunit, configured to perform a first operation and combine, according to the code block index set, the code block level soft bit sequence corresponding to the ith repeated transmission and the code block level soft bit sequence cached in the first index position, to obtain a first code block level soft bit sequence, and store the first code block level soft bit sequence, where the first index position is: and the code word buffer is used for storing the storage position corresponding to the code block index of each code block in the ith repeated transmission.

In a fifth aspect, an embodiment of the present invention provides a network device, including: a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the channel transmission method according to the first aspect when the computer program is executed.

In a sixth aspect, an embodiment of the present invention provides a terminal, including: a transceiver, a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the channel transmission method according to the first aspect when the computer program is executed.

In a seventh aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the channel transmission method as described in the first aspect, or implements the steps of the channel transmission method as described in the second aspect.

The technical scheme of the invention has the beneficial effects that:

according to the embodiment of the invention, the network equipment can determine the first retransmission configuration information of the target channel according to the target code rate of the target channel, namely, the first code block number set and the code block index set in the configuration repeat transmission, and then can carry out repeat transmission with the terminal according to the first retransmission configuration information, so that the actual transmission code rate is closer to the expected target code rate by reasonably configuring the number of information bits of each repeat transmission, and the overall transmission performance is improved.

Drawings

Fig. 1 shows a flow chart of a channel transmission method according to an embodiment of the present invention;

FIG. 2 is a diagram showing the relationship between the signal to noise ratio and the bit error rate corresponding to different bit rates according to an embodiment of the present invention;

FIG. 3 is a diagram of one of the code block index sets of the target channel according to an embodiment of the present invention;

FIG. 4 is a diagram illustrating a second set of code block indexes of a target channel according to an embodiment of the present invention;

fig. 5 shows a schematic diagram of channel coding of a network device according to an embodiment of the present invention;

fig. 6 shows a schematic diagram of decoding a code block of a terminal according to an embodiment of the present invention;

fig. 7 is a flowchart of a channel transmission method according to another embodiment of the present invention;

fig. 8 is a block diagram showing the structure of a channel transmission apparatus according to an embodiment of the present invention;

fig. 9 is a block diagram showing the structure of a channel transmission apparatus according to another embodiment of the present invention;

fig. 10 is a block diagram showing the structure of a network device according to an embodiment of the present invention;

fig. 11 is a block diagram showing the structure of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to facilitate a thorough understanding of embodiments of the invention. It will therefore be apparent to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In various embodiments of the present invention, it should be understood that the sequence numbers of the following processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

In addition, the terms "system" and "network" are often used interchangeably herein.

In the examples provided herein, it should be understood that "B corresponding to a" means that B is associated with a from which B may be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In the embodiment of the invention, the form of the access network is not limited, and the access network may be an access network including a macro base station (Macro Base Station), a micro base station (Pico Base Station), a Node B (3G mobile base station name), an enhanced base station (eNB), a Home enhanced base station (Femto eNB or Home eNode B or Home eNB or HeNB), a relay station, an access point, an RRU (Remote Radio Unit, a remote radio module), an RRH (Remote Radio Head, a remote radio head), and the like. The user terminal may be a mobile phone (or handset), or other device capable of transmitting or receiving wireless signals, including user equipment, personal Digital Assistant (PDA), wireless modem, wireless communicator, handheld device, laptop, cordless phone, wireless Local Loop (WLL) station, CPE (Customer Premise Equipment, client terminal) or mobile smart hot spot capable of converting mobile signals to WiFi signals, smart home appliances, or other devices capable of spontaneously communicating with a mobile communication network without manipulation by a person, etc.

Specifically, the embodiment of the invention provides a channel transmission method, a device, network equipment and a terminal, which solve the problem of lower transmission efficiency caused by mismatching of the code rate of repeated transmission and a target code rate in the prior art.

First embodiment

As shown in fig. 1, an embodiment of the present invention provides a channel transmission method, which is applied to a network device, and specifically includes the following steps:

step 11: and determining a target code rate of the target channel according to the channel quality of the target channel.

Here, the target channel is a physical channel, for example, PUSCH (Physical Uplink Shared Channel ) or PDSCH (Physical Downlink Shared CHannel, physical downlink shared channel). The primary physical channel transmission may be an uplink PUSCH channel transmission or a downlink PDSCH channel transmission.

Here, the target code rate is determined by the network device (e.g., a base station) according to the channel quality, and the target code rate is determined so as to achieve optimal transmission efficiency on the premise of meeting a certain transmission reliability requirement of transmission.

As shown in fig. 2, when the SNR (SIGNAL-NOISE RATIO) is x dB, the transmission mode with the intermediate code Rate can make the overall code word Error Rate (BLER) reach the lower bound plateau, and at this time, if the transmission mode with the high code Rate is adopted, the overall code word Error Rate will be high, and if the transmission mode with the low code Rate is adopted, the performance of the Error Rate with the low code Rate will not be improved greatly because of the plateau. Therefore, the intermediate code rate can optimize the balance of the error rate performance and the transmission throughput according to the current channel condition.

Step 12: according to the target code rate, determining first retransmission configuration information of the target channel, wherein the first retransmission configuration information comprises: a first set of code block numbers and a set of code block indices.

Here, the first set of code block numbers is: and respectively corresponding code block number sets for each repeated transmission, wherein the code block index sets are as follows: a set of code block indices for each code block in each repetition transmission.

Step 13: and according to the first retransmission configuration information, carrying out repeated transmission with the terminal for K times, wherein K represents the total number of repeated transmission and K is a positive integer.

In this way, according to the first retransmission configuration information reasonably configured for repeated transmission in the previous step, repeated transmission is performed with the terminal, so that the actual transmission code rate can be ensured to be closer to the expected target code rate.

In this embodiment, the network device may determine the first retransmission configuration information of the target channel according to the target code rate of the target channel, that is, configure the first code block number set and the code block index set in the repeated transmission, and then may perform repeated transmission with the terminal according to the first retransmission configuration information, so that the actual transmission code rate is closer to the desired target code rate by reasonably configuring the number of information bits of each repeated transmission, thereby improving the overall transmission performance.

It should be noted that, the transmission of the target channel in the embodiment of the present invention has the following features: the actual code rate of any repeated transmission in the target channel transmission is similar to the target code rate, so that the optimal transmission efficiency is realized; any one of the target channel transmissions repeatedly carries all or part of a CB (Code Block) of one TB; after multiple repeated transmissions in the target channel transmission are combined, all CBs of the TB can be completely transmitted, and the integrity of the TB transmission is ensured. The specific analysis is as follows:

and (I) determining the maximum bit capacity of the target channel for repeated transmission according to the target code rate and the transmission block size of the target channel.

Here, the TBS (Transport Block Size ) of the target channel can be understood as the number of bits transmitted by the target channel (using repeated transmission). It should be noted that, in the retransmission in the prior art, each retransmission is a complete transmission block, but in the embodiment of the present invention, any one retransmission in the target channel transmission carries all or part of CBs of one TB, and after multiple retransmissions in the target channel transmission are combined, all CBs of the TB can be completely transmitted.

In the case of resource priority, G may be determined according to the scheduled resource _max Further, the network device may determine the TBs of the TB according to the target code rate and the maximum bit capacity of the repeated transmission, and may be represented by the following formula (or an approximate form thereof):

TBS＝R _target ·G _max

in the case of service priority, the TBS may be determined according to the service requirement on the TBS, and further, the network device may determine, according to the target code rate and the TBS of the TB, the maximum bit capacity of the repeated transmission, as follows or an approximate form thereof:

wherein G is _max Represents maximum bit capacity, R _target Indicating the target code rate, TBS indicates the transport block size.

And (II) determining the number of third code blocks in the ith repeated transmission according to the first bit capacity, the maximum bit capacity and the number of second code blocks contained in the transmission block TB in the ith repeated transmission, wherein i is an integer which is more than or equal to 0 and less than K.

Here, the second number of code blocks included in the TB means: the number of code blocks contained in the complete TB.

And thirdly, determining the first code block number set of the target channel according to the third code block number, wherein the first code block number set comprises first code block numbers corresponding to repeated transmission respectively.

For example, the first set of code block numbers is { n } ₀ ，n ₁ ，…，n _k-1 N is }, where n ₀ For the first code block number corresponding to the 0 th repeated transmission, n _k-1 The corresponding first number of code blocks is transmitted for the k-1 st repetition.

In this embodiment, assuming that the physical channel transmission includes K repeated transmissions, for any i-th repeated transmission (i=0, 1, 2..k-1), the number of code blocks it carries (i.e., the third number of code blocks) may be determined according to a first formula:

combination formulaAnalysis shows that the first formula may be equivalent to the following second formula:

wherein G is _i The bit capacity which can be borne for the ith repeated transmission, namely the length of the output codeword of the transmission channel corresponding to the ith repeated transmission; m is the number of code blocks contained in the TB (i.e., the second number of code blocks).

It should be noted that, by using the number of the third code blocks carried by the TB in the ith repeated transmission of the formula two, the actual code rate of each repeated transmission can be similar to the target code rate, and the specific analysis is as follows:

according to a first formula:the following approximate relationship can be obtained:

the available Code Block (CB) size is approximately based on the Transport Block Size (TBS) and the number of code blocks (M) contained by the Transport Block (TB):

for any ith repeat transmissionBy virtue of its carrying m _i CB, and thus carry about the number of bits:and then according to the number of bits and bit capacity (G _i ) The code rate (R _i ). Wherein the process can be expressed by the following formula:

combining the approximate relationships obtained above:analysis shows that: r is R _i ≈R _target I.e. the code rate (R _i ) Is similar to the target code rate (R _target )。

In this embodiment, in one target channel transmission, several repeated transmissions are included, wherein each repeated transmission can transmit several (or all) CBs in the entire TB, by adjusting the number of CBs, i.e. by transmitting the number of code blocks (m _i ) With its bit capacity (G _i ) The actual code rate of each repeated transmission can be made to be similar to the target code rate, so that the channel can transmit the complete TB through repeated transmission for a plurality of times.

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

In this embodiment, it can be determined according to m _i (where i=0, 1,2,..k-1), i.e., the sum of the number of CBs that all repeated transmissions (i.e., K repeated transmissions) can carry (i.e., the total number of code blocks) to target the number of code blocks. Specifically, if Σm _i < M, i.e. the total number of code blocks is less than the number of CBs comprised by a complete TB, then the Sigma M can be caused by a first operation (e.g. increasing the target code rate or decreasing the TBS) _i And (5) not less than M. Thus, after all the repeated transmissions in the physical channel transmission are combined, all the CBs of the TB can be completely transmitted, so that the integrity of the TB transmission is ensured.

In most cases, there is at least one retransmission, where the number of CBs that can be carried is equal to M, or the number of CBs that can be carried by the multiple retransmission is equal to Σm _i And (3) not performing the processing of increasing the target code rate or reducing the TBS.

After determining the number of CBs that can be carried per repeat transmission, the code block index of the CB may be specifically determined by:

mode one: according to the formula:determining the set of code block indices of the target channel, wherein x represents the ith repetition transmissionIndex of j code blocks in TB, n _k Representing the number of code blocks included in the kth retransmission, M representing the number of second code blocks included in the TB, i and j are integers greater than or equal to 0, and i is less than K.

That is, CBs may be sequentially arranged to determine a code block index. Specifically, as shown in fig. 3, the index x (global index) of the jth (local index) CB of the ith repeated transmission bearer in the entire TB, x satisfies the following formula:

mode two: selecting a first type of repeated transmission meeting a second preset condition, and determining the code block index set of the target channel according to a selection result, wherein the code block index set comprises a code block index of each code block in repeated transmission, and the second preset condition is that: the third number of code blocks in the ith retransmission is equal to the second number of code blocks.

As an optional embodiment of the present invention, the determining the code block index set of the target channel according to a selection result includes:

and determining the code block index of the j-th code block in the first type repeat transmission as j.

For the second type of repeated transmission that does not meet the second preset condition, according to the formula:determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

That is, some repeated transmissions may be selected, CBs therein may be arranged independently, and then CBs therein may be arranged sequentially for the remaining repeated transmissions. Specifically, as shown in fig. 4, first, according to a second preset condition, repeated transmission capable of carrying M CBs (i.e., second type repeated transmission) is selected, so that the CB index thereof is increased from 0 to M-1, that is, the index of the jth code block (i.e., code block index) is determined as j; then, for other remaining repeated transmissions, CBs are sequentially arranged according to a first mode to determine a CB index.

For example, as shown in fig. 4, as an example, the first number of code blocks in the (i+1) th retransmission (with n _i+1 Representation) is equal to M, the index of the 0 th code block in the repeated transmission is 0, the index of the j th code block is j, and the index of the M-1 st code block is M-1.

wherein the first DCI includes at least one of:

first indication information;

Code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

In this embodiment, the network device may autonomously determine the CB number (i.e. the target code block number) and the CB index (i.e. the code block index) in each repeated transmission, and may also notify the terminal of these values (i.e. the target code block number and the code block index) by means of signaling.

Specifically, when the network device notifies the terminal through the signaling indication manner, the following form may be adopted:

mode one: in each repeated transmission, the index of the CB is arranged in a cyclic incremental manner. Here, the cyclic increment means that the index of the next CB is the index of the previous CB plus one and the remainder is taken for M.

In this manner, the network device may indicate at least two of the start CB index, the end CB index, or the number of CBs to the terminal through signaling, so that the terminal may determine the CB index carried in this repeated transmission according to the signaling. Here, the signaling may specifically be a dynamic scheduling DCI (Downlink Control Information ) of a physical channel. That is, the signaling (i.e., the first DCI) includes at least two of the following (e.g., including any two of the following three fields):

(1) Start code block index information, namely a start CB index field (startCBindex), such as: startCBindex 0, startCBindex 1, …, startCBindex I, …, startCBindex N-1. Wherein startCBindex i corresponds to the index of the first CB of the ith retransmission.

(2) Termination code block index information, namely, termination CB index field (endcbndex), such as: endcBindex 0, endcBindex 1, …, endcBindex I, …, endcBindex N-1. Wherein endcbindide corresponds to the index of the last CB of the ith retransmission.

(3) Code block number information, i.e., CB number field (CBnumber), such as: CBnumber 1, CBnumber 2, …, CBnumber i, …, CBnumber N. Wherein CBnumber i corresponds to the CB number of the ith retransmission.

In particular, the first DCI may also include a field indicating a start index and a number of sustained CBs of each repeated transmission in the form of RIV (Resource Indication Value ), that is, the first DCI transmitted by the network device may also include a resource indication value of a code block index, i.e., a CB RIV field (CBset), for example: CBset 1, CBset 2, …, CBset i, …, CBset N. Wherein CBset i corresponds to the start index of the CB of the ith retransmission and the number of sustained CBs.

Mode two: the indication is performed in a bitmap mode, specifically, in each repeated transmission, the network device indicates the CB index carried in the repeated transmission through the bitmap in the dynamic scheduling DCI of the physical channel. That is, the first DCI transmitted by the network device may contain code block bitmap information, i.e., a CB bitmap field (CBbitmap), for example: CBbitmap 1, CBbitmap 2, …, CBbitmap i, …, CBbitmap N. Wherein, CBbitmap i corresponds to the CB index of the ith repeated transmission.

The second mode may indicate a continuous CB set or a discontinuous CB set.

respectively to m _i Rate matching is carried out on the code block coding bit sequences to obtain m _i A first codeword;

let m _i Merging the first code words to obtain target code words;

Here, the process of determining the target signal may be understood as a channel coding process of the network device.

In this embodiment, in order to realize the number of code blocks (m _i ) With its bit capacity (G _i ) Matching, thereby realizing that the actual code rate of each repeated transmission is similar to the target codeThe coding process of the network device may specifically be as follows:

as shown in fig. 5, for any ith retransmission in physical channel transmission, it is assumed that its TB contains m _i The CB indexes (i.e. code block indexes) corresponding to each CB are respectively:firstly, the network equipment performs CRC (Cyclic redundancy check, cyclic redundancy check code) scrambling on the information bit sequence of each CB to obtain CB information bits and CRC bit sequences; then, the network device performs code block level coding, such as LDPC (Low Density Parity Check ), turbo, etc., according to the CB information bits and the CRC bit sequence, to obtain a CB encoded bit sequence; finally, for this m _i Respectively performing rate matching on the CB code bit sequences, and combining to obtain code words; the codeword is modulated to obtain the symbol (i.e., the target signal) carried by the channel.

In the embodiment of the invention, the network equipment can determine the first retransmission configuration information of the target channel according to the target code rate of the target channel, namely, the first code block number set and the code block index set in the configuration repeat transmission, and then can carry out repeat transmission with the terminal according to the first retransmission configuration information, so that the actual transmission code rate is closer to the expected target code rate by reasonably configuring the number of information bits of each repeat transmission, thereby improving the overall transmission performance; in addition, any repeated transmission of the target channel in the embodiment of the invention bears all or part of the CB of one TB, and after the repeated transmission of the target channel is combined, all the CBs of the TB can be completely transmitted, thereby ensuring the integrity of the TB transmission.

Second embodiment

As shown in fig. 7, an embodiment of the present invention provides a channel transmission method, which is applied to a terminal, and specifically includes the following steps:

step 71: acquiring first retransmission configuration information of a target channel, wherein the first retransmission configuration information comprises: a first set of code block numbers and a set of code block indices.

It should be noted that, the manner in which the terminal obtains the first retransmission configuration information may be that the network device notifies the terminal through a signaling indication manner, or may be that the terminal determines the first retransmission configuration information in a manner similar to that of the network device (i.e., a manner adopted when the network device determines the first retransmission configuration information).

Step 72: and according to the first retransmission configuration information, carrying out repeated transmission with the network equipment for K times, wherein K represents the total number of repeated transmission, and K is a positive integer greater than or equal to 1.

In this way, the terminal performs repeated transmission with the network according to the first retransmission configuration information reasonably configured for repeated transmission obtained in the previous step, so that the actual transmission code rate can be ensured to be closer to the expected target code rate.

In this embodiment, the terminal may learn, according to the first retransmission configuration information, the first code block number set and the code block index set of the repeated transmission of the target channel, so that by reasonably configuring the number of information bits of each repeated transmission, the actual transmission code rate is closer to the expected target code rate, thereby improving the overall transmission performance.

Specifically, the first retransmission configuration information may be obtained by:

the first mode specifically comprises the following steps:

receiving first DCI sent by the network equipment;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

In this manner, after the network device autonomously determines the CB number (i.e., the target code block number) and the CB index (i.e., the code block index) in each repeated transmission, the network device notifies the terminal of these values (i.e., the target code block number and the code block index) by means of signaling indication, and the detailed description of the specific case can be seen in the first embodiment, which is not repeated herein.

Mode two, specifically include the following steps:

acquiring a target code rate of the target channel;

That is, the terminal may determine the first retransmission configuration information (including the number of CBs and the CB index in each retransmission) using the same calculation rule as the network device, without necessarily requiring the network device to send signaling to the terminal to explicitly indicate the first retransmission configuration information.

It should be noted that, the target code rate may be indicated to the terminal by the network device, for example, the network device indicates the target code rate of the target channel to the terminal through DCI.

and (II) determining the third code block number in the ith repeated transmission according to the first bit capacity, the maximum bit capacity and the second code block number contained in the TB in the ith repeated transmission, wherein i is an integer greater than or equal to 0 and less than K.

according to the formula:determining a third code block number in the ith repeated transmission; wherein m is _i Representing the third code block number in the ith repeated transmission, G _i Representing the first bit capacity in the ith retransmission, G _max Representing the maximum bit capacity of the repeated transmission, M representing the second number of code blocks.

Optionally, the step may specifically include the steps of:

(1) Determining the total number of code blocks in K times of repeated transmission according to the third code block number;

(2) Determining the first code block number set according to the code block total number;

determining the first code block number set through a first operation under the condition that the total number of code blocks is smaller than the second code block number, wherein the first code block number set meets a first preset condition, and the first preset condition is that: the total number of code blocks is greater than or equal to the second number of code blocks; wherein the first operation includes at least one of: the target code rate is increased; the transport block size is reduced.

In this embodiment, the specific step of the terminal obtaining the first code block number set of the target channel is similar to the specific step of the network device determining the first code block number set of the target channel in the first embodiment, and reference may be made to the description related to the first embodiment.

mode one: according to the formula:determining the set of code block indices for the target channel; wherein x represents the index of the jth code block in the ith retransmission in TB, n _k Representing the number of code blocks included in the kth retransmission, M representing the number of second code blocks included in the TB, i and j are integers greater than or equal to 0, and i is less than K.

Mode two: selecting first type repeated transmission meeting a second preset condition, and determining the code block index set of the target channel according to a selection result, wherein the code block index set comprises the code block index of each code block in repeated transmission; the second preset condition is: the third number of code blocks in the ith retransmission is equal to the second number of code blocks.

In this embodiment, the specific step of the terminal obtaining the code block index set of the target channel is similar to the specific step of the network device determining the code block index set of the target channel in the first embodiment, and reference may be made to the description related to the first embodiment.

for the second type of repeated transmission that does not meet the second preset condition, according to the formula:determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is in all repeated transmissionsAnd a set of indexes of the second type of retransmission.

In this embodiment, some repeated transmissions (i.e., the second type of repeated transmissions) may be selected according to a second preset condition, CBs therein may be arranged independently (i.e., the CB index is incremented from 0 to M-1, i.e., the index of the jth code block is determined to be j), and then, for the remaining repeated transmissions, CBs therein may be arranged sequentially in the first mode.

and (I) respectively receiving target signals corresponding to repeated transmissions sent by the network equipment.

It should be noted that, for any ith repetition transmission in the physical channel transmission, after receiving the target signal, the terminal decodes the target signal, and the specific decoding process is as follows:

And secondly, demodulating the target signal corresponding to each repeated transmission according to the first retransmission configuration information of the target channel to respectively obtain codeword soft bits corresponding to each repeated transmission.

In this step, the terminal may demodulate the received symbol (i.e. the target signal) according to the channel configuration (the first retransmission configuration information) of the ith retransmission of the first retransmission configuration information, to obtain the codeword soft bits.

And thirdly, carrying out rate recovery on the codeword soft bits corresponding to each repeated transmission according to the first retransmission configuration information, and respectively obtaining code block level soft bit sequences corresponding to each repeated transmission.

In this step, the terminal may perform rate recovery on the codeword soft bits according to the obtained CB number (i.e. the target code block number in the first retransmission configuration information) carried on the repeated transmission and the redundancy version number, to obtain a code block level soft bit sequence.

And fourthly, decoding the code block level soft bit sequence corresponding to each repeated transmission according to the first retransmission configuration information until the TB decoding is successful, and obtaining target information.

In the step, the terminal can decode the code block level soft bit sequence according to the first retransmission configuration information to finally obtain the target information.

firstly, obtaining a code block index set in repeated transmission according to the first retransmission configuration information;

and (II) according to the code block index set, performing first operation and combination on the code block level soft bit sequence corresponding to the ith repeated transmission and the code block level soft bit sequence cached in a first index position to obtain a first code block level soft bit sequence and store the first code block level soft bit sequence, wherein the first index position is: and the code word buffer is used for storing the storage position corresponding to the code block index of each code block in the ith repeated transmission.

In this embodiment, the terminal may calculate and combine the code block level soft bit sequence with the code block level soft bit sequence cached in the corresponding CB index position in the codeword buffer according to the obtained CB index set (i.e., the set of code block indexes in the first retransmission configuration information) carried on the repeated transmission to obtain a first code block level soft bit sequence, then store the first code block level soft bit sequence in the corresponding CB index position in the buffer, and decode the first code block level soft bit sequence, thereby obtaining the target information.

The following specifically exemplifies a procedure of decoding the entire TB by the terminal (i.e., a channel decoding procedure on the terminal side) in the embodiment of the present application.

Step 1, a terminal can initialize an LDPC code bit buffer, and set the code bit in the buffer to be all 0; initializing an index i=0 of repeated transmission; marking all CB decoding results as "error"; assuming that the total number of repeated transmissions is K; a=0 is set.

Step 2, judging the value of i:

when i is less than K, the terminal receives the content of the ith repeated transmission, demodulates the content according to the first retransmission configuration information, and obtains codeword soft bits; when i is greater than or equal to K, the program is terminated.

And 3, the terminal carries out rate recovery on the code word soft bits according to the number of the repeated transmitted code blocks and the redundancy version number to obtain an LDPC code bit sequence at the code block level (namely, a code block level soft bit sequence).

And 4, the terminal calculates and combines the LDPC code bit sequence corresponding to the CB with the LDPC code bit sequence cached in the corresponding CB index position in the LDPC code bit cache, and then stores the LDPC code bit sequence into the corresponding CB index position in the cache.

If the CB decoding result corresponding to the CB index is marked as error, LDPC decoding is carried out on the combined LDPC coded soft bit sequence (namely the first code block level soft bit sequence), CRC of the code block level is checked, and whether each CB decoding is correct is judged according to whether the CRC check of the CB is 0. If the CRC of the CB is 0, the CB decoding result is marked as "correct"; if the CRC check of the CB is not 0, the CB decoding result is marked as an error.

Step 5, judging whether all CB decoding results are marked as correct, and dividing the judging result into the following cases:

in case one, all flags of CB decoding result are "correct".

In this case, the terminal combines all the information bits of the code block level to form a TB-CRC bit sequence, checks the CRC of the TB-CRC bit sequence, and then judges whether the decoding of the TB-CRC bit sequence is correct according to whether the CRC check of the TB is 0:

If decoding is correct, outputting information bit of TB level, and ending the procedure;

and (II) if decoding is wrong, marking all CB decoding results as 'wrong', and judging the value of A:

(1) If a=0, re-performing LDPC decoding on the combined LDPC coded soft bit sequences of all CBs, checking the CRC at the code block level, judging whether each CB is decoded correctly according to whether the CRC check of the CB is 0, marking the CB decoding result as "correct" or "error" according to the judging result, setting a=1, and executing step 5;

(2) If a=1, i=i+1, set a=0, and then execute step 2.

That is, when all CBs are decoded correctly, the terminal will combine all CBs into a TB-CRC bit sequence, and CRC the TB. If the solution CRC is correct, outputting information bits of a TB level; if the CRC error is resolved, the terminal continues to receive the content of the repeated transmission until the CRC decoding of the TB is correct or the repeated transmission is ended.

In particular, the terminal may also suspend decoding the code block level soft bit sequence of the corresponding CB after decoding of any code block level soft bit sequence is successful; when the TB is CRC-error decoded, the terminal re-decodes all code block level soft bit sequences.

In case two, there is a CB index flag of "error".

In this case, i=i+1, and then step 2 is performed.

It should be noted that, in the above first embodiment and the second embodiment, the encoding and decoding modes of each repeated transmission are applicable to CB encoding and decoding of a complete or incomplete TB, and all or part of CB of the TB may be transmitted each repeated transmission. In addition, in different repeated transmissions, the network device can use different redundancy versions and different code rates to encode, and correspondingly, the terminal can also combine and receive the code words using different redundancy versions and different code rates.

In the embodiment of the invention, the terminal can acquire the first code block number set and the code block index set of the repeated transmission of the target channel according to the first retransmission configuration information, so that the actual transmission code rate is closer to the expected target code rate by reasonably configuring the information bit number of repeated transmission each time, thereby improving the overall transmission performance.

Third embodiment

As shown in fig. 8, an embodiment of the present invention provides a channel transmission apparatus 800, which is applied to a network device, and includes:

a first processing module 801, configured to determine a target code rate of a target channel according to a channel quality of the target channel;

A second processing module 802, configured to determine, according to the target code rate, first retransmission configuration information of the target channel, where the first retransmission configuration information includes: a first set of code block numbers and a set of code block indices;

and a third processing module 803, configured to perform K repeated transmissions with the terminal according to the first retransmission configuration information, where K represents the total number of repeated transmissions, and K is a positive integer.

Optionally, the second processing module 802 includes:

Optionally, the second processing sub-module includes:

Optionally, the third processing sub-module includes:

Wherein the third processing unit includes:

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the second processing module 802 includes:

a fifth processing sub-module, configured to, for a second type of repeated transmission that does not meet the second preset condition, according to the formula:determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, the apparatus further comprises:

wherein the first DCI includes at least one of:

first indication information;

Code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, the third processing module 803 includes:

Optionally, the sixth processing submodule includes:

The third embodiment of the present invention corresponds to the method of the first embodiment, and all the implementation means in the first embodiment are applicable to the embodiment of the channel transmission device, so that the same technical effects can be achieved.

Fourth embodiment

As shown in fig. 9, an embodiment of the present invention provides a channel transmission apparatus 900, which is applied to a terminal, and includes:

a first obtaining module 901, configured to obtain first retransmission configuration information of a target channel, where the first retransmission configuration information includes: a first set of code block numbers and a set of code block indices;

and a fourth processing module 902, configured to perform K repeated transmissions with the network device according to the first retransmission configuration information, where K represents a total number of repeated transmissions, and K is a positive integer greater than or equal to 1.

Optionally, the first obtaining module 901 includes:

Wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, the first obtaining module 901 includes:

Optionally, the eighth processing sub-module includes:

Optionally, the tenth processing unit includes:

Optionally, the eleventh processing unit includes:

wherein the third processing subunit comprises:

Wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the eighth processing sub-module includes:

Optionally, the thirteenth processing unit includes:

a fifth processing subunit, configured to, for a second type of repeated transmission that does not meet the second preset condition, according to the formula: Determining a code block index of the second type of repeated transmission, wherein i is an index of the second type of repeated transmission in all repeated transmissions; />Is the set of indexes of the second type of retransmission among all the retransmissions.

Optionally, the fourth processing module 902 includes:

Optionally, the tenth processing submodule includes:

Optionally, the eleventh processing sub-module includes:

The fourth embodiment of the present invention corresponds to the method of the second embodiment, and all the implementation means in the second embodiment are applicable to the embodiment of the channel transmission device, so that the same technical effects can be achieved.

Fifth embodiment

In order to better achieve the above object, as shown in fig. 10, a fifth embodiment of the present invention further provides a network device, including:

a processor 1000; and a memory 1020 connected to the processor 1000 through a bus interface, the memory 1020 storing programs and data used by the processor 1000 in performing operations, the processor 1000 calling and executing the programs and data stored in the memory 1020.

Wherein the transceiver 1010 is coupled to the bus interface for receiving and transmitting data under the control of the processor 1000; the processor 1000 is configured to read a program in the memory 1020 to perform the following steps:

Wherein in fig. 10, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by the processor 1000 and various circuits of the memory, represented by the memory 1020, are chained together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1010 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1030 may also be an interface capable of interfacing with an internal connection requiring device including, but not limited to, a keypad, display, speaker, microphone, joystick, etc., for different terminals. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 may store data used by the processor 1000 in performing operations.

Optionally, the processor 1000 is specifically configured to, when determining the first set of code blocks of the target channel:

Determining the third code block number in the ith repeated transmission according to the first bit capacity, the maximum bit capacity and the second code block number contained in the transmission block TB in the ith repeated transmission, wherein i is an integer which is more than or equal to 0 and less than K;

Optionally, the processor 1000 is specifically configured to, when determining the third number of code blocks in the ith repeated transmission according to the first bit capacity in the ith repeated transmission, the maximum bit capacity, and the second number of code blocks included in the transport block TB:

Optionally, the processor 1000 is specifically configured to, when determining the first set of code blocks of the target channel according to the third number of code blocks:

wherein the processor 1000 is specifically configured to, when determining the first set of code block numbers according to the total number of code blocks:

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the processor 1000 is specifically configured to, when determining the code block index set of the target channel:

Optionally, the processor 1000 is specifically configured to, when determining the code block index set of the target channel according to a selection result:

Optionally, the processor 1000 is further configured to:

wherein the first DCI includes at least one of:

first indication information;

Code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

Optionally, when the processor 1000 performs K repeated transmissions with the terminal according to the first retransmission configuration information, the processor is specifically configured to:

Optionally, when encoding is performed for each retransmission according to the first retransmission configuration information to obtain a target signal corresponding to each retransmission, the processor 1000 is specifically configured to:

respectively to m _i Each of the code blocks is encodedPerforming rate matching on the bit sequence to obtain m _i A first codeword;

let m _i Merging the first code words to obtain target code words;

The network equipment provided by the invention can determine the first retransmission configuration information of the target channel according to the target code rate of the target channel, namely, the first code block number set and the code block index set in the configuration repeat transmission, and then can carry out repeat transmission with the terminal according to the first retransmission configuration information, so that the actual transmission code rate is closer to the expected target code rate by reasonably configuring the number of information bits of each repeat transmission, thereby improving the overall transmission performance; in addition, any repeated transmission of the target channel in the embodiment of the invention bears all or part of the CB of one TB, and after the repeated transmission of the target channel is combined, all the CBs of the TB can be completely transmitted, thereby ensuring the integrity of the TB transmission.

Sixth embodiment

In order to better achieve the above object, as shown in fig. 11, a sixth embodiment of the present invention further provides a terminal, including:

A processor 1100; and a memory 1120 connected to the processor 1100 through a bus interface, the memory 1120 storing programs and data used by the processor 1100 when performing operations, the processor 1100 calling and executing the programs and data stored in the memory 1120.

Wherein the transceiver 1110 is coupled to the bus interface for receiving and transmitting data under the control of the processor 1100; the processor 1100 is configured to read a program in the memory 1120 to perform the following steps:

Wherein in fig. 11, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1110 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1130 may also be an interface capable of interfacing with an internal connection requiring device for a different terminal, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 may store data used by the processor 1100 in performing operations.

Optionally, the processor 1100 is specifically configured to, when acquiring the first retransmission configuration information of the target channel:

receiving first DCI sent by the network equipment;

wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

acquiring a target code rate of the target channel;

Optionally, the processor 1100 is specifically configured to, when acquiring the first set of code block numbers of the target channel:

Optionally, the processor 1100 is specifically configured to, when determining the third number of code blocks in the ith retransmission according to the first bit capacity in the ith retransmission, the maximum bit capacity, and the second number of code blocks included in the TB:

Optionally, the processor 1100 is specifically configured to, when determining the first set of code blocks of the target channel according to the third number of code blocks:

wherein, the processor 1100 is specifically configured to, when determining the first set of code block numbers according to the total number of code blocks:

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

Optionally, the processor 1100 is specifically configured to, when acquiring the code block index set of the target channel:

wherein x represents the index of the jth code block in the ith retransmission in TB, n _k Representing the number of code blocks contained in the kth retransmissionM represents the number of second code blocks contained in TB, i and j are integers greater than or equal to 0, and i is less than K;

Optionally, according to the selection result, the processor 1100 is specifically configured to, when determining the code block index set of the target channel:

Optionally, the processor 1100 is specifically configured to, when performing K repeated transmissions with the network device according to the first retransmission configuration information:

Optionally, when performing rate recovery on the codeword soft bits corresponding to each repetition transmission according to the first retransmission configuration information, the processor 1100 is specifically configured to:

Optionally, when decoding the code block level soft bit sequence corresponding to each repeated transmission according to the first retransmission configuration information, the processor 1100 is specifically configured to:

According to the terminal provided by the invention, the terminal can acquire the first code block number set and the code block index set of repeated transmission of the target channel according to the first retransmission configuration information, so that the actual transmission code rate is closer to the expected target code rate by reasonably configuring the information bit number of repeated transmission each time, and the overall transmission performance is improved.

Those skilled in the art will appreciate that all or part of the steps of implementing the above-described embodiments may be implemented by hardware, or may be implemented by instructing the relevant hardware by a computer program comprising instructions for performing some or all of the steps of the above-described methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

In addition, a specific embodiment of the present invention also provides a computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, implements the steps of the method as in the first embodiment described above, or implements the steps of the method as in the second embodiment described above. And the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

Furthermore, it should be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. Also, the steps of performing the series of processes described above may naturally be performed in chronological order in the order of description, but are not necessarily performed in chronological order, and some steps may be performed in parallel or independently of each other. It will be appreciated by those of ordinary skill in the art that all or any of the steps or components of the methods and apparatus of the present invention may be implemented in hardware, firmware, software, or a combination thereof in any computing device (including processors, storage media, etc.) or network of computing devices, as would be apparent to one of ordinary skill in the art after reading this description of the invention.

The object of the invention can thus also be achieved by running a program or a set of programs on any computing device. The computing device may be a well-known general purpose device. The object of the invention can thus also be achieved by merely providing a program product containing program code for implementing said method or apparatus. That is, such a program product also constitutes the present invention, and a storage medium storing such a program product also constitutes the present invention. It is apparent that the storage medium may be any known storage medium or any storage medium developed in the future. It should also be noted that in the apparatus and method of the present invention, it is apparent that the components or steps may be disassembled and/or assembled. Such decomposition and/or recombination should be considered as equivalent aspects of the present invention. The steps of executing the series of processes may naturally be executed in chronological order in the order described, but are not necessarily executed in chronological order. Some steps may be performed in parallel or independently of each other.

While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.

Claims

1. A channel transmission method applied to a network device, comprising:

2. The method of claim 1, wherein determining the first set of code block numbers for the target channel comprises:

3. The method of claim 2 wherein said determining a third number of code blocks in the ith retransmission based on the first bit capacity in the ith retransmission, the maximum bit capacity, and the second number of code blocks included in the transport block TB comprises:

4. The method of claim 2, wherein said determining said first set of code block numbers for said target channel based on said third code block number comprises:

wherein the first operation includes at least one of:

the target code rate is increased;

the transport block size is reduced.

5. The method of claim 1, wherein determining the set of code block indices for the target channel comprises at least one of:

wherein x represents the index of the jth code block in the ith retransmission in TB, n _k Representing the number of code blocks contained in the kth repeated transmission in the first code block number set, wherein M represents the number of second code blocks contained in TB, i and j are integers greater than or equal to 0, and i is smaller than K;

6. The method of claim 5, wherein said determining said set of code block indices for said target channel based on a selection result comprises:

7. The method of claim 1, wherein after said determining the first retransmission configuration information for the target channel based on the target code rate, the method further comprises:

Wherein the first DCI includes at least one of:

first indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

8. The method of claim 1, wherein the performing K repeated transmissions with the terminal according to the first retransmission configuration information includes:

9. The method of claim 8, wherein the encoding for each retransmission according to the first retransmission configuration information to obtain the target signal corresponding to each retransmission comprises:

let m _i Merging the first code words to obtain target code words;

10. A channel transmission method applied to a terminal, comprising:

11. The method of claim 10, wherein the obtaining the first retransmission configuration information for the target channel comprises:

receiving first DCI sent by the network equipment;

wherein the first DCI includes at least one of:

First indication information;

code block bitmap information;

wherein the first indication information includes at least one of:

start code block index information;

termination code block index information;

code block number information;

the resource of the code block index indicates a value.

12. The method of claim 10, wherein the obtaining the first retransmission configuration information for the target channel comprises:

acquiring a target code rate of the target channel;

13. The method of claim 12, wherein obtaining the first set of code block numbers for the target channel comprises:

14. The method of claim 10, wherein obtaining the set of code block indices for the target channel comprises at least one of:

wherein x represents the jth in the ith retransmissionIndex of code block in TB, n _k Representing the number of code blocks contained in the kth repeated transmission, M representing the number of second code blocks contained in the TB, i and j being integers greater than or equal to 0, and i being less than K;

15. The method of claim 14, wherein said determining said set of code block indices for said target channel based on a selection result comprises:

16. The method of claim 10, wherein the performing K repeated transmissions with the network device according to the first retransmission configuration information comprises:

17. The method of claim 16, wherein the performing rate recovery on the codeword soft bits corresponding to each retransmission according to the first retransmission configuration information, respectively obtaining a code block level soft bit sequence corresponding to each retransmission, comprises:

18. The method of claim 16, wherein decoding the code block level soft bit sequence corresponding to each retransmission according to the first retransmission configuration information comprises:

19. A channel transmission apparatus for use in a network device, comprising:

20. A channel transmission apparatus, applied to a terminal, comprising:

21. A network device, comprising: transceiver, memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the channel transmission method according to any of claims 1 to 9 when the computer program is executed.

22. A terminal, comprising: transceiver, memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the channel transmission method according to any of the claims 10 to 18 when the computer program is executed.

23. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the channel transmission method according to any one of claims 1 to 9 or the steps of the channel transmission method according to any one of claims 10 to 18.