CN113784356B - Method, device, equipment and storage medium for determining communication parameters - Google Patents

Abstract

The embodiment of the present application discloses a method, device, device, and storage medium for determining communication parameters. The method includes: determining the first index value of the transmission block size in the communication parameters; The code block parameter in the communication parameters; according to the code block parameter, the transmission block size is determined by using the transmission block calculation model. In this way, it not only simplifies the calculation of communication parameters such as transmission block size, code block size, and number of code blocks, and reduces computational complexity; but also saves storage resources by simplifying the storage table, thereby reducing costs.

Description

A method, device, equipment and storage medium for determining communication parameters

Technical Field

The present application relates to the field of communication technology, and in particular to a method, apparatus, device and storage medium for determining communication parameters.

Background Art

In the Long Term Evolution (LTE) system, the Transport Block Size (TBS) carried by the data channel can be obtained by looking up the TBS table. Then, in the process of encoding and decoding the transport block, if the data block size obtained after adding the Cyclic Redundancy Check (CRC) exceeds 6144, the encoding process needs to perform code block segmentation and code block CRC addition on the data block, and the decoding process needs to perform code block merging and code block CRC removal; therefore, it is also necessary to determine the code block parameters such as the code block size and the number of code blocks according to the transport block size.

In the related art, the process of determining the code block parameters according to the transmission block size is rather cumbersome, and there are also operations such as division and searching the code block size (Code Block Size, CBS) table, which has high computational complexity; in addition, since the related art directly stores the TBS table and the CBS table, the storage resources are consumed greatly, which will also increase the cost.

Summary of the invention

The present application proposes a method, apparatus, device and storage medium for determining communication parameters, which can not only simplify the calculation of communication parameters such as transmission block size, code block size, number of code blocks, and reduce calculation complexity; but also save storage resources by simplifying storage tables, thereby reducing costs.

To achieve the above purpose, the technical solution of this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a method for determining a communication parameter, the method comprising:

Determine a first index value of a transport block size in a communication parameter;

Determine a code block parameter in the communication parameter according to the first index value and the code block mapping table;

According to the code block parameters, the transport block size is determined using a transport block calculation model.

In a second aspect, an embodiment of the present application provides a communication parameter determination device, the communication parameter determination device comprising a determination unit, a query unit and a calculation unit; wherein,

A determining unit, configured to determine a first index value of a transport block size in a communication parameter;

A query unit, configured to determine a code block parameter in the communication parameter according to the first index value and the code block mapping table;

The calculation unit is configured to determine the transport block size according to the code block parameters using the transport block calculation model.

In a third aspect, an embodiment of the present application provides a terminal device, the terminal device comprising a memory and a processor; wherein:

A memory for storing computer programs that can be executed on the processor;

A processor is used to execute the method described in the first aspect when running a computer program.

In a fourth aspect, an embodiment of the present application provides a computer storage medium, which stores a computer program, and when the computer program is executed by at least one processor, it implements the method described in the first aspect.

The embodiment of the present application provides a method, device, equipment and storage medium for determining communication parameters, which determines the first index value of the transmission block size in the communication parameters; determines the code block parameters in the communication parameters according to the first index value and the code block mapping table; and determines the transmission block size using the transmission block calculation model according to the code block parameters. In this way, the code block parameters are determined by looking up the code block mapping table, which avoids the complex calculation process of determining the code block parameters according to the transmission block size, and the process of calculating the transmission block size according to the code block parameters is also relatively simple; it can be seen that the technical solution of the present application can not only simplify the calculation of communication parameters such as the transmission block size, the code block size, and the number of code blocks, and reduce the calculation complexity; but also save storage resources by simplifying the storage table, thereby reducing costs.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a network architecture of a communication system;

FIG2 is a schematic diagram of a calculation process of a transport block size and a code block parameter;

FIG3 is a schematic diagram of a functional block diagram of a transmitter and a receiver of an LTE system;

FIG4 is a flow chart of a method for determining communication parameters provided in an embodiment of the present application;

FIG5 is a schematic diagram of a calculation process of a transport block size and a code block parameter provided in an embodiment of the present application;

FIG6 is a detailed flowchart of a method for determining communication parameters provided in an embodiment of the present application;

FIG7 is a schematic diagram of another calculation process of transport block size and code block parameters provided in an embodiment of the present application;

FIG8 is a schematic diagram of a calculation process of another transport block size and code block parameters provided in an embodiment of the present application;

FIG9 is a schematic diagram of the composition structure of a communication parameter determination device provided in an embodiment of the present application;

FIG10 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

FIG. 11 is a schematic diagram of the composition structure of another terminal device provided in an embodiment of the present application.

DETAILED DESCRIPTION

In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

In the following description, reference is made to "some embodiments", which describe a subset of all possible embodiments, but it is understood that "some embodiments" may be the same subset or different subsets of all possible embodiments, and may be combined with each other without conflict. It should also be noted that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It is understandable that "first\second\third" may be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.

Before further describing the embodiments of the present application in detail, the nouns and terms involved in the embodiments of the present application are described first. The nouns and terms involved in the embodiments of the present application are subject to the following interpretations:

Long Term Evolution (LTE)

New Radio (NR)

Physical Uplink Shared Channel (PUSCH)

Physical Downlink Shared Channel (PDSCH)

Physical Downlink Control Channel (PDCCH)

Modulation and Coding Scheme (MCS)

Transport Block Size (TBS)

Code Block Size (CBS)

Evolved Base Station (eNodeB, eNB)

User Equipment (UE)

Channel Quality Indication (CQI)

Signal to Interference plus Noise Ratio (SINR)

Physical Resource Block (PRB)

Cyclic Redundancy Check (CRC)

Orthogonal Frequency Division Multiplexing (OFDM)

It should be understood that the technical solution of the embodiment of the present application can be applied to LTE (4G) systems, NR (5G) systems or other wireless communication systems (including various future communication systems). Referring to Figure 1, a schematic diagram of a network architecture of a communication system is shown. As shown in Figure 1, the network architecture may include a network device 101 and a terminal device 102. Among them, the network device 101 can provide communication services to multiple terminal devices 102, and multiple network devices 101 can also provide communication services to the same terminal device 102.

It should be noted that the network device 101 is a device that provides wireless communication functions for terminal devices, including but not limited to: evolutionary base stations (evolutional Node B, referred to as eNB or e-NodeB for short) in LTE systems, NR systems or LAA-LTE systems, macro base stations, micro base stations (also referred to as "small base stations"), pico base stations, base transceiver stations (Base Transceiver Station, BTS), baseband units (Base Band Unit, BBU), access points (Access Point, AP), transmission points (Transmission Point, TP) or new generation base stations (new generation Node B, gNodeB), etc.

The terminal device 102 may be referred to as a user equipment (UE). The terminal device may be a personal communication service (PCS) phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. The terminal device may also be a smart phone, a tablet computer, a handheld computer, a mobile station (MS), a mobile terminal, etc. The terminal device may communicate with one or more network devices via a radio access network (RAN). For example, the terminal device may be a mobile phone (or a "cellular" phone) or a computer with a terminal device, etc. For example, the terminal device may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device, which exchanges voice and/or data with a wireless access network. The terminal device may also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future evolving network, etc., which is not limited in the implementation of this application.

Specifically, in the LTE system, the eNB can schedule and allocate resources to the UE according to information such as service transmission requirements and channel conditions, thereby achieving efficient transmission of uplink and downlink data and providing guaranteed service quality. Among them, the LTE system adopts adaptive modulation and coding technology. The UE measures the SINR of the channel for downlink data and maps it to CQI and reports it to the eNB; the eNB measures and obtains the SINR and CQI of the channel for uplink data. Here, the larger the CQI value, the better the corresponding channel quality, so that a higher-order modulation method and a higher coding rate can be selected. Furthermore, the eNB can determine the MCS index based on the CQI and send it to the UE through the PDCCH. The UE can obtain the modulation method and TBS index value by looking up the table based on the MCS index value, and then determine the transport block size by looking up the table based on the TBS index value and the number of PRBs allocated by the eNB.

In the 3rd Generation Partnership Project (3GPP) standard protocol, multiple TBS tables are defined in the LTE R16 version, where the table for single-layer transmission has 44 rows and 110 columns, corresponding to 44 TBS index values (expressed as I _TBs ) and 110 PRB numbers (expressed as N _PRB , N _PRB = 1 to 110). Here, the parts with smaller values and larger values are shown in Table 1, which shows an example of a TBS table for single-layer transmission.

Table 1

As can be seen from Table 1, the value range of the transport block size is 16 to 137792, in bits; 18 bits are required here. Thus, if this table is stored according to the original data, a total storage space of 44×110×18=87120 bits is required.

In addition, during the encoding and decoding process of the transport block, if the data block size after CRC addition exceeds 6144, the encoding process needs to segment the data block and add code block CRC, while the decoding process needs to merge the code blocks and remove the code block CRC; therefore, it is necessary to calculate the code block parameters such as the number of code blocks and the code block size according to the transport block size. The specific calculation steps of the code block parameters are as follows:

(1) Assuming that the transport block size is A, the data block size after CRC addition is calculated as B=A+L′, where L′ is the number of CRC bits added.

(2) The maximum code block size is Z = 6144. If B ≤ Z, then the code block CRC bit number L = 0, the number of code blocks C = 1, and the total number of valid bits added by the code block CRC B′ = B; if B> Z, then the code block CRC bit number L = 24, the number of code blocks The total number of valid bits added by the code block CRC is B′=B+C·L. Among them, the operator Indicates rounding up. Regardless of the rounding rules, the value after the decimal point is rounded up to the integer plus 1.

(3) Table 2 shows an example of CBS representation, where i _cbs represents the code block size index value and K represents the code block size. Specifically, the smallest K that satisfies C·K≥B′ is searched in Table 2, denoted as K ₊ . If C＝1, let C ₊ ＝1, K _- ＝0, C _- ＝0; if C>1, let K _- be the largest K that satisfies K＜K ₊ in Table 2, and the difference is denoted as Δ _K ＝K ₊ -K _- , then C ₊ = CC _- . Where K ₊ represents a larger code block size, C ₊ represents a larger number of code blocks, K _- represents a smaller code block size, C _- represents a smaller number of code blocks; operator It means rounding down, regardless of the rounding rules, and the value with decimals after the decimal point is given directly ignoring the decimals.

Table 2

As can be seen from Table 2, the value range of the code block size is 40 to 6144, in bits, which need to be represented by 13 bits. Thus, if stored according to Table 2, a total storage space of 188×13=2444 bits is required.

It can be seen that the process of calculating the code block parameters according to the transport block size is relatively cumbersome, and there are operations such as division and search, and the calculation is relatively complex. In addition, according to the adaptive modulation and coding technology, the eNB will dynamically determine the MCS index value, resulting in that the transport block size may change frequently, and each change requires the above calculation process to be repeated. See Figure 2, which shows a schematic diagram of the calculation process of the transport block size and code block parameters. As shown in Figure 2, after obtaining the MCS index value (I _MCS ), the modulation mode (Q _m ) and the TBS index value (I _TBS ) are found from the modulation mode and transport block index table; then, according to the TBS index value and the number of PRBs allocated by the eNB (N _PRB ), the transport block size (A) is found through the TBS table; then, the calculation module of the number of code blocks and the code block size is used to obtain the number of code blocks (C) and the code block size (K).

Refer to Figure 3, which shows a schematic functional block diagram of a transmitter and a receiver of an LTE system. As shown in Figure 3, the transmitter may include a coding module, a modulation module, a reference signal generation module, a resource mapping module, an OFDM baseband signal generation module and a transmitter RF module, and the receiver may include a receiver RF module, a timing and frequency synchronization module, a reference signal generation module, a channel estimation and equalization module, a demodulation module and a decoding module, and the transmitter RF module is connected to the receiver RF module. In an embodiment of the present application, after obtaining and calculating the transmission block size and code block parameters, the coding module corresponding to the transmitter and the decoding module corresponding to the receiver are used.

That is to say, directly storing the TBS table and the CBS table currently consumes a lot of storage resources, resulting in an increase in cost; and after obtaining the transmission block size by looking up the table, the code block parameters need to be calculated based on the transmission block size in the subsequent encoding and decoding process. The calculation process of the existing technical solutions is cumbersome, and there are operations such as division and searching the code block size (Code Block Size, CBS) table, and the calculation complexity is high.

The embodiment of the present application provides a method for determining communication parameters, by determining the first index value of the transmission block size in the communication parameters; determining the code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the transmission block size according to the code block parameters using the transmission block calculation model. In this way, the code block parameters are determined by looking up the code block mapping table, which avoids the complex calculation process of determining the code block parameters according to the transmission block size, and the process of calculating the transmission block size according to the code block parameters is also relatively simple; it can be seen that the technical solution of the present application can not only simplify the calculation of communication parameters such as the transmission block size, the code block size, and the number of code blocks, and reduce the calculation complexity; but also save storage resources by simplifying the storage table, thereby reducing costs.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

In one embodiment of the present application, referring to FIG4 , a flow chart of a method for determining communication parameters provided in an embodiment of the present application is shown. As shown in FIG4 , the method may include:

S401: Determine a first index value of a transport block size in a communication parameter.

It should be noted that in the embodiment of the present application, the method is applied to a communication parameter determination device, or a terminal device integrated with the device. That is to say, the execution subject of the embodiment of the present application is a terminal device, and the communication parameters here may include a transmission block size and a code block parameter, and the code block parameter may include a code block size and the number of code blocks.

It should also be noted that, in the embodiment of the present application, the first index value of the transport block size can be represented by I _tbs . Specifically, in the LTE system, after determining the MCS index value, the network device can send it to the terminal device through the PDCCH; then the terminal device can determine the second index value of the transport block size (represented by I _TBS ) according to the MCS index value, and then determine the first index value of the transport block size. Therefore, in some embodiments, for S401, the first index value of the transport block size in the communication parameter can include:

Determining a second index value of a transport block size;

According to the second index value and the number of PRBs allocated by the network device, a first index value of the transport block size is obtained by looking up the deduplication transport block index table.

Further, in some embodiments, the determining the second index value of the transport block size may include:

Receive the MCS index value sent by the network device;

According to the MCS index value, a second index value of the transport block size is obtained by looking up the modulation mode and transport block index table.

It should be noted that the modulation mode and transport block index table and the deduplication transport block index table are both stored in the terminal device. The deduplication transport block index table is obtained by removing duplicate values according to the aforementioned Table 1.

It can be understood that the table for single-layer transmission in the LTE system (such as Table 1) has a total of 44 rows and 110 columns, corresponding to 44 TBS index values and 110 PRB numbers, with a total of 4840 TBS values. There are a large number of duplicate values in these 4840 TBS values. After removing these duplicate values, the TBS values can be arranged in order from small to large, thereby obtaining 202 different TBS values. See Table 3, which shows a schematic table of a de-duplication transport block mapping table provided in an embodiment of the present application. As shown in Table 3, the corresponding relationship between _Itbs and the transport block size (TBS value) is provided here.

Table 3

It can be seen that according to Table 3, the original TBS value can be stored instead of the deduplicated TBS value, so that the original TBS table can be converted into a deduplicated transmission block index table. For example, some rows and columns of the original TBS table shown in Table 1 are converted into the deduplicated transmission block index table shown in Table 4.

Table 4

It should be noted that after obtaining the second index value (I _TBS ) of the TBS and the number of PRBs (N _PRB ), the first index value (I _tbs ) of the TBS can be determined according to I _TBS and N _PRB . In some embodiments, after determining the first index value of the transport block size, the method may further include:

According to the first index value of the transport block size, querying a deduplication transport block mapping table to obtain a target transport block size corresponding to the first index value;

The target transport block size is determined as the transport block size.

That is, after obtaining the second index value (I _TBS ) of the TBS and the number of PRBs (N _PRB ), according to I _TBS and N _PRB , the first index value (I _tbs ) of the TBS can be firstly obtained by looking up in the deduplication transport block index table (Table 4), and then the transport block size can be determined by looking up in the deduplication transport block mapping table (Table 3) according to the index value.

It should also be noted that after the transport block size is obtained, code block parameters, such as the code block size and the number of code blocks, may be determined according to a calculation method defined in the 3GPP standard protocol.

In a specific embodiment, the number of code blocks C and the total number of valid bits B′ added by the code block CRC can be obtained through the calculation steps (1) and (2) of the code block parameters in the related art. In the calculation step (3), the smallest K that satisfies C·K≥B′ is searched from Table 2, expressed as K ₊ . According to the calculation, it can be found that for all the transport block sizes in Table 3, a code block size K ₊ can always be found that satisfies C·K ₊ ＝B′, then C ₊ ＝C, C _- ＝0, indicating that all code block sizes are equal to K＝K ₊ ＝B′/C.

However, since each transport block size corresponds to a unique code block parameter combination of the number of code blocks C and the code block size K, the calculation of the code block parameters in the related art is relatively complicated; therefore, in the embodiment of the present application, the code block parameters corresponding to all transport block sizes can be pre-calculated and stored, that is, a code block mapping table is established.

S402: Determine a code block parameter in a communication parameter according to a first index value and a code block mapping table.

It should be noted that, in the embodiment of the present application, the code block mapping table can be used to indicate the correspondence between the transport block size index value, the number of code blocks and the code block size index value. In this case, for S402, the code block parameters in the communication parameters are determined according to the first index value and the code block mapping table, which may include:

According to the first index value, look up in a code block mapping table to obtain the number of target code blocks and the target code block size index value corresponding to the first index value;

According to the target code block size index value, the target code block size is determined using a code block calculation model;

The target code block number and target code block size are determined as code block parameters in the communication parameters.

It should be noted that each transport block size corresponds to a unique code block parameter combination of the number of code blocks (C) and the code block size (K), but the calculation of the code block parameters in the related art is relatively complicated; therefore, in the embodiment of the present application, the code block parameters corresponding to all transport block sizes can be pre-calculated and stored. According to the above Table 2, each code block size (K) corresponds to a code block size index value ( _icbs ), and its value range is _{1≤icbs≤188} , so the transport block size can be mapped one by one to a code block parameter combination (C, _icbs ) of the number of code blocks (C) and the code block size index value ( _icbs ). The specific mapping relationship is shown in Table 5, which is the code block mapping table.

Table 5

I _tbs C i _cbs I _tbs C i _cbs I _tbs C i _cbs I _tbs C i _cbs I _tbs C i _cbs I _tbs C i _cbs 0 1 1 34 1 65 68 1 113 102 1 170 136 3 178 170 10 182 1 1 2 35 1 66 69 1 115 103 1 173 137 3 181 171 10 185 2 1 3 36 1 67 70 1 117 104 1 176 138 3 184 172 11 180 3 1 4 37 1 68 71 1 119 105 1 179 139 3 188 173 11 183 4 1 6 38 1 69 72 1 121 106 1 182 140 4 167 174 11 187 5 1 8 39 1 70 73 1 123 107 1 186 141 4 170 175 12 182 6 1 10 40 1 72 74 1 124 108 2 141 142 4 173 176 12 185 7 1 12 41 1 73 75 1 125 109 2 143 143 4 176 177 13 181 8 1 14 42 1 74 76 1 126 110 2 145 144 4 179 178 13 183 9 1 16 43 1 76 77 1 127 111 2 147 145 4 182 179 13 184 10 1 17 44 1 78 78 1 128 112 2 149 146 4 185 180 13 187 11 1 18 45 1 80 79 1 129 113 2 151 147 5 169 181 14 183 12 1 twenty one 46 1 82 80 1 130 114 2 153 148 5 172 182 14 187 13 1 25 47 1 84 81 1 131 115 2 155 149 5 175 183 15 184 14 1 27 48 1 86 82 1 132 116 2 157 150 5 178 184 15 187 15 1 31 49 1 88 83 1 133 117 2 159 151 5 181 185 16 184 16 1 34 50 1 90 84 1 134 118 2 161 152 5 184 186 16 188 17 1 35 51 1 92 85 1 135 119 2 164 153 5 188 187 17 185 18 1 36 52 1 93 86 1 136 120 2 167 154 6 175 188 17 186 19 1 40 53 1 94 87 1 137 121 2 170 155 6 178 189 18 184 20 1 41 54 1 95 88 1 139 122 2 173 156 6 181 190 18 186 twenty one 1 42 55 1 96 89 1 141 123 2 176 157 6 184 191 18 188 twenty two 1 46 56 1 97 90 1 143 124 2 179 158 6 188 192 19 185 twenty three 1 48 57 1 98 91 1 145 125 2 182 159 7 177 193 19 187 twenty four 1 50 58 1 99 92 1 147 126 2 185 160 7 180 194 20 184 25 1 52 59 1 100 93 1 149 127 2 188 161 7 183 195 20 186 26 1 54 60 1 101 94 1 151 128 3 157 162 7 187 196 twenty one 185 27 1 56 61 1 102 95 1 153 129 3 158 163 8 178 197 twenty one 186 28 1 58 62 1 103 96 1 155 130 3 160 164 8 181 198 twenty one 188 29 1 60 63 1 104 97 1 157 131 3 163 165 8 184 199 twenty two 185 30 1 61 64 1 105 98 1 159 132 3 166 166 8 188 200 twenty two 187 31 1 62 65 1 107 99 1 161 133 3 169 167 9 181 201 twenty three 186 32 1 63 66 1 109 100 1 164 134 3 172 168 9 184 33 1 64 67 1 111 101 1 167 135 3 175 169 9 188

It can be seen that the code block mapping table (Table 5) corresponding to the transport block size can be stored to replace the original TBS value table (Table 3), and 202×13=2626 bits are required. In this way, when determining the transport block size, Table 5 can be queried to obtain the number of code blocks (C) and the code block size index value (i _cbs ), and the corresponding code block size can also be calculated according to the code block size index value.

It should also be noted that, although the code block size (K) can be obtained by looking up the code block size index value ( _icbs ) in the CBS table (Table 2), storing the CBS table requires 188×13=2444 bits of storage resources. In order to save storage resources, the code block size in the embodiment of the present application can be calculated using a code block calculation model.

In some embodiments, determining the target code block size by using a code block calculation model according to the target code block size index value may include:

According to the target code block size index value, the target code block size is calculated using formula (1);

Wherein, i _cbs represents the target code block size index value, and K represents the target code block size. and The calculation formula is as follows:

Here, the operator It means rounding down, regardless of the rounding rules, and the value with decimals after the decimal point is directly ignored; the operator "mod" means finding the remainder, and the result is the remainder obtained by dividing the first operand by the second operand.

For example, in integer division, there are only two cases: divisible or not divisible. When not divisible, a remainder will be generated. The remainder operation a mod b = c (b is not 0) means that the remainder of integer a divided by integer b is c. For example, 7 mod 3 = 1. It is the floor operator, called Floor in English. For example,

S403: Determine the transport block size according to the code block parameters using a transport block calculation model.

It should be noted that the code block parameters here refer to the target code block number and target code block size described in the aforementioned embodiment. Therefore, after obtaining the target code block number and target code block size, the transport block size can be calculated using the transport block calculation model.

In some embodiments, for S403, determining the transport block size using a transport block calculation model according to the code block parameters may include:

According to the number of target code blocks and the target code block size, the transport block size is calculated using formula (4);

Wherein, A represents the transport block size, C represents the number of target code blocks, K represents the target code block size, L=24 represents the number of code block cyclic redundancy check bits, and L′=24 represents the number of transport block cyclic redundancy check bits.

In short, the embodiment of the present application can calculate the transport block size and code block parameters according to the MCS index value (I _MCS ) and the number of PRBs (N _PRB ). Referring to FIG5 , it shows a schematic diagram of a calculation process of the transport block size and code block parameters provided by the embodiment of the present application. As shown in FIG5 , after the MCS index value (I _MCS ) is obtained, the modulation mode (Q _m ) and the second index value (I _TBS ) of the transport block size are found from the modulation mode and transport block index table; then, according to the second index value (I _TBS ) of the transport block size and the number of PRBs (N _PRB ), the first index value (I _tbs ) of the transport block size is found through the de-duplication transport block index table; then, the number of code blocks (C) and the code block size index value (i _cbs ) are determined using the code block mapping table, and the code block size (K) can be calculated according to the code block size index value (i _cbs ) and the first calculation module for calculating the code block size; then, the transport block size (A) can be calculated through the second calculation module for calculating the transport block size. Here, since the storage resources required for the deduplication transport block index table are 44×100×8 bits and the storage resources required for the code block mapping table are 202×13 bits, a storage and calculation method for transport block size and code block parameters is proposed for the LTE system, which can reduce storage resources and reduce calculation complexity.

In a specific embodiment, see Figure 6, which shows a detailed flow chart of a method for determining communication parameters provided in an embodiment of the present application. As shown in Figure 6, the calculation process of the transport block size and code block parameters can be as follows:

S601: According to the MCS index value I _MCS , a second index value I _TBS of the transport block size is obtained by looking up a table.

S602: According to the second index value I _TBS and the number of allocated PRBs N _PRB , search the deduplication transport block index table to obtain a first index value I _tbs of the transport block size.

S603: According to the first index value I _tbs of the transport block size, search the code block mapping table to obtain the number C of code blocks and the code block size index value i _cbs .

S604: Calculate the code block size K according to the code block size index value i _cbs .

S605: Calculate the transport block size A according to the number C of code blocks and the code block size K.

It should be noted that, based on the calculation process shown in FIG6 , since the size of the original TBS table stored for single-layer transmission in the related art is 44×110×18=87120 bits, and the size of the original CBS table is 188×13=2444 bits; therefore, if the original tables (Table 1 and Table 2) are stored, a total of 89564 bits of storage resources are required. However, in the technical solution of the embodiment of the present application, 44×110×8=38720 bits are required to store the deduplication transmission block index table (Table 4) for single-layer transmission, and 202×13=2626 bits are required to store the code block mapping table (Table 5) for the transmission block size and code block parameters, requiring a total of 41346 bits of storage resources, which can save about 54% of storage resources compared to the 89564 bits required to store the original table.

It should also be noted that, based on the calculation process shown in Figure 6, the technical solution of the embodiment of the present application pre-calculates and stores the code block parameters, avoiding the complicated process of calculating the code block parameters according to the transmission block size, and calculating the transmission block size according to the code block parameters is very simple and easy, that is, the calculation of the transmission block size and code block parameters is simplified, avoiding the complicated process of calculating the code block parameters according to the transmission block size, and reducing the calculation complexity.

In addition, the technical solution of the embodiment of the present application takes the TBS table used for single-layer transmission as an example to illustrate the storage and calculation method of the transmission block size and code block parameters; however, the technical solution of the embodiment of the present application is also applicable to the TBS table used for multi-layer transmission, which will not be described in detail here.

This embodiment provides a method for determining communication parameters, by determining the first index value of the transmission block size in the communication parameters; determining the code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the transmission block size according to the code block parameters using the transmission block calculation model. In this way, the code block parameters are determined by looking up the code block mapping table, which avoids the complex calculation process of determining the code block parameters according to the transmission block size, and the process of calculating the transmission block size according to the code block parameters is also relatively simple; it can be seen that this technical solution can not only simplify the calculation of communication parameters such as the transmission block size, the code block size, and the number of code blocks, and reduce the calculation complexity; but also save storage resources by simplifying the storage table, thereby reducing costs.

In another embodiment of the present application, based on the method described in the aforementioned embodiment, when the target code block size is determined by using the code block calculation model according to the target code block size index value, about 2444 bits of storage resources can be saved by the code block calculation model. However, since the storage resources consumed are relatively not large, the embodiment of the present application can also directly store the original CBS table (Table 2) and then obtain the target code block size by table lookup.

In a specific embodiment, for the aforementioned step S402, determining the code block parameter in the communication parameter according to the first index value and the code block mapping table may include:

According to the first index value, look up in a code block mapping table to obtain the number of target code blocks and the target code block size index value corresponding to the first index value;

According to the target code block size index value, a target code block size corresponding to the target code block size index value is obtained by looking up the code block index table;

The target code block number and target code block size are determined as code block parameters in the communication parameters.

It should be noted that the code block mapping table here can be used to indicate the correspondence between the transport block size index value, the number of code blocks and the code block size index value, as shown in Table 5. In addition, the code block index table here is the CBS table shown in Table 2.

Referring to Fig. 7, it shows another schematic diagram of the calculation process of the transport block size and code block parameters provided by an embodiment of the present application. As shown in Fig. 7, after obtaining the MCS index value (I _MCS ), the modulation mode (Q _m ) and the second index value (I _TBS ) of the transport block size are found from the modulation mode and transport block index table; then, according to the second index value (I _TBS ) of the transport block size and the number of PRBs (N _PRB ), the first index value (I _tbs ) of the transport block size is found through the de-duplication transport block index table; then, the number of code blocks (C) and the code block size index value (i _cbs ) are determined using the code block mapping table shown in Table 5, and according to the code block size index value (i _cbs ) and the CBS table shown in Table 2, the code block size (K) can be found in the table; then, through the second calculation module of the transport block size, the transport block size (A) can be calculated.

In another embodiment of the present application, based on the method described in the above embodiment, in the code block mapping table shown in Table 5, the transport block size is mapped to the number of code blocks (C) and the code block size index value (i _cbs ), and the required storage space is minimal, which is 202×13=2626 bits. However, in the embodiment of the present application, the transport block size can also be directly mapped to the number of code blocks (C) and the code block size (K), in which case 202×18=3636 bits of storage space are required. The calculation process is shown in Figure 5.

In a specific embodiment, for the aforementioned step S402, determining the code block parameter in the communication parameter according to the first index value and the code block mapping table may include:

According to the first index value, look up in a code block mapping table to obtain the number of target code blocks and the target code block size corresponding to the first index value;

The target code block number and target code block size are determined as code block parameters in the communication parameters.

It should be noted that the code block mapping table here can be used to indicate the correspondence between the transport block size index value, the number of code blocks and the code block size. According to the code block mapping table, the code block parameters (target number of code blocks and target code block size) can be directly determined by looking up the table.

Referring to Fig. 8, it shows a schematic diagram of another calculation process of transport block size and code block parameters provided by an embodiment of the present application. As shown in Fig. 8, after obtaining the MCS index value (I _MCS ), the modulation mode (Q _m ) and the second index value (I _TBS ) of the transport block size are found from the modulation mode and transport block index table; then, according to the second index value (I _TBS ) of the transport block size and the number of PRBs (N _PRB ), the first index value (I _tbs ) of the transport block size is found through the de-duplication transport block index table; then, the number of code blocks (C) and the code block size (K) are determined using the new code block mapping table; then, the transport block size (A) can be calculated through the transport block size calculation module.

In summary, the specific implementation of the aforementioned embodiment is elaborated in detail through the aforementioned embodiment. It can be seen that through the technical scheme of the aforementioned embodiment, not only can the relevant tables be simplified, and the original TBS table and CBS table can be replaced by the deduplication transport block index table shown in Table 4 and the code block mapping table shown in Table 5, but also the calculation process of the transport block size and the code block parameters can be improved based on the simplified tables. Specifically, a calculation method for calculating the code block size (K) according to the code block size index value ( _icbs ) and calculating the transport block size according to the number of code blocks (C) and the code block size (K) is proposed; in this way, on the one hand, compared with the stored original table, about 54% of storage resources are saved; on the other hand, the calculation of the transport block size and the code block parameters is simplified, the complex process of calculating the code block parameters according to the transport block size is avoided, and the calculation complexity is reduced.

In another embodiment of the present application, based on the same inventive concept as the above-mentioned embodiment, see FIG9 , which shows a schematic diagram of the composition structure of a communication parameter determination device provided in an embodiment of the present application. As shown in FIG9 , a communication parameter determination device 90 may include: a determination unit 901, a query unit 902, and a calculation unit 903; wherein,

The determining unit 901 is configured to determine a first index value of a transport block size in a communication parameter;

A query unit 902 is configured to determine a code block parameter in the communication parameter according to the first index value and the code block mapping table;

The calculation unit 903 is configured to determine the transport block size according to the code block parameters using the transport block calculation model.

In some embodiments, referring to FIG. 9 , the communication parameter determination device 90 may further include a receiving unit 904 configured to receive an MCS index value sent by a network device;

The query unit 902 is also configured to obtain a second index value of the transport block size from the modulation mode and transport block index table according to the MCS index value; and to obtain a first index value of the transport block size from the deduplication transport block index table according to the second index value and the number of PRBs allocated by the network device.

In some embodiments, the code block parameter includes a code block size and a number of code blocks; accordingly, the query unit 902 is further configured to, when the code block mapping table is used to indicate a correspondence between a transport block size index value, a code block number, and a code block size index value, query the code block mapping table according to the first index value to obtain a target code block number and a target code block size index value corresponding to the first index value;

The calculation unit 903 is further configured to determine the target code block size using the code block calculation model according to the target code block size index value;

The determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters in the communication parameters.

In some embodiments, the query unit 902 is further configured to, when the code block mapping table is used to indicate the correspondence between the transport block size index value, the number of code blocks and the code block size index value, query the code block mapping table according to the first index value to obtain the number of target code blocks and the target code block size index value corresponding to the first index value; and query the code block index table according to the target code block size index value to obtain the target code block size corresponding to the target code block size index value;

The determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters in the communication parameters.

In some embodiments, the query unit 902 is further configured to, when the code block mapping table is used to indicate the correspondence between the transport block size index value, the number of code blocks and the code block size, query the code block mapping table according to the first index value to obtain the target number of code blocks and the target code block size corresponding to the first index value;

The determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters in the communication parameters.

In some embodiments, the calculation unit 903 is specifically configured to calculate the transport block size using the following formula according to the number of target code blocks and the target code block size:

Wherein, A represents the transport block size, C represents the number of target code blocks, K represents the target code block size, L=24 represents the number of code block cyclic redundancy check bits, and L′=24 represents the number of transport block cyclic redundancy check bits.

In some embodiments, the query unit 902 is further configured to, after determining the first index value of the transport block size in the communication parameter, query a deduplication transport block mapping table according to the first index value of the transport block size to obtain a target transport block size corresponding to the first index value;

The determining unit 901 is further configured to determine the target transport block size as the transport block size.

It can be understood that in this embodiment, a "unit" can be a part of a circuit, a part of a processor, a part of a program or software, etc., and of course it can also be a module, or it can be non-modular. Moreover, the components in this embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional module.

If the integrated unit is implemented in the form of a software function module and is not sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment is essentially or the part that contributes to the prior art or the whole or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the method described in this embodiment. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

Therefore, this embodiment provides a computer storage medium, which stores a computer program. When the computer program is executed by at least one processor, the steps of the method described in any one of the above embodiments are implemented.

Based on the composition of the above-mentioned communication parameter determination device 90 and the computer storage medium, see Figure 10, which shows a schematic diagram of the composition structure of a terminal device provided in an embodiment of the present application. As shown in Figure 10, the terminal device 100 may include: a communication interface 1001, a memory 1002 and a processor 1003; each component is coupled together through a bus system 1004. It can be understood that the bus system 1004 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1004 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, various buses are labeled as bus system 1004 in Figure 10. Among them, the communication interface 1001 is used to receive and send signals in the process of sending and receiving information between other external network elements;

Memory 1002, used to store computer programs that can be run on processor 1003;

The processor 1003 is configured to execute, when running the computer program:

Determine a first index value of a transport block size in a communication parameter;

Determine a code block parameter in the communication parameter according to the first index value and the code block mapping table;

According to the code block parameters, the transport block size is determined using a transport block calculation model.

It can be understood that the memory 1002 in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus random access memory (DRRAM). The memory 1002 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

The processor 1003 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 1003. The above-mentioned processor 1003 can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to execute, or the hardware and software modules in the decoding processor are combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1002, and the processor 1003 reads the information in the memory 1002 and completes the steps of the above method in combination with its hardware.

It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

For software implementation, the techniques described herein can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

Optionally, as another embodiment, the processor 1003 is further configured to execute the steps of the method described in any one of the aforementioned embodiments when running the computer program.

Based on the composition of the communication parameter determination device 90 and the computer storage medium, see Figure 11, which shows a schematic diagram of the composition structure of another terminal device provided in an embodiment of the present application. As shown in Figure 11, the terminal device 100 may include the communication parameter determination device 90 described in any of the above embodiments.

In the embodiment of the present application, for the terminal device 100, the code block mapping table is used to look up the code block parameters, which avoids the complex calculation process of determining the code block parameters according to the transmission block size, and the process of calculating the transmission block size according to the code block parameters is also relatively simple; it can be seen that the technical solution of the present application can not only simplify the calculation of communication parameters such as the transmission block size, code block size, and the number of code blocks, and reduce the calculation complexity; but also by simplifying the storage table, it can save storage resources and thus reduce costs.

It should be noted that, in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "includes a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (9)

1. A method for determining communication parameters, characterized in that the method comprises: determining a first index value of the transport block size in the communication parameters; Determine a code block parameter in the communication parameters according to the first index value and a code block mapping table; determining the size of the transport block by using a transport block calculation model according to the code block parameters; The determining the first index value of the transmission block size in the communication parameters includes: Receive the modulation and coding format MCS index value sent by the network device; According to the MCS index value, look up a table from the modulation mode and transport block index table to obtain the second index value of the transport block size; According to the second index value and the number of PRBs allocated by the network device, the first index value of the transmission block size is obtained by looking up a table from the deduplication transmission block index table; wherein, the deduplication transmission The block index table is obtained by removing duplicate values according to the original transmission block size TBS table. 2. The method according to claim 1, wherein the code block parameter comprises a code block size and a code block number; In the case where the code block mapping table is used to represent the correspondence between the first index value, the number of code blocks, and the code block size index value, according to the first index value and the code block mapping table, Determining the code block parameters in the communication parameters includes: According to the first index value, look up a table from the code block mapping table to obtain the number of target code blocks and the target code block size index value corresponding to the first index value; Determine the target code block size according to the target code block size index value; The number of target code blocks and the size of the target code blocks are determined as code block parameters in the communication parameters. 3. The method according to claim 2, wherein when the code block mapping table is used to represent the corresponding relationship between the transport block size index value, the number of code blocks and the code block size index value, the According to the first index value and the code block mapping table, determining the code block parameters in the communication parameters includes: According to the first index value, look up a table from the code block mapping table to obtain the number of target code blocks and the target code block size index value corresponding to the first index value; According to the target code block size index value, look up a table from the code block index table to obtain the target code block size corresponding to the target code block size index value; wherein, the code block index table is a code block size CBS table; The number of target code blocks and the size of the target code blocks are determined as code block parameters in the communication parameters. 4. The method according to claim 2, wherein when the code block mapping table is used to represent the corresponding relationship between the transport block size index value, the number of code blocks and the size of the code block, the The first index value and the code block mapping table determine the code block parameters in the communication parameters, including: According to the first index value, look up a table from the code block mapping table to obtain the number of target code blocks and the size of the target code block corresponding to the first index value; The number of target code blocks and the size of the target code blocks are determined as code block parameters in the communication parameters. 5. The method according to any one of claims 2 to 4, characterized in that, according to the code block parameters, using a transport block calculation model to determine the size of the transport block comprises: According to the number of the target code block and the size of the target code block, the transmission block size is calculated by using formula (1); Wherein, A represents the size of the transmission block, C represents the number of the target code block, K represents the size of the target code block, L=24 represents the number of code block cyclic redundancy check bits, and L ^' =24 represents the transmission block The number of cyclic redundancy check bits. 6. The method according to claim 1, characterized in that, after determining the first index value of the transmission block size in the communication parameters, the method further comprises: According to the first index value of the transmission block size, look up a table from the deduplication transmission block mapping table to obtain the target transmission block size corresponding to the first index value; wherein, the deduplication transmission block mapping table provides the first a correspondence between the index value and the transport block size; The target transport block size is determined as the transport block size. 7. A device for determining communication parameters, characterized in that the device for determining communication parameters includes a determining unit, a query unit, and a computing unit; wherein, The determining unit is configured to determine a first index value of a transport block size in the communication parameters; The query unit is configured to determine a code block parameter in the communication parameters according to the first index value and a code block mapping table; The calculation unit is configured to determine the transmission block size by using a transmission block calculation model according to the code block parameters; The device for determining the communication parameters may also include: a receiving unit; Wherein, the receiving unit is configured to receive the MCS index value sent by the network device; The query unit is further configured to, according to the MCS index value, look up a table from the modulation scheme and the transport block index table to obtain a second index value of the transport block size; and according to the second index value and the number of PRBs allocated by the network device, from The first index value of the transport block size is obtained by looking up the table in the de-duplicated transport block index table; wherein, the de-duplicated transport block index table is obtained by removing duplicate values according to the original transport block size TBS table. 8. A terminal device, characterized in that the terminal device includes a memory and a processor; wherein, said memory for storing a computer program capable of running on said processor; The processor is configured to execute the method according to any one of claims 1 to 6 when running the computer program. 9. A computer storage medium, wherein the computer storage medium stores a computer program, and when the computer program is executed by at least one processor, the method according to any one of claims 1 to 6 is implemented.