CN113784356B - Communication parameter determining method, device, equipment and storage medium - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
- H04W28/18—Negotiating wireless communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/04—Traffic adaptive resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
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- H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/08—Load balancing or load distribution
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The embodiment of the application discloses a method, a device, equipment and a storage medium for determining communication parameters, wherein the method comprises the following steps: determining a first index value of the size of a transmission block in the communication parameters; determining code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters. Therefore, the calculation of communication parameters such as the size of a transmission block, the size of a code block, the number of the code blocks and the like can be simplified, and the calculation complexity is reduced; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for determining a communication parameter.
Background
In long term evolution (Long Term Evolution, LTE) systems, the transport block size (Transport Block Size, TBS) of a data channel bearer can be obtained by looking up a TBS table. Then in the process of coding and decoding the transmission block, if the size of the data block obtained after cyclic redundancy check (Cyclic Redundancy Check, CRC) addition exceeds 6144, the coding process needs to code block segmentation and code block CRC addition to the data block, and the decoding process needs to code block combination and code block CRC removal; it is therefore also necessary to determine code block parameters such as code block size and number of code blocks based on the transport block size.
In the related art, the process of determining the Code Block parameters according to the Size of the transmission Block is complicated, and operations such as division and searching a Code Block Size (CBS) table exist, so that the calculation complexity is high; in addition, since the related art directly stores the TBS table and the CBS table, the storage resource consumption is large, and the cost is raised.
Disclosure of Invention
The method, the device, the equipment and the storage medium for determining the communication parameters can simplify the calculation of the communication parameters such as the size of a transmission block, the size of a code block, the number of the code blocks and the like, and reduce the calculation complexity; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
In order to achieve the above purpose, the technical scheme of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a method for determining a communication parameter, where the method includes:
determining a first index value of the size of a transmission block in the communication parameters;
determining code block parameters in the communication parameters according to the first index value and the code block mapping table;
and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters.
In a second aspect, an embodiment of the present application provides a determining device for a communication parameter, where the determining device for a communication parameter includes a determining unit, a querying unit, and a calculating unit; wherein,,
A determining unit configured to determine a first index value of a transport block size in the communication parameter;
the inquiring unit is configured to determine code block parameters in the communication parameters according to the first index value and the code block mapping table;
and the calculating unit is configured to determine the size of the transmission block by using the transmission block calculating model according to the code block parameters.
In a third aspect, embodiments of the present application provide a terminal device, including a memory and a processor; wherein,,
a memory for storing a computer program capable of running on the processor;
a processor for performing the method as described in the first aspect when the computer program is run.
In a fourth aspect, embodiments of the present application provide a computer storage medium storing a computer program which, when executed by at least one processor, implements a method according to the first aspect.
The embodiment of the application provides a method, a device, equipment and a storage medium for determining communication parameters, wherein a first index value of a transmission block size in the communication parameters is determined; determining code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters. Thus, the code block mapping table is utilized to look up the table to determine the code block parameters, so that the complex calculation process of determining the code block parameters according to the size of the transmission block is avoided, and the process of calculating the size of the transmission block according to the code block parameters is simpler; therefore, the technical scheme of the application not only can simplify the calculation of communication parameters such as the size of the transmission block, the size of the code block, the number of the code blocks and the like, but also reduces the calculation complexity; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
Drawings
FIG. 1 is a schematic diagram of a network architecture of a communication system;
fig. 2 is a schematic diagram of a calculation process of a transport block size and a code block parameter;
fig. 3 is a schematic functional block diagram of a transmitter and a receiver of an LTE system;
fig. 4 is a flow chart of a method for determining communication parameters according to an embodiment of the present application;
fig. 5 is a schematic diagram of a calculation process of a transport block size and a code block parameter according to an embodiment of the present application;
fig. 6 is a detailed flowchart of a method for determining a communication parameter according to an embodiment of the present application;
fig. 7 is a schematic diagram of a calculation process of another transport block size and code block parameters according to an embodiment of the present application;
fig. 8 is a schematic diagram of a calculation process of a transport block size and a code block parameter according to another embodiment of the present application;
fig. 9 is a schematic structural diagram of a communication parameter determining device according to an embodiment of the present application;
fig. 10 is a schematic diagram of a composition structure of a terminal device according to an embodiment of the present application;
fig. 11 is a schematic diagram of a composition structure of another terminal device according to an embodiment of the present application.
Detailed Description
For a more complete understanding of the features and technical content of the embodiments of the present application, reference should be made to the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings, which are for purposes of illustration only and not intended to limit the embodiments of the present application.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.
In the following description, reference is made to "some embodiments" which describe a subset of all possible embodiments, but it is to be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with one another without conflict. It should also be noted that the term "first/second/third" in reference to the embodiments of the present application is used merely to distinguish similar objects and does not represent a specific ordering for the objects, it being understood that the "first/second/third" may be interchanged with a specific order or sequence, if allowed, to enable the embodiments of the present application described herein to be implemented in an order other than that illustrated or described herein.
Before describing embodiments of the present application in further detail, the terms and terminology involved in the embodiments of the present application will be described, where the terms and terminology involved in the embodiments of the present application are suitable for the following explanation:
Long term evolution (Long Term Evolution, LTE)
New wireless (New Radio, NR)
Physical uplink shared channel (Physical Uplink Shared Channel, PUSCH)
Physical downlink shared channel (Physical Downlink Shared Channel, PDSCH)
Physical downlink control channel (Physical Downlink Control Channel, PDCCH)
Modulation and coding format (Modulation and Coding Scheme, MCS)
Transport block size (Transport Block Size, TBS)
Code Block Size (CBS)
Evolution type base station (eNodeB, eNB)
User Equipment (User Equipment, UE)
Channel quality indication (Channel Quality Indication, CQI)
Signal to interference plus noise ratio (Signal to Interference plus Noise Ratio, SINR)
Physical resource block (Physical Resources Block PRB)
Cyclic redundancy check (Cyclic Redundancy Check, CRC)
Orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM)
It should be appreciated that the technical solution of the embodiments of the present application may be applied to an LTE (4G) system, an NR (5G) system, or other wireless communication systems (including various communication systems in the future). Referring to fig. 1, a network architecture diagram of a communication system is shown. As shown in fig. 1, the network architecture may include a network device 101 and a terminal device 102. Wherein the network device 101 may provide communication services to a plurality of terminal devices 102, and the plurality of network devices 101 may also provide communication services to the same terminal device 102.
It should be noted that, the network device 101 is a device that provides a wireless communication function for a terminal device, including but not limited to: an evolved Base station (evolutional Node B, which may be simply referred to as an eNB or an e-NodeB), a macro Base station, a micro Base station (which may also be referred to as a "small Base station"), a pico Base station, a Base transceiver station (Base Transceiver Station, BTS), a baseband Unit (BBU), an Access Point (AP), a transmission Point (Transmission Point, TP), a new generation Base station (new generation Node B, gndeb), or the like in the LTE system, the NR system, or the LAA-LTE system.
The terminal device 102 may be referred to as a User Equipment (UE). The Terminal device may be a personal communication service (Personal Communication Service, PCS) phone, cordless phone, session initiation protocol (Session Initiation Protocol, SIP) phone, wireless local loop (Wireless Local Loop, WLL) Station, personal digital assistant (Personal Digital Assistant, PDA) or the like, or a smart phone, tablet, palmtop, mobile Station (MS), mobile Terminal (Mobile Terminal) or the like, which may communicate with one or more network devices via a radio access network (Radio Access Network, RAN). For example, the terminal device may be a mobile telephone (or "cellular" telephone) or a computer or the like having a terminal device, e.g., a portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges voice and/or data with the radio access network. The terminal device may also be a handheld device, 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 evolution network, etc., which is not limited in this application.
Specifically, in the LTE system, the eNB may schedule and allocate resources to the UE according to information such as a service transmission requirement and a channel condition, so as to implement efficient transmission of uplink and downlink data, and may provide a service quality of a guaranteed service. The LTE system adopts an adaptive modulation and coding technology, and downlink data is measured by UE, mapped into CQI and reported to eNB; the uplink data is measured by the eNB and the SINR and CQI of the channel are obtained. Here, the larger the CQI value, the better the corresponding channel quality, so that a higher order modulation scheme and a higher coding rate can be selected. Further, the eNB can determine the MCS index according to the CQI and issue the MCS index to the UE through the PDCCH. The UE can obtain a modulation mode and a TBS index value according to the MCS index value table lookup, and then can determine the size of the transmission block through the table lookup according to the TBS index value and the PRB number distributed by the eNB.
In the third generation partnership project (3rd Generation Partnership Project,3GPP) standard protocol, LTE R16 version defines a number of TBS tables, where the tables for single layer transmission total 44 rows and 110 columns, corresponding to 44 TBS index values (in I TBs Indicated) and 110 PRB numbers (expressed in N PRB Representation, N PRB =1 to 110). Here, the smaller valued and larger valued portions 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 range of the transport block size is 16 to 137792 in bits; here represented by 18 bits. Thus, if this table is stored as original data, a total of 44×110×18=87120 bits of storage space is required.
In addition, in the process of encoding and decoding the transmission block, if the size of the data block obtained after the CRC addition 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 combination and code block CRC removal; therefore, code block parameters such as the number of code blocks and the size of the code blocks need to be calculated according to the size of the transmission block. 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 to be b=a+l ', where L' is the number of CRC bits added.
(2) The maximum code block size is Z=6144, if B is less than or equal to Z, the code block CRC bit number L=0, the code block number C=1, and the total effective bit number B' =B added by the code block CRC; if B >Z, the number of code blocks CRC bits l=24, the number of code blocksThrough code block CRC additionThe total significant bit number B' =b+c·l added. Wherein, operator->The representation rounds up, regardless of the rounding rule, the decimal point is followed by the value mean of the decimal plus 1.
(3) Table 2 shows an example of a CBS table in which i cbs Represents the code block size index value and K represents the code block size. Specifically, the minimum K satisfying C.K.gtoreq.B' is searched in Table 2, expressed as K + . If c=1, let C + ＝1，K - ＝0，C - =0; if C>1, let K - To satisfy K < K in Table 2 + The difference is expressed as delta for the maximum K of (2) K ＝K + -K - Then there isC + ＝C-C - . Wherein K is + Representing a larger code block size, C + Represents the larger number of code blocks, K - Representing a smaller code block size, C - Representing a smaller number of code blocks; operator->The representation rounds down, regardless of the rounding rule, the value of the decimal followed by the decimal point directly ignores the decimal given.
TABLE 2
As can be seen from table 2, the range of values for the code block size is 40 to 6144 in bits (bits); here it is indicated with 13 bits. Thus, if stored according to table 2, 188×13=2444 bits of storage space is required in total.
It can be seen that the rootThe process of calculating the code block parameters according to the size of the transmission block is complicated, operations such as division and search exist, and the calculation complexity is high. In addition, according to the adaptive modulation and coding technique, the eNB dynamically determines the MCS index value, which results in that the transport block size may change frequently, and each change requires repeating the above calculation process. Referring to fig. 2, a schematic diagram of a calculation process of a transport block size and a code block parameter is shown. As shown in fig. 2, when the MCS index value (I MCS ) Then, the modulation scheme (Q) is obtained by searching from the modulation scheme and the transport block index table m ) And TBS index value (I TBS ) The method comprises the steps of carrying out a first treatment on the surface of the Then based on the TBS index value and the number of PRBs (N PRB ) Searching through a TBS table to obtain a transmission block size (A); and then, the number (C) and the size (K) of the code blocks are obtained by using a calculation module of the number and the size of the code blocks.
Referring to fig. 3, a functional block diagram schematic of a transmitter and receiver of an LTE system is shown. As shown in fig. 3, the transmitter may include an encoding module, a modulation module, a reference signal generation module, a resource mapping module, an OFDM baseband signal generation module, and a transmitter radio frequency module, the receiver may include a receiver radio frequency 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 radio frequency module is connected to the receiver radio frequency module. In the embodiment of the application, after the transmission block size and the code block parameters are obtained and calculated, the transmission block size and the code block parameters correspond to an encoding module of a transmitter and a decoding module of a receiver.
That is, the TBS table and the CBS table are directly stored at present, so that the consumption of storage resources is large, and the cost is increased; after the Size of the transmission Block is obtained through table lookup, the Code Block parameter is needed to be calculated according to the Size of the transmission Block in the subsequent encoding and decoding process, the existing technical scheme has complicated calculation process, operations such as division and Code Block Size (CBS) table searching exist, and the calculation complexity is high.
The embodiment of the application provides a method for determining communication parameters, which comprises the steps of determining a first index value of a transmission block size in the communication parameters; determining code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters. Thus, the code block mapping table is utilized to look up the table to determine the code block parameters, so that the complex calculation process of determining the code block parameters according to the size of the transmission block is avoided, and the process of calculating the size of the transmission block according to the code block parameters is simpler; therefore, the technical scheme of the application not only can simplify the calculation of communication parameters such as the size of the transmission block, the size of the code block, the number of the code blocks and the like, but also reduces the calculation complexity; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
In an embodiment of the present application, referring to fig. 4, a flowchart of a method for determining a communication parameter provided in an embodiment of the present application is shown. As shown in fig. 4, the method may include:
s401: a first index value of a transport block size in the communication parameter is determined.
It should be noted that, in the embodiment of the present application, the method is applied to a determination device of a communication parameter, or a terminal device integrated with the device. That is, the execution body of the embodiment of the present application is a terminal device, where the communication parameters may include a transport block size and a code block parameter, and the code block parameter may include a code block size and a code block number.
It should also be noted that, in the embodiment of the present application, the first index value of the transport block size may be I tbs And (3) representing. Specifically, in the LTE system, after determining the MCS index value, the network device may issue the MCS index value to the terminal device through the PDCCH; the terminal device can then determine a second index value (I TBS Representation) and further determines a first index value for the transport block size. Thus, in some embodiments, for S401, the determining the first index value of the transport block size in the communication parameter may include:
determining a second index value of the transport block size;
and according to the second index value and the number of PRBs distributed by the network equipment, looking up a table from a de-duplication transmission block index table to obtain a first index value of the transmission block size.
Further, in some embodiments, the determining the second index value of the transport block size may include:
Receiving an MCS index value sent by network equipment;
and according to the MCS index value, obtaining a second index value of the transport block size from the modulation mode and the table lookup in the transport block index table.
The modulation scheme, the transport block index table and the de-duplication transport block index table are stored in the terminal device. The de-duplication transport block index table is obtained by removing duplication values according to the foregoing table 1.
It can be appreciated that the table for single layer transmission in the LTE system (e.g. table 1) has 44 rows and 110 columns, which corresponds to 44 TBS index values and 110 PRB numbers, and has 4840 TBS values. Among these 4840 TBS values, there are a large number of repeated values, and after these repeated values are removed, the TBS values may be arranged in order from small to large, thereby obtaining 202 different TBS values. Referring to table 3, a schematic table of a de-duplication transport block mapping table provided in an embodiment of the present application is shown. As shown in Table 3, I is provided herein tbs And the transport block size (TBS value).
TABLE 3 Table 3
It follows that according to table 3, the original TBS table can be converted into a deduplication transport block index table by storing the deduplicated TBS values instead of the original TBS values, for example, a partial rank of the original TBS table shown in table 1 is converted into a deduplication transport block index table shown in table 4.
TABLE 4 Table 4
In the case of obtaining the second index value (I TBS ) And PRB number (N PRB ) Thereafter, according to I TBS And N PRB Can determine a first index value (I tbs ). In some embodiments, after determining the first index value of the transport block size, the method may further comprise:
according to a first index value of the size of the transmission block, table lookup is carried out in a de-duplication transmission block mapping table to obtain a target transmission 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 ) And PRB number (N PRB ) Thereafter, according to I TBS And N PRB The first index value (I) of TBS may be obtained by first looking up a table in a de-duplication transport block index table (table 4) tbs ) And then, according to the index value, looking up a table in a de-duplication transmission block mapping table (table 3) to determine the transmission block size.
It should be further noted that after the transport block size is obtained, the 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 by the calculation steps (1) and (2) of the code block parameters in the related art. In the calculation step (3), the minimum K satisfying C.K.gtoreq.B' is searched from Table 2, expressed as K + . It can be found from the calculation that for all transport block sizes in table 3, one code block size K can always be found + Meets C.K + With =b', then there is 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 number C and code block size K, the calculation of the code block parameters in the related art is complex; therefore, in the embodiment of the present application, the code block parameters corresponding to all the transport block sizes may be pre-calculated and stored, that is, a code block mapping table may be established.
S402: and determining the code block parameters in the communication parameters according to the first index value and the code block mapping table.
It should be noted that, in the embodiment of the present application, the code block mapping table may be used to represent a correspondence relationship among the transport block size index value, the number of code blocks, and the code block size index value. In this case, for S402, the determining the code block parameter from the first index value and the code block mapping table may include:
according to the first index value, table look-up is carried out from a code block mapping table to obtain the number of target code blocks and the index value of the size of the target code blocks corresponding to the first index value;
Determining the size of the target code block by using a code block calculation model according to the index value of the size of the target code block;
the number of target code blocks and the target code block size are determined as code block parameters among the communication parameters.
It should be noted that, each transport block size corresponds to a unique code block number (C) and a code block size (K) of the code block parameter combination, but the calculation of the code block parameters in the related art is complex; therefore, in the embodiment of the present application, the code block parameters corresponding to all the transport block sizes may be calculated and stored in advance. According to Table 2, each code block size (K) corresponds to a code block size index value (i cbs ) The value range is 1-i cbs And 188, so that the transmission block size can be mapped into the number of code blocks (C) and the index value (i) cbs ) Code block parameter combinations (C, i cbs ) The specific mapping relationship is shown in table 5, namely a 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 | 21 | 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 |
| 21 | 1 | 42 | 55 | 1 | 96 | 89 | 1 | 141 | 123 | 2 | 176 | 157 | 6 | 184 | 191 | 18 | 188 |
| 22 | 1 | 46 | 56 | 1 | 97 | 90 | 1 | 143 | 124 | 2 | 179 | 158 | 6 | 188 | 192 | 19 | 185 |
| 23 | 1 | 48 | 57 | 1 | 98 | 91 | 1 | 145 | 125 | 2 | 182 | 159 | 7 | 177 | 193 | 19 | 187 |
| 24 | 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 | 21 | 185 |
| 27 | 1 | 56 | 61 | 1 | 102 | 95 | 1 | 153 | 129 | 3 | 158 | 163 | 8 | 178 | 197 | 21 | 186 |
| 28 | 1 | 58 | 62 | 1 | 103 | 96 | 1 | 155 | 130 | 3 | 160 | 164 | 8 | 181 | 198 | 21 | 188 |
| 29 | 1 | 60 | 63 | 1 | 104 | 97 | 1 | 157 | 131 | 3 | 163 | 165 | 8 | 184 | 199 | 22 | 185 |
| 30 | 1 | 61 | 64 | 1 | 105 | 98 | 1 | 159 | 132 | 3 | 166 | 166 | 8 | 188 | 200 | 22 | 187 |
| 31 | 1 | 62 | 65 | 1 | 107 | 99 | 1 | 161 | 133 | 3 | 169 | 167 | 9 | 181 | 201 | 23 | 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 follows that instead of the original TBS value table (table 3), a code block mapping table (table 5) corresponding to the transport block size may be stored, which requires 202×13=2626 bits. Thus, in determining the transport block size, the number of code blocks (C) and the code block size index value (i) can be first obtained by looking up Table 5 cbs ) And the corresponding code block size can also be calculated according to the code block size index value.
It should be noted that although the code block size (K) may be determined by the code block size index value (i cbs ) The CBS table (table 2) is obtained by looking up a table, but 188×13=2444 bits of storage resources are required for storing the CBS table. In order to save storage resources, the size of the code block in the embodiment of the present application may be calculated by using a code block calculation model.
In some embodiments, the determining the target code block size according to the target code block size index value using the code block calculation model may include:
calculating to obtain the size of the target code block according to the index value of the size of the target code block by using the formula (1);
wherein i is cbs The target code block size index value is represented, and K represents the target code block size. For the followingAnd->In other words, the calculation formula is as follows,
here, the operatorRepresenting a downward rounding, the decimal point followed by a value of the decimal directly ignoring the decimal given, regardless of the rounding rule; the operator "mod" represents the remainder, the result of which is the remainder of the first operand divided by the second operand.
Illustratively, in integer division, only the integer divisor and the integer divisor are both divisible. When the integer division is not possible, a remainder is generated, and a remainder operation a mod b=c (b is not 0) is taken to indicate that the remainder obtained by dividing the integer a by the integer b is c. For example, 7 mod 3 = 1. And for the case of To round down operators, english is called Floor. For example, the number of the cells to be processed,
s403: and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters.
It should be noted that, the code block parameters herein refer to the number of target code blocks and the target code block size described in the foregoing embodiments, and therefore, after the number of target code blocks and the target code block size are obtained, the transport block size may be calculated by using a transport block calculation model.
In some embodiments, for S403, determining the transport block size according to the code block parameter using the transport block calculation model may include:
calculating the size of the transmission block by using a formula (4) according to the number of the target code blocks and the size of the target code blocks;
/>
where a denotes a transport block size, C denotes a target code block number, K denotes a target code block size, l=24 denotes a code block cyclic redundancy check bit number, and L' =24 denotes a transport block cyclic redundancy check bit number.
Briefly, embodiments of the present application rely on MCS index values (I MCS ) And PRB number (N PRB ) The transport block size and code block parameters may be calculated. Referring to fig. 5, a schematic diagram of a calculation process of a transport block size and a code block parameter according to an embodiment of the present application is shown. As shown in fig. 5, when the MCS index value (I MCS ) Then, the modulation scheme (Q) is obtained by searching from the modulation scheme and the transport block index table m ) And a second index value (I TBS ) The method comprises the steps of carrying out a first treatment on the surface of the And then a second index value (I according to the transport block size TBS ) And PRB number (N PRB ) A first index value (I tbs ) The method comprises the steps of carrying out a first treatment on the surface of the Then, the number of code blocks (C) and the index value (i) of the size of the code blocks are determined by using the code block mapping table cbs ) According to the code block size index value (i cbs ) The first calculating module is used for calculating the size of the code block and can calculate the size (K) of the code block; the transport block size (a) can then be calculated by a second calculation module that calculates the transport block size. Here, since the storage resources required for the de-duplication 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 method for storing and calculating transport block size and code block parameters is proposed for the LTE system, which can reduce the storage resources and reduce the calculation complexity.
In a specific embodiment, referring to fig. 6, a detailed flowchart of a method for determining a communication parameter according to an embodiment of the present application is shown. As shown in fig. 6, the calculation process of the transport block size and the code block parameters may be as follows:
S601: according to MCS index value I MCS Look-up table to obtain the second index value I of the transport block size TBS 。
S602: according to the second index value I TBS And the number N of allocated PRBs PRB CheckingFinding the de-duplication transport block index table to obtain the first index value I of the transport block size tbs 。
S603: first index value I according to transport block size tbs Searching the code block mapping table to obtain the number C of the code blocks and the index value i of the size of the code blocks cbs 。
S604: index value i according to code block size cbs The code block size K is calculated.
S605: and calculating the transmission block size A according to the number C of the code blocks and the size K of the code blocks.
It should be noted that, based on the calculation process shown in fig. 6, since the original TBS table size stored for single layer transmission in the related art is 44×110×18=87120 bits, and the original CBS table size is 188×13=2444 bits; therefore 89564bit storage resources are required if the original tables (tables 1 and 2) are stored. However, in the technical solution of the embodiment of the present application, 44×110×8= 38720 bits are required for storing the deduplication transport block index table (table 4) for single-layer transmission, 202×13=2626 bits are required for storing the code block mapping table (table 5) of the transport block size and the code block parameters, 41346 bits of storage resources are required in total, and compared with 89564 bits required for storing the original table, about 54% of storage resources can be saved.
It should be further noted that, based on the calculation process shown in fig. 6, the technical solution of the embodiment of the present application calculates and stores the code block parameters in advance, thereby avoiding the complex process of calculating the code block parameters according to the size of the transmission block, and calculating the size of the transmission block according to the code block parameters is simple and easy, that is, simplifying the calculation of the size of the transmission block and the code block parameters, avoiding the complex process of calculating the code block parameters according to the size of the transmission block, and reducing the calculation complexity.
In addition, the technical solution of the embodiment of the application takes a TBS table for single-layer transmission as an example, and illustrates a storage and calculation method of a transport block size and a code block parameter; however, the technical solutions of the embodiments of the present application are equally applicable to TBS tables for multi-layer transmission, and are not described in detail here.
The embodiment provides a method for determining communication parameters, which comprises the steps of determining a first index value of a transmission block size in the communication parameters; determining code block parameters in the communication parameters according to the first index value and the code block mapping table; and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters. Thus, the code block mapping table is utilized to look up the table to determine the code block parameters, so that the complex calculation process of determining the code block parameters according to the size of the transmission block is avoided, and the process of calculating the size of the transmission block according to the code block parameters is simpler; therefore, the technical scheme not only can simplify the calculation of communication parameters such as the size of the transmission block, the size of the code block, the number of the code blocks and the like, but also reduces the calculation complexity; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
In another embodiment of the present application, based on the method described in the foregoing embodiment, when determining the target code block size according to the target code block size index value by using the code block calculation model, the storage resource of about 2444 bits can be saved by using the code block calculation model, but because the consumption of the storage resource is relatively not very large, the embodiment of the present application may also directly store the original CBS table (table 2), and then obtain the target code block size by using a table look-up method.
In a specific embodiment, for the step of S402, determining the code block parameter of the communication parameters according to the first index value and the code block mapping table may include:
according to the first index value, table look-up is carried out from a code block mapping table to obtain the number of target code blocks and the index value of the size of the target code blocks corresponding to the first index value;
according to the index value of the target code block size, table lookup is carried out in a code block index table to obtain the target code block size corresponding to the index value of the target code block size;
the number of target code blocks and the target code block size are determined as code block parameters among the communication parameters.
It should be noted that, the code block mapping table herein may be used to represent the correspondence between the index value of the transport block size, the number of code blocks, and the index value of the code block size, as shown in table 5. The code block index table here is a CBS table shown in table 2.
Referring to fig. 7, another transport block size and code block parameters provided by an embodiment of the present application are shownA schematic diagram of the calculation process. As shown in fig. 7, when the MCS index value (I MCS ) Then, the modulation scheme (Q) is obtained by searching from the modulation scheme and the transport block index table m ) And a second index value (I TBS ) The method comprises the steps of carrying out a first treatment on the surface of the And then a second index value (I according to the transport block size TBS ) And PRB number (N PRB ) A first index value (I tbs ) The method comprises the steps of carrying out a first treatment on the surface of the Then, the number of code blocks (C) and the index value of the code block size (i) are determined by using the code block mapping table shown in Table 5 cbs ) According to the code block size index value (i cbs ) And a CBS table shown in Table 2, which can be searched to obtain a code block size (K); the transport block size (a) can then be calculated by a second calculation module of transport block size.
In yet another embodiment of the present application, based on the method described in the previous embodiment, in the code block mapping table shown in table 5, the transport block size is mapped into the number of code blocks (C) and the code block size index value (i cbs ) The minimum memory space required is 202×13=2626 bits. However, in the embodiment of the present application, the transport block size may also be directly mapped to the number of code blocks (C) and the code block size (K), where a storage space of 202×18=3636 bits is required. The calculation flow is shown in fig. 5.
In a specific embodiment, for the step of S402, determining the code block parameter of the communication parameters according to the first index value and the code block mapping table may include:
according to the first index value, table look-up is carried out from a code block mapping table to obtain the number of target code blocks and the size of the target code blocks corresponding to the first index value;
the number of target code blocks and the target code block size are determined as code block parameters among the communication parameters.
It should be noted that, the code block mapping table herein may be used to represent a correspondence relationship among the index value of the transport block size, the number of code blocks, and the size of the code blocks. According to the code block mapping table, the code block parameters (the number of target code blocks and the size of the target code blocks) can be directly determined through table look-up.
Referring to FIG. 8, yet another embodiment of the present application is shownThe calculation process of the transmission block size and the code block parameters is schematically shown. As shown in fig. 8, when the MCS index value (I MCS ) Then, the modulation scheme (Q) is obtained by searching from the modulation scheme and the transport block index table m ) And a second index value (I TBS ) The method comprises the steps of carrying out a first treatment on the surface of the And then a second index value (I according to the transport block size TBS ) And PRB number (N PRB ) A first index value (I tbs ) The method comprises the steps of carrying out a first treatment on the surface of the Then determining the number (C) and the size (K) of the code blocks by using a new code block mapping table; the transport block size (a) can then be calculated by a transport block size calculation module.
As can be seen from the foregoing embodiments, the foregoing embodiments are described in detail, and it can be seen that, by adopting the technical solutions of the foregoing embodiments, not only the correlation table can be simplified, the de-duplication transmission block index table shown in table 4 and the code block mapping table shown in table 5 can be used to replace the original TBS table and CBS table, but also the calculation flow of the transmission block size and the code block parameters can be improved based on the simplified tables, specifically, the calculation flow of the transmission block size and the code block parameters according to the code block size index value (i cbs ) A calculation method for calculating a code block size (K) and a transport block size based on the number of code blocks (C) and the code block size (K); thus, 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 size of the transmission block and the parameters of the code block is simplified, the complex process of calculating the parameters of the code block according to the size of the transmission block is avoided, and the calculation complexity is reduced.
In still another embodiment of the present application, based on the same inventive concept as the previous embodiment, referring to fig. 9, a schematic diagram of a composition structure of a communication parameter determining apparatus according to an embodiment of the present application is shown. As shown in fig. 9, the communication parameter determining means 90 may include: a determination unit 901, a query unit 902, and a calculation unit 903; wherein,,
A determining unit 901 configured to determine a first index value of a transport block size in the communication parameter;
a query unit 902 configured to determine a code block parameter of the communication parameters according to the first index value and the code block mapping table;
the calculating unit 903 is configured to determine the transport block size according to the code block parameters by using a transport block calculation model.
In some embodiments, referring to fig. 9, the determining apparatus 90 of communication parameters may further include a receiving unit 904 configured to receive an MCS index value transmitted by the network device;
the query unit 902 is further configured to obtain a second index value of the transport block size from the modulation scheme and the table lookup in the transport block index table according to the MCS index value; and according to the second index value and the number of PRBs distributed by the network equipment, looking up a table from a de-duplication transmission block index table to obtain a first index value of the transmission block size.
In some embodiments, the code block parameters include code block size and code block number; correspondingly, the query unit 902 is further configured to, when the code block mapping table is used for representing the correspondence between the transmission block size index value, the code block number and the code block size index value, obtain, according to the first index value, the target code block number and the target code block size index value corresponding to the first index value from the table lookup;
The calculating unit 903 is further configured to determine the size of the target code block according to the index value of the size of the target code block by using the code block calculation model;
the determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters among the communication parameters.
In some embodiments, the query unit 902 is further configured to, in a case where the code block mapping table is used to represent a correspondence between the transmission block size index value, the code block number, and the code block size index value, obtain, according to the first index value, a target code block number and a target code block size index value corresponding to the first index value from the code block mapping table by looking up a table; according to the index value of the target code block size, table lookup is carried out in a code block index table to obtain the target code block size corresponding to the index value of the target code block size;
the determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters among the communication parameters.
In some embodiments, the query unit 902 is further configured to, in a case where the code block mapping table is used to represent a correspondence between the index value of the transport block size, the number of code blocks, and the size of the code blocks, obtain, according to the first index value, the number of target code blocks and the size of target code blocks corresponding to the first index value from the code block mapping table by looking up a table;
The determining unit 901 is further configured to determine the target code block number and the target code block size as code block parameters among the communication parameters.
In some embodiments, the calculating unit 903 is specifically configured to calculate, according to the number of target code blocks and the target code block size, a transport block size using the following formula;
where a denotes a transport block size, C denotes a target code block number, K denotes a target code block size, l=24 denotes a code block cyclic redundancy check bit number, and L' =24 denotes a transport block cyclic redundancy check bit number.
In some embodiments, the querying unit 902 is further configured to, after determining the first index value of the transport block size in the communication parameter, obtain, from the de-duplication transport block mapping table, a target transport block size corresponding to the first index value according to the first index value of the transport block size;
the determining unit 901 is further configured to determine a target transport block size as a transport block size.
It will be appreciated that in this embodiment, the "unit" may be a part of a circuit, a part of a processor, a part of a program or software, etc., and may of course be a module, or may be non-modular. Furthermore, the components in the present embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional modules.
The integrated units, if implemented in the form of software functional modules, may be stored in a computer-readable storage medium, if not sold or used as separate products, and based on such understanding, the technical solution of the present embodiment may be embodied essentially or partly in the form of a software product, which is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or processor to perform all or part of the steps of the method described in the present embodiment. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Accordingly, the present embodiment provides a computer storage medium storing a computer program which, when executed by at least one processor, implements the steps of the method of any of the preceding embodiments.
Based on the composition of the above-mentioned determination device 90 and the computer storage medium, referring to fig. 10, a schematic diagram of the composition structure of a terminal device according to an embodiment of the present application is shown. As shown in fig. 10, the terminal device 100 may include: a communication interface 1001, a memory 1002, and a processor 1003; the various components are coupled together by a bus system 1004. It is to be appreciated that the bus system 1004 serves to facilitate connective communication between these components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled in fig. 10 as bus system 1004 for clarity of illustration. The communication interface 1001 is configured to receive and send signals during the process of receiving and sending information with other external network elements;
a memory 1002 for storing a computer program capable of running on the processor 1003;
processor 1003, when executing the computer program, performs:
determining a first index value of the size of a transmission block in the communication parameters;
determining code block parameters in the communication parameters according to the first index value and the code block mapping table;
and determining the size of the transmission block by using a transmission block calculation model according to the code block parameters.
It is to be appreciated that the memory 1002 in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts 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 DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and Direct memory bus RAM (DRRAM). The memory 1002 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
While processor 1003 may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuitry of hardware in the processor 1003 or instructions in the form of software. The processor 1003 may be a general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 1002, and the processor 1003 reads the information in the memory 1002, and in combination with the hardware, performs the steps of the above method.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For a hardware implementation, the processing units may be implemented within one or more application specific integrated circuits (Application Specific Integrated Circuits, ASIC), digital signal processors (Digital Signal Processing, DSP), digital signal processing devices (DSP devices, DSPD), programmable logic devices (Programmable Logic Device, PLD), field programmable gate arrays (Field-Programmable Gate Array, FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, as another embodiment, the processor 1003 is further configured to perform the steps of the method of any of the previous embodiments when running the computer program.
Based on the composition of the above-described determination device 90 and the computer storage medium, referring to fig. 11, a schematic diagram of the composition structure of another terminal device according to the embodiment of the present application is shown. As shown in fig. 11, the terminal device 100 may include the communication parameter determining apparatus 90 according to any one of the foregoing embodiments.
In the embodiment of the present application, for the terminal device 100, the code block mapping table is utilized to look up the table to determine the code block parameters, so that a complex calculation process of determining the code block parameters according to the size of the transmission block is avoided, and a process of calculating the size of the transmission block according to the code block parameters is simpler; therefore, the technical scheme of the application not only can simplify the calculation of communication parameters such as the size of the transmission block, the size of the code block, the number of the code blocks and the like, but also reduces the calculation complexity; and by simplifying the storage table, the storage resource can be saved, and the cost is further reduced.
It should be noted that, in this application, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.
The methods disclosed in the several method embodiments provided in the present application may be arbitrarily combined without collision to obtain a new method embodiment.
The features disclosed in the several product embodiments provided in the present application may be combined arbitrarily without conflict to obtain new product embodiments.
The features disclosed in the several method or apparatus embodiments provided in the present application may be arbitrarily combined without conflict to obtain new method embodiments or apparatus embodiments.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A method for determining a communication parameter, the method comprising:
determining a first index value of the size of a transmission block in the communication parameters;
determining code block parameters in the communication parameters according to the first index value and a code block mapping table;
Determining the size of the transmission block by using a transmission block calculation model according to the code block parameters;
the determining the first index value of the transport block size in the communication parameter includes:
receiving a modulation and coding format (MCS) index value sent by network equipment;
according to the MCS index value, a second index value of the transport block size is obtained from a table look-up in a modulation mode and a transport block index table;
according to the second index value and the number of physical resource blocks PRB distributed by the network equipment, table lookup is performed from a de-duplication transmission block index table to obtain a first index value of the transmission block size; the de-duplication transmission block index table is obtained by removing duplication values according to an original transmission block size TBS table.
2. The method of claim 1, wherein the code block parameters include a code block size and a code block number;
under the condition that the code block mapping table is used for representing the corresponding relation among the first index value, the number of code blocks and the code block size index value, determining the code block parameters in the communication parameters according to the first index value and the code block mapping table comprises the following steps:
according to the first index value, table look-up is carried out in the code block mapping table to obtain the number of target code blocks and the index value of the size of the target code blocks corresponding to the first index value;
Determining the size of the target code block according to the index value of the size of the target code block;
and determining the number of the target code blocks and the size of the target code blocks as code block parameters in the communication parameters.
3. The method according to claim 2, wherein in the case where the code block mapping table is used to represent a correspondence between a transport block size index value, a code block number, and a code block size index value, the determining the code block parameter of the communication parameters according to the first index value and the code block mapping table includes:
according to the first index value, table look-up is carried out in the code block mapping table to obtain the number of target code blocks and the index value of the size of the target code blocks corresponding to the first index value;
according to the target code block size index value, table look-up is carried out from a 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;
and determining the number of the target code blocks and the size of the target code blocks as code block parameters in the communication parameters.
4. The method according to claim 2, wherein in the case where the code block mapping table is used to represent a correspondence between a transport block size index value, a code block number, and a code block size, the determining the code block parameter of the communication parameters according to the first index value and the code block mapping table includes:
According to the first index value, table look-up is carried out in the code block mapping table to obtain the number of target code blocks and the size of the target code blocks corresponding to the first index value;
and determining the number of the target code blocks and the size of the target code blocks as code block parameters in the communication parameters.
5. The method according to any one of claims 2 to 4, wherein said determining the transport block size using a transport block calculation model based on the code block parameters comprises:
calculating the size of the transmission block according to the number of the target code blocks and the size of the target code blocks by using a formula (1);
wherein a represents the transport block size, C represents the target code block number, K represents the target code block size, l=24 represents the code block cyclic redundancy check bit number, L ′ =24 represents the number of transport block cyclic redundancy check bits.
6. The method of claim 1, wherein after said determining the first index value of the transport block size in the communication parameter, the method further comprises:
according to the first index value of the transport block size, table look-up is carried out in a de-duplication transport block mapping table to obtain a target transport block size corresponding to the first index value; wherein the de-duplication transport block mapping table provides a correspondence between the first index value and transport block size;
And determining the target transport block size as the transport block size.
7. A device for determining communication parameters, which is characterized by comprising a determining unit, a query unit and a calculating unit; wherein,,
the determining unit is configured to determine a first index value of a transmission 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 computing unit is configured to determine the size of the transmission block by using a transmission block computing model according to the code block parameters;
the communication parameter determining device may further include: a receiving unit;
the receiving unit is configured to receive an MCS index value sent by the network equipment;
the inquiry unit is further configured to obtain a second index value of the size of the transmission block from the modulation mode and the table lookup in the transmission block index table according to the MCS index value; according to the second index value and the PRB number distributed by the network equipment, table lookup is performed in a de-duplication transmission block index table to obtain a first index value of the transmission block size; the de-duplication transmission block index table is obtained by removing duplication values according to an original transmission block size TBS table.
8. A terminal device, characterized in that the terminal device comprises a memory and a processor; wherein,,
the memory is used for storing a computer program capable of running on the processor;
the processor being adapted to perform the method of any of claims 1 to 6 when the computer program is run.
9. A computer storage medium storing a computer program which, when executed by at least one processor, implements the method of any one of claims 1 to 6.
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