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Data transmission method and equipment

A data transmission method and user equipment technology, applied in the field of data transmission methods and equipment, can solve problems such as increasing network burden, and achieve the effect of reducing network burden

Active Publication Date: 2010-12-22
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, it is necessary to randomly construct a parity check matrix for the user equipment before each encoding, and it is also necessary to transmit the parity check matrix to the base station, which increases the network burden

Method used

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  • Data transmission method and equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] refer to figure 1 , Embodiment 1 of the present invention provides a data transmission method, the method comprising:

[0048] 101. Construct K base matrices that can be utilized by user equipments that share a segment of resources.

[0049] Constructing K base matrices that can be used by user equipment sharing a segment of resources includes:

[0050] Use the progressive edge growth PEG algorithm to construct the first basis matrix on a bipartite graph;

[0051] Connect the variable nodes in the bipartite graph corresponding to the first k-1 base matrices to the variable nodes in the kth bipartite graph through the channel nodes to form a large graph, and use the PEG algorithm to construct the kth base on the large graph matrix, where 1

[0052] Wherein, the channel nodes in which the variable nodes in the bipartite graphs corresponding to the first k-1 basis matrices are respectively connected to the variable nodes of the kth bipartite graph through the chann...

Embodiment 2

[0061] refer to figure 2 , Embodiment 2 of the present invention provides a data transmission method, the method comprising:

[0062] 201. Determine the number K of user equipment sharing a segment of resources, budget the number of rows M and the number of columns N of the K parity check matrices, and budget the degree distribution λ of variable nodes in each parity check matrix k (x) and the degree distribution ρ of check nodes k (x), 1≤k≤K.

[0063] It should be noted that the number of check matrices to be calculated can be obtained by determining the number of user equipments sharing a resource, that is, the number of user equipments sharing a resource is equal to the number of check matrices to be obtained.

[0064] Wherein, M is the number of variable nodes in the check matrix, N is the number of check nodes in the check matrix, and the same M and N are used for different check matrices.

[0065] 202. Determine the dimension L of the unit matrix.

[0066] This step...

Embodiment 3

[0133] refer to Figure 5 , Embodiment 3 of the present invention provides a user equipment, including:

[0134] The storage unit 501 is configured to store K matrix information; wherein, the matrix information is used to indicate the corresponding base matrix and the number of shifts of the unit matrix corresponding to 1 in the corresponding base matrix;

[0135] The parity check matrix obtaining unit 502 is used to determine the matrix information used by oneself in the K matrix information, and obtain the parity check matrix according to the determined matrix information; wherein, the first base matrix in the K base matrices is in a The bipartite graph is constructed using the PEG algorithm. The k-th base matrix in the K base matrices is the variable node in the bipartite graph corresponding to the first k-1 base matrices and the variable in the k-th bipartite graph through the channel node. The nodes are connected to form a large graph, which is obtained by using the PEG ...

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Abstract

The embodiment of the invention provides a data transmission method and equipment. The method comprises the following steps of: constructing K basis matrixes which can be utilized by user equipment sharing the same section of resources; acquiring the shifting frequency of unit matrixes corresponding to 1 in the K basis matrixes; storing matrix information for indicating the shifting frequency of corresponding K basis matrixes and the unit matrixes corresponding to 1 in the K basis matrixes onto multiple user equipment; obtaining check matrixes by the user equipment according to the determinedmatrix information; and coding data to be sent and then sending, wherein the step for constructing K basis matrixes comprises the following procedures of: constructing a first basis matrix on a bipartite graph by utilizing a PEG algorithm; respectively connecting variable nodes corresponding to first k-1 basis matrixes in the bipartite graphs and the variable node in the kth bipartite graph through channel nodes to form a big graph; and constructing a kth basis matrix on the big graph by utilizing the PEG algorithm. The technical scheme of the embodiment of the invention is convenient for acquiring the check matrixes.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data transmission method and equipment. Background technique [0002] At present, the non-orthogonal multiple access method can obtain a larger system capacity than the orthogonal multiple access method. In the non-orthogonal multiple access method, the user equipment is based on the optimized irregular low-density parity check ( Low-density parity-check, LDPC) code degree distribution, construct the check matrix in a purely random way, and encode the data to be transmitted according to its own check matrix, send the encoded signal, and the signal sent by each user equipment In the channel, it is superimposed into a signal and sent to the base station, and each user equipment sends its own check matrix to the base station, and the base station can analyze the received signal according to the check matrix of each user equipment to obtain the data of each user equipment. ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W88/08H03M13/11
Inventor 别志松王艺陈大庚
Owner HUAWEI TECH CO LTD
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