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Data transmission method, system and relay device

A data transmission method and data technology, applied in the field of communication, can solve problems such as poor error correction ability, and achieve the effect of high error correction ability

Inactive Publication Date: 2011-06-22
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 process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: the encoded information of the source node needs to be repeatedly encoded on the relay node, and then sent to the destination node, resulting in poor error correction capability

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  • Data transmission method, system and relay device
  • Data transmission method, system and relay device
  • Data transmission method, system and relay device

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] figure 1 It is a flowchart of an embodiment of the data sending method of the present invention, such as figure 1 As shown, the method of this embodiment may include:

[0027] Step 101, receiving data sent by at least two source nodes;

[0028] For example, the relay device may receive data sent by at least two source nodes.

[0029] Th...

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Abstract

The embodiment of the invention provides a data transmission method, a data transmission system and a relay device. The method comprises the following steps of: receiving data from at least two source nodes; decoding the data respectively, performing joint coding on the decoded data and acquiring a check bit; and transmitting the check bit to a destination node, wherein the check bit is used for performing joint decoding on the data received by the destination node from the at least two source nodes by the destination node. In the embodiment of the invention, when forwarding the data transmitted by the source nodes, the relay device performs the joint coding on the decoded data, transmits the acquired check bit to the destination node and does not transmit repeatedly coded data to the destination node, so the destination node is endowed with relatively higher error correcting capability when performing the joint decoding on the coded data transmitted by the source nodes and the check bit transmitted by the relay device.

Description

technical field [0001] The embodiments of the present invention relate to the communication field, and in particular, to a data sending method and system and a relay device. Background technique [0002] Using the relay node to assist the mobile station to forward data can obtain additional diversity gain and improve the bit error rate (Bit Error Ratio, BER) of the receiving end, which is one of the effective means to improve the call quality of the mobile station at the edge of the cell. Using network coding technology on the relay node can further improve the forwarding efficiency of the relay node. [0003] Assuming that there are source nodes S1 and S2, in the prior art, the source nodes S1 and S2 can send information to the relay node and the destination node, the information is Low Density Parity Check (Low Density Parity Check, hereinafter referred to as: LDPC) encoded after the information. For relay nodes, LDPC decoding can be performed on the information sent by ...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04B7/15
Inventor 李颖宋光辉楼群芳
Owner HUAWEI TECH CO LTD