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Network coding method, relay device and screening plant

A technology of network coding and relay devices, which is applied in the field of network coding and can solve problems such as inability to decode correctly and low decoding accuracy

Active Publication Date: 2013-08-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when each relay node optimizes the network encoding vector separately, the accuracy of decoding is low or cannot be decoded correctly

Method used

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  • Network coding method, relay device and screening plant
  • Network coding method, relay device and screening plant
  • Network coding method, relay device and screening plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The present invention provides a network coding method provided by an embodiment, such as figure 1 shown, including:

[0037] S101. Obtain network coding information. The network coding information includes the information of the network coding vector candidate set and the transmission rate candidate set; the transmission rate in the transmission rate candidate set is in one-to-one correspondence with the network coding vectors in the network coding vector candidate set.

[0038] S102. Screen out a full-rank network matrix according to the network coding information.

[0039] S103. Encode the received source node information according to the full-rank network matrix information matrix.

[0040] In this way, according to the information of the network coding vector candidate set and the transmission rate candidate set in the network coding information, a full-rank network matrix is ​​obtained, which ensures that each relay device in the network has a correct response t...

Embodiment 2

[0089] The present invention provides a network coding method provided by an embodiment, such as image 3 shown, including:

[0090] S301. Receive network coding information sent by the relay device. The network coding information includes information about a network coding vector candidate set and a transmission rate candidate set, and the transmission rate in the transmission rate candidate set is the same as that in the network coding vector candidate set. The network encoding vectors of are in one-to-one correspondence.

[0091] S302. Screen out a full-rank network matrix according to the network coding information.

[0092] S303. Send the full-rank network matrix to the relay device, so that the relay device encodes the received source node information according to the full-rank network matrix.

[0093] In this way, according to the information of the network coding vector candidate set and the transmission rate candidate set in the network coding information, a full-ra...

Embodiment 3

[0116] A relay device 70 provided in the embodiment of the present invention, its main structure can be referred to Figure 7 shown, including:

[0117] Processor 701, configured to obtain network coding information, where the network coding information includes information about a network coding vector candidate set and a transmission rate candidate set, and the transmission rates in the transmission rate candidate set correspond to the network coding vectors in the network coding vector candidate set .

[0118] The screening unit 702 is configured to screen out a full-rank network matrix according to the network coding information.

[0119] The encoding unit 703 is configured to encode and forward the received source node information according to the full-rank network matrix. Exemplarily, the encoding unit may be implemented by an encoder.

[0120] In this way, the processor obtains the network coding information including the information information of the network coding...

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PUM

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Abstract

The embodiment of the invention provides a network coding method, a relay device and a screening device, relates to the field of communication, can prevent the condition of matrix of unfilled rank in a network coding system, and improve the decoding correctness. The network coding method comprises the followings: network coding information is acquired, the network coding information comprises information in network coding vector candidate set and a transmission rate candidate set, and transmission rates in a transmission rate candidate set and network coding vectors in the network coding vector candidate set are in one-to-one correspondence; full rank network matrix can be screened out according to network coding information; and coding is performed on information of originating node received according to full rank network matrix. The embodiment of the invention provides the network coding method, the relay device and the screening plant, which are used for network coding.

Description

technical field [0001] The invention relates to the communication field, in particular to a network coding method, a relay device and a screening device. Background technique [0002] The traditional communication network transmits data by store-and-forward, that is, nodes other than the source device and sink device of the data are only responsible for routing, without any processing of the data content, and the relay node plays the role of the transponder. The above-mentioned source device may be used to send and / or encode data, and the above-mentioned sink device may be used to receive and / or decode data. [0003] Network coding is an information exchange technology that combines routing and coding. Its core idea is to linearly or nonlinearly process the information received on each channel on each node in the network, and then forward it to the downstream node. Relay nodes act as encoders or signal processors. [0004] In the prior art, in a multi-source multi-relay (M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/00H04B7/14
CPCH04B7/14H04B7/15521H04L1/0002H04L2001/0097H04L47/25H04L47/38
Inventor 魏莉莉陈文魏岳军金莹
Owner HUAWEI TECH CO LTD