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A Cooperative Node Selection and Establishment Method for Distributed Wireless Multicast

A technique of coordinating nodes and establishing methods, which is applied in the field of communication, can solve the problems of low reliability of information transmission and high bit error rate of receiving nodes, etc., and achieve the effect of improving robustness, improving transmission reliability, and reducing multicast transmission error rate

Inactive Publication Date: 2016-01-13
HUAZHONG NORMAL UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

However, because different wireless channels have different bit error rates, in point-to-multipoint wireless multicast transmission, there are still some receiving nodes with high bit error rates and low reliability of information transmission.

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  • A Cooperative Node Selection and Establishment Method for Distributed Wireless Multicast
  • A Cooperative Node Selection and Establishment Method for Distributed Wireless Multicast
  • A Cooperative Node Selection and Establishment Method for Distributed Wireless Multicast

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Embodiment Construction

[0038] Multicast cooperative communication can be divided into multicast intra-group cooperation and multicast out-of-group cooperation. The cooperation within the multicast group is to use the receiving nodes of the multicast service to carry out cooperative communication. Multicast out-of-group cooperation is to use non-multicast service receiving nodes to carry out cooperative communication. Obviously, the use of wireless nodes in the multicast group to transmit cooperative information has a higher network utilization efficiency than that of wireless nodes outside the multicast group for cooperative communication, because the nodes in the multicast group are also users who receive multicast services, and the cooperative The cost is lower than using multicast out-of-group nodes. The invention proposes a method for establishing multicast cooperative nodes, and provides a multicast cooperative communication mechanism. In the method, an enhanced error correction code is added...

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Abstract

The invention provides a cooperative node selection establishment method for distribution type wireless multicast, wherein suitable multicast service subnodes are preferably selected to serve as cooperative nodes; and when all multicast subnodes are in failure, suitable group-out nodes and multicast group-in nodes are selected and combined to serve as the cooperative nodes. According to the cooperative node selection establishment method for distribution type wireless multicast, the robustness of multicast deployment IPTV (Internet Protocol Television) can be improved, the multicast transmission error rate is reduced, and the transmission reliability of IPTV under a wireless environment is improved.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for selecting and establishing a cooperative node for distributed wireless multicasting. Background technique [0002] The emergence of mobile IPTV (Interactive Internet Television) technology is based on people's demand for enjoying TV programs anytime and anywhere. The transmission of mobile TV programs through 3G network and Internet requires investment and establishment of corresponding network infrastructure, which costs a lot. Therefore, how to reduce the deployment capital investment of mobile TV technology while ensuring communication efficiency has become a hot research issue in the industry and academia. [0003] At present, more research is on the unicast cooperative communication of the point-to-point transmission mode. The unicast cooperative relay node selection is equivalent to selecting a matching node for a pair of source node and destination nod...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/63H04N21/6405H04B7/02H04B7/155
Inventor 陈怡高戈杨红云王赛姚华雄
Owner HUAZHONG NORMAL UNIV