Cost optimization-based P2P streaming media coverage network topology structure adjustment method

An adjustment method, streaming media technology, applied in the transmission system, electrical components, etc., can solve the problems of reducing the quality of streaming distribution services, not considering the survival time of nodes, not considering the cost of traffic, etc.
CN101997922AInactive Publication Date: 2011-03-30WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2011-03-30
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides a cost optimization-based P2P streaming media coverage network topology structure adjustment method. In the method, the dynamism and isomerism of nodes are fully considered, the topology information of nodes, link delay between the nodes and available uplink bandwidth of the nodes are utilized, high-capacity nodes are greedily selected from alternative nodes to serve as service nodes by calculating the weight of the link between the nodes and the capacity value of the alternative nodes. Meanwhile, due to an adaptive topology adjustment method for periodically and continuously adjusting nodes with high bandwidth and long survival time to be close to a video source, the nodes in the network can gradually learn the network status and continuously optimize the system performance. A coverage network topology constructed by the method can improve the data diffusion speed, ensures the stability and continuity of streaming distribution, and effectively reduces the flow cross operators.
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Description

technical field

[0001] The invention relates to the technical field of P2P streaming media, in particular to a method for adjusting the topology structure of an overlay network. Background technique

[0002] Combining P2P (peer-to-peer, also known as peer-to-peer) technology with streaming media applications is one of the current academic and industrial research hotspots. P2P streaming media technology consists of two parts: overlay network topology and data scheduling. Overlay network topology refers to how to find neighbor nodes, so that an application layer network is organized; Then stream media transmission. Therefore, the overlay network topology structure is the basis of data scheduling. At present, the overlay network topology in the P2P streaming media technology is mainly tree and mesh. Literature [1] analyzed and compared the two structures of mesh topology and multi-tree topology, and pointed out that the mesh topology can use the network bandwidth more effect...

Claims

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