P2P streaming media node selection method based on greedy algorithm

A greedy algorithm and node selection technology, applied in electrical components, transmission systems, etc., can solve the problems of large maintenance and insignificant advantages, and achieve the effect of good experience, overall performance improvement, and high efficiency.

Inactive Publication Date: 2019-07-05
YANGZHOU UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

It is suitable for large-scale environments with low node performance, but the advantage is not obvious when the node performance is good
[0006] (3) Depending on the propagation delay, upload capability and buffer level, the server maintains the neighbor node relationship, so the algorithm maintenance cost is relatively large

Method used

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  • P2P streaming media node selection method based on greedy algorithm
  • P2P streaming media node selection method based on greedy algorithm
  • P2P streaming media node selection method based on greedy algorithm

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Embodiment

[0052] The focus of the present invention is to combine the greedy algorithm to select the node with stronger service ability. In order to verify the performance of the algorithm proposed by the present invention, the node selection method (GA-PSA) based on the greedy algorithm proposed by the present invention and based on intuitionistic fuzzy sets are specially combined. Compared with the node selection method (IFS), the experimental process is as follows figure 2 . The specific simulation conditions are as follows: the bandwidth between the request node and the service node is the average value of the bandwidth of the request node and the service node, and the power spectral density between the request node and the service node is N=10 -7 , the average power is pm=10dbm, the number of requesting nodes is M=50, and the number of serving nodes is N=500. The sum of the number of code statement executions can be understood as the time required for the method to calculate the ...

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Abstract

The invention discloses a P2P streaming media node selection method based on a greedy algorithm, and belongs to the technical field of P2P streaming media. According to the method, overall optimization is mainly converted into a plurality of local optimization problems; the service node is quickly selected, the uplink bandwidth, the downlink bandwidth, the node online duration, the node distance and the node service capability of the node are comprehensively considered, and the service node with the maximum capability is selected, so that the transmission delay is reduced, the throughput of the service node is improved, and the overall performance of the system is effectively improved.

Description

technical field [0001] The invention provides a P2P streaming media node selection method based on a greedy algorithm, and belongs to the technical field of P2P streaming media. Background technique [0002] With the expansion of network coverage and the popularization of broadband services, applications such as online video, audio, remote classroom, and video conferencing based on network streaming media, such as pps and pptv, have achieved rapid development. Streaming media network applications have become an important business in the Internet. Therefore, the traffic generated by users puts a huge pressure on the network. The traditional C / S mode will bring too heavy load to the server, resulting in that QoS cannot be guaranteed. The p2p (peer-to-peer) streaming media on-demand technology has the advantages of load balance and scalability, and can still guarantee high transmission performance and service quality in the case of expanding user scale. In a P2P network, mul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L29/06
CPCH04L67/1061H04L67/1042H04L67/1008H04L67/1023H04L65/60H04L67/568
Inventor 桂易琪鞠爽爽
Owner YANGZHOU UNIV
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