Journal on Communications ›› 2013, Vol. 34 ›› Issue (4): 36-46.doi: 10.3969/j.issn.1000-436x.2013.04.005

• Academic paper • Previous Articles     Next Articles

Opportunistic network coding based on prediction

Wai-xi LIU1,2,Shun-zheng YU2,Ying GAO1,Xiao HU1   

  1. 1 Department of Electronic and Information Engineerin uangzhou University,Guangzhou 510006,China
    2 Department of Electronic and Communication Engineering,Sun Yat-Sen University,Guangzhou 510006,China
  • Online:2013-04-25 Published:2017-07-17
  • Supported by:
    NSFC-Guangdong Joint Funds;The National Natural Science Foundation of China;The National Natural Science Foundation of China;The Natural Science Foundation of Guangdong Province;The Natural Science Foundation of Guangdong Province

Abstract:

Since pure theory network coding had some drawbacks in practical network,however current opportunistic network coding fully depends on overheard information.Thus,in a radically different way from network coding optimization,a novel opportunistic network coding scheme was proposed which was based on prediction (ONCP).The main idea of ONCP was firstly,arrival time of next packet in a node was predicted for the self-similarity of network traffic;:secondly,encoding time,waiting time for coding,transmission time and other factors were taken into account together to determine whether this packet was coded in this node.A theorem—maximum waiting time for was proved network coding in order to obtain throughput gain.Simulation results show that ONCP improves throughput by 15% compared to pure theory network coding and by 21% compared to traditional store-forward.ONCP can also effectively reduce energy consumption while improving throughput.

Key words: opportunistic network coding, prediction, throughput, maximum waiting time, EMD

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