Efficient Reliable Opportunistic Network Coding Based on Hybrid Flow in Wireless Network
Although the wireless network is widely used in many fields, its characteristics such as high bit error rate and broadcast links may block its development. Network coding is an artistic way to exploit its intrinsic characteristics to increase the network reliability. Some people research network coding schemes for inter-flow or intra-flow, each type with its own advantages and disadvantages. In this paper, we propose a new mechanism, called MM-NCOPE, which integrates the idea of inter-flow and intra-flow coding. On the one hand, MM-NCOPE utilizes random liner coding to encode the NCOPE packets while NCOPE is a sub-protocol for optimizing the COPE algorithm by iteration. In NCOPE, packets are automatically matched by size to be coded. As a result, it improves the coding gain in some level. On the other hand, we adopt the partial Acknowledgement retransmission scheme to achieve high compactness and robust-ness. ACK is an independent packet with the highest priority rather than a part of the data pack-ets. Compared with existing works on opportunistic network coding, our approach ensures the reliabili-ty of wireless links and improves the coding gain.
network coding reliability hybrid flow
Chen Jing Li Tong Du Ruiying Fu Jianming Liu Jianwei
School of Computer, Wuhan University, Wuhan 430072, Hubei Province, P. R. China School of Computer,Wuhan University, Wuhan 430072, Hubei Province, P. R. China School of Computer,Wuhan University, Wuhan 430072,Hubei Province, P. R. China School of Electronic and Information Engineering, Beihang University, Beijing 100191, P. R. China
国际会议
2011年中国计算机学会服务计算学术会议(CCF NCSC2011)
济南
英文
125-131
2011-08-18（万方平台首次上网日期，不代表论文的发表时间）