Multi-stage retransmission scheme based on opportunistic network coding

被引：0
作者：
Wang L. [1 ,2 ]
Chen Q. [1 ]
机构：
[1] School of Computer Science and Technology, Chongqing University of Posts and Telecommunications, Chongqing
[2] School of Information Science and Technology, Southwest Jiaotong University, Chengdu
来源：
| 1600年 / Chinese Institute of Electronics卷 / 39期
关键词：
Opportunistic network coding; Retransmission; Wireless network;
D O I：
10.3969/j.issn.1001-506X.2017.06.28
中图分类号：
学科分类号：
摘要：
To improve the efficiency of the retransmission scheme based on network coding in wireless network, a multi-stage retransmission scheme (MSRS) based on opportunistic network coding is proposed. According to the characteristics of different lost packet distribution, the packets recovery process is divided into two stages in MSRS. First, the packet with complete decoding character (CDC-packet) can be recovered with strictly instant decodable network coding (SIDNC). Second, the packet with the incomplete decoding character (IDC-packet) can be recovered with the assistance of cache-based network coding. MSRS makes full use of the encoding opportunity of CDC-packets, fully discovers the potential encoding opportunity of IDC-packets, improving the efficiency of the encoding opportunity of IDC-packets. The simulation results show that MSRS can effectively decrease the number of retransmission, and has better stability compared with existing retransmission methods based on network coding. © 2017, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：1374 / 1382
页数：8
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