D2D网络中基于立即可解网络编码的时延最小化重传方案

王练; 王萌; 任治豪; 白佳洁

doi:10.11999/JEIT170976

D2D网络中基于立即可解网络编码的时延最小化重传方案

doi: 10.11999/JEIT170976

(重庆邮电大学计算机科学与技术学院重庆 400065)

基金项目:

重庆市教委科学技术研究(KJ1704103)

详细信息

作者简介:
王练：王练：女，1976年生，博士，副教授，研究方向为网络编码、无线网络安全. 王萌：女，1991年生，硕士生，研究方向为网络编码. 任治豪：男，1992年生，硕士生，研究方向为网络编码. 白佳洁：女，1992年生，硕士生，研究方向为网络编码.

中图分类号: TP393
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- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2017-10-20
- 修回日期: 2018-01-24
- 刊出日期: 2018-07-19

Delay Minimization Retransmission Scheme Based on Instantly Decodable Network Coding for D2D Communications

WANG Lian WANG Meng REN Zhihao BAI Jiajie

Funds:

The Research on Science and Technology of Chongqing Education Commission (KJ1704103)

摘要

摘要: 该文针对D2D无线网络中多终端并发协作重传冲突避免问题，提出一种基于立即可解网络编码的时延最小化重传方案。在重传阶段，充分利用D2D无线网络终端协作传输数据的优势，结合各终端数据包接收状态，综合考虑时延的影响因素，选取单次重传时延增量较小的数据包生成编码包，最小化重传时延。同时，构建终端冲突图，在图中搜索极大独立集，根据各终端的编码包权重值，选择最大加权独立集中的终端作为并发协作重传终端，从而降低重传次数。仿真结果表明，所提方案能够进一步改善D2D无线网络的重传效率。
- 网络编码 /
- 重传 /
- 时延 /
- 终端直通
Abstract: A delay minimization retransmission scheme based on an instantly decodable network coding is proposed to solve the conflict problem when multiple devices cooperatively retransmit in Device-to-Device (D2D) wireless networks concurrently. In retransmission stage, making full use of multiple devices cooperative transmission advantages in D2D wireless network, combined with the packet receiving state of each devices, taking all of the influence factors of delay into account, and then the packets with smaller incremental delay for each retransmission are selected to generate encoding packets to minimize the retransmission delay. At the same time, the devices conflict graph is constructed and the maximal independent set is searched in the graph. According to the encoding package weight value of each device, the maximum weighted independent set are selected as the concurrent cooperative retransmission devices to reduce the number of retransmission. Simulation results show that the proposed scheme can further improve the retransmission efficiency of D2D wireless network.
- Network coding、Retransmission、Delay、Device-to-Device (D2D) /

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参考文献(17)

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