[1]陈振,韩江洪.车载自组网中基于分布式TDMA的协作数据重发方法[J].东南大学学报(自然科学版),2017,47(4):642-648.[doi:10.3969/j.issn.1001-0505.2017.04.003]
　Chen Zhen,Han Jianghong.Cooperative retransmission based on distributed TDMA for VANET[J].Journal of Southeast University (Natural Science Edition),2017,47(4):642-648.[doi:10.3969/j.issn.1001-0505.2017.04.003]
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车载自组网中基于分布式TDMA的协作数据重发方法()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
47
期数:
2017年第4期
页码:
642-648
栏目:
计算机科学与工程
出版日期:
2017-07-20

文章信息/Info

Title:
Cooperative retransmission based on distributed TDMA for VANET
作者:
陈振1; 2; 韩江洪1
1合肥工业大学计算机与信息学院, 合肥230009; 2安徽大学计算机教学部, 合肥230601
Author(s):
Chen Zhen1; 2;  Han Jianghong1
1School of Computer and Information, Hefei University of Technology, Hefei 230009, China
2Department of Computer Teaching, Anhui University, Hefei 230601, China
关键词:
移动自组网;  车载自组网;  时分多址;  可靠性
Keywords:
mobile ad hoc networks;  vehicular ad hoc networks;  time division multiple access(TDMA);  reliability
分类号:
TP393.0
DOI:
10.3969/j.issn.1001-0505.2017.04.003
摘要:
为进一步利用车载自组网中分布式TDMA的节点空闲时隙资源,提出了一种分布式协作数据重发方法,即协作分布式TDMA(cooperative distributed TDMA,Co-DTDMA)方法.利用无线信道的广播特性与分布式TDMA的信道访问确定方式,Co-DTDMA中的信息交互过程能够以一种有序和确定的方式进行,在节点未成功发送数据时,附近的邻居节点利用自身空闲时隙进行协作数据重发,从而在不影响正常数据传输业务情形下,传输失败的数据拥有更多的发送机会.上述协作重发不依赖于中心节点,以分布式方式执行,因而适应车载自组网的应用场合.理论分析与仿真结果表明,Co-DTDMA显著提高了数据包发送成功概率,降低了数据包传输时延和丢包率,显著提高了网络可靠性.
Abstract:
To further utilize the idle time slots of the distributed TDMA(time division multiple address)for VANET(vehicular ad hoc networks), a distributed cooperative retransmission scheme, referred to as cooperative distributed TDMA(Co-DTDMA), is presented. Based on the broadcasting nature of wireless medium and the determinate way that the distributed TDMA accesses channel, nodes can interact with each other orderly and determinately in Co-DTDMA. When a node fails to transmit a packet, neighboring nodes exploit their idle slots for retransmitting the failed packet cooperatively, and thus the failed packet has more chance to be transmitted, without interrupting the normal packet transmissions. The cooperative retransmission does not rely on any central node, and is performed in a distributed manner, which makes it suitable for VANET. The numerical and simulation results demonstrate that Co-DTDMA significantly increases the probability of successful packet transmission, decreases the packet transmission delay and packet dropping rate, thus significantly increasing the network reliability.

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备注/Memo

备注/Memo:
收稿日期: 2016-12-26.
作者简介: 陈振(1980—),男,博士生;韩江洪(联系人),男,教授,博士生导师,czahu@163.com.
基金项目: 国家自然科学基金资助项目(61370088,61502142)、安徽省自然科学基金资助项目(1408085MKL80).
引用本文: 陈振,韩江洪.车载自组网中基于分布式TDMA的协作数据重发方法[J].东南大学学报(自然科学版),2017,47(4):642-648. DOI:10.3969/j.issn.1001-0505.2017.04.003.
更新日期/Last Update: 2017-07-20