Channel access mechanism based on equally allocation of protocol sequence for VANET

Zhe-xin XU; Ling-ling CAI; Xiao LIN; Yi WU

doi:10.11959/j.issn.1000-436x.2016074

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Channel access mechanism based on equally allocation of protocol sequence for VANET

academic paper | 更新时间：2024-06-05

- Channel access mechanism based on equally allocation of protocol sequence for VANET
- Journal of Communications Vol. 37, Issue 4, Pages: 74-86(2016)
- 作者机构：
  
  福建师范大学光电与信息工程学院，福建福州350007
- 作者简介：
- 基金信息：
  
  The National Natural Science Foundation of China(61571128);The Research Fund for the Doctoral Program of Higher Education of China(20133503120003);The Natural Science Foundation of Fujian Province(2013J01224);The Key Projects of Science and Technology Plan for Industry of the Science and Technology Department of Fujian Province(2014H0019)
- DOI：10.11959/j.issn.1000-436x.2016074
  CLC： TN929.52
- Online First：2016-04，
  
  Published：25 April 2016
- 稿件说明：
移动端阅览
Zhe-xin XU, Ling-ling CAI, Xiao LIN, et al. Channel access mechanism based on equally allocation of protocol sequence for VANET[J]. Journal of Communications, 2016, 37(4): 74-86.
DOI：

Zhe-xin XU, Ling-ling CAI, Xiao LIN, et al. Channel access mechanism based on equally allocation of protocol sequence for VANET[J]. Journal of Communications, 2016, 37(4): 74-86. DOI： 10.11959/j.issn.1000-436x.2016074.

摘要

为了提高VANET 中节点的吞吐量性能，提出基于协议序列平均分配算法的信道接入机制。在高速公路场景下，规划IEEE 802.11p业务信道与竞争区段的映射，并根据用户保障序列的特性设计帧结构。通过少量反馈确定竞争区段的节点数，并提出循环轮流分配法实现平均意义上非整数个序列的分配。仿真结果证明了理论分析的有效性，在实际路况中均分法与经典方法相比吞吐量性能明显改善，并且节点越稀疏、物理层数据传输速率越高，吞吐量性能提升越明显，同时可保持较低的网络开销和较好的信道接入公平性。

Abstract

In order to improve the throughput performance in VANET

a channel access mechanism based on equally al-location (EA) of protocol sequence was proposed. For highway scenery

the proposed mechanism re-planed the mapping of traffic channel allocation of IEEE 802.11p to competition zone. In addition

the frame structure was also redesigned according to the characteristic of user irrepressible protocol sequence. A few bits of data were used to find out the number of nodes in the competition zone. Cyclic polling allocation was proposed to allocate the protocol sequences under average meaning. The theoretical throughput expression is derived and proved to be correct by simulation. It is also verified that the throughput of EA is more superior to classical met in a sparser distributed network or a higher PHY data rate. Equally importantly

EA can also keep relative low net overhead and available fairness about channel access of the nodes.

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Keywords

references

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