Performance modeling and analysis of the ADHOC MAC protocol for vehicular networks
Performance modeling and analysis of the ADHOC MAC protocol for vehicular networks
复制标题
车载网络ADHOC MAC协议的性能建模与分析
DOI：
10.1007/s11276-015-1000-6
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发表时间：
2016-04-01
影响因子：
3
通讯作者：
Zheng, Jun
中科院分区：
文献类型：
--
作者：
Wu, Qiong;Zheng, Jun
ADHOC MAC协议是一种经典的MAC协议，用于支持车辆自组网（vanet）中可靠的广播业务。本文建立了一个分析ADHOC MAC协议访问性能的分析模型。首先构造马尔可夫链来描述使用ADHOC MAC协议时在帧末成功获取时隙的车辆数量。在马尔可夫模型的基础上，导出了描述帧长与信道利用率关系的解析模型。在导出的解析模型的基础上，进一步得到了信道利用率最大的最优帧长。仿真实验验证了分析模型的有效性。
The ADHOC MAC protocol is a classical MAC protocol for supporting reliable broadcast services in vehicular ad hoc networks (VANETs). This paper develops an analytical model for analyzing the access performance of the ADHOC MAC protocol. A Markov chain is first constructed to describe the number of vehicles which have acquired a timeslot successfully at the end of a frame when using the ADHOC MAC protocol. Based on the Markov model, an analytical model is then derived to describe the relationship between the frame length and the channel utilization. Based on the derived analytical model, an optimal frame length that maximizes the channel utilization is further obtained. Simulation experiments are conducted to verify the effectiveness of the analytical model.