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[ "蔡蓉,女,南通大学电子信息学院硕士生,主要研究方向为车载自组织网络。" ]
[ "章国安,男,博士,南通大学电子信息学院教授、博士生导师,主要研究方向为无线通信网络理论与技术。" ]
[ "吴月波,男,南通大学电子信息学院硕士生,主要研究方向为无线通信。" ]
网络出版日期:2015-03,
纸质出版日期:2015-03-20
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蔡蓉, 章国安, 吴月波. 车载网中基于车辆密度的可变传输范围路由协议[J]. 电信科学, 2015,31(3):98-103.
Rong Cai, Guoan Zhang, Yuebo Wu. Variable Transmission Range Routing Protocol Based on Vehicle Density in VANET[J]. Telecommunications science, 2015, 31(3): 98-103.
蔡蓉, 章国安, 吴月波. 车载网中基于车辆密度的可变传输范围路由协议[J]. 电信科学, 2015,31(3):98-103. DOI: 10.11959/j.issn.1000-0801.2015067.
Rong Cai, Guoan Zhang, Yuebo Wu. Variable Transmission Range Routing Protocol Based on Vehicle Density in VANET[J]. Telecommunications science, 2015, 31(3): 98-103. DOI: 10.11959/j.issn.1000-0801.2015067.
为了解决由于道路上车辆密度快速变化,而传输半径却保持不变所带来的不稳定的连通性和较高的误比特率,提出一种车载自组织网络中基于车辆密度的可变传输范围路由(VRR)协议,节点根据道路车辆密度调节信息最大传输距离,降低信息传输时延,确保网络的高连通性。在齐次泊松点过程模型的基础上推导出传输半径随着车辆密度的变化条件,验证其可行性,理论分析获得平均时延的数学计算式,最后仿真比较VRR协议与固定传输范围路由(FRR)协议的性能。仿真结果表明,VRR协议能够应用到实际环境中,且在高连通概率的前提下,使信息从源节点快速地传输到目的节点。
In order to solve the problem of unstable connectivity and high bit error rate
which are caused by rapid changes in the density of vehicles on the road
while the transmission radius remained unchanged
a variable transmission range routing protocols based on vehicle density in vehicular Ad-Hoc network was proposed.According to different vehicle density
node could adjust the farthest transmission distance and reduce the transmission latency of the message
which could ensure high connection probability of the network.Based on homogeneous poisson point process model
the change conditions of transmission range with different vehicle density were deduced
and its feasible was proved.Furthermore
mathematical calculate formula of average latency was obtained according to the theoretical analysis.At last
variable transmission range routing protocol based on vehicle density and fixed transmission range routing protocol were compared by simulation.The simulated results show that the proposed protocol can be applied in actual environments
and the message can be transmitted fast from source node to destination node under the condition of high connection probability.
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