Improvement of GPSR Protocol in Vehicular Ad Hoc Network

被引:57
|
作者
Yang, Xiaoping [1 ]
Li, Mengjie [1 ]
Qian, Zhihong [1 ]
Di, Te [2 ]
机构
[1] Jilin Univ, Coll Commun Engn, Changchun 130012, Jilin, Peoples R China
[2] Chang Guang Satellite Technol Co Ltd, Changchun 130000, Jilin, Peoples R China
来源
IEEE ACCESS | 2018年 / 6卷
关键词
Vehicular ad hoc network; routing protocols; GPSR; greedy forwarding; perimeter forwarding; NS-2; ROUTING PROTOCOLS; MOBILE;
D O I
10.1109/ACCESS.2018.2853112
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In a vehicular ad hoc network (VANET), vehicles always move in high-speed which may cause the network topology changes frequently. This is challenging for routing protocols of VANET. Greedy Perimeter Stateless Routing (GPSR) is a representative routing protocol of VANET. However, when constructs routing path, GPSR selects the next hop node which is very easily out of the communication range in greedy forwarding, and builds the path with redundancy in perimeter forwarding. To solve the above-mentioned problems, we proposed Maxduration-Minangle GPSR (MM-GPSR) routing protocol in this paper. In greedy forwarding of MM-GPSR, by defining cumulative communication duration to represent the stability of neighbor nodes, the neighbor node with the maximum cumulative communication duration will be selected as the next hop node. In perimeter forwarding of MM-GPSR when greedy forwarding fails, the concept of minimum angle is introduced as the criterion of the optimal next hop node. By taking the position of neighbor nodes into account and calculating angles formed between neighbors and the destination node, the neighbor node with minimum angle will be selected as the next hop node. By using NS-2 and VanetMobiSim, simulations demonstrate that compared with GPSR, MM-GPSR has obvious improvements in reducing the packet loss rate, decreasing the end-to-end delay and increasing the throughput, and is more suitable for VANET.
引用
收藏
页码:39515 / 39524
页数:10
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