TITLE:
The Next-Hop Node Selection Based GPSR in Vehicular Ad Hoc Networks
AUTHORS:
Zhaoyuan Cui, Demin Li, Guanglin Zhang, Chang Guo, Yong Sheng
KEYWORDS:
VANETs, GPSR, Next-Hop Node Selection, Link Reliability, Weighted Function
JOURNAL NAME:
Journal of Computer and Communications,
Vol.4 No.10,
August
15,
2016
ABSTRACT: Vehicular Ad hoc Networks (VANETs) which is
a special form of Mobile Ad hoc Networks (MANETs) has promising application
prospects in the future. Due to the rapid changing of topology structure, how
to find a route which can guarantee Quality of Service (QoS) is an important
issue in VANETs. This paper presents an improved Greedy Perimeter Stateless
Routing (GPSR) protocol based on our proposed next-hop node selection
mechanism. Firstly, we define the link reliability in two cases which take the
movement direction angle between two vehicles into consideration. Then we
propose a next-hop node selection mechanism based on a weighted function which
consists of link reliability between the sender node and next-hop candidate
node, distance between next-hop candidate node and the destination, movement
direction angle of next-hop candidate node. At last, an improved GPSR protocol
is proposed based on the next-hop node selection mechanism. Simulation results
are presented to evaluate the performance of the improved GPSR protocol, which
shows that the performance including packet delivery ratio and average
end-to-end delay of the proposed protocol is better in some situations.