Abstract
Based on the location of the routing protocol because it avoids the shortcomings of flooding mechanisms and has a good scalability, become research focus in frequent changes network topology VANET .GPSR based on node location only for data forwarding, so it is important to vehicle node location information is accurate, directly affect the normal data forwarding. For GPSR algorithm the destination node location inaccuracy problem, this paper introduces the concept of expectation domain to estimate the location of the destination node movement range, and the last hop neighbor node selection of the destination node to join discriminant mechanism. The simulation experimental results show that the improved GPSR protocol has a higher packet delivery rate.
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