期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2014
卷号：5
期号：4
页码：98-100
语种：English
出版社：Ayushmaan Technologies
摘要：In geographic routing, nodes got to maintain up-to-date positions of their immediate neighbors for creating effective forwarding selections. Periodic broadcasting of beacon packets that contain the geographic location coordinates of the nodes may be a popular technique employed by most geographic routing protocols to take care of neighbor positions. We tend to contend and demonstrate that periodic beaconing notwithstanding the node quality and traffic patterns within the network isn’t engaging from each update price and routing performance points of read. We tend to propose the adaptive Position Update (APU) strategy for geographic routing, that dynamically adjusts the frequency of position updates supported the quality dynamics of the nodes and also the forwarding patterns within the network. APU is based on 2 straightforward principles: 1) nodes whose movements are more durable to predict update their positions additional oftentimes (and vice versa), and (ii) nodes nearer to forwarding ways update their positions additional oftentimes (and vice versa). Our theoretical analysis, which is valid by NS2 simulations of a widely known geographic routing protocol, Greedy Perimeter homeless Routing Protocol (GPSR), shows that APU will considerably cut back the update price and improve the routing performance in terms of packet delivery magnitude relation and average end-to-end delay compared with periodic beaconing and alternative recently planned change schemes. The advantages of APU are any confirmed by endeavor evaluations in realistic network eventualities, that account for localization error, realistic radio propagation, and thin network.
