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：2013
卷号：4
期号：4
页码：45-52
语种：English
出版社：Ayushmaan Technologies
摘要：This paper deals with the problem of carrying data packets for highly self – motivated MANETs in a unfailing and timely approach. Most existing ad hoc routing protocols are vulnerable to node mobility, mainly for large-scale networks. Driven by this issue, we propose a proficient Position-based Opportunistic Routing (POR) protocol which takes benefit of the stateless property of geographic routing and the broadcast nature of wireless medium. When a data packet is sent out, some of the neighbor nodes that have overheard the transmission will serve as forwarding candidates, and take turn to forward the packet if it is not transmitted by the specific best forwarder within a certain period of time. By using such in-the-air backup, communication is maintained without being interrupted. The extra latency incurred by local route recovery is greatly reduced and the duplicate transmission caused by packet reroute is also decreased. In the case of communication gap, a Virtual Destination-based Void Handling (VDVH) scheme is additional proposed to work together with POR. Both theoretical analysis and simulation results show that POR achieves excellent performance even under high node mobility with suitable overhead and the new void managing scheme also works well.
关键词：Geographic Routing;Opportunistic Advancing;Unfailing Data Delivery;Void Managing;Mobile Ad-Hoc Network
