모바일 에드혹 네트워크에서 전력효율과 신뢰성 있는 전송을 제공하는 라우팅 프로토콜

Abstract

Many routing protocols have been proposed to provide efficient communication for mobile ad-hoc networks. According to their characteristics the routing protocols can be categorized into two types: proactive and on demand. Proactive route discovery is executed before communication while on demand route discovery is executed upon their needs. On demand protocol is attractive for low routing overhead. However, mobile ad-hoc networks have some constraints which are power shortage and unstable wireless environment. In this paper, we propose a new routing protocol called PERRA(Power Efficient Reliable Routing protocol for mobile Ad-hoc networks) that have on demand protocol advantage and the property of power efficiency and reliable packet transmission. PERRA uses a new routing cost metric which is a function of routing paths composing of nodes enough to supply battery power before transmitting data packets and supports multi-hop delivery advantage,mobility prediction. Our proposed method improves power efficiency and reduce route reconstructions due to the residual power shortage and node mobility. In addition, in view of route-maintenance mechanism, reliable data transmission is possible by using an alternative route throughout error detection and prediction. The performance of PERRA is evaluated by simulations for various conditions.