애드 혹 네트워크에서 이동성 관리를 위한 적응적 랜덤 데이터베이스 그룹 방안의 설계 및 평가

Abstract

Mobile ad hoc networks (MANETs) are networks of mobile nodes that have no fixed network infrastructure. Since the mobile node’s location changes frequently, it is an attractive area to maintain the node’s location efficiently. In this paper, we present an adaptive randomized database group (ARDG) scheme to manage the mobile nodes’ mobility in MANETs. The proposed scheme stores the network nodes’ location in location databases to manage the nodes’ mobility. When a mobile node changes its location or needs a node’s location, the node randomly select some databases to update or query the location information. The number of the selected databases is fixed in the case of querying while the number of the databases is determined according to the node’s popularity in the case of updating. We evaluated the performance of the proposed scheme using an analytical model, and compared the performance with that of the conventional randomized database group (RDG) scheme.