A message ferrying approach for data delivery in sparse mobile ad hoc networks-英文文献.pdf

A Message Ferrying Approach for Data Delivery in Sparse Mobile Ad Hoc Networks ∗ Wenrui Zhao, Mostafa Ammar and Ellen Zegura College of Computing, Georgia Institute of Technology, Atlanta, Georgia 30332 {wrzhao, ammar, ewz}@ ABSTRACT 1. INTRODUCTION Mobile Ad Hoc Networks (MANETs) provide rapidly deployable Mobile Ad Hoc Networks (MANETs) are multi-hop networks in and self-configuring network capacity required in many critical ap- which wireless mobile nodes cooperate to maintain network con- plications, e.g., battlefields, disaster relief and wide area sensing. In nectivity and perform routing functions [17, 25]. MANETs enable this paper we study the problem of efficient data delivery in sparse nodes to communicate with each other without any existing infras- MANETs where network partitions can last for a significant period. tructure or centralized administration. These rapidly deployable Previous approaches rely on the use of either long range commu- and self-configuring networks have applications in many critical nication which leads to rapid draining of nodes’ limited batteries, areas, such as battlefields, disaster relief and wide area sensing and or existing node mobility which results in low data delivery rates surveillance. and large delays. In this paper, we describe a Message Ferrying This paper studies the problem of efficient data delivery in sparse (MF) approach to address the problem. MF is a mobility-assisted mobile ad hoc networks. Specifically, we focus on mobile networks approach which utilizes a set of special mobile nodes called mes-