Energy efficient data retrieval and caching in mobile peer-to-peer networks

被引:10
|
作者
Joseph, MS [1 ]
Kumar, M [1 ]
Shen, HP [1 ]
Das, S [1 ]
机构
[1] Univ Texas, Dept Comp Sci & Engn, Arlington, TX 76019 USA
来源
Third IEEE International Conference on Pervasive Computing and Communications, Workshops | 2005年
关键词
D O I
10.1109/PERCOMW.2005.30
中图分类号
TP301 [理论、方法];
学科分类号
081202 ;
摘要
Mobile Peer-to-Peer (MP2P) networks consist of mobile devices that communicate with each other via short-range wireless transmissions to facilitate sharing of information among them. Such networks present a constrained communication environment due to fundamental limitations of battery power and wireless bandwidth, and users' frequent mobility. These characteristics of MP2P networks make scalable data retrieval a challenging problem. In this paper we propose a novel scheme, called Proximity Regions for Caching in Cooperative MP2P Networks(PReCinCt), to efficiently support scalable data retrieval in large-scale MP2P networks. In the PReCinCt scheme, the network topology is divided into geographical regions where each region is responsible for a set of keys representing the data. Each key is then mapped to a region location based on a geographical hash function. A geographic-aided routing protocol is used to route traffic of each data retrieval. In order to further save bandwidth for each data retrieval, PReCinCt incorporates a cooperative caching scheme that caches relevant data among a set of peers in a region. Simulation results show that the proposed scheme achieves significant improvements in average latency and energy consumption.
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页码:50 / 54
页数:5
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