Design and performance evaluation of overhearing-aided data caching in wireless Ad Hoc networks

Weigang Wu, Jiannong Cao, Xiaopeng Fan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

27 Citations (Scopus)

Abstract

Wireless ad hoc network is a promising networking technology to provide users with Internet access anywhere anytime. To cope with resource constraints of wireless ad hoc networks, data caching is widely used to efficiently reduce data access cost. In this paper, we propose an efficient data caching algorithm which makes use of the overhearing property of wireless communication to improve caching performance. Due to the broadcast nature of wireless links, a packet can be overheard by a node within the transmission range of the transmitter, even if the node is not the intended target. Our proposed algorithm explores the overheard information, including data request and data reply, to optimize cache placement and cache discovery. To the best of our knowledge, this is the first work that considers the overhearing property of wireless communications in data caching. The simulation results show that, compared with one representative algorithm and a naive overhearing algorithm, our proposed algorithm can significantly reduce both message cost and access delay.
Original languageEnglish
Article number6203499
Pages (from-to)450-463
Number of pages14
JournalIEEE Transactions on Parallel and Distributed Systems
Volume24
Issue number3
DOIs
Publication statusPublished - 4 Feb 2013

Keywords

  • cooperative caching
  • Index Terms-Ad hoc network
  • mobile computing
  • wireless communication

ASJC Scopus subject areas

  • Signal Processing
  • Hardware and Architecture
  • Computational Theory and Mathematics

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