Continuous data collection capacity of dual-radio multichannel wireless sensor networks

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Detail(s)

Original languageEnglish
Article number6095527
Pages (from-to)1844-1855
Journal / PublicationIEEE Transactions on Parallel and Distributed Systems
Volume23
Issue number10
Publication statusPublished - 2012

Abstract

The performance of data collection in Wireless Sensor Networks (WSNs) can be measured by network capacity. However, few existing works dedicatedly consider the Continuous Data Collection (CDC) capacity for WSNs under the protocol interference model. In this paper, we propose a multipath scheduling algorithm for SDC in single-radio multichannel WSNs and derive its network capacity which is a tighter lower bound compared with the previously best result [CHECK END OF SENTENCE]. We also propose a novel CDC method for dual-radio multichannel WSNs. It significantly speeds up the data collection process, and achieves a capacity of nW/12M⌈3.63ρ 2+c 3ρ +c 4/H⌉ when Δ≤ 12 or nW/MΔ e⌈(3. 63ρ 2+c 3ρ +c4)-H⌉ when Δ e >12, where n is the number of the sensors, M is a constant value and usually M \ll n, \Delta-e is the maximum number of the leaf nodes having a same parent in the data collection tree, W is the channel bandwidth, H is the number of available orthogonal channels, ρ is the ratio of the interference radius over the transmission radius, c 3 = 8π\√3 + π+ 2, and c 4 = 8π√3 + 2π + 6. Extensive simulation results indicate that the proposed algorithms improve network capacity significantly compared with existing works. © 2012 IEEE.

Research Area(s)

  • capacity analysis, continuous data collection, snapshot data collection, Wireless sensor networks