Communication Reliability Support with the Minimum Number of Totally Transmitted Packets in Wireless Sensor Networks

Sungkee NOH  Euisin LEE  Soochang PARK  Seungmin OH  Sang-Ha KIM  

IEICE TRANSACTIONS on Communications   Vol.E95-B   No.7   pp.2455-2458
Publication Date: 2012/07/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E95.B.2455
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
wireless sensor networks,  communication reliability,  geometric programming,  optimization,  

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Recently, a flexible loss recovery scheme, called Active Caching (AC) has been proposed to accomplish a Desired Communication Reliability (DCR) about the whole data packets at a source depending on the various applications. However, since AC does not consider the packet delivery rate of each wireless link on multi-hop forwarding paths, it increases the number of totally transmitted packets to achieve a DCR and thus grows the energy consumption of sensor nodes. Thus, this letter proposes a novel recovery scheme which can minimize the number of totally transmitted packets while satisfying a DCR. By geometric programming, the proposed scheme allocates an optimized one-hop packet transmission rate of each wireless link on the multi-hop forwarding path.