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A Reliable Transmission and Buffer Management Techniques of Event-driven Data in Wireless Sensor Networks  

Kim, Dae-Young (경희대학교 컴퓨터공학과 모바일 및 임베디드 시스템 연구실)
Cho, Jin-Sung (경희대학교 컴퓨터공학과 모바일 및 임베디드 시스템 연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.35, no.6B, 2010 , pp. 867-874 More about this Journal
Abstract
Since high packet losses occur in multi-hop transmission of wireless sensor networks, reliable data transmission is required. Especially, in case of event-driven data, a loss recovery mechanism should be provided for lost packets. Because retransmission for lost packets is requested to a node that caches the packets, the caching node should maintains all of data for transmission in its buffer. However, nodes of wireless sensor networks have limited resources. Thus, both a loss recovery mechanism and a buffer management technique are provided for reliable data transmission in wireless sensor networks. In this paper, we propose a buffer management technique at a caching position determined by a loss recovery mechanism. The caching position of data is determined according to desirable reliability for the data. In addition, we validate the performance of the proposed method through computer simulations.
Keywords
Wireless Sensor Networks; Reliable Transmission; Loss Recovery; Buffer Management;
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