文章基本信息

标题：Efficient Implementation of Data Aggregation in WSNs by Mobile Agent Paradigm
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作者：N.Sandhya rani ; O. Srinivasa Rao ; Dr MHM Krishna Prasad 等
期刊名称：International Journal on Computer Science and Engineering
印刷版ISSN：2229-5631
电子版ISSN：0975-3397
出版年度：2011
卷号：3
期号：9
页码：3254-3258
出版社：Engg Journals Publications
摘要：In many sensor network applications viz., environmental monitoring, spatial exploration and battlefield surveillance, sensed data is aggregated and transmitted to the sinks for analysis. Thus, innetwork data aggregation [2] becomes an important technique in wireless sensor networks and has been well studied in recent years. In general, any sensory network suffers with two problems i.e., i) the time latencies of the existing scheduling algorithms are still high, and ii) the other one is that all the existing algorithms are centralized, which are inherently inefficient. Hence, in this paper, we present a distributed scheduling algorithm generating collision-free schedules with latency bound, based on TBID, which employs multiple Mobile Agents (MAs) for completing the aggregation task on WSNs. The algorithm not only determines the proper number of MAs for minimizing the total aggregation cost but also constructs low-cost itineraries for each of them. In this paper, we adopt TBID that improves upon NOID by following a more direct approach to the problem of determining low-cost MA itineraries. Specifically, based on an accurate formula for the total energy expended during MA migration, we follow a greedylike approach for distributing SNs in multiple MA itineraries, and algorithm determines a spanning forest of trees in the network, calculates efficient tree traversal orders (itineraries), and eventually, assigns these itineraries to individual MAs.)
关键词：component; wireless sensor networks; data aggregation; mobile agents