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A wireless sensor network (WSN) consists of a large number of distributed sensors nodes, each of which is capable of performing computational operations, storage and communication capability. Extending network lifetime and energy efficiency are important objectives and challenges in wireless sensor networks. The nodes near the sink are more likely to use up their energy because they have to forward...
In sensor networks communication by broadcast method involves many hazards, especially collision. Several MAC layer protocols have been proposed to resolve the problem of collision namely ARBP, where the best achieved success rate is 90%. We hereby propose a MAC protocol which achieves a greater success rate (Success rate is defined as the percentage of delivered packets at the source reaching the...
In this paper, we propose IAMAC, an interference avoidance MAC protocol to avoid inter-node interference in dense wireless sensor networks. IAMAC interacts with routing protocol via cross-layer information sharing between the MAC and network layer. By providing information from network layer, we enable the MAC protocol to make proper decisions which result in fewer inter-node interference and lower...
This paper presents a location based store-and-forward packet routing algorithm for wireless body area networks (WBAN) with frequent postural partitioning. A prototype WBAN has been constructed for experimentally characterizing on-body topology disconnections in the presence of ultra short range radio links, unpredictable RF attenuation, and human postural mobility. A location based packet routing...
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