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Emergency data which mean something happened in sudden need to be dealt with timely, otherwise will bring very serious consequences. To ensure the low-delay routing of emergency data, a novel graded routing strategy, dynamic adaptive cooperative routing (DACR) is proposed in this paper. This scheme extends the LEACH protocol to enable the multi-hop transmissions among clusters by incorporating a cooperative...
The optimal number of cluster heads is an important parameter of wireless sensor network performance. Network nodes will consume more energy if the number of cluster heads is too much or too little. This paper focuses on novel calculation method for optimal number of cluster heads. Base on the analysis of LEACH energy dissipation model, novel calculation method is derived from the total energy dissipation...
Node density control is one of the most important measures to save energy consumption in large wireless sensor networks (WSNs), and it aims to minimize the number of on-duty nodes when maintaining the original network coverage. In this paper, CPSBC, a coverage-preserving self-scheduling protocol is proposed. CPSBC is based on a new sensing model - cooperative sensing model (CSM) other than the traditional...
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