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论文类型：期刊论文

发表时间：2013-11-01

发表刊物：WIRELESS NETWORKS

收录刊物：SCIE、EI、Scopus

卷号：19

期号：8

页面范围：1851-1866

ISSN号：1022-0038

关键字：Wireless sensor networks; Passive clustering; Multipath routing; Many to one; Energy efficiency; Quality of service

摘要：Energy efficiency and quality of service (QoS) are both essential issues in the applications of wireless sensor networks (WSNs) all along, which are mainly reflected in the development of routing and MAC protocols. However, there is little design for achieving the dual performances simultaneously. In this paper, we develop a practical passive cluster-based node-disjoint many to one multipath routing protocol to satisfy the requirements of energy efficiency and QoS in practical WSNs. Passive clustering approach is put to use in the first round, while active clustering technique is taken in the other rounds. Implementation of smart delay strategy makes the cluster distribute uniformly, as well as lessen the number of nodes that have taken part in routing. Among cluster heads, a node-disjoint many to one multipath routing discovery algorithm, which is composed of the optimal path searching process and multipath expansion process, is implemented to find multiple paths at the minimum cost. The simulation results show the proposed protocol achieved very good performance both in energy efficiency and QoS.