Directed diffusion: a scalable and robust communication paradigm for sensor networks
MobiCom '00 Proceedings of the 6th annual international conference on Mobile computing and networking
Highly-resilient, energy-efficient multipath routing in wireless sensor networks
MobiHoc '01 Proceedings of the 2nd ACM international symposium on Mobile ad hoc networking & computing
A coverage-preserving node scheduling scheme for large wireless sensor networks
WSNA '02 Proceedings of the 1st ACM international workshop on Wireless sensor networks and applications
Coverage-Preserving Routing Protocols for Randomly Distributed Wireless Sensor Networks
IEEE Transactions on Wireless Communications
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In wireless sensor network, there are many hurdles takes place in providing quality of service routing to a desired level. The majority of routing protocols in wireless sensor networks concentrates only on energy efficiency as a prime factor, and only very few approaches focus on Quality of Service (QoS). Even few protocols provides QoS routing takes traditional parameters like bandwidth, delay and jitter. This proposed protocol provides an approach in a different way such that QoS routing can be a blend of some modern metrics. A novel protocol named Coverage Preserving Routing (CPR), has been designed which provides a complete and effective coverage of the network with minimum active nodes for a expected lifetime. This coverage based routing protocol consists of three phases namely cluster head selection, node self-scheduling and optimal routing. Cluster head selection phase preserves the coverage area of the network using a coverage preserving cluster head selection algorithm. This algorithm finds the node with minimum sensitivity area in a cluster has been elected as cluster head for every round. Node self-scheduling phase takes care of off-duty eligibility nodes of a round and performs a coordinated sleeping among nodes. Optimal routing phase has been developed based on multi path routing algorithm and it finds multiple shortest paths and performs each round of routing depends upon the energy levels of the nodes. Simulation results shows that the protocol provides a better coverage of the network. The lifetime is assured due to coordinative sleeping and multi path routing to some extent.