A Multi-hop Wireless Sensor Networks Clustering Routing Protocol

Wireless Sensor Network is a new research area of wireless networks has a wide application future.The main research direction of this paper is design of routing protocol in WSN. Compare to traditional wireless networks such as Ad hoc networks, the number of sensor node in WSN are numerous and single node is extraordinarily limited in energy, communication and computation capability. So the first priority task for routing protocol design in WSN is to increase the energy efficiency of sensor node and prolong lifetime of whole network. Based on the research of existing routing protocol, we propose A multi-hop Routing Protocol Based on Clustering. This protocol is aimed to improve the energy efficiency of sensor node and the scalability of network. It based on query and suited for large-scale Network.RPBC is a hierarchical routing protocol. In LEACH protocol, nodes come into cluster but network is not hierarchical. In order to improve this disadvantage, RPBC divide network into two layers. In the upper layer, nodes form the patch to reach the Sink. This will expand the scale of the network. RPBC is based on query. According to different demand, Sink node can set the monitoring duration of query message to change the query mode between continues queries and temporary queries. After algorithm start, each node form into different cluster. Sink node query interesting message between cluster head(CH). The patch formation of the CH to Sink is established in this time. Common nodes into sleep state in order to saving energy when a query does not match the cluster, whereas common nodes in normal working condition.Finally, LEACH and RPBC is simulated in NS2. Simulation results show that LEACH is not suitable for large-scale WSN. Through a series of improvements to the LEACH, RPBC expands the scale of the network effectively and increase the network lifetime. Simulation show that RPBC works well in wireless sensor networks and achieves its design goal.