A Protocol for clustered heterogeneous for Wireless Sensor Network has been proposed to prolong the network lifetime

Inexpensive sensors capable of significant computation and wireless communications are becoming available [2,4]. A web of sensor nodes can be deployed to collect useful information from the field, for example, in harsh physical environments [13]. The

In a heterogeneous wireless sensor network (WSN), relay nodes (RNs) are adopted to relay data packets from sensor nodes (SNs) to the base station (BS). The deployment of the RNs can have a significant impact on connectivity and lifetime of a WSN sy