Fair Routing for Overlapped Cooperative Heterogeneous Wireless Sensor Networks In such a situation, cooperative packet forwarding is expected to extend their lifetime. Although some researchers have studied cooperation in multiple WSNs, most of them do not consider the heterogeneity in the characteristics of each WSN such as battery capacity, operation start time, number of nodes, node locations, energy consumption, packet size and/or data transmission timing, and so on.

 

Naive lifetime improvement with cooperation may not be fair in a heterogeneous environment. We propose a fair cooperative routing method for heterogeneous overlapped WSNs in this paper. It introduces an energy pool to maintain the total amount of energy consumption through cooperative forwarding. The energy pool plays a broker role for fair cooperation. Finally, the results of the simulation show the excellent performance of the proposed method.

 

Wireless sensor networks (WSNs) have received a lot of attention as a means of collecting and using data from the real world. The number of WSN applications has increased widely and the range of applications has increased. 

 

Additionally, as WSNs are widely diffused, multiple overlapping WSNs built on the same area are becoming more common. Cooperation between the WSNs in such a situation to prolong the lifetime of the network. Assuming each sink of WSNs has a different location, the heavily loaded area is also different.