Aiming at‘hot spot’problem in wireless sensor networks（ WSNs）

caused by multi-hop communication

an improved uneven clustering routing algorithm based on weight and cost functions（ WCF-UC） is proposed. The cluster head is selected according to weight

and constructs multiple clusters with size according to the distance information. This algorithm

through considering factors such as node residual energy and node density to guarantee the optimal choice of cluster head

link structure is used to replace point to point communication in clusters

hence energy consumption in cluster is effectively balanced. Meanwhile adopt multi-hop routing algorithm

uses a cost function

considering residual energy of cluster head

cluster node number

and position information to determine the optimal energy path in order to complete information transmission and balance communication energy consumption among clusters. Simulation results show that compared with LEACH

HEED and EEUC

WCF-UC algorithm has better performance of balancing node energy consumption and prolong network life cycle.