Topology control for wireless sensor networks

Topology control is one of the fundamental problems in wireless sensor networks.It is of great importance for prolonging network lifetime,reducing radio interference,increasing the efficiency of MAC and routing protocols,ensure the qua-lity of connecting and coverage,increasing the network services and so on.This paper described the topology control problem and its methods,criterion of estimation firstly,then made an introduction of representative research efforts,from two aspects,homogeneous and non-homogeneous networks respectively,and pointed out the defects of those efforts.Finally,summarized existing problems,open issues and research trends.