关键词: 无线传感器网络, 链路干扰, 拓扑控制

Abstract: In wireless sensor networks, topology control is an important way of reducing the energy consumption（prolonging the system lifetime） and providing effective support to upper-layer communication protocols, such as MAC and routing protocols. For most of wireless sensor network applications, wireless sensor nodes often share a specified channel due to the constraints of the spectrum and costs. Consequently, such co-channel wireless sensor networks often experience link interferences caused by concurrent transmissions of close-by links. Link interferences significantly deteriorate the efficacy of packet delivery and waste the precious resources of the energy and bandwidth of nodes. Therefore, reducing link interferences in wireless sensor networks is a critical task of designing topology controls and then often serves as the optimization object in topology control algorithms. This paper gives a comprehensive survey on the research progress of link-interference-aware topology control for wireless sensor networks. Firstly, the link interference models are presented with insightful analysis. Secondly, the algorithms based on each model and their complexities are described. Finally, the defects of existing works and several important open problems are clearly pointed out.

Key words: wireless sensor networks, link interference, topology control