【摘要】 无线传感器网络的首要设计目标即延长网络生命期,而网络拓扑作为路由层协议和MAC层协议的重要平台,对其进行控制是实现这一目标的支撑基础。本文总结和分析了传感器网络领域已有的拓扑控制方面的研究成果,阐述了多种受研究者关注较多的典型拓扑控制算法,并指出其中有待解决的问题,进而归结了拓扑控制算法设计中需考虑的因素,随后针对功率控制和分簇控制分别设计了两种算法模型,最后探讨了今后应研究的问题,指明了下一步研究中的重点和难点。更多还原

【Abstract】 The main objective of wireless sensor network design is to fulfill the task of prolonging network lifetime. The network topology,which is the important foundation of routing layer protocols and MAC layer protocols,serves as the supportive groundwork for achieving this goal. This paper summarizes and concludes the existing research of topology control in wireless sensor networks. Some algorithms attracting many researchers are introduced in this paper and their defects are pointed out. The key factors in the designing of topology control algorithm then are proposed. Aiming to power control and clustering control two algorithm models are designed respectively. At last the problem in future research is discussed,furthermore,the keystone and difficulty of research in wireless sensor networks are indicated.更多还原