Abstract: Considering the recent achievements of QoS support mechanism, the characteristics of wireless sensor network, and the actual demands of Qinghai-Tibet permafrost temperature detection, the paper puts forward that key points and requirements of the QoS support mechanism for Qinghai-Tibet permafrost temperature detection are efficient use of energy , reliable data transmission, and effective extension of network life cycle. Base on that, it analyzes the energy optimization strategy of QoS guarantee mechanism for the Qinghai-Tibet permafrost ground temperature monitoring wireless sensor network. A non-uniform sub-cluster routing algorithm is presented as well. Lastly, with simulation and pilot application in the Qinghai-Tibet permafrost automatic monitoring, it demonstrates that the routing algorithm can effectively improve the network life cycle and data transmission reliability. This study provides theoretical support and a model reference for establishing related wireless sensor network application systems.

Key words: wireless sensor network, quality of service, guarantee mechanism

摘要： 结合传统数据通信网络的QoS保障机制研究成果及无线传感器网络自身特点，针对青藏冻土地温自动监测的应用特点，提出能量的高效利用、数据的可靠传输和网络生存周期的有效延长是其QoS保障的主要需求和关键点。并以此关键点为目标，研究了青藏冻土地温监测的无线传感器网络QoS保障机制的能量优化策略，提出了非均匀分簇路由算法并进行了深入分析。最后，通过仿真验证及在青藏冻土地温自动监测的试点应用，验证非均匀分簇路由算法能有效提高网络的生命周期和数据传输可靠性。研究成果将为建立无线传感器网络相关应用系统提供理论支撑和模型参考。

关键词: 无线传感网络, 服务质量, 保障机制