无线传感网与因特网融合技术

Integrating Technology for Wireless Sensor Network and Internet

"泛在协同"是无线传感网发展过程的一个重要理念,因此无线传感网与因特网的融合技术成为亟需解决的热点问题。文章从设计理念、约束条件和运用模式3个方面分析了融合技术所面临的挑战,指明了技术难点与关键点;围绕网关接入策略、覆盖技术和无线网状网体系等不同风格的体制,对技术产生背景、主要特点和技术差别进行了介绍和点评。以美国国家自然科学基金会(NSF)组织开展的GENI计划为背景,文章介绍了新体系下的传感网实验平台建设情况,以及GENI技术发展的新构想。根据接入(融合)技术的特点,提出了性能评价的6项准则,并对不同技术体制的优缺点进行了比较。文章还对传感网与互联网融合技术的未来发展方向进行了讨论。

Since ＂ pervasive coordination＂ is one of the most important goals in sensor network evolution, integrating technology of wireless sensor network and traditional tnternet is becoming the key problem that needs solving. In this paper, challenges of integrating technology are composed of three parts： Design principle, system constraint and application mode. We keep these three parts as the keynote of Integration. Status quo of integrating technology is introduced, such technologies as gateway-based approach, overlay approach and wireless mesh sensor network are all presented in detail with back groundings and main characteristics. We have made a comparison of different integrating technology based on above introduction, merits and shortcomings of different mechanisms are all analyzed in detail. Back grounding on GENI project of U.S.A National Science Fund, we make an introduction to wireless sensor network test-bed deployment in GENI and its new technology evolution trend. After that, according to technological characteristics of Integration （Synergy）, we proposed six metrics to measure efficiency of different integration technology, and make comparison among different technologies based on these metrics. At the end of this paper, the future evolution of integrating technology is discussed.