一种多接口认知传感器网络体系结构

传统的单接口无线传感器网络由于同道干扰问题的存在，网络性能受到极大的限制。多接口无线网络技术是解决这一问题的有效方案。但是多接口无线传感器网络的频谱接入问题是多接口传感网大规模部署的关键一环。而认知无线电技术能够实现频谱的动态访问，即便是信道拥塞的情况仍能有效改善网络性能，并且在无线传感器网络中表现出较好的传输特性。本文提出一种基于连通支配集的多接口认知传感器网络体系结构。通过分析不难看出，提出的体系结构具有良好的扩展性和容错性能。

A New Network Architecture for Multi-radio Cognitive Wireless Sensor Network

The performance of traditional wireless sensor network is limited with co-channel interference. With recent advances in multi-radio wireless technology, it is possible to apply the multi-channel in wireless sensor network to get better throughput. But Dynamic Spectrum Access is an important link for massive deployment of multi-radio wireless sensor network. Cognitive radio is the essential technique basis of Dynamic Spectrum Access. With the introduction of cognitive radio, wireless sensor network can get better transportation characteristics even in congested spectrum. This paper presents a novel architecture for multi-radio cognitive wireless sensor network which consists of connected dominating set. Analysis shows that proposed network architecture provides easy extensibility and fault-tolerance ability.