基于数据聚合的无线传感器网络多径路由算法研究

由于传感器网络具有严格的资源限制、低速数据传输率及多对一的通信模式等独特的特征，传统用于无线移动自主网Ad—hoc的路由协议通常不能直接应用于该类网络；尤其是针对节点数目庞大的传感网，要处理的传感数据量大，在设计路由算法时必须保证其能效较高、能耗及负载均衡，以最大限度地延长整个网络的生命周期。结合数据中心及多路径路由特征，提出了一种基于数据聚合的多径路由算法。新算法不仅能在路由过程中实现能耗及负载均衡，而且能有效地消除数据冗余。理论分析和实验表明。该算法在节省能耗等方面具有一定的优势。

Data Aggregation-based Multi-path Routing Algorithm in Wireless Sensor Networks

Wireless sensor networks are uniquely characterized by extreme limited resources, dramatically low data rate, and many-to-one flow pattern. Consequently, traditional routing schemes proposed for mobile Ad-hoc networks often cannot be directly applied therein. In particular, routing schemes in large-scale wireless sensor networks are demanded to be ultra energy efficient and balanced in order to prolong the overall network life due to the potentially immense amount of sensor data. Data-centric technologies and load balancing scheme are both needed to achieve the goal of extending the network lifetime. A novel data-centric integrated routing algorithm is proposed that uniquely combines data-centric and multi-path routing, taking advantage of both data aggregation and routing angle. Not only can this scheme achieve load balancing among multiple sensor nodes, but also can it effectively eliminate data redundancy. Theoretically and experimentally, it is show that the proposed scheme can achieve significant oerformance gains over existing algorithms across a wide range of operational scenarios.