WSN中一种基于多路径的分布式TCP缓存算法

Multi-path-based distributed TCP caching for wireless sensor networks

研究了现有几种重要的传感器网络传输层协议,原有基于单一路径的分布式TCP缓存算法在路径上某节点消亡后工作效率较差。在单一路径算法的基础上,利用网络层的多路径路由算法以及传输层的分布式TCP缓存算法来增强传输可靠性。仿真结果显示,算法在端到端时延方面提高了原有算法的性能,另外能够平均分配中间节点的负载而达到节省能量的目的,这样有助于延长整个网络的生存期。

The paper investigates some important transport layer algorithms for wireless sensor networks.On the basis of the single-path-based distributed TCP caching,which works badly when some node on the path be down,adopts multi-path routing on the network layer and distributed TCP caching on the transport layer to enhance transport reliability.From the simulation results,it improves overall performance in term of end-to-end transport delay comparing with the original DTC algorithm and loads are distributed among the intermediate nodes which can help save node＇s energy in order to prolong lifetime of the whole network.