6LoWPAN的Enhanced Route-over的分片和重组机制

Fragment and Reassembly of Enhanced Route-over in 6LoWPAN

针对Route-over路由在6Lo WPAN中存在需要在每一跳节点进行分片和重组的问题,提出了一种Enhanced Route-over机制,该机制通过在Route-over转发过程中增加映射表和构建虚拟IP帧,改善了Route-over路由在数据报端到端传输时延方面的性能,并采用Cooja仿真器和无线传感器网络硬件平台进行了验证。仿真结果显示,在保证节点能量消耗不增加的情况下,当节点数量分别为4、10和18时,所提出的优化算法的数据报端到端传输时延方面分别减少了14.23%、20.89%和21.68%。此外,还适用于实际场景。

In order to solve the problem of hop-by-hop fragment and reassembly of Route-over in 6LoWPAN,an enhanced Routeover mechanism is put forward.By adding a mapping table and establishing a virtual frame during Route-over forwarding,the enhanced Route-over mechanism improves significantly reduces the end-to-end delay time.The algorithm is verified by using Cooja simulator and wireless sensor network hardware platform.The results show that when the number of nodes is 4,10 and 18,the data transmission delay of the proposed optimization algorithm is decreased by 14.23% ,20.89% and 21.68%, and the node energy consumption is not increased. Besides, it is suitable for the actual scene.