一种改进的基于地理位置的无线Mesh网络路由协议

提出了一种基于地理位置的干扰感知路由协议IAPR(Interference Aware Progress Routing),该算法通过感知无线信道的干扰特征对贪婪转发和空洞绕行过程进行改进。在贪婪转发模式下,通过权衡转发距离与链路质量以及信道接入难度实现对下一跳节点的选择,使得分组在保证转发距离的基础上选择更有利于传输的链路;当分组到达了局部最小点时,启用基于竞争的机会式转发。在竞争因素中加入了分组由空洞绕行模式回到贪婪转发模式可能性的因素,在空洞边缘处帮助分组转回到贪婪模式的邻居节点将在竞争中获得最高的优先级,继而获得首先转发的机会。NS2仿真实验结果表明,IAPR路由算法能够更好的实现分组转发,提高分组的传输效率。

Improvement on Location-based Routing Protocols in Wireless Mesh Networks

A location-based interference aware routing protocol IAPR is proposed,which aims to improve the performance of greedy forwarding and void detour through interference sensing of wireless channels.In the greedy forwarding mode,through the next hop selection process based on the tradeoff between forwarding distance,link quality and difficulty of channel access,better transmission link can be selected with the guarantee of packet forwarding distance.An competition based opportunistic forwarding mode is initiated when the packet forwarding reaches a local minimum.The competition considers the possibility of packet forwarding mode retreating from void detour to greedy forwarding,during which the neighboring node assisting the forwarding mode retreating will gain the highest priority in the competition,leading to the opportunity of first one to forward packet.NS2 simulation results have shown that IAPR protocol can better realize packet forwarding and enhance packet transport efficiency.