摘要
目前无线传感器网络主要采用ZigBee协议,而ZigBee协议中AODVjr路由算法查找路由时容易引起广播风暴。根据AODVjr算法中路由请求命令帧结构和路由应答命令帧结构的特点,研究出一种改进的AODVjr路由算法。改进算法中通过命令帧结构中的命令选项保留字,取保留字第0位控制命令帧传输的方向性,该位为1表示向该节点的子节点方向传输,该位为0表示目的地不在该节点的子节点范围内。利用OMNET++4.1进行的仿真实验结果表明,改进的AODVjr路由算法能有效减少通信量,降低跳数,节约网络的整体能量,同时提高了网络的传输效率。
At present, ZigBee protocol is mainly applied in wireless sensor network. However, it is easier to arouse a broadcast storm when using the AODVjr routing algorithm. According to the characteristics of AODVjr algorithm, that is, route-requesting command frame structure and the route-replying command frame structure, an improved AODVjr routing algorithm is designed. The improved algorithm reserves word by commanding options in the command frame structure, and controlling the direction of command frame transmission by using the reserved word 0. If the bit is 1, the frame should be forward to the child node of the current node. Otherwise, the destination node is not a child node of the current node. The simulation result by using OMNET＋＋ 4.1shows that the improved AODVjr routing algorithm can effectively reduce traffic, and save the overall energy of the network, while improving the efficiency of network transmission.
出处
《计算机时代》
2013年第1期9-11,共3页
Computer Era
基金
广西教育厅科研项目(201010LX609)
