A Tracking Range Based Ant-Colony Routing Protocol for Mobile Wireless

Mobile wireless sensor network (M-WSN) is wireless sensor network without infrastructure, and includes mobile nodes. According to certain mobility models, mobile nodes move around in the network, and change their locations continually. Because the paths between nodes are not fixed any more, it normally takes nodes longer time to communicate each other. To solve this problem in the M-WSN, this paper presents a new ant-colony routing protocol. The new protocol uses the tracking range of mobile nodes to split the path between source node and destination node into two parts: indefinite path and definite path. The indefinite path is almost the same as the path of probabilistic search in the traditional ant-colony routing protocols. The definite path is the path in the tracking range of mobile nodes. The message from source node is first sent through indefinite path until the tracking range of mobile destination node is reached. Then the message is sent through definite path to reach the destination node. Simulation results showed that our protocol speeded the procedure of message delivery.