Abstract
Due to the noncentered, self-organizing, and self-healing characteristics, mobile ad hoc networks (MANET) have been more and more widely used as an alternative access technology for regions having no fixed infrastructure. On-demand routing protocols (e.g., ad hoc on-demand distance vector (AODV)) are used to cope with the rapidly changing topology of MANET and reduce the network overhead. Taking delay, stability, and remaining energy of nodes into consideration, a fuzzy-logic-assisted AODV (FL-AODV) routing algorithm is proposed in this paper to further improve the reliability of the route in MANET. In the route discovery phase, the node with the highest reliability is selected as the relay node, and the route with the highest accumulated reliability is reserved for data transmission. Simulation results show that, compared with the traditional AODV protocol and the fuzzy logic routing algorithm (FLRA), the proposed routing protocol has higher reliability without increasing delay, i.e., better link connectivity and longer route life. The average routing reliability is about 18% higher than AODV while the average delay is the same low when the number of node greater than 70.
Highlights
National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China; Citation: Li, J.; Wang, M.; Zhu, P.; Abstract: Due to the noncentered, self-organizing, and self-healing characteristics, mobile ad hoc networks (MANET) have been more and more widely used as an alternative access technology for regions having no fixed infrastructure
In order to determine a route of high reliability and low latency in the topology of dynamic rapid changes, we propose to use fuzzy logic based on the ad hoc on-demand distance vector (AODV) of the shortest path to consider multiple parameters to enhance routing reliability and delay concurrently
The proposed fuzzy-logic-assisted AODV (FL-AODV) routing algorithm selects the appropriate node by integrating multiple parameters, taking into account the reliability of the relay node, which solves the limitation of considering a single factor in the routing selection process
Summary
We assume that each mobile node is equipped with GPS and the same beam array antenna in order to know its position and speed information in real time. In the route discovery process, it is supposed that each antenna has its own node ID to release its position coordinates, which allows the receiving node to calculate the direction of the beam array antenna of the sending node, thereby avoiding flooding broadcast. When communication needs to be established, each mobile node can directionally receive the routing table of the neighboring node through the beam array antenna to estimate the information of the neighboring node. We assume that the switching time of the beam array antenna is negligible in this paper
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