Research On Power-Aware Routing Algorithms In Mobile Ad Hoc Networks

With the rapid development of mobile advices and the Internet, mobile computing is becoming increasingly close to human life. Currently, mobile communications based on fixed infrastructures are not fully meet people's requirements. Thus, a new flexible way of communications networks, i.e. mobile ad hoc networks (MANET), becomes a reality. An MANET is a special type of a temporary wireless mobile network consisting of a collection of mobile nodes with radio interfaces. Routing is one of the most popular researching topics in ad hoc network. The aim of routing is at route discovery, route selection and route maintenance.In Ad hoc network, power of nodes supplied by batteries are extremely limited. Unlike nodes in fixed networks, in which power suffice, power of nodes in an MANET will certainly reduce with time till exhausted, which leads communications between nodes to disrupted and leads networks to partitioned. Therefore, energy-saving becomes increasingly important for an MANET to effectively and efficiently be in active.This research focuses on routing algorithms in MANETs, especially on routing algorithms with power protection. Considering energy consuming differences among the four states of a node, i.e., transmission, receiving, idle and sleeping, an energy prediction model is built to obtain the average energy consuming of a nodes which is then used as a parameter of Ants Colony Algorithms. Based on Ants Colony Algorithms, a routing algorithm with power protection is proposed. Simulation shows that the proposed algorithm can considerably reduce the number of energy-advertisement and prolong the lifetimes of nodes and MANETs. This study is useful for MANETs to run effectively.