A mobile ad-hoc network is composed of only mobile nodes, which are distributed dynamically, without any wired backbone.
Since the existing works on ad-hoc routing protocol are mostly biased toward a military application, we need a new routing scheme for a support of multimedia services in mobile ad-hoc networks. Therefore, we propose a novel scheme that can support a variety of traffic characteristics and could be applicable to high-speed and multimedia data services in mobile ad-hoc networks by using adaptive transmission power level.
When an urgent data or voice traffic is applied, we should support a real-time transmission since it is most important to reduce a route query response time. In this case, we use a larger transmission power level. On the other hand, for a non real-time data traffic, which is insensitive to delay, we can use a smaller transmission power level.
As a result of simulation, we can reduce the average number of hops for real-time traffic. In the case of non real-time traffic, the call blocking probability and call re-routing rate are slightly increased, although they are acceptable. The proposed scheme has better performance than conventional method, which is performed based on uniform transmission power level, in view of route query delay time.
