An Approach to Creating and Maintaining House-Watching Network in MANET

It was found that in the disaster-hit area, a communication supporting system using the existing mobile ad hoc network techniques cannot function as expected and communication would be interrupted from time to time, since they have not taken into consideration the sleep operation that is a very frequently used means for users of mobile terminals to increase their battery life time. In order to solve the problem, this paper proposes a system model and two methods. The one is used to create a house-watching network taking charge of waking up the sleeping terminals, so that periodic or planned communication can be supported even though users freely get into sleep at their convenience. The other is used to incorporate the sleeping with the routing protocols, so that users’ consideration for other people can be technically supported, and they can know if their terminals are functioning as routers, and when sleeping buttons of their terminals can be pushed down safely without interrupting the relaying in progress, and so without interfering with others’ communication. These methods have been demonstrated to be effective by simulation experiments.