Research On The Connectivity Maintenance In Mobile Ad Hoc Networks

Recently,wireless networks especially the mobile Ad Hoc networks have been extensively used,according to its structural character,the connectivity maintenance of the networks became the important problem.In the first instance,we discussed the structural character of the mobile Ad Hoc networks,the present research of the connectivity maintenance,and the structure of the paper.Secondly,we considered the case of dynamic connectivity maintenance with time-delays in the process of one agent sensing another agent. We used the distributed control law to consider the state of the agents in absolute positions and relative positions with constant time-delays,time varying delays,and we had the result that the networks system still connected by constructing the Lyapunov function. Also we gave the simulations results of five agents with time-delays,and attained that they still hold the connectivity.Thirdly,we constructed the power control navigation function and conclude that the communication radius of the agents converge to the maximum sensing radius. We had that the networks remain connected under the integrated control law which we designed. And then we intensively constructed the power and mobility control navigation function and concluded that the velocity of the agents converge to a constant,also we have the control methods for the connectivity maintenance of the networks.Finally,some conclusions and future problem study are addressed.