The Improved Algorithm of TCP RQB under the Network Environment of Ad hoc

Under the network environment, the Network topologies will change which leads to the changes of the routes for the moving characteristic of the nodes. We analyze the effects on TCP RQB caused by the changes of the routes in AD hoc and present the modified methods for TCP RQB, which is called TCP RQB-R, on the basis of the theory above. By identifying dynamically the changes of routes in the method of cross-layer and updating the RTT_max and RTT_min in time, TCP RQB-R can make a right judgment of the degree of congestions and control the congestions effectively. Based on the simulation experiment of NS2, the improved TCP RQB-R has a better performance than TCP RQB.