Joint Optimization of Statistical Bandwidth Based on Interference-Aware Probability Prediction for Wireless Heterogeneous Mesh Networks
Zhao Hai-ta · Journal of Nanjing University of Posts and Telecommunications · 2014
A new available-bandwidth prediction algorithm for IEEE 802. 11 wireless multimedia networks is proposed. The proposed algorithm can calculate the overlap probability of the idle channel time between the sender and the receiver using the relation of collision probability and back-off time,and improve the accuracy of the overlap probability through the discrimination of the channel state and carrier sensing. According to the residual available bandwidth at each node,the algorithm can predict the feasible sending rate of the path and the path cost function considering inter-flow and intra-flow interferences to select the optimal forwarding path among all feasible paths. Simulation results show that the proposed algorithm can accurately calculate the channel bandwidth and improve the network throughput with quality of service( QoS) of multimedia flows.