Bandwidth Allocation Algorithm of IEEE802.16j Relay Network Based on Utility Optimalizing

摘要

Regarding the bandwidth allocation of IEEE 802.16j two-hop relay networks, a Dynamic Bandwidth Allocation (DBA) algorithm based on the utility optimization is proposed. During the bandwidth allocation process of relay links, DBA algorithm takes the Quality-of-Service (QoS) requirements of different services into account by means of utility functions came from economic theories. Under the certain constraints, mathematics model is established aiming at maximizing the total utility of system. Simulation results show that DBA algorithm is obviously better than WFQ(Weighted Fair Queuing) and WRR (Weighted Round Robin) in terms of the throughput and average delay.