High-efficient Admission Control in Ad hoc Networks
Jibo Wei · Signal Processing · 2011
An admission control scheme is proposed to guarantee the quality of service(QoS) for real-time multimedia applications in Ad hoc networks.This scheme is based on cross-layer design,which mainly includes a destination-originated process on routing layer to admit or deny a coming flow based on the information sensed in MAC layer.The admission process operates only after the flow's request to enter the network,and comparing to the traditional source-originated admission control process,the proposed scheme will bring less control overhead.The second feature of the proposed scheme is that it also adopts a temporary bandwidth reservation to prevent both over-admission and over-reservation.With very low control overhead,the scheme can guarantee the throughput,end-to-end delay and delay violation of the real-time traffics,which is proved by the analysis and simulation.It is also showed that the scheme can evidently improve the channel utilization compared with ASAP.