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Call Admission Control based on Bandwidth Allocation in Ultra Wide Band (UWB) Ad Hoc Networks
| International Journal of Computer Applications |
| Foundation of Computer Science (FCS), NY, USA |
| Volume 69 - Number 1 |
| Year of Publication: 2013 |
| Authors: C. Viswanathan, K. M. Mehata, Latha Tamilselvan |
10.5120/11805-7453
|
C. Viswanathan, K. M. Mehata, Latha Tamilselvan . Call Admission Control based on Bandwidth Allocation in Ultra Wide Band (UWB) Ad Hoc Networks. International Journal of Computer Applications. 69, 1 ( May 2013), 14-20. DOI=10.5120/11805-7453
Abstract
In Ultra-Wide Band (UWB) ad hoc networks, admission control and resource management are of major concern. The admission control algorithm helps in resolving infeasible power, reduces the congestion, and guarantees the quality of service (QoS) of unlicensed secondary users. The long acquisition time in the UWB transmissions and the near-sender blocking problems can be resolved by resource management effectively. In this paper, an admission control scheme and the resource management in UWB ad hoc routing is proposed. The bandwidth allocation and the bandwidth redistribution methods are employed here for the call admission control. Initially, bandwidth allocation is done using the HCF Controlled Channel Access (HCCA) centralized access which allows the HC to assign Transmission opportunity (TXOPs) to the ACs by taking into account the specific time constraints of each AC. After allocating the bandwidth, the free bandwidth is allocated to the other stations by estimating the traffic load. The call admission control is employed in order to guarantee the QoS. Simulation results show that the bandwidth allocation and call admission control scheme effectively solves the near-sender blocking problems in UWB ad hoc networks and improves achieved throughput and supports best effort traffic.
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