Abstract
Multicast services have been introduced into wireless cellular networks as an extension to existing unicast only services. It is essential of radio resource management to optimal system performance in the service integrated environment. A call admission control (CAC) scheme for such systems was proposed to address issues of dynamic access for integrated services. Taking the features of integrated services into account, the proposal extended virtual bandwidth reservation model to guarantee QoS of vary service classes. On that basis, optimal bandwidth preemption and service degradation policies were proposed to further increase system performance. Simulation results show that the proposed scheme can efficiently facilitate multicast transmission to reduce call blocking probabilities and achieve better service provision capacity.
| Original language | English |
|---|---|
| Pages (from-to) | 2664-2670 |
| Number of pages | 7 |
| Journal | Xitong Fangzhen Xuebao / Journal of System Simulation |
| Volume | 23 |
| Issue number | 12 |
| Publication status | Published - Dec 2011 |
Keywords
- Bandwidth preemption
- Call admission control
- Multicast and unicast integration
- Resource allocation
- Service degradation