多业务移动通信系统中的呼叫接入控制

Call admission control scheme in voice/data integration mobile communication system

在多业务无线移动通信系统的呼叫接入控制中,不仅要考虑业务之间的优先级,同时也必须考虑切换呼叫的优先级。本文结合可移动边界算法和保护信道策略,提出了一种有效的多业务呼叫接入控制算法。为了方便地分析方案的性能,设计了一个二维的Markov链对方案的性能进行理论上的分析。通过数值分析结果表明,提出的算法同时保证了两种优先级,并提高了系统的性能。

When designing the call admission control algorithm for multi-traffic mobile communication system, we must consider two priorities: one is the priority between the traffics, other is the priority for handoff call. In this paper, an analytical model, a two-dimension Markov chain is proposed to investigate the performance of the call admission control scheme, which is based on guard channel strategy and movable boundary algorithm. Numerical results show that the two priorities are guaranteed simultaneously and the proposed scheme improves the system performances.