蜂窝移动通信中流动性业务的信道分配

通过对流动性力务信道分配问题的研究，阐明了在流动性业务条件下，混合信道分配能够达到最佳性能，提出了一种优化的混合信道分配（ＯＨＣＡ）方案，分析并给出了该方案中动静信道比的定量关系，分析表明：动态信道与信道的比列与业务量变化的大小以及相应的服务等级有关。通过仿真证明，该ＯＨＣＡ方案与现有的固定信道分配（ＦＣＡ）和动态信道分配（ＤＣＡ）方案相比，具有较小的呼阻率和较高的频谱利用率，可用来处理局部热点问

Channel Assignment under Flowing Traffic Load in Cellular Mobile Communications

The paper addresses the channel assignment under flowing traffic load. It shows that hybrid channel assignment (HCA) scheme is particularly suitable for this traffic type and can achieve optimal performance. An optimized HCA(OHCA) scheme is proposed and the ratio of active channels and static channels is derived. The analysis indicates that the ratio is bounded by the traffic fluctuation and the quality of service (QoS) requirement. By simulation, OHCA is shown to be superior to the current fix channel assignment (FCA) and dynamic channel assignment (DCA) in terms of call blocking probability and spectrum utilization. OHCA can be used to handle the hot spot case, and is therefore an attractive scheme for practical systems.