摘要
提出了一种用于无线移动网络中语音和数据业务共存下的呼叫接入控制方案.该方案将呼叫分为四类:新产生的语音和数据呼叫;从相邻小区发出切换请求的语音和数据呼叫.通过建立多维马尔可夫链模型和数值计算,对该方案的性能进行了分析,并与没有采用强占信道机制或切换专用信道机制的接入控制方案进行比较.结果表明,该方案对于网络优化有一定的辅助作用.
This paper presented a call admission control (CAC) scheme in wireless mobile networks with integrated voice and data services. Calls are separated into four different classes in this scheme: originating voice call, originating data call, voice and data calls handover from neighboring cells. The performance of the proposed scheme was analyzed by building a multi-dimensional Markov chain model and numerical calculation. The scheme was compared with the admission control schemes without preemption mechanism or handover-dedicated channels mechanism. The results show that the scheme is useful to the network optimization.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2004年第2期181-184,188,共5页
Journal of Shanghai Jiaotong University
关键词
无线移动网络
呼叫接入控制
信道分配
切换
马尔可夫链
Communication channels (information theory)
Markov processes
Mobile telecommunication systems
Wireless telecommunication systems
