摘要
以往对有/无线ATM混合网络传输容量(带宽)资源管理的研究或是局限于无线网络部分、或是局限于骨干(有线)网络部分,很少有人研究整个网络中涉及越区切换的链路的传输容量资源管理方案。本文将无线系统中越区切换对传输容量管理的影响扩展到骨干网,分别针对基站(BS)与基站控制器(BSC)之间的链路(包括空中接口)和基站控制器间的虚通道(VP),提出了自适应于各小区中各类呼叫业务量状态的传输容量动态分配和越区切换保护容量(Guard capacity)预约算法。通过对其性能的数值模拟分析,结果表明应用该算法时各类业务的阻塞率的比例与其指标要求的比例基本一致,因而可以适用于各类传输容量需求迥异的多媒体业务传输,使传输容量资源得以有效地利用。
The previous research on administration of the transmission capacity in the wired/ wireless ATM networks only focuses on wired part or wireless part. There are very few people do the work extending to the links associating with handoff in the whole network. This paper develops the algorithms of transmission capacity administration on the link connecting the base station and base station controller (including the air interface of the base station) and the VPs among the base station controllers in the wired/ wireless ATM networks, which adapt to the traffic state of each service in every cellular cell to allocate (provision) transmission capacity and to reserve handoff guard capacity on these links, respectively. By simulating and analyzing the performance of the algorithm, it is found that it does well for the multimedia communication in which the transmission capacity requirement of each service may be widely different, so that the network bandwidth resource can be used efficiently.
关键词
网络传输
ATM
通信网
容量分配
Wired/wireless ATM networks, Capacity allocation, Handoff, Service classification
