无线 ATM 网络中的呼叫连接过程  

Call Connection Process in a Wireless ATM Network

作　　者：赵冬梅[1] 

机构地区：[1]北方交通大学

出　　处：《铁道学报》1998年第4期56-61,共6页Journal of the China Railway Society

基　　金：国家863计划资助项目

摘　　要：无线ＡＴＭ是ＡＴＭ技术和移动通信技术发展的结果。无线ＡＴＭ研究的任务是，使用无线技术使ＡＴＭ服务无缝隙扩展到移动设备。在固定ＡＴＭ网络中，终端对网络的接入点是固定的。在无线网络中，移动用户的接入点在连接建立前是未知的，并且在连接建立后仍有可能发生变化。因此，必须改进现有的ＡＴＭ标准，使其能支持终端的移动性。本文给出无线ＡＴＭ中支持终端移动性的一种连接管理过程，其中移动台位置登记和呼叫连接服务过程基于ＯＶＥＲＬＡＹ信令，作者在此基础上提出一种新的呼叫连接切换过程，即同时使用切换前所在小区和切换后所要到达的小区完成切换信令，提高了切换成功的可能性。Wireless ATM (or WATM) is a result of development of the ATM technology and the mobile communication technology. The task of wireless ATM is to realize seamless expansion of ATM service to the mobile devices. In a fixed ATM network, the terminals are connected to a network through fixed access point. While in a wireless network, the access point through which a mobile terminal access to the ATM network is unknown before a connection, moreover, the access point may change during the connection. So, it is necessary to enhance the existing ATM protocols to support mobility of terminals. This paper presents a connection management process in a wireless ATM network. The location registration of mobile and the call connection establishment process are based on OVERLAY signalling. The author proposes a handoff process which is accomplished by the previous zone and the current zone. The new process can improve the possibility of successful handoff greatly.

关 键 词：切换 移动性 呼叫连接过程 无线ATM网络 

分 类 号：TN923[电子电信—通信与信息系统]