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切换技术在移动系统中扮演着至关重要的角色,尤其表现在对于保持移动用户业务的连续性方面。目前,4G移动通信业务不断呈现出多样化的发展趋势,网络切换技术的缺点开始显示出来,并且网络切换技术的劣势严重影响着整个系统的性能。本文将主要对网络切换的类型进行介绍,并在此基础上讨论两类基于4G网络的切换控制方式:即资源感知切换控制和业务动态优先级切换控制,最后探讨一些关于4G网络的其他关键性技术。
Switching technology plays a crucial role in mobile systems, especially in terms of maintaining the continuity of mobile subscriber services. At present, the 4G mobile communications services continue to exhibit diversified development trends. The disadvantages of the network switching technologies are beginning to show. The disadvantages of the network switching technologies seriously affect the performance of the entire system. This article will mainly introduce the types of network handover, and on this basis, discuss two kinds of handover control methods based on 4G networks: resource-aware handover control and service dynamic priority handover control, and finally discuss some of the other key issues about 4G networks technology.