Wireless broadband technology is now in motion to provide higher data rate, wider coverage and improved mobility. Towards this the 4G - network is an integration of various wireless technologies and expected to provide seamless mobility. Moreover 4G-networks will be entirely packet switched systems based on IP protocol. One of the research challenges for 4G-Network is the design of intelligent mobility management techniques that take advantage of IP-based technologies to achieve global roaming among various access technologies. Hence Mobile IPv6 is considered to be one of the key technologies for integration of heterogeneous networks. However the original Mobile IPv6 does not support fast handover, which is essential function for mobile networks. Number of research groups working towards this to develop a common protocol to enable seamless mobility. In this paper we identify and explore the different issues and challenges related to mobility management in 4G - networks.
翻译：无线宽带技术目前正在运行,目的是提供更高的数据率、更广的覆盖面和更好的流动性。为此,4G网络是各种无线技术的一体化,可望提供无缝流动。此外,4G网络将完全是基于IP协议的封包交换系统。4G网络的研究挑战之一是设计智能流动管理技术,利用基于IP的技术实现各种接入技术的全球漫游。因此,移动IPv6被认为是融合不同网络的关键技术之一。然而,最初的移动IPv6并不支持快速移交,而快速移交是移动网络的基本功能。致力于为此制定共同协议以使无缝流动得以实现的研究小组的数量。在本文件中,我们确定并探讨与4G网络流动管理有关的各种问题和挑战。
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