Wireless broadband technology is now in motion to provide higher data rate, wider coverage and improved mobility. Towards this the 4G -n etwork is an integration of various wireless technologies and expected to provide seamless mobility. Moreover 4G-n etworks will be entirely packet switched systems based on IP protocol. One of the research challenges for 4G-N etwork is th e design of intelligent mobility management techniqu es that take advan tage of IP-based technologies to achieve global roaming among various access technologies. Hen ce Mobile IPv6 is con sidered to be one of the key tech nologies for integration of heterogeneou s networks. However the original Mobile IPv6 does not support fast handover, which is essential fun ction for mobile networks. Number of research groups working towards this to develop a common protocol to enable seamless mobility. In th is paper we identify and explore the different issu es and challenges related to mobility management in 4G -networks
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机译：无线宽带技术正在发展，以提供更高的数据速率，更广泛的覆盖范围和更高的移动性。为此，4G网络是各种无线技术的集成，有望提供无缝的移动性。此外，4G-n etworks将完全是基于IP协议的分组交换系统。 4G-N网络的研究挑战之一是智能移动性管理技术的设计，该技术需要利用基于IP的技术来实现各种接入技术之间的全球漫游。 Hence Mobile IPv6被认为是集成异构网络的关键技术之一。但是，原始的Mobile IPv6不支持快速切换，这对于移动网络是必不可少的功能。为此目的而努力开发通用协议以实现无缝移动性的研究小组的数量。在本文中，我们确定并探索了与4G网络中的移动性管理相关的不同问题和挑战
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