We introduce the frame of cellular mobile IP network and give some solutions about handoff.

给出了蜂窝移动IP网络的构架，对其提出了相应的越区切换的解决方案。

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IMS defines a complete architecture and framework that enables the convergence of voice, video, data and mobile network technology over an IP-based infrastructure.

IMS定义了一个完整的体系结构和框架，允许在基于IP的基础设施上对声音、视频、数据和移动网络技术进行聚合。

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As the only global equipment supplier with its fixed network, mobile network and data communication IP technologies ranking top 3 in the world, Huawei provides service to 36 of world top 50 operators.

作为唯一一家在固定网络、移动网络和数据通讯IP技术等领域都进入全球前三强的设备供应商，华为为全球排名前50家运营商中的36家提供服务。

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Security solutions based on physical infrastructure, and policy expressed in terms of a particular device, the corporate PC, an IP address, network port, or application protocol are becoming useless in a mobile, borderless world.

FORBES: Going Mobile: Security in the Age of Ubiquity

And the move to mobile devices will be a new battleground in the enterprise network: Avaya and Cisco are both launching IP phone tablets.

FORBES: Cisco Business-ifies The Bluetooth Headset