Next-generation architecture will be flexible, open, and standards-based. It will facilitate a smooth migration from existing hierarchical circuit-switched technology to peer-to-peer, packet-switched networks. These wireless networks of the not-so-distant future will be able to take advantage of the true peer-to-peer communications technology of IP to deliver better value to service operators and end users alike (see Figure 3).

Figure 3. Existing Architecture versus IP Architecture

There are four key deliverables that the wireless IP network of the future must provide:

1. superior end-user experience—The network must be customizable, easy to use, and allow fast access to all services from a single device.
2. orderly network migration—There must be a smooth migration path from existing network protocols to the new wireless IP network, and the new network must demonstrate superior performance.
3. reduced cycle time to commercialize applications—The network must make Internet applications easy to implement in the wireless world. Thus, existing services are made immediately available, while new applications may be made available in the wireless world at the same time or faster than they are made available to wireline users.
4. reduced cost of ownership—The new network must make the business case for the wireless Internet achievable, particularly for worldwide operators and service providers.