Smart Phone and Next Generation Mobile Computing

272 Smart Phone and Next-Generation Mobile Computing

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Accounting module — The IOTA gateway maintains an accounting

table that can be queried by authentication entities such as foreign

agents, local AAA servers, or web authenticators used in the simple

IP service.

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Integrated web cache — The IOTA employs a web cache that utilizes

IP packet mangling techniques to avoid unnecessary round-trips

to a mobile station’s home network for mobile IP services.

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Simple IP module — This module enables roaming of mobile access

but not seamless handoff. It combines dynamic IP address assign-

ment and IP packet filtering to provide browser redirection service,

in which the user must be authenticated when a web browser is

launched.

The IOTA approach can also be applied