Smart Phone and Next Generation Mobile Computing

The Next Wave of Computing 79

Depending on the requirements of a location-aware application

and wireless networks infrastructure in place, one or more position-

ing techniques may be combined to allow both indoor and outdoor

positioning with desirable accuracy and response time at modest cost.

Furthermore, because a mobile user’s location is also context data,

location-based services can be fused with other context-aware opera-

tions, services, and applications to improve adaptability over context

changes. For example, a smart phone roaming into the range of a

wireless Internet web proxy server may silently switch to it for better

web access performance.

Location-aware mobile computing usually utilizes GIS to enrich its

applications and services. A