Smart Phone and Next Generation Mobile Computing

Mobile Application Challenges 409

applications and services. To foster future location-aware comput-

ing systems and location-based services, we explore location-related

schemes and techniques used in emerging location-based services

and applications.

7.1.1 Location Representation

In location-aware computing, the terms position and location are used

frequently. In most cases they are interchangeable, but they do not

always refer to the same thing. Position is defined as the geospa-

tial place of an object, often represented by coordinates. Location

has a more general, semantic meaning with respect to the posi-

tion of an object; for example, the location of a person could be

“room 113 of the engineering building.” The process of determin-

ing an object’s ...