An Integrated Geographic Information Service Model Based on 3G

Abstract_The 3G technology brings a great increase of wireless
data transmission capacity, makes it possible for mobile
geographic information services. Analyzing a series problems
caused by mobile devices with a limited resource, a new
integrated geographic information service mechanism is
discussed based on 3G. The three key technologies, adaptive
interactive mechanism, asynchronous transfer strategy and map
cache management are discussed in detail. It provides a practical
solution for efficiently providing diversified spatial information
services to the mushroomed mobile users.

Keywords-3G; mobile device; geographic information service;

LBS