The development of GPS on the phone A-GPS status

The development of mobile positioning can be traced back to the GPS applications in military, aerospace, marine, and automotive and other fields, mostly aimed at the professional use as a precise positioning and navigation, of which, automotive applications and mobile positioning can be said to be into the mass market pioneer. However, the real into the mass market, or is that considered in the mass market, the key used in this application, it is the U.S. FCC has given the surge in calls and emergency relief needs E911 Act made in 1996. The Act requires the United States mobile phone operators and enterprises need to be completed in phases of the construction of mobile positioning device in order to use the growing popularity of mobile phone communication tools to help police and fire and medical relief agencies to strengthen the personal and property safety of the public protection.

On the other hand, many mobile phone service providers have begun to perceive the application of mobile positioning may be a considerable market potential applications. Thus, to the late 90s the industry began to introduce mobile location-related services. Furthermore, since the application must rely on mobile positioning and location positioning technology information databases such as additional hardware and software products, makes mobile location-based services has also attracted a GIS, positioning technology, the investment firms. At this point, with the wide application of wireless location services and safety, security and other needs of the upgrade, GPS technology and the integration of mobile phones was also seen as a mobile terminal the next 3-5 years, one of the main development priorities, the United States, Europe and Japan areas active in the relevant parts and components manufacturers have switched, end-products and system solutions such as product development and production.

Second, the application of GPS positioning technology operations

Currently using GPS to locate