CDMA系统中的无线定位技术

位置服务能提供地址信息，进行终端定位、实时监测和跟踪。要及时准确地提供位置服务就需要选择合适的快速实现精确定位的方案。实现CDMA无线定位主要有3种方案：基于网络的定位方案、基于移动台的定位方案、GpsOne技术方案。3种方案的定位精度、可用性、定位时间、保密性和实现成本不同。采用哪种方案需要结合具体的网络情况统筹考虑。网络结构、信息承载协议、信息传输方式是实现无线定位系统的基础，具体实施时有不同实现方式，有些细节需要运营商自行制订规则。

Wireless Positioning Technology for CDMA System

Location services provide address information, and make terminal positioning and real-time detection and tracking. A solution to quickly-implemented and high-precision positioning is necessary for timely and accurate location services. There are 3 solutions to wireless positioning in the CDMA system. One is based on the network, the second on the mobile station, and the last on GpsOne technology. They are different in positioning precision, usability, positioning time, security and implementation cost. Therefore, they should be selected and applied according to specific requirements of networks. Based on network architecture, message bearing protocols and message transport modes, the implementation of the wireless positioning system has different models. Therefore, it is necessary for operators themselves to make rules of some details in the implementation.