安全用户平面AGPS移动定位平台的设计与实现

Design and Implementation of AGPS Location Platform Based on Secure User Plane

安全用户平面辅助性GPS(AGPS: Assist-Global Position System)移动定位平台以其定位精度高、部署成本低等特点而受到运营商的高度重视。开放移动联盟(O- MA)相关规范制定了平台的系统结构,但未解决如何判定移动终端是否漫游以及如何判定移动终端是否支持相关定位协议等问题。在分析平台系统结构的基础上给出了解决上述问题的方法,并提出了组件式的平台软件结构,详细设计了核心进程的软件架构,描述了基于该结构的平台中定位请求消息的处理流程。

Assist -global position system location platform based on secure user plane attracts highly attention by telecom carriers for its highly accurate location precision and low deployment cost etc. The system architecture is presented in the OMA （Open Mobile Alliance） specification, but the specification does not provide solution about how to judge whether the mobile terminals roam and whether the mobile terminals sustain correlative location protocol. This paper analyses system architecture of the specification, puts forward methods to solve problems above and provides software architecture of the platform. What＇s more, it describes the software architecture of kernel process in detail and interprets the location request process flow based on this architecture.