USSD网关计费系统设计与实现

Design and Implementation of Fee System in USSD Gateway

非结构化补充数据业务USSD(Unstructured Supplementary Service Data)是一种基于GSM移动通信网络的新型交互式会话业务。USSD业务能够在非WAP(Wireless Application Protocol)设备上提供类似WAP手机的上网功能,大大利用了现有网络资源。文中对USSD业务概念、流程及特点作了阐述;在USSD网关通信结构的基础上阐述了USSD网关的计费流程,提出了计费系统的设计方法,并给出具体实现。

Unstructured Supplementary Service Data (USSD) is a new GSM service which provides high-speed interactive communication between the applications and subscribers across the GSM network. USSD service allows subscriber to access ISP with a WAP-like mechanisim but on a non-WAP handset. USSD make a good use of existing GSM network and GSM mobiles. Both definitions and service features are introduced in this paper. The implementation of the fee system is also provided in this paper.