Subscriber care of a wireless local loop system

This paper focuses on a subscriber positioning system (SPS). The SPS is a customer care system for managing subscribers of a GSM 900/1800/1900 technology based wireless local loop (WLL) system. The SPS is a geographical information system (GIS) and it contains both information of the radio network and subscribers. A WLL subscriber has no rights to move within the network. The location of a WLL subscriber is used for finding radio network cells that provide network service on the subscriber location. The subscriber gets telephone services only inside these cells. A WLL operator needs a SPS for defining and maintaining service providing cells of WLL subscribers. Particularly, the subscriber care system is required during network evolution when the service providing cells of subscribers can change.