a variation of reporting center scheme
Location tracking keeps track of the location of mobile users in a mobile network. It involves two basic operations: updating and paging. Accordingly the cost of location tracking consists of two parts: updating cost and paging cost. Efforts have been made to minimize the total tracking cost. One of the strategies is the reporting center scheme which selects some cells as reporting centers. Mobile users will only update their location when they move into a new reporting center, and when a call arrives, the vicinity of the reporting center will be paged to find the specific user. This scheme decreases updating cost while increasing paging cost. Hac and zhou proposed an algorithm to minimize the total cost of the reporting center scheme. This paper presents a variation of the reporting center scheme which clusters the reporting centers based on some specific criteria. Thus updating cost will be further decreased but the paging cost will increase. The paper compares the performance of the variation with the original reporting center scheme and shows that the variation scheme outperforms the original one when the call-to-mobility ratio is lower than some threshold.
reporting centers clustering location management cellular networks performance comparison