Patent ID: 6321083
Filing Date: 2001-11-20
Classification: H04W

Abstract:
A method for locating hot spots of telephone traffic in a cell in a digital cellular mobile system, comprising:broadcasting an adjacent cell list to mobile stations in the cell,measuring the received signal level of the adjacent cells in the mobile stations with an ongoing call,reporting the measuring results from the mobile stations to the cellular network,determining for each mobile station a timing advance value proportional to the distance between the mobile station and the serving base station, anddetermining a hot spot of telephone traffic in the cell using the adjacent cell measurement and the timing advance values by,dividing a timing advance range into sub-ranges,forming groups of N cells from the adjacent cells, each group having a timing advance distribution counter for each timing advance subrange, where N=2,3, . . . ,selecting from each measurement report of the mobile station N adjacent cells whose measured received signal levels are the strongest,incrementing the timing advance distribution counter in the adjacent cell group which contains the selected adjacent cells, anddetermining the hot spot based on the coverage area information of the adjacent cells and the values of the distribution counters cumulated during a specific measurement sequence.