US 6,192,244 B1Granted

Analysis of neighbouring cells in cellular telecommunications systems

AssigneeHewlett-Packard Company

InventorDaniele Abbadessa

Life of this patent

Estimating the term…

Loading patent…

Abstract

A method is disclosed of analyzing lists of neighboring cells in a cellular telecommunications system comprising a plurality of active mobile stations and a static network, the static network having a first cell and a plurality of cells neighboring the first cell, each of the cells having a base station. The method is applicable to GSM and GSM-like systems. In the case of a GSM system, the analyzing method may comprise the steps of: extracting from the static network the GSM MEAS RES produced by the mobile stations in said first cell and producing a reporting list including, for each position in the GSM BA(SACCH) list, the number of times that any of the base station identifiers has been reported for that position; extracting from the static network GSM HANDO CMD messages for handovers from said first cell, and producing a handover list of the GSM BCCHs and corresponding GSM BSICs in the extracted handover messages; correlating the reporting list and the handover list with respect to the BCCHs; and analyzing the correlated lists to determine whether any of the control channels is affected by bad frequency planning.

Claims18

Dependent claims

A method of analysing lists of neighbouring cells in a cellular telecommunications system comprising a plurality of active mobile stations and a static network, the static network having a first cell and a plurality of cells neighbouring the first cell, some of the neighbouring cells being determined by an operator of the system as planned neighbouring cells, each containing the cells having a base station, wherein:

each base station transmits, on a control channel, a signal including a base station identifier of that base station;
each mobile station in the first cell is provided with an ordered control channel list of control channel frequencies to be detected by that mobile station;
and
each mobile station in said first cell reports messages to the static network indicating the base station identifiers of control channels detected by that mobile station and the position in the control channel list of the respective control channel;
the method comprising the steps of:
extracting from the static network such reporting messages for said first cell and producing a reporting list including, for each position in the control channel list, the number of times that any of the base station identifiers has been reported for that position;
obtaining a planned neighbour list of the control channels and respective base station identifiers of the planned neighbouring cells;
correlating the reporting list and the planned neighbour list with respect to the control channels;
and
analysing the correlated lists to determine whether any of the control channels is affected by bad frequency planning.

7 more elements

Dependencies are inferred from the claim text.