Patent EP0710043A1 successfully refreshed from Google Patents.
EP0710043A1
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EP
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A method of monitoring a cellular mobile radio system to derive location area information
Assignee: HP Inc
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Filing: 1994-10-28
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Granted: —
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Expires: 2014-10-28
Abstract
Abstract A method is provided for deriving information about location areas in a cellular mobile radio system that comprises a fixed part providing radio coverage in a plurality of cells logically grouped into location areas, and mobile stations for communicating with the fixed part of the system. In such systems, each mobile station passes location update messages to the fixed part of the system, at least upon changing location areas, to enable the fixed part to keep track of the mobile stations. The present method involves monitoring these location update messages to extract location-area related data, and then combining (30, 31, 32) the data extracted from many such messages to produce location-area related information such as lists of cells (35) making up each location area, the identity of gateway cells in each location area, lists (36) of adjacent location areas, and the identity of the most used location areas.
Inventors
- 👤 Richard Brown
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 04:16
CPC Classifications
H; H04; H04W; H04W24/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
109 words
A monitoring method for a cellular mobile radio system that comprises a fixed part providing radio coverage in a plurality of cells logically grouped into location areas, and mobile stations for communicating with said fixed part of the system, each mobile station being operative to pass location update messages to said fixed part at least upon changing location areas; said method involving: -- monitoring said location update messages to extract location-area related data from each of at least some of said messages, -- combining said location-area related data extracted from a plurality of said location update messages to produce location-area related information, and -- outputting said location-area related information.
Claim 2
Dependent Claim
51 words
A monitoring method according to claim 1, wherein said location-area related data extracted from a said location update message comprises the current cell and location area of the said mobile station that sent the message, said location-area related information being the identification of the cells making up a said location area.
Claim 3
Dependent Claim
55 words
A monitoring method according to claim 1, wherein said location-area related data extracted from a said location update message comprises the old and new location areas of the said mobile station that has sent said message upon changing location areas, said location-area related information being the identification of which location areas are adjacent each other.
Claim 4
Dependent Claim
71 words
A monitoring method according to claim 1, wherein said location-area related data extracted from a said location update message comprises the current location area of the said mobile station that sent the message, said method involving maintaining a count of such messages for each location area on which data is extracted, and said location-area related information being the identification of which location areas are responsible for the most location update messages.
Claim 5
Dependent Claim
79 words
A monitoring method according to claim 1, wherein said location-area related data extracted from a said location update message comprises the current cell and location area of the said mobile station that sent the message, said method involving maintaining a count of such messages for each cell of a said location area, and said location-area related information being the identification of the cells in that location area that constitute the primary gateway cells for entry to the location area.
Claim 6
Dependent Claim
53 words
A monitoring method according to claim 1, wherein said location update messages are monitored across said system to extract for each monitored message the current cell and location area of the mobile station that sent the message, a check then being made that no cell is associated with more than one location area.
Claim 7
Dependent Claim
41 words
A monitoring method according to claim 1, wherein said mobile radio system is a GSM-type system and said location update messages are monitored on at least one 'A' interface between a Base Station Subsystem BSS and a Mobile Switching Center MSC.
Claim 8
Dependent Claim
90 words
A monitoring method according to claim 7, wherein said location update messages are monitored across said system on the 'A' interfaces associated with all MSCs, said method including: -- determining from said location update messages monitored on said 'A' interfaces, the current location area of the mobile station that sent the message; -- associating the location area determined for each monitored message with the MSC associated with the 'A' interface on which the message was monitored; -- checking that no said location area is associated with more than one MSC.
References Cited (Backward Citations)
No citation records indexed.
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