Mobile communications device registration method
First Claim
1. In a cellular communication system defined by a plurality of cells, a method for establishing mobile station paging zones in said cellular communication system comprising the steps of:
- transmitting, in each one of said cells, a respective cell location information and distance value;
receiving at a mobile station location information and distance value for a current cell in which said mobile station is currently located;
computing a distance between said current cell and a previous cell in which said mobile station registered;
transmitting mobile station registration information when said computed distance is at least a distance value for said previous cell; and
determining from said transmitted mobile station registration information a group of cells within a distance of said current cell corresponding to said current cell distance value.
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Abstract
A distance based method for mobile station registration in a cellular communication system. The mobile station registers whenever it moves into a new cell that is greater than some predefined distance from the previous cell where it registered. Cell base stations transmit corresponding base station location information and a distance value. The mobile station receives the base station location information and computes the distance from a cell in which the mobile station last registered to the current cell in which the mobile station is present. When the computed distance is greater than the distance value associated with the registration cell the mobile station registers. Pages for the mobile station are transmitted within a group of cells within a distance of the registration cell corresponding to the registration cell transmitted distance value.
460 Citations
33 Claims
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1. In a cellular communication system defined by a plurality of cells, a method for establishing mobile station paging zones in said cellular communication system comprising the steps of:
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transmitting, in each one of said cells, a respective cell location information and distance value; receiving at a mobile station location information and distance value for a current cell in which said mobile station is currently located; computing a distance between said current cell and a previous cell in which said mobile station registered; transmitting mobile station registration information when said computed distance is at least a distance value for said previous cell; and determining from said transmitted mobile station registration information a group of cells within a distance of said current cell corresponding to said current cell distance value. - View Dependent Claims (2, 3)
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4. In a cellular communication system, a method for reducing the number of cells in which paging for a mobile station is required, the method comprising the steps of:
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transmitting from each cell base station corresponding location information and a distance value; receiving at said mobile station, when located in a current cell, said current cell base station location information and distance value for said current cell; computing a distance between said current cell base station location and a previous cell base station location in which said mobile station previously registered; comparing said computed distance with a distance value corresponding to said previous cell base station; transmitting mobile station registration information to said current cell base station when said computed distance is at least said previous cell base station distance value; receiving at said current cell base station said mobile station registration information; and determining a group of cells within a distance of said current cell corresponding to said current cell distance value. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11)
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12. In a cellular communication system in which a mobile station registers in a first cell and where said mobile station is provided location information of a first base station located in said first cell, a method for re-registration comprising the steps of:
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communicating to said mobile station, by a second base station located in a second cell, location information of said second base station; computing at said mobile station a distance between said first base station and said second base station; and registering by said mobile station in said second cell when said computed distance is greater than or equal to a predetermined distance value. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for mobile station registration in a cellular communication system comprising the steps of:
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registering by a mobile station in a first cell; transmitting to said mobile station when located in said first cell, by a first base station, located in said first cell, first base station location information; transmitting to said mobile station when located in a second cell, by a second base station located in said second cell, second cell location information; computing a distance between said first base station and said second base station; and registering by said mobile station in said second cell when said computed distance value is greater than or equal to a predetermined distance. - View Dependent Claims (22, 23, 24, 25)
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26. In a cellular communication system defining a plurality of cells, a method for establishing mobile station paging zones in said plurality of cells, comprising the steps of:
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transmitting, in predetermined ones of said cells, respective cell location information; receiving at a mobile station, when located in a current cell, said current cell transmitted location information; computing a distance between said current cell and a previous one of said cells in which said mobile station previously registered; transmitting mobile station registration information when said computed distance is greater than or equal to a predetermined distance value; and determining from said transmitted mobile station registration information a group of cells within a distance of said current cell corresponding to said current cell distance value. - View Dependent Claims (27, 28, 29, 30, 31)
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32. A cellular communication system comprising:
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a plurality of base stations each defining a cell, for providing location information to a mobile station; said mobile station for receiving location information from each respective one of said base stations when located within a corresponding one of said cells, providing registration information to a first base station of said plurality of base stations computing a distance between said first base station of said plurality of base stations and a current base station of said plurality of said base stations based upon said location information and if said distance exceeds a predetermined value, providing registration information to said current base station. - View Dependent Claims (33)
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Specification