Comprehensive mobile communications device registration method
First Claim
1. A method of reducing the number of base station pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller, comprising the steps of:
- storing at said system controller a list of mobile station registration information corresponding to said mobile station, said registration information comprising a location parameter for a base station through which said mobile station most recently registered;
identifying a set of base stations located within a fixed distance from said base station through which said mobile station most recently registered by calculating distances between said base station and every other base station in the system and selecting only those base stations having distances less than or equal to a predetermined maximum distance threshold; and
paging said mobile station in said set of base stations when a message is to be directed thereto.
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Abstract
A comprehensive method for mobile station registration in a cellular communication system wherein registrations are made due to multiple stimulus. Registration can occur as a function of distance traveled since the previous registration. Registration can occur due to entering the coverage area of a base station assigned to a zone in which the mobile station has not recently registered. A registration timer can be used to ensure a minimum time between registrations. Registrations can occur at power up and at power down. The mobile station can be ordered to register by a transmission from a base station. Registration can occur due to parameter changes with in the mobile station. Registration may also occur through necessary communication with a base station which is not expressly directed to registration.
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Citations
18 Claims
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1. A method of reducing the number of base station pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller, comprising the steps of:
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storing at said system controller a list of mobile station registration information corresponding to said mobile station, said registration information comprising a location parameter for a base station through which said mobile station most recently registered; identifying a set of base stations located within a fixed distance from said base station through which said mobile station most recently registered by calculating distances between said base station and every other base station in the system and selecting only those base stations having distances less than or equal to a predetermined maximum distance threshold; and paging said mobile station in said set of base stations when a message is to be directed thereto. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of reducing the number of base station pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller wherein each base station is associated with a corresponding zone of base stations, comprising the steps of:
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storing at said system controller a list of mobile station registration information corresponding to said mobile station, said registration information comprising a location parameter and a zone information parameter for a first base station associated with a first zone through which said mobile station most recently registered; identifying a set of base stations located within said first zone and within a fixed distance from said base station through which said mobile station most recently registered by calculating distances between said base station and every other base station in the system and selecting only those base stations having distances less than or equal to a predetermined maximum distance threshold and lying within said first zone; and paging said mobile station in said set of base stations when a message is to be directed to said mobile station. - View Dependent Claims (8, 9, 10, 11, 12, 14, 15)
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13. A method of reducing the number of base station pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller wherein each base station is associated with a corresponding zone of base stations, comprising the steps of:
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storing at said system controller a list of mobile station registration information corresponding to said mobile station comprising an identity of a first base station associated with a first zone, wherein said first base station is the base station through which said mobile station most recently registered; identifying a set of base stations located within said first zone and within a fixed distance from said base station through which said mobile station most recently registered by calculating distances between said base station and every other base station in the system and selecting only those base stations having distances less than or equal to a predetermined maximum distance threshold and lying within said first zone; storing at said system controller a paging region list corresponding to said first base station wherein said paging region list comprises said set of base stations; and paging said mobile station in said set of base stations identified in paging region list when a message is to be directed to said mobile station.
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16. A method of reducing the number of base station pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller wherein each base station is associated with a corresponding zone of base stations, comprising the steps of:
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storing at said system controller a list of mobile station registration information corresponding to said mobile station, said registration information comprising a zone information parameter for a first base station associated with a first zone through which said mobile station most recently registered; receiving at said system controller a registration message from said base station through a second base station in a second zone; setting a timer associated with said zone information parameter information corresponding to said first base station; and paging said mobile station in a set of base stations in said first zone of base stations if said timer has not expired when a message is to be directed to said mobile station.
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17. A method for reducing the number of base stations pages required to communicate a page to a mobile station located within a system of base stations controlled by a system controller, comprising the steps of:
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storing at said system controller a list of mobile station registration information corresponding to said mobile station, said registration information comprising a locating parameter for a base station through which said mobile station most recently registered; setting a timer associated with said list of mobile station registration information corresponding to said mobile station; resetting said associated timer when a registration message is received from said mobile station; and if said timer expires before the step of resetting, identifying a set of base stations located within a fixed distance from said base station through which said mobile station most recently registered by calculating distances between said base station and every other base station in the system and selecting only those base stations having distances less than or equal to a predetermined maximum distance threshold and paging said mobile station in said set of base stations. - View Dependent Claims (18)
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Specification