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AssigneeQUALCOMM Incorporated
InventorsKlein S. Gilhousen, Gadi Karmi, Edward G. Tiedemann, Jr., Alejandro Raul Holcman
Estimating the term…
A method and system for performing an intersystem handoff of communication with a mobile station between base stations of first and second cellular systems is disclosed herein. At the mobile station, a quantifiable parameter of a signal transmitted by a second base station of the second system is measured. When the measured value of the quantifiable parameter passes through a first predetermined level, the mobile station communicates a signal quality message via a first base station of the first system to a first mobile switching control station. A channel request message is then communicated from the first mobile switching control station to a second mobile switching control station within the second system. At the second base station, a quantifiable parameter of the signal received from the mobile station is also measured. The second base station establishes communication with the mobile station when the measured value of the quantifiable parameter passes through a predetermined level. Alternately, the signal strength of a first pilot signal transmitted by the first base station is measured at the mobile station. A handoff request message is then sent to the second base station when the measured signal strength of the first pilot signal becomes less than a second predetermined level, thereby mobile station communication to be established. The provision of a voice link between the mobile switching control stations allows for the forwarding of an existing connection between the first and second cellular systems, and enables the performance of soft intersystem handoffs.
In a cellular communications network in which a network user communicates through a mobile station with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a code division multiple access (CDMA) cellular communications network in which a user of a mobile station communicates with another network user via at least a first base station using spread spectrum communication signals, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said first switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which a user of a mobile station communicates with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which a user of a mobile station communicates with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which a user of a mobile station communicates with another network user via at least a first border base station included within a first set of base stations, said network including first and second mobile switching control stations for respectively controlling communications through said first and a second set of base stations, said first set of base stations including a number of border base stations adjacent said second set of base stations, a method for directing communications between said mobile station user and said first and second sets of base stations comprising the steps of:
In a cellular communications network in which information signals are communicated between a user of a mobile station and another network user communicate via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a system for directing communications between said mobile station user and said first and second base stations comprising:
In a code division multiple access (CDMA) cellular communications network in which spread spectrum information signals are communicated between a user of a mobile station and another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said first switching control station, a system for directing communications between said mobile station user and said first and second base stations comprising:
In a code division multiple access (CDMA) cellular communications network in which spread spectrum information signals are communicated between a user of a mobile station and another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a system for directing communications between said mobile station user and said first and second base stations comprising:
In a code division multiple access (CDMA) cellular communications network in which spread spectrum information signals are communicated between a mobile station user and another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said first switching control station, a system for directing communications between said mobile station user and said first and second base stations comprising:
In a cellular communications network in which a mobile station user communicates over a first frequency band with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which a mobile station user communicates over a first frequency band with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said first switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which a mobile station user communicates with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station operative over a first frequency band and through a second base station connected to said second switching control station operative over a second frequency band, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
In a cellular communications network in which information signals are communicated between a mobile station user and another network user via at least a first base station operative over a first frequency band, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station operative over a second frequency band, a system for directing communications between said mobile station user and said first and second base stations comprising:
In a cellular communications network in which a mobile station user communicates with another network user via at least a first base station, said network including first and second mobile switching control stations for respectively controlling communications through said first base station connected to said first switching control station and through a second base station connected to said second switching control station, a method for directing communications between said mobile station user and said first and second base stations comprising the steps of:
Dependencies are inferred from the claim text.