Method and apparatus for locating a radiotelephone within a cellular system
First Claim
1. A method of operating a radiotelephone (RT) within a cellular telecommunication system (CTS) having a unique system identification (SID), a plurality of land stations configured to communicate with said RT, a plurality of cells defining the transmit/receive range of said land stations, a plurality of local regions defined by the area associated with one or more of said cells, and a cordless base station configured to communicate with said RT, said method comprising the steps of:
- receiving an intrasystem local region identification signal at said RT, said intrasystem local region identification signal being transmitted by one of said land stations;
comparing said received intrasystem local region identification signal with one or more local region identification codes at said RT; and
initiating communication between said RT and said cordless base station in response to said comparing step when said received intrasystem local region identification signal matches one of said local region identification codes.
2 Assignments
0 Petitions
Accused Products
Abstract
A cellular telecommunication system (CTS) is provided that supports the operation of a radiotelephone (RT) in cellular and cordless modes. The CTS includes operating features that are dependent upon the intrasystem location of the RT. The CTS includes a mobile telephone switching office, a plurality of land stations, a plurality of cells, a plurality of zones defined by one or more cells, a plurality of local regions defined by one or more cells, and a cordless base station located within one of the cells. The land stations transmit zone identification (ZNID) signals and local region identification (LRID) signals, which the RT receives and compares to one or more ZNID codes and one or more LRID codes, respectively. The RT displays its intrasystem billing zone location and initiates communication with the cordless base station in response to the received ZNID and LRID signals, respectively.
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Citations
10 Claims
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1. A method of operating a radiotelephone (RT) within a cellular telecommunication system (CTS) having a unique system identification (SID), a plurality of land stations configured to communicate with said RT, a plurality of cells defining the transmit/receive range of said land stations, a plurality of local regions defined by the area associated with one or more of said cells, and a cordless base station configured to communicate with said RT, said method comprising the steps of:
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receiving an intrasystem local region identification signal at said RT, said intrasystem local region identification signal being transmitted by one of said land stations; comparing said received intrasystem local region identification signal with one or more local region identification codes at said RT; and initiating communication between said RT and said cordless base station in response to said comparing step when said received intrasystem local region identification signal matches one of said local region identification codes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A radiotelephone (RT) for operation within a cellular telecommunication system (CTS) having a unique system identification (SID), a plurality of land stations configured to communicate with said RT, a plurality of cells defining the transmit/receive range of said land stations, a plurality of local regions defined by the area associated with one or more of said cells, and a cordless base station configured to communicate with said RT, said RT comprising:
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a receiver for receiving an intrasystem local region identification signal, said intrasystem local region identification signal being transmitted by one of said land stations; a data storage element for storing one or more local region identification codes; and a control circuit having means for comparing said received intrasystem local region identification signal with said one or more local region identification codes, said control circuit being connected to said receiver and to said data storage element; and a transmitter for initiating communication between said RT and said cordless base station in response to said control circuit when said received intrasystem local region identification signal matches one of said local region identification codes. - View Dependent Claims (10)
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Specification