Interworking and interoperability of GPRS systems with systems of other technology families
First Claim
1. An interworking and interoperability function for use in joining a GPRS wireless system with a second wireless system of a different technology family comprising:
- a first GPRS HLR emulation component adapted for connection to said GPRS wireless system;
a second MSC/VLR emulation component adapted for connection to said second wireless system; and
a message translation component operatively connected to said first and second emulation components and adapted to translate messages received at one of said emulation components into a form compatible with the other of said emulation components.
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Accused Products
Abstract
A GPRS interworking and interoperability function (IIF) is interposed between a serving GSM/GPRS wireless system and a second wireless system of a different technology family to allow a mobile station homed to the second wireless system to operate in the GSM/GPRS system. The IIF executes or emulates the behavior of a GPRS HLR when communicating with the GSM/GPRS system, and executes or emulates the behavior of an MSC/VLR of the home system technology family when communicating with the home system. When a mobile station registers in the serving system, the MSC/VLR portion of the IIF transmits a registration notification message to the home system HLR specifying the address of an associated SGSN as though it were an MSC.
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Citations
20 Claims
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1. An interworking and interoperability function for use in joining a GPRS wireless system with a second wireless system of a different technology family comprising:
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a first GPRS HLR emulation component adapted for connection to said GPRS wireless system;
a second MSC/VLR emulation component adapted for connection to said second wireless system; and
a message translation component operatively connected to said first and second emulation components and adapted to translate messages received at one of said emulation components into a form compatible with the other of said emulation components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. For use with an interworking and interoperability function joining a first GPRS wireless system with a second wireless system of a different technology family, a method of processing a registration by a mobile station served by said first GPRS wireless system and homed to said second wireless system comprising the steps of:
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a. receiving from said first GPRS wireless system a first message indicating a location update of a mobile station in said first GPRS wireless system;
b. translating said first message into a registration notification message compatible with said second wireless system; and
c. transmitting said registration notification message to said second wireless system. - View Dependent Claims (12, 13, 15, 16, 17, 18, 20)
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14. For use with an interworking and interoperability function joining a first GPRS wireless system with a second wireless system of a different technology family, a method of processing a request to deliver a call to a mobile station having a GPRS-only attachment to said first GPRS wireless system and homed to said second wireless system, comprising the steps of:
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receiving a request for routing information required to deliver a call to said mobile station;
determining that said call cannot be delivered to said mobile station by virtue of the mobile station'"'"'s GPRS-only attachment to said first GPRS wireless system; and
transmitting an indication to said second wireless system indicating that said mobile station is unreachable.
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19. For use with an interworking and interoperability function joining a first GSM/GPRS wireless system with a second wireless system of a different technology family, a method of processing a request to deliver a call to a mobile station having initially a GPRS-only attachment to said first GSM/GPRS wireless system and homed to said second wireless system, comprising the steps of:
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receiving a request for routing information required to deliver a call to said mobile station;
determining that said call cannot be delivered to said mobile station by virtue of the mobile station'"'"'s GPRS-only attachment to said first GSM/GPRS wireless system; and
transmitting an indication to said second wireless system indicating that said mobile station is unreachable.
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Specification