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 systems, said first GPRS HLR emulation component providing a GPRS HLR interface to a mobile station instead or an HLR in the GPRS system, the mobile station having wireless communications supplied by the second wireless system and having a home GPRS registration;
a second MSC/VLR emulation component adapted for connection to an HLR node of said second wireless system that utilizes a technology family being one of analog cellular, time division multiple access cellular, and code division multiple access cellular;
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, the message translation component translating a first HLR service request from the mobile station that is of a form compatible with the first wireless system into a second HLR service request that is of a form compatible with the second wireless system;
the second MSC/VLR emulation component transmitting the second HLR service request to an HLR component of the second wireless system for servicing the second request.
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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
14 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 systems, said first GPRS HLR emulation component providing a GPRS HLR interface to a mobile station instead or an HLR in the GPRS system, the mobile station having wireless communications supplied by the second wireless system and having a home GPRS registration;
a second MSC/VLR emulation component adapted for connection to an HLR node of said second wireless system that utilizes a technology family being one of analog cellular, time division multiple access cellular, and code division multiple access cellular;
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, the message translation component translating a first HLR service request from the mobile station that is of a form compatible with the first wireless system into a second HLR service request that is of a form compatible with the second wireless system;
the second MSC/VLR emulation component transmitting the second HLR service request to an HLR component of the second wireless system for servicing the second request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. 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, comprising the steps of:
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receiving a request from the second wireless system for routing information required to deliver a call to said mobile station that has a home registration in the second wireless system where the second wireless system is one of analog cellular, time division multiple access cellular, and code division multiple access cellular;
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, in response to said determining step determining that the mobile station has a GPRS-only attachment to the first GPRS wireless system, an indication to said second wireless system indicating that said mobile station is unreachable. - View Dependent Claims (9, 10, 11, 12)
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13. 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 comprising the steps of:
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receiving at the second wireless system a request to deliver a call to said mobile station, said mobile station having a home registration in the second wireless system and having initially a GPRS-only attachment to the GSM/GPRS wireless system, the second wireless system being one of analog cellular, time division multiple access cellular, and code division multiple access cellular;
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, in response to said determining step determining that the mobile station has a GPRS-only attachment to the first GPRS wireless system, an indication to said second wireless system indicating that said mobile station is unreachable. - View Dependent Claims (14)
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Specification