Source: http://www.google.com/patents/US7848767?dq=6272333
Timestamp: 2014-09-03 00:13:33
Document Index: 551527622

Matched Legal Cases: ['Application No. 06844747', 'application No. 06844747', 'Application No. 06844747', 'Application No. 03', 'application No. 04', 'Application No. 06844747']

Patent US7848767 - Methods and systems for migrating between application layer mobile signaling ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsMethods and systems for migrating between application layer mobile signaling protocols are disclosed. For subscribers of multiple protocols, the registration status is tracked in one or more of the protocols. When a location query message for a subscriber of multiple protocols is received, it is determined...http://www.google.com/patents/US7848767?utm_source=gb-gplus-sharePatent US7848767 - Methods and systems for migrating between application layer mobile signaling protocolsAdvanced Patent SearchPublication numberUS7848767 B2Publication typeGrantApplication numberUS 10/405,859Publication dateDec 7, 2010Filing dateApr 2, 2003Priority dateOct 15, 2002Fee statusPaidAlso published asUS20040219935, WO2004036766A2, WO2004036766A3Publication number10405859, 405859, US 7848767 B2, US 7848767B2, US-B2-7848767, US7848767 B2, US7848767B2InventorsThomas M. McCann, Raghavendra G. RaoOriginal AssigneeTekelecExport CitationBiBTeX, EndNote, RefManPatent Citations (130), Non-Patent Citations (72), Referenced by (3), Classifications (14), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetMethods and systems for migrating between application layer mobile signaling protocolsUS 7848767 B2Abstract Methods and systems for migrating between application layer mobile signaling protocols are disclosed. For subscribers of multiple protocols, the registration status is tracked in one or more of the protocols. When a location query message for a subscriber of multiple protocols is received, it is determined whether the subscriber is registered according to the tracked protocol. If the subscriber is registered according to the tracked protocol and the request originated from an MSC of the tracked protocol, the message is routed to an HLR of the tracked protocol. If the subscriber is not registered according to the tracked protocol, a response is formulated to the first message. The response optionally includes a prefix that directs the originating MSC to route the call to an MSC of the non-tracked protocol.
RELATED APPLICATIONS This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/418,881, filed Oct. 15, 2002, the disclosure of which is incorporated herein by reference in its entirety.
TECHNICAL FIELD The present invention relates to methods and systems for migrating between application layer mobile signaling protocols. More particularly, the present invention relates to methods and systems for routing and processing signaling messages for calls and short message service (SMS) messages to mobile subscribers in a network where some subscribers have two or more different application layer mobile signaling protocol subscriptions and the same directory number is used to contact the subscriber in each subscription.
RELATED ART In mobile communications networks, a variety of different mobile signaling protocols are used to route calls, obtain subscriber information, and deliver SMS messages to mobile subscribers. For example, in North America, American National Standards Institute (ANSI)-41 or Interim Standard (IS)-41 is the dominant application layer mobile signaling protocol. In Europe, the Global System for Mobile communications (GSM) protocol is the dominant application layer mobile signaling protocol. GSM is also being increasingly used in North America.
DISCLOSURE OF THE INVENTION The present invention includes methods and systems for routing and processing signaling messages in a network with dual mode subscribers of different application layer mobile signaling protocols. As used herein, the term �dual mode subscriber� refers to a mobile subscriber with two different application layer mobile signaling protocol subscriptions where the same directory number is used to contact the subscriber via each subscription. For example, a dual mode subscriber may have an IS-41 phone and a GSM phone with the same directory number being used to contact both phones. Alternatively, the subscriber may have a single physical device capable of operating in IS-41 and GSM modes.
A method for processing signaling messages relating to calls to dual mode subscribers according to the present invention may include tracking the registration status of a dual mode subscriber in one of the application layer mobile signaling protocols of the subscriber (hereinafter, �the tracked application layer mobile signaling protocol�) and using the current registration status to route calls and SMS messages to the subscriber in a manner that gives priority to the tracked application layer mobile signaling protocol. For example, location query messages for dual mode subscribers may be processed in a manner that gives priority to the tracked application layer mobile signaling protocol. If a mobile switching center (MSC) of the tracked application layer mobile signaling protocol sends a location query message for a dual mode subscriber, a routing node of the present invention may check the registration status of the dual mode subscriber. If the subscriber is not registered according to the tracked application layer mobile signaling protocol, the routing node may formulate a location query response message with a prefix corresponding to a mobile switching center of the non-tracked application layer mobile signaling protocol and send the location query response to the requesting mobile switching center. The prefix in the location query response message may trigger the requesting mobile switching center to route the call to the mobile switching center of the non-tracked application layer mobile signaling protocol.
DETAILED DESCRIPTION OF THE INVENTION In one exemplary embodiment of the invention, a number migration signaling platform may track the registration status of dual mode subscribers of different application layer mobile signaling protocols in one of the application layer mobile signaling protocols and process and route signaling messages based on the tracked registration status. A number migration signaling platform may be implemented in a signaling message routing node for routing messages between MSCs, HLRs, VLRs, and SMSCs. FIG. 1 illustrates an exemplary network architecture in which a number migration signaling platform according to the present invention may be used. Referring to FIG. 1, number migration signaling platforms 100 are provided to route and process mobile call signaling messages between other mobile network elements. Each number migration signaling platform 100 may include a location query routing and subscriber registration status database 102 for tracking registration status of dual mode subscribers in one application layer mobile signaling protocol, for routing location query messages to the appropriate destination using the tracked registration status, and for formulating location query response messages. The functionality of number migration signaling platforms 100 and databases 102 will be described in more detail below.
DPC/
9194938000
1-1-1/4
1-1-2/4
9194938001
9194938002
GSM-only,
9194938003
9194938004
IS-41 only
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