Importance

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Abstract

The present invention provides an H.323-based mobility system for real-time mobile multimedia communications and conferencing over packet-based networks. The H.323-based mobility system includes at least one H.323 Mobile Entity, arranged to send an H.323 call, that, upon detecting at least one H.323 mobility gatekeeper that supports H.323 mobility services in a Location Area, communicates with a Home Location Database, moves from the first Location Area to a second Location Area, registers locally, and sets up a mobile H.323-based call; at least one Base Station, for receiving/sending the location information from/to a Mobile Switching Center, and for receiving/sending calls from/to the Mobile Switching Center for forwarding to a callee Mobile/Nonmobile Entity; the Home Location Database, arranged to receive and store Mobile Entity location information and send it to a first Visitor Location Database, and upon the H.323 Mobile Entity moving from one Location Area to another Location Area, for receiving update location information and sending it to a second Visitor Location Database; the first Visitor Location Database, for storing and updating the location information; the first Mobile Switching Center, for, where the callee Mobile/Nonmobile Entity is in the first Location Area, setting up a call from the Mobile Entity to the callee Mobile/Nonmobile Entity; the second Visitor Location Database, for storing and updating the location information; and the second Mobile Switching Center, for, where a callee Mobile/Nonmobile Entity is in the second Location Area, setting up a call from the Mobile Entity to the callee Mobile/Nonmobile Entity.

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First Claim