SIP-based multimedia communication system capable of providing mobility using lifelong number and mobility providing method
First Claim
1. An SIP (Session Initiation Protocol)-based multimedia communication system, comprising SIP network service domains that provide mobility based on a logical SIP identifier allocated to each of users, and a global domain that integratively manages the SIP network service domains and allocates a global SIP identifier that is a lifelong number to each user to provide user-centered mobility, wherein each of the SIP network service domain comprises:
- a user agent that transmits request/response messages between users to set up, correct, and cancel a call, and when contact information of the user agent is registered and registration of the contact information is cancelled, requests to be informed of a state change in registration information; and
an SIP network server that carries out message routing between user agents and informs of the contact information of the user agents during message routing.
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Abstract
The SIP-based multimedia communication system for providing mobility using lifelong numbers provides mobility through SIP network service domains and a global domain. The SIP network service domain comprises a user agent and an SIP network server. The user agent transmits request/response messages between users to set up, correct, and cancel calls, and when contact information of the user agent is registered and registration of the contact information is cancelled, requests to be informed of state changes in registration information. The SIP network server performs message routing between user agents and informs the contact information of the user agents during message routing. The global domain manages the SIP network service domains and allocates global SIP identifiers, that is, lifelong numbers to users to provide user-centered mobility.
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Citations
20 Claims
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1. An SIP (Session Initiation Protocol)-based multimedia communication system, comprising
SIP network service domains that provide mobility based on a logical SIP identifier allocated to each of users, and a global domain that integratively manages the SIP network service domains and allocates a global SIP identifier that is a lifelong number to each user to provide user-centered mobility, wherein each of the SIP network service domain comprises: -
a user agent that transmits request/response messages between users to set up, correct, and cancel a call, and when contact information of the user agent is registered and registration of the contact information is cancelled, requests to be informed of a state change in registration information; and
an SIP network server that carries out message routing between user agents and informs of the contact information of the user agents during message routing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A mobility providing method in an SIP-based multimedia communication system that includes SIP network service domains including user agents and providing mobility based on a logical SIP identifier allocated to each user, and a global domain integratively managing the SIP network service domains and allocating a global SIP identifier to each user to provide user-centered mobility, comprising:
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a) an SIP network server of the global domain receiving an SIP message for SIP-based multimedia communication;
b) mapping global SIP identifier of a communication peer to registered logical SIP identifiers, which is included in the received SIP message; and
c) transmitting the received SIP message to an SIP network server of the SIP network service domains corresponding to the mapped logical SIP identifiers. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification