# US 9,521,168 B2 · Method for managing records in an IMS network, and S-CSCF server implementing said method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,521,168 B2 - Document ID: US9521168B2 - Status: Granted - Kind: B2 - Application number: 13/636,593 - Filed: 2011-03-15 - Published: 2013-01-17 - Granted: 2016-12-13 - Earliest claimed: 2010-03-23 - Assignees: France Telecom - Applicants: Bertrand Bouvet - Inventors: Bertrand Bouvet - Web page: https://patentgrep.com/patent/US9521168B2 ## CPC - H04L 65/1016: IP multimedia subsystem [IMS] - H04L 65/1073: Registration or de-registration - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) ## Abstract A method and apparatus are provided for management of registrations in an IMS network. The method includes: creating, for a given public identity, at least two registration queues, each one being associated with a registration policy; receiving a registration message sent by a terminal having the public identity; and assigning one of the registration queues to the terminal on the basis of a field included in the message. ## Claims ### Claim 1 A method for management of registration records in an IMS network, the method comprising: a step of creating, for a given public identity, at least two registration queues, each one being associated with a respective registration records management policy and a terminal type parameter; a step of a server device receiving a registration message sent by a terminal among a plurality of terminals having said public identity; a step of the server device assigning one of said registration queues to said terminal on the basis of the terminal type parameter included in a field of said message; and a step of the server applying the registration records management policy associated with the assigned registration queue, the management policy defining a policy on which the terminal is registered in the queue, once the queue is assigned. ### Claim 2 (depends on 1) The method according to claim 1, wherein said registration records management policy associated with a given registration queue is chosen from amongst: a first policy for which no monitoring is carried out with regard to a number of registrations that can be registered in said queue; a second policy defining a limit number of registrations in said queue, the latter being managed according to a method of a FIFO type; a third policy consisting in rejecting any request for registration in said queue, beyond a limit number of registrations in said queue; a fourth policy comprising rejecting the terminal generating the least traffic over the network from said queue; a fifth policy comprising rejecting the terminal from said queue whose parameter q, defined in the document RFC3261 of the IETF, is the smallest. ### Claim 3 (depends on 2) The method according to claim 2, wherein one of said registration queues is of a FIFO type, said one of said registration queues being reserved for a terminal of a domestic gateway type and comprising at most one registration. ### Claim 4 (depends on 1) The method according to claim 1, wherein said at least one registration queue is associated with a value of registration duration specific to said queue. ### Claim 5 (depends on 1) The method according to claim 1, comprising a step of downloading, by an S-CSCF server, from an HSS server, a configuration file for at least one registration queue associated with said public identity, said configuration file comprising, for each of said registration queues: a size of said registration queue; a registration records management policy associated with this queue; the terminal type parameter allowing said registration queue to be assigned to a terminal, and a value of registration duration specific to said queue. ### Claim 6 An S-CSCF server comprising: a non-transitory computer-readable memory comprising instrucitons stored thereon; a processor configured by the instructions to perform acts of: creating, for a given public identity, at least two registration queues, each one being associated with a respective registration records management policy and a terminal type parameter; receiving a registration message sent by a terminal among a plurality of terminals having said public identity; and assigning one of said registration queues to said terminal on the basis of the terminal type parameter included in a field included in said message; and applying the registration records management policy associated with the assigned registration queue, the management policy defining a policy on which the terminal is registered in the queue, once the queue is assigned. ### Claim 7 Non-transitory recording media readable by a computer on which a computer program is recorded comprising instructions for execution of a method for management of registration records in an IMS network, the instructions comprising: instructions configured to create, for a given public identity, at least two registration queues, each one being associated with a respective registration records management policy and a terminal type parameter; instructions configured to receive a registration message sent by a terminal among a plurality of terminals having said public identity; instructions configured to assign, with the computer, one of said registration queues to said terminal on the basis of the terminal type parameter included in a field of said message; and instructions configured to apply the registration records management policy associated with the assigned registration queue, the management policy defining a policy on which the terminal is registered in the queue, once the queue is assigned.