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73 results about "Initial filter criteria" patented technology

The Initial Filter Criteria is the grouping between a Trigger Point (the logical expression matching a message) and an Application Server. The absence of a Trigger Point in an Initial Filter Criteria indicates that the message should always be forwarded to the respective Application Server.

CDMA (Code Division Multiple Access) business nested method and system based on IMS (IP Multimedia Subsystem) network

The invention discloses a CDMA (Code Division Multiple Access) business nested method and system based on an IMS (IP Multimedia Subsystem) network. The CDMA business nested method comprises the following steps: a core network of a C-network obtains information signed by users signed in the C-network and triggers calls to an anchoring business platform according to the signed information; the anchoring business platform caches calling party numbers and called party numbers of the calls and distributes temporary local numbers for the calls; the core network routes the calls to an MGCF (Media Gateway Control Function) module of the IMS network of a user attribution place according to the temporary local numbers; the MGCF module obtains the called numbers of the calls from the anchoring business platform and routes the calls to a S-CSCF (Serving-Call Session Control Function) module; the S-CSCF module sequentially triggers the calls to corresponding business platforms according to iFC (Initial Filter Criteria) information signed by the users in the IMS network and a priority order; and after the business platforms process the calls, the business platforms route the calls to a target network or interacts with the MGCF so as to land the calls. According to the CDMA business nested method, the coming and going calls of the C-network user can be routed to the IMS network so as to realize the nested triggering of multiple services.
Owner:CHINA TELECOM CORP LTD

Method and system for encrypting/ decrypting IP (Internet Protocol) short messages based on SMS (Short Messaging Service) over IMS (IP Multimedia Subsystem)

ActiveCN104618898AImplement encryption and decryption functionsLow running costSecurity arrangementComputer hardwareCiphertext
The invention provides a method for encrypting/ decrypting IP short messages based on SMS over IMS; the method comprises the steps: when LTE (Long Term Evolution) users send and receive IP short messages in the IMS region in an SMS over IMS manner, the short messages are encrypted short messages, the content parts of which are ciphertexts; an IP short message encrypting and decrypting centre of the users finishes the encryption and decryption at the network side and then returns the IMS core network to finish the follow-up route at the end of the encryption and decryption. The corresponding technical solution is provided by analyzing the technical feature of the SMS over IMS and deeply analyzing key problems; the coordination of user registration management and user's secret key in the registration process is realized by the iFC (Initial Filter Criteria) triggering mechanism of the IMS and the encrypting and decryption functions of the short message contents in the IP short messaging service process are realized; the coordination of the terminal side to the encrypted and decrypted secret key is realized and the function of the short message content from encryption/decryption to representation on user's interface is realized by developing new terminal application software; the scheme can be implemented without modifying the present network equipment and the cost of operation and maintenance is lower.
Owner:EASTERN COMM

Method and system for anchoring service routing in IP (Internet protocol) multimedia subsystem

The invention discloses a method and a system for anchoring service routing in an IP multimedia subsystem. The method comprises correlating a first service provided by a non-IMS (IP multimedia subsystem) network with a special domain name, and in an IMS network, setting the AS (application server) address parameters in an iFC (initial filter criteria) triggering the first service as a corresponding special domain name; when a CSCF (call session control function) in the IMS network receives a calling request message to trigger the first service, filling the special domain name into the routing field of the calling request message, and based on special domain name analysis, sending the calling request message to a unified media gateway. Based on the correspondence between the special domain name and a service triggering code of the first service, the unified media gateway obtains the service triggering code of the first service and inserts the service triggering code before the called number of the calling request message to route the calling request message to a corresponding SCP (signaling control point) in the non-IMS network. The method and system for anchoring service routing in the IP multimedia system achieves anchoring of the service routing from the IMS network to the non-IMS network, and a user can use the service of the non-IMS network through access to the IMS network in a service triggering mode.
Owner:CHINA TELECOM CORP LTD

Multi-service triggering method based on extended initial filter criteria in IMS network

InactiveCN103812839AImprove the efficiency of multi-service triggeringImprove service qualityTransmissionSession Initiation ProtocolQuality of service
The invention discloses a multi-service triggering method based on an extended initial filter criteria in an IMS (IP Multimedia Subsystem) network. The multi-service triggering method comprises three operations steps of (1) extending iFC (initial Filter Criteria) by following an iFC UML (Unified Modeling Language) model defined in 3GPP TS ( 3rd Generation Partnership Project Technical Specification) 29.228 standards, and defining the extended iFC as e-iFC, (2) managing a multi-service triggering identification with a Route header in an SIP (Session Initiation Protocol) message, orderly adding services needing to be triggered to the Route header of the SIP message by an S-CSCF (Serving Call Session Control Function) according to the priorities of SIP URLs (SIP Uniform Resource Locators) and then triggering an initial SIP message to the service having the highest priority, and (3) executing a multi-service triggering method e-MSTA (electronic-Multicast Spanning Tree Algorithm) based on the e-iFC by virtue of the Route header in the SIP message and based on the e-iFC. The multi-service triggering method is capable of effectively reducing the signaling traffic of the S-CSCF by optimizing the multi-service triggering flow of the existing 3GPP, and as a result, the throughput capacity of the whole system is increased, the multi-service triggering efficiency of an IMS (IP Multimedia Subsystem) network, and in the meantime, session establishment time delay is remarkably reduced and the service quality of the IMS network is improved.
Owner:SUN KAISENS BEIJING TECH

IMS (IP multimedia subsystem)-based service triggering method and IMS-based service triggering system

The invention provides an IMS-based service triggering method, which comprises the following steps: firstly, downloading user subscription data from an HSS (home subscriber server) by an S-CSCF (serving-call-session control function) when UE (user equipment) logins and saving locally, wherein iFC (initial filter criteria) information of subscription contains application server information which needs to be triggered and SPT (service point trigger) conditions for triggering application servers, and SPT contains user service information; secondly, subscribing for the specific service of a user from specific application servers by the S-CSCF after the UE logins successfully, and saving locally the user service information returned by the specific application servers; finally, deciding whether the logics of the application servers are triggered or not according to the matched user service information and SPT conditions after a call request is received by the S-CSCF. The invention also discloses an IMS-based service triggering system. According to the IMS-based service triggering method and the IMS-based service triggering system provided by the invention, the application servers are triggered in a matching manner according to services subscribed by the user, and therefore service triggered logics are enriched, and different demands of operators are met; moreover, the IMS-based service triggering method and the IMS-based service triggering system have no dependency on terminals.
Owner:NANJING UNIV OF INFORMATION SCI & TECH
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