Zte Corporation

Zhiming Yu

Zhenwu Hao

Shilin You

Zhendong Li

Jiyan Cai

Jun Wang

Jinguo Zhu

Ying Hu

Lei Yu

Zhaoming Ding

Liping Geng

A method and a system for implementing CS domain paging are disclosed, applied in scenarios of performing CS domain paging for a called UE after ISR function is introduced in PS domain, and comprising: MSC/VLR only storing one Gs association; during CS domain paging, MSC/VLR sending a CS domain paging request message to the PS domain network element recorded in the Gs association in the MSC/VLR; after receiving the message, the PS domain network element initiating one or two CS domain paging procedures in the PS domain to transmit the CS domain paging to the called UE; or sending a paging response to the MSC/VLR directly without initiating CS domain paging. A method for transferring service information is also disclosed, applied in the scenarios that ISR function is activated in PS domain, and comprising: transmitting service message(s) between the ISR-associated PS domain network elements serving the UE to implement transfer of service information.

Method and system of circuit switched domain page realization, method of service realization

The present invention discloses an emergency service handover method which is applied in a single radio voice service system. A UE has established an emergency session between an IMS domain and an emergency call center via LTE/SAE network, wherein the emergency session is anchored to a service centralization and continuity application server, SCC AS, at a visited location. When MSC obtains information that the UE having established the emergency session needs to be switched to a CS domain, an enhanced MSC initiates a session establishment request to the visited SCC AS for performing a handover from the IMS domain to the CS domain on a service layer.

Emergency service handover method

A late call forwarding method in the IMS centralized service. During a call setting up, an ICCF receives a call request from the CSCF serving the called user, called session A, and the ICCF acquires a called user's roaming number and initiates a call to the called user. After receiving the call request, the VMSC serving the called user triggers the late call forwarding service according its determination. A CAMEL service is triggered when the VMSC initiates a call to the forwarding target. The VMSC exchanges messages with the ICCF and informs the ICCE about session associated information and the forwarding reason. When the ICCF determines that the forwarding is needed, it sends a response to the session A does not send the response message, after a telecom application server (TAS) receives the indication, the TAS initiates a regular forwarding service.

Late call forwarding method in IP multimedia core network subsystem centralized service

The present invention discloses a method for implementing a redirection service for UEs sharing a PUI in an IMS, comprising: when a UE in a PN registers at a PNM AS, the PNM AS fetching the UE Identity and establishing a corresponding relationship between the identity and the PUI; when determining to route an initial request message of a terminating call of a UE in the PN routed by an original S-CSCF to a configured UE sharing the PUI, the PNM AS adding the configured UE Identity into a redirected initial request message and sending it to the original S-CSCF which forwards the message to a redirection S-CSCF; and the redirection S-CSCF uniquely locating the configured UE according to the identity or both the identity and the PUI in the message. The present invention can redirect a session initial request to a configured UE sharing a PUI with other UEs.

Implementing method and system for UE redirection service of sharing PUI

A domain transferring method for the single radio voice call continuity, a UE accesses via an LTE/SAE network, and sets up an IMS session anchored at a VCC AS with a remote node; when an S-IWF receives a handover request used to transfer the session to make the session access from a CS domain, the method comprises: the LTE/SAE network sends a handover command to the UE, the UE sends a handover complete message to a target access device after receiving the handover command; after the UE sends the handover complete message, or after the S-IWF receives the handover complete message, a release session notification message is sent to a VCC AS; after receiving the session release notification message, the VCC AS releases the session resources of the session.

Growing community of inventors

Shenzhen, China

Zhiming Yu