Zte Corporation

Xi'an Zhongxing New Software Co., Ltd.

Zhenwu Hao

Jiyan Cai

Jun Wang

Yan Zhang

Qian Wang

Hong Jiang

Wei Wang

Zhenhua Xie

Shilin You

Zhendong Li

Zhiming Yu

Baoguo Xie

Changle Zou

Tong Rui

Tao Fu

Mo Sun

Quanjun Tao

Min Shen

Zhaoming Ding

Yongsheng Hu

Zhifeng Chen

Congjie Mao

Jingwen Zhao

Xuechuan Hu

The present disclosure provides a method and an apparatus for processing a service request. The method includes: sending a query request for querying a domain name of a server to a DNS; receiving a query response returned according to the query request, where the query response carries a first identifier of an IDGW; sending a service request to the IDGW according to the first identifier, where the service request is used for the IDGW to convert the first identifier into a second identifier of the server and forward the service request to the server according to the second identifier; and receiving a service response message returned from the server in response to the service request.

Method and apparatus for processing service request

Provided are a method and device for sending message. The method includes that: a mapping table is established; a message is received from a receiver; the mapping table is searched to obtain a Route Identification (RID) of an Access Service Node (ASN) of a sender corresponding to the message according to the message; and the message is sent to the ASN according to the found RID of the ASN. By the technical solution, the problem of non-uniformity of access manners for uplink and downlink data streams in a related technology is solved, and a proper access manner can be selected for the downlink data stream.

Method and device for sending message

The disclosure discloses a method and an apparatus for realizing load balance in a DHT network, wherein the method comprises: determining the quantity Z of first virtual identifiers according to the node planning of the DHT network and a preset threshold of load unbalance degree, wherein Z is a natural number; equally dividing the whole load space of the DHT network into Z portions, and each portion of the load space is respectively identified by a different first virtual identifier; allocating the Z first virtual identifiers to each node according to the ability of each node so that each node is in charge of the load space corresponding to the first virtual identifier allocated to the node. The disclosure can reduce workload for managing and transferring virtual identifiers while realizing data storage load balance in the DHT network.

Method and apparatus for realizing load balance in distributed Hash table network

Provided are a method and signaling gateway for establishing an optimized media path applied in an IMS network. The method includes: during the process of forwarding a session description protocol (SDP) request and response, when receiving a SDP response of a first session, a first ALG judging that there is an optimized media path between itself and a second ALG, then when sending the SDP response of the first session, including indication information in the send SDP response; the first ALG sending a SDP request with the target being the second ALG; and after having received the SDP response of the first session including the indication information or after having received the SDP request with the target being the second ALG and the SDP response of the first session including the indication information, the second ALG sending the SDP response of the first session.

Method of establishing optimized media path and signaling gateway for implementing this method

A method is provided for acquiring a user location including, when it is required to acquire a current user location, a Location Service Client (LSC) transmitting a location service request carrying a user bearer identifier of user to a Bearer Mapping Function (BMF) through a Gateway Mobile Location Centre (GMLC), and after receiving the location service request, the BMF searching for a corresponding Interworking Packet Access Gateway (iPAG) according to the user bearer identifier, and after obtaining user location information from the iPAG, the BMF returning the user location information to the LSC through the GMLC or instructing the GMLC to obtain the user location information from the iPAG.

System and method for acquiring user location through user bearer identifier

A de-registration method and system for IP Multimedia Subsystem (IMS) centralized service are provided in the present invention, wherein the method comprises: a Circuit Switched User Equipment (CS UE) moves from a source enhanced Mobile Switch Center Server (eMSC Server) into the control area of a target Mobile Switch Center Server (MSC Server); during a location cancelling process in which the CS UE changes the MSC Server to which it is attached, the source eMSC Server starts up delay timing after receiving a location cancelling request; when the delay time is reached, the source eMSC Server performs the de-registration of the IP Multimedia Subsystem (IMS) instead of the CS UE. The method and system of the present invention ensure that the de-registration request of the source eMSC Server arrives at the Serving Call Session Control Function (S-CSCF) later than the registration request of the target MSC server, so as to avoid unnecessary redundant signaling and improve the system processing efficiency.

De-registration method and system for IP multimedia subsystem centralized service

The present invention provides a method, a device, and a system for realizing a registration mechanism of an IP multimedia subsystem. In the above method, a S-CSCF obtains a private user identity and a public user identity of CS UE and characteristic information of a MSC Server from a received request message, wherein the request message includes a registration request or a de-registration request; and then matches the obtained private user identity, public user identity, and characteristic information with existing registration binding relationships. If the match is successful, an operation indicated by said request message is performed on the successfully matched registration binding relationship. Based on the solution proposed in the present invention, the logic of the registration service can be ensured to be normal.

Method, system, and device for realizing registration mechanism of IP multimedia subsystem

A method for switching the session control path of IMS centralized services is provided. When the condition for switching the session control path is satisfied during the ICS session based on the first session control path, the following steps are performed: one party of the ICS UE and ICCF of the ICS session transmits the request of switching the session control path to the other party; the receiving party identifies the ICS session corresponding to the request, and transmits an acknowledgement response to the transmitting party; and the ICCF and ICS UE set the session control path corresponding to the identified ICS session as the second session control path and transfer the subsequent session control information associated with the ICS session via the second session control path; wherein the first or second session control path is one of the PS session control path and the CS session control path.

Method for switching the session control path of IP multimedia core network subsystem centralized service

A realizing method of emergency registration is disclosed. When the user equipment in the visited network initiates an emergency registration request, the method comprises the following steps: after P-CSCF of the visited network receives the emergency registration request sent from the user equipment, it forwards the message to S-CSCF of the home network. The S-CSCF sets the emergency registration expiration time according to the setting policy for emergency registration expiration time, includes it into the emergency registration response sent to the P-CSCF which retrieves the emergency registration expiration time from the emergency registration response and sends the message to the user equipment, which in turn retrieves the emergency registration expiration time from the emergency registration response. The factors of the setting policy for the emergency registration expiration time comprise: a type of the emergency call, the location information of the visited network and the location information of the user equipment.

Realizing method of emergency call registration

A method for realizing a single radio voice call continuity and a single radio voice call continuity system are disclosed. After a UE-establishes an IMS session with a remote leg through a PS network, wherein in the IMS session, signaling is anchored to an ICP and media is anchored to an AGW controlled by the ICP, the method is realized as follows: sending a handover request by a control net element of the PS network to an eMSC to request a handover of the IMS session to a CS network access mode; after receiving the handover request, preparing a media link resource by the eMSC for the UE-to communicate with the eMSC and sending a call request to the ICP; and controlling the AGW to correlate a media link established by the call request with a remote leg media link of the IMS session by the ICP. The method can effectively solve the problem existing in the prior art that the duration of interruption is too long, and improve user experience.

Method for realizing single radio voice call continuity and single radio voice call continuity system

A method is provided for realizing session transfer, comprising: a service continuity application server (SCC AS), after receiving a session transfer request, when judging that a state of a session needed to be transferred is in a held state, updating a remote leg by using a held state session state information, and notifying an enhanced mobile switching center (eMSC) that the state of the session needed to be transferred is the held state; and the eMSC completing a call setup of a target access network according to the held state. A system is also provided for realizing session transfer. The method and system can realize correct transfer of a held state voice session, realize correct service logic and improve user experience.

Method and system for realizing session handover

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 method for implementing call forwarding on user-determined user busy, including the following steps of: step 1: after receiving a session request routed by a CSCF from a calling side (), an IMS Circuit Switched Control Function (ICCF) on a called side establishing a call with a called terminal having IMS Centralized Service (ICS) capability (), and then the called terminal ringing (); step 2: sending, by the called terminal, a user-determined user busy message to the ICCF when a called user rejects the call (); and step 3: notifying, by the ICCF, a Telecom Application Server (TAS) that the called terminal is in a user-determined user busy state (), and the TAS initiating a procedure of call forwarding on user-determined user busy (). A method for releasing the established media resources resources and session is also provided.

Method for realizing user decision user busy forwarding

A method for implementing a chairman side conference service of an IP Multimedia Subsystem centralized service is disclosed. A non ICS UE has contracted a conference service and is currently in calls with multiple UEs. The method for implementing the conference service when the non ICS UE serves as a chairman UE comprises: the chairman UE originating a conference setup request to an eMSC; after receiving the request, the eMSC sending a session request message for setting up the conference service to a conferencing server according to the address of the conferencing server to which the chairman UE belongs; the conferencing server returning a success response message to the eMSC; after receiving the response, the eMSC inviting the UEs, which are currently in calls with the chairman UE, to participate in the conference, and returning a conference setup success message to the chairman UE after the participation is successful.

Method for implementing centralized service chairman side conference service of IP multimedia subsystem

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.

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Shenzhen, China

Zhenwu Hao