CN103118407A - Method and system of achieving reverse-direction single stay service continuity - Google Patents
Method and system of achieving reverse-direction single stay service continuity Download PDFInfo
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Abstract
The invention discloses a method and a system of achieving reverse-direction single stay service continuity. A primary network base station system sends out a request message of combination switching of circuit switching (CS) and packet switching (PS) to a mobile switching center (MSC); the MSC sends out a switching request from the CS to the PS to a target network control entity, wherein the switching request from the CS to the PS carries PS domain information of the request message of the combination switching of the CS and the PS; the target network control entity builds a data forwarding tunnel according to the PS domain information; before user equipment (UE) accesses to a target network, the primary network base station system is to transmit received media data sent to the UE to a target network base station system through the data forwarding tunnel. The invention further discloses a system of achieving the reverse-direction single stay service continuity. According to the method and the system of achieving the reverse-direction single stay service continuity, discontinuity of a PS domain service before the UE accesses to the target network can be avoided, and continuity of the PS domain service is enabled to be guaranteed.
Description
Technical Field
The present invention relates to mobile communication technologies, and in particular, to a method and a system for implementing reverse single standby service continuity.
Background
An IP Multimedia Subsystem (IMS, IP Multimedia Core Network Subsystem) is an IP-based Network architecture proposed by the third Generation Partnership Project (3 GPP), which constructs an open and flexible service environment, supports Multimedia applications, and can provide rich Multimedia services for users.
In the IMS service system, the control layer and the service layer are separated, the control layer does not provide specific services, and only provides necessary functions of triggering, routing, charging and the like for the service layer.
The service triggering and control functions in the control layer are performed by a Call Session Control Function (CSCF). The call session control functions are divided into: three types of Proxy call session control function (P-CSCF), Interrogating call session control function (I-CSCF), and Serving call session control function (S-CSCF), where S-CSCF is the main responsibility and I-CSCF is optional.
The service layer is composed of a series of Application Servers (AS), which can provide specific service services, and the AS may be an independent entity or may exist in the S-CSCF.
And the control layer (S-CSCF) controls service triggering according to the subscription information of the user, calls the service on the AS and realizes the service function.
End-to-end Equipment in a session is called User Equipment (UE) and is responsible for interaction with a User, and some UEs have multiple network access modes, including network access through a Packet Switch (PS) domain of 3GPP, network access through a PS domain of other non-3 GPP, and even network access through a Circuit Switch (CS) domain.
If the CS network is configured with an enhanced Mobile switching center (eMSC), which provides a Session Initiation Protocol (SIP) interface to interact with the IMS network, the interaction of the IMS network with the CS network may be implemented by the eMSC.
For a UE with multiple Access modes, if the UE can only use one Access mode at a time, it is performing a Call service under the Access mode of the 2/3G network, because the Call service is provided by the CS domain in the 2/3G network, when the Access mode that the UE needs to change its use is accessed by a Long Term Evolution (LTE) network or a High Speed Packet Access (HSPA) network when the UE moves to another place, the UE and the network can provide a way that the Call service being performed by the UE is not interrupted, because the Call service is provided by the PS domain in the LTE or HSPA network, such a capability is called Continuity of switching a Voice service of a Single standby terminal from the CS domain to the PS domain, referred to as reverse Single standby service Continuity (rSRVCC, reverse Single Radio Voice Call Continuity), and correspondingly, if the UE moves from the LTE network or the HSPA network to the 2/3G network, it is called Single standby service Continuity, referred to as simply single standby service continuity (SRVCC).
The existing scenarios for realizing the continuity of the reverse single standby service are as follows: a call is established between UE-1 and UE-2, wherein UE-1 establishes a call through the CS domain of the 2/3G network, so that a CS media connection is connected to UE-1 in a call media path, and UE-1 has active PS services, so that UE-1 has an active PS service bearer connection. When the UE-1 moves to a PS domain that needs to change its used access mode to LTE or HSPA, the UE-1 implements a method of reverse single standby service continuity, as shown in fig. 1, including the following steps:
step 101: UE-1 establishes conversation with UE-2 through CS domain and original network CS domain control entity, namely Mobile Switching Center (MSC);
step 102: UE-1 sends measurement report to original network base station system to report cell signal intensity measurement information;
step 103: the original network base station system serving the UE-1 judges that the target network of the PS domain is more suitable for serving the UE-1 according to the signal intensity measurement information of each cell in the measurement report, and determines to execute the switching operation, and the original network base station system sends a CS domain switching request, such as a Handover required message, to the MSC;
step 104: the MSC receives the CS domain switching Request, and initiates a switching Request from the CS to the PS, such as sending a CS to PS Forward Relocation Request, to the target network control entity, such as a Mobile Management Entity (MME) or a GPRS service support node (SGSN);
step 105: the target network control entity sends a Request for acquiring a PS domain Context, such as a PDP Context Request message, to an original network data domain control entity, such as SGSN;
step 106: the original network data domain control entity returns PS domain context information, for example, PDPContext Response message is sent to carry PDP context;
step 107: a target network control entity sends a switching Request, such as a Handover Request message, to a target network base station system, such as an eNB or an RNC, and carries reserved bearing information;
step 108: the target network base station system performs resource reservation according to the reserved bearing information and returns a switching Response message to the target network control entity, such as a message of sending a Handover Response;
step 109: the target network control entity sends a CS to PS switching Response to the MSC, such as sending a CSto PS Forward Relocation Response message;
step 110: MSC sends switching Command, such as Handover Command message, to original network base station system, such as RNC or BSS;
step 111: the original network base station system sends a switching command to the UE-1, such as sending a Handover FromUTRAN message;
in this step, after the original network base station system sends the switching command, the received media data sent to the UE-1 are discarded, because the UE-1 disconnects the existing wireless connection after receiving the switching command, and the data cannot be sent to the UE-1.
Step 112: UE-1 receives the switching command, modulates the switching command to a target network PS domain and accesses the target network;
step 113: after accessing a target network, UE-1 sends a switching notification message, such as a Handover Notify message, to a target network base station system;
step 114: a target network base station system sends a switching notification message to a target network control entity;
step 115: the target network control entity updates the Bearer connection of the core network, for example, sends a Modify Bearer Request message to a target network service gateway, such as an SGW, so that the target network base station system establishes the Bearer connection with the target network service gateway;
step 116: the target network service gateway sends a message for updating the load to the data network gateway, for example, sends a Modify Bearer Request message, so that the load connection is established between the target network service gateway and the data network gateway;
therefore, IMS media connection 1 is established between UE-1 and UE-2, and UE-1 and the data network gateway establish PS service bearer connection through the target network base station system and the target network service gateway, so that UE-1 and UE-2 can continue to talk, and the PS service of UE-1 can continue to be carried out.
In the prior art, the PS service of UE-1 is already interrupted after step 111, and is not resumed until step 116, so that the PS service data of the user lacks integrity.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a method and a system for implementing reverse single standby service continuity, so that the continuity of PS service is guaranteed.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a method for realizing reverse single standby service continuity, which comprises the following steps:
the original network base station system sends a CS and PS combined switching request message to the MSC;
the MSC sends a CS-to-PS switching request to a target network control entity, wherein the CS-to-PS switching request carries PS domain information in the CS and PS combined switching request message;
the target network control entity establishes a data forwarding tunnel according to the PS domain information;
before the UE accesses the target network, the original network base station system forwards the received media data sent to the UE to the target network base station system through the data forwarding tunnel.
In the above solution, the CS and PS combined handover request message is:
information Element (IE) for PS handover message as CS handover message;
or the PS handover message is contained in a transparent storage information element (TransparentContainer IE) of the CS handover message;
or combining at least the IE related to the resource reservation information and the PS domain tunnel information in the PS switching message into the CS switching message as the IE of the CS switching message;
or at least the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message is contained in the transparent storage information element of the CS handover message.
In the above scheme, the target network control entity is an MME or an SGSN.
In the above scheme, the PS domain information at least includes resource reservation information and PS domain tunnel information in the PS handover message.
In the above solution, the establishment of the data forwarding tunnel by the target network control entity according to the PS domain information is: the target network control entity establishes a Direct Forwarding tunnel for the original network base station system and the target network base station system without establishing an indirect data Forwarding tunnel when the Direct Forwarding Path Availability information indicates that the original network base station system and the target network base station system can establish the Direct Forwarding tunnel according to the Direct Forwarding Path Availability information; and when the Direct forwarding path Availability information indicates that the original network base station system and the target network base station system cannot establish the Direct forwarding tunnel, establishing the indirect data forwarding tunnel for the original network base station system and the target network base station system.
In the above solution, the establishment of the data forwarding tunnel by the target network control entity according to the PS domain information is: the target network control entity directly establishes the indirect data forwarding tunnel according to the PS domain information carried by the received CS-to-PS switching request without judging whether the indirect data forwarding tunnel needs to be established.
In the foregoing solution, before the target network control entity establishes the data forwarding tunnel according to the PS domain information, the method further includes:
the target network control entity sends a request for acquiring the PS domain context to an original network data domain control entity; the original network data domain control entity returns the context information of the PS domain; a target network control entity sends a switching request to a target network base station system, and the switching request carries PS domain information; the target network base station system performs resource reservation according to the resource reservation information in the PS domain information and returns a switching response message to the target network control entity; the target network control entity sends a CS to PS handover response to the MSC.
The invention provides a system for realizing reverse single standby service continuity, which comprises: the system comprises an original network base station system, an MSC, a target network control entity and a target network base station system; wherein,
the original network base station system is used for sending a CS and PS combined switching request message to the MSC; after establishing a data forwarding tunnel and before accessing the UE to a target network, forwarding the received media data sent to the UE to a target network base station system through the data forwarding tunnel;
MSC, used for sending CS to PS switching request to target network control entity, the said CS to PS switching request carries PS domain information in the said CS and PS combined switching request message;
the target network control entity is used for receiving the switching request from the CS to the PS and establishing a data forwarding tunnel according to the carried PS domain information;
and the target network base station system is used for receiving the media data through the data forwarding tunnel.
In the above scheme, the target network control entity is specifically configured to determine whether an indirect data forwarding tunnel needs to be established according to PS domain information carried in a received CS-to-PS handover request; or directly establishing an indirect data forwarding tunnel according to the PS domain information carried by the received CS-to-PS switching request.
The invention provides a method and a system for realizing the continuity of reverse single standby service.A primary network base station system sends a CS and PS combined switching request message to an MSC; the MSC sends a CS-to-PS switching request to a target network control entity, wherein the CS-to-PS switching request carries PS domain information in the CS and PS combined switching request message; the target network control entity establishes a data forwarding tunnel according to the PS domain information; before the UE accesses a target network, the original network base station system forwards the received media data sent to the UE to the target network base station system through a data forwarding tunnel; therefore, the interruption of the PS domain service before the UE is accessed into the target network can be avoided, and the continuity of the PS service can be ensured.
Drawings
Fig. 1 is a schematic flow chart of a method for implementing reverse single standby service continuity in the prior art;
fig. 2 is a schematic flow chart of a method for implementing reverse single standby service continuity according to the present invention;
fig. 3 is a schematic structural diagram of a system for implementing reverse single standby service continuity according to the present invention;
fig. 4 is a flowchart illustrating a method for implementing reverse single standby service continuity according to an embodiment of the present invention.
Detailed Description
The basic idea of the invention is: the original network base station system sends a CS and PS combined switching request message to the MSC; the MSC sends a CS-to-PS switching request to a target network control entity, wherein the CS-to-PS switching request carries PS domain information in the CS and PS combined switching request message; the target network control entity establishes a data forwarding tunnel according to the PS domain information; before the UE accesses the target network, the original network base station system forwards the received media data sent to the UE to the target network base station system through the data forwarding tunnel.
The invention is further described in detail below with reference to the figures and the specific embodiments.
The invention discloses a method for realizing reverse single standby service continuity, which comprises the following steps as shown in figure 2:
step 201: the original network base station system sends a CS and PS combined switching request message to the MSC;
in this step, the CS and PS combined handover request message may be an IE that uses a PS handover message as a CS handover message; or the PS switching message is contained in the Transparent ContainerIE of the CS switching message; or at least combining the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message as the IE of the CS handover message, and incorporating the IE into the CS handover message, where the IE related to the resource reservation information and the PS domain tunnel information is as follows: source To Target Transmission Container IE; or at least the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message is contained in the transfer Container IE of the CS handover message.
Step 202: the MSC sends a CS-to-PS switching request to a target network control entity, wherein the CS-to-PS switching request carries PS domain information in the CS and PS combined switching request message;
in this step, the target network control entity is as follows: MME or SGSN;
the CS to PS handover request is as follows: CS to PS Forward Relocation Request;
the PS domain information at least comprises resource reservation information and PS domain tunnel information in the PS switching message.
Step 203: the target network control entity establishes a data forwarding tunnel according to the PS domain information;
specifically, the target network control entity may determine whether an Indirect Data forwarding tunnel (Indirect Data forwarding tunnel) needs to be established according to the received PS domain information carried in the CS-to-PS handover request, for example: according to the Direct Forwarding Path Availability information, when the Direct Forwarding Path Availability information indicates that the original network base station system and the target network base station system can establish a Direct Forwarding (Direct Forwarding) tunnel, the target network control entity does not establish an indirect data Forwarding tunnel and establishes a Direct Forwarding tunnel for the original network base station system and the target network base station system; when the Direct forwarding path Availability information indicates that the original network base station system and the target network base station system cannot establish the Direct forwarding tunnel, the target network control entity establishes the indirect data forwarding tunnel for the original network base station system and the target network base station system, and the method comprises the following steps: sending a message for establishing an Indirect data Forwarding Tunnel to a target network service gateway, for example, sending a Create index Forwarding Tunnel Request message, wherein the target network service gateway agrees to establish the Indirect data Forwarding Tunnel and returns a Create index Forwarding Tunnel Response message to a target network control entity;
the target network control entity may also directly establish the indirect data forwarding tunnel according to the received PS domain information carried by the CS to PS handover request without determining whether the indirect data forwarding tunnel needs to be established.
Before this step, further comprising: the target network control entity sends a request for acquiring the PS domain context to an original network data domain control entity; the original network data domain control entity returns the context information of the PS domain; a target network control entity sends a switching request to a target network base station system, and the switching request carries PS domain information; the target network base station system performs resource reservation according to the resource reservation information in the PS domain information and returns a switching response message to the target network control entity; the target network control entity sends a CS to PS handover response to the MSC.
Step 204: before the UE accesses a target network, the original network base station system forwards the received media data sent to the UE to the target network base station system through a data forwarding tunnel;
specifically, before the UE accesses the target network, because a data forwarding tunnel is established, where the data forwarding tunnel includes a direct data forwarding tunnel or a non-direct data forwarding tunnel, the original network base station system forwards the received media data sent to the UE to the target network base station system through the forwarding tunnel, and the target network base station system stores the forwarding data during a period when the UE does not access the target network, and sends the forwarding data to the UE after the UE accesses the target network.
In order to implement the foregoing method, the present invention further provides a system for implementing reverse single standby service continuity, as shown in fig. 3, the system includes: original network base station system 11, MSC 22, target network control entity 33, target network base station system 44; wherein,
the original network base station system 11 is configured to send a CS and PS combined handover request message to the MSC 22; after establishing a data forwarding tunnel and before accessing the UE to a target network, forwarding the received media data sent to the UE to a target network base station system through the data forwarding tunnel;
the MSC 22 is configured to send a CS-to-PS handover request to the target network control entity 33, where the CS-to-PS handover request carries PS domain information in the CS and PS combined handover request message;
the target network control entity 33 is configured to receive a CS-to-PS handover request, and establish a data forwarding tunnel according to the carried PS domain information;
a target network base station system 44, configured to receive the media data through the data forwarding tunnel;
the target network control entity 33 is specifically configured to determine whether an indirect data forwarding tunnel needs to be established according to the PS domain information carried in the received CS-to-PS handover request, where: according to the Direct Forwarding Path Availability information, when the Direct Forwarding Path Availability information indicates that the original network base station system 11 and the target network base station system 44 can establish a Direct Forwarding tunnel, an indirect data Forwarding tunnel is not established, and the Direct Forwarding tunnel is established for the original network base station system 11 and the target network base station system 44; when the Direct Forwarding Path Availability information indicates that the original network base station system 11 and the target network base station system 44 cannot establish a Direct Forwarding tunnel, establishing an indirect data Forwarding tunnel for the original network base station system 11 and the target network base station system 44; or directly establishing an indirect data forwarding tunnel according to the PS domain information carried by the received CS-to-PS switching request.
The following detailed description of the implementation and principles of the method of the present invention is provided in connection with specific embodiments.
Example one
The present embodiment implements scenarios of reverse single standby service continuity, such as: a call is established between UE-1 and UE-2, wherein UE-1 establishes a call through the CS domain of the 2/3G network, so that a CS media connection is connected to UE-1 in a call media path, and UE-1 has active PS services, so that UE-1 has an active PS service bearer connection. When the UE-1 moves to a PS domain that needs to change its used access mode to LTE or HSPA, the UE-1 implements a method of reverse single standby service continuity, as shown in fig. 4, including the following steps:
step 301: UE-1 establishes conversation with UE-2 through CS domain and original network CS domain control entity, namely Mobile Switching Center (MSC);
step 302: UE-1 sends measurement report to original network base station system to report cell signal intensity measurement information;
step 303: the original network base station system serving the UE-1 judges that the target network of the PS domain is more suitable for serving the UE-1 according to the signal intensity measurement information of each cell in the measurement report, determines to execute the switching operation, and sends a CS and PS combined switching request message to the MSC;
in this step, the CS and PS combined handover request message may be an IE that uses a PS handover message as a CS handover message; or the PS switching message is contained in the Transparent ContainerIE of the CS switching message; or at least combining the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message as the IE of the CS handover message, and incorporating the IE into the CS handover message, where the IE related to the resource reservation information and the PS domain tunnel information is as follows: source To Target Transmission Container IE; or at least the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message is contained in the transfer Container IE of the CS handover message.
Step 304: the MSC sends a CS to PS switching Request, such as a CS to PS Forward location Request, to a target network control entity, such as an MME or an SGSN, wherein the CS to PS switching Request carries PS domain information in the CS and PS combined switching Request message;
step 305: the target network control entity sends a Request for acquiring a PS domain Context, such as a PDP Context Request message, to an original network data domain control entity, such as SGSN;
step 306: the original network data domain control entity returns PS domain context information, for example, PDPContext Response message is sent to carry PDP context;
step 307: a target network control entity sends a switching Request, such as a Handover Request message, to a target network base station system, such as an eNB or an RNC, and carries PS domain information;
step 308: the target network base station system performs resource reservation according to the resource reservation information in the PS domain information and returns a switching Response message to the target network control entity, such as a message of sending a Handover Response;
step 309: the target network control entity establishes a data forwarding tunnel according to the PS domain information;
specifically, the target network control entity may determine whether an indirect data forwarding tunnel needs to be established according to the PS domain information carried in the received CS-to-PS handover request, for example: according to PS domain tunnel information in a CS-to-PS switching request, such as Direct Forwarding Path Availability information, when the PS domain tunnel information indicates that an original network base station system and a target network base station system can establish a Direct Forwarding tunnel, a target network control entity does not establish an indirect data Forwarding tunnel and establishes the Direct Forwarding tunnel for the original network base station system and the target network base station system; otherwise, the target network control entity establishes an indirect data forwarding tunnel for the original network base station system and the target network base station system, including: sending a message for establishing an Indirect data Forwarding Tunnel to a target network service gateway, for example, sending a Create index Forwarding Tunnel Request message, wherein the target network service gateway agrees to establish the Indirect data Forwarding Tunnel and returns a Create index Forwarding Tunnel Response message to a target network control entity; the target network control entity may also directly establish the indirect data forwarding tunnel according to the received PS domain information carried by the CS to PS handover request without determining whether the indirect data forwarding tunnel needs to be established.
Step 310: the target network control entity sends a CS to PS switching Response to the MSC, such as sending a CSto PS Forward Relocation Response message;
step 311: MSC sends switching Command, such as Handover Command message, to original network base station system, such as RNC or BSS;
step 312: the original network base station system sends a switching command to the UE-1, such as sending a Handover FromUTRAN message;
step 313: before UE-1 accesses a target network, an original network base station system forwards received media data sent to the UE-1 to the target network base station system through a data forwarding tunnel;
step 314: UE-1 receives the switching command, modulates the switching command to a target network PS domain and accesses the target network;
step 315: after accessing a target network, UE-1 sends a switching notification message, such as a Handover Notify message, to a target network base station system;
step 316: a target network base station system sends a switching notification message to a target network control network element;
step 317: the target network control network element updates the Bearer connection of the core network, for example, sends a Modify Bearer Request message to a target network service gateway, such as an SGW, so that the target network base station system establishes Bearer connection with the target network service gateway;
step 318: the target network service gateway sends a message for updating the load to the data network gateway, for example, sends a Modify Bearer Request message, so that the load connection is established between the target network service gateway and the data network gateway; therefore, IMS media connection 1 is established between UE-1 and UE-2, and bearing connection is established between UE-1 and a data network gateway through a target network base station system and a target network service gateway, so that UE-1 and UE-2 can continue to talk, and the PS service of UE-1 can continue to be carried out.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (9)
1. A method for realizing reverse single standby service continuity is characterized in that the method comprises the following steps:
the original network base station system sends a Circuit Switching (CS) and Packet Switching (PS) combined switching request message to a Mobile Switching Center (MSC);
the MSC sends a CS-to-PS switching request to a target network control entity, wherein the CS-to-PS switching request carries PS domain information in the CS and PS combined switching request message;
the target network control entity establishes a data forwarding tunnel according to the PS domain information;
before User Equipment (UE) accesses a target network, an original network base station system forwards received media data sent to the UE to the target network base station system through a data forwarding tunnel.
2. The method of claim 1, wherein the CS and PS combined handover request message is:
using the PS handover message as an Information Element (IE) of the CS handover message;
or the PS handover message is contained in a transparent storage information element (TransparentContainer IE) of the CS handover message;
or combining at least the IE related to the resource reservation information and the PS domain tunnel information in the PS switching message into the CS switching message as the IE of the CS switching message;
or at least the IE related to the resource reservation information and the PS domain tunnel information in the PS handover message is contained in the transparent storage information element of the CS handover message.
3. The method of claim 1, wherein the target network control entity is a Mobility Management Entity (MME) or a GPRS serving support node (SGSN).
4. The method of claim 1, wherein the PS domain information comprises at least resource reservation information and PS domain tunnel information in a PS handover message.
5. The method of claim 1, wherein the step of the target network control entity establishing the data forwarding tunnel according to the PS domain information comprises: the target network control entity establishes a Direct Forwarding tunnel for the original network base station system and the target network base station system without establishing an indirect data Forwarding tunnel when the Direct Forwarding Path Availability information indicates that the original network base station system and the target network base station system can establish the Direct Forwarding tunnel according to the Direct Forwarding Path Availability information; and when the Direct Forwarding Path Availability information indicates that the original network base station system and the target network base station system cannot establish the Direct Forwarding tunnel, establishing the indirect data Forwarding tunnel for the original network base station system and the target network base station system.
6. The method of claim 1, wherein the step of the target network control entity establishing the data forwarding tunnel according to the PS domain information comprises: the target network control entity directly establishes the indirect data forwarding tunnel according to the PS domain information carried by the received CS-to-PS switching request without judging whether the indirect data forwarding tunnel needs to be established.
7. The method of claim 1, wherein before the target network control entity establishes the data forwarding tunnel according to the PS domain information, the method further comprises:
the target network control entity sends a request for acquiring the PS domain context to an original network data domain control entity; the original network data domain control entity returns the context information of the PS domain; a target network control entity sends a switching request to a target network base station system, and the switching request carries PS domain information; the target network base station system performs resource reservation according to the resource reservation information in the PS domain information and returns a switching response message to the target network control entity; the target network control entity sends a CS to PS handover response to the MSC.
8. A system for implementing reverse single-standby service continuity, the system comprising: the system comprises an original network base station system, an MSC, a target network control entity and a target network base station system; wherein,
the original network base station system is used for sending a CS and PS combined switching request message to the MSC; after establishing a data forwarding tunnel and before accessing the UE to a target network, forwarding the received media data sent to the UE to a target network base station system through the data forwarding tunnel;
MSC, used for sending CS to PS switching request to target network control entity, the said CS to PS switching request carries PS domain information in the said CS and PS combined switching request message;
the target network control entity is used for receiving the switching request from the CS to the PS and establishing a data forwarding tunnel according to the carried PS domain information;
and the target network base station system is used for receiving the media data through the data forwarding tunnel.
9. The system according to claim 8, wherein the target network control entity is specifically configured to determine whether an indirect data forwarding tunnel needs to be established according to PS domain information carried in the received CS-to-PS handover request; or directly establishing an indirect data forwarding tunnel according to the PS domain information carried by the received CS-to-PS switching request.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110365970.8A CN103118407B (en) | 2011-11-17 | 2011-11-17 | A kind of method and system for realizing reverse single-standby service continuity |
| PCT/CN2012/084853 WO2013071897A1 (en) | 2011-11-17 | 2012-11-19 | Method and system for implementing reverse single radio voice call continuity |
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| CN201110365970.8A CN103118407B (en) | 2011-11-17 | 2011-11-17 | A kind of method and system for realizing reverse single-standby service continuity |
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| CN103118407A true CN103118407A (en) | 2013-05-22 |
| CN103118407B CN103118407B (en) | 2018-05-11 |
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| WO (1) | WO2013071897A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206898A (en) * | 2016-12-20 | 2018-06-26 | 展讯通信（上海）有限公司 | Realize the method, apparatus of multi-party call and mostly logical terminal |
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| CN1909501A (en) * | 2005-08-05 | 2007-02-07 | 华为技术有限公司 | Method for end to end service rapid convergence and route device |
| EP2098022A1 (en) * | 2006-12-28 | 2009-09-09 | Nokia Corporation | Handover of circuit-switched call to packet-switched call, and vice versa |
| CN102088681A (en) * | 2009-12-03 | 2011-06-08 | 华为技术有限公司 | Method, equipment and system for processing voice call continuity service |
| CN102238158A (en) * | 2010-04-26 | 2011-11-09 | 中兴通讯股份有限公司 | Reverse single radio voice call continuity realization method and system |
| CN102238672A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Method and system for realizing rSRVCC (reverse signal radio voice call continuity) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102387557B (en) * | 2010-08-30 | 2014-09-17 | 华为技术有限公司 | Processing method, equipment and system of reverse single wireless voice calling continuity |
-
2011
- 2011-11-17 CN CN201110365970.8A patent/CN103118407B/en not_active Expired - Fee Related
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2012
- 2012-11-19 WO PCT/CN2012/084853 patent/WO2013071897A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1909501A (en) * | 2005-08-05 | 2007-02-07 | 华为技术有限公司 | Method for end to end service rapid convergence and route device |
| EP2098022A1 (en) * | 2006-12-28 | 2009-09-09 | Nokia Corporation | Handover of circuit-switched call to packet-switched call, and vice versa |
| CN102088681A (en) * | 2009-12-03 | 2011-06-08 | 华为技术有限公司 | Method, equipment and system for processing voice call continuity service |
| CN102238672A (en) * | 2010-04-23 | 2011-11-09 | 中兴通讯股份有限公司 | Method and system for realizing rSRVCC (reverse signal radio voice call continuity) |
| CN102238158A (en) * | 2010-04-26 | 2011-11-09 | 中兴通讯股份有限公司 | Reverse single radio voice call continuity realization method and system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108206898A (en) * | 2016-12-20 | 2018-06-26 | 展讯通信（上海）有限公司 | Realize the method, apparatus of multi-party call and mostly logical terminal |
| CN108206898B (en) * | 2016-12-20 | 2021-03-19 | 展讯通信（上海）有限公司 | Method and device for realizing multi-party call and multi-pass terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103118407B (en) | 2018-05-11 |
| WO2013071897A1 (en) | 2013-05-23 |
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