WO2018098788A1

WO2018098788A1 - Method and apparatus for releasing wireless access bearer

Info

Publication number: WO2018098788A1
Application number: PCT/CN2016/108276
Authority: WO
Inventors: 辛阳; 吴晓波; 崇卫微
Original assignee: 华为技术有限公司
Priority date: 2016-12-01
Filing date: 2016-12-01
Publication date: 2018-06-07

Abstract

A method and apparatus for releasing a wireless access bearer, for use in resolving the problem in the prior art of a longer time for terminating a VoLTE service by a terminal device when an access device serving the terminal device executes an SRVCC handover process. The method comprises: in a wireless access bearer release process, when an access device serving a terminal device that is performing a VoLTE service is executing an SRVCC handover process, stopping execution of the SRVCC handover process after the access device receives a wireless access bearer release message for the terminal device sent by a network element of a core network, and executing the wireless access bearer release process. In this way, the access device stops execution of the SRVCC handover process, so that the time for waiting for the termination of the SRVCC handover process by the network element of the core network and the like is saved, and the execution process of the wireless access bearer release is shortened, and the time for terminating the VoLTE service by the terminal device is shorter, thereby improving user experience.

Description

Radio access bearer release method and device

Technical field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for releasing a radio access bearer.

Background technique

The voice service of the Long Term Evolution (LTE) network is called Voice over LTE (VoLTE) service. Currently, more and more terminal devices can support VoLTE services.

When the two terminal devices implement the VoLTE service, the two terminal devices need to establish a bearer with the network device in the LTE network, so that the two terminal devices can respectively transmit the voice data in the VoLTE service through the established bearer. Wherein, in the bearer, the voice data is transmitted in the form of an Internet Protocol (IP) data packet.

In the process of performing the VoLTE service on the two terminal devices, the access device of each terminal device in the LTE network monitors the signal strength of the cell where the terminal device is located in real time, and when the access device determines the cell When the signal strength is weak, a Single Radio Voice Call Continuity (SRVCC) handover procedure is performed to enable other target access devices to transmit voice data in the VoLTE service to ensure continuity of voice data transmission. .

In the process of performing the VoLTE service on the two terminal devices, when any one of the two terminal devices needs to end the VoLTE service, a bearer release process is initiated; a network element device of the VoLTE service in the LTE network The bearer is deleted in the bearer release process, and the access device of the terminal device releases the resource occupied by the bearer.

After the access device receives the indication of the release of the bearer sent by the network element device in the LTE network, the access device sends a reject release message to the network element device. The continuation of the SRVCC handover procedure is performed; the network element device can continue to send the indication of the bearer release to the handover success after determining that the access device performs the SRVCC handover end (switching success or handover failure). Target access device or as described before switching Accessing the device to complete the bearer release process.

Obviously, in the foregoing bearer release procedure, when the access device serving the terminal device for performing the VoLTE service is performing the SRVCC handover procedure, the access device or other target access device must be after the SRVCC handover procedure ends. The bearer release process can be continued to be performed, causing the bearer release process to be performed longer, causing the terminal device to extend the VoLTE service for a longer period of time and reducing the user experience.

Summary of the invention

The embodiment of the present application provides a method and a device for releasing a radio access bearer, which are used to solve the problem that the terminal device ends the VoLTE service by performing an SRVCC handover procedure in the prior art. problem.

The specific technical solutions provided by the present application are as follows:

In a first aspect, the embodiment of the present application provides a radio access bearer release method, where the method is applied to a VoLTE voice network system, and the method includes:

When the access device that provides the service for the terminal device that performs the VoLTE service is performing the single wireless voice call continuity SRVCC handover procedure, the access device receives the wireless access bearer sent by the core network element for the terminal device. After the message is released, the SRVCC handover procedure is stopped according to the radio access bearer release message, and the radio access bearer release is performed on the terminal device according to the radio access bearer release message.

In the above method, the access device stops performing the SRVCC handover procedure, saves the time that the core network element waits for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling The terminal device ends the VoLTE service for a short period of time, which improves the user experience.

In a possible design, the radio access bearer release message may be an Evolved Radio Access Bearer (E-RAB) release request sent by the core network element to the access device ( Release Request).

In a possible design, the access device releases a message according to the radio access bearer. The execution of the SRVCC handover process is stopped, and the following two methods are specifically implemented:

The first mode: when the core network element determines that the access device is performing the SRVCC handover process, the core network element may carry the stop handover indication information on the radio access bearer release In the message, after the access device receives the radio access bearer release message, the access device may stop performing the SRVCC handover procedure according to the stop handover indication information.

The second mode: after receiving the radio access bearer release message, the access device determines whether the SRVCC handover procedure that is being executed is ended, and if it is determined that the SRVCC handover procedure being executed is not completed, Then the execution of the SRVCC handover procedure is stopped.

In a possible design, after the access device stops performing the SRVCC handover procedure, the access device sends a handover stop notification message to the core network element. In this way, after receiving the handover stop notification message, the core network element may notify other related network devices to prevent the other network device from continuing to provide the SRVCC handover resource for the access device, and avoid resources. waste.

In a possible design, the access device may use a conventional radio access bearer release procedure to perform radio access bearer release on the terminal device, which may include the following steps:

The access device sends a Radio Resource Control (RRC) Connection Reconfiguration message to the terminal device, requesting to release the air interface resource; and then, at the terminal device, according to the received access device After the RRC Connection Reconfiguration is released, the access device receives the RRC Connection Reconfiguration Complete message sent by the terminal device, confirming that the air interface resource has been deleted; and finally, confirming After the air interface resource of the terminal device is deleted, the access device sends an evolved radio access bearer release response (E-RAB Release Response) message to the core network element to confirm that the radio access bearer has been deleted. .

Through the foregoing method, the terminal device can be caused to end the VoLTE service.

In a second aspect, the embodiment of the present application further provides a radio access bearer release method, where the method is applied to a VoLTE voice network system, where the method includes:

After receiving the radio access bearer release command for the terminal device, the core network element determines that the access device serving the terminal device is performing a single wireless voice call continuity SRVCC handover procedure; then, the core network The element sends a radio access bearer release message including the stop handover indication information to the access device, where the stop handover indication information is used to instruct the access device to stop performing the SRVCC handover procedure.

The method of the foregoing method, the core network element sends a radio access bearer release message including the stop handover indication information to the access device, and the access device may stop performing the SRVCC handover according to the stop handover indication information. Process. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

In a possible design, the radio bearer release command may be a delete bearer request sent by the serving gateway (GWW)/Packet Data Network Gateway (PGW) to the core network element (Delete Bearer) Request).

In a possible design, the radio access bearer release message may be an E-RAB Release Request sent by the core network element to the access device.

In a possible design, after the core network element sends the radio access bearer release message to the access device, it receives a handover stop notification message sent by the access device.

After receiving the handover stop notification message, the core network element may notify the other related network devices to prevent the other network device from continuing to provide the resource for performing the SRVCC handover for the access device. To avoid wasting resources.

In a third aspect, the embodiment of the present application further provides an access device, where the access device has the function of implementing the behavior of the access device in the foregoing method instance. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more of the functions described above Corresponding modules.

In a possible design, the structure of the access device includes a processing unit and a receiving unit, and the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example, which is not described herein.

In a possible design, the structure of the access device includes a transceiver, a processor, a bus, and a memory for communicating with other devices in the VoLTE voice network system, the processor being It is configured to support the access device to perform a corresponding function in the foregoing method. The memory is coupled to the processor, which stores program instructions and data necessary for the access device.

In a fourth aspect, the embodiment of the present application further provides a core network element, where the core network element has a function of implementing a core network element behavior in the foregoing method instance. The functions may be implemented by hardware or by corresponding software implemented by hardware. The hardware or software includes one or more modules corresponding to the functions described above.

In a possible design, the structure of the core network element includes a receiving unit, a processing unit, and a sending unit, and the units may perform corresponding functions in the foregoing method examples. For details, refer to the detailed description in the method example. Make a statement.

In a possible design, the core network element includes a transceiver, a processor, a bus, and a memory, and the transceiver is configured to perform communication interaction with other devices in the VoLTE voice network system, where the processor It is configured to support the core network element to perform the corresponding function in the above method. The memory is coupled to the processor, which stores program instructions and data necessary for the core network element.

In a fifth aspect, the embodiment of the present application further provides a VoLTE voice network system, where the VoLTE voice network system includes a terminal device, an access device, and a core network element.

With the radio access bearer release method provided by the embodiment of the present application, in the radio access bearer release process, when the access device serving the terminal device that performs the VoLTE service is performing the SRVCC handover process, the access device receives After the radio access bearer release message is sent by the core network element to the terminal device, the SRVCC handover procedure is stopped according to the radio access bearer release message, and the radio access bearer release procedure is performed. In this way, the access device stops The execution of the SRVCC handover process saves the time that the core network element waits for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, so that the terminal device ends the VoLTE service. Shorter time, improving the user experience.

DRAWINGS

FIG. 1 is a schematic structural diagram of a VoLTE voice network system according to an embodiment of the present application;

FIG. 2 is a flowchart of a method for releasing a radio access bearer according to an embodiment of the present disclosure;

FIG. 3 is a flowchart of an example of a method for releasing a radio access bearer according to an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of an access device according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a core network element according to an embodiment of the present disclosure;

FIG. 6 is a structural diagram of an access device according to an embodiment of the present application;

FIG. 7 is a structural diagram of a core network element according to an embodiment of the present disclosure.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The embodiment of the present invention provides a method and a device for releasing a radio access bearer, which are used to solve the SRVCC handover procedure when an access device serving a terminal device for performing a VoLTE service is performing an SRVCC handover procedure in the prior art. After the access device or other access device can continue to perform the bearer release process, the process of performing the bearer release process is long, and the time for the terminal device to end the VoLTE service is extended, and the user is reduced. The problem of experience. The method and the device are based on the same inventive concept. Since the principles of the method and the device for solving the problem are similar, the implementation of the device and the method can be referred to each other, and the repeated description is not repeated.

In the technical solution of the embodiment of the present application, in the radio access bearer release process, when When the access device of the terminal service of the VoLTE service is performing the SRVCC handover procedure, the access device receives the radio access bearer release message for the terminal device sent by the core network element, according to the radio access The bearer release message stops the execution of the SRVCC handover procedure and performs a radio access bearer release procedure. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) The access device according to the embodiment of the present application, which is also referred to as a base station (BS), is a device that provides a radio access service for the terminal device, including but not limited to: an evolved Node B (evolved Node B) , eNB), radio network controller (RNC), Node B (Node B, NB), Base Station Controller (BSC), Base Transceiver Station (BTS), and home base station ( For example, Home evolved NodeB, or Home Node B, HNB), BaseBand Unit (BBU), Access Point (AP), Small-cell Access Point (SAP), and wireless connection Wireless Fidelity Access Point (WiFi AP), Worldwide Interoperability for Microwave Access (WiMAX) BS, etc.

2) The terminal device, which is also referred to as a User Equipment (UE), is a device that provides data connectivity to a user, for example, a handheld device with an wireless connection function, and an in-vehicle device. , a wearable device, a computing device, a mobile station (MS) or other processing device connected to the wireless modem, and the like, and a mobile terminal that communicates with one or more core networks via the access network.

3) The core network element involved in the embodiment of the present application is responsible for managing the access device, and may be, but not limited to, a Mobile Management Entity (MME).

The method and apparatus for releasing a radio access bearer provided by an embodiment of the present application are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a possible VoLTE voice network system applicable to a radio access bearer release method according to an embodiment of the present application. The architecture of the VoLTE voice network system includes: a radio access network, a core network, and a multimedia subsystem network. . among them,

The access device in the radio access network provides services for the terminal device that performs the VoLTE service, and implements functions related to the radio access. When the access device determines that the signal strength of the cell where the terminal device is located is weak, in order to ensure the continuity of voice data transmission in the VoLTE service, the access device performs an SRVCC handover process to enable other targets. The access device transmits voice data in the VoLTE service. For example, when BS1 in the figure determines that the signal strength of the cell where the terminal device is located is weak, the SRVCC handover procedure is performed, so that BS2 provides a service for the terminal device to transmit voice data in the VoLTE service.

The core network mainly includes the following key logical network elements: MME, SGW, PGW, Mobile Switching Center (MSC), Home Subscriber Service (HSS), and policy and charging rule functions (Policy). And charging rule function (PCRF), the following describes the above network elements:

The MME performs the processing of the signaling plane function, such as the authentication, the handover, the mobility management of the idle state terminal, the user context, and the bearer management, etc., where the terminal device initiates the radio access bearer release process. The MME may receive a radio access bearer release command for the terminal device, and then the MME sends a radio access bearer release message for the terminal device to the access device;

The HSS is configured to store subscription information of a user;

The S-GW is used for routing and forwarding of a data network, and provides lawful interception related functions;

The P-GW is a gateway connected to an external data network, a Third Generation Partnership Project ^{(3 rd Generation Partnership Project ,, 3GPP} ) and non-3GPP access network user plane anchor point between access networks, the user is responsible for address The S-GW and the P-GW may be deployed in the same physical device, or deployed in different physical devices, and implemented in the present application. This example does not limit this;

The MSC is a call forwarding service and call control device between a telephone and a data system. The MSC converts all calls between the mobile phone and the Public Switched Telephone Network (PSTN) and other mobile phones; the MSC completes call connection, handoff control, wireless channel management, etc. And also an interface device of the mobile network and the fixed network such as the PSTN and the Integrated Services Digital Network (ISDN);

The PCRF provides policy and charging rules.

The multimedia subsystem network includes an IP Multimedia Subsystem (IMS), which is defined by the 3GPP organization for the mobile network, wherein the IMS has been defined to support multimedia services of all IP access networks. The core network can support any kind of mobile or fixed, wired or wireless IP-Connectivity Access Network (IP-CAN).

The terminal device can perform VoLTE services through the radio access network, the core network, and the multimedia subsystem network.

A method for releasing a radio access bearer provided by an embodiment of the present application is applicable to a VoLTE voice network system as shown in FIG. 1 . Referring to Figure 2, the specific process of the method includes:

Step 201: The core network element sends a radio access bearer release message for the terminal device to the access device, where the access device provides a service for the terminal device that performs the VoLTE service, and the access device is performing a single wireless voice. Call continuity SRVCC handover process.

The radio access bearer release message may be an evolved radio access bearer (E-RAB) release request (Release Request) sent by the core network element to the access device.

The core network element receives the radio bearer release command for the terminal device, and the radio bearer release command triggers the core network element to perform step 201. The radio bearer release command may be a Delete Bearer Request sent by the SGW/PGW to the core network element.

Step 202: The access device stops performing the SRVCC handover procedure according to the radio access bearer release message, and performs no execution on the terminal device according to the radio access bearer release message. The line access bearer is released.

The SRVCC handover procedure is to ensure the continuity of the voice data transmission in the VoLTE service, but in the radio access bearer release procedure, the terminal device is to end the VoLTE service and ensure the VoLTE service. The continuity of the voice data transmission is not necessary for the terminal device. Therefore, the SRVCC handover procedure is an unnecessary operation for the terminal device to end the VoLTE service.

Further, if the execution of the SRVCC handover process is completed, after the radio access bearer release process ends, the terminal device needs to re-execute the Tracking Area Update (TAU) process to return to the original The network, from which it can be seen that the SRVCC handover procedure is not necessary.

In summary, the SRVCC handover procedure performed by the access device is completely unnecessary for the currently performed VoLTE service of the terminal device, and the access device stops executing the SRVCC handover procedure, which not only saves The unnecessary link also saves the time that the core network element waits for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, so that the terminal device ends the VoLTE service. Shorter, enhances the user experience.

Optionally, the access device stops performing the SRVCC handover process according to the radio access bearer release message, and may be specifically classified into the following two manners:

The first mode: when the core network element determines that the access device is performing the SRVCC handover process, the core network element may perform the step of stopping the handover indication information in the step 201 After the radio access bearer release message is received, the access device may stop performing the SRVCC handover procedure according to the stop handover indication information.

In the above method, the access device stops performing the SRVCC handover procedure, which saves time for the core network element to wait for the end of the SRVCC handover process, and shortens the wireless access The release process execution process is performed, so that the terminal device ends the VoLTE service for a shorter period of time and improves the user experience.

Optionally, after the access device stops performing the SRVCC handover procedure, the access device sends a handover stop notification message to the core network element. After receiving the handover stop notification message, the core network element notifies other related network devices that the other network device does not need to continue providing the resource for performing the SRVCC handover for the access device, thereby avoiding resource waste.

Optionally, the access device may use a traditional radio access bearer release process to perform radio access bearer release on the terminal device, which may include the following steps:

The access device sends an RRC Connection Reconfiguration message to the terminal device, requesting to release the air interface resource;

After the terminal device releases the air interface resource according to the received RRC Connection Reconfiguration sent by the access device, the access device receives an RRC Connection Reconfiguration Complete message sent by the terminal device, and confirms that the air interface resource has been delete;

After confirming that the air interface resource of the terminal device has been deleted, the access device sends an E-RAB Release Response message to the core network element to confirm that the radio access bearer has been deleted.

With the radio access bearer release method provided by the embodiment of the present application, in the radio access bearer release process, when the access device serving the terminal device that performs the VoLTE service is performing the SRVCC handover process, the access device receives After the radio access bearer release message is sent by the core network element to the terminal device, the SRVCC handover procedure is stopped according to the radio access bearer release message, and the radio access bearer release procedure is performed. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

Based on the foregoing embodiment, the embodiment of the present application further provides an example of a radio access bearer release method, which is applicable to the VoLTE voice network system shown in FIG. 1 . Referring to Figure 3, the specific process of the example includes:

Step 301: After receiving the radio access bearer release command for the terminal device, the core network element determines that the access device that provides the service for the terminal device is performing a single wireless voice call continuity SRVCC handover procedure.

The radio bearer release command may be a Delete Bearer Request sent by the SGW/PGW to the core network element.

When the access device performs the SRVCC handover procedure, the SRVCC handover request needs to be first sent to the core network element, and the access device can start after receiving the SRVCC handover instruction sent by the core network element. The SRVCC handover procedure is performed. Therefore, the core network element may determine that the access device is performing the SRVCC handover procedure by determining that the SRVCC handover instruction is sent to the access device.

Step 302: The core network element sends a radio access bearer release message including the stop handover indication information to the access device, where the stop handover indication information is used to instruct the access device to stop executing the SRVCC. Switch the process.

The radio access bearer release message may be an E-RAB Release Request sent by the core network element to the access device.

Steps 302 are performed by the network element of the core network, so that the access device stops performing the SRVCC handover procedure directly according to the stop handover indication information.

Step 303: The access device stops performing the SRVCC handover procedure according to the radio access bearer release message, and performs radio access bearer release on the terminal device according to the radio access bearer release message.

Further, if the execution of the SRVCC handover procedure is completed, after the radio access bearer release procedure ends, the terminal device also needs to perform tracking area update again (Tracking) The Area Update (TAU) process returns to the original network, and thus the SRVCC handover procedure is not necessary.

Optionally, the access device may use a traditional radio access bearer release procedure to perform radio access bearer release on the terminal device, and the specific method and the access device in the step 202 adopt a traditional radio access bearer. The release process is the same and will not be described here.

Step 304: The access device sends a handover stop notification message to the core network element.

After the step S304 is performed by the access device, the core network element may notify the other related network devices after receiving the handover stop notification message, so that the other network device does not need to continue to provide execution for the access device. The SRVCC switches resources to avoid resource waste.

With the radio access bearer release method provided by the embodiment of the present application, in the radio access bearer release process, when the access device serving the terminal device that performs the VoLTE service is performing the SRVCC handover process, the access device receives After the radio access bearer release message for the terminal device that includes the stop handover indication information sent by the core network element, the radio access bearer release message is stopped, the SRVCC handover procedure is stopped, and the radio access bearer is executed. Release the process. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

Based on the foregoing embodiment, the embodiment of the present application further provides an access device, which is applied to the VoLTE voice network system shown in FIG. 1 and is used to implement the wireless access as shown in FIG. 2 and FIG. 3. Carrying release method. Referring to FIG. 4, the access device 400 includes: a receiving unit 401 and a processing unit 402, where

The receiving unit 401 is configured to receive a radio access bearer release message sent by the core network element for the terminal device;

The processing unit 402 is configured to release a message according to the radio access bearer when the access device 400 that is determined to provide the service for the terminal device that performs the VoLTE service is performing a single wireless voice call continuity SRVCC handover procedure. Stop performing the SRVCC handover procedure, and perform radio access bearer release on the terminal device according to the radio access bearer release message.

Optionally, the processing unit 402 is configured to: when the SRVCC switching process is stopped according to the radio access bearer release message, specifically:

And stopping, according to the stop handover indication information included in the radio access bearer release message, stopping the performing the SRVCC handover procedure, where the radio access bearer release message is determined by the core network element in the access device 400 Sent when the SRVCC handover procedure is being executed.

After the receiving unit 401 receives the radio access bearer release message, and determines that the SRVCC handover procedure being executed has not ended, stopping the execution of the SRVCC handover procedure.

Optionally, the access device 400 further includes:

And a sending unit, configured to send a handover stop notification message to the core network element after the processing unit 402 stops performing the SRVCC handover procedure.

With the access device provided by the embodiment of the present application, in the radio access bearer release process, when the access device that serves the terminal device that performs the VoLTE service is performing the SRVCC handover process, the core network element is sent. After the radio access bearer release message is sent to the terminal device, the SRVCC handover procedure is stopped according to the radio access bearer release message, and the radio access bearer release procedure is performed. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

Based on the foregoing embodiment, the embodiment of the present application further provides a core network element, the core network The element is applied to the VoLTE voice network system shown in FIG. 1 for implementing the radio access bearer release method as shown in FIG. 2 and FIG. 3. Referring to FIG. 5, the core network element 500 includes: a receiving unit 501, a processing unit 502, and a sending unit 503, where

The receiving unit 501 is configured to receive a radio access bearer release instruction for the terminal device.

The processing unit 502 is configured to determine that an access device that provides a service for the terminal device is performing a single wireless voice call continuity SRVCC handover procedure;

The sending unit 503 is configured to send, to the access device, a radio access bearer release message that includes stop handover indication information, where the stop handover indication information is used to instruct the access device to stop performing the SRVCC handover. Process.

Optionally, the receiving unit 501 is further configured to:

After the sending unit 503 sends the radio access bearer release message to the access device, the switch stop notification message sent by the access device is received.

After receiving the radio access bearer release command for the terminal device, the access device that provides the service for the terminal device is performing the SRVCC handover process, and then the device is connected to the core network element provided by the embodiment of the present application. The ingress device sends a radio access bearer release message including the stop handover indication information, so that the access device stops performing the SRVCC handover procedure according to the radio access bearer release message, and performs a radio access bearer release procedure. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logical function division. In actual implementation, there may be another division manner. The functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on this understanding, this The technical solution of the application or the part of the technical solution that contributes to the prior art or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions. A computer device (which may be a personal computer, server, or network device, etc.) or processor is implemented to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .

Based on the above embodiment, the embodiment of the present application further provides an access device, which is applied to the VoLTE voice network system shown in FIG. 1 . Referring to FIG. 6 , the access device 600 includes: a transceiver. 601, a processor 602, a bus 603, and a memory 604, wherein

The transceiver 601, the processor 602, and the memory 604 are connected to each other by the bus 603; the bus 603 may be a peripheral component interconnect (PCI) bus or an extended industry standard structure ( Extended industry standard architecture, EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 6, but it does not mean that there is only one bus or one type of bus.

The transceiver 601 is configured to perform communication interaction with other devices connected to the access device 600 in the VoLTE voice network system.

The processor 602 is configured to implement the method for releasing a radio access bearer as shown in FIG. 2 and FIG. 3, including:

When the access device 600 that provides the service for the terminal device that performs the VoLTE service is performing the single wireless voice call continuity SRVCC handover procedure, receiving the radio access bearer release message sent by the core network element for the terminal device;

And stopping, according to the radio access bearer release message, stopping the SRVCC handover procedure, and performing radio access bearer release on the terminal device according to the radio access bearer release message.

Optionally, the processor 602 is specifically configured to: when the SRVCC handover process is stopped according to the radio access bearer release message,

And stopping, according to the stop handover indication information included in the radio access bearer release message, stopping the performing the SRVCC handover procedure, where the radio access bearer release message is determined by the core network element in the access device 600 Sent when the SRVCC handover procedure is being executed.

After receiving the radio access bearer release message, determining that the SRVCC handover procedure being performed has not ended, stopping the execution of the SRVCC handover procedure.

Optionally, the processor 602 is further configured to:

After the execution of the SRVCC handover procedure is stopped, a handover stop notification message is sent to the core network element.

The memory 604 is configured to store a program or the like. In particular, the program can include program code, the program code including computer operating instructions. The memory 604 may include RAM, and may also include non-volatile memory, such as at least one disk storage. The processor 602 executes the application stored in the memory 604 to implement the foregoing functions, thereby implementing the radio access bearer release method as shown in FIG. 2 and FIG. 3.

Based on the foregoing embodiment, the embodiment of the present application further provides a core network element, where the core network element is applied to the VoLTE voice network system shown in FIG. 1 . Referring to FIG. 7 , the core network element 700 includes a transceiver 701, a processor 702, a bus 703, and a memory 704, wherein

The transceiver 701, the processor 702, and the memory 704 pass through the bus 703 The bus 703 may be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 7, but it does not mean that there is only one bus or one type of bus.

The transceiver 701 is configured to perform communication interaction with other devices connected to the core network element 700 in the VoLTE voice network system.

The processor 702 is configured to implement the method for releasing a radio access bearer as shown in FIG. 2 and FIG. 3, including:

After receiving the radio access bearer release command for the terminal device, determining that the access device serving the terminal device is performing a single radio voice call continuity SRVCC handover procedure;

Sending, to the access device, a radio access bearer release message, including the stop handover indication information, where the stop handover indication information is used to instruct the access device to stop performing the SRVCC handover procedure.

Optionally, the processor 702 is further configured to:

After transmitting the radio access bearer release message to the access device, receiving a handover stop notification message sent by the access device.

The memory 704 is configured to store a program or the like. In particular, the program can include program code, the program code including computer operating instructions. The memory 704 may include RAM, and may also include non-volatile memory, such as at least one disk storage. The processor 702 executes the application stored in the memory 704 to implement the foregoing functions, thereby implementing the radio access bearer release method as shown in FIG. 2 and FIG. 3.

After receiving the radio access bearer release command for the terminal device, the access device that provides the service for the terminal device is performing the SRVCC handover process, and then the device is connected to the core network element provided by the embodiment of the present application. The ingress device sends a radio access bearer release message including the stop handover indication information, so that the access device stops performing the SRVCC handover procedure according to the radio access bearer release message, and performs a radio access bearer release procedure. In this way, the access The device stops the execution of the SRVCC handover process, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, so that the terminal device ends the VoLTE The short time of the business has improved the user experience.

In the above, the radio access bearer release method and apparatus provided in the embodiment of the present application, in the radio access bearer release process, when the access device serving the terminal device that performs the VoLTE service is performing the SRVCC handover process, After receiving the radio access bearer release message sent by the core network element for the terminal device, the access device stops performing the SRVCC handover process and performs radio access according to the radio access bearer release message. The bearer release process. In this way, the access device stops performing the SRVCC handover procedure, saves the time for the core network element to wait for the end of the SRVCC handover process, and shortens the execution process of the radio access bearer release process, thereby enabling the The terminal device ends the VoLTE service for a shorter period of time, which improves the user experience.

Those skilled in the art will appreciate that embodiments of the present application can be provided as a method, system, or computer program product. Thus, the present application can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment in combination of software and hardware. Moreover, the application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The device is implemented in a flow chart or Multiple processes and/or block diagrams The functions specified in one or more boxes.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.

While the preferred embodiment of the present application has been described, those skilled in the art can make further changes and modifications to these embodiments once they are aware of the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

It is apparent that those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, it is intended that the present invention cover the modifications and variations of the embodiments of the present invention.

Claims

A method for releasing a radio access bearer, comprising:

When the access device that provides the service for the terminal device that performs the VoLTE service is performing the single wireless voice call continuity SRVCC handover procedure, the access device receives the wireless access bearer release for the terminal device sent by the core network element Message

The access device stops performing the SRVCC handover procedure according to the radio access bearer release message, and performs radio access bearer release on the terminal device according to the radio access bearer release message.
The method according to claim 1, wherein the access device stops performing the SRVCC handover procedure according to the radio access bearer release message, including:

The access device stops performing the SRVCC handover procedure according to the stop handover indication information included in the radio access bearer release message, where the radio access bearer release message is determined by the core network element in the determining Sent when the access device is performing the SRVCC handover procedure.
The method according to claim 1, wherein the access device stops performing the SRVCC handover procedure according to the radio access bearer release message, including:

After receiving the radio access bearer release message, the access device determines that the SRVCC handover procedure being executed has not ended, and the access device stops performing the SRVCC handover procedure.
The method according to any one of claims 1-3, wherein after the access device stops performing the SRVCC handover procedure, the method further includes:

The access device sends a handover stop notification message to the core network element.
A method for releasing a radio access bearer, comprising:

After receiving the radio access bearer release command for the terminal device, the core network element determines that the access device serving the terminal device is performing a single wireless voice call continuity SRVCC handover procedure;

Transmitting, by the core network element, the wireless access including the stop handover indication information to the access device And a bearer release message, where the stop handover indication information is used to instruct the access device to stop performing the SRVCC handover procedure.
The method of claim 5, wherein after the core network element sends the radio access bearer release message to the access device, the method further includes:

The core network element receives the handover stop notification message sent by the access device.
An access device, comprising:

a receiving unit, configured to receive a radio access bearer release message sent by the core network element for the terminal device;

a processing unit, configured to: when the access device that is determined to provide the service for the terminal device that performs the VoLTE service is performing a single wireless voice call continuity SRVCC handover procedure, stop the execution according to the radio access bearer release message The SRVCC handover procedure is performed, and the radio access bearer release is performed on the terminal device according to the radio access bearer release message.
The access device according to claim 7, wherein the processing unit is configured to: when the SRVCC handover procedure is stopped according to the radio access bearer release message, specifically:

Stop performing the SRVCC handover procedure according to the stop handover indication information included in the radio access bearer release message, where the radio access bearer release message is that the core network NE determines that the access device is Sent when the SRVCC handover procedure is executed.
The access device according to claim 7, wherein the processing unit is configured to: when the SRVCC handover procedure is stopped according to the radio access bearer release message, specifically:

After the receiving unit receives the radio access bearer release message, and determines that the SRVCC handover procedure being executed has not ended, stopping the execution of the SRVCC handover procedure.
The access device according to any one of claims 7-9, further comprising:

And a sending unit, configured to send a handover stop notification message to the core network element after the processing unit stops performing the SRVCC handover procedure.
A core network element, characterized by comprising:

a receiving unit, configured to receive a radio access bearer release instruction for the terminal device;

a processing unit, configured to determine that the access device serving the terminal device is performing a single Wireless voice call continuity SRVCC handover procedure;

And a sending unit, configured to send, to the access device, a radio access bearer release message that includes the stop handover indication information, where the stop handover indication information is used to instruct the access device to stop performing the SRVCC handover procedure.
The core network element of claim 11, wherein the receiving unit is further configured to:

And after the sending unit sends the radio access bearer release message to the access device, receiving a handover stop notification message sent by the access device.