WO2019104523A1

WO2019104523A1 - Voice session establishment method, apparatus, device, and storage medium

Info

Publication number: WO2019104523A1
Application number: PCT/CN2017/113521
Authority: WO
Inventors: 段小嫣; 金辉
Original assignee: 华为技术有限公司
Priority date: 2017-11-29
Filing date: 2017-11-29
Publication date: 2019-06-06
Also published as: CN110915291A; CN110915291B

Abstract

The present application provides a voice session establishment method, an apparatus, a device, and a storage medium. The method comprises: a first access network device receiving a first message sent by a first core network device; the first message being used to request, from the first access network device, an access network resource for establishing a voice session of a terminal device; the first access network device sending a second message to a second access network device; the second message being used to request, from the second access network device, an access network resource for establishing a voice session; There is a dual connection between the terminal device and the first access network device and the second access network device, thereby improving the reliability of a mobile communication system.

Description

Voice session establishing method, device, device and storage medium

Technical field

The present application relates to the field of communications technologies, and in particular, to a voice session establishing method, apparatus, device, and storage medium.

Background technique

At present, the fourth generation (4 Generation, 4G) mobile communication system is gradually evolving to the fifth generation (5 Generation, 5G) New Radio (NR) mobile communication system. The voice service is one of the main services in the mobile communication system. Therefore, how to implement the voice service in the 5G system has become an urgent problem to be solved.

In the prior art, when a terminal device accessing the 5G NR system performs a voice session, the 5G NR system switches all services of the terminal device to the 4G system. All services of the terminal device include voice services and data services of the terminal device. Since all services of the terminal device, such as data services, are switched to the 4G system, the data services of the terminal device cannot be transmitted at a high rate of 5G NR, and even some data services are interrupted due to 4G resource limitation, thereby reducing the mobile communication system. Reliability.

Summary of the invention

The application provides a voice session establishing method, device, device and storage medium, thereby improving the reliability of the mobile communication system.

In a first aspect, the present application provides a voice session establishing method, including: a first access network device receives a first message sent by a first core network device; and a first message is used to request a first access network device to establish a terminal device. The access network resource of the voice session; the first access network device sends a second message to the second access network device; the second message is used to request the second access network device to establish an access network resource for the voice session; There is a dual connection between the terminal device and the first access network device and the second access network device.

The beneficial effects of the present application include: the present application is based on a dual connectivity application scenario. When the first core network device does not support the voice session function or even supports the voice session function, the first access network device may only switch the voice session of the terminal device. To the second access network device, other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

Optionally, the first access network device is a dual-connected primary node, and the second access network device is a dual-connected secondary node.

Optionally, before the first access network device sends the second message to the second access network device, the method further includes: if the secondary node currently accessed by the terminal device supports the voice session function, the first access network device determines the current connection The secondary node that is entered is the second access network device; or,

If the secondary node currently accessed by the terminal device does not support the voice session function, the first access network device controls the terminal device to disconnect from the currently accessed secondary node, and selects the access network device that supports the voice session function as the second Access network equipment; or,

If the terminal device does not currently have a secondary node, the first access network device selects an access network device that supports the voice session function. Prepared as a second access network device.

The beneficial effects of the present application include: the present application provides a method for how a first access network device determines a second access network device, and after the first access network device determines the second access network device, the first access network The device can only switch the voice session of the terminal device to the second access network device, and the other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

Optionally, before the first access network device sends the second message to the second access network device, the method further includes:

The first access network device determines, according to the condition, whether the access network resource of the voice session is established by the second access network device, where the condition includes at least one of the following: the voice preference information of the terminal device, the capability information of the terminal device, and the first The capability information of the access network device, the capability information of the second access network device, and the local policy of the first access network device;

Correspondingly, the first access network device sends the second message to the second access network device, including:

The first access network device determines that the access network resource of the voice session is established by the second access network device, and the first access network device sends the second message to the second access network device.

The beneficial effects of the present application include: The present application provides how to determine whether an access network resource of a voice session is established by a second access network device according to conditions, after determining that the access network resource of the voice session is established by the second access network device The first access network device can only switch the voice session of the terminal device to the second access network device, and the other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

Optionally, before the first access network device determines, according to the condition, the access network resource of the voice session is established by the second access network device, the method further includes: acquiring, by the first access network device, voice preference information and/or the terminal device Device capability information.

Optionally, before the first access network device receives the first message sent by the first core network device, the method further includes: the first access network device sending the first indication information to the first core network device. The first indication information is used to indicate at least one of the following: the first access network device supports the voice session function, the terminal device supports the voice session function, the first access network device supports the dual connectivity function, and the terminal device supports the dual connectivity function and The terminal device can access the secondary node that supports the voice session function.

Optionally, the method further includes: the first access network device sends a third message to the first core network device; the third message is used to indicate that the voice session is established between the second access network device and the second core network device. User plane connection.

Or the first access network device sends a fourth message to the second access network device; the fourth message is used to indicate that a user plane connection is established for the voice session between the second access network device and the first access network device.

Advantageous effects of the present application include: The present application provides how to establish a user plane connection for a voice session, thereby implementing transmission of a voice session.

Optionally, the first access network device supports the first radio access technology, and the second access network device supports the second radio access technology.

Optionally, the first message includes quality of service QoS information of the voice session; and/or the second message includes QoS information or access network resource information, and the access network resource information is determined according to the QoS information.

Optionally, the access network resource is a data radio bearer DRB.

In a second aspect, the present application provides a voice session establishing method, including: determining, by a first core network device of a communication network, that a first access network device of the communication network supports a voice session function and/or a terminal device supports a voice session function; The core network device sends the second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports the voice session function.

The function of the first access network device to support the voice session includes: the first access network device supports the function of establishing a voice session through the dual connection, and/or the terminal device supports the voice session function, and the terminal device supports the establishment by using the dual connection. The function of a voice conversation.

The beneficial effects of the present application include: when the first core network device determines that the communication network supports the voice session function, the first core network device sends the second indication information to the terminal device, so that the terminal device performs the voice session establishment process or the Selecting to register to the communication network to establish a voice session subsequently. Correspondingly, when the first core network device determines that the communication network does not support the voice session function, the first core network device does not send the second indication information to the terminal device, thereby The terminal device does not need to try to establish a voice session by using the communication network, thereby improving the efficiency of the terminal device to establish a voice session.

Optionally, the dual connectivity is a dual connectivity between the terminal device and the first access network device and the second access network device; wherein the first access network device is a dual-connected primary node, and the second access network device is As a dual-connected secondary node, the second access network device is configured to establish an access network resource for the voice session.

Optionally, the first core network device of the communication network determines that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function, and the first core network device receives the first access network device. The first indication information is sent, where the first indication information is used to indicate at least one of the following: the first access network device supports the voice session function, the terminal device supports the voice session function, and the first access network device supports the dual connectivity function, The terminal device supports the dual connectivity function and the terminal device can access the secondary node supporting the voice session function.

or,

The core network device determines, according to the pre-configuration information, that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function.

Optionally, the first indication information is carried in the fifth message sent by the first access network device to the first core network device, where the fifth message is used to implement at least one of the following: requesting to establish the first access network device A connection with the first core network device, an indication of the capabilities of the first access network device, and an indication of the capabilities of the terminal device.

The following describes the principle and technical effects of the method and the technical solutions of the first aspect, which are not described here.

In a third aspect, the application provides a voice session establishing apparatus, including:

The receiving module is configured to receive a first message sent by the first core network device, where the first message is used to request the voice session establishing device to establish an access network resource of the voice session of the terminal device.

And a sending module, configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session.

There is a dual connection between the terminal device and the voice session establishing device and the second access network device.

The following describes the principle and technical effects of the method of the second aspect and the optional mode of the second aspect, which are not described here.

In a fourth aspect, the application provides a voice session establishing apparatus, including:

a determining module, configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

a sending module, configured to send second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports the voice session function;

The first access network device supports the voice session function, and the first access network device supports establishing through the dual connection. The function of the voice session, and/or the terminal device supporting the voice session function includes: the terminal device supports the function of establishing a voice session through the dual connection.

The following describes the access network device. The implementation principle and technical effects can refer to the method involved in the first aspect and the principle and technical effects of the optional mode in the first aspect, and details are not described herein again.

In a fifth aspect, the application provides an access network device, where the access network device is a first access network device, and the first access network device includes:

a receiver, configured to receive a first message sent by the first core network device, where the first message is used to request, by the first access network device, an access network resource that establishes a voice session of the terminal device;

a transmitter, configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session;

There is a dual connection between the terminal device and the first access network device and the second access network device.

The following describes the core network device. The implementation principle and technical effects can refer to the method involved in the second aspect and the principle and technical effects of the optional mode in the second aspect, and details are not described herein again.

In a sixth aspect, the application provides a core network device, where the core network device is a first core network device, including:

a processor, configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

a transmitter, configured to send second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports the voice session function;

The function of the first access network device to support the voice session includes: the first access network device supports the function of establishing a voice session through the dual connection, and/or the terminal device supports the voice session function, and the terminal device supports the voice establishment through the dual connection. The function of the session.

In a seventh aspect, the present application provides a computer program product, when a computer program product is run on a first access network device, causing the first access network device to perform any of the first aspect and the optional aspect of the first aspect. One way.

In an eighth aspect, the application provides a computer storage medium, including instructions, when the instruction is run on the first access network device, causing the first access network device to perform the optional manner as in the first aspect and the first aspect Any of the methods.

In a ninth aspect, the present application provides a computer program product, when the computer program product is run on a first core network device, causing the first core network device to perform any one of the second aspect and the second aspect. Methods.

In a tenth aspect, the application provides a computer storage medium, including instructions, when the instruction is run on the first core network device, causing the first core network device to perform any one of the second aspect and the second aspect The method of the item.

The present application provides a voice session establishing method, apparatus, device, and storage medium. The method includes: a first access network device receives a first message sent by a first core network device; and a first message is used to the first access network. The device requests to establish an access network resource of the voice session of the terminal device; the first access network device sends a second message to the second access network device; and the second message is used to request the second access network device to establish a voice session. The network access resource; wherein the terminal device has a dual connection with the first access network device and the second access network device. That is, based on the dual-connection application scenario, when the first core network device does not support the voice session function or even supports the voice session function, the first access network device may only switch the voice session of the terminal device to the second access network device. The other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

DRAWINGS

FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application;

2 is an interaction flowchart of a voice session establishing method according to an embodiment of the present application;

FIG. 3 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure;

FIG. 4 is an interaction flowchart of a voice session establishing method according to an embodiment of the present application;

FIG. 5 is an interaction flowchart of a voice session establishing method according to still another embodiment of the present application;

FIG. 6 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a voice session establishing apparatus 70 according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a voice session establishing apparatus 80 according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a first access network device 90 according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a first core network device 100 according to an embodiment of the present application.

Detailed ways

Currently, when a terminal device accessing the 5G NR system performs a voice session, the access network device in the 5G NR system switches all services of the terminal device to the 4G system. All services of the terminal device include voice services and data services of the terminal device. Since all services of the terminal device, such as data services, are switched to the 4G system, the data services of the terminal device cannot be transmitted at a high rate of 5G NR, and even some data services are interrupted due to 4G resource limitation, thereby reducing the mobile communication system. Reliability.

It should be noted that the above technical problems may exist for any two communication systems, for example, a mobile communication system with higher efficiency than 5G NR transmission may occur in the future, and a terminal device accessing the mobile communication system is in a voice conversation. The mobile communication system switches all services of the terminal device to a 4G mobile communication system, a 3rd generation (3 Generation) mobile communication system, a 2nd generation (2 Generation) mobile communication system, or a wireless local area network (Wireless Local) Area Networ, WLAN), etc. Based on this, the access network device involved in the present application may be a Global System of Mobile communication (GSM) or a Base Transceiver Station (BTS) in Code Division Multiple Access (CDMA). It can also be a base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA), or it can be Long Term Evolution (LTE) or Enhanced Long Term Evolution (eLTE). An evolved base station (eNB), or a next generation-evolved NodeB (ng-eNB), or an access point (AP) or a relay station in the WLAN. It may be gNB or the like in the 5G NR, and is not limited herein.

Additionally, the terminal device referred to in this application may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connectivity, or other processing device that is connected to a wireless modem. The terminal device can communicate with at least one core network via a Radio Access Network (RAN). The terminal device may be a mobile terminal such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device. Exchange voice and/or data with a wireless access network. The terminal device may also be referred to as a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile Station, a Remote Station, an Access Point, and a remote device. A remote terminal, an access terminal, a user terminal, a user agent, or a user equipment are not limited herein.

Further, in order to solve the above technical problem, the present application provides a voice session establishing method, apparatus, device, and storage medium. FIG. 1 is a schematic diagram of an application scenario according to an embodiment of the present disclosure. Specifically, as shown in FIG. 1 , the terminal device 11 has dual connectivity with the first access network device 12 and the second access network device 13 (Dual Connectivity, DC). The so-called "dual connection" means that on the one hand, the terminal device 11 establishes a wireless connection with the first access network device 12, such as a Radio Resource Control (RRC) connection; on the other hand, the terminal device 11 and The second access network device 13 also establishes a wireless connection. For example, the RRC connection, or the terminal device 11 can receive a Protocol Data Unit (PDU) from the second access network device 13 through the first access network device 12. It can be seen that the dual connection enables the terminal device 11 to use the radio resources provided by the first access network device 12 and the radio resources provided by the second access network device 13.

As shown in FIG. 1, the first access network device 12 and the second access network device 13 are respectively a master node (MN) and a secondary node (SN) in a dual connection, wherein at least the MN is connected. The core network (CN) 14 is connected to the core network (CN) 14 (as shown in FIG. 1 , the second access network device 13 and the CN 14 are connected by a “dotted line”, indicating that the second access network device 13 passes the first access network device. 12 accessing CN14), so that the terminal device performs non-access stratum (NAS) signaling interaction with the CN through the MN.

Optionally, the first access network device 12 supports the first radio access technology, and the second access network device 13 supports the second radio access technology. For example, the first access network device 12 supports the 5G NR technology, and the second access network device 13 supports the 4G technology. In this case, the first access network device 12 can be a gNB, and the second access network device 13 can be ng-eNB. The second access network device 13 is connected to the first access network device 12 via an Xn interface. At least the first access network device 12 is connected to a Next Generation Core (NGC) to enable the terminal device to perform NAS signaling interaction with the NGC through the first access network device 12.

Based on the application scenario shown in FIG. 1 or the application scenario similar to FIG. 1, the following describes the voice session establishment method, device, device, and storage medium.

Embodiment 1

FIG. 2 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure. As shown in FIG. 2, the method includes the following steps:

Step S201: The first access network device receives the first message sent by the first core network device.

The first message is used to request the first access network device to establish an access network resource (access network resource) of the voice session of the terminal device. Optionally, the first message may be an N2 interface session request in the prior art. (N2Session Request). The access network resource is also referred to as a radio resource. The access network resource in the present application may be a Data Radio Bearer (DRB), which will not be described below.

Optionally, the first message includes: N1 interface session management information and N2 interface session management information; or the first message includes: N1 interface session management information and Protocol Data Unit Session Identity (PDU Session ID) , Quality of Service Profile (QoS Profile) and other parameters. The QoS profile includes QoS information of the voice session, such as a fifth generation quality of service identity (5QI), a guaranteed bit rate (GBR), or a guaranteed flow bit rate (Guaranteed Flow Bit Rate, GFBR) and so on.

The N1 interface session management information includes a PDU session modification command (Session Modification Command), and the PDU session modification command includes parameters such as a PDU Session ID and a QoS rule.

The N2 interface session management information includes parameters such as PDU Session ID and QoS Profile.

It should be noted that the N1 interface session management information and the N2 interface session management information are all prior art information, which is not limited in this application.

The first core network device may be an Access and Mobility Management Function (AMF) entity or a network device having similar functions to the AMF entity.

Step S202: The first access network device sends a second message to the second access network device.

The second message is used to request the second access network device to establish an access network resource of the voice session. Optionally, the second message may be a SN Addition Request or a SN Modification Request.

Optionally, the second message includes the foregoing QoS information or access network resource information. The access network resource information is configuration information of the DRB, and the configuration information of the DRB is determined by the first access network device according to the QoS information and the radio resource information of the second access network device.

The second access network device has a voice session function. In the present application, the term "the second access network device has the voice session function" means that the terminal device can access or perform the voice session service through the second access network device, or the second access network device supports the establishment of the transmission. Voice access network resources.

Step S203: The second access network device establishes an access network resource for the voice session.

Optionally, the second access network device sends an RRC connection reconfiguration message to the terminal device by using the first access network device, and after receiving the RRC Connection Reconfiguration message, the terminal device establishes support with the second access network device. The DRB that transmits voice data.

Optionally, the second access network device sends the RRC Connection Reconfiguration message to the terminal device by using the first access network device, where: when the second message is a secondary node increase request (SN Addition Request) or a secondary node modification request (SN) In the case of the Modification Request, the second access network device sends a SN Addition Request Acknowledge or a SN Modification Request Acknowledge to the first access network device, where the secondary node The increase request acknowledgement or the secondary node modification request acknowledgement includes: the RRC Connection Reconfiguration message.

The present application provides a voice session establishing method, including: first, a first access network device receives a first message sent by a first core network device; and the first message is used to request the first access network device to establish a terminal device. An access network resource of the voice session; secondly, the first access network device sends a second message to the second access network device; the second message is used to request the second access network device to establish an access network resource of the voice session . There is a dual connection between the terminal device and the first access network device and the second access network device. That is, the present application is based on the dual-connection application scenario. When the first core network device does not support the voice session function or even supports the voice session function, the first access network device may only switch the voice session of the terminal device to the second access network. The device, while other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

Embodiment 2

Optionally, before the step S202, the voice session establishing method further includes: determining, by the first access network device, the second access network device. The method for determining, by the first access network device, the second access network device may be classified into the following three situations:

Case 1. If the secondary node currently accessed by the terminal device supports the voice session function, the first access network device determines that the secondary node currently accessed is the second access network device.

The term “current” refers to a moment before the first access network device determines the second access network device. The so-called "secondary node currently accessed by the terminal device supports the voice session function" means that the terminal device can pass the currently accessed secondary node. To access or perform voice session services, or to refer to the currently accessed secondary node to support the establishment of access network resources for transmitting voice.

Step S202 is described with respect to case 1: In this case, the second message may be a SN Modification Request in a SN Modification process initiated by the first access network device.

Case 2: If the secondary node currently accessed by the terminal device does not support the voice session function, the first access network device controls the terminal device to disconnect from the currently accessed secondary node, and selects the access network device that supports the voice session function. As a second access network device;

The so-called "if the secondary node currently accessed by the terminal device does not support the voice session function" means that the terminal device cannot access or perform the voice session service through the currently accessed secondary node, or the secondary node that is currently accessed does not support the voice node. Establish access network resources for transmitting voice.

The first access network device controls the terminal device to disconnect from the currently accessed secondary node, and the first access network device sends a disconnection indication message to the terminal device, so that the terminal device disconnects from the currently accessed secondary node. the connection between.

or,

The first access network device sends a secondary node release request (SN Release Request) message to the currently accessed secondary node, so that the currently accessed secondary node disconnects from the terminal device, including between the release device and the terminal device. Wireless resources.

or,

The terminal device sends a disconnection request message to the first access network device, where the disconnect request message is used to request to determine whether the connection between the terminal device and the currently accessed secondary node can be disconnected; then the first access network device is configured according to The current network status determines whether to agree to disconnect the terminal device from the currently accessed secondary node, where the network status includes: network bandwidth, network transmission rate, and network transmission between the terminal device and the currently accessed secondary node. Power, etc. Finally, the first access network device sends a disconnection response message to the terminal device, where the message is used to indicate whether the terminal device can disconnect the connection between the terminal device and the currently accessed secondary node.

or,

The currently accessed secondary node sends a disconnection request message to the first access network device or the terminal device, where the disconnect request message is used to request to determine whether the connection between the terminal device and the currently accessed secondary node can be disconnected; The first access network device or the terminal device determines whether to agree to disconnect the terminal device from the currently accessed secondary node according to the current network state, where the network state includes: between the terminal device and the currently accessed secondary node. Network bandwidth, network transmission rate, and network transmission power. The first access network device or the terminal device sends a disconnection response message to the currently accessed secondary node, where the message is used to indicate whether the currently accessed secondary node can disconnect the terminal device from the currently accessed secondary node. connection.

Further, the first access network device selects the access network device that supports the voice session function as the second access network device, and the first access network device determines whether the at least one access network device supports the voice session function, and One of the at least one access network device selects an access network device that supports a voice session function as the second access network device. The at least one access network device may include: an access network device in a neighboring cell determined by the first access network device according to the measurement report reported by the terminal device, or a pre-configured access network device in the first access network device Or an access network device in a neighboring cell pre-configured in the first access network device. The at least one access network device and the first access network device can communicate through an interface (eg, an Xn in a 5G system).

Step S202 is described with respect to case 2: in this case, the second message may be a secondary node increase request (SN Addition Request) in the "Change of Secondary Node" process initiated by the first access network device. ) message.

Case 3: If the secondary device does not currently have a secondary node, the first access network device selects the access network device that supports the voice session function as the second access network device.

The terminal device does not currently have a dual-connection state, and the terminal device is not in the dual-connection state. The terminal device only establishes a wireless connection with the first access network device, that is, the terminal device uses only the access network of the first access network device. Resources.

Step S202 is described with respect to case 3: in this case, the second message may be a secondary node increase request in the "SN Addition" process initiated by the first access network device to the second access network device ( SN Addition Request) message.

The present application provides a method for how a first access network device determines a second access network device. After the first access network device determines the second access network device, the first access network device may only use the terminal device. The voice session is switched to the second access network device, and other services of the terminal device, such as data services, are not switched, thereby improving the reliability of the mobile communication system.

Embodiment 3

Optionally, before the step S202 or before the first access network device determines the second access network device, the method further includes: determining, by the first access network device, whether the voice is established by the second access network device according to the condition The access network resource of the session; wherein the condition includes at least one of: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, capability information of the second access network device, and a local policy of the first access network device; correspondingly, the step S202 includes: the first access network device determines that the second access network device establishes the access network resource of the voice session, and the first access network device The second access network device sends a second message.

Optionally, the voice preference information of the terminal device is used to indicate that the preference of the terminal device is: performing a voice session only through the NR or preferentially performing a voice session through the NR.

or,

The voice preference information of the terminal device is used to indicate that the terminal device's preference is to perform a voice session only through an Evolved-Universal Terrestrial Radio Access (E-UTRA) or preferentially through E-UTRA.

Optionally, the capability information of the terminal device is used to indicate that the terminal device only supports the voice session through the NR, or only supports the voice session through the E-UTRA, or supports the voice session through the NR and the E-UTRA.

Optionally, the capability information of the first access network device is used to indicate whether the first access network device supports access network resources for establishing a voice session.

Optionally, the capability information of the second access network device is used to indicate whether the second access network device supports the access network resource for establishing a voice session.

Optionally, the local policy of the first access network device is used to indicate that when the first access network device cannot support the establishment of the voice conference When accessing the network resource, whether to request the second access network device to establish an access network resource of the voice session, or reject the request from the core network to establish an access network resource of the voice session.

Further, the first access network device determines, according to the condition, whether the access network resource of the voice session is established by the second access network device, specifically:

If the condition includes only the voice preference information of the terminal device, the voice preference information of the terminal device indicates that the terminal device has the preference of: only supporting the voice session through the E-UTRA, and the second access network device is the eNB or the ng- The eNB, the first access network device may determine an access network resource for establishing a voice session by the second access network device.

If the condition includes only the capability information of the terminal device, the capability information of the terminal device indicates that the terminal device only supports the voice session through the E-UTRA, and the second access network device is the eNB or the ng-eNB, the first connection The network access device may determine an access network resource for establishing a voice session by the second access network device.

If the condition includes only the capability information of the first access network device, the capability information of the first access network device indicates that the first access network device does not support the access network resource for establishing the voice session, and the second access network The device supports the establishment of the access network resource of the voice session, and the first access network device can determine the access network resource for establishing the voice session by the second access network device.

If the condition includes only the capability information of the second access network device, and the capability information of the second access network device indicates that the second access network device supports the establishment of the access network resource for transmitting the voice, the first access network device An access network resource for establishing a voice session by the second access network device can be determined.

If the condition includes only the local policy of the first access network device, the local policy of the first access network device indicates that when the first access network device cannot support the access network resource for establishing the voice session, the second access When the network access device requests to establish an access network resource of the voice session, the first access network device may determine, by the second access network device, the access network resource for establishing the voice session.

It should be noted that, when the conditions include: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, capability information of the second access network device, and the first access network device When there are multiple items in the local policy, the first access network device may select the item with the highest priority, and determine whether the access network resource of the voice session is established by the second access network device according to the item. For example, if the priority of the voice preference information of the terminal device is the highest, the first access network device may determine, according to the voice preference information of the terminal device, whether the access network resource of the voice session is established by the second access network device.

The present application determines the priority of the voice preference information of the terminal device, the capability information of the terminal device, the capability information of the first access network device, the capability information of the second access network device, and the local policy of the first access network device. , no restrictions. In addition, when the condition includes multiple items, how the first access network device determines whether the access network resource for establishing the voice session by the second access network device is not limited to the above method.

The present application provides how to determine whether an access network resource of a voice session is established by a second access network device according to conditions, and after determining that the access network resource of the voice session is established by the second access network device, the first access network device The voice session of the terminal device can be switched only to the second access network device, and other services of the terminal device, such as data services, are not switched, thereby improving the reliability of the mobile communication system.

Embodiment 4

On the basis of the third embodiment, the method further includes: before the first access network device determines, according to the condition, that the second access network device establishes the access network resource of the voice session, the method further includes: the first access network device Obtaining voice preference information of the terminal device and/or capability information of the terminal device.

Optionally, the terminal device directly sends its voice preference information and/or capability information to the first access network device.

or,

The terminal device sends its voice preference information and/or capability information to the first core network device, and then the first core network device sends the information to the first access network device.

or,

Before the voice session is established, the first core network device sends the voice preference information and/or capability information of the terminal device to a Service Management Funcation (SMF). When the voice session is established, the SMF initiates the message to the first core network device. The N1N2 interface message transmission service request (Namf_Communication_N1N2MessageTransfer) message carries the voice preference information and/or capability information of the terminal device, and finally the first core network device forwards the Namf_Communication_N1N2 MessageTransfer message to the first access network device.

Specifically, FIG. 3 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure. As shown in FIG. 3, the method includes the following steps:

Step S301a: The terminal device sends a registration request to the first core network device.

The registration request carries voice preference information of the terminal device and/or capability information of the terminal device.

Step S302a: The first core network device sends the voice preference information of the terminal device and/or the capability information of the terminal device to the first access network device.

or,

Step S301b: The first access network device sends a request message to the terminal device.

The request message is used to request to acquire voice preference information of the terminal device and/or capability information of the terminal device.

Step S302b: The terminal device sends a capability report or an information report of the terminal device to the first access network device.

The capability report or information report of the terminal device carries voice preference information of the terminal device and/or capability information of the terminal device.

or,

Step S301c: The first core network device sends a request message to the terminal device.

Step S302c: The terminal device sends a capability report or an information report of the terminal device to the first core network device.

Step S303c: The first core network device sends the voice preference information of the terminal device and/or the capability information of the terminal device to the first access network device.

It should be noted that, the first access network device does not limit the voice preference information and/or the capability information of the terminal device.

The first access network device can obtain the voice preference information of the terminal device and/or the capability information of the terminal device, and the first access network device can be based on the voice preference of the terminal device. Information and/or capability information of the terminal device determines whether the access network resource of the voice session is established by the second access network device.

Embodiment 5

On the basis of any one of the first embodiment to the fourth embodiment, the present application further provides a method for establishing a user plane connection, which is specifically as follows:

FIG. 4 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure, as shown in FIG. 4, the method is Including the following steps:

An alternative method:

Step S401a: The first access network device sends a third message to the first core network device.

Optionally, the step S401a may be: the second access network device sends a third message to the first core network device;

The third message is used to indicate that a user plane connection is established between the second access network device and the second core network device for the voice session. Optionally, the third message includes the PDU Session ID and the identifier of the second access network device. , QoS information of voice sessions, etc. The third message may be a PDU Session Path Update Request message, where the PDU Session Path Update Request message is also referred to as a Path Switch Request message.

Step S402a: The first core network device sends a sixth message to the second access network device according to the third message.

Wherein, step S402a includes two optional methods:

Optionally, the first core network device directly sends the sixth message to the second access network device according to the third message.

Option 2: The first core network device sends a sixth message to the first access network device according to the third message, and the first access network device forwards the sixth message to the second access network device.

The sixth message is also used to indicate that a user plane connection is established for the voice session between the second access network device and the second core network device. Optionally, the sixth message includes: CN Tunnel Information, such as a core network tunnel identifier. The sixth message may be the same as or different from the third message. The sixth message may be a PDU Session Path Update Request Ack message, and the PDU Session Path Update Request Ack message is also referred to as a Path Switch Request Ack message.

Step S403a: A user plane connection is established between the second access network device and the second core network device for the voice session.

The second access network device establishes a tunnel for transmitting a voice session according to the core network tunnel information in the sixth message and the second core network device. The second access network device and the second core network device may establish a user plane connection for the voice session by using the prior art, which is not described herein again.

Optionally, the second core network device may be a User Plane Function (UPF) or a network device having a similar function to the UPF.

Another alternative:

Step S401b: The first access network device sends a fourth message to the second access network device.

The fourth message is used to indicate that a user plane connection is established for the voice session between the second access network device and the first access network device. The user plane connection of the voice session is established between the first access network device and the second core network device.

Step S402b: A user plane connection is established between the second access network device and the first access network device for the voice session.

The second access network device and the first access network device can establish a user plane connection for the voice session by using the prior art, which is not described in this application.

In summary, the present application provides how to establish a user plane connection for a voice session, thereby implementing transmission of the voice session.

Embodiment 6

On the basis of any one of the first embodiment to the fifth embodiment, optionally, the voice session establishing method further includes: if the terminal device calls a proxy session control function entity (Proxy-Call Session Control Function, P-CSCF) Send an Invite message, and the S-CSCF sends a 183Progress message to the P-CSCF, as follows:

FIG. 5 is an interaction flowchart of a voice session establishing method according to another embodiment of the present application. As shown in FIG. 5, the method includes the following steps:

Step S501: The terminal device sends an Invite message to a Proxy-Call Session Control Function (P-CSCF).

Step S502: The P-CSCF sends an invite message to a Serving-Call Session Control Function (S-CSCF);

The invitation message is used by the local terminal device (the terminal device refers to the local terminal device) to invite the peer terminal device to participate in the voice session. The invitation message includes: the identifier and location of the peer end. Descriptive information of the voice session, etc., the description information includes at least one of the following: a media type that the terminal device can send or receive (such as a media type of the voice session is a voice type), a bandwidth/transmission rate, a codec mode, and some other parameter. It should be noted that the invitation message is an invitation message in the existing Session Initiation Protocol (SIP), which is not described in this application.

Further, on the one hand, the S-CSCF may send the invite message to other network function entities in the Internet Protocol Multimedia Subsystem (IMS), such as Service Centralization and Continuity Application. Server, SCC AS), so that the SCC AS processes the invitation message. On the other hand, the S-CSCF may send the invite message to the peer end, that is, the invitation is sent to the IMS network function entity corresponding to the peer terminal device, and the IMS network function entity sends the invite message to the peer terminal device.

Step S503: After receiving the 183 Progress message sent by the peer end, the S-CSCF sends the 183 Progress message to the P-CSCF.

The 183Progress message is used to indicate that the peer terminal device has received the invitation message sent by the local end, and the 183Progress message includes: the session media negotiation information provided by the peer end according to the invitation message, for example, the media type that the peer end can send or receive ( For example, the media type of the voice session is voice type), bandwidth/transmission rate, codec mode, and other parameters.

Step S504: The P-CSCF initiates a request for generating a policy authorization service (Npcf_PolicyAuthorization_Create) to a Packet Control Function (PCF);

The Npcf_PolicyAuthorization_Create includes parameters such as an IP address and a media description information of the local terminal device, where the media description information includes: a session media type determined by the P-CSCF according to the 183Progress message and the invite message (eg, the media type of the voice session is a voice type) , bandwidth / transmission rate, codec mode and other parameters.

Step S505: The PCF initiates a session management policy control update notification service request (Npcf_SM Policy Control_Update Notify) to the SMF;

The Npcf_SM Policy Control_Update Notify includes: a QoS rule (QoS rule) of the voice session (ie, a protocol data unit session (PDU Session)) determined by the PCF according to the Npcf_PolicyAuthorization_Create in S204. The QoS rule includes a Quality of Service Flow Identifier (QFI) and QoS information, and the QoS information may be 5QI, GBR, or GFBR.

Step S506: The SMF sends an N1N2 interface message transmission service request (Namf_Communication_N1N2MessageTransfer) to the first core network device.

The Namf_Communication_N1N2MessageTransfer includes: N2 interface session management information sent by the SMF to the first access network device and N1 interface session management information sent by the SMF to the terminal device.

The N1 interface session management information and the N2 interface session management information are described in the corresponding content in step S201. This application will not go into details here.

Step S507: The first access network device receives the first message sent by the first core network device.

The step S507 is the same as the step S201, and the content and effect of the present application are not described herein again.

Step S508: The first access network device sends a second message to the second access network device.

The step S508 is the same as the step S202, and the content and effect of the present application are not described herein again.

Optionally, before step S608, the method further includes: determining, by the first access network device, the second access network device. The first access network device determines that the second access network device can be divided into the following three situations: the three cases are the same as the three cases described in the second embodiment, and the content and the effect of the application are not described herein again.

Further, before the step S508 or before determining the second access network device, optionally, the method further includes: determining, by the first access network device, whether the voice session is established by the second access network device according to the condition. The network access resource includes: at least one of the following: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, capability information of the second access network device, and the first connection a local policy of the network access device; correspondingly, the step S508 includes: the first access network device determines that the access network resource of the voice session is established by the second access network device, and the first access network device connects to the second access network device The network access device sends a second message. For details and effects, refer to Embodiment 3.

Step S509a: The first access network device sends a third message to the first core network device.

Step S510a: The first core network device sends a sixth message to the second access network device according to the third message.

Step S511a: establishing a user plane connection between the second access network device and the second core network device for the voice session;

or,

Optional step S509b: the first access network device sends a fourth message to the second access network device;

Optional step S510b: establishing a user plane connection for the voice session between the second access network device and the first access network device.

The steps S509a to S511a are the same as the steps S401a to S402b, and the contents and effects thereof are not described herein again.

Similarly, the steps S509b to 510b are the same as the steps S401b to 402b, and the contents and effects thereof are not described herein again.

Step S512: The terminal device sends a NAS message to the first core network device.

The NAS message carries a voice session identifier (PDU Session ID) and indication information, which is used to indicate that the voice session has been successfully established. The indication information may be a PDU Session Modification Command Ack, and the indication information includes the PDU Session ID and the like.

Step S513: The first access network device sends an N2 interface session response (N2Session Response) to the first core network device.

The N2 interface session response includes parameters such as the PDU Session ID and the access network tunnel information (AN Tunnel Info). If the S509a to S511a are performed, the access network tunnel information may be the access network tunnel information allocated by the second access network device; if the S509b to S510b is performed, the access network tunnel information may be the first access Access network tunnel information assigned by the network device. The access network tunnel information may include parameters such as an access network tunnel identifier.

Step S514: The first core network device initiates an update session management context service request (Nsmf_PDUSession_UpdateSMContext) to the SMF;

The Nsmf_PDUSession_UpdateSMContext carries indication information indicating that the voice session has been successfully established.

Step S515: The SMF initiates an event notification (Nsmf_EventExposure_Notify) service request to the PCF;

The event notification service request is used to notify the PCF that the voice session has been successfully established.

Step S516: The PCF initiates a policy authorization notification service request (Npcf_PolicyAuthorization_Notify) or a policy authorization service response (Npcf_PolicyAuthorization_Create Response) to the P-CSCF;

The Npcf_PolicyAuthorization_Notify or Npcf_PolicyAuthorization_Create Response is used to notify the P-CSCF that the voice session has been successfully established.

Optional step S517: the P-CSCF sends a 183Progress message to the terminal device.

For information carried in the 183Progress message, refer to step S503, and the corresponding content and effect are not described herein again.

Optional step S518: the terminal device continues the voice session establishment process through the core network and the peer end.

The terminal device can continue to complete the establishment process of the voice session by using the existing technology through the core network and the peer end, which is not described in this application.

In summary, the present application provides a voice session establishing method, including: first, a first access network device receives a first message sent by a first core network device; and the first message is used to request to establish a first access network device. An access network resource of the voice session of the terminal device; secondly, the first access network device sends a second message to the second access network device; the second message is used to request the second access network device to establish a voice session. Network resources. There is a dual connection between the terminal device and the first access network device and the second access network device. That is, the present application is based on the dual-connection application scenario. When the first core network device does not support the voice session function or even supports the voice session function, the first access network device may only switch the voice session of the terminal device to the second access network. The device, while other services of the terminal device, such as data services, do not switch, thereby improving the reliability of the mobile communication system.

Example 7

On the basis of any one of the first embodiment to the sixth embodiment, the first core network device may determine that the first access network device of the communication network supports the voice session function and/or before the terminal device initiates the voice service. Whether the terminal device supports the voice session function to support the voice session function, and if the first core network device determines that the network device supports the voice session function, that is, the first access network device of the communication network supports the voice session function and/or the terminal device support. Whether the voice session function supports the voice session function, the first core network device indicates to the terminal device that the communication network supports the voice session function, so that the terminal device can initiate a voice service through the communication network, or enable the terminal device to select to register to the location. The communication network is used to initiate voice services through the communication network. The communication network is a communication network including a first core network device, a first access network device, and other network devices.

Specifically, FIG. 6 is an interaction flowchart of a voice session establishing method according to an embodiment of the present disclosure. As shown in FIG. 6, the method further includes the following steps:

Step S601: The first core network device determines that the first access network device supports the voice session function and/or the terminal device supports the voice session function.

The first access network device supports the voice session function, and the first access network device supports the function of establishing a voice session through the dual connection.

The terminal device supports the voice session function, and the terminal device supports the function of establishing a voice session through the dual connection.

Optionally, the first core network device receives the first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of the following: the first access network device supports the voice session function, The terminal device supports the voice session function, the first access network device supports the dual connection function, the terminal device supports the dual connection function, and the terminal device can be connected. A secondary node that supports the voice session feature.

The first indication information is carried in the fifth message sent by the first access network device to the first core network device. The fifth message is used to implement at least one of the following: requesting to establish the first access network device and the first A connection between core network devices indicating the capabilities of the first access network device and the capabilities of the indicating terminal device. Optionally, the fifth message may be an N2 message sent by the first access network device to the first core network device, such as an N2 interface request (N2Setup Request); or, when the first access network device is a gNB, the The fifth message may be a gNB Configuration Update message.

The capability of the first access network device includes that the first access network device supports the voice session function and/or the first access network device supports the dual connectivity function. The so-called first access network device supports the voice session function, which means that the terminal device can access or perform the voice session service through the first access network device, or the first access network device supports the establishment of the access network resource for transmitting the voice. Or the first access network device can serve as a dual-connected primary node, and control the second access network device to establish an access network resource for the voice session of the terminal device. The so-called first access network device supports the dual-connection function, which means that the terminal device establishes a dual connection with the first access network device and the second access network device, and the first access network device is the primary node in the dual connection.

The capability of the terminal device includes at least one of the following: the terminal device supports the voice session function, the terminal device supports the dual connectivity function, and the terminal device can access the secondary node supporting the voice session function. The terminal device supports the voice session function, which means that the terminal device supports establishing a voice session or the terminal device supports establishing a voice session through the dual connection, that is, the terminal device passes through the first access network device and/or the second access network device in the dual connection. The peer terminal device establishes a voice session.

Option 2: The core network device determines, according to the pre-configuration information, that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function.

Step S602: The first core network device sends the second indication information to the terminal device.

The second indication information is used to indicate that the communication network supports the voice conversation function. In the present application, the communication network supports the voice session function including the communication network supporting the dual-connection voice session function.

In the present application, when the first core network device determines that the communication network supports the voice session function, the first core network device sends the second indication information to the terminal device, so that the terminal device performs the voice session establishment process or selects the registration through the communication network. Go to the communication network to establish a voice session subsequently. Correspondingly, when the first core network device determines that the communication network does not support the voice session function, the first core network device does not send the second indication information to the terminal device, thereby causing the terminal device to There is no need to attempt to establish a voice session using the communication network, thereby improving the efficiency of establishing a voice session by the terminal device.

Example eight

FIG. 7 is a schematic structural diagram of a voice session establishing apparatus 70 according to an embodiment of the present disclosure. As shown in FIG. 7, the apparatus 70 includes:

The receiving module 71 is configured to receive a first message sent by the first core network device, where the first message is used to request the voice session establishing device to establish an access network resource of the voice session of the terminal device.

The sending module 72 is configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session.

Optionally, the voice session establishing device is a dual-connected master node, and the second access network device is a dual-connected secondary node.

Optionally, the voice session establishing apparatus 70 further includes:

The first determining module 73 is configured to determine that the secondary node currently accessed is the second access network device, if the secondary node currently accessed by the terminal device supports the voice session function.

or,

Also included is a control module 74 and a first selection module 75. The control module 74 is configured to: if the secondary node currently accessed by the terminal device does not support the voice session function, the control terminal device is disconnected from the currently accessed secondary node; the first selection module 75 is configured to select a voice session support function. The access network device acts as the second access network device.

or,

The second selection module 76 is further configured to: if the terminal device does not currently have a secondary node, select an access network device that supports the voice session function as the second access network device.

Optionally, the voice session establishing apparatus 70 further includes:

The second determining module 77 is configured to determine, according to the condition, whether the access network resource of the voice session is established by the second access network device.

The condition includes at least one of the following: voice preference information of the terminal device, capability information of the terminal device, capability information of the voice session establishing device, capability information of the second access network device, and a local policy of the voice session establishing device.

Correspondingly, if the second determining module 77 determines that the access network resource of the voice session is established by the second access network device, the sending module 72 sends the second message to the second access network device.

Optionally, the voice session establishing apparatus 70 further includes: an obtaining module 78, configured to acquire voice preference information of the terminal device and/or capability information of the terminal device.

Optionally, the sending module 72 is further configured to send the first indication information to the first core network device.

The first indication information is used to indicate at least one of the following: the voice session establishing device supports the voice session function, the terminal device supports the voice session function, the voice session establishing device supports the dual connection function, the terminal device supports the dual connection function, and the terminal device can be connected. A secondary node that supports the voice session feature.

Optionally, the sending module 72 is further configured to send a third message to the first core network device, where the third message is used to indicate that a user plane connection is established between the second access network device and the second core network device for the voice session. .

or,

The sending module 72 is further configured to send a fourth message to the second access network device, where the fourth message is used to indicate that a user plane connection is established between the second access network device and the voice session establishing device for the voice session.

Optionally, the voice session establishing device supports the first radio access technology, and the second access network device supports the second radio access technology.

Optionally, the access network resource is a data radio bearer DRB.

The present application provides a voice session establishing apparatus, which may be used to perform a voice session establishing method performed by the first access network device, and the implementation principle and technical effects thereof are similar to the principle and technical effects of the method. Let me repeat.

Example nine

FIG. 8 is a schematic structural diagram of a voice session establishing apparatus 80 according to an embodiment of the present disclosure. As shown in FIG. 8, the apparatus 80 includes:

The determining module 81 is configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function.

The sending module 82 is configured to send second indication information to the terminal device, where the second indication information is used to indicate the communication network branch Hold voice conversations.

Optionally, the dual connection is a dual connection between the terminal device and the first access network device and the second access network device.

The first access network device is a dual-connected primary node, the second access network device is a dual-connected secondary node, and the second access network device is configured to establish an access network resource for the voice session.

Optionally, the voice session establishing device 80 further includes:

The receiving module 83 is configured to receive the first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of the following: the first access network device supports the voice session function, and the terminal device supports the voice session. The function, the first access network device supports the dual connection function, the terminal device supports the dual connection function, and the terminal device can access the secondary node supporting the voice session function.

or,

The determining module 81 is specifically configured to determine, according to the pre-configuration information, that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function.

Optionally, the first indication information is carried in a fifth message sent by the first access network device to the voice session establishing device.

The fifth message is used to implement at least one of the following: requesting to establish a connection between the first access network device and the voice session establishing device, indicating the capability of the first access network device, and indicating the capability of the terminal device.

The present application provides a voice session establishing apparatus, which can be used to perform a voice session establishing method performed by the first core network device, and the implementation principle and technical effects thereof are similar to the principle and technical effects of the method. Narration.

Example ten

FIG. 9 is a schematic structural diagram of a first access network device 90 according to an embodiment of the present disclosure. As shown in FIG. 9, the first access network device 90 includes:

The receiver 91 is configured to receive a first message sent by the first core network device, where the first message is used to request the first access network device to establish an access network resource of the voice session of the terminal device.

The transmitter 92 is configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session.

Optionally, the first access network device 90 further includes: a processor 93.

The processor 93 is configured to determine that the secondary node currently accessed is the second access network device if the secondary node currently accessed by the terminal device supports the voice session function.

or,

The processor 93 is configured to: if the secondary node currently accessed by the terminal device does not support the voice session function, control the terminal device to disconnect from the currently accessed secondary node; and select the access network device that supports the voice session function as the second Access network equipment.

or,

The processor 93 is configured to select, as the second access network device, an access network device that supports the voice session function if the terminal device does not currently have a secondary node.

Optionally, the processor 93 is further configured to determine, according to the condition, whether the access network resource of the voice session is established by the second access network device.

The condition includes at least one of the following: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, capability information of the second access network device, and the first access network device Local strategy;

Correspondingly, if the processor 93 determines that the access network resource of the voice session is established by the second access network device, the transmitter 92 sends a second message to the second access network device.

Optionally, the processor 93 is further configured to acquire voice preference information of the terminal device and/or capability information of the terminal device.

Optionally, the transmitter 92 is further configured to send the first indication information to the first core network device.

The first indication information is used to indicate at least one of the following: the first access network device supports the voice session function, the terminal device supports the voice session function, the first access network device supports the dual connectivity function, and the terminal device supports the dual connectivity function and The terminal device can access the secondary node that supports the voice session function.

Optionally, the transmitter 92 is further configured to send a third message to the first core network device, where the third message is used to indicate that a user plane connection is established between the second access network device and the second core network device for the voice session. . or,

The transmitter 92 is further configured to send a fourth message to the second access network device, where the fourth message is used to indicate that a user plane connection is established for the voice session between the second access network device and the first access network device.

Optionally, the access network resource is a data radio bearer DRB.

The present application provides an access network device, which can be used to perform a voice session establishment method performed by the first access network device, and the implementation principle and technical effects thereof are similar to the principle and technical effects of the method. I won't go into details here.

Embodiment 11

FIG. 10 is a schematic structural diagram of a first core network device 100 according to an embodiment of the present disclosure. As shown in FIG. 10, the first core network device 100 includes:

The processor 101 is configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

The transmitter 102 is configured to send second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports the voice session function;

Optionally, the first core network device 100 further includes:

The receiver 103 is configured to receive first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of: the first access network device supports the voice session function, and the terminal device supports the voice session. The function, the first access network device supports the dual connection function, the terminal device supports the dual connection function, and the terminal device can access the secondary node supporting the voice session function.

or,

The processor 101 is specifically configured to determine, according to the pre-configuration information, that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function.

Optionally, the first indication information is carried in a fifth message sent by the first access network device to the first core network device.

The fifth message is used to implement at least one of the following: requesting to establish a connection between the first access network device and the first core network device, indicating the capability of the first access network device, and indicating the capability of the terminal device.

The present application provides a core network device, which can be used to perform a voice session establishment method performed by the first core network device. The implementation principle and technical effects are similar to the principles and technical effects of the method. Let me repeat.

The present application provides a computer program product that, when executed on a first access network device, causes a first access network device to perform a voice session establishment method as performed by the first access network device.

The application provides a computer storage medium, including instructions, when the instruction is run on the first access network device, causing the first access network device to perform a voice session establishment method performed by the first access network device.

The application provides a computer program product, when the computer program product runs on the first core network device, causing the first core network device to perform a voice session establishing method performed by the first core network device.

The application provides a computer storage medium, including instructions, when the instruction is run on the first core network device, causing the first core network device to perform a voice session establishment method performed by the first core network device.

Claims

A voice session establishing method, comprising:

The first access network device receives the first message sent by the first core network device, where the first message is used to request the first access network device to establish an access network resource of the voice session of the terminal device;

The first access network device sends a second message to the second access network device; the second message is used to request the second access network device to establish an access network resource of the voice session;

There is a dual connection between the terminal device and the first access network device and the second access network device.
The method according to claim 1, wherein the first access network device is the dual-connected primary node, and the second access network device is the dual-connected secondary node.
The method according to claim 1 or 2, wherein before the first access network device sends the second message to the second access network device, the method further includes:

If the secondary node currently accessed by the terminal device supports the voice session function, the first access network device determines that the currently accessed secondary node is the second access network device; or

If the secondary node currently accessed by the terminal device does not support the voice session function, the first access network device controls the terminal device to disconnect from the currently accessed secondary node, and selects a voice session support function. Access network device as the second access network device; or

If the terminal device does not currently have a secondary node, the first access network device selects an access network device that supports a voice session function as the second access network device.
The method according to any one of claims 1-3, wherein before the first access network device sends the second message to the second access network device, the method further includes:

Determining, by the first access network device, whether the access network resource of the voice session is established by the second access network device according to a condition;

The condition includes at least one of: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, capability information of the second access network device, and a local policy of the first access network device;

Correspondingly, the first access network device sends the second message to the second access network device, including:

The first access network device determines that the second access network device establishes an access network resource of the voice session, and the first access network device sends the second access network device to the second access network device Message.
The method according to claim 4, wherein the determining, by the first access network device, the access network resource of the voice session by the second access network device, according to the condition, further comprises:

The first access network device acquires voice preference information of the terminal device and/or capability information of the terminal device.
The method according to any one of claims 1-5, wherein before the first access network device receives the first message sent by the first core network device, the method further includes:

Transmitting, by the first access network device, first indication information to the first core network device;

The first indication information is used to indicate at least one of the following: the first access network device supports a voice session function, the terminal device supports a voice session function, and the first access network device supports a dual connectivity function. The terminal device supports a dual connectivity function and the terminal device can access a secondary node that supports a voice session function.
The method of any of claims 1-6, further comprising:

Transmitting, by the first access network device, a third message to the first core network device, where the third message is used to indicate that the voice is between the second access network device and the second core network device The session establishes a user plane connection; or,

Transmitting, by the first access network device, a fourth message to the second access network device, where the fourth message is used to indicate between the second access network device and the first access network device A user plane connection is established for the voice session.
Method according to any of claims 1-7, characterized in that

The first access network device supports a first radio access technology, and the second access network device supports a second radio access technology.
The method according to any one of claims 1-8, wherein the first message comprises quality of service QoS information of the voice session; and/or the second message comprises the QoS information or Incoming network resource information, the access network resource information is determined according to the QoS information.
The method according to any one of claims 1-9, wherein the access network resource is a data radio bearer DRB.
A voice session establishing method, comprising:

The first core network device of the communication network determines that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

The first core network device sends second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports a voice session function;

The function of the first access network device to support the voice session includes: the first access network device supports the function of establishing a voice session through the dual connection, and/or the terminal device supports the voice session function, including: The terminal device supports the function of establishing a voice session through dual connectivity.
The method according to claim 11, wherein the dual connection is a dual connection between the terminal device and the first access network device and the second access network device;

The first access network device is the dual-connected primary node, the second access network device is the dual-connected secondary node, and the second access network device is used for the voice The session establishes access network resources.
The method according to claim 11 or 12, wherein the first core network device of the communication network determines that the first access network device of the communication network supports a voice session function and/or the terminal device supports a voice session function ,include:

Receiving, by the first core network device, first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of: the first access network device supports a voice session a function, the terminal device supports a voice session function, the first access network device supports a dual connectivity function, the terminal device supports a dual connectivity function, and the terminal device can access a secondary node supporting a voice session function;

or,

The core network device determines, according to the pre-configuration information, that the first access network device of the communication network supports a voice session function and/or the terminal device supports a voice session function.
The method according to claim 13, wherein the first indication information is carried in a fifth message sent by the first access network device to the first core network device;

The fifth message is used to implement at least one of: requesting to establish a connection between the first access network device and the first core network device, indicating a capability of the first access network device, and Indicates the capabilities of the terminal device.
A method according to any one of claims 11-14, wherein

The first access network device supports a first radio access technology, and the second access network device supports a second radio access technology.
A voice session establishing device, comprising:

a receiving module, configured to receive a first message sent by the first core network device, where the first message is used to request the voice session establishing device to establish an access network resource of a voice session of the terminal device;

a sending module, configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session;

There is a dual connection between the terminal device and the voice session establishing device and the second access network device.
The apparatus according to claim 16, wherein said voice session establishing means is said dual-connected master node, and said second access network device is said dual-connected secondary node.
The device according to claim 16 or 17, further comprising:

a first determining module, configured to determine that the currently accessed secondary node is the second access network device, if the secondary node currently accessed by the terminal device supports a voice session function; or

The control module and the first selection module, wherein the control module is configured to control the terminal device and the current access if the secondary node currently accessed by the terminal device does not support the voice session function The secondary node is disconnected; the first selection module is configured to select an access network device that supports the voice session function as the second access network device; or

The method further includes: a second selecting module, configured to: if the terminal device does not currently have a secondary node, select an access network device that supports the voice session function as the second access network device.
The device according to any one of claims 16 to 18, further comprising:

a second determining module, configured to determine, according to a condition, whether an access network resource of the voice session is established by the second access network device;

The condition includes at least one of: voice preference information of the terminal device, capability information of the terminal device, capability information of the voice session establishing device, capability information of the second access network device, and the Local policy of the voice session establishing device;

Correspondingly, if the second determining module determines that the access network resource of the voice session is established by the second access network device, the sending module sends the second message to the second access network device. .
The device according to claim 19, further comprising:

And an obtaining module, configured to acquire voice preference information of the terminal device and/or capability information of the terminal device.
Apparatus according to any one of claims 16-19, wherein

The sending module is further configured to send first indication information to the first core network device;

The first indication information is used to indicate at least one of: the voice session establishing device supports a voice session function, the terminal device supports a voice session function, the voice session establishing device supports a dual connectivity function, and the terminal The device supports the dual connectivity function and the terminal device can access the secondary node supporting the voice session function.
Apparatus according to any one of claims 16 to 21, wherein

The sending module is further configured to send a third message to the first core network device, where the third message is used to indicate that the voice is between the second access network device and the second core network device The session establishes a user plane connection; or,

The sending module is further configured to send a fourth message to the second access network device; the fourth message is used to indicate Establishing a user plane connection for the voice session between the second access network device and the voice session establishing device.
Apparatus according to any of claims 16-22, wherein

The voice session establishing device supports a first radio access technology, and the second access network device supports a second radio access technology.
The apparatus according to any one of claims 16 to 23, wherein the first message includes quality of service QoS information of the voice session; and/or the second message includes the QoS information or Incoming network resource information, the access network resource information is determined according to the QoS information.
The apparatus according to any one of claims 16 to 24, wherein the access network resource is a data radio bearer DRB.
A voice session establishing device, comprising:

a determining module, configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

a sending module, configured to send the second indication information to the terminal device, where the second indication information is used to indicate that the communication network supports a voice session function;

The function of the first access network device to support the voice session includes: the first access network device supports the function of establishing a voice session through the dual connection, and/or the terminal device supports the voice session function, including: The terminal device supports the function of establishing a voice session through dual connectivity.
The device according to claim 26, wherein the dual connection is a dual connection between the terminal device and the first access network device and the second access network device;

The first access network device is the dual-connected primary node, the second access network device is the dual-connected secondary node, and the second access network device is used for the voice The session establishes access network resources.
The device according to claim 26 or 27, further comprising:

a receiving module, configured to receive first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of: the first access network device supports a voice session function, The terminal device supports a voice session function, the first access network device supports a dual connectivity function, the terminal device supports a dual connectivity function, and the terminal device can access a secondary node supporting a voice session function;

or,

The determining module is specifically configured to determine, according to the pre-configuration information, that the first access network device of the communication network supports a voice session function and/or the terminal device supports a voice session function.
The device according to claim 28, wherein the first indication information is carried in a fifth message sent by the first access network device to the voice session establishing device;

The fifth message is used to implement at least one of: requesting establishment of a connection between the first access network device and the voice session establishing device, indicating capability and indication of the first access network device The capabilities of the terminal device.
Apparatus according to any one of claims 26-29, wherein

The first access network device supports a first radio access technology, and the second access network device supports a second radio access technology.
An access network device, where the access network device is a first access network device, and the first access network device includes:

a receiver, configured to receive a first message sent by the first core network device, where the first message is used to send the first message The network access device requests to establish an access network resource of the voice session of the terminal device;

a transmitter, configured to send a second message to the second access network device, where the second message is used to request the second access network device to establish an access network resource of the voice session;

There is a dual connection between the terminal device and the first access network device and the second access network device.
The access network device according to claim 31, wherein the first access network device is the dual-connected primary node, and the second access network device is the dual-connected secondary node.
The access network device according to claim 31 or 32, further comprising: a processor;

The processor is configured to determine that the currently accessed secondary node is the second access network device, if the secondary node currently accessed by the terminal device supports a voice session function; or

The processor is configured to: if the secondary node currently accessed by the terminal device does not support the voice session function, control the terminal device to disconnect from the currently accessed secondary node; and select a voice session support function. Accessing the network device as the second access network device; or

The processor is configured to select, as the second access network device, an access network device that supports a voice session function, if the terminal device does not currently have a secondary node.
An access network device according to any of claims 31-33, characterized in that

The processor is further configured to determine, according to a condition, whether the access network resource of the voice session is established by the second access network device;

The condition includes at least one of the following: voice preference information of the terminal device, capability information of the terminal device, capability information of the first access network device, and capability information of the second access network device. And a local policy of the first access network device;

Correspondingly, if the processor determines that the access network resource of the voice session is established by the second access network device, the sender sends the second message to the second access network device.
The access network device of claim 34, wherein

The processor is further configured to acquire voice preference information of the terminal device and/or capability information of the terminal device.
An access network device according to any of claims 31-34, characterized in that

The transmitter is further configured to send first indication information to the first core network device;

The first indication information is used to indicate at least one of the following: the first access network device supports a voice session function, the terminal device supports a voice session function, and the first access network device supports a dual connectivity function. The terminal device supports a dual connectivity function and the terminal device can access a secondary node that supports a voice session function.
An access network device according to any of claims 31-35, characterized in that

The transmitter is further configured to send a third message to the first core network device, where the third message is used to indicate that the voice is between the second access network device and the second core network device The session establishes a user plane connection; or,

The transmitter is further configured to send a fourth message to the second access network device, where the fourth message is used to indicate between the second access network device and the first access network device A user plane connection is established for the voice session.
An access network device according to any of claims 31-37, characterized in that

The first access network device supports a first radio access technology, and the second access network device supports a second radio access technology.
The access network device according to any one of claims 31 to 38, wherein the first message includes quality of service QoS information of the voice session; and/or the second message includes the QoS Information or access network Resource information, the access network resource information is determined according to the QoS information.
The access network device according to any one of claims 31 to 39, wherein the access network resource is a data radio bearer DRB.
A core network device, wherein the core network device is a first core network device, including:

a processor, configured to determine that the first access network device of the communication network supports the voice session function and/or the terminal device supports the voice session function;

a transmitter, configured to send, to the terminal device, second indication information, where the second indication information is used to indicate that the communication network supports a voice session function;

The function of the first access network device to support the voice session includes: the first access network device supports the function of establishing a voice session through the dual connection, and/or the terminal device supports the voice session function, including: The terminal device supports the function of establishing a voice session through dual connectivity.
The core network device according to claim 41, wherein the dual connectivity is a dual connectivity between the terminal device and the first access network device and the second access network device;

The first access network device is the dual-connected primary node, the second access network device is the dual-connected secondary node, and the second access network device is used for the voice The session establishes access network resources.
The core network device according to claim 41 or 42, further comprising:

a receiver, configured to receive the first indication information that is sent by the first access network device, where the first indication information is used to indicate at least one of: the first access network device supports a voice session function, The terminal device supports a voice session function, the first access network device supports a dual connectivity function, the terminal device supports a dual connectivity function, and the terminal device can access a secondary node supporting a voice session function;

or,

The processor is specifically configured to determine, according to the pre-configuration information, that the first access network device of the communication network supports a voice session function and/or the terminal device supports a voice session function.
The core network device according to claim 43, wherein the first indication information is carried in a fifth message sent by the first access network device to the first core network device;

The fifth message is used to implement at least one of: requesting to establish a connection between the first access network device and the first core network device, indicating a capability of the first access network device, and Indicates the capabilities of the terminal device.
A core network device according to any of claims 41-44, characterized in that

The first access network device supports a first radio access technology, and the second access network device supports a second radio access technology.
A computer program product, wherein the first access network device performs the method of any one of claims 1-10 when the computer program product is run on a first access network device .
A computer storage medium, comprising instructions, wherein when the instruction is run on a first access network device, causing the first access network device to perform the method of any one of claims 1-10 method.
A computer program product, characterized in that, when the computer program product is run on a first core network device, the first core network device is caused to perform the method of any one of claims 11-15.
A computer storage medium comprising instructions, wherein when the instructions are run on a first core network device, causing the first core network device to perform the method of any of claims 11-15.