WO2020103460A1

WO2020103460A1 - Voice calling method and device, and storage medium

Info

Publication number: WO2020103460A1
Application number: PCT/CN2019/093924
Authority: WO
Inventors: 何金招
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-11-20
Filing date: 2019-06-28
Publication date: 2020-05-28
Also published as: CN111200852A

Abstract

Disclosed in the present application are a voice calling method and device, and a storage medium. The method comprises: interacting with other base stations to obtain voice service support information of the other base stations; sending to a terminal a broadcast message carrying voice service support information of a base station and the voice service support information of the other base stations, so that when initiating a voice call, the terminal accesses, according to the broadcast message, a base station cell that supports voice service and has a voice frequency point located in a voice frequency range of the terminal, and establishes a voice service connection; or when the terminal accesses the base station cell, receiving the voice call initiated by the terminal; if the base station cell does not support voice service, obtaining voice frequency range information of the terminal; and controlling, according to the voice frequency range information of the terminal, the terminal to migrate the voice service to a neighboring cell having the voice frequency point located in the voice frequency range of the terminal, and establishing the voice service connection between the terminal and the neighboring cell.

Description

Voice calling method, equipment and storage medium

Cross-reference of related applications

This application is based on a Chinese patent application with an application number of 201811385592.8 and an application date of November 20, 2018, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference.

Technical field

This application relates to, but not limited to, the field of mobile communication technology, and in particular, to a voice call method, device, and storage medium.

Background technique

With the continuous progress of communication technology, the mobile communication network has developed to the fifth generation mobile communication technology (5th-Generation, 5G). In the 5G period, voice services are still one of the important services. The Evolved Packet System (EPS) fallback scheme allows 5G terminals to reside on 5G New Radio (NR), but does not provide voice services on 5G NR; when a terminal initiates a voice call, the network passes The directional process switches the terminal to Long Term Evolution (LTE), and provides voice services through Long Term Voice Bearer (Voice over Long-Term Evolution, VoLTE).

Although the EPS fallback scheme can enable the terminal to finally obtain voice services, the fallback process of the EPS fallback scheme usually involves signaling interaction between the user equipment (User Equipment, UE), gNB (5G base station) and the core network element. This process Making the voice call time too long, it is easy to cause the UE to be unable to redirect in time, causing the user to drop the call, which ultimately affects the user's voice service experience.

Summary of the invention

In view of this, the embodiments of the present application are expected to provide a voice call method, device, and storage medium to solve the fallback process of the EPS fallback scheme, which makes the voice call time too long and easily causes the problem of dropped calls.

An embodiment of the present application provides a voice call method, which is executed on a base station side, and includes: interacting with other base stations to obtain voice service support information of the other base stations; sending a broadcast message to a terminal, the broadcast message carrying the The voice service support information of the base station and the voice service support information of the other base stations, so that when the terminal initiates a voice call, the voice service is accessed according to the broadcast message, and the voice point is in the voice frequency band of the terminal And establish a voice service connection in the base station cell; or, when the terminal accesses the base station cell, receive a voice call initiated by the terminal; if the base station cell does not support voice service, acquire the voice frequency band information of the terminal; Based on the voice frequency band information of the terminal, controlling the terminal to migrate voice services to a neighboring cell, so that the terminal and the neighboring cell establish a voice service connection; wherein, the voice point of the neighboring cell is located at the terminal In the voice band.

Wherein, according to the terminal's voice frequency band information, controlling the terminal to migrate voice services to neighboring cells includes: according to the terminal's voice frequency band information, determining that the voice service is supported and the voice point is in the terminal's voice frequency band A neighboring cell in the network; sending a redirection indication message to the terminal; wherein the redirection indication message carries the voice and audio point information of the neighboring cell; the redirection indication message redirects the terminal to all Describing neighboring cells.

Wherein, controlling the terminal to migrate voice services to neighboring cells based on the voice frequency band information of the terminal includes: adding a secondary carrier cell or a primary secondary cell PScell according to the voice frequency band information of the terminal; wherein, the added secondary cell The carrier cell or PScell cell supports voice services, and the speech and audio points are among the speech and audio points of the terminal; a reconfiguration message is sent to the terminal; the added secondary carrier cell or PScell is carried in the reconfiguration message Radio resource parameters of the cell; through the reconfiguration message, the terminal establishes a voice service bearer with the added secondary carrier cell or PScell cell.

An embodiment of the present application provides a voice call method, which is executed on the terminal side and includes: receiving a broadcast message sent by a base station, where the broadcast message carries voice service support information of the base station and voice service support information of other base stations; During a voice call, according to the voice service support information of the base station and the voice service support information of the other base stations carried in the broadcast message, the voice service is accessed and the voice point is in the voice frequency band of the terminal And establish a voice service connection; or, initiate a voice call to the accessed base station cell; after receiving the voice band acquisition request sent by the base station cell, send the voice band information of the terminal to the base station cell , So that the base station cell determines the neighboring cell that supports voice services based on the voice frequency band information of the terminal and the voice point is in the voice frequency band of the terminal; under the control of the base station cell, the voice service is migrated Go to the neighboring cell and establish a voice service connection.

Wherein, under the control of the base station cell, migrating voice services to the neighboring cell includes: receiving a redirection indication message sent by the base station cell; wherein, the redirection indication message carries the language of the neighboring cell Audio point information; attached to the neighboring cell according to the speech and audio point information of the neighboring cell.

Wherein, under the control of the base station cell, migrating voice services to the neighboring cell includes: receiving a reconfiguration message sent by the base station cell; wherein, the reconfiguration message carries the wireless of the secondary carrier cell or PScell cell Resource parameters; perform radio resource configuration according to the radio resource parameters of the secondary carrier cell or PScell cell, and establish a voice service bearer with the secondary carrier cell or PScell cell.

An embodiment of the present application provides a voice call device, where the voice call device is provided on a base station side, and the voice call device includes a first processor and a first memory; the first processor is configured to execute the first The voice call program stored in the memory to implement the above-mentioned voice call method executed on the base station side.

An embodiment of the present application provides a voice call device, where the voice call device is provided on a terminal side, and the voice call device includes a second processor and a second memory; the second processor is configured to execute the second The voice call program stored in the memory to implement the above voice call method executed on the terminal side.

The present application provides a storage medium, which is provided on a base station side, the storage medium stores one or more programs, and the one or more programs may be executed by one or more processors to implement the above Voice call method performed on the base station side.

The present application provides a storage medium, which is provided on a terminal side, and the storage medium stores one or more programs, and the one or more programs may be executed by one or more processors to implement the foregoing Voice call method performed on the terminal side.

The beneficial effects of the embodiments of the present application are as follows:

In this application, the terminal can obtain information about whether each base station cell supports voice services according to the broadcast message of the base station, and then, when initiating a voice call, preferentially access the base station cell supporting the voice service to avoid migrating the terminal's voice service to other support The base station cell of the voice service improves the call connection rate, reduces the call connection delay, and improves the user experience effect.

In this application, after a terminal accesses a base station cell that does not support voice services, the terminal's voice service can be migrated to other base station cells that can share the voice service for the terminal according to the voice frequency band supported by the terminal, so that the terminal's voice service is normal Conduct to avoid the delay in the call process caused by the complex signaling interaction process in the EPS fallback scheme, improve the call connection rate, and improve the user experience effect.

BRIEF DESCRIPTION

FIG. 1 is a flowchart of a voice call method on a base station side provided by an embodiment of the present application;

2 is a flowchart of a voice call method on a terminal side provided by an embodiment of the present application;

3 is a flowchart of a voice call method on a base station side provided by an embodiment of the present application;

4 is a flowchart of a voice call method on a terminal side provided by an embodiment of the present application;

5 is a sequence diagram of a voice call method provided by an embodiment of the present application;

6 is a sequence diagram of a voice call method when a CU and a DU are separated according to an embodiment of the present application;

7 is a sequence diagram of a voice call method when a CU and a DU are separated according to an embodiment of the present application;

8 is a sequence diagram of a voice call method provided by an embodiment of the present application;

9 is a sequence diagram of a voice call method provided by an embodiment of the present application;

10 is a structural diagram of a voice call device on a base station side provided by an embodiment of the present application;

FIG. 11 is a structural diagram of a voice call device on a terminal side provided by an embodiment of the present application.

detailed description

The present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and do not limit the present application.

This embodiment provides a voice call method performed on the base station side. FIG. 1 is a flowchart of a voice call method on a base station side according to an embodiment of the present application.

Step S101: Obtain voice service support information of other base stations by interacting with other base stations.

In some embodiments, the types of base stations include, but are not limited to: gNB base stations, eNB base stations (4G base stations), 3G base stations, and 2G base stations. Preferably, the base station is a gNB base station, and the eNB base station is selected next.

In some embodiments, the voice service support information includes: whether each base station cell corresponding to the base station supports voice service, and a speech and audio point corresponding to the base station cell that supports voice service.

In practical applications, you can perform signaling interaction with other base stations through the X2 interface or Xn interface to obtain voice service support information of other base stations.

Both the X2 interface and the Xn interface are interfaces for signaling interaction between the base station and the base station, for example, an interface between gNB and eNB.

The types of signaling include: X2 SETUP REQUEST (X2 setup request), XN SETUP REQUEST (Xn setup request), X2 SETUP RESPONSE (X2 setup response), XN SETUP RESPONSE (Xn setup response), NG-RAN NODE CONFIGURATION UPDATE ( Xn configuration update), NG-RAN NODE CONFIGURATION UPDATE ACKNOWLEDGE (Xn configuration update confirmation).

Step S102: Send a broadcast message to the terminal, where the broadcast message carries the voice service support information of the base station and the voice service support information of other base stations, so that when the terminal initiates a voice call, the terminal supports access to the voice service according to the broadcast message. The audio point is in the base station cell in the voice frequency band of the terminal and establishes a voice service connection.

In some embodiments, the types of broadcast messages include: System Information Block 1 (System Information Blocks 1, SIB1) messages, Master Information Block (Master Information Block, MIB) messages, and other messages that can carry voice service support information.

In some embodiments, a broadcast message can be sent to the terminal over the air interface.

In some embodiments, the base station may broadcast the information of whether each base station cell supports voice services to the terminal in advance, so that the terminal knows in advance whether the information of each base station cell supports voice services, so that when the terminal initiates a voice call, it can receive priority Enter the base station cell that supports voice services, to avoid the need to migrate the voice service of the terminal to other base station cells that support voice services after the terminal accesses the base station cell that does not support voice services. This embodiment can effectively improve the call connection rate , Reduce call connection delay and improve user experience.

This embodiment correspondingly provides a voice call method executed on the terminal side. 2 is a flowchart of a voice call method on a terminal side according to an embodiment of the present application.

Step S201: Receive a broadcast message sent by a base station, where the broadcast message carries voice service support information of the base station and voice service support information of other base stations.

In practical applications, after receiving the broadcast message sent by the base station, the terminal can parse the broadcast message to obtain voice service support information of the base station and voice service support information of other base stations carried in the broadcast message.

Step S202, when initiating a voice call, according to the voice service support information of the base station and the voice service support information of other base stations carried in the broadcast message, access to support the voice service, and the voice point is in the voice frequency band of the terminal Base station cell and establish voice service connection.

In practical applications, when a terminal initiates a voice call in Idle (idle state), it determines that the voice service is supported and the voice and audio points are based on the voice service support information of the base station and the voice service support information of other base stations carried in the broadcast message. The base station cell of the voice frequency band of the terminal accesses the base station cell and establishes a voice service connection with the base station cell.

The types of base station cells include: gNB cells, eNB cells, 3G cells, and 2G cells.

In some embodiments, according to the broadcast message, the terminal can obtain whether each base station cell corresponding to each base station supports voice services, and the voice and audio points corresponding to the base station cell that supports voice services; read the voice frequency band supported by the terminal; In each base station cell, it is determined that the base station cell whose voice point is in the voice frequency band supported by the terminal; the terminal accesses a base station cell that supports voice service and the voice point is in the voice frequency band of the terminal to establish voice service.

If multiple base station cells support voice services and the speech and audio points are in the voice frequency band supported by the terminal, the terminal may select the base station cell corresponding to the highest priority speech and audio point to access according to the priority of the speech and audio points. If the voice and audio points of multiple base station cells have the same priority and all have the highest priority, choose the reference signal received power (Reference Signal Receiving Power, RSRP) signal strength is the highest or the LTE reference signal received quality (Reference Signal Receiving Quality) , RSRQ) base station cell access with the best signal quality.

In some embodiments, the base station cell sends a broadcast message and carries the voice service support information of the base station cell in the broadcast message; when the terminal in the idle state initiates a voice call, the base station cell supporting the voice service is selected for access to avoid access Entering a base station cell that does not support voice services can effectively reduce the high delay caused by the interaction of air interface signaling messages, improve the voice call connection rate, avoid dropped calls, and improve the user experience.

This embodiment provides another voice call method performed on the base station side. As shown in FIG. 3, it is a flowchart of a voice call method on a base station side according to an embodiment of the present application.

Step S301: When the terminal accesses the base station cell, it receives a voice call initiated by the terminal.

In some embodiments, voice calls are used to establish voice service connections.

The terminal in the idle state or the connected state can send a radio call to the base station cell with a radio resource control establishment request (Radio Resource Control Control Setup Request, RRC Setup Request) message, that is, an RRC setup request message, to initiate a voice call to the base station cell .

When a terminal initiates a voice call, it selects a base station cell to access. In some embodiments, the base station cell that the terminal selects to access is a cell that does not support voice services.

Step S302, if the cell of the base station does not support voice services, acquire voice band information of the terminal.

In some embodiments, the voice frequency band information includes: voice frequency bands supported by the terminal.

When the base station cell judges that the base station cell does not support voice services, in order to enable the terminal to normally perform voice services, it is necessary to select a neighboring cell that can undertake voice services for the terminal for the terminal.

In some embodiments, the base station cell needs to find a neighboring cell that can undertake voice services for the terminal based on the terminal's voice frequency band information. The neighboring cell may be a neighboring cell within the station or a neighboring cell between stations.

In some embodiments, the base station cell may send a voice band acquisition request to the terminal, and the voice band acquisition request is used to request the terminal to send the terminal's voice band information to the base station cell, and then obtain the voice band acquisition request by sending the terminal Information about the voice frequency band of the terminal.

Step S303: Based on the voice frequency band information of the terminal, the terminal is controlled to migrate voice services to a neighboring cell, so that the terminal and the neighboring cell establish a voice service connection; wherein, the voice point of the neighboring cell is in the voice frequency band of the terminal in.

In some embodiments, the neighbor cell may be a redirected neighbor cell, a secondary carrier cell, or a primary secondary cell (Primary SCell, PScell) cell.

In some embodiments, three migration methods are schematically given:

Method 1: Determine a neighboring cell that supports voice services and whose speech and audio points are in the terminal's voice frequency band according to the voice frequency band information of the terminal; send a redirection indication message to the terminal; where the redirection indication message carries the neighboring cell Voice and audio point information; through the redirection instruction message, the terminal is redirected to the neighboring cell.

Method 2: Add a secondary carrier cell based on the terminal's voice frequency band information; where the added secondary carrier cell supports voice services, and the speech and audio points are in the terminal's speech and audio points; send a reconfiguration message to the terminal; The reconfiguration message carries the radio resource parameters of the added secondary carrier cell; the reconfiguration message enables the terminal to establish a voice service bearer with the added secondary carrier cell.

Method 3: Add a PScell cell based on the terminal's voice frequency band information; where the added PScell cell supports voice services, and the speech and audio points are in the terminal's speech and audio points; send a reconfiguration message to the terminal; and send the reconfiguration message to the terminal Carries the radio resource parameters of the added PScell cell; through the reconfiguration message, the terminal establishes a voice service bearer with the added PScell cell.

In some embodiments, the base station includes: a centralized unit (Centralized Unit, CU) and a distributed unit (Distributed Unit, DU). CU and DU can be integrated together or set independently. The base station cell includes: CU cell and DU cell. The voice call method of this embodiment may be implemented through the interaction between the CU cell, the DU cell, and the terminal.

In some embodiments, after the terminal accesses a base station cell that does not support voice services, the terminal's voice service can be migrated to other base station cells that can share the voice service for the terminal according to the voice frequency band supported by the terminal, so that the terminal's voice service Normally, because this embodiment does not require complex signaling interaction with the core network element, it can avoid the delay caused by the complex signaling interaction process in the EPS fallback scheme for the call process, improve the call connection rate, and improve User experience effects.

This embodiment provides a voice call method performed on the terminal side. 4 is a flowchart of a voice call method on a terminal side according to an embodiment of the present application.

Step S401: Initiate a voice call to the accessed base station cell.

In some embodiments, the base station cell that the terminal chooses to access does not support voice services.

In some embodiments, in the idle state or the connected state, the terminal may initiate a voice call to the base station cell selected for access.

Step S402, after receiving the voice frequency band acquisition request sent by the base station cell, send the terminal's voice frequency band information to the base station cell, so that the base station cell determines that the voice service is supported according to the terminal's voice frequency band information, and the voice and audio points are at The neighboring cell in the voice frequency band of the terminal.

Step S403: Under the control of the base station cell, migrate voice services to the neighboring cell and establish a voice service connection.

In some embodiments, three migration methods are schematically given:

Manner 1: receiving a redirection indication message sent by the base station cell; wherein the redirection indication message carries the speech and audio point information of the neighboring cell; and is attached to the neighboring cell according to the speech and audio point information of the neighboring cell.

Method 2: Receive the reconfiguration message sent by the base station cell; where the reconfiguration message carries the radio resource parameters of the secondary carrier cell; perform radio resource configuration according to the radio resource parameters of the secondary carrier cell, and establish a voice service with the secondary carrier cell Bearer.

Method 3: Receive a reconfiguration message sent by the base station cell; wherein the reconfiguration message carries the radio resource parameter of the PScell cell; perform radio resource configuration according to the radio resource parameter of the PScell cell and establish a voice service bearer with the PScell cell.

In some embodiments, after the terminal accesses a base station cell that does not support voice services, the terminal can provide the base station cell with the voice frequency band it supports, and under the control of the base station cell, migrate the voice service to another capable of sharing the voice service for the terminal The base station cell of the terminal enables the voice service of the terminal to proceed normally. Since this embodiment does not need to perform complex signaling interaction with the core network element, it can avoid the delay caused by the complex signaling interaction process in the EPS fallback scheme for the call process. At the same time, improve the call connection rate and enhance the user experience.

The following provides a voice call method. In some embodiments, the base station cell that the terminal chooses to access does not support voice services. As shown in FIG. 5, it is a sequence diagram of the voice call method of the embodiment of the present application.

Step S501, the terminal sends an RRC establishment request message to the base station cell.

The terminal sends a voice call to the base station cell by sending an RRC setup request message carrying the voice call indication to the base station cell.

Step S502, the base station cell sends an RRC setup message to the terminal.

The base station cell sends an RRC Setup (Radio Resource Control, Setup, RRC Setup) message to the terminal to establish an SRB1 (Signalling Radio Bearer 1, signaling bearer 1) signaling bearer.

Step S503, the terminal sends an RRC establishment complete message to the base station cell.

The terminal sends an RRC establishment complete (Radio Resource Control Setup, Complete, RRC Setup Complete) message to the base station cell.

Step S504, the base station cell sends a UE capability query message.

The base station cell sends a UE Capability Inquiry (UE Capability) message to the terminal on the SRB1 signaling bearer, requesting the terminal to report UE capability information.

User equipment (User Equipment, UE) is a terminal.

UE capability information, including: terminal voice band information.

The UECapablityEnquiry message can be regarded as the above-mentioned voice band acquisition request.

In practical applications, the base station cell determines that the voice call of the terminal needs to be redirected based on the voice call indication carried in the RRC Setup Request message and that the base station cell does not support voice services; During the redirection, the base station cell does not need to send an Initial UE Message (Initial UE Message) message to the authentication management function (AMF) of the core network to perform the UE initial context interaction process.

The purpose of the base station cell sending the UECapablityEnquiry message to the terminal is to obtain UE capability information for the base station cell redirection decision. Through the UE capability query process, it is possible to obtain which voice frequency bands the terminal supports.

Step S505, the terminal sends UE capability information to the base station cell.

The terminal sends a UE Capablity Information (UE capability information) message carrying UE capability information to the base station cell on the SRB1 signaling bearer.

Step S506, the base station cell sends a redirect instruction message to the terminal.

The base station cell sends a redirect instruction message carrying the speech and audio points of the neighboring cell to the terminal.

The redirection indication message is used to instruct the terminal to attach to the specified frequency point. In some embodiments, the redirection indication message is used to indicate that the terminal is attached to the speech point of the neighboring cell.

In some embodiments, the redirect indication sent by the base station cell is an RRC Release (Radio Resource Control Release, RRC Release) message.

The base station cell may query the neighboring cell according to the UE capability information of the terminal, and send a redirection indication message carrying the speech and audio points of the neighboring cell to the terminal. The neighboring cell supports voice services, and the speech and audio points are in the voice frequency band supported by the terminal. The neighbor cell may be a neighbor cell within a station or a neighbor cell between stations.

The base station cell can determine the voice and audio point configuration according to the operator's entire network plan. The voice frequency band configuration can determine which frequency points support voice services and which frequency points do not support voice services among the frequency points supported by the neighboring cell. For example, band 1 does not support voice services, and band 2 supports voice services.

Step S507, the terminal attaches to the speech and audio point of the neighboring cell according to the redirection instruction message, and establishes a voice service connection.

In some embodiments, in the case where the CU and the DU are set independently, the following provides a voice call method. As shown in FIG. 6, it is a sequence diagram of the voice call method when the CU and DU are separated in the embodiment of the present application.

Step S601, the terminal sends an RRC establishment request message to the DU cell.

The RRC establishment request message carries a voice call indication.

In some embodiments, base station cells include: CU cells and DU cells.

Step S602, the DU cell sends an initial uplink RRC (INITIAL UL RRC MESSAGE) message to the CU cell.

The interface between DU and CU is F1 interface. The DU cell sends the INITIAL UL RRC MESSAGE message to the CU cell through the F1 interface.

The INITIAL UL RRC MESSAGE message carries the RRC Setup Request message, and the CU cell parses the INITIAL UL RRC MESSAGE message to obtain the voice call instruction carried in the RRC Setup Request message.

Step S603, the CU cell sends a downlink RRC message (DL RRC MESSAGE TRANSFER) message to the DU cell.

The CU cell carries the SIB1 signaling bearer admission, and carries the RRC Setup message in the DL RRC MESSAGE TRANSFER, and the RRC Setup message carries the SIB1 admission parameters.

Step S604, the DU cell sends an RRC Setup message to the terminal to establish the SRB1 signaling bearer.

Step S605: The terminal sends an RRC establishment complete message to the DU cell.

Step S606, the DU cell sends an uplink RRC MESSAGE (TRANSFER) message to the CU cell.

The UL RRC MESSAGE TRANSFER message carries the RRC Setup message.

In step S607, the CU cell determines that the CU cell does not support voice services and needs to redirect the terminal.

In practical applications, after determining that the terminal needs to be redirected, the CU cell needs to obtain the voice frequency band information supported by the terminal through the capability query process, and determine which neighboring cells that meet the requirements are redirected to the terminal.

Step S608: The CU cell sends a downlink RRC message transmission message to the DU cell.

The downlink RRC message transmission message carries the UECapablityEnquiry message, requesting the terminal to report UE capability information.

Step S609, the DU cell sends a UE capability query message to the terminal on the SRB1 signaling bearer.

Step S610: The terminal sends a message carrying UE capability information to the DU cell on the SRB1 signaling bearer.

The terminal reports the UE capability information to the DU cell through the UECapablityInfomation message.

In step S611, the DU cell sends an uplink RRC message transmission message to the CU cell.

The uplink RRC message transmission message carries the UE Capablity Infomation message, and the CU cell parses the UL RRC MESSAGE TRANSFER message to obtain the UE capability information carried in the UE Capablity Infomation message, and then obtains the voice frequency band information supported by the terminal to redirect the terminal.

In step S612, the CU cell sends a downlink RRC message transmission message to the DU cell.

In step S613, the DU cell sends a redirect instruction message carrying the speech and audio points of the neighboring cell to the terminal.

In some embodiments, the redirect indication message sent by the DU cell is an RRC Release message.

In some embodiments, the neighboring cell supports voice services, and the voice and audio points are in the voice frequency band supported by the terminal.

Step S614, the terminal attaches to the speech and audio points of the neighboring cell according to the redirection instruction message, and establishes a voice service.

In some embodiments, when the terminal in the idle state initiates a voice call, the base station cell successfully establishes the SRB1 signaling bearer with the terminal, and directly initiates the capability query process. The base station cell does not need to interact with the core network interface signaling to directly instruct the terminal Redirect to the voice and audio points of neighboring cells, effectively reduce the delay caused by the interaction of NG (interface between gNB base station and AMF) interface signaling messages, improve the rate of voice call connection, and improve the user experience.

In the case where the CU and DU are independently set, another voice call method is provided below. As shown in FIG. 7, it is a sequence diagram of the voice call method when the CU and DU are separated in the embodiment of the present application.

Step S701, the terminal sends an RRC establishment request message to the DU cell.

The RRC Setup Request message carries voice call instructions.

Step S702, the DU cell sends an initial uplink RRC message to the CU cell.

Step S703, the CU cell sends a downlink RRC message transmission message to the DU cell.

Step S704, the DU cell sends an RRC setup message to the terminal to establish the SRB1 signaling bearer.

Step S705, the terminal sends an RRC establishment complete message to the DU cell.

In step S706, the DU cell sends an uplink RRC message transmission message to the CU cell.

In step S707, the CU cell determines that the CU cell does not support voice services and needs to redirect the terminal.

Step S708, the CU cell sends a downlink RRC message transmission message to the DU cell.

In step S709, the DU cell sends a UE capability query message to the terminal on the SRB1 signaling bearer.

Step S710, the terminal sends UE capability information to the DU cell on the SRB1 signaling bearer.

In step S711, the DU cell sends an uplink RRC message transmission message to the CU cell.

The UL RRC MESSAGE TRANSFER message carries the UE Capablity Infomation message, and the CU cell parses the UL RRC MESSAGE TRANSFER message to obtain the UE capability information carried in the UE Capablity Infomation message, and then obtains the voice band information supported by the terminal, and selects through the measurement reconfiguration process. The speech signal of the neighboring cell is measured.

Step S712, the CU cell sends a downlink RRC message transmission message to the DU cell.

The DL RRC MESSAGE TRANSFER message carries RRC reconfiguration (Radio Resource Control Reconfiguration, RRC Reconfiguration) message.

The RRC Reconfiguration message carries the measurement language audio point configuration and the threshold for reporting measurement events. The RRC Reconfiguration message is used to instruct the terminal to measure the speech audio point signal of the neighboring cell.

The configuration of measured speech and audio points includes: speech and audio points of neighboring cells to be measured.

The threshold for reporting measurement events refers to: the threshold for reporting measurement results.

Step S713, the DU cell sends a reconfiguration message to the terminal.

In some embodiments, the reconfiguration message refers to the RRC Reconfiguration message.

Step S714: The terminal sends an RRC Setup Complete (RRC Setup) message to the DU cell.

After receiving the reconfiguration message, the terminal measures the speech and audio points of the neighboring cell according to the measurement speech and audio point configuration indicated by the DU cell. If the terminal detects that the frequency signal of the neighboring cell is greater than the threshold for reporting measurement events, it needs to report the measurement report to the DU cell subsequently.

Step S715, the DU cell sends an uplink RRC message transmission message to the CU cell.

The UL RRC MESSAGE TRANSFER message carries the RRC Setup message. The RRCSetupComplete message indicates that the reconfiguration process is successful.

Step S716, the terminal sends a measurement report message to the DU cell.

After the terminal measures the speech and audio points of the neighboring cell according to the measurement speech and audio point configuration indicated by the DU cell, if the measured frequency signal of the neighboring cell is greater than the threshold for reporting measurement events, the terminal reports a measurement report to the DU cell.

The measurement report message is a measurement report (Measurement Report) signaling message. The measurement signal strength of the speech and audio points of the neighboring cell carried in the Measurement Report message.

In step S717, the DU cell sends an uplink RRC message transmission message to the CU cell.

After receiving the measurement report message reported by the terminal, the DU cell transparently transmits it to the CU cell through the UL RRC MESSAGE TRANSFER message.

The UL, RRC, MESSAGE, and TRANSFER messages carry Measurement and Report signaling messages. The CU cell parses the UL, RRC, and MESSAGE, and TRANSFER messages to obtain the measured signal strength of the speech and audio points of the neighboring cell carried by the Measurement and Report signaling messages.

In step S718, the CU cell sends a downlink RRC message transmission message to the DU cell.

The CU cell can determine whether the terminal can be redirected to the speech and audio point of the neighboring cell according to the measured signal strength of the speech and audio point of the neighboring cell. The judgment result is transparently transmitted to the DU cell through the DL RRC MESSAGE TRANSFER message.

Wherein, when the measured signal strength of the speech and audio point of the neighboring cell is greater than the preset redirection threshold, the terminal may be redirected to the speech and audio point of the neighboring cell.

Step S719, the DU cell sends a redirection instruction message carrying the speech and audio points of the neighboring cell to the terminal.

Step S720, the terminal attaches to the speech and audio point of the neighboring cell according to the redirection instruction message, and establishes a voice service connection.

In some embodiments, the voice call method is described in a scenario where DU and CU are independently set. 8 is a sequence diagram of a voice call method according to an embodiment of the present application.

In step S801, the terminal sends an RRC establishment request message to DU cell 1.

The RRC Setup Request message carries voice call instructions.

In some embodiments, when the terminal initiates a voice call, it selects a cell and selects the DU cell Cell1 that does not support voice services for access.

The base station DU cell Cell1 transparently transmits the RRC Setup Request message to the CU cell Cell1 through the INITIAL UL RRC MESSAGE message.

Step S802, DU cell 1 sends an initial uplink RRC message to CU cell 1.

The interface between DU and CU is F1 interface. The DU cell Cell1 sends the INITIAL UL RRC MESSAGE message to the CU cell Cell1 through the F1 interface.

The INITIAL UL RRC MESSAGE message carries the RRC Setup Request message, and the CU cell Cell1 parses the INITIAL UL RRC MESSAGE message to obtain the voice call instruction carried in the RRC Setup Request message.

In step S803, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

The CU cell Cell1 carries the SIB1 signaling bearer admission, and carries the RRC Setup message in the DL RRC MESSAGE TRANSFER, and the RRC Setup message carries the SRB1 admission parameters.

Step S804, the DU cell 1 sends an RRC setup message to the terminal, requesting to establish the SRB1 signaling bearer.

Step S805, the terminal sends an RRC establishment complete message to DU cell 1.

After completing the SRB1 signaling bearer configuration, the terminal returns an RRC Setup message to the DU cell Cell1. The DU cell Cell1 transparently transmits the RRC Setup message to the CU cell Cell1 through the UL RRC MESSAGE TRANSFER message.

In step S806, the DU cell 1 sends an uplink RRC message transmission message to the CU cell 1.

In step S807, the CU cell 1 decides that the CU cell Cell1 does not support the voice service, and the CU cell 1 pre-decides the carrier aggregation (Carrier Aggregation, CA).

The CU cell Cell1 pre-decision CA refers to judging whether the frequency of the neighboring cell supports voice services and whether it is covered with the CU cell Cell1. If it is determined that the frequency of the neighboring cell supports voice services and covers the same as the CU cell Cell1, it is determined that the neighboring cell can perform CA with the CU cell Cell1.

Whether the neighbor cell supports voice services can be configured through the network management operator's network-wide plan to determine which frequency points support voice services and which frequency points do not support voice services, and then can determine whether the neighbor cell supports voice services based on the frequency points supported by the neighbor cell Frequency.

The carrier frequency band combination of the terminal needs to be obtained through the capability query process to determine and select which neighboring cells can be used as the secondary carrier cell of the UE, so this step only performs CA pre-judgment.

In step S808, the CU cell 1 sends a downlink RRC message transmission message to the DU cell 1.

The DL RRC MESSAGE TRANSFER message carries the UE Capacity message and requests the terminal to report UE capability information.

In step S809, the DU cell 1 sends a UE capability query message to the terminal on the SRB1 signaling bearer, requesting the terminal to report UE capability information.

In step S810, the terminal sends UE capability information (UECapablityInfomation) to the DU cell 1 on the SRB1 signaling bearer.

The UECapablityInfomation message carries UE capability information.

UE capability information, including but not limited to: voice frequency band information supported by the terminal. Voice frequency band information supported by the terminal, including but not limited to: carrier frequency band combination information supported by the terminal.

In step S811, the DU cell 1 sends an uplink RRC message transmission message to the CU cell 1.

The UL RRC MESSAGE TRANSFER message carries the UE Capablity Infomation message, and the CU cell Cell1 parses the UE Capablity Infomation message to obtain UE capability information.

This embodiment mainly obtains carrier frequency band combination information supported by the terminal, so that the candidate secondary carrier cell can be selected later. The number of candidate secondary carrier cells may be one or more. In order to make this embodiment easier to understand, this embodiment uses the 2CC (that is, one secondary carrier) scenario as an example.

In step S812, the CU cell 1 determines the CA indication, indicating that the CU cell 1 and the neighboring cell 2 can perform carrier aggregation CA, and the neighboring cell 2 can serve as a secondary carrier cell.

The CA indication decided by the CU cell Cell1 is used to indicate that the neighboring cell can be used as a secondary carrier cell of the terminal to share the voice service bearer of the CU cell Cell1. In some embodiments, the neighboring cell Cell2 is indicated as the secondary carrier cell of the terminal.

Based on the UE capability information, whether the neighboring cell supports carrier aggregation, and whether the frequency of the neighboring cell supports voice services, the CU cell Cell1 can select a neighboring cell that supports carrier aggregation, supports voice services, and has a voice point in the terminal's voice frequency band, as Candidate secondary carrier cells and form a list of candidate secondary carrier cells. The candidate secondary carrier cell list includes information of one or more candidate secondary carrier cells.

If there is only one candidate secondary carrier cell information in the candidate secondary carrier cell list, the candidate secondary carrier cell may be used as the secondary carrier cell; if the candidate secondary carrier cell list contains information of multiple candidate secondary carrier cells, then according to each For the information of the candidate secondary carrier cells, select one of the candidate secondary carrier cells as the final selected secondary carrier cell. In some embodiments, if the number of candidate secondary carrier cells is multiple, it is determined that the frequency point supports the voice service, the frequency point is in the voice frequency band of the terminal, and the candidate secondary carrier cell that covers the same as the CU cell Cell1 as the terminal The secondary carrier cell. If the frequency point supports voice services, the frequency point is in the terminal's voice frequency band, and there are multiple candidate secondary carrier cells with the same coverage as the CU cell Cell1, you can refer to other conditions to determine the secondary carrier cell, for example: select the strongest signal Candidate secondary carrier cell as the final secondary carrier cell.

In this embodiment, the 2CC is used as an example, that is, the neighboring cell Cell2 is selected as the secondary carrier cell to carry the voice service of the terminal.

In step S813, the CU cell 1 sends a UE initial message (INITIAL UE MESSAGE) to the AMF, requesting registration with the core network.

In step S814, the AMF sends a UE context establishment request message to CU cell 1.

The UE context establishment request (INITIAL, CONTEXT, SETUP, REQUEST) message carries the information that the core network requests to establish the voice service bearer.

Step S815: CU cell 1 sends a UE context establishment request message to DU cell 1.

The information of the secondary carrier cell is carried in the UE CONTEXT SETUP REQUEST message.

In step S816, the DU cell 1 sends a request for adding a secondary carrier cell to the neighboring cell 2.

The DU cell Cell1 sends a request to add a secondary carrier cell to the secondary carrier cell based on the information of the secondary carrier cell (neighbor cell Cell2).

In step S817, the neighboring cell 2 replies to the DU cell 1 with a response to add a secondary carrier cell.

After receiving the request to add a secondary carrier cell, the neighboring cell Cell2 performs radio resource parameter admission, and carries the radio resource parameter admission result in the add secondary carrier cell response, so as to be sent to the DU cell Cell1.

In step S818, DU cell 1 sends a UE context establishment response (CONTEXT SETUP RESPONSE) message to CU cell 1.

After completing the radio resource configuration according to the radio resource parameters of the secondary carrier cell, the DU cell Cell1 replies to the CU cell Cell1 with a UE CONTEXT SETUP RESPONSE message, which carries the radio resource parameter information of the secondary carrier cell.

Step S819, the DU cell 1 and the terminal complete the security configuration process.

This security configuration process is mainly used to configure the air interface to use encryption algorithms.

In step S820, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

After the DU cell Cell1 and the terminal complete the security configuration process, the CU cell Cell1 carries the RRC Reconfiguration message through the DL RRC MESSAGE TRANSFER message.

The RRC Reconfiguration message is used to notify the terminal to configure the radio resource parameters of the secondary carrier cell and establish a voice service bearer with the secondary carrier cell.

In step S821, the DU cell 1 sends an RRC reconfiguration message to the terminal.

The terminal receives the RRC Reconfiguration message, configures the radio resource parameters of the secondary carrier cell, and establishes a voice service bearer with the secondary carrier cell.

In step S822, the terminal returns an RRC establishment complete message to DU cell 1.

The DU cell Cell1 receives the RRC Setup message and transparently transmits the RRC Reconfiguration message to the CU cell Cell1 through the UL RRC MESSAGE TRANSFER message.

Step S823, DU cell 1 sends an uplink RRC message transfer message to CU cell 1.

The DU cell Cell1 successfully adds the neighboring cell Cell2 as a secondary carrier cell and establishes a voice service, and shares the voice service data of the primary carrier cell Cell1 (DU cell Cell1) through the neighboring cell Cell2.

In step S824, the DU cell 1 replies to the AMF with an initial UE context establishment response (INITIAL UE CONTEXT SETUP RESPONSE) message.

The INITIAL, CONTEXT, SETUP, and RESPONSE messages carry information about the successful acceptance of voice services. Through the INITIAL, CONTEXT, SETUP, and RESPONSE messages, the AMF can be notified that the voice service has been established and voice communication can be performed normally.

In this embodiment, the terminal does not need to be redirected or switched, and the terminal is migrated to the voice and audio point cell. The voice service bearer data is divided into subcarriers of carrier aggregation. This embodiment can effectively reduce the redirection or switching signaling message interaction band Come to delay and improve user experience.

In some embodiments, the voice call method is described in a scenario where DU and CU are independently set. 9 is a sequence diagram of a voice call method according to an embodiment of the present application.

Step S901: The terminal sends an RRC establishment request message to DU cell 1.

The RRC establishment request message carries a voice call indication.

Step S902, DU cell 1 sends an initial uplink RRC message to CU cell 1.

The interface between DU and CU is F1 interface. The DU cell Cell1 sends the initial uplink RRC (INITIAL UL RRC MESSAGE) message to the CU cell Cell1 through the F1 interface.

Step S903, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

The CU cell Cell1 carries the SIB1 signaling bearer admission, and carries the RRC Setup message in the downlink RRC message transmission (DL RRC MESSAGE TRANSFER), and the RRC Setup message carries the SRB1 admission parameters.

Step S904, the DU cell 1 sends an RRC setup message to the terminal, requesting to establish the SRB1 signaling bearer.

Step S905, the terminal sends an RRC establishment complete message to DU cell 1.

In step S906, DU cell 1 sends an uplink RRC message transmission message to CU cell 1.

In step S907, the CU cell 1 determines that the CU cell 1 does not support the voice service, and the CU cell 1 pre-determines the dual connection.

The pre-decision dual connection of the CU cell Cell1 refers to: judging whether the neighboring cell connected to the CU cell Cell1 through the X2 or Xn interface supports the voice service and whether it is covered with the CU cell Cell1. If it is determined that there is a neighboring cell of the X2 or Xn interface in the cell 1 of the CU cell, the frequency of the neighboring cell supports voice services, and the same coverage as the cell 1 of the CU cell, then the neighboring cell can be dual-connected.

It is necessary to obtain the terminal's dual-connection frequency band combination through the capability query process to determine and select which neighboring cells can be used as the terminal's PScell cell, so this step only performs dual-connection pre-judgment.

In step S908, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

The downlink RRC message transfer (DL RRC MESSAGE TRANSFER) message carries the UE Capablity Enquiry message, requesting the terminal to report UE capability information.

In step S909, the DU cell 1 sends a UE capability query message to the terminal on the SRB1 signaling bearer, requesting the terminal to report UE capability information.

Step S910, the terminal sends UE capability information to DU cell 1 on the SRB1 signaling bearer.

The UECapablityInfomation message carries UE capability information.

UE capability information, including but not limited to: voice frequency band information supported by the terminal. The voice frequency band information supported by the terminal includes, but is not limited to: the dual connection frequency band combination information supported by the terminal.

In step S911, DU cell 1 sends an uplink RRC message transmission message to CU cell 1.

The UL RRC MESSAGE (TRANSFER) message carries the UE Capablity Infomation message, and the CU cell Cell1 parses the UE Capablity Infomation message to obtain UE capability information.

This embodiment mainly obtains the dual connection frequency band combination information supported by the terminal, so as to select a candidate secondary node (Secondary Node, SN). In some embodiments, SN is taken as an eNB or gNB as an example.

In step S912, the CU cell 1 determines a dual connection indication, indicating to which neighbor cells the CU cell 1 can perform dual connection, and the determined neighbor cell is a candidate secondary cell of the terminal.

The dual connection indication decided by the CU cell Cell1 is used to indicate which neighboring cells can be used as the secondary cell (PSCell cell) of the terminal to share the voice service bearer of the CU cell Cell1.

The CU cell Cell1 determines the frequency band of the CU cell Cell1 supported by the terminal and the frequency band of the neighboring cell according to the combination of the dual-connected frequency bands supported by the terminal, and the terminal can make a dual connection indication in the signal overlapping area of the CU cell Cell1 and the neighboring cell.

In practical applications, a candidate SN that supports voice services can be selected, and the neighboring SN can share voice service data. The CU cell Cell1 selects candidate SNs and forms a list of candidate SNs based on the UE capability information, the dual-connected frequency band combination supported by the neighboring cell, and whether the frequency of the neighboring cell supports voice services. The candidate SN list includes information of one or more candidate SNs, and each candidate SN includes one or more candidate PScell cells. The candidate PScell cell supports voice services, and the speech and audio points are in the pinyin segment of the terminal. The dual connection frequency band of the candidate PScell cell can be supported by the terminal, and the terminal is within the signal overlap area of the CU cell Cell1 and the candidate PScell cell.

The candidate SN may be gNB or eNB. This embodiment uses gNB as an example for description.

In step S913, the CU cell 1 sends an initial UE message to the AMF, requesting registration with the core network.

In step S914, the AMF sends an initial UE context establishment request message to CU cell 1.

The initial UE context establishment request (INITIAL UE CONTEXT SETUP REQUEST) message carries the information that the core network requests to establish the voice service bearer.

Step S915: CU cell 1 sends a UE context establishment request message to DU cell 1.

After completing the signaling bearer 2 (Signalling Radio Bearer 2, SRB2) signaling bearer and the data bearer (Data Resource Resource Bearer, DRB) service bearer acceptance, the DU cell Cell1 carries the acceptance result through the UE CONTEXT SETUP RESPONSE message To Cell1 of DU cell.

In step S916, DU cell 1 sends a UE context establishment request message to CU cell 1.

In step S917, the DU cell 1 and the terminal complete the security configuration process.

The security configuration process mainly configures the air interface to use encryption algorithms.

In step S918, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

After the DU cell Cell1 and the terminal complete the security configuration process, the CU cell Cell1 carries the RRC Reconfiguration message through the DL RRC MESSAGE TRANSFER message. Among them, the RRC Reconfiguration message carries SRB2 signaling bearer and DRB service bearer.

In step S919, the DU cell 1 sends an RRC reconfiguration message to the terminal.

After completing the configuration of the SRB2 signaling bearer and the DRB service bearer according to RRC Reconfiguration, the terminal replies to the DU cell Cell1 with an RRC Setup message.

Step S920, the terminal returns an RRC establishment complete message to DU cell 1.

In step S921, the DU cell 1 sends an uplink RRC message transmission message to the CU cell 1.

After receiving the UL RRC MESSAGE TRANSFER message, the CU cell Cell1 indicates that the base station and the terminal successfully established the SRB2 signaling bearer and DRB service bearer.

In step S922, the CU cell 1 sends an initial UE context establishment response message to the AMF.

The initial UE context establishment response (INITIAL, CONTEXT, SETUP, RESPONSE) message carries the information that the voice service is successfully accepted. Through the INITIAL, CONTEXT, SETUP, and RESPONSE messages, the AMF can be notified that the voice service has been established and voice communication can be performed normally.

In step S923, the CU cell 1 sends a secondary node gNB base station addition request (SgNB Addition Request) message to the neighboring base station, requesting to add the SN request.

The list of candidate SNs is carried in the SgNBAdditionRequest message. The candidate SN list includes the candidate SN selected in step S912.

The neighboring base station receives the SgNB Addition Request message, selects the PScell according to the candidate SN list, and responds to the SgNB Addition Request Acknowledge (auxiliary node gNB base station addition request confirmation) message after completing the relevant admission. The PScell cell is one of the candidate SN cells. The PScell cell supports voice services, and the voice and audio points are in the voice frequency band supported by the terminal. The dual-connected frequency band of the PScell cell can be supported by the terminal, and the terminal is within the signal overlapping area of the CU cell Cell1 and the PScell cell. If there are multiple candidate PScell cells that can be used as the PScell cell of the terminal, the cell with the highest signal strength can be selected as the PScell cell.

The SN to which the PScell belongs belongs to the neighboring base station.

In some embodiments, if there are multiple candidate SNs, the SgNB Addition Request message is preferentially sent to the SN with the highest frequency priority, and if there are multiple SNs with the highest frequency priority, the SN with the best signal is selected Send SgNBAdditionRequest message.

In step S924, the neighboring base station sends a secondary node gNB base station addition request confirmation message to CU cell 1.

The SgNB Addition Request Acknowledge message carries the RRC Reconfiguration message of the neighboring base station. The RRC Reconfiguration message carries the radio resource parameters of the PScell.

Step S925, CU cell 1 sends a downlink RRC message transmission message to DU cell 1.

The DL RRC MESSAGE TRANSFER message carries the RRC Reconfiguration message.

Step S926, the DU cell 1 sends an RRC reconfiguration message to the terminal.

After receiving the RRC Reconfiguration message, the terminal performs radio resource configuration according to the radio resource parameters of the PScell cell, performs downlink synchronization with the PScell cell, and completes uplink synchronization through a random access process.

Step S927, the terminal and the neighboring base station complete random access.

Step S928, the terminal sends an RRC reconfiguration complete message to DU cell 1.

In step S929, the DU cell 1 sends an uplink RRC message transmission message to the CU cell 1.

The UL RRC MESSAGE TRANSFER message carries the RRC Reconfiguration Complete message.

In step S930, the CU cell 1 sends a secondary node gNB base station reconfiguration complete (SgNB Reconfiguration Complete) message to the neighboring base station.

The terminal and the base station successfully add the SN, and the PScell of the SN can share voice services.

The PScell cell may be a gNB or an eNB cell.

The PScell cell carries voice services, which means that the voice service bearer data of the CU cell of the Master Node (MN) is sent to the terminal through the air interface of the PScell of the Secondary Node (SN).

In this embodiment, the terminal does not need to be redirected or switched to move the terminal to the voice and audio point cell. The voice service bearer data is loaded through the PScell sub-node of the secondary node SN, which can effectively reduce the delay caused by the interaction of redirection or switching signaling messages To improve user experience.

This embodiment provides a voice call device.

In one embodiment, the voice call device includes but is not limited to: a first processor 1010 and a first memory 1020. As shown in FIG. 10, it is a structural diagram of a voice call device on a base station side according to an embodiment of the present application.

The first processor 1010 is configured to execute a voice call program stored in the first memory 1020 to implement the following steps of the voice call method executed on the base station side: interact with other base stations to obtain voices of the other base stations Service support information; sending a broadcast message to the terminal, the broadcast message carrying the voice service support information of the base station and the voice service support information of the other base station, so that when the terminal initiates a voice call, according to the broadcast message, Access to a base station cell that supports voice services and whose voice points are in the voice band of the terminal and establish a voice service connection; or, when the terminal accesses the base station cell, receive a voice call initiated by the terminal; if the If the base station cell does not support voice service, the voice frequency band information of the terminal is obtained; based on the voice frequency band information of the terminal, the terminal is controlled to migrate voice service to a neighboring cell, so that the terminal and the neighboring cell establish a voice service Connection; wherein the speech and audio points of the neighboring cell are in the voice frequency band of the terminal.

In another embodiment, the voice call device includes but is not limited to: a second processor 1030 and a second memory 1040. As shown in FIG. 11, it is a structural diagram of a terminal-side voice call device according to an embodiment of the present application.

The second processor 1030 is configured to execute a voice call program stored in the second memory 1040 to implement the following steps of the voice call method performed on the terminal side: receiving a broadcast message sent by a base station, where the broadcast message carries the Base station's voice service support information and other base station's voice service support information; when initiating a voice call, access based on the base station's voice service support information and the other base station's voice service support information carried in the broadcast message Support the voice service, and the voice and audio points are in the base station cell of the terminal's voice frequency band, and establish a voice service connection; or, initiate a voice call to the accessed base station cell; after receiving the voice frequency band sent by the base station cell After obtaining the request, send the voice frequency band information of the terminal to the base station cell, so that the base station cell determines that the voice service is supported according to the voice frequency band information of the terminal, and the voice point is in the voice frequency band of the terminal Neighboring cell; under the control of the base station cell, migrate voice services to the neighboring cell and establish a voice service connection.

An embodiment of the present application also provides a storage medium (computer-readable storage medium). One or more programs are stored in the storage medium here. Wherein, the storage medium may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid-state hard disk; the memory may also include combination.

When one or more programs in the storage medium can be executed by one or more processors, the steps of the voice call method executed on the base station side or the steps of the voice call method executed on the terminal side are implemented.

The processor is configured to execute a voice call program stored in a memory to implement the following steps of the voice call method performed on the base station side: interact with other base stations to obtain voice service support information of the other base stations; to the terminal Sending a broadcast message, where the broadcast message carries the voice service support information of the base station and the voice service support information of the other base station, so that when the terminal initiates a voice call, the terminal supports access to the voice service according to the broadcast message, And the voice point is in the base station cell in the voice frequency band of the terminal and establishes a voice service connection; or, when the terminal accesses the base station cell, receives a voice call initiated by the terminal; if the base station cell does not support voice service , The voice frequency band information of the terminal is obtained; based on the voice frequency band information of the terminal, the terminal is controlled to migrate voice services to a neighboring cell, so that the terminal and the neighboring cell establish a voice service connection; wherein, the The speech and audio points of the neighboring cell are in the voice frequency band of the terminal.

The processor is configured to execute a voice call program stored in a memory to implement the following steps of the voice call method performed on the base station side: receiving a broadcast message sent by the base station, the broadcast message carrying voice service support information of the base station And the voice service support information of other base stations; when initiating a voice call, according to the voice service support information of the base station and the voice service support information of the other base stations carried in the broadcast message, access to support voice services, and language The base station cell whose audio point is in the voice frequency band of the terminal, and establishes a voice service connection; or, initiates a voice call to the accessed base station cell; after receiving the voice band acquisition request sent by the base station cell, The base station cell sends the voice frequency band information of the terminal, so that the base station cell determines a neighboring cell that supports voice services based on the voice frequency band information of the terminal, and the speech and audio points are in the voice frequency band of the terminal; Under the control of the base station cell, the voice service is migrated to the neighbor cell and a voice service connection is established.

Those of ordinary skill in the art may understand that all or some of the steps, systems, and functional modules / units in the method disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components are executed in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage media includes both volatile and nonvolatile implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules, or other data Sex, removable and non-removable media. Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium for storing desired information and accessible by a computer. In addition, it is well known to those of ordinary skill in the art that the communication medium generally contains computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium .

Although the preferred embodiments of the present application have been disclosed for illustrative purposes, those skilled in the art will realize that various improvements, additions, and substitutions are also possible, and therefore, the scope of the present application should not be limited to the above embodiments.

Claims

A voice call method, executed on the base station side, includes:

Obtain voice service support information of the other base station by interacting with other base stations; send a broadcast message to the terminal, the broadcast message carrying the voice service support information of the base station and the voice service support information of the other base station, so that all When the terminal initiates a voice call, according to the broadcast message, access a base station cell that supports voice services and whose voice point is in the voice frequency band of the terminal and establish a voice service connection;

or,

When a terminal accesses a base station cell, it receives a voice call initiated by the terminal; if the base station cell does not support voice services, acquires the voice frequency band information of the terminal; controls the terminal according to the voice frequency band information of the terminal The voice service is migrated to a neighboring cell, so that the terminal establishes a voice service connection with the neighboring cell; wherein the voice and audio points of the neighboring cell are in the voice frequency band of the terminal.
The method according to claim 1, wherein controlling the terminal to migrate voice services to neighboring cells based on the voice frequency band information of the terminal includes:

According to the voice frequency band information of the terminal, determine a neighboring cell that supports voice services and whose speech and audio points are in the voice frequency band of the terminal;

Sending a redirection instruction message to the terminal; wherein the redirection instruction message carries speech and audio point information of the neighboring cell;

Through the redirection indication message, the terminal is redirected to the neighboring cell.
The method according to claim 1, wherein controlling the terminal to migrate voice services to neighboring cells based on the voice frequency band information of the terminal includes:

Add a secondary carrier cell or a primary secondary cell according to the voice frequency band information of the terminal; wherein the added secondary carrier cell or secondary cell supports voice services, and the voice and audio points are among the voice and audio points of the terminal;

Sending a reconfiguration message to the terminal; carrying the added radio resource parameters of the secondary carrier cell or the secondary cell in the reconfiguration message;

Through the reconfiguration message, the terminal is allowed to establish a voice service bearer with the added secondary carrier cell or secondary cell.
A voice call method, executed on the terminal side, including:

Receiving a broadcast message sent by a base station, the broadcast message carrying voice service support information of the base station and voice service support information of other base stations; when initiating a voice call, according to the voice service support of the base station carried in the broadcast message Information and the voice service support information of the other base station, access to a base station cell that supports voice service, and the voice point is in the voice frequency band of the terminal, and establish a voice service connection;

or,

Initiate a voice call to the accessed base station cell; after receiving the voice frequency band acquisition request sent by the base station cell, send the terminal's voice frequency band information to the base station cell, so that the base station cell according to the terminal's voice The frequency band information determines the neighboring cell that supports the voice service and the voice point is in the voice frequency band of the terminal; under the control of the base station cell, the voice service is migrated to the neighboring cell and a voice service connection is established.
The method according to claim 4, wherein, under the control of the base station cell, migrating voice services to the neighboring cell includes:

Receiving a redirection indication message sent by the base station cell; wherein the redirection indication message carries speech and audio point information of the neighboring cell;

Attach to the neighboring cell according to the speech and audio point information of the neighboring cell.
The method according to claim 4, wherein, under the control of the base station cell, migrating voice services to the neighboring cell includes:

Receiving a reconfiguration message sent by the base station cell; wherein the reconfiguration message carries the radio resource parameters of the secondary carrier cell or the secondary cell;

Perform radio resource configuration according to the radio resource parameters of the secondary carrier cell or the secondary cell, and establish a voice service bearer with the secondary carrier cell or the secondary cell.
A voice call device is provided on the base station side, the voice call device includes a first processor and a first memory; the first processor is configured to execute the voice stored in the first memory A calling program to realize the voice calling method according to any one of claims 1 to 3.
A voice calling device is provided on the terminal side, the voice calling device includes a second processor and a second memory; the second processor is configured to execute the voice stored in the second memory A calling program to realize the voice calling method according to any one of claims 4 to 6.
A storage medium provided on the base station side, the storage medium stores one or more programs, and the one or more programs can be executed by one or more processors to implement claims 1 to 3 The voice call method described in any one of the above.
A storage medium, the storage medium is provided on the terminal side, the storage medium stores one or more programs, the one or more programs can be executed by one or more processors to implement claims 4 to 6 The voice call method described in any one of the above.