CN116074804A

CN116074804A - Communication method and device and storage medium

Info

Publication number: CN116074804A
Application number: CN202111288301.5A
Authority: CN
Inventors: 吴诚
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2023-05-05

Abstract

The disclosure provides a communication method, a communication device and a storage medium. The method comprises the following steps: in response to determining that the first communication system is switched to the second communication system, determining that a network side device in the second communication system is not configured with a target Data Radio Bearer (DRB) corresponding to an IMS service of the first terminal, wherein the system performance of the first communication system is lower than that of the second communication system; sending an MRU request message to network side equipment in a second communication system, wherein the MRU request message is used for requesting the network side equipment in the second communication system to configure a target DRB for a first terminal; receiving configuration information for configuring a target DRB, which is sent by network side equipment in a second communication system; and adding a target DRB based on the configuration information, wherein the target DRB is used for the first terminal to communicate with the IMS core network device under the second communication system. The method and the device ensure normal operation of the voice call service, improve the reliability of the voice call service and have high availability.

Description

Communication method and device and storage medium

Technical Field

The disclosure relates to the technical field of terminals, and in particular relates to a communication method, a communication device and a storage medium.

Background

Currently, VOLTE (Voice over Long Term Evolution, voice service based on long term evolution) is a mainstream application of mobile voice communication as a high-definition voice service based on 4G (The 4th Generation Mobile Communication Technology, 4th generation mobile communication technology). Although 5G (The 5th Generation Mobile Communication Technology, 5th generation mobile communication technology) SA (Stand-Alone) networks are becoming popular in The home and abroad layout, voNR (Voice over New Radio, voice service based on new air interface) technology is not commonly used.

The 5G voice technology adopts an EPSFB (Evolved Packet System Fallback, evolved packet system fallback 4G) technology, namely, a terminal is in the 5G system at ordinary times, and can fall back into the 4G system to perform VoLTE voice call when the terminal performs voice call, and the terminal returns to NR (Inter-Radio Access Technology, inter-system switching) after the call is finished so as to acquire better data service.

Disclosure of Invention

In view of this, the present application discloses a communication method and apparatus, and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a communication method, which is applied to a first terminal, the method including:

In response to determining that a first communication system is switched to a second communication system, determining that network side equipment in the second communication system is not configured with a target Data Radio Bearer (DRB) corresponding to an IP Multimedia System (IMS) service of the first terminal, wherein the system performance of the first communication system is lower than that of the second communication system;

transmitting a Mobile Registration Update (MRU) request message to the network side equipment in the second communication system, wherein the MRU request message is used for requesting the network side equipment in the second communication system to configure the target DRB for the first terminal;

receiving configuration information sent by the network side equipment in the second communication system and used for configuring the target DRB;

and adding the target DRB based on the configuration information, wherein the target DRB is used for the first terminal to communicate with IMS core network equipment under the second communication system.

Optionally, after adding the target DRB, the method further comprises:

receiving a first invitation request message forwarded by the IMS core network device and used for inviting the first terminal to carry out voice call through the target DRB;

and carrying out voice call with a second terminal based on the first invitation request message, wherein the second terminal is a terminal for sending the first invitation request message to the core network equipment.

Optionally, after adding the target DRB, the method further comprises:

sending a second invitation request message for inviting a third terminal to perform voice call to the IMS core network device through the target DRB;

and after the IMS core network device forwards the second invitation request message to the third terminal, carrying out voice communication with the third terminal.

Optionally, the determining that the network side device in the second communication system does not configure the target data radio bearer DRB corresponding to the IP multimedia system IMS service of the first terminal includes:

in response to determining that the network-side device in the second communication system does not configure a DRB corresponding to a target packet data unit, PDU, session for the first terminal, it is determined that the network-side device in the second communication system does not configure the target DRB, the target PDU session being a PDU session corresponding to the IMS service.

Optionally, the MRU request message includes at least a session request message for requesting a target PDU session, where the target PDU session is a PDU session corresponding to the IMS service.

Optionally, the receiving the configuration information sent by the network side device in the second communication system for configuring the target DRB includes:

And receiving the configuration information sent by the network side equipment in the second communication system through a Radio Resource Control (RRC) reconfiguration message.

According to a second aspect of the embodiments of the present disclosure, there is provided a communication method applied to a network side device in a second communication system, the method including:

receiving a mobile registration update MRU request message sent by a first terminal; the MRU request message is sent by the first terminal in response to determining that the first communication system is switched to the second communication system, and determining that the network side device in the second communication system is not configured with a target data radio bearer DRB, where the MRU request message is used to request the network side device in the second communication system to configure the target DRB for the first terminal, where the target DRB is a DRB corresponding to an IP multimedia system IMS service of the first terminal, and a system performance of the first communication system is lower than a system performance of the second communication system;

determining configuration information for configuring the target DRB based on the MRU request message;

and sending the configuration information to the first terminal, wherein the configuration information is used for the first terminal to communicate with IMS core network equipment under the second communication system through the target DRB after adding the target DRB.

Optionally, before determining the configuration information, the method further comprises:

and determining that the target DRB needs to be configured for the first terminal based on the session request message included in the MRU request message.

Optionally, the sending the configuration information to the first terminal includes:

and sending the configuration information to the first terminal through a Radio Resource Control (RRC) reconfiguration message.

According to a third aspect of embodiments of the present disclosure, there is provided a communication apparatus, the apparatus being applied to a first terminal, the apparatus comprising:

a first determining module, configured to determine, in response to determining that a handover is performed from a first communication system to a second communication system, that a network side device in the second communication system is not configured with a target data radio bearer DRB corresponding to an IP multimedia system IMS service of the first terminal, where a system performance of the first communication system is lower than a system performance of the second communication system;

a first sending module, configured to send a mobile registration update MRU request message to the network side device in the second communication system, where the MRU request message is used to request the network side device in the second communication system to configure the target DRB for the first terminal;

A first receiving module, configured to receive configuration information sent by the network side device in the second communication system and used to configure the target DRB;

and the DRB adding module is used for adding the target DRB based on the configuration information, wherein the target DRB is used for the first terminal to communicate with IMS core network equipment under the second communication system.

Optionally, the apparatus further comprises:

a third receiving module, configured to receive, through the target DRB, a first invite request message forwarded by the IMS core network device, where the first invite request message is used to invite the first terminal to perform a voice call;

and the first call module is used for carrying out voice call with a second terminal based on the first invitation request message, and the second terminal is a terminal for sending the first invitation request message to the core network equipment.

Optionally, the apparatus further comprises:

a third sending module, configured to send, to the IMS core network device through the target DRB, a second invite request message for inviting a third terminal to perform a voice call;

and the second call module is used for carrying out voice call with the third terminal after the IMS core network device forwards the second invitation request message to the third terminal.

Optionally, the first determining module includes:

a determining submodule, configured to determine that the network side device in the second communication system does not configure the target DRB for the network side device in the second communication system in response to determining that the network side device in the second communication system does not configure the DRB corresponding to a target packet data unit PDU session, where the target PDU session is a PDU session corresponding to the IMS service.

Optionally, the first receiving module includes:

and the receiving sub-module is used for receiving the configuration information sent by the network side equipment in the second communication system through the Radio Resource Control (RRC) reconfiguration message.

According to a fourth aspect of embodiments of the present disclosure, there is provided a communication apparatus applied to a network-side device in a second communication system, the apparatus including:

the second receiving module is used for receiving a mobile registration update MRU request message sent by the first terminal; the MRU request message is sent by the first terminal in response to determining that the first communication system is switched to the second communication system, and determining that the network side device in the second communication system is not configured with a target data radio bearer DRB, where the MRU request message is used to request the network side device in the second communication system to configure the target DRB for the first terminal, where the target DRB is a DRB corresponding to an IP multimedia system IMS service of the first terminal, and a system performance of the first communication system is lower than a system performance of the second communication system;

A second determining module, configured to determine configuration information for configuring the target DRB based on the MRU request message;

and the second sending module is used for sending the configuration information to the first terminal, wherein the configuration information is used for communicating with IMS core network equipment under the second communication system through the target DRB after the target DRB is added by the first terminal.

Optionally, the apparatus further comprises:

and a fourth determining module, configured to determine that the target DRB needs to be configured for the first terminal, based on the session request message included in the MRU request message.

Optionally, the second sending module includes:

and the sending sub-module is used for sending the configuration information to the first terminal through a Radio Resource Control (RRC) reconfiguration message.

According to a fifth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the communication method of any of the above.

According to a sixth aspect of embodiments of the present disclosure, there is provided a communication apparatus comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to execute the executable instructions to implement the steps of the communication method of any of the above.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

in the disclosure, under the condition that the inter-system switching is switched back to the second communication system by the first communication system, if it is determined that the network side equipment in the second communication system does not configure the target DRB corresponding to the IMS service of the first terminal, the first terminal initiates an MRU request message, and requests the network side equipment in the second communication system to configure the target DRB for the first terminal. Further, the first terminal may add the target DRB based on configuration information returned by the network side device in the second communication system, and the first terminal may communicate with the IMS core network device through the target DRB in the second communication system. The method and the device can ensure the normal operation of the voice call service, improve the reliability of the voice call service and have high availability.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a flow chart of a communication method according to an exemplary embodiment of the present disclosure;

FIG. 2 is a flow chart illustrating another communication method according to an exemplary embodiment of the present disclosure;

FIG. 3 is a flow chart illustrating another communication method according to an exemplary embodiment of the present disclosure;

FIG. 4 is a flow chart illustrating another communication method according to an exemplary embodiment of the present disclosure;

FIG. 5 is a flow chart illustrating another communication method according to an exemplary embodiment of the present disclosure;

FIG. 6 is a block diagram of a communication device shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 7 is a block diagram of a communication device shown in accordance with an exemplary embodiment of the present disclosure;

FIG. 8 is a schematic diagram of a communication device according to an exemplary embodiment of the present disclosure;

fig. 9 is a schematic diagram of another communication device according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the invention. Rather, they are merely examples of apparatus and methods consistent with aspects of the invention as detailed in the accompanying claims.

After the NR system initiates the voice call, the terminal can fall back to the 4G system through the EPSFB, and after the call is ended, the terminal returns to the NR system through the IRAT. The whole process requires that the network side equipment can correctly map and configure the service wireless resources related to 4G and 5G. However, sometimes, due to temporary network failure, after the IRAT of the terminal returns to the NR, DRBs (Data Radio Bearer ) corresponding to the IMS (IP Multimedia Subsystem, IP multimedia system) service are not configured, so that the voice call is missed when the terminal is used as a called terminal, and normal call service is affected.

In order to solve the above-mentioned problems, the present disclosure provides a communication method that can ensure normal operation of a voice call service even if a network failure occurs. The communication method provided by the present disclosure will be described first from the terminal side.

Referring to fig. 1, fig. 1 is a flowchart illustrating a communication method according to an exemplary embodiment of the present disclosure, which is described from a first terminal side, wherein the first terminal includes, but is not limited to, a mobile phone, a notebook computer, a desktop computer, an ipad, etc., and the first terminal may support operation under at least one communication system. As shown in fig. 1, the communication method includes the steps of:

in step 101, in response to determining that the handover from the first communication system to the second communication system is performed, it is determined that the network side device in the second communication system does not configure a target data radio bearer DRB corresponding to the IP multimedia system IMS service of the first terminal.

In an embodiment of the disclosure, the system performance of the first communication system is lower than the system performance of the second communication system. For example, the first communication system is a 4G system and the second communication system is a 5G system. If, at the time of performing a heterogeneous system handover, i.e., a handover from a first communication system to a second communication system, the first terminal may determine that the network side device of the second communication system is not configured with the target DRB due to a temporary failure of the network side device in the second communication system. Wherein the network side equipment includes but is not limited to a base station.

In step 102, a mobile registration update, MRU, request message is sent to the network side device in the second communication system.

The MRU request message is used for requesting the network side equipment in the second communication system to configure the target DRB for the first terminal.

In step 103, configuration information for configuring the target DRB, which is sent by the network side device in the second communication system, is received.

In an embodiment of the present disclosure, the configuration information includes, but is not limited to, at least one of: the time-frequency domain resource information of the target DRB, the DRB identification information of the target DRB and the service type information carried by the target DRB.

In step 104, the target DRB is added based on the configuration information.

In the embodiment of the disclosure, the target DRB is used for the first terminal to communicate with the IMS core network device under the second communication system.

In the above embodiment, if the first terminal determines that the network side device in the second communication system does not configure the target DRB corresponding to the IMS service of the terminal under the condition that the inter-system handover is switched back to the second communication system by the first communication system, the first terminal initiates an MRU request message, and requests the network side device in the second communication system to configure the target DRB for the first terminal. Further, the first terminal may add a target DRB based on configuration information returned by the network side device in the second communication system, so as to communicate with the IMS core network device under the second communication system through the target DRB. Therefore, even if the network side equipment in the second communication system fails, the normal operation of the voice call service can be ensured, the reliability of the voice call service is improved, and the availability is high.

In some alternative embodiments, referring to fig. 2, fig. 2 is a flow chart of another communication method according to the embodiment shown in fig. 1, after step 104, the method further comprises the steps of:

in step 105, a first invite request message forwarded by the IMS core network device for inviting the first terminal to perform a voice call is received through the target DRB.

In the embodiment of the disclosure, the first terminal may receive a first invite request message forwarded by the IMS core network device, i.e. a SIP INVITE request message, based on the target DRB.

In step 106, a voice call is performed with the second terminal based on the first invite request message.

In the embodiment of the present disclosure, the second terminal is a terminal that sends the first invite request message to the core network device, and corresponds to a calling terminal, and the first terminal may be used as a called terminal to perform a voice call with the second terminal that is used as the calling terminal. Wherein the second terminal is a different terminal than the first terminal.

When the voice call is performed, the network side devices corresponding to the first terminal and the second terminal perform inter-system switching, and the second communication system is switched to the first communication system, for example, the NR system is switched to the 4G system.

The network side equipment of the second communication system corresponding to the first terminal releases a default DRB and a target DRB configured for the first terminal, wherein the default DRB refers to a DRB which is configured for the terminal by default and is used for executing data service for the terminal after the network side equipment completes registration for the terminal. And the network side equipment of the second communication system corresponding to the second terminal releases the default DRB and the target DRB configured for the second terminal. The network side equipment of the first communication system corresponding to the first terminal configures a default DRB and a DRB corresponding to the IMS service for the first terminal, and the network side equipment of the first communication system corresponding to the second terminal configures a default DRB and a DRB corresponding to the IMS service for the second terminal. And the first terminal and the second terminal carry out voice call based on the DRB corresponding to each IMS service under the first communication system until the voice call is ended, and the first terminal and the second terminal are switched back to the second communication system by the first communication system.

In the above embodiment, the first terminal is switched from the first communication system to the second communication system, even if the network side device of the second communication system fails, the network side device of the second communication system may configure the target DRB for the first terminal through the MRU request message initiated by the first terminal, and the first terminal may receive the first invite request message based on the target DRB and perform a voice call between the called terminal and the second terminal as the calling terminal, thereby ensuring normal performance of the voice service, improving reliability of the voice call service, and having high availability.

In some alternative embodiments, referring to fig. 3, fig. 3 is a flow chart of another communication method according to the embodiment shown in fig. 1, after step 104, the method further comprises the steps of:

in step 107, a second invite request message for inviting the third terminal to perform a voice call is sent to the IMS core network device through the target DRB.

In the embodiment of the present disclosure, the first terminal may transmit a second invite request message, i.e., SIP INVITE request message, based on the target DRB. The third terminal is a terminal different from the first terminal, and the third terminal and the second terminal may be the same or different terminals, which is not limited in this disclosure.

In step 108, after the IMS core network device forwards the second invite request message to the third terminal, a voice call is performed with the third terminal.

In the embodiment of the present disclosure, the first terminal may be used as a calling terminal to perform a voice call with a third terminal that is used as a called terminal and receives the second invite request message, and the voice call process is similar to the voice call process in step 106, which is not described herein.

In the above embodiment, the network side device corresponding to the first terminal is switched from the first communication system to the second communication system, and even if the network side device of the second communication system fails, the network side device of the second communication system may configure the target DRB for the first terminal through the MRU request message initiated by the first terminal, further, the first terminal may send the second invite request message to the IMS core network device based on the target DRB, and perform a voice call with the third terminal that receives the second invite request message as the calling terminal, thereby ensuring normal operation of the voice service, improving reliability and high availability of the voice call service.

In some alternative embodiments, the first terminal may determine whether the network side device in the second communication system configures a target data radio bearer DRB corresponding to the IP multimedia system IMS service of the first terminal in the following manner:

based on whether the network side device configures a DRB corresponding to a target PDU (Packet Data Unit) session, it is determined whether the network side device in the second communication system configures the target DRB.

Wherein the target PDU session is a PDU session corresponding to the IMS service.

In the embodiment of the disclosure, the LTE network service is performed based on an EPS bearer, and the identifier of the bearer is EBI (EPS Bearer Identity, EPS bearer identifier). The 5G network traffic is performed on a PDU session basis, the identity of which is PSI (PDU Session Identity ).

When the network side equipment corresponding to the first terminal is switched in the 4G system and the 5G system, PSI and EBI have a fixed mapping relation. EBI and DRB are mapped one-to-one in the LTE system, and PSI and DRB are mapped one-to-one in the 5G system. Each EPS bearer, each PDU session, and the services supported by the PDU session are matched one to one. For example, when the network side device establishes a PDU session used by an IMS service, the network side device indicates that the service name accessed by the PDU session is IMS.

The first terminal can determine whether the target DRB is configured by monitoring whether the target PDU session corresponding to the IMS service is configured by the 5G network after the first terminal returns to 5G from the 4G IRAT.

If the network side equipment of the second communication system does not configure the DRB corresponding to the target PDU session, determining that the network side equipment of the second communication system does not configure the target DRB. If the network side equipment of the second communication system configures the DRB corresponding to the target PDU session, determining that the network side equipment of the second communication system configures the target DRB.

In the above embodiment, the first terminal may determine whether the network side device in the second communication system configures a DRB corresponding to the target PDU session for the first terminal based on the EPS bearer, the PDU session, and a mapping relationship between services supported by the PDU session, so as to determine whether the network side device in the second communication system configures the target DRB for the first terminal, where the target PDU session is a PDU session corresponding to the IMS service, and the target DRB is a DRB corresponding to the IMS service of the first terminal, and the subsequent first terminal may communicate with the IMS core network device under the second communication system through the target DRB. The realization is simple and convenient, and the availability is high.

In some alternative embodiments, at least a session request message for requesting a target PDU session, where the target PDU session is a PDU session corresponding to the IMS service, may be included in the MRU request message sent by the first terminal.

The network side device in the second communication system determines, based on the session request message, that the target DRB needs to be configured for the first terminal.

In the foregoing embodiment, the first terminal may include a session request message for requesting the target PDU session in the MRU request message, so that the network side device in the second communication system determines, based on the session request message, that the target DRB needs to be configured for the first terminal. The method and the device achieve the aim of ensuring normal operation of the voice service of the first terminal even if the network side equipment fails.

In some alternative embodiments, the first terminal may receive an RRC (Radio Resource Control ) reconfiguration message sent by the network-side device in the second communication system, determine configuration information based on the RRC reconfiguration message, and thereby add the target DRB based on the configuration information. When the second communication system is a 5G system, the RRC reconfiguration message may be an NR RRC reconfiguration message, and the target DRB is configured to communicate with an IMS core network device by using the first terminal in the second communication system.

In the above embodiment, the first terminal may receive the configuration information sent by the network side device in the second communication system through the RRC reconfiguration message, so as to add the target DRB to the first terminal, which is simple and convenient to implement and has high availability.

The communication method provided by the present disclosure will be described from the network side device side.

Referring to fig. 4, fig. 4 is a flowchart of a communication method according to an exemplary embodiment of the present disclosure, where the embodiment is described from a network side device side of a second communication system, which may include, but is not limited to, a 5G system, and the network side device includes, but is not limited to, a base station, as shown in fig. 4, and the communication method includes the steps of:

in step 401, a mobile registration update, MRU, request message sent by a first terminal is received.

In the embodiment of the disclosure, the MRU request message is sent by the first terminal in response to determining that the first communication system is switched to the second communication system, and determining that the network side device in the second communication system is not configured with a target data radio bearer DRB, and the MRU request message is used for requesting the network side device in the second communication system to configure the first terminal with a target data radio bearer DRB, where the target DRB is a DRB corresponding to an IP multimedia system IMS service of the first terminal.

In the embodiment of the disclosure, the system performance of the first communication system is lower than that of the second communication system, for example, the first communication system may be a 4G system and the second communication system may be a 5G system.

In step 402, configuration information for configuring the target DRB is determined based on the MRU request message.

In step 403, the configuration information is sent to the first terminal.

In the embodiment of the present disclosure, after the configuration information is used for adding the target DRB by the first terminal, the first terminal communicates with an IMS core network device under the second communication system through the target DRB.

In the above embodiment, the network side device in the second communication system may determine, for the first terminal, configuration information of the target DRB based on the MRU request message sent by the first terminal, and send the configuration information to the first terminal, so that after the first terminal adds the target DRB based on the configuration information, the first terminal communicates with the IMS core network device under the second communication system through the target DRB, thereby ensuring that the voice service of the first terminal can be performed normally.

In some alternative embodiments, the MRU request message includes at least a session request message for requesting a target PDU session, where the target PDU session is a PDU session corresponding to the IMS service.

Accordingly, after receiving the MRU request message sent by the first terminal, the network side device in the second communication system may determine, based on the session request message included in the MRU request message, that the target DRB needs to be configured for the first terminal. Further, the network side device in the second communication system performs the

above steps

402 and 403.

In the above embodiment, the network side device in the second communication system may determine, based on the session request message in the MRU request message, that the target DRB needs to be configured for the terminal, and then send the configuration information of the configured target DRB to the terminal. Under the condition that network side equipment in the second communication system fails, a target DRB can be reconfigured for the terminal, normal operation of the terminal voice service is ensured, and the availability is high.

In some alternative embodiments, the network side device of the second communication system may send the configuration information to the first terminal through an RRC reconfiguration message. The second communication system is a 5G system, and the network side equipment of the second communication system can send the configuration information to the first terminal through NR RRC reconfiguration information.

In some alternative embodiments, referring to fig. 5, fig. 5 is a flow chart of another communication method shown in an exemplary embodiment of the present disclosure, the communication method comprising the steps of:

in step 501, a terminal registration procedure.

The second terminal and the first terminal are both 5G terminals, and complete the registration process on the 5G base station, that is, the second terminal completes the registration on the gnb#1, the first terminal completes the registration on the gnb#2, and the gnb#1 and the gnb#2 may be the same or different base stations, which is not limited in this disclosure. Finally, the second terminal and the first terminal both reside in the 5G SA network environment, and the second terminal and the first terminal support VoLTE service and are configured with DRB corresponding to IMS service.

In step 502, the second terminal sends SIP INVITE (invite) request message to the IMS core network device.

In step 503, the IMS core network device forwards the SIP INVITE request message to the first terminal.

In step 504, the second terminal and the first terminal switch to the LTE system, and release the DRB corresponding to the IMS service configured by the 5G base station.

Wherein, neither the second terminal nor the first terminal supports VoNR, and therefore, it is necessary to switch to LTE through EPSFB. And the 5G base station gnb#1 may release the default DRB and the IMS DRB configured for the second terminal, and the gnb#2 may release the default DRB and the IMS DRB configured for the first terminal. In addition, the 4G base station enb#1 may configure a default DRB and an IMS DRB for the second terminal, and the enb#2 may configure a default DRB and an IMS DRB for the first terminal.

In step 505, after the VoLTE voice call between the second terminal and the first terminal is ended, the different system between the second terminal and the first terminal switches back to the 5G system.

The enb#1 may release the default DRB and the IMS DRB configured for the second terminal, and the enb#2 may release the default DRB and the IMS DRB configured for the first terminal.

In step 506, gnb#1 configures a default DRB for the second terminal and gnb#2 configures a default DRB for the first terminal.

In step 507, the gnb#1 configures a DRB corresponding to the IMS service for the second terminal.

In the embodiment of the present disclosure, due to a temporary network failure, the gnb#2 does not configure a target DRB for the first terminal, and the target DRB is a DRB corresponding to an IMS service of the first terminal.

In step 508, the first terminal sends an MRU request message to the gnb#2.

The MRU request message is configured to request the gnb#2 to configure the target DRB for the first terminal, where the MRU request message includes at least a session request message for requesting a target PDU session, and the target PDU session is a PDU session corresponding to the IMS service.

In step 509, after the gnb#2 determines configuration information for configuring the target DRB, the configuration information is sent to the first terminal.

In the embodiment of the disclosure, the gnb#2 may send the configuration information to the first terminal through an NR RRC reconfiguration message.

In step 510, the first terminal receives the invite request message forwarded by the IMS core network device based on the target DRB, and performs a voice call with the second terminal.

In the above embodiment, the MRU request message may be actively initiated by the first terminal, so that the network side device in the second communication system sends the configuration information of the target DRB to the first terminal, and after the first terminal adds the target DRB based on the configuration information, the first terminal may communicate with the IMS core network device under the second communication system based on the target DRB. The problem that the first terminal cannot receive the incoming call due to temporary faults of network side equipment is solved, the reliability of voice communication is improved, the implementation is simple and convenient, and the availability is high.

Corresponding to the foregoing embodiment of the application function implementation method, the present disclosure further provides an embodiment of the application function implementation apparatus.

Referring to fig. 6, fig. 6 is a block diagram of a communication apparatus according to an exemplary embodiment, the apparatus being applied to a first terminal, the apparatus comprising:

a first determining module 601, configured to determine, in response to determining that a handover is performed from a first communication system to a second communication system, that a network side device in the second communication system is not configured with a target data radio bearer DRB corresponding to an IP multimedia system IMS service of the first terminal, where a system performance of the first communication system is lower than a system performance of the second communication system;

A first sending module 602, configured to send a mobile registration update MRU request message to the network side device in the second communication system, where the MRU request message is used to request the network side device in the second communication system to configure the target DRB for the first terminal;

a first receiving module 603, configured to receive configuration information sent by the network side device in the second communication system and used to configure the target DRB;

and the DRB adding module 604 is configured to add the target DRB, where the target DRB is used for the first terminal to communicate with IMS core network equipment under the second communication system, based on the configuration information.

Optionally, the apparatus further comprises:

Optionally, the first determining module includes:

Optionally, the first receiving module includes:

Referring to fig. 7, fig. 7 is a block diagram of another communication apparatus according to an exemplary embodiment, the apparatus being applied to a network side device in a second communication system, the apparatus comprising:

A second receiving module 701, configured to receive a mobile registration update MRU request message sent by the first terminal; the MRU request message is sent by the first terminal in response to determining that the first communication system is switched to the second communication system, and determining that the network side device in the second communication system is not configured with a target data radio bearer DRB, where the MRU request message is used to request the network side device in the second communication system to configure the target DRB for the first terminal, where the target DRB is a DRB corresponding to an IP multimedia system IMS service of the first terminal, and a system performance of the first communication system is lower than a system performance of the second communication system;

a second determining module 702, configured to determine configuration information for configuring the target DRB based on the MRU request message;

and a second sending module 703, configured to send the configuration information to the first terminal, where the configuration information is used for the first terminal to communicate with an IMS core network device under the second communication system through the target DRB after adding the target DRB.

Optionally, the apparatus further comprises:

Optionally, the second sending module includes:

For the device embodiments, reference is made to the description of the method embodiments for the relevant points, since they essentially correspond to the method embodiments. The apparatus embodiments described above are merely illustrative, wherein the elements described above as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the objectives of the disclosed solution. Those of ordinary skill in the art will understand and implement the present invention without undue burden.

Accordingly, the present disclosure also provides a computer-readable storage medium storing a computer program for implementing the steps of any one of the above-described communication methods when executed by a processor.

Accordingly, the present disclosure also provides a communication apparatus, including:

a processor;

a memory for storing processor-executable instructions;

Fig. 8 is a block diagram illustrating a communication device according to an exemplary embodiment. For example, apparatus 800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, exercise device, personal digital assistant, or the like.

Referring to fig. 8, apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 816, and a communication component 818.

The processing component 802 generally controls overall operation of the apparatus 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

One of the processors 820 in the processing component 802 may be configured to perform any of the communication methods described above at the terminal side.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phonebook data, messages, pictures, videos, and the like. The memory 804 may be implemented by any type or combination of volatile or nonvolatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disk.

The power supply component 806 provides power to the various components of the device 800. The power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.

The multimedia component 808 includes a screen between the device 800 and the user that provides an output interface. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or sliding action, but also the duration and pressure associated with the touch or sliding operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 800 is in an operational mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 818. In some embodiments, audio component 810 further includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 816 includes one or more sensors for providing status assessment of various aspects of the apparatus 800. For example, the sensor assembly 816 may detect the on/off state of the device 800, the relative positioning of the components, such as the display and keypad of the device 800, the sensor assembly 816 may also detect the change in position of the device 800 or one component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and the change in temperature of the device 800. The sensor assembly 816 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 816 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 816 may also include an acceleration sensor, a gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 818 is configured to facilitate communication between apparatus 800 and other devices, either wired or wireless. The apparatus 800 may access a wireless network based on a communication standard, such as WiFi,3G,4G,5G,6G or a combination thereof. In one exemplary embodiment, communication component 818 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, communication component 818 further includes a Near Field Communication (NFC) module to facilitate short range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, ultra Wideband (UWB) technology, bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

In an exemplary embodiment, a non-transitory computer readable storage medium is also provided, such as memory 804 including instructions executable by processor 820 of apparatus 800 to perform the above-described method. For example, the non-transitory computer readable storage medium may be ROM, random Access Memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

As shown in fig. 9, fig. 9 is a schematic diagram of a communication device 900 according to an exemplary embodiment. The apparatus 900 may be provided as a network-side device in a second communication system. Referring to fig. 9, apparatus 900 includes a processing component 922, a wireless transmit/receive component 924, an antenna component 926, and a signal processing portion specific to a wireless interface, where processing component 922 may further include one or more processors.

One of the processors in processing component 922 may be configured to perform any of the communication methods described above on the network-side device side in the second communication system.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A communication method, wherein the method is applied to a first terminal, the method comprising:

2. The method of claim 1, wherein after adding the target DRB, the method further comprises:

3. The method of claim 1, wherein after adding the target DRB, the method further comprises:

4. The method according to claim 1, wherein the determining that the network side device in the second communication system is not configured with the target data radio bearer DRB corresponding to the IP multimedia system IMS service of the first terminal comprises:

5. The method of claim 1, wherein the MRU request message includes at least a session request message for requesting a target PDU session, the target PDU session being a PDU session corresponding to the IMS service.

6. The method of claim 1, wherein the receiving the configuration information sent by the network side device in the second communication system for configuring the target DRB comprises:

7. A communication method, wherein the method is applied to a network side device in a second communication system, the method comprising:

8. The method of claim 7, wherein the MRU request message includes at least a session request message for requesting a target PDU session, the target PDU session being a PDU session corresponding to the IMS service.

9. The method of claim 8, wherein prior to determining the configuration information, the method further comprises:

10. The method of claim 7, wherein the sending the configuration information to the first terminal comprises:

11. A communication device, the device being applied to a first terminal, the device comprising:

and the DRB adding module is used for adding the target DRB based on the configuration information, wherein the target DRB is used for communicating with IMS core network equipment under the second communication system of the first terminal.

12. A communication apparatus, the apparatus being applied to a network-side device in a second communication system, the apparatus comprising:

13. A computer readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the communication method of any of claims 1-6, or 7-10.

14. A communication device, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to execute the executable instructions to implement the steps of the communication method of any of claims 1-6, or 7-10.