CN114640958A

CN114640958A - IMS process processing method and related equipment

Info

Publication number: CN114640958A
Application number: CN202011488632.9A
Authority: CN
Inventors: 刘选兵; 杨晓东; 鲍炜; 黄黎
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2022-06-17

Abstract

The application discloses an IMS process processing method and related equipment, wherein the method comprises the following steps: executing a first operation when the called terminal has a mobility process; establishing an IMS service with a calling terminal based on a first operation; the first operation includes any one of: suspending an IMS signaling procedure in performing a mobility procedure; when receiving the first updating message, sending a first response message to indicate the latest state of the called terminal; in the process of executing mobility, when receiving a second updating message, sending a second response message to indicate the calling terminal to wait for updating or resend the second updating message; in the process of executing the mobility, when a third updating message is received, delaying to send a corresponding third response message; and under the condition that a fourth updating message is received after the ringing message is sent, ignoring the fourth updating message or sending a fourth response message to indicate the latest state of the called terminal. Therefore, reliability of IMS signaling transmission can be ensured, and IMS service interruption is avoided.

Description

IMS process processing method and related equipment

Technical Field

The present application belongs to the field of communications technologies, and in particular, to an IMS process processing method and related devices.

Background

With the development of communication technology, communication systems are more and more sophisticated. In the current communication System, during the process of establishing an internet protocol Multimedia Subsystem (IMS) service, if an Evolved Packet System (EPS) Fallback (Fallback) occurs, when a mobility process occurs, a terminal executes the mobility process, which may cause a high-level signaling not to be sent, resulting in an IMS service interruption. For example, when a New Radio (NR) performs a voice service, an EPS Fallback may be executed from the NR to an LTE network to perform an IMS voice call, and there is a problem that the voice call establishment fails in this process.

For a scenario that the NR is switched to Long Term Evolution (LTE) for a call, for example, in an IMS voice process in which a signaling plane is established between a calling terminal and a called terminal, the calling terminal may send an update query to the called terminal, and the called terminal may reply a 200OK (remote send/local none) message because the call is not switched to an LTE base station, that is, the called terminal is not ready. But the message may not be successfully sent due to the handover. After the handover is completed, the precondition (precondition) of the called terminal is satisfied, and the called terminal sends a 180ring message to the IMS to tell the IMS that the precondition has been satisfied. At this point the IMS may resend the last update message asking for the called terminal status. If the IMS still receives the last response message and thus determines that the precondition is not satisfied, it may cause a call setup failure.

Therefore, in the prior art, the terminal executes the mobility procedure, which causes the interruption of the IMS service.

Disclosure of Invention

The embodiment of the application provides an IMS (IP multimedia subsystem) process processing method and related equipment, which can solve the problem of IMS service interruption caused by a terminal executing a mobility process.

In a first aspect, an IMS procedure processing method is provided, including:

under the condition of the mobility process of the called terminal, the called terminal executes a first operation;

the called terminal establishes an IMS service with the calling terminal based on the first operation;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

when receiving a first updating message, sending a first response message, wherein the first response message is used for indicating the latest state of the called terminal;

in the process of executing the mobility, when a second update message is received, sending a second response message, where the second response message is used to indicate the calling terminal to wait for update or indicate the calling terminal to resend the second update message;

in the mobility executing process, when a third updating message is received, delaying to send a third response message corresponding to the third updating message;

and under the condition that a fourth updating message is received after the ringing message is sent, sending a fourth response message or ignoring the fourth updating message, wherein the fourth response message is used for indicating the latest state of the called terminal.

In a second aspect, an IMS procedure processing method is provided, including:

under the condition that the called terminal has a mobility process, the calling terminal executes a second operation;

the calling terminal establishes an IMS service with the called terminal based on the second operation;

wherein the second operation comprises any one of:

suspending an IMS signaling process in the mobility process executed by the called terminal;

receiving a first response message sent by a called terminal based on a first updating message, wherein the first response message is used for indicating the latest state of the called terminal;

receiving a second response message sent by the called terminal based on a second update message, wherein the second response message is used for indicating the calling terminal to wait for updating or indicating the calling terminal to resend the second update message;

receiving a third response message sent by the called terminal based on a third update message, wherein the third response message is a response message sent by the called terminal in a delayed manner when the called terminal receives the third update message in the mobility execution process;

receiving a fourth response message sent by the called terminal based on a fourth update message, where the fourth response message is a response message sent by the called terminal when the fourth update message is received after the called terminal sends a ringing message, and the fourth response message is used to indicate a latest state of the called terminal.

In a third aspect, an IMS process processing apparatus is provided, including:

the first execution module is used for executing a first operation by the called terminal under the condition that the called terminal has a mobility process;

the first control module is used for the called terminal to establish an IMS service with the calling terminal based on the first operation;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

in the process of executing the mobility, when a second updating message is received, sending a second response message, wherein the second response message is used for indicating the calling terminal to wait for updating or indicating the calling terminal to resend the second updating message;

In a fourth aspect, an IMS process processing apparatus is provided, including:

the second execution module is used for executing a second operation by the calling terminal under the condition that the called terminal generates a mobility process;

the second control module is used for the calling terminal to establish an IMS service with the called terminal based on the second operation;

wherein the second operation comprises any one of:

and receiving a fourth response message sent by the called terminal based on a fourth update message, wherein the fourth response message is a response message sent by the called terminal under the condition that the called terminal receives the fourth update message after sending a ringing message, and the fourth response message is used for indicating the latest state of the called terminal.

In a fifth aspect, there is provided a called terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the first aspect.

In a sixth aspect, there is provided a calling terminal, the network device comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method according to the second aspect.

In a seventh aspect, there is provided a readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, implement the steps of the method according to the first aspect or implement the steps of the method according to the second aspect.

In an eighth aspect, embodiments of the present application provide a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a program or instructions to implement the method according to the first aspect or the second aspect.

In a ninth aspect, there is provided a program product stored in a non-volatile storage medium, the program product being executable by at least one processor to perform the method of the first aspect or to perform the method of the second aspect.

In the embodiment of the application, the called terminal executes a first operation under the condition that the called terminal has a mobility process; the called terminal establishes an IMS service with the calling terminal based on the first operation; wherein the first operation comprises any one of: suspending an IMS signaling procedure in performing the mobility procedure; when receiving a first updating message, sending a first response message, wherein the first response message is used for indicating the latest state of the called terminal; in the process of executing the mobility, when a second update message is received, sending a second response message, where the second response message is used to indicate the calling terminal to wait for update or indicate the calling terminal to resend the second update message; in the mobility executing process, when a third updating message is received, delaying to send a third response message corresponding to the third updating message; and under the condition that a fourth updating message is received after the ringing message is sent, sending a fourth response message or ignoring the fourth updating message, wherein the fourth response message is used for indicating the latest state of the called terminal. Therefore, when the called terminal executes the mobility process, the reliability of IMS signaling transmission can be ensured, thereby avoiding IMS service interruption.

Drawings

Fig. 1 is a block diagram of a network system to which an embodiment of the present application is applicable;

fig. 2 is a schematic diagram of an EPS Fallback in an IMS process processing method according to an embodiment of the present application;

fig. 3 is a flowchart of an IMS procedure processing method according to an embodiment of the present application;

fig. 4 is a flowchart of another IMS procedure processing method according to an embodiment of the present application;

fig. 5 is a block diagram of an IMS process apparatus according to an embodiment of the present disclosure;

fig. 6 is a block diagram of another IMS process processing apparatus according to an embodiment of the present application;

fig. 7 is a block diagram of a communication device according to an embodiment of the present application;

fig. 8 is a structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of protection of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and claims means at least one of connected objects, and a character "/" generally means that the former and latter related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" are often used interchangeably in embodiments of the present application, and the described techniques may be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, but the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.

For ease of understanding, some of the contents of the embodiments of the present application are described below:

for EPS Fallback.

No Voice service is provided at the initial stage of NR, when a base station (gNB) of a fifth generation mobile communication technology (5G) establishes an IMS Voice channel on NR, handover is triggered, and at this time, the gNB initiates redirection to a 5G Core Network (5G Core Network, 5GC) or supports an inter-radio access technology (inter-RAT) handover request, falls back to an LTE Network, and is served by a Voice over Long-Term Evolution (VoLTE). Falling back to the LTE network may also be understood as falling back to the LTE network.

The fall back procedure is shown in fig. 2, specifically, the terminal resides in the 5G NR, and after initiating a voice call, both voice and data fall back to the 4G LTE. The voice channel often needs NR to be continuously optimized for the network to achieve the requirements of good speech quality and low power consumption of the UE. The technology operator can be selected to focus on developing data service in the initial stage of 5G NR, and then evolves to VoNR after NR network coverage and optimization.

The IMS process processing method provided in the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Referring to fig. 3, fig. 3 is a flowchart of an IMS procedure processing method provided in an embodiment of the present application, where the method is executed by a called terminal, and as shown in fig. 3, the method includes the following steps:

step 301, when a called terminal has a mobility process, the called terminal executes a first operation;

step 302, the called terminal establishes an IMS service with the calling terminal based on the first operation;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

In this embodiment, the first UPDATE message, the second UPDATE message, the third UPDATE message, and the fourth UPDATE message may be understood as UPDATE messages for establishing an IMS service, that is, UPDATE messages, where the UPDATE messages are used for the calling terminal to inquire a state of the called terminal, for example, whether a preset prerequisite condition (precondition) is satisfied. For example, in the IMS voice process in which the calling terminal and the called terminal establish the signaling plane, the calling terminal may send an update message to inquire the state of the called UE, and at this time, the called terminal may reply a corresponding response message, that is, a 200OK message. That is to say, the response messages sent by the called terminal based on the first update message, the second update message, the third update message and the fourth update message may all be understood as 200OK messages, and of course, other types of response messages may also be used, for example, response messages newly added in the existing IMS voice process, which is not further limited herein.

It should be understood that, in the embodiment of the present application, the first update message, the second update message, the third update message, and the fourth update message, and the corresponding response message all belong to an IMS signaling message.

It is required that the mobility procedure may include a handover procedure and a redirection procedure, where the cause of the handover procedure and the redirection procedure may be EPS Fallback, or may be other causes, such as network quality. In the embodiment of the present application, taking EPS Fallback as an example, it can be understood that the handover process and the redirection process are included in an EPS Fallback process of an evolved packet system.

Suspending an IMS signaling procedure for a first operation in performing the mobility procedure; at this time, when the IMS signaling is received, the response signaling corresponding to the IMS signaling is not sent, for example, after the update message is received, the update message is directly suspended, so that after the IMS signaling is recovered, the IMS signaling process may be continuously performed, for example, the response message corresponding to the update message is sent. In this way, it is avoided that IMS signalling is dropped during the execution of the mobility procedure, thereby causing a disruption of IMS traffic.

Aiming at the first operation, when the first updating message is received, the first response message is sent, and each time the first updating message is received, the latest state of the called terminal is based, so that the called terminal can feed back the latest state information based on the received first response message after the called terminal completes switching or redirection, and the called terminal and the calling terminal can be ensured to successfully establish the IMS service. Compared with the prior art that only the same state information of the terminal is fed back in a one-time updating process, the reliability of IMS service establishment can be ensured in a mobility process, and IMS service interruption is avoided.

In the mobility execution process for the first operation, when receiving the second update message, the second response message is sent, so that the calling device may wait for the called terminal to resend the updated response message, or the calling terminal may wait for a certain time to resend the second update message, so that the normal state information may be fed back to the calling terminal after the called terminal completes the handover or redirection, thereby ensuring that the called terminal and the calling terminal can successfully establish the IMS service.

For a first operation, in the process of executing the mobility, when a third updating message is received, delaying to send a third response message corresponding to the third updating message; the delayed time can be agreed by a protocol or indicated by the called equipment, so that an IMS signaling terminal caused by executing a mobility process can be avoided, and the reliability of IMS service establishment is improved.

It should be understood that, in the IMS service call flow, the calling terminal may send an update message to the called terminal, and if the called terminal does not satisfy the precondition, a response message that the precondition is not satisfied will be sent to the calling terminal. If the response message of which the precondition is not satisfied is not sent out due to the switching or redirection of the EPS Fallback execution process of the called terminal, and the precondition of the called terminal is satisfied, a ringing message is sent out; at this time, since the calling terminal does not receive the response message whose precondition is not satisfied before, the calling terminal will resend the update message to inquire the state of the called terminal again, and since the current mechanism will make the called terminal reply the result of the last update message, send the corresponding response message to inform the calling terminal that the precondition is not satisfied, so that the calling terminal may misjudge that the precondition of the called is not satisfied, resulting in the interruption of the IMS service. Therefore, in the embodiment of the present application, when a fourth update message is received after sending the ringing message, the fourth response message is sent or the fourth update message is ignored, so that the calling terminal can terminate the session of the first update message based on the ringing message, thereby avoiding that the IMS service is interrupted because the non-updated state information is received again after receiving the ringing message. The ringing message may be understood as 183 ringing.

Optionally, in some embodiments, in case of suspending the IMS signaling procedure, the first operation further comprises:

in case of receiving a target IMS message, sending a fifth response message indicating at least one of: resources are being prepared, EPS Fallback and IMS signalling pending.

In the embodiment of the application, after the called terminal suspends the IMS signaling, if the called device receives the IMS message, the called device may notify the current state of the calling terminal itself, so that the calling terminal performs a response operation based on the current state of the called terminal. For example, the calling terminal may perform an IMS signaling suspension procedure based on the fifth response message, which may avoid additional signaling overhead. Optionally, after the IMS is suspended, the IMS may be resumed after a preset time period, or the called terminal may instruct the calling terminal to resume the IMS signaling.

It should be understood that the called terminal may send the fifth Response message after receiving a Provisional Response ACKnowledgement (PRACK) message, a fifth update message, or an Invite (Invite) message, that is, the target IMS message includes any one of the following: the provisional response acknowledges the PRACK message, the fifth update message and the invite message.

Optionally, in some embodiments, in a case that the target IMS message includes the fifth update message, the first operation further includes:

when the called terminal meets a first preset condition, sending a response message corresponding to the fifth update message, where the response message corresponding to the fifth update message is used to indicate at least one of the following:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

In this embodiment of the application, the first preset condition may be understood as the precondition, and after the called terminal meets the precondition, the called terminal sends a response message corresponding to the fifth update message again based on the fifth update message sent last time to indicate at least one of completion of EPS Fallback, completion of resource preparation, and continuation of IMS signaling, so that the calling terminal and the called terminal may continue to complete the IMS service establishment process based on the response message corresponding to the fifth update message, and thus, the IMS service is prevented from being interrupted.

It should be understood that the response message corresponding to the fifth update message corresponds to the fifth response message, for example, when the fifth response message indicates that the resource is being prepared, the response message corresponding to the fifth update message indicates that the resource preparation is completed; or when the fifth response message indicates an EPS Fallback, the response message corresponding to the fifth update message indicates that the EPS Fallback is completed; or when the fifth response message indicates that the IMS signaling is suspended, the response message corresponding to the fifth update message indicates that the IMS signaling continues.

Optionally, in some embodiments, the first response message satisfies at least one of:

under the condition that the first updating message is received when the called terminal does not meet a first preset condition, the first response message is used for indicating that the called terminal does not meet the first preset condition;

and under the condition that the called terminal receives the first updating message when meeting a first preset condition, the first response message is used for indicating that the called terminal meets the first preset condition, and the first preset condition is a condition that the called terminal can carry out conversation.

In other words, in this embodiment of the present application, if the called terminal receives the Update, which may be the Update retransmitted by the calling terminal or a new Update, the called terminal may provide an answer to Update Status in the response message. For example, if the Update is received when the Precondition is not satisfied, the called terminal replies to the 200OK normally, and the 200OK indicates that the first preset condition is not satisfied. If the Precondition is satisfied, for example, after the LTE is switched to and the dedicated EPS bearer (Bearers) is established, the called terminal receives the Update of the calling terminal, and the called terminal may send a 200OK according to the latest status, where the 200OK indicates that the first preset condition is satisfied.

In this embodiment of the present application, that the first preset condition is met may be understood as that the dedicated EPS bearer is established. In other words, the first preset condition includes that dedicated EPS bearer establishment is completed.

Optionally, in some embodiments, the first operation includes, in a case where a first response message is sent when a first update message is received, the first operation further includes: and prohibiting retransmission of a response message different from the current state of the called terminal in the process of executing the mobility.

In the embodiment of the present application, taking an EPS Fallback as an example, during the EPS Fallback, the called terminal instructs the IMS to prohibit a response before direct retransmission. For example, the called terminal receives the IMS message 1, and the called terminal sends a response message 1; subsequently, the called terminal receives the retransmitted IMS message 1, the called terminal or the IMS prohibits retransmission of the response message 1 during the EPS Fallback, and the called terminal transmits a new response message 2, that is, the response message 2 at this time is a response message determined according to the current state of the called terminal. In the embodiment of the application, the first response message is sent based on the latest state of the called terminal during the EPS Fallback period, so that the phenomenon that the IMS service is interrupted because the terminal executes the EPS Fallback process and feeds back the error response message which does not meet the first preset condition all the time can be avoided.

Optionally, in some embodiments, in a case that the second response message is used to indicate that the calling terminal waits for updating, the first operation further includes:

and sending a response message for indicating that the called terminal meets a first preset condition under the condition that the called terminal meets the first preset condition.

In the embodiment of the application, under the condition that the called terminal indicates the calling terminal to wait for updating, the calling terminal can wait for the called terminal to send the updated response message, and does not repeatedly send the updated response message for inquiry. The called terminal may transmit an update transmission 200OK to indicate that the called terminal satisfies the first preset condition, in case that the first preset condition is satisfied. For example, the 200OK is sent after the called terminal switches and establishes the dedicated EPS beacons. Therefore, the extra signaling overhead caused by multiple queries of the calling terminal can be avoided, and the interruption of the IMS service caused by excessive update message sending times can be avoided.

Optionally, in some embodiments, in a case that the second response message is used to instruct the calling terminal to resend the second update message, the second response message is further used to instruct a target time, and the target time is used to determine a time for the calling terminal to resend the second update message.

In the embodiment of the application, the called terminal can directly indicate the calling terminal to resend the second updating message after the interval of the preset duration, so that the situation that the calling terminal repeatedly sends the updating message for many times to cause extra signaling overhead can be avoided, and meanwhile, the situation that the IMS service is interrupted due to the fact that the sending times of the updating message are too many can be avoided. Of course, in other embodiments, the target time may be agreed upon by the protocol.

Optionally, in some embodiments, the delaying sending of the third response message corresponding to the third update message includes:

and sending a third response message corresponding to the third updating message under the condition that the called terminal meets a first preset condition.

It should be noted that, in the waiting process, if the called terminal receives the update message retransmitted by the calling terminal, the called terminal may ignore the retransmitted update message at this time, so as to avoid an additional signaling overhead, that is, in this embodiment of the present application, before sending the third response message corresponding to the third update message, when waiting for the called terminal to satisfy the first preset condition, the method further includes:

and under the condition that the called terminal does not meet the first preset condition, ignoring the retransmitted third updating message.

In this embodiment, the first preset condition may be switching completion, redirection completion, or Precondition. For example, in the EPS Fallback procedure, the called terminal does not send a response message corresponding to the update until a first preset condition is met, and sends a corresponding response message after the first preset condition is met. Optionally, the called terminal ignores the retransmitted update message.

Optionally, in some embodiments, in a case that the called terminal performs a mobility procedure, the called terminal performs a first operation including:

under the condition that the called terminal has a mobility process, the bottom layer of the called terminal sends first indication information to the high layer of the called terminal;

and the high layer of the called terminal executes the first operation according to the first indication information.

In this embodiment of the present application, after the UE initiates a mobility procedure, if the UE receives an RRC reconfiguration message, the RRC reconfiguration message optionally indicates a voice fallback (voiceFallback). The RRC of the terminal may indicate that a mobility procedure, EPS Fallback, or voiceFallback occurs at a higher layer. The higher layer of the called terminal may perform the above-described first operation based on the indication.

Referring to fig. 4, fig. 4 is a flowchart of another IMS procedure processing method provided in this embodiment, where the method is executed by a calling terminal, and as shown in fig. 4, the method includes the following steps:

step 401, the calling terminal executes a second operation when the called terminal has a mobility process;

step 402, the calling terminal establishes an IMS service with the called terminal based on the second operation;

wherein the second operation comprises any one of:

Optionally, the mobility procedure includes a handover procedure and a redirection procedure, and the handover procedure and the redirection procedure are included in an EPS Fallback procedure.

Optionally, in a case that the second operation includes suspending an IMS signaling procedure, the second operation further includes at least one of:

the calling terminal suspends sending the updating message within a first preset time period;

under the condition of receiving a fifth response message sent by the called terminal based on the target IMS message, the calling terminal waits for the called terminal to send a response message for updating the fifth response message;

wherein the fifth response message is to indicate at least one of: resources are being prepared, EPS Fallback and IMS signalling pending.

Optionally, the target IMS message includes any one of: the provisional response acknowledges the PRACK message, the fifth update message and the invite message.

Optionally, in a case that the target IMS message includes the fifth update message, a response message corresponding to the fifth update message is used to update the fifth response message, and the response message corresponding to the fifth update message is used to indicate at least one of the following:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

Optionally, in a case that the second operation includes receiving a second response message sent by the called terminal based on the second update message, the second operation further includes any one of:

the calling terminal resends the second updating message at intervals of a second preset time period;

and the calling terminal waits for the called terminal to send a response message corresponding to the second updating message.

Optionally, in a case that the second operation includes receiving a fourth response message sent by the called terminal based on a fourth update message, the second operation further includes:

and stopping the updating process under the condition of receiving the ringing message.

It should be noted that, this embodiment is used as an implementation of the calling terminal corresponding to the embodiment shown in fig. 3, and specific implementation thereof may refer to relevant descriptions of the embodiment shown in fig. 3 and achieve the same beneficial effects, and details are not described here again to avoid repeated descriptions.

It should be noted that, in the IMS process processing method provided in the embodiment of the present application, the execution subject may be an IMS process processing apparatus, or a control module in the IMS process processing apparatus for executing the IMS process processing method. In the embodiment of the present application, an IMS process processing apparatus executes an IMS process processing method as an example, and the IMS process processing apparatus provided in the embodiment of the present application is described.

Referring to fig. 5, fig. 5 is a structural diagram of an IMS process processing apparatus according to an embodiment of the present application, and as shown in fig. 5, an IMS process processing apparatus 500 includes:

a first executing module 501, configured to, when a mobility process occurs in a called terminal, execute a first operation by the called terminal;

a first control module 502, configured to establish an IMS service with a calling terminal based on the first operation by the called terminal;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

in the process of executing the mobility, when a third updating message is received, delaying to send a third response message corresponding to the third updating message;

Optionally, in case of suspending the IMS signaling procedure, the first operation further comprises:

Optionally, in a case that the target IMS message includes the fifth update message, the first operation further includes:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

Optionally, the first response message satisfies at least one of:

Optionally, the first preset condition includes that dedicated EPS bearer establishment is completed.

Optionally, the first operation includes, in a case where a first response message is sent when a first update message is received, the first operation further includes: and prohibiting retransmission of a response message different from the current state of the called terminal in the process of executing the mobility.

Optionally, in a case that the second response message is used to indicate that the calling terminal waits for updating, the first operation further includes:

Optionally, in a case that the second response message is used to instruct the calling terminal to resend the second update message, the second response message is further used to instruct a target time, and the target time is used to determine a time for the calling terminal to resend the second update message.

Optionally, the delaying sending of the third response message corresponding to the third update message includes:

Optionally, the first executing module 501 is further configured to: and under the condition that the called terminal meets the condition that the first preset condition is not met, ignoring the retransmitted third updating message.

Optionally, in a case that the called terminal has a mobility procedure, the first executing module 501 is specifically configured to: under the condition that the called terminal has a mobility process, the bottom layer of the called terminal sends first indication information to the high layer of the called terminal; and the high layer of the called terminal executes the first operation according to the first indication information.

Optionally, the first indication information is used to indicate a mobility procedure, an EPS Fallback, or a voice Fallback.

The called terminal provided in the embodiment of the present application can implement each process in the method embodiment of fig. 3, and is not described here again to avoid repetition.

Referring to fig. 6, fig. 6 is a structural diagram of an IMS process processing apparatus according to an embodiment of the present application, and as shown in fig. 6, the IMS process processing apparatus 600 includes:

a second executing module 601, configured to execute a second operation by the calling terminal when the called terminal has a mobility procedure;

a second control module 602, configured to establish, by the calling terminal, an IMS service with a called terminal based on the second operation;

wherein the second operation comprises any one of:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

The calling terminal provided in the embodiment of the present application can implement each process in the method embodiment of fig. 4, and is not described here again to avoid repetition.

The IMS process processing apparatus in the embodiment of the present application may be an apparatus, or may be a component, an integrated circuit, or a chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the type of the terminal 11 listed above, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a television (television), a teller machine (TV), a self-service machine (kiosk), or the like, and the embodiments of the present application are not limited in particular.

The IMS process processing apparatus in the embodiment of the present application may be an apparatus having an operating system. The operating system may be an Android (Android) operating system, an ios operating system, or other possible operating systems, and embodiments of the present application are not limited specifically.

The IMS process processing apparatus provided in the embodiment of the present application can implement each process implemented in the method embodiments of fig. 3 to fig. 4, and achieve the same technical effect, and is not described here again to avoid repetition.

Optionally, as shown in fig. 7, an embodiment of the present application further provides a communication device 700, which includes a processor 701, a memory 702, and a program or an instruction stored in the memory 702 and executable on the processor 701, where the program or the instruction is executed by the processor 701 to implement each process of the mobility process processing method embodiment, and can achieve the same technical effect, and no further description is provided here to avoid repetition.

Fig. 8 is a schematic hardware structure diagram of a terminal implementing various embodiments of the present application.

The terminal 800 includes but is not limited to: a radio frequency unit 801, a network module 802, an audio output unit 803, an input unit 804, a sensor 805, a display unit 806, a user input unit 807, an interface unit 808, a memory 809, and a processor 810.

Those skilled in the art will appreciate that the terminal 800 may further include a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 810 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal structure shown in fig. 8 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that in the embodiment of the present application, the input Unit 804 may include a Graphics Processing Unit (GPU) 8041 and a microphone 8042, and the Graphics Processing Unit 8041 processes image data of a still picture or a video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 806 may include a display panel 8061, and the display panel 8061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 807 includes a touch panel 8071 and other input devices 8072. A touch panel 8071, also referred to as a touch screen. The touch panel 8071 may include two portions of a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In the embodiment of the present application, the radio frequency unit 801 receives downlink data from a network side device, and then processes the downlink data to the processor 810; in addition, the uplink data is sent to the network device. In general, radio frequency unit 801 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 809 may be used to store software programs or instructions and various data. The memory 109 may mainly include a storage program or instruction area and a storage data area, wherein the storage program or instruction area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. In addition, the Memory 809 can include a high-speed random access Memory, and can also include a nonvolatile Memory, wherein the nonvolatile Memory can be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 810 may include one or more processing units; alternatively, the processor 810 may integrate an application processor, which primarily handles operating systems, user interfaces, and applications or instructions, etc., and a modem processor, which primarily handles wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 810.

When the terminal is a called terminal, the radio frequency unit 801 is used for executing a first operation by the called terminal when the called terminal has a mobility process;

a radio frequency unit 801, further configured to establish, by the called terminal, an IMS service with the calling terminal based on the first operation;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

Or, when the terminal is a calling terminal, the radio frequency unit 801 is configured to, in a case that a mobility process occurs in a called terminal, execute a second operation by the calling terminal;

a radio frequency unit 801, further configured to establish, by the calling terminal, an IMS service with a called terminal based on the second operation;

wherein the second operation comprises any one of:

It should be understood that, in this embodiment, the processor 810 and the radio frequency unit 801 may implement each process implemented by the terminal in the method embodiment of fig. 2 or fig. 3, and are not described herein again to avoid repetition.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the IMS process processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the electronic device described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a network device program or an instruction, to implement each process of the IMS process processing method embodiment, and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as system-on-chip, system-on-chip or system-on-chip, etc.

The embodiment of the present application further provides a program product, where the program product is stored in a non-volatile storage medium, and the program product is executed by at least one processor to implement each process of the IMS process processing method embodiment, and the same technical effect can be achieved, and details are not described here to avoid repetition.

It should be noted that, in this document, 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatuses in the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions recited, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application or portions thereof that contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a base station) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An internet protocol multimedia subsystem (IMS) process handling method, comprising:

the method comprises the steps that under the condition that a called terminal has a mobility process, the called terminal executes a first operation;

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

when a first updating message is received, sending a first response message, wherein the first response message is used for indicating the latest state of the called terminal;

2. The method of claim 1, wherein the mobility procedure comprises a handover procedure and a redirection procedure, and wherein the handover procedure and the redirection procedure are included in an evolved packet system Fallback (EPS Fallback) procedure.

3. The method of claim 1, wherein in case the IMS signaling procedure is suspended, the first operation further comprises:

4. The method of claim 3, wherein the target IMS message comprises any of: the provisional response acknowledges the PRACK message, the fifth update message and the invite message.

5. The method of claim 4, wherein in the case that the target IMS message comprises the fifth update message, the first operation further comprises:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

6. The method of claim 1, wherein the first response message satisfies at least one of:

7. The method of claim 6, wherein the first preset condition comprises that dedicated EPS bearer establishment is completed.

8. The method of claim 1, wherein the first operation comprises, in the case that a first response message is sent when a first update message is received, further comprising: and prohibiting retransmitting the response message different from the current state of the called terminal in the process of executing the mobility.

9. The method of claim 1, wherein in the case that the second response message is used to indicate that the calling terminal is waiting for updating, the first operation further comprises:

10. The method according to claim 1, wherein in case that the second response message is used to instruct the calling terminal to resend the second update message, the second response message is further used to instruct a target time, and the target time is used to determine the time for the calling terminal to resend the second update message.

11. The method of claim 1, wherein delaying the sending of the third response message corresponding to the third update message comprises:

12. The method according to claim 11, wherein before waiting for the called terminal to satisfy the first preset condition and sending the third response message corresponding to the third update message, the method further comprises:

13. The method of claim 1, wherein in case of a mobility procedure of the called terminal, the called terminal performs the first operation comprising:

14. The method of claim 13, wherein the first indication information is used for indicating a mobility procedure, an EPS Fallback, or a voice Fallback.

15. An internet protocol multimedia subsystem (IMS) process handling method, comprising:

wherein the second operation comprises any one of:

16. The method of claim 15, wherein the mobility procedure comprises a handover procedure and a redirection procedure, and wherein the handover procedure and the redirection procedure are included in an evolved packet system Fallback (EPS Fallback) procedure.

17. The method of claim 15, wherein in the case that the second operation comprises suspending an IMS signaling procedure, the second operation further comprises at least one of:

the calling terminal suspends sending the update message within a first preset time period;

under the condition that a fifth response message sent by the called terminal based on the target IMS message is received, the calling terminal waits for the called terminal to send a response message for updating the fifth response message;

18. The method of claim 17, wherein the target IMS message comprises any one of: the provisional response acknowledges the PRACK message, the fifth update message and the invite message.

19. The method of claim 18, wherein in a case that the target IMS message includes the fifth update message, a response message corresponding to the fifth update message is used for updating the fifth response message, and the response message corresponding to the fifth update message is used for indicating at least one of:

EPS Fallback is completed;

completing resource preparation;

IMS signaling continues.

20. The method according to claim 15, wherein in case that the second operation includes receiving a second response message sent by the called terminal based on a second update message, the second operation further includes any one of:

21. The method according to claim 15, wherein in case that the second operation includes receiving a fourth response message sent by the called terminal based on a fourth update message, the second operation further includes:

22. An internet protocol multimedia subsystem, IMS, process apparatus, comprising:

wherein the first operation comprises any one of:

suspending an IMS signaling procedure in performing the mobility procedure;

23. The apparatus of claim 22, wherein in case the IMS signaling procedure is suspended, the first operation further comprises:

24. The apparatus of claim 22, wherein the first response message satisfies at least one of:

25. An internet protocol multimedia subsystem, IMS, process apparatus, comprising:

the second execution module is used for executing a second operation by the calling terminal under the condition that the called terminal has a mobility process;

wherein the second operation comprises any one of:

26. The apparatus of claim 25, wherein in the case that the second operation comprises suspending an IMS signaling procedure, the second operation further comprises at least one of:

27. A called terminal, comprising: a memory, a processor and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the IMS process handling method of any of claims 1 to 14.

28. A calling terminal, comprising: a memory, a processor and a program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the IMS process handling method of any of claims 15 to 21.

29. A readable storage medium, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the IMS procedure processing method according to any one of claims 1 to 21.