CN107124428B

CN107124428B - Method, equipment and storage medium for improving VoLTE call success rate

Info

Publication number: CN107124428B
Application number: CN201710400456.0A
Authority: CN
Inventors: 张庆治
Original assignee: Nubia Technology Co Ltd
Current assignee: Nubia Technology Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2020-12-04
Anticipated expiration: 2037-05-31
Also published as: CN107124428A

Abstract

The invention discloses a method, equipment and a storage medium for improving the success rate of VoLTE calling. The method comprises the following steps: when the mobile terminal resides in a Long Term Evolution (LTE) network, receiving a voice call of a Circuit Switching (CS) domain of a network side; and executing Circuit Switched Fallback (CSFB) processing, establishing voice call in a network capable of processing the voice call of the CS domain, and sending a message of canceling the VoLTE service to a network side after the voice call is finished. After the CSFB call is finished, the method sends the logout VoLTE to the network side under the condition of no voice service, can effectively ensure the success rate of the logout, enables the VoLTE registration states of the terminal and the network side to be uniform, effectively avoids the condition of call failure caused by non-uniform states during the period of the terminal registering the VoLTE, and improves the success rate of the call.

Description

Method, equipment and storage medium for improving VoLTE call success rate

Technical Field

The present invention relates to the field of network communications, and in particular, to a method, device, and storage medium for improving a success rate of a VoLTE call.

Background

The Voice over LTE (Voice long term evolution) is an end-to-end Voice solution under the condition of all internet protocols on a 4G network, and is a final solution of Voice in the LTE era. For operators, deploying VoLTE not only improves the utilization rate of wireless spectrum and reduces network cost, but also introduces services such as high-definition video telephony and high-definition voice, and the like, and obviously improves communication quality.

Voice traffic in 4G networks is carried out over a PS (Packet Switch) based domain. However, in an actual network, due to coverage and capacity, the following phenomena sometimes occur: the mobile terminal resides on the 4G network and when VoLTE registration is successful, but the network indicates that the incoming call needs to be answered from the CS (Circuit Switch) domain; at this time, the mobile terminal returns to the CS domain for communication by executing a CSFB (CS FallBack) flow; after the voice call is finished, the mobile terminal can re-camp on the LTE and re-register the VoLTE.

However, when the mobile terminal returns to 4G after the CSFB call is ended and before the VoLTE is not successfully registered again, if there is call access, the network side may perform paging in a VoLTE manner, and the VoLTE on the terminal side is in a logged-off state, and when the states of the network side and the terminal side are not consistent, a call failure may be caused, which may cause a situation that the user misses the call, and affect the user experience.

Disclosure of Invention

The invention mainly aims to provide a method, equipment and a storage medium for improving the success rate of VoLTE calling, and aims to solve the problem of VoLTE calling failure caused by inconsistent states at a network side and a terminal side.

In order to achieve the purpose, the invention adopts the following technical scheme:

according to an aspect of the present invention, a method for improving a success rate of a voice long term evolution VoLTE call is provided, which includes:

when the mobile terminal resides in a Long Term Evolution (LTE) network, receiving a voice call of a Circuit Switching (CS) domain of a network side;

and executing Circuit Switched Fallback (CSFB) processing, establishing voice call in a network capable of processing CS domain voice call, and sending a message of canceling the VoLTE service to the network side after the voice call is finished.

Optionally, the sending, to the network side, a message to cancel the VoLTE service after the voice call is ended includes:

after the voice call is finished, inquiring whether a data service link exists in the network capable of processing the CS domain voice call;

and when the data service link exists, sending a message for canceling the VoLTE service to the network side based on the data service link.

Optionally, the method further includes:

and when the data service link does not exist, reactivating one data service link, and sending the message of canceling the VoLTE service to the network side based on the data service link.

Optionally, when the voice call is established in the network capable of processing the CS domain voice call, the method further includes:

sending a message for canceling the VoLTE service to the network side;

after the voice call is finished, sending a message for canceling the VoLTE service to the network side, including:

sending a message for inquiring the VoLTE service state to the network side through the data service link;

and when a registered message sent by a network side is received, sending a message of canceling the VoLTE service to the network side after the voice call is finished.

Optionally, the method further includes:

when a logout message sent by a network side is received, after the voice call is finished, a message for logging out the VoLTE service is not sent to the network side any more;

according to another aspect of the present invention, there is provided a mobile terminal comprising a memory and a processor; wherein the memory has stored thereon a program for improving a success rate of a voice long term evolution VoLTE call, which when executed by the processor, is configured to perform the steps of:

Optionally, the program when executed by the processor is configured to implement the steps of:

Optionally, when executed by the processor, the program is further configured to implement the following steps:

when a voice call is established in a network capable of processing a CS domain voice call, sending a message of canceling a VoLTE service to a network side;

after the voice call is finished, sending a message for inquiring the VoLTE service state to the network side through the data service link;

According to still another aspect of the present invention, there is provided a computer readable storage medium, on which a program for improving a success rate of a voice long term evolution VoLTE call is stored, wherein the program for improving the success rate of the voice long term evolution VoLTE call, when executed by a processor, implements the steps in the method for improving the success rate of the voice long term evolution VoLTE call.

The technical effects of the scheme provided by the invention can be realized as follows:

the method, the equipment and the storage medium for improving the success rate of the VoLTE call execute the CSFB process after receiving the voice call of the circuit switching CS domain of the network side when the mobile terminal resides in the LTE network, establish the voice call in the network capable of processing the CS domain voice call, and send the message for canceling the VoLTE service to the network side after the voice call is finished. Therefore, after the CSFB call is finished, the logout VoLTE is sent to the network side under the condition that no voice service exists, the success rate of logout can be effectively ensured, the VoLTE registration states of the terminal and the network side are unified, the condition that the call fails due to the fact that the states are not unified during the period that the terminal registers the VoLTE is effectively avoided, and the success rate of the call is improved.

Drawings

Fig. 1 is a schematic diagram of a hardware structure of a mobile terminal implementing various embodiments of the present invention;

FIG. 2 is a diagram of a wireless communication system for the mobile terminal shown in FIG. 1;

fig. 3 is a flowchart of a method for improving a success rate of a VoLTE call according to a first embodiment of the present invention;

fig. 4 is a flowchart of a method for improving a success rate of a VoLTE call according to a second embodiment of the present invention;

fig. 5 is a flowchart of a method for improving a success rate of a VoLTE call according to a third embodiment of the present invention.

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.

The terminal may be implemented in various forms. For example, the terminal described in the present invention may include a mobile terminal such as a mobile phone, a tablet computer, a notebook computer, a palmtop computer, a Personal Digital Assistant (PDA), a Portable Media Player (PMP), a navigation device, a wearable device, a smart band, a pedometer, and the like, and a fixed terminal such as a Digital TV, a desktop computer, and the like.

The following description will be given by way of example of a mobile terminal, and it will be understood by those skilled in the art that the construction according to the embodiment of the present invention can be applied to a fixed type terminal, in addition to elements particularly used for mobile purposes.

Referring to fig. 1, which is a schematic diagram of a hardware structure of a mobile terminal for implementing various embodiments of the present invention, the mobile terminal 100 may include: RF (Radio Frequency) unit 101, WiFi module 102, audio output unit 103, a/V (audio/video) input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. Those skilled in the art will appreciate that the mobile terminal architecture shown in fig. 1 is not intended to be limiting of mobile terminals, which may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The following describes each component of the mobile terminal in detail with reference to fig. 1:

the radio frequency unit 101 may be configured to receive and transmit signals during information transmission and reception or during a call, and specifically, receive downlink information of a base station and then process the downlink information to the processor 110; in addition, the uplink data is transmitted to the base station. Typically, radio frequency unit 101 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. In addition, the radio frequency unit 101 can also communicate with a network and other devices through wireless communication. The wireless communication may use any communication standard or protocol, including but not limited to GSM (Global System for Mobile communications), GPRS (General Packet Radio Service), CDMA2000(Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division duplex Long Term Evolution), and TDD-LTE (Time Division duplex Long Term Evolution).

WiFi belongs to short-distance wireless transmission technology, and the mobile terminal can help a user to receive and send e-mails, browse webpages, access streaming media and the like through the WiFi module 102, and provides wireless broadband internet access for the user. Although fig. 1 shows the WiFi module 102, it is understood that it does not belong to the essential constitution of the mobile terminal, and may be omitted entirely as needed within the scope not changing the essence of the invention.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output as sound when the mobile terminal 100 is in a call signal reception mode, a call mode, a recording mode, a voice recognition mode, a broadcast reception mode, or the like. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the mobile terminal 100 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, and the like.

The a/V input unit 104 is used to receive audio or video signals. The a/V input Unit 104 may include a Graphics Processing Unit (GPU) 1041 and a microphone 1042, the Graphics processor 1041 Processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphic processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 may receive sounds (audio data) via the microphone 1042 in a phone call mode, a recording mode, a voice recognition mode, or the like, and may be capable of processing such sounds into audio data. The processed audio (voice) data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 101 in case of a phone call mode. The microphone 1042 may implement various types of noise cancellation (or suppression) algorithms to cancel (or suppress) noise or interference generated in the course of receiving and transmitting audio signals.

The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 1061 and/or a backlight when the mobile terminal 100 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally, three axes), can detect the magnitude and direction of gravity when stationary, and can be used for applications of recognizing the posture of a mobile phone (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer and tapping), and the like; as for other sensors such as a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, and an infrared sensor, which can be configured on the mobile phone, further description is omitted here.

The display unit 106 is used to display information input by a user or information provided to the user. The Display unit 106 may include a Display panel 1061, and the Display panel 1061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile terminal. Specifically, the user input unit 107 may include a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect a touch operation performed by a user on or near the touch panel 1071 (e.g., an operation performed by the user on or near the touch panel 1071 using a finger, a stylus, or any other suitable object or accessory), and drive a corresponding connection device according to a predetermined program. The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 110, and can receive and execute commands sent by the processor 110. In addition, the touch panel 1071 may be implemented in various types, such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may include other input devices 1072. In particular, other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like, and are not limited to these specific examples.

Further, the touch panel 1071 may cover the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch panel 1071 transmits the touch operation to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event. Although the touch panel 1071 and the display panel 1061 are shown in fig. 1 as two separate components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 may be integrated to implement the input and output functions of the mobile terminal, and is not limited herein.

The interface unit 108 serves as an interface through which at least one external device is connected to the mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and external devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 109 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.

The processor 110 is a control center of the mobile terminal, connects various parts of the entire mobile terminal using various interfaces and lines, and performs various functions of the mobile terminal and processes data by operating or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the mobile terminal. Processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The mobile terminal 100 may further include a power supply 111 (e.g., a battery) for supplying power to various components, and preferably, the power supply 111 may be logically connected to the processor 110 via a power management system, so as to manage charging, discharging, and power consumption management functions via the power management system.

Although not shown in fig. 1, the mobile terminal 100 may further include a bluetooth module or the like, which is not described in detail herein.

In order to realize the technical scheme of the invention, the mobile terminal can obtain webpage loading configuration from the server through the radio frequency unit 101, the wifi module and other modules which can enable the mobile terminal to communicate with the server; the netpage recorded configuration local to the mobile terminal may be stored in memory 109. After obtaining the web page loading configuration, the processor 110 may update the local web page loading configuration stored in the memory 109 by using the obtained web page loading configuration, and load the web page by using the updated web page loading configuration; if the mobile terminal does not successfully obtain the webpage loading configuration from the server, the processor 110 loads the webpage with the local webpage loading configuration.

In order to facilitate understanding of the embodiments of the present invention, a communication network system on which the mobile terminal of the present invention is based is described below.

Referring to fig. 2, fig. 2 is an architecture diagram of a communication Network system according to an embodiment of the present invention, where the communication Network system is an LTE system of a universal mobile telecommunications technology, and the LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and an IP service 204 of an operator, which are in communication connection in sequence.

Specifically, the UE201 may be the terminal 100 described above, and is not described herein again.

The E-UTRAN202 includes eNodeB2021 and other eNodeBs 2022, among others. Among them, the eNodeB2021 may be connected with other eNodeB2022 through backhaul (e.g., X2 interface), the eNodeB2021 is connected to the EPC203, and the eNodeB2021 may provide the UE201 access to the EPC 203.

The EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving gateway) 2034, a PGW (PDN gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, and the like. The MME2031 is a control node that handles signaling between the UE201 and the EPC203, and provides bearer and connection management. HSS2032 is used to provide registers to manage functions such as home location register (not shown) and holds subscriber specific information about service characteristics, data rates, etc. All user data may be sent through SGW2034, PGW2035 may provide IP address assignment for UE201 and other functions, and PCRF2036 is a policy and charging control policy decision point for traffic data flow and IP bearer resources, which selects and provides available policy and charging control decisions for a policy and charging enforcement function (not shown).

The IP services 204 may include the internet, intranets, IMS (IP Multimedia Subsystem), or other IP services, among others.

Although the LTE system is described as an example, it should be understood by those skilled in the art that the present invention is not limited to the LTE system, but may also be applied to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, and future new network systems.

In implementing the technical solution of the present invention, the mobile terminal (UE shown in fig. 2) 201 may obtain the web page loading configuration from the eNode B, and the web page loading configuration may be generated and updated by various network devices.

Based on the above mobile terminal hardware structure and communication network system, the present invention provides various embodiments of the method.

Example 1

An embodiment of the present invention provides a method for improving a success rate of a VoLTE call, and as shown in fig. 3, the method specifically includes the following steps:

step S301, when the mobile terminal resides in the LTE network, receiving a voice call of a Circuit Switching (CS) domain of a network side;

step S302, executing the CSFB process, establishing the voice call in the network capable of processing the CS domain voice call, and sending the message of canceling the VoLTE service to the network side after the voice call is finished.

When the Circuit Switched Fallback (CSFB) processing is executed, the current LTE network is switched to the network capable of processing the CS domain voice call. Here, the network capable of handling the CS domain voice call is any one of 2G or 3G network (GSM, WCDMA, TDSCDMA, CDMA). Specifically, the switching mode is determined according to a network access mode of the mobile terminal.

In step S301, after receiving a voice call from the CS domain of the circuit switching on the network side, the state of the VoLTE service in the mobile terminal needs to be determined;

when the VoLTE service state of the mobile terminal is the registration state, the specific steps in step S302 are executed; when the VoLTE service state of the mobile terminal is a logout state, the circuit domain fallback CSFB processing is executed, the voice call is established in the network capable of processing the CS domain voice call, and after the voice call is finished, the processing related to the logout of the VoLTE service is not performed any more.

In this embodiment, when the mobile terminal resides in the LTE network, the registration state of the VoLTE service needs to be determined. The method judges whether the registration state of the VoLTE service is used for judging whether subsequent VoLTE service logout processing is needed when a CS domain call comes, and avoids the subsequent repeated logout process when the VoLTE service is in the logout state.

Based on the above, in the embodiment of the present invention, the method, the device, and the storage medium for improving the success rate of the VoLTE call provided by the present invention execute the CSFB process after receiving the voice call from the CS domain of the circuit switch on the network side when the mobile terminal resides in the LTE network, establish the voice call in the network capable of processing the CS domain voice call, and send the message of canceling the VoLTE service to the network side after the voice call is finished. Therefore, after the CSFB call is finished, the logout VoLTE is sent to the network side under the condition that no voice service exists, the success rate of logout can be effectively ensured, the VoLTE registration states of the terminal and the network side are unified, the condition that the call fails due to the fact that the states are not unified during the period that the terminal registers the VoLTE is effectively avoided, and the success rate of the call is improved.

Example 2

In the embodiment of the invention, the invention also provides a method for improving the success rate of the VoLTE call. On the basis of the previous embodiment, the method for improving the success rate of the VoLTE call of the embodiment limits the specific implementation of how to send the message for canceling the VoLTE service to the network side after the voice of the mobile terminal is finished.

Specifically, the method for improving the success rate of the VoLTE call provided by the embodiment of the present invention, as shown in fig. 4, includes the following steps:

step S401, when the mobile terminal resides in the LTE network and the VoLTE service is registered successfully, receiving a voice call of a circuit switching CS domain of a network side;

step S402, executing the CSFB process, and establishing voice communication in the network capable of processing the CS domain voice communication;

step S403, after the voice call is finished, inquiring whether a data service link exists in the network capable of processing the CS domain voice call; if yes, go to step S404; otherwise, go to step S405;

step S404, sending a message of cancelling the VoLTE service to the network side based on the existing data service link, and executing step 406.

Step S405, reactivate a data service link, send a request for cancelling the VoLTE service to the network side based on the data service link, and execute step S406.

In step S406, a normal processing flow is executed. For example, re-camping on LTE and re-registering the VoLTE service, or when the LTE camping condition is not satisfied, camping on the current network and performing related processing.

In this embodiment, after the mobile terminal receives a voice call from the CS domain of the network side and performs corresponding processing on a voice call, since the message for canceling the VoLTE service needs to be transmitted through the PS domain, after the voice call is ended, it is necessary to detect whether a data service link exists in the current network capable of processing the voice call of the CS domain; if the data service link exists, the data service link can be directly used for transmission, and if the data service link does not exist, the data service link needs to be reactivated for transmission.

For example, when the mobile terminal resides in the LTE network and the VoLTE service registration is successful, a voice call in the CS domain of the network side is received, the CSFB procedure is executed, the current network is switched to the GSM network, and a call is established on the GSM network. After the CSFB call is ended, the mobile terminal continues to stop on the GSM network for a few seconds, and performs the following actions: detecting a data link service in the current GSM network, and activating a data service link if the data service link does not exist; when the existence is detected, a deregistration (deregisterer) message, namely the VoLTE message, is sent to the network side through the data service link, at the moment, the GSM voice service does not exist, the GSM network is normally resident, and the success rate of the VoLTE service of deregistration (deregistration closing) can be ensured. Then, normal procedures, such as reselection to LTE, etc., may be performed.

Based on the above, the present invention is applicable to a mobile terminal that cannot be processed by both CS domain and PS domain, and after the CS domain voice call is finished, sends a message of cancelling VoLTE service to the network side through the data service link of the PS domain: and when the data service link does not exist, one data service link is reactivated for transmission. Therefore, the success rate of cancelling the VoLTE service by the network side is improved, the registration state of the VoLTE service is kept consistent between the terminal side and the network side, and the success rate of calling is effectively improved.

Example 3

In the embodiment of the invention, the invention also provides a method for improving the success rate of the VoLTE call. On the basis of the previous embodiment, the method for improving the success rate of the VoLTE call is suitable for the mobile terminal which can process the CS domain and the PS domain in parallel, and the data processing speed can be effectively improved by the method.

Specifically, the method for improving the success rate of the VoLTE call provided by the embodiment of the present invention, as shown in fig. 5, includes the following steps:

step S501, when the mobile terminal resides in a long term evolution LTE network and the VoLTE service is registered successfully, a voice call of a circuit switching CS domain of a network side is received;

step S502, executing Circuit Switched Fallback (CSFB) processing, establishing voice call in a network capable of processing CS domain voice call, and sending a message of canceling VoLTE service to a network side;

step S503, after the voice call is finished, when the data service link in the network capable of processing the CS domain voice call, sending a message for inquiring the registration state of the VoLTE service to the network side; when a registered message sent by the network side is received, step S504 is executed; when a logout message sent by the network side is received, step S505 is executed;

step S504, a message of canceling the VoLTE service is sent to the network side through the data service link.

In step S505, a normal procedure (e.g., reselection to LTE, etc.) is performed.

In this embodiment, for a mobile terminal capable of processing CS domain voice and PS domain (deregistering VoLTE service) concurrency, when establishing a voice call, VoLTE service may be sent to the network side at the same time; in order to ensure whether the message for logging off the VoLTE service is successfully sent, whether the message for inquiring the VoLTE service registration state is successful or not can be directly determined by sending the message for inquiring the VoLTE service registration state; if the voice call is unsuccessful, the processing of resending the VoLTE service message is carried out after the subsequent voice call is ended; when the success is achieved, subsequent processing is not required.

Based on the above, the scheme can effectively ensure the consistency of the states of the terminal and the network side, and improve the success rate of calling. Meanwhile, the message for canceling the VoLTE service is sent when the call is established, when the message is successfully sent, subsequent processing is not needed, and the speed of processing the call by the mobile terminal can be effectively improved.

Example 4

The embodiment of the invention provides a mobile terminal. The mobile terminal comprises a memory 109 and a processor 110; wherein, the memory 109 stores a program for improving the success rate of the voice long term evolution VoLTE call, and when the program is executed by the processor 110, the program is used to implement the following steps:

when residing in the LTE network, receiving a voice call of a Circuit Switching (CS) domain of a network side;

and performing Circuit Switched Fallback (CSFB) processing, establishing voice call in a network capable of processing the voice call of the CS domain, and sending a message of cancelling the VoLTE service to a network side after the voice call is finished.

Optionally, when performing the CS fallback CSFB process, the current LTE network is switched to a network capable of handling the CS domain voice call.

Here, the network capable of handling the CS domain voice call is any one of 2G or 3G network (GSM, WCDMA, TDSCDMA, CDMA). Specifically, the switching mode is determined according to a network access mode of the mobile terminal.

After receiving the voice call from the CS domain, the processor 110 executes the program to implement the following steps:

After the CSFB call is finished, the mobile terminal sends the logout VoLTE to the network side under the condition of no voice service, so that the success rate of the logout can be effectively ensured, the VoLTE registration states of the terminal and the network side are unified, the condition that the call fails due to the non-unified states during the period that the terminal registers the VoLTE is effectively avoided, and the success rate of the call is improved.

Example 5

In an embodiment of the present invention, there is also provided a mobile terminal including a memory 109 and a processor 110; wherein, the memory 109 stores a program for improving the success rate of the voice long term evolution VoLTE call, and when the program is executed by the processor 110, the program is used to implement the following steps:

when the mobile terminal resides in a Long Term Evolution (LTE) network and the VoLTE service is registered successfully, receiving a voice call of a Circuit Switching (CS) domain of a network side;

executing Circuit Switched Fallback (CSFB) processing, establishing a voice call in a network capable of processing the CS domain voice call, and after the voice call is finished, inquiring whether a data service link exists in the network capable of processing the CS domain voice call:

if the VoLTE service exists, sending a logout VoLTE service to a network side based on the existing data service link;

and when the data service link does not exist, reactivating the data service link, and sending a request for canceling the VoLTE service to the network side based on the data service link.

The embodiment is suitable for the mobile terminal which can not be processed by the CS domain and the PS domain at the same time, and after the voice call of the CS domain is finished, the embodiment sends the message of canceling the VoLTE service to the network side through the data service link of the PS domain: and when the data service link does not exist, one data service link is reactivated for transmission. Therefore, the success rate of cancelling the VoLTE service by the network side is improved, the registration state of the VoLTE service is kept consistent between the terminal side and the network side, and the success rate of calling is effectively improved.

Example 6

executing Circuit Switched Fallback (CSFB) processing, establishing a voice call in a network capable of processing the CS domain voice call, and sending a message of canceling a VoLTE service to a network side;

after the voice call is finished, when a data service link in a network capable of processing the voice call of the CS domain is processed, sending a message for inquiring the registration state of the VoLTE service to a network side;

when a registered message sent by a network side is received, after the voice call is finished, a message for canceling the VoLTE service is sent to the network side through a data service link;

and when a logout message sent by the network side is received, after the voice call is finished, the message of logging out the VoLTE service is not sent to the network side any more.

Based on the above, in the mobile terminal provided in the embodiment of the present invention, for a mobile terminal capable of processing CS domain voice and PS domain (cancelling VoLTE service), when establishing a voice call, VoLTE service may be sent to the network side at the same time; in order to ensure whether the message for logging off the VoLTE service is successfully sent, whether the message for inquiring the VoLTE service registration state is successful or not can be directly determined by sending the message for inquiring the VoLTE service registration state; if the voice call is unsuccessful, the processing of resending the VoLTE service message is carried out after the subsequent voice call is ended; when the success is achieved, subsequent processing is not required. Therefore, the method and the system can effectively ensure the consistency of the states of the terminal and the network side and improve the success rate of calling. Meanwhile, the message for canceling the VoLTE service is sent when the call is established, when the message is successfully sent, subsequent processing is not needed, and the speed of processing the call by the mobile terminal can be effectively improved.

Example 7

According to an embodiment of the present invention, there is also provided a computer-readable storage medium. The computer readable storage medium stores a program for improving the success rate of a voice long term evolution (VoLTE) call, and when the program is executed by a processor, the program for improving the success rate of the voice long term evolution (VoLTE) call realizes the following steps:

and executing Circuit Switched Fallback (CSFB) processing, establishing voice call in a network capable of processing the voice call of the CS domain, and sending a message of canceling the VoLTE service to a network side after the voice call is finished.

Optionally, the program when executed by the processor is configured to perform the steps of:

after receiving a voice call of a Circuit Switching (CS) domain of a network side, judging the state of a VoLTE service of a mobile terminal;

when the VoLTE service is in a registration state, executing circuit domain fallback (CSFB) processing, establishing voice call in a network capable of processing CS domain voice call, and sending a message for canceling the VoLTE service to a network side after the voice call is finished;

and when the VoLTE service is in a logout state, executing circuit domain fallback CSFB processing, establishing voice call in the network capable of processing the CS domain voice call, and after the voice call is finished, not sending a message for logging out the VoLTE service to the network side.

after the voice call is finished, whether a data service link exists currently is inquired in a network capable of processing the voice call of the CS domain; and when the data service link exists, sending a message for canceling the VoLTE service to the network side based on the data service link.

and when the data service link does not exist, reactivating the data service link, and sending a message of canceling the VoLTE service to the network side based on the data service link.

Optionally, the program when executed by the processor is further configured to perform the steps of:

when a voice call is established in a network capable of processing a CS domain voice call, a message of canceling a VoLTE service is sent to a network side; after the voice call is finished, sending a message for inquiring the VoLTE service state to the network side through the data service link; and when the registered message sent by the network side is received, after the voice call is finished, sending a message of canceling the VoLTE service to the network side.

The storage medium provided by the invention executes the CSFB processing after receiving the voice call of the circuit switching CS domain of the network side when the mobile terminal resides in the LTE network, establishes the voice call in the network capable of processing the CS domain voice call, and sends the message of canceling the VoLTE service to the network side after the voice call is finished. Therefore, after the CSFB call is finished, the logout VoLTE is sent to the network side under the condition that no voice service exists, the success rate of logout can be effectively ensured, the VoLTE registration states of the terminal and the network side are unified, the condition that the call fails due to the fact that the states are not unified during the period that the terminal registers the VoLTE is effectively avoided, and the success rate of the call is improved.

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.

The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.

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 invention 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 (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for improving the success rate of a voice long term evolution (VoLTE) call is characterized by comprising the following steps:

executing Circuit Switched Fallback (CSFB) processing, establishing a voice call in a network capable of processing a CS domain voice call, and inquiring whether a data service link exists in the network capable of processing the CS domain voice call after the voice call is finished; and when the data service link exists, sending a message for canceling the VoLTE service to the network side based on the data service link.

2. The method of claim 1, wherein the method further comprises:

3. The method according to claim 1 or 2, wherein when establishing a voice call in a network capable of handling CS domain voice calls, the method further comprises:

sending a message for canceling the VoLTE service to the network side;

4. The method of claim 3, wherein the method further comprises:

5. A mobile terminal comprising a memory and a processor; wherein the memory has stored thereon a program for improving a success rate of a voice long term evolution VoLTE call, which when executed by the processor, is configured to perform the steps of:

when the mobile terminal resides in a Long Term Evolution (LTE) network, after receiving a voice call of a Circuit Switching (CS) domain of a network side, judging whether a VoLTE service is in a registered state or not;

and when the VoLTE service is in a registered state, executing circuit domain fallback (CSFB) processing, establishing voice call in a network capable of processing CS domain voice call, and after the voice call is finished, sending a message for canceling the VoLTE service to the network side.

6. The mobile terminal of claim 5, wherein the program when executed by the processor is operative to:

7. The mobile terminal of claim 6, wherein the program when executed by the processor is operative to:

8. A mobile terminal as claimed in claim 6 or 7, wherein the program when executed by the processor is further operable to perform the steps of:

9. A computer readable storage medium, wherein a program for improving the success rate of a voice long term evolution VoLTE call is stored on the computer readable storage medium, and when executed by a processor, the program for improving the success rate of the voice long term evolution VoLTE call realizes the steps of the method for improving the success rate of the voice long term evolution VoLTE call according to any one of claims 1 to 4.