CN110972088B - Voice call network switching method and device, storage medium and electronic equipment - Google Patents

Voice call network switching method and device, storage medium and electronic equipment Download PDF

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Publication number
CN110972088B
CN110972088B CN201911180770.8A CN201911180770A CN110972088B CN 110972088 B CN110972088 B CN 110972088B CN 201911180770 A CN201911180770 A CN 201911180770A CN 110972088 B CN110972088 B CN 110972088B
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network
voice call
user terminal
terminal
sip
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CN110972088A (en
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朱中华
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/16—Communication-related supplementary services, e.g. call-transfer or call-hold
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/08—Upper layer protocols
    • H04W80/10—Upper layer protocols adapted for application session management, e.g. SIP [Session Initiation Protocol]

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a method, a device, a storage medium and an electronic device for switching a voice call network, wherein the method comprises the following steps: acquiring the network signal intensity of a WiFi voice call adopted by a user terminal; under the condition that the user terminal does not support LTE voice call, if the network signal intensity is smaller than a preset intensity threshold value, sending a Session Initiation Protocol (SIP) update request to a network terminal so that the network terminal searches a fallen target network based on the SIP update request; and receiving an SIP response message carrying the target network returned by the network terminal, executing a CSFB process, switching the current resident network to the target network, and carrying out voice communication by adopting the target network. Therefore, by adopting the embodiment of the application, when the WiFi network signal is poor, the network switching can be automatically carried out to continue the voice call, and the convenience of carrying out the network switching by adopting the voice call is improved.

Description

Voice call network switching method and device, storage medium and electronic equipment
Technical Field
The present application relates to the field of computer technologies, and in particular, to a method and an apparatus for switching a voice call network, a storage medium, and an electronic device.
Background
With the rapid popularization of mobile terminals, the mobile terminals have become essential tools for entertainment and communication in daily life of people, and great convenience is brought to the life of people.
The IMS (IP Multimedia Subsystem) is not supported by the mobile terminal during a Voice call, and in the prior art, the IMS Voice system includes a Voice Over WiFi (WiFi) service and a Voice Over LTE (LTE Voice) service.
At present, when a mobile terminal initiates a voice call under the condition of supporting a VoWiFi voice service but not a VoLTE voice service, because VoWiFi is a technology of depending on a WiFi network to carry out IMS call, when a user uses the VoWiFi voice service to carry out call, once the signal of the WiFi network is poor, a prompt message for carrying out network switching is displayed on the mobile terminal, so that the user can conveniently ensure the continuity of the call after switching the network and avoid call drop. However, this network switching method requires manual operation by the user, which results in insufficient convenience when performing network switching by voice call.
Disclosure of Invention
The embodiment of the application provides a voice call network switching method, a voice call network switching device, a storage medium and electronic equipment, which can automatically perform network switching to continue a voice call when a WiFi network signal is poor, and improve the convenience when the voice call is adopted to perform network switching. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a method for switching a voice call network, where the method includes:
acquiring the network signal intensity of a WiFi voice call adopted by a user terminal;
under the condition that the user terminal does not support LTE voice call, if the network signal intensity is smaller than a preset intensity threshold value, sending a Session Initiation Protocol (SIP) update request to a network terminal so that the network terminal searches a fallen target network based on the SIP update request;
and receiving an SIP response message carrying the target network returned by the network terminal, executing a CSFB process, switching the current resident network to the target network, and carrying out voice communication by adopting the target network.
In a second aspect, an embodiment of the present application provides a method for switching a voice call network, where the method includes:
receiving an SIP updating request sent by a user terminal, wherein the network signal intensity of the user terminal adopting WiFi voice communication is smaller than a preset intensity threshold value under the condition that the user terminal does not support LTE voice communication;
searching a fallen target network based on the SIP updating request;
and sending an SIP response message carrying the target network to the user terminal so that the user terminal executes a CSFB flow and adopts the target network to carry out voice call.
In a third aspect, an embodiment of the present application provides a device for switching a voice call network, where the device includes:
the intensity acquisition module is used for acquiring the network signal intensity of the WiFi voice call adopted by the user terminal;
the request sending module is used for sending a Session Initiation Protocol (SIP) update request to a network terminal if the network signal strength is smaller than a preset strength threshold value under the condition that the user terminal does not support LTE voice call, so that the network terminal searches for a fallen target network based on the SIP update request;
and the network switching module is used for receiving the SIP response message carrying the target network returned by the network terminal, executing a CSFB process, switching the current resident network to the target network, and carrying out voice communication by adopting the target network.
In a fourth aspect, an embodiment of the present application provides a device for switching a voice call network, where the device includes:
the request receiving module is used for receiving an SIP updating request sent by a user terminal, and the network signal intensity of the user terminal adopting WiFi voice call is smaller than a preset intensity threshold value under the condition that the user terminal does not support LTE voice call;
the network searching module is used for searching a fallen target network based on the SIP updating request;
and the message sending module is used for sending the SIP response message carrying the target network to the user terminal so that the user terminal executes a CSFB flow and adopts the target network to carry out voice communication.
In a fifth aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-mentioned method steps.
In a sixth aspect, an embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
in the embodiment of the application, the network signal strength of a WiFi voice call adopted by a user terminal is obtained, under the condition that the user terminal does not support the LTE voice call, if the network signal strength is smaller than a preset strength threshold value, a Session Initiation Protocol (SIP) update request is sent to the network terminal, so that the network terminal searches a fallen target network based on the SIP update request, receives an SIP response message carrying the target network returned by the network terminal, executes a CSFB (switched fallback) process, switches a current resident network to the target network, and adopts the target network to perform the voice call. When the WiFi network signal is poor, network switching can be automatically carried out to continue voice communication, and convenience in network switching by adopting voice communication is improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a voice call network handover method according to an embodiment of the present application;
fig. 2 is a schematic flowchart of a voice call network handover method according to an embodiment of the present application;
fig. 3 is a flowchart illustrating a method for switching a voice call network according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a method for switching a voice call network according to an embodiment of the present application;
fig. 5 is a schematic structural diagram of a voice call network switching apparatus according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a voice call network switching apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of a voice call network switching apparatus according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the application, as detailed in the appended claims.
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The following describes in detail a voice call network handover method provided in an embodiment of the present application with reference to fig. 1 to 4. The method may be implemented in dependence on a computer program, operable on a voice telephony network switching apparatus based on the von neumann architecture. The computer program may be integrated into the application or may run as a separate tool-like application. The voice call network switching device in the embodiment of the present application may be a user terminal, where the user terminal includes but is not limited to: personal computers, tablet computers, handheld devices, in-vehicle devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and the like.
Please refer to fig. 1, which is a flowchart illustrating a voice call network switching method according to an embodiment of the present application, where the embodiment of the present application is described by taking a user terminal side as an example. The user terminal includes but is not limited to: personal computers, tablet computers, handheld devices, in-vehicle devices, wearable devices, computing devices or other processing devices connected to a wireless modem, and the like. As shown in fig. 1, the method of the embodiment of the present application may include the steps of:
s101, acquiring the network signal intensity of a WiFi voice call adopted by a user terminal;
the WiFi voice is VoWiFi. When dialing, the VoWiFi user terminal may preferentially place calls over the WiFi network. Automatic seamless transition between the mobile network and the WiFi network is possible.
Compared with 2G and 3G voice technologies, which are voice call technologies based on IP Multimedia Subsystem (IMS) through Circuit Switched (CS) and VoWiFi, the IMS System of the operator must be used to complete the call-in and call-out function, so that the price of the package is calculated.
However, the WiFi voice call depends on the signal strength of the WiFi network, when the WiFi signal strength is large enough, the connection of the voice call can be ensured, and when the WiFi signal strength is small, a call drop may be caused. The WiFi signal strength can be acquired through a signal detection APP carried by the user terminal.
S102, under the condition that the user terminal does not support LTE voice communication, if the network signal intensity is smaller than a preset intensity threshold value, sending a Session Initiation Protocol (SIP) update request to a network terminal so that the network terminal searches a fallen target network based on the SIP update request;
the LTE voice is VoLTE, which is also a voice call technology based on IMS like volwifi.
The main difference between VoWiFi and VoLTE is that the former uses WiFi as an access point, and the latter uses a base station, but both access to IMS finally is limited by operator control and management.
Similarly, VoLTE, like VoWiFi, must complete the call-in and call-out function through the operator's IMS system, so it is necessary to calculate the package tariff.
And comparing the detected network signal strength with a preset strength threshold, and if the network signal strength is smaller than the preset strength threshold, indicating that the network signal strength can not ensure the connection of the WiFi voice call. And, the user terminal does not support the LTE voice call, and in order to continue to maintain the voice call, the user terminal sends an SIP Update Request message to the network terminal, so that the network terminal searches whether there is a resource to perform the CS voice call, and informs the user terminal when it is confirmed that there is a resource.
Wherein, SIP (Session Initiation Protocol) is a multimedia communication Protocol established by IETF (Internet Engineering Task Force). It is a text-based application-layer control protocol for creating, modifying and releasing sessions of one or more participants. The SIP is an IP voice session control protocol originated from the Internet, and has the characteristics of flexibility, easiness in implementation, convenience in expansion and the like.
It should be noted that the network terminal may be understood as an operator server, and when the user terminal initiates a voice call, the network terminal first initiates an SIP INVITE message to complete a call connection and call-out function. The SIP-INVITE comprises a plurality of signaling, such as Accept-Contact, and a mark is added in the SIP-INVITE for identifying that the terminal does not support VoLTE operation under the SIP protocol.
S103, receiving the SIP response message carrying the target network returned by the network terminal, executing a CSFB process, switching the current resident network to the target network, and carrying out voice communication by adopting the target network.
The Circuit Switched Fallback (CSFB) technology is suitable for a scene of overlapping coverage of a 2G/3G Circuit domain and a TD-LTE wireless network, the network structure is simple, an IMS system does not need to be deployed, and existing CS network resources can be effectively utilized. However, in a scenario that the TD-LTE does not reach the full network coverage, the TD-LTE/TD-SCDMA/GSM (gprs) multimode dual-standby terminal may select the TD-SCDMA/GSM mode to establish the voice service, select the network to which the PS domain is currently attached to establish the packet domain service, and have no additional requirement on the network, but the terminal implementation is relatively complex.
Specifically, the user terminal receives an SIP Update Response message returned by the network terminal, reads a target network (2G or 3G network) carried in the message, and then falls back to the target network from LTE, so as to continue the voice call using the target network. The current network where the user terminal resides is an LTE network.
In the embodiment of the application, the network signal strength of a WiFi voice call adopted by a user terminal is obtained, under the condition that the user terminal does not support the LTE voice call, if the network signal strength is smaller than a preset strength threshold value, a Session Initiation Protocol (SIP) update request is sent to the network terminal, so that the network terminal searches a fallen target network based on the SIP update request, receives an SIP response message carrying the target network returned by the network terminal, executes a CSFB (switched fallback) process, switches a current resident network to the target network, and adopts the target network to perform the voice call. When the WiFi network signal is poor, network switching can be automatically carried out to continue voice communication, and convenience in network switching by adopting voice communication is improved.
Please refer to fig. 2, which is a flowchart illustrating a voice call network switching method according to an embodiment of the present application. The embodiments of the present application are described with a network terminal side as an example. The network terminal is an operator server and comprises modules such as ePDG, CSCF, MME, eNB, 2G/3G and the like. The voice call network switching method can comprise the following steps:
s201, receiving an SIP update request sent by a user terminal, wherein the network signal intensity of the user terminal adopting WiFi voice communication is smaller than a preset intensity threshold value under the condition that the user terminal does not support LTE voice communication;
the user terminal determines whether WiFi Calling voice connection can be guaranteed or not by detecting WiFi signal quality or WiFi coverage, and if the voice connection condition is not met, the user terminal triggers an SIP Update Request signaling to inform the network terminal that a CSFB flow needs to be carried out.
S202, searching a fallen target network based on the SIP updating request;
after the network terminal receives the signaling, the ePDG applies for CS resources to the CSCF, the CSCF queries resources to the MME, the MME continues applying for resources to the eNB, the eNB judges whether resources are available for CS call, if the resources are sufficient, the MME is informed, and the MME returns results to the CSCF and the ePDG and carries the destination network where the terminal falls back. And meanwhile, the MME informs the fallback destination network to prepare circuit resources. The specific flow is shown in fig. 3.
S203, sending the SIP response message carrying the target network to the user terminal so that the user terminal executes the CSFB process and adopts the target network to carry out voice communication.
After receiving the notification message, the CSCF returns a SIP Update Response message to the terminal to notify whether CS telephony is available, and a destination network that requires the user terminal to fall back is attached to this signaling.
And after receiving the SIP Update Response message, the user terminal executes CSFB operation according to the fallback destination network information and performs voice communication in a destination network circuit domain.
In the embodiment of the application, the network terminal receives the SIP update request sent by the user terminal to search a fallback target network in a scene that the WiFi network signal is poor and the LTE voice call function is not supported, and notifies the user terminal of the existence of the target network while preparing the fallback resources, so that the user terminal can conveniently execute the CSFB process to realize network fallback. The switchable network can be searched and sent to the user terminal when the WiFi network signal of the user terminal is poor, the user terminal can automatically switch the network to continue the voice call conveniently, and convenience in network switching by adopting the voice call is improved.
Please refer to fig. 4, which is a flowchart illustrating a voice call network switching method according to an embodiment of the present application. The embodiment of the present application is described by taking a network terminal and a user terminal as examples. The voice call network switching method can comprise the following steps:
s301, a user terminal initiates a WiFi voice call to a network terminal and establishes WiFi voice network connection with the network terminal;
the WiFi voice is VoWiFi. When dialing, the VoWiFi user terminal may preferentially place calls over the WiFi network.
Compared with the 2G and 3G voice technologies via Circuit Switching (CS), VoWiFi is an IMS-based voice call technology, and it is necessary to complete the call-in and call-out function through the IMS system of the operator.
Therefore, before the user terminal uses the WiFi voice mode to talk, it needs to establish a WFC connection with the operator. The operator can be understood as a network terminal, including modules such as ePDG, CSCF, MME, eNB, 2G/3G, etc.
S302, a user terminal acquires an SIP invitation message when WiFi voice call is initiated, and searches whether mark information exists in the SIP invitation message, wherein the mark information is used for identifying that the user terminal does not support LTE voice call;
while conventional voice services operate in Circuit Switched (CS) networks, LTE is a Packet Switched (PS) only network and has no way to handle CS voice. To solve the voice traffic problem in LTE networks, one solution is to drop the voice back to 2G/3G, which is called csfb (cs fallback). Another solution is VoLTE, which transmits voice entirely over the LTE network, independent of the 2G/3G network.
First, a SIP-INVITE message is initiated to a network terminal so as to complete the function of connecting and dialing out the telephone. The SIP-INVITE comprises a plurality of signaling, such as Accept-Contact, and a mark is added in the SIP-INVITE for identifying that the terminal does not support VoLTE operation under the SIP protocol. When the flag exists, it indicates that VoLTE is not supported, therefore, when the network signal strength is less than the preset strength threshold, the WIFI signal strength at this time is not enough to continue the voice call, it is necessary to perform the CSFB procedure and fall back to the 2G/3G network for the voice service, but it is necessary to query the network terminal whether the user terminal can perform the CSFB procedure, if so, when the VoWiFi cannot maintain the voice call, it falls back to the 2G/3G network for the voice call.
S303, the user terminal sends a service query request to the network terminal;
s304, the network terminal queries whether the user equipment can execute a CSFB procedure based on the service query request;
and when the network terminal confirms that the user terminal can execute the CSFB flow, the network terminal informs the user terminal and the user terminal records.
S305, the user terminal acquires the network signal intensity of the WiFi voice call adopted by the user terminal;
see S101 for details, which are not described herein.
S306, the user terminal sends an SIP update request to a network terminal if the network signal intensity is smaller than a preset intensity threshold value under the condition that the user terminal does not support LTE voice call;
when the network signal strength is smaller than the preset strength threshold, the WIFI signal strength is not enough to continue the voice call, and a CSFB process is necessary to fall back to the 2G/3G network for voice service. Therefore, the user terminal triggers a SIP Update Request signaling to inform the network terminal of the need of performing the CSFB procedure.
S307, the network terminal receives the SIP update request sent by the user terminal, and inquires whether circuit switching resources exist;
after the network terminal receives the signaling, the ePDG applies for CS resources to the CSCF, the CSCF queries resources to the MME, the MME continues applying for resources to the eNB, and the eNB judges whether resources are available for CS call.
S308, when the network terminal confirms that the circuit switching resource exists, generating an SIP response message, preparing a target network corresponding to the circuit switching resource, adding the target network corresponding to the circuit switching resource into the SIP response message, and sending the SIP response message carrying the target network to the user terminal;
if the resources are sufficient, the eNB informs the MME, the MME returns the result to the CSCF and the ePDG, and then the SIP Update Response carrying the target network is sent to the user terminal.
S309, the user terminal receives the SIP response message carrying the target network returned by the network terminal, executes a CSFB process, switches the current resident network to the target network, and performs voice communication by adopting the target network;
see S103 specifically, and the details are not repeated here.
S310, when the user terminal detects that the voice call is finished, the user terminal is switched to the current resident network from the target network, and the priority of the current resident network is higher than that of the target network.
The currently camped network is an LTE network.
When the voice call is ended, the user can be understood to hang up the call actively or be hung up by the opposite end of the call, and the user can return to the PS domain from the CS domain and reside in the LTE network. Therefore, the PS service can be realized by preferentially adopting the LTE network.
In the embodiment of the application, the network signal strength of a WiFi voice call adopted by a user terminal is obtained, under the condition that the user terminal does not support the LTE voice call, if the network signal strength is smaller than a preset strength threshold value, a Session Initiation Protocol (SIP) update request is sent to the network terminal, so that the network terminal searches a fallen target network based on the SIP update request, receives an SIP response message carrying the target network returned by the network terminal, executes a CSFB (switched fallback) process, switches a current resident network to the target network, and adopts the target network to perform the voice call. When the WiFi network signal is poor, network switching can be automatically carried out to continue voice communication, and convenience in network switching by adopting voice communication is improved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 5, a schematic structural diagram of a voice call network switching apparatus according to an exemplary embodiment of the present application is shown. The voice call network switching device can be realized by software, hardware or a combination of the two to form all or part of the terminal. The device 1 comprises a strength acquisition module 10, a request sending module 20 and a network switching module 30.
The intensity acquisition module 10 is used for acquiring the network signal intensity of the user terminal adopting the WiFi voice call;
a request sending module 20, configured to send a session initiation protocol SIP update request to a network terminal if the network signal strength is smaller than a preset strength threshold under the condition that the user terminal does not support LTE voice call, so that the network terminal searches for a fallback target network based on the SIP update request;
and the network switching module 30 is configured to receive an SIP response message carrying the target network returned by the network terminal, execute a CSFB procedure, switch the current resident network to the target network, and perform voice call using the target network.
Optionally, as shown in fig. 6, the apparatus further includes:
the message obtaining module 40 is configured to obtain an SIP invite message when a WiFi voice call is initiated, and search for whether there is tag information in the SIP invite message, where the tag information is used to identify that the user terminal does not support an LTE voice call.
Optionally, as shown in fig. 6, the apparatus further includes:
a request sending module 50, configured to send a service query request to the network terminal, so that the network terminal queries whether the user terminal can execute a CSFB procedure.
Optionally, the network switching module 30 is further configured to:
and when the voice call is detected to be finished, switching from the target network to the current resident network, wherein the priority of the current resident network is higher than that of the target network.
Optionally, as shown in fig. 6, the apparatus further includes:
the connection establishing module 60 is configured to initiate a WiFi voice call to a network terminal, and establish a WiFi voice network connection with the network terminal.
It should be noted that, when the voice call network switching apparatus provided in the foregoing embodiment executes the voice call network switching method, only the division of the functional modules is taken as an example, and in practical applications, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules, so as to complete all or part of the functions described above. In addition, the voice call network switching device and the voice call network switching method provided by the above embodiments belong to the same concept, and details of implementation processes are shown in the method embodiments, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the embodiment of the application, the network signal strength of a WiFi voice call adopted by a user terminal is obtained, under the condition that the user terminal does not support the LTE voice call, if the network signal strength is smaller than a preset strength threshold value, a Session Initiation Protocol (SIP) update request is sent to the network terminal, so that the network terminal searches a fallen target network based on the SIP update request, receives an SIP response message carrying the target network returned by the network terminal, executes a CSFB (switched fallback) process, switches a current resident network to the target network, and adopts the target network to perform the voice call. When the WiFi network signal is poor, network switching can be automatically carried out to continue voice communication, and convenience in network switching by adopting voice communication is improved.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 7, a schematic structural diagram of a voice call network switching apparatus according to an exemplary embodiment of the present application is shown. The voice call network switching device can be realized by software, hardware or a combination of the two to form all or part of the terminal. The device 2 comprises a request receiving module 10, a network searching module 20 and a message sending module 30.
The system comprises a request receiving module 10, a SIP update request receiving module, a SIP update request sending module, a WiFi voice call processing module and a WiFi voice call processing module, wherein the network signal strength of the WiFi voice call is smaller than a preset strength threshold value under the condition that the user terminal does not support the LTE voice call;
a network searching module 20, configured to search a fallback target network based on the SIP update request;
a message sending module 30, configured to send an SIP response message carrying the target network to the user terminal, so that the user terminal executes a CSFB procedure and performs voice call using the target network.
Optionally, the network searching module 20 is specifically configured to:
querying whether a circuit switched resource exists;
and when the circuit switching resource is confirmed to exist, generating an SIP response message, preparing a target network corresponding to the circuit switching resource, and adding the target network corresponding to the circuit switching resource to the SIP response message.
Optionally, the request receiving module 10 is further configured to:
and receiving a service inquiry request sent by the user terminal, and inquiring whether the user terminal can execute the CSFB process.
Optionally, the apparatus further comprises:
and the connection establishing module is used for receiving the WiFi voice call initiated by the user terminal and establishing the WiFi voice network connection with the user terminal.
It should be noted that, when the voice call network switching apparatus provided in the foregoing embodiment executes the voice call network switching method, only the division of the functional modules is taken as an example, and in practical applications, the function distribution may be completed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules, so as to complete all or part of the functions described above. In addition, the voice call network switching device and the voice call network switching method provided by the above embodiments belong to the same concept, and details of implementation processes are shown in the method embodiments, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In the embodiment of the application, the network terminal receives the SIP update request sent by the user terminal to search a fallback target network in a scene that the WiFi network signal is poor and the LTE voice call function is not supported, and notifies the user terminal of the existence of the target network while preparing the fallback resources, so that the user terminal can conveniently execute the CSFB process to realize network fallback. The switchable network can be searched and sent to the user terminal when the WiFi network signal of the user terminal is poor, the user terminal can automatically switch the network to continue the voice call conveniently, and convenience in network switching by adopting the voice call is improved.
An embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, where the instructions are suitable for being loaded by a processor and executing the method steps in the embodiments shown in fig. 1 to 4, and a specific execution process may refer to specific descriptions of the embodiments shown in fig. 1 to 4, which are not described herein again.
As shown in fig. 8, the terminal 600 includes: a processor 601 and a memory 602. The terminal is a user terminal or a network terminal.
In this embodiment, the processor 601 is a control center of a computer system, and may be a processor of an entity machine or a processor of a virtual machine. The processor 601 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 601 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 601 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state.
The memory 602 may include one or more computer-readable storage media, which may be non-transitory. The memory 602 may also include high-speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments of the present application, a non-transitory computer readable storage medium in the memory 602 is used to store at least one instruction for execution by the processor 601 to implement a method in embodiments of the present application.
In some embodiments, the terminal 600 further includes: a peripheral interface 603 and at least one peripheral. The processor 601, memory 602, and peripheral interface 603 may be connected by buses or signal lines. Various peripheral devices may be connected to the peripheral interface 603 via a bus, signal line, or circuit board. Specifically, the peripheral device includes: at least one of a display screen 604, a camera 605, and an audio circuit 606.
The peripheral interface 603 may be used to connect at least one peripheral related to I/O (Input/Output) to the processor 601 and the memory 602. In some embodiments of the present application, the processor 601, memory 602, and peripheral interface 603 are integrated on the same chip or circuit board; in some other embodiments of the present application, any one or both of the processor 601, the memory 602, and the peripheral interface 603 may be implemented on separate chips or circuit boards. The embodiment of the present application is not particularly limited to this.
The display screen 604 is used to display a UI (User Interface). The UI may include graphics, text, icons, video, and any combination thereof. When the display screen 604 is a touch display screen, the display screen 604 also has the ability to capture touch signals on or over the surface of the display screen 604. The touch signal may be input to the processor 601 as a control signal for processing. At this point, the display screen 604 may also be used to provide virtual buttons and/or a virtual keyboard, also referred to as soft buttons and/or a soft keyboard. In some embodiments of the present application, the display screen 604 may be one, and is provided as a front panel of the terminal 600; in other embodiments of the present application, the display screens 604 may be at least two, respectively disposed on different surfaces of the terminal 600 or in a folding design; in still other embodiments of the present application, the display 604 may be a flexible display disposed on a curved surface or a folded surface of the terminal 600. Even further, the display screen 604 may be arranged in a non-rectangular irregular pattern, i.e. a shaped screen. The Display screen 604 may be made of LCD (Liquid Crystal Display), OLED (Organic Light-Emitting Diode), and the like.
The camera 605 is used to capture images or video. Optionally, the camera 605 includes a front camera and a rear camera. Generally, a front camera is disposed at a front panel of the terminal, and a rear camera is disposed at a rear surface of the terminal. In some embodiments, the number of the rear cameras is at least two, and each rear camera is any one of a main camera, a depth-of-field camera, a wide-angle camera and a telephoto camera, so that the main camera and the depth-of-field camera are fused to realize a background blurring function, and the main camera and the wide-angle camera are fused to realize panoramic shooting and VR (Virtual Reality) shooting functions or other fusion shooting functions. In some embodiments of the present application, camera 605 may also include a flash. The flash lamp can be a monochrome temperature flash lamp or a bicolor temperature flash lamp. The double-color-temperature flash lamp is a combination of a warm-light flash lamp and a cold-light flash lamp, and can be used for light compensation at different color temperatures.
Audio circuitry 606 may include a microphone and a speaker. The microphone is used for collecting sound waves of a user and the environment, converting the sound waves into electric signals, and inputting the electric signals to the processor 601 for processing. For the purpose of stereo sound collection or noise reduction, a plurality of microphones may be provided at different portions of the terminal 600. The microphone may also be an array microphone or an omni-directional pick-up microphone.
Power supply 607 is used to provide power to the various components in terminal 600. The power supply 607 may be ac, dc, disposable or rechargeable. When power supply 607 includes a rechargeable battery, the rechargeable battery may be a wired rechargeable battery or a wireless rechargeable battery. The wired rechargeable battery is a battery charged through a wired line, and the wireless rechargeable battery is a battery charged through a wireless coil. The rechargeable battery may also be used to support fast charge technology.
The block diagram of the terminal structure shown in the embodiments of the present application does not constitute a limitation to the terminal 600, and the terminal 600 may include more or less components than those shown, or combine some components, or adopt a different arrangement of components.
In this application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or unit must have a specific direction, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present application.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Accordingly, all equivalent changes made by the claims of this application are intended to be covered by this application.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims (9)

1. A method for switching a voice call network is characterized by comprising the following steps:
the method comprises the steps of obtaining an SIP invitation message when WiFi voice call is initiated, and searching whether mark information exists in the SIP invitation message, wherein the mark information is used for identifying that the user terminal does not support LTE voice call;
acquiring the network signal intensity of a WiFi voice call adopted by a user terminal;
under the condition that the user terminal does not support LTE voice call, if the network signal intensity is smaller than a preset intensity threshold value, sending a Session Initiation Protocol (SIP) update request to a network terminal so that the network terminal searches a fallen target network based on the SIP update request;
and receiving an SIP response message carrying the target network returned by the network terminal, executing a CSFB process, switching the current resident network to the target network, and carrying out voice communication by adopting the target network.
2. The method of claim 1, further comprising:
and sending a service query request to the network terminal so that the network terminal queries whether the user terminal can execute the CSFB process.
3. The method of claim 1, wherein after the voice call is conducted using the target network, further comprising:
and when the voice call is detected to be finished, switching from the target network to the current resident network, wherein the priority of the current resident network is higher than that of the target network.
4. The method of claim 1, wherein before obtaining the network signal strength of the WiFi voice call, the method further comprises:
and initiating WiFi voice communication to a network terminal, and establishing WiFi voice network connection with the network terminal.
5. A method for switching a voice call network is characterized by comprising the following steps:
receiving a WiFi voice call initiated by a user terminal, and establishing WiFi voice network connection with the user terminal, wherein if mark information exists in SIP invitation information when the user terminal initiates the WiFi voice call, the user terminal does not support the LTE voice call;
receiving an SIP updating request sent by a user terminal, wherein the network signal intensity of the user terminal adopting WiFi voice communication is smaller than a preset intensity threshold value under the condition that the user terminal does not support LTE voice communication;
searching a fallen target network based on the SIP updating request;
and sending an SIP response message carrying the target network to the user terminal so that the user terminal executes a CSFB flow and adopts the target network to carry out voice call.
6. The method of claim 5, wherein the finding a fallback target network based on the SIP update request comprises:
querying whether a circuit switched resource exists;
and when the circuit switching resource is confirmed to exist, generating an SIP response message, preparing a target network corresponding to the circuit switching resource, and adding the target network corresponding to the circuit switching resource to the SIP response message.
7. The method of claim 5, further comprising:
and receiving a service inquiry request sent by the user terminal, and inquiring whether the user terminal can execute the CSFB process.
8. A computer storage medium, characterized in that it stores a plurality of instructions adapted to be loaded by a processor and to perform the method steps according to any of claims 1 to 4 or 5 to 7.
9. An electronic device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps according to any of claims 1-4 or 5-7.
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