Voice connection method and system, electronic equipment and storage medium

Abstract

The invention provides a voice connection method and system, electronic equipment and a storage medium, and aims to solve the technical problem that voice establishment fails when a base station which does not support VORR (Voice Over Noise Ratio) falls back a terminal to an LTE (Long Term Evolution) cell to establish a voice bearer, and the method comprises the following steps: when the terminal initiates a VORR voice service on an NR base station which does not support VORR and switches from the NR base station to the LTE base station, switching the VORR voice service to the LTE base station; a timer on the LTE base station is started, and the terminal starts to establish a voice bearer after being switched to the LTE base station; and if the timing time of the timer is less than a preset threshold value, not performing inter-system switching on the terminal. According to the invention, inter-system switching during voice establishment can be prevented, so that the problem of voice call failure when the terminal falls back to an LTE cell to establish a voice bearer is solved.

Description

Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a voice connection method, a voice connection system, an electronic device and a computer-readable storage medium. Background Art

[0002] VoNR (Voice over New Radio) uses the 5G access network, 5G core network and IMS (IP multiple subsystem) provided by the 5GSA (stand-alone) network to independently carry high-definition video services, and supports high-speed Internet access while making calls. However, not all NR (New Radio) base stations currently support VoNR; when a terminal initiates a VoNR service on a base station that does not support VoNR, the base station that does not support VoNR will fall back the terminal to the LTE (Long Term Evolution) cell, allowing the terminal to initiate a call in EPS (evolved packet system) Fallback mode. When a terminal establishes a voice bearer on LTE, if the NR cell triggers a handover at this time, the voice establishment will fail. Summary of the invention

[0003] In order to at least solve the technical problem in the prior art that voice establishment fails when a base station that does not support VoNR falls back to an LTE cell to establish a voice bearer, the present disclosure provides a voice connection method, system, electronic device and computer-readable storage medium, which can prevent inter-system switching from occurring during voice establishment, thereby solving the problem of voice call failure when the terminal falls back to an LTE cell to establish a voice bearer.

[0004] In a first aspect, the present disclosure provides a voice connection method, applied to an LTE base station, the method comprising:

[0005] When the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, starting a timer on the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station;

[0006] If the timing time of the timer is less than the preset threshold, the terminal will not be switched to another system.

[0007] Furthermore, the method further comprises:

[0008] After the timing time of the timer is greater than or equal to the preset threshold and the voice bearer of the terminal is successfully established on the LTE base station, if a base station of an NR cell that meets the switching threshold is measured, query whether the base station of the NR cell that meets the switching threshold supports the VoNR service;

[0009] If supported, the terminal is switched to the base station of the NR cell that meets the switching threshold;

[0010] If not supported, the terminal is kept on the LTE base station.

[0011] Furthermore, the preset threshold value ranges from 2 to 6 seconds.

[0012] Further, starting a timer on the LTE base station includes:

[0013] When the terminal successfully establishes RRC (Radio Resource Control) on the LTE base station, the timer is started to start timing.

[0014] In a second aspect, the present disclosure provides a voice connection system, the system comprising an LTE base station, the LTE base station comprising:

[0015] A timing module, which is configured to start a timer on the LTE base station when the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station;

[0016] The switching module is configured to not perform inter-system switching on the terminal if the timing time of the timer is less than a preset threshold.

[0017] Furthermore, the LTE base station further includes:

[0018] A query module, which is configured to query whether the base station of the NR cell that meets the switching threshold supports the VoNR service if a base station of the NR cell that meets the switching threshold is measured after the timing time of the timer is greater than or equal to the preset threshold and the terminal successfully establishes the voice bearer on the LTE base station;

[0019] The switching module is further configured to switch the terminal to the base station of the NR cell that meets the switching threshold if the base station of the NR cell that meets the switching threshold supports the VoNR service; and

[0020] If the base station of the NR cell that meets the switching threshold does not support the VoNR service, the terminal is kept on the LTE base station.

[0021] Furthermore, the preset threshold value ranges from 2 to 6 seconds.

[0022] Furthermore, the timing module is specifically configured as follows:

[0023] When the terminal successfully establishes RRC on the LTE base station, the timer is started to count.

[0024] In a third aspect, the present disclosure provides an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and when the processor runs the computer program stored in the memory, the processor executes the voice connection method as described in any one of the first aspects.

[0025] In a fourth aspect, the present disclosure provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the voice connection method described in any one of the above-mentioned first aspects is implemented.

[0026] Beneficial effects:

[0027] The voice connection method, system, electronic device and storage medium provided by the present disclosure start a timer on the LTE base station when the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station; if the timing time of the timer is less than a preset threshold, the terminal is not switched to another system. By setting a timer, the UE is prevented from being switched / redirected to the NR base station during the establishment of the voice bearer, thereby solving the problem of voice call failure when the terminal falls back to the LTE cell to establish a voice bearer. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A flow chart of a voice connection method provided in the first embodiment of the present disclosure;

[0029] Figure 2 A schematic diagram of a process of switching between different systems during establishment of a terminal voice bearer provided in the first embodiment of the present disclosure;

[0030] Figure 3 A flowchart of a voice connection method provided in Embodiment 2 of the present disclosure;

[0031] Figure 4 This is an architecture diagram of an LTE base station provided in Embodiment 3 of the present disclosure;

[0032] Figure 5 This is an architecture diagram of an electronic device provided in Embodiment 4 of the present disclosure. DETAILED DESCRIPTION

[0033] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments and drawings described herein are only used to explain the present invention, rather than to limit the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence; and, in the absence of conflict, the embodiments in the present disclosure and the features in the embodiments can be arbitrarily combined with each other.

[0035] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The singular forms of "a", "said" and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings.

[0036] In the subsequent description, the suffixes such as "module", "component" or "unit" used to represent elements are only used to facilitate the description of the present disclosure, and have no specific meanings. Therefore, "module", "component" or "unit" can be used in a mixed manner.

[0037] Currently, a voice call failure situation that occurs in the existing network is: the UE supports VoNR, the UE is attached to base station A, and base station A does not support VoNR; when the UE initiates a VoNR voice call, it is switched to the LTE base station by base station A, and a voice call is initiated in LTE. However, due to the NR switching threshold problem on the LTE base station, the UE is switched / redirected to the NR base station during the bearer establishment, resulting in the failure of the UE voice call.

[0038] The technical solution of the present invention and how the technical solution of the present invention solves the above-mentioned technical problems existing in the prior art are described in detail below with specific embodiments. It is understandable that in the embodiments of the present application, the execution subject can perform some or all of the steps in the embodiments of the present application, and these steps or operations are only examples. The embodiments of the present application can also perform other operations or deformations of various operations. In addition, each step can be performed in a different order presented in the embodiments of the present application, and it is possible not to perform all the operations in the embodiments of the present application. And, the following several specific embodiments can be combined with each other, and may not be repeated in some embodiments for the same or similar concepts or processes.

[0039] Figure 1 A voice connection method provided in Embodiment 1 of the present disclosure is applied to an LTE base station. The method includes:

[0040] Step S101: When the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, a timer on the LTE base station is started, wherein the terminal starts to establish a voice bearer after switching to the LTE base station;

[0041] Step S102: If the timing time of the timer is less than a preset threshold, no inter-system switching is performed on the terminal.

[0042] like Figure 2 As shown in the figure, when the UE supports VoNR voice service, but the NR base station gNB A where it is located does not support VoNR calls, the UE initiates VoNR voice service on the NR base station, and the NR base station triggers EPS FB to switch the UE to the LTE base station gNB C. The terminal initiates the SIP establishment process on the LTE base station. If the LTE base station measures the NR base station gNB B at this time, according to the switching threshold configured by the LTE base station gNB C, it will trigger the inter-system switching again, so that the terminal switches to the NR base station gNB B; at this time, the SIP signaling process is being established on the base station gNB C, and it has reached the 200OK for update stage. If the inter-system switching is sent at this time, the voice bearer in the LTE system cannot be established, resulting in call connection failure.

[0043] To solve this problem, when the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, a timer set on the LTE base station is started and a preset threshold T is set for the timer, T=ns, where n is an empirical value and should be greater than the average delay for establishing a VoLTE voice bearer on the LTE cell after falling back to the LTE cell, that is, the time from initiating the SIP process on the LTE cell to successfully establishing the call (invite is sent to 180ringing); and if the timer is less than the preset threshold, the terminal will not be switched to another system, and even if a NR cell with better quality is measured, the switching is prohibited, so that the terminal completes the voice bearer establishment before the timer reaches the preset threshold, that is, the UE will not be switched / redirected to the NR base station during the bearer establishment; thereby ensuring that the voice bearer can be established smoothly.

[0044] Furthermore, the method further comprises:

[0045] After the timing time of the timer is greater than or equal to the preset threshold and the voice bearer of the terminal is successfully established on the LTE base station, if a base station of an NR cell that meets the switching threshold is measured, query whether the base station of the NR cell that meets the switching threshold supports the VoNR service;

[0046] If supported, the terminal is switched to the base station of the NR cell that meets the switching threshold;

[0047] If not supported, the terminal is kept on the LTE base station.

[0048] When the timer timing is greater than or equal to the preset threshold, and the voice bearer of the terminal is successfully established on the LTE base station, switching between different systems will not cause service connection interruption. In order to improve call quality, if it is possible to switch to the VoNR voice service, switching between different systems can be performed. Therefore, if a base station of an NR cell that meets the switching threshold is measured, the LTE base station can query whether the base station of the NR cell that meets the switching threshold supports the VoNR service. If it does, the terminal will be switched to the base station of the NR cell that meets the switching threshold to implement the VoNR service call. If the base station of the NR cell does not support the VoNR service, the terminal will be kept on the LTE base station for voice calls.

[0049] Furthermore, the preset threshold value ranges from 2 to 6 seconds.

[0050] The value of the preset threshold is determined according to actual conditions to ensure that the VoLTE voice bearer is established.

[0051] Further, starting a timer on the LTE base station includes:

[0052] When the terminal successfully establishes RRC on the LTE base station, the timer is started to count.

[0053] If the RRC establishment of the terminal on the LTE base station is successful, the terminal has successfully switched to the LTE base station, and the timer is started to start timing.

[0054] In order to more clearly describe the technical solution of the present disclosure, the second embodiment of the present disclosure provides a voice connection method, where base station A is an NR base station but does not support VoNR calls; UE supports VoNR voice calls, UE initiates a VoNR call on NR, base station A undergoes a different system switch, and switches the UE to LTE base station C, such as Figure 3 As shown, the method includes:

[0055] Step S1: A timer is set on the LTE base station C, and the timing time is set to T, T=ns, and n is an empirical value, which should be greater than the average delay of establishing the VoLTE voice bearer on the LTE cell after falling back to the LTE cell, that is, the time from initiating the SIP process on the LTE cell to the successful call establishment;

[0056] Step S2: The timing starting point of t: the timing starts when the terminal successfully establishes RRC on the LTE base station C;

[0057] Step S3: When t<T, even if the LTE base station C measures a NR cell with better quality, it is forbidden to trigger the handover;

[0058] Step S4: When t≥T, and the terminal has successfully established a voice bearer on LTE base station C, if the NR cell gNB B is measured, LTE base station C requests to query whether gNB B supports VoNR services. If supported, the terminal can be switched to gNB B. If not, the terminal always remains connected to LTE base station C.

[0059] Embodiment 3 of the present disclosure provides a voice connection system, the system comprising an LTE base station, such as Figure 4 As shown, the LTE base station includes:

[0060] A timing module 11, which is configured to start a timer on the LTE base station when the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station;

[0061] The switching module 12 is configured to not perform inter-system switching on the terminal if the timing time of the timer is less than a preset threshold.

[0062] Furthermore, the LTE base station further includes:

[0063] A query module 13 is configured to query whether the base station of the NR cell that meets the switching threshold supports the VoNR service if a base station of the NR cell that meets the switching threshold is measured after the timing time of the timer is greater than or equal to the preset threshold and the terminal successfully establishes the voice bearer on the LTE base station;

[0064] The switching module is further configured to switch the terminal to the base station of the NR cell that meets the switching threshold if the base station of the NR cell that meets the switching threshold supports the VoNR service; and

[0065] If the base station of the NR cell that meets the switching threshold does not support the VoNR service, the terminal is kept on the LTE base station.

[0066] Furthermore, the preset threshold value ranges from 2 to 6 seconds.

[0067] Furthermore, the timing module 11 is specifically configured as follows:

[0068] When the terminal successfully establishes RRC on the LTE base station, the timer is started to count.

[0069] The voice connection system of the disclosed embodiment is used to implement the voice connection method in method embodiment 1 and embodiment 2, so the description is relatively simple. For details, please refer to the relevant description in the previous method embodiment 1 and embodiment 2, which will not be repeated here.

[0070] In addition, if Figure 5 As shown, the fourth embodiment of the present disclosure further provides an electronic device, including a memory 100 and a processor 200, wherein the memory 100 stores a computer program, and when the processor 200 runs the computer program stored in the memory 100, the processor 200 executes the above-mentioned various possible methods.

[0071] The memory 100 is connected to the processor 200. The memory 100 may be a flash memory, a read-only memory or other memory, and the processor 200 may be a central processing unit or a single-chip microcomputer.

[0072] In addition, an embodiment of the present disclosure further provides a computer-readable storage medium, on which a computer program is stored, and the computer program is executed by a processor to perform the above-mentioned various possible methods.

[0073] The computer-readable storage medium includes volatile or non-volatile, removable or non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, computer program modules or other data). Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically Erasable Programmable read only memory), flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), Digital Video Disc (DVD) or other optical disk storage, magnetic cassettes, magnetic tapes, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer.

[0074] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A voice connection method, characterized in that: Applied to a long term evolution LTE base station, the method comprises: When the terminal initiates a VoNR voice service on a new air interface NR base station that does not support the new air interface to bear voice VoNR, and switches from the NR base station to the LTE base station, starting a timer on the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station; If the timing time of the timer is less than the preset threshold, the terminal will not be switched to another system.

2. The method according to claim 1, characterized in that The method further comprises: After the timing time of the timer is greater than or equal to the preset threshold and the voice bearer of the terminal is successfully established on the LTE base station, if a base station of an NR cell that meets the switching threshold is measured, query whether the base station of the NR cell that meets the switching threshold supports the VoNR service; If supported, the terminal is switched to the base station of the NR cell that meets the switching threshold; If not supported, the terminal is kept on the LTE base station.

3. The method according to claim 1 or 2, characterized in that: The preset threshold value ranges from 2 to 6 seconds.

4. The method according to claim 1 or 2, characterized in that: The starting a timer on the LTE base station includes: When the terminal successfully establishes the radio resource control RRC on the LTE base station, the timer is started to start timing.

5. A voice connection system, characterized in that: The system includes an LTE base station, and the LTE base station includes: A timing module, which is configured to start a timer on the LTE base station when the terminal initiates a VoNR voice service on an NR base station that does not support VoNR and switches from the NR base station to the LTE base station, wherein the terminal starts to establish a voice bearer after switching to the LTE base station; The switching module is configured to not perform inter-system switching on the terminal if the timing time of the timer is less than a preset threshold.

6. The system according to claim 5, characterized in that The LTE base station also includes: A query module, which is configured to query whether the base station of the NR cell that meets the switching threshold supports the VoNR service if a base station of the NR cell that meets the switching threshold is measured after the timing time of the timer is greater than or equal to the preset threshold and the terminal successfully establishes the voice bearer on the LTE base station; The switching module is further configured to switch the terminal to the base station of the NR cell that meets the switching threshold if the base station of the NR cell that meets the switching threshold supports the VoNR service; and If the base station of the NR cell that meets the switching threshold does not support the VoNR service, the terminal is kept on the LTE base station.

7. The system according to claim 5 or 6, characterized in that: The preset threshold value ranges from 2 to 6 seconds.

8. The system according to claim 5 or 6, characterized in that: The timing module is specifically configured as follows: When the terminal successfully establishes RRC on the LTE base station, the timer is started to count.

9. An electronic device, characterized in that: The method comprises a memory and a processor, wherein a computer program is stored in the memory, and when the processor runs the computer program stored in the memory, the processor executes the voice connection method according to any one of claims 1 to 4.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the voice connection method according to any one of claims 1 to 4 is implemented.

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