Call switching method, terminal device, and storage medium

Patent metadata

Field	Value
Publication number	US-10819850-B2
Application number	US-201616097159-A
Country	US
Kind code	B2
Filing date	Apr 29, 2016
Priority date	Apr 29, 2016
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A call switching method includes: when a first terminal device detects an input operation that is of initiating a call request to a second terminal device, or when a first terminal device receives a first call request that is initiated by a second terminal device by using a second-type communications network, detecting whether both the first terminal device and the second terminal device are in a first-type communications network; and when the first terminal device detects that both the first terminal device and the second terminal device are in the first-type communications network, initiating a second call request to the second terminal device by using the first-type communications network, or sending first prompt information to the second terminal device.

First claim

What is claimed is:

1. A call switching method comprising:
when a first terminal device detects an input operation for initiating a call request to a second terminal device, or when the first terminal device receives a first call request that is initiated by the second terminal device using a second-type communications network, detecting, by the first terminal device, whether both the first terminal device and the second terminal device are in a first-type communications network, wherein detecting whether both the first terminal device and the second terminal device are in a first-type communications network comprises obtaining, by the first terminal device, at least one network type of a communications network to which the second terminal device is currently connected;
when the first terminal device detects that both the first terminal device and the second terminal device are in the first-type communications network:
initiating, by the first terminal device, a second call request to the second terminal device using the first-type communications network, or sending, by the first terminal device, first prompt information to the second terminal device, wherein the first prompt information is used to indicate that both the first terminal device and the second terminal device are in the first-type communications network, wherein the first-type communications network is different from the second-type communications network; and

when the second call request is a video call request, after the second call request is responded, the method further comprises:
determining, by the first terminal device, whether signal quality of the first-type communications network meets a preset condition;
when the signal quality of the first-type communications network does not meet the preset condition, initiating, by the first terminal device, a voice call request to the second terminal device by using the second-type communications network; and
after the voice call request is responded, sending and receiving, by the first terminal device, audio data of the video call by using the second-type communications network, and sending and receiving image data of the video call by using the first-type communications network.

2. The method of claim 1 , wherein the method further comprises:
when the first terminal device detects that both the first terminal device and the second terminal device are not in the first-type communications network, initiating, by the first terminal device, a third call request to the second terminal device using the second-type communications network.

3. The method of claim 1 , wherein the method further comprises:
rejecting, by the first terminal device, the first call request when the first terminal device detects that both the first terminal device and the second terminal device are in the first-type communications network.

4. The method of claim 1 , further comprising initiating the second call request, wherein before the initiating the second call request, the method further comprises:
determining, by the first terminal device, that signal quality of the first-type communications network meets a preset condition.

5. The method of claim 1 , wherein the detecting further comprises:
determining, by the first terminal device, that the first terminal device is in the first-type communications network;
sending, by the first terminal device, a query to a server, wherein the query requests a network type of a communications network to which the second terminal device is currently connected, and the server records the network type of the communications network to which the second terminal device is currently connected;
receiving, by the first terminal device, a query result sent by the server, wherein the query result comprises the network type of the communications network to which the second terminal device is currently connected; and
detecting, by the first terminal device according to the query result, whether the second terminal device is in the first-type communications network.

6. The method of claim 1 , wherein the detecting comprises:
receiving, by the first terminal device, second prompt information sent by the second terminal device, wherein the second prompt information comprises a network type of a communications network to which the second terminal device is currently connected; and
detecting, by the first terminal device according to a network type of a communications network to which the first terminal device is currently connected and the second prompt information, whether both the first terminal device and the second terminal device are in the first-type communications network.

7. The method of claim 1 , wherein the detecting comprises:
receiving, by the first terminal device, third prompt information sent by the second terminal device, wherein the third prompt information is used to indicate whether both the first terminal device and the second terminal device are in the first-type communications network; and
determining, by the first terminal device according to the third prompt information, whether both the first terminal device and the second terminal device are in the first-type communications network.

8. The method of claim 1 , wherein after the voice call request is responded, the method further comprises:
determining, by the first terminal device, whether the signal quality of the first-type communications network meets the preset condition; and
when the signal quality of the first-type communications network meets the preset condition, canceling, by the first terminal device, a voice call that is initiated to the second terminal device using the second-type communications network, and sending and receiving the audio data and the image data of the video call using the first-type communications network.

9. The method of claim 1 , wherein
the first terminal device has a first account and a second account, and the second terminal device has a third account and a fourth account;
the first account is associated with the second account, and the third account is associated with the fourth account;
the first account and the third account may establish a call request using the second-type communications network; and
the second account and the fourth account may establish a call request using the first-type communications network.

10. The method of claim 9 , wherein the first account and the second account are mobile numbers, the third account is a unique identifier of the first terminal device, and the fourth account is a unique identifier of the second terminal device.

11. The method of claim 1 , wherein the first-type communications network is a Long Term Evolution (LTE) network or a Wireless Fidelity (WiFi) network.

12. The method of claim 1 , wherein the second-type communications network is a Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA) network.

13. A terminal device comprising:
a processor; and
a non-transitory computer-readable storage medium coupled to the processor and storing programming instructions for execution by the processor, the programming instructions instruct the processor to:
detect whether both the terminal device and a second terminal device are in a first-type communications network when the terminal device detects an input operation for initiating a call request to the second terminal device, or when the terminal device receives a first call request that is initiated by the second terminal device using a second-type communications network, wherein detecting whether both the first terminal device and the second terminal device are in a first-type communic

Assignees

• Huawei Tech Co Ltd

Inventors

• Wang Zaishang
• Chen Lei
• Su Junfeng

Classifications

• H04W36/00224

  between packet switched [PS] and circuit switched [CS] network technologies, e.g. circuit switched fallback [CSFB] · CPC title

• H04W36/14

  Reselecting a network or an air interface · CPC title

• H04W48/18 Primary

  Selecting a network or a communication service · CPC title

• H04W76/14

  Direct-mode setup · CPC title

• H04W76/10

  Connection setup · CPC title