Device control method and system, and related apparatus

1. A device control system, comprising a first mobile terminal and a second mobile terminal, wherein

the first mobile terminal is configured to:

after enabling a wireless hotspot function, establish a wireless fidelity (Wi-Fi) connection to the second mobile terminal, and transmit data to the second mobile terminal in a multiple-input multiple-output (MIMO) Wi-Fi antenna working mode in which a Wi-Fi antenna working mode is set to MIMO;

monitor a remaining battery level and/or a device temperature of the first mobile terminal; and

upon determining that the remaining battery level is less than a first battery level threshold and the device temperature is greater than a first temperature threshold, simultaneously execute low power consumption operations including: 1) switching the Wi-Fi antenna working mode to single-input single-output (SISO), 2) limiting a maximum forwarding rate of a transmission control protocol (TCP) packet or a user datagram protocol (UDP) packet to a first rate, and 3) stopping responding to a probe request, and

the second mobile terminal is configured to access the internet by using the first mobile terminal connected through Wi-Fi.

2. The system according to claim 1 , wherein the first mobile terminal is further configured to:

upon determining that a quantity of terminal devices connected to the first mobile terminal through Wi-Fi reaches a specified value, stop responding to a probe request.

3. The system according to claim 1 , wherein the first mobile terminal is further configured to:

upon determining that the remaining battery level is less than a second battery level threshold, limit the maximum forwarding rate of the TCP packet or the UDP packet to a second rate, wherein the second battery level threshold is less than the first battery level threshold, and the second rate is less than the first rate.

4. The system according to claim 1 , wherein the first mobile terminal is further configured to:

upon determining that the device temperature is greater than a second temperature threshold, limit the maximum forwarding rate of the TCP packet or the UDP packet to a second rate, wherein the second temperature threshold is greater than the first temperature threshold.

5. The system according to claim 1 , wherein the first mobile terminal is further configured to:

upon detecting that a preset high power consumption application is running, switch the Wi-Fi antenna working mode to SISO, limit the maximum forwarding rate of the TCP packet or the UDP packet to the first rate, and/or stop responding to the probe request.

6. The system according to claim 1 , wherein the first mobile terminal is further configured to:

before switching the Wi-Fi antenna working mode to SISO, send a first switching request to the second mobile terminal; and

the second mobile terminal is further configured to switch the Wi-Fi antenna working mode to SISO in response to the first switching request.

7. The system according to claim 2 , wherein the specified value comprises a maximum access quantity supported by a Wi-Fi chip of the first mobile terminal.

8. A chip system, comprising a processor and a wireless fidelity (Wi-Fi) chip, wherein the chip system is disposed in a first mobile terminal,

the Wi-Fi chip is configured to after a wireless hotspot function is enabled, establish a wireless fidelity (Wi-Fi) connection to a second mobile terminal, and transmit data to the second mobile terminal in a multiple-input multiple-output (MIMO) Wi-Fi antenna working mode in which a Wi-Fi antenna working mode is set to MIMO,

the processor is configured to:

after the wireless hotspot function is enabled, indicate a power management module to monitor a remaining battery level of the first mobile terminal, and/or indicate a temperature sensor to monitor a device temperature of the first mobile terminal; and

upon determining that the remaining battery level is less than a first battery level threshold and the device temperature is greater than a first device temperature threshold, send a first instruction to the Wi-Fi chip, and

the Wi-Fi chip is further configured to: in response to the first instruction, simultaneously execute low power consumption operations including: 1) switching the Wi-Fi antenna working mode to single-input single-output (SISO), 2) limiting a maximum forwarding rate of a TCP packet or a UDP packet to a first rate, and 3) stopping responding to a probe request.

9. The chip system according to claim 8 , wherein the processor is further configured to:

upon determining that a quantity of terminal devices connected to the first mobile terminal through Wi-Fi reaches a specified value, send a second instruction to the Wi-Fi chip, and

the Wi-Fi chip is further configured to stop responding to the probe request in response to the second instruction.

10. The chip system according to claim 8 , wherein the processor is further configured to:

upon determining that the remaining battery level is less than a second battery level threshold, send a third instruction to the Wi-Fi chip, and

the Wi-Fi chip is further configured to limit the maximum forwarding rate of the TCP packet or the UDP packet to a second rate in response to the third instruction, wherein the second battery level threshold is less than the first battery level threshold, and the second rate is less than the first rate.

11. The chip system according to claim 8 , wherein the processor is further configured to:

upon determining that the device temperature is greater than a second temperature threshold, send a fourth instruction to the Wi-Fi chip, and

the Wi-Fi chip is further configured to limit the maximum forwarding rate of the TCP packet or the UDP packet to a second rate in response to the fourth instruction, wherein the second temperature threshold is greater than the first device temperature threshold, and the second rate is less than the first rate.

12. The chip system according to claim 8 , wherein the processor is further configured to:

upon detecting that a preset high power consumption application is running, send a fifth instruction to the Wi-Fi chip; and

the Wi-Fi chip is further configured to: in response to the fifth instruction, switch the Wi-Fi antenna working mode to SISO, limit the maximum forwarding rate of the TCP packet or the UDP packet to the first rate, and/or stop responding to the probe request.

13. The chip system according to claim 8 , wherein the processor is further configured to:

before the Wi-Fi chip switches the Wi-Fi antenna working mode to SISO, send a sixth instruction to the Wi-Fi chip, and

the Wi-Fi chip is further configured to send a first switching request to the second mobile terminal in response to the sixth instruction, wherein the first switching request requests the second mobile terminal to switch the Wi-Fi antenna working mode to SISO.

14. The chip system according to claim 9 , wherein the specified value comprises a maximum access quantity supported by the Wi-Fi chip.

15. A device control method, comprising:

after enabling a wireless hotspot function, establishing, by a first mobile terminal, a wireless fidelity (Wi-Fi) connection to a second mobile terminal, and transmitting data to the second mobile terminal in a multiple-input multiple-output (MIMO) Wi-Fi antenna working mode in which a Wi-Fi antenna working mode is set to MIMO, wherein the second mobile terminal is configured to access the internet by using the first mobile terminal connected through Wi-Fi;

monitoring, by the first mobile terminal, a remaining battery level and/or a device temperature of the first mobile terminal; and

upon determining that the remaining battery level is less than a first battery level threshold and the device temperature is greater than a first temperature threshold, simultaneously executing low power consumption operations including: 1) switching, by the first mobile terminal,

the Wi-Fi antenna working mode to single-input single-output (SISO), 2) limiting a maximum forwarding rate of a transmission control protocol (TCP) packet or a user datagram protocol (UDP) packet to a first rate, and 3) stopping responding to a probe request.

16. The method according to claim 15 , further comprising:

upon determining that a quantity of terminal devices connected to the first mobile terminal through Wi-Fi reaches a specified value, stopping responding, by the first mobile terminal, to the probe request.

17. The method according to claim 15 , further comprising:

upon determining that the remaining battery level is less than a second battery level threshold, limiting, by the first mobile terminal, the maximum forwarding rate of the TCP packet or the UDP packet to a second rate, wherein the second battery level threshold is less than the first battery level threshold, and the second rate is less than the first rate.

18. The method according to claim 15 , further comprising:

upon determining that the device temperature is greater than a second temperature threshold, limiting, by the first mobile terminal, the maximum forwarding rate of the TCP packet or the UDP packet to a second rate, wherein the second temperature threshold is greater than the first temperature threshold.

19. The method according to claim 15 , further comprising:

upon determining that the first mobile terminal detects that a preset high power consumption application is running, switching, by the first mobile terminal, the Wi-Fi antenna working mode to SISO, limiting the maximum forwarding rate of the TCP packet or the UDP packet to the first rate, and/or stopping responding to the probe request.

20. The method according to claim 15 , further comprising:

before switching the Wi-Fi antenna working mode to SISO, sending, by the first mobile terminal, a first switching request to the second mobile terminal, wherein the first switching request requests the second mobile terminal to switch the Wi-Fi antenna working mode to SISO.