Patent ID: 11923935
Assignee: ZTE CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 7:
8. A real-time antenna switching method for a vehicle-mounted Telematics BOX (TBOX), applied to a vehicle-mounted TBOX, wherein:
the vehicle-mounted TBOX comprises:
a Microcontroller Unit (MCU) control device, an antenna device and a measurement device, wherein:
the measurement device is configured to detect an incident wave power and a reflected wave power when the antenna device is in operation, and determine a real-time standing wave ratio at a position where the antenna device locates;
the MCU control device is configured to communicate with the antenna device and the measurement device, determine an operation state of the antenna device according to the standing wave ratio, and send a control instruction to the antenna device; and
the antenna device is configured to switch an internal antenna of the antenna device in real time according to the control instruction;

the real-time antenna switching method comprises:
detecting, when the antenna device is in operation, an incident wave power and a reflected wave power, and determining a real-time standing wave ratio at a position where the antenna device locates;
determining an actual operation state of the antenna device according to the standing wave ratio, and sending a control instruction to the antenna device to switch an internal antenna in real time; and
switching an internal antenna of the antenna device in real time, by the antenna device, according to the control instruction,
wherein determining an actual operation state of the antenna device according to the standing wave ratio and sending a control instruction to the antenna device to perform real-time switching of an internal antenna comprises:
determining an operation state of the antenna device according to the standing wave ratio, judging that the antenna device operates abnormally in response to the standing wave ratio being greater than a preset threshold, and sending a control instruction to the antenna device to perform real-time switching of an internal antenna; and
judging that the antenna device operates normally in response to the standing wave ratio being less than the preset threshold, and sending a control instruction to the antenna device so as to not switch an internal antenna.