Method and control device for selecting controlled device

• US 9,715,824 B2
• Filed: 06/13/2014
• Issued: 07/25/2017
• Est. Priority Date: 06/13/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Kuang, Yunsheng
• Primary Examiner(s): BLOUIN, MARK S
• Application Number:
  US15/033,092
• Publication Number:
  US 20160267779A1
• Time in Patent Office: 1,138 Days
• Field of Search: 340 27
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 2201/32 Remote control based on movements, attitude of remote control device
• CPC Class Codes: G08C 2201/71 Directional beams
• CPC Class Codes: G08C 25/00 Arrangements for preventing or correcting errors; Monitoring arrangements
• CPC Class Codes: H04B 17/318 Received signal strength

Abstract

The embodiments of the present invention provide a method which includes: acquiring, by a control device, a first signal received strength of data that is received by each controlled device of at least one controlled device in a direct path mode, and a second signal received strength of data that is received by each controlled device of the at least one controlled device in a multipath mode; calculating a ratio of the first signal received strength to the second signal received strength of each controlled device, to obtain a signal received strength ratio of each controlled device; determining, according to the signal received strength ratio of each controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device; and determining a target controlled device to which the control device directs, and displaying a control interface of the target controlled device.

Claims

1. A method for selecting a controlled device, applied to a wireless network that comprises one control device and at least one controlled device, wherein the control device executes the following method:

acquiring a first signal received strength in a direct path mode and a second signal received strength in a multipath mode of each of the at least one controlled device;

obtaining a signal received strength ratio of each controlled device according to the first signal received strength and the second signal received strength of each of the at least one controlled device;

determining, according to the signal received strength ratio of each of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to a corresponding controlled device; and

determining a target controlled device from the controlled device to which the control device directs, and displaying a control interface of the target controlled device on the control device.

2. The method for selecting a controlled device according to claim 1, wherein before the acquiring a first signal received strength in a direct path mode and a second signal received strength in a multipath mode of each of the at least one controlled device, the method further comprises:

acquiring a current wireless channel environment model of the wireless network;

generating, according to the current wireless channel environment model, a tap coefficient in a direct path mode and a tap coefficient in a multipath mode of a channel equalizer of each of the at least one controlled device in the wireless network; and

separately sending the tap coefficient in a direct path mode and the tap coefficient in a multipath mode of the channel equalizer of each of the at least one controlled device to a corresponding controlled device, so that each controlled device obtains the first signal received strength through calculation according to the tap coefficient in a direct path mode of the channel equalizer of the controlled device and obtains the second signal received strength through calculation according to the tap coefficient in a multipath mode of the channel equalizer of the controlled device.

3. The method for selecting a controlled device according to claim 1, wherein the acquiring a first signal received strength in a direct path mode of device of the at least one controlled device comprises:

broadcasting data to the at least one controlled device, and sending a request packet to each of the at least one controlled device; and

receiving a response packet sent by each of the at least one controlled device, wherein the response packet comprises the first signal received strength of the controlled device.

4. The method for selecting a controlled device according to claim 1, wherein the acquiring a second signal received strength in a multipath mode of each of the at least one controlled device comprises:

broadcasting data to the at least one controlled device, and sending a request packet to each of the at least one controlled device; and

receiving a response packet sent by each of the at least one controlled device, wherein the response packet comprises the second signal received strength of the controlled device.

5. The method for selecting a controlled device according to claim 1, wherein the acquiring a first signal received strength in a direct path mode of each of the at least one controlled device comprises:

broadcasting data to the at least one controlled device for multiple times; and

acquiring multiple signal received strengths corresponding to a direct path mode of each controlled device, and performing weighting processing on the multiple signal received strengths corresponding to the multipath mode of each controlled device, to obtain the first signal received strength; and

the acquiring a second signal received strength in a multipath mode of each of the at least one controlled device comprises;

broadcasting data to the at least one controlled device for multiple times; and

acquiring multiple signal received strengths corresponding to a multipath mode of each controlled device, and performing weighting processing on the multiple signal received strengths corresponding to the direct path mode of each controlled device, to obtain the second signal received strength.

6. The method for selecting a controlled device according to claim 1, wherein

the signal received strength ratio of each controlled device is a ratio of the first signal received strength to the second signal received strength of each of the at least one controlled device;

and the determining, according to the signal received strength ratio of each of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device comprises;

when the signal received strength ratio of each controlled device is greater than the preset signal received strength ratio corresponding to the controlled device, determining that the control device directs to the controlled device;

otherwise, determining that the control device does not direct to the controlled device;

or

the signal received strength ratio of each controlled device is a ratio of the second signal received strength to the first signal received strength of each of the at least one controlled device; and

the determining, according to the signal received strength ratio of each of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device comprises;

when the signal received strength ratio of each controlled device is less than the preset signal received strength ratio corresponding to the controlled device, determining that the control device directs to the controlled device;

otherwise, determining that the control device does not direct to the controlled device.

7. The method for selecting a controlled device according to claim 1, wherein the determining a target controlled device from the controlled device to which the control device directs comprises:

when it is determined that the control device directs to only one controlled device, determining that the directed to controlled device is the target controlled device;

when it is determined that the control device directs to two controlled devices, sending prompt information to instruct a user to select the target controlled device, and selecting one controlled device from the two controlled devices as the target controlled device according to a processing instruction of the user; and

when it is determined that the control device directs to more than two controlled devices, re-executing the method for selecting a controlled device, or sending prompt information to instruct a user to select the target controlled device, and selecting one controlled device from the more than two controlled devices as the target controlled device according to a processing instruction of the user.

8. A control device for selecting a controlled device, applied to a wireless network that comprises one control device and at least one controlled device, wherein the control device comprises a short range wireless communications chip, a central processor, a display component, and an interface, and the short range wireless communications chip communicates with the central processor by using a bus and the interface, wherein

the short range wireless communications chip is configured to acquire a first signal received strength in a direct path mode and a second signal received strength in a multipath mode of each of the at least one controlled device;

the central processor is configured to obtain a signal received strength ratio of each controlled device according to the first signal received strength and the second signal received strength of each of the at least one controlled device;

the central processor is configured to determine, according to the signal received strength ratio of each of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device;

the central processor is configured to determine which controlled device to which the control device directs is a target controlled device; and

the display component is configured to display a control interface of the target controlled device.

9. The control device for selecting a controlled device according to claim 8, wherein before acquiring the first signal received strength in a direct path mode and the second signal received strength in a multipath mode of each of the at least one controlled device, the short range wireless communications chip is further configured to acquire a current wireless channel environment model of the wireless network;

the central processor is configured to generate, according to the current wireless channel environment model, a tap coefficient in a direct path mode and a tap coefficient in a multipath mode of a channel equalizer of each of the at least one controlled device in the wireless network; and

the short range wireless communications chip is configured to separately send the tap coefficient in a direct path mode and the tap coefficient in a multipath mode of the channel equalizer of each of the at least one controlled device to a corresponding controlled device, so that each controlled device obtains the first signal received strength through calculation according to the tap coefficient in a direct path mode of the channel equalizer of the controlled device and obtains the second signal received strength through calculation according to the tap coefficient in a multipath mode of the channel equalizer of the controlled device.

10. The control device for selecting a controlled device according to claim 8, wherein that the short range wireless communications chip is configured to acquire a first signal received strength in a direct path mode of each of the at least one controlled device comprises:

the short range wireless communications chip is configured to broadcast data to the at least one controlled device, send a request packet to the at least one controlled device, and receive a response packet sent by each of the at least one controlled device, wherein the response packet comprises the first signal received strength of the controlled device.

11. The control device for selecting a controlled device according to claim 8, wherein that the short range wireless communications chip is configured to acquire a second signal received strength in a multipath mode of each of the at least one controlled device comprises:

the short range wireless communications chip is configured to broadcast data to the at least one controlled device, send a request packet to the at least one controlled device, and receive a response packet sent by each of the at least one controlled device, wherein the response packet comprises the second signal received strength of the controlled device.

12. The control device for selecting a controlled device according to claim 8, wherein that the short range wireless communications chip is configured to acquire a first signal received strength in a direct path mode of each of the at least one controlled device comprises:

the short range wireless communications chip is configured to broadcast data to the at least one controlled device multiple times, acquire multiple signal received strengths corresponding to a direct path mode of each controlled device, and perform weighting processing on the multiple signal received strengths corresponding to the direct path mode of each controlled device, to obtain the first signal received strength; and

that the short range wireless communications chip is configured to acquire a second signal received strength in a multipath mode of each controlled device of the at least one controlled device comprises;

the short range wireless communications chip is configured to broadcast data to the at least one controlled device multiple times, acquire multiple signal received strengths corresponding to a multipath mode of each controlled device, and perform weighting processing on the multiple signal received strengths corresponding to the multipath mode of each controlled device, to obtain the second signal received strength.

13. The control device for selecting a controlled device according to claim 8, wherein the signal received strength ratio of each controlled device is a ratio of the first signal received strength to the second signal received strength of each controlled device of the at least one controlled device;

and that the central processor is configured to determine, according to the signal received strength ratio of each controlled device of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device comprises;

when the signal received strength ratio of each controlled device is greater than the preset signal received strength ratio corresponding to the controlled device, determining that the control device directs to the controlled device;

otherwise, determining that the control device does not direct to the controlled device;

or

the signal received strength ratio of each controlled device is a ratio of the second signal received strength to the first signal received strength of each controlled device of the at least one controlled device; and

that the central processor is configured to determine, according to the signal received strength ratio of each controlled device of the at least one controlled device and a preset signal received strength ratio corresponding to the controlled device, whether the control device directs to the corresponding controlled device comprises;

when the signal received strength ratio of each controlled device is less than the preset signal received strength ratio corresponding to the controlled device, determining that the control device directs to the controlled device;

otherwise, determining that the control device does not direct to the controlled device.

14. The control device for selecting a controlled device according to claim 8, wherein that the central processor is configured to determine a target controlled device from the controlled device to which the control device directs comprises:

when it is determined that the control device directs to only one controlled device, determining that the directed to controlled device is the target controlled device;

or

when it is determined that the control device directs to two controlled devices, sending prompt information to instruct a user to select the target controlled device, and selecting one controlled device from the two controlled devices as the target controlled device according to a processing instruction of the user;

or

when it is determined that the control device directs to more than two controlled devices, re-executing the method for selecting a controlled device, or sending prompt information to instruct a user to select the target controlled device, and selecting one controlled device from the more than two controlled devices as the target controlled device according to a processing instruction of the user.