CN118075526A - Multi-device cooperative UWB communication pairing method - Google Patents

Abstract

The present invention discloses a UWB communication pairing method for multi-device collaboration, wherein the device comprises a control terminal and a plurality of controlled terminals, wherein the distance between the control terminal and the controlled terminals is determined by the UWB technology, so that the control terminal selects the controlled terminal closest to itself for pairing according to the distance, and during the communication process, a delay time generated by a delay strategy is adopted to make the response time of each controlled terminal different, thereby avoiding conflicts when the control terminal receives information from the controlled terminals.

Description

A multi-device collaborative UWB communication pairing method

Technical Field

The present invention relates to the field of communications, and in particular to a multi-device collaborative UWB communication pairing method.

Background technique

In modern home entertainment systems, ultra-wideband technology is widely used in communication between remote controls and devices such as TVs due to its high-precision distance and angle measurement capabilities. However, with the increase in such devices in the home, traditional communication methods face problems such as data collision and pairing confusion, which seriously affects user experience and device reliability.

Summary of the invention

The main purpose of the present invention is to provide a multi-device collaborative UWB communication pairing method that can effectively solve the communication conflicts and pairing problems between multiple remote controllers and multiple TV devices, by adopting advanced signal processing algorithms and device identification mechanisms to ensure the accuracy of data transmission and the responsiveness of devices.

The present invention proposes a multi-device collaborative UWB communication pairing method, including a control terminal and multiple controlled terminals;

The control terminal of the device broadcasts an initiation frame and records the sending time;

After receiving the initiating frame, the controlled end generates a delay time through a preset delay strategy, and sends a reply frame including the delay time to the control end after the delay time. The delay time can make the response time of each controlled end different, thereby avoiding conflicts when the control end receives the reply frame;

The control end records the receiving time when receiving the reply frame, calculates the distance between the control end and each controlled end through the sending time, the delay time and the receiving time, and pairs the control end with the controlled end at the closest distance.

Preferably, the delay time is composed of a fixed time t0 and a byte value t1 set in advance by the MAC address of the controlled end.

Preferably, the reply frame includes the MAC address of the controlled end, and the pairing frame sent by the controlling end to the controlled end after receiving the reply frame includes the MAC address of the controlling end and the MAC address of the controlled end.

Preferably, the calculation formula for distance calculation is distance d = (receiving time-sending time-delay time)*C/2, wherein C is the speed of light.

The beneficial effects of the multi-device collaborative UWB communication pairing method of the present invention are:

1. After receiving the initiation frame, the controlled end generates a delay time through a preset delay strategy, and replies to the control end after the delay time, so that the response time of each controlled end can be different, thereby avoiding conflicts when the control end receives the reply frame.

2. By using UWB technology to calculate the distance between the control end and the controlled end, the control end closest to the control end can be found, thereby improving the accuracy of judgment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a flowchart of a multi-device collaborative UWB communication pairing method of the present invention;

The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

1 , an embodiment of a multi-device collaborative UWB communication pairing method of the present invention is proposed:

A multi-device collaborative UWB communication pairing method, the device includes a control end and multiple controlled ends. In this embodiment, the control end is a remote control and the controlled end is a television. The specific process is as follows:

1) Remote control pairing activation: the user presses a specific combination of buttons on the remote control to cause the remote control to send an initiation frame, which contains the frame type, frame sequence number and remote control MAC address, and records the sending time tTxblink.

2) After the remote control completes sending, it enters the receiving state and sets the receiving timeout tTimeout.

3) When the TV is turned on and not connected to the remote control, it will continue to listen to the initiation frame sent by the remote control. When the TV receives the initiation frame, it records the receiving time tRxblink. The TV generates a delay time tReply according to the preset delay strategy, and sends a reply frame to the remote control after the delay time tReply. The reply frame contains the frame type, frame sequence number, delay time tReply, remote control MAC address and TV MAC address. By adopting the delay strategy to generate the delay time tReply, the response time of each TV can be different, thereby avoiding conflicts;

The delay time tReply is composed of the preset fixed value t0 plus the value t1 of the last byte of the TV's MAC address. In actual use, since the value t1 of the last byte of the TV's MAC address has a 1 in 256 probability of being the same, if a conflict occurs, pairing will fail. At this time, the remote control will be re-paired or the TV will change the selection of t1 and then re-pair.

4) After the TV has finished transmitting, it enters the receiving state.

5) After the remote control receives the reply frame from the TV, it records the receiving time tRxResponse, and first compares the remote control MAC address in the reply frame with its own MAC address to see if they match, thereby filtering out reply frames that do not belong to it. If the frame belongs to it, it records the TV MAC address in the frame, and calculates the distance d between the remote control and the TV using the distance calculation formula;

Calculated as follows: , where C is the speed of light.

6) The remote control continues receiving within the receiving time tTimeout and repeats step 5 to receive all possible reply frames from the TV.

7) After the receiving time tTimeout is exceeded, the MAC address of the nearest TV is found by comparing the distance d between each TV and the remote control. The remote control sends a pairing frame, which contains information such as the frame type, frame sequence number, MAC address of the remote control, and MAC address of the TV to be paired.

8) After receiving the pairing frame, the TV compares the MAC address of the TV in the pairing frame with its own MAC address to see if they are consistent. If they are consistent, the two are paired and the remote control MAC address is written to its own flash. Subsequently, the TV only responds to non-pairing frames initiated by the paired remote control MAC address.

The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims (4)

1. A multi-device collaborative UWB communication pairing method, characterized in that: The device includes a control terminal and a plurality of controlled terminals; The control terminal broadcasts the initiation frame and records the sending time; After receiving the initiating frame, the controlled end generates a delay time through a preset delay strategy, and sends a reply frame including the delay time to the controlling end after the delay time. The delay time can make the response time of each controlled end different, thereby avoiding conflicts when the controlling end receives the reply frame; The control end records the receiving time when receiving the reply frame, calculates the distance between the control end and each controlled end through the sending time, the delay time and the receiving time, and pairs the control end with the controlled end at the closest distance. 2. The multi-device collaborative UWB communication pairing method according to claim 1 is characterized in that the delay time is composed of a fixed time t0 and a byte value t1 set in advance by the MAC address of the controlled end. 3. According to the multi-device collaborative UWB communication pairing method according to claim 1, it is characterized in that the reply frame contains the MAC address of the controlled end, and the pairing frame sent by the controlling end to the controlled end after receiving the reply frame contains the MAC address of the controlling end and the MAC address of the controlled end. 4. The multi-device collaborative UWB communication pairing method according to claim 1, characterized in that the distance calculation formula is distance d = (receiving time-sending time-delay time)*C/2, where C is the speed of light.