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Network anti-collision method and device

An anti-collision and network technology, applied in the field of mobile Internet, can solve the problems of signal interference, unsuitability, unsuitable for unmanned system private network deployment, etc., to achieve the effect of improving reliability and preventing network collision

Active Publication Date: 2022-03-15
杭州若联科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the data link delay provided by the WiFi gateway will increase sharply with the increase of the number of unmanned system nodes in the network, the channel access mechanism performance bottleneck of the MAC layer of the WiFi protocol stack is not suitable for high-density clusters. Man-machine system application; in addition, the general working frequency band of WiFi gateway is 2.4GHz, because there are many devices in this frequency band, it may cause a lot of signal interference; Human system nodes; the transmission distance of the WiFi link is easily affected by obstacles, etc., which is not suitable for the deployment of unmanned system private networks in a large outdoor area
[0003] Therefore, WiFi gateways are not suitable for UAS applications in high-density clusters

Method used

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  • Network anti-collision method and device
  • Network anti-collision method and device

Examples

Experimental program
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no. 1 example

[0026] Please refer to figure 2 , figure 2 It is a flowchart of a network anti-collision method provided by the first embodiment of the present invention, and the method is applied to a client. The client acts on the communication protocol stack for the cluster unmanned system designed based on the LORA physical layer modulation technology. The following will be figure 2 The process shown is described in detail, and the method includes:

[0027] Step S110: When the client acquires the data to be sent, it detects the wireless channel.

[0028] When the client obtains the data to be sent, it can detect the LORA wireless channel to determine whether the wireless channel is idle. Further, the client can determine whether there is a LORA on the LORA wireless channel TM Packet preamble. If it exists, the client judges that the LORA wireless channel is occupied by other devices and is in a non-idle state, and cannot be used to send data or information at this time. If not, ...

no. 2 example

[0047] Please refer to Figure 4 , Figure 4 It is a structural block diagram of a network anti-collision device 400 provided in the second embodiment of the present invention. The following will be Figure 4 The structure block diagram shown is described, and the shown device includes:

[0048] The detection module 410 is configured to detect the wireless channel when the data to be sent is acquired;

[0049] A delay module 420, configured to delay the sending time of the data for a first preset time period when the wireless channel is in a non-idle state;

[0050] A first judging module 430, configured to judge whether the first preset time period exceeds a pre-saved time period threshold;

[0051] The execution module 440 is configured to re-detect the wireless channel and execute subsequent steps when the judgment of the first judging module is negative.

[0052] Additionally, see Figure 5 , as an implementation manner, the device may further include a second judgin...

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Abstract

The present invention provides a network anti-collision method and device. The method includes: when the client acquires the data to be sent, the wireless channel is detected; when the client judges that the wireless channel is not in an idle state, the The sending time of the data is delayed by a first preset time period; the client judges whether the first preset time period exceeds a pre-saved time period threshold; The channel is detected and subsequent steps are performed. The method detects channel conditions before sending data, and only sends data when the channel is clean and without interference, thereby preventing network collisions and improving the reliability of the data transmission network.

Description

technical field [0001] The present invention relates to the field of mobile Internet, in particular, to a network anti-collision method and device. Background technique [0002] Most of the existing unmanned system (unmanned aerial vehicle cluster, ground robot cluster) cluster applications use the gateway based on the WiFi protocol stack as the wireless communication link to provide information between unmanned systems and between unmanned systems and gateways. exchange. However, since the data link delay provided by the WiFi gateway will increase sharply with the increase of the number of unmanned system nodes in the network, the channel access mechanism performance bottleneck of the MAC layer of the WiFi protocol stack is not suitable for high-density clusters. Man-machine system application; in addition, the general working frequency band of WiFi gateway is 2.4GHz, because there are many devices in this frequency band, it may cause a lot of signal interference; Human s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W28/04H04W74/08
CPCH04L47/12H04L47/29H04W74/0816H04W74/085H04W8/04
Inventor 袁振珲
Owner 杭州若联科技有限公司