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A multi-hop network communication method, device and system

A multi-hop network and communication method technology, applied in the field of devices and systems, multi-hop network communication methods, can solve problems such as equipment interference, achieve the effects of achieving stability, no network transmission overhead, and avoiding interference problems

Active Publication Date: 2021-08-10
韩剑坡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, there will often be interference problems between devices during the communication process.

Method used

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  • A multi-hop network communication method, device and system
  • A multi-hop network communication method, device and system
  • A multi-hop network communication method, device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1 of the present invention provides a multi-hop network communication method, taking the gateway device as an example, the process is as follows figure 2 shown, including the following steps:

[0065] Step S21: The gateway device allocates the time slot of the beacon window and the time slot of the scheduling window in the beacon period to the relay device.

[0066] The beacon frame is a periodic signal sent by the wireless router. After the wireless network card scans the beacon frame, it will find the corresponding router and display it. The beacon interval is the interval time for routers to send beacon frames. Specifically, the above-mentioned beacon period may be the moment when the gateway device sends a beacon frame once and the interval between sending a next beacon.

[0067] A time slot is the smallest time unit used for synchronous transmission, for example, a time slot may be 10 ms. Wherein, synchronous transmission means that the clocks of all...

Embodiment 2

[0090] Embodiment 2 of the present invention provides a multi-hop network communication method, taking the relay device as an example, the process is as follows Figure 5 shown, including the following steps:

[0091] Step S51: When it is necessary to send a beacon frame, the relay device broadcasts the beacon frame in the time slot of the beacon window of the beacon cycle allocated by the gateway device for the relay device.

[0092] The beacon frame broadcast by the relay device includes the division of each window in the beacon period, the time stamp of the gateway device, the time slot for the gateway device to send the beacon frame, and the link quality of the relay device. The division of each window in the beacon period, the time stamp of the gateway device and the time slot for the gateway device to send the beacon frame are obtained according to the information included in the received beacon frame.

[0093] Step S52: When the service frame needs to be forwarded, the...

Embodiment 3

[0109] Embodiment 3 of the present invention provides a specific implementation of a multi-hop network communication method, the process of which is as follows Figure 6 shown, including the following steps:

[0110] Step S61: The relay device determines the device with the best link quality as the parent node according to the link quality of the corresponding device in the scanned beacon frame.

[0111] Step S62: The relay device synchronizes the local clock according to the time stamp of the gateway device included in the scanned beacon frame and the time slot at which the gateway device sends the beacon frame.

[0112] Step S63: The relay device determines the time slot segment of the random access window according to each window division of the beacon period in the scanned beacon frame.

[0113] Step S64: the relay device sends a network access request including parent node information to the gateway device in a random backoff manner during the time slot of the random acc...

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Abstract

The invention discloses a multi-hop network communication method, device and system. The method includes: using time-division multiplexing to communicate, and the channel scheduling algorithm, that is, the allocation of time slots, is performed by the gateway device alone; When it is necessary to send a service frame, the gateway device sends the service frame to the next-level relay device in the corresponding time slot of the scheduling window of the beacon period; the time slot allocation result determined by the gateway device is used by the relay device The beacon frame is broadcast in the time slot of its own beacon window, and the received service frame is forwarded in the corresponding time slot of the scheduling window. The interference problem in the multi-hop network communication process can be avoided, and the stability of the multi-hop network communication can be realized.

Description

technical field [0001] The present invention relates to the technical field of the Internet of Things, in particular to a multi-hop network communication method, device and system. Background technique [0002] The Internet of Things (IoT) is an information carrier such as the Internet and traditional telecommunication networks, which enables all ordinary objects that can perform independent functions to realize interconnection and intercommunication. In order to achieve large-scale coverage of the Internet of Things, it is generally achieved through multiple devices and a multi-hop network, such as a mesh network. In this way, interference problems between devices often exist in the communication process. The larger the network, the more devices and the greater the interference, which ultimately affects the stability and other performance of the network. Contents of the invention [0003] In view of the above problems, the present invention is proposed to provide a mult...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W4/06H04W24/04H04W72/04
Inventor 韩剑坡
Owner 韩剑坡