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Wi-Fi parameter determination method and device, signal transmission method and system

A parameter determination and signal technology, applied in the field of communication, can solve the problem that one waveguide cannot transmit multiple signals at the same time, and achieve the effects of avoiding channel backoff, reducing cost and reducing interference

Active Publication Date: 2016-08-03
CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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Problems solved by technology

[0003] In view of this, the embodiment of the present invention provides a WIFI parameter determination method and device, and a signal transmission method and device, with the purpose of solving the problem that one waveguide cannot simultaneously transmit multiple signals

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  • Wi-Fi parameter determination method and device, signal transmission method and system
  • Wi-Fi parameter determination method and device, signal transmission method and system
  • Wi-Fi parameter determination method and device, signal transmission method and system

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Embodiment Construction

[0050] The embodiment of the present invention discloses a method and device for determining WIFI parameters. The purpose is to enable orthogonal signals to be transmitted in the same propagation medium using the principle of medium radio frequency leakage without interference from side lobes. The core invention is to determine the propagation medium The communication parameters of the orthogonal channels in , so that when the signal is transmitted to each channel, the signal quality of the adjacent channel will not be disturbed, and the carrier sensing threshold of each channel is higher than the sum of the interference power of all other channels At the same time, the embodiment of the present invention also discloses a signal transmission method and system, which uses the above-mentioned determined communication parameters to transmit orthogonal signals in the same propagation medium using the principle of dielectric radio frequency leakage.

[0051] The following will clear...

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Abstract

The invention embodiment provides a Wi-Fi parameter confirmation method and a device. The Wi-Fi parameter confirmation method and the device are used for adopting orthogonal channels in propagation medium of the medium radio frequency leakage principle to successively ascertain the threshold launching power of each orthogonal channel and enable signals which are received from the adjacent channels of current channels to satisfy preset conditions when the signals are launched by the current channels by the threshold launching power; successively confirming carrier monitor thresholds of other channels using respective launching power to launch signals of each orthogonal channel, due to the fact that the confirming principle of the threshold launching power of each channel is not to affect signal receiving quality in the adjacent channels, the confirming principle of each channel is more than the sum of the interference power of other channels, therefore, enabling the transmission mediums which adopt the same medium radio frequency principle to exist the orthogonal channels, and therefore required cost can be effectively lowered when multipath signals are transmitted.

Description

technical field [0001] The present invention relates to the field of communications, in particular to a method and device for determining WIFI parameters, and a signal transmission method and system. Background technique [0002] With the development of rail transportation, the amount of information that rail trains need to interact with the ground is increasing. At present, rail trains and the ground use WIFI to communicate. In order to ensure the transmission quality of the signal, the waveguide is usually selected as the communication medium. Due to the characteristics of the waveguide cavity, the attenuation of the signal in the waveguide cavity is very small. Therefore, even if the orthogonal channel is used, because the signal attenuation is small, the sidelobe leakage power of the signal will cause serious adjacent channel interference. It can be seen that the same Waveguides are also unable to transmit multi-channel signals. Therefore, in the face of the increasing ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W52/34
Inventor 华尧吉萌樊帅师进江明周暐
Owner CRSC RESEARCH & DESIGN INSTITUTE GROUP CO LTD
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