Apparatus and method for setting exclusive transmission channel to avoid interfering signals
A transmission channel and interference avoidance technology, applied in wireless communication, network topology, electrical components, etc., can solve the problems of deteriorating data transmission quality and interference
Active Publication Date: 2018-11-06
ELECTRONICS & TELECOMM RES INST
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- Application Information
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Problems solved by technology
However, on a wireless sensor network employing a plurality of wireless sensors, the wireless sensors use an unlicensed communication band, thereby causing interference to other wireless devices in railway vehicles that use the same frequency band as the wireless sensors
As a result, data transfer quality can deteriorate
Method used
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[0017] The following description is provided to assist the reader in gaining an overall understanding of the methods, devices and / or systems described herein. Accordingly, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will occur to those skilled in the art. Also, descriptions of well-known functions and constructions may be omitted for increased clarity and conciseness.
[0018] Thereafter, a detailed description is provided with reference to the drawings.
[0019] figure 1 is a diagram illustrating an example in which an apparatus for setting an exclusive transfer channel is used.
[0020] For example, the apparatus 100 for setting an exclusive transmission channel can be used for a safety management system of a railway vehicle. In order to ensure the safety of rail transportation, it is necessary to simultaneously measure heat and vibration of an axle of a rail vehicle in order to detect abnormalities. For the sa...
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An apparatus and method for setting exclusive transmission channels of different frequency bands monitors the status of railway vehicles using a railway wireless sensor network, and transmits the monitoring results to a control center. According to an exemplary embodiment, the apparatus for setting an exclusive transmission channel includes: an interference measurement unit configured to divide all available frequency bands into a plurality of frequency bands, and measure each divided frequency band communicating with one or more sensors the amount of interference; the exclusive transmission channel setting unit is configured to calculate a moving average of the measured interference amount of each divided frequency band, and set the one or more channels used in each time slot based on the calculated moving average an exclusive transmission channel for a sensor, to which a frequency band is allocated; and a frequency modulator configured to modulate a frequency used by each of the one or more sensors corresponding to a frequency band in the exclusive transmission channel.
Description
[0001] Cross References to Related Applications [0002] This application claims priority over Korean Patent Application No. 10-2013-0143064 filed with KIPO on Nov. 22, 2013 and Korean Patent Application No. 10-2014-0121096 filed with KIPO on Sep. 12, 2014 Right, the entire disclosure of which is hereby incorporated by reference for all purposes. technical field [0003] The following description relates to techniques for avoiding interfering signals occurring on railway wireless sensor networks for the purpose of safety management of railway facilities. Background technique [0004] For the safety management of railway facilities, regular monitoring of railways and railway vehicles is required, and, if any problem is found, it is repaired and reconditioned. For this purpose, operating conditions, such as heat and vibration of railway vehicles, and degree of wear and tear of railways, are checked in real time. [0005] Among recent technologies, there is a technology of in...
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IPC IPC(8): H04W16/14H04W84/18
CPCH04W74/04B61L27/04H04W72/541
Inventor 金永一吕建民柳原蔡宗锡金哉勋
Owner ELECTRONICS & TELECOMM RES INST