Abstract:
PROBLEM TO BE SOLVED: To provide a radio communication method for a magnetic field communication network with which a number of sensor nodes can be recognized in a short time, and a demodulation device for a coordinator.SOLUTION: A radio communication method for a magnetic field communication network includes: a step (a) performed by a coordinator in the magnetic field communication network for transmitting to a sensor node a requirement signal requiring a response; a step (b) for selecting any one of response signals received from the sensor node; a step (c) for transmitting an approval signal to the sensor node corresponding to the response signal selected in the step (b); a step (d) for selecting any one of response signals retransmitted from sensor nodes that can not receive the approval signal in the step (c); and a step (e) for transmitting an approval signal to a sensor node corresponding to the response signal selected in the step (d).
Abstract:
PROBLEM TO BE SOLVED: To provide a visitor management device which collaborates with a home network and a visitor's terminal, and a method therefor.SOLUTION: A visitor management device comprises: an inviter terminal which receives visitor's information input by an inviter and transmits an invitation message including installation information of a management application to the visitor's terminal corresponding to the input information; and an inviter server which collects authentication information and position information of the visitor from the visitor's terminal via the management application, and when the server confirms that the visitor has already reached a predetermined range preset as a visit place, opens a door after verifying the authentication information.
Abstract:
PROBLEM TO BE SOLVED: To provide an IoT (Internet of Things) browsing method and device.SOLUTION: In the IoT browsing method, when a mobile device executes a browser, the browser receives information about an IoT device and displays the IoT device on a map in the icon form. Accordingly, the IoT device is displayed on the map in the icon form and a browser for providing various IoT services can be provided, so that a user can easily search for many IoT devices to have access thereto and can receive services.
Abstract translation:要解决的问题:提供物联网(Internet of Things)浏览方法和设备。解决方案:在IoT浏览方法中,当移动设备执行浏览器时,浏览器接收有关物联网设备的信息,并将IoT设备显示在 以图标形式映射。 因此,IoT设备以图标形式显示在地图上,并且可以提供用于提供各种IoT服务的浏览器,使得用户可以容易地搜索许多IoT设备以访问它并且可以接收服务。
Abstract:
PROBLEM TO BE SOLVED: To provide magnetic field based low frequency band radio communication for supporting a packet format, coding and modulation systems suitable between a master and a slave so as to carry out radio communication with a data rate or coding system variable according to peripheral environments in the magnetic field based low frequency band radio communication applied to adverse environments.SOLUTION: In a method of configuring a physical layer in magnetic field based low frequency band radio communication, a data rate and a coding system of a payload field contained in a request frame and a response frame between a master and a frame is made variable in accordance with a peripheral communication environment within a predetermined range. In such a configuration, the request frame and the response frame may be comprised of the same format but such request frame and response frame may include a preamble field, a header field and a payload field, respectively.