KR102497723B1 - A Method For Detecting The Location based Wireless Interference And User Terminal Using The Same - Google Patents

Abstract

A location-based radio interference detection method of a user terminal is disclosed. The detection method includes receiving wireless communication environment information; classifying and storing the received wireless communication environment information according to location; detecting the location of the user terminal; and detecting radio interference based on wireless communication environment information of the predetermined place as the user terminal is located at the predetermined place. According to the location-based radio interference detection method of the present invention, radio interference time can be reduced by selectively searching only frequencies related to radio communication devices located in a specific place.

Description

Location-based wireless interference detection method and user terminal device using the method {A Method For Detecting The Location based Wireless Interference And User Terminal Using The Same}

The present invention relates to a method for detecting radio interference in a specific place in a wireless communication network environment and a user terminal using the method for detecting radio interference.

With the development of wireless communication technology, various wireless communication technologies or wireless communication devices using a shared frequency band are mixed. In wireless communication technologies or wireless communication devices, wireless communication performance is severely deteriorated due to wireless interference. For example, Wi-Fi communication is disconnected when there are microwave ovens, baby monitors, cordless phones, etc. nearby. In addition, when Wi-Fi communication and Bluetooth transmission communication are used simultaneously, communication performance is often reduced by 50% or more.

In the Internet of Thing (IoT) era, a technology for guaranteeing wireless communication performance between increasing IoT devices is required. Therefore, it is necessary to detect radio interference in order to avoid radio interference with other nearby wireless communication technologies or wireless communication devices. However, since wireless communication technologies or wireless communication devices have different wireless interference detection methods, a long detection time is required and it is difficult to grasp the surrounding wireless environment in real time. The reason why it takes so much time to determine interference by other wireless communication technologies or wireless communication devices in the vicinity is that the frequency band to be investigated is diverse, including 2.4 GHz and 5 GHz, and the number of wireless communication technologies or wireless communication devices to be investigated is diverse. because of its different characteristics. For example, it is necessary to check 80 channels to identify the 2.4GHz band with Bluetooth.

As a result, the user has to wait for at least several minutes until a technology for identifying and avoiding performance deterioration factors due to radio interference is applied.

An object of the present invention is to solve the problems of the prior art, and to provide a location-based radio interference detection method capable of quickly and conveniently detecting a cause of radio interference and a user terminal using the method.

Another object of the present invention is to provide a location-based radio interference detection method capable of reducing power consumption due to radio interference detection and a user terminal using the method.

A location-based wireless interference detection method of a user terminal for achieving the above-described object of the present invention includes the steps of receiving wireless communication environment information; classifying and storing the received wireless communication environment information according to location; detecting the location of the user terminal; and detecting radio interference based on wireless communication environment information of the predetermined place as the user terminal is located at the predetermined place.

The wireless communication environment information may be received by a setting user interface (Configuration UI).

The wireless communication environment information may be received by a discovery user interface (Discovery UI).

The wireless communication environment information can be received by the surrounding wireless communication devices providing their own information using an API (application program interface) for information disclosure.

The wireless communication environment information may include at least one of a communication frequency band, a communication channel, a communication range, channel variability, an average number of nodes, and a packet loss rate.

The wireless communication environment information may be received from at least one of a server and a coordinator.

The wireless communication environment information may be provided by a wireless communication device connected to at least one of the server and the coordinator.

The wireless communication device automatically provides its wireless communication environment information to a coordinator when power is turned on, and the coordinator may store the wireless communication environment information in a server.

The radio interference detecting step may detect only a communication frequency band used in a predetermined place.

The communication frequency band may include at least one frequency channel.

The radio interference detecting step may detect a communication frequency band not used in a predetermined place.

The radio interference detection step may further include comparing a radio interference pattern stored for the predetermined location.

A user terminal according to an embodiment of the present invention includes a wireless environment information receiver for receiving wireless communication environment information; a storage unit for classifying and storing the received wireless communication environment information according to location; a location measuring unit for detecting the location of the user terminal; and a processor for detecting radio interference based on wireless communication environment information of the predetermined place as the user terminal is located at a predetermined place.

The wireless environment information receiving unit may receive the wireless communication environment information through a setting user interface (Configuration UI).

The wireless environment information receiving unit may receive the wireless communication environment information through a peripheral device detection user interface (Discovery UI).

The wireless environment information receiving unit includes a wired/wireless communication module, and the wired/wireless communication module may receive wireless communication environment information transmitted by a surrounding wireless communication device using an API (application program interface) for information disclosure.

The wireless communication environment information may include at least one of used frequency band, used channel, communication range, channel variability, average number of nodes, and packet loss rate.

The wired/wireless communication module may receive the wireless communication environment information from at least one of a server and a coordinator.

The wireless communication environment information may be provided by a wireless communication device connected to at least one of the server and the coordinator.

The non-volatile recording medium of the present invention is characterized in that a program for performing a radio interference detection method is recorded.

According to the present invention, when a user terminal is located at a specific location, information on other wireless communication devices or wireless communication technologies present at the specific location is identified in advance, and then only for these other wireless communication devices or wireless communication technologies. By selectively performing radio interference, it is possible to shorten radio interference time and save power consumption. As a result, the user terminal can provide a wireless communication service to the user using a frequency or communication technology in which no wireless interference occurs after detecting the wireless interference in a short time.

1 is a schematic diagram for explaining a process of detecting wireless interference in a general wireless communication environment;
2 is a diagram showing an example in which Wi-Fi and Bluetooth are mixed in a shared frequency band;
3 is a diagram showing an example in which Wi-Fi and ZigBee coexist within a shared frequency band;
4 is a schematic diagram for explaining a process of detecting location-based radio interference in a wireless communication environment according to the proposal of the present invention;
5 is a block diagram showing the configuration of a user terminal and a wireless communication device according to a first embodiment of the present invention;
6 is a block diagram showing the configuration of a user terminal and a wireless communication device according to a second embodiment of the present invention;
7 is a flowchart illustrating a process of a location-based radio interference detection method according to an embodiment of the present invention;
8 is a schematic diagram showing a process of acquiring wireless communication environment information of a predetermined place;
9 is a diagram showing a setting UI for acquiring information of a wireless communication device;
10 is a schematic diagram showing that a user terminal searches for a nearby wireless communication device in a predetermined place;
11 is a diagram showing an information registration UI according to a result of searching for a nearby wireless communication device;
12 is a diagram illustrating an example of a location-based radio interference detection service according to an embodiment of the present invention.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. However, it should be understood that this is not intended to limit the specific embodiments of the present invention, and includes various modifications, equivalents, and/or alternatives of the embodiments of the present invention. In connection with the description of the drawings, like reference numerals may be used for like elements.

In this specification, expressions such as “has,” “can have,” “includes,” or “can include” indicate the presence of a corresponding feature (eg, numerical value, function, operation, or component such as a part). , which does not preclude the existence of additional features.

In this specification, expressions such as “A or B,” “at least one of A and/and B,” or “one or more of A or/and B” may include all possible combinations of the items listed together. . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) at least one B, Or (3) may refer to all cases including at least one A and at least one B.

In this specification, expressions such as “first,” “second,” “first,” or “second,” may modify various components regardless of order and/or importance, and do not limit the components. don't These expressions can be used to distinguish one component from another. For example, a first user device and a second user device may represent different user devices regardless of order or importance. For example, without departing from the scope of the present disclosure, a first element may be termed a second element, and similarly, the second element may also be renamed to the first element.

A component (e.g., a first component) is "(operatively or communicatively) coupled with/to" another component (e.g., a second component); When referred to as "connected to", it should be understood that an element may be directly connected to another element, or may be connected through another element (eg, a third element). On the other hand, when an element (eg, a first element) is referred to as being “directly connected” or “directly connected” to another element (eg, a second element), a component and other components It can be understood that there are no other components (eg, a third component) between the elements.

The expression “configured to (or configured to)” used in this specification means, depending on the situation, for example, “suitable for,” “having the capacity to” ,” “designed to,” “adapted to,” “made to,” or “capable of.” The term “configured (or set) to” may not necessarily mean only “specifically designed to” hardware. Instead, in some contexts, the expression "device configured to" may mean that the device is "capable of" in conjunction with other devices or components. For example, the phrase “a processor configured (or set) to perform A, B, and C” may include a dedicated processor (eg, embedded processor) to perform those operations, or one or more software programs stored in a memory device that executes By doing so, it may mean a general-purpose processor (eg, CPU or application processor) capable of performing corresponding operations.

Terms used in this specification are only used to describe a specific embodiment, and may not be intended to limit the scope of other embodiments. Singular expressions may include plural expressions unless the context clearly dictates otherwise. All terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by a person of ordinary skill in the art of the present disclosure. Terms defined in commonly used dictionaries may be interpreted as having the same or similar meanings as those in the context of the related art, and unless explicitly defined in this specification, they are not interpreted in an ideal or excessively formal sense. . In some cases, even terms defined in this specification cannot be interpreted to exclude embodiments of the present disclosure.

1 is a schematic diagram for explaining a process of detecting radio interference in a general wireless communication environment. As shown, radio interference detection is sequentially performed on the entire shared frequency band, for example, 2.4 GHz and 5 GHz (S10). That is, all channels of the shared frequency band are monitored (S12), and matching is checked for interference patterns collected in all wireless communication technologies and wireless communication devices (S14). This is because the characteristics of wireless communication technologies and wireless communication devices are diverse. After performing the radio interference detection in this way, the detection result is notified to the user (S20). Finally, an operation to avoid the detected radio interference, for example, a communication channel change or a communication technology change is performed (S30).

2 is a diagram illustrating an example in which Wi-Fi and Bluetooth are mixed in a shared frequency band. As shown, it can be seen that Bluetooth channels 0-8 overlap with Wi-Fi channel 1, Bluetooth channels 11-20 overlap with Wi-Fi channel 6, and Bluetooth channels 24-32 overlap with Wi-Fi channel 11. can In this case, in order to detect radio interference, a total of 0 to 39 channels must be detected over a frequency band of 2402 MHz to 2480 MHz.

3 is a diagram illustrating an example in which Wi-Fi and ZigBee coexist within a shared frequency band. As shown, ZigBee channels 11 to 14 overlap with Wi-Fi channel 1, ZigBee channels 16 to 19 overlap with Wi-Fi channel 6, and ZigBee channels 21 to 24 overlap with Wi-Fi channel 11. can In this case, in order to detect radio interference, a total of 11 to 26 channels must be detected over a frequency band of 2402 MHz to 2480 MHz.

4 is a schematic diagram for explaining a process of detecting location-based radio interference in a wireless communication environment according to the proposal of the present invention.

When two wireless communications (for example, Bluetooth communication and Wi-Fi communication) in the home each have a characteristic of using Bluetooth channels 0 to 8 and Wi-Fi channel 1 in the frequency band 2404 MHz to 2420 MHz shown in FIG. 2, the frequency Detect Bluetooth channels 0-8 and Wi-Fi channel 1 in the band 2404MHz ~ 2420MHz.

When two wireless communications (for example, Bluetooth communication and ZigBee communication) in the home each have a characteristic of using ZigBee channels 16 to 19 and Wi-Fi channel 6 in the frequency band 2428 MHz to 2444 MHz shown in FIG. 3, the frequency band is 2428 MHz Detect ZigBee channels 16~19 and Wi-Fi channel 6 at ~2444MHz.

5 is a block diagram showing the configuration of the user terminal 100 and another wireless communication device 200-1 according to the first embodiment of the present invention.

The user terminal 100 includes a first processor 110, a first communication unit 120, a first storage unit 130, a user input unit 140, an interference detection unit 160, a location measurement unit 170, and UI generation. A unit 180 and a display unit 190 are included. In addition to the above components, the user terminal 100 may further include additional components such as various sensors, signal processors, cameras, and speakers. The first communication unit 120, the user input unit 140, and the interference detection unit 150 serve as a wireless environment information receiving unit that receives information on wireless communication devices and wireless communication technologies in a specific place. The user terminal 100 may include any device capable of wireless communication, such as a smart phone, a personal digital assistant (PDA), a laptop computer, a wearable device, a personal computer, and a smart TV.

The first processor 110 includes a central processing unit (CPU), a microprocessing unit (MPU), application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), and programmable logic devices (PLDs). , FPGAs (field programmable gate arrays), micro-controllers (micro-controllers), micro-processors (microprocessors) can be implemented in hardware or software, such as a control board, or a combination of hardware and software. The first processor 110 includes each component of the user terminal 100, for example, the first communication unit 120, the first communication unit 120, the first storage unit 130, the user input unit 140, The interference detection unit 160, the location measurement unit 170, the UI generation unit 180, the display unit 190, etc. are generally controlled, and the surrounding wireless environment receiver, for example, is received from an external device or user through communication or a network. For example, various kinds of wireless communication environment information received, input, and detected through the first communication unit 120, the user input unit 140, and the interference detection unit 160 may be processed by software or hardware. The first processor 110 may include various operating systems (OS) such as, for example, Android version 5.0 (Lollipop). In addition, the first processor 110 may include an application (program) that processes various types of information input by a user (installer) or transmitted by external devices. The first processor 110 may include a platform including an interference detection application program interface (API). When the user terminal 100 is located at a predetermined place, the first processor 110 performs limited wireless interference detection based on wireless communication environment information classified in the predetermined place.

The first communication unit 120 may communicate with the surrounding wireless communication device 200-1, the coordinator 300, or the server 400. The first communication unit 120 is a data communication module such as VDSL, Ethernet, token ring, HDMI (high definition multimedia interface), USB, component, LVDS, HEC, 2G, 3G, 4G, long term evolution (LTE) and Mobile communication modules such as WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) wireless Internet modules, Bluetooth, Short-range communication modules such as Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee may be applied.

The first storage unit 130 stores unlimited data. The first storage unit 130 is accessed by the processor 110, and reading, writing, modifying, deleting, and updating data by the processor 110 are performed. Data stored in the first storage unit 130 is, for example, information on surrounding wireless communication devices and surrounding wireless communication technologies, that is, wireless communication environment information, classified by place and stored. The wireless communication environment information may include, for example, an average number of nodes and a packet loss rate when a plurality of air interfaces are provided. Wireless communication environment information includes wireless communication characteristics of surrounding wireless communication devices and surrounding wireless communication technology, for example, whether a fixed frequency exists, whether there are frequency hoppers, whether there is broadband interference, communication frequency band, communication channel, communication time, and communication range , a communication period, and a communication period. Of course, the first storage unit 130 includes an operating system, various applications executable on the operating system, image data, additional data, and the like. The first storage unit 130 may include a program (application) for performing a wireless interference detection method based on the collected wireless communication environment information.

The first storage unit 130 may be a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (eg SD or XD memory). ), RAM (RAM, Random Access Memory) SRAM (Static Random Access Memory), ROM (ROM, Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory) magnetic memory, It may include a storage medium of at least one type of a magnetic disk and an optical disk.

The user input unit 140 is a means for the user to input various information and is implemented with a microphone, a touch panel, a keyboard, a mouse, a joystick, and various user interfaces displayed on the display unit 190.

The interference detection unit 160 detects a location measurement unit 170 to be described below under the control of the first processor 110 at a predetermined location stored in the storage unit 130 when the user terminal 100 is located at a predetermined location. Based on this, radio interference detection is performed. The interference detection unit 160 measures the power of a signal received at a predetermined place through an antenna. The interference detection unit 160 can perform detection very quickly by selectively detecting only a specific frequency band (channel) according to a detection method, rather than detecting the entire Industrial Scientific and Medical (ISM) frequency band.

The location measuring unit 170 measures the current location of the user terminal. The location measurement unit 170 is implemented as a GPS receiver. Of course, the location of the user terminal 100 may be measured using a plurality of wireless routers, manually input by the user, or received from nearby devices through the first communication unit 120 .

The UI generator 180 creates various interfaces for receiving user information input or commands. The UI generated in this way is displayed on the display unit 190, and the user inputs information or commands through the UI using touch input, a keyboard, or a mouse. The UI generator 180 may generate a setting UI for a user (installer) to input information on nearby wireless communication devices and wireless communication technology, a detection UI for detecting nearby wireless devices, and the like.

The display unit 190 displays information provided to the user. The display unit 190 is implemented with a liquid crystal display (LCD), an electroluminescence display (LED), or the like. The information provided to the user through the display unit 190 includes image information, information on nearby wireless communication devices and wireless communication technologies, information on detection methods for each stored location, and various UIs generated by the UI generator 180. .

The peripheral wireless communication device 200-1 includes a second processor 210-1, a second communication unit 220-1 and a second storage unit 230-1. The peripheral wireless communication device 200-10 may include other components in addition to these components.

The second processor 210-1 controls components of the wireless communication device 200-1, for example, the second communication unit 220-1 and the second storage unit 230-1. The second processor 210-1 may transmit its wireless characteristic information to the user terminal 100 through the second communication unit 220-1. Such wireless characteristic information transmission may be performed upon request of the user terminal 100 or may be transmitted automatically by detection.

The second processor 210-1 includes a central processing unit (CPU), a microprocessing unit (MPU), application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), and programmable logic (PLDs). Devices), FPGAs (field programmable gate arrays), micro-controllers (micro-controllers), micro-processors (microprocessors) are implemented by hardware, software (programs), or a combination of hardware and software.

The second communication unit 220 - 1 performs communication for transmitting and receiving various data with external devices such as the user terminal 100 . The second communication unit 220-1 is a data communication module such as VDSL, Ethernet, token ring, HDMI (high definition multimedia interface), USB, component, LVDS, HEC, 2G, 3G, 4G, long term evolution (LTE) ), wireless Internet modules such as WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), Bluetooth (Bluetooth) ), RFID (Radio Frequency Identification), infrared communication (IrDA, infrared data association), UWB (Ultra Wideband), short-range communication modules such as ZigBee, etc. can be applied.

The second storage unit 230-1 stores unlimited data. The second storage unit 230-1 is accessed by the second processor 210-1, and reading, writing, modifying, deleting, and updating data are performed by the second processor 210-1. The data stored in the second storage unit 230-1 includes, for example, its own wireless communication characteristic information and information on nearby communication devices and wireless communication technologies. Of course, the second storage unit 230-1 includes an operating system, various applications executable on the operating system, image data, and additional data.

The second storage unit 230-1 is a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (for example, SD or XD). Memory, etc.), RAM (RAM, Random Access Memory) SRAM (Static Random Access Memory), ROM (ROM, Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory) Magnetic It may include at least one type of storage medium among a memory, a magnetic disk, and an optical disk.

It is a block diagram showing the configuration of the user terminal 100, the wireless communication devices 200-1, 200-2, 200-3, 200-4, ..., and the coordinator 300 according to the second embodiment of the present invention. . Here, the configuration of the user terminal 100 and the wireless communication apparatuses 200-1, 200-2, 200-3, 200-4, ... are the same as those of the first embodiment shown in FIG. 5, so descriptions thereof are omitted.

The coordinator 300 refers to a sharer, a hub, a smart device, and the like for communication. The coordinator 300 includes a third processor 310, a third communication unit 320 and a third storage unit 330. The coordinator 300 may include other components in addition to these components.

The third processor 310 controls components of the coordinator 300, for example, the third communication unit 320 and the third storage unit 330. The third processor 310 transmits wireless communication characteristic information of the surrounding wireless communication devices 200-1, 200-2, 200-3, 200-4, ... existing in the place where the user terminal 100 is located to the third. It can be transmitted to the user terminal 100 through the communication unit 320 . Transmission of such wireless communication characteristic information may be transmitted upon request of the user terminal 100 .

The third processor 310 includes a central processing unit (CPU), a microprocessing unit (MPU), application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), and programmable logic devices (PLDs). , FPGAs (field programmable gate arrays), micro-controllers (micro-controllers), micro-processors (microprocessors), such as hardware, software (programs), or a combination of hardware and software.

The third communication unit 320 performs communication for transmitting and receiving various data with the user terminal 100 and the wireless communication devices 200-1, 200-2, 200-3, 200-4, .... The third communication unit 320 receives wireless communication characteristic information from the wireless communication devices 200-1, 200-2, 200-3, 200-4, ..., and transmits it to the user terminal 100. The third communication unit 320 is a data communication module such as VDSL, Ethernet, token ring, HDMI (high definition multimedia interface), USB, component, LVDS, HEC, 2G, 3G, 4G, long term evolution (LTE) and Mobile communication modules such as WLAN (Wireless LAN) (Wi-Fi), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access) wireless Internet modules, Bluetooth, Short-range communication modules such as Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), and ZigBee may be applied.

The third storage unit 330 stores unlimited data. The third storage unit 330 is accessed by the third processor 310, and reading, writing, modifying, deleting, and updating data by them are performed. The data stored in the third storage unit 330 includes, for example, collected peripheral communication devices and wireless communication technology information. Of course, the third storage unit 330 includes an operating system, various applications executable on the operating system, image data, additional data, and the like.

The third storage unit 330 is a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (for example, SD or XD memory, etc.) ), RAM (RAM, Random Access Memory) SRAM (Static Random Access Memory), ROM (ROM, Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory) magnetic memory, It may include a storage medium of at least one type of a magnetic disk and an optical disk.

7 is a flowchart illustrating a process of a location-based radio interference detection method according to an embodiment of the present invention.

In step S210, the user terminal 100 acquires information on wireless communication devices and wireless communication technology in the vicinity existing in a predetermined place. 8 is a schematic diagram showing a process of collecting wireless communication environment information. As shown in FIG. 8 , the wireless communication environment information can be grasped through a setting UI 212 , a discovery UI 214 , and an automatic acquisition 216 using an open API. The user terminal 100 may grasp wireless communication environment information directly through a user (installer) input or interference detection, or may indirectly receive information acquired by the coordinator 300 or the server (cloud; 400). The server 400 may directly collect wireless communication environment information from the surrounding wireless communication devices 200-1, 200-2, 200-3, 200-4, ... or indirectly through the coordinator 300. .

9 is a diagram illustrating a setting UI for acquiring information of a wireless communication device. As shown in FIG. 9, the user can set 11 channels (2.454 to 2.470 GHz) (recommended) through the setting UI for Wi-Fi environment setting. At this time, the set 11 channels (2.454 to 2.470 GHz) may suggest interference-free channels in consideration of stored information of other wireless communication devices (technologies). Of course, the user can also set other channels by pressing the channel search button.

Bluetooth communication performs communication while frequency hopping 1600 times per second through 79 allocated channels of a usable frequency band. Frequency hopping refers to a technique in which a large number of channels are rapidly moved according to a specific pattern and data is transmitted little by little. Therefore, in Bluetooth environment setting, as shown in FIG. 9, the user can set hopping channels 0 to 23 (2.404 to 2.452 GHz) (recommended) to avoid interference with other wireless communication devices (technology).

10 is a schematic diagram illustrating that a user terminal searches for nearby wireless communication devices in a predetermined place. As shown, wireless communication devices (technology) (200-1, 200-2, 200-3, 200-4, 200-3, 200-4, 200- 5) can be checked, and each wireless communication characteristic information can be obtained. The user terminal 100 is a Wi-Fi wireless router placed in the living room of the house, a Bluetooth communication master smart TV (200-2) in room 1, an IoT hub (200-3) using ZigBee in room 2, and a kitchen The microwave oven 200-4 and the baby monitor 200-5 in room 3 may be detected and respective wireless communication characteristics may be obtained.

11 is a diagram showing a result of identifying information on wireless communication devices (technologies) within a house using a detection UI. As shown, the user terminal 100 includes a Wi-Fi router 210-1, a Bluetooth communication master smart TV 200-2, an IoT hub using ZigBee 200-3, and a microwave oven 200-4. ) and the wireless communication characteristics of the baby monitor 200-5 in the room 3, for example, a used frequency band and a used channel. The wireless communication characteristics acquired in this way are classified and stored by location in the first storage unit 130 of the user terminal 100, and are utilized for avoiding radio interference.

Another method of acquiring wireless communication characteristics in a certain place is to transmit information of the surrounding wireless communication devices to the user terminal 100 through an open API. Surrounding wireless communication devices automatically transmit their own wireless communication characteristics to the user terminal 100 when the user terminal 100 is turned on at a predetermined place or confirms that it exists at a predetermined place. Of course, the surrounding wireless communication devices must be able to be connected to the user terminal through pairing.

Another method of acquiring wireless communication characteristics in a certain place is to transmit information of the surrounding wireless communication devices to the coordinator 300 through an open API. The surrounding wireless communication devices automatically transmit their own wireless communication characteristic information to the coordinator 300 or server 400 when the power is turned on. The coordinator 300 transmits the collected wireless communication environment information directly to the connected user terminal 100 or indirectly through the server 400 .

As another method of obtaining wireless communication environment information at a predetermined place, the interference detection unit 160 of the user terminal 100 detects the entire Industrial Scientific and Medical (ISM) frequency band at a predetermined place to perform wireless communication. After acquiring environmental information, acquire it as wireless communication environment information linked to a place. In this way, detection for the entire frequency band is performed only once in the first place at the corresponding place, and then interference detection can be selectively performed based on acquired information.

In this way, if the wireless communication environment information is grasped in step S210, in step S220, the identified wireless communication environment information is stored for each place. Wireless communication characteristics as wireless communication environment information include, for example, in which frequency band the surrounding wireless communication device (technology) operates (eg, 2.4GHz or 5GHz), characteristics (eg, fixed frequency: Wi-Fi, ZigBee, Thread, WBAN, Frequency Hoppers: BT/BLE, Analog Cordless Phone, Broadband Interference: Microwave Oven), and frequency band (channel) (in case of fixed frequency). Using this wireless communication environment information, the scope and method (monitoring time, necessary information to be acquired, etc.) to be monitored in the shared frequency band are determined. The radio interference detection method includes at least one of a detection frequency band, a detection channel, a detection time, a detection range, a detection period, a detection period, and a detection number. The wireless interference detection method detects the frequency band (channel) used by neighboring wireless communication devices (technologies) or considers the wireless characteristics of neighboring wireless communication devices (technologies) so that the user terminal 100 is expected to have no interference It can be configured to detect only a frequency band (channel).

In step S230, location measurement is performed using the location measurement unit 1700 of the user terminal 100. If the user terminal 100 is classified in the storage unit and is not located in the stored place, location measurement is continuously performed. If the user terminal 100 is located in a predetermined position, the process proceeds to the next step S240.

In step S240, radio interference detection is performed according to the wireless communication environment information for the predetermined place.

In step S250, the wireless interference detection is compared with the wireless interference pattern of the already stored neighboring wireless communication device (technology). Here, the pre-stored pattern includes a used frequency band, strength of a received signal, air-time of a transmission signal, interval of a transmission signal, and the like. For example, when trying to discover a Wi-Fi router (AP) in a specific area, if the frequency band used by the router is known in advance, only that frequency is specified and monitored. In this way, in detecting radio interference according to the present invention, detection time can be reduced by detecting only selected frequency bands (channels) and comparing only some stored patterns. If the remaining frequency bands (channels) other than the frequency bands (channels) already used by neighboring wireless devices (technologies) are detected, it is preferable when there are many neighboring wireless communication devices (technologies). In this case, since no or very few interference patterns are detected, detection time can also be reduced.

In step S260, radio interference can be avoided by changing the wireless communication frequency band (channel) of the user terminal 100 or changing the communication technology by reflecting the detected result.

An example of a location-based radio interference detection method according to the present invention will be described as follows. Assuming that one Wi-Fi AP in a home uses channel x times and a specific thing A (Thing) for IoT uses channel y times with ZigBee, the user terminal 100 receives information from the coordinator 300 or server 400 Acquires information about a specific object A in the home. The user terminal 100 operates at a fixed frequency of a specific thing A for IoT in the home, and can know the frequency band (2.4 GHz or 5 GHz) and range. Then, as a detection method, the range (x+y) of a specific frequency band (2.4GHz or 5GHz) is determined. Additionally, the user terminal 100 may add a frequency band by receiving information about other nearby wireless communication devices (technology) (eg, next door) from the server 400 . The x range performs monitoring for Wi-Fi detection, and the y range performs monitoring for ZigBee detection. Thereafter, information acquired in the x range performs matching with a Wi-Fi pattern, and matching with a ZigBee pattern in the y range. As a result, it is possible to control channel allocation so that Wi-Fi and ZigBee in the home do not interfere. In addition, when a new wireless communication device is additionally installed in the home, network connection management in the home can be performed to avoid interference. For example, when installing a microwave oven, Wi-Fi APs can be moved to the 5GHz band.

12 is a diagram illustrating an example of a location-based radio interference detection service according to an embodiment of the present invention. First, after generating a radio interference map (MAP) for a subdivided area, the IoT hubs 300 having a plurality of radio interfaces transmit radio interference information (average number of nodes, packet loss rate, etc.) to the server 300. , set a threshold for the number of existing nodes and packet loss rate, and indicate the degree of interference. As shown in the interference level display 510 of FIG. 12, the interference level can be digitized and displayed as 5 for Wi-Fi, 10 for ZigBee, and 15 for Bluetooth. As such, it is possible to perform adaptive network control by utilizing interference MAP information. Even if the Wi-Fi signal is strong, it is recommended to operate in the cellular preferred mode in areas with high interference strength. In this way, it is possible to change or allocate an optimal channel for each device in the IoT hub 300 by utilizing the concept of SDN (Software Defined Networking).

As an embodiment of the present invention, when a microwave oven is present in a home, monitoring may be determined according to the current location of the user terminal. For example, if the user terminal is close to the microwave oven (eg, less than 3 m), it is added to the frequency band for monitoring, and if the user terminal is away from the microwave oven (eg, 3 m or more), monitoring is performed on the frequency band. may not be added to the band.

As described above, the present invention has been described through limited exemplary embodiments and drawings, but the present invention is not limited to the above exemplary embodiments, and those skilled in the art in the field to which the present invention belongs can find various Modifications and variations are possible.

Operations according to embodiments of the present invention may be implemented by a single or a plurality of processors. In this case, program instructions for performing various computer-implemented operations may be recorded on a computer-readable medium. The computer-determinable medium may include program instructions, data files, data structures, etc. alone or in combination. The program commands may be specially designed and configured for the present invention or may be known and usable to those skilled in the art. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks and magnetic tapes, optical recording media such as CD-ROMs and DVDs, magneto-optical media such as floptical disks, and ROMs. Hardware devices specially configured to store and execute program instructions, such as RAM, flash memory, and the like. Examples of program instructions include high-level language codes that can be executed by a computer using an interpreter, as well as machine language codes such as those produced by a compiler. When all or part of the base station or relay described in the present invention is implemented as a computer program, a computer readable recording medium storing the computer program is also included in the present invention.

Therefore, the scope of the present invention should not be limited to the described exemplary embodiments and should not be defined, and should be defined by not only the claims to be described later, but also those equivalent to these claims.

100: user terminal
110: first processor
120: first communication unit
130: first storage unit
140: user input unit
160: interference detection unit
170: position measuring unit
180: UI generator
190: display unit
200-1∼200-5: Peripheral wireless communication device
300: Coordinator
400: server

Claims (20)

In the location-based radio interference detection method of the user terminal,
receiving wireless communication environment information;
classifying and storing the received wireless communication environment information according to location;
detecting the location of the user terminal;
When the user terminal is located at a predetermined place, detecting wireless interference based on a method for performing wireless interference detection identified based on wireless communication environment information of the predetermined place,
The wireless communication environment information is at least one of a fixed frequency, a frequency hopper that changes frequency at predetermined time intervals, broadband interference, a communication frequency band, a communication channel, a communication time, a communication range, a communication period, or a communication period. contains one,
The method for performing radio interference detection includes at least one of a detection frequency band, a detection channel, a detection time, a detection range, a detection period, a detection period, and a detection number.
delete delete delete According to claim 1,
The wireless communication environment information further includes at least one of channel variability, average number of nodes, and packet loss rate.
delete delete delete delete delete delete delete In the user terminal,
a wireless environment information receiver for receiving wireless communication environment information;
a storage unit for classifying and storing the received wireless communication environment information according to location;
a location measuring unit for detecting the location of the user terminal;
A processor for detecting radio interference based on a method for performing radio interference detection identified based on wireless communication environment information of the predefined location as the user terminal is located at a predefined location;
The wireless communication environment information is at least one of a fixed frequency, a frequency hopper that changes frequency at predetermined time intervals, broadband interference, a communication frequency band, a communication channel, a communication time, a communication range, a communication period, or a communication period. contains one,
The method for performing radio interference detection includes at least one of a detection frequency band, a detection channel, a detection time, a detection range, a detection period, a detection period, and a detection number.
According to claim 13,
The wireless environment information receiving unit is a user terminal, characterized in that for receiving the wireless communication environment information by a setting user interface (Configuration UI).
According to claim 13,
The wireless environment information receiving unit is a user terminal, characterized in that for receiving the wireless communication environment information by a peripheral device detection user interface (Discovery UI).
According to claim 13,
The wireless environment information receiver includes a wired/wireless communication module,
The wired/wireless communication module is a user terminal, characterized in that for receiving wireless communication environment information transmitted by a peripheral wireless communication device using an API (application program interface) for information disclosure.
According to claim 13,
The wireless communication environment information further includes at least one of channel variability, average number of nodes, and packet loss rate.
According to claim 16,
The wired/wireless communication module is a user terminal, characterized in that for receiving the wireless communication environment information from at least one of a server or a coordinator.
According to claim 18,
The wireless communication environment information is provided by a wireless communication device connected to at least one of the server and the coordinator.
A non-volatile recording medium storing a program for performing the wireless interference detection method according to claim 1.

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