Wireless LAN Router and Wireless LAN System

Abstract

To provide a wireless LAN router and a wireless LAN system which are connected to a wireless LAN repeater via an outdoor communication path with maximum communication capacity without violating laws.SOLUTION: A wireless LAN router 300 provided with a wing-room mode, which is used when connected to a wireless LAN repeater 100 via an outdoor communication path 600 and connected to a host 300a via an indoor communication path 700a, is provided with a wireless communication circuit 10 in a 2.4 GHz band, a wireless communication circuit 20 in a 5 GHz band, and a wireless communication circuit 30 in a 6 GHz band. When the wing-room mode is activated, the wireless LAN router selects a connectable frequency band in accordance with a request from the wireless LAN repeater 100 from among the 6GHz frequency band VLP, the 5GHz W56 frequency band, and the 2.4 GHz frequency band, to connect to the wireless LAN repeater 100, and connects to the host 300a in the 2.4 GHz frequency band, the 5GHz frequency band, and / or the 6GHz frequency band in response to a request.SELECTED DRAWING: Figure 8

Description

Technical Field

[0001] The present invention relates to a repeater for wireless LAN, a router for wireless LAN, and a wireless LAN system, each having a method for switching a wireless LAN frequency band. Note that the router for wireless LAN in the present invention refers to the master unit of the wireless LAN, and includes a wireless LAN access point that does not have a router function.

Background Art

[0002] Regarding a wireless communication device having a method for switching a wireless LAN frequency band, the following inventions are disclosed.

[0003] For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2003-333640) discloses a method in a wireless communication device compatible with a plurality of frequency bands such as a 5.2 GHz band and a 2.4 GHz band, in which a control unit of the wireless communication device determines whether the device is indoors or outdoors, and a display terminal that constitutes a wireless communication system with a base device is provided with a detection antenna having high directivity in one direction so that the direction of its high directivity is opposite to the direction of gravity. A detection transmission signal is radiated from the detection antenna, and a reflected wave from a reflecting object due to the radio wave is received by the detection antenna and processed by a processing circuit. From the processing result, a method is disclosed in which a control unit (CPU) determines whether the display terminal is indoors or not and selects a communication frequency band.

[0004] In addition, Patent Document 2 (Japanese Patent Application Laid-Open No. 2015-192315) discloses a wireless communication device having a relay function. As a wireless communication device that performs communication using an appropriate frequency without using a frequency band prohibited by laws and regulations, etc., based on a small and simple configuration and reliable determination means, it includes a first wireless communication unit that communicates with a connection destination using a first wireless signal according to predetermined communication conditions, a second wireless communication unit that communicates using a second wireless signal, a communication method determination unit that determines what is possible as communication conditions and outputs the determination result, and a restriction unit that instructs the second wireless communication unit to permit or prohibit the use of a predetermined frequency band based on a predetermined approval / disapproval criterion including the determination result.

[0005] In addition, Patent Document 3 (Japanese Patent Application Laid-Open No. 2004-336351) relates to a warning method when using a wireless LAN device capable of transmitting and receiving even in a frequency band where use is prohibited under predetermined conditions. It detects whether the wireless LAN device is about to start communication using a frequency band where use is prohibited under predetermined conditions, and when it is about to start communication using the frequency band, it issues a warning indicating that the use of the frequency band is prohibited under the predetermined conditions. A warning method when using a wireless LAN device is disclosed.

[0006] In addition, Patent Document 4 (International Publication No. 2012 / 137908) discloses a wireless communication device having a function of selecting a wireless communication method that employs a frequency band suitable for location information from different frequency bands to form a wireless service area. It includes a first wireless communication unit that connects to an external network, a second wireless communication unit that forms a service area connectable to the external network using either a first frequency band or a second frequency band, both of which are different, a location information acquisition unit that acquires the location information of the own device, and a selection unit that selects either the first frequency band or the second frequency band based on the location information.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

[0008] In recent years, in wireless LANs, both the 2.4 GHz band and the 5 GHz band can be used. Furthermore, in the 5 GHz band, W52 in the 5.2 GHz band, W53 in the 5.3 GHz band, and W56 in the 5.6 GHz band can be used. Along with this, routers, repeaters (communication devices having a relay function for connecting a router and a host), and hosts such as computers equipped with a wireless LAN communication function are also widely provided with communication functions at all frequencies of 2.4G, W52, W53, and W56. However, the frequency of the 5.2 GHz band overlaps with the feeder link of the satellite communication system, and the 5.3 GHz band and the 5.6 GHz band overlap or are adjacent to the weather radar. Therefore, in a home wireless LAN, usage restrictions are imposed for each frequency band.

[0009] Recently, efforts have been underway worldwide to use the 6 GHz band frequency for Wi-Fi. In the United States, in the U-NII 5 (5.925 - 6.425 GHz) and U-NII 7 (6.525 - 6.875 GHz) bands, the use of Standard Power APs (standard power access points, capable of outdoor communication) and Low Power APs (low power access points, limited to indoor communication) is already permitted. Also, in the U-NII 6 (6.425 - 6.525 GHz) and U-NII 8 (6.875 - 7.125 GHz) bands, the use is permitted only for Low Power APs. Additionally, further consideration is being given to Very Low Power with even lower output. In Japan as well, on September 2, 2022, a new ordinance regarding the introduction of 6 GHz band Wi-Fi was promulgated and implemented, and a new frequency band in the 6 GHz band (5925 MHz to 6425 MHz) was defined as a low-power data communication system. In the new ordinance, wireless stations that can be used only indoors are LPIs (Low Power Indoor) with an equivalent isotropically radiated power (EIRP) of up to 200 mW, and wireless stations that can be used indoors and outdoors are VLPs (Very Low Power) with an EIRP of up to 25 mW. Table 1 below shows the restrictions for each frequency band as of September 2022.

[0010]

Table 1

[0011] As shown in Table 1, the 2.4 GHz band and the W56 band can be used indoors and outdoors, but the W52 band and the W53 band can be used only indoors. Also, DFS (Dynamic Frequency Selection) obliges Wi-Fi devices to detect radar waves and stop transmitting (and move to other channels) when detected, mainly to avoid adverse effects on C-band radars mainly used for meteorological observations. The installation of the DFS function is obligatory in the W53 band and the W56 band. Regarding the 6 GHz band, VLP can be used indoors and outdoors, while LPI can only be used indoors.

[0012] Recently, as a usage method of a wireless LAN, as depicted in Fig. 16, a router is placed in the main house and a repeater is placed in a detached house, and communication is performed via a wireless LAN between the wireless LAN router and the wireless LAN repeater, and further communication is also performed via a wireless LAN between the wireless LAN repeater and a host in the detached house. In this case, since the path between the wireless LAN router and the wireless LAN repeater corresponds to an outdoor communication path, communication must be performed using the 2.4 GHz band, 5 GHz W56 band, or 6 GHz band VLP. However, with conventional wireless LAN routers and wireless LAN repeaters, it is technically possible to communicate even in the 5 GHz W52 band, W53 band, and 6 GHz band LPI. Therefore, it is conceivable that in some cases, the connection between the wireless LAN router and the wireless LAN repeater via the outdoor communication path using the 5 GHz W52 band, W53 band, or 6 GHz band LPI may result in a violation of the law and have an adverse impact on radar and the like. Also, at startup, when communication between the router and the repeater is performed using W56, which is legally recognized for outdoor use and has a large communication capacity, if radar radio waves are detected by the wireless LAN router, depending on the control algorithm of the wireless LAN router, the wireless frequency band may be switched to W52 or W53, where outdoor use is prohibited. Also, in a wireless LAN repeater that has a function to switch communication with a host from W56 to the 2.4 GHz band when radar radio waves are detected, since information indicating that radar radio waves have been detected cannot be transmitted to the wireless LAN router, if the wireless LAN router cannot detect radar radio waves, the communication between the wireless LAN router and the wireless LAN repeater may remain in the W56 band.

[0013] In the invention described in Patent Document 1, a display terminal that constitutes a wireless communication system with a base device is equipped with a detector for determining whether the device is indoors or outdoors. However, what the detector described in Patent Document 1 detects is whether the device is indoors or outdoors. When a wireless LAN repeater is indoors as depicted in FIG. 6 and the area between the wireless LAN router and the wireless LAN repeater is outdoors, it is determined to be indoors.

[0014] Further, in the wireless communication device (wireless LAN repeater) of the invention described in Patent Document 2, when the first communication unit connected to the router is using the W52 band or the W53 band, that is, when it is determined that the path between the router and the repeater is an indoor communication path, the use of the W52 band and the W53 band is permitted only for the second communication unit connected to the host. However, when a wireless LAN repeater and a host are indoors as depicted in FIG. 6 and the path between the wireless LAN router and the wireless LAN repeater is an outdoor communication path, even if the wireless LAN router and the wireless LAN repeater are using the 2.4 GHz band or the W56 band, the wireless LAN repeater and the host can use the W52 band or the W53 band. Therefore, the control algorithm of the invention described in Patent Document 2 is not appropriate for the usage as depicted in FIG. 6.

[0015] Moreover, the invention described in Patent Document 3 is an invention of an information communication device equipped with a wireless LAN. Since there is no description regarding communication with a host, which is an essential function in a wireless LAN repeater, and there is no description regarding the case when radar radio waves are detected, it does not provide a solution to the problem to be solved by the present invention.

[0016] In the invention described in Patent Document 4, when the position information of the own device is acquired and the position of the own device is a position where it is highly likely to be used outdoors, among the first frequency band and the second frequency band, a wireless communication method using the frequency band that is permitted to be used outdoors is selected. However, also in the case of the invention described in Patent Document 4, only the own device detects the position information. Therefore, when the wireless LAN repeater and the host are indoors as depicted in FIG. 6 and the area between the wireless LAN router and the wireless LAN repeater is outdoors, there is a possibility of making an incorrect determination regarding the usable wireless communication method. Further, Patent Document 4 also does not describe the case where radar waves are detected.

[0017] A main object of the present invention is to provide a wireless LAN repeater, a wireless LAN router, and a wireless LAN system having a wireless LAN channel switching method that use a radio wave band that can be used outdoors as defined by laws and regulations and preferentially use a frequency band with a larger communication capacity in a wireless LAN repeater arranged in a detached house or the like and connected to a wireless LAN router arranged in a main house or the like via an outdoor communication path. A further object of the present invention is to provide a wireless LAN repeater, a wireless LAN router, and a wireless LAN system having a wireless LAN channel switching method that, when a radar wave in the W56 band is detected and the connection in the existing channel between the wireless LAN router and the wireless LAN repeater becomes impossible in a wireless LAN repeater connected to a wireless LAN router via an outdoor communication path, reconnects in a frequency band with as large a communication capacity as possible, and, when the connection between the wireless LAN router and a frequency band with a larger communication capacity becomes possible, can return to that frequency band as soon as possible.

Means for Solving the Problems

[0018] (1) A repeater for a wireless LAN according to one aspect is a repeater for a wireless LAN that is connected to a router for a wireless LAN via an outdoor communication path and has a remote mode that is used when connected to a first host via an indoor communication path. The repeater includes a wireless communication circuit capable of communicating in the 2.4 GHz band, a wireless communication circuit capable of communicating in the 5 GHz band, and a wireless communication circuit capable of communicating in the 6 GHz band. When starting up the remote mode, it selects an optimal communication environment from among the connectable frequency bands of 6 GHz band VLP (Very Low Power), 5 GHz W56 band, and 2.4 GHz band and connects to the router for the wireless LAN. For the first host, it connects in the 2.4 GHz band, 5 GHz band, and / or 6 GHz band according to the requirements of the first host. When the connection between the repeater for the wireless LAN and the first host is in the 6 GHz band, it may be connected in 6 GHz band LPI (Low Power Indoor). Also, when simultaneously connecting to the router for the wireless LAN and the host in the same frequency band in the 6 GHz band, 5 GHz band, or 2.4 GHz band, the same channel is used for connection in each frequency band. Connecting in the 2.4 GHz band, 5 GHz W56 band, and / or 6 GHz band means connecting in a frequency band selected from the group consisting of the 2.4 GHz band, 5 GHz W56 band, and 6 GHz band, including single and all combinations.

[0019] When the router for the wireless LAN is placed in the main house and the repeater for the wireless LAN is placed in a detached house independent of the main house, since the repeater for the wireless LAN is connected to the router for the wireless LAN via an outdoor communication path, using the 5 GHz W52 band, W53 band, or 6 GHz band LPI would be a violation of the law. However, in the repeater for a wireless LAN according to one aspect, only the 6 GHz band VLP, 5 GHz W56 band, or 2.4 GHz band, in which outdoor communication is permitted, is used for communication between the router for the wireless LAN and the repeater for the wireless LAN. Therefore, there is no possibility of affecting satellite communication systems, weather radars, and telecommunications services (fixed satellites, etc.), and there is no violation of the law.

[0020] Also, in a repeater for a wireless LAN that follows one aspect, it selects and connects to the optimal communication environment among the 6 GHz band VLP, 5 GHz W56 band, and 2.4 GHz band. Therefore, for example, when the distance between a wireless LAN router and a wireless LAN repeater is far, even though the frequency band is wide but the EIRP is as small as 25 mW equivalent at most in the 6 GHz band VLP, if the frequency band is narrow but the EIRP is as large as 1000 mW (in the case of TPC) in the 5 GHz W56 band and the communication capacity is large, by selecting the 5 GHz W56 band, a communication environment with a larger communication capacity can be selected. In addition, when the wireless LAN repeater has two or more wireless communication circuits capable of communicating in the 5 GHz band, in the 5 GHz band, the connection to the wireless LAN router can be set to the W56 band, and the connection to the first host can be set to the W52 or W53 band.

[0021] (2) The wireless LAN repeater according to the second invention is a wireless LAN repeater that follows one aspect, and the wireless communication circuit capable of communicating in the 2.4 GHz band, the wireless communication circuit capable of communicating in the 5 GHz band, and the wireless communication circuit capable of communicating in the 6 GHz band may each be composed of one circuit.

[0022] In this case, the circuit scale of the wireless communication circuit can be suppressed. In addition, in the case of using multi-link operation (MLO) that can simultaneously use multiple frequency bands at the time of connection in WiFi7 or the like that is expected to be put into practical use in the future, in order to start MLO smoothly, it is desirable to limit the connection in the 5 GHz band between the wireless LAN repeater and the host to W56.

[0023] (3) The repeater for wireless LAN according to the third invention is a repeater for wireless LAN that follows one aspect. When it is impossible to connect to a wireless LAN router using the 6 GHz band VLP, it requests to enable the connection to the wireless LAN router using the 6 GHz band VLP. When the connection using the 6 GHz band VLP becomes possible, it may again select the optimal communication environment from among the connectable frequency bands of the 6 GHz band VLP, 5 GHz W56 band, and 2.4 GHz band and connect to the wireless LAN router.

[0024] The repeater for wireless LAN of the present invention connects using the 6 GHz band LPI with a large communication capacity if the 6 GHz band can be used for connection to a host indoors. However, when the repeater for wireless LAN has a function that allows LPI / VLP settings for each connected terminal, the repeater for wireless LAN can also connect to the wireless LAN router using the 6 GHz band VLP. In a repeater for wireless LAN having such a function, when the wireless LAN router does not permit connection using the 6 GHz band VLP and is connected using the 5 GHz W56 band or 2.4 GHz band, the repeater for wireless LAN sends a connection request to the wireless LAN router using the 6 GHz band VLP. If the connection using the 6 GHz band VLP becomes possible, it again selects the optimal communication environment from among the connectable frequency bands of the 6 GHz band VLP, 5 GHz W56 band, and 2.4 GHz band and connects to the wireless LAN router. Thus, when the communication environment of the 6 GHz band VLP is optimal, the connection can be switched to the 6 GHz band VLP to increase the communication capacity between the wireless LAN router and the repeater for wireless LAN.

[0025] Even in a repeater for wireless LAN that does not have a function that allows LPI / VLP settings for each connected terminal, for example, when there is no host that can communicate in the 6 GHz band in the host of the repeater for wireless LAN, when it is not necessary to use the 6 GHz band LPI for connection to the host, or when it is desired to prioritize and increase the communication capacity between the repeater for wireless LAN and the wireless LAN router over the communication capacity between the repeater for wireless LAN and the host, the repeater for wireless LAN may send a connection request to the wireless LAN router using the 6 GHz band VLP. However, it is not a standard function but a unique function of the wireless LAN router to accept connection requests in the 6 GHz band VLP. Therefore, in order for the wireless LAN router to accept connection requests in the 6 GHz band VLP and permit connections in the 6 GHz band VLP, it is necessary to use a wireless LAN router equipped with the away-from-home mode.

[0026] (4) The wireless LAN repeater according to the fourth invention is a wireless LAN repeater according to one aspect. When it is connected to a wireless LAN router in the 5 GHz W56 band and the connection in the 5 GHz W56 band becomes impossible, it attempts to connect to another channel in the 5 GHz W56 band. If it cannot connect to another channel in the 5 GHz W56 band, it may select an optimal communication environment from among the connectable frequency bands of the 6 GHz band VLP and the 2.4 GHz band and connect to the wireless LAN router.

[0027] When the wireless LAN repeater is connected to the wireless LAN router on a channel in the 5 GHz W56 band, the wireless LAN router monitors radar waves. When radar waves are detected, it stops the connection on the connected channel in the 5 GHz W56 band and transmits to the wireless LAN repeater that communication is possible on any one of the 6 GHz band VLP, another channel in the 5 GHz W56 band, and / or the 2.4 GHz band. In this case, the wireless LAN repeater first attempts to connect to another channel in the 5 GHz W56 band. If the connection is possible, it continues the connection on the other channel. On the other hand, if it is impossible to connect to another channel in the 5 GHz W56 band, it selects an optimal communication environment from among the connectable frequency bands of the 6 GHz band VLP and the 2.4 GHz band and connects to the wireless LAN router. Giving priority to connecting to another channel in the 5 GHz W56 band is to avoid increasing the processing load of the wireless LAN repeater by returning to the startup state every time radar waves are detected, and to avoid affecting the communication between the wireless LAN repeater and the first host due to changes in the connection with the first host.

[0028] (5) The repeater for wireless LAN according to the fifth invention is a repeater for wireless LAN according to one aspect. When the repeater for wireless LAN is connected to the wireless LAN router in the 5GHz W56 band and the connection in the 5GHz W56 band becomes impossible, it connects to the wireless LAN router in the 6GHz band VLP or 2.4GHz band, and investigates the possibility of connection in another channel of the 5GHz W56 band. When the connection in another channel of the 5GHz W56 band becomes possible, it may select the optimal communication environment from among the connectable frequency bands of the 6GHz band VLP, 5GHz W56 band, and 2.4GHz band again and connect to the wireless LAN router.

[0029] In the repeater for wireless LAN according to the fourth invention, first, an attempt is made to connect in another channel of the 5GHz W56 band. If the connection is possible, by connecting in another channel, an increase in the processing amount of the repeater for wireless LAN and an impact on the communication between the repeater for wireless LAN and the first host are suppressed. However, in this case, in order to connect in another channel, it is necessary to confirm that there is no radar radio wave for at least one minute. Therefore, the connection between the wireless LAN router and the repeater for wireless LAN stops for at least one minute. In the repeater for wireless LAN according to the fifth invention, in order to avoid this one-minute communication stop, first, it connects to the wireless LAN router in the 6GHz band VLP or 2.4GHz band, and investigates the possibility of connection in another channel of the 5GHz W56 band in parallel. When the connection in another channel of the 5GHz W56 band becomes possible, it selects the optimal communication environment from among the connectable frequency bands of the 6GHz band VLP, 5GHz W56 band, and 2.4GHz band again and connects to the wireless LAN router. When the connection in another channel of the 5GHz W56 band becomes possible, the connection to the wireless LAN router may be switched to another channel of the 5GHz W56 band.

[0030] (6) The repeater for wireless LAN according to the sixth invention is a repeater for wireless LAN according to one aspect, which checks whether it is possible to connect to a wireless LAN router in the 6 GHz band VLP and the 5 GHz W56 band at a predetermined time interval. When either the 6 GHz band VLP or the 5 GHz W56 band becomes connectable from being unconnectable, it may select an optimal communication environment from among the connectable frequency bands of the 6 GHz band VLP, the 5 GHz W56 band, and the 2.4 GHz band again and connect to the wireless LAN router.

[0031] Even when, at startup, an optimal communication environment is selected and connected from among the connectable frequency bands of the 6 GHz band VLP, the 5 GHz W56 band, and the 2.4 GHz band, after a predetermined time has elapsed, either the 6 GHz band VLP or the 5 GHz W56 band may be changed from being unconnectable to being connectable. For example, when a mobile device such as a smartphone connected to a wireless LAN router in the 6 GHz band LPI goes out with the user, or when the radar radio wave is interrupted depending on the time zone. Therefore, it is desirable to check whether it is possible to connect to a wireless LAN router in the 6 GHz band VLP and the 5 GHz W56 band, and when either the 6 GHz band VLP or the 5 GHz W56 band is changed from being unconnectable to being connectable, to return to the startup in the away-from-home mode, select an optimal communication environment, and reconnect. Note that the predetermined time in this case is, for example, 30 minutes.

[0032] (7) The repeater for wireless LAN according to the seventh invention is a repeater for wireless LAN according to one aspect, which has a plurality of SSIDs. The SSID for connection to a wireless LAN router may correspond to the 6 GHz band VLP, and the SSID for connection to the first host may correspond to the 6 GHz band LPI.

[0033] In this case, by making the wireless LAN router connected via the outdoor communication path belong to an SSID compatible with 6 GHz band VLP, and making the first host connected via the indoor communication path belong to an SSID compatible with 6 GHz band LPI, it is possible to surely avoid violating the law and maximize the communication capacity to the first host.

[0034] (8) The wireless LAN router according to the eighth invention is a wireless LAN router having a remote mode that is connected via a wireless LAN repeater and an outdoor communication path and is used when connected to a second host via an indoor communication path, and includes one wireless communication circuit capable of communicating in the 2.4 GHz band, a wireless communication circuit capable of communicating in the 5 GHz band, one wireless communication circuit capable of communicating in the 6 GHz band, and a network circuit connectable to wired WAN and LAN. One wireless communication circuit capable of communicating in the 6 GHz band is configured to be selectable and communicable from 6 GHz band VLP and 6 GHz band LPI for each connection terminal of the wireless LAN repeater and the second host. However, when the wireless LAN router is a wireless LAN access point, the network circuit may not be provided.

[0035] In this case, if the wireless LAN router is set to the remote mode, for example, it can be connected to the wireless LAN repeater connected via the outdoor communication path in 6 GHz band VLP and connected to the second host connected via the indoor communication path in 6 GHz band LPI. Therefore, it is possible to provide the maximum communication capacity to the wireless LAN repeater and the second host without violating the law. In addition, when the wireless LAN repeater also has a remote mode, it is possible to receive a notification that it is connected via the outdoor communication path from the wireless LAN repeater. Generally, however, it is not known whether the connection to the wireless LAN repeater is via the outdoor communication path. In this case, it may be possible to input the MAC address of the connection terminal via the outdoor communication path when the wireless LAN router is started up. In addition, since it is possible to communicate in both 6 GHz band VLP and 6 GHz band LPI using one wireless communication circuit capable of communicating in the 6 GHz band, the circuit scale of the wireless LAN router can be suppressed. Regarding the wireless LAN router as well, by providing two or more wireless communication circuits capable of communicating in the 5 GHz band, in the 5 GHz communication, the connection to the wireless LAN repeater can be set to W56, and the connection to the second host can be set to W52 or W53.

[0036] (9) The wireless LAN router according to the ninth invention may be the wireless LAN router according to the eighth invention, and may be provided with a plurality of SSIDs, where the SSID for the connection to the wireless LAN repeater corresponds to 6 GHz band VLP, and the SSID for the connection to the second host corresponds to 6 GHz band LPI.

[0037] In this case, by making the wireless LAN repeater connected via the outdoor communication path belong to the SSID corresponding to 6 GHz band VLP, and making the second host connected by the indoor communication path belong to the SSID corresponding to 6 GHz band LPI, it is possible to surely avoid violating the law and maximize the communication capacity to the second host.

[0038] (10) The wireless LAN router according to the tenth invention may be the wireless LAN router according to the eighth invention, and may identify the second host and the wireless LAN repeater by receiving identification information from the wireless LAN repeater.

[0039] Both the second host and the wireless LAN repeater can be connected to the wireless LAN router as connection terminals, but from the perspective of the wireless LAN router, there may be a case where it is impossible to identify which connection terminal is the second host and which connection terminal is the wireless LAN repeater. According to the tenth invention, a wireless LAN repeater transmits identification information indicating that it is a wireless LAN repeater corresponding to the away-from-home mode, and a wireless LAN router can identify which connected terminal is the wireless LAN repeater by receiving this identification information. Therefore, without the user having to perform a setting in advance for identifying the wireless LAN repeater (a setting for registering the MAC address, IP address, SSID, etc. of the wireless LAN repeater), it is possible to identify which connected terminal is the second host capable of communicating via the indoor communication path, or which connected terminal is the wireless LAN repeater that needs to communicate via the outdoor communication path. Thus, an appropriate communication method can be automatically selected. Note that, from one aspect, any of the wireless LAN repeaters according to the seventh invention may be capable of transmitting this identification information, and any of the wireless LAN routers according to the eighth to eleventh inventions may be capable of receiving this identification information and identifying the second host and the wireless LAN repeater.

[0040] (11) The wireless LAN router according to the eleventh invention is a wireless LAN router having an away-from-home mode used when connected to a wireless LAN repeater via an outdoor communication path and to a second host via an indoor communication path, and includes a wireless communication circuit capable of communicating in the 2.4 GHz band, a wireless communication circuit capable of communicating in the 5 GHz band, a wireless communication circuit capable of communicating in the 6 GHz band, and a network circuit connectable to a wired WAN and LAN. The wireless communication circuit capable of communicating in the 6 GHz band is configured to be capable of communicating with all connected terminals of the wireless LAN repeater and the second host only in one of the 6 GHz band VLP and the 6 GHz band LPI. When it is required to be connectable from the wireless LAN repeater in the 6 GHz band VLP and the wireless LAN router is not connected to the second host in the 6 GHz band LPI, the 6 GHz band communication is switched from LPI to VLP.

[0041] A wireless LAN router typically communicates with a second host in 6 GHz band LPI. In this case, a wireless LAN router configured to be able to communicate with only one of 6 GHz band VLP and 6 GHz band LPI for all connection terminals of the wireless LAN repeater and the second host cannot be connected at 6 GHz to a wireless LAN repeater connected via an outdoor communication path. However, for example, if the wireless LAN router is not connected to the second host in 6 GHz LPI because the second host does not have a wireless communication circuit capable of communicating in the 6 GHz band, the communication capacity with the wireless LAN repeater can be increased by switching the 6 GHz band communication of the wireless LAN router from LPI to VLP. Also, in a wireless LAN router configured to be able to communicate with only one of 6 GHz band VLP and 6 GHz band LPI for all connection terminals of the wireless LAN repeater and the second host, if it is desired to prioritize an increase in the communication capacity between the wireless LAN router and the wireless LAN repeater, all 6 GHz band communications, including the communication with the second host, may be set to VLP. Note that if the wireless LAN repeater also has a remote home mode, it is possible to receive a notification that it is connected via an outdoor communication path from the wireless LAN repeater, but generally it is not known whether the connection to the wireless LAN repeater is via an outdoor communication path. In this case, the MAC address of a terminal connected via an outdoor communication path may be input when the wireless LAN router is started up.

[0042] (12) The wireless LAN system according to the 12th invention is composed of a wireless LAN router according to any one of the 8th to 11th inventions and a second host arranged in the main house, and a wireless LAN repeater according to any one of the 1st to 7th inventions and a first host arranged in a detached house. The wireless LAN router and the wireless LAN repeater are both set to the detached house mode, connected via an outdoor communication path, the wireless LAN router is connected to the second host via an indoor communication path, and the wireless LAN repeater is connected to the first host via an indoor communication path.

[0043] When the wireless LAN router or the wireless LAN repeater has a detached house mode, by setting the wireless LAN router or the wireless LAN repeater to the detached house mode, it is possible to have no impact on the satellite communication system and the weather radar, no violation of laws, and to configure a communication system with the maximum communication capacity. Note that, as depicted in FIG. 16, when generally one dwelling is composed of two or more independent buildings, the main building among them corresponds to the main house, and the smaller-scale building corresponds to the detached house. However, in this specification, among two or more independent buildings, regardless of the scale of the building, the building in which the wireless LAN router is arranged is the main house.

[0044] However, when both the wireless LAN router and the wireless LAN repeater have a detached house mode, by setting both the wireless LAN router and the wireless LAN repeater to the detached house mode, the following effects can be obtained. 1) When the wireless LAN router and the wireless LAN repeater are communicating in the 5GHz W56 band or the 2.4GHz band, the wireless LAN repeater sends a connection request in the 6GHz band VLP to the wireless LAN router, and the wireless LAN router receives this connection request. When the wireless LAN router is capable of LPI / VLP connection for each terminal, or when there is no other terminal connecting with 6GHz LPI, etc., it is possible to enable a connection in the 6GHz band VLP. (2) The repeater for a wireless LAN can transmit identification information indicating that the repeater for a wireless LAN is connected to the router for a wireless LAN via an outdoor communication path. Since the router for a wireless LAN does not permit communication in the 6 GHz band LPI, 5 GHz W52 band, and W53 band where communication via the outdoor communication path is not permitted for the repeater for a wireless LAN, it is possible to more reliably eliminate violations of laws and regulations. Note that the above (1) and (2) are not standard functions of the wireless LAN system but are unique functions.

[0045] (13) The wireless LAN system according to the 13th invention is the wireless LAN system according to the 12th invention, wherein the router for a wireless LAN and the repeater for a wireless LAN each have a plurality of SSIDs. The SSID for the connection between the router for a wireless LAN and the second host is the same as the SSID for the connection between the repeater for a wireless LAN and the first host, and the SSID for the connection between the router for a wireless LAN and the repeater for a wireless LAN may be different from the same SSID.

[0046] In this case, since the same SSID is set for the first host and the second host, even when the host (e.g., smartphone) used in the main house moves away from home, the wireless LAN connection can be continued as it is. Also, since the SSID for the connection between the router for a wireless LAN and the repeater for a wireless LAN is different from the SSID for the connection between the router for a wireless LAN or the repeater for a wireless LAN and the host, the connection between the router for a wireless LAN and the repeater for a wireless LAN can be made suitable for optimal communication (e.g., VLP) for outdoor communication, and the connection between the router for a wireless LAN or the repeater for a wireless LAN and the host can be made suitable for optimal communication (e.g., LPI) for indoor communication.

[0047] (14) The wireless LAN system according to the 14th invention is the wireless LAN system according to the 12th invention, wherein the wireless communication circuit in the 5 GHz band of the wireless LAN repeater has a radar wave detection circuit, and when the wireless LAN repeater detects the radar wave in the 5 GHz W56 band, the wireless LAN repeater transmits the radar wave detection information to the wireless LAN router, and the wireless LAN router may determine that the radar wave has been detected.

[0048] In the wireless LAN system according to the 12th invention, the wireless LAN router may be placed at a location far from the outer wall such as the center of the main house, and the wireless LAN repeater may be placed near the outer wall of the detached house. In such a case, the radar wave detection circuit of the wireless LAN router may not detect the radar wave, but the radar wave detection circuit of the wireless LAN repeater may detect the radar wave. In the wireless LAN system according to the 14th invention, when the wireless LAN repeater detects the radar wave in the 5 GHz W56 band, by transmitting the radar wave detection information from the wireless LAN repeater to the wireless LAN router, the wireless LAN router can surely stop using the channel when the radar wave arrives. Note that this radar wave detection information transmission function is not a standard function of the wireless LAN system but an original function.

[0049] (15) The wireless LAN system according to the 15th invention is composed of a wireless LAN router and a second wireless LAN repeater arranged in the main house, and a first wireless LAN repeater and a first host according to any one of the 1st to 7th inventions arranged in the detached house. The second wireless LAN repeater and the wireless LAN router are connected by an indoor communication path. The first wireless LAN repeater is set to the detached house mode and is connected to the second wireless LAN repeater via an outdoor communication path and is also connected to the first host by an indoor communication path.

[0050] In this case, by providing a wireless LAN router and a second wireless LAN repeater in the main house, communication can be established with a wider range of hosts and a larger number of hosts arranged within the same main house.

[0051] (16) The wireless LAN system according to the 16th invention includes a wireless LAN router according to any one of the 8th to 11th inventions arranged in the main house, a first wireless LAN repeater according to any one of the 1st to 7th inventions arranged in a detached house, a third wireless LAN repeater, and a first host. The wireless LAN router and the first wireless LAN repeater are set to the detached house mode and are connected via an outdoor communication path. The third wireless LAN repeater is connected to the first wireless LAN repeater via an indoor communication path and is also connected to the first host via an indoor communication path.

[0052] In this case, by providing the first wireless LAN repeater and the third wireless LAN repeater in the detached house, communication can be established with a wider range of hosts and a larger number of hosts arranged within the same detached house.

[0053] (17) The wireless LAN system according to the 17th invention includes a wireless LAN router according to any one of the 8th to 11th inventions arranged in the main house, a fourth wireless LAN repeater according to any one of the 1st to 7th inventions arranged in a first detached house, a first wireless LAN repeater according to any one of the 1st to 7th inventions and a first host arranged in a second detached house. The wireless LAN router and the fourth wireless LAN repeater are set to the detached house mode and are connected via an outdoor communication path. The first wireless LAN repeater is set to the detached house mode and is connected to the fourth wireless LAN repeater via an outdoor communication path and is also connected to the first host via an indoor communication path.

[0054] In this case, by placing the wireless LAN router according to any one of the eighth to eleventh inventions in the main building, placing the first wireless LAN repeater according to any one of the first to seventh inventions in the first detached house, and further placing the fourth wireless LAN repeater according to any one of the first to seventh inventions in the second detached house, the hosts of three mutually independent buildings can be connected to one router.

Brief Description of the Drawings

[0055]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Embodiments for Carrying Out the Invention

[0056] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Also, in the case of the same reference numerals, their names and functions are also the same. Therefore, detailed descriptions thereof will not be repeated.

[0057] [Wireless LAN System 1000] FIG. 1 is a schematic configuration diagram of a wireless LAN system 1000 including a wireless LAN router 200, a wireless LAN repeater 100, and hosts 300 and 300a. In FIG. 1, the wireless LAN router 200 is disposed in a first building (hereinafter referred to as the main house 400), and the wireless LAN repeater 100 is disposed in a second building (hereinafter referred to as the detached house 500). In the present embodiment, an ONU or the like of an optical line is provided in the main house 400, and there is an environment enabling wired Internet connection, while there is no wired Internet environment in the detached house 500. And the first host 300 in the detached house 500 is in a situation where it cannot communicate directly with the wireless LAN router 200 in the main house 400, or even if it can be connected, the radio wave is weak, the connection is unstable, and a sufficient communication speed cannot be obtained. Note that the hosts 300 and 300a are, for example, personal computers, printers, smartphones, etc. equipped with a wireless LAN. Since the wireless LAN router 200 and the wireless LAN repeater 100 are disposed in separate buildings, communication is performed via an outdoor communication path 600. Since the wireless LAN router 200 and the second host 330a, and the wireless LAN repeater 100 and the first host 300 are disposed inside the same building, communication is performed via an indoor communication path 700.

[0058] When using a frequency in the 6 GHz band for the wireless LAN, in the indoor environment, LPI with an equivalent isotropic radiated power (EIRP) of up to 200 mW and VLP with an EIRP of up to 25 mW can be used, but outdoors, only VLP with an EIRP of up to 25 mW can be used. On the other hand, in the 5 GHz band, only the W56 band can be used outdoors, and moreover, there is a regulation that when detecting radar radio waves, it is necessary to move to another channel. The wireless LAN repeater 100 and the wireless LAN router 200 constituting the present wireless LAN system 1000 ensure compliance with the regulations based on the above laws and regulations, and aim to maximize the communication capacity (speed) between the wireless LAN router 200 and the wireless LAN repeater 100, and between the wireless LAN repeater 100 and the first host 300.

[0059] [Repeater 100 for Wireless LAN of the First Embodiment] FIG. 2 is a schematic block diagram of a repeater 100 for a wireless LAN according to the first embodiment. As shown in FIG. 2, the repeater 100 for a wireless LAN includes a 2.4 GHz band wireless communication circuit 10, a 5 GHz band wireless communication circuit 20, a 6 GHz band wireless communication circuit 30, a control circuit 40, and a data buffer 50. Further, the 2.4 GHz band wireless communication circuit 10, the 5 GHz band wireless communication circuit 20, and the 6 GHz band wireless communication circuit 30 are each provided with an antenna 11, 21, and 31. For the 2.4 GHz band and the 5 GHz band, it is also possible to share the antenna by inserting an antenna switch (not shown) between the antenna and the wireless communication circuit. The 5 GHz band wireless communication circuit 20 includes a radar wave detection circuit 22.

[0060] The radar wave detection circuit 22 monitors the radar wave when the repeater 100 for a wireless LAN communicates with the first host 300 in the 5 GHz W53, W56 bands, and when the radar wave is detected, it shifts to another channel or another frequency band. This is for the DFS function. Since the repeater 100 for a wireless LAN is connected to the wireless LAN router 200 via the outdoor communication path 600, it is considered that the transmission radio wave of the repeater 100 for a wireless LAN leaks outdoors. Therefore, for example, when the repeater 100 for a wireless LAN is connected to the wireless LAN router 200 in the 6 GHz band VLP and a radar wave in the 5 GHz W56 band arrives, if the repeater 100 for a wireless LAN connects to the first host 300 in the 5 GHz W56 band, it may violate the law. When the radar wave detection circuit 22 of the 5 GHz band wireless communication circuit 20 of the present invention detects a radar wave, the repeater 100 for a wireless LAN does not communicate on the channel where the radar wave is detected during the non-occupancy period in the communication with the host 300, thereby preventing the possibility of violating the law. The non-occupancy period (NOP: Non-Occupancy Period) is the period during which the channel cannot be used when a radar wave is detected, and is, for example, 30 minutes.

[0061] When there is one wireless communication circuit for each, it can communicate in only one channel in each of the 2.4 GHz band, 5 GHz band, and 6 GHz band. Therefore, for example, when the communication between the wireless LAN router 200 and the wireless LAN repeater 100 (hereinafter also referred to as a backhaul) is performed in one channel of the 2.4 GHz band, the communication between the wireless LAN router 200 and the host 300 can be performed in any one of the same channel as the 2.4 GHz band backhaul, any channel of the 5 GHz band, and any channel of the 6 GHz band, but it cannot communicate in a channel different from the backhaul in the 2.4 GHz band. This is to limit the communication channel in each frequency band of the wireless LAN repeater 100 to one and simplify the circuit of the wireless LAN repeater 100. However, in the 5 GHz band, by providing two wireless communication circuits, the backhaul can be set to W56, and the connection to the host can be set to W52 or W53. The control circuit 40 controls each wireless communication circuit based on the flowchart described later, temporarily stores the information of the received packet in the data buffer 50, reconstructs it, and retransmits it to a predetermined destination.

[0062] (Flowchart of the First Embodiment) FIG. 3, FIG. 4, and FIG. 5 are schematic flowcharts showing the operation of the wireless LAN repeater 100 at startup in the first embodiment. Among these, FIG. 3 is a flowchart when the wireless LAN repeater 100 can select LPI and VLP for each terminal (wireless LAN router 200 and first host 300) in 6 GHz band communication. Also, FIGS. 4 and 5 are flowcharts when the wireless LAN repeater 100 cannot select LPI and VLP for each terminal in 6 GHz band communication. Among them, FIG. 4 is for the case of connection priority with the wireless LAN router 200 (when connected to the wireless LAN router 200 with VLP, it does not connect with the first host 300 using LPI), and FIG. 5 is for the case of connection priority with the first host 300 (when connected to the first host 300 using LPI, it does not connect with the wireless LAN router 200 in 6 GHz). Further, FIG. 6 is a flowchart when the wireless LAN repeater 100 is connected to the wireless LAN router 200 with 6 GHz band VLP and connection in the 5 GHz W56 band becomes possible, or when connected in the 5 GHz W56 band and connection in the 6 GHz band VLP becomes possible, and it reselects the optimal communication environment again. Note that as a method of selecting LPI and VLP for communication for each terminal, it may be configured to select LPI and VLP every time communication with the terminal starts. However, for example, the wireless LAN repeater 100 may be provided with a plurality of SSIDs (Service Set Identifiers), and terminals communicating with LPI and terminals connecting with VLP may be made to belong to different SSIDs respectively. Hereinafter, the operation of the wireless LAN repeater 100 at startup will be described based on each figure.

[0063] (Explanation of the flowchart in FIG. 3) FIG. 3 is a flowchart when the wireless LAN repeater 100 can select LPI and VLP for each terminal (wireless LAN router 200 and first host 300) in 6 GHz band communication. The repeater 100 for wireless LAN in the first embodiment first checks whether it can detect the SSID in the 6 GHz band from the wireless LAN router 200 at startup (step S1). If the SSID in the 6 GHz band is detected, it checks whether it can connect to the wireless LAN router 200 with the 6 GHz band VLP (step S2). If it can connect with the 6 GHz band VLP, it further checks whether it can also connect in the 5 GHz W56 band (step S3). If it can connect to the wireless LAN router 200 with either the 6 GHz band VLP or the 5 GHz W56 band, it selects the optimal communication environment from the 6 GHz band VLP and the 5 GHz W56 band and connects to the wireless LAN router 200 (step S5). In the selection of the optimal communication environment, it is judged by, for example, the magnitude of the communication capacity, the error rate, etc. In step S3, if it cannot connect in the 5 GHz W56 band, it checks whether it can connect to the wireless LAN router 200 in the 2.4 GHz band (step S4). If it can connect to the wireless LAN router 200 with either the 6 GHz band VLP or the 2.4 GHz band, it selects the optimal communication environment from the 6 GHz band VLP and the 2.4 GHz band and connects to the wireless LAN router 200 (step S6). In step S4, if it cannot connect in the 2.4 GHz band, it connects to the wireless LAN router 200 with the 6 GHz band VLP (step S7).

[0064] When the connection to the wireless LAN router 200 is completed, it broadcasts the SSIDs in the 6 GHz band LPI, 5 GHz band, and 2.4 GHz band toward the first host 300 and connects to the first host 300 according to the request of the first host 300. In the frequency band connected to the wireless LAN router 200, the connection to the wireless LAN router 200 and the connection to the first host 300 must be on the same channel. Note that when comparing the communication environments of 6 GHz band VLP with the 5 GHz W56 band or the 2.4 GHz band, originally, the 6 GHz band VLP with a wider frequency band should have the best communication environment. However, the 6 GHz band VLP has a small EIRP, and depending on the distance between the wireless LAN router 200 and the wireless LAN repeater 100, and the presence or absence of obstacles in the middle, the communication environment of the 5 GHz W56 band or the 2.4 GHz band may be better.

[0065] In step S2, when connection with the 6 GHz band VLP is not possible, the wireless LAN repeater 100 checks whether it can connect to the wireless LAN router 200 in the 5 GHz W56 band (step S9). If connection in the 5 GHz W56 band is possible, it connects to the wireless LAN router 200 in the 5 GHz W56 band (step S11). In step S9, when connection in the 5 GHz W56 band is not possible, it checks whether connection in the 2.4 GHz band is possible (step S10). If connection in the 2.4 GHz band is possible, it connects to the wireless LAN router 200 in the 2.4 GHz band (step S12). In step S10, when connection in the 2.4 GHz band is also not possible, it returns to step S1 again. In this case, it may be possible to set a delay time until starting the startup again, or the maximum number of repetitions when repeating the startup.

[0066] After the connection with the wireless LAN router 200 is completed, it broadcasts the SSIDs of the 6 GHz band LPI, 5 GHz band, and 2.4 GHz band to the first host 300, and connects to the first host 300 according to the request of the first host 300. After the connection with the first host 300, the wireless LAN repeater 100 may request the wireless LAN router 200 to change from the 6 GHz band LPI to the 6 GHz band VLP (or add the 6 GHz band VLP) (step S14). If connection in the 6 GHz band VLP becomes possible, return to step S3, select the optimal communication environment among the 6 GHz band VLP, 5 GHz W56 band, and 2.4 GHz band, and reconnect to the wireless LAN router 200 (step S15). This function is effective when the wireless LAN router 200 does not broadcast the SSID of the 6 GHz band VLP even though it is capable of connecting in the 6 GHz band VLP. However, since this function is not a standardized function of the wireless LAN, the wireless LAN router 200 also needs to have a leave-home mode (a proprietary function). This function will be described again based on FIG. 10.

[0067] In step S1, if the SSID of the 6 GHz band from the wireless LAN router 200 cannot be detected, check for connection in the 5 GHz W56 band (step S16). If connection is possible in the 5 GHz W56 band, connect in the 5 GHz W56 band (step S18). If connection is not possible in the 5 GHz W56 band, check for connection in the 2.4 GHz band (step S17). If connection is possible in the 2.4 GHz band, connect in the 2.4 GHz band (step S19). In step S17, if connection is not possible even in the 2.4 GHz band, return to step S1 again. In this case, it may be possible to set a delay time until starting the startup again, or the maximum number of repetitions when repeating the startup. After the connection to the wireless LAN router 200 is completed, broadcast the SSIDs of the 6 GHz band LPI, 5 GHz band, and 2.4 GHz band toward the first host 300, and connect to the first host 300 according to the request of the first host 300.

[0068] (Explanation of the flowchart in FIG. 4) Figure 4 is a flowchart showing a case where the repeater 100 for wireless LAN cannot select LPI and VLP for each terminal (wireless LAN router 200 and first host 300) in 6 GHz band communication, and where connection priority is given to the wireless LAN router 200 (when connected to the wireless LAN router 200 with VLP, it does not connect to the first host 300 with LPI). In Figure 4, steps with the same numbers as in Figure 3 represent the same operations as in Figure 3. In the flowchart of Figure 4, after determining the connection method to the wireless LAN router 200 in S3 to S7, it is checked whether the repeater 100 for wireless LAN is connected to the wireless LAN router 200 with 6 GHz VLP (step S8a). If it is connected to the wireless LAN router 200 with 6 GHz VLP, it does not connect to the first host 300 with 6 GHz LPI (step S8c). If it is not connected to the wireless LAN router 200 with 6 GHz band VLP, it connects to the first host 300 with 6 GHz LPI (step S8b), which is different. In step S8a, the fact that the repeater 100 for wireless LAN is connected to the wireless LAN router 200 with 6 GHz VLP means that the connection environment between the repeater 100 for wireless LAN and the wireless LAN router 200 is optimal. Therefore, in cases such as when downloading a large amount of data from the Internet, even if the communication capacity between the repeater 100 for wireless LAN and the first host 300 decreases by using 6 GHz band VLP for the connection between the repeater 100 for wireless LAN and the first host 300, it is considered more preferable overall.

[0069] (Explanation of the flowchart in Figure 5) Figure 5 is a flowchart showing a case where the repeater 100 for wireless LAN cannot select LPI and VLP for each terminal (wireless LAN router 200 and first host 300) in 6 GHz band communication, and where connection priority is given to the first host 300 (when connected to the first host 300 with LPI, it does not connect to the wireless LAN router 200 at 6 GHz). In Figure 5 as well, steps with the same numbers as in Figure 3 represent the same operations as in Figure 3. When the first hosts 300 exchange a large amount of data with each other via the wireless LAN repeater 100, the flowchart with connection priority to the first host 300 in FIG. 5 is more desirable than the flowchart in FIG. 4. In the flowchart of FIG. 5, after determining the connection method to the wireless LAN router 200 in S3 to S7, it is checked whether there is a connection request from the first host 300 in the 6 GHz band LPI (step S7a). If there is a connection request in the 6 GHz band LPI, it is checked whether the wireless LAN router 200 is connected in the 6 GHz band VLP (step S7b). If the wireless LAN router 200 is connected in the 6 GHz band VLP, the connection in the 5 GHz W56 band is checked (step S7c). If it is possible to connect in the 5 GHz W56 band, the connection is switched to the 5 GHz W56 band (step S7d). If it is not possible to connect in the 5 GHz W56 band, the connection is switched to the 2.4 GHz band (step S7e). Then, in response to the request of the first host 300, it connects to the first host 300 in either the 6 GHz band LPI, 5 GHz W56 band, or 2.4 GHz band (step S8d). On the other hand, in step S7a, if there is no connection request from the first host 300 in the 6 GHz band LPI, it connects to the first host 300 in either the 5 GHz W56 band or 2.4 GHz band in response to the request of the first host 300 (step S8e).

[0070] (Description of the flowchart in FIG. 6) FIG. 6 is a flowchart for reselecting the optimal communication environment when the wireless LAN repeater 100 is connected to the wireless LAN router 200 in the 6 GHz band VLP and the connection in the 5 GHz W56 band becomes possible, or when the connection in the 5 GHz W56 band is made and the connection in the 6 GHz band VLP becomes possible. In FIG. 6, when the repeater 100 for wireless LAN is not connected to the router 200 for wireless LAN by 6 GHz band VLP (step S31), it is confirmed whether connection by 6 GHz band VLP is possible (step S32). If the connection is possible, the repeater 100 for wireless LAN is restarted according to the flowcharts of FIGS. 3 to 5 from step S1 (step S35). In step S32, when connection by 6 GHz band VLP is impossible and the connection is not made even in the 5 GHz W56 band (for example, when the connection is made in the 2.4 GHz band, etc.) (step S33), it is confirmed whether connection is possible in the 5 GHz W56 band (step S34). If the connection is possible, the repeater 100 for wireless LAN is restarted (step S35). In other cases, the repeater 100 for wireless LAN continues the current state. Note that this operation of reselecting the optimal communication environment again may cause confusion in the connection between the repeater 100 for wireless LAN and the router 200 for wireless LAN and the connection between the repeater 100 for wireless LAN and the first host 300 if performed frequently. Therefore, it is desirable to limit it to a predetermined time interval, for example, about once every 30 minutes.

[0071] [Wireless LAN Router 200 of the Second Embodiment] FIG. 7 is a schematic block diagram of the wireless LAN router 200 of the second embodiment. As shown in FIG. 7, the wireless LAN router 200 includes a 2.4 GHz band wireless communication circuit 10a, a 5 GHz band wireless communication circuit 20a, a 6 GHz band wireless communication circuit 30a, a control circuit 40a, a data buffer 50a, and a network circuit 60. Further, the 2.4 GHz band wireless communication circuit 10a, the 5 GHz band wireless communication circuit 20a, and the 6 GHz band wireless communication circuit 30a are each provided with antennas 11a, 21a, and 31a. For the 2.4 GHz band and the 5 GHz band, it is also possible to share the antennas by inserting an antenna switch (not shown) between the antenna and the wireless communication circuit. The 5 GHz band wireless communication circuit 20a is provided with a radar wave detection circuit 22a. Note that the wireless LAN router 200 of the second embodiment refers to the master unit of the wireless LAN, and includes a wireless LAN access point that does not have a router function. However, when the wireless LAN router 200 is a wireless LAN access point, the network circuit 60 may not be provided. The radar radio wave detection circuit 22a monitors the radar radio wave when the wireless LAN router 200 communicates with the wireless LAN repeater 100 and the second host 300a in the 5 GHz W53 and W56 bands, and when the radar radio wave is detected, it shifts to another channel or another frequency band for the DFS function. Furthermore, the wireless LAN router 200 includes a WAN side connection terminal 61 and a LAN side connection terminal 62, and the WAN side connection terminal 61 is connected to the Internet via an ONU of an optical line or the like.

[0072] (Flowchart of the Second Embodiment) Both FIG. 8 and FIG. 9 are flowcharts at the time of starting up the wireless LAN router 200 in the away-from-home mode. FIG. 8 is a flowchart when the wireless LAN router 200 has a function capable of LPI / VLP setting for each connection terminal, and FIG. 9 is a flowchart when the wireless LAN router 200 is not capable of LPI / VLP setting for each connection terminal. Hereinafter, the operation at the time of starting up the wireless LAN router 200 will be described based on each figure.

[0073] (Explanation of the Flowchart of FIG. 8) When starting up the wireless LAN router 200 in the away-from-home mode, first, the MAC address etc. of the wireless LAN repeater 100 located in the away-from-home 500 and connected via the outdoor communication path 600 are specified (step S41). However, when the wireless LAN repeater 100 is also set to the away-from-home mode, identification information may be received from the wireless LAN repeater 100. Next, the wireless LAN router 200 outputs the SSIDs of the 6 GHz band LPI, 6 GHz band VLP, 5 GHz W56 band, and 2.4 GHz band (step S42). Next, if there is a connection request in the 6 GHz band LPI from any of the connection terminals of the wireless LAN repeater 100 and the second host 300a, and the terminal that issued the connection request is not the wireless LAN repeater 100 of the remote house 500 connected via an outdoor connection path, permit the connection in the 6 GHz band LPI (steps S43 to S45). Next, if there is a connection request in the 6 GHz band VLP from any of the connection terminals (step S46), permit the connection in the 6 GHz band LPI (step S47). Furthermore, if there is a connection request in the 5 GHz W56 band from any of the connection terminals (step S48), permit the connection in the 5 GHz W56 band (step S49), and if there is a connection request in the 2.4 GHz band from any of the connection terminals (step S50), permit the connection in the 2.4 GHz band (step S51).

[0074] Note that the reason the wireless LAN router 200 connects to the second host 300a in the W56 band at 5 GHz is to enable the simultaneous use of the 5 GHz band and the 6 GHz band for the connection between the wireless LAN router 200 and the wireless LAN repeater 100 when multi-link operation (MLO), which allows the simultaneous use of multiple frequency bands during connection, becomes available in future commercialized products such as WiFi7. Therefore, when MLO is not used, when the 5 GHz W56 band is not used for the connection between the wireless LAN router 200 and the wireless LAN repeater 100, or when the wireless LAN repeater 100 is equipped with two wireless communication circuits in the 5 GHz band and can communicate in both W56 and W52, W53, the communication in the 5 GHz band does not have to be limited to the W56 band. Also, when the wireless LAN router 200 does not have a connection terminal connected via an outdoor connection path such as the wireless LAN repeater 100, by starting the wireless LAN router 200 in the normal mode, it is possible to connect to the second host 300a in all frequency bands.

[0075] (Explanation of the flowchart in FIG. 9) FIG. 9 is a flowchart when the wireless LAN router 200 cannot perform LPI / VLP setting for each connected terminal. Therefore, the wireless LAN repeater 100 can be connected to the 6 GHz band VLP only when the wireless LAN router 200 is not connected to the second host 300a in the 6 GHz band LPI. Note that, also in FIG. 9, the steps with the same numbers as those in FIG. 8 show the same operations as those in FIG. 8. In this case, since the SSID transmitted first does not include the 6 GHz band VLP SSID (step S42a), when it is found that the 6 GHz band VLP is not used (No in step S43 or Yes in step S44), the 6 GHz band VLP SSID is transmitted again (step S42b). When there is a connection request in the 6 GHz band VLP from any connected terminal (step S46), the connection in the 6 GHz band VLP is permitted (step S47). Steps S48 to S51 are the same as those in FIG. 8.

[0076] [Wireless LAN System 1000] The configuration of the wireless LAN system 1000 is as shown in FIG. 1. Since the wireless LAN router 200 and the wireless LAN repeater 100 are arranged in separate buildings, communication is performed via the outdoor communication path 600. Since the wireless LAN router 200 and the second host 300a, and the wireless LAN repeater 100 and the first host 300 are arranged inside the same building, communication is performed via the indoor communication path 700. Even when only the wireless LAN repeater 100 or only the wireless LAN router 200 is set to the away mode, the object of the present invention to configure a communication system that does not violate the law and has the largest possible communication capacity can be achieved. However, when both the wireless LAN router 200 and the wireless LAN repeater 100 are set to the away mode, the effect can be further enhanced. Here, as the operation when both the wireless LAN router 200 and the wireless LAN repeater 100 are set to the away-from-home mode, the case where the wireless LAN repeater 100 issues a switching request from the 6 GHz band LPI to the 6 GHz band VLP to the wireless LAN router 200 will be described with reference to FIG. 10. Also, the case where the wireless LAN repeater 100 and the wireless LAN router 200 operate in cooperation when radar radio waves are detected will be described with reference to FIGS. 11 and 12.

[0077] (Switching Request and Response from 6 GHz Band LPI to 6 GHz Band VLP) FIG. 10 shows a flowchart for explaining the operation when the wireless LAN repeater 100 issues a switching request from the 6 GHz band LPI to the 6 GHz band VLP to the wireless LAN router 200. When the wireless LAN router 200 is connected to the wireless LAN repeater 100 in the 5 GHz W56 band or the 2.4 GHz band (step S51), and the wireless LAN router 200 receives a change request to the 6 GHz band VLP from the wireless LAN repeater 100 (step S52), the wireless LAN router 200 examines whether the 6 GHz band can be changed to VLP (step S53). Usually, if the wireless LAN router 200 is not connected to the second host 300a in the 6 GHz band LPI, it can be changed to VLP. If the 6 GHz band can be changed to VLP, the 6 GHz band is changed to VLP (step S54), an OK is returned to the wireless LAN repeater 100 (step S55), and if the change cannot be made, an NG is returned to the wireless LAN repeater 100 (step S56). Note that this flowchart is for the case where the wireless LAN router 200 cannot set the 6 GHz band VLP / LPI for each terminal. If the wireless LAN router 200 can set the 6 GHz band VLP / LPI for each terminal, step S53 is always Yes, and the wireless LAN router 200 only needs to add the 6 GHz band VLP (transmit the SSID including the 6 GHz band VLP) and return an OK to the wireless LAN repeater 100. When the wireless LAN system 1000 has this function, when there is no device in the second host 300a that communicates using LPI in the 6 GHz band, etc., when the wireless LAN router 200 and the wireless LAN repeater 100 can be connected using VLP in the 6 GHz band, they are surely connected using VLP in the 6 GHz band, and the communication capacity between the wireless LAN router 200 and the wireless LAN repeater 100 can be increased.

[0078] (Associated operation at the time of radar wave detection) Regarding the communication between the wireless LAN router 200 and the wireless LAN repeater 100, when the radar wave detection circuit 22a provided in the wireless LAN router 200 detects the radar wave, the wireless LAN router 200 does not perform communication on the channel where the radar wave is detected during the non-occupation period in the communication with the wireless LAN repeater 100 and the second host 300a, thereby preventing the possibility of violating the law. However, there may be a case where the wireless LAN router 200 is placed at a location far from the outer wall of the main house 400 and the wireless LAN repeater 100 is placed near the outer wall of the detached house 500. In such a case, the radar wave detection circuit 22a of the wireless LAN router 200 may not be able to detect the radar wave, while the radar wave detection circuit 22 of the wireless LAN repeater 100 may detect the wave. In the wireless LAN system 1000 of the present invention, when both the wireless LAN router 200 and the wireless LAN repeater 100 are set to the detached house mode, in order to operate the DFS function so as not to violate the law even in such a case, the operations shown in FIG. 11 or FIG. 12 are performed.

[0079] In FIG. 11, when the radar wave detection circuit 22 of the wireless LAN repeater 100 detects the radar wave (step S61), the wireless LAN repeater 100 transmits the radar wave detection information to the wireless LAN router 200 (step S62). When the wireless LAN router 200 receives transmission of radar radio wave detection information from the wireless LAN repeater 100, or when its own radar radio wave detection circuit 22a detects a radio wave (step S63), it stops communication on the channel in the 5GHzW56 band in use (step S64), and checks for connection on another channel in the 5GHzW56 band (step S65). Specifically, it searches for a channel where radar radio waves have not been detected for one minute or more and the radio waves of other SSID wireless LANs are weak. If connection on another channel in the 5GHzW56 band is possible (step S66), it connects to the wireless LAN repeater 100 on that channel (step S67). If not possible, to find the optimal communication environment between the wireless LAN router 200 and the wireless LAN repeater 100, the wireless LAN repeater 100 and the wireless LAN router 200 are restarted from step S1 and steps S42 to S42a respectively (step S68). However, in the restart of the wireless LAN repeater 100, "OK to connect in 5GHzW56 band?" in steps S3 and S9 is "No". Also, in the restart of the wireless LAN router 200, the SSID in the 5GHzW56 band is not output in steps S42, S42a and S42b.

[0080] In FIG. 12, after stopping communication on the channel in the 5GHzW56 band in use in step S64 due to radar detection or the like, the wireless LAN router 200 first connects to the wireless LAN repeater 100 at 6GHz (VLP) or 2.4GHz (step S71). Then, while maintaining the communication in step S71, the wireless LAN router 200 investigates the possibility of connection on another channel in the 5GHzW56 band (step S72). Specifically, it searches for another channel where radar radio waves have not been detected for one minute or more and the radio waves of other SSID wireless LANs are weak. If it is possible to connect on another channel in the 5GHz W56 band (step S73), the wireless LAN router 200 switches the connection with the wireless LAN repeater 100 to another channel in the 5GHz W56 band (step S74). If it is not possible, the connection with the wireless LAN repeater 100 at 6GHz or 2.4GHz is continued. Note that in step S74, although an example of switching to another channel in the W56 band is shown in FIG. 12, the present invention is not limited to this. In order to find an optimal communication environment between the wireless LAN router 200 and the wireless LAN repeater 100, the wireless LAN repeater 100 and the wireless LAN router 200 may be restarted from step S1 and steps S42 to S42a, respectively. In the method of FIG. 11, after stopping the communication in the 5GHz W56 band in use, it is necessary to confirm that there is no radar radio wave on another channel for at least 1 minute. Therefore, the communication stops for at least 1 minute. On the other hand, in the method of FIG. 12, although it is necessary to connect to the wireless LAN repeater 100 at 6GHz or 2.4GHz once, it is advantageous in that it is possible to avoid communication interruption for at least 1 minute.

[0081] (Advantages of the wireless frequency band switching method in the away-from-home mode) When the wireless LAN router 200 arranged in the main house 400 and the wireless LAN repeater 100 arranged in the away-from-home 500 are connected via the outdoor communication path 600, and the wireless LAN repeater 100 is connected to one or more first hosts 300 arranged in the same away-from-home 500 via the indoor communication path 700, the wireless LAN system 1000 of the present invention has the following advantages. 1) Since the 5GHz W52 band, W53 band, and 6GHz band LPI, which are prohibited from outdoor use, are not used for the connection between the wireless LAN router 200 and the wireless LAN repeater 100, there is no violation of the law. 2) Since the optimal communication environment is selected from the 6GHz band VLP and the 5GHz W56 band, which are permitted for outdoor communication, for the connection with the wireless LAN router 200, the communication capacity of the connection with the wireless LAN router 200 can be increased. 3) When radar radio waves are detected by the wireless LAN router 200 or the wireless LAN repeater 100 in the 5 GHz W56 band, one of the following two methods is adopted. In the first method, first, a connection on another channel in the 5 GHz W56 band is attempted. If the connection is impossible, the wireless LAN router 200 and the wireless LAN repeater 100 are restarted. For this reason, it is possible to ensure compliance with the law by improving the radar detection accuracy at the time of radar detection and to suppress the processing amount of the wireless LAN repeater 100. In the second method, first, a connection is made with the wireless LAN repeater 100 at 6 GHz or 2.4 GHz, and then a connection on another channel in the 5 GHz W56 band is attempted. For this reason, it is possible to ensure compliance with the law by improving the radar detection accuracy at the time of radar detection and to avoid communication interruption for at least one minute required for radar detection. 4) By periodically attempting to return to the 6 GHz band VLP or the 5 GHz W56 band with a larger communication capacity, the cumulative communication capacity can be increased.

[0082] Note that the arrangements of the wireless LAN router 200 and the wireless LAN repeater 100 may be changed from the initial arrangement positions. Therefore, it is desirable that the wireless LAN router 200 and the wireless LAN repeater 100 be provided with not only the away-home mode but also a normal mode that uses all frequency bands of the 2.4 GHz band, 5 GHz band, and 6 GHz band for the connection between the wireless LAN router 200 and the wireless LAN repeater 100 and the connection with the hosts 300, 300a. In addition, it is desirable to enable the switching between the two modes using a switch or the like so that it is clear which mode the wireless LAN router 200 and the wireless LAN repeater 100 are operating in. In this case, from the viewpoints of preventing misoperations and ensuring clarity, it is more preferable that the mode changeover switch be a slide switch provided on the side surface of the housing of the wireless LAN router 200 and the wireless LAN repeater 100. Further, an LED provided on the housing may indicate which mode the communication is in, or which frequency band is being used for communication between the wireless LAN router 200 and the wireless LAN repeater 100. Furthermore, by displaying the communication state (such as radio wave intensity) between the wireless LAN router 200 and the wireless LAN repeater 100 using an LED or the like, it may be possible to easily find an optimal installation location for high-capacity high-speed communication.

[0083] Also, in the wireless LAN system 1000 configured as shown in FIG. 1, the wireless LAN router 200 and the wireless LAN repeater 100 each have a plurality of SSIDs, and the SSID for the connection between the wireless LAN router 200 and the second host 300a is the same as the SSID for the connection between the wireless LAN repeater 100 and the first host 300, and the SSID for the connection between the wireless LAN router 200 and the wireless LAN repeater 100 may be configured to be different from the same SSID.

[0084] In this case, since the same SSID is set for the first host 300 and the second host 300a, even when the second host 300a (for example, a smartphone) used in the main house 400 moves to the detached house 500, the wireless LAN connection can be continued as it is. Also, since the SSIDs for the connection between the wireless LAN router 200 and the wireless LAN repeater 100 and the connection between the wireless LAN router 200 or the wireless LAN repeater 100 and the hosts 300, 300a are different, for example, the connection between the wireless LAN router 200 and the wireless LAN repeater 100 can be made to correspond to VLP, and the connection between the wireless LAN router 200 or the wireless LAN repeater 100 and the hosts 300, 300a can be made to correspond to LPI.

[0085] [Wireless LAN System 1000a of the Third Embodiment] FIG. 13 is a schematic configuration diagram of a wireless LAN system 1000a of the third embodiment, which is composed of a wireless LAN router 200 and a second wireless LAN repeater 120 arranged in the main house 400, and a first wireless LAN repeater 100 and a first host 300 of the first embodiment arranged in the detached house 500. In the configuration of FIG. 13, since the indoor communication path 720 is between the wireless LAN router 200 and the second wireless LAN repeater 120, and the outdoor communication path 600 is between the second wireless LAN repeater 120 and the wireless LAN repeater 100, it is desirable to set the second wireless LAN repeater 120 to the outdoor communication path specification for connection to the first wireless LAN repeater 100 and set the wireless LAN repeater 100 to the detached house mode. In this case, the connection between the wireless LAN router 200 and the first host 300 can be made without violating the law and with the maximum possible communication capacity.

[0086] [Wireless LAN System 1000b of the Fourth Embodiment] FIG. 14 is a schematic configuration diagram of a wireless LAN system 1000b of the fourth embodiment, which is composed of a wireless LAN router 200 of the second embodiment arranged in the main house 400, and a first wireless LAN repeater 100, a third wireless LAN repeater 130, and a first host 300 of the first embodiment arranged in the detached house 500. In the configuration of FIG. 14, since the outdoor communication path 600 is between the wireless LAN router 200 and the first wireless LAN repeater 100, and the indoor communication path 730 is between the first wireless LAN repeater 100 and the third wireless LAN repeater 130, it is desirable to set the wireless LAN router 200 and the first wireless LAN repeater 100 to the detached house mode and set the third wireless LAN repeater 130 to the normal mode. In this case, the connection between the wireless LAN router 200 and the first host 300 can be made without violating any laws and with the maximum possible communication capacity.

[0087] [Wireless LAN system 1000c of the fifth embodiment] FIG. 15 is a schematic configuration diagram of a wireless LAN system 1000c of the fifth embodiment, which is composed of a wireless LAN router 200 of the second embodiment arranged in the main house 400, a fourth wireless LAN repeater 140 of the first embodiment arranged in the first detached house 510, a first wireless LAN repeater 100 of the first embodiment arranged in the second detached house 520, and a first host 300. In the configuration of FIG. 15, since the outdoor communication path 640 is between the wireless LAN router 200 and the fourth wireless LAN repeater 140, and the outdoor communication path 600 is also between the fourth wireless LAN repeater 140 and the first wireless LAN repeater 100, it is necessary to set the wireless LAN router 200, the fourth wireless LAN repeater 140, and the first wireless LAN repeater 100 to the detached house mode, and the fourth wireless LAN repeater 140 needs to be set to the outdoor communication path specification for the connection with the first wireless LAN repeater 100. In this case, the connection between the wireless LAN router 200 and the host 300 can be made without violating any laws and with the maximum possible communication capacity.

[0088] In the present invention, the wireless LAN router 200 corresponds to the "wireless LAN router", the wireless LAN repeater 100 corresponds to the "wireless LAN repeater", the hosts 300 and 300a correspond to the "host", the outdoor communication paths 600 and 640 correspond to the "outdoor communication path", the indoor communication paths 700, 720, and 730 correspond to the "indoor communication path", the main house 400 corresponds to the "main house", the detached house 500 corresponds to the "detached house", the first detached house 510 corresponds to the "first detached house", the second detached house 520 corresponds to the "second detached house", the second wireless LAN repeater 120 corresponds to the "second wireless LAN repeater", the third wireless LAN repeater 130 corresponds to the "third wireless LAN repeater", the fourth wireless LAN repeater 140 corresponds to the "fourth wireless LAN repeater", the 2.4 GHz band wireless communication circuits 10 and 10a correspond to the "wireless communication circuit capable of communicating in the 2.4 GHz band", the 5 GHz band wireless communication circuits 20 and 20a correspond to the "wireless communication circuit capable of communicating in the 5 GHz band", and the 6 GHz band wireless communication circuits 30 and 30a correspond to the "wireless communication circuit capable of communicating in the 6 GHz band", the radar radio wave detection circuits 22 and 22a correspond to the "radar radio wave detection circuit", the network circuit 60 corresponds to the "network circuit", and the wireless LAN systems 1000, 1000a, 1000b, and 1000c correspond to the "wireless LAN system".

[0089] A preferred embodiment of the present invention is as described above, but the present invention is not limited thereto. It will be understood that various embodiments may be made without departing from the spirit and scope of the present invention. Further, in the present embodiment, the actions and effects according to the configuration of the present invention are described, but these actions and effects are merely examples and do not limit the present invention.

Description of Reference Numerals

[0090] 10, 10a 2.4 GHz band wireless communication circuit 20, 20a 5 GHz band wireless communication circuit 22, 22a Radar radio wave detection circuit 30, 30a 6 GHz band wireless communication circuit 60 Network circuit 100 Repeater for Wireless LAN, First Repeater for Wireless LAN 120 Second Repeater for Wireless LAN 130 Third Repeater for Wireless LAN 140 Fourth Repeater for Wireless LAN 200 Router for Wireless LAN 300, 300a Host 400 Main House 500 Detached House 510 First Detached House 520 Second Detached House 600, 640 Outdoor Communication Path 700, 720, 730 Indoor Communication Path 1000, 1000a, 1000b, 1000c Wireless LAN System

Claims

1. A wireless LAN router that is connected via a wireless LAN repeater and an outdoor communication path and has a remote mode used when connected to a second host via an indoor communication path, comprising one wireless communication circuit capable of communicating in the 2.4 GHz band, a wireless communication circuit capable of communicating in the 5 GHz band, one wireless communication circuit capable of communicating in the 6 GHz band, and a network circuit connectable to wired WAN and LAN, when starting up the remote mode, connect to the wireless LAN repeater in a frequency band selected according to the requirements of the wireless LAN repeater from among the connectable frequency bands of 6 GHz band VLP (Very Low Power), 5 GHz W56 band, and 2.4 GHz band, and connect to the second host in the 2.4 GHz band, 5 GHz band, and / or 6 GHz band according to the requirements of the second host. A wireless LAN router.

2. The wireless LAN router according to claim 1, comprising a plurality of SSIDs, wherein the SSID for connection to the wireless LAN repeater corresponds to 6 GHz band VLP, and the SSID for connection to the second host corresponds to 6 GHz band LPI.

3. The wireless LAN router according to claim 1, wherein the second host and the wireless LAN repeater are identified by receiving identification information from the wireless LAN repeater.

4. A wireless LAN router that is connected via a wireless LAN repeater and an outdoor communication path and has a remote mode used when connected to a second host via an indoor communication path, comprising a wireless communication circuit capable of communicating in the 2.4 GHz band, a wireless communication circuit capable of communicating in the 5 GHz band, a wireless communication circuit capable of communicating in the 6 GHz band, and a network circuit connectable to wired WAN and LAN, the wireless communication circuit capable of communicating in the 6 GHz band is configured to be capable of communicating only in one of 6 GHz band VLP and 6 GHz band LPI with all connection terminals of the wireless LAN repeater and the second host, when starting up the remote mode, connect to the wireless LAN repeater in a frequency band selected according to the requirements of the wireless LAN repeater from among the connectable frequency bands of 6 GHz band VLP (Very Low Power), 5 GHz W56 band, and 2.4 GHz band, and In the case where the wireless LAN repeater is required to be connectable by 6 GHz band VLP, and the wireless LAN router is not connected to the second host by 6 GHz band LPI, the communication in the 6 GHz band is switched from LPI to VLP, For the second host, a wireless LAN router that connects in the 2.4 GHz band, 5 GHz band, and / or 6 GHz band in accordance with the request of the second host.

5. The wireless LAN router according to any one of claims 1 to 4 arranged in the main house and the second host, Composed of a wireless LAN repeater and a first host arranged in a detached house, The wireless LAN router is set to the detached house mode, connected to the wireless LAN repeater via an outdoor communication path, the wireless LAN router is connected to the second host via an indoor communication path, and the wireless LAN repeater is connected to the first host via an indoor communication path. Wireless LAN system.

6. The wireless LAN router and the wireless LAN repeater each have a plurality of SSIDs, The SSID of the connection between the wireless LAN router and the second host and the SSID of the connection between the wireless LAN repeater and the first host are the same SSID, The SSID of the connection between the wireless LAN router and the wireless LAN repeater is different from the same SSID. The wireless LAN system according to claim 5.

7. The 5 GHz band wireless communication circuit of the wireless LAN repeater has a radar radio wave detection circuit, When the wireless LAN repeater detects the radar radio wave in the 5 GHz W56 band, the wireless LAN repeater transmits the radar radio wave detection information to the wireless LAN router, and the wireless LAN router determines that the radar radio wave has been detected. The wireless LAN system according to claim 5.

8. The wireless LAN router according to any one of claims 1 to 4 arranged in the main house, Composed of a first wireless LAN repeater, a third wireless LAN repeater, and a first host arranged in a detached house, The wireless LAN router is set to the detached house mode and connected to the first wireless LAN repeater via an outdoor communication path, The third wireless LAN repeater is a wireless LAN system that is connected to the first wireless LAN repeater via an indoor communication path and is also connected to the first host via an indoor communication path.

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