JP2019036935A - Wireless lan communication apparatus - Google Patents

Abstract

To solve such a problem that a technology ensuring high radio wave output in radio communication by using a frequency bandwidth of 5470-5725 MHz is desired in wireless LAN communication apparatus.SOLUTION: A wireless LAN communication apparatus includes a first radio communication unit, a second radio communication unit, a third radio communication unit, a first antenna connected with the first radio communication unit, and a second antenna connected with the second and third radio communication units. Radio wave output of radio communication executed by the first radio communication unit defined by equivalent isotropic radiation power in the bandwidth of 1 MHz is higher than radio wave output of radio communication executed by the second radio communication unit defined by equivalent isotropic radiation power in the bandwidth of 1 MHz.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wireless LAN communication apparatus.

  Conventionally, a wireless communication device having a plurality of antennas used for wireless communication in the same frequency band is known (for example, Patent Document 1). A wireless LAN communication device that performs wireless communication using a 5 GHz band Low (5150-5250 MHz / 5250-5350 MHz) and a 2.4 GHz band (2401-2483 MHz) is known (for example, Patent Document 2).

JP-A-10-107727 JP 2004-31628 A

  Here, in the wireless LAN communication device, in addition to the 5 GHz band Low (5150-5250 MHz / 5250-5350 MHz) and the 2.4 GHz band (2401-2483 MHz), the 5 GHz band High (5470-5725 MHz) is used as the frequency band. There is. In this case, the wireless LAN communication apparatus may have a shared antenna used for the 5 GHz band High and the 5 GHz band Low and another antenna used for the 2.4 GHz band. However, in this case, since the legal radio wave output limit value is lower in the 5 GHz band Low than in the 5 GHz band High, the radio wave output in the 5 GHz band High is lower than the radio wave output limit value in the 5 GHz band High. . Therefore, in the wireless LAN communication apparatus that can use three different frequency bands, there may arise a problem that the radio wave output of the 5 GHz band High cannot be effectively used. For example, when the radio wave output of the 5 GHz band High is low, the distance in which wireless communication is possible becomes short. Therefore, there is a demand for a technology that can increase the radio wave output in the 5 GHz band High in a wireless LAN communication apparatus that can use three frequency bands. In addition, it is preferable to perform wireless communication using a high frequency band of 5 GHz band (frequency band of 5470-5725 MHz), for example, an apparatus that provides high-pixel video content such as 4K TV, 8K TV, etc. The number of wireless repeaters that enable wireless communication throughout the house is increasing. When connecting to such a connection destination, it is difficult to secure a sufficient communicable distance in a wireless LAN communication apparatus having a shared antenna used for the 5 GHz band High and the 5 GHz band Low, and a sufficient speed It is also difficult to ensure. Further, when connecting to such a connection destination, even a wireless LAN communication apparatus having a plurality of antennas used for wireless communication in the same frequency band (5 GHz band Low or 2.4 GHz band) has a sufficient communication speed. It is difficult to ensure.

  This indication is made in order to solve at least one part of the above-mentioned subject, and can be realized as the following forms.

(1) According to one form of the present disclosure, a wireless LAN communication device is provided. This wireless LAN communication apparatus uses one of a first wireless communication unit that performs wireless communication using a frequency band of 5470-5725 MHz, a frequency band of 5150-5250 MHz, and a frequency band of 5250-5350 MHz. A second wireless communication unit that performs wireless communication, a third wireless communication unit that performs wireless communication using a frequency band of 2401-2483 MHz, and a first wireless communication unit that is connected to the first wireless communication unit. And a second antenna unit connected to the second radio communication unit and the third radio communication unit. The radio wave output of the first antenna unit of the wireless communication executed by the first wireless communication unit defined by the equivalent isotropic radiant power in the 1 MHz bandwidth is defined by the equivalent isotropic radiant power in the 1 MHz bandwidth. The second radio communication unit to be executed is higher than the radio wave output of the radio communication executed by the second antenna unit when the radio communication is executed. According to the wireless LAN communication device of this aspect, the first antenna unit connected to the first wireless communication unit, the second wireless communication unit, and the second wireless communication unit connected to the third wireless communication unit An antenna unit. Therefore, the first wireless communication unit and the first antenna unit that perform wireless communication using the frequency band of 5470-5725 MHz are designed by limiting the radio wave output of the frequency band of 5150-5250 MHz and the frequency band of 5250-5350 MHz. Not affected. Therefore, according to this wireless LAN communication apparatus, the radio wave output of the first antenna unit can be made higher than the radio wave output of the second antenna unit when the second radio communication unit performs radio communication.

(2) In the wireless LAN communication device of the above aspect, an antenna gain of the first antenna unit may be higher than an antenna gain of the second antenna unit. According to the wireless LAN communication device of this aspect, the antenna gain of the first antenna unit is higher than the antenna gain of the second antenna unit, so that the antenna gain of the first antenna unit is the antenna gain of the second antenna unit. Compared to the case where the frequency is not higher, the radio wave output of the wireless communication executed by the first wireless communication unit connected to the first antenna unit can be easily increased.

(3) In the wireless LAN communication device of the above aspect, the directivity of the first antenna unit may be higher than the directivity of the second antenna unit. According to the wireless LAN communication device of this aspect, the antenna gain of the first antenna unit can be increased by making the directivity of the first antenna unit higher than the directivity of the second antenna unit.

(4) The wireless LAN communication apparatus according to the above aspect further includes a housing that accommodates the first wireless communication unit, the second wireless communication unit, and the third wireless communication unit, and the first antenna. And a direction changing unit that changes a maximum gain direction, which is a direction in which an antenna gain of the antenna beam of the first antenna unit is maximized. May be disposed on the outer wall surface of the housing. According to the wireless LAN communication device of this aspect, the maximum gain direction can be easily changed by the direction changing unit.

(5) The wireless LAN communication apparatus of the above aspect may further include an identification unit that is visible from the outside and that identifies the first antenna unit. According to the wireless LAN communication device of this aspect, the user of the wireless LAN communication device can visually identify the first antenna unit.

(6) In the wireless LAN communication device of the above aspect, the direction changing unit may be capable of changing an angle formed by a horizontal direction and the maximum gain direction. According to this form of the wireless LAN communication device, the direction changing unit can change the maximum gain direction of the first antenna unit in the vertical direction.

(7) In the wireless LAN communication device of the above aspect, the direction changing unit may set the maximum gain direction to at least one of a range from a horizontal direction to a vertically upward direction and a range from a horizontal direction to a vertically downward direction. It may be changeable within a range including one. According to the wireless LAN communication device of this aspect, the maximum gain direction can be directed to the device installed in the horizontal direction of the wireless LAN communication device. Further, the maximum gain direction can be directed to a device installed at least one directly above or directly below the wireless LAN communication device.

(8) In the wireless LAN communication device of the above aspect, the direction changing unit may further change the maximum gain direction in the horizontal direction. According to the wireless LAN communication device of this aspect, the maximum gain direction in the horizontal direction can be changed without changing the arrangement position of the wireless LAN communication device itself.

(9) In the wireless LAN communication device of the above aspect, the outer wall surface may be a side surface of the housing. According to the wireless LAN communication device of this aspect, the maximum gain direction is easily directed to both the upper side and the lower side as compared with the case where the first antenna unit is provided on the outer wall surface other than the side surface, that is, the upper surface or the lower surface. be able to.

(10) In the wireless LAN communication device of the above aspect, the second antenna unit may be accommodated in the housing. According to the wireless LAN communication device of this aspect, the first antenna unit can be easily identified as compared with the case where the second antenna unit is arranged outside the housing.

(11) The wireless LAN communication device of the above aspect is a direction display unit that is visible from the outside, and indicates a maximum gain direction that is a direction in which an antenna gain of the antenna beam of the first antenna unit is maximized. A direction display unit may be provided. According to the wireless LAN communication device of this aspect, the user can grasp the maximum gain direction of the first antenna unit from the outside.

(12) The wireless LAN communication apparatus of the above aspect further includes a first power amplifier that amplifies power input from the first wireless communication unit to the first antenna unit, and the second wireless communication unit. To a second power amplifier that amplifies the power input to the second antenna unit. The power amplified by the first power amplifier may be higher than the power amplified by the second power amplifier. According to the wireless LAN communication device of this aspect, the radio wave output of the first antenna unit is increased by making the power amplified by the first power amplifier higher than the power amplified by the second power amplifier. it can.

(13) In the wireless LAN communication device of the above aspect, the first wireless communication unit executes the wireless communication using channel bonding that collectively uses a plurality of channels belonging to the frequency band of 5470-5725 MHz. Also good. According to the wireless LAN communication device of this aspect, the first wireless communication unit performs wireless communication using channel bonding, and therefore can perform wireless communication using a wider bandwidth than when channel bonding is not used. .

(14) In the wireless LAN communication device of the above aspect, the first wireless communication unit uses the channel bonding, so that the bandwidth used for the wireless communication executed by the third wireless communication unit is more than The wireless communication may be performed using a wide bandwidth. According to the wireless LAN communication device of this aspect, the first wireless communication unit executes wireless communication using a wider bandwidth than the bandwidth used for the wireless communication executed by the third wireless communication unit. Compared with the wireless communication performed by the third wireless communication unit, the amount of communication that can be performed at a time can be increased.

(15) In the wireless LAN communication device according to the above aspect, the first antenna unit may include a plurality of antennas, and the first wireless communication unit may perform the MIMO wireless communication. According to the wireless LAN communication device of this aspect, the first wireless communication unit executes the wireless communication of the MIMO method, so that the communication speed can be increased as compared with the case where the MIMO method is not used.

  The present disclosure can be realized in various forms other than a wireless LAN communication device. For example, a wireless LAN communication device control method, an antenna device used for wireless LAN communication, and a network system including a wireless LAN communication device Or the like.

1 is a schematic configuration diagram of a network system including a wireless LAN communication device as a first embodiment. 1 is a block diagram showing an internal configuration of a wireless LAN communication device according to a first embodiment. The figure which shows the directivity of a 1st antenna part. The figure which shows the directivity of a 2nd antenna part. The graph which shows the output value of the wireless communication which the wireless LAN communication apparatus which concerns on 1st Embodiment performs. The block diagram which shows the internal structure of the wireless LAN communication apparatus which concerns on a comparative example. The graph which shows the output value of the wireless communication which the wireless LAN communication apparatus which concerns on a comparative example performs. The schematic diagram of the house which conducted the experiment which compares the communication speed of the wireless LAN communication apparatus which concerns on 1st Embodiment, and the communication speed of a comparison apparatus. The table | surface which shows the result of a comparative experiment. The graph which shows the output value of the wireless communication which the wireless LAN communication apparatus which concerns on 2nd Embodiment performs. The block diagram which shows the structure of the wireless LAN communication apparatus which concerns on 3rd Embodiment. The schematic diagram which shows the external appearance of the wireless LAN communication apparatus which concerns on 3rd Embodiment. The 1st side view of the wireless LAN communication apparatus which concerns on 3rd Embodiment. The 2nd side view of the wireless LAN communication apparatus which concerns on 3rd Embodiment. The 1st top view of the wireless LAN communication apparatus which concerns on 3rd Embodiment. The 2nd top view of the wireless LAN communication apparatus concerning 3rd Embodiment. The 1st schematic diagram which shows the external appearance of the wireless LAN communication apparatus which concerns on 4th Embodiment. The 2nd schematic diagram which shows the external appearance of the wireless LAN communication apparatus which concerns on 4th Embodiment.

A. First Embodiment FIG. 1 is a schematic configuration diagram of a network system 200 including a wireless LAN communication device 100 as a first embodiment. The network system 200 includes a wireless LAN communication device 100 and three client devices CL1, CL2, and CL3.

  The wireless LAN communication device 100 is a wireless LAN access point, and is connected to the Internet INT via a wired cable. The wireless LAN communication device 100 also functions as a wired LAN access point.

  The client devices CL1 to CL3 are devices connected to the Internet INT via the wireless LAN communication device 100. The first client device CL1 and the second client device CL2 are wirelessly connected to the wireless LAN communication device 100. The third client device CL3 is wired to the wireless LAN communication device 100. The first client device CL1 is a device whose use position is fixed in normal use, for example, a wireless LAN relay device that relays television or wireless communication. In the present embodiment, the first client device CL1 is a television. The second client device CL2 is a device whose use position is not fixed in normal use, for example, a smartphone or a tablet computer. In the present embodiment, the second client device CL2 is a tablet computer. The third client device CL3 is, for example, a personal computer (PC). The network system 200 may include a client device other than the client devices CL1 to CL3.

  FIG. 2 is a block diagram showing an internal configuration of the wireless LAN communication device 100. The wireless LAN communication device 100 includes a first wireless communication unit 11, a second wireless communication unit 12, a third wireless communication unit 13, a first antenna unit 20, a second antenna unit 30, The wired communication part 40, the baseband processor 50, the memory | storage part 60, and the control part 90 are provided. In the present embodiment, the wireless LAN communication device 100 uses three frequency bands: a frequency band of 5470-5725 MHz, a frequency band of 5150-5250 MHz, a frequency band of 5250-5350 MHz, and a frequency band of 2401-2483 MHz. A tri-band wireless LAN communication device.

  The tri-band wireless LAN communication device includes wireless communication units 11 to 13 that perform wireless communication using the above three frequency bands, and mainly perform wireless communication that uses the above three frequency bands. It is. Therefore, in addition to the three wireless communication units 11 to 13, the tri-band wireless LAN communication device conforms to a communication unit that performs wireless communication using a different frequency band and a standard different from IEEE 802.11. A wireless LAN communication device including a communication unit that executes wireless communication, a wired communication unit 40, and the like is also included. The wireless communication using another frequency band uses, for example, a sub-giga band that is a frequency band less than 1 GHz (916.5-927.5 MHz) or a 60 GHz band that is a frequency band centered on a frequency near 60 GHz. Wireless communication. The wireless communication based on a standard different from IEEE 802.11 is wireless communication using, for example, Bluetooth (registered trademark) or Zigbee (registered trademark).

  Hereinafter, the frequency band of 5470-5725 MHz is described as 5 GHz band High. Further, the frequency band of 5150-5250 MHz and the frequency band of 5250-5350 MHz are described as 5 GHz band Low. The frequency band of 2401-2483 MHz is described as a 2.4 GHz band. A plurality of channels belong to the 5 GHz band High, the 5 GHz band Low, and the 2.4 GHz band, respectively. Specifically, the channels belonging to the 5 GHz band High are 11 channels of 100 ch, 104 ch, 108 ch, 112 ch, 116 ch, 120 ch, 124 ch, 128 ch, 132 ch, 136 ch, and 140 ch. The channels belonging to the 5 GHz band Low are a total of 8 channels including 4 channels of 36 ch, 40 ch, 44 ch, and 48 ch and 4 channels of 52 ch, 56 ch, 60 ch, and 64 ch. The channels belonging to the 2.4 GHz band are 13 channels of 1ch to 13ch.

  The first wireless communication unit 11 includes first RF circuits rf11 and rf12, and first power amplifiers a11 and a12. The first wireless communication unit 11 is electrically connected to the baseband processor 50 and the first antenna unit 20. The first wireless communication unit 11 performs wireless communication conforming to IEEE802.11a / n / ac using 5 GHz band High. The first RF circuits rf11 and rf12 convert the baseband signal transmitted from the baseband processor 50 into a high frequency which is an electrical signal of 5 GHz band High, or based on the high frequency received by the first antenna unit 20. Convert to band signal. The first power amplifiers a <b> 11 and a <b> 12 amplify the power input from the first wireless communication unit 11 to the first antenna unit 20. Specifically, the first power amplifier a11 amplifies high-frequency power output from the first RF circuit rf11 to the first antenna unit 20, and the first power amplifier a12 includes the first RF circuit rf12. The high frequency power output from the first antenna unit 20 to the first antenna unit 20 is amplified. Hereinafter, when a common function and configuration of the first RF circuit rf11 and the first RF circuit rf12 are described, they are referred to as a first RF circuit rf1. Similarly, when a common function and configuration are described for the first power amplifiers a11 and a12, they are referred to as a first power amplifier a1. Details of the wireless communication performed by the first wireless communication unit 11 will be described later.

  The first antenna unit 20 includes a first dedicated antenna 211, a second dedicated antenna 212, and connector terminals c11 and c12. The connector terminal c11 is a terminal unit that connects the first dedicated antenna 211 and the first wireless communication unit 11. The connector terminal c <b> 12 is a terminal unit that connects the second dedicated antenna 212 and the first wireless communication unit 11. Hereinafter, the common function and configuration of the first dedicated antenna 211 and the second dedicated antenna 212 will be described as the dedicated antenna 21. Similarly, when a common function and configuration of the connector terminals c11 and c12 are described, it is referred to as a connector terminal c1.

  The dedicated antenna 21 has higher directivity and antenna gain than the shared antenna 31 included in the second antenna unit 30 described later. The directivity is an antenna characteristic defined by the half width of the antenna beam, and in the present embodiment, is directivity in the horizontal direction. The directivity of the dedicated antenna 21 is preferably a value in the range of 100 ° to 150 °. The antenna gain is evaluated by an absolute gain based on an isotropic antenna that is a virtual isotropic antenna. The antenna gain of the first antenna unit 20 is preferably 7 dBi or more. When an antenna with a high antenna gain is used, the radio wave output is higher than when an antenna gain with a low antenna gain is used. The antenna gain is increased, for example, by increasing the antenna size and directivity. The antenna gain of the dedicated antenna 21 is also described as the antenna gain of the first antenna unit 20. Details of the dedicated antenna 21 will be described later.

  The second wireless communication unit 12 includes second RF circuits rf21 and rf22 and second power amplifiers a21 and a22. The second wireless communication unit 12 is electrically connected to the baseband processor 50 and the second antenna unit 30. The second wireless communication unit 12 executes wireless communication conforming to IEEE 802.11a / n / ac using the 5 GHz band Low. The second RF circuits rf21 and rf22 convert the baseband signal transmitted from the baseband processor 50 into a high frequency that is an electrical signal in the 5 GHz band Low, or based on the high frequency received by the second antenna unit 30. Convert to band signal. The second power amplifiers a <b> 21 and a <b> 22 amplify power input from the second wireless communication unit 12 to the second antenna unit 30. Specifically, the second power amplifier a21 amplifies high-frequency power output from the second RF circuit rf21 to the second antenna unit 30, and the second power amplifier a22 includes the second RF circuit rf22. The high frequency power output from the first to the second antenna unit 30 is amplified. Hereinafter, when a common function and configuration of the second RF circuit rf21 and the second RF circuit rf22 are described, they are referred to as a second RF circuit rf2. Similarly, when the common function and configuration of the second power amplifiers a21 and a22 are described, they are referred to as a second power amplifier a2. Details of the wireless communication performed by the second wireless communication unit 12 will be described later.

  The third wireless communication unit 13 includes third RF circuits rf31 and rf32 and third power amplifiers a31 and a32. The third wireless communication unit 13 is electrically connected to the baseband processor 50 and the second antenna unit 30. The third wireless communication unit 13 performs wireless communication complying with IEEE802.11b / g / n using the 2.4 GHz band. The third RF circuits rf31 and rf32 convert the baseband signal transmitted from the baseband processor 50 into a high frequency that is an electrical signal in the 2.4 GHz band, or the high frequency received by the second antenna unit 30. Convert to baseband signal. The third power amplifiers a <b> 31 and a <b> 32 amplify power input from the third wireless communication unit 13 to the second antenna unit 30. Specifically, the third power amplifier a31 amplifies high-frequency power output from the third RF circuit rf31 to the second antenna unit 30, and the third power amplifier a32 includes the third RF circuit rf32. The high frequency power output from the first to the second antenna unit 30 is amplified. In the following, when the common functions and configurations of the third RF circuit rf31 and the third RF circuit rf32 are described, the third RF circuit rf31 and the third RF circuit rf32 are the third RF circuit rf3. It describes. Similarly, the common function and configuration of the third power amplifiers a31 and a32 will be described as the third power amplifier a3. Details of the wireless communication performed by the third wireless communication unit 13 will be described later.

  The second antenna unit 30 includes a first shared antenna 311, a second shared antenna 312, and connector terminals c21 and c22. The connector terminal c <b> 21 is a terminal unit that connects the first shared antenna 311, the second wireless communication unit 12, and the third wireless communication unit 13. The connector terminal c <b> 22 is a terminal unit that connects the second shared antenna 312, the second wireless communication unit 12, and the third wireless communication unit 13. The duplexers dl1 and dl2 are disposed between the connector terminals c21 and c22 and the second wireless communication unit 12 and the third wireless communication unit 13, respectively. The demultiplexers dl1 and dl2 are devices that separate a signal for each frequency band and allow an antenna to be shared in a plurality of different frequency bands. Hereinafter, the common function and configuration of the first shared antenna 311 and the shared antenna 312 will be described as the shared antenna 31. Similarly, when a common function and configuration of the connector terminals c21 and c22 are described, they are described as a connector terminal c2. Similarly, when a common function and configuration of the duplexers dl1 and dl2 are described, they are described as the duplexer dl.

  The shared antenna 31 is omnidirectional and has a lower antenna gain than the dedicated antenna 21. The non-directional property indicates an antenna characteristic in which the half width of the antenna beam, which is an evaluation standard for directivity, cannot be calculated. The antenna characteristics for which the half width cannot be calculated correspond to, for example, the case where the maximum value of the antenna gain in the antenna beam is less than 3 dBi, or the case where the difference between the maximum value and the minimum value of the antenna gain in the antenna beam is less than 3 dBi. . The shared antenna 31 is an antenna that can be shared for wireless communication using different frequency bands. For example, the shared antenna 31 is an antenna having two antenna substrates for one antenna terminal, that is, a so-called dual band antenna. The antenna gain of the shared antenna 31 is also described as the antenna gain of the second antenna unit 30. Details of the shared antenna 31 will be described later.

  The baseband processor 50 is a semiconductor integrated circuit, and generates a baseband signal from data transmitted via wireless communication or generates data from a baseband signal received via wireless communication. Data generated by the baseband processor 50 is sent to the wireless communication units 11 to 13.

  The storage unit 60 includes a non-volatile memory and a volatile memory (not shown). The non-volatile memory stores a control program necessary for executing the function of the wireless LAN communication device 100. The volatile memory temporarily stores information acquired by communication of the wireless LAN communication device 100.

  The wired communication unit 40 performs wired communication with the client device CL3 (FIG. 1) connected by wire. In the present embodiment, the wireless LAN communication device 100 includes the wired communication unit 40, but the wireless LAN communication device 100 may not include the wired communication unit 40.

  The control unit 90 has a CPU (not shown). The control unit 90 is electrically connected to the storage unit 60. The control unit 90 controls the first wireless communication unit 11, the second wireless communication unit 12, the third wireless communication unit 13, and the baseband processor 50. The control unit 90 controls the wireless LAN communication device 100 by executing a control program stored in the storage unit 60. For example, the control unit 90 determines which wireless communication unit of the wireless communication units 11 to 13 is connected to the client device CL2 (FIG. 1) whose use position is not fixed in normal use. Specifically, the control unit 90 switches the connection destination of the client device CL2 by band steering. Band steering is a process of determining, in real time, a wireless communication unit capable of optimal communication in relation to the client device CL2 among the wireless communication units 11 to 13 based on the communication speed, and switching the connection destination. In the present embodiment, the control unit 90 switches the connection destination of the client device CL2 based on the communication speed. For example, the control unit 90 determines the radio wave intensity, the link speed, the number of client devices to be used, and the radio wave interference status. You may switch based on. Further, the user of the client device CL2 may switch the connection destination of the client device CL2.

  The first wireless communication unit 11 performs MIMO (Multiple Input Multiple Output) wireless communication. The first wireless communication unit 11 performs wireless communication using channel bonding.

  MIMO wireless communication is a transmission method in which signals are spatially multiplexed using a plurality of transmission / reception antennas. MIMO wireless communication can increase the channel capacity compared to SISO (Single Input Single Output) wireless communication using only one antenna. In the present embodiment, the MIMO wireless communication performed by the first wireless communication unit 11 is a 2 × 2 MIMO method that uses two antennas for transmission and reception, respectively. When performing MIMO wireless communication, the correlation between the plurality of dedicated antennas 211 and 212 provided in the first antenna unit 20 needs to be small. For example, the correlation between the antennas decreases as the distance between the antennas increases. In the present embodiment, the 2 × 2 MIMO scheme is adopted. However, when the first antenna unit 20 has three or more antennas, the 3 × 3 MIMO scheme or the 4 × You may employ | adopt 4MIMO system. If the connected client device does not support the MIMO system, SISO wireless communication may be performed. In the present embodiment, the first wireless communication unit 11 employs a configuration capable of performing MIMO wireless communication, but may employ a configuration capable of performing only SISO wireless communication. In this case, the first antenna unit 20 may include one antenna.

  The channel bonding used by the first wireless communication unit 11 is a technique for expanding a bandwidth used for wireless communication by collecting a plurality of channels among channels belonging to the 5 GHz band High. The bandwidth used by the first wireless communication unit 11 for wireless communication is preferably wider than the bandwidth used by the third wireless communication unit 13 for wireless communication. Specifically, the first wireless communication unit 11 can perform wireless communication using a bandwidth of 80 MHz by collecting four channels with a bandwidth of 20 MHz. Wireless communication using a wide bandwidth increases the communication capacity that can be communicated at a time compared to wireless communication using a narrow bandwidth. When the communication capacity that can be communicated at a time is large, compared to the case where the communication capacity is small, there is a requirement for continuous large-capacity communication, for example, streaming playback of high-quality video by 4K TV, and many wireless slave units. Communication delay in wireless communication with the connected wireless relay is suppressed. In the present embodiment, the channel bonding performed by the first wireless communication unit 11 widens the bandwidth by combining four channels, but may be a multiple of two. The channel bonding performed by the first wireless communication unit 11 may, for example, combine eight or more even channels or two channels. In the present embodiment, when an inappropriate channel is included in the channels used for channel bonding, the channel bonding may be performed so that the bandwidth becomes narrower than the set bandwidth. An inappropriate channel is a channel in which communication at a sufficient communication speed is difficult due to, for example, the influence of interference or the number of connected communication devices. For example, even when the first wireless communication unit 11 is configured to combine eight channels and perform wireless communication using a 160 MHz bandwidth, it is appropriate to perform channel bonding that combines four channels. If so, the latter may be executed.

  Similar to the first wireless communication unit 11, the second wireless communication unit 12 is a MIMO wireless communication using channel bonding. However, the 5 GHz band Low used by the second wireless communication unit 12 has fewer channels than the 5 GHz band High used by the first wireless communication unit 11. For this reason, compared with the 1st radio | wireless communication part 11, the 2nd radio | wireless communication part 12 has a high possibility of including an inappropriate channel in the some channel used for channel bonding. If an inappropriate channel is included, the second wireless communication unit 12 performs wireless communication with a narrow bandwidth. Therefore, the second wireless communication unit 12 may perform wireless communication with a narrower bandwidth than the first wireless communication unit 11. The second wireless communication unit 12 uses the second antenna unit 30 in common with the third wireless communication unit 13 when performing wireless communication. When the second antenna unit 30 is used in common, time division is used. In the time division, for example, the communication unit connected in a state in which power can be output to the second antenna unit 30 by the switch function of the duplexer dl, the second wireless communication unit 12 and the third wireless communication unit are connected. This is executed by switching to any one of 13.

  The third wireless communication unit 13 is a MIMO wireless communication, like the first wireless communication unit 11 and the second wireless communication unit 12. Further, the third wireless communication unit 13 performs wireless communication using channel bonding. Here, the third wireless communication unit 13 performs wireless communication with a bandwidth of 40 MHz by combining two channels. This is because the 2.4 GHz band has fewer channels that can be used for channel bonding than the 5 GHz band High and the 5 GHz band Low. The 2.4 GHz band is more likely to cause a decrease in communication speed due to interference than the 5 GHz band High and the 5 GHz band Low. For this reason, when an inappropriate channel is included in wireless communication with a bandwidth of 40 MHz, the third wireless communication unit 13 may execute wireless communication with a bandwidth of 20 MHz without using channel bonding. In such a case, for example, there are cases where there are many devices that cause interference, such as urban areas, and devices that perform wireless communication using the 2.4 GHz band.

  FIG. 3 is a diagram illustrating the directivity in the horizontal direction of the first antenna unit 20. FIG. 4 is a diagram illustrating the directivity of the second antenna unit 30 in the horizontal direction. 3 and 4 show the relationship between the direction (−180 to 180 °) and the antenna gain. In FIG. 3, the direction (maximum gain direction) in which the antenna gain of the first antenna unit 20 is maximized is 90 °.

  As shown in FIG. 3, the first antenna unit 20 has an antenna gain of 7 dBi in the maximum antenna gain direction. The direction in which the antenna gain is 4 dBi, which is 3 dBi lower than the antenna gain in the maximum direction, is 30 ° and 150 °. That is, the half width θ of the antenna beam be1 in the first antenna unit 20 is 120 °. The dedicated antenna 21 is, for example, a sector antenna having a reflector disposed on a dipole antenna or a Yagi / Uda antenna. In the present embodiment, the dedicated antenna 21 employs a Yagi / Uda antenna having a directivity of 120 ° and an antenna gain of 7 dBi. When the directivity is high, the radio wave output can be concentrated in a specific direction as compared with the case where the directivity is low. For this reason, when the directivity is high, stable wireless communication with the client device CL1 (FIG. 1) installed at a distant place is possible as compared with the case where the directivity is low. Specifically, the dedicated antenna 21 has a smaller communicable area even if the communicable distance is the same as that of the antenna having the same antenna gain and low directivity. For this reason, the dedicated antenna 21 with high directivity has a relatively small communicable area, so that it is possible to suppress a decrease in communication speed due to the connection of a large number of client devices CL1 and CL2 (FIG. 1). it can. Therefore, the dedicated antenna 21 can perform stable wireless communication with a specific connection destination by directing the maximum gain direction in a specific direction. In addition, an antenna with high directivity can easily reduce the correlation between the two dedicated antennas 211 and 212 as compared to a case with low directivity. Therefore, the distance between the two dedicated antennas 211 and 212 can be reduced as compared with the case where the directivity is low. In addition, when an antenna with high directivity and an antenna with low directivity have the same antenna gain, the antenna with high directivity is easier to miniaturize. In the present embodiment, the first antenna unit 20 has a mechanism (not shown) that changes the direction of the dedicated antenna 21. With this mechanism, the wireless LAN communication device 100 can adjust the antenna maximum gain direction of the dedicated antenna 21 to coincide with the direction in which the client device CL1 is installed.

  As shown in FIG. 4, the shared antenna 31 has an antenna gain of 2.14 dBi in the maximum antenna gain direction. Since the shared antenna 31 has an antenna gain of less than 3 dBi, the half width of the antenna beam be2 in the shared antenna 31 cannot be calculated. That is, the shared antenna 31 is an omnidirectional antenna. The second antenna unit 30 has less variation in antenna gain depending on the direction than the first antenna unit 20. For example, a half-wave dipole antenna or a monopole antenna can be used as the omnidirectional antenna. In the present embodiment, the shared antenna 31 is a pair of half-wave dipole antennas with an antenna gain of 2.14 dBi. The pair of half-wave dipole antennas are arranged so that the center axes of the antenna beams intersect each other vertically. In the present embodiment, the shared antenna 31 is an omnidirectional antenna, but is not limited thereto. The shared antenna 31 may be an antenna having directivity lower than that of the dedicated antenna 21. Even in this case, the second antenna unit 30 has less variation in antenna gain depending on the direction than the first antenna unit 20.

  FIG. 5 is a graph showing an output value of wireless communication executed by the wireless LAN communication device 100 according to the first embodiment. This graph shows the terminal input power and the radio wave output of the antenna units 20 and 30 when each of the wireless communication units 11 to 13 performs wireless communication using a bandwidth of 20 MHz as output values. In FIG. 5, the terminal input power is indicated by cross hatching, and the radio wave outputs of the antenna units 20 and 30 are indicated by single hatching. The terminal input power and the radio wave output are expressed in the same unit (mW / MHz). In the present embodiment, “terminal input power” refers to a 1 MHz band supplied from the wireless communication units 11 to 13 serving as transmitters to the connector terminals c1 and c2 of the antenna units 20 and 30 serving as antenna-type supply lines. Average power in width. The radio wave output of the antenna units 20 and 30 is defined by equivalent isotropic radiant power in a bandwidth of 1 MHz. The “equivalent isotropic radiated power” is obtained by multiplying the average power (terminal input power) supplied to the connector terminals c1 and c2 by the antenna gain in the maximum gain direction of the antenna units 20 and 30. Note that the equivalent isotropic radiated power is also referred to as effective isotropic radiated power.

  Each of the power amplifiers a1 to a3 is designed so that the power input from the wireless communication units 11 to 13 to the antenna units 20 and 30 is less than or equal to the legal output limit. Here, the power input from the wireless communication units 11 to 13 to the antenna units 20 and 30 is evaluated by the average power input from the wireless communication units 11 to 13 to the connector terminals c1 and c2. The antenna gains of the antenna units 20 and 30 are designed so that the radio wave output of the antenna units 20 and 30 is less than the legal output limit. Here, the wireless LAN communication device 100 sets the maximum output value for each frequency band so as to be equal to or less than the legal output limit. Below, the maximum value of the output value of each frequency band in the case of performing wireless communication using a bandwidth of 20 MHz is shown. In the 5 GHz band High, the maximum value of the terminal input power is 10 mW / MHz, and the maximum value of the radio wave output of the first antenna unit 20 is 50 mW / MHz. The maximum value of the radio wave output in the 5 GHz band Low is 10 mW / MHz. The maximum value of terminal input power in the 2.4 GHz band is 10 mW / MHz. Therefore, the 5 GHz band High can be wirelessly communicated with a higher radio wave output than the 5 GHz band Low. When the radio wave output is high, compared with the case where the radio wave output is low, wireless communication with client devices CL1 and CL2 (FIG. 1) located far away is possible.

  The wireless communication using the 5 GHz band High executed by the first wireless communication unit 11 uses the first antenna unit 20 provided exclusively for the first wireless communication unit 11 and wirelessly uses the 5 GHz band Low. It is not limited to the maximum value of radio wave output in communication. Therefore, wireless communication in the 5 GHz band High can be executed with a higher radio wave output than in the 5 GHz band Low. The radio wave output of the first antenna unit 20 that performs wireless communication using the 5 GHz band High is preferably higher than the radio wave output of the second antenna unit 30 when using the 5 GHz band Low, and is twice as high. More preferably. Furthermore, the radio wave output of the first antenna unit 20 that performs wireless communication using the 5 GHz band High is more preferably 20 mW / MHz to 50 mW / MHz, and most preferably the same as the maximum value. . The same level as the maximum value means 40 mW / MHz to 50 mW / MHz, which is 80% to 100% of the maximum value (50 mW / MHz) of radio wave output. Here, the terminal input power of the first connector terminal c1 is the terminal input of the second connector terminal c2 if the radio communication radio output in the 5 GHz band High is higher than the radio communication radio output in the 5 GHz band Low. It may be lower than the electric power. In the present embodiment, the radio wave output of the first antenna unit 20 that performs wireless communication using the 5 GHz band High is 50 mW / MHz.

  FIG. 6 is a block diagram showing a configuration of a wireless LAN communication apparatus 400 according to the comparative example. FIG. 7 is a graph showing output values of wireless communication executed by the wireless LAN communication device 400 according to the comparative example. As the output values, the terminal input power and the radio wave outputs of the antenna units 420 and 430 when the wireless communication units 11 to 13 perform wireless communication using a bandwidth of 20 MHz are shown. Hereinafter, the wireless LAN communication apparatus 400 according to the comparative example is referred to as a comparison apparatus 400.

  As shown in FIG. 6, the first antenna unit 420 included in the comparison device 400 executes the first wireless communication unit 11 that performs wireless communication using the 5 GHz band High and the wireless communication that uses the 5 GHz band Low. It is connected to the second wireless communication unit 12. The antenna 421 included in the first antenna unit 420 is an antenna having an antenna gain of 2.14 dBi. Due to the maximum value of the radio wave output in the 5 GHz band Low, it is difficult for the first antenna unit 420 to use an antenna having a high antenna gain. For this reason, compared with the antenna gain of the 1st antenna part 20 (Drawing 2) of a 1st embodiment, the antenna gain of the 1st antenna part 420 is low. The second antenna unit 430 is connected to the third wireless communication unit 13 that performs wireless communication in the 2.4 GHz band. The antenna 431 provided in the second antenna unit 430 is an antenna having an antenna gain of 2.14 dBi. Other configurations are the same as those of the wireless LAN communication device 100 according to the first embodiment. In the comparison device 400, the same configuration as the wireless LAN communication device 100 according to the first embodiment is denoted by the same reference numerals as in the first embodiment, and detailed description thereof is omitted.

  As shown in FIG. 7, wireless communication in the 5 GHz band High is performed with a lower radio wave output than 50 mW / MHz which is the maximum value of the radio wave output in the 5 GHz band High. This is because the first antenna unit 420 is shared by the first wireless communication unit 11 and the second wireless communication unit 12, so that the radio wave output of the first antenna unit 420 is 5 GHz band Low. This is because it is limited to a radio wave output limit value or less in wireless communication. For this reason, the comparison apparatus 400 cannot output the radio wave output of the wireless communication in the 5 GHz band High. Therefore, in the comparison device 400, compared with the wireless LAN communication device 100 according to the first embodiment, the communicable distance is shortened, and there is a possibility that the installation position of a television or wireless LAN relay device having a large communication capacity may be limited.

  FIG. 8 is a schematic diagram of a house WH in which a comparative experiment for comparing communication speeds of the wireless LAN communication device 100 and the comparison device 400 according to the first embodiment is performed. FIG. 9 is a table showing the results of the comparative experiment. An experiment (comparison experiment) was performed to compare the communication speed (data transmission speed) of the wireless LAN communication apparatus 100 (hereinafter referred to as the wireless LAN communication apparatus 100) according to the first embodiment and the communication speed of the comparison apparatus 400. Hereinafter, the contents and results of the comparative experiment will be described with reference to FIGS. 8 and 9.

  The comparative experiment was conducted in the wooden house WH shown in FIG. The width of one floor of this wooden house WH is about 11 m long by about 11 m wide, and the height from the first floor to the second floor is about 3 m. The walls separating the rooms of the wooden house WH are indicated by hatching. The wooden house WH has four rooms R1 on the first floor portion and five rooms R2 to R6 on the second floor portion. In this comparative experiment, the wireless LAN communication device 100 and the comparison device 400 are installed at a point A that is the central portion of the room R1 on the first floor portion of the wooden house WH. The client device CL4 connected to the Internet via the wireless LAN communication device 100 and the comparison device 400 performs wireless communication at the respective points B to F that are the central portions of the rooms R2 to R6 on the second floor of the wooden house WH. did. The client device CL4 is a smartphone that executes 2 × 2 MIMO wireless communication using 5 GHz band High.

  The positional relationship between the point A where the wireless LAN communication device 100 and the comparison device 400 are installed and the points B to F where the client device CL4 performs wireless communication will be described. Point B is directly above point A. Between the point A and the point B, there is a floor fr on the second floor of the house WH. Between the point A and the point C, there is a wall W1 and a floor fr. Between the point A and the point D, there is a wall W1 and a floor fr. The distance between the point A and the point D is larger than the distance between the point A and the point C. Between the point A and the point E, there are two walls W2, W4 and a floor fr. Between the point A and the point F, there are two walls W2, W5 and a floor fr. Of the distances between the point A and the points B to F, the distance between the point A and the point F is the largest. Note that the maximum gain direction of the antenna beam of the 5 GHz band High of the wireless LAN communication device 100 is toward the point F. In addition, between the room R4 including the point E and the room R5 including the point F, there is a staircase connecting the first floor and the second floor.

  As shown in FIG. 9, the wireless LAN communication device 100 shows a higher communication speed than the comparison device 400 at all points B to F. This is because the wireless LAN communication device 100 performs wireless communication with a higher radio wave output than the comparison device 400. Further, the communication speed of the wireless LAN communication device 100 at the point F indicates a communication speed of 14 Mbps, which is about 14 times higher than the communication speed of 1 Mbps of the comparison device 400. This is because the point F is the maximum gain direction of the antenna beam of 5 GHz band High of the wireless LAN communication apparatus 100, that is, the direction in which the radio wave output in the wireless LAN communication apparatus is the highest.

  According to the first embodiment described above, the wireless LAN communication device 100 includes the first antenna unit 20 connected to the first wireless communication unit 11, the second wireless communication unit 12, and the third wireless communication unit 11. And a second antenna unit 30 connected to the wireless communication unit 13. For this reason, the first wireless communication unit 11 and the first antenna unit 20 that perform wireless communication using the 5 GHz band High have the maximum output in the 5 GHz band Low set to be equal to or less than the legal output limit. Not limited to value. Therefore, the radio wave output of the first antenna unit 20 can be made higher than the radio wave output of the second antenna unit 30 when the second radio communication unit 12 performs radio communication. Thereby, the wireless communication using the 5 GHz band High can be connected to the client devices CL1 and CL2 that are farther than the wireless communication using the 5 GHz band Low. Here, the 5 Hz band High is suitable for large-capacity communication using a wide bandwidth compared to the 2.4 GHz band and the 5 GHz band Low. Therefore, the wireless LAN communication device 100 can perform stable large-capacity communication compared to the 5 GHz band Low and the 2.4 GHz band when performing wireless communication with the client device CL1 that requires a large-capacity communication installed far away. Wireless communication can be performed using the 5 GHz band High.

  In addition, according to the first embodiment, the wireless LAN communication device 100 has the dedicated antenna 21 having higher directivity than the shared antenna 31. For this reason, the first antenna unit 20 can have an antenna gain higher than that of the second antenna unit 30. In addition, when the directivity is high, the wireless LAN communication device 100 can stably output a high-output radio wave in a specific direction as compared with the case where the directivity is low. Therefore, the wireless LAN communication device 100 can suppress a decrease in communication speed even under conditions where the radio wave communication speed is likely to decrease. The condition that the communication speed is likely to decrease is, for example, a case where the wireless LAN communication device 100 installed on the first floor of the house is connected to the client devices CL1 and CL2 used on the second floor. Therefore, for example, the wireless LAN communication device 100 can suppress a decrease in communication speed when connected to a television or wireless LAN relay device used on a different floor from the wireless LAN communication device 100.

  Further, according to the first embodiment, the wireless LAN communication device 100 includes the second antenna unit 30 that is a shared antenna unit in the 5 GHz band Low and the 2.4 GHz band. For this reason, the wireless LAN communication apparatus 100 can be reduced in size compared with the case where it has a separate antenna part in 5 GHz band Low and 2.4 GHz band.

  In addition, according to the first embodiment, the wireless LAN communication device 100 can perform wireless communication using channel bonding in wireless communication using the 5 GHz band High. Compared to the 2.4 GHz band, the 5 GHz band High can stably execute wireless communication using a wide bandwidth (for example, 80 MHz or 160 MHz bandwidth) by channel bonding. Thereby, the wireless LAN communication apparatus 100 can stably perform wireless communication using a wide bandwidth as compared with the case where channel bonding is not used in the 5 GHz band High. Therefore, the wireless LAN communication device 100 is a device that requires stable and continuous large-capacity communication, for example, high-pixel video content such as 4K and 8K television, and wireless communication that enables wireless communication in the entire house. Delay in wireless communication with the relay device can be suppressed.

  In addition, according to the first embodiment, the wireless LAN communication device 100 includes the omnidirectional antenna unit 30 in the 5 GHz band Low and the 2.4 GHz band. That is, when the distance from the wireless LAN communication device 100 is constant, the second antenna unit 30 to which the second and third wireless communication units 12 and 13 are connected is connected to the first wireless communication unit 11. The fluctuation of the radio wave output is small compared to the first antenna unit 20 to which is connected. Accordingly, the wireless LAN communication device 100 can suppress the connection with the client device CL2 from becoming unstable even when the client device CL2 moves during use.

B. Second Embodiment A wireless LAN communication device 100 according to the second embodiment is different from the first embodiment in that the dedicated antenna 21 has the same antenna gain as the shared antenna 31. In the present embodiment, the dedicated antenna 21 is a half-wave dipole antenna having an antenna gain of 2.14 dBi. Since the second embodiment has the same configuration as that of the first embodiment, the same reference numerals as those of the first embodiment are given and description thereof is omitted.

  FIG. 10 is a graph showing an output value of wireless communication executed by the wireless LAN communication device 100 according to the second embodiment. As output values, the terminal input power and the radio wave outputs of the antenna units 20 and 30 when the wireless communication units 11 to 13 perform wireless communication using a bandwidth of 20 MHz are shown. In FIG. 10, the terminal input power is indicated by cross hatching, and the radio wave outputs of the antenna units 20 and 30 are indicated by single hatching. Since the output values of the wireless communication in the 5 GHz band Low and the wireless communication in the 2.4 GHz band are the same as those in the first embodiment, description thereof will be omitted. In the present embodiment, the average power input to the first connector terminal c1 is 10 mW / MHz. This is because the maximum value of average power in the 5 GHz band High is 10 mW / MHz. The average power input from the first wireless communication unit 11 to the first antenna unit 20 is higher than the average power input from the second wireless communication unit 12 to the second antenna unit 30. Since the antenna gain of the first antenna unit 20 is 2.14 dBi, the radio wave output of the first antenna unit 20 is about 16 mW / MHz. Even in this case, the radio wave output of the first antenna unit 20 is higher than the radio wave output of the second antenna unit 30 when the second radio communication unit 12 executes radio communication.

  According to the second embodiment described above, similarly to the first embodiment, the radio wave output of the first antenna unit 20 is the second antenna unit when the second radio communication unit 12 performs radio communication. It can be higher than 30 radio wave outputs. Thereby, the wireless communication using the 5 GHz band High can be connected to a client device farther than the wireless communication using the 5 GHz band Low. Further, the same effects as those of the first embodiment can be obtained with regard to downsizing of the wireless LAN communication device 100, stabilization of continuous large-capacity communication, and suppression of reduction in communication speed.

C. Third Embodiment FIG. 11 is a schematic diagram illustrating a configuration of a wireless LAN communication device 600 according to a third embodiment. The wireless LAN communication apparatus 600 according to the present embodiment includes a first wireless communication unit 11, a second wireless communication unit 12, a third wireless communication unit 13, a first antenna unit 20, and a second The antenna unit 30, the wired communication unit 40, the baseband processor 50, the storage unit 60, the control unit 90, the housing 500, and the direction changing unit 530 are included. The wiring that electrically connects the first antenna unit 20 and the first wireless communication unit 11 is provided so as to pass through the inside of the direction changing unit 530. In the present embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Note that the wireless LAN communication apparatus 600 employs a Yagi / Uda antenna, which is a directional antenna, as the dedicated antenna 21 as in the wireless LAN communication apparatus 100 according to the first embodiment. The directional antenna used as the dedicated antenna 21 is, for example, a patch antenna.

  The housing 500 has a substantially rectangular parallelepiped shape. In the wireless LAN communication apparatus 600 according to the present embodiment, the first to third wireless communication units 11 to 13, the second antenna unit 30, the wired communication unit 40, the baseband processor 50, and the storage unit 60 are provided. The control unit 90 is accommodated in the housing 500. The first antenna unit 20 is disposed outside the housing 500. The direction changing unit 530 is disposed at a connection portion between the first antenna unit 20 and the housing 500. The outer wall surface 502 of the housing 500 has intake / exhaust ports (not shown). In the present embodiment, the intake / exhaust port includes an intake port as a slit provided at an end portion on the bottom surface 505 side and an exhaust port as a slit provided at an end portion on the upper surface 504 side of the outer wall surface 502. Have. Note that the casing 500 is not limited to a substantially rectangular parallelepiped shape, and may have another shape.

  FIG. 12 is a schematic diagram illustrating an appearance of a wireless LAN communication device 600 according to the third embodiment. FIG. 13 is a first side view of a wireless LAN communication device 600 according to the third embodiment. FIG. 14 is a second side view of the wireless LAN communication device 600 according to the third embodiment. FIG. 15 is a first top view of a wireless LAN communication device 600 according to the third embodiment. FIG. 16 is a second top view of the wireless LAN communication device 600 according to the third embodiment. In FIG. 12, the X direction and the Y direction are horizontal directions, and the Z direction is a vertical direction. Further, the + Z direction is a vertically upward direction, and the −Z direction is a vertically downward direction. A wireless LAN communication device 600 shown in FIG. 12 has a bottom surface 505 installed on a horizontal plane. The state where the bottom surface 505 is installed on the horizontal plane is also referred to as the installation state of the wireless LAN communication device 600.

  The wireless LAN communication apparatus 600 includes an antenna accommodating unit 510 as a case for accommodating the first antenna unit 20 therein. The first antenna unit 20 is arranged on the arrangement outer wall surface 501 of the housing 500 in a state of being accommodated in the antenna accommodation unit 510. The arrangement outer wall surface 501 is a side surface of the housing 500 and is a surface rising from the bottom surface 505. The antenna accommodating portion 510 is attached to the housing 500 via the direction changing portion 530.

  The dedicated antennas 211 and 212 included in the first antenna unit 20 are disposed on an antenna substrate that is a printed circuit board. Inside the antenna accommodating portion 510, the two dedicated antennas 211 and 212 are arranged so that the respective maximum gain directions are the same, and are arranged so that the antenna substrates intersect each other vertically. Here, the term “perpendicular” includes a state of being substantially vertical, for example, an angle in a range of 85 degrees to 90 degrees. When the antenna substrates cross vertically, the antenna beams output from the two dedicated antennas 211 and 212 have different polarizations. Since the correlation is reduced by polarization in addition to the distance of the antenna substrate, the first antenna unit 20 can be miniaturized. In addition, the design of the wireless LAN communication device 600 can be improved by reducing the size of the first antenna unit 20 disposed outside the housing 500.

  In the present embodiment, the first wireless communication unit 11 performs 2 × 2 MIMO wireless communication. In the 2 × 2 MIMO scheme, the radio wave output for each antenna can be made higher than the MIMO scheme using 3 or more antennas such as the 3 × 3 MIMO scheme and the 4 × 4 MIMO scheme for transmission and reception. When the radio wave output is high, the wireless LAN communication device 600 can perform wireless communication even under conditions that are disadvantageous for wireless communication as compared to the case where the radio wave output is low. Conditions that are disadvantageous for wireless communication are, for example, when the distance to the client device that is the object of communication is long, when there are many shields, or when there are shields with high radio wave shielding. The shield is, for example, a wall, a floor, a ceiling, furniture, or the like. The shielding object having a high barrier property is, for example, a concrete wall. Therefore, for example, when used in a reinforced concrete building, the 2 × 2 MIMO system communicates with client devices arranged on different floors and rooms as compared to the MIMO system using three or more antennas for transmission and reception. Is easy. In addition, the 2 × 2 MIMO scheme can easily reduce the size of the first antenna unit 20 as compared with the MIMO scheme that uses three or more antennas for transmission and reception. Note that the communication method is not limited to the 2 × 2 MIMO method, and may be another method. For example, a 4 × 4 MIMO scheme may be adopted. In an environment with relatively low radio wave blocking such as a wooden house, communication with client devices installed on different floors or different rooms is possible even with the 4 × 4 MIMO system. When the 4 × 4 MIMO scheme is adopted, the first antenna unit 20 has four dedicated antennas, and these four dedicated antennas are accommodated inside the antenna accommodating unit 510.

  The antenna housing part 510 has a direction display part 520. The direction display unit 520 constitutes a part of the antenna housing unit 510 and is visible from the outside. The direction display unit 520 indicates the maximum gain direction GD of the first antenna unit 20. In the present embodiment, the direction display unit 520 is a part of the wall surface of the antenna housing unit 510 and is formed on the maximum gain direction GD side. The direction display unit 520 is formed of another member that is different in color from the other wall surfaces in the antenna housing unit 510. By forming the direction display unit 520 on the maximum gain direction GD side of the wall surface of the antenna housing unit 510, the side on which the direction display unit 520 is located is the maximum gain direction GD without any special operation by the user. And can be easily grasped. In addition, the direction display part 520 is not limited to this, For example, you may show the maximum gain direction GD of the 1st antenna part 20 with a shape, a pattern, a color, or these combination. In the case where the direction display unit 520 displays the maximum gain direction GD depending on the shape, for example, the direction display unit 520 has a pointed shape at the tip of the direction display unit 520, and the direction display unit 520 is set so that the direction in which the tip faces is the maximum gain direction GD. What is necessary is just to arrange. In a case where the direction display unit 520 displays the maximum gain direction GD by a pattern, for example, an arrow indicating the maximum gain direction GD may be formed as the direction display unit 520. In addition, the direction display unit 520 is a mechanism that indicates the maximum gain direction GD as necessary, for example, a mechanism in which a light source provided on the maximum gain direction GD side portion of the antenna accommodating unit 510 is turned on by a user operation. May be.

  The direction changing unit 530 can change the direction of the dedicated antenna 21 by changing the direction of the antenna accommodating unit 510. By changing the direction of the dedicated antenna 21, the maximum gain direction GD of the first antenna unit 20 is changed. That is, the direction changing unit 530 changes the maximum gain direction GD. Here, it is preferable that the direction changing unit 530 can change the maximum gain direction GD three-dimensionally. That is, it is preferable that the direction changing unit 530 can change the angle formed by the horizontal direction and the maximum gain direction GD, and can change the maximum gain direction GD in the horizontal direction. When the angle formed between the horizontal direction and the maximum gain direction GD can be changed, compared to the case where the angle cannot be changed, the connection destination installed on a different floor from the floor where the wireless LAN communication device 600 is installed The maximum gain direction GD can be easily directed. When the maximum gain direction GD in the horizontal direction can be changed, the maximum gain direction GD can be easily directed to the client device without changing the arrangement position of the wireless LAN communication device 600. Moreover, it is preferable that the direction changing unit 530 can change the maximum gain direction GD so as to be directed in the horizontal direction. Since the maximum gain direction GD can be changed so as to be directed in the horizontal direction, the maximum gain direction GD can be easily directed to the client devices installed on the same floor. As the direction changing unit 530 that can change the maximum gain direction GD three-dimensionally, for example, a hinge mechanism having a plurality of intersecting rotation axes, a flexible arm that can be bent, or a ball joint can be used. In the present embodiment, the direction changing unit 530 is a hinge mechanism having a first rotation axis dx1 and a second rotation axis dx2 that are two rotation axes that intersect perpendicularly.

  The first rotation axis dx1 of the direction changing unit 530 is a rotation axis perpendicular to the outer wall surface 501. The direction changing unit 530 can change the maximum gain direction GD by rotating around the first rotation axis dx1. The second rotation axis dx <b> 2 of the direction changing unit 530 is a rotation axis parallel to the arrangement outer wall surface 501. The direction changing unit 530 can change the maximum gain direction GD by rotating around the second rotation axis dx2. The second rotation axis dx2 rotates around the first rotation axis dx1 according to the rotation of the direction changing unit 530 around the first rotation axis dx1. The direction changing unit 530 can change the maximum gain direction GD in a direction away from or closer to the arrangement outer wall surface 501 by the second rotation axis dx2.

  The direction changing unit 530 changes the first rotation angle θ1 about the first rotation axis dx1 by rotating the antenna accommodating portion 510 around the first rotation axis dx1. The changeable range of the first rotation angle θ1 is a range from 0 ° to 270 °. Here, in the present embodiment, when the maximum gain direction GD is the + Y direction, the reference position (the first rotation angle θ1 is 0 °) that serves as a reference for the first rotation angle θ1. When the first rotation angle θ1 is 90 °, the maximum gain direction GD is vertically upward (+ Z direction) in the installed state. When the first rotation angle θ1 is 180 °, the maximum gain direction GD is the + Y direction in the installed state. When the first rotation angle θ1 is 270 °, the maximum gain direction GD is the vertically downward direction (−Z direction) in the installed state.

  The direction changing unit 530 can change the second rotation angle θ2 about the second rotation axis dx2 by rotating the antenna accommodating portion 510 around the second rotation axis dx2. The changeable range of the second rotation angle θ2 is a range of 0 ° to 90 °. Here, in the present embodiment, the reference position (the second rotation angle θ2 is 0 °) serving as the reference for the second rotation angle θ2 when the maximum gain direction GD is the −X direction (the direction perpendicular to the outer wall surface 501). And When the second rotation angle θ2 is 90 °, the maximum gain direction GD is a direction along the outer wall surface 501 in the installed state.

  For example, as shown in FIG. 13, when the first rotation angle θ1 is 90 °, the maximum gain direction GD is set to the vertical upward direction (+ Z) by rotating the antenna accommodating portion 510 around the second rotation axis dx2. Direction) to the horizontal direction. Further, for example, as shown in FIG. 14, when the first rotation angle θ1 is 270 °, the antenna accommodating portion 510 is rotated around the second rotation axis dx2, so that the maximum gain direction GD is set vertically downward ( It can be changed in the range from -Z direction) to the horizontal direction.

  As described above, the direction changing unit 530 changes the angle θt (FIGS. 13 and 14) between the maximum gain direction GD and the horizontal direction by having the first rotation axis dx1 and the second rotation axis dx2. Is possible. Specifically, in the present embodiment, by changing the angle θt formed by the horizontal direction and the maximum gain direction GD, the maximum gain direction GD is changed from the range from the horizontal direction to the vertical upward direction (FIG. 13) and from the horizontal direction. It can be changed in any of the ranges up to the vertically downward direction (FIG. 14). That is, the maximum gain direction GD can be upward (elevation angle) or downward (decline).

  The direction changing unit 530 can change the maximum gain direction GD in the horizontal direction. For example, as shown in FIG. 15, when the first rotation angle θ1 is 0 °, the maximum gain direction GD is set along the XY plane by rotating the antenna accommodating portion 510 around the second rotation axis dx2. It can be changed in the range from the + Y direction to the -X direction. Further, for example, as shown in FIG. 16, when the first rotation angle θ1 is 180 °, the antenna accommodating portion 510 is rotated around the second rotation axis dx2, so that the maximum gain direction GD is along the XY plane. And can be changed in the range from the -Y direction to the -X direction.

  Further, in the wireless LAN communication device 600, the antenna accommodating portion 510 that accommodates the first antenna portion 20 is disposed on the outer wall surface (arranged outer wall surface 501 in the present embodiment) of the housing 500, and the second antenna portion 30 is disposed. It is provided inside the housing 500 (FIGS. 11 and 12). This structure functions as an identification unit visible from the outside for identifying the first antenna unit 20. The identification unit enables the user of the wireless LAN communication device 600 to easily identify the first antenna unit 20. Therefore, the user can distinguish between the first antenna unit 20 that has directivity and requires adjustment of the maximum gain direction GD, and the second antenna unit 30 that does not have directivity. . Therefore, the wireless LAN communication apparatus 600 uses the first antenna unit 20 when the user mistakenly operates the first antenna unit 20 and the second antenna unit 30 or when the first antenna unit 20 is operated. The troublesomeness due to the time taken for identification can be reduced. In addition, an identification part is not limited to said structure. For example, when the second antenna unit 30 is provided outside the housing 500, an antenna housing unit 510 that houses the first antenna unit 20 and a housing unit that houses the second antenna unit 30 are provided. Different colors may be used for identification. In this case, the color difference functions as an identification unit. Moreover, you may make it possible to identify the accommodating part which accommodates the antenna accommodating part 510 and the 2nd antenna part 30 by the difference in a shape or a pattern instead of a color.

  As shown in FIG. 12, in the wireless LAN communication device 600, the first antenna unit 20 is arranged on the arrangement outer wall surface 501 that is the side surface of the housing 500 in the vertically used state. Here, the vertical placement indicates that the angle on the acute angle side formed by the surface having the largest outer shape (outer periphery) of the housing 500 and the horizontal plane (XY plane) is 45 ° or more. It should be noted that it is preferable that the angle formed by the surface having the largest outer shape of the housing 500 and the horizontal plane is substantially vertical in the use state in the vertical position. In the present embodiment, the surface having the largest outer shape of the housing 500 is the outer wall surface 501 and the outer wall surface 502 facing the outer wall surface 501. Further, in the use state in the vertical position, the angle formed between the outer wall surfaces 501 and 502 and the horizontal plane is vertical. When the wireless LAN communication device 600 is used in the vertical position, it is possible to reduce the installation area in the horizontal direction as compared with the horizontal state. In the present embodiment, the circuit boards of the wireless communication units 11 to 13 (FIG. 11) are arranged inside the housing 500 so as to be substantially parallel to the arrangement outer wall surface 501. For this reason, when the wireless LAN communication apparatus 600 is in a vertically placed state, the angle formed by the circuit board and the horizontal plane is vertical.

  The wireless LAN communication device 600 preferably has a state maintaining mechanism for placing the wireless LAN communication device 600 in a vertically installed state. In the present embodiment, the bottom surface 505 functions as a state maintaining mechanism. Note that the state maintaining mechanism is not limited to this. For example, the state maintaining mechanism may be a mechanism that allows the wireless LAN communication device 600 to maintain a vertically used state by a plurality of legs, or a portion of the outer wall surface of the housing 500 and the legs to the wireless LAN communication device 600. It may be a mechanism that maintains the use state in the vertical position. In addition, the state maintaining mechanism may be provided separately from the casing 500, such as a pedestal that allows the wireless LAN communication device 600 to maintain a vertically used state.

  In the wireless LAN communication apparatus 600, ventilation in the housing 500 through the intake / exhaust port will be described. When the air in the housing 500 becomes higher than the outside air (outside air) due to the heat generated by the circuit board, the air in the housing 500 has a lower density than the outside air. In this case, buoyancy is generated in the air in the housing 500, so that the wireless LAN communication device 600 takes in outside air from the air intake port provided on the lower side (the bottom surface 505 side) of the outer wall surface 502 of the housing 500. Then, the air in the housing 500 is exhausted from the exhaust port provided on the upper side (the upper surface 504 side) of the outer wall surface 502. That is, the wireless LAN communication device 600 ventilates the housing 500 using a so-called chimney effect. When performing ventilation using the chimney effect, ventilation can be efficiently performed when the height difference between the intake port and the exhaust port is larger than when the height difference between the intake port and the exhaust port is small. Here, the wireless LAN communication device 600 can easily make a difference in height between the intake port and the exhaust port, as compared with the wireless LAN communication device that is being used in the horizontal orientation. For this reason, the wireless LAN communication apparatus 600 can efficiently exchange the air in the housing 500 and the outside air as compared with the wireless LAN communication apparatus that is in a horizontally used state. Therefore, the wireless LAN communication device 600 can easily suppress the temperature rise as compared with the wireless LAN communication device in the horizontal use state.

  When the first antenna unit 20 is placed on the upper surface 504 side of the side surface of the housing 500 in the vertically used state, or when the first antenna unit 20 is provided on the upper surface 504, the first antenna unit 20 is used horizontally. Compared to the state, the first antenna unit 20 can be positioned higher. Since the first antenna unit 20 is provided at a high position, the communication speed is reduced by reflection of radio waves on the installation surface of the wireless LAN communication device 600 as compared with the case where the first antenna unit 20 is provided at a low position. Can be suppressed. In the present embodiment, the first antenna unit 20 is arranged on the upper surface 504 side of the arrangement outer wall surface 501 with respect to the bottom surface 505.

  According to the third embodiment described above, since the wireless LAN communication device 600 includes the direction changing unit 530, the maximum gain direction GD can be easily changed three-dimensionally. Therefore, in the wireless LAN communication device 600, a client device (for example, a 4K television or a wireless LAN relay device) is installed with the maximum gain direction GD of the first antenna unit 20 as compared with the case where the direction changing unit 530 is not provided. It can be easily pointed in the direction where it is. For example, by changing the maximum gain direction GD by the direction changing unit 530, the maximum gain direction GD can be directed in the direction in which the client device is installed without changing the arrangement position of the wireless LAN communication device 600.

  Further, according to the third embodiment, the wireless LAN communication device 600 can point the maximum gain direction GD in a direction intersecting the horizontal direction (upward direction or downward direction) (FIGS. 13 and 14). . As a result, the maximum gain direction GD can be easily directed to the client device installed on a different floor from the wireless LAN communication device 600. For example, it is assumed that the wireless LAN communication device 600 is installed on the second floor of a house and the client device is installed on the first and third floors of the house. Here, when the LAN wiring for connecting to the Internet is provided only on the second floor, when moving the wireless LAN communication device to a different floor, it is necessary to route the wired cable to a different floor. When a wired cable is routed to a different floor, it is necessary to lengthen the wired cable. However, according to the wireless LAN communication apparatus 600 according to the present embodiment, the installation position of the wireless LAN communication apparatus 600 is moved from the second floor to the first floor by adjusting the maximum gain direction GD downward by the direction changing unit 530. Without making it possible, the maximum gain direction GD can be directed to the client device on the first floor. Further, by adjusting the maximum gain direction GD upward by the direction changing unit 530, the maximum gain direction GD is set to the client device on the third floor without moving the installation position of the wireless LAN communication device 600 from the second floor to the third floor. Can be directed. Since the wireless LAN communication apparatus 600 according to the present embodiment can change the maximum gain direction GD in the vertical direction without greatly changing the installation location, a cable connected to the wireless LAN communication apparatus 600 (for example, for connecting to the Internet). Increase in the length of the wired cable) can be suppressed.

  Moreover, according to the said 3rd Embodiment, the direction change part 530 is arrange | positioned on the outer wall surface (this embodiment outer wall surface 501) of the housing | casing 500 (FIG. 13). Thereby, compared with the case where the direction change part 530 is arrange | positioned at the angle | corner where several outer wall surfaces cross, the intensity | strength of the connection part of the housing | casing 500 and the direction change part 530 can be made high easily.

  Further, according to the third embodiment, similarly to the first embodiment, the radio wave output of the first antenna unit 20 is the second antenna unit when the second radio communication unit 12 performs radio communication. It can be higher than 30 radio wave outputs. Thereby, the wireless communication using the 5 GHz band High can be connected to a client device farther than the wireless communication using the 5 GHz band Low. Further, the same effects as those of the first embodiment can be obtained with regard to downsizing of the wireless LAN communication device 100, stabilization of continuous large-capacity communication, and suppression of reduction in communication speed.

  The wireless LAN communication device 600 is preferably designed so that the maximum gain direction GD of the first antenna unit 20 cannot be directed to the second antenna unit 30. In the present embodiment, the first antenna unit 20 is arranged on the outer wall surface (specifically, the outer wall surface 501) of the housing 500, and the second antenna unit 30 is arranged inside the housing 500, The maximum gain direction GD of the first antenna unit 20 cannot be directed to the second antenna unit 30. There is a possibility that interference occurs between the 5 GHz band High used by the first antenna unit 20 for wireless communication and the 5 GHz band Low used by the second antenna unit 30 for wireless communication. The interference occurs, for example, when the maximum gain direction GD of the first antenna unit 20 faces the second antenna unit 30. This is because the 5 GHz band High and the 5 GHz band Low are close in frequency to the extent that interference can occur. When interference occurs, wireless communication may not be performed normally. Therefore, the maximum gain direction GD of the first antenna unit 20 is designed so as not to be directed to the second antenna unit 30, so that radio wave interference between the 5 GHz band High and the 5 GHz band Low can be suppressed.

D. Fourth Embodiment FIG. 17 is a first schematic diagram illustrating an appearance of a wireless LAN communication device 800 according to a fourth embodiment. FIG. 18 is a second schematic diagram illustrating an appearance of a wireless LAN communication device 800 according to the fourth embodiment. In FIG. 17 and FIG. 18, the wireless LAN communication device 800 is in a vertically used state as with the wireless LAN communication device 600 according to the third embodiment. In the wireless LAN communication apparatus 800 according to the fourth embodiment, the first antenna unit 20 for performing wireless communication using 5 GHz band High has four dedicated antennas (not shown). These four dedicated antennas are accommodated in two antenna accommodating portions 510. Each antenna accommodating portion 510 accommodates a pair of dedicated antennas that are two dedicated antennas. The pair of dedicated antennas are arranged so that the maximum gain directions are the same and the substrates cross each other vertically. Each antenna accommodating unit 510 includes a direction display unit 520 that indicates the maximum gain directions GD1 and GD2 of the pair of dedicated antennas accommodated.

  In the present embodiment, the two antenna accommodating portions 510 are respectively disposed on the first arrangement outer wall surface 501 and the second arrangement outer wall surface 502 facing each other. Each antenna accommodating portion 510 is disposed in the housing 500 via the direction changing portion 530. By changing the maximum gain directions GD1 and GD2 three-dimensionally, each direction changing unit 530 can change the maximum gain directions GD1 and GD2 of the dedicated antennas accommodated in the antenna accommodating unit 510 three-dimensionally. is there. For this reason, the direction changing unit 530 can change the maximum gain directions GD1 and GD2 of the dedicated antennas accommodated in the antenna accommodating units 510 so as to be in the same direction. For example, as shown in FIG. 17, the maximum gain directions GD1 and GD2 can be set vertically upward. Further, as shown in FIG. 18, the direction changing unit 530 can change the maximum gain direction GD1 and the maximum gain direction GD2 so as to face different directions.

  The wireless LAN communication apparatus 800 according to the present embodiment can execute 4 × 4 MIMO wireless communication when the maximum gain directions GD of the dedicated antennas accommodated in the antenna accommodation units 510 are the same. It is. In addition, when the maximum gain direction GD of the dedicated antenna accommodated in each antenna accommodating unit 510 is different, the wireless LAN communication device 800 is a client device in which the pair of dedicated antennas are installed in different directions. Can be used for communication with. In this case, using a pair of dedicated antennas, 2 × 2 MIMO wireless communication in two directions using 5 GHz band High is simultaneously performed. Switching between 2 × 2 wireless communication and 4 × 4 wireless communication is performed by the control unit 90.

  The wireless LAN communication apparatus 800 according to the fourth embodiment described above can switch between 4 × 4 MIMO wireless communication in one direction and 2 × 2 MIMO wireless communication in two directions. As a result, 4 × 4 MIMO wireless communication, which has a larger communication capacity than the 2 × 2 MIMO method, is possible for a client device that supports 4 × 4 MIMO wireless communication. Further, the wireless LAN communication device 800 can perform 2 × 2 MIMO wireless communication in two directions in which wireless communication using a 5 GHz band High can be performed with a client device installed in different directions as necessary. .

  Further, according to the fourth embodiment, the first antenna unit 20 is disposed on the outer wall surfaces (specifically, the outer wall surfaces 501 and 502) facing each other of the casing 500. The maximum gain direction GD1 of the dedicated antenna (one dedicated antenna) accommodated in the antenna accommodating unit 510 cannot be directed to the dedicated antenna (the other dedicated antenna) accommodated in the other antenna accommodating unit 510. Further, the maximum gain direction GD2 of the other dedicated antenna cannot be directed to the one dedicated antenna. Therefore, it is possible to suppress radio wave interference between 5 GHz bands High due to dedicated antennas housed in separate antenna housing portions 510.

  Further, according to the fourth embodiment, similarly to the third embodiment, the radio wave output of the first antenna unit 20 is the second antenna unit when the second radio communication unit 12 performs radio communication. It can be higher than 30 radio wave outputs. Moreover, since the wireless LAN communication apparatus 800 includes the direction changing unit 530, the maximum gain direction GD can be easily changed three-dimensionally.

E. Other Embodiments E-1. First Other Embodiment In the first embodiment, the wireless LAN communication device 100 employs an antenna having directivity and a high antenna gain as the dedicated antenna 21 and employs an omnidirectional antenna as the shared antenna 31. Yes. However, the dedicated antenna 21 and the shared antenna 31 are not limited to these. For example, the dedicated antenna 21 may be a high antenna gain omnidirectional antenna such as a high gain dipole antenna. The shared antenna 31 may be a directional antenna. Even in this case, similarly to the first embodiment, the radio wave output of the first antenna unit 20 can be higher than the radio wave output of the second antenna unit 30 when the second radio communication unit 12 performs radio communication. .

E-2. Second Second Embodiment In the first embodiment, the wireless LAN communication apparatus 100 increases the antenna gain of the dedicated antenna 21 so that the second wireless communication unit 12 outputs the radio wave output of the first antenna unit 20. The radio wave output of the second antenna unit 30 when performing wireless communication is set higher. However, the means for increasing the radio wave output of the first antenna unit 20 is not limited to this. For example, the wireless LAN communication device 100 increases the radio wave output of the first antenna unit 20 by increasing both the antenna gain of the first antenna unit 20 and the terminal input power from the first wireless communication unit 11. May be. Specifically, the antenna gain of the first antenna unit 20 is higher than the antenna gain of the second antenna unit 30, and the power amplified by the first power amplifier a1 is amplified by the second power amplifier a2. Make it higher than the power. Even in this case, similarly to the first embodiment, the radio wave output of the first antenna unit 20 can be higher than the radio wave output of the second antenna unit 30 when the second radio communication unit 12 performs radio communication. .

E-3. 3rd other embodiment In the said embodiment, the 1st radio | wireless communication part 11, the 2nd radio | wireless communication part 12, and the 3rd radio | wireless communication part 13 are performing the radio | wireless communication using channel bonding. However, it is not limited to this. Even when the first wireless communication unit 11, the second wireless communication unit 12, and the third wireless communication unit 13 do not perform wireless communication using channel bonding, The radio wave output of the first antenna unit 20 can be higher than the radio wave output of the second antenna unit 30 when the second radio communication unit 12 executes radio communication. Accordingly, wireless communication using the 5 GHz band High can be connected to a farther client device than wireless communication using the 5 GHz band Low.

E-4. 4th other embodiment In 3rd, 4th embodiment, although the 1st antenna part 20 was arrange | positioned in the side surface among the outer wall surfaces of the housing | casing 500, it is not limited to this. For example, the first antenna unit 20 may be disposed on the upper surface 504 of the outer wall of the housing 500. In this case, the changeable range of the maximum gain direction GD in the first antenna unit 20 is in a hemisphere with the upper surface 504 as the bottom surface. Even when the first antenna unit 20 is disposed on the upper surface 504, when a member having a long dimension such as a flexible arm is used as the direction changing unit 530, the first antenna unit 20 is located below the horizontal direction. The maximum gain direction GD of the antenna unit 20 can be directed. Further, the first antenna unit 20 may be arranged not at the outer wall surface of the housing 500 but at an angle at which a plurality of outer wall surfaces intersect. Even in this case, the connection with the client device using the first antenna unit 20 is easier than the wireless LAN communication device that cannot change the maximum gain direction GD.

E-5. Fifth Other Embodiments In the third and fourth embodiments, the wireless LAN communication devices 600 and 800 include both the direction changing unit 530 and the direction display unit 520, but the present invention is not limited to this. For example, the wireless LAN communication devices 600 and 800 may include only the direction display unit 520 without including the direction changing unit 530. In this case, the user can point the maximum gain directions GD, GD1, and GD2 indicated by the direction display unit 520 to the client device by changing the direction of the wireless LAN communication devices 600 and 800 as a whole. In this case, the direction display unit 520 may be one in which a mark such as an arrow is attached to the housing 500. In addition, the wireless LAN communication devices 600 and 800 may not include both the direction changing unit 530 and the direction display unit 520. In this case, the user may be able to grasp the maximum gain directions GD, GD1, GD2 according to the description in the instruction manual or the like. Further, the wireless LAN communication devices 600 and 800 may have a function of making it possible to recognize the maximum gain direction GD via, for example, a wired connection or a wireless connection device instead of the direction display unit 520.

E-6. Sixth Other Embodiments In the third and fourth embodiments, the direction changing unit 530 can change the maximum gain directions GD, GD1, and GD2 three-dimensionally, but is not limited thereto. For example, the direction changing unit 530 can change the maximum gain directions GD, GD1, and GD2 only in the vertical direction, and may not be able to change the maximum gain directions GD, GD1, and GD2 in the horizontal direction. For example, the direction changing unit 530 may be a hinge mechanism having only a rotation axis that can change the maximum gain directions GD, GD1, and GD2 along a plane parallel to the vertical direction. Even in this case, the maximum gain directions GD, GD1, and GD2 can be easily directed to the client device installed on a different floor from the wireless LAN communication device 600.

E-7. Seventh Other Embodiments In the third and fourth embodiments, the rotatable range of the direction changing unit 530 is a range of 0 ° or more and 270 ° or less at the first rotation angle θ1, and at the second rotation angle θ2. It is the range of 0 ° or more and 90 ° or less. However, the rotatable range of the direction changing unit 530 is not limited to this. For example, the first rotation angle θ1 may be an angle that can be changed within a narrower range or a wider range than 0 ° to 270 °. Further, for example, the second rotation angle θ2 may be an angle that can be changed in a range narrower than 0 ° or more and 90 ° or less, or may be an angle that can be changed in a range wider than 0 ° or more and 90 ° or less. Good. Even in these cases, since the first rotation axis dx1 and the second rotation axis dx2 are provided, the wireless LAN communication devices 600 and 800 can change the maximum gain directions GD, GD1, and GD2 three-dimensionally. is there.

E-8. Eighth Other Embodiments In the third and fourth embodiments, the wireless LAN communication devices 600 and 800 include the identification unit, but may not include the identification unit. For example, when both the first antenna unit 20 and the second antenna unit 30 are housed in the housing 500, there is no configuration that functions as an identification unit. In this case, for example, the wireless LAN communication apparatuses 600 and 800 may not include the direction changing unit 530 but may include the direction display unit 520 on the outer wall surface of the housing 500. Further, for example, the wireless LAN communication devices 600 and 800 replace the direction changing unit 530 and the direction display unit 520 with the maximum gain directions GD, GD1, and GD2 of the first antenna unit 20 via the system by the user. It may have a function that enables recognition and change. Further, even when both the first antenna unit 20 and the second antenna unit 30 are arranged outside the housing 500, the identification unit is not essential. For example, in the wireless LAN communication devices 600 and 800, only the first antenna unit 20 can change the maximum gain directions GD, GD1, and GD2 by the direction changing unit 530. In this case, even if the first antenna unit 20 cannot be identified, an erroneous operation by the user such as changing the direction of the second antenna unit 30 is suppressed.

E-9. Ninth Other Embodiments In the third and fourth embodiments, the wireless LAN communication devices 600 and 800 further include an antenna housing portion 510 caused by an impact when the antenna housing portion 510 and the arrangement outer wall surfaces 501 and 502 come into contact with each other. And you may have the protection part which suppresses the damage of arrangement | positioning outer wall surface 501,502. The protection part is a part of the outer surface of the antenna accommodating part 510, and is provided in a part where the possibility of contact with the arrangement outer wall surface 501 is higher than other parts of the outer surface of the antenna accommodating part 510. Yes. For the protection part, it is possible to use a cushioning material having a function of reducing impact and vibration and making it difficult to transmit to the protection target. The buffer material is, for example, rubber such as silicon rubber or foamed plastic such as foamed polyethylene. Specifically, for example, when the maximum gain direction GD, GD1, GD2 is directed in the direction along the arrangement outer wall surfaces 501, 502, the protection unit has the arrangement outer wall surfaces 501, 502 among the surfaces of the antenna accommodating part 510. It is preferable that it is provided at the part facing the surface and protrudes outward from the other part. In this case, when the maximum gain directions GD, GD1, and GD2 are directed in the direction along the arrangement outer wall surfaces 501, 502, the protection unit is more likely to contact the arrangement outer wall surfaces 501, 502 than the other parts. Thereby, since it can suppress that outer surfaces other than the part in which the protection part was provided among the antenna accommodating parts 510 collide with arrangement | positioning outer wall surfaces 501 and 502, damage to the antenna accommodating part 510 and arrangement | positioning outer wall surfaces 501 and 502 is possible. Can be suppressed. Note that the protection unit is not necessarily provided on the outer surface of the antenna housing unit 510. For example, the protection part may be provided on the arrangement outer wall surfaces 501 and 502.

E-10. 10th other embodiment In the said embodiment, although the wireless LAN communication apparatus 100,600,800 is a triband wireless LAN communication apparatus, it is not limited to this. The wireless LAN communication devices 100, 600, and 800 may be wireless LAN communication devices other than the tri-band wireless LAN communication device. A wireless LAN communication device other than the tri-band wireless LAN communication device is a wireless communication mainly used in addition to the three wireless communication units 11 to 13 or instead of at least one of the three wireless communication units 11 to 13. It is a wireless LAN communication apparatus provided with another wireless communication part as a part. Another wireless communication unit is, for example, a wireless communication unit that performs wireless communication using a different frequency band or a wireless communication unit that executes wireless communication based on a standard different from IEEE 802.11. The wireless communication using another frequency band is, for example, wireless communication using a sub-giga band or a 60 GHz band. The wireless communication based on a standard different from IEEE 802.11 is wireless communication using, for example, Bluetooth (registered trademark) or Zigbee (registered trademark).

E-11. Eleventh Other Embodiments In the third and fourth embodiments, the wireless LAN communication devices 600 and 800 are shown in a vertically installed state, but are not limited thereto. For example, the wireless LAN communication devices 600 and 800 may be configured to be capable of taking both a vertically used state and a horizontally used state. Further, the wireless LAN communication devices 600 and 800 may be configured to be able to take only the use state in the horizontal position. Even in these cases, since the first rotation axis dx1 and the second rotation axis dx2 are provided, the wireless LAN communication devices 600 and 800 can change the maximum gain directions GD, GD1, and GD2 three-dimensionally. is there.

  The present invention is not limited to the above-described embodiment, and can be realized with various configurations without departing from the spirit of the present invention. For example, the technical features in the embodiments corresponding to the technical features in each embodiment described in the summary section of the invention are intended to solve some or all of the above-described problems, or one of the above-described effects. In order to achieve a part or all, replacement or combination can be performed as appropriate. Further, if the technical feature is not described as essential in the present specification, it can be deleted as appropriate.

DESCRIPTION OF SYMBOLS 11 ... 1st wireless communication part 12 ... 2nd wireless communication part 13 ... 3rd wireless communication part 20, 420 ... 1st antenna part 21, 211, 212 ... Dedicated antenna 30, 430 ... 2nd antenna part 31, 311, 312 ... shared antenna 40 ... wired communication unit 50 ... baseband processor 60 ... storage unit 90 ... control unit 100, 400, 600, 800 ... wireless LAN communication device 200 ... network system 421, 431 ... antenna 500 ... casing Body 501, 502, 504, 505 ... Outer wall surface 510 ... Antenna housing part 520 ... Direction display part 530 ... Direction changing parts a1-a3, a11-a32 ... Power amplifiers be1, be2 ... Antenna beams c1, c2, c11-c22 ... Connector terminals dl, dl1, dl2 ... duplexer fr ... floors rf1 to rf3, rf11 to rf32 ... rf circuit IN ... Internet CL1~CL4 ... client device R1~R6 ... room W1~W5 ... wall WH ... housing

Claims (15)

A wireless LAN communication device comprising:
A first wireless communication unit that performs wireless communication using a frequency band of 5470-5725 MHz;
A second wireless communication unit that performs wireless communication using one of a frequency band of 5150-5250 MHz and a frequency band of 5250-5350 MHz;
A third wireless communication unit that performs wireless communication using a frequency band of 2401-2483 MHz;
A first antenna unit connected to the first wireless communication unit;
A second antenna unit connected to the second wireless communication unit and the third wireless communication unit,
The radio wave output of the first antenna unit defined by the equivalent isotropic radiant power in the 1 MHz bandwidth is the radio communication of the second radio communication unit defined by the equivalent isotropic radiant power in the 1 MHz bandwidth. Higher than the radio wave output of the second antenna unit when
Wireless LAN communication device. The wireless LAN communication device according to claim 1,
The wireless LAN communication apparatus, wherein an antenna gain of the first antenna unit is higher than an antenna gain of the second antenna unit. The wireless LAN communication device according to claim 2,
The wireless LAN communication apparatus, wherein the directivity of the first antenna unit is higher than the directivity of the second antenna unit. The wireless LAN communication device according to claim 3, further comprising:
A housing that houses the first wireless communication unit, the second wireless communication unit, and the third wireless communication unit;
A direction changing unit that has a rotation axis that changes the direction of the first antenna unit, and changes a maximum gain direction that is a direction in which an antenna gain of the antenna beam of the first antenna unit is maximized,
The first antenna unit is a wireless LAN communication device arranged on an outer wall surface of the casing. The wireless LAN communication device according to claim 4, further comprising:
A wireless LAN communication apparatus, comprising: an identification unit that is visible from the outside and that identifies the first antenna unit. The wireless LAN communication device according to claim 4 or 5, wherein
The wireless LAN communication apparatus, wherein the direction changing unit is capable of changing an angle formed between a horizontal direction and the maximum gain direction. The wireless LAN communication device according to claim 6,
The direction changing unit can change the maximum gain direction within a range including at least one of a range from a horizontal direction to a vertically upward direction and a range from a horizontal direction to a vertically downward direction. Communication device. The wireless LAN communication device according to claim 6 or 7,
The wireless LAN communication apparatus, wherein the direction changing unit is further capable of changing the maximum gain direction in a horizontal direction. The wireless LAN communication device according to any one of claims 4 to 8,
The wireless LAN communication device, wherein the outer wall surface is a side surface of the housing. The wireless LAN communication device according to any one of claims 4 to 9,
The second antenna unit is a wireless LAN communication device housed in the housing. The wireless LAN communication device according to any one of claims 3 to 10, further comprising:
A wireless LAN communication apparatus, comprising: a direction display unit that is visible from the outside and that indicates a maximum gain direction that is a direction in which an antenna gain of the antenna beam of the first antenna unit is maximized. The wireless LAN communication device according to any one of claims 1 to 11, further comprising:
A first power amplifier that amplifies power input from the first wireless communication unit to the first antenna unit;
A second power amplifier that amplifies power input from the second wireless communication unit to the second antenna unit;
The wireless LAN communication apparatus, wherein the power amplified by the first power amplifier is higher than the power amplified by the second power amplifier. The wireless LAN communication device according to any one of claims 1 to 12,
The first wireless communication unit is a wireless LAN communication device that performs the wireless communication using channel bonding that collectively uses a plurality of channels belonging to the frequency band of 5470-5725 MHz. The wireless LAN communication device according to claim 13,
The first wireless communication unit uses the channel bonding to execute the wireless communication using a wider bandwidth than the bandwidth used for the wireless communication executed by the third wireless communication unit. Wireless LAN communication device. The wireless LAN communication device according to any one of claims 1 to 14,
The first antenna unit has a plurality of antennas,
The first wireless communication unit is a wireless LAN communication device that performs the wireless communication of a MIMO scheme.

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