Title of invention: Mounting structure for wireless communication device and communication device
Technical field
[0001]
　The disclosure of the present specification relates to a mounting structure of a communication device for a point-to-point wireless device.
Background technology
[0002]
　A point-to-point wireless system using microwaves or millimeter waves is known. In a point-to-point wireless system, two communication devices perform digital communication via a point-to-point wireless link. Specifically, each communication device is provided with a directional antenna for communicating with the opposite device by the point-to-point wireless technology, and directs a directional beam to the opposite device. This establishes a point-to-point wireless link between the two communication devices. In the present specification, each of the two communication devices that make up the point-to-point wireless system, that is, the communication device that communicates with the opposite device using the point-to-point wireless technology is referred to as a point-to-point wireless device.
[0003]
　The use of the point-to-point wireless system has advantages over the wired connection using the optical fiber in terms of ease of network construction, high economic efficiency, and relaxation of restrictions on the base station installation location. Point-to-point wireless systems are used, for example, in mobile backhaul. The mobile backhaul means a line for connecting the base station of the cellular communication system to the core network and a line for connecting the base stations.
[0004]
　Patent Documents 1 and 2 disclose point-to-point wireless devices. The point-to-point wireless device disclosed in Patent Document 1 includes an antenna and a front end device (Outdoor Unit (ODU)) installed outdoors, and a back end device (Indoor Unit (IDU)) installed indoors. The front end unit (ODU) is responsible for analog signal processing in the carrier frequency band (Radio frequency (RF) band), for example frequency up/down conversion and amplification. The back-end unit (IDU) is responsible for digital signal processing in the baseband, such as channel coding/decoding, interleaving/deinterleaving, and modulation/demodulation. The front end device can also be called an RF unit. The back-end device can also be called a baseband unit.
[0005]
　On the other hand, the point-to-point wireless device disclosed in Patent Document 2 has a configuration in which electronic devices for performing point-to-point wireless communication with an opposite device are arranged in one housing that can be installed outdoors. To have. More specifically, the point-to-point wireless device disclosed in Patent Document 2 has a structure in which a front-end electronic circuit module and a back-end electronic circuit module are arranged in one housing. Here, the front-end electronic circuit module includes a circuit that performs analog signal processing (for example, frequency conversion and signal amplification) in the RF band. The back-end electronic circuit module includes a circuit that performs digital signal processing (for example, channel coding and modulation/demodulation) in the baseband. The front end electronics module can also be called an RF circuit. The back-end electronics module can also be called a baseband circuit.
Prior art documents
Patent literature
[0006]
Patent Document 1: International Publication No. 2011/162281
Patent Document 2: International Publication No. 2013/118473
Summary of the invention
Problems to be Solved by the Invention
[0007]
　The point-to-point wireless device of the integrated configuration (All-in-one, integrated configuration) disclosed in Patent Document 2 requires, for example, a wiring work for connecting an RF unit and a baseband unit that are separately arranged. There is an advantage of not doing. However, an integrated point-to-point wireless device may have some inconveniences.
[0008]
　For example, front-end electronics modules (RF circuits) require different circuit components (eg, amplifiers) and different waveguide geometries depending on the carrier frequency used, transmit power, and the like. On the other hand, the back-end electronic circuit module (baseband circuit) can be easily shared regardless of the carrier frequency and the transmission output. Therefore, if the RF unit and the baseband unit are separated from each other, it is possible to easily change the carrier frequency and the transmission output by replacing only the RF unit without replacing the baseband unit. it can. Further, if the separated configuration is adopted, it is considered that the partial hardware upgrade of the RF unit or the baseband unit is easy, which can contribute to the reduction of the capital investment cost. Further, when the point-to-point wireless device fails, only the RF unit or the baseband unit can be replaced, which can be expected to reduce the holding cost.
[0009]
　On the other hand, from another point of view, the separated structure may have drawbacks compared to the one-piece structure. For example, it may be difficult to secure an installation space for each of the RF unit and the baseband unit. In addition, in the separated configuration, the wiring length of the intermediate frequency (IF) cable between the RF unit and the baseband unit may be longer than that in the integrated configuration. Increasing the wiring length may be unfavorable in relation to the failure rate.
[0010]
　Therefore, one of the objects to be achieved by the embodiments disclosed in the present specification is to provide a mounting structure of a communication device for a point-to-point wireless device that can contribute to suppressing the drawbacks of the above-described separated configuration. Is to provide. It should be noted that this goal is only one of the goals that the embodiments disclosed herein seek to achieve. Other objects or problems and novel features will become apparent from the description of the present specification or the accompanying drawings.
Means for solving the problem
[0011]
　In one embodiment, the mounting structure includes a mounting base, a baseband unit, and an RF unit. The baseband unit contains a first electronic circuit module that performs digital signal processing in the baseband band, and has a first housing that is dustproof and waterproof that can be installed outdoors. The RF unit has a second housing that accommodates a second electronic circuit module that performs analog signal processing in a carrier frequency band and is dust-proof and waterproof that can be installed outdoors. The mounting base is fixed to an antenna for communicating with an opposite device by a point-to-point wireless technique, or an antenna bracket that supports the antenna by being attached to a structure. The antenna has a front portion that radiates an electric field and a back portion that is located opposite to the front portion and has a waveguide flange that is coupled to the waveguide of the RF unit. The baseband unit is supported by the mounting base by fixing the first casing to the mounting base. The base band unit supported by the mounting base faces the back portion and is arranged to form a space between the back portion and the first housing. The RF unit is supported by the mounting base by fixing the second housing to the mounting base. The RF unit supported by the mounting base is disposed in the space and is coupled to the waveguide flange.
Effect of the invention
[0012]
　According to the above-described embodiment, it is possible to provide a mounting structure of a communication device for a point-to-point wireless device that can contribute to suppressing the drawbacks of the separated configuration. It should be noted that this effect is only one of the multiple effects expected to be brought about by the embodiments disclosed herein.
Brief description of the drawings
[0013]
FIG. 1 is a block diagram showing a configuration example of a point-to-point wireless device according to a first embodiment.
FIG. 2 is a diagram showing an external configuration example and an installation example of the point-to-point wireless device according to the first embodiment.
FIG. 3 is an exploded stereoscopic view of the point-to-point wireless device according to the first embodiment.
FIG. 4 is an exploded stereoscopic view of the point-to-point wireless device according to the first embodiment.
FIG. 5 is an exploded side view of the point-to-point wireless device according to the first embodiment.
FIG. 6 is a side view of the point-to-point wireless device according to the first embodiment.
FIG. 7 is a side view of the point-to-point wireless device according to the first embodiment.
FIG. 8 is a projection view showing a front surface, a right side surface, a back surface, and a top surface (planar surface) of the point-to-point wireless device according to the second embodiment.
FIG. 9 is a projection view showing a front surface, a right side surface, a back surface, and a top surface (planar surface) of a point-to-point wireless device according to a second embodiment.
FIG. 10 is a view showing a surface (rear surface) having a recessed area of ​​the baseband unit according to the second embodiment.
FIG. 11 is an exploded side view of the point-to-point wireless device according to the second embodiment.
MODE FOR CARRYING OUT THE INVENTION
[0014]
　Hereinafter, specific embodiments will be described in detail with reference to the drawings. In each drawing, the same or corresponding elements are denoted by the same reference numerals, and duplicated explanations are omitted as necessary for the sake of clarity.
[0015]

　FIG. 1 is a block diagram showing a configuration example of a point-to-point radio apparatus 1 according to the present embodiment. The point-to-point wireless device 1 adopts a separated configuration. That is, the point-to-point wireless device 1 includes a baseband unit 11 and an RF unit 12, each of which can be installed outdoors. As shown in FIG. 1, the baseband unit 11 includes a baseband processor 1111 that performs digital signal processing in the baseband band. The baseband unit 11 may include other electronic circuit modules, for example, a DA converter (DAC) 1112, an AD converter (ADC) 1113, and a controller 1114.
[0016]
　Regarding the transmission processing, the baseband processor 1111 performs transmission path coding (for example, Forward Error Correction (FEC) encoding) on ​​the transmission data, maps the encoded data string into transmission symbols, and band-passes the transmission symbol string with a low-pass filter. Limiting, which produces a transmit baseband signal. The DA converter 1112 converts the digital transmission baseband signal into an analog signal.
[0017]
　Also, regarding the reception processing, the AD converter 1113 converts the reception IF signal into a digital signal. Then, the baseband processor 1111 performs demodulation processing in the digital domain. That is, the baseband processor 1111 multiplies the digital reception IF signal by the digital sine wave signal and performs low-pass filter processing to generate a quadrature baseband signal. The baseband processor 1111 performs symbol determination (symbol demapping) on ​​the orthogonal baseband signal and generates a received data string. Further, the baseband processor 1111 performs error correction on the received data sequence according to the transmission path coding scheme (for example, FEC) performed by the opposite device.
[0018]
　The controller 1114 performs overall control of the point-to-point wireless device 1. For example, the controller 1114 adaptively adjusts the modulation scheme and the coding rate in the baseband processor 1111 based on the communication quality of the point-to-point wireless link.
[0019]
　Furthermore, the baseband unit 11 has a housing 111. The housing 111 has a dustproof property and a waterproof property that can be installed outdoors, and houses the electronic circuit module of the baseband unit 11 (that is, the baseband processor 1111, the DA converter 1112, the AD converter 1113, etc.) therein. .. The dustproof and waterproof performance of the housing 111 may be, for example, performance equivalent to IP66 in IEC 60529 defined by the International Electrotechnical Commission (IEC).
[0020]
　As shown in FIG. 1, the RF unit 12 includes TX-RF1211 and RX-RF1212 that perform analog signal processing in a carrier frequency band. The TX-RF1211 generates a modulated signal by mixing an analog transmission baseband signal supplied from the DA converter 1112 with a local oscillator signal, and raises the modulated signal to a carrier frequency (radio frequency (RF)). The signal is converted, the RF signal is amplified, and the amplified signal is sent to the antenna 13. The RX-RF 1212 amplifies the received RF signal received by the antenna 13 with a Low Noise Amplifier (LNA), and down-converts the received RF signal to an intermediate frequency (IF) band.
[0021]
　Note that FIG. 1 shows an example in which bidirectional communication is performed by Frequency Division Duplex (FDD), and a duplexer 1213 is used in the RF unit 12 to separate the transmission frequency band and the reception frequency band. However, the point-to-point wireless device 1 may perform bidirectional communication by Time Division Duplex (TDD). In the case of TDD, instead of the duplexer 1213, a high frequency switch may be used for switching between transmission and reception.
[0022]
　Further, the RF unit 12 has a housing 121. The housing 121 has dustproof and waterproof properties that can be installed outdoors, and accommodates the electronic circuit module of the RF unit 12 (that is, TX-RF1211, RX-RF1212, etc.) therein. The dustproof and waterproof performance of the housing 121 may be performance equivalent to IP66 in IEC 60529, for example.
[0023]
　Subsequently, an external configuration example and an installation example of the point-to-point wireless device 1 will be described below with reference to FIGS. 2 to 6. FIG. 2 is a diagram illustrating an external configuration example and an installation example of the point-to-point wireless device 1. 3 and 4 are exploded perspective views of the point-to-point wireless device 1. 5 and 6 are exploded side views of the point-to-point wireless device 1.
[0024]
　In the examples of FIGS. 2 to 6, the baseband unit 11 has the receptacles 112 and 113, the heat radiation fins 114, and the grip (handle) 117. The receptacles 112 and 113 are arranged on the bottom surface 111D of the housing 111. The radiation fin 114 is arranged on the front surface 111A of the housing 111. The grip 117 is arranged on the upper surface 111C of the housing 111, and is used to grip the housing 111. A communication cable between the baseband unit 11 and an external device (for example, a base station device, a router, a layer 2 switch, etc.) is connected to the receptacle 112. A communication cable (IF cable) between the baseband unit 11 and the RF unit 12 is connected to the receptacle 113. The receptacle 112 may be shared for supplying power to the baseband unit 11. This power supply may be performed by Power over Ethernet (PoE), for example.
[0025]
　In the examples of FIGS. 2 to 6, the housing 121 of the RF unit 12 is provided with the receptacle 122 and the waveguide flange 123. A communication cable (IF cable) between the baseband unit 11 and the RF unit 12 is connected to the receptacle 122. The waveguide flange 123 is coupled with the waveguide flange 133 of the antenna 13 for field emission.
[0026]
　In the examples of FIGS. 2 to 6, the antenna 13 has a front part 131 and a back part 132 that radiate an electric field. The front part 131 includes a surface that emits an electric field toward an opposite device for point-to-point communication. The back portion 132 is located opposite the front portion 131 and has a waveguide flange 133. The waveguide flange 133 is coupled to the waveguide (waveguide flange 123) of the RF unit 12. The antenna 13 is supported by the antenna bracket 15. The antenna bracket 15 is attached to the structure 50 (for example, a lamppost, a building wall surface, an antenna tower, or the like).
[0027]
　In the examples of FIGS. 2 to 6, the mounting base 14 is used to mount the baseband unit 11 and the RF unit 12 to the antenna 13 or the antenna bracket 15. The mounting base 14 is fixed to the antenna 13 or the antenna bracket 15. In the examples of FIGS. 2 to 6, the mounting base 14 is fixed to the back portion 132 of the antenna 13.
[0028]
　The baseband unit 11 is supported by the mounting base 14 by fixing its housing 111 to the mounting base 14. Similarly, the RF unit 12 is supported by the mounting base 14 by fixing its housing 121 to the mounting base 14. Here, the baseband unit 11 supported by the mounting base 14 is arranged so as to face the back portion 132 of the antenna 13 and form a space between the back portion 132 and the housing 111 (baseband unit 11). .. The RF unit 12 supported by the mounting base 14 is arranged in the space between the back portion 132 and the housing 111 (base band unit 11). Further, in the RF unit 12 supported by the mounting base 14, its waveguide flange 123 is coupled to the waveguide flange 133 of the antenna 13.
[0029]
　2 to 6, the mounting base 14 includes a mounting plate 141, an upper stay member 142, and a lower stay member 143 in order to form a space for disposing the RF unit 12. The mounting plate 141 has a flat surface on which the RF unit 12 is arranged, and an opening 144 is formed on the surface. The opening 144 is used to connect the waveguide flange 133 of the antenna 13 and the waveguide flange 123 of the RF unit 12 through the mounting plate 141. The upper stay member 142 and the lower stay member 143 stand up from the mounting plate 141 and are used to support the baseband unit 11.
[0030]
　As can be understood from the above description, the point-to-point wireless device 1 adopts the separated configuration, and the baseband unit 11 and the RF unit 12 have separate housings 111 and 112. However, if the baseband unit 11 and the RF unit 12 are arranged apart from each other, the problem of the installation space or the problem of the wiring length of the IF cable as described above may occur. Therefore, in this embodiment, as shown in FIGS. 2 to 6, both the baseband unit 11 and the RF unit 12 are arranged in proximity to the back portion 132 of the antenna 13. Therefore, it is possible to suppress the drawbacks of the separated configuration (that is, the problem of the installation space or the problem of the wiring length of the IF cable).
[0031]
　Subsequently, some further improvements adopted in the present embodiment will be described below. In one refinement, as shown in FIGS. 5 and 6, the back surface 111B of the housing 111 of the baseband unit 11 may have a recessed region 115 formed in the central portion thereof. The rear surface 111B is located opposite to the front surface 111A and is a surface facing the back portion 132 of the antenna 13 when the housing 111 is supported by the mounting base. The recessed area 115 is recessed toward the inside of the housing 111. At least a part of the housing 121 of the RF unit 12 is a housing when the baseband unit 11 and the RF unit 12 are supported by the mounting base 14 as shown in FIG. 6 (side view). It may be arranged in the recessed region 115 in a side view of 111.
[0032]
　In the separated configuration, it is necessary to house the baseband unit 11 and the RF unit 12 in separate housings 111 and 121, respectively. Therefore, in general, the total volume or installation space of the point-to-point wireless device 1 in the separated configuration may be larger than that in the integrated configuration. However, the baseband unit 11 and the RF unit 12 are installed by the structure shown in FIGS. 5 and 6 (that is, the structure in which at least a part of the housing 121 is disposed in the recessed area 115 in a side view). It is possible to suppress the thickness of the device when it is turned on (overhang from the back portion 132 of the antenna 13), and thus to suppress the volume of the point-to-point wireless device 1 when it is installed.
[0033]
　Further, in another improvement, as shown in FIGS. 2 and 5, the base band unit 11 may be provided with a grip (handle) 117. By providing the grip 117 on the baseband unit 11, the baseband unit 11 can be easily and safely removed to replace the RF unit 12 when the carrier frequency or the transmission output of the RF unit 12 is changed. 12 can be exchanged. Since the point-to-point wireless device 1 is often installed in a high antenna tower, it is extremely important that the RF unit 12 can be replaced safely and easily in maintenance work at such a high place. In particular, since the baseband unit 11 is larger in size and weight than the RF unit 12, the grip 117 provided on the baseband unit 11 can suppress the disadvantage of the separated structure.
[0034]
　In the improvement described above, the RF unit 12 supported by the mounting base 14 may be allowed to take the first position shown in FIG. 6 and the second position shown in FIG. .. The second posture shown in FIG. 7 is rotated 90 degrees from the first posture around the rotation axis R passing through the waveguide flanges 123 and 133. By changing from the first posture to the second posture, the inclination of the polarization plane (linear polarization) of the electric field emitted from the antenna 13 can be easily changed. For example, the first attitude corresponds to vertical polarization and the second attitude corresponds to horizontal polarization. The shape of the recessed area 115 of the baseband unit 11 does not interfere with the housing 121 of the RF unit 12 regardless of whether the RF unit 12 is in the first posture (FIG. 6) or the second posture (FIG. 7). Should be defined as As a result, the attitude of the RF unit 12 arranged in the space between the baseband unit 11 and the antenna 13 can be physically rotated while the attitude of the baseband unit 11 is fixed, and therefore the point-to-point wireless device. The polarization of 1 can be easily changed.
[0035]
　In the above improvement, as shown in FIGS. 5 and 6, at least one of the receptacles 112 and 113 may be disposed on the bottom surface 111D of the housing 111. The back surface 111B of the housing 111 has a region 116 located around the recessed region 115. In the side view of the housing 111 shown in FIGS. 5 and 6, the thickness (D2) between the region 116 and the front surface 111A is thicker than the thickness (D1) between the recessed region 115 and the front surface 111A. Therefore, disposing the receptacle 112 or 113, or both of them on the bottom surface 111D that is continuous with the peripheral region 116 contributes to increasing the depth of the recessed region 115. This is because the thickness (D1) of the housing 111 in the recessed region 116 can be reduced without being restricted by the shapes of the receptacle 112 or 113 or both of them.
[0036]
Second Embodiment In
　this embodiment, a modification of the external configuration of the point-to-point wireless device 1 will be described with reference to FIGS. 8 to 11. For ease of comparison, the devices, elements, and members shown in FIGS. 8-11 are numbered the same as the corresponding devices, elements, and members shown in FIGS. 1-7. .. 8 and 9 are projection views showing a front view (A), a right side view (B), a rear view (C), and a plan view (D) of the point-to-point wireless device 1. It should be noted that FIG. 8 does not show the antenna 13, and shows the positional relationship between the baseband unit 11, the RF unit 12, and the mounting base 14 when the point-to-point wireless device 1 is installed. In FIG. 9, the mounting base 14 and the grip 117 are further omitted in comparison with FIG. 8, and the positional relationship between the base band unit 11 and the RF unit 12 is shown. FIG. 10 is a rear view of the baseband unit 11, and shows a detailed structure of the rear surface 111B of the housing 111. FIG. 11 is an exploded side view of the baseband unit 11, the RF unit 12, and the mounting base 14.
[0037]
　The basic features of the configuration examples of FIGS. 8 to 11 are the same as those of the configuration examples shown in FIGS. 2 to 7. That is, the RF unit 12 is arranged in the space formed when the baseband unit 11 is attached to the attachment base 14 (that is, the space between the back surface 111B of the housing 111 and the attachment plate 141). That is, both the baseband unit 11 and the RF unit 12 are arranged close to the back portion 132 of the antenna 13. Therefore, the drawbacks of the separated configuration (that is, the problem of installation space and the problem of wiring length of the IF cable) can be suppressed.
[0038]
　The back surface 111B of the housing 111 may also have a recessed area 115, as clearly shown in FIGS. At least a part of the housing 121 of the RF unit 12 is a side surface of the housing 111 when the baseband unit 11 and the RF unit 12 are supported by the mounting base 14, as clearly shown in FIGS. 9 and 11. It may be arranged in the recessed region 115 when viewed. Accordingly, the thickness of the device when the baseband unit 11 and the RF unit 12 are installed can be suppressed, and thus the volume of the point-to-point wireless device 1 when installed can be suppressed.
[0039]
　Further, as clearly shown in FIG. 10, the shape of the recessed region 115 of the baseband unit 11 is such that the RF unit 12 has the first posture (for vertical polarization) and the second posture (for horizontal polarization). In any case, it may be defined so as not to interfere with the housing 121 of the RF unit 12. Thereby, the attitude of the RF unit 12 can be physically rotated while the attitude of the baseband unit 11 is fixed, and thus the polarization of the point-to-point wireless device 1 can be easily changed.
[0040]
　Also, as clearly shown in FIGS. 8-11, the receptacle 112 or 113, or both, may be disposed on a bottom surface 111D that is continuous with the peripheral region 116. Thereby, the thickness (D1) of the housing 111 in the recessed region 116 can be reduced without being restricted by the shapes of the receptacle 112 or 113 or both of them. Therefore, it can contribute to increasing the depth of the recessed region 115.
[0041]
　In the configuration examples of FIGS. 8 to 11, the arrangement of the radiation fins 114 is changed as compared with the configuration examples shown in FIGS. 2 to 7. Specifically, the radiating fins 114 are arranged on the back surface 111B of the housing 111 instead of the front surface 111A. As clearly shown in FIGS. 9 and 10, the radiation fin 114 is provided at least in the region 118. The area 118 is an area of ​​the back surface 111B of the housing 111, which is located between the recessed area 115 and the upper surface 111C of the housing 111. Such arrangement of the heat dissipation fins 114 can contribute not only to improving the appearance of the point-to-point wireless device 1 but also to reducing the volume of the point-to-point wireless device 1 at the time of installation.
[0042]
　Further, in the configuration examples of FIGS. 8 to 11, the arrangement of the grip 117 is changed as compared with the configuration examples shown in FIGS. 2 to 7. Specifically, the grip 117 is provided on the back surface 116 of the housing 111, and is arranged so that the grip 117 cannot be seen in a front view of the housing 111. Such an arrangement of the grip 117 can contribute not only to improving the aesthetics of the point-to-point wireless device 1, but also to reducing the volume of the point-to-point wireless device 1 at the time of installation.
[0043]
　Furthermore, the above-described embodiment is merely an example regarding application of the technical idea obtained by the present inventor. That is, the technical idea is not limited to the above-described embodiment, and it goes without saying that various modifications can be made.
[0044]
　This application claims the priority on the basis of Japanese application Japanese Patent Application No. 2014-028298 for which it applied on February 18, 2014, and takes in those the indications of all here.
Explanation of symbols
[0045]
1 point-to-point wireless device
11 baseband unit
12 RF unit
13 antenna
14 mounting base
15 antenna bracket
50 structure
111 housing
111A front surface
111B rear surface
111C top surface
111D bottom surface
112 receptacle
113 receptacle
114 heat radiation fin
115 recessed area
117 grip (handle)
121 Housing
122 Receptacle
123 Waveguide Flange
131 Front Part
132 Back Part
133 Waveguide Flange
141 Mounting Plate
142 Upper Stay Member
143 Lower Stay Member
144 Opening
116 Grip
1111 Baseband Processor
1112 DA converter
1113 AD converter
1114 Controller
1211 TX-RF
1212 RX-RF
1213 Duplexer
The scope of the claims
[Claim 1]
　A baseband unit having a mounting base, a
　first housing for accommodating a first electronic circuit module that performs digital signal processing in a baseband band, and having a dustproof and waterproof property that can be installed outdoors, and a
　carrier frequency , a Radio frequency (RF) unit with a second housing having a second accommodating the electronic circuit module and an outdoor locatable dust resistance and a waterproof property of performing analog signal processing in the band
provided with,
　the mounting The base is fixed to an antenna for communicating with an opposite device by a point-to-point wireless technology, or an antenna bracket that supports the antenna, the
　antenna being positioned opposite a front part that radiates an electric field and the front part. And a back portion having a waveguide flange coupled to the waveguide of the RF unit,
　wherein the baseband unit is supported on the mounting base by fixing the first housing to the mounting base. And the
　baseband unit supported by the mounting base is arranged so as to face the back portion and form a space between the back portion and the first housing, and the
　RF unit includes Two housings are supported by the mounting base by being fixed to the
　mounting base, and the RF unit supported by the mounting base is disposed in the space and is coupled to the waveguide flange.
Communication device mounting structure.
[Claim 2]
　The first housing has a first surface facing the back portion when supported by the mounting base, a second surface opposite to the first surface, the first surface, and the first surface. A plurality of side surfaces that connect a second surface,
　the first surface has a recessed region formed in a central portion thereof
　, and at least a portion of the second housing includes the baseband unit and the
The mounting structure for a communication device according to claim 1, wherein when the RF unit is supported by the mounting base, the RF unit is arranged in the recessed region in a side view of the first housing .
[Claim 3]
　The RF unit supported by the mounting base may have a first position or a second position rotated 90 degrees from the first position about a rotation axis passing through the waveguide flange. ,
　the shape of the recessed area, be either the RF unit of the first posture and the second posture, it is defined so as not to interfere with the second casing,
according to claim 2 Installation structure of communication equipment.
[Claim 4]
　The plurality of side surfaces include an upper surface located vertically above when the mounting base is mounted on the antenna or the antenna bracket, and
　the first surface is located between the upper surface and the recessed area.
The mounting structure for a communication device according to claim 2 or 3 , further comprising: a first region in which a radiation fin is formed .
[Claim 5]
　The plurality of side surfaces include a bottom surface located vertically downward when the mounting base is mounted on the antenna or the antenna bracket, and
　the first surface is located between the recessed area and the bottom surface. In
　a side view of the first housing, the thickness between the second region and the second surface is greater than the thickness between the recessed region and the second surface in a side view of the first housing. thick Te,
　the bottom surface has a second communication cable receptacle for connecting a first electrical cable receptacle for connecting to an external apparatus, and between the RF unit and the baseband unit,
claims The communication device mounting structure according to any one of 2 to 4.
[Claim 6]
　A baseband unit that accommodates a first electronic circuit module that performs digital signal processing in a baseband band, has dustproofness and waterproofness that can be installed outdoors, and further includes a first casing that has a handle;
　Dustproof and waterproof, which is connected to the baseband unit with a communication cable for transmitting and receiving signals in the intermediate frequency band, accommodates a second electronic circuit module that performs analog signal processing in the carrier frequency band, and can be installed outdoors A Radio frequency (RF) unit including a second housing having a property,
　and supporting the second housing and the first housing attached so as to cover the second housing, A
wireless communication device for wirelessly communicating with a counter device by a point-to-point wireless technology, further comprising: a mounting base for fixing the first and second casings to a structure .