Complex base station and its housing

Abstract

To provide a composite base station that achieves transmission and reception of frequency bands allocated to a plurality of communication operators using one communication base station, and is multifunctional equipped with apparatuses other than the use of radio communication, and a housing used for the composite base station.SOLUTION: A composite base station 1A is a base station 1 that includes a housing 2 having a bottom wall 20, a perimeter side wall 21, and a top wall 22, an external antenna 3 provided outside the housing 2, and an electrical component group 4 housed inside the housing 2, and relays transmission and reception between a trunk network 50 and a wireless terminal 6, in which the external antenna 3 is a multi-antenna 30 capable of transmitting and receiving two or more frequency bands of mobile phones, disaster prevention radios, or TV broadcasts, or a group of antennas 31 consisting of two or more antennas capable of transmitting and receiving frequency bands of mobile phones, disaster prevention radios, or TV broadcasts, and the electrical component group 4 includes a transmitter / receiver 40 for radio wave signals and data signals and a power supply device 41.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a base station that is connected to an information and communication network and relays transmission and reception between a backbone network provided in the information and communication network and a wireless terminal, and a housing used for this base station. [Background technology]

[0002] In recent years, radio waves have become increasingly high-frequency in order to enable wireless terminals such as mobile phones to achieve high speeds, large volumes of data, and high image quality. However, high-frequency radio waves have a narrow communication range, and many communication base stations are required to build a seamless information and communication network. Currently, each communication carrier deploys communication base stations according to their own standards, which increases costs and places an increased burden on communication users. In addition, communication disparities are occurring depending on the region.

[0003] Mobile communications services are being put to practical use in industry, education, medical care, logistics, disaster prevention, and other areas, and are becoming an important part of social infrastructure, making them a highly public-spirited business.

[0004] Therefore, a communication method that supports in-device coexistence and interference avoidance has been proposed in the past.For example, Patent Document 1 (JP 2015-165689 A) proposes an implicit communication method that supports in-device coexistence and interference avoidance, including a step of setting conditions by a base station to a user equipment (UE) having an LTE radio module and a co-located ISM radio module, and the UE is prohibited from transmitting an in-device coexistence (IDC) interference indication that indicates a coexistence problem of a serving frequency and does not include a frequency index or a frequency allocation unless the set condition is satisfied.

[0005] Also, a user equipment (UE), a base station, and a method having a resource mapping processing circuit that enables coexistence of multiple radio access technologies (RATs) such as NR (New Radio) and LTE (Long Time Evolution) have been proposed. For example, in Patent Document 2 (JP 2022-8412 A), a shared channel remapping in a coexistence scenario of multiple radio access technologies is proposed, in which a user equipment (wireless device) in a system acquires a resource mapping instruction for a first RAT that enables coexistence with a second radio access technology (RAT) within at least a portion of a transmission band, and includes a processing circuit that determines communication resources based on the acquired resource mapping instruction. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2015-165689 A [Patent Document 2] Patent Publication No. 2022-8412 Summary of the Invention [Problem to be solved by the invention]

[0007] As described above, communication methods have been developed in the past that enable the shared use of communication base stations. However, in order to realize such new communication methods, it was necessary to enable each telecommunications carrier to communicate using multiple different standards, realize the shared use of communication base stations, and make it possible to make base stations more multifunctional by equipping them with various devices such as cameras and various sensors that may be desired in the future.

[0008] Therefore, the objective of the present invention is to provide a multi-functional composite base station that is equipped with antenna technology that enables transmission and reception of each of the frequency bands of each telecommunications carrier, enabling joint use by multiple telecommunications carriers, and that is equipped with devices other than for wireless communication purposes, such as cameras and sensors, for which demand is expected to increase in the future, as well as a housing for use therewith. [Means for solving the problem]

[0009] In order to solve the above problems, the present invention provides a composite base station having an interoperable basic structure. In other words, the present invention provides a base station which relays transmission and reception between a core network and a wireless terminal, the base station having a housing having a bottom wall, surrounding side walls and a top wall, an external antenna provided outside the housing, and a group of electrical components housed inside the housing, the external antenna being a multi-antenna capable of transmitting and receiving two or more frequency bands of mobile phones, disaster prevention radio or television broadcasting, or an antenna group consisting of two or more antennas capable of transmitting and receiving the frequency bands of mobile phones, disaster prevention radio or television broadcasting, and the group of electrical components having a transmitter / receiver for radio signals and data signals, and a power supply.

[0010] The present invention also provides a complex base station which has an antenna mounting section capable of mounting the multi-antenna or two or more antennas, the antenna mounting section having mounting structures for antennas of different shapes, and the interior of the housing has divided areas which house groups of electrical components corresponding to the frequency bands to be transmitted and received, the groups of electrical components provided in each area comprising an antenna control section which controls the transmission and reception of each frequency band, a radio noise filter which removes unnecessary radio noise, and a converter which converts radio signals into data signals and data signals into radio signals.

[0011] The present invention also provides a composite base station comprising at least one of a disaster prevention camera, an emergency power supply, an environmental sensor or a street light arranged outside a housing, and a transceiver that transmits a data signal from the disaster prevention camera or the environmental sensor to a backbone network.

[0012] The present invention also provides a housing for a complex base station, which comprises a zirconium chemical conversion layer provided on the outer walls of a bottom wall, surrounding side walls and a top wall, an anti-rust layer made of ultraviolet resistant paint provided on top of the zirconium chemical conversion layer, a ventilation opening provided in the upper part of the surrounding side wall located directly below the top wall, a humidity and temperature sensor provided inside the ventilation opening, and a forced ventilation device activated by the humidity and temperature sensor. Effect of the Invention

[0013] According to the present invention, whereas up until now each telecommunications carrier had to install its own base station, it has become possible for multiple telecommunications carriers to share the base station, thereby reducing the burden on telecommunications users and enabling it to be equipped with devices other than those for wireless communication, such as cameras and sensors, for which demand is expected to increase in the future. This provides a multi-functional composite base station and a housing for use therewith, thereby achieving low costs, energy savings, and a reduction in the financial burden on telecommunications carriers and telecommunications users. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a front cross-sectional view showing the internal and external structure of a housing of a composite base station having an antenna mounting portion on which multiple antennas can be installed (Example 1). [Diagram 2] FIG. 1 is a perspective view showing a composite base station having multiple antennas (embodiment 2); [Diagram 3] A perspective view showing a composite base station having a circular multi-structure antenna (Example 3) [Figure 4] Overall configuration diagram showing an information and communication network in which a backbone network and a composite base station are installed (Example 4) DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] Hereinafter, the composite base station 1 according to the present embodiment and the housing 2 used therein will be specifically described with reference to the drawings. In particular, the present embodiment shows an embodiment of the composite base station 1 installed outdoors, such as on the ground or on the roof or side wall of a building, but it is also possible to embody the composite base station as a steel tower, utility pole, sign, signboard, traffic light, tunnel, other outdoor facilities, or indoors or in underground facilities.

[0016] 1, a housing 2 consisting of a bottom wall 20, surrounding side walls 21, and a top wall 22 is installed on the ground. Outside the housing 2, an antenna group 31 serving as an external antenna 3 is erected on the top wall 22, and each antenna 3 of the antenna group 31 is made of a material, shape, and structure capable of transmitting and receiving one of the frequency bands of mobile phones, disaster prevention radio, or television broadcasts of one telecommunications company.

[0017] For example, the frequency bands currently used by mobile phone carriers are 700MHz or 4.6GHz, and the frequency bands used by prefectures and municipalities for mobile disaster prevention administrative radio were previously analog, using the 150MHz and 400MHz bands, but are currently being transitioned to the 260MHz digital band.Furthermore, the frequency bands used by television broadcasting are assigned as ultra-high frequency (UHF) for terrestrial digital broadcasting, centimeter wave (SHF) for broadcasting satellites (BS), 12.2GHz to 12.8GHz from the communication satellite N-SAT-110 for communication satellites (CS), and others.

[0018] More specifically, the antenna mounting portion 23 on the top wall 22 is provided with a plurality of mounting structures DA, DA, DA for antennas of different shapes, and various external antennas 3, 3, 3 that match the respective shapes of the mounting structures DA, DA, DA (having connecting parts with different shapes from each other) are detachably attached to each of the mounting structures DA, DA, DA, and the antennas are wired through the inside of each mounting structure DA, DA, DA.

[0019] Also, each mounting structure DA, DA, DA can be replaced with one to which external antennas 3, 3, 3 having a common connecting part shape are detachably attached. For example, as shown in Fig. 1, each mounting structure DA, DA, DA can be replaced with one to which an antenna pole part 32 having the same connecting part shape and structure is detachably connected, and a mounting bracket part for attaching various external antennas 3 in an exchangeable manner is provided at the tip of the antenna pole part 32, and various external antennas 3 corresponding to various frequency bands such as mobile phones, disaster prevention radio, television broadcasting, or Wi-Fi are exchangeable, and a plurality of external antennas 3, 3, 3 are provided to form an antenna group 31 as a whole.

[0020] In addition to the antenna pole 32, either a waterproof plug 24 or a waterproof cover is detachably attached to the mounting structure DA, DA, DA to ensure waterproofing when the antenna pole 32 is not installed. Furthermore, as shown in Fig. 1, at least one of a disaster prevention camera CM, an environmental sensor, a disaster prevention speaker, a public Wi-Fi transceiver, or a street light is installed on the outside of the peripheral side wall 21 or the top wall 22 of the housing 2.

[0021] Inside the housing 2, there are provided an upper area A40 and a lower area A41 which are partitioned to separately accommodate, for example, a transceiver 40 and a power supply unit 41 of the electrical component group 4 according to the frequency band to be transmitted and received, and the transceiver 40 which is grounded (GA) is disposed in the area A40, and inside the transceiver 40, an antenna control unit, a splitter, an amplifier, a radio noise filter and a converter are accommodated, and antenna wiring which is drawn from the external antennas 3, 3, 3 into the housing 2 is connected.

[0022] The area A40 can be partitioned to accommodate the electrical component group 4 corresponding to the frequency band for transmission and reception. For example, it can be partitioned into five areas corresponding to the standards (channels WT1 to WT5) of five mobile communication companies, and each area for each company that installs an external antenna 3 can accommodate the electrical component group 4 corresponding to the frequency band. In addition to the area for accommodating the electrical component group 4 for the wireless terminal 6 (WT1 to WT5), it can be provided with areas for accommodating the electrical component group 4 capable of transmitting and receiving the frequency bands of disaster prevention radio, television broadcasting, and other wireless communications (for example, radio broadcasting such as FM broadcasting and AM broadcasting). When the partitioned area A40 is partitioned by metal and sealed, an electromagnetic shielding effect can be expected for each area.

[0023] Furthermore, a power supply unit 41 is disposed in the lower area A41, and a main power supply unit MP and a power supply control unit such as a transformer and a distribution board that controls the power supply of the main power supply unit MP are disposed in the lower layer of the area A41, and are assumed to supply power to the transceiver 40. The main power supply unit MP can be a commercial power supply CP, an internal battery, or other externally supplied power source. An emergency power supply AP is disposed in the upper layer of the area A41, and is assumed to supply power when the power supply from the main power supply unit MP stops, and the emergency power supply AP can be a battery or a generator that is charged by the power supply from the main power supply unit MP.

[0024] The emergency power supply AP is designed to maintain each function, such as the transceiver 40, disaster prevention camera CM, environmental sensor, disaster prevention speaker, public Wi-Fi transceiver, or street light, for a certain period of time in the event that the power supply from the main power supply unit MP is lost due to a disaster or the like, making it possible to rescue victims and transmit information in an emergency.

[0025] The transceiver 40 is connected to the backbone network 50 via an optical communication cable 5 or a local communication base (not shown) as an information and communication network 5 connected to the backbone network 50, and is connected to the backbone network 50 managed by, for example, a telecommunications company that is the communications carrier for each mobile phone.

[0026] As shown in FIG. 2, the composite base station 1 of the present invention has one external antenna 3 erected on the top wall 22 of its housing 2, and the external antenna 3 is a single multi-antenna 30 capable of transmitting and receiving each frequency band of mobile phones, disaster prevention radio, or television broadcasting. In addition to serving as a 5G shared antenna base, the composite base station 1 also has an LCD display LD embedded in the upper front part of the surrounding side wall 21, a video control device installed in a spare area (not shown) separated from areas A40 and A41 in the housing 2, and a public Wi-Fi transceiver and an environmental sensor installed in the spare area in the housing 2, and the video control device controls the display of guidance information such as the access point (SSID) and password of the public Wi-Fi transceiver, real-time environmental information such as temperature, air pressure, humidity, earthquake intensity, evacuation information observed by the environmental sensor, and other information, such as external information received via an optical communication cable 5 or a local communication base.

[0027] In addition, the liquid crystal display LD can be configured to display images and text information from the optical communication cable 5, disaster prevention radio, or television broadcasting via the video control device, and the liquid crystal display LD can be replaced with a plasma display, an organic EL panel, a high-brightness monitor, a display with a touch panel function (a function that provides maps, information about surrounding facilities, traffic information, weather information, etc.), or other display device.

[0028] As shown in FIG. 3, the composite base station 1 of the present invention has an airtight structure that prevents water from entering from the bottom wall 20 of its housing 2 to the height of the liquid crystal display LD on the surrounding side wall 21 (the top of the surrounding side wall 21), thereby preventing water from entering even in the event of a flood FD caused by heavy rain or the like. Furthermore, a zirconium chemical conversion layer is provided on the outer walls of the bottom wall 20, surrounding side wall 21 and top wall 22, and an anti-rust layer made of ultraviolet resistant paint is laminated on top of the zirconium chemical conversion layer, thereby strengthening the anti-rust properties and improving durability and weather resistance.

[0029] In addition, a reserve area (not shown) may be set at any position within the range divided into the area A40 and the area A41 inside the housing 2, and an insect repellent device (not shown) may be provided in the reserve area. The insect repellent device may be provided with at least one of an insect repellent light that emits light in a frequency band that repels insects, an insect repellent sonic oscillator that emits sound waves in a frequency band that repels insects, and an insect repellent / repellent box that contains an insect repellent or an insect repellent. A louver-type ventilation opening AV may be provided at the upper part of the surrounding side wall 21 arranged directly below the top wall 22 of the housing 2, and an air shower insect / dust repellent device (neither shown) may be provided inside the ventilation opening AV, the air shower repellent / repellent device including a foreign object sensor that detects insects, dust, etc., and an air shower device that operates when the foreign object sensor detects insects, dust, etc.

[0030] Furthermore, one external antenna 3 is erected on the top wall 22, and the external antenna 3 has circular rings of the same diameter arranged at a distance above and below the tip of an antenna support section 32, and a double circular multi-fixing metal fitting 33 is connected and supported so as to be concentric with the antenna support section 32. Various antennas 34, 34, ... with different transmitting and receiving frequency bands (shapes and structures) are detachably attached around the double circular multi-fixing metal fitting 33 via brackets corresponding to each mounting section, allowing multiple communication carriers to install their own antennas and easily share them.

[0031] Moreover, an air conditioner AC can be provided inside a louver-type ventilation opening AV provided on the upper part of the surrounding side wall 21 arranged directly under the top wall 22 of the housing 2 in place of the air shower insect and dust prevention device. The air conditioner AC can be made up of a humidity and temperature sensor and a forced ventilation device that is activated by the humidity and temperature sensor to release the air inside the housing 2 to the outside and take in outside air into the housing 2, and further, a foreign object sensor can be incorporated in addition to the humidity and temperature sensor, so that the forced ventilation device also functions as an air shower device, and can serve as both an insect and dust prevention device and an air conditioner AC. The air conditioner AC has a highly weather-resistant and durable structure that prevents internal condensation and temperature rise while preventing the intrusion of small animals and the like with little power, and can provide a high-quality housing 2 that can maintain its infrastructure function at low cost.

[0032] As shown in Fig. 4, the composite base station 1 of the present invention is capable of relaying communications of the standards (channels WT1 to WT5) of five or more telecommunications companies, for example, the five telecommunications companies that are the carriers of each mobile phone, by itself. It can also be capable of relaying communications of the standards (channels) of six or more companies.

[0033] The complex base station 1 is connected to a backbone network 50 through an information and communication network 5 such as an optical communication cable 5, and is capable of simultaneous communication with a regional communication center RC, other backbone networks (not shown), other base stations, other complex base stations 1, and the Internet TN, cloud CD, etc., via the backbone network 50. The regional communication center RC is responsible for, for example, various regional data analysis, disaster prevention planning, evacuation instructions, environmental monitoring, and other functions.

[0034] Smartphones and other wireless terminals (channels 1 to 5) WT1 to WT5 of different standards for communication users of each of the five companies can communicate through the complex base station 1. The complex base station 1 can be equipped with public Wi-Fi (Wi-Fi router), environmental sensors (thermometer, hygrometer, barometer, rain gauge, anemometer, wind vane, seismometer), street lights (lamps), disaster prevention cameras (cameras), emergency warning loudspeakers (speakers), digital guide boards (displays), emergency power sources (batteries), and control devices for them.

[0035] The composite base station 1 is connected to an optical communication cable (information and communication network) 5 and a backbone network 50 via control devices for environmental sensors, street lights, disaster prevention cameras, emergency power supplies, etc., and data obtained from the environmental sensors and disaster prevention cameras is transmitted in real time to a regional communication center RC which manages the installed equipment such as the environmental sensors, street lights, disaster prevention cameras, and emergency power supplies. The regional communication center RC makes these various data available, thus providing the function of a highly public next-generation social infrastructure.

[0036] The housing 2 of the complex base station 1 can be freely shaped to suit the needs of users and the scenery of the streetscape without impairing the basic functions, and by making it a shape and size with excellent design and functionality, it is possible to realize the construction of smart city local communication. For example, the housing 2 can be a thin type that can be installed on the outer wall of a building, or a C-shaped type in plan view that can be installed around a utility pole, a traffic sign board, a traffic light pole, or a traffic light, or the complex base station 1 can be installed next to existing facilities where people gather, such as a vending machine, a bus stop, or a garbage collection station, and the communication area can be expanded while reducing costs without setting up a new installation site. More specifically, it can be a box-shaped type with a short upper-lower end dimension that can be installed on the ceiling of a vending machine, a bus stop, or a garbage collection station, or a type that replaces a signpost or display board for route information or timetables at stations and stops. [Industrial Applicability]

[0037] The composite base station according to the present invention and the housing used therein can be used in fields related to the shared use and multi-functioning of communication base stations. [Explanation of symbols]

[0038] 1 Complex base station 2. Chassis 20 Bottom wall 21 Same surrounding side wall LD LCD AV same ventilation hole 22 Same ceiling wall 23 Antenna mounting part DA Antenna mounting structure 24 Same waterproof plug A40 Upper Area (Division) A41 Lower Area (Division) 3 External Antennas 30 Multi-antenna 31 Antenna group 32 Antenna support part 33 Double circular multi-fixing bracket 34 Various antennas of different specifications CM Disaster prevention camera (or environmental sensor, street light, etc.) 4. Electrical components 40 Transmitter and receiver 41 Same power supply unit MP main power supply AP same emergency power supply AC air conditioner GA Same Ground Earth CP commercial power 5. Information and communication network (optical communication cable) 50 Backbone Network TN Same Internet CD Cloud RC Regional Communications Center 6 Wireless terminals (WT1, ~WT5) FD Flooding caused by heavy rain, etc.

Claims

1. a housing having a bottom wall, a peripheral side wall and a top wall; an external antenna provided outside the housing; A group of electrical components housed inside the housing; A base station that relays transmission and reception between a backbone network and a wireless terminal, The external antenna is a multi-antenna capable of transmitting and receiving two or more frequency bands of mobile phones, disaster prevention radio, or television broadcasting, or an antenna group consisting of two or more antennas capable of transmitting and receiving the frequency bands of mobile phones, disaster prevention radio, or television broadcasting, the electrical component group includes a transmitter / receiver for radio signals and data signals, and a power supply device; At least one of a disaster prevention camera, an environmental sensor, or a street light provided outside the housing; A complex base station characterized by comprising a transceiver provided inside a housing for transmitting data signals from the disaster prevention camera or the environmental sensor to a backbone network.

2. The present invention further includes an antenna mounting portion capable of mounting the multi-antenna or two or more antennas, the antenna mounting portion including mounting structures for antennas of different shapes; The housing has an interior provided with partitioned areas for accommodating electrical components corresponding to the frequency bands to be transmitted and received; The composite base station of claim 1, wherein the group of electrical components provided in each area comprises an antenna control unit that controls transmission and reception of each frequency band, a radio noise filter that removes unnecessary radio noise, and a converter that converts radio signals into data signals and data signals into radio signals.

3. A liquid crystal display is embedded in the upper front portion of the peripheral side wall of the housing, The inside of the housing is partitioned so as to accommodate the group of electrical components corresponding to the frequency bands to be transmitted and received, 2. The composite base station according to claim 1, wherein the power supply device provided inside the housing comprises a main power supply device and an emergency power supply device that supplies power when the power supply from the main power supply device stops.

4. A zirconium chemical conversion coating layer is provided on the outer walls of the bottom wall, the peripheral side wall, and the top wall; A rust-proof layer made of ultraviolet-resistant paint is provided on top of the zirconium chemical conversion coating layer; A ventilation opening provided in an upper portion of a peripheral side wall disposed directly below the top wall; an air conditioner including a humidity / temperature sensor provided inside the ventilation opening and a forced ventilation device activated by the humidity / temperature sensor; 4. The housing for a composite base station according to claim 1, further comprising:

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