BBU case

Abstract

The utility model relates to the technical field of communication, in particular to a BBU case. The BBU case is compact in structure and reasonable in equipment power distribution, cables are arranged respectively, power supply, the optical fiber distribution frame and the baseband unit are integrated in one cabinet body, and the BBU case is extremely low in cost, capable of achieving various communication functions, capable of being externally connected with cables and optical cables, small in occupied area and capable of saving installation space.

Description

Technical Field

[0001] The utility model relates to the technical field of communications, in particular to a BBU chassis. Background Art

[0002] BBU is the abbreviation of Baseband Unit, which is a key component in modern communication networks, especially in mobile communication base station architecture. The baseband unit converts the received wireless signal into a baseband signal (i.e., raw data without modulation) for processing, and encodes, encrypts, and modulates the data signal to be sent so that it can be sent out through the radio frequency unit (such as RRU).

[0003] In order to reduce costs and optimize network operation efficiency, the BBU is withdrawn to the integrated access room for centralized management. However, due to the large-scale construction of base stations, the BBU faces challenges such as insufficient room resources, high rental costs, slow service response, and insufficient backup power time when it is withdrawn to the integrated access room. How to effectively realize the withdrawal of the BBU to the integrated access room has become an urgent problem to be solved in the current communication network construction and operation. Utility Model Content

[0004] The embodiment of the utility model provides a BBU chassis to solve the problem in the prior art that the BBU cannot be effectively withdrawn due to insufficient room resources, high rental costs, slow service response, insufficient backup power time and other problems.

[0005] In a first aspect, the utility model provides a BBU chassis, including a cabinet, in which a baseband unit, a power supply module and an optical fiber distribution frame are arranged, the cabinet is provided with a cable inlet and a cable outlet, the input cable of the power supply module is led out through the cable inlet, the output cable of the power supply module is connected to the power input end of the baseband unit, and the output cable of the baseband unit is led out through the cable outlet for connecting to a radio frequency unit;

[0006] The cabinet is provided with an optical cable entrance and an optical cable exit. The external optical cable enters through the optical cable entrance and is connected to the optical fiber distribution frame. The optical fiber distribution frame is connected to the first optical fiber end of the baseband unit through the optical cable. The optical cable connected to the second optical fiber end of the baseband unit is led out through the optical cable exit for connecting to the radio frequency unit.

[0007] In one embodiment, a first bracket is provided on the inner walls on the left and right sides of the cabinet, and pull-out guide rails are fixed on both sides of the baseband unit. The pull-out guide rails are slidably assembled with the first bracket to enable the baseband unit to slide back and forth on the first bracket.

[0008] In one embodiment, a cooling fan is provided in the cabinet, and the cabinet is provided with a first air inlet and an air outlet, the first air inlet and the air outlet form a first cooling channel, and the first cooling channel is located at the main cooling surface of the baseband unit.

[0009] In one embodiment, at least one second air inlet is provided at the bottom of the cabinet, and the second air inlet is used to form a second heat dissipation channel with the air outlet, and the second heat dissipation channel is located at the main heat dissipation surface and / or auxiliary heat dissipation surface of the baseband unit.

[0010] In one embodiment, an air duct baffle is provided below the air outlet, and the air duct baffle is used to increase the length of the second heat dissipation channel.

[0011] In one embodiment, a fan guard is disposed on the outer side wall of the fan.

[0012] In one embodiment, a first fixing member is provided on the inner wall at the rear side of the cabinet, the power supply module and the optical fiber distribution frame are installed on the first fixing member, and a lightning protection module is also installed on the first fixing member.

[0013] In one embodiment, a pole mounting piece is provided on the back of the cabinet.

[0014] In one embodiment, a wall mounting member is provided on the back of the cabinet.

[0015] In one embodiment, an optical fiber fixing member is disposed in the cabinet.

[0016] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0017] The BBU chassis of the utility model has a compact structure, reasonable equipment power distribution, and separate cable management. It integrates power supply, optical fiber distribution frame, and baseband unit in one cabinet. The BBU box of this embodiment has extremely low cost, can realize multiple communication functions, can be externally connected to cables and optical cables, occupies a small area, and saves installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of a module connection structure of a BBU box provided by an embodiment of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of a BBU box provided by an embodiment of the utility model;

[0021] Figure 3 This is a front structural schematic diagram of a BBU box provided by an embodiment of the utility model;

[0022] Figure 4 This is a schematic diagram of the top structure of a BBU box provided by an embodiment of the utility model;

[0023] Figure 5 This is a schematic diagram of the bottom structure of a BBU box provided by an embodiment of the utility model;

[0024] Figure 6 This is a schematic diagram of the side structure of a BBU box provided by an embodiment of the utility model;

[0025] Among them, 1. BBU box internal module, 2. baseband unit, 3. power supply module, 4. lightning protection module, 5. radio frequency unit, 6. antenna, 7. fiber optic distribution frame, 8. first bracket, 9. pull-out guide rail, 10. first air inlet, 11. air outlet, 12. fan guard, 13. cooling fan, 14. air duct baffle, 15. optical fiber fixing part, 16. wall mounting part, 17. first fixing part, 18. anti-theft door lock, 19. cabinet door, 20. pole mounting part, 21. second air inlet, 22. optical cable inlet, 23. optical cable outlet, 24. cable inlet, 25. cable outlet. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0027] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0030] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0031] like Figure 1 As shown, a schematic diagram of the module connection structure of a BBU box is provided, such as Figure 2 As shown, a schematic diagram of the internal structure of a BBU box is provided, such as Figure 3 As shown, a front structural diagram of a BBU box is provided, such as Figure 4 As shown, a schematic diagram of the top structure of a BBU box is provided, such as Figure 5 As shown, a schematic diagram of the bottom structure of a BBU box is provided, such as Figure 2 As shown, a side structural schematic diagram of a BBU box is provided.

[0032] In one embodiment, if Figure 1 and Figure 2 As shown, the BBU chassis includes: a cabinet, in which a baseband unit 2, a power supply module 3 and a fiber distribution frame 7 are arranged, and the cabinet is provided with a cable inlet 24 and a cable outlet 25. The input cable of the power supply module 3 is led out through the cable inlet 24, and the output cable of the power supply module 3 is connected to the power input end of the baseband unit 2. The output cable of the baseband unit 2 is led out through the cable outlet 25 for connecting to the radio frequency unit 5;

[0033] The cabinet is provided with an optical cable entrance 22 and an optical cable exit 23. The external optical cable enters through the optical cable entrance 22 and is connected to the optical fiber distribution frame 7. The optical fiber distribution frame 7 is connected to the first optical fiber end of the baseband unit 2 through an optical cable. The optical cable connected to the second optical fiber end of the baseband unit 2 is led out through the optical cable exit 23 for connecting to the radio frequency unit 5.

[0034] BBU is the abbreviation of Baseband Unit 2, which is a key component in modern communication networks, especially in mobile communication base station architecture. The baseband unit 2 converts the received wireless signal into a baseband signal (i.e., unmodulated raw data) for processing, and encodes, encrypts, modulates and prepares the data signal to be sent so that it can be sent through the radio frequency unit 5 (such as RRU).

[0035] The power supply module 3 can be a battery, which is used to power the baseband unit 2. The power supply module 3 can also be an air switch, which controls the power supply signal input to the baseband unit 2. If the power supply module 3 is an air switch, the input cable of the air switch is connected to the minimalist power supply and / or battery module through the cable inlet 24, and the minimalist power supply and / or battery module is used to power the baseband unit 2. The output cable of the baseband unit 2 is led out through the cable outlet 25 to power the RF unit 5.

[0036] Preferably, a cabinet door 19 and an anti-theft door lock 18 are provided on the front of the cabinet.

[0037] It is understandable that the fiber optic distribution frame 7 is any type of fiber optic distribution frame 7. Preferably, the fiber optic distribution frame 7 is an integrated 24-core fiber optic distribution frame 7, which is convenient for connection with the computer room. The signal output from the computer room flows to the baseband unit 2 through the fiber optic distribution frame 7. The baseband unit 2 processes the signal and outputs it to the radio frequency unit 5, which is sent to the antenna 6 through the radio frequency unit 5. Further, the signal received by the antenna 6 is transmitted to the radio frequency unit 5, and the radio frequency unit 5 is transmitted to the baseband unit 2 through the optical cable, and the baseband unit 2 is transmitted to the computer room through the fiber optic distribution frame 7.

[0038] As another implementation manner, a PIN device may also be fixed at the position of the baseband unit 2 of the BBU chassis of this embodiment.

[0039] The BBU chassis of this embodiment has a compact structure, reasonable equipment power distribution, and separate cable management. It integrates power supply, optical fiber distribution frame 7, and baseband unit 2 in one cabinet. The BBU box of this embodiment has extremely low cost, can realize multiple communication functions, can be externally connected to electrical cables and optical cables, occupies a small area, and saves installation space.

[0040] In one embodiment, if Figure 2As shown, based on the above embodiment, a first bracket 8 is arranged on the inner walls on the left and right sides of the cabinet, and pull-out guide rails 9 are fixed on both sides of the baseband unit 2. The pull-out guide rails 9 are slidably assembled with the first bracket 8 to enable the baseband unit 2 to slide back and forth on the first bracket 8.

[0041] The first bracket 8 and the pull-out guide rail 9 form a pull-out bracket. The first bracket 8 can be fixed to the cabinet by screws, and the first bracket 8 can also be fixed to the cabinet by glue. The pull-out guide rail 9 can be set on the baseband unit 2 by screws, and the pull-out guide rail 9 can also be fixed to the baseband unit 2 by glue.

[0042] Preferably, the size of the BBU chassis of this embodiment is 700mm*650mm*280mm.

[0043] The BBU chassis of this embodiment uses the first bracket 8 and the pull-out guide rail 9 to fix the baseband unit 2, so that the baseband unit 2 can slide through the pull-out guide rail 9 and be moved out of the cabinet, which is convenient for maintenance and repair of the baseband unit 2.

[0044] In one embodiment, if Figure 2 and Figure 3 As shown, based on the above embodiment, a cooling fan 13 is provided in the cabinet, and the cabinet is provided with a first air inlet 10 and an air outlet 11. The first air inlet 10 and the air outlet 11 form a first heat dissipation channel, and the first heat dissipation channel is located on the main heat dissipation surface of the baseband unit 2.

[0045] Preferably, the first air inlet 10 is arranged on the left side of the cabinet, the air outlet 11 is arranged on the right side of the cabinet, and the cooling fan 13 is arranged at the position of the air outlet 11 on the inner wall of the cabinet. According to the actual application situation, one side of the baseband unit 2 can be set as the main heat dissipation surface of the baseband unit 2, so that the baseband unit 2 can better dissipate heat.

[0046] The BBU chassis of this embodiment is provided with a cooling fan 13 to dissipate heat for the baseband unit 2, and a first air inlet 10 and an air outlet 11 are provided to form a left-in and right-out cooling channel, which greatly protects the operating environment of the baseband unit 2 and prolongs the service life of the baseband unit 2.

[0047] In one embodiment, if Figure 2 and Figure 5 As shown, based on the above embodiment, at least one second air inlet 21 is provided at the bottom of the cabinet, and the second air inlet 21 is used to form a second heat dissipation channel with the air outlet 11, and the second heat dissipation channel is located on the main heat dissipation surface and / or auxiliary heat dissipation surface of the baseband unit 2.

[0048] The second air inlet 21 is arranged below the baseband unit 2, and the wind from the second air inlet 21 can flow directly to the air outlet 11 through the bottom of the baseband unit 2, forming a second heat dissipation channel to dissipate heat for the bottom of the baseband unit 2; the wind from the second air inlet 21 can also flow to the first air inlet 10 through the bottom of the baseband unit 2, and then flow to the air outlet 11 through the baseband unit 2. Therefore, the second heat dissipation channel can be located only to dissipate heat for the bottom of the baseband unit 2, and the second heat dissipation channel can also dissipate heat for the bottom and side of the baseband unit 2 at the same time.

[0049] The BBU chassis of this embodiment is provided with a second air inlet 21 at the bottom of the cabinet, so that two heat dissipation channels are formed in the cabinet, which further improves the heat dissipation of the baseband unit 2 and ensures the operating environment of the baseband unit 2.

[0050] In one embodiment, if Figure 2 As shown, on the basis of the above embodiment, an air duct baffle 14 is arranged below the air outlet 11, and the air duct baffle 14 is used to increase the length of the second heat dissipation channel.

[0051] The air duct baffle 14 can be made of any material. The air duct baffle 14 can be fixed by screws, the air duct flap can also be fixed by glue, and the air duct baffle 14 can also be integrally formed with the cabinet.

[0052] The BBU chassis of this embodiment is provided with an air duct baffle 14 below the air outlet 11, so that the wind from the second air inlet 21 cannot flow directly to the air outlet 11 through the gap between the baseband unit 2 and the air outlet 11, but needs to first flow to the first air inlet 10 through the bottom of the baseband unit 2, and then flow to the air outlet 11 through the baseband unit 2, thereby increasing the length of the second heat dissipation channel and further ensuring the operating environment of the baseband unit 2.

[0053] In one embodiment, if Figure 2 and Figure 6 As shown, based on the above embodiment, a fan guard 12 is provided on the outer side wall of the fan.

[0054] The fan guard 12 can be integrally formed with the cabinet, and the fan guard 12 is also fixed to the cabinet with screws. The fan guard 12 is used to protect the cooling fan 13 to prevent the cooling fan 13 from being interfered by debris and water, thereby ensuring the heat dissipation of the baseband unit 2.

[0055] In one embodiment, if Figure 2 As shown, based on the above embodiment, a first fixing member 17 is provided on the inner wall of the rear side of the cabinet, and the first fixing member 17 is installed with the power supply module 3 and the optical fiber distribution frame 7, and the first fixing member 17 is also installed with the lightning protection module 4.

[0056] Preferably, the lightning protection module 4 is a lightning arrester. It is understandable that the lightning protection module 4 is connected in parallel with the power supply module 3 to utilize the electrical signal output by the air switch to power the lightning arrester.

[0057] The BBU chassis of this embodiment is provided with a lightning protection module 4 to protect the cabinet, thereby preventing lightning from entering the cabinet through the cables and causing damage to the chassis.

[0058] In one embodiment, if Figure 4 As shown, based on the above embodiment, a pole mounting member 20 is provided on the back of the cabinet.

[0059] The specifications of the pole mounting member 20 can be set according to the specifications of the fixing rod in the actual application situation. Furthermore, the pole mounting members 20 are respectively arranged at the upper and lower ends of the back side of the cabinet, so that the force is evenly applied and the fixation is more reliable and firm.

[0060] The BBU chassis of this embodiment is provided with a pole mounting member 20 on the back of the cabinet, so that the BBU chassis can be pole mounted and the BBU chassis can be flexibly fixed, making the use of the BBU chassis more convenient.

[0061] In one embodiment, if Figure 3 As shown, based on the above embodiment, a wall mounting member 16 is provided on the back of the cabinet.

[0062] Preferably, the wall-mounted mounting member 16 is integrally formed with the cabinet, and the wall-mounted mounting member 16 is fixed by screws, so that the BBU chassis can be mounted on the wall.

[0063] The BBU chassis of this embodiment is further provided with a wall-mounting member 16 so that the BBU chassis can be mounted on a wall, thereby enriching the fixing methods of the BBU chassis and making it more convenient to use.

[0064] In one embodiment, if Figure 2 As shown, on the basis of the above embodiment, an optical fiber fixing member 15 is provided in the cabinet.

[0065] The optical fiber fixing member 15 can be a metal bracket with one or more holes in the middle position for managing optical cables. The cables are inserted into the holes for sorting and fixing.

[0066] The BBU chassis of this embodiment is provided with an optical fiber fixing member 15 to organize and fix the cables, thereby increasing the safety of the chassis, optimizing space utilization, and facilitating inspection and maintenance.

[0067] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A BBU chassis, characterized in that: The cabinet comprises a baseband unit, a power supply module and an optical fiber distribution frame, wherein the cabinet is provided with a cable inlet and a cable outlet, the input cable of the power supply module is led out through the cable inlet, the output cable of the power supply module is connected to the power input terminal of the baseband unit, and the output cable of the baseband unit is led out through the cable outlet for connecting to the radio frequency unit; The cabinet is provided with an optical cable entrance and an optical cable exit. The external optical cable enters through the optical cable entrance and is connected to the optical fiber distribution frame. The optical fiber distribution frame is connected to the first optical fiber end of the baseband unit through the optical cable. The optical cable connected to the second optical fiber end of the baseband unit is led out through the optical cable exit for connecting to the radio frequency unit.

2. The BBU chassis according to claim 1, characterized in that: First brackets are arranged on the inner walls on the left and right sides of the cabinet, and pull-out guide rails are fixed on both sides of the baseband unit. The pull-out guide rails are slidably assembled with the first brackets to enable the baseband unit to slide forward and backward on the first brackets.

3. The BBU chassis according to claim 1, characterized in that: A cooling fan is arranged in the cabinet, and the cabinet is provided with a first air inlet and an air outlet. The first air inlet and the air outlet form a first cooling channel, and the first cooling channel is located on the main cooling surface of the baseband unit.

4. The BBU chassis according to claim 3, characterized in that: At least one second air inlet is arranged at the bottom of the cabinet, and the second air inlet is used to form a second heat dissipation channel with the air outlet, and the second heat dissipation channel is located at the main heat dissipation surface and / or the auxiliary heat dissipation surface of the baseband unit.

5. The BBU chassis according to claim 4, characterized in that: An air duct baffle is arranged below the air outlet, and the air duct baffle is used to increase the length of the second heat dissipation channel.

6. The BBU chassis according to claim 5, characterized in that: The outer side wall of the fan is provided with a fan protective cover.

7. The BBU chassis according to claim 1, characterized in that: A first fixing member is arranged on the inner wall at the rear side of the cabinet, the power supply module and the optical fiber distribution frame are installed on the first fixing member, and a lightning protection module is also installed on the first fixing member.

8. The BBU chassis according to claim 1, characterized in that: A pole mounting piece is arranged on the back side of the cabinet.

9. The BBU chassis according to claim 8, characterized in that: A wall mounting piece is arranged on the back of the cabinet.

10. The BBU chassis according to claim 1, characterized in that: An optical fiber fixing piece is arranged in the cabinet.

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