WO2016082427A1

WO2016082427A1 - Base band unit backplate, base band unit and distributed base station

Info

Publication number: WO2016082427A1
Application number: PCT/CN2015/076523
Authority: WO
Inventors: 王中
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-11-25
Filing date: 2015-04-14
Publication date: 2016-06-02
Also published as: CN204316756U

Abstract

Disclosed is a base band unit (BBU) backplate. The BBU backplate comprises a power supply module connector, a control module connector, a switching module connector, a base band module connector, a fan module connector, a printed board, a power supply signal line, a low-speed signal line, a control signal line and a high-speed signal line, wherein the power supply signal line, the low-speed signal line and the control signal line are used for connecting the power supply module connector, the control module connector, the switching module connector, the base band module connector and the fan module connector, and the high-speed signal line is used for connecting the control module connector, the switching module connector and the base band module connector; and at least one signal line among the power supply signal line, the low-speed signal line, the high-speed signal line and the control signal line is not printed on the printed board, and at least one signal line among the remaining signal lines is printed on the printed board. Also disclosed are a base band unit and a distributed base station. The utility model achieves the aim of shortening a design cycle of a BBU backplate by simplifying circuits of a printed board.

Description

Baseband unit backplane, baseband unit, and distributed base station

Technical field

The utility model relates to a baseband unit (BBU) backboard, a baseband unit and a distributed base station.

Background technique

Currently used BBU backplane, high-speed signals are transmitted through the backplane. With the development of communication technologies, such as the extension of Long Term Evolution (LTE) base stations, the signal rate is getting higher and higher, taking the serial high-speed input/output (SRIO, Serial Rapid I/O) rate as an example, which has been 3.125 megabits ( Gbps), 6Gbps up to 10Gbps. With the development of technology, the backplane has more and more complicated wiring, which makes the design difficulty gradually increase. Correspondingly, the design cycle of the BBU backplane is increasing. In response to this situation, printed circuit board manufacturers have proposed back-drilling, blind buried holes and other technical methods to mitigate the SI (signal integrity) problem of high-speed signal transmission, thereby reducing the difficulty of backplane design, but these solutions have brought Manufacturing time and cost increase, so there is a problem that the design cycle of the BBU backplane is increasing.

Summary of the invention

Embodiments of the present invention provide a BBU backplane, a baseband unit, and a distributed base station that can shorten a design cycle.

The utility model provides a BBU backplane, which comprises a power module connector, a control module connector, a switch module connector, a baseband module connector, a fan module connector, and a printed board for connecting the power source. Module connector, control module connector, switch module connector, baseband module connector, power signal line of the fan module connector, low-speed signal line and control signal line, and for connecting the control module connector and the switch module connection And baseband module connection High-speed signal line

The power module connector, the control module connector, the switch module connector, the baseband module connector, and the fan module connector are all fixedly connected to the printed board;

At least one of the power signal line, the low speed signal line, the high speed signal line, and the control signal line is not printed on the printed board, and at least one other is printed on the printed board.

Preferably, the high speed signal line is externally disposed with respect to the printed board;

The external high speed signal line is used to connect between the control module connector, the switch module connector, and the baseband module connector.

Preferably, the high speed signal line is a high speed flat cable.

Preferably, the low speed signal line is externally disposed with respect to the printed board;

The external low speed signal line is used to connect the power module connector, the control module connector, the switch module connector, the baseband module connector, and the fan module connector.

Preferably, the control signal line is externally disposed with respect to the printed board;

The external control signal line is used to connect the power module connector, the control module connector, the switch module connector, the baseband module connector, and the fan module connector.

Preferably, the power signal line is externally disposed with respect to the printed board;

The external power signal line is used to connect the control module connector, the power module connector, the switch module connector, the baseband module connector, and the fan module connector.

The utility model further provides a baseband unit BBU.

A baseband unit BBU, including a BBU backplane, and a power module, a fan module, a control module, a baseband module, and a switch module;

The power module is fixedly connected to the power module connector;

The fan module is fixedly connected to the fan module connector;

The control module is fixedly connected to the control module connector;

The baseband module is fixedly connected to the baseband module connector;

The switch module is fixedly connected to the switch module connector;

The BBU backplane includes: a power module connector, a control module connector, a switch module connector, a baseband module connector, a fan module connector, and a printed board for connecting the power module connector and the control module connector. , a switch module connector, a baseband module connector, a power signal line of a fan module connector, a low speed signal line and a control signal line, and a high speed for connecting the control module connector, the switch module connector, and the baseband module connector Signal line

Preferably, the power module connector is a power module socket; the fan module connector is a fan module socket; the control module connector is a control module socket; the baseband module connector is a baseband module socket; the exchange The module connector is a switch module socket.

The utility model further provides a distributed base station.

A distributed base station includes a baseband unit, the baseband unit including:

The BBU backplane includes a power module, a fan module, a control module, a baseband module, and a switch module.

The power module is fixedly connected to the power module connector;

The fan module is fixedly connected to the fan module connector;

The control module is fixedly connected to the control module connector;

The baseband module is fixedly connected to the baseband module connector;

The switch module is fixedly connected to the switch module connector;

The BBU backplane includes: a power module connector, a control module connector, a switch module connector, a baseband module connector, a fan module connector, and a printed board for connecting the power module connector and the control module connector. , switch module connector, baseband module connector, fan module a power signal line, a low speed signal line, and a control signal line of the block connector, and a high speed signal line for connecting the control module connector, the switch module connector, and the baseband module connector;

The utility model separates one or more of the power signal line, the low-speed signal line, the high-speed signal line and the control signal line from the printed board, in particular, by the most complicated high-speed signal line from the BBU backplane Separating the BBU backplane makes the BBU backplane design simple, so that the BBU backplane does not design high-speed signal lines. Only the power signal lines and control signal lines are placed on the BBU backplane. Low-speed signal lines, technical difficulty is greatly reduced, regardless of design and electronic design automation (EDA, Electronic Design Automation) can be easily achieved, speeding up the design of the BBU backplane, effectively shortening the design cycle; by printing high-speed signal lines The board is independent, which reduces the risk of signal loss during high-speed signal transmission; by separating the high-speed signal line from the printed board, the high-speed signal line does not need to pass through the pad outlet, via, and connector pad winding. The position of the AC coupling capacitor prevents the high-speed signal line from being caused by the discontinuity of the impedance when passing through the above position. The reflection of the number causes the deterioration of the signal quality; the BBU backplane without the high-speed signal line is only a common printed board, and does not need to consider complicated factors such as impedance control, so that the manufacturing process is simplified, thereby making manufacturing time and manufacturing cost. It has been greatly reduced, which in turn is beneficial to the rapid development of the BBU backplane and BBU.

DRAWINGS

1 is a schematic structural view of a functional module of a BBU backplane of the present invention;

2 is a schematic structural view of a functional module of another embodiment of the BBU backplane of the present invention.

detailed description

It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The utility model provides a BBU backboard 1.

In the embodiment of the present invention, one or more of the high-speed signal line 90, the low-speed signal line 80, the power signal line 70, and the control signal line 100 in the BBU backplane 1 are separated from the BBU backplane 1 to simplify The signal line on the printed board 10 of the BBU backplane 1 greatly simplifies the design of the BBU backplane 1 and shortens the design cycle of the BBU backplane 1. Wherein, the high-speed signal line 90 is separated from the BBU backplane 1 and is no longer formed on the printed board 10 by printing. Instead, an additional high-speed flat cable is set as the high-speed signal line 90 to exchange information at a high speed. Between the two ports, the design of the BBU backplane 1 is greatly simplified, and the design cycle of the BBU backplane 1 is shortened. At the same time, the high-speed signal line 90 is no longer disposed on the BBU backplane 1. The manufacturing of the BBU backplane 1 eliminates the need to consider factors such as impedance control, thereby effectively reducing the cost and production time of the BBU backplane 1.

In the embodiment of the present invention, referring to FIG. 1, the BBU backplane 1 includes a power module connector 20, a control module connector 30, a switch module connector 40, a baseband module connector 50, a fan module connector 60, and a printed circuit module. The board 10 is configured to connect the power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, the power signal line 70 of the fan module connector 60, the low speed signal line 80, and the control signal line 100. And a high speed signal line 90 for connecting the control module connector 30, the switch module connector 40, and the baseband module connector 50; the power module connector 20, the control module connector 30, the switch module connector 40, and the baseband module connector 50. The fan module connector 60 is fixedly connected to the printed board 10; at least one of the power signal line 70, the low speed signal line 80, the high speed signal line 90 and the control signal line 100 is not printed on the printed board 10 At least another signal line is printed on the printed board 10.

The following describes the structural features of the BBU backplane 1 and one or more printed on the printed board 10 The condition of the signal line.

Referring to FIG. 1, in the embodiment, the printed board 10 is a rectangular board, and the power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 are along the printed board. The length direction of 10 is sequentially arranged on the printed board 10. The power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 are all fixed to the printed board 10 by screws. Of course, in other embodiments, the power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 can also be fixed by printing, snapping, or the like. On the board 10 .

When the high speed signal line 90 is not printed on the printed board 10, between the control module connector 30 and the switch module connector 40, and between the switch module connector 40 and the baseband module connector 50, an external high speed signal line 90 is passed. Connected. The high speed signal lines 90 are preferably flat cables which are disposed on the bottom side of the BBU backplane 1. In this embodiment, the flat cable is separately disposed between the control module connector 30 and the switch module connector 40, and between the switch module connector 40 and the baseband module connector 50, to implement the control module connector. High speed signal communication between the switch module connector 40 and the switch module connector 40 and the baseband module connector 50.

When the high speed signal line 90 is not printed on the printed board 10, and the power signal line 70, the low speed signal line 80, and the control signal line 100 are all printed on the printed board 10, the functions of the connectors are as follows:

The power module connector 20 is preferably a power module socket, provides a physical connection port for the power module, and supplies power to each module in the entire BBU through the printed board 10 and the power signal line 70;

The fan module connector 60 is preferably a fan module socket, and provides a physical connection port for the fan module, and provides a control signal for the fan module through the printed board 10, the low-speed signal line 80, and the control signal line 100;

The switch module connector 40 is preferably a switch module socket, and provides a physical connection port for the switch module, through the printed board 10, the power signal line 70, the low speed signal line 80, and the control signal line 100. Do not provide power, low speed signals, control signals, etc. for the switch module;

The baseband module connector 50: preferably a baseband module socket, provides a physical connection port for the baseband module, and supplies power, low speed signals to the switch module through the printed board 10, the power signal line 70, the low speed signal line 80, and the control signal line 100, respectively. Control signal, etc.

The control module connector 30 is preferably a control module socket, provides a physical connection port for the control module, and provides various signaling and system clocks for the other modules through the printed board 10 and the control signal line 100.

Printed board 10: provides a physical connection port for each connector, providing physical and electrical interconnections for power signal line 70, low speed signal line 80, and control signal line 100.

Among them, high-speed flat cable has 3M, VOLE and other manufacturers can mass-produce, can meet the transmission of 6G to 10G signal, in use, does not need special treatment for high-speed flat cable can be used directly. The low speed signal line 80 includes an Inter-Integrated Circuit (I2C). Of course, other low speed signal lines 80 may be included in other embodiments.

Of course, in other embodiments, one or more of the low-speed signal line 80, the power signal line 70, and the control signal line 100 may not be printed on the printed board 10. In the following, several cases are specifically described:

Referring to FIG. 2, when the low speed signal line 80 is not printed on the printed board 10, the power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 are They are connected by an external low-speed signal line 80.

When the control signal line 100 is not printed on the printed board 10, the power module connector 20, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 are all connected to the control module. The connector 30 is connected by an external control signal line 100.

When the power signal line 70 is not printed on the printed board 10, the control module connector 30, the control module connector 30, the switch module connector 40, the baseband module connector 50, and the fan module connector 60 are all connected to the power module. The connector 20 is connected by an external power signal line 70.

Certainly, in other embodiments, any combination of the low-speed signal line 80, the high-speed signal line 90, the power signal line 70, and the control signal line 100 can be independently formed, thereby simplifying the structure of the printed board 10 and simplifying the design difficulty of the BBU backplane 1. To shorten the design cycle of the BBU backplane 1 .

In this embodiment, one or more of the power signal line 70, the low speed signal line 80, the high speed signal line 90, and the control signal line 100 are separated from the printed board 10, particularly by the most complicated high speed signal. When the line 90 is separated from the BBU backplane 1, the structure of the BBU backplane 1 is simplified, thereby effectively simplifying the design of the BBU backplane 1, so that the BBU backplane 1 does not design the high-speed signal line 90, BBU Only the power signal line 70, the control signal line 100 and the low-speed signal line 80 are placed on the backplane 1. The technical difficulty is greatly reduced, and the design and EDA can be easily realized, and the design speed of the BBU backplane 1 is accelerated, and the speed is effectively shortened. The design cycle is achieved by separating the high-speed signal line 90 from the printed board 10, thereby reducing the risk of signal loss during the transmission of the high-speed signal; by separating the high-speed signal line 90 from the printed board 10, the high-speed signal line is made. 90 does not need to pass the position of the pad outlet, via, connector pad winding, AC coupling capacitor, etc., which avoids the signal reflection caused by the discontinuity of the high-speed signal line 90 when passing the above position. The phenomenon that the signal quality deteriorates occurs; the BBU backplane 1 without the high-speed signal line 90 is only the ordinary printed board 10, and the complicated manufacturing factors such as impedance control are not required, so that the manufacturing process is simplified, thereby making the manufacturing time and manufacturing. The cost is greatly reduced, which in turn facilitates the rapid development of the BBU backplane 1 and BBU.

The utility model further discloses a baseband unit BBU.

A baseband unit BBU includes a BBU backplane 1 and a power module, a fan module, a control module, a baseband module, and a switch module; the power module is fixedly connected to the power module connector 20; and the fan module is fixedly connected to the fan module connector 60; The control module is fixedly connected to the control module connector 30; the baseband module is fixedly connected to the baseband module connector 50; and the switch module is fixedly connected to the switch module connector 40. The power module connector 20 is a power module socket; the fan module connector 60 is a fan module socket; the control module connector 30 is a control module socket; the baseband module connector 50 is a baseband module socket; and the switch module connector 40 is a switch module. Socket; BBU backplane 1 The structure refers to the above embodiment, and details are not described herein again.

In this embodiment, one or more of the power signal line 70, the low speed signal line 80, the high speed signal line 90, and the control signal line 100 are separated from the printed board 10, particularly by the most complicated high speed signal. The line 90 is separated from the BBU backplane 1 to make the structure of the BBU backplane 1 simple, thereby effectively simplifying the design of the BBU backplane 1, so that the BBU backplane 1 does not design the high-speed signal line 90, and the BBU back Only the power signal line 70, the control signal line 100 and the low-speed signal line 80 are placed on the board 1. The technical difficulty is greatly reduced, and the design and EDA can be easily realized, and the design speed of the BBU backplane 1 is accelerated, and the speed is effectively shortened. The design cycle; by separating the high-speed signal line 90 from the printed board 10, the risk of signal loss during high-speed signal transmission is reduced; by separating the high-speed signal line 90 from the printed board 10, the high-speed signal line 90 is made. It does not need to pass the position of the pad outlet, via, connector pad winding, AC coupling capacitor, etc., and avoids the signal reflection caused by the discontinuity of the high-speed signal line 90 when passing the above position. The phenomenon that the signal quality deteriorates occurs; the BBU backplane 1 without the high-speed signal line 90 is only the ordinary printed board 10, and the complicated manufacturing factors such as impedance control are not required, so that the manufacturing process is simplified, thereby making the manufacturing time and the manufacturing cost. It has been greatly reduced, which in turn is beneficial to the rapid development of BBU backplane 1 and BBU.

The utility model further discloses a distributed base station.

A distributed base station includes a baseband unit BBU. The structure of the baseband unit refers to the foregoing embodiment, and details are not described herein again.

In this embodiment, one or more of the power signal line 70, the low speed signal line 80, the high speed signal line 90, and the control signal line 100 are separated from the printed board 10, particularly by the most complicated high speed signal. The line 90 is separated from the BBU backplane 1 to make the structure of the BBU backplane 1 simple, thereby effectively simplifying the design of the BBU backplane 1, so that the BBU backplane 1 does not design the high-speed signal line 90, and the BBU back Only the power signal line 70, the control signal line 100 and the low-speed signal line 80 are placed on the board 1. The technical difficulty is greatly reduced, and the design and EDA can be easily realized, and the design speed of the BBU backplane 1 is accelerated, and the speed is effectively shortened. Design cycle; by printing high speed signal line 90 The board 10 is independent, which reduces the risk of signal loss during high-speed signal transmission; by separating the high-speed signal line 90 from the printed board 10, the high-speed signal line 90 does not need to pass through the pad outlet, via, and connection. The position of the pad winding and the AC coupling capacitor avoids the phenomenon that the high-speed signal line 90 causes signal reflection due to discontinuous impedance when the position passes through the above position, resulting in deterioration of signal quality; no high-speed signal line 90 The BBU backplane 1 is only an ordinary printed board 10, and does not need to consider complicated factors such as impedance control, so that the manufacturing process is simplified, thereby greatly reducing manufacturing time and manufacturing cost, thereby facilitating the rapid growth of the BBU backplane 1 and the BBU. development of.

The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the patents of the present invention. Any equivalent structure or equivalent flow transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related The technical fields are all included in the scope of patent protection of the present invention.

Claims

A distributed base station baseband unit BBU backplane, the BBU backplane includes a power module connector, a control module connector, a switch module connector, a baseband module connector, a fan module connector, and a printed board for connecting The power module connector, the control module connector, the switch module connector, the baseband module connector, the power signal line of the fan module connector, the low speed signal line and the control signal line, and the connector for connecting the control module High-speed signal lines for module connectors and baseband module connectors;

The power module connector, the control module connector, the switch module connector, the baseband module connector, and the fan module connector are all fixedly connected to the printed board;

At least one of the power signal line, the low speed signal line, the high speed signal line, and the control signal line is not printed on the printed board, and at least another signal line is printed on the printed board. .
The BBU backplane of claim 1 wherein said high speed signal line is externally disposed relative to said printed board;

The external high speed signal line is used to connect between the control module connector, the switch module connector, and the baseband module connector.
The BBU backplane of claim 2 wherein said high speed signal line is a high speed flat cable.
The BBU backplane according to claim 1 or 2, wherein the low speed signal line is externally disposed with respect to the printed board;

The external low speed signal line is used to connect the power module connector, the control module connector, the switch module connector, the baseband module connector, and the fan module connector.
The BBU backplane according to claim 1 or 2, wherein the control signal line is externally disposed with respect to the printed board;

The external control signal line is used to connect the power module connector and the control module , switch module connector, baseband module connector, and fan module connector.
The BBU backplane according to claim 1 or 2, wherein the power signal line is externally disposed with respect to the printed board;

The external power signal line is used to connect the control module connector, the power module connector, the switch module connector, the baseband module connector, and the fan module connector.
A baseband unit BBU, comprising the BBU backplane according to any one of claims 1 to 6, and a power module, a fan module, a control module, a baseband module, and a switch module;

The power module is fixedly connected to the power module connector;

The fan module is fixedly connected to the fan module connector;

The control module is fixedly connected to the control module connector;

The baseband module is fixedly connected to the baseband module connector;

The switch module is fixedly connected to the switch module connector.
The baseband unit BBU according to claim 7, wherein the power module connector is a power module socket; the fan module connector is a fan module socket; the control module connector is a control module socket; and the baseband module The connector is a baseband module socket; the switch module connector is a switch module socket.
A distributed base station comprising the baseband unit of claim 7 or 8.