WO2016127513A1

WO2016127513A1 - Baseband pool sharing method and device, and distributed base station system

Info

Publication number: WO2016127513A1
Application number: PCT/CN2015/078785
Authority: WO
Inventors: 王映
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-02-15
Filing date: 2015-05-12
Publication date: 2016-08-18
Also published as: CN105992344A

Abstract

A baseband pool sharing method and device, and a distributed base station system. The method comprises: a baseband pool sharing device receives to-be-processed data that is sent by a first radio remote unit (RRU), the baseband pool sharing device comprising a plurality of base band units (BBU); allocate a first BBU to the to-be-processed data according to a preset processing policy, and instruct the first BBU to process the to-be-processed data; and acquire a processing result after the to-be-processed data is processed by the first BBU, and feed back the processing result to the first RRU or a core network side.

Description

Baseband pool sharing method, device and distributed base station system

Technical field

This document relates to the field of wireless communications, and in particular, to a baseband pool sharing method and apparatus, and a distributed base station system.

Background technique

A traditional distributed base station, the baseband unit (BBU) is generally located at the same site as the remote radio unit (RRU). The BBU is usually installed in the equipment room or cabinet. Internally, it is responsible for the baseband data processing of the base station. The RRU is usually connected to the antenna through the feeder line in an outdoor environment, and is responsible for radio frequency and intermediate frequency data processing. In this mode, the amount of RRU data that can be processed by each BBU is limited. Generally, only one to six RRU devices can be connected to one BBU. The size of the BBU is relatively small. Generally, the standard rack width is used, and the height is 1U to 3U. The BBU requires a separate installation environment, power supply, battery, transmission, monitoring, GPS clock input and other systems. The utilization efficiency of these resources is low, and the number of devices is increased, which increases the system failure point.

With the increasing requirements for centralized maintenance and the more difficult site rental, it is necessary to centralize the installation of the baseband data processing equipment. The current practice is to change the installation position of the independent BBU from the base station side to the centralized installation room, but The architecture principle has not been changed. It is still that a BBU is only responsible for processing the baseband data of the RRU directly connected to the optical fiber, and cannot share the baseband resources.

In terms of baseband resource utilization efficiency, the traditional BBU is only responsible for processing the baseband data of the RRU directly connected to the optical fiber, and cannot share the baseband resources between different BBUs. Therefore, the tide of traffic cannot be solved. For example, during the daytime period, the traffic volume in the residential area is low, the base station baseband data processing volume is low, and the equipment hardware resources are idle, but the baseband resources cannot be allocated to the high-traffic areas such as the daytime business district. In the same way, the business volume in the business district at night is low, the baseband data processing is low, and the hardware resources of the equipment are idle, but it is impossible to allocate baseband resources to high-traffic areas such as residential areas at night. In order to meet the service service indicators, devices in different areas must be configured according to the highest service volume, resulting in a huge waste of equipment hardware resources.

In terms of supporting equipment, in order to make the BBU work normally, each base station must be equipped with power, battery, transmission, monitoring, GPS clock input, air conditioning, and so on. The large number of devices increases the point of system failure. Even if the BBU traffic is very low, these devices must operate normally. In particular, the air-conditioning equipment never stops, and the power consumption is large, which is the main power consumption of the base station.

In terms of the installation environment, the BBU can only be installed in the equipment room or in the cabinet with environmental protection capability. It needs to occupy a certain installation space. In order to provide services, it is generally necessary to rent a machine room for BBU and supporting equipment. The rental cost is high. .

Summary of the invention

The embodiment of the invention provides a baseband pool sharing method and device, and a distributed base station system, which solves the problems that the above mentioned baseband resources cannot be shared, hardware resource utilization is low, and creation and maintenance costs are high.

A baseband pool sharing method includes:

The baseband pool sharing device receives the data to be processed sent by the first remote radio unit RRU, and the baseband pool sharing device includes a plurality of baseband processing units BBU;

The baseband pool sharing device allocates a first BBU to the to-be-processed data according to a preset processing policy, and instructs the first BBU to process the to-be-processed data;

The baseband pool sharing device obtains the processing result of the to-be-processed data processed by the first BBU, and feeds back the processing result to the first RRU or the core network side.

Optionally, the step of allocating the first BBU to the to-be-processed data according to the preset processing policy includes:

Determine the current business processing pressure indicator of each BBU;

And filtering, according to the service processing pressure indicator, a BBU in which the service processing pressure of the multiple BBUs is lower than a preset threshold, to form a BBU to be allocated;

Determining one of the BBUs to be allocated as the first BBU, and forwarding the to-be-processed data to the first BBU.

Optionally, the baseband pool sharing device receives the first location information sent by the first RRU when receiving the to-be-processed data sent by the first remote radio unit (RRU);

The step of allocating the first BBU to the to-be-processed data according to the preset processing policy includes:

Searching for the BBU corresponding to the first RRU according to the correspondence between the pre-established RRU and the BBU;

Detecting whether the service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold;

If yes, determining the BBU corresponding to the first RRU as the first BBU;

If not, the BBUs in the plurality of BBUs with the service processing pressure lower than the preset threshold are filtered according to the service processing pressure indicator of each BBU, and the BBUs to be allocated are formed; and one BBU in the BBU set to be allocated is selected. Determining to be the first BBU, and forwarding the to-be-processed data to the first BBU.

Optionally, before the step of receiving the first location information sent by the first RRU, the step of the baseband pool sharing device receiving the data to be processed sent by the first remote radio unit (RRU) further includes:

The correspondence between the RRU and the BBU is saved to the local, and the correspondence between the RRU and the BBU is created according to the location information of the RRU.

A baseband pool sharing device includes:

a plurality of first interfaces, each of which is connected to a remote radio unit RRU, and configured to receive data to be processed sent by the first remote radio unit RRU;

a plurality of baseband processing units BBU configured to process the data to be processed allocated to itself;

The main control board is connected to the first interface and the BBU, and is configured to allocate a first BBU to the to-be-processed data according to a preset processing policy, and instruct the first BBU to process the to-be-processed data;

The first interface is further configured to feed back data processed by the BBU to a corresponding first RRU.

Optionally, the main control board includes:

The first receiving module is configured to receive the self-service processing amount reported by each BBU;

a screening module, configured to filter the BBUs in the plurality of BBUs whose service processing volume is lower than a preset threshold, to form a BBU set to be allocated;

And a forwarding module, configured to forward the to-be-processed data to one of the BBUs to be allocated.

Optionally, the main control board further includes:

a second receiving module, configured to receive first location information sent by the first RRU;

a locating module, configured to search for a BBU corresponding to the first RRU according to a correspondence between the pre-established RRU and the BBU;

a detecting module, configured to detect whether a service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold;

The first determining module is configured to determine, when the service processing pressure of the BBU corresponding to the first RRU is lower than the preset threshold, the BBU corresponding to the first RRU as the first BBU;

And the second determining module is configured to: when the service processing pressure of the BBU corresponding to the first RRU is equal to or greater than the preset threshold, filter the service processing pressure of the multiple BBUs according to the service processing pressure indicator of each BBU The BBUs of the preset thresholds form a BBU set to be allocated; and determine one BBU in the BBU set to be allocated as the first BBU, and forward the to-be-processed data to the first BBU.

Optionally, the device further includes:

The storage module is configured to: save the correspondence between the RRU and the BBU to the local, where the correspondence between the RRU and the BBU is created according to the location information of the RRU.

A distributed base station system includes: a first-stage optical switch, an RRU, a base station controller, and the baseband pool sharing device;

The baseband pool sharing device is directly connected to an RRU through an optical fiber, or is connected to multiple RRUs through the first-stage optical switch;

The baseband pool sharing device is coupled to the base station controller.

Optionally, the baseband pool sharing device is directly connected to the base station controller through an optical fiber.

Optionally, the system further includes: a second level optical switch, wherein the baseband pool sharing device is connected to the base station controller by the second level optical switch.

A computer readable storage medium storing program instructions that, when executed, implement the methods described above.

The embodiment of the present invention can form a large-capacity baseband pool sharing device by using a plurality of baseband processing units BBU, thereby not only improving the data processing capability thereof, but also reducing the storage room of the conventional baseband processor, improving the utilization of hardware resources, and Construction costs and maintenance costs are reduced to some extent.

BRIEF abstract

1 is a flowchart showing a baseband pool sharing method according to an embodiment of the present invention;

2 is a schematic structural diagram of a baseband pool sharing apparatus according to an embodiment of the present invention;

Figure 3 shows a distributed base station system in accordance with an embodiment of the present invention.

In the figure: 1, baseband pool sharing device, 2, remote radio unit RRU, 3, first-level optical switch, 4, base station controller, 5, second-level optical switch;

11. The first interface, 12, the baseband processing unit BBU, 13, the main control board.

Embodiments of the invention

Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the invention has been shown and described with reference to the embodiments Embodiment 1

As shown in FIG. 1, an embodiment of the present invention provides a baseband pool sharing method, including:

Step 10: The baseband pool sharing device receives the data to be processed sent by the first remote radio unit RRU, and the baseband pool sharing device includes a plurality of baseband processing units BBU.

A baseband pool sharing device that combines multiple BBUs, with large data volume computing capability and sufficient backplane data interaction capability. Each BBU in the same baseband pool sharing device can share resources, and the baseband pool sharing device can be regarded as a first-level baseband data processing resource pool.

The first RRU is responsible for transmitting the to-be-processed data, that is, the processed radio frequency or intermediate frequency signal, to the baseband pool sharing device through the optical fiber network, and the signal transmission may be direct fiber connection, or may be performed through a network formed by an optical switch or the like. Transfer.

Step 20: Allocating a first BBU to the to-be-processed data according to the preset processing policy, and instructing the first BBU to process the to-be-processed data.

After the baseband pool sharing device receives the to-be-processed data sent by the first RRU, the first RBU is allocated to the first RRU according to the preset processing policy. The baseband pool sharing device may perform resource allocation according to the setting of the network management system, and process the data to be processed from the RRU. When processing the data to be processed, it can be performed by any BBU. For example, the BBU with more idle resources is preferentially used, and the hardware resource allocation mode is selected by the network management system or manually.

Step 30: Obtain the processing result of the data to be processed processed by the first BBU, and feed back the processing result to the first RRU or the core network side.

After the first BBU processes the to-be-processed data, a processing result is obtained, and the baseband pool sharing device feeds back the processing result to the first RRU, or transmits the processing result to the base station controller or the core network side, and the signal transmission may be optical fiber straight. It is also possible to transmit through a network formed by an optical switch or the like.

In this embodiment, by using a plurality of baseband processing units BBU to form a large-capacity baseband pool sharing device, not only the data processing capability thereof can be improved, but also the storage room of the conventional baseband processor can be reduced, and the hardware resource utilization rate is improved, and Construction costs and maintenance costs are reduced to some extent.

Optionally, the allocating the first BBU for the to-be-processed data according to the preset processing policy, as described in step 20, includes:

Determine the current business processing pressure indicators of each BBU. The service processing pressure indicator refers to the ratio of the currently processed traffic volume to the highest traffic volume of the BBU.

The BBUs in the BBU whose service processing pressure is lower than the preset threshold are filtered according to the service processing pressure indicator to form a BBU to be allocated. For example, if the preset threshold is 0.8, when a BBU needs to be allocated for a certain pending data, the current processing pressure of each BBU is to be queried. When the service processing pressure of a certain BBU is 0.6, the BBU is divided into In the allocation BBU set, when the service processing pressure value of a certain BBU is 0.9, the BBU is ignored and the other BBUs are re-detected.

One BBU in the BBU set to be allocated is determined as the first BBU, and the data to be processed is forwarded to the first BBU. The processing of the data to be processed may be performed by any BBU in the baseband pool sharing device. Optionally, the baseband processing device with more idle resources may be preferentially used, and the specific hardware resource allocation mode may be independently or manually selected by the network management system.

Optionally, the preset processing strategy mentioned in step 20 can also be performed in the following manner. When the baseband pool sharing device receives the to-be-processed data sent by the first remote radio unit RRU, the first location information sent by the first RRU is further received;

If yes, determining the BBU corresponding to the first RRU as the first BBU;

If not, the BBU in the BBU is configured to be the BBU to be allocated according to the service processing pressure indicator of each BBU, and the BBU in the BBU to be allocated is determined as the first BBU. The data to be processed is forwarded to the first BBU.

Optionally, before the step of receiving the first location information sent by the first RRU, the step of receiving the first location information sent by the first RRU, the method further includes: associating the RRU with the BBU The relationship is saved to the local, where the correspondence between the RRU and the BBU is created according to the location information of the RRU. It is to be noted that the method for creating the correspondence between the BBU and the RRU is consistent with the method for creating the correspondence between the BBU and the RRU in the prior art, and therefore is not described in detail herein.

As shown in FIG. 2, in another aspect of the embodiment of the present invention, a baseband pool sharing apparatus 1 is provided, including:

Each of the first interfaces 11 is connected to a remote radio unit RRU2, and is configured to receive data to be processed sent by the first remote radio unit RRU.

a plurality of baseband processing units BBU12, configured to process the data to be processed allocated to itself;

The main control board 13 is connected to the first interface 11 and the BBU 12, and is configured to allocate a first BBU to the data to be processed according to the preset processing policy, and instruct the first BBU to process the data to be processed;

The first interface 11 is further configured to feed back the processed data to be processed to the corresponding first RRU.

A plurality of BBU combinations are used, which have a large amount of data computing capability and sufficient backplane data interaction capability, and each BBU 12 can share resources to form a first-level baseband data processing resource pool. The baseband data processing resource pool can process the data processing request sent by one or more RRU2s, and the baseband pool resource allocation mode can be used in load balancing, active/standby, and remote disaster recovery. The specific processing range can be in the network management system. set up. The data to be processed processed by the baseband pool sharing device is independent of the RRU standard, frequency band, service type, clock synchronization requirement, geographic location, and carrier type.

The baseband pool sharing device can be configured as a rack structure, and the rack can be expanded according to the need of computing traffic, so as to provide more interfaces and processing capabilities, and the host frame provides control, clock input, network management interface, and the like. The rack is primarily responsible for interface expansion and baseband data processing.

With the baseband pool sharing device 1 described above, each RRU 2 can no longer independently acquire a clock signal, but is acquired by the baseband pool sharing device 1 and then allocated to each RRU 2 through optical fiber transmission. Thus, the baseband pool sharing device 1 and all of the RRUs connected thereto need only one clock signal input. The type of clock input can be freely selected, such as GPS, Bits, 1588 and other clock input methods.

When GPS is used as the clock source, the GPS antenna can be connected to the baseband pool sharing device 1 or to any RRU2. When the GPS clock is obtained through the RRU 2, the acquired clock information is reported by the RRU 2 to the baseband pool sharing device 1 through the optical fiber transmission, and then optimized and adjusted by the baseband pool sharing device 1 to be allocated to all the RRUs 2 .

The RRU2 can independently acquire the GPS clock signal if necessary, and compare the acquired clock signal with the clock signal provided by the baseband pool sharing device 1. After selecting the optimal clock according to a specific algorithm, the baseband pool provides synchronization to the system. Use, and can feedback the comparison results to the network management system for system operation and maintenance personnel to consult.

When the RRU2 is far away from the baseband pool sharing device 1, or the clock drifts due to transmission quality problems, and affects system synchronization, a clock calibration link can be established between the baseband pool sharing device 1 and the RRU 2 to improve the remote capability of the RRU 2.

RRU2 in different areas can also use GPS input alone instead of the clock provided by the baseband pool sharing device 1. The specific selection method can be adjusted automatically or manually by the network management.

Optionally, the main control board 13 includes:

The first receiving module is configured to receive the self-service processing amount reported by the BBU 12;

The screening module is configured to filter the BBUs in the BBU 12 with the service processing volume lower than the preset threshold, and form a BBU set to be allocated;

The forwarding module is configured to forward the to-be-processed data to one BBU in the BBU to be allocated.

Optionally, the main control board 13 further includes:

The locating module is configured to search for the BBU corresponding to the first RRU according to the correspondence between the pre-established RRU and the BBU;

The detecting module is configured to detect whether the service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold;

The first determining module is configured to determine, when the service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold, the BBU corresponding to the first RRU as the first BBU;

The second determining module is configured to filter the service processing in the BBU according to the service processing pressure indicator of each BBU when the service processing pressure of the BBU corresponding to the first RRU is equal to or greater than a preset threshold. A BBU whose pressure is lower than a preset threshold constitutes a BBU set to be allocated; and determines one BBU in the BBU set to be allocated as the first BBU, and forwards the to-be-processed data to the first BBU.

Optionally, the baseband pool sharing device further includes:

The storage module is configured to save the correspondence between the RRU and the BBU to the local device, where the correspondence between the RRU and the BBU is created according to the location information of the RRU.

It should be noted that the device is a device corresponding to the method for sharing the baseband pool. All the implementations in the foregoing method embodiments are applicable to the embodiment of the device, and the same technical effects can be achieved.

According to still another aspect of the present application, a distributed base station system is further provided. As shown in FIG. 3, the system includes: a baseband pool sharing device 1, a first-stage optical switch 3, an RRU2, and a base station controller as described above. 4; wherein the baseband pool sharing device 1 is directly connected to one RRU2 through an optical fiber, or is connected to a plurality of RRU2 through the first-stage optical switch 3; the baseband pool sharing device 1 is respectively connected to the base station controller 4 through an optical fiber.

The baseband pool sharing device 1 located in the same machine room or a plurality of independent racks of similar geographical position can be connected by fiber optics to form a network form of a mesh, a star, a chain or a mixed network. The baseband pool of the independent rack can independently perform baseband data processing, or can jointly process the baseband data processing request of any interface, and combine all the baseband data processing devices to form a second-level baseband data processing resource pool.

Considering the problems of actual wiring and transmission mode, the optical transmission of multiple RRU2s is allowed to be concentrated to a certain first-level optical switch 3, and then connected to the baseband pool sharing device 1 by a larger-bandwidth optical fiber transmission.

The baseband pool sharing device 1 is a basic baseband pool cluster built by a basic physical unit group, and each baseband pool sharing device 1 is independent of each other in hardware, and can operate independently; or can form a mesh, chain, star or mixed network. The form provides a larger data processing capability, implements load sharing or active/standby work, and can automatically or manually select and switch its working mode.

The clock mode adopted by the system can adopt the clock synchronization mode described above, and therefore will not be described herein.

Since the baseband data processing resources of multiple BBUs can be shared, the tide of traffic volume is solved, the use efficiency of the BBU is improved, the investment amount of equipment is greatly reduced, and the cost of land acquisition and computer room rental is greatly reduced. With the baseband pool sharing device 1, one or several devices can be used for the entire city. The deployment of the corresponding power supply, transmission, monitoring, clock and other systems will be greatly simplified. The cost of the supporting equipment will be reduced from thousands of scattered small devices to one or several large devices. Thousands of air conditioners can also be unified into one central air conditioner, and even share the machine room with existing base station controllers or core network equipment, saving operating costs such as air conditioning and electricity costs. In addition, since the traditional BBU generally needs to be installed in the equipment room along with other supporting equipment, it is no longer necessary to lease the BBU equipment room after the centralized architecture, and the rental cost can be greatly reduced.

Embodiment 2

As shown in FIG. 3, the distributed base station system of the embodiment of the present invention further includes: a second-level optical switch, wherein the plurality of baseband pool sharing devices are connected to the base station controller through the second-level optical switch.

Between the baseband pool sharing devices 1 located in different geographical locations or incapable of direct fiber connection, a wide-area baseband pool network can be formed through a dedicated or public network. A wide-area baseband pool network may include multiple second-level baseband data processing resource pools, and can perform interactive operations such as automatically or manually assigning data processing authority, setting thresholds, and feedback results through the network management system to form a third level. Baseband data processing resource pool.

The first-level baseband data processing resource pool or the second-level baseband data processing resource pool can be shared, and the computing resources can be automatically allocated to any port with computing requirements, or the network management can specify the data processing priority of a certain port to implement the load. Sharing or active/standby work, and can automatically or manually select and switch its working mode.

Considering the problems of actual wiring and transmission mode, the optical fiber transmission of multiple second-level baseband data processing resource pools is allowed to be concentrated to a second-level optical switch 5, and then connected to the core network or base station by a larger-bandwidth optical fiber transmission. Controller 4.

The clock synchronization mode of the system may be the same as that of the clock synchronization method described in the first embodiment, and therefore will not be described here.

The baseband pool sharing method and device and the distributed base station system according to the first embodiment and the second embodiment of the present invention solve the problem that the hardware resources of the BBU and the supporting equipment are low in utilization efficiency, the types and quantity of devices are large, and the base station consumes a large amount of energy. High installation environment requirements, rapid deployment of base stations, simplified installation process, reduced material costs, and reduced number of possible system failure points.

Those of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium. The computer program is executed on a corresponding hardware platform (eg, system, device, device, device, etc.), and when executed, includes one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The embodiment of the present invention forms a large-capacity baseband pool sharing device by using multiple baseband processing units BBU, which not only improves the data processing capability, but also reduces the storage room of the traditional baseband processor, improves the utilization of hardware resources, and is certain To a lesser extent, construction costs and maintenance costs are reduced.

Claims

A baseband pool sharing method includes:

The baseband pool sharing device receives the data to be processed sent by the first remote radio unit RRU, and the baseband pool sharing device includes a plurality of baseband processing units BBU;

The baseband pool sharing device allocates a first BBU to the to-be-processed data according to a preset processing policy, and instructs the first BBU to process the to-be-processed data;

The baseband pool sharing device obtains the processing result of the to-be-processed data processed by the first BBU, and feeds back the processing result to the first RRU or the core network side.
The baseband pool sharing method according to claim 1, wherein the step of allocating the first BBU to the to-be-processed data according to the preset processing policy comprises:

Determine the current business processing pressure indicator of each BBU;

And filtering, according to the service processing pressure indicator, a BBU in which the service processing pressure of the multiple BBUs is lower than a preset threshold, to form a BBU to be allocated;

Determining one of the BBUs to be allocated as the first BBU, and forwarding the to-be-processed data to the first BBU.
The baseband pool sharing method according to claim 1, wherein the baseband pool sharing device receives the first location information sent by the first RRU when receiving the data to be processed sent by the first remote radio unit RRU;

The step of allocating the first BBU to the to-be-processed data according to the preset processing policy includes:

Searching for the BBU corresponding to the first RRU according to the correspondence between the pre-established RRU and the BBU;

Detecting whether the service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold;

If yes, determining the BBU corresponding to the first RRU as the first BBU;

If not, the BBUs in the plurality of BBUs with the service processing pressure lower than the preset threshold are filtered according to the service processing pressure indicator of each BBU, and the BBUs to be allocated are formed; and one BBU in the BBU set to be allocated is selected. Determining to be the first BBU, and forwarding the to-be-processed data to the first BBU.
The baseband pool sharing method according to claim 3, wherein the baseband pool sharing device receives Before the step of receiving the first location information sent by the first RRU, the method further includes:

The correspondence between the RRU and the BBU is saved to the local, and the correspondence between the RRU and the BBU is created according to the location information of the RRU.
A baseband pool sharing device includes:

a plurality of first interfaces, each of which is connected to a remote radio unit RRU, and configured to receive data to be processed sent by the first remote radio unit RRU;

a plurality of baseband processing units BBU configured to process the data to be processed allocated to itself;

The main control board is connected to the first interface and the BBU, and is configured to allocate a first BBU to the to-be-processed data according to a preset processing policy, and instruct the first BBU to process the to-be-processed data;

The first interface is further configured to feed back data processed by the BBU to a corresponding first RRU.
The baseband pool sharing device according to claim 5, wherein the main control board comprises:

The first receiving module is configured to receive the self-service processing amount reported by each BBU;

a screening module, configured to filter the BBUs in the plurality of BBUs whose service processing volume is lower than a preset threshold, to form a BBU set to be allocated;

And a forwarding module, configured to forward the to-be-processed data to one of the BBUs to be allocated.
The baseband pool sharing device of claim 5, wherein the main control board further comprises:

a second receiving module, configured to receive first location information sent by the first RRU;

a locating module, configured to search for a BBU corresponding to the first RRU according to a correspondence between the pre-established RRU and the BBU;

a detecting module, configured to detect whether a service processing pressure of the BBU corresponding to the first RRU is lower than a preset threshold;

The first determining module is configured to determine, when the service processing pressure of the BBU corresponding to the first RRU is lower than the preset threshold, the BBU corresponding to the first RRU as the first BBU;

And the second determining module is configured to: when the service processing pressure of the BBU corresponding to the first RRU is equal to or greater than the preset threshold, filter the multiple according to the service processing pressure indicator of each BBU A BBU in which the service processing pressure is lower than the preset threshold in the BBU constitutes a BBU set to be allocated; and determines one BBU in the BBU set to be allocated as the first BBU, and forwards the to-be-processed data to the first On the BBU.
The baseband pool sharing device of claim 7, further comprising:

The storage module is configured to: save the correspondence between the RRU and the BBU to the local, where the correspondence between the RRU and the BBU is created according to the location information of the RRU.
A distributed base station system, comprising: a first-stage optical switch, an RRU, a base station controller, and the baseband pool sharing device according to any one of claims 5 to 8;

The baseband pool sharing device is directly connected to an RRU through an optical fiber, or is connected to multiple RRUs through the first-stage optical switch;

The baseband pool sharing device is coupled to the base station controller.
The distributed base station system according to claim 9, wherein said baseband pool sharing means is directly connected to said base station controller via an optical fiber.
The distributed base station system of claim 9 further comprising: a second level optical switch, wherein said baseband pool sharing device is coupled to said base station controller by said second level optical switch.
A computer readable storage medium storing program instructions that, when executed, can implement the method of any of claims 1-4.