CN102802170B - Obtain method, device and the base station of ethernet data frame - Google Patents

Abstract

The present invention discloses a method for obtaining Ethernet data frames, comprising: while a baseband unit and a radio frequency unit are exchanging CPRI protocol data frames, the baseband unit or radio frequency unit extracts the Ethernet data frames in the CPRI protocol data frames, And send to the acquisition device connected externally with the baseband unit or the radio frequency unit. The invention also proposes a corresponding device and base station. The method, device and base station for acquiring Ethernet data frames proposed by the invention can realize the simple acquisition of Ethernet data frames.

Description

Method, device and base station for acquiring Ethernet data frames

technical field

The invention relates to the communication field, in particular to a method, device and base station for acquiring Ethernet data frames.

Background technique

In the base station system of mobile communication, a single base station is generally divided into a baseband unit and a radio frequency unit. When building a single base station, radio frequency units can be combined with baseband units to form a centralized base station, or they can be placed independently to form a distributed base station system.

With the development of mobile communication technology, especially in the third-generation mobile communication system, the traditional base station that integrates baseband unit and radio frequency unit is difficult to meet the needs of rapid network construction. Therefore, most of the new-generation base stations adopt a distributed base station system, that is, form a new network architecture of a base band unit (Base Band Unit, base band unit) plus a radio frequency unit (Radio Unit, radio frequency unit) as shown in FIG. 1 . The baseband unit and the radio frequency unit are connected by optical fiber (cable), and the communication protocol used is mainly CPRI (Common Public Radio Interface, Common Public Radio Interface) protocol specification.

The CPRI protocol specification is a standard jointly developed by many companies in the communication industry. It regulates the key interface between REC (Radio Equipment Controller, wireless equipment control center) and RE (Radio Equipment, wireless equipment) inside the wireless base station , CPRI protocol data frame structure shown in Figure 2. Based on the CPRI protocol specification, the universality of the interface between the baseband unit and the radio frequency unit can be improved. In the mobile communication base station system, the REC corresponds to the baseband unit, and the RE corresponds to the radio frequency unit.

As shown in Figure 3, the Ethernet (Ethernet) data frame is encapsulated in the CPRI protocol data frame and transmitted as a subframe, and the CPRI protocol data frame can also include other protocols that need to be interacted between other baseband units and radio frequency units format data subframe. Generally speaking, the operation and maintenance information such as the configuration management and alarm collection of the radio frequency unit by the baseband unit are transmitted through Ethernet data frames. If the user needs to view the information of the Ethernet data frame, the Ethernet data frame needs to be captured. However, since the CPRI protocol data frame is transmitted between the baseband unit and the radio frequency unit, if you want to capture the Ethernet data frame, you first need to analyze the CPRI protocol data frame through other professional equipment, and extract the data encapsulated in the CPRI protocol data frame. Ethernet data frames, and cannot affect the normal communication between the baseband unit and the radio frequency unit. Otherwise, it cannot be viewed directly, which makes the commonly used Ethernet data frame capture software unable to complete the capture.

Contents of the invention

The main purpose of the present invention is to provide a method, device and base station for obtaining Ethernet data frames, which can realize the simple and convenient acquisition of Ethernet data frames.

The present invention proposes a method for obtaining Ethernet data frames, comprising:

When the baseband unit and the radio frequency unit are exchanging CPRI protocol data frames, the CPU module of the baseband unit or the radio frequency unit sends the Ethernet data frame to the CPRI protocol module and the capturing device external to the baseband unit or the radio frequency unit; or the The CPRI protocol module of the baseband unit or the radio frequency unit extracts the Ethernet data frame in the CPRI protocol data frame, and sends the extracted Ethernet data frame to the capture device externally connected to the baseband unit or the radio frequency unit through the CPU module.

Preferably, when the baseband unit and the radio frequency unit are exchanging CPRI protocol data frames, the CPU module of the baseband unit or the radio frequency unit sends the Ethernet data frame to the CPRI protocol module and the capture device external to the baseband unit or the radio frequency unit device; or the CPRI protocol module of the baseband unit or the radio frequency unit extracts the Ethernet data frame in the CPRI protocol data frame, and sends the extracted Ethernet data frame to an external connection with the baseband unit or the radio frequency unit through the CPU module The capture devices include:

When or after the CPU module of the baseband unit or the radio frequency unit sends the Ethernet data frame to the public wireless interface CPRI protocol module, it sends the Ethernet data frame to an external interface module except the CPRI protocol interface; or the CPU module receives the CPRI protocol module. Simultaneously or after the Ethernet data frame sent by the protocol module, forward the Ethernet data frame to the external interface module;

The external interface module sends the Ethernet data frame to the capture device.

Preferably, while or after the CPU module sends the Ethernet data frame to the CPRI protocol module, sending the Ethernet data frame to the external interface module includes:

When the CPU module sends the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

After the CPU module sends the Ethernet data frame to the local CPRI protocol module, it sends the Ethernet data frame to the external interface module for a second time.

Preferably, while or after the CPU module receives the Ethernet data frame sent by the CPRI protocol module, forwarding the Ethernet data frame to the external interface module includes:

When the CPU module receives the Ethernet data frame sent by the CPRI protocol module, it copies the Ethernet data frame, and sends the copied Ethernet data frame to the external interface module; or,

After the CPU module receives the Ethernet data frame sent by the CPRI protocol module, it sends the Ethernet data frame to the external interface module for a second time.

The present invention also proposes a device for obtaining Ethernet data frames, including a CPU module, a public wireless interface CPRI protocol module and an external interface module except the CPRI protocol interface, and the CPU module sends Ethernet data frames to the CPRI protocol module while Or afterwards, send the Ethernet data frame to the external interface module; or when the CPU module receives the Ethernet data frame sent by the CPRI protocol module or after, forward the Ethernet data frame to the external interface module;

The external interface module sends the Ethernet data frame to a capture device capable of capturing the Ethernet data frame.

Preferably, the external interface module is an Ethernet interface module or a serial communication interface module.

Preferably, the CPU module is specifically used for:

While sending the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

After sending the Ethernet data frame to the local CPRI protocol module, send the Ethernet data frame to the external interface module for a second time.

Preferably, the CPU module is also used for:

While receiving the Ethernet data frame sent by the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

After receiving the Ethernet data frame sent by the CPRI protocol module, sending the Ethernet data frame to the external interface module for a second time.

The present invention also proposes a base station, including a baseband unit and a radio frequency unit. While the baseband unit and the radio frequency unit are exchanging CPRI protocol data frames, the baseband unit or radio frequency unit is used to send Ethernet data frames to the CPRI protocol module through the CPU module and a capture device external to the baseband unit or radio frequency unit; or extract the Ethernet data frame in the CPRI protocol data frame through the CPRI protocol module, and send the extracted Ethernet data frame to the baseband via the CPU module Capture device external to the unit or radio frequency unit.

Preferably, the baseband unit or the radio frequency unit includes a CPU module, a public wireless interface CPRI protocol module and an external interface module except the CPRI protocol interface, and when or after the CPU module sends an Ethernet data frame to the CPRI protocol module, it sends The Ethernet data frame is sent to the external interface module; or when the CPU module receives the Ethernet data frame sent by the CPRI protocol module or after, forwarding the Ethernet data frame to the external interface module;

The external interface module sends the Ethernet data frame to a capture device capable of capturing the Ethernet data frame.

Preferably, the external interface module is an Ethernet interface module or a serial communication interface module.

Preferably, the CPU module is specifically used for:

While sending the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

After sending the Ethernet data frame to the local CPRI protocol module, send the Ethernet data frame to the external interface module for a second time.

Preferably, the CPU module is also used for:

While receiving the Ethernet data frame sent by the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

After receiving the Ethernet data frame sent by the CPRI protocol module, sending the Ethernet data frame to the external interface module for a second time.

A method, device and base station for obtaining Ethernet data frames proposed by the present invention can easily capture the Ethernet data frames that are encapsulated in the CPRI protocol data frames interactively between the baseband unit and the radio frequency unit. Through the method and device, You can directly view the content of the Ethernet data frame or use commonly used Ethernet data frame capture software to capture and assist analysis.

Description of drawings

FIG. 1 is a schematic diagram of an architecture of a distributed base station in the prior art;

Fig. 2 is the schematic diagram of the CPRI protocol data frame of prior art;

Fig. 3 is the transmission schematic diagram of prior art Ethernet data frame;

Fig. 4 is a schematic flow chart of an embodiment of a method for obtaining an Ethernet data frame in the present invention;

Fig. 5 is a schematic flow chart of the acquisition steps in an embodiment of the method for acquiring Ethernet data frames in the present invention;

Fig. 6 is another schematic flow chart of the obtaining steps in an embodiment of the method for obtaining Ethernet data frames in the present invention;

FIG. 7 is a schematic structural diagram of an embodiment of a device for obtaining Ethernet data frames according to the present invention;

FIG. 8 is a schematic structural diagram of an embodiment of a base station according to the present invention.

The realization of the purpose of the present invention, functional characteristics and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

detailed description

It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

With reference to Fig. 4, propose the present invention obtains the method for Ethernet data frame one embodiment, comprise:

While the baseband unit and the radio frequency unit are exchanging the CPRI protocol data frame, the baseband unit or the radio frequency unit extracts the Ethernet data frame in the CPRI protocol data frame and sends it to the capturing device external to the baseband unit or the radio frequency unit.

The above steps may include:

Step S10, when the CPU module of the baseband unit or the radio frequency unit sends the Ethernet data frame to the CPRI protocol module or after sending the Ethernet data frame to an external interface module other than the CPRI protocol interface; or the CPU module receives the CPRI protocol module Simultaneously or after sending the Ethernet data frame, forward the Ethernet data frame to the external interface module;

The CPRI protocol module of the baseband unit (radio frequency unit) is responsible for encapsulating and analyzing data frames including Ethernet data frames. When sending data, each functional module of baseband unit (radio frequency unit) sends the data that needs to send to the CPRI protocol module on the baseband unit (radio frequency unit) (wherein the Ethernet data frame sent by CPU module is exactly the sending data that the present invention will capture ), the CPRI protocol module encapsulates all data into a CPRI protocol data frame according to the protocol format and sends it to the radio frequency unit (baseband unit) at the opposite end; The CPRI protocol data frame that unit (baseband unit) receives is parsed, and the data that parses out is sent to corresponding baseband unit (radio frequency unit) functional module to process (wherein the Ethernet data frame that sends to CPU module is that the present invention will capture The data).

The above-mentioned CPU module may further include two sub-modules: a data transceiving sub-module and a data processing sub-module. Among them, the data transceiver sub-module is responsible for receiving and sending Ethernet data frames to complete the interaction with the operation and maintenance information of the radio frequency unit (baseband unit), and the data processing sub-module processes the received Ethernet data frames, and is to send The source of the Ethernet data frame.

In this embodiment, the CPRI protocol module is responsible for extracting the Ethernet data frame in the CPRI protocol data frame, the CPU module is responsible for forwarding the Ethernet data frame, and the external interface module is responsible for sending the Ethernet data frame from the interface. When the baseband unit and the radio frequency unit perform data interaction, it is only necessary for either end to obtain the Ethernet data frame when sending or receiving data, and the CPU module sends the Ethernet data frame to the CPRI protocol module at the same time or after sending the Ethernet The network data frame is sent to the external interface module, or at the same time or after receiving the Ethernet data frame sent by the CPRI protocol module, the Ethernet data frame is forwarded to the external interface module.

Step S11, the external interface module sends the Ethernet data frame to a capture device capable of capturing the Ethernet data frame.

Use an Ethernet connection line or a serial communication connection line to connect the Ethernet interface or the serial interface of the baseband unit (radio frequency unit) to a computer that has a capture device capable of capturing Ethernet data frames such as common Ethernet data frame capture software installed, You can use the Ethernet data frame capture software to capture and analyze the Ethernet data frames sent by the CPU module.

In this embodiment, the Ethernet data frame encapsulated in the CPRI protocol data frame that interacts between the baseband unit and the radio frequency unit can be easily captured. Through this method, the content of the Ethernet data frame can be directly viewed or the commonly used Ethernet data frame can be used. Frame capture software captures and assists in analysis.

In one embodiment, the external interface module is an Ethernet interface module or a serial communication interface module.

The external interface module is used to send and receive Ethernet data frames sent by the CPU module, which can be an Ethernet interface module or a serial communication interface module, wherein the Ethernet interface module is used to send and receive Ethernet on the Ethernet interface of the baseband unit (radio frequency unit). Network data frame, while the serial communication interface module is used to send and receive relevant serial communication protocol data frames on the serial communication interface. The above two interface modules are generally used for debugging, maintenance and other purposes, and are necessary modules on the baseband unit (radio frequency unit), without additional configuration, which can achieve the purpose of saving costs.

Referring to FIG. 5, in the above embodiment, step S10 includes:

Step S101, when the CPU module sends the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or,

Step S102 , after the CPU module sends the Ethernet data frame to the local CPRI protocol module, it sends the Ethernet data frame to the external interface module for a second time.

While the data processing sub-module of the CPU module sends the Ethernet data frame to the CPRI protocol module through the data sending and receiving sub-module of the CPU module, the CPU data sending and receiving sub-module copies the same Ethernet data frame; the data sending and receiving sub-module copies the The Ethernet data frame is sent to the external interface module, and the external interface module sends out from the corresponding interface.

Or after the data processing sub-module of the CPU module sends the Ethernet data frame to be sent to the CPRI protocol module through the data sending and receiving sub-module of the CPU module, the data sending and receiving sub-module of the CPU module sends the Ethernet data frame for the second time, That is, it is sent to the external interface module, and the external interface module sends it from the corresponding interface.

Referring to FIG. 6, in the above embodiment, step S10 includes:

Step S103, when the CPU module receives the Ethernet data frame sent by the CPRI protocol module, it copies the Ethernet data frame, and sends the copied Ethernet data frame to the external interface module; or,

Step S104: After receiving the Ethernet data frame sent by the CPRI protocol module, the CPU module sends the Ethernet data frame to the external interface module for a second time.

The CPRI protocol module analyzes the received CPRI protocol data frame, and sends the Ethernet data frame to the data transceiver sub-module of the CPU module; the data transceiver sub-module receives the Ethernet data frame sent by the CPRI protocol Copy the same Ethernet data frame while sending it to the data processing sub-module of the CPU module; the data sending and receiving sub-module sends the copied Ethernet data frame to the external interface module, and the external interface module sends it from the corresponding interface ;

Or the data sending and receiving sub-module receives the Ethernet data frame sent by the CPRI protocol module, and after sending it to the data processing sub-module of the CPU module in a normal way, the data sending and receiving sub-module of the CPU module processes the Ethernet data frame for the second time. Send, that is, send to the external interface module, and the external interface module sends out from the corresponding interface.

With reference to Fig. 7, propose the present invention to obtain the device 300 embodiment of Ethernet data frame, comprise CPU module 10, CPRI protocol module 20 and the external interface module 30 except CPRI protocol interface, described CPU module 10 sends Ethernet data frame When or after giving the CPRI protocol module 20, send the Ethernet data frame to the external interface module 30; or when or after the CPU module 10 receives the Ethernet data frame sent by the CPRI protocol module 20, forward the Ethernet data frame to the external interface module 30;

The external interface module 30 sends the Ethernet data frame to a capture device capable of capturing the Ethernet data frame.

The apparatus 300 for acquiring Ethernet data frames in this embodiment may be a baseband unit or a radio frequency unit. Its CPRI protocol module 20 is responsible for encapsulating and analyzing data frames including Ethernet data frames. When sending data, each functional module of baseband unit (radio frequency unit) sends the data that needs to send to the CPRI protocol module 20 on the baseband unit (radio frequency unit) (wherein the Ethernet data frame sent by CPU module 10 is exactly the present invention will capture send data), all data is encapsulated into CPRI protocol data frames according to the protocol format by the CPRI protocol module 20 and sent to the opposite end radio frequency unit (baseband unit); when receiving data, the CPRI protocol module 20 on the baseband unit (radio frequency unit) Analyze the CPRI protocol data frame received from the radio frequency unit (baseband unit) at the opposite end, and send the data analyzed to the corresponding baseband unit (radio frequency unit) functional module for processing (wherein the Ethernet data frame sent to the CPU module 10 Exactly the data that the present invention will capture).

The above-mentioned CPU module 10 may further include two sub-modules: a data transceiving sub-module and a data processing sub-module. Among them, the data transceiver sub-module is responsible for receiving and sending Ethernet data frames to complete the interaction with the operation and maintenance information of the radio frequency unit (baseband unit), and the data processing sub-module processes the received Ethernet data frames, and is to send The source of the Ethernet data frame.

In this embodiment, the CPRI protocol module 20 is responsible for extracting the Ethernet data frame in the CPRI protocol data frame, the CPU module 10 is responsible for forwarding the Ethernet data frame, and the external interface module 30 is responsible for sending the Ethernet data frame from the interface . When the baseband unit and the radio frequency unit perform data interaction, it is only necessary for either end to obtain the Ethernet data frame when sending or receiving data, and the CPU module sends the Ethernet data frame to the CPRI protocol module at the same time or after sending the Ethernet The network data frame is sent to the external interface module, or at the same time or after receiving the Ethernet data frame sent by the CPRI protocol module, the Ethernet data frame is forwarded to the external interface module.

Use an Ethernet connection line or a serial communication connection line to connect the Ethernet interface or the serial interface of the baseband unit (radio frequency unit) to a computer that has a capture device capable of capturing Ethernet data frames such as common Ethernet data frame capture software installed, You can use the Ethernet data frame capture software to capture and analyze the Ethernet data frames sent by the CPU module.

In this embodiment, the Ethernet data frame encapsulated in the CPRI protocol data frame interacting between the baseband unit and the radio frequency unit can be easily captured. Through this device, the content of the Ethernet data frame can be directly viewed or the commonly used Ethernet data frame can be used. Frame capture software captures and assists in analysis.

In one embodiment, the external interface module 30 is an Ethernet interface module or a serial communication interface module.

External interface module 30 is used for sending and receiving the Ethernet data frame that CPU module 10 sends, can be Ethernet interface module or serial communication interface module, wherein, Ethernet interface module is used for on the Ethernet interface of baseband unit (radio frequency unit) Send and receive Ethernet data frames, while the serial communication interface module is used to send and receive related serial communication protocol data frames on the serial communication interface. The above two interface modules are generally used for debugging, maintenance and other purposes, and are necessary modules on the baseband unit (radio frequency unit), without additional configuration, which can achieve the purpose of saving costs.

In the foregoing embodiments, the CPU module 10 is specifically used for:

While sending the Ethernet data frame to the CPRI protocol module 20, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module 30; or,

After sending the Ethernet data frame to the local CPRI protocol module 20, the Ethernet data frame is sent to the external interface module 30 for a second time.

When the data processing submodule of the CPU module 10 sends the Ethernet data frame to the CPRI protocol module 20 by the data transceiver submodule of the CPU module 10, the CPU data transceiver submodule copies an identical Ethernet data frame; the data transceiver submodule The copied Ethernet data frame is sent to the external interface module 30, and the external interface module 30 sends out from a corresponding interface.

Or after the data processing sub-module of CPU module 10 sends the Ethernet data frame to be sent to CPRI protocol module 20 through the data transceiving sub-module of CPU module 10, the data transceiving sub-module of CPU module 10 performs the second processing on the Ethernet data frame again. The second transmission, that is, to the external interface module 30, is sent by the external interface module 30 through the corresponding interface.

In the foregoing embodiments, the CPU module 10 is also used for:

While receiving the Ethernet data frame sent by the CPRI protocol module 20, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module 30; or,

After receiving the Ethernet data frame sent by the CPRI protocol module 20, the Ethernet data frame is sent to the external interface module 30 for a second time.

The CPRI protocol module 20 analyzes the received CPRI protocol data frame, and sends the Ethernet data frame therein to the data transceiver submodule of the CPU module 10; the data transceiver submodule receives the Ethernet data frame sent by the CPRI protocol module 20, While sending to the data processing submodule of the CPU module 10 in a normal manner, copy a copy of the same Ethernet data frame; Issued on the corresponding interface.

Or the data transceiver submodule receives the Ethernet data frame sent by the CPRI protocol module 20, and after sending to the data processing submodule of the CPU module 10 in a normal manner, the data transceiver submodule of the CPU module 10 performs the Ethernet data frame again. The second sending is sent to the external interface module, and the external interface module sends it from the corresponding interface.

Referring to FIG. 8 , an embodiment of the base station of the present invention is proposed, including a baseband unit 100 and a radio frequency unit 200. While the baseband unit 100 and the radio frequency unit 200 are exchanging CPRI protocol data frames, the baseband unit 100 or the radio frequency unit 200 transmits the CPRI Extract the Ethernet data frame in the protocol data frame, and send it to the capture device externally connected to the baseband unit 100 or the radio frequency unit 200 .

The aforementioned baseband unit 100 and/or radio frequency unit 200 is the device 300 for acquiring Ethernet data frames shown in FIG. 7 , and its working principle and structure are the same, and will not be repeated here.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related All technical fields are equally included in the scope of patent protection of the present invention.

Claims (7)

1. a method for obtaining Ethernet data frames, is characterized in that, comprising: While the baseband unit and the radio frequency unit are exchanging the CPRI protocol data frame, the CPU module of the baseband unit or the radio frequency unit sends the Ethernet data frame to the CPRI protocol module at the same time or after, and sends the Ethernet data frame to the CPRI protocol interface external interface module; or the CPRI protocol module of the baseband unit or the radio frequency unit extracts the Ethernet data frame in the CPRI protocol data frame and sends the extracted Ethernet data frame to the CPU module, and the CPU module receives the CPRI protocol Simultaneously or after the Ethernet data frame sent by the module, forward the Ethernet data frame to the external interface module; The external interface module sends the Ethernet data frame to an external capture device; Wherein, when the CPU module sends the Ethernet data frame to the CPRI protocol module or after, sending the Ethernet data frame to the external interface module includes: When the CPU module sends the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or, After the CPU module sends the Ethernet data frame to the local CPRI protocol module, it sends the Ethernet data frame to the external interface module for a second time. 2. The method according to claim 1, wherein, when the CPU module receives the Ethernet data frame sent by the CPRI protocol module or after, forwarding the Ethernet data frame to the external interface module comprises: When the CPU module receives the Ethernet data frame sent by the CPRI protocol module, it copies the Ethernet data frame, and sends the copied Ethernet data frame to the external interface module; or, After the CPU module receives the Ethernet data frame sent by the CPRI protocol module, it sends the Ethernet data frame to the external interface module for a second time. 3. A device for obtaining Ethernet data frames, comprising a CPU module, a public wireless interface CPRI protocol module and an external interface module except the CPRI protocol interface, is characterized in that, When or after the CPU module sends the Ethernet data frame to the CPRI protocol module, send the Ethernet data frame to the external interface module; or when the CPU module receives the Ethernet data frame sent by the CPRI protocol module or after, forwarding the Ethernet data frame the above Ethernet data frame to the external interface module; The external interface module sends the Ethernet data frame to a capture device capable of capturing the Ethernet data frame; Wherein, the CPU module is specifically used for: While sending the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or, After sending the Ethernet data frame to the local CPRI protocol module, send the Ethernet data frame to the external interface module for a second time. 4. The device according to claim 3, wherein the external interface module is an Ethernet interface module or a serial communication interface module. 5. The device according to claim 3 or 4, wherein the CPU module is also used for: While receiving the Ethernet data frame sent by the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or, After receiving the Ethernet data frame sent by the CPRI protocol module, sending the Ethernet data frame to the external interface module for a second time. 6. A base station, comprising a baseband unit and a radio frequency unit, characterized in that, when the baseband unit and the radio frequency unit are exchanging CPRI protocol data frames, the baseband unit or the radio frequency unit are used to send Ethernet data frames through the CPU module At the same time as or after the CPRI protocol module, send the Ethernet data frame to an external interface module except the CPRI protocol interface; or extract the Ethernet data frame in the CPRI protocol data frame through the CPRI protocol module and extract the extracted The Ethernet data frame is sent to the CPU module, and the CPU module forwards the Ethernet data frame to the external interface module while or after receiving the Ethernet data frame sent by the CPRI protocol module; sending the Ethernet data frame to an external capture device through the external interface module; Wherein, the CPU module is specifically used for: While sending the Ethernet data frame to the CPRI protocol module, copy the Ethernet data frame, and send the copied Ethernet data frame to the external interface module; or, After sending the Ethernet data frame to the local CPRI protocol module, send the Ethernet data frame to the external interface module for a second time. 7. The base station according to claim 6, wherein the baseband unit and/or the radio frequency unit is the device according to any one of claims 3 to 5.