CN101242593A - A topology scanning method and base station - Google Patents

Abstract

The embodiment of the present invention discloses a topology scanning method and a base station. The topology scanning method includes the following steps: according to the port number and slot position of the public general radio interface CPRI link received by a port of the baseband module BBU of the first standard number, and the port number and slot number of the CPRI link sent by the port determine the networking type of the remote radio module RRU connected to the port; according to the networking type and pre-configuration of the RRU connected to the port The CPRI port interconnection relationship table, returns the port number and slot number of the CPRI link to the port interconnected with the BBU of the first standard among the BBUs of the second standard interconnected with the BBU of the first standard through the CPRI port. The topology scanning method provided by the embodiment of the present invention enables the interconnected BBUs to identify the networking structure of the RRU and transmit the location information of the CPRI link in the scenario of a multi-mode base station formed by superimposing single boards of different standards.

Description

A topology scanning method and base station

technical field

The embodiments of the present invention relate to the field of communication technologies, and in particular to a topology scanning method and a base station.

Background technique

CPRI (Common Public Radio Interface, common public radio interface) standard interface is the interface specification between REC (Radio Equipment Controller, wireless equipment controller) and RE (Radio Equipment, wireless equipment) inside the wireless base station. The current DBS (Distributed Base Station, distributed base station) is divided into two major components: BBU (Base Band Unit, baseband module) and RRU (Remote Radio Unit, radio frequency remote module). BBU and RRU follow the CPRI interface standard. The BBU corresponds to the REC in the CPRI protocol, and the RRU corresponds to the RE in the CPRI protocol. According to actual application scenarios, RRUs can form a chain, star or ring.

In order for the BBU to learn the topology information of each CPRI link (or link), it is necessary for the BBU and the RRU to cooperate to complete the topology scanning function. Topology structure information includes head and tail positions of CPRI links, RRU position information, etc.

With the advancement of technology, multi-mode base stations have appeared, that is, base stations that can support two wireless standards at the same time, such as GSM (Global System for Mobile Communications, Global System for Mobile Communications) and UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System) System) base stations of two wireless standards are called GU dual-mode base stations.

In the process of realizing the present invention, the inventors found that the prior art has at least the following problems: the existing topology scanning method is only applicable to single-mode base stations, and cannot be applied to the application scenarios of multi-mode base stations.

Contents of the invention

Embodiments of the present invention provide a topology scanning method and a base station, so that in a multi-mode base station composed of BBUs of different standards, the BBU can identify the networking type of the RRU and transmit the positioning information of the CPRI link.

In order to achieve the above object, an embodiment of the present invention provides a method for topology scanning on the one hand, including the following steps: according to the port number and slot number of the public general radio interface CPRI link received by a port of the baseband module BBU of the first standard, And the port number and slot number of the CPRI link sent by the port determine the networking type of the remote radio module RRU connected to the port; according to the networking type of the RRU connected to the port and the pre-configured CPRI The port interconnection relationship table returns the port number and slot number of the CPRI link to the port interconnected with the BBU of the first standard among the BBUs of the second standard interconnected with the BBU of the first standard through the CPRI port.

On the other hand, an embodiment of the present invention also provides a base station, including a baseband module of the first standard, a remote radio module RRU and a baseband module of the second standard, the baseband module of the first standard communicates with the baseband of the second standard through a CPRI port Module interconnection, the baseband module of the first standard is used for the port number and slot number of the public general radio interface CPRI link received by a port of the baseband module of the first standard, and the CPRI link sent by the port The port number and slot number determine the networking type of the RRU connected to the port, and according to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection table, send the information to the second standard baseband The port interconnected with the baseband module of the first standard in the module returns the port number and slot number of the CPRI link; the baseband module of the second standard is used to receive the port of the CPRI link returned by the baseband module of the first standard number and slot number.

Compared with the prior art, the embodiment of the present invention has the following advantages: through the embodiment of the present invention, the first standard BBU receives the port number and slot number of the CPRI link according to the port of the first standard BBU, and the port sends The port number and slot number of the CPRI link determine the networking type of the RRU connected to the port. According to the networking type of the RRU and the pre-configured CPRI port interconnection table, the The port of the BBU of the second standard connected to the BBU of the first standard returns the port number and slot number of the CPRI link. Therefore, in a multi-mode base station composed of BBUs of different standards, the BBU can identify the networking type of the RRU, and transmit CPRI positioning information to the BBU of another standard.

Description of drawings

Fig. 1 is the flowchart of the method for topology scanning of the embodiment of the present invention;

2 is a schematic diagram of transmission of CPRI link positioning information according to an embodiment of the present invention;

FIG. 3 is a structural diagram of a base station according to an embodiment of the present invention.

Detailed ways

In order for the BBU to learn the topology information of each CPRI link (or link), it is necessary for the BBU and the RRU to cooperate to complete the topology scanning function. Topology structure information includes head and tail positions of CPRI links, RRU position information, etc. To this end, the sub-channel 16 defined by the manufacturer is defined:

subchannel number Use of sub-channels Matrix number Xs＝0 Xs=1 Xs=2 Xs=3 0 Sync(Synchronisation, synchronization)&timing Sync byte K28.5 HFN (HardwareFrameNumber, hardware frame number) BFN (NodeBFrame Number, node B frame number)-low BFN-high 1 slow C&M (Control and Maintenance, control and maintenance) slow C&M slow C&M slow C&M slow C&M 2 L1 inband prot. (Layer 1 inbandprotocol, Layer 1 inband protocol) Version startup (start) L1-reset (reset)-LOS (Lost OfSignal, signal loss)... Pointer (pointer) p 3 reserve reserve reserve reserve reserve 15 reserve reserve reserve reserve reserve 16 vendor specific (vendor definition) Port ID/Slot ID vendor specific vendor specific vendor specific ... ... ... ... ... … p-1 vendor specific reserved of vs reserved of vs reserved of vs reserved of vs Pointer-p faster C&M faster C&M faster C&M faster C&M faster C&M

... ... ... ... ... ... 63 faster C&M faster C&M faster C&M faster C&M faster C&M

in:

Port ID is the port number of the CPRI link, occupying #Z.16.0 bytes, and the lower 4Bit of Z.16.0 is used to transmit the port number of the CPRI link in the BBU. The 4 bits of Port ID can be used to represent 16 port numbers. The definition of the Port ID in the vendorspecfic (vendor definition) area is shown in Table 1.

Table 1

Slot ID is the slot number of the CPRI link, occupying #Z.16.1 bytes, from MSB (Most Significant Bit, most significant bit) to LSB (Least Significant Bit, least significant bit) respectively corresponding to b7~b0 of Z.16.1. The Slot ID field is filled in by the BBU and forwarded by the RRU in the CPRI link. The definition of the Slot ID in the vendor specific area is shown in Table 2.

Table 2

In each embodiment of the present invention, the transfer process of the port number Port ID of the CPRI link and the slot information Slot ID is as follows:

1. When the BBU transmits the CPRI data frame to the RRU, it transmits the port number Port ID and slot information Slot ID of the CPRI link in the control word.

2. When the RRU is an intermediate node of the CPRI link, forward the received Port ID and Slot ID to the next-level RRU.

3. When the RRU is the last node of the CPRI link, the received Port ID and Slot ID are directly returned to the upper-level RRU.

4. Each level of RRU forwards the Port ID and Slot ID returned by the lower level to the upper level RRU until the Port ID and Slot ID are sent back to the BBU. In the case of a chain or star network, the Port ID and Slot ID received by the BBU on the CPRI port are consistent with the Port ID and Slot ID sent by the BBU on the CPRI port; in the case of a ring network , the Port ID and Slot ID received by the BBU on the CPRI port are inconsistent with the Port ID and Slot ID sent by the BBU on the CPRI port. The Port ID and Slot ID received by the BBU on the CPRI port are for this ring link Port ID and Slot ID on another CPRI port.

The embodiment of the present invention provides a topology scanning method, which can be applied to the scene of a multi-mode base station composed of single boards of various standards. A solution for a multi-mode base station is to form a multi-mode base station by superimposing single boards of different standards , boards of different standards are interconnected through CPRI. The topology scanning method proposed by the embodiment of the present invention is applicable to GSM, UMTS, CDMA (Code Division Multiple Access, Code Division Multiple Access), WIMAX (World Interoperability for Microwave Access, Global Microwave Access Interoperability), LTE (Long time Evolution, long-term Evolution) and other single boards of various standards are combined in pairs or more than two to form a multi-mode base station, such as a multi-mode base station composed of GSM and UMTS, a multi-mode base station composed of UMTS and CDMA, and a multi-mode base station composed of UMTS and A multi-mode base station composed of two standards of LTE and so on.

The embodiment of the present invention is described by taking a multi-mode base station composed of single boards of GSM and UMTS as an example. The topology scanning method proposed by the embodiment of the present invention is not only applicable to distributed base stations, but also applicable to macro base stations. Any base station whose baseband module and radio frequency module are interconnected by CPRI can use the method proposed by the embodiment of the present invention.

As shown in Figure 1, it is a flowchart of a method for topology scanning in an embodiment of the present invention, specifically comprising the following steps:

Step S101, the BBU of the first standard determines the port connected to the port according to the port number and slot number of the CPRI link received by the port of the BBU of the first standard, and the port number and slot number of the CPRI link sent by the port. The networking type of the RRU.

When the port number and the slot number of the CPRI link received by the port of the BBU of the first standard are consistent with the port number and the slot number of the CPRI link sent by the port, the BBU of the first standard determines the The networking mode of RRU is chain or star.

When the port number and the slot number of the CPRI link received by the port of the BBU of the first standard are inconsistent with the port number and the slot number of the CPRI link sent by the port, the BBU of the first standard is determined to be compatible with the port The networking type of the connected RRUs is a ring type.

Step S102, the BBU of the first standard is interconnected with the BBU of the first standard among the BBUs of the second standard interconnected with the BBU of the first standard through the CPRI port according to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection relationship table The port returns the port number and slot number of the CPRI link.

The BBUs of the first standard and the BBUs of the second standard are interconnected through CPRI ports. The CPRI port interconnection relationship table can be set according to the physical connection of the BBUs of the first standard and the BBUs of the second standard through the CPRI ports, and the interconnection relationship table can be pre-configured. In the BBU of the first standard, for example, the user or the operation and maintenance personnel may preset the CPRI port interconnection relationship table in the form of software or hardware according to the physical connection between the BBU of the first standard and the BBU of the second standard through the CPRI port. Configured in the system software or control software of the first standard BBU through operation and maintenance operations, the system software or control software can further configure the CPRI port interconnection relationship table in the first standard BBU to control the FPGA of the CPRI port connected to the RRU in the chip.

When the networking type of the RRU is chain or star, the BBU of the first standard searches the CPRI port interconnection relationship table, determines the port that is interconnected with the BBU of the second standard in the BBU of the first standard corresponding to the port, and then uses the found The port number and slot number of the CPRI link received by the port of the BBU of the first standard connected to the BBU of the second standard are directly returned to the port of the BBU of the second standard connected to the BBU of the first standard.

When the networking type of the RRU is ring type, the BBU of the first standard searches the CPRI port interconnection relationship table, and determines the two CPRI ports interconnected with the BBU of the second standard in the BBU of the first standard corresponding to the two ports of the BBU of the first standard, Among them, the networking type of the RRU connected to the two ports of the BBU of the first standard is a ring type, and then exchange the port numbers and slots of the CPRI links received by the two CPRI ports interconnected with the BBU of the second standard in the BBU of the first standard number, and return the port number and slot number of the switched CPRI link to the two ports interconnected with the BBU of the first standard in the BBU of the second standard.

As shown in Figure 2, it is a schematic diagram of transmission of CPRI link positioning information in the embodiment of the present invention. The embodiment of the present invention takes a multimode base station supporting two wireless standards of GSM and UMTS as an example, and the CPRI interface function of the BBU can be implemented by an FPGA (Field Programmable Gate Array, Field Programmable Gate Array) or other programmable devices. In order to simplify the description, the embodiment of the present invention takes FPGA as an example for illustration, and the baseband modules of different standards in the embodiment of the present invention are collectively referred to as BBU, for example: GSM BBU. The topology scanning method proposed in the embodiment of the present invention is also applicable to the scenario where the baseband module is a single board, and no distinction is made here.

In the embodiment of the present invention, it is assumed that the GSM BBU is connected to the RRU through the CPRI interface, and is interconnected with the UMTS BBU through the CPRI interface, thereby realizing a stacked multi-mode base station. The CPRI link slot number and CPRI link port number in the embodiment of the present invention are described with the numbers in Figure 3, but the CPRI link slot number and CPRI link port number are not limited to this, and can also be used according to actual scenarios Changes occur, for example, the slot number of the GSM BBU is 6, and the slot number of the UMTS BBU is 7.

First, according to the physical connection of BBU interconnection, configure the CPRI interconnection relationship of different standard BBUs to the multi-mode base station software, and the multi-mode base station software configures this CPRI interconnection relationship to the FPGA of the GSM BBU connected to the RRU through the CPRI interface. For example: the CPRI interconnection relationship is shown in Table 1:

Table 1

GSM BBU port number (Port ID) Whether it is used for interconnection with BBU of another standard The port number (PortID) that needs to forward CPRI link data when it is used to interconnect with BBUs of other standards 0 yes 3 1 yes 4 2 yes 5 3 no invalid 4 no invalid 5 no invalid

In addition, the software can read the potential signal of the backplane hardware to obtain the slot information SlotID of the board, so the Slot ID does not need to be configured by the user.

In the case of RRU chain networking, the BBU sends and receives the Port ID and Slot ID on the CPRI port that is not connected to the BBU. When the FPGA finds that the Port ID and Slot ID received on a certain CPRI port are consistent with the Port ID and Slot ID sent by the CPRI port, it can determine that the RRUs connected to this CPRI port are networked in chain or star form. Look up Table 1, if there is a corresponding interconnection port for this CPRI port, then directly return the Port ID and Slot ID received in the corresponding interconnection port to the interconnection port of another standard BBU connected to the interconnection port.

Taking Figure 2 as an example, the GSM BBU sends Slot ID=6 and Port ID=5 at Port5. According to the transfer process of the port number Port ID and slot information Slot ID of the CPRI link mentioned above, the RRU link is routed through the RRU link. Pass, and finally return to Port5 of the GSM BBU. Because Slot ID = 6 is the slot number of the GSM BBU, the FPGA of the GSMBBU finds that the Port ID and Slot ID received on Poryt5 are consistent with the Port ID and Slot ID sent by the GSM BBU on this port through comparison, so it can be determined that it is the same as Port5 The connected RRU links are chain or star. Look up Table 1 and find that Port5 corresponds to Port2. Since Port2 of the GSM BBU is interconnected with Port3 of the UMTSBBU, the Slot ID=7 and PortID=3 sent by the UMTS BBU on Port3 of the UMTS BBU, so the GSM BBU will directly receive the Port ID=3 and Slot ID=7 received at Port2 Return to Port3 of the UMTS BBU. Since the Slot ID and Port ID received by the UMTS BBU on Port3 are consistent with the Port ID and Slot ID sent by the UMTS BBU on Port3, the UMTS BBU determines that the RRU link connected to Port3 is a chain or a star.

In the case of RRU ring networking, the BBU sends and collects Port ID and SlotID on the CPRI port that is not connected to the BBU. When the FPGA finds that the Port ID and Slot ID received at a certain CPRI port are inconsistent with the Port ID and Slot ID sent by the CPRI port, it can determine that the RRU link connected to this CPRI port is a ring type, and the ring type link The port number and slot information of the port at the other end are the Port ID and Slot ID received by the CPRI port. In addition, another port in the ring network can also receive similar information and make similar judgments. FPGA lookup table 1, if there are corresponding interconnection ports for these two ports, and there are also two corresponding interconnection ports, then exchange the Port ID and Slot ID received in the corresponding two interconnection ports.

Taking Figure 2 as an example, the GSM BBU sends SlotID=6 and PortID=3 at Port3. According to the transfer process of the port number Port ID and slot information Slot ID of the CPRI link mentioned above, it is transmitted through the RRU link level by level. Finally, this information is passed to Port4 of the GSM BBU, and the SlotID=6 and PortID=4 sent by the GSM BBU at Port4 will be passed to Port3 of the GSM BBU. The FPGA of the GSM BBU finds that the Port ID and Slot received by Port3 and Port4 are compared. The ID is inconsistent with the Port ID and Slot ID sent by the GSM BBU on Port3 and Port4, so it can be determined that the RRU link connected to Port3 and Port4 is a ring type, and the first and last port information of this ring type link can be obtained. Look up Table 1 and find that Port3 corresponds to Port0, and Port4 corresponds to Port1. Port0 and Port1 are used to interconnect with the UMTS BBU. Therefore, SlotID=7 and Port ID=5 received on Port0 are forwarded to Port1, and Port1 is received. Slot ID=7, Port ID=4 are forwarded to Port0. Because UMTS BBU sends SlotID=7, ProtID=5 on its Port5, and sends SlotID=7, PortID=4 on its Port4, and Port5 of UMTS BBU is interconnected with Port0 of GSM BBU, GSM BBU will receive Slot ID = 7, Port ID = 4 forwarded to Port0, so the information received by the UMTS BBU on Port5 is SlotID = 7, PortID = 4; Port4 of the UMTS BBU is connected to Port1 of the GSM BBU, and the GSM BBU receives the information on Port0 The received Slot ID=7 and Port ID=5 are forwarded to Port1, so the information received by the UMTS BBU on Port4 is SlotID=7 and PortID=5. The Port ID and Slot ID received by the UMTS BBU at Port4 and Port5 are inconsistent with the PortID and Slot ID sent by the UMTS BBU at Port4 and Port5. Therefore, the UMTS BBU connected to the GMS BBU can also determine that the RRU link connecting Port4 and Port5 is Ring type, and the first and last port information of this ring type link can be obtained.

In the embodiment of the present invention, a multi-mode base station is formed by stacking boards of different standards, and the boards of different standards are interconnected through CPRI as an example. The topology scanning method proposed in the embodiment of the present invention enables the interconnected BBUs in this scenario to be able to Identify the networking structure of the RRU, and be able to transmit the location information of the CPRI link (the port number and the slot number of the CPRI link).

As shown in FIG. 3 , it is a structural diagram of a base station according to an embodiment of the present invention, including: a first-standard baseband module 31, an RRU 32 and a second-standard baseband module 33, and the first-standard baseband module 31 communicates with the second-standard baseband module 33 through a CPRI port interconnected,

The first standard baseband module 31 is used to determine the port number and the slot number of the CPRI link received according to the port of the first standard baseband module 31, and the port number and the slot number of the CPRI link sent by the port. The networking type of the RRU32 connected to the above port, and according to the networking type of the RRU32 connected to the port and the pre-configured CPRI port interconnection relationship table, to the second standard baseband module 33 and the first standard baseband module 31 The port interconnected Return the port number and slot number of the CPRI link;

The baseband module 32 of the second standard is configured to receive the port number and the slot number of the CPRI link returned by the baseband module 31 of the first standard.

Wherein, the base station also includes: a configuration module 33, which is used to set the baseband module 31 of the first standard and the baseband module of the second standard according to the physical connection of the baseband module 31 of the first standard and the baseband module 33 of the second standard through the CPRI port interconnection 33, and configure the CPRI port interconnection table in the baseband module 31 of the first standard.

Wherein, the first standard baseband module 31 includes: a chain type determination submodule 311, which is used for when the port number and the slot number of the CPRI link received by the port of the first standard baseband module 31 and the CPRI link sent by the port When the port number is consistent with the slot number, it is determined that the networking type of the RRU connected to the port is chain or star;

The search sub-module 312 is used to search the CPRI port interconnection table configured by the configuration module 33, and determine the port interconnected with the second standard baseband module 33 in the first standard baseband module 31 corresponding to the port;

Directly return to the submodule 313, for the port number and the slot number of the CPRI link received by the port that is interconnected with the second standard baseband module 33 in the first standard baseband module 31 found by the search submodule 312 and the slot number directly return to the second A port interconnected with the baseband module 31 of the first standard in the baseband module 33 of the standard.

Wherein, the baseband module 31 of the first standard also includes: a ring type determination submodule 314, which is used for when the port number and the slot number of the CPRI link received by the port of the baseband module 31 of the first standard are connected with the CPRI link sent by the port When the port number and the slot number are inconsistent, determine that the networking type of the RRU32 connected to the port is a ring type, and notify the search submodule 312 to search the CPRI port interconnection table configured by the configuration module 33 to determine the first standard baseband module The two ports of 31 correspond to the two CPRI ports interconnected with the baseband module 33 of the first standard in the baseband module 31 of the first standard, wherein, the networking type of the RRU connected to the two ports of the baseband module 31 of the first standard is a ring type ;

The exchange return sub-module 315 is used to exchange the port number and the slot number of the CPRI link received by the two CPRI ports interconnected with the baseband module 33 of the first standard in the baseband module 31 of the first standard and the slot number of the CPRI link after the exchange The port number and the slot number are returned to the two ports interconnected with the baseband module 31 of the first standard in the baseband module 33 of the second standard.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is a better implementation Way. Based on this understanding, the essence of the technical solution of the present invention or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions to make a A computer device (which may be a personal computer, a server, or a network device, etc.) executes the methods described in various embodiments of the present invention.

The above disclosures are only a few specific embodiments of the present invention, however, the present invention is not limited thereto, and any changes conceivable by those skilled in the art shall fall within the protection scope of the present invention.

Claims (10)

1. A method for topology scanning, comprising the following steps: According to the port number and the slot number of the public universal radio interface CPRI link received by a port of the baseband module BBU of the first standard, and the port number and the slot number of the CPRI link sent by the port determine the port connected to the port Networking type of remote radio module RRU; According to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection relationship table, to the port interconnected with the first standard BBU among the second standard BBUs interconnected with the first standard BBU through the CPRI port Returns the port number and slot number of the CPRI link. 2. The method for topology scanning according to claim 1, further comprising: According to the physical connection of the BBU of the first standard and the BBU of the second standard interconnected through the CPRI port, the CPRI port interconnection relationship table is set, and the CPRI port interconnection relationship table is configured in the BBU of the first standard . 3. The method for topology scanning according to claim 1, characterized in that the port number and slot number of the CPRI link received by a port of the BBU according to the first standard, and the port number and slot number of the CPRI link sent by the port The port number and the slot number determine that the networking type of the RRU connected to the port includes: When the port number and slot number of the CPRI link received by the port of the BBU of the first standard are consistent with the port number and slot number of the CPRI link sent by the port, determine the group of RRUs connected to the port The network type is chain or star. 4. The method for topology scanning according to claim 3, characterized in that, according to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection relationship table, to the first standard BBU through The port number and slot number of the CPRI link returned by the port interconnected with the first standard BBU in the second standard BBU interconnected with the CPRI port include: Searching the CPRI port interconnection relationship table, and determining the CPRI port interconnected with the second standard BBU in the first standard BBU corresponding to the port; Returning the port number and slot number of the CPRI link received by the CPRI port interconnected with the BBU of the second standard in the BBU of the first standard to the port of the BBU of the second standard connected with the BBU of the first standard. 5. The method for topology scanning according to claim 1, characterized in that the port number and slot number of the CPRI link received by a port of the BBU according to the first standard, and the port number and slot number of the CPRI link sent by the port The port number and the slot number determine that the networking type of the RRU connected to the port includes: When the port number and slot number of the CPRI link received by the port of the BBU of the first standard are inconsistent with the port number and slot number of the CPRI link sent by the port, determine the group of RRUs connected to the port The net type is ring type. 6. The method of topology scanning according to claim 5, characterized in that, according to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection relationship table, to the first standard BBU through The port number and slot number of the CPRI link returned by the port interconnected with the first standard BBU in the second standard BBU interconnected with the CPRI port include: Search the CPRI port interconnection relationship table, and determine the two CPRI ports interconnected with the second standard BBU in the first standard BBU corresponding to the two ports of the first standard BBU, wherein the first standard The networking type of the RRU connected to the two ports of the BBU is a ring type; Exchange the port numbers and slot numbers of the CPRI links received by the two CPRI ports interconnected with the BBU of the second standard in the BBU of the first standard, and return the port numbers and slot numbers of the exchanged CPRI links to Two ports interconnected with the BBU of the first standard in the BBU of the second standard. 7. A base station, characterized in that it includes a baseband module of the first standard, a remote radio module RRU and a baseband module of the second standard, the baseband module of the first standard is interconnected with the baseband module of the second standard through a CPRI port, The baseband module of the first standard is used for the port number and slot number of the public general radio interface CPRI link received by a port of the baseband module of the first standard, and the port number of the CPRI link sent by the port and the slot number to determine the networking type of the RRU connected to the port, and according to the networking type of the RRU connected to the port and the pre-configured CPRI port interconnection relationship table, to the second standard baseband module and The ports interconnected by the baseband modules of the first standard return the port number and the slot number of the CPRI link; The baseband module of the second standard is configured to receive the port number and slot number of the CPRI link returned by the baseband module of the first standard. 8. The base station according to claim 7, further comprising: A configuration module, configured to set the CPRI port interconnection relationship table according to the physical connection of the first standard baseband module and the second standard baseband module through the CPRI port interconnection, and configure the CPRI port interconnection relationship table in In the baseband module of the first standard. 9. The base station according to claim 7, wherein the baseband module of the first standard comprises: The chain type determination submodule is used to determine when the port number and the slot number of the CPRI link received by the port of the baseband module of the first standard are consistent with the port number and the slot number of the CPRI link sent by the port The networking type of the RRU connected to the port is chain or star; The search sub-module is used to search the CPRI port interconnection table configured by the configuration module, and determine the port interconnected with the second standard baseband module in the first standard baseband module corresponding to the port; Direct return submodule, used to return the port number and slot number of the CPRI link received by the port interconnected with the second standard baseband module in the baseband module of the first standard found by the search submodule to the A port interconnected with the baseband module of the first standard in the baseband module of the second standard. 10. The base station according to claim 9, wherein the baseband module of the first standard further comprises: A ring-type determining submodule, configured to determine when the port number and the slot number of the CPRI link received by the port of the baseband module of the first standard are inconsistent with the port number and the slot number of the CPRI link sent by the port The networking type of the RRU connected to the port is a ring type, and the search submodule is notified to search the CPRI port interconnection table configured by the configuration module, and determine the corresponding two ports of the first standard baseband module. Two CPRI ports interconnected with the baseband module of the second standard in the baseband module of the first standard, wherein, the networking type of the RRUs connected to the two ports of the baseband module of the first standard is a ring type; The exchange return submodule is used to exchange the port number and slot number of the CPRI link received by the two CPRI ports interconnected with the second standard baseband module in the baseband module of the first standard, and the exchanged CPRI link The port number and the slot number are returned to the two ports interconnected with the baseband module of the first standard in the baseband module of the second standard.

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