CN101242593B - 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 general public 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

The CPRI (CommonPublicRadioInterface, common public radio interface) standard interface is an interface specification between REC (RadioEquipmentController, radio equipment controller) and RE (RadioEquipment, radio equipment) inside the radio base station. The current DBS (DistributedBaseStation, distributed base station) is divided into two major components: BBU (BaseBandUnit, baseband module) and RRU (RemoteRadioUnit, radio remote module). The 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 emerged, that is, base stations that can support two wireless standards at the same time, such as those that can simultaneously support two wireless standards: GSM (Global System for Mobile Communications, Global System for Mobile Communications) and UMTS (Universal Mobile Telecommunications System, Universal Mobile Communications System). The base station is called a GU dual-mode base station.

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 general public 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, specifically including: when the port of the first standard BBU receives the CPRI link When the port number and slot number of the CPRI link sent by the port are consistent with the port number and slot number of the CPRI link sent by the port, it is determined that the networking type of the RRU connected to the port is chain or star; when the first When the port number and slot number of the CPRI link received by the port of the standard BBU are inconsistent with the port number and slot number of the CPRI link sent by the port, it is determined that the networking type of the RRU connected to the port is ring ; 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 BBU interconnected with the first standard BBU interconnected with the first standard BBU through the CPRI port Port returns the port number and slot number of the CPRI link.

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 general public 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 the slot number determine the networking type of the RRU connected to the port, specifically including: 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 sent with the port When the port number of the CPRI link is consistent with the slot number, it is determined that the networking type of the RRU connected to the port is chain or star; when the port of the CPRI link received by the port of the first standard baseband module When the port number and the slot number are inconsistent with the port number and the slot number of the CPRI link sent by the port, it is determined that the networking type of the RRU connected to the port is ring type; and according to the RRU connected to the port The networking type and the pre-configured CPRI port interconnection relationship table return the port number and slot number of the CPRI link to the port interconnected with the first standard baseband module in the second standard baseband module; the second standard The baseband module is configured to receive the port number and slot number of the CPRI link returned by the baseband module of the first standard.

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 Subchannel usage Matrix number Xs=0 Xs=1 Xs=2 Xs=3 0 Sync (Synchronisation, synchronization) & timing SyncbyteK28.5 HFN (HardwareFrameNumber, hardware frame number) BFN (NodeBFrameNumber, node B frame number)-low BFN-high 1 slowC&M (ControlandMaintenance, control and maintenance) slowC&M slowC&M slowC&M slowC&M 2 L1inbandprot. (Layer1inbandprotocol, layer 1 inband protocol) Version startup (start) L1-reset (reset)-LOS (LostOfSignal, signal loss)... Pointer (pointer) p 3 reserve reserve reserve reserve reserve 15 reserve reserve reserve reserve reserve 16 vendorspecific (vendor definition) PortID/SlotID vendor specific vendor specific vendor specific … … … … … … p-1 vendor specific reserved of vs reserved of vs reserved of vs reserved of vs Pointer-p fasterC&M fasterC&M fasterC&M fasterC&M fasterC&M

… … … … … … 63 fasterC&M fasterC&M fasterC&M fasterC&M fasterC&M

in:

PortID 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 PortID can be used to represent 16 port numbers. The definition of PortID in the vendorspecfic (vendor definition) area is shown in Table 1.

Table 1

SlotID is the slot number of the CPRI link, occupying #Z.16.1 bytes, from MSB (MostSignificantBit, most significant bit) to LSB (LeastSignificantBit, least significant bit) respectively corresponding to b7~b0 of Z.16.1. The SlotID field is filled in by the BBU and forwarded by the RRU in the CPRI link. The definition of SlotID in the vendorspecific area is shown in Table 2.

Table 2

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

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

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

3. When the RRU is the final node of the CPRI link, the received PortID and SlotID are directly returned to the upper-level RRU.

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

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 single-mode devices of various systems such as GSM, UMTS, CDMA (Code Division Multiple Access, Code Division Multiple Access), WIMAX (World Interoperability for Microwave Access, Global Interoperability for Microwave Access), LTE (Longtime Evolution, long-term evolution), etc. A multi-mode base station composed of two or more boards, 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 LTE base station etc.

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 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 are exchanged 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 device implementations. In order to simplify the description, the embodiment of the present invention takes FPGA as an example for description, and the baseband modules of different standards in the embodiment of the present invention are collectively referred to as BBU, for example: GSMBBU. 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 GSMBBU is connected to the RRU through the CPRI interface, and is interconnected with the UMTSBBU through the CPRI interface, so as to realize 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 GSMBBU is 6, and the slot number of UMTSBBU is 7.

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

Table 1

GSMBBU port number (PortID) Whether it is used to interconnect with BBUs of other standards 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 SlotID does not need to be configured by the user.

In the case of RRU chain networking, the BBU sends and receives PortID and SlotID on the CPRI port that is not connected to the BBU. When the FPGA finds that the PortID and SlotID received on a certain CPRI port are consistent with the PortID and SlotID 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 PortID and SlotID 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 GSMBBU sends SlotID=6 and PortID=5 at Port5. According to the transfer process of the port number PortID of the CPRI link and the slot information SlotID described above, the RRU link is transmitted level by level, and finally returned to the Port 5 of the GSMBBU. Because SlotID=6 is the slot number of GSMBBU, the FPGA of GSMBBU finds that the PortID and SlotID received on Poryt5 are consistent with the PortID and SlotID sent by GSMBBU on this port through comparison, so it can be determined that the RRU link connected to Port5 is a chain type or star. Look up Table 1 and find that Port5 corresponds to Port2. Since Port2 of the GSMBBU is interconnected with Port3 of the UMTSBBU, the UMTSBBU sends SlotID=7 and PortID=3 on the Port3 of the UMTSBBU, so the GSMBBU directly returns the PortID=3 and SlotID=7 received at Port2 to Port3 of the UMTSBBU. Since the SlotID and PortID received by the UMTSBBU on Port3 are consistent with the PortID and SlotID sent by the UMTSBBU on Port3, the UMTSBBU 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 the PortID and SlotID on the CPRI port that is not connected to the BBU. When the FPGA finds that the PortID and SlotID received at a certain CPRI port are inconsistent with the PortID and SlotID sent by the CPRI port, it can determine that the RRU link connected to this CPRI port is a ring type, and the port at the other end of the ring type link The port number and slot information are the PortID and SlotID 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 is a corresponding interconnection port for these two ports, and the corresponding interconnection ports are also two, exchange the PortID and SlotID received in the corresponding two interconnection ports.

Taking Figure 2 as an example, the GSMBBU sends SlotID=6 and PortID=3 at Port3. According to the transfer process of the port number PortID of the CPRI link and the slot information SlotID, it is transferred through the RRU link level by level, and finally this The information is passed to Port4 of the GSMBBU, and the SlotID=6 and PortID=4 sent by the GSMBBU at Port4 will be passed to Port3 of the GSMBBU. The FPGA of the GSMBBU finds that the PortID and SlotID received by Port3 and Port4 are the same as those received by the GSMBBU on Port3 and Port4. The sent PortID and SlotID are inconsistent, so it can be determined that the RRU link connecting Port3 and Port4 is a ring, and the first and last port information of the ring link can be obtained. Look up Table 1 and find that Port3 corresponds to Port0, Port4 corresponds to Port1, and Port0 and Port1 are used to interconnect with UMTSBBU, so the SlotID=7 and PortID=5 received on Port0 are forwarded to Port1, and the SlotID received on Port1 is forwarded =7, PortID=4 forwarded to Port0. Because UMTSBBU sends SlotID=7, ProtID=5 on its Port5, and sends SlotID=7, PortID=4 on its Port4, and Port5 of UMTSBBU is interconnected with Port0 of GSMBBU, GSMBBU receives SlotID=7 on Port1 , PortID=4 is forwarded to Port0, so the information received by UMTSBBU on Port5 is SlotID=7, PortID=4; Port4 of UMTSBBU is connected to Port1 of GSMBBU, and GSMBBU forwards SlotID=7 and PortID=5 received on Port0 to Port1, so the information received by the UMTSBBU on Port4 is SlotID=7, PortID=5. The PortID and SlotID received by the UMTSBBU at Port4 and Port5 are inconsistent with the PortID and SlotID sent by the UMTSBBU at Port4 and Port5. Therefore, the UMTSBBU connected to the GMSBBU can also determine that the RRU link connected to Port4 and Port5 is a ring, and can obtain this The first and last port information of the ring link.

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 (8)

1. the method for a topologically sweeping is characterized in that, may further comprise the steps:

The port numbers and the slot number of the common public radio interface CPRI link that receives according to port of the first standard baseband module BBU, and the networking pattern of the port numbers of the CPRI link of described port transmission and the definite radio frequency remoto module RRU that is connected with described port of slot number, specifically comprise: when the port numbers of the CPRI link that the port numbers of the CPRI link that receives when the port of the described first standard BBU and slot number and described port send and slot number were consistent, the networking pattern of definite RRU that is connected with described port was a chain or star-like; When the port numbers of the CPRI link that the port numbers of the CPRI link that receives when the port of the described first standard BBU and slot number and described port send and slot number were inconsistent, the networking pattern of definite RRU that is connected with described port was ring-like;

According to the networking pattern of the RRU that is connected with described port and the pre-configured port interconnected relation table of CPRI, to the described first standard BBU second standard BBU port interconnected by CPRI in return the port numbers and the slot number of CPRI link with the interconnected port of the described first standard BBU.

2. the method for topologically sweeping according to claim 1 is characterized in that, also comprises:

Pass through the port interconnected physical connection of CPRI according to described first standard BBU and the described second standard BBU, the port interconnected relation table of described CPRI is set, and the port interconnected relation table of described CPRI is configured among the described first standard BBU.

3. the method for topologically sweeping according to claim 1, it is characterized in that, the networking pattern of the RRU that described basis is connected with described port and the pre-configured port interconnected relation table of CPRI, to the described first standard BBU second standard BBU port interconnected by CPRI in return the CPRI link with the interconnected port of the described first standard BBU port numbers and slot number comprise:

Search the port interconnected relation table of described CPRI, determine among the described first standard BBU of described port correspondence and the interconnected CPRI port of the described second standard BBU;

The port numbers of the CPRI link that receives with the interconnected CPRI port of the second standard BBU among the described first standard BBU and slot number are returned among the described second standard BBU and the interconnected port of the described first standard BBU.

4. the method for topologically sweeping according to claim 1, it is characterized in that, the networking pattern of the RRU that described basis is connected with described port and the pre-configured port interconnected relation table of CPRI, to the described first standard BBU second standard BBU port interconnected by CPRI in return the CPRI link with the interconnected port of the described first standard BBU port numbers and slot number comprise:

Search the port interconnected relation table of described CPRI, determine among the described first standard BBU of two port correspondences of the described first standard BBU and two interconnected CPRI ports of the described second standard BBU, wherein, the networking pattern of the RRU of two of the described first standard BBU port connections is ring-like;

Exchange among the described first standard BBU port numbers and the slot number of the CPRI link that receives with interconnected two the CPRI ports of the described second standard BBU, the port numbers of the CPRI link after the exchange and slot number are returned among the described second standard BBU and two interconnected ports of the described first standard BBU.

5. a base station is characterized in that, comprises the first standard baseband module, radio frequency remoto module RRU and the second standard baseband module, and the described first standard baseband module is interconnected by common public radio interface CPRI ports and the described second standard baseband module,

The described first standard baseband module, the port numbers and the slot number that are used for the common public radio interface CPRI link that port according to the described first standard baseband module receives, and the networking pattern of the port numbers of the CPRI link of described port transmission and the definite RRU that is connected with described port of slot number, specifically comprise: when the port numbers of the CPRI link that the port numbers of the CPRI link that receives when the port of the described first standard baseband module and slot number and described port send and slot number were consistent, the networking pattern of definite RRU that is connected with described port was a chain or star-like; When the port numbers of the CPRI link that the port numbers of the CPRI link that receives when the port of the described first standard baseband module and slot number and described port send and slot number were inconsistent, the networking pattern of definite RRU that is connected with described port was ring-like; And, in the described second standard baseband module, return the port numbers and the slot number of CPRI link with the interconnected port of the described first standard baseband module according to the networking pattern of the RRU that is connected with described port and the pre-configured port interconnected relation table of CPRI;

The described second standard baseband module is used to receive the port numbers and the slot number of the CPRI link that the described first standard baseband module returns.

6. as base station as described in the claim 5, it is characterized in that, also comprise:

Configuration module, be used for passing through the port interconnected physical connection of CPRI according to described first standard baseband module and the described second standard baseband module, the port interconnected relation table of described CPRI is set, and the port interconnected relation table of described CPRI is configured in the described first standard baseband module.

7. as base station as described in the claim 6, it is characterized in that the described first standard baseband module comprises:

Chain is determined submodule, be used for the port numbers of the CPRI link that the port numbers of the CPRI link that receives when the port of the described first standard baseband module and slot number and described port send and slot number when consistent, the networking pattern of definite RRU that is connected with described port is a chain or star-like;

Search submodule, be used to search the port interconnected relation table of CPRI of described configuration module configuration, determine in the described first standard baseband module of described port correspondence and the interconnected port of the described second standard baseband module;

Directly return submodule, be used for described port numbers of searching the CPRI link that the interconnected port of the described first standard baseband module that submodule finds and the described second standard baseband module receives and slot number are returned in the described second standard baseband module and the interconnected port of the described first standard baseband module.

8. as base station as described in the claim 7, it is characterized in that the described first standard baseband module also comprises:

Ring-like definite submodule, be used for the port numbers of the port numbers of the CPRI link that receives when the port of the described first standard baseband module and slot number and the CPRI link of described port transmission and slot number when inconsistent, the networking pattern of definite RRU that is connected with described port is ring-like, and notify the described submodule of searching to search the port interconnected relation table of CPRI that described configuration module disposes, determine in the described first standard baseband module of two port correspondences of the described first standard baseband module and two interconnected CPRI ports of the described second standard baseband module, wherein, the networking pattern of the RRU of two of the described first standard baseband module port connections is ring-like;

Submodule is returned in exchange, be used for exchanging the port numbers and the slot number of the CPRI link that two interconnected CPRI ports of the described first standard baseband module and the described second standard baseband module receive, the port numbers of the CPRI link after the exchange and slot number are returned in the described second standard baseband module and two interconnected ports of the described first standard baseband module.

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