Implementation method of distributed base station interface protocol

Abstract

The invention relates to the technical field of distributed base station interface protocols, in particular to a method for realizing a distributed base station interface protocol, which comprises the following steps of: configuring a plurality of interface modules for connecting functional modules in a protocol layer M-Plane, and calling the corresponding interface modules through a distributed task scheduler Schedule Server so as to realize the calling of corresponding operation tasks; the protocol butt joint of the base band processing unit BBU and the remote radio unit RRU is realized by configuring a protocol manager Netconf Manager; a protocol adaptation layer is added, different protocols are unified through a YANG model, and an RRU control interface is called through a middleware scheduling module; and a protocol adaptation management module is added and is used for configuring a protocol adaptation layer so as to realize adaptation of third-party protocol, CPRI protocol and eCPRI protocol requests. According to the invention, flexible expansion of the RRU to the third-party management protocol can be realized, and the defects of Netconf in security and specific application scenarios are made up especially for individual requirements of some special environments or special network clients to the management protocol.

Description

Technical Field

[0001] The present invention relates to the technical field of distributed base station interface protocols, and in particular to a method for implementing a distributed base station interface protocol. Background Art

[0002] Distributed Base Station (DBS) is a key component in wireless network architecture, especially 5G distributed base station, which is the development direction of wireless network architecture. Its main purpose is to improve the flexibility and performance of the network by separating the baseband processing unit (BBU) and remote radio unit (RRU) of the base station. The fronthaul protocol between the baseband processing unit (BBU) and the remote radio unit (RRU) is crucial, as it determines the efficiency, latency and reliability of data transmission. The main function of the 4G fronthaul protocol is to provide a standardized high-bandwidth interface for communication between the BBU and RRU of 4G, which is especially suitable for the separation of baseband and radio modules in the distributed base station architecture. 5G fronthaul is an enhanced version of 4G fronthaul, specially designed for 5G network requirements, providing higher bandwidth efficiency and more flexible network architecture. Among them, the M-plane protocol is an important concept in wireless communication networks, especially in the fronthaul application layer protocol architecture of 5G. The M-plane protocol mainly refers to the management plane (M-Plane), which is responsible for the management and control of network equipment, covering the configuration, control and performance management of base station equipment such as BBU and RRU.

[0003] The current 5G fronthaul application layer protocol architecture is implemented through Netconf and the M-Plane protocol that supports the YANG model, and most of them are applied to 5G distributed base stations. When it is necessary to upgrade the traditional distributed base station to a 5G distributed base station, all 4G fronthaul protocols need to be updated to 5G fronthaul protocols, which is relatively costly; the traditional 4G fronthaul protocol architecture is relatively inflexible, and the compatibility of protocols, especially the support for protocol evolution, is particularly insufficient. Compared with the M-Plane protocol architecture, the traditional 4G fronthaul protocol has a high degree of coupling, poor modularity and security, and can no longer meet the requirements of flexibility and stability. When deploying a project, sometimes it is necessary to be compatible with Netconf and third-party management protocols at the same time, and Netconf itself has a dependence on the 5G fronthaul interface. When the 5G fronthaul interface is interrupted, Netconf also interrupts the communication with the BBU and management server, which is not conducive to equipment fault management. Summary of the invention

[0004] The present invention uses Netconf and M-Plane as the basic software architecture to implement the modular design of functional interfaces, uses a unified M-Plane interface for internal calls, and uses the data structure of the YANG model to implement the definition of all data and operations.

[0005] The technical solution proposed by the present invention is: a method for implementing a distributed base station interface protocol, the method comprising: Multiple interface modules for connecting functional modules are configured in the protocol layer M-Plane, and the corresponding interface modules are called through the distributed task dispatcher Schedule Server to implement the call of the corresponding operation task; The protocol manager Netconf Manager is configured to implement protocol connection between the baseband processing unit BBU and the remote radio unit RRU. Add a protocol adaptation layer, unify different protocols through the YANG model, and call the RRU control interface through the middleware scheduling module; Add a protocol adaptation management module to configure the protocol adaptation layer to adapt to third-party protocols, CPRI protocols, and eCPRI protocol requests.

[0006] Preferably, configuring a plurality of interface modules for connecting functional modules in the protocol layer M-Plane, and calling corresponding interface modules through the distributed task dispatcher Schedule Server to implement the calling of corresponding operation tasks, comprises the following steps: Configure one or more of a software upgrade management interface module, a hardware management interface module, a connection management interface module, and a management device interface module at the protocol layer; The Schedule Server in M-Plane calls the corresponding interface module to implement the operation tasks of the corresponding functional modules, including module startup, log management and event mobilization.

[0007] Preferably, the adding of the protocol adaptation layer, unifying different protocols through the YANG model, and calling the RRU control interface through the middleware scheduling module includes the following steps: Add a protocol adaptation layer and a middleware scheduling module to the standard open radio access network architecture ORAN; The protocol sent by the third-party protocol interface is parsed and converted through the protocol adaptation layer, specifically, data conversion is performed through the data modeling language YANG model to generate corresponding network configuration data 1; The middleware scheduling module schedules the middleware, and the middleware calls the RF control interface to implement RRU operations. Specifically: The middleware is arranged in M-Plane, and is used to read network configuration data 1, perform radio frequency control according to the network configuration data 1, and further realize control over the RRU.

[0008] Preferably, the adding of the protocol adaptation layer, unifying different protocols through the YANG model, and calling the RRU control interface through the middleware scheduling module also includes: The CPRI protocol is identified through the protocol adaptation layer, and data conversion is performed through the YANG model to generate corresponding network configuration data 2; The middleware is scheduled through the middleware scheduling module, the network configuration data 2 is read through the middleware, and the radio frequency control is performed according to the network data 2 to realize the control of the RRU.

[0009] Preferably, the adding of the protocol adaptation management module is used to configure the protocol adaptation layer to achieve adaptation of third-party protocols, CPRI protocols and eCPRI protocol requests, including the following steps: Establish a protocol request condition table, including: Create a database table or configuration file to define the mapping relationship between different protocol requests and YANG model commands; record the conditions of each protocol request and the corresponding YANG model command, wherein the YANG model command includes a protocol type, a command ID, and a data format field; According to the protocol request condition table, multiple command requests and data of the third-party protocol or CPRI protocol are mapped to a command request and data request of the YANG model; According to the protocol request table, a command request of a third-party protocol or CPRI protocol is mapped to multiple YANG model command requests and data requests; According to the protocol request table, a request command of a third-party protocol or a CPRI protocol corresponds to a command request and a data request of a YANG model.

[0010] Preferably, the adding of the protocol adaptation management module is used to configure the protocol adaptation layer to achieve adaptation of third-party protocols, CPRI protocols and eCPRI protocol requests, and further includes the following steps: Set up the request condition check process; When the request operation of the third-party protocol or the CPRI protocol satisfies multiple trigger conditions in the request condition table, the temporarily stored one-time conditions are cleared; When the third-party protocol or CPRI protocol request operation does not meet multiple trigger conditions in the request condition table, the existing trigger conditions are temporarily stored, and the existing trigger conditions include: one-time conditions, time-limited conditions and permanent conditions.

[0011] Preferably, the method further comprises the following steps: Set up a third-party protocol conversion module; The third-party protocol conversion module performs protocol parsing and conversion on the protocol sent by the third-party protocol interface or UDP channel, and converts it into an operation command for controlling the RRU by calling the middleware through the M-Plane interface; specifically, it includes: The third-party protocol conversion module parses the received third-party protocol data packet and extracts valid information, wherein the valid information includes data format and command structure; Convert the valid information obtained through parsing into the standard command format required by the M-Plane interface; The converted commands are passed to the middleware through the M-Plane interface; The middleware performs corresponding operations according to the received commands, including configuring RRU parameters and querying status; After the RRU performs the operation, it feeds the result back to the middleware, which then feeds the result back to the third-party system through the M-Plane interface.

[0012] Preferably, the step of corresponding a plurality of command requests and data of a third-party protocol or a CPRI protocol to a command request and data request of a YANG model according to the protocol request condition table comprises the following steps: Parse multiple received protocol requests and extract key information; According to the protocol request condition table, these requests are merged or converted to form a request that conforms to the YANG model; Send this merged request through the YANG model's interface.

[0013] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method for implementing the distributed base station interface protocol.

[0014] Beneficial effects of the present invention: 1. The present invention uses a unified M-Plane interface for internal calls to ensure the consistency and scalability of the architecture, and uses the data structure of the YANG model to define all data and operations to achieve efficient and standardized management and operation processes, which not only enhances the flexibility of the system, but also provides a solid foundation for future function expansion and protocol compatibility.

[0015] 2. Based on the Netconf architecture, the present invention integrates a third-party protocol conversion module, which is responsible for parsing and converting third-party protocol interfaces (such as protocols transmitted through UDP channels). Through protocol conversion, these external protocols are converted into internal operation commands that can be called through the M-Plane interface, and the RRU equipment is controlled through the middleware. This ensures that the system is compatible with multiple protocols, enhances flexibility, and maintains unified management and control of RRUs. Through the standardized processing of the YANG model, protocol compatibility and consistency of operation are ensured.

[0016] 3. The present invention ensures that when all trigger conditions of the requested operation are met, the corresponding operation request can be executed immediately and the temporarily stored one-time conditions are automatically cleared through the request condition check process. For conditions that have not been fully met, the system will temporarily store the existing one-time conditions, time-limited conditions and permanent conditions. Among them, the time-limited conditions will be cleared immediately after the timeout to ensure that the system's operating logic is efficient and meets expectations. In addition, the system can intelligently manage complex trigger conditions, thereby significantly improving the automation level and reliability of condition processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a flow chart of a method for implementing a distributed base station interface protocol.

[0018] Figure 2 It is a schematic diagram of the M-plane protocol module of the present invention.

[0019] Figure 3 A modular schematic diagram of a distributed base station interface protocol of the present invention. DETAILED DESCRIPTION

[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0021] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0022] refer to Figure 1-Figure 3 The technical solution provided by the present invention is: a method for implementing a distributed base station interface protocol, comprising the following steps: 1. Configure multiple interface modules for connecting functional modules in the protocol layer M-Plane, and call the corresponding interface modules through the distributed task dispatcher Schedule Server to implement the call of the corresponding operation task, including: Configure one or more of a software upgrade management interface module, a hardware management interface module, a connection management interface module, and a management device interface module at the protocol layer; The Schedule Server in M-Plane calls the corresponding interface module to implement the operation tasks of the corresponding functional modules, including module startup, log management and event mobilization.

[0023] 2. Implement protocol connection between baseband processing unit BBU and remote radio unit RRU by configuring protocol manager Netconf Manager; 3. Add a protocol adaptation layer; use the YANG model to define the data structure of the third-party protocol interface. This includes defining data types, data formats, data ranges, etc. Then, parse the original data sent by the third-party protocol and convert it into the format defined by the YANG model. Specifically, it includes encoding / decoding, data mapping, unit conversion and other operations.

[0024] Integrate the middleware in M-Plane so that it can read the network configuration data 1 generated by the protocol adaptation layer, write the control logic so that the middleware can execute the corresponding RF control commands according to the network configuration data 1; establish the interaction between the middleware and the RF control interface so that the middleware can send instructions to the RRU and receive its feedback.

[0025] Map the control parameters in the network configuration data 1 to specific RF control instructions, call the RF control interface through the middleware, and send control instructions to the RRU, such as adjusting the power level, frequency selection, etc.; Monitor the status information of the RRU to ensure that it responds correctly to control instructions and makes adjustments when necessary.

[0026] , Add a protocol adaptation management module to configure the protocol adaptation layer to adapt to third-party protocols, CPRI protocols, and eCPRI protocol requests. The following steps are included:

[0027] 1. Establish a protocol request condition table, including: Create a database table or configuration file to define the mapping relationship between different protocol requests and YANG model commands; record the conditions of each protocol request and the corresponding YANG model command, wherein the YANG model command includes a protocol type, a command ID, and a data format field; 2. According to the protocol request condition table, multiple command requests and data of the third-party protocol or CPRI protocol are mapped to a command request and data request of the YANG model; specifically, the process includes: parsing the multiple received protocol requests and extracting key information; merging or converting the requests according to the protocol request condition table to form a request that conforms to the YANG model; and sending the merged request through the interface of the YANG model.

[0028] 3. According to the protocol request table, one command request of the third-party protocol or CPRI protocol corresponds to multiple command requests and data requests of the YANG model; 4. According to the protocol request table, a request command of a third-party protocol or CPRI protocol corresponds to a command request and data request of the YANG model.

[0029] In addition, in order to accurately adapt to various protocols, the following steps are also included: Set up a request condition check process; when the request operation of the third-party protocol or the CPRI protocol meets multiple trigger conditions in the request condition table, clear the temporarily stored one-time conditions; when the request operation of the third-party protocol or the CPRI protocol does not meet multiple trigger conditions in the request condition table, temporarily store the existing trigger conditions, and the existing trigger conditions include: one-time conditions, timeliness conditions and permanent conditions.

[0030] In some preferred embodiments, the conversion process for the third-party protocol includes the following steps: A third-party protocol conversion module is set up; the protocol is parsed and converted through the third-party protocol conversion module for the protocol sent by the third-party protocol interface or UDP channel, and converted into an operation command for controlling the RRU by calling the middleware through the M-Plane interface; specifically, the following are included: The third-party protocol conversion module parses the received third-party protocol data packets and extracts valid information, which includes data format and command structure; converts the valid information obtained by the analysis into the standard command format required by the M-Plane interface; passes the converted command to the middleware through the M-Plane interface; the middleware performs corresponding operations according to the received commands, including configuring RRU parameters and querying status; after the RRU performs the operation, it feeds back the result to the middleware, and the middleware then feeds back the result to the third-party system through the M-Plane interface.

[0031] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the method for implementing the distributed base station interface protocol.

[0032] The embodiments disclosed in the present invention, the process described above with reference to the flowchart can be implemented as a computer software program. The embodiments disclosed in the present invention include a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part, and / or installed from a removable medium. When the computer program is executed by the central processing unit (CPU), the above-mentioned functions defined in the method of the present application are executed. It should be noted that the above-mentioned computer-readable medium of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. The computer-readable storage medium can be, for example, but not limited to, a system, device or device of an electrical, magnetic, optical, electromagnetic, infrared segment, or semiconductor, or any combination of the above. More specific examples of computer-readable storage media may include, but are not limited to, an electrical connection with one or more wire segments, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In the present application, a computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present application, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. The program code embodied on the computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, electrical wire, optical cable, RF, etc., or any suitable combination of the foregoing.

[0033] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present invention. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0034] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the implementation methods of the present invention may be deformed or modified in any way.

Claims

1. A method for implementing a distributed base station interface protocol, characterized in that: The method comprises: Multiple interface modules for connecting functional modules are configured in the protocol layer M-Plane, and the corresponding interface modules are called through the distributed task dispatcher Schedule Server to implement the call of the corresponding operation task; The protocol manager Netconf Manager is configured to implement protocol connection between the baseband processing unit BBU and the remote radio unit RRU. Add a protocol adaptation layer, unify different protocols through the YANG model, and call the RRU control interface through the middleware scheduling module; Add a protocol adaptation management module to configure the protocol adaptation layer to adapt to third-party protocols, CPRI protocols, and eCPRI protocol requests.

2. The method for implementing a distributed base station interface protocol according to claim 1, characterized in that: The method of configuring a plurality of interface modules for connecting functional modules in the protocol layer M-Plane and calling corresponding interface modules through the distributed task dispatcher ScheduleServer to implement the calling of corresponding operation tasks includes the following steps: Configure one or more of a software upgrade management interface module, a hardware management interface module, a connection management interface module, and a management device interface module at the protocol layer; The Schedule Server in M-Plane calls the corresponding interface module to implement the operation tasks of the corresponding functional modules, including module startup, log management and event mobilization.

3. The method for implementing a distributed base station interface protocol according to claim 2, characterized in that: The adding of the protocol adaptation layer, unifying different protocols through the YANG model, and calling the RRU control interface through the middleware scheduling module include the following steps: Add a protocol adaptation layer and a middleware scheduling module to the standard open radio access network architecture ORAN; The protocol sent by the third-party protocol interface is parsed and converted through the protocol adaptation layer, specifically, data conversion is performed through the data modeling language YANG model to generate corresponding network configuration data 1; The middleware scheduling module schedules the middleware, and the middleware calls the RF control interface to implement RRU operations. Specifically: The middleware is arranged in M-Plane, and is used to read network configuration data 1, perform radio frequency control according to the network configuration data 1, and further realize control over the RRU.

4. The method for implementing a distributed base station interface protocol according to claim 3, characterized in that: The adding of the protocol adaptation layer unifies different protocols through the YANG model, and calls the RRU control interface through the middleware scheduling module, and also includes: The CPRI protocol is identified through the protocol adaptation layer, and data conversion is performed through the YANG model to generate corresponding network configuration data 2; The middleware is scheduled through the middleware scheduling module, the network configuration data 2 is read through the middleware, and the radio frequency control is performed according to the network data 2 to realize the control of the RRU.

5. The method for implementing a distributed base station interface protocol according to claim 4, characterized in that: The adding protocol adaptation management module is used to configure the protocol adaptation layer to achieve the adaptation of third-party protocols, CPRI protocols and eCPRI protocol requests, including the following steps: Establish a protocol request condition table, including: Create a database table or configuration file to define the mapping relationship between different protocol requests and YANG model commands; record the conditions of each protocol request and the corresponding YANG model command, wherein the YANG model command includes a protocol type, a command ID, and a data format field; According to the protocol request condition table, multiple command requests and data of the third-party protocol or CPRI protocol are mapped to a command request and data request of the YANG model; According to the protocol request table, a command request of a third-party protocol or CPRI protocol is mapped to multiple YANG model command requests and data requests; According to the protocol request table, a request command of a third-party protocol or a CPRI protocol corresponds to a command request and a data request of a YANG model.

6. The method for implementing a distributed base station interface protocol according to claim 5, characterized in that: The adding protocol adaptation management module is used to configure the protocol adaptation layer to achieve the adaptation of third-party protocols, CPRI protocols and eCPRI protocol requests, and also includes the following steps: Set up the request condition check process; When the request operation of the third-party protocol or the CPRI protocol satisfies multiple trigger conditions in the request condition table, the temporarily stored one-time conditions are cleared; When the third-party protocol or CPRI protocol request operation does not meet multiple trigger conditions in the request condition table, the existing trigger conditions are temporarily stored, and the existing trigger conditions include: one-time conditions, time-limited conditions and permanent conditions.

7. The method for implementing a distributed base station interface protocol according to claim 1, characterized in that: The following steps are also included: Set up a third-party protocol conversion module; The third-party protocol conversion module performs protocol parsing and conversion on the protocol sent by the third-party protocol interface or UDP channel, and converts it into an operation command for controlling the RRU by calling the middleware through the M-Plane interface; Specifically include: The third-party protocol conversion module parses the received third-party protocol data packet and extracts valid information, wherein the valid information includes data format and command structure; Convert the valid information obtained through parsing into the standard command format required by the M-Plane interface; The converted commands are passed to the middleware through the M-Plane interface; The middleware performs corresponding operations according to the received commands, including configuring RRU parameters and querying status; After the RRU performs the operation, it feeds the result back to the middleware, which then feeds the result back to the third-party system through the M-Plane interface.

8. The method for implementing a distributed base station interface protocol according to claim 5, characterized in that: The method of corresponding a plurality of command requests and data of a third-party protocol or a CPRI protocol to a command request and data request of a YANG model according to the protocol request condition table includes the following steps: Parse multiple received protocol requests and extract key information; According to the protocol request condition table, these requests are merged or converted to form a request that conforms to the YANG model; Send this merged request through the YANG model's interface.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement a method for implementing a distributed base station interface protocol as described in any one of claims 1 to 8.

Images