CN110460456B

CN110460456B - Method and device for synchronously generating network topology by Management Information Base (MIB)

Info

Publication number: CN110460456B
Application number: CN201810431922.6A
Authority: CN
Inventors: 孟庆梧; 张一�; 李弋; 罗昕; 李燕
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2018-05-08
Filing date: 2018-05-08
Publication date: 2020-10-20
Anticipated expiration: 2038-05-08
Also published as: CN110460456A

Abstract

The application discloses a method and a device for synchronously generating a network topology by managing an information base MIB, wherein under a network architecture comprising a centralized unit CU/a distributed unit DU, the method comprises the following steps of: generating a data table structure of cloud network element mapping based on the MIB database; the data table structure is used for indicating the corresponding relation between the network elements CU-C, CU-U and CU-NP related to the CU end; and determining a CU end network element included in the network topology according to the information reported by the base station, and generating the network topology according to the CU end network element and the corresponding relation between CU-C, CU-U and CU-NP indicated in the data table structure. The method and the device solve the problem that in the prior art, when the cloud has a complex connection relationship, the network topology cannot present the cloud environment.

Description

Method and device for synchronously generating network topology by Management Information Base (MIB)

Technical Field

The present application relates to the field of network technologies, and in particular, to a method and an apparatus for synchronously generating a network topology through a management information base MIB.

Background

In the existing 5G base station environment, a network topology is presented according to a base station internal MIB (Management information base) data mapping topology primitive, and a planned board card in the base station can be displayed more intuitively through presentation of the network topology, and whether the planned board card is matched with a real board card can be judged. Meanwhile, the network topology can also present the state information of cell establishment, and the connection form of the radio frequency unit and the base station.

For a complex scene of cross-board scheduling of a Radio Remote Unit (RRU), the presentation of a network topology more greatly exerts its value. As shown in fig. 1, the most common network topology analysis situation of a baseband board of a 5G base station, an AAU (active antenna unit), and an antenna is shown in the figure, the AAU is connected to the baseband board through 1 optical port and 3 optical ports, and the antenna channelizes 64 channels into 1 display to connect the AAU. In order to achieve synchronization between the network topology and the actual environment of the base station, the triggering related actions of the base station are limited by the network topology planning, and the presentation of the network topology changes along with the change of the state of the base station.

As shown in fig. 2, in order to ensure that the network topology shows a complete base station environment, a virtual connection environment needs to be established in a base station without network planning, a board card is deployed for planning, radio frequency channel information is planned, cell parameters are configured, the parameters are issued after relevant configuration is completed, and planning data is stored in a database inside the base station. When the Network plan needs to be presented, the upper layer software analyzes the configuration file data stored in the original base station through an SNMP (Simple Network Management Protocol), traverses the planning data according to different entities, and generates a Network topology for the corresponding graphic element of each instance.

Due to the requirements of RAN (Radio Access Network) slicing function, the original 5G base station Network is separated into CU (Centralized Unit) and DU (distributed Unit) which are set in two different entities. The CU terminal is deployed in a server to manage the DU base station. The management of cloud end to DU can not be presented by the current network topology analysis means, and meanwhile, CU end refines CU-C, CU-U and CU-NP agent, so that CU-C, CU-U and DU planning information need to be presented in the cloud end network topology.

The existing scheme mainly presents a connection mode among a base station, a radio frequency unit and an antenna array. For the CU-DU environment, since the DU mainly carries real-time processing functions, similar to the previous integrated base station functions, the network topology can reuse the original parsing scheme. However, because the DU units are independent from each other, the network topology cannot exhibit a complete centralized distribution environment from a single DU unit, and because the characteristics of the DU also determine that the network topology can only resolve the associated units, the upper layer virtualization unit does not belong to the scope of DU management.

The CU-C/CU-U serves as a bearing non-real-time function, operates in a cloud management DU unit, and does not relate to a radio frequency unit, an antenna and a board card. However, since the network topology does not have a corresponding resolution scheme for the virtualization unit, when the cloud has a complex connection relationship, the cloud environment cannot be presented.

Disclosure of Invention

The application provides a method and a device for synchronously generating a network topology by a Management Information Base (MIB), which are used for solving the technical problem that the network topology cannot present a cloud environment when a cloud has a complex connection relation in the prior art.

In a first aspect, the present application provides a method for synchronously generating a network topology by managing an information base MIB, where, in a network architecture including a centralized unit CU/a distributed unit DU, the method includes:

generating a data table structure of cloud network element mapping based on the MIB database; the data table structure is used for indicating the corresponding relation between the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation between CU-C and CU-U or the corresponding relation between CU-C, CU-U and CU-NP;

and determining a CU end network element included in the network topology according to the information reported by the base station, and generating the network topology according to the CU end network element and the corresponding relation between CU-C, CU-U and CU-NP indicated in the data table structure.

In an optional implementation manner, the data table structure includes: the frame number of the network element, the type of the network element and the SCTP index established between the CU-C and the opposite terminal network element.

In an optional implementation manner, if a multi-CU-U scene is accessed under the same machine frame, a CU-U network element table is further included in the data table structure; wherein, the CU-U network element table is used for indicating the slot numbers and the access states of a plurality of CUs-Us in the same machine frame.

In an optional implementation manner, determining, according to information reported by a base station, a CU end network element included in a network topology, and generating the network topology according to a CU end network element and a CU-C, CU-U and CU-NP correspondence indicated in the data table structure includes:

receiving CU network element information and CU-U example information reported by a base station;

extracting a frame number of a CU-C included in the network topology from the CU network element information;

judging whether the CU-U example has the same frame number with the CU-C according to the frame number corresponding to each CU-U example in the CU-U example information to obtain a judgment result;

traversing the CU-U example information, and generating a network topology comprising a CU-C and a CU-U according to the data table structure and the judgment result; or a network topology including CU-C, CU-U and CU-NP.

In an alternative implementation, generating a network topology including CU-C, CU-U and CU-NP according to the data table structure and the determination result includes:

if the different frame CU-U examples with the frame number different from that of the CU-C machine exist according to the judgment result, including the CU-U with the same frame number in the different frame CU-U examples under the same CU-NP to generate a network topology; wherein the network topology includes CU-C, CU-U and CU-NP.

In a second aspect, there is further provided an apparatus for managing information bases, MIBs, and synchronously generating a network topology, where the apparatus includes:

the table structure generating unit is used for generating a data table structure mapped by the cloud network element based on the MIB database; the data table structure is used for indicating the corresponding relation between the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation between CU-C and CU-U or the corresponding relation between CU-C, CU-U and CU-NP;

and the network topology generating unit is used for determining a CU end network element included in the network topology according to the information reported by the base station, and generating the network topology according to the CU end network element and the corresponding relation between the CU-C, CU-U and the CU-NP indicated in the data table structure.

In an optional implementation manner, the data table structure includes: the frame number of the CU-C, the network element type and the SCTP index established between the CU-C and the opposite terminal network element.

In an optional implementation manner, the network topology generating unit is specifically configured to receive CU network element information and CU-U instance information reported by a base station; extracting a frame number of a CU-C included in the network topology from the CU network element information; judging whether the CU-U example has the same frame number with the CU-C according to the frame number corresponding to each CU-U example in the CU-U example information to obtain a judgment result; traversing the CU-U example information, and generating a network topology comprising a CU-C and a CU-U according to the data table structure and the judgment result; or a network topology including CU-C, CU-U and CU-NP.

In an optional implementation manner, the network topology generation unit is further configured to include, in the different frame CU-U instances, a CU-U having the same frame number in the same CU-NP to generate a network topology, if it is determined according to the determination result that the different frame CU-U instances different from the CU-C frame number exist; wherein the network topology includes CU-C, CU-U and CU-NP.

In a third aspect, a computing server is provided, comprising:

a memory for storing computer instructions;

a communication interface for communicating with a network device;

a processor, communicatively connected to the memory and the communication interface, configured to execute the computer instructions in the memory, so as to perform the method according to any one of the implementation manners of the first aspect when the computer instructions are executed.

In a fourth aspect, a computer-readable storage medium is provided, comprising:

the computer-readable storage medium stores computer instructions which, when executed on a computer, cause the computer to perform the method according to any one of the implementations of the first aspect.

The beneficial effect of this application is as follows:

the method and the device are applied to a network architecture comprising the CU/DU, the CU plans the virtual machine environment according to the server, the gNB presents the network topology to the outside and generates the network topology synchronously, the DU displays the network topology according to the internal planning of the gNB, the situation that the two sides of the CU end and the DU end present the whole centralized distributed network environment is achieved, the problem that the multi-network element actual planning display of the CUDU architecture is complex is solved, the cloud network topology environment is presented in a clearer mode, and meanwhile the internal planning of the original 5G base station is not changed.

Drawings

FIG. 1 is a schematic topology diagram of a baseband board and an AAU in the prior art;

FIG. 2 is a schematic flow chart of a network topology analysis implementation method in the prior art;

fig. 3 is a schematic flowchart of a method for synchronously generating a network topology by managing an information base MIB provided in an embodiment of the present application;

FIG. 4 is a schematic flow chart of mapping CU-C and DU from MIB to network topology according to the embodiment of the present application;

FIG. 5 is a schematic flow chart of a network topology of a CU-U and CU-C corporate frame according to an embodiment of the present disclosure;

FIG. 6 is a schematic flow chart of a network topology of a CU-U and CU-C corporate frame according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of an apparatus for synchronously generating a network topology by managing an information base MIB provided in an embodiment of the present application;

fig. 8 is a schematic structural diagram of a computing server according to an embodiment of the present application.

Detailed Description

In order to solve the problem that a CU end cannot analyze a cloud network through the existing network topology in the prior art, the embodiment of the application provides that the CU can synchronously generate the network topology according to the virtual machine environment planned by a server and the gNB, and the DU displays the network topology according to the internal planning of the gNB, so that the situation that the two sides of the CU end and the DU end present the whole centralized distributed network environment is achieved, the technical problem that the multi-network element actual planning display of the CUDU framework is complex is solved, the embodiment of the application can achieve the effect of presenting the cloud network topology environment in a clearer mode, and meanwhile, the internal planning of an original 5G base station is not changed.

The method and apparatus provided by the embodiments of the present application are further described in detail below with reference to the accompanying drawings and specific application scenarios:

example one

As shown in fig. 3, an embodiment of the present application provides a method for synchronously generating a network topology by managing an information base MIB, where the method specifically includes the following example steps when generating the network topology in a network architecture of a CUDU:

step 301, generating a data table structure of cloud network element mapping based on an MIB database; the data table structure is used for indicating the corresponding relation of the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation of CU-C and CU-U and/or the corresponding relation of CU-C, CU-U and CU-NP;

in the embodiment of the application, because the network elements related to the CU end include CU-C, CU-U and CU-NP, considering that the MIB database needs to store information of all three network elements, the data table structure in the embodiment of the application is used to store all the network elements related to the CU end; since different subrack situations of the CU-U and the CU-C pass through the CU-NP agent, and therefore the CU-NP is reflected during network topology analysis, the correspondence between the CU-C, CU-U and the CU-NP in the embodiment of the application comprises the correspondence between the CU-C and the CU-U or the correspondence between the CU-C, CU-U and the CU-NP.

The data table structure mainly comprises the following information: the frame number of the network element, the type of the network element, and the SCTP index established between the CU-C and the network element at the opposite end (the DU establishing the connection relation with the CU-C can be determined through the SCTP index). Wherein, for CU-C itself, the default SCTP index number is 0, and has no meaning.

In the embodiment of the application, for a scene of accessing multiple CU-Us under the same machine frame, the data table structure further comprises a CU-U network element table; wherein, the CU-U network element table is used for indicating the slot numbers and the access states of a plurality of CUs-Us in the same machine frame. And correspondingly, in the scene of accessing multiple CU-Us under the same machine frame, only one CU-U can be represented in the data table structure, and the condition of other CU-Us is confirmed through the CU-U network element table.

And step 302, determining a CU end network element included in the network topology according to the information reported by the base station, and generating the network topology according to the CU end network element and the corresponding relation between CU-C, CU-U and CU-NP indicated in the data table structure.

Since only one central control unit is allowed under each CUDU network, which determines that only one CU-C exists in the data table structure, the planned SCTP index has no meaning since CU-C has no SCTP link to itself. Since the distributed nature of the DUs themselves dictates that a CU-C can manage multiple DUs, there can be multiple DUs in the data table structure.

And the LMT (local Maintenance Terminal) reports a data table structure through the base station and analyzes the network elements into a CU-C type and a DU type. As shown in fig. 4, the flow of mapping CUs-C and DUs from the MIB to the network topology is shown. The network topology maps the CU-C instance and reserves 10 DU connection ports. The DU instance data finds the free CUC-DU port, mapping it to the network topology. If CU-C has no planning data, then the DU will not be resolved either.

Further, determining a CU end network element included in a network topology according to base station reported information because the CU-U has a problem of being in a same frame with the CU-C, and generating the network topology according to the CU end network element and a corresponding relationship between the CU-C, CU-U and the CU-NP indicated in the data table structure includes:

a1, receiving CU network element information and CU-U example information reported by a base station;

a2, extracting the frame number of CU-C included in the network topology from the CU network element information;

a3, judging whether a CU-U instance has the same frame number as the CU-C according to the frame number corresponding to each CU-U instance in the CU-U instance information to obtain a judgment result;

a4, traversing the CU-U instance information, and generating a network topology comprising a CU-C and a CU-U according to the data table structure and the judgment result; or a network topology including CU-C, CU-U and CU-NP.

The CU-us of different frame numbers may be classified based on the obtained CU network element information and CU-U instance information. Since different subrack cases of CU-U and CU-C go through the CU-NP agent, the network topology is resolved to embody CU-NP, and CU-U of the same subrack is included under CU-NP.

The CU-C and CU-U one-body frame is used for generating a network topology based on the MIB database and the data table structure and comprises the following steps:

and determining a CU-U example with the same frame number as the CU-C according to the CU-U example information, traversing the CU-U example information, extracting a CU-U example corresponding to the CU-C in the data table structure, and generating a network topology comprising the CU-C and the CU-U.

As shown in fig. 5, the data table structure shows that one CU-U is in the subrack No. 10, and correspondingly, three CU-us in the subrack No. 10 can be determined according to the CU-U subrack number, and further, the specific slot numbers of the three CU-us in the same subrack can be further determined through the CU-U network element table in the data table structure. So that the network topology can be generated from the data table structure and the CU-U network element table.

II, generating a network topology comprising the CU-C, CU-U and the CU-NP according to the data table structure and the judgment result by using a machine frame network topology different from the CU-C and the CU-U, wherein the network topology comprises: if the different frame CU-U examples with the frame number different from that of the CU-C machine exist according to the judgment result, including the CU-U with the same frame number in the different frame CU-U examples under the same CU-NP to generate a network topology; wherein the network topology includes CU-C, CU-U and CU-NP;

as shown in fig. 6, it can be determined from the CU-U example information that CU-U of the same frame (frame No. 10) as CU-C includes CU-U of other frames, for example, frame No. 11 and frame No. 12, so when generating the network topology, CU-U can be classified according to the frame number, and the corresponding frame No. 10, frame No. 11 and frame No. 12 are classified into three types, and since frame No. 11 and frame No. 12 are different frames from CU-C, they need to be included under CU-NP, so when forming the network topology, CU-U corresponding to frame No. 11 and frame No. 12 correspond to different CU-NP, respectively.

When two conditions of planning the same machine frame CU-U and the different machine frame CU-U exist in the CU-C at the same time, the two conditions are respectively displayed by the network topology, and the finally formed network topology visually displays the two conditions of the same frame CU-U and the CU-C and the different machine frame. As shown in FIG. 6, the network topology resolution under different chassis of CU-C and CU-U is described.

Example two

As shown in fig. 7, an apparatus for managing information bases MIB to synchronously generate a network topology according to an embodiment of the present application may include:

a table structure generating unit 701, configured to generate a data table structure mapped by the cloud network element based on the MIB database; the data table structure is used for indicating the corresponding relation of the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation of CU-C and CU-U and/or the corresponding relation of CU-C, CU-U and CU-NP;

optionally, the data table structure includes: the frame number of the CU-C, the network element type and the SCTP index established between the CU-C and the opposite terminal network element.

Further, a multi-CU-U scene is accessed under the same machine frame, and the data table structure also comprises a CU-U network element table; wherein, the CU-U network element table is used for indicating the slot numbers and the access states of a plurality of CUs-Us in the same machine frame.

And the network topology generating unit 702 is configured to determine, according to the information reported by the base station, a CU end network element included in the network topology, and generate the network topology according to the CU end network element and the CU-C, CU-U and CU-NP correspondence indicated in the data table structure.

Because whether the CU-U and the CU-C are in the same frame or not is the problem, the network topology generating unit is specifically used for receiving CU network element information and CU-U example information reported by a base station aiming at the situation of a CU-U machine frame by the device provided by the embodiment of the application; extracting a frame number of a CU-C included in the network topology from the CU network element information; judging whether the CU-U example has the same frame number with the CU-C according to the frame number corresponding to each CU-U example in the CU-U example information to obtain a judgment result; traversing the CU-U example information, and generating a network topology comprising a CU-C and a CU-U according to the data table structure and the judgment result; or a network topology including CU-C, CU-U and CU-NP.

For the frame network topologies of the CU-C and the CU-U which are different, the network topology generating unit is also used for containing the CU-U with the same frame number in the different frame CU-U examples under the same CU-NP to generate the network topology if the different frame CU-U examples different from the frame number of the CU-C exist according to the judgment result; wherein the network topology includes CU-C, CU-U and CU-NP.

EXAMPLE III

Referring to fig. 8, based on the same inventive concept, an embodiment of the present invention further provides a computing server, which includes a memory 801, a processor 802, and a transceiver 803. The memory 801 and the transceiver 803 may be connected to the processor 802 through a bus interface (fig. 8 is taken as an example), or may be connected to the processor 802 through a dedicated connection line.

The memory 801 may be used to store programs, among other things. The processor 802 is communicatively coupled to the memory and the communication interface, and is configured to execute the computer instructions in the memory to perform the method described in the first embodiment of the present application when the computer instructions are executed.

Where in fig. 8 the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 802 and various circuits of memory represented by memory 801 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 803 may be a plurality of elements, i.e., including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The memory 802 is responsible for managing the bus architecture and general processing, and the memory 801 may store data used by the processor 802 in performing operations.

Based on the same inventive concept, an embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the computer instructions are executed on a computer, the computer is enabled to execute the uplink data transmitting method according to the first embodiment of the present application.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A method for synchronously generating a network topology by managing an information base MIB is characterized in that under a network architecture comprising a centralized unit CU/a distributed unit DU, the method comprises the following steps when the network topology is generated:

generating a data table structure of cloud network element mapping based on the MIB database; the data table structure is used for indicating the corresponding relation of the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation of CU-C and CU-U and/or the corresponding relation of CU-C, CU-U and CU-NP;

2. The method of claim 1, wherein the data table structure comprises: the frame number of the network element, the type of the network element and the SCTP index established between the CU-C and the opposite terminal network element.

3. The method of claim 1, wherein a multi-CU-U scene is accessed under a same frame, then a CU-U net element table is further included in the data table structure; wherein, the CU-U network element table is used for indicating the slot numbers and the access states of a plurality of CUs-Us in the same machine frame.

4. The method according to any of claims 1 to 3, wherein determining a CU terminal network element included in a network topology according to information reported by a base station, and generating the network topology according to the CU terminal network element and a CU-C, CU-U and CU-NP corresponding relationship indicated in the data table structure comprises:

5. The method of claim 4, wherein generating a network topology comprising CU-C, CU-U and CU-NP based on the data table structure and the determination comprises:

6. An arrangement for managing the synchronous generation of a network topology from an information base MIB, characterized in that it comprises, in a network architecture comprising centralized units CU/distributed units DU:

the table structure generating unit is used for generating a data table structure mapped by the cloud network element based on the MIB database; the data table structure is used for indicating the corresponding relation of the network elements CU-C, CU-U and CU-NP involved at the CU end, wherein the corresponding relation comprises the corresponding relation of CU-C and CU-U and/or the corresponding relation of CU-C, CU-U and CU-NP;

7. The apparatus of claim 6, wherein the data table structure comprises: the frame number of the CU-C, the network element type and the SCTP index established between the CU-C and the opposite terminal network element.

8. The apparatus of claim 6, wherein a multi-CU-U scene is accessed under a same frame, then a CU-U net element table is further included in the data table structure; wherein, the CU-U network element table is used for indicating the slot numbers and the access states of a plurality of CUs-Us in the same machine frame.

9. The apparatus according to any one of claims 6 to 8, wherein the network topology generating unit is specifically configured to receive CU network element information and CU-U instance information reported by a base station; extracting a frame number of a CU-C included in the network topology from the CU network element information; judging whether the CU-U example has the same frame number with the CU-C according to the frame number corresponding to each CU-U example in the CU-U example information to obtain a judgment result; traversing the CU-U example information, and generating a network topology comprising a CU-C and a CU-U according to the data table structure and the judgment result; or a network topology including CU-C, CU-U and CU-NP.

10. The apparatus according to claim 9, wherein the network topology generation unit is further configured to include CU-U having the same frame number in different instances of frame CU-U under the same CU-NP to generate a network topology if it is determined from the determination result that there is a different instance of frame CU-U different from the CU-C frame number; wherein the network topology includes CU-C, CU-U and CU-NP.

11. A computing server, comprising:

a memory for storing computer instructions;

a communication interface for communicating with a network device;

a processor, communicatively coupled to the memory and the communication interface, to execute computer instructions in the memory to perform the method of any of claims 1 to 5 when the computer instructions are executed.

12. A computer-readable storage medium characterized by:

the computer readable storage medium stores computer instructions that, when executed on a computer, cause the computer to perform the method of any of claims 1-5.