CN112152847B

CN112152847B - Method, device, equipment and readable medium for establishing connection between RRH and BBU

Info

Publication number: CN112152847B
Application number: CN202010987469.4A
Authority: CN
Inventors: 陈靖
Original assignee: Suzhou Inspur Intelligent Technology Co Ltd
Current assignee: Suzhou Inspur Intelligent Technology Co Ltd
Priority date: 2020-09-18
Filing date: 2020-09-18
Publication date: 2023-01-06
Anticipated expiration: 2040-09-18
Also published as: CN112152847A

Abstract

The invention discloses a method for establishing connection between an RRH and a BBU, which comprises the following steps: acquiring the IP address of the BBU through a database server; if the IP address of the BBU fails to be acquired, sending a failure message to the cloud platform; establishing a virtual machine of the BBU through the cloud platform, and writing an IP address of the virtual machine of the BBU into a database server; and acquiring the virtual machine IP address of the BBU through the database server and establishing a connection with the BBU based on the virtual machine IP address. The invention also discloses a device for establishing the connection between the RRH and the BBU, computer equipment and a readable storage medium. The invention relates to a novel connection technology of a remote radio head RRH and a base frequency processing unit BBU based on OpenStack, which combines an SDN network and a CRAN virtual network, manages and combines an SDN switch through the OpenStack virtual network, solves the problem that the RRH and the BBU must be normally arranged near each other due to delay and change of optical fibers of a traditional point-to-point link, and increases the flexibility of network arrangement and saves the time of manual arrangement.

Description

Method, device, equipment and readable medium for establishing connection between RRH and BBU

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a readable medium for establishing a connection between an RRH and a BBU.

Background

In a 4G/LTE radio access network, the radio frequency RF and baseband processing functions performed by a base station are divided into separate remote radio head RRH and baseband unit BBU. Each RRH is connected to the BBU via a dedicated optical fiber based on the common public radio interface CPRI protocol. This architecture enables alternate dedicated copper and coaxial cable connections between the radio transceivers and base stations, and enables BBUs to be placed in more convenient locations to simplify deployment and maintenance.

The conventional network needs a plurality of BBUs to connect the RRHs, and the Base Station can be split into a Remote Radio Head RRH (Remote Radio Head) and a Base band processing Unit BBU (Base and Process Unit) through the CRAN technology, and the plurality of BBUs are centralized and formed into one BBU Pool by using a virtualization technology, so as to obtain the advantages of reducing the deployment/operation cost and providing the flexible system capacity.

Although more efficient than a general 3G wireless network, the conventional network architecture has a limitation in bandwidth due to the speed of CPRI link, which is usually 1Gbps to 10Gbps, and thus the speed is limited. Furthermore, CPRI connections are point-to-point links, and the delay and variation thereof brought by the optical fiber makes the RRHs and BBUs typically have to be deployed in the vicinity of each other, at a distance of 2km to 20km, thus limiting the flexibility of network deployment.

Disclosure of Invention

In view of this, an object of an embodiment of the present invention is to provide a method, an apparatus, a device, and a readable medium for establishing a connection between an RRH and a BBU, which are based on a novel connection technology of an OpenStack remote radio head RRH and a baseband processing unit BBU, combine an SDN network and a CRAN virtual network, manage and combine an SDN switch through the OpenStack virtual network, solve a problem that the RRH and the BBU must be usually deployed near each other due to delay and change caused by an optical fiber in a conventional peer-to-peer link, and define automatic connection through software to increase flexibility of network deployment and save time for manual deployment.

Based on the above purpose, an aspect of the embodiments of the present invention provides a method for establishing a connection between an RRH and a BBU, including the following steps: acquiring the IP address of the BBU through a database server; if the BBU IP address acquisition fails, sending a failure message to the cloud platform; establishing a virtual machine of the BBU through the cloud platform, and writing an IP address of the virtual machine of the BBU into a database server; and acquiring the virtual machine IP address of the BBU through the database server and establishing a connection with the BBU based on the virtual machine IP address.

In some embodiments, further comprising: an IP of DHCP is obtained via an SDN network through an SDN switch.

In some embodiments, sending the failure message to the cloud platform comprises: sending a failure message to openstack; the virtual machine for establishing the BBU through the cloud platform comprises: and establishing a virtual machine of the BBU through openstack.

In some embodiments, sending the failure message to the cloud platform comprises: sending the failure message packet to the SDN controller; the SDN controller receives the failure message package, confirms that RRH is started, defines network characteristics through SDN software, and sends the failure message to the cloud platform interface through software definition.

On the other hand, the embodiment of the present invention further provides a device for establishing a connection between an RRH and a BBU, including: the system comprises an IP acquisition module, a database server and a BBU (base band unit) module, wherein the IP acquisition module is configured to acquire an IP address of the BBU through the database server; the notification module is configured to send a failure message to the cloud platform if the acquisition of the IP address of the BBU fails; the processing module is configured for establishing a virtual machine of the BBU through the cloud platform and writing the IP address of the virtual machine of the BBU into the database server; and the connection module is configured and used for acquiring the virtual machine IP address of the BBU through the database server and establishing connection with the BBU based on the virtual machine IP address.

In some embodiments, the obtaining IP module is further configured to: an IP of DHCP is obtained via an SDN network through an SDN switch.

In some embodiments, the notification module is further configured to: sending a failure message to openstack; the processing module is further configured to: and establishing a virtual machine of the BBU through openstack.

In some embodiments, the notification module is further configured to: sending the failure message packet to the SDN controller; the SDN controller receives the failure message package, confirms that RRH is started, defines network characteristics through SDN software, and sends the failure message to the cloud platform interface through software definition.

In another aspect of the embodiments of the present invention, there is also provided a computer device, including: at least one processor; and a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of the method.

In a further aspect of the embodiments of the present invention, a computer-readable storage medium is also provided, in which a computer program for implementing the above method steps is stored when the computer program is executed by a processor.

The invention has the following beneficial technical effects: the novel connection technology of the remote radio head RRH and the base frequency processing unit BBU based on the OpenStack combines an SDN network and a CRAN virtual network, manages and combines an SDN switch through the OpenStack virtual network, solves the problem that the RRH and the BBU must be normally arranged nearby each other due to delay and change of optical fibers of a traditional point-to-point link, and simultaneously increases flexibility of network arrangement and saves time of manual arrangement through software defined automatic connection.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of a method for establishing connection between an RRH and a BBU provided by the present invention;

FIG. 2 is a schematic diagram of an embodiment of an apparatus for establishing connection between an RRH and a BBU provided by the invention;

FIG. 3 is a schematic diagram of an embodiment of a computer device provided by the present invention;

FIG. 4 is a schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.

It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are only used for convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and no description is given in the following embodiments.

In view of the above objects, a first aspect of the embodiments of the present invention provides an embodiment of a method for establishing a connection between an RRH and a BBU. Fig. 1 is a schematic diagram illustrating an embodiment of a method for establishing connection between an RRH and a BBU provided by the present invention. As shown in fig. 1, the embodiment of the present invention includes the following steps:

s01, acquiring an IP address of the BBU through a database server;

s02, if the acquisition of the IP address of the BBU fails, sending a failure message to a cloud platform;

s03, establishing a virtual machine of the BBU through the cloud platform, and writing the IP address of the virtual machine of the BBU into a database server; and

s04, acquiring the virtual machine IP address of the BBU through the database server and establishing a connection with the BBU based on the virtual machine IP address.

In this embodiment, the RRH starts up; the RRH obtains an IP through an SDN network through an SDN Switch; the RRH obtains a BBU IP through a database server Redis server; when finding that the IP of the butt-joint BBU cannot be found, the RRH transmits a Query-miss packet to inform that the IP cannot be found; the SDN controller receives the Query miss packet, knows that the RRH is started, defines network characteristics through SDN software and directly informs the OSM MANO of message transmission through software definition; the MANO receives the SDN controller notification and establishes a BBU Virtual Machine through OpenStack; and writing the established BBU Virtual Machine IP into the Redis server, and establishing an RRH BBU line.

In this embodiment, openStack is deployed on CRAN Server, and Guest Network, external Network, and Mgmt Network are assigned to different interfaces. The management Network (Mgmt Network) is used as a host internal communication service, including a message transmission service and a database service, and can be set as an independent Network or integrated with other networks on a dedicated Network port interface. In many cases, the same interface may include different inter-host brightness image transfers or dense bandwidth traffic; an application programming interface (API Network) exposes OpenStack application programs to users of cloud services for use, and provides endpoint information for different services to be accessed by the users through the API Network, wherein the OpenStack application programs comprise OpenStack services such as Keystone, neutron, glance and Horizon; an External Network (External Network) provides Network access rights for the OpenStack Neutron Network router, and after the router is configured and connected to an External Network, the Network becomes a source of floating IP addresses of virtual machines and other Network resources; guest networks (Guest networks) are networks dedicated to virtual machine traffic, and the physical interfaces for the outside and Guest networks may be either dedicated interfaces or shared with other types of traffic.

In this embodiment, the Network Operating System is a special Operating System running on a router, a Network switch, and a firewall. Virtualisation is a broad term that in terms of computers generally means that computing components run on a virtual basis rather than a real basis. Virtualization technology can enlarge the capacity of hardware and simplify the reconfiguration process of software. The virtualization technology of the CPU can simulate the parallel of multiple CPUs by a single CPU, allow one platform to run a plurality of operating systems simultaneously, and the application programs can run in mutually independent spaces without mutual influence, thereby obviously improving the working efficiency of the computer. The C-RAN is a new radio access network architecture proposed according to the current network conditions and the trend of technological progress. The C-RAN is a green Radio access network architecture (Clean system) based on Centralized Processing, cooperative Radio (cooperative Radio) and Real-time Cloud computing architecture (Real-time Cloud Infrastructure). The essential of the method is that the number of base station rooms is reduced, energy consumption is reduced, a cooperation and virtualization technology is adopted, resource sharing and dynamic scheduling are realized, and spectrum efficiency is improved, so that operation with low cost, high bandwidth and flexibility is achieved. OpenStack is a combined open source tool that employs centralized virtual resources to build and manage private and public clouds. Six of the items are responsible for processing operation, network, storage, identification and mapping services and other core cloud computing services, and other more than ten optional items can be combined together to construct a unique and deployable cloud service. OpenStack retrieves resources such as storage, CPU and RAM from various specific supplier schemes, disassembles the resources by the hypervisor, and distributes the resources according to the requirements. OpenStack further extracts these virtual resources using a consistent set of Application Programming Interfaces (APIs), and places them into separate resource pools to drive a standard cloud computing tool that interacts directly with managers and users. The SDN Network is a Software Defined Network (Software Defined Network), is a novel Network innovation architecture provided by clean-slate project research group of stanford university in the united states, and is an implementation manner of Network virtualization. The core technology OpenFlow separates the control plane and the data plane of the network equipment, thereby realizing the flexible control of network flow, enabling the network to be more intelligent as a pipeline, and providing a good platform for the innovation of a core network and application.

In some embodiments of the invention, further comprising: IP of DHCP is obtained through SDN switch via SDN network.

In some embodiments of the invention, sending the failure message to the cloud platform comprises: sending a failure message to openstack; the virtual machine for establishing the BBU through the cloud platform comprises: and establishing a virtual machine of the BBU through openstack.

In some embodiments of the invention, sending the failure message to the cloud platform comprises: sending the failure message packet to the SDN controller; and the SDN controller receives the failure message packet, confirms that the RRH is started, defines network characteristics through SDN software, and sends the failure message to the cloud platform interface through software definition.

It should be particularly noted that, the steps in the embodiments of the method for establishing a connection between an RRH and a BBU described above can be mutually intersected, replaced, added, or deleted, so that these reasonable permutation and combination transformations should also belong to the scope of the present invention, and should not limit the scope of the present invention to the embodiments.

In view of the above object, a second aspect of the embodiments of the present invention provides an apparatus for establishing a connection between an RRH and a BBU. Fig. 2 is a schematic diagram of an embodiment of an apparatus for establishing connection between an RRH and a BBU provided by the present invention. As shown in fig. 2, the embodiment of the present invention includes the following modules: an obtaining IP module S11 configured to obtain an IP address of the BBU through the database server; the notification module S12 is configured to send a failure message to the cloud platform if the IP address of the BBU fails to be acquired; the processing module S13 is configured for establishing a virtual machine of the BBU through the cloud platform and writing the IP address of the virtual machine of the BBU into the database server; and a connection module S14 configured to acquire the virtual machine IP address of the BBU through the database server and establish a connection with the BBU based on the virtual machine IP address.

In some embodiments of the invention, the obtaining IP module S11 is further configured to: an IP of DHCP is obtained via an SDN network through an SDN switch.

In some embodiments of the invention, the notification module S12 is further configured to: sending a failure message to openstack; the processing module S13 is further configured to: and establishing a virtual machine of the BBU through openstack.

In some embodiments of the invention, the notification module S12 is further configured to: sending the failure message packet to the SDN controller; the SDN controller receives the failure message package, confirms that RRH is started, defines network characteristics through SDN software, and sends the failure message to the cloud platform interface through software definition.

In view of the above object, a third aspect of the embodiments of the present invention provides a computer device. Fig. 3 is a schematic diagram of an embodiment of a computer device provided by the present invention. As shown in fig. 3, the embodiment of the present invention includes the following means: at least one processor S21; and a memory S22, the memory S22 storing computer instructions S23 executable on the processor, the instructions when executed by the processor implementing the steps of the above method.

The invention also provides a computer readable storage medium. FIG. 4 illustrates a schematic diagram of an embodiment of a computer-readable storage medium provided by the present invention. As shown in fig. 4, the computer-readable storage medium stores S31 a computer program S32 that, when executed by a processor, performs the method as described above.

Finally, it should be noted that, as one of ordinary skill in the art can appreciate that all or part of the processes of the methods of the above embodiments can be implemented by a computer program to instruct related hardware, and the program of the method for establishing a connection between an RRH and a BBU can be stored in a computer readable storage medium, and when executed, the program can include the processes of the embodiments of the methods as described above. The storage medium of the program may be a magnetic disk, an optical disk, a read-only memory (ROM), or a Random Access Memory (RAM). The embodiments of the computer program may achieve the same or similar effects as any of the above-described method embodiments.

Furthermore, the methods disclosed according to embodiments of the invention may also be implemented as a computer program executed by a processor, which may be stored in a computer-readable storage medium. Which when executed by a processor performs the above-described functions defined in the methods disclosed in embodiments of the invention.

Further, the above method steps and system elements may also be implemented using a controller and a computer readable storage medium for storing a computer program for causing the controller to implement the functions of the above steps or elements.

Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the disclosure herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as software or hardware depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments of the present invention.

In one or more exemplary designs, the functions may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital Subscriber Line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. Disk and disc, as used herein, includes Compact Disc (CD), laser disc, optical disc, digital Versatile Disc (DVD), floppy disk, blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.

The foregoing are exemplary embodiments of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.

It should be understood that, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly supports the exception. It should also be understood that "and/or" as used herein is meant to include any and all possible combinations of one or more of the associated listed items.

The numbers of the embodiments disclosed in the embodiments of the present invention are merely for description, and do not represent the merits of the embodiments.

It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, of embodiments of the invention is limited to these examples; within the idea of an embodiment of the invention, also technical features in the above embodiment or in different embodiments may be combined and there are many other variations of the different aspects of the embodiments of the invention as described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.

Claims

1. A method for establishing connection between an RRH and a BBU (baseband unit) is characterized by comprising the following steps:

acquiring the IP address of the BBU through a database server;

if the BBU IP address is failed to be acquired, sending a failure message to a cloud platform;

establishing a virtual machine of the BBU through the cloud platform, and writing the IP address of the virtual machine of the BBU into the database server; and

acquiring a virtual machine IP address of the BBU through the database server and establishing a connection with the BBU based on the virtual machine IP address;

wherein sending the failure message to the cloud platform comprises: sending a failure message to openstack;

establishing the virtual machine of the BBU through the cloud platform comprises: and establishing a virtual machine of the BBU through the openstack.

2. The method for establishing a connection between the RRH and the BBU according to claim 1, further comprising:

the IP of the RRH is obtained via the SDN network through the SDN switch.

3. The method for establishing a connection between the RRH and the BBU according to claim 1, wherein sending the failure message to the cloud platform comprises:

sending the failure message packet to the SDN controller;

and the SDN controller receives the failure message packet, confirms that the RRH is started, and sends the failure message to a cloud platform interface through a software defined network.

4. An apparatus for establishing connection between an RRH and a BBU, comprising:

the IP acquisition module is configured for acquiring the IP address of the BBU through the database server;

the notification module is configured to send a failure message to the cloud platform if the IP address of the BBU is failed to be acquired;

the processing module is configured to establish a virtual machine of the BBU through the cloud platform and write a virtual machine IP address of the BBU into the database server; and

the connection module is configured to acquire the virtual machine IP address of the BBU through the database server and establish connection with the BBU based on the virtual machine IP address;

wherein the notification module is further configured to: sending a failure message to openstack;

establishing the virtual machine of the BBU through the cloud platform includes: and establishing a virtual machine of the BBU through the openstack.

5. The apparatus for establishing a connection between an RRH and a BBU according to claim 4, wherein the get IP module is further configured to:

the IP of the RRH is obtained via the SDN network through the SDN switch.

6. The apparatus for RRH and BBU connection according to claim 4, wherein the notifying module is further configured to:

sending the failure message packet to the SDN controller;

7. A computer device, comprising:

at least one processor; and

a memory storing computer instructions executable on the processor, the instructions when executed by the processor implementing the steps of the method of any one of claims 1 to 3.

8. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 3.