WO2020083296A1

WO2020083296A1 - Method for establishing x2 link, ems, base station, and storage medium

Info

Publication number: WO2020083296A1
Application number: PCT/CN2019/112596
Authority: WO
Inventors: 牛文升
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-10-22
Filing date: 2019-10-22
Publication date: 2020-04-30
Also published as: CN111083801B; CN111083801A

Abstract

Disclosed in the embodiments of the present application are a method for establishing an X2 link, an EMS, a base station and a computer readable storage medium. Said method comprises: receiving a request, for acquiring IP address information of a second base station, initiated by a first base station; acquiring the IP address information of the second base station; and returning the IP address information of the second base station to the first base station, so that the first base station establishes, according to the IP address information of the second base station, an X2 link with the second base station.

Description

Method for establishing X2 link, EMS, base station and storage medium

cross reference

The present invention requires the priority of the Chinese patent application filed on October 22, 2018 in the China Patent Office with the application number 201811230906.7 and the invention titled "Method for Establishing X2 Links, EMS, Base Station and Storage Media". The entire contents of this application It is incorporated in this invention by reference.

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method for establishing an X2 link, an EMS, a base station, and a computer-readable storage medium.

Background technique

SA (Standalone, independent networking) refers to newly built 5G networks, including new base stations, backhaul links, and core networks. While introducing new network elements and interfaces, SA has also adopted new technologies such as network virtualization and software-defined networking on a large scale and combined with 5G NR. At the same time, its technical challenges faced by protocol development, network planning and deployment, and interoperability are beyond 3G and 4G systems.

NSA (Non-Standalone, non-independent networking) refers to the use of existing 4G infrastructure for the deployment of 5G networks. The 5G carrier based on the NSA architecture only carries user data, and its control signaling is still transmitted through the 4G network. Operators can determine upgrade sites and areas based on business needs, and do not necessarily require complete contiguous coverage. Due to the close integration of the 5G carrier and the 4G system, the business continuity between the 5G carrier and the 4G carrier is strongly guaranteed. In the case of 5G network coverage is not yet perfect, the NSA architecture is conducive to ensuring a good user experience.

The X2 interface is an interface between base stations and supports direct transmission of data and signaling. The base stations are connected to each other through the X2 interface to form a mesh network to transmit data. Since there is no signaling link between the gNB (5G base station) and the core network during NSA networking, the IP (Internet Protocol) address cannot be obtained between the 4G / 5G base stations, and the X2 link cannot be established.

Summary of the invention

In view of this, the embodiments of the present application provide a method for establishing an X2 link, an EMS, a base station, and a computer-readable storage medium to solve the problem that an IP address cannot be obtained and an X2 link is established in an independent or non-independent networking scenario .

According to an aspect of an embodiment of the present application, a method for establishing an X2 link is provided. The method includes: receiving a request initiated by a first base station to obtain IP address information of a second base station; obtaining an IP address of the second base station Information; and return the IP address information of the second base station to the first base station, so that the first base station establishes an X2 link with the second base station according to the IP address information of the second base station.

According to another aspect of an embodiment of the present application, there is provided an EMS, the EMS includes a memory, a processor, and a program for establishing an X2 link stored on the memory and executable on the processor, the establishing When the X2 link program is executed by the processor, the steps of the method for establishing the X2 link described above are implemented.

According to another aspect of the embodiments of the present application, a method for establishing an X2 link is provided. The method is used for a first base station. The method includes: initiating a request to an EMS to obtain IP address information of a second base station; receiving the The IP address information of the second base station returned by the EMS; and establishing an X2 link with the second base station according to the IP address information of the second base station.

According to another aspect of the embodiments of the present application, there is provided a first base station. The first base station includes a memory, a processor, and a program for establishing an X2 link stored on the memory and executable on the processor When the program for establishing an X2 link is executed by the processor, the steps of the method for establishing an X2 link described above are implemented.

According to another aspect of the embodiments of the present application, a method for establishing an X2 link is provided. The method is used for a second base station, and the method includes: receiving a request initiated by an EMS to obtain IP address information of the second base station; And when the X2 policy switch is turned on, the network with the first base station is intercommunicable, and the X2 number of the second base station does not exceed a preset limit, establish an X2 link with the first base station And returning the IP address information of the second base station to the EMS, so that the EMS returns the IP address information of the second base station to the first base station.

According to another aspect of the embodiments of the present application, there is provided a second base station. The second base station includes a memory, a processor, and a program for establishing an X2 link stored on the memory and executable on the processor When the program for establishing an X2 link is executed by the processor, the steps of the method for establishing an X2 link described above are implemented.

According to another aspect of the embodiments of the present application, a method for establishing an X2 link is provided. The method includes: a first base station initiates a request to an EMS to obtain IP address information of a second base station; the EMS receives the first A request initiated by the base station to obtain the IP address information of the second base station; obtain the IP address information of the second base station; return the IP address information of the second base station to the first base station; the first base station Receiving the IP address information of the second base station returned by the EMS; establishing an X2 link with the second base station according to the IP address information of the second base station.

According to another aspect of the embodiments of the present application, there is provided a computer-readable storage medium that stores a program for establishing an X2 link, and the program for establishing an X2 link is implemented when executed by a processor Steps of the method of establishing X2 link.

BRIEF DESCRIPTION

FIG. 1 is a schematic flowchart of a method for establishing an X2 link according to the first embodiment of this application;

2 is a schematic structural diagram of an EMS according to a second embodiment of this application;

3 is a schematic flowchart of a method for establishing an X2 link according to a third embodiment of the application;

4 is a schematic structural diagram of a first base station according to a fourth embodiment of this application;

5 is a schematic flowchart of a method for establishing an X2 link according to a fifth embodiment of the application;

6 is a schematic structural diagram of a second base station according to a sixth embodiment of this application;

7 is a schematic flowchart of a method for establishing an X2 link according to a seventh embodiment of this application;

8 is a schematic diagram of a timing structure of an X2 link established between an eNB and a gNB according to an embodiment of this application;

9 is a schematic diagram of a timing structure of establishing an X2 link between gNB1 and gNB2 according to an embodiment of the present application;

10 is a schematic diagram of the timing structure of establishing an X2 link between gNB1 and a gNB2 of a different manufacturer according to an embodiment of the present application;

FIG. 11 is a schematic diagram of the timing structure of establishing an X2 link between an eNB and a gNB in an SA scenario according to an embodiment of the present application.

The implementation, functional characteristics and advantages of the present application will be further described in conjunction with the embodiments and with reference to the drawings.

detailed description

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more comprehensible, the present application will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

First embodiment

As shown in FIG. 1, the first embodiment of the present application provides a method for establishing an X2 link. The method is used in an EMS (Element Management System, network element management system). The method includes: Step S11: Receive an initiative from a first base station Request to obtain the IP address information of the second base station.

In this embodiment, the first base station carries its own IP address and base station ID (Identification, identity identification number) to initiate a request to the EMS to obtain the IP address information of the second base station.

Step S12: Obtain the IP address information of the second base station.

In this embodiment, the acquiring the IP address information of the second base station includes: querying the IP address information of the second base station from a preset table; or, initiating acquisition of the second base station from the second base station The request for the IP address information of the base station receives the IP address information of the second base station returned by the second base station.

Specifically, when the first base station and the second base station are the same manufacturer, a request for acquiring the IP address information of the second base station may be initiated to the second base station. At this time, the second base station receives a request initiated by the EMS to obtain the IP address information of the second base station; the X2 policy switch is turned on, the network with the first base station is interoperable, and X2 of the second base station If the number does not exceed the preset limit, establish an X2 link with the first base station and return the IP address information of the second base station to the EMS.

When the first base station and the second base station are not the same manufacturer, the IP address information of the second base station can be queried from the EMS base station IP preset table, and the queried information of the second base station The IP address information is returned to the first base station.

It should be noted that the same manufacturer mentioned above is not limited to the situation of the same manufacturer.

In one embodiment, the querying the IP address information of the second base station from a preset table further includes: acquiring the IP address information of the second base station, and comparing the IP address of the second base station The information is stored in the preset table.

Step S13: Return the IP address information of the second base station to the first base station, so that the first base station establishes an X2 link with the second base station according to the IP address information of the second base station.

The method for establishing an X2 link in the embodiment of the present application sends the IP address information of the base station to the base station requesting establishment through EMS, and then can establish an X2 link between two base stations that are not in the same core network; In the networking scenario, the IP address cannot be obtained and the X2 link is established.

Second embodiment

As shown in FIG. 2, a second embodiment of the present application provides an EMS. The EMS includes: a memory 21, a processor 22, and an X2 link established on the memory 21 and running on the processor 22 When the program for establishing an X2 link is executed by the processor 22, it is used to implement the steps of the method for establishing an X2 link described below: receiving the first base station to acquire the IP address information of the second base station Request; obtain the IP address information of the second base station; return the IP address information of the second base station to the first base station, so that the first base station is established based on the IP address information of the second base station X2 link with the second base station.

When the program for establishing an X2 link is executed by the processor 22, it is also used to implement the following steps of the method for establishing an X2 link: query the IP address information of the second base station from a preset table; or, Initiate a request to the second base station to obtain the IP address information of the second base station, and receive the IP address information of the second base station returned by the second base station.

When the program for establishing an X2 link is executed by the processor 22, it is also used to implement the steps of the method for establishing an X2 link described below: acquiring the IP address information of the second base station, and converting the second base station The IP address information is stored in the preset table.

In the EMS of the embodiment of the present application, the IP address information of the base station is sent to the base station requested to be established through the EMS, and then two base stations that are not in the same core network can be established with an X2 link; this solves the scenario of independent or non-independent networking Unable to obtain IP address and establish X2 link.

Third embodiment

As shown in FIG. 3, a third embodiment of the present application provides a method for establishing an X2 link. The method is used for a first base station. The method includes: Step S31: Initiating a request to the EMS to obtain IP address information of a second base station .

In this embodiment, the first base station carries its own IP address and base station ID to initiate a request to the EMS to obtain the IP address information of the second base station.

The EMS receives the request initiated by the first base station to obtain the IP address information of the second base station; obtains the IP address information of the second base station; and returns the IP address information of the second base station to the first base station.

Wherein, the EMS acquiring the IP address information of the second base station includes: querying the IP address information of the second base station from a preset table; or, initiating acquisition of the IP address information of the second base station from the second base station Request to receive the IP address information of the second base station returned by the second base station.

Step S32: Receive the IP address information of the second base station returned by the EMS.

Step S33: Establish an X2 link with the second base station according to the IP address information of the second base station.

The method for establishing an X2 link in the embodiment of the present application sends the IP address information of the base station to the base station requesting establishment through EMS, and then can establish an X2 link between two base stations that are not in the same core network; it solves the problem of independent networking or non-independent In the networking scenario, the IP address cannot be obtained and the X2 link is established.

Fourth embodiment

As shown in FIG. 4, a fourth embodiment of the present application provides a first base station. The first base station includes: a memory 41, a processor 42, and stored in the memory 41 and running on the processor 42 The procedure for establishing an X2 link, when the procedure for establishing an X2 link is executed by the processor 42, is used to implement the steps of the method for establishing an X2 link described below: Initiating the acquisition of the IP address information of the second base station from the EMS Request; receive the IP address information of the second base station returned by the EMS; establish an X2 link with the second base station according to the IP address information of the second base station.

The first base station in the embodiment of the present application sends the IP address information of the base station to the base station requesting establishment through EMS, and then can establish an X2 link between two base stations that are not in the same core network; In this scenario, the IP address cannot be obtained and the X2 link cannot be established.

Fifth embodiment

As shown in FIG. 5, a fifth embodiment of the present application provides a method for establishing an X2 link, which is used for a second base station. The method includes: Step S51: Receive an EMS-initiated acquisition of the IP address of the second base station Request for information.

In this embodiment, when the first base station and the second base station are the same manufacturer, the EMS may initiate a request to the second base station to obtain the IP address information of the second base station, and at the same time, the IP address of the first base station and The ID is sent to the second base station.

Step S52: When the X2 policy switch is turned on, the network with the first base station is intercommunicable, and the number of X2 of the second base station does not exceed the preset limit, establish a connection with the first base station X2 links and returns the IP address information of the second base station to the EMS, so that the EMS returns the IP address information of the second base station to the first base station.

In this embodiment, the second base station establishes an X2 link with the first base station according to the IP address and ID of the first base station, and at the same time returns the IP address and ID of the second base station to the EMS.

After acquiring the IP address information of the second base station, the EMS returns the IP address information of the second base station to the first base station, so that the first base station is established according to the IP address information of the second base station X2 link with the second base station.

It is conceivable that when the X2 policy switch is closed, or the network with the first base station is not interoperable, or the number of X2 of the second base station exceeds a preset limit, the The IP address information of the second base station is returned to the EMS.

Sixth embodiment

As shown in FIG. 6, a sixth embodiment of the present application provides a second base station. The second base station includes a memory 61, a processor 62, and is stored on the memory 61 and can run on the processor 62. The procedure for establishing an X2 link, when the procedure for establishing an X2 link is executed by the processor 62, is used to implement the following steps of the method for establishing an X2 link: receiving an EMS initiated acquisition of the IP of the second base station Request for address information; when the X2 policy switch is turned on, the network with the first base station is interoperable, and the number of X2 of the second base station does not exceed the preset limit, establish a connection with the first The X2 link of the base station returns the IP address information of the second base station to the EMS, so that the EMS returns the IP address information of the second base station to the first base station.

The second base station in the embodiment of the present application sends the IP address information of the base station to the base station requesting establishment through EMS, and then can establish an X2 link between two base stations not in the same core network; it solves the problem of independent or non-independent networking In this scenario, the IP address cannot be obtained and the X2 link cannot be established.

Seventh embodiment

As shown in FIG. 7, the seventh embodiment of the present application provides a method for establishing an X2 link. The method includes: Step S71: A first base station initiates a request to an EMS to obtain IP address information of a second base station.

Step S72: The EMS receives the request initiated by the first base station to obtain the IP address information of the second base station; obtains the IP address information of the second base station; and returns the IP address information of the second base station to The first base station.

In this embodiment, the EMS acquiring the IP address information of the second base station includes: querying the IP address information of the second base station from a preset table; or, initiating acquisition of the second base station from the second base station Receiving the IP address information of the second base station returned by the second base station.

Step S73: The first base station receives the IP address information of the second base station returned by the EMS; establishes an X2 link with the second base station according to the IP address information of the second base station.

In order to better explain the process of establishing X2 links in different application scenarios, the following will be described in conjunction with FIGS. 8-10.

As shown in FIG. 8, the first base station is an eNB (evolved Node B, evolved 4G base station), and the second base station is a gNB. 4G and 4G network elements belong to the same EPC (Evolved Packet Core, 4G core network), and 5G base stations do not have independent core networks.

The eNB initiates a request to obtain the IP address information of gNB as follows: Step a: The eNB carries its own IP address and ID, requests the IP address information of gNB, and sends this request message to the 4G EMS (Element Management System, network element management system ), Initiate a request to obtain the IP address information of gNB; Step b: After receiving the request, 4G EMS constructs a message and sends it to 5G EMS; Step c: After 5G EMS receives the message, it parses the ID of gNB and converts the IP address of eNB And ID are sent to gNB, and a request to obtain gNB's IP address information is initiated; Step d: After gNB receives the eNB's IP address and ID sent by 5G EMS, it establishes a link with the eNB and returns the gNB's IP address and ID To 5G EMS; Step e-Step f: After receiving the message returned by gNB, 5G EMS returns the IP address and ID of gNB to 4G EMS; 4G EMS sends the IP address and ID of gNB to the corresponding eNB; Step g: After the eNB receives the gNB's IP address and ID, it can complete the addition of the X2 link.

As shown in FIG. 9, both the first base station and the second base station are gNB. The first base station gNB1 initiates a request to obtain the IP address information of the second base station gNB2, as follows: Step a1: gNB1 carries its own IP address and ID, requests the IP address and ID of gNB2, and sends the request message to the 5G EMS; Step b1 : After receiving the request message, 5G EMS sends gNB1's IP address and ID to gNB2, and initiates a request to obtain gNB2's IP address information; Step c1: after gNB2 receives the message sent by 5G EMS: If the X2 policy switch is turned on , GNB2 detects that the network is interoperable with the IP address of gNB1, and the number of X2 of gNB2 does not exceed the limit, then establishes an X2 link with gNB1, and returns the IP address and ID of gNB2 to 5G EMS; if the X2 policy switch is closed, or the network between gNB1 and gNB2 is not interoperable, or the number of X2 of gNB2 exceeds the limit, gNB2 does not establish an X2 link with gNB1 and does not return a message to 5G EMS; step d1 : After receiving the gNB2 message, 5G EMS parses out the ID of gNB1 and sends the IP address and ID of gNB2 to gNB1; Step e1: After receiving the 5G EMS message, gNB1 parses out the IP address of gNB2 and establishes a connection with gNB2 X2 link.

As shown in FIG. 10, the first base station gNB1 and the second base station gNB2 are different vendors. The first base station gNB1 initiates a request to obtain the IP address information of the second base station gNB2, as follows: Step a2: gNB1 carries its own IP address and ID, requests the IP address and ID of the second base station gNB2, and sends the request message to 5G EMS ; Step b2: After receiving the request message, the 5G EMS queries the IP address and ID of the second base station gNB2 from the registration table of the base station of different manufacturers, and sends the queried information to gNB1; Step c2: gNB1 receives the 5G EMS to send Message, the establishment of the X2 link with the second base station gNB2 is completed.

As shown in FIG. 11, in the SA scenario, the eNB base station and the gNB base station belong to different core networks, respectively. The eNB base station and the gNB base station can also implement the eNB and eNB, eNB and gNB, and gNB through the EMS in the NSA scenario. Obtain IP address information between base stations of different vendors and establish an X2 link. The specific implementation steps are similar to the foregoing, and will not be repeated here.

Eighth embodiment

An eighth embodiment of the present application provides a computer-readable storage medium that stores a program for establishing an X2 link, and the program for establishing an X2 link is used to implement the first embodiment when executed by a processor , Or the steps of the method for establishing an X2 link described in the third embodiment, or the fifth embodiment, or the seventh embodiment.

It should be noted that the computer-readable storage medium of this embodiment belongs to the same concept as the method of the first embodiment, or the third embodiment, or the fifth embodiment, or the seventh embodiment. For the specific implementation process, see Method embodiments, and the technical features in the method embodiments are correspondingly applicable in this embodiment, and will not be repeated here.

The computer-readable storage medium of the embodiment of the present application transmits the IP address information of the base station to the base station requesting establishment through EMS, and then can establish an X2 link between two base stations that are not in the same core network; In the networking scenario, the IP address cannot be obtained and the X2 link is established.

Those of ordinary skill in the art may understand that all or some of the steps, systems, and functional modules / units in the method disclosed above may be implemented as software, firmware, hardware, and appropriate combinations thereof. In a hardware implementation, the division between the functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components are executed in cooperation. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is well known to those of ordinary skill in the art, the term computer storage medium includes both volatile and nonvolatile implemented in any method or technology for storing information such as computer readable instructions, data structures, program modules, or other data Sex, removable and non-removable media. Computer storage media include but are not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disk (DVD) or other optical disk storage, magnetic cartridges, magnetic tape, magnetic disk storage or other magnetic storage devices, or may Any other medium for storing desired information and accessible by a computer. In addition, it is well known to those of ordinary skill in the art that the communication medium generally contains computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium .

The preferred embodiments of the present application have been described above with reference to the accompanying drawings, and thus do not limit the scope of rights of the present application. Any modification, equivalent replacement and improvement made by those skilled in the art without departing from the scope and essence of this application shall fall within the scope of the rights of this application.

Claims

A method for establishing an X2 link, the method includes:

Receiving a request initiated by the first base station to obtain the IP address information of the second base station;

Acquiring the IP address information of the second base station;

Returning the IP address information of the second base station to the first base station, so that the first base station establishes an X2 link with the second base station according to the IP address information of the second base station.
The method according to claim 1, wherein the acquiring the IP address information of the second base station comprises:

Query the IP address information of the second base station from a preset table; or,

Initiate a request to the second base station to obtain the IP address information of the second base station, and receive the IP address information of the second base station returned by the second base station.
The method according to claim 2, wherein the querying the IP address information of the second base station from a preset table further includes:

Obtain the IP address information of the second base station, and store the IP address information of the second base station in the preset table.
A network element management system EMS, wherein the EMS includes a memory, a processor, and an X2 link establishment program stored on the memory and executable on the processor, the X2 link establishment program is used by When the processor executes, it implements the steps of the method for establishing an X2 link according to any one of claims 1 to 3.
A method for establishing an X2 link is used for a first base station. The method includes:

Initiate a request to the EMS to obtain the IP address information of the second base station;

Receiving the IP address information of the second base station returned by the EMS;

The X2 link with the second base station is established according to the IP address information of the second base station.
A first base station, wherein the first base station includes a memory, a processor, and an X2 link establishment program stored in the memory and executable on the processor, the X2 link establishment program is When the processor executes, it implements the steps of the method for establishing an X2 link according to claim 5.
A method for establishing an X2 link is used for a second base station. The method includes:

Receiving a request initiated by the EMS to obtain the IP address information of the second base station;

When the X2 policy switch is turned on, the network with the first base station is interoperable, and the X2 number of the second base station does not exceed a preset limit number, establish an X2 link with the first base station and Returning the IP address information of the second base station to the EMS, so that the EMS returns the IP address information of the second base station to the first base station.
A second base station, wherein the second base station includes a memory, a processor, and an X2 link establishment program stored in the memory and executable on the processor, the X2 link establishment program is used by When the processor executes, it implements the steps of the method for establishing an X2 link according to claim 7.
A method for establishing an X2 link, the method includes:

The first base station initiates a request to the EMS to obtain the IP address information of the second base station;

The EMS receives a request initiated by the first base station to obtain the IP address information of the second base station; obtains the IP address information of the second base station; and returns the IP address information of the second base station to the first A base station;

The first base station receives the IP address information of the second base station returned by the EMS; establishes an X2 link with the second base station according to the IP address information of the second base station.
A computer-readable storage medium, wherein a program for establishing an X2 link is stored on the computer-readable storage medium, and the program for establishing an X2 link is implemented by the processor as claimed in any one of claims 1 to 3. The steps of the method for establishing an X2 link described in the item, or the steps of the method for establishing an X2 link according to claim 5 when the program for establishing an X2 link is executed by the processor, or the method for establishing an X2 link When the program is executed by the processor, the steps of the method for establishing an X2 link according to claim 7 are executed, or when the program for establishing an X2 link is executed by the processor, an X2 link establishment according to claim 9 is realized Steps of the method.