WO2015109538A1

WO2015109538A1 - Method for information interaction between base stations, and base stations

Info

Publication number: WO2015109538A1
Application number: PCT/CN2014/071399
Authority: WO
Inventors: 邢平平
Original assignee: 华为技术有限公司
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2015-07-30
Also published as: CN105210393A; CN105210393B

Abstract

Embodiments of the present invention provide a method for information interaction between base stations, and the base stations. The method comprises: a second base station receiving cell location information sent by a first base station, the cell location information comprising location information of a first cell, the first cell being a cell the first base station belongs to, the first base station being a base station the UE is connected to before a UE establishes a connection with the second base station or camps on a second cell, and the second cell being a cell the second base station belongs to; and the second base station determining a location of the first cell according to the cell location information, so that the second base station accurately determines a location of the cell the first base station belongs to, and the base station performs high-precision mobility optimization of the UE.

Description

Inter-base station information interaction method and base station

The present invention relates to the field of wireless communication technologies, and in particular, to an inter-base station information interaction method and a base station. Background Art In an existing communication process, a base station and a base station need to frequently exchange mutual radio access network information for better communication. For example, in the Long Term Evolution (LTE) network architecture, the base station and the base station can directly exchange information of the radio access network through the X2 interface, or the base station and the base station can pass the evolved packet switching center. For example, the Mobility Management Entity (MME) or the Serving Gateway (S_GW) S_GW is connected, that is, the SI interface exchanges information of the radio access network.

In the prior art, when the two base stations interact, the information sent between the base station and the base station includes: E-UTRAN Cell Globle ID (ECGI) and physical cell ID (Physical Cell ID). , hereinafter referred to as PCI) and E-UTRA Absolute Radio Frequency Channel Number (hereinafter referred to as EDFCN).

The above information of the interaction between the base stations can be used for the mobility optimization of the user equipment by the base station. However, the movement process of the user equipment may be complicated, and it is obviously not accurate enough to use only the information in the prior art to perform mobility optimization.

Summary of the invention

The embodiments of the present invention provide a method for inter-base station information interaction and a base station, which are used to solve the problem that the base station does not perform high mobility optimization on the UE.

In a first aspect, an embodiment of the present invention provides a method for inter-base station information exchange, including: acquiring, by a second base station, cell location information sent by a first base station, where the cell location information includes location information of a first cell, where the first The cell is a cell to which the first base station belongs, and the first base station is a user equipment UE connected before establishing a connection with the second base station or camping on the second cell. a base station, where the location cell of the second cell is a cell to which the second base station belongs;

And determining, by the second base station, a location of the first cell according to the cell location information, where the location of the first cell is used by the second base station to perform mobility optimization on the UE.

In a first possible implementation manner, the third cell is a cell to which the third base station belongs, and the third base station is a base station that is connected before the UE is connected to the first base station.

With reference to the first aspect or the first possible implementation manner of the first aspect, in a second possible implementation manner, the second base station optimizes mobility of the UE according to the cell location information. .

With reference to the second aspect, the second possible implementation of the second aspect, in the third possible implementation, before the acquiring, by the second base station, the cell location information sent by the first base station, the method further includes:

The second base station acquires current location information of the UE.

With reference to the third possible implementation manner of the first aspect, in a fourth possible implementation manner, after the acquiring, by the second base station, the cell location information sent by the first base station, the method further includes:

Determining, by the second base station, a first distance between the UE and the first base station according to the cell location information and the UE location information;

The second base station optimizes the mobility of the user equipment UE according to the cell location information, including:

Determining, by the second base station, the base station that switches the UE according to the first distance and the second distance, where the second distance is a distance between the UE and the second base station, where the second base station a base station that is currently establishing a connection with the UE; or

The second base station performs peer-to-peer handover between the first base station and the second base station according to the first distance and the second distance, where the second distance is the UE and the first The distance between the two base stations, where the second base station is a base station that currently establishes a connection with the UE.

With reference to any one of the second possible implementation to the fourth possible implementation of the first aspect, in a fifth possible implementation, the cell location information includes a location of the first cell a coordinate, an identifier of the first cell, a range of the first cell, a time of the UE in the first cell, a location coordinate of the third cell, an identifier of the third cell, the At least one of a range of three cells and a time of the UE in the third cell.

In combination with the fifth possible implementation of the first aspect, in a sixth possible implementation The second base station optimizes the mobility of the UE according to the cell location information, including:

The second base station determines the path information of the UE according to the cell location information. With reference to the fifth or the sixth possible implementation manner of the first aspect, in a seventh possible implementation, the location coordinate of the first cell is a first antenna position coordinate of the first cell The first antenna is an antenna connected to the first base station where the first cell is located.

With reference to any one of the fifth possible implementation manner of the first aspect to the seventh possible implementation manner, in an eighth possible implementation manner, the location coordinate of the third cell is a third antenna position coordinate of the third cell, where the third antenna is an antenna connected to the third base station where the third cell is located.

In a second aspect, an embodiment of the present invention provides a base station, including:

a receiver, configured to acquire cell location information sent by the first base station, where the cell location information includes location information of the first cell, where the first cell is a cell to which the first base station belongs, and the first base station is a user a base station that the device UE is connected to before establishing or connecting to the second base station, where the second cell is a cell to which the second base station belongs;

And a processor, configured to determine, according to the cell location information, a location of the first cell. In a first possible implementation manner, the cell location information further includes location information of a third cell, where the third cell is a cell to which the third base station belongs, and the third base station is connected to the UE by the third base station. A base station to which a base station is connected.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a second possible implementation manner, the processor is configured to perform mobility on the UE according to the cell location information. optimize.

With reference to the second aspect, the second possible implementation of the second aspect, in a third possible implementation, the receiver is further configured to acquire current location information of the UE.

With reference to the third possible implementation manner of the second aspect, in a fourth possible implementation, the processor is further configured to determine, according to the cell location information and the current location information of the UE, a first distance between the UE and the first base station; determining, according to the first distance and the second distance, a base station that the UE is to be handed over, where the second distance is the UE and the second a distance between the base stations, where the second base station is a base station that is currently connected to the UE; or, according to the first distance and the second distance, the first base station and the second base station The base station performs the peer-to-peer handover, the second distance is the distance between the UE and the second base station, and the second base station is a base station that currently establishes a connection with the UE.

With reference to the second possible implementation of the second aspect to any one of the fourth possible implementation manners, in a fifth possible implementation manner, the cell location information includes a location of the first cell a coordinate, an identifier of the first cell, a range of the first cell, a time of the UE in the first cell, a location coordinate of the third cell, an identifier of the third cell, the At least one of a range of three cells and a time of the UE in the third cell.

With reference to the fifth possible implementation of the second aspect, in a sixth possible implementation, the processor is further configured to determine, according to the cell location information, the UE mobility path information.

With reference to the fifth or the sixth possible implementation manner of the second aspect, in a seventh possible implementation, the location coordinate of the first cell is a first antenna position coordinate of the first cell The first antenna is an antenna connected to the first base station where the first cell is located.

With reference to any one of the fifth possible implementation of the second aspect to the seventh possible implementation, in an eighth possible implementation, the location coordinate of the third cell is a third antenna position coordinate of the third cell, where the third antenna is an antenna connected to the third two base station where the third cell is located.

The embodiment of the present invention provides a method for inter-base station information interaction, and a base station, where the second base station acquires cell location information that is sent by the first base station, where the cell location information includes location information of the first cell, where the first cell is a cell to which the first base station belongs. The first base station is a base station that the UE connects before establishing a connection with the second base station or camping on the second cell, the second cell is a cell to which the second base station belongs, and the second base station determines the first according to the cell location information. The location of the cell, so that the second base station accurately determines the location of the cell to which the first base station belongs, thereby implementing the mobility optimization of the UE to the UE with higher accuracy. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly made. Obviously, the drawings in the following description It is some embodiments of the present invention, and those skilled in the art can obtain other ones according to these drawings without paying creative labor. The figure.

1 is a flowchart of a method for information exchange between base stations according to an embodiment of the present invention;

2 is a flowchart of a method for information exchange between base stations according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a system for performing information exchange between base stations according to an embodiment of the present invention; FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The inter-base station information exchange method provided by the embodiment of the present invention may be specifically applied to information exchange between at least two base stations, for example, an evolved Node B (hereinafter referred to as eNB) and an eNB, an eNB, and a wireless network. Information exchange between the controller (Radio Network Controller, hereinafter referred to as RNC), between the RNC and the RNC, between the eNB and the base station controller (Base Station Controller, hereinafter referred to as BSC), or between the RNC and the BSC The method for inter-base station information interaction provided in this embodiment may be performed by using an inter-base station information interaction device, where the inter-base station information interaction device may be integrated on the base station, and the inter-base station information interaction device may adopt software and/or hardware. The way to achieve. The method and apparatus for inter-base station information exchange provided in this embodiment are described in detail below.

FIG. 1 is a flowchart of a method for information exchange between base stations according to an embodiment of the present invention. As shown in FIG. 1 , the method in this embodiment may include:

Step 101: The second base station acquires cell location information sent by the first base station, where the cell location information includes location information of the first cell location, where the first cell is a cell to which the first base station belongs.

The first base station in this embodiment is a base station to which the user equipment UE is connected before establishing a connection with the second base station or camping on the second cell, and the second cell is a cell to which the second base station belongs. The location information of the cell is used by the second base station to perform mobility optimization on the user equipment. The location information of the cell includes the location of the first cell or related information for determining the location of the first cell.

It should be noted that the second base station may directly connect between the first base station and the second base station. The interface information of the cell sent by the first base station is obtained through the X2 interface or the SI interface. The cell location information includes the cell center point coordinates and the cell coverage. The cell center point coordinates may be the location of the cell antenna set on the base station, that is, the latitude and longitude coordinate information of the cell antenna.

Specifically, the applicable scenario that the second base station acquires the cell location information sent by the first base station includes at least the following two types:

In a first applicable scenario, the second base station directly acquires cell location information sent from the first base station.

In this embodiment, the implementation manner of the second base station directly acquiring the cell location information sent by the first base station may be specifically as follows:

After the second base station sends an X2 interface request to the first base station, the second base station receives an X2 setup response sent by the first base station, where the X2 interface setup response carries the cell location. information. Or,

After the second base station sends a base station configuration update message (eNB configurt ion update) to the first base station, the second base station receives the base station configuration update response (eNB configuration acknowledge) sent by the first base station, where the base station configuration update response carries the cell location information. Or

The first base station sends a Χ2 interface setup request to the second base station, where the 位置2 interface setup request carries the cell location information. Or,

The first base station sends a base station configuration update message to the second base station, where the base station configuration update response carries the cell location information.

In a second applicable scenario, the second base station acquires cell location information sent by the first base station by using the base station controller.

In this embodiment, the implementation manner of the second base station acquiring the location information of the cell sent by the first base station by using the base station controller may be specifically:

After the base station controller receives the eNB direct information transfer, the second base station receives the MME direct information transfer sent by the MME, where the base station directly transmits the message. And the MME direct transmission information includes cell location information of the first base station, respectively.

Step 102: The second base station determines, according to the cell location information, a location of the first cell. In this embodiment, the second base station may determine the location of the first cell according to the obtained cell location information.

In this embodiment, the cell location information that is sent by the first base station is obtained by the second base station, where the cell location information includes location information of the first cell, where the first cell is a cell to which the first base station belongs, where the first base station is a base station that is connected to the second base station before the UE establishes a connection or camps on the second cell, and the second cell is a cell to which the second base station belongs, and the second base station determines the location of the first cell according to the location information of the cell, thereby implementing the first The two base stations accurately determine the location of the cell to which the first base station belongs, thereby implementing the mobility optimization of the base station to the UE with higher accuracy.

Further, after step 102, it may also include:

The second base station optimizes the mobility of the UE according to the cell location information.

For example, the second base station determines, according to the first distance and the second distance, a base station that switches the UE, or performs a peer handover between the first base station and the second base station, where the first The distance is the distance between the UE and the first base station, and the second distance is the distance between the UE and the second base station.

It should be noted that the cell location information is antenna location information of the cell, and the antenna is an antenna connected to the base station where the cell is located.

Based on the foregoing embodiment, the cell location information in step 101 may further include location information of the second cell, where the second cell is a cell connected to the UE before being connected to the first cell.

Further, the cell location information includes location coordinates of the first cell, an identifier of the first cell, a range of the first cell, a time of the UE in the first cell, a location coordinate of the third cell, an identifier of the third cell, and a third In the range of the cell, at least one of the time of the UE in the third cell, the range of the first cell is generally represented by the radius of the first cell, and the range of the third cell is generally represented by the radius of the third cell.

2 is a flowchart of a method for information exchange between base stations according to another embodiment of the present invention. FIG. 3 is a schematic structural diagram of a system for performing information exchange between base stations according to an embodiment of the present invention. As shown in FIG. Establishing a connection or camping on the second cell, the first base station is a base station that the UE connects before establishing a connection with the second base station or camping on the second cell, and the second base station may be based on the first between the UE and the first base station. The distance, and the second distance between the UE and the second base station, perform peer-to-peer handover between the first base station and the second base station, or determine a base station to handover the UE. Specifically, as shown in FIG. 2, the method in this embodiment may include: Step 201: The second base station acquires cell location information sent by the first base station, where the cell location information includes location information of the first cell, where the first cell is a cell where the first base station is located.

Step 202: Determine, according to the cell location information, a location of the first cell.

Step 203: Optimize mobility of the UE according to the cell location information, where the UE is a UE associated with the second base station.

It should be noted that there is an association, that is, the UE may be a UE that is currently connected to the second base station, or the UE may also be a UE that resides in the cell to which the second base station belongs, that is, the UE is in the idle state. Stay in the cell, but does not establish an air interface connection with the second base station.

In this embodiment, the second base station may determine the specific location of the first base station according to the cell location information, that is, the location information of the cell in which the first base station is located, thereby optimizing the mobility of the UE.

Specifically, the second base station may further obtain current location information of the UE, and determine a first distance between the UE and the first base station according to the cell location information and the UE location information. Further, the second base station determines a condition of the UE handover according to the first distance and the second distance, that is, the second base station may determine, according to the first distance between the UE and the first base station, and the second distance between the UE and the second base station. The UE is switched to the base station, or performs the same handover between the first base station and the second base station according to the first distance and the second distance, where the second base station is current and the UE Establish a connected base station.

Further, the cell location information includes location coordinates of the first cell, identity of the first cell, range of the first cell, time of the UE in the first cell, location coordinates of the third cell, identity of the third cell, and At least one of the range of the three cells and the time of the UE in the third cell.

Optionally, the cell location information may further include location information of the third cell, where the third cell is a cell to which the third base station belongs, and the third base station is a base station that is connected before the UE is connected to the first base station.

It should be noted that the UE establishes a connection with the third base station before establishing a connection with the first base station, so that the second base station can determine the moving path and speed of the UE according to the cell location information. For example, according to the time sequence in which the UE establishes a connection with the first base station and the second base station, the mobile path of the UE may be determined, and according to the distance between the third base station and the first base station, and the time of the UE in the cell to which the first base station belongs, and The UE determines the speed of the UE at the time of the cell of the third base station, thereby realizing the mobility optimization of the UE to the UE with higher accuracy.

FIG. 4 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 4, the base station includes: a receiver 41 and a processor 42, where The receiver 41 is configured to acquire cell location information sent by the first base station, where the cell location information includes location information of the first cell, where the first cell is a cell where the first base station is located, and the first base station is a UE that establishes a connection with the second base station. Or camping on a base station connected before the second cell, where the second cell is a cell to which the second base station belongs;

The processor 42 is configured to determine a location of the first cell according to the cell location information.

In this embodiment, the cell location information that is sent by the first base station is obtained by the second base station, where the cell location information includes location information of the first cell, where the first cell is a cell to which the first base station belongs, where the first base station is a base station that is connected to the second base station before the UE establishes a connection or camps on the second cell, and the second cell is a cell to which the second base station belongs, and the second base station determines the location of the first cell according to the location information of the cell, thereby implementing the first The two base stations accurately determine the location of the cell to which the first base station belongs, thereby implementing the mobile station to perform highly accurate mobile optimization for the UE.

Based on the foregoing embodiment, the cell location information is obtained through an X2 interface or an S1 interface. Further, on the basis of the foregoing embodiment, the cell location information further includes location information of the third cell, the third cell is a cell to which the third base station belongs, and the third base station is a base station connected before the UE is connected to the first base station.

Further, based on the foregoing embodiment, the processor 42 is further configured to optimize mobility of the user equipment UE according to the cell location information.

Further, on the basis of the foregoing embodiment, the receiver 41 is further configured to acquire current location information of the UE;

The processor 42 is further configured to determine, according to the cell location information and the current location information of the UE, a first distance between the UE and the first base station, and determine, according to the first distance and the second distance, the base station that the UE will switch, the second distance. For the distance between the UE and the second base station, the second base station is a base station that is currently establishing a connection with the UE; or, according to the first distance and the second distance, the UE is compared between the first base station and the second base station. The second distance is a distance between the UE and the second base station, and the second base station is a base station that currently establishes a connection with the UE.

Further, based on the foregoing embodiment, the cell location information further includes location coordinates of the first cell, a first cell identifier, a first cell range, a time of the UE in the first cell, and a location coordinate of the third cell, At least one of a three-cell identity, a third cell range, and a time of the UE in the third cell.

Further, based on the above embodiment, the processor 42 is further configured to use the cell location information. Information, determine the UE mobile path information.

Further, based on the foregoing embodiment, the location coordinate of the first cell is the first antenna location coordinate of the first cell, and the first antenna is an antenna connected to the base station where the first cell is located.

Further, based on the foregoing embodiment, the location coordinate of the third cell is the third antenna location coordinate of the third cell, and the third antenna is the antenna connected to the base station where the third cell is located.

In this embodiment, the second base station accurately determines the location of the cell to which the first base station belongs, and further implements the mobility optimization of the UE to the UE with higher accuracy.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, when executed, The steps of the foregoing method embodiments are performed; and the foregoing storage medium includes: various media that can store program codes, such as ROM, RAM, disk or optical disk.

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting thereof; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

claims

1. An information exchange method between base stations, characterized by including:

The second base station acquires the cell location information sent by the first base station. The cell location information includes the location information of the first cell. The first cell is the cell to which the first base station belongs. The first base station is the user equipment UE. The base station connected before establishing a connection with the second base station or camping in the second cell, and the second cell is the cell to which the second base station belongs;

The second base station determines the location of the first cell based on the cell location information.

2. The method according to claim 1, characterized in that, the cell location information also includes location information of a third cell, the third cell is a cell to which a third base station belongs, and the third base station is the UE. A base station connected before the first base station.

3. The method according to claim 1 or 2, characterized in that, after the second base station obtains the cell location information sent by the first base station, it further includes:

4. The method according to any one of claims 1-3, characterized in that, before the second base station obtains the cell location information sent by the first base station, it further includes:

The second base station obtains the current location information of the UE.

5. The method according to claim 4, characterized in that, after the second base station obtains the cell location information sent by the first base station, it further includes:

The second base station determines a first distance between the UE and the first base station based on the cell location information and the current location information of the UE;

The second base station determines the base station to switch the UE according to the first distance and the second distance, the second distance is the distance between the UE and the second base station, the second base station Be the base station currently establishing a connection with the UE; or

The second base station performs synchronous switching on the UE between the first base station and the second base station according to the first distance and the second distance, and the second distance is between the UE and the third base station. The distance between two base stations. The second base station is the base station currently establishing a connection with the UE.

6. The method according to any one of claims 3 to 5, characterized in that the cell location information includes the location coordinates of the first cell, the identifier of the first cell, and the range of the first cell. The range, the time when the UE is in the first cell, the location coordinates of the third cell, the identity of the third cell, the range of the third cell, the time when the UE is in the third cell at least one of them.

7. The method according to claim 6, characterized in that the second base station optimizes the mobility of the UE according to the cell location information, including:

The second base station determines the movement path information of the UE based on the cell location information.

8. The method according to claim 6 or 7, characterized in that: the position coordinates of the first cell are the position coordinates of the first antenna of the first cell, and the first antenna is the first The antenna connected to the first base station where the cell is located.

9. The method according to any one of claims 6 to 8, characterized in that: the position coordinates of the third cell are the position coordinates of the third antenna of the third cell, and the third antenna is the The antenna connected to the third base station where the third cell is located.

10. A base station, characterized in that it includes:

A receiver configured to obtain cell location information sent by the first base station. The cell location information includes location information of the first cell. The first cell is a cell to which the first base station belongs. The first base station is a user. The base station to which the equipment UE was connected before establishing a connection with the second base station or camping on the second cell, and the second cell is the cell to which the second base station belongs;

A processor, configured to determine the location of the first cell according to the cell location information.

11. The base station according to claim 10, characterized in that, the cell location information also includes location information of a third cell, the third cell is a cell to which the third base station belongs, and the third base station is the UE. A base station connected before the first base station.

12. The base station according to claim 10 or 11, characterized in that the processor is configured to optimize the mobility of the UE according to the cell location information.

13. The base station according to any one of claims 10-12, characterized in that,

The receiver is also used to obtain the current location information of the UE.

14. The base station according to claim 13, wherein the processor is further configured to determine, based on the cell location information and the current location information of the UE, the relationship between the UE and the first base station. the first distance between them; determine the base station to which the UE will switch based on the first distance and the second distance, the second distance is the distance between the UE and the second base station, and the third The second base station is the base station that currently establishes a connection with the UE; or, according to the first distance and a second distance, performing synchronous handover between the first base station and the second base station for the UE, where the second distance is the distance between the UE and the second base station, and the second The base station is a base station that is currently connected to the UE.

15. The base station according to any one of claims 12 to 14, wherein the cell location information includes the location coordinates of the first cell, the identifier of the first cell, and the range of the first cell. and the time when the UE is in the first cell, the location coordinates of the third cell, the identity of the third cell, the range of the third cell, and the time when the UE is in the third cell. of at least one.

16. The base station according to claim 15, wherein the processor is further configured to determine the UE movement path information based on the cell location information.

17. The base station according to claim 15 or 16, characterized in that: the position coordinates of the first cell are the position coordinates of the first antenna of the first cell, and the first antenna is the first The antenna connected to the first base station where the cell is located.

18. The base station according to any one of claims 15 to 17, characterized in that, the position coordinates of the third cell are the position coordinates of the third antenna of the third cell, and the third antenna is the The antenna connected to the third base station where the third cell is located.