KR101507071B1 - Method and apparatus for processing configuration of automatic neighbor relation in mobile communication network environment - Google Patents

Abstract

The present invention relates to a method and apparatus for processing an automatic neighbor relationship configuration considering a conflict between PCIs in a mobile communication network environment.
According to the present invention, there is provided a method of configuring an Automatic Neighbor Relation (ANR) in a mobile communication network environment, the method comprising the steps of: (a) receiving a measurement report message from a terminal measuring a signal quality of a neighboring cell; (b) extracting PCI information of the neighboring cell from the received measurement report message and determining whether it is a PCI included in a neighbor cell list (NCL); (c) if the PCI information of the neighboring cell is included in the neighbor cell list, determining whether the PCI information is a duplicated PCI or a unique PCI within a predetermined range around the base station; And (d) if the PCI information of the neighboring cell is duplicated PCI, checking handover statistical information of a cell corresponding to PCI to determine whether to perform an automatic neighbor relation operation, A method for processing an automatic neighborhood relationship configuration in an environment is disclosed.

Description

TECHNICAL FIELD [0001] The present invention relates to a method and an apparatus for processing an automatic neighbor relationship in a mobile communication network environment,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a handover processing technique in a mobile communication network environment, and more particularly, to a method and an apparatus for processing an automatic neighbor relation in consideration of a conflict between PCIs.

As a method for managing Neighbor Lists in a mobile communication system, a method in which an operator sets up a neighbor list for a base station in a Naver list management server is generally used. However, the above method is disadvantageous in that it requires management of the operator when the neighbor cell of the base station is changed or when the base station is moved, and it is difficult to optimize the neighbor list when the output of the neighboring cell is changed.

In addition, recently, a femtocell service is provided to a mobile communication system in order to provide a high-speed data service while solving a service problem in a radio wave shadow area. Here, the femtocell refers to a service area of a small base station connected to a mobile communication core network through an indoor broadband network. Such a small base station is installed in an office or indoors so as to provide a smooth communication service in a radio wave shaded area or to be additionally provided in an area where a communication load is large, thereby distributing communication service processing load.

In this way, unlike the conventional method, since the neighboring cells of the BS vary from time to time, there is a problem that the conventional Naver list management method can no longer be effectively managed. Accordingly, a self organizing network (SON) system has been developed and used to manage the relationship of neighboring cells in the base station in consideration of the neighboring cell environment which changes from time to time.

For reference, Korean Patent Laid-Open Publication No. 2011-0011145 (entitled " Device and method for automatic neighbor relationship configuration and optimization in wireless communication system ") discloses a configuration related to self-constituting network and automatic neighbor relation configuration technique.

In such a self-organizing network system, Naver list management is also automatically managed by the base station through Automatic Neighbor Relation (ANR) configuration processing. The neighbor cell list (NCL) managed through the ANR process is processed based on the physical cell identifier (PCI). Since the PCI that can identify the cell is limited, the cell having the same PCI Can exist.

In the conventional ANR configuration processing operation, if the PCI reported in the terminal is PCI existing in the neighbor cell list managed by the base station, in the case of known PCI, the neighbor cell list according to the PCI already set is used, And performs ANR configuration processing operation for the corresponding PCI only when it is Unknown PCI.

However, as described above, there may exist cells having the same PCI around the base station. Therefore, even if a new cell is not registered in the neighbor cell list, if it is the same as the PCI of the registered cell, And there is a problem that the ANR configuration operation process is not performed. That is, even though a new cell is reported, ANR processing for the corresponding cell is not performed, and the neighbor cell list is not managed correctly, which leads to a problem that communication service failure such as handover failure eventually occurs.

The present invention has been devised to solve the problems as described above, and it is an object of the present invention to provide a mobile communication network environment capable of correctly distinguishing cells having the same PCI around the base station in the ANR configuration processing for handover, And an object of the present invention is to provide a method and an apparatus for processing an automatic neighbor relationship configuration.

Other objects and advantages of the present invention will be described hereinafter and will be understood by the embodiments of the present invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the appended claims.

According to another aspect of the present invention, there is provided a method of configuring an automatic neighbor relationship (ANR) in a mobile communication network environment, the method comprising: A method comprising: a) receiving a measurement report message from a terminal measuring a signal quality of a neighboring cell; (b) extracting PCI information of the neighboring cell from the received measurement report message and determining whether it is a PCI included in a neighbor cell list (NCL); (c) if the PCI information of the neighboring cell is included in the neighbor cell list, determining whether the PCI information is a duplicated PCI or a unique PCI within a predetermined range around the base station; And (d) if the PCI information of the neighboring cell is a duplicated PCI, checking handover statistical information of a cell corresponding to the PCI to determine whether to perform an automatic neighbor relationship configuration operation.

According to another aspect of the present invention, there is provided a base station apparatus for configuring Automatic Neighbor Relation (ANR) in a mobile communication network environment, the base station apparatus comprising: a message receiving module for receiving a measurement report message measuring a signal quality of a neighboring cell from a terminal; A PCI checking module for extracting PCI information of the neighboring cell from the measurement report message received by the message receiving module and determining whether the PCI is included in a neighbor cell list (NCL); A duplicate PCI discrimination module for determining whether the PCI information is a duplicated PCI or a unique PCI within a predetermined peripheral range if it is determined that the PCI information is included in the neighbor cell list; A redundant PCI processing module for inquiring the handover statistical information of a cell corresponding to the PCI and determining whether to perform an automatic neighbor relation operation if the PCI information is determined to be a redundant PCI in the redundant PCI discrimination module; And an ANR configuration operation module for performing X2 Setup processing with the corresponding PCI cell according to the 3GPP standard to generate or update a neighbor cell list, and an automatic neighbor relationship configuration base station apparatus in the mobile communication network environment.

According to still another aspect of the present invention, there is provided a recording medium on which a program for performing Automatic Neighbor Relation (ANR) configuration processing at a base station in a mobile communication network environment is recorded, A procedure for receiving a report message, extracting PCI information of the neighboring cell from the received measurement report message, and determining whether the neighboring cell is a PCI included in a neighbor cell list (NCL) When the PCI information is included in the neighbor cell list, it is determined whether the PCI information is a duplicated PCI or a unique PCI within a predetermined range around the base station, and if the PCI information of the neighboring cell is a duplicated PCI , The handover statistical information of the cell corresponding to the PCI is inquired. If the handover performance value is equal to or higher than the predetermined reference level, Without performing the configuration operation, a predetermined reference level equal to or less than the case, automatic neighbor relation configuration operable to read a computer storing a program for executing a procedure for performing a recording medium is provided.

According to the present invention, even when there is a cell having the same PCI in the vicinity of the base station, it is determined whether there is a duplicated PCI in advance, and in case of a duplicate PCI, the ANR configuration operation is performed by accurately dividing each cell through the handover statistical information And it is possible to prevent the ANR malfunction due to the presence of the same PCI and the collision problem between the same PCI.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention below, And should not be construed as limiting.
1 is a block diagram of a system in which an automatic neighbor relationship configuration processing method is implemented in a mobile communication network environment according to an embodiment of the present invention.
2 is a block diagram of an automatic neighbor relation processing base station apparatus in a mobile communication network environment according to an embodiment of the present invention.
3 is a diagram illustrating an example of a neighbor cell list included in an automatic neighbor relationship processing base station apparatus in a mobile communication network environment according to an exemplary embodiment of the present invention.
4 is a diagram illustrating an example of a PCI list included in an automatic neighbor relationship configuration processing base station apparatus in a mobile communication network environment according to an embodiment of the present invention.
5 is a diagram illustrating a procedure of an automatic neighbor relationship configuration processing method in a mobile communication network environment according to an embodiment of the present invention.
FIG. 6 is a diagram illustrating a procedure of a method of processing an automatic neighbor relationship configuration in a mobile communication network environment according to an exemplary embodiment of the present invention, with reference to a base station.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be interpreted in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined. Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a block diagram of a system in which an automatic neighbor relationship configuration processing method is implemented in a mobile communication network environment according to an embodiment of the present invention.

Referring to FIG. 1, a system in which the present invention is implemented includes a plurality of base stations 100 installed in a main area, a plurality of cells 200 included in each of the base stations 100, 200 and a core network 300 for providing communication services.

The system in which the present invention is implemented may include an LTE system according to the 3GPP standard, a VoLTE system, and further, a WCDMA system may be included. Of course, various wireless communication systems based on a base station and a cell may be included.

The base station 100 is installed in a main area and performs wireless connection processing of a mobile communication terminal according to each communication method. The base station 100 may include and manage a plurality of cells 200 underneath. The base station 100 is named eNode B (eNB) in the LTE system and is called Node B in the 3G WCDMA system. The base station 100 is connected to a gateway and an MME of the core network 300 and provides a communication service to a mobile communication terminal located in a coverage area. The base station 100 provides a radio interface to a mobile communication terminal and provides radio resource management functions such as radio bearer control, radio admission control, dynamic radio resource allocation, load balancing, and inter-cell interference control.

In addition, the base station 100 may automatically generate and update a neighbor list according to the support of a self organizing network (SON), directly connect with other base stations 101, 102, and 103, 300, the control signals between the base stations can be exchanged. This processing function is called Automatic Neighbor Relation (ANR) configuration.

The base station 100 uses a protocol according to the S1 interface at the time of connection for a control signal with the gateway and the MME of the core network 300. [ As described above, when the handover is performed, the base station 100 can directly connect to other base stations 101, 102, and 103 to send and receive control signals without passing through the core network 300. At this time, .

The cell 200 is a divided coverage area in which a mobile communication terminal is directly connected to the base station 100 under the wireless connection. The cell 200 may be provided as one cell for one base station 100, but is generally divided into a plurality of cells in one base station 100. The cell 200 includes a femtocell. In addition, each cell 200 is assigned an identification number, and a physical cell ID (PCI) used for handover and a neighbor list is given. The PCI can distinguish only a limited number of cells in the system, so there may be cells with overlapping PCI. As shown in the figure, the cell 4 204 of the first base station 101 and the cell 5 205 of the third base station can have the same PCI (PCI6). In the system, a global cell identifier (CGI) is assigned and operated to distinguish all the cells. However, in the handover process and the Naver list, PCI is generally used.

The core network 300 is a network of a mobile communication system for providing data services and voice services, and is called an evolved packet core-network (EPC) in an LTE system. The core network of an LTE system includes various entities such as a gateway and an MME. Also, in the core network 300, there is a management node for self-configuring network function processing, which is referred to as an OAM 310. The OAM 310 may provide a neighbor cell list NCL to the base stations 100 or provide a list of PCIs included in a predetermined region around the base station 100 according to a request from the base station.

The base station 100 according to the present invention has a function and a procedure for performing a normal ANR operation even for a cell having the same PCI.

Hereinafter, a configuration of a base station apparatus according to the present invention having a function capable of performing a normal ANR operation even for a cell having the same PCI will be described in detail.

2 is a block diagram of an automatic neighbor relation processing base station apparatus in a mobile communication network environment according to an embodiment of the present invention.

2, the base station 100 according to the present invention includes a message receiving module 110, a PCI checking module 120, a redundant PCI determining module 130, a redundant PCI processing module 140, an ANR operation module 140, A PCI list management module 170 and a database 160. [

The message receiving module 110 receives a measurement report (MR) measuring a signal quality of a neighboring cell from the mobile communication terminal. That is, when the mobile communication terminal under the control of the base station measures and reports the signal strength of neighboring neighboring cells in order to perform handover, the mobile communication terminal receives the signal strength. The measurement report message includes PCI information of an adjacent cell.

The PCI checking module 120 checks whether the PCI of the adjacent cell included in the measurement report message received by the message receiving module 110 is a known or unknown PCI. That is, it is determined whether the received PCI information is a PCI included in a known neighbor cell list (NCL) or not included. The PCI check module 120 compares PCI with a neighbor cell list to distinguish whether it is a known PCI or an unknown PCI. If the PCI is unknown, a new cell appears around the corresponding base station. And performs an automatic neighbor relation configuration process through the ANR operation module 150. [

If the PCI check module 120 determines that the PCI is a known PCI, the duplicate PCI determining module 130 determines whether the corresponding PCI is a duplicate PCI or a unique PCI. That is, it is determined whether the corresponding PCI is a duplicated PCI or a unique PCI among the corresponding base station peripheral PCI list managed by the database 160 to be described later. At this time, it is checked whether or not the flag is duplicated through the flag set in the PCI list. If there is an overlapping PCI in the PCI list, a flag indicating redundancy is set in the PCI. The flag setting process and the PCI list management are performed through the PCI list management module 170 to be described later.

In addition, when the duplicate PCI determination module 130 determines that the PCI is duplicated, if the PCI is the only PCI that is not duplicated, the PCI cell is the only one in the vicinity of the corresponding base station, and the connection setting is established through the ANR process The existing connection establishment process is used without any additional ANR operation. On the other hand, in the case of overlapping PCI, since there is at least one cell having the same PCI as the corresponding PCI exists in the periphery, it is impossible to grasp exactly which cell the PCI means.

When the redundant PCI processing module 140 determines that the redundant PCI is determined in the redundant PCI determination module 130, the redundant PCI processing module 140 determines whether or not the ANR process is performed on the cells having the same PCI. That is, whether the cell corresponding to the PCI received in the MR is a cell of a currently connected neighbor cell list or a new cell not present in the neighbor cell list is discriminated, and the ANR process is determined according to the discrimination. The redundant PCI processing module 140 determines whether the handover value is greater than or equal to a predetermined level by checking the handover statistical information of the target PCI, and determines that the ANR operation is not performed when the handover value is greater than a predetermined level , And determines to perform the ANR operation when it is less than the predetermined level. At this time, the handover statistical information is inquired by the core network and can be inquired through the OAM 310 of the core network. In addition, the reference handover value is determined by the operator and expressed as a percentage.

Here, if the handover value is equal to or higher than a certain level, it is determined that the handover process is performed smoothly. Therefore, if the handover value is less than a certain level, It is determined that the cell is not an unknown cell other than the cell of the currently connected neighbor cell list. Therefore, it is determined to perform ANR processing again for the new cell.

The ANR operation module 150 performs the automatic neighbor relationship configuration operation according to the results of the PCI check module 120, the redundant PCI discrimination module 130, the redundant PCI processing module 140, and the like. The ANR operation module 150 performs an X2 setup process with the corresponding PCI cell to generate or update a neighbor cell list when the operation proceeds. Also, the ANR operation module 150 performs an ANR operation according to the 3GPP standard. When an ANR operation is performed on a new cell (e.g., Cell 5 (205)) among the cells having the same PCI, the global cell ID of the corresponding new cell is searched for thereby correctly distinguishing cells and performing ANR operation .

The PCI list management module 170 receives and manages a PCI list of cells existing within a predetermined range around the base station 100 from the core network 300. The PCI list management module 170 searches for the presence or absence of overlapping PCIs, And sets a flag to the flag. When duplicate PCI exists, the flag is set to "1" for the corresponding PCI, and the flag is set to "0" for the only PCI that is not duplicated. The PCI list management module 170 receives and manages a list at predetermined time intervals of a predetermined period.

The database 160 plays a role of storing and managing various information used in the base station. The database 160 includes a neighbor cell list 162 and a PCI list 164.

FIG. 3 is a diagram illustrating an example of a neighbor cell list included in an automatic neighbor relationship processing base station apparatus in a mobile communication network environment according to an embodiment of the present invention. FIG. 4 is a block diagram of a mobile communication network according to an embodiment of the present invention. FIG. 8 is a diagram showing an example of a PCI list provided in the automatic neighbor relationship configuration processing base station apparatus in the environment.

Referring to FIG. 3 and FIG. 4, information stored and managed in the database 160 according to the present invention will be described.

First, referring to FIG. 3, a neighbor cell list 162 is stored as information. Here, the stored neighbor cell list is a neighbor cell list for cells connected with X2 based on the second base station 102 in FIG. That is, the PCI information of the lower cells included in the first base station 101 and the second base station 102 is stored in the neighbor cell list 162 of the database 160. 'PCI 6' (A) is the PCI of the Cell 4 204 connected to the second base station 102.

Since the connected neighbor cell list is recorded in the neighbor cell list 162, when a new cell is established through the new ANR operation or connection setup is canceled in the existing neighbor cell, The neighbor cell list is changed.

Referring to FIG. 4, a PCI list 164 is stored as information. The PCI list 164 is provided to the core network 300 or the OAM 310 through the PCI list management module 170, do. In the provided PCI list, a flag is set according to whether or not each PCI is duplicated. That is, the flag is set to "1" for PCIs that overlap among the PCIs within a predetermined range around the base station, and the flag is set to "0" for PCIs that do not overlap.

Assuming the example shown in FIG. 1, among the cells within a predetermined range based on the second base station 102, a cell in which PCI is duplicated is 'PCI 6' (B) of Cell 4 204 and Cell 5 205 , The flag is set to "1 ". The PCI list 164 is stored separately from the neighbor cell list 162, and is used to determine whether PCI is duplicated.

5 is a diagram illustrating a procedure of an automatic neighbor relationship configuration processing method in a mobile communication network environment according to an embodiment of the present invention.

5, in the automatic neighbor relationship configuration processing method according to the present invention, the base station first receives the PCI list information within a predetermined range around the base station from the communication system or the core network (S10)

Upon receiving the PCI list information, the base station proceeds to a process of checking overlapping PCI in the PCI list and setting it to a flag. In this way, the PCI list in which the flag indicating whether or not the duplication is set is separately stored and managed (S20)

Next, a procedure is performed to receive a measurement report message (MR) from the mobile communication terminal, which measures the signal strength quality of the neighboring cell. When the MR receives the MR message, the base station extracts the PCI of the neighboring cell included in the MR message (S30)

The PCI information thus extracted is compared with the neighbor cell list NCL, and a process of distinguishing whether it is a known PCI or a PCI is determined according to whether the PCI is included in the NCL. At this time, if it is determined that the PCI is unknown, i.e., PCI that is not included in the NCL, the general ANR procedure according to the new PCI discovery is performed. In other words, the process of establishing the X2 connection with the cell corresponding to the new PCI is performed and the process of updating the NCL is performed (S35)

On the other hand, if it is determined that the PCI is included in the known PCI, that is, the NCL, it may be either a cell that has already been established or a new cell having the same PCI as the cell to which the PCI is already connected. Proceed with the procedure. As a procedure for distinguishing this, the above-mentioned PCI list is checked and a procedure for checking whether the PCI is a duplicated PCI is performed. At this time, the flag set in the corresponding PCI is inquired to check whether the flag is duplicated (S40)

If it is determined that the PCI is the only PCI included in the NCL other than the duplicated PCI, it is determined that the cell is already connected, the ANR operation is not performed, and the established connection is maintained (S45)

On the other hand, as a result of the flag check, if the PCI is duplicated, it is impossible to distinguish whether the corresponding cell is a connected cell included in the NCL or a new cell not included in the NCL. As an additional procedure for distinguishing this, the handover statistical information is requested to the core network 300 or the OAM 310 and the handover statistical information is used to determine whether the PCI of the MR message is a cell included in the NCL Cell.

That is, the handover statistic value of the cell included in the NCL corresponding to the PCI is checked. When the handover metric value is above the predetermined reference level, it is determined that the corresponding PCI is the cell included in the NCL. Cell. (S50)

If it is determined that the overlapping PCI cell is a cell included in the NCL through the handover statistical information, control is performed so as not to perform a separate ANR operation (S45). If a redundant PCI cell is a new cell not included in the NCL , A procedure is performed to control the cell to perform a new ANR operation (S35)

Through this procedure, even when there is a cell having a redundant PCI in the vicinity of the base station, the accurate neighbor cell list can be maintained by correctly performing the ANR operation by dividing the cell, and the problem of collision due to redundant PCI There is an effect that can be prevented.

FIG. 6 is a diagram illustrating a procedure of a method of processing an automatic neighbor relationship configuration in a mobile communication network environment according to an exemplary embodiment of the present invention, with reference to a base station.

This embodiment will be described on the assumption of the example of Fig. 1 described above. That is, it is assumed that the first base station 101 and the second base station 102 are connected and the cell 4 204 and the cell 5 205 have the same PCI. Here, it is assumed that a UE under the control of the second base station 102 transmits a PCI of the cell 5 (205) as a measurement report message.

6, the second base station receives the measurement report message including the PCI of the cell 5 205 from the MS as in the above-described assumption. (1)

After receiving the measurement report message, the PCI information included in the message is extracted. At this time, PCI information 'PCI6' of the cell 5 (205) is extracted. (2)

The second base station compares the extracted PCI information (PCI6) with the neighbor cell list to see if there is the same PCI. That is, a procedure for checking whether or not it is known PCI is performed. In this case, since the cell 4 204 has the same PCI as in the above-mentioned assumption, the PCI of the cell 4 204 already connected is present in the neighbor cell list of the second base station. (3)

Therefore, as a result of comparison with the neighbor cell list, there is a procedure for confirming that the PCI is already known because there is the same PCI. (4)

It is confirmed that the PCI is already known, and a procedure of checking a flag for checking whether the PCI is duplicated is performed. That is, a PCI list in a predetermined area around the second base station is received, and a process of confirming a flag of the PCI in a PCI list managed by setting a flag for overlapping PCI is performed. (5)

As in the above assumption, since the cell 4 204 and the cell 5 205 both have the same PCI as 'PCI6', "1" indicating PCI redundancy is set in the flag. As a result of the flag check, it is confirmed that the flag indicating duplication is set, and it is confirmed that the PCI is the duplicated PCI. (6)

If it is determined that there is a duplicate PCI, a procedure for inquiring handover statistical information is performed to check whether the target cell of the PCI is a cell included in the NCL or a new cell. At this time, the handover statistical information is inquired from the core network or the OAM. In addition, the handover statistical information about the cells included in the NCL is inquired when the handover statistic is inquired. (7)

According to the above-described assumption, since the PCI is the PCI of the cell 5 205, the handover statistic level of the cell 4 204 is inquired that the level is below a predetermined reference level. (8)

The handover statistical information for the cell included in the NCL is confirmed to be below the reference level,

The connection setup of the existing cell 4 204 is canceled according to the execution of the new ANR operation, the X2 setup procedure is executed for the new cell 5 205, connection setup processing is performed, and a procedure of updating the neighbor cell list is performed . Here, at the time of the connection setting processing for the cell 5 (205), the global cell ID (CGI) for the cell 5 (205) is additionally inquired to distinguish the cell 4 (204) and the cell 5 (10)

In this way, even when the PCI is duplicated, it is possible to distinguish the corresponding cell precisely and control the performance of the ANR operation.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk).

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. In addition, the features described in the individual embodiments herein may be combined and implemented in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

It is to be understood that, although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that a series of sequential orders, or all described operations, . In some circumstances, multitasking and parallel processing may be advantageous. It should also be understood that the division of various system components in the above embodiments does not require such distinction in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. The present invention is not limited to the drawings.

100: base station
200: cell
300: Core Network

Claims (16)

A method of configuring an Automatic Neighbor Relation (ANR) in a mobile communication network environment,
(a) receiving a measurement report message from a terminal measuring a signal quality of a neighboring cell;
(b) extracting PCI information of the neighboring cell from the received measurement report message and determining whether it is a PCI included in a neighbor cell list (NCL);
(c) if the PCI information of the neighboring cell is included in the neighbor cell list, determining whether the PCI information is a duplicated PCI or a unique PCI within a predetermined range around the base station; And
(d) if the PCI information of the neighboring cell is a duplicated PCI, checking handover statistical information of a cell corresponding to the PCI to determine whether to perform an automatic neighbor relationship configuration operation, and Automatic Neighbor Relationship Configuration Processing Method in. The method according to claim 1,
The step (d)
And performs an automatic neighbor relationship configuration operation when the handover performance value is equal to or higher than a predetermined reference level and does not perform an automatic neighbor relationship configuration operation and is equal to or less than a predetermined reference level. Automated Neighborhood Relationship Processing in an Environment. The method according to claim 1,
Prior to step (a)
(1) receiving a PCI list within a predetermined range around the base station from the system; And
(2) The base station further comprises a step of searching for duplicated PCIs among the provided PCI lists in the provided range, and setting a flag indicating duplication in the searched PCI information. How to process neighbor configuration. The method of claim 3,
The step (c)
And determining whether there is a redundant PCI through the flag set in the PCI. The method of claim 3,
The system for receiving a PCI list in step (1) or inquiring handover statistical information in step (d)
Wherein the mobile communication network is a self organizing network (SON) system. The method of claim 3,
In the PCI,
Wherein the physical cell ID is a physical cell ID. The method according to claim 1,
In the step (d)
And if it is a duplicated PCI, the handover statistical information is inquired about the cell of the PCI included in the neighbor cell list. The method according to claim 1,
Wherein the automatic neighbor relationship configuration operation comprises:
Wherein the mobile node is an operation of generating and updating a neighbor cell list by proceeding with X2 Setup processing with the corresponding PCI cell according to the 3GPP standard. The method according to claim 1,
After the step (b)
And performing an automatic neighbor relationship configuration operation when the PCI information of the neighbor cell is not included in the neighbor cell list. The method according to claim 1,
After the step (c)
Wherein when the PCI information of the neighboring cell is the only PCI, the automatic neighbor relationship configuration operation is not performed. The method according to claim 1,
After the step (d)
As a result of the determination, when performing the automatic neighbor relationship configuration operation,
A cell global ID (CGI) for each cell corresponding to the redundant PCI is searched, and the cell corresponding to the PCI included in the existing neighbor cell list is included in the neighbor cell list through the inquired global cell identifier And performing an automatic neighbor relation operation with a cell corresponding to a non-PCI cell in the mobile communication network environment. 1. A base station apparatus for configuring an Automatic Neighbor Relation (ANR) in a mobile communication network environment,
A message reception module for receiving a measurement report message measuring a signal quality of a neighboring cell from the terminal;
A PCI checking module for extracting PCI information of the neighboring cell from the measurement report message received by the message receiving module and determining whether the PCI is included in a neighbor cell list (NCL);
A duplicate PCI discrimination module for determining whether the PCI information is a duplicated PCI or a unique PCI within a predetermined peripheral range if it is determined that the PCI information is included in the neighbor cell list;
A redundant PCI processing module for inquiring the handover statistical information of a cell corresponding to the PCI and determining whether to perform an automatic neighbor relation operation if the PCI information is determined to be a redundant PCI in the redundant PCI discrimination module; And
And an ANR configuration operation module for performing an X2 Setup process with the corresponding PCI cell according to 3GPP standards to generate or update a neighbor cell list. 13. The method of claim 12,
Wherein the ANR configuration operation module comprises:
Wherein the PCI check module is operated when it is determined that the PCI check module is not included in the neighbor cell list or performs the automatic neighbor relation operation in the duplicate PCI processing module, Wherein the controller is controlled not to operate in a case where it is determined not to perform the automatic neighbor relationship configuration operation in the redundant PCI processing module. 13. The method of claim 12,
The redundant PCI processing module includes:
And determines to perform an automatic neighbor relationship configuration operation when the handover performance value is equal to or higher than a predetermined reference level, Wherein the mobile communication network environment is a mobile communication network environment. 13. The method of claim 12,
And a PCI list management module for receiving a PCI list within a predetermined peripheral range from the system and searching for PCIs in the PCI list and setting a flag indicating duplication in the retrieved PCI information. In the automatic neighbor relation processing base station apparatus. 1. A recording medium on which a program for performing Automatic Neighbor Relation (ANR) configuration processing at a base station in a mobile communication network environment is recorded,
Comprising: receiving a measurement report message from a terminal measuring a signal quality of a neighboring cell;
A step of extracting PCI information of the neighboring cell from the received measurement report message and determining whether the packet is included in a neighbor cell list (NCL)
If the PCI information of the neighbor cell is included in the neighbor cell list, determining whether the PCI information is a duplicated PCI or a PCI within a predetermined range around the base station,
If the PCI information of the neighboring cell is a duplicated PCI, handover statistical information of a cell corresponding to the PCI is inquired, and if the handover performance value is equal to or higher than a predetermined reference level, And a step of performing automatic neighbors configuration operation when the number of the neighboring nodes is equal to or less than the reference level.

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