KR20200118390A - Method and apparatus for acquiring cell identifier in radio communication system - Google Patents

Abstract

Provided is a method for obtaining an identifier (ID) of a new cell through an apparatus in a wireless communication system. The method includes the steps of: receiving information related with the new cell from user equipment (UE); if the new cell is determined not to be set as a neighbor cell based on the information related with the new cell, obtaining an evolved universal terrestrial radio access (EUTRA) cell global ID (ECGI) of the new cell; determining whether a public land mobile network (PLMN) ID of the ECGI is included in a mapping table between a basic PLMN ID and a shared PLMN ID; and obtaining an ID of the new cell if the PLMN ID of the ECGI is included in the mapping table. The present invention can solve malfunction of ANR which may occur if operated so as to block unnecessary system information.

Description

A method and apparatus for obtaining a cell identifier in a wireless communication system {METHOD AND APPARATUS FOR ACQUIRING CELL IDENTIFIER IN RADIO COMMUNICATION SYSTEM}

The present invention relates to a method and apparatus for obtaining a cell identifier in a wireless communication system, and more particularly, to a method and apparatus for obtaining a cell identifier in an environment where a plurality of operators share a cell.

In the field of self-configuration, when a new or additional base station is installed, parameters necessary for the initial operation of the base station are collected and analyzed by itself to identify neighboring base stations in the initial boot-up process of the base station and before operation This is a function that automates procedures such as connection setup.

In the operation of the self-configuration, power is applied to the base station and connected to a transmission link, and then self-detection functions are performed after basic hardware self-verification. The self-detection function includes functions of detecting a transport type and a length of an antenna cable, and automatically adjusting a receiver path. After performing the self-detection function, the base station establishes a physical transmission link and connects with a DHCP (Dynamic Host Configuration Protocol)/DNS (Domain Name System) server to use the IP address, serving gateway, and MME (Mobile Mobility Entity), Obtains information about the IP address of related equipment or services such as configuration server. After completing this process, the base station can establish a secure tunnel for use on the S1 and X2 links, and is ready to communicate with the storage server to obtain new configuration parameters. Neighbor relationship setting may be selectively performed through an automated function.

ANR (Automatic Neighbor Relation; hereinafter referred to as ANR) aims to minimize or eliminate the work on neighbor information as much as possible when installing a new base station and optimizing neighbor information. The ANR function provides an automated method in obtaining and setting neighbor information to another base station or a neighboring cell from a base station or access cell to which the user terminal is currently connected. In addition, for the purpose of handover use, an X2 interface that supports an interface between base stations in LTE (Long Term Evolution) is automatically set.

Evolved Universal Terrestrial Radio Access (EUTRA) cell global identifier (ECGI: Eutra Cell Global ID: hereinafter referred to as ECGI) required to set the X2 interface, cell global identifier (CGI: Cell Grobal) Identity is hereinafter referred to as CGI.) and Global Inodeby ID (GEI: Grobal eNB ID hereinafter referred to as GEI) will be described through the following table.

Table 1 is a table showing the relationship between ECGI, CGI, and GEI.

EUTRA CELL GLOBAL ID (ECGI) PLMN ID CELL GLOBAL ID(28bit) Mobile country code Mobile network code eNB ID (20bit) Cell ID(8bit) GLOBAL eNB ID PLMN ID
eNB ID Mobile country code Mobile network code

The ECGI consists of the first public land mobile network identifier (Public Land Mobile Network ID; hereinafter referred to as PLMN ID) and CGI of the broadcast public land mobile network list (Broadcast Public Land Mobile Network ID LIST; hereinafter referred to as BPLMN LIST). do. The BPLMN LIST represents a list of PLMN IDs supported by a corresponding cell. Typically, the first PLMN ID is composed of a PLMN ID of a global enhanced base station (enhanced Node B; hereinafter referred to as an eNB) managing a corresponding cell. The PLMN ID consists of a country code and a network code. In addition, the CGI is composed of an eNB ID and a cell ID, and the cell ID and eNB ID included in the CGI are 8 bits and 20 bits. The GEI is composed of an eNB's PLMN ID and an eNB ID. For example, assuming that a first cell is operated by a first eNB and a second cell is operated by a second eNB, in order for the first cell to additionally manage the second cell as a neighboring cell, the ECGI of the second cell is included. A CGI and a BPLM ID of the 2eNB are required.

However, in recent years, in order to exclusively use the allocated frequency band, a carrier that shares and uses a cell does not broadcast information on the PLMN ID of a shared cell. That is, since the second cell only broadcasts its own PLMN ID except for the PLMN ID currently operated by the second eNB, the first cell acquires only the PLMN ID of the second cell. Therefore, the first cell has a problem in that the handover operation fails because the BPLM ID of the second eNB required for establishing X2 is recognized as the PLMN ID of the second cell.

The present invention provides a method and apparatus for obtaining a cell identifier in a wireless communication system.

In addition, the present invention provides a method and apparatus for obtaining a cell identifier in an environment where a plurality of operators share a cell in a wireless communication system.

In addition, the present invention provides a method and apparatus for registering a neighbor relationship by obtaining a cell identifier in an environment in which a plurality of operators share a cell in a wireless communication system.

The present invention proposes a method of obtaining an identifier (ID) of a new cell by a source enhanced base station (eNB: enhanced node B) in a wireless communication system, and the method includes the source eNB being a user terminal (UE: receiving information related to the new cell from (user equipment); When identifying that the new cell is not set as a neighboring cell based on the information related to the new cell, the source eNB is an evolved universal terrestrial radio access (EUTRA) cell global ID (ECGI) of the new cell. : The process of acquiring EUTRA cell global ID); The source eNB includes the ECGI's public land mobile network (PLMN) ID in a mapping table between a basic PLMN ID and one or more shared PLMN IDs of cells shared by the source eNB The process of detecting whether it has been done; And when the PLMN ID of the ECGI is included in the mapping table, the source eNB obtains the ID of the new cell.

The present invention proposes a method for a UE to support obtaining a cell ID of a source cell in a wireless communication system, and the method includes a process of detecting a new cell, and reporting information on the new cell to the source cell so that the source cell is It characterized in that it includes a process of obtaining a cell ID.

The present invention proposes a method in which an evolved packet core (EPC) in a wireless communication system supports obtaining a cell ID of a source cell, and the method is based on a PLMN ID of an ECGI of a new cell different from the source cell. And providing an X2 internet protocol (IP) address of the new cell to the source cell to the source cell according to whether it is included in the mapping table between the PLMN and the shared PLMN.

In the present invention, a (source) enhanced base station (eNB: enhanced node B) in a wireless communication system is proposed, and the source eNB includes: a receiver for receiving information related to a new cell from a UE; And a controller, wherein the controller, when identifying that the new cell is not set as a neighboring cell based on the information related to the new cell, obtains an ECGI of the new cell, and the PLMN ID of the ECGI is a basic PLMN ID And one or more shared PLMN IDs of cells shared by the source eNB are included in the mapping table, and if the PLMN ID of the ECGI is included in the mapping table, the ID of the new cell is obtained do.

In the present invention, a UE that supports obtaining a cell ID of a source cell in a wireless communication system is proposed, and the UE detects a new cell and reports information on the new cell to the source cell, so that the source cell receives the cell ID. It characterized in that it comprises a control unit for obtaining.

In the present invention, an EPC that supports obtaining a cell ID of a source cell in a wireless communication system is proposed, wherein the EPC is a PLMN ID of an ECGI of a new cell different from the source cell is included in the mapping table between the basic PLMN and the shared PLMN. And a control unit that provides the source cell with an X2 IP address of the new cell to the source cell according to whether or not.

The present invention provides a method and apparatus for solving an ANR malfunction that occurs when the PLMN ID of an eNB is used as a PLMN ID of a cell during handover, and is operated to prevent unnecessary system information.

1 is a diagram showing a relationship between ECGI, CGI and GEI in the first embodiment;
2 is a diagram showing an operation process of the system according to the first embodiment;
3 is a diagram showing a relationship between ECGI, CGI, and GEI in the second embodiment;
Fig. 4 is a diagram showing an operation process of the system according to the second embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, it should be noted that only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to obscure the subject matter of the present invention.

The present invention proposes a method and apparatus for obtaining a cell identifier in a wireless communication system.

In addition, the present invention proposes a method and apparatus for obtaining a cell identifier in an environment where a plurality of operators share a cell in a wireless communication system.

In addition, the present invention provides a method and apparatus for registering a neighbor relationship by obtaining a cell identifier in an environment in which a plurality of operators share a cell in a wireless communication system.

On the other hand, in the following description, the method and apparatus for obtaining a cell identifier proposed in the present invention is a long term evolution advanced (LTE-A, hereinafter referred to as'LTE-A') mobile communication system as an example. Although described above, the method and apparatus for obtaining a cell identifier proposed in the present invention include high speed downlink packet access (HSDPA, hereinafter referred to as'HSDPA') as well as the LTE-A mobile communication system. The system and the high speed uplink packet access (high speed uplink packet access: HSUPA, hereinafter referred to as'HSUPA') mobile communication system, and the long term evolution (LTE, hereinafter referred to as'LTE') movement High rate packet data (HRPD, hereinafter referred to as'HRPD') of the communication system and the 3 ^rd generation project partnership 2 (3 ^rd generation project partnership 2: 3GPP2, hereinafter referred to as '3GPP2') It goes without saying that it can also be used in other cellular wireless communication systems, such as mobile communication systems and the International Institute of Electrical and Electronics Engineers (IEEE, hereinafter referred to as'IEEE') 802.16m mobile communication systems.

In the detailed description of the present invention, the source cell of the first and second embodiments is referred to as a first cell, and a new cell is referred to as a second cell.

In FIGS. 1 to 2, it is assumed that each cell (100, 120) and the eNB (110, 130) have the same PLMN ID, A, the ID of the first cell 100 is 1, and the ID of the first eNB 110 is 10. do. Accordingly, the CGI of the first cell 100 is 10.1 including the first eNB ID 10 and the cell ID 1, and the ECGI is A.10.1 including the first PLMN ID A of the BPLMN LIST and the CGI 10.1.

In the same way, assuming that the ID of the second cell 120 is 2 and the ID of the second eNB 110 is 20, the CGI of the second cell 120 is the second eNB 130 ID 20 and the cell ID 2 Is 20.2, and the ECGI is A.20.2 including the first PLMN ID A of the BPLMN LIST and the CGI 20.2.

In addition, the GEI of the first eNB 110 becomes A.10 including the PLMN ID A of the first eNB and the first eNB ID 10, and the GEI of the second eNB 130 is the PLMN ID A and the second eNB of the second eNB. It becomes A.20 with 2eNB ID 20.

1 is a diagram showing a relationship between ECGI and CGI and GEI according to a first embodiment of the present invention.

Referring to FIG. 1, the system of the present invention includes a first cell 100, a first eNB 110, a second cell 120, a second eNB 130, a Mobile Mobility Entitiy (MME) 140, and the first cell. It consists of a terminal (not shown) in the cell 110. When the user terminal corresponds to the first cell 100 operated by the first eNB 110, the UE newly discovers the second cell 120 and contains SI (SYSTEM INFORMATION; hereinafter referred to as SI) Acquire information. That is, the second cell 120 broadcasts its own cell information and broadcasts the currently operating BPLMN LIST (A,B) and a CGI including the second cell ID 20 and the second eNB ID 2, so that the BPLMN The terminal receiving the LIST transmits CGI = 20.2 and the first PLMN ID A to the first cell 100. Accordingly, the first eNB 110 infers that the ECGI of the second cell 120 = A.20.2, and recognizes the GEI of the second eNB 130 as A.20. Thereafter, the first eNB 110 requests X2 configuration using the PLMN ID A of the second eNB 130 included in the recognized GEI A.20.

2 is a diagram showing a flow chart of X2 setting according to the first embodiment of the present invention.

Referring to FIG. 2, in step 201, for different cells for which a neighbor relationship between base stations is not established, a terminal 250 connected to the first cell 100 checks the existence of the second cell 120.

In step 203, the second cell 120 broadcasts its own cell information including SI, and the terminal 250 receives a physical cell identifier (Physical CELL), which is a cell classification factor in the physical layer received through the cell information. ID or less (specified as PCI) is transmitted to the first cell 100.

In step 205, the first cell 100 confirms that the PCI for the second cell 120 does not exist in the database managed by the second cell 120, and the ECGI of the second cell 120 is additionally managed as a neighboring cell. The SI request for acquiring is transmitted to the terminal 250.

In step 207, the terminal 250 analyzes the cell information broadcasted by the second cell 120 to provide a CGI including a second eNB ID and a second cell ID, and a BPLMN LIST supported by the second cell 120. Receive.

In step 209, the terminal 250 transmits the CGI including the second eNB ID and the second cell ID and the ECGI including the PLMN ID supporting the second cell 120 to the first cell 100. .

In step 211, the first cell 100 transmits the GEI including the second eNB ID acquired in step 209 and the PLMN ID of the second eNB 130 to the Evolved Packet Core (EPC) 260 to obtain an X2 IP address. Try. The process of attempting to obtain the IP address uses a configuration transmission (S1AP ENB CONFIGURATION TRANSFER). In step 213, when the EPC 260 transmits related IP address acquisition information to the second eNB 130 using the received GEI, and in step 215, the second eNB 130 supports the first cell 100 It transmits its own X2 IP address to the EPC 260.

At this time, S1AP ENB CONFIGURATION TRANSFER and MME CONFIGURATION TRANSFER are used. In step 217, the first cell acquires the IP of the second eNB 130 operating the second cell through the EPC 260. In step 219, the first cell 100 requests X2 configuration using the acquired IP address for X2 of the second eNB 130, and completes the operation when responding to the request in step 221.

In the second embodiment, it is assumed that the PLMN ID of the second eNB 330 and the PLMN ID of the second cell 320 are different within the network, and that the cell information broadcast by the second cell broadcasts only its own PLMN ID. do.

Assume that the ID of the first cell 300 shown in FIGS. 3 to 4 is 1, the ID of the first eNB 310 is 10, and the PLMN ID of the first cell 300 and the first eNB 310 is A. . Therefore, the CGI is 10.1 including the first eNB 310 ID 10 and the first cell 300 ID 1, and the GEI is A.10 including the first eNB 310 ID 10 and the PLMN ID A of the first eNB 310. And ECGI is A.10.1 including the PLMN ID A of the first cell 300 and the CGI.

In the same manner, the ID of the second cell 320 is 2, the ID of the second eNB 330 is 20, the PLMN ID of the second cell 320 is B, and the PLMN ID of the second eNB 330 is A. I assume. Accordingly, the CGI is 20.2 including the 2nd eNB 330 ID 20 and the 2nd cell 320 ID 2, and the GEI is A. A. including the 2nd eNB 330 ID 20 and the PLMN ID A of the 2nd eNB 330. 20, and the ECGI is B.20.2 including the PLMN ID B of the second cell 320 and the CGI.

In addition, it is assumed that the ID of the 3eNB 340 is 20 and the GEI is B.20.

3 is a diagram showing a relationship between EUTRA CELL GLOBAL ID, CELL GLOBAL ID, and GLOBAL eNB ID according to the second embodiment of the present invention.

Referring to FIG. 3, the system includes a first cell 300, a first eNB 310, a second cell 320, a second eNB 330, a third eNB 340, an MME 350, and the first cell ( It consists of a terminal (not shown) in the 330.

For example, the process of setting X2 by the first cell 300 and the second cell 320 is as described below.

When the user terminal corresponds to the first cell 300 of the first eNB 310, the terminal newly discovers the second cell 320 and performs a system information (SI) request. After that, the terminal receiving the BPLMN ID LIST (B) currently broadcasting by the second cell 330 transmits CGI = 20.2 and PLMN ID B to the first eNB 310. In this case, the first eNB 310 infers that the ECGI of the second cell 320 = B.20.2, and thus the GEI of the second eNB 330 is also recognized as B.20. As a result, the first eNB 310 may make an X2 configuration request to the third eNB 340 other than the second eNB 340. The X2 configuration request includes a process for the first cell 310 to acquire an X2 Internet Protocol (IP) address of the second cell 330.

Therefore, the first cell 300 uses a mapping table as shown in Table 2. The mapping table represents a mapping relationship between a basic PLMN (Primary PLMN for Global eNB ID) and a shared PLMN (Shared PLMN ID for EUTRA CGI).

Primary PLMN for Global eNB ID Shared PLMN ID for EUTRA CGI
A B C

When using the mapping table, it is checked whether the PLMN ID of the ECGI is included in the mapping table between the basic PLMN and the shared PLMN, and the PLMN is mapped to correspond to the check result. That is, since the second cell 320 broadcasts only the currently operating BPLMN ID LIST (B), the first eNB 310 maps the PLMN ID B of the second cell 320 to A to the second eNB. The GEI of (330) is recognized as A.20. Thereafter, the first eNB 310 recognizes the second eNB 330 through the GEI and requests X2 configuration. That is, when the PLMN IDs of the neighboring eNBs and the cells corresponding to the neighboring eNBs do not match, the first eNB 310 maps the PLMN IDs of the neighboring eNBs and cells corresponding to the neighboring eNBs using a mapping table. The X2 configuration request is a process in which the source cell acquires the X2 Internet Protocol address of the new cell. The process of obtaining the X2 IP address is described in detail in the operation of FIG. 4 according to the second embodiment, and thus will be omitted below.

4 is a diagram showing an operation process according to a second embodiment of the present invention.

Referring to FIG. 4, in step 401, for different base stations for which a neighbor relationship between base stations is not established, a terminal connected to the first cell 300 checks the existence of the second cell 320. In step 403, the second cell 320 broadcasts information on its own cell, and the terminal 450 transmits the PCI received through the information to the first cell 300. That is, the terminal reports information on the new cell to the source cell so that the source cell obtains the identifier. The information on the cell includes a physical cell identifier and system information of the cell. Afterwards, in step 405, the first cell 300 confirms that the PCI for the second cell 320 does not exist in the database managed by the second cell 320, A request for information on a cell for obtaining ECGI is transmitted to the terminal 250. In step 407, the terminal 250 analyzes the cell 320 information broadcasted by the second cell 320 to receive a CGI and a BPLMN ID LIST supporting the second cell 320, and in step 409 An ECGI including a CGI and a PLMN ID B supporting the second cell 320 is transmitted to the first cell 300. In step 411, the first cell 300 checks whether the PLMN ID B of the received ECGI is in the mapping table. The mapping table represents a mapping relationship between a basic PLMN ID and PLMN IDs of shared cells in a corresponding eNB.

When the PLMN ID of the ECGI received by the first cell 300 in step 413-1 is included in the PLMN LIST of shared cells included in the mapping table, the first cell 300 maps the corresponding PLMN ID. GEI is obtained by mapping to the basic PLMN ID of the table (step 413-1). That is, the source cell acquires the GEI of the new cell by changing the PLMN ID of the ECGI to the basic PLMN ID of the mapping table.

However, if the received PLMN ID of the ECGI is not included in the PLMN LIST of shared cells included in the mapping table, it is checked in step 413-2 whether it exists in the default PLMN ID of the mapping table, and the default PLMN ID of the mapping table If is present, GEI is obtained by mapping to the basic PLMN ID. That is, the source cell checks whether the PLMN ID of the ECGI is included in the basic PLMN list of the mapping table, and when the PLMN ID of the ECGI is included in the basic PLMN list of the mapping table, the ECGI The GEI of the new cell is acquired by using the PLMN ID.

In step 413-3, if the PLMN ID of the received ECGI is not mapped to any item in the mapping table, the corresponding ECGI is ignored and the ANR function is terminated. That is, if the PLMN ID of the ECGI is not included in the mapping table, the source cell discards the information on the new cell to terminate the ANR function.

In step 415, the first eNB attempts to obtain an X2 IP address through the EPC using the GEI included in the ECGI obtained in step 413-1 or 413-2. In step 415, S1AP ENB CONFIGURATION TRANSFER is used. In step 417, the EPC transmits the IP address acquisition information of the first cell 320 to the second eNB 330 using the received GEI, and in step 419, the second eNB 330 transmits the IP address acquisition information of the first cell. If supported, the IP address for X2 of the second eNB 330 is transmitted to the EPC. In step 421, the EPC transmits the IP address for X2 of the second eNB 330 that manages the second cell 320 to the first eNB 310, and in step 423, the first eNB 310 is acquired. After requesting for X2 configuration using the IP address for X2 of the second eNB 330, if the request is answered in step 425, the operation is completed.

That is, the EPC provides the source cell with the X2 IP address of the new cell as the source cell according to whether the PLMN ID of the EUTRA ECGI of the new cell different from the source cell is included in the mapping table between the basic PLMN and the shared PLMN. .

Meanwhile, although not shown in a separate drawing, the source cell may include a receiving unit, a transmitting unit, a control unit, and a storage unit, and the control unit controls the overall operation of the source cell, and the receiving The unit receives various messages, etc. from the UE, new cell and EPC, and the like, the transmitting unit transmits various messages, etc. to the UE, new cell, EPC, etc., and the storage unit transmits various messages received by the receiving unit. Messages, etc., and various programs necessary for the operation of the source cell are stored. In addition, the source cell may be implemented by separately implementing the receiving unit, the transmitting unit, the control unit, and the storage unit, and the receiving unit, the transmitting unit, the control unit, and the storage unit are integrated into one. Of course, it may be implemented as an integrated unit.

Further, although not shown in a separate drawing, the new cell may include a receiving unit, a transmitting unit, a control unit, and a storage unit, and the control unit controls the overall operation of the new cell, and the receiving unit The unit receives various messages, etc. from the UE, source cell, EPC, etc., the transmitting unit transmits various messages, etc. to the UE, source cell, EPC, etc., and the storage unit transmits various messages received by the receiving unit. Messages, etc., and various programs necessary for the operation of the new cell are stored. In addition, the new cell may be implemented by separately implementing the receiving unit, the transmitting unit, the control unit, and the storage unit, and the receiving unit, the transmitting unit, the control unit, and the storage unit are integrated into one. Of course, it may be implemented as an integrated unit.

In addition, although not shown in a separate drawing, the EPC may include a receiving unit, a transmitting unit, a control unit, and a storage unit, and the control unit controls the overall operation of the EPC, and the receiving unit is Receives various messages, etc. from a source cell and a new cell, and the transmitting unit transmits various messages, etc. to the source cell and a new cell, and the storage unit includes various messages received by the receiving unit and the EPC. It stores various programs necessary for operation. In addition, the EPC may be implemented by separately implementing the receiving unit, the transmitting unit, the control unit, and the storage unit, and the receiving unit, the transmitting unit, the control unit, and the storage unit are integrated into one. Of course, it can also be implemented as an integrated unit.

In addition, although not shown in a separate drawing, the UE may include a receiving unit, a transmitting unit, a control unit, and a storage unit, and the control unit controls the overall operation of the UE, and the receiving unit is Receives various messages, etc. from a source cell and a new cell, and the transmitting unit transmits various messages to the source cell and a new cell, and the storage unit includes various messages received by the receiving unit, etc., and the UE It stores various programs necessary for operation. In addition, the UE may be implemented by separately implementing the receiving unit, the transmitting unit, the control unit, and the storage unit, and the receiving unit, the transmitting unit, the control unit, and the storage unit are integrated into one Of course, it can also be implemented as an integrated unit.

Meanwhile, although specific embodiments have been described in the detailed description of the present invention, various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined by the scope of the claims to be described later as well as the scope and equivalents of the claims.

250: terminal, 260: EPC, 300: first cell, 310: first eNB, 320: second cell, 330: second eNB

Claims (14)

In a method for obtaining an ID (Identifier) of a new cell by a device in a wireless communication system,
Receiving information related to the new cell from a user equipment (UE);
Obtaining an Evolved Universal Terrestrial Radio Access (ECGI) Cell Global ID (ECGI) of the new cell if it is determined that the new cell is not set as a neighbor cell based on the information related to the new cell;
Determining whether the ECGI's Public Land Mobile Network (PLMN) ID is included in a mapping table between a basic PLMN ID and a shared PLMN ID; And
And obtaining the ID of the new cell when the PLMN ID of the ECGI is included in the mapping table.
The method of claim 1,
If the PLMN ID of the ECGI is not included in the mapping table, the method further comprising the step of discarding the information related to the new cell.
The method of claim 1,
The process of obtaining the ID of the new cell,
When the PLMN ID of the ECGI is included in the shared PLMN ID included in the mapping table, the global eNB of the new cell is included in the mapping table and using a PLMN ID corresponding to the PLMN ID of the ECGI A method comprising the process of obtaining an ID (Global enhanced Node B ID).
The method of claim 1, wherein the process of obtaining the ID of the new cell comprises:
If the PLMN ID of the ECGI is not included in the shared PLMN ID included in the mapping table, determining whether the PLMN ID of the ECGI is included in the basic PLMN ID included in the mapping table; And
When it is determined that the PLMN ID of the ECGI is included in the basic PLMN ID included in the mapping table, the global eNB ID (Global enhanced Node B ID) of the new cell is obtained using the PLMN ID of the ECGI A method involving the process of doing.
The method of claim 1,
The information related to the new cell includes a physical cell identifier (PCI) of the new cell and system information (SI) of the new cell.
The method of claim 1,
The ID of the new cell is,
The method that is the X2 Internet Protocol (IP) address of the new cell.
The method of claim 1,
When information related to the new cell received from the user terminal has been previously stored in the device, the new cell is determined to be the adjacent cell.
In an apparatus in a wireless communication system for obtaining an ID (Identifier) of a new cell,
A receiver for receiving information related to the new cell from a user equipment (UE); And
It includes a controller, the controller,
If it is determined that the new cell is not set as an adjacent cell based on the information related to the new cell, ECGI (Evolved Universal Terrestrial Radio Access (EUTRA) Cell Global ID) of the new cell is obtained,
Determine whether the ECGI's Public Land Mobile Network (PLMN) ID is included in a mapping table between the basic PLMN ID and the shared PLMN ID,
The device configured to obtain the ID of the new cell when the PLMN ID of the ECGI is included in the mapping table.
The method of claim 8, wherein the controller,
When the PLMN ID of the ECGI is not included in the mapping table, the device configured to discard information related to the new cell.
The method of claim 8,
When the PLMN ID of the ECGI is included in the shared PLMN ID included in the mapping table, the controller uses the PLMN ID included in the mapping table and corresponding to the PLMN ID of the ECGI, and the new A device configured to obtain a cell's global enhanced Node B ID (eNB ID).
The method of claim 8, wherein the controller,
If the PLMN ID of the ECGI is not included in the shared PLMN ID included in the mapping table, it is determined whether the PLMN ID of the ECGI is included in the basic PLMN ID included in the mapping table,
When it is determined that the PLMN ID of the ECGI is included in the basic PLMN ID included in the mapping table, the global eNB ID (Global enhanced Node B ID) of the new cell is obtained using the PLMN ID of the ECGI Device configured to do so.
The method of claim 8,
The information related to the new cell includes a physical cell identifier (PCI) of the new cell and system information (SI) of the new cell.
The method of claim 8,
The ID of the new cell is,
The device that is the X2 Internet Protocol (IP) address of the new cell.
The method of claim 8,
When the information related to the new cell received from the user terminal has been previously stored in the device, the controller determines the new cell as the adjacent cell.

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