KR20130091289A - Wireless communication system comprising femto gateway apparatus and handover method in the same - Google Patents

Abstract

PURPOSE: A wireless communication system including a Femto gateway apparatus and a handover method in the system are provided to provide information of a Femto base station, which is grouped to a sector where a terminal moves, to the terminal, in order to manage the Femto base station per sector and to perform cell search. CONSTITUTION: A sector management unit (340) divides a macro cell region into a plurality of sectors. The sector management unit groups Femto base stations included in each divided sector and then manages the Femto base stations. A control unit (350) delivers a list of neighboring base stations to the terminal. The neighboring base stations are grouped to a sector determined according to whether the movement of the terminal is movement in the sector or movement between sectors, when there is a request for the neighboring base station list from the Femto base station, so that the handover of the terminal is performed by cell search by the neighboring base station list. [Reference numerals] (310) Lower communication unit; (320) Upper communication unit; (330) Storage unit; (340) Sector management unit; (350) Control unit; (AA) Femto base station; (BB) Core network

Description

Wireless communication system comprising femto gateway device and handover method in the system {Wireless communication system comprising femto gateway apparatus and handover method in the same}

The present invention relates to a wireless communication system including a femto gateway device and a handover method in the system.

With the development of mobile communication and diversification of users' usage patterns, users want to receive services using wireless anytime and anywhere. For example, there is a need for a small base station research that solves the indoor shading problem and uses a limited frequency resource effectively to provide a better wireless environment for many users because the shading problem is difficult in indoors such as homes or offices. It is getting bigger.

Femtocell is a next generation wireless communication technology that addresses this need by reducing the cell radius to a suitable size indoors. Such femtocells improve the indoor call quality that the coverage of the macro cell falls short of, or serve to share the macro cell load in an overload area.

However, there is a common problem that occurs when a plurality of femtocells are densely arranged in a macro cell. When a plurality of femtocells are disposed, performance may be deteriorated due to mutual influence.

For example, in a femtocell, a temporary load is generated while exchanging information of numerous femtocells with a base station for cell management.

A mobile station moving from a serving cell, which is an existing base station, to a target cell, which is a new base station, collects information of adjacent femtocells and hands over to the best femtocell. In this case, the process of collecting information of neighboring femtocells in the cell management step before performing the handover procedure is called scanning. In order to perform scanning on all of these femtocells, the mobile terminal has a long scanning time. During this time, the base station stores the information going to the mobile terminal. When the femtocell is present, the amount of data to be stored by the base station also increases, making it difficult to guarantee QoS. Also, since the base station of the femtocell provides a list of all femtocells to the mobile terminal, the size of information transmitted between the mobile stations and There is a problem that the overhead is also very large.

The technical problem to be achieved by the present invention is to divide the macro cell area into a plurality of sector areas to manage the femto base station for each sector and to provide cell information by the femto base station grouped in the sector to which the terminal is moved to the cell search The present invention provides a wireless communication system including a femto gateway device in which time is reduced and information transmission is reduced thereby improving system performance, and a handover method in the system.

Femto gateway device according to an aspect of the present invention,

A sector management unit for dividing the macro cell area into a plurality of sectors, and grouping and managing femto base stations included in each divided sector for each sector; And when the neighbor base station list request is received from the femto base station, the neighbor base station list grouped in a sector determined according to whether the movement of the terminal is a movement within a sector or an inter-sector movement to the terminal and transmits the cell by the neighbor base station list. And a controller for performing handover of the terminal by searching.

Here, when it is determined that the movement of the terminal is movement in a sector, the controller transmits a neighbor base station list of a sector to which the femto base station to which the terminal is currently connected belongs to the terminal.

In addition, when it is determined that the movement of the terminal is an inter-sector movement, the controller transmits a neighbor base station list of a sector to which the terminal moves to the terminal.

Femto gateway device according to another aspect of the present invention,

A sector management unit for dividing the macro cell area into a plurality of sectors, and grouping and managing femto base stations included in each divided sector for each sector; And when a neighbor base station list request is received from a femto base station, when the movement of the terminal is intersector movement, the neighbor base station group grouped in the moved sector is delivered to the terminal, and the terminal is handed over by the cell search by the neighbor base station list. It includes a control unit to be performed.

Here, when it is determined that the movement of the terminal is a movement in a sector, the controller transmits an instruction to perform the cell search using the neighbor base station list stored in the terminal to the terminal.

In addition, a tracking area code (TAC) may be assigned to each of the plurality of sectors to manage the plurality of sectors.

A wireless communication system according to another aspect of the present invention includes:

A femto gateway device for dividing a macro cell region into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector; And a cell search request from the terminal, wherein the cell search request includes a movement path of the terminal, and transmits the movement path of the terminal to the femto gateway device, and includes a neighbor base station list transmitted from the femto gateway device. And a femto base station for performing a cell search by the neighbor base station list by transmitting a cell search response to the terminal, wherein the femto gateway device is a femto base station to which the terminal should handover based on a movement path of the terminal. The UE may determine a sector to which the UE belongs, and perform a cell search by the UE by performing a cell search based on a neighbor base station list grouped in the determined sector.

Here, the femto gateway device determines a sector according to whether the movement of the terminal is a movement within a sector or an inter-sector movement based on the movement path of the terminal.

In addition, the femto gateway device, if it is determined that the movement of the terminal is a movement within a sector, transmits an instruction to perform the cell search using the neighbor base station list stored in the terminal to the terminal. do.

The femto gateway apparatus may further include: a sector manager configured to divide the macro cell region into a plurality of sectors, and manage a femto base station included in each divided sector by grouping the sectors; And when the neighbor base station list request is received from the femto base station, the neighbor base station list grouped in a sector determined according to whether the movement of the terminal is a movement within a sector or an inter-sector movement to the terminal and transmits the cell by the neighbor base station list. And a controller for performing handover of the terminal by searching.

The femto gateway apparatus may further include: a sector manager configured to divide a macro cell area into a plurality of sectors, and manage a femto base station included in each divided sector by grouping the sectors; And when a neighbor base station list request is received from a femto base station, when the movement of the terminal is intersector movement, the neighbor base station group grouped in the moved sector is delivered to the terminal, and the terminal is handed over by the cell search by the neighbor base station list. It includes a control unit to be performed.

Handover method according to another aspect of the present invention,

Managing, by a femto gateway device, a macro cell region divided into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector; Determining a sector to which the terminal moves based on the movement path transmitted from the terminal; Delivering a neighbor base station list grouped to the determined sector to the terminal; Determining, by the terminal, a target femtocell base station to be handed over by performing a cell search based on the neighbor base station list; And performing a handover to the terminal by the femtocell base station apparatus to which the terminal is connected in cooperation with the target femtocell base station apparatus.

The determining of the sector may include: requesting, by the terminal, a cell search to the femto base station apparatus, wherein the cell search includes a movement path of the terminal; Requesting, by the femto base station apparatus, a neighbor base station list by transferring the movement path of the terminal to the femto gateway apparatus; Determining, by the femto gateway device, whether the movement of the terminal is a movement in a sector based on the movement path of the terminal; Determining a sector including the femto base station apparatus to which the terminal is connected when it is determined that the movement of the terminal is movement in a sector; And determining a sector in which the terminal moves if it is determined that the movement of the terminal is not a movement in the sector.

Handover method according to another aspect of the present invention,

Managing, by a femto gateway device, a macro cell region divided into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector; Determining whether the movement of the terminal is a movement in a sector based on the movement path transmitted from the terminal; Instructing the terminal to perform a cell search using a neighbor base station list stored in the terminal when it is determined that the movement of the terminal is movement in a sector; If it is determined that the movement of the terminal is not a movement in a sector, transferring the neighbor base station list grouped to the moving sector to the terminal; Determining, by the terminal, a target femtocell base station to be handed over by performing a cell search based on a neighbor base station list; And performing a handover to the terminal by the femtocell base station apparatus to which the terminal is connected in cooperation with the target femtocell base station apparatus.

The determining of whether the movement of the terminal is movement within a sector may include: requesting, by the terminal, a cell search to the femto base station apparatus, wherein the cell search includes a movement path of the terminal; Requesting, by the femto base station apparatus, a neighbor base station list by transferring the movement path of the terminal to the femto gateway apparatus; And determining, by the femto gateway device, whether the movement of the terminal is a movement in a sector based on the movement path of the terminal.

In addition, the step of instructing the terminal, characterized in that for transmitting the information instructing the femto gateway device to perform the cell search using the neighbor base station list stored in the terminal to the terminal through the femto base station apparatus; do.

According to the present invention, the cell search time for handover of the terminal is reduced.

In addition, the amount of information transfer for handover is also reduced.

This improves system performance.

1 is a diagram schematically illustrating a wireless communication system according to an embodiment of the present invention.
2 is a diagram illustrating a concept of managing a femto base station by dividing a macro cell into a plurality of sectors in a wireless communication system according to an embodiment of the present invention.
FIG. 3 is a diagram illustrating a detailed configuration of the femto gateway shown in FIG. 1.
FIG. 4 is a diagram illustrating a detailed configuration of the femto base station shown in FIG. 1.
5 is a flowchart of a handover method according to an embodiment of the present invention.
6 is a diagram illustrating a concept of determining a movement path of a terminal according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise. Also, the terms " part, "" module," and " module ", etc. in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software have.

1 is a diagram schematically illustrating a wireless communication system according to an embodiment of the present invention.

Referring to FIG. 1, a wireless communication system according to an embodiment of the present invention includes a macro base station 100, a plurality of Home Envolved NodeBs (HeNBs) 210, 220, and 230, and a femto gateway ( HeNB Gateway) 300.

The macro base station 100 manages a macro cell 10 and is a base station that provides a service to a terminal 400 in a macro cell. The macro cell 10 includes a plurality of femto cells 21, 22, and 23 managed by the plurality of femto base stations 210, 220, and 230, respectively. Macro cell 10 refers to a cell of a larger area than femto cells 21, 22, 23 and is not limited to the dictionary definition of the term macro.

The femto base station 210, 220, 230 refers to a very small base station that provides a wireless communication service for a narrow range (for example, 30 m range), and manages the femto cell 21, 22, 23. For example, it is installed in a shaded area where radio waves of other cells are degraded, such as inside a home or building, to secure the quality of mobile communication service. Here, femto base stations 210, 220, 230 and femto cells 21, 22, 23 are not limited to the dictionary definition of femto (femto) of the small base station and the small cell having a name of a larger unit or smaller unit It is a term including the range.

The femto gateway 300 is a network element for supporting a plurality of femto base stations 210, 220, 230 and performs a control plane function such as mobility management of a user. The femto gateway 300 performs signal transmission between the core network (not shown) and the femto base stations 210, 220, and 230.

Meanwhile, since the coverage of the femto cells 21, 22, and 23 is very small, many femto cells may exist in one macro cell 10.

Accordingly, in the embodiment of the present invention, as shown in the accompanying FIG. 2, the macro cell 10 is divided into a plurality of sectors 11, 12, 13, 14, 15, and 16 having a predetermined area. A list of femto base stations included in the sectors 11, 12, 13, 14, 15, and 16, respectively, is managed for each sector (11, 12, 13, 14, 15, 16).

In the embodiment of the present invention, in order to distinguish the femto base stations included in the sectors 11, 12, 13, 14, 15, and 16, the femto gateway 300 receives a unique ID value from the core network and receives the same ID value. In order to manage the femto base stations 210, 220, 230 managed by the femto gateway 300 having a tracking area code (TAC) for each femto base station 210, 220, 230, each sector ( 11, 12, 13, 14, 15, 16) to manage the femto base station. That is, the list of femto base stations 210, 220, 230 grouped by sectors 11, 12, 13, 14, 15, and 16 has a list of tracking area codes indicating each femto base station 210, 220, 230. do.

3 is a diagram illustrating a detailed configuration of the femto gateway 300 shown in FIG. 1.

As shown in FIG. 3, the femto gateway 300 includes a lower communicator 310, an upper communicator 320, a storage 330, a sector manager 340, and a controller 350. Here, for the convenience of description, since the general configuration of the femto gateway 300 which is not related to the features of the present invention is well known, a description thereof will be omitted.

The lower communication unit 310 is a communication interface and communicates with the femto base station 210, 220, 230 located in the macro cell 10 by wire or wirelessly.

The upper communication unit 320 is a communication interface and performs communication with the core network by wire or wirelessly.

The storage unit 330 stores various kinds of information for the femto base station 210, 220, 230 to provide wireless communication to the terminal 400 in association with the core network. In particular, in the embodiment of the present invention, as shown in FIG. 2, the storage unit 330 stores a list of femto base stations 210, 220, and 230 grouped by sector.

As shown in FIG. 2, the sector manager 340 divides an area of the macro cell 10 into a plurality of sectors 11, 12, 13, 14, 15, and 16, and is located in the macro cell 10. The storage unit 330 may determine the sectors 11, 12, 13, 14, 15, and 16 to which the femto base stations 210, 220, 230 belong, and perform grouping on the femto base stations 210, 220, 230 for each sector. Store in In this case, the sector manager 340 assigns a unique TAC to each femto base station 210, 220, 230 to perform management.

The control unit 350 communicates with the femto base station 210, 220, 230 through the communication unit 310, performs communication with the core network through the communication unit 320, and the femto base station in the macro cell 10 ( Relevant information about 210, 220, and 230 is stored in the storage 330.

In addition, the controller 350 transmits the movement path information to the sector manager 340 when the location information of the terminal 400, in particular, the movement path information of the terminal 400 is transmitted from the femto base station 210, 220, 230. In addition, the list of femto base stations 210, 220, 230 grouped in the sector determined by the sector manager 340 is transmitted to the femto base station 210, 220, 230 through the communication unit 310 as a neighbor base station list.

Meanwhile, the sector manager 340 determines a sector in which the terminal 400 is located according to the movement path information of the terminal 400 transmitted from the controller 350 and transmits the sector to the base station manager 350.

4 is a diagram illustrating a detailed configuration of the femto base station 210 shown in FIG. Here, since the femto base station 210, 220, 230 is the same configuration, it will be described using one femto base station 210 as an example. In addition, since the general configuration of the femto base station 210 which is not related to the features of the present invention for convenience of description is well known, a description thereof will be omitted.

As shown in FIG. 4, the femto base station 210 includes an upper communication unit 211, a lower communication unit 213, a storage unit 215, a cell search management unit 217, and a handover control unit 219.

The upper communication unit 211 is a communication interface and performs communication with the femto gateway 300 by wire or wirelessly.

The lower communication unit 213 communicates with the terminal 400 wirelessly as a communication interface.

The storage unit 215 stores a list of neighbor base stations delivered from the femto gateway 300.

When there is a cell search request transmitted from the terminal 400 through the lower communication unit 213, the cell search managing unit 217 may include location information of the terminal 400 included in the cell search request, in particular, movement path information of the terminal 400. Extract and transfer the list to the femto gateway 300 through the upper communication unit 211, receive the neighbor base station list transmitted from the femto gateway 300, and store the list in the storage unit 215 and at the same time through the lower communication unit 212. 400).

In addition, when the cell search result information is transmitted from the terminal 400, the cell search manager 217 determines a target femto base station to which the terminal 400 hands over based on the cell search result information.

The handover control unit 219 performs a handover to the terminal 400 to the target femto base station determined by the cell search management unit 217.

Hereinafter, a handover method according to an embodiment of the present invention will be described.

5 is a flowchart of a handover method according to an embodiment of the present invention. Here, for convenience of description, it will be described on the assumption that the handover is performed from the area of the femto base station 220 to the area of the femto base station 220 due to the movement of the terminal 400.

Referring to FIG. 5, the femtocell gateway 300 first divides the macro cell 10 into a plurality of sectors 11, 12, 13, 14, 15, and 16 in a predetermined area, as shown in FIG. 2. All femto base stations 210, 220, 230 in the macro cell 10 are grouped by sectors 11, 12, 13, 14, 15, and 16 to store and manage grouped femto base station list information (S100).

Thereafter, when it is determined that handover is necessary due to the movement of the terminal 400 within the femto base station 210 region (S110), the terminal 400 requests a cell search request including its own movement path information. Transfer to 210 (S120). Here, the movement path information of the terminal 400 may be determined through various methods, which are well known. For example, as shown in FIG. 6, the femto cell currently connected to the angle θ according to the direction in which the terminal 400 receives radio waves from the femto base station 210 and the moving direction of the terminal 400. The movement path information of the terminal 400 may be determined based on the location information of 21.

Thereafter, the femto base station 210 extracts the movement path information of the terminal 400 included in the cell search request from the terminal 400 and delivers it to the femto gateway 300 and requests a neighbor base station list (S130). .

Subsequently, the femto gateway 300 determines whether the movement of the terminal 400 is a movement within a sector by the movement path of the terminal 400 according to a neighbor base station list request from the femto base station 210 ( S140). For example, when femto cells 21 and 22 are both included in the sector 11, and the terminal 400 moves from the femto cell 21 to the femto cell 22 is the movement in the sector 11. Judging by However, if femto cell 21 is included in sector 11 and femto cell 22 is included in sector 12, movement from femto cell 21 to femto cell 22 will result in sector 11. It is determined not to be a movement in the movement, but a movement out of the sector 11, that is, a movement between the sectors 11 and 12.

Therefore, when the movement of the terminal 400 is a movement in the sector 1, the femto gateway 300 determines a sector currently connected, that is, the sector 11 as a moving sector (S150).

However, when it is determined that the movement of the terminal 400 is the movement between the sectors 11 and 12, the femto gateway 300 determines the moving sector 12 as the moving sector instead of the currently connected sector 11. (S160).

Accordingly, the femto gateway 300 extracts the neighbor base station list corresponding to the determined sector 11 or 12 (S170) and delivers the list to the femto base station 210 (S180).

Next, the femto base station 210 includes the neighbor base station list delivered from the femto gateway 300 in the cell search response and transmits it to the terminal 400 (S190).

Accordingly, the terminal 400 performs cell search only for femto base stations of the sector 11 or 12 included in the neighbor base station list transmitted from the femto base station 210 (S200), and performs the femto result of the cell search. Transfer to the base station 210 (S210).

Thereafter, the femto base station 210 determines the target femto base station optimal for handover by the terminal 400 according to the cell search result transmitted from the terminal 400, and in the embodiment of the present invention, after determining the femto base station 220. (S220), the femto base station 220 is connected to perform a handover to the femto base station 220 for the terminal 400 (S230). Here, since the femto base station 210 serving as the base station 210 is well known for the handover operation of the terminal 400 to the femto base station 220 as the target base station, a detailed description thereof will be omitted.

As described above, according to the exemplary embodiment of the present invention, the macro cell 10 is divided into a plurality of sectors 11, 12, 13, 14, 15, and 16, and the list of the femto base stations 210, 220, 230 is divided according to the divided sectors. Since the cell search is performed only by the neighbor base station list corresponding to the sector during handover by the terminal 400, the time required for the cell search is reduced, and the data stored temporarily by the femto base station 210 during the cell search. The reduction also results in improved system performance.

Meanwhile, in the above, the neighbor base station list corresponding to the sector 11 or 12 to be moved is moved to the femto base station 210 regardless of whether the movement of the terminal 400 is a movement in the sector 11 or a movement between the sectors 11 and 12. Although only described as transmitting, the technical scope of the present invention is not limited thereto and may be implemented in various ways. For example, if the terminal 400 is powered on and is connected to the femto base station 210 in the sector 11 or is located in the sector 11 by handover, the neighbor already grouped into the sector 11. The base station list is stored in the terminal 400. Accordingly, when the femto gateway 300 determines that the movement of the terminal 400 is a movement in the sector 11, the femto gateway 300 does not need to provide the terminal 400 with the neighbor base station list grouped into the sector 11. . That is, in this case, the steps S150 and S170 do not need to be performed, and when the femto gateway 300 transmits the neighbor base station list to the terminal 400 through the femto base station 210 in step S180, The cell search (S200) can be performed by the neighbor base station list in which the terminal 400 is already stored, by transmitting only simple information indicating that the neighbor base station list is stored in the terminal 400 without transmitting the neighbor base station list. have. In this configuration, when the terminal 400 is moved within the sector 11, since the information transmitted from the femto gateway 300 to the terminal 400 is very small, the performance of the system may be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (16)

A sector management unit for dividing the macro cell area into a plurality of sectors, and grouping and managing femto base stations included in each divided sector for each sector; And
When there is a request for a neighbor base station list from a femto base station, the neighbor base station list grouped in a sector determined according to whether the movement of the terminal is within a sector or between sectors is transmitted to the terminal to search for a cell by the neighbor base station list. Control unit to perform the handover of the terminal by
Femto gateway device comprising a. The method of claim 1,
And when the movement of the terminal is determined to be movement in a sector, the controller transmits a neighbor base station list of a sector to which the femto base station to which the terminal is currently connected is transmitted to the terminal. The method of claim 1,
And if the controller determines that the movement of the terminal is an intersector movement, the controller transmits a neighbor base station list of a sector to which the terminal moves to the terminal. A sector management unit for dividing the macro cell area into a plurality of sectors, and grouping and managing femto base stations included in each divided sector for each sector; And
When there is a request for a neighbor base station list from a femto base station, when the movement of the terminal is inter-sector movement, the neighbor base station group grouped in the moved sector is transmitted to the terminal and handover of the terminal is performed by cell search by the neighbor base station list. Control to be performed
Femto gateway device comprising a. 5. The method of claim 4,
If it is determined that the movement of the terminal is a movement in a sector, the control unit transmits an instruction to perform the cell search using the neighbor base station list stored in the terminal to the terminal. . The method according to any one of claims 1 to 5,
And a tracking area code (TAC) for each of the plurality of sectors. A femto gateway device for dividing a macro cell region into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector; And
A cell search request from a terminal, wherein the cell search request includes a movement path of the terminal, and forwards the movement path of the terminal to the femto gateway device, and includes a neighbor base station list transmitted from the femto gateway device; Transmitting a cell search response to the terminal to perform a cell search by the neighbor base station list;
The femto gateway device determines a sector to which the femto base station to which the terminal should handover based on the movement path of the terminal, and performs the cell search by the terminal by performing a cell search based on a neighbor base station list grouped in the determined sector. To do
And the wireless communication system. The method of claim 7, wherein
The femto gateway device determines a sector according to whether the movement of the terminal is within a sector or between sectors based on a movement path of the terminal. The method of claim 7, wherein
The femto gateway device, if it is determined that the movement of the terminal is a movement in a sector, transmits an instruction to perform the cell search using the neighbor base station list stored in the terminal to the terminal. Communication system. The method of claim 7, wherein
The femto gateway device,
A sector manager configured to divide the macro cell area into a plurality of sectors, and group and manage femto base stations included in each divided sector by sector; And
When there is a request for a neighbor base station list from a femto base station, the neighbor base station list grouped in a sector determined according to whether the movement of the terminal is within a sector or between sectors is transmitted to the terminal to search for a cell by the neighbor base station list. Control unit to perform the handover of the terminal by
≪ / RTI > The method of claim 7, wherein
The femto gateway device,
A sector management unit for dividing the macro cell area into a plurality of sectors, and grouping and managing femto base stations included in each divided sector for each sector; And
When there is a request for a neighbor base station list from a femto base station, when the movement of the terminal is inter-sector movement, the neighbor base station group grouped in the moved sector is transmitted to the terminal and handover of the terminal is performed by cell search by the neighbor base station list. Control to be performed
≪ / RTI > Managing, by a femto gateway device, a macro cell region divided into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector;
Determining a sector to which the terminal moves based on the movement path transmitted from the terminal;
Delivering a neighbor base station list grouped to the determined sector to the terminal;
Determining, by the terminal, a target femtocell base station to be handed over by performing a cell search based on the neighbor base station list; And
Performing a handover to the terminal by the femtocell base station apparatus to which the terminal is connected in cooperation with the target femtocell base station apparatus;
/ RTI > The method of claim 12,
Determining the sector,
Requesting, by the terminal, a cell search to the femto base station apparatus, wherein the cell search includes a movement path of the terminal;
The femto base station transmits a movement path of the terminal to the femto gateway apparatus to request a list of neighboring base stations;
Determining, by the femto gateway device, whether the movement of the terminal is a movement in a sector based on the movement path of the terminal;
Determining a sector including the femto base station apparatus to which the terminal is connected when it is determined that the movement of the terminal is movement in a sector; And
Determining a sector in which the terminal moves if it is determined that the movement of the terminal is not a movement in a sector.
/ RTI > Managing, by a femto gateway device, a macro cell region divided into a plurality of sectors, and grouping femto base stations included in each divided sector by sector to manage a neighbor base station list for each sector;
Determining whether the movement of the terminal is a movement in a sector based on the movement path transmitted from the terminal;
Instructing the terminal to perform a cell search using a neighbor base station list stored in the terminal when it is determined that the movement of the terminal is movement in a sector;
If it is determined that the movement of the terminal is not a movement in a sector, transferring the neighbor base station list grouped to the moving sector to the terminal;
Determining, by the terminal, a target femtocell base station to be handed over by performing a cell search based on a neighbor base station list; And
Performing a handover to the terminal by the femtocell base station apparatus to which the terminal is connected in cooperation with the target femtocell base station apparatus;
/ RTI > 15. The method of claim 14,
Determining whether the movement of the terminal is a movement in a sector,
Requesting, by the terminal, a cell search to the femto base station apparatus, wherein the cell search includes a movement path of the terminal;
The femto base station transmits a movement path of the terminal to the femto gateway apparatus to request a list of neighboring base stations; And
Determining, by the femto gateway device, whether the movement of the terminal is a movement in a sector based on the movement path of the terminal;
/ RTI > 15. The method of claim 14,
Instructing the terminal,
And transmitting the information instructing the femto gateway device to perform a cell search using the neighbor base station list stored in the terminal to the terminal through the femto base station apparatus.

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