KR20100038764A - Method and apparatus for operating multi sector - Google Patents

Abstract

PURPOSE: A multi sector operation method and an apparatus thereof capable of efficiently managing the operation of multi sectors by simplifying a management node are provided to efficiently use an IP address by operating multiple sectors by using one shared IP address. CONSTITUTION: If a downlink data packet is received from a control station(210), an address translation module(230) converts a destination IP address of the downstream data packet inside the IP of the sector in which the downstream data packet is transmitted. If the upstream data packet is received from the angular sector, the address conversion module converts the source IP address of upstream data packets into the public IP address of the base station.

Description

Method and Apparatus for Multisector Operation {Method and Apparatus for Operating Multi Sector}

TECHNICAL FIELD The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for operating a multisector.

The base station (BS) that forms a cell-based mobile communication system uses a multi-frequency allocation (Multi-FA) scheme to provide communication services to more users by increasing system capacity or using frequencies efficiently. Frequency Assignment) and / or Multi-Sector.

A general configuration of a base station supporting multiple sectors among these base station configurations is shown in FIG. 1. The base station 100 illustrated in FIG. 1 is connected to the control station 110 through an R6 interface to transmit and receive data packets and control packets with the control station 110. In this case, each of the sectors 120a to 120n is connected to the control station 110 through each R6 interface to receive the downlink data packet from the control station 110 and transmit the downlink data packet to the terminal 160 through the R1 interface. In this case, each of the sectors 120a to 120n receives an uplink data packet from the terminal 160 through the R1 interface and transmits the uplink data packet to the control station 110 through the respective R6 interface.

As such, the base station illustrated in FIG. 1 simply combines each sector to operate multiple sectors, and may be easy to implement. However, since each sector is connected to the control station through each R6 interface, the management node is connected to the sector. There is a problem that the number is existed, and the management is cumbersome, and since each sector operates independently with its own IP address, a separate IP address must be allocated for each sector. There is a problem that can be.

Disclosure of Invention The present invention has been made in view of the above-described problems, and it is an object of the present invention to provide a multisector operating method and apparatus capable of efficiently using an IP address by operating a multisector using a single public IP address.

Another object of the present invention is to provide a multi-sector operating method and apparatus capable of efficiently managing multi-sector operations by unifying management nodes.

According to an aspect of the present invention, there is provided a method of operating a multisector according to an aspect of the present invention, comprising: receiving a downlink packet having a destination IP address set to a public IP address of a base station from a control station; Converting a destination IP address of the downlink packet from a public IP address of the base station to an internal IP address of a sector to which the downlink packet is to be transmitted when the downlink packet includes a generic routing encapsulation (GRE key) ; And transmitting the downlink packet to a terminal through a sector corresponding to an internal IP address of the sector.

In one embodiment, the sector to which the downlink packet is to be transmitted is determined using a sector field included in the GRE key. Specifically, the sector to which the downlink packet is to be transmitted is a sector mapped to a bit to which a first value of the bits constituting the sector field is allocated, wherein the number of bits constituting the sector field is It is set according to the number of sectors included in the base station.

Meanwhile, the GRE key is generated by the base station and shared with the control station during a network entry procedure of the terminal.

The method may further include replicating the downlink packet by the number of sectors to which the downlink packet is transmitted before the address translation step. In the step, the destination IP address of each of the duplicated downlink packet is converted from the public IP address of the base station to the internal IP address of each sector to which the duplicated downlink packet is to be transmitted.

The transmitting may include determining a connection ID (CID) mapped to a GRE key of the downlink packet; Removing a GRE header from the downlink packet; And transmitting the downlink packet from which the GRE header is removed to the terminal corresponding to the CID together with the CID.

On the other hand, if the GRE key is not included in the downlink packet, converting the destination IP address of the downlink packet from the public IP address of the base station to the internal IP address of the management / signaling module; And transmitting the downlink packet to the management signaling module for processing the downlink packet.

According to another aspect of the present invention, there is provided a method of operating a multi-sector, comprising: receiving a GRE packet including a source IP address, a destination IP, and a GRE key; And selecting a sector to which the GRE packet is to be transmitted using sector information of the GRE key, converting the destination IP address into a sector IP address of the selected sector, and transmitting the GRE packet. The address may be a public IP address. At this time, the sector information is characterized in that the information for distinguishing sectors for independently performing packet communication.

Multi-sector operating method according to another aspect of the present invention for achieving the above object is a public IP of the base station from the source IP address of the uplink packet to the internal IP address of each sector or the internal IP address of the management / signaling module Converting to an address; And transmitting the uplink packet to a control station.

In one embodiment, if the uplink packet is a data packet received from the terminal, prior to the address translation step, determining a GRE key for the uplink packet and a control station to which the uplink packet is to be transmitted; And encapsulating the uplink packet by using a GRE header including the GRE key. In the transmitting step, the encapsulated uplink packet is transmitted to the control station.

At this time, the GRE key is generated by the control station, characterized in that shared with the base station during the network entry procedure of the terminal.

According to still another aspect of the present invention, a multi-sector operating apparatus according to another aspect of the present invention transmits a destination IP address of the downlink data packet from a base station's public IP address when a downlink data packet is received from a control station. An address translation module that converts the source IP address of the uplink data packet from the internal IP address of each sector to the public IP address of the base station when the uplink data packet is received from each sector; And at least one sector that decapsulates the downlink data packet transmitted from the address translation module and transmits it to the terminal, and encapsulates the uplink data packet transmitted from the terminal and transmits the uplink data packet to the address translation module. It includes.

According to the present invention, since the base station including the multi-sector operating apparatus can operate the multi-sector using only one public IP address, there is an effect that it can solve the problem of lack of IP address.

In addition, since the control station is connected through the R6 interface with the address translation module, the management node can be unified to reduce the complexity of management.

In addition, the present invention can reduce the concentration of resources allocated to the operation of the sector by performing the security function that was performed by the conventional sector has the effect that the performance of the base station can be improved.

In addition, since the present invention can determine the sector to which the downlink packet is transmitted using only the GRE key without a separate conversion table, the base station supporting the multi-sector as well as the performance of the base station can be easily implemented.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a schematic block diagram of a multi-sector operating apparatus according to an embodiment of the present invention. In one embodiment, the multi-sector operating apparatus 200 shown in FIG. 2 may be included in or may be a base station capable of transmitting and receiving packets with a control station and a terminal. When included or a base station, the base station may support multi-frequency allocation (Frequency Assignment) to provide communication services to more users by efficiently using frequencies as well as multiple sectors. For convenience, it is assumed that the multi-sector operating apparatus 200 is included in the base station or the base station, and the multi-sector operating apparatus 200 will be described with the base station.

Referring to FIG. 2, the base station 200 receives a downlink packet from a control station 210 connected through an R6 interface, transmits the downlink packet to a terminal 220 connected through an R1 interface, and upwards from the terminal 220 through an R1 interface. A packet is received and transmitted to the control station 210 through the R6 interface, the address translation module 230, at least one sector (240a to 240n, hereinafter referred to as '240'), and the management / signaling module 250.

First, the address translation module 230 receives a downlink packet whose destination IP address is set to the public IP address of the base station from the control station 210, and then converts the destination address of the received downlink packet to the public IP of the base station. The address is converted into an internal IP address of the sector 240 in which the downlink packet is to be transmitted or an internal IP address of the management / signaling module 250 in which the downlink packet is to be transmitted. Here, the source IP address of the downlink packet transmitted from the control station 210 is set to the IP address of ASN-GW (Access Service Network Gateway) which is a control station.

In addition, the address translation module 230 may convert the source IP address of the uplink packet transmitted from each sector 240 or the management / signaling module 250 to the internal IP address of each sector 240 or the management / signaling module 250. Convert from the internal IP address to the base station's public IP address.

Hereinafter, after the address translation module 230 first describes a method of translating a destination IP address of a downlink packet transmitted from the control station 210, the uplink packet transmitted from the sector 240 or the management / signaling module 250 will be described. This section describes how to translate the source IP address.

First, with respect to the downlink packet transmitted from the control station 210, the address translation module 230 converts the destination IP address of the downlink packet into the internal IP address of the sector 240 when the received downlink packet is a data packet. When the received downlink packet is a control packet, the destination IP address of the downlink packet is converted into an internal IP address of the management / signaling module 250.

In one embodiment, the address translation module 230 may determine whether the downlink packet is a data packet or a control packet by determining whether the downlink packet includes a Generic Routing Encapsulation (GRE) key. That is, the address translation module 230 determines that the downlink packet is a data packet when the GRE key is included in the downlink packet, and determines the downlink packet as a control packet when the GRE key is not included in the downlink packet.

Here, the GRE key is used as a data path identifier (Data Path ID) for processing data packets transmitted and received between the base station 200 and the control station 210, the GRE key for the downlink packet by the base station 200 A GRE key for the uplink packet is generated by the control station 210. The two GRE keys exist for one service flow, and these GRE keys are shared with each other by the base station 200 and the control station 210 during a network entry procedure of the terminal. do.

Hereinafter, when the downlink packet is determined to be a data packet, the method of the address translation module 230 to translate the destination IP address of the downlink packet will be described in detail.

When the downlink packet is determined to be a data packet, the address translation module 230 converts a destination IP address of the downlink packet into an internal IP address of the sector 240 to which the downlink packet is to be transmitted. 230 may determine a sector to which a corresponding downlink packet is transmitted using a GRE key included in the downlink packet.

To this end, a GRE key according to the present invention defines a sector field composed of a plurality of bits to indicate a sector for transmitting a downlink packet. That is, a sector field composed of the same number of sectors as the number of sectors is defined in the GRE key, and a bit value is assigned to a bit mapped to a sector to which a downlink packet is transmitted, so that the address translation module 230 transmits such a GRE. By checking the bit value constituting the sector field of the key, it is possible to determine the sector to which the downlink packet is transmitted.

For example, if there are nine sectors, the sector field may consist of nine bits. In this case, if the bit value constituting the sector field of the GRE key is "000000100", the address conversion module 230 determines that the corresponding downlink packet is the third. If the bit value constituting the sector field of the GRE key is “100000000”, the address translation module 230 may determine that the corresponding downlink packet is transmitted to the ninth sector.

As described above, since the present invention can determine the sector to which the corresponding downlink packet is transmitted using the bit values of some bits included in the GRE key, the address translation module 230 separates the destination IP address of the downlink packet to convert the destination IP address. You do not need to have an address translation table.

When the sector to which the downlink packet is to be transmitted is determined according to the above-described method, the address translation module 230 uses the mapping relationship between the sector and the internal IP address of the sector to convert the destination IP address of the downlink packet from the public IP address of the base station. Convert the packet to the internal IP address of the sector to which it will be sent.

In the above-described embodiment, the case where "1" is assigned to only one bit among the bits constituting the sector field of the GRE key has been described. However, in the modified embodiment, "1" is assigned to the plurality of bits. There may be. When "1" is assigned to a plurality of bits, this means that the downlink packet is to be transmitted to the plurality of sectors, that is, the downlink packet is multicast. For example, if the bit value constituting the sector field of the GRE key is "101100000", the address translation module 230 may determine that the downlink packet is transmitted to the sixth, seventh, and ninth sectors.

According to this embodiment, the address translation module 230 replicates the downlink packet by the number of sectors to which the downlink packet is transmitted to transmit the downlink packet to a plurality of sectors, and then the destination of the downlink packet for each replicated downlink packet. The IP address is translated into the internal IP address of the sector mapped with each sector.

The address translation module 230 transmits the downlink packet converted from the public IP address of the base station to the internal IP address of the sector through the above-described process to the corresponding sector.

Meanwhile, if the downlink packet is determined to be a control packet, the address translation module 230 converts the destination IP address of the downlink packet into an internal IP address mapped with the management / signaling module 250 and then manages the downlink packet. To 250.

Next, the function of the address translation module 230 to translate the source IP address of the uplink packet transmitted from each sector 240 or the management / signaling module 250 will be described.

First, when the uplink packet is transmitted from each sector 240, the address translation module 230 converts the source IP address of the source address field included in the GRE header of the uplink packet transmitted from each sector 240 into the inside of each sector. After changing from the IP address to the public IP address of the base station, the uplink packet is transmitted to the control station 210.

In addition, when the uplink packet is transmitted from the management / signaling module 250, the address translation module 230 changes the source IP address of the uplink packet from the internal IP address of the management / signaling module 250 to the public IP address of the base station. Thereafter, the uplink packet is transmitted to the control station 210.

As described above, according to the present invention, the base station 200 need only have one public IP address, and the address translation module 230 included in the base station 200 may have a sector or a management / signaling module to which the corresponding downlink packet is transmitted. Since the target IP address is converted into the internal IP address of the determined sector or the internal IP address of the management / signaling module, the problem caused by the increase in the number of managed nodes can be solved as well as the shortage of IP addresses. .

In addition to the above-described address translation function, the address translation module 230 may also function as an interface unit. In one embodiment, the address translation module 230 may perform a security function of the base station. For example, the address translation module 230 may perform security functions such as IP security (IPsec), access control list (ACL), and filtering.

As such, when the address translation module 230 performs a function of an interface unit performed by each conventional sector, the CPU resource required for driving the sector may be reduced, and thus each sector performs all these functions. In comparison with the case, it is possible to further improve the performance of the base station.

Meanwhile, in the case of a downlink data packet transmitted from the control station 210 and transmitted to each sector 240 through the address translation module 230, IP is used as a transport protocol and GRE is used as a carrier protocol. 3 shows an end point of a packet using a protocol stack of each device. Referring to FIG. 3, it can be seen that the address translation module 230 operates as an endpoint of IP in the downlink data packet and each sector 240 operates as an endpoint of the GRE in the downlink data packet. In FIG. 2, the protocol stack of each sector may be a protocol stack of a digital module included in each sector.

Referring to FIG. 2 again, at least one sector 240 processes data packets among downlink packets transmitted from the control station 210, and receives the downlink packets from the address translation module 230 as described above. ) Or an uplink packet transmitted from the terminal 220 to the address translation module 230. As shown in FIG. 2, each sector 240 includes a digital module 242 and an RF module 244 for processing downlink packets.

The digital module 242 decapsulates the downlink packet received from the address translation module 230 and encapsulates an uplink packet transmitted from the terminal 220 through the RF module 244 which will be described later. Do this. Specifically, the digital module 242 determines the CID (Connection ID) mapped to the GRE key of the downlink packet received from the address translation module 230 with reference to the conversion table, and removes the GRE header from the received downlink packet. After performing the decapsulation process of the received downlink packet, the decapsulated downlink packet is transmitted along with the determined CID to the RF module 244 which will be described later.

In addition, when the uplink packet with the CID is received from the RF module 244, which will be described later, the digital module 242 determines the GRE key mapped to the CID and the IP address of the control station by referring to the conversion table. After encapsulating using the GRE header, the packet is transmitted to the address translation module 230 described above. Thereafter, the uplink packet transmitted to the address translation module 230 is transmitted to the control station 210 in which the source IP address is changed to the base station IP address and mapped to the CID as described above.

The RF module 244 RF-processes the downlink packet transmitted with the CID transmitted from the digital module 242 to the terminal 220 corresponding to the CID through the R1 interface, and transmits the RF packet from the terminal 220 through the R1 interface. The RF packet is transmitted to the digital module 242 after the RF packet to which the CID is transmitted is added.

Next, the management / signaling module 250 processes the control packet among the downlink packets transmitted from the address translation module 230 described above, or generates and transmits an uplink control packet to the address translation module 230 described above. Specifically, it performs management functions such as Telnet, Simple Network Management Protocol (SNMP), and control signaling for transmitting and receiving data packets.

Hereinafter, a method of operating multiple sectors will be described with reference to FIGS. 4 to 7.

First, a process of receiving a downlink data packet and a process of transmitting an uplink data packet in a multi-sector operating apparatus, which may be included in or may be a base station, will be described with reference to FIGS. 4 and 5. Hereinafter, the multi-sector operating apparatus will be described as a base station for convenience of description.

4 is a diagram schematically illustrating a process of receiving a downlink data packet. As shown, the address translation module has a source IP address set to the control station's IP address and a destination IP address set to the base station's public IP address through a physical (HY) layer and a media access control (MAC) layer. Receive a downlink packet including a GRE key (S400).

Subsequently, the address translation module determines whether the received downlink packet includes a GRE key, and when the GRE key is included, determines that the received downlink packet is a downlink data packet and a sector to which the received downlink data packet is delivered. Determine (S410). In one embodiment, the address translation module may determine a sector to which the received downlink data packet is delivered using a GRE key included in the received downlink data packet. In detail, a sector to which a received downlink data packet is transmitted may be determined using bit values of bits constituting a sector field included in a GRE key. For example, a bit assigned to “1” is assigned to a bit value among bits. The sector to be mapped may be determined as a sector to which the downlink data packet is transmitted.

Next, the address translation module converts the destination IP address of the received downlink data packet from the public IP address of the base station to the internal IP address of the sector to which the downlink data packet is transmitted, using the mapping relationship between each sector and the sector IP address. (S420).

According to an embodiment, when there are a plurality of bits in which a bit value of "1" is allocated among the bits of the sector field, the received downlink data packet means that the received downlink data packet should be transmitted to the plurality of sectors. The data packet is duplicated by the number of bits allocated with "1" and the destination IP address is converted from the public IP address of the base station to the internal IP address of the corresponding sector for each duplicated downlink data packet.

Then, when the address translation module transmits the downlink data packet whose destination IP address is converted to the internal IP address of each sector to the corresponding sector, the digital module of the corresponding sector refers to the GRE key of the received downlink data packet by referring to the conversion table. The CID to be mapped is determined (S430).

Next, the digital module decapsulates the received downlink data packet by removing the GRE header from the downlink data packet received from the address translation module and transmits the downlink packet with the CID to the RF module. After the RF process and transmits to the terminal corresponding to the CID through the R1 interface (S440).

5 is a diagram schematically illustrating a transmission process of an uplink data packet. As shown, first, the RF module of each sector receives an uplink data packet together with the CID from the terminal (S500).

Subsequently, when the RF module RF-processes the received uplink data packet and provides it to the digital module, the digital module determines the IP address and the GRE key of the control station mapped to the CID received with the uplink data packet by referring to the conversion table. The uplink data packet is encapsulated by adding a GRE header including a GRE key to the received uplink data packet (S510).

Next, when the digital module provides the uplink data packet in which the internal IP address of the corresponding sector is set as the source IP address and the control station's IP address is set as the destination IP address, to the address translation module (S520), the address translation module receives the received IP address. The source IP address included in the GRE header of the uplink data packet is converted from the internal IP address of each sector to the public IP address of the base station (S530).

Thereafter, the address translation module transmits an uplink data packet whose source IP address is converted from the IP address of each sector to the public IP address of the base station to the control station through the R6 interface via the MAC layer and the PHY layer (S540).

Hereinafter, a process of receiving a downlink control packet and a process of transmitting an uplink control packet in a base station supporting multi-sector operation will be described with reference to FIGS. 6 and 7.

6 is a diagram schematically illustrating a receiving process of a downlink control packet. First, the address translation module receives a downlink packet having a source IP address set to an IP address of a control station and a destination IP address set to a public IP address of a base station through the PHY layer and the MAC layer (S600).

Subsequently, the address translation module determines whether the received downlink packet includes a GRE key. If the GRE key is not included, the address translation module determines that the received downlink packet is a downlink control packet and the received downlink control packet is managed / signaling module. It is determined to be transmitted to (S610).

Next, when the address translation module converts the destination IP address of the received downlink control packet into an internal IP address of the management / signaling module and provides it to the management / signaling module (S620), the management / signaling module transmits the PHY and MAC layers. The downlink control packet is received (S630).

7 is a diagram schematically illustrating a transmission process of an uplink control packet. As shown, the management / signaling module generates an uplink control packet where the source IP address is set to the internal IP address of the management / signaling module and the destination IP address is set to the IP address of the control station to which the corresponding uplink control packet will be sent. After (S700), and transmits to the address translation module (S710).

Subsequently, the address translation module receives the uplink control packet transmitted from the management / signaling module through the PHY and MAC layers (S720), and then the base station at the internal IP address of the management / signaling module receives the source IP address of the received uplink control packet. Convert to a public IP address of the transmission through the R6 interface to the control station (S730).

The above-described multi-sector operating method is implemented in the form of program instructions that can be executed by various computer means and can be recorded in a computer-readable recording medium. In this case, the computer-readable recording medium may include program instructions, data files, data structures, and the like, alone or in combination. On the other hand, the program instructions recorded on the recording medium may be those specially designed and configured for the present invention or may be available to those skilled in the art of computer software.

The computer-readable recording medium includes a magnetic recording medium such as a magnetic medium such as a hard disk, a floppy disk and a magnetic tape, an optical medium such as a CD-ROM and a DVD, a magnetic disk such as a floppy disk, A magneto-optical media, and a hardware device specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. The recording medium may be a transmission medium such as an optical or metal wire, a waveguide, or the like including a carrier wave for transmitting a signal specifying a program command, a data structure, or the like.

Program instructions also include high-level language code that can be executed by a computer using an interpreter as well as machine code such as produced by a compiler. The hardware device described above may be configured to operate as one or more software modules to perform the operations of the present invention, and vice versa.

On the other hand, those skilled in the art will understand that the present invention described above can be implemented in other specific forms without changing the technical spirit or essential features.

For example, in the above-described embodiment, since the multi-sector operating apparatus is assumed to be included in or included in a base station, the address translation module determines a sector to which a downlink packet is transmitted among sectors included in the base station, It has been described as converting the destination IP address to the internal IP address of the determined sector.

However, since the multi-sector operating apparatus can be included in any apparatus as long as the apparatus can transmit and receive packets in addition to the base station, in this case, the address translation module of the multi-sector operating apparatus can independently transmit and receive packets within the packet transceiver. The packet transmission / reception module of the downlink packet is determined, and thus, the destination IP address of the downlink packet is converted into the internal IP address of the determined packet transmission / reception module. According to this embodiment, the source IP address for the uplink packet is converted from the internal IP address of the packet transceiver module to the public IP address of the packet transceiver.

Therefore, it is to be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

1 is a diagram schematically illustrating a configuration of a general base station supporting multiple sectors.

2 is a diagram schematically illustrating a configuration of a multi-sector operating apparatus according to an embodiment of the present invention.

3 shows an endpoint of a downlink data packet using the protocol stack of each device.

4 is a diagram schematically illustrating a receiving process of a downlink data packet according to an embodiment of the present invention.

5 is a diagram schematically illustrating a process of receiving an uplink data packet according to an embodiment of the present invention.

6 is a diagram schematically illustrating a receiving process of a downlink control packet according to an embodiment of the present invention.

7 is a diagram schematically illustrating a process of receiving an uplink control packet according to an embodiment of the present invention.

Claims (24)

Receiving a downlink packet from which a destination IP address is set to a public IP address of a base station from a control station; Converting a destination IP address of the downlink packet from a public IP address of the base station to an internal IP address of a sector to which the downlink packet is to be transmitted when the downlink packet includes a generic routing encapsulation (GRE key) ; And And transmitting the downlink packet to a terminal through a sector corresponding to an internal IP address of the sector. The method of claim 1, And a sector to which the downlink packet is transmitted is determined using a sector field included in the GRE key. The method of claim 2, And a sector to which the downlink packet is to be transmitted is a sector mapped to a bit to which a first value of the bits constituting the sector field is allocated. The method of claim 2, The number of bits constituting the sector field is set according to the number of sectors included in the base station. The method of claim 1, Wherein the GRE key is generated by the base station and shared with the control station during a network entry procedure of the terminal. The method of claim 1, wherein when there are a plurality of sectors to which the downlink packet is to be transmitted, Before the address translation step, further comprising duplicating the downlink packet by the number of sectors to which the downlink packet is to be transmitted; And in the address translation step, converting a destination IP address of each of the downlinked downlink packets from a public IP address of the base station to an internal IP address of each sector to which the downlinked downlink packet is to be transmitted. . The method of claim 1, wherein the transmitting step, Determining a connection ID (CID) mapped to a GRE key of the downlink packet; Removing a GRE header from the downlink packet; And And transmitting the downlink packet from which the GRE header has been removed to the terminal corresponding to the CID together with the CID. The method of claim 1, Converting a destination IP address of the downlink packet from a public IP address of the base station to an internal IP address of a management / signaling module when the GRE key is not included in the downlink packet; And And transmitting the downlink packet to the management signaling module for processing of the downlink packet. Receiving a GRE packet including a source IP address, a destination IP, and a GRE key; And Selecting a sector to which the GRE packet is to be transmitted using sector information of the GRE key, converting the destination IP address into a sector IP address of the selected sector, and transmitting the GRE packet; And wherein the destination IP address is a public IP address. 10. The method of claim 9, The sector information is information for distinguishing sectors that independently perform packet communication. Converting a source IP address of an uplink packet from an internal IP address of each sector or an internal IP address of the management / signaling module to a public IP address of the base station; And And transmitting the uplink packet to a control station. 12. The method of claim 11, wherein if the uplink packet is a data packet received from a terminal, before the address translation step, Determining a GRE key for the uplink packet and a control station to which the uplink packet is to be transmitted; And Encapsulating the uplink packet using a GRE header including the GRE key, In the transmitting step, transmitting the encapsulated uplink packet to the control station. The method of claim 12, The GRE key is generated by the control station and shared with the base station during the network entry procedure of the terminal. When the downlink data packet is received from the control station, the destination IP address of the downlink data packet is converted from the public IP address of the base station to the internal IP address of the sector to which the downlink data packet is to be transmitted. An address translation module for converting a source IP address of an uplink data packet from an internal IP address of each sector to a public IP address of the base station; And At least one sector for decapsulating the downlink data packet transmitted from the address translation module and transmitting the decapsulation data packet to the terminal, and for encapsulating the uplink data packet transmitted from the terminal and transmitting the encapsulation data packet to the address translation module. Multi-sector operating apparatus comprising a. The method of claim 14, A management / signaling module which receives and processes a downlink control packet from the address translation module, generates an uplink control packet, and transmits the uplink control packet to the address translation module; When the downlink control packet is received from the control station, the address translation module converts a destination IP address of the downlink control packet from a public IP address of the base station to an internal IP address of the management / signaling module. When the uplink control packet is received from the management / signaling module, the source IP address of the uplink control packet is converted from the internal IP address of the management / signaling module to the public IP address of the base station and transmitted to the control station. Multi-sector operating apparatus, characterized in that. The method of claim 15, And the address translation module classifies the downlink data packet and the downlink control packet using a GRE key. The method of claim 14, And the address translation module determines a sector to which the downlink data packet is transmitted using a sector field of a GRE key included in the downlink data packet. The method of claim 17, And the address translation module determines a sector to which the downlink data packet is transmitted as a sector mapped to a bit to which a first value among bits constituting the sector field is allocated. 19. The method of claim 18, wherein when there are a plurality of bits to which the first value is allocated among the bits constituting the sector field, The address translation module duplicates the downlink data packet by the number of bits to which the first value is assigned, and converts the downlink packet from the public IP address of the base station to a destination IP address for each of the downlink data packets. A multi-sector operating device, which translates into an internal IP address of each sector to be transmitted. The method of claim 18, And the number of bits constituting the sector field is set according to the number of sectors. The method of claim 14, The GRE key for the downlink data packet is generated by the base station and shared with the control station during the network entry procedure of the terminal, and the GRE key for the uplink data packet is generated by the control station to enter the network of the terminal And the base station is shared with the base station during the procedure. The method of claim 14, wherein the at least one sector is A digital module for determining a CID mapped to a GRE key of the downlink data packet, decapsulating the downlink data packet, determining a GRE key and a control station mapped to the uplink data packet, and then encapsulating the uplink data packet; And And an RF module for transmitting the decapsulated data packet with the CID to the terminal, and receiving the uplink data packet with the CID from the terminal and transmitting the decapsulated data packet to the digital module. The method of claim 14, The address translation module performs a security function including at least one of IPsec (IP Security), Access Control List (ACL), and Filtering. The method of claim 14, The multi-sector operating apparatus is characterized in that for supporting the operation of multi-frequency multilocation (FA).

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