KR20090020144A - Method and base station transceiver subsystem for frequency assignment according to load balancing in evdo system - Google Patents

Abstract

An FA(frequency assignment) use method in an EVDO system for improving throughput about data transmission about load balancing and a base station therefor are provided to transmit the data transfer service of the high satisfaction to a user and to read load balancing about the FA. A base station transmits information about a plurality of FA used to a terminal(S202). The base station receives the EVDO(EVolution Data Only) call transmitted from the terminal through RATI(Random Access Terminal ID) and the provisional FA which is determined by using the hash function(S204). The base station receives the EVDO call. And the base station decides whether the EVDO call is the local call whether to be hand-off call(S206). If the received EVDO call of the base station is a local call, the FA number which the base station uses is confirmed(S208). The base station selects the FA in which the amount of data traffic is small(S210). The base station assigns the resources to the FA by the terminal(S212). The base station reports the information about the FA through TCA(Traffic Channel Assignment) message to the terminal(S214).

Description

Method of using FA considering load balancing in EVDO system and base station therefor {Method and Base Station Transceiver Subsystem for Frequency Assignment according to Load Balancing in EVDO System}

The present invention relates to a method of using FA considering load balancing in an EVDO system and a base station therefor. More specifically, the present invention uses a FA usage method considering load balancing of the amount of data traffic in an EVDO system, whereby data traffic is collected at a specific FA in the EVDO system, thereby increasing the amount of data traffic for each FA. It is effective to solve the problem that Load Balancing can be broken, and load in EVDO system that has the effect of providing the users with high satisfaction data transmission service by improving the throughput for data transmission. It relates to a method of using FA in consideration of balancing and a base station therefor.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) and the second generation cellular (Pellular) / Personal Communication Service (PCS). International Mobile Telecommunication-2000 (IMT-2000) has been developed.

The IMT-2000 service may be classified into a code division multiple access (CDMA) 2000 1x service and a CDMA 2000 1x EVDO service. The CDMA 2000 1x service uses the IS-95C network, which has evolved from the existing IS-95A and IS-95B networks. Means service. Therefore, the CDMA 2000 1x service can provide various multimedia services (AOD and VOD) as well as improve existing voice and WAP (Wireless Application Protocol) services.

Meanwhile, the IMT-2000 system for multimedia mobile communication service has defined the standard of the synchronous IMT-2000 system in the 3rd Generation Partnership Projects (3GPPP2), an international standardization organization, and is a method for high-speed packet transmission. Based on the company's high data rate (HDR), it was named CDMA 2000 1x Evolution Data Optimized (EVDO) and confirmed as an international standard. The CDMA 2000 1x EVDO (hereinafter referred to as "EVDO") specifies that only data is transmitted in the CDMA 2000 1x communication standard.

In such an EVDO system, a plurality of channels, such as a pilot channel, a traffic channel, and an access channel, are set for a terminal requesting a call connection through frequency assignment (FA).

As the number of EVDO service subscribers for data transmission services has increased, FA usage techniques have been developed to properly distribute subscribers by FA. The FA usage method of load balancing the conventional subscribers by FA is described in detail with reference to FIG.

1 is a flowchart illustrating a FA use method in a conventional EVDO system.

1 is a flowchart illustrating a method for allocating an FA to a terminal to which a base station in a conventional EVDO system transmits and receives (packet) data.

Referring to FIG. 1, a method for allocating FA to a terminal to which a base station in a conventional EVDO system wants to transmit and receive (packet) data is performed in step S100 of turning on a power of the terminal, and the terminal is informed about the FA currently operated by the base station. Receiving the, and using the RATI and the hash (Hash) function to determine the FA of the FA currently in operation (S 102), the terminal sending an EVDO call using the FA determined in step S 102 (S 104) In step S106, the base station receives the EVDO call sent in step S104, and allocates a resource to the terminal to the FA determined in step S102 (S106). Using step (S 108), when the call is terminated, the step of maintaining the idle (Idle) state in the FA in use (S 110) is performed.

The random access terminal ID (RATI) for determining the FA in step S 102 described above is a random terminal identification code for a randomly set terminal, and a hash function includes information about a plurality of FAs received from the base station by the terminal. A function for determining an FA to synchronize with a base station among a plurality of FAs by using a random terminal identification code RATI. Using the hash function, the FA determined by the terminal is determined as it is in the base station and resources are allocated.

However, the terminals of the EVDO system for transmitting and receiving only packet data may have significantly different data usage. In the above-described conventional FA allocation method, the number of terminals of the user may be balanced. Data traffic is concentrated in the FA, which causes a problem of balancing the amount of data traffic per FA, which causes a significant drop in throughput for data transmission by all terminals assigned to the specific FA. Have the problem of experiencing.

An object of the present invention to solve this problem, by using the FA use method considering the load balancing of the amount of data traffic in the EVDO system, by the data traffic to the specific FA in the EVDO system by the FA-specific data Its purpose is to solve the problem that Load Balancing for traffic volume may be broken.

Another object of the present invention is to provide a user with an improved throughput for data transmission by using an FA usage method considering load balancing of data traffic amount in an EVDO system.

According to an aspect of the present invention for achieving this object, in a method in which a base station in an EVDO (EVolution Data Only) system using multiple FAs using FA in consideration of load balancing between FAs, a) the base station transmitting information about the plurality of FAs currently in operation to the terminal; (b) the base station originating from the terminal through a temporary FA determined by the terminal using a RATI and hash function; Receiving an EVDO call, (c) the base station receiving the EVDO call, and determining whether the EVDO call is a local call or a handoff call, and (d) the base station receives the EVDO call. If the EVDO call in step (c) is the local call, checking the number of FAs currently available by the base station; (e) the base station determines the smallest amount of data traffic among the currently available FAs; Selecting a determined FA, (f) the base station assigning a resource to the determined FA that will use the EVDO by the terminal, and (g) the base station transmitting information about the determined FA to a TCA (Traffic Channel) It provides a method of using FA in consideration of load balancing in the EVDO system, characterized in that it comprises the step of notifying the terminal through an Assignment) message.

According to another aspect of the present invention for achieving the above object, in the base station in the EVDO (EVolution Data Only) system to perform the function of using the FA in consideration of the load balancing between a plurality of FA, the terminal A FA information transmission management unit which performs a function of transmitting information on the plurality of FAs currently in operation so that a temporary FA is determined by using a RATI and a hash function; An EVDO call reception manager configured to receive an EVDO call originated from the terminal from the terminal through the temporary FA; An EVDO call type determination manager configured to determine whether the EVDO call received by the EVDO call reception manager is a local call or a handoff call; An available FA manager that stores information on currently available FAs and checks the number of FAs currently available when the EVDO call is determined to be a local call by the EVDO call type determination manager; If the EVDO call is the local call, a function of selecting a determined FA is selected in consideration of the data traffic amount and the number of subscribers for the currently available FA stored in the available FA management unit, and the EVDO call is handed off. off), in the case of a call, a confirmation FA decision management unit that performs the function of determining the confirmation FA; An FA resource allocation manager that performs a function of allocating a resource to the determined FA selected by the determined FA determination manager; And a determined FA information notification management unit for notifying the terminal of information about the determined FA to the terminal through a TCA (Traffic Channel Assignment) message. To provide.

As described above, according to the present invention, by using the FA usage method considering the load balancing of the amount of data traffic in the EVDO system, the amount of data traffic for each FA in the EVDO system is driven to the specific FA This has the effect of solving the problem that Load Balancing for the server may be broken.

In addition, according to the present invention, by using the FA use method considering the load balancing of the amount of data traffic in the EVDO system, by improving the throughput (throughput) for data transmission service to the user with high satisfaction Has the effect of providing.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function is obvious to those skilled in the art or may obscure the gist of the present invention, the detailed description thereof will be omitted.

2 is a flowchart illustrating a method of using FA in consideration of load balancing in an EVDO system according to a preferred embodiment of the present invention.

Referring to FIG. 2, a method of using a FA considering load balancing between FAs by a base station in an EVDO (EVolution Data Only) system using multiple FAs includes information on a plurality of FAs currently operated by the base station as a terminal. In step S202, the base station receives an EVDO call sent from the terminal through a temporary FA determined by the terminal using a RATI and hash function (S204), and the base station in the EVDO system receives the EVDO call. Receiving the call, and determining whether the EVDO call is a local call or a hand off call (S 206), if the EVDO call in step S 206 is a local call, the number of FA currently available to the base station (S 208), the base station selects a determined FA having the smallest amount of data traffic among the currently available FAs (S 210), and the base station allocates resources to the determined FAs for the terminal (S 212). Information about the FA A step (S 214), and a terminal to notify the terminal through the TCA (Traffic Channel Assignment) message is performed by a step (S 216) to use the EVDO using fixed FA.

The above-described step S202 is performed after the terminal is turned on (S200).

In step S202 described above, the information on the currently operating multiple FAs received by the terminal from the base station is frequency information of the base station and is transmitted through a sector parameter message.

The RATI (Randum Access Terminal ID) in step S204 described above is a terminal identification code for a terminal that is randomly set, and a hash function uses a plurality of FAs and information on a plurality of FAs received from the base station by the terminal. A function for determining a temporary FA to be synchronized with a base station among FAs. A method of determining such a temporary FA will be described in detail with reference to FIG. 3.

If there are two or more FAs with the smallest amount of data traffic among the FAs currently available in step S210 described above, in step S212 described above, the FA with the smallest number of subscribers is selected as the confirmed FA. That is, the criterion for selecting the final FA is the amount of data traffic, and if the FA with the smallest amount of data traffic is not selected, the current number of subscribers is next.

After the above-described step S216, when the call is terminated, the terminal further maintains an idle state at the determined FA.

In step S 206, if the EVDO call received by the base station from the terminal is a handoff call, the base station allocates resources to the determined FA using the temporary FA as the determined FA for the terminal (S 207). Is further performed using SDO (S209) using the determined FA. In addition, after the call is terminated after step S209, the terminal maintains an idle state at the determined FA.

According to a preferred embodiment of the present invention, a base station in an EVDO (EVolution Data Only) system that performs a function of using a FA in consideration of load balancing between a plurality of FAs is a FA information transmission management unit and an EVDO call reception management unit. It includes an EVDO call type determination management unit, an available FA management unit, a determined FA determination management unit, an FA resource allocation management unit, and a determined FA information notification management unit.

An internal configuration of a base station that performs an FA use function in consideration of load balancing in an EVDO system according to an exemplary embodiment of the present invention will be described in detail below.

The FA information transmission manager performs a function of transmitting information on a plurality of FAs currently in operation so that the temporary FA is determined by the terminal using the RATI and hash functions.

The EVDO call reception manager performs a function of receiving an EVDO call sent from the terminal from the terminal through the temporary FA.

The EVDO call type determination management unit determines whether the EVDO call received by the EVDO call reception management unit is a local call or a handoff call.

The available FA manager stores information on the currently available FA, and when the EVDO call is determined to be a local call by the EVDO call type determination manager, checks the currently available FA number.

If the EVDO call received by the EVDO call reception management unit is a local call, the final FA decision management unit selects the final FA in consideration of the amount of data traffic and the number of subscribers for the currently available FA stored in the available FA management unit. When the EVDO call received by the EVDO call reception management unit is a handoff call, the temporary DO is determined to determine the final FA.

The FA resource allocation manager performs a function of allocating resources to the determined FA selected by the determined FA decision manager.

The determined FA information notification management unit performs a function of notifying the terminal of information about the determined FA through a TCA (Traffic Channel Assignment) message.

3 is a view for explaining a method for determining a temporary FA using a RATI and a hash function according to a preferred embodiment of the present invention.

FIG. 3 is a diagram illustrating a method for determining a temporary FA using a RATI and a hash function in step S 202 of a procedure for using a FA in consideration of load balancing in FIG. 2.

Referring to FIG. 3, the terminal 350 receives a sector parameter message 340 including information about three FAs (FA 1, FA 2, and FA 3) from the base station 300 to determine a temporary FA. Done. Information about the three FAs (FA 1, FA 2, and FA 3) is the frequency information that the base station 300 has, which is carried in the sector parameter message 340 and transmitted to the terminal 350.

Referring to FIG. 3, base station 300 has three frequencies 316, 363, and 275, which are assigned to FA 1 310, FA 2 320, and FA 3 330, respectively.

Meanwhile, the terminal 350 obtains a terminal identification code for a randomly set terminal called a RATI (Randum Access Terminal ID). The RATI value and information about the three FAs described above are used as variables of a hash function. The hash function value is obtained, and the hash function value becomes a frequency at which the terminal synchronizes with the base station, and becomes a temporary FA determined by the terminal.

4 is a detailed call processing procedure flow diagram for a method of using FA in consideration of load balancing in an EVDO system according to a preferred embodiment of the present invention.

FIG. 4 is a flowchart of a detailed call processing procedure for actually implementing a FA usage method considering load balancing in the EVDO system described above with reference to FIG. 2.

Referring to FIG. 4, a detailed call processing procedure for actually implementing a FA usage method considering load balancing in an EVDO system is performed in 32 steps.

Referring to FIG. 4, a detailed call processing procedure for actually implementing a FA usage method considering load balancing in an EVDO system is performed in 32 steps.

Referring to FIG. 4, in step (1), an access channel (Access Terminal: AT, hereinafter referred to as "AT") is connected to an access channel (DO channel element controller: DEC, hereinafter referred to as "DEC"). A connection request message and a route update message are transmitted through a channel.

In step (2), the DEC receives an access channel ACK (ACACK), which is a response message to the connection request message and the route update message, received in step (1) to the control channel (AT). Transmit through Control Channel).

In step (3), the DEC processes an access channel packet indication message through a resource management processor (Do Resource Handler (DRH), hereinafter referred to as “DRH”). , Hereinafter referred to as "DCC".

In step (4), the DCC requests a session retrieval request message (Session Retrieve Request Message) to request session information to a wireless network / IP-based external network matching device (IPP). ). The session information has information about the terminal and is defined in IS-878 (1xEVDO Inter-Operability Specification (ISO) for CDMA 2000 Access Network Interfaces).

In step 5, the IPP forwards a Session Retrieve Request Message to request session information to a Data Location Register (DLR).

In step (6), the DLR retrieves session information about the AT from the DB, and sends the retrieved result to the Session Retrieve Response Message to the IPP.

In step 7, the IPP sends a result of the session information received from the DLR to the DCC.

Steps (4), (5), step (6), and step (7) are steps performed in case of an outgoing call, and in case of an incoming call, steps (4), step (5), step (6), And instead of step 7 steps 4 ', 5', 6 'and 7' are performed. In other words, if in step (1) the Connection Request Message and the Route Update Message are responses to the Page, then the DCC in the Steps 4 'and 5' In response, PageConf is passed to the DLR via IPP.

In steps 6 'and 7', the DLR transmits to the DCC via the IPP as a PageConfAck that the DLR has normally received PageConf.

In step (8), after DCC performs de-packetizing, it confirms that it is a connection request message, and requests channel element (CE) allocation to DEC through DRH. For this purpose, an Allocation Traffic Channel Request Message is transmitted.

In step 9, the DEC processes an Allocation Traffic Channel Request Message and responds with an Allocation Traffic Channel Response Message via the DRH.

Step 9 consists of four sub-steps (Step 9-1), Step 9-2, Step 9-3, and Step 9-4, which are the core data of the present invention. In this step, load balancing is performed on the amount of traffic.

In step 9-1, the DEC checks the number of FAs currently used in the sector.

In step 9-2, the DEC manages the amount of FA-specific traffic and the Allocation Traffic Channel Request Message, which is last managed at the moment of receiving the Allocation Traffic Channel Request Message. Check the number of subscribers at the moment of receipt.

A separate management variable is designated and managed for the 2-second average traffic statistics for each FA. The 2-second average traffic for each FA can be obtained by dividing 2 seconds from the total amount of traffic measured for 2 seconds.

In step 9-3, the DEC determines the FA to be given to the terminal according to a specific condition. The above specific conditions include the first FA decision priority (traffic amount) and the second FA decision priority (number of subscribers). The FA determined by the first FA decision priority is the FA with the lowest 2-second average traffic, and the FA determined by the second FA decision priority is the FA with the lowest number of instant subscribers.

In step 9-4, the DEC assigns a channel element (CE) to the selected FA and responds to the DCC through the DRH using this as an Allocation Traffic Channel Response Message. The channel element CE is one of a plurality of channel elements in the base station channel card.

In step 10, the DCC allocates a resource control processor (Do Media Controller: DMC, hereinafter referred to as “DMC”), and then delivers a Create Request message to request processing module allocation to the DMC. do.

The reason for allocating the processing module to the DMC is that call processing is performed by the DCC, but actual data transmission is performed by the DMC.

This step 10 allocates the DMC by referring to channel (CH) allocation information allocated by the DEC in the above-described step (9).

In step 11, the DEC and the DMC establish a Switched Virtual Connection (SVC) connection for frame transmission. Frame means Asynchronous Transfer Mode (ATM) data in Cell unit, and it transfers data based on ATM between base station (BTS, ANTS) and base station controller (BSC, ANC). It is setting up an SVC connection for ATM transmission.

In step 12, the DMC processes a Create Request message and responds with a Create Response message.

In step 13, the DCC transmits the number of base stations (Base Station Transceiver Subsystem (BTS) or Access Network Transceiver Subsystem (ANTS)) that are currently allocated to the DEC via the DMC. Soft handoff count indication message (Soft Hand off Count Indication Message) is transmitted.

In step 14, the DCC packetizes a Traffic Channel Assignment Message and delivers it to the DEC.

The aforementioned step 14 is a traffic channel assignment message with reference to FA and channel element (CE) information for a terminal acquired by the DCC through an Allocation Traffic Channel Response Message in the aforementioned step (9). Create a (Traffic Channel Assignment Message).

This step is for step S 214 described above with reference to FIG. 2, although the temporary FA obtained by the terminal using the RATI and the hash function is determined, the base station determines the amount of data traffic and the amount of data traffic in step (9). If it is determined to be a confirmed FA other than the temporary FA in consideration of the number of subscribers, it is a step of generating a traffic channel assignment message including the determined FA and channel element (CE) information to the terminal. .

If there are three FAs currently in operation, and the temporary FA determined as a result of the terminal using the RATI and HASH functions is 1 FA, the FA having the smallest traffic amount and the number of subscribers is determined to be 3 FA, in step 9 above. When generating a traffic channel assignment message, the channel information is informed about 3FA.

In step 15, the DEC transmits a Traffic Channel Assignment Message to the AT.

In step 16, the AT transmits a pilot packet on the reverse link and the DEC acquires it so that the reverse link is turned on (enabled).

In step 17, the DEC informs the DCC of the Mobile Acquired Indication via the DMC. Since DCC is in charge of call processing and DMC is in charge of the actual data flow, it always informs DCC of Mobile Acquired Indication via DMC to send a message from DCC to AT.

In step 18, the DCC informs the DCC of the Mobile Acquired Indication via the DMC.

In step 19, the AT transmits a DRC, and if a DRC (DRC) lock occurs in the DEC, the AT notifies the DMC using Forward Desired Indication. DRC is the content delivered through the DRC channel defined in IS-856 (EVDO standard) Physical Layer. DRC Lock is to inform DRC channel status. When DRC Lock is set, it means that the environment can transmit data. In the case of DRC Unlock, it means that the data cannot be transmitted through Forward. .

In step 20, the DMC informs the DCC of the DEC in charge of the current forward.

In step 21, the DMC packetizes a Reverse Traffic Channel Ack Message and forwards a Reverse Traffic Channel Ack Message to the DEC.

The reverse traffic channel acknowledgment message is a message for notifying the terminal when a reverse traffic channel, which is a reverse path between the terminal and the base station channel, operates normally.

In step 22, the DEC sends a Reverse Traffic Channel Ack Message (RTCAck Message) to the Forward Traffic Channel.

In step 23, the AT transmits a traffic channel complete message to the reverse traffic channel.

In step 24, the DEC notifies the DMC that it has received a message on the Reverse Traffic Channel.

In step 25, the DMC performs depacketizing and transmits a traffic channel complete message to the DCC.

In step 26, the DCC delivers the number of base station transceiver subsystems (BTSs) currently assigned to the DEC via the DMC.

In step 27, the DCC sends a Connected Indication Message to the DMC to indicate that the traffic channel allocation is completed.

In step 28, the DMC transmits a connection request message to the RPP in order to request a connection with a radio packet interface processor (RPP).

In step 29, the RPP processes the connection request message received by the RPP, and responds to the DMC with a connection response message.

In step 30, the DMC processes a Connected Indication Message, and transmits a Connected ACK Message to the DCC.

In step 31, the RPP transmits a Registration Request Message (RRQ Message) to the PDSN for connection with a Packet Data Service Node (PDSN). The RRQ message follows the A11 interface standard. One is an A-interface standard that handles signaling between BSC and PDSN.

In step 32, the PDSN processes a Registration Request Message (RRQ Message), and responds with a Registration Response Message (RPP).

 However, steps 31 and 32 are necessary for assigning Simple IP only at the first attempt.

However, the base station performing the FA usage function considering load balancing in the EVDO system according to the preferred embodiment of the present invention includes a base station channel control processor (DEC), a resource management processor (DRH), a call processing processor (DCC), and a resource. One or more of a control processor (DMC), a wireless network / IP based external network matching device (IPP), and a data location register (DLR).

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, the present invention is applied to the FA usage method DP in the EVDO system, proposes a FA usage method in consideration of the load balancing (Load Balancing) for the amount of data traffic in the EVDO system, accordingly specified in the EVDO system It solves the problem that Load Balancing of data traffic amount by FA is broken due to data traffic at FA and improves throughput for data transmission to provide users with high satisfaction data transmission service. It is a very useful invention that provides an effect.

1 is a flowchart illustrating a method of using FA in a conventional EVDO system;

2 is a view for explaining a method for determining a temporary FA using a RATI and a hash function according to a preferred embodiment of the present invention;

3 is a flowchart illustrating a method of using FA in consideration of load balancing in an EVDO system according to a preferred embodiment of the present invention;

4 is a detailed call processing procedure flow diagram for a method of using FA in consideration of load balancing in an EVDO system according to a preferred embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

300: base station

350: terminal

Claims (10)

In a method in which a base station in an EVDO (EVolution Data Only) system using multiple FAs uses FAs in consideration of load balancing between FAs, (a) the base station transmitting information on the plurality of FAs currently in operation to a terminal; (b) the base station receiving an EVDO call sent from the terminal through a temporary FA determined by the terminal using a RATI and a hash function; (c) the base station receiving the EVDO call and determining whether the EVDO call is a local call or a handoff call; (d) if the EVDO call in step (c) received by the base station is the local call, checking the number of FAs currently available by the base station; (e) the base station selecting a determined FA having the smallest amount of data traffic among the currently available FAs; (f) the base station allocating resources to the determined FA that will use the EVDO by the terminal; And (g) the base station notifying the terminal of the information on the determined FA through a TCA (Traffic Channel Assignment) message; Method for using FA in consideration of load balancing in the EVDO system comprising a. The method of claim 1, The RATI (Randum Access Terminal ID) in the step (a), Method for using FA in consideration of load balancing in the EVDO system, characterized in that the terminal identification code for the terminal is set at random. The method of claim 1, The information on the currently operating multiple FAs transmitted by the base station to the terminal in the step (a), The method of claim 1, wherein the base station includes a plurality of frequency information and is transmitted through a sector parameter message. The method of claim 1, The hash function in step (b), And a function for determining the temporary FA to be synchronized with the base station among the plurality of FAs by using the information on the currently operating plurality of FAs received from the base station and the RATI for the terminal. How to use FA with load balancing in EVDO system. The method of claim 1, In step (e), if there are two or more FAs with the smallest amount of data traffic among the currently available FAs in step (e), in step (f), the FAs with the smallest number of subscribers among two or more FAs with the smallest amount of data traffic are selected. A method for using FA in consideration of load balancing in an EVDO system, characterized in that is selected as the determined FA. The method of claim 1, After the step (h), And when the call is terminated, the terminal maintaining an idle state at the determined FA. The method of claim 1, In step (a), And a step performed after the terminal is powered on. The method of claim 1, If the EVDO call in step (c) is the Hand off call, (c1) the base station allocating resources to the determined FA using the temporary FA as the determined FA for the terminal; And (c2) the terminal using the EVDO using the determined FA Method for using FA in consideration of the load balancing in the EVDO system, characterized in that it further comprises. The method of claim 8, After the step (c2), And when the call is terminated, the terminal maintaining an idle state at the determined FA. A base station in an EVDO (EVolution Data Only) system that performs a function of using a FA in consideration of load balancing between a plurality of FAs, A FA information transmission management unit which performs a function of transmitting information on the plurality of FAs currently in operation so that a temporary FA is determined by the terminal using a RATI and a hash function; An EVDO call reception manager configured to receive an EVDO call originated from the terminal from the terminal through the temporary FA; An EVDO call type determination manager configured to determine whether the EVDO call received by the EVDO call reception manager is a local call or a handoff call; An available FA manager that stores information on currently available FAs and checks the number of FAs currently available when the EVDO call is determined to be a local call by the EVDO call type determination manager; If the EVDO call is the local call, a function of selecting a determined FA is selected in consideration of the data traffic amount and the number of subscribers for the currently available FA stored in the available FA management unit, and the EVDO call is handed off. off), in the case of a call, a confirmation FA decision management unit that performs the function of determining the confirmation FA; An FA resource allocation manager that performs a function of allocating a resource to the determined FA selected by the determined FA determination manager; And Defining FA information notification management unit for notifying the terminal of the information on the determined FA through a TCA (Traffic Channel Assignment) message A base station for performing a FA use function in consideration of the load balancing in the EVDO system comprising a.

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