KR20050121000A - Method for call-assignment for 1x ev-do system having multi fa - Google Patents

Abstract

The present invention relates to a call channel allocation method in a 1x EV-DO system.

The present invention provides a 1x EV-DO system having a multi-FA which provides a data service requested by the 1x Evolution Data Optimized (EV-DO) system to a CDMA 2000 1X system or a wide-band code division multiple access (WCDMA) system. CLAIMS 1. A method for allocating a call channel in a mobile station, comprising: (a) receiving a request for the data service from a mobile communication terminal; (b) checking a threshold capacity of a Frequency Assignment (FA) attempting an initial connection; (c) checking the appropriate dose of the FA; (d) allocating resources to the FA in step (c) and then providing the data service; (e) sequentially checking the titer of other FAs in the same sub-cell if the titer of FA is exceeded in step (c); (f) allocating resources to the FA within the appropriate capacity and providing the data service if an FA within the appropriate capacity is detected in the same sub-cell in step (e); (g) In step (e), when all FAs in the same sub-cell have exceeded the appropriate capacity, all resources in the same sub-cell have been allocated the resources with the lowest capacity FA before the threshold capacity and then the data service is allocated. Providing; And (h) in step (g), transitioning the data service to the CDMA 2000 1X system or the WCDMA system or rejecting call signal establishment when all FAs in the same sub-cell have exceeded a threshold capacity. It provides a call channel allocation method in a 1x EV-DO system having a multi-FA characterized in that it comprises a step.

According to the present invention, it is possible to prevent the deterioration of the service quality of the subscriber who is receiving the service when a large number of mobile communication terminals are continuously connected to receive the multimedia service, and also from the mobile terminal to the 1x EV-DO system. In case of call connection, user re-establishes call connection many times because FA of 1x EV-DO system is in service state or 1x EV-DO system fails and provides service by transitioning to 1X system or WCDMA system. There is an effect that you can receive immediate service without trying.

Description

Method for allocating a call channel in a 1GHz EV-DO system with multi-fae {Method for Call-Assignment for 1x EV-DO System Having Multi FA}

The present invention relates to a call channel allocation method in a 1x EV-DO system having multiple FAs. More specifically, when data service requests are increased in the 1x EV-DO system, the capacity is evenly distributed by distributing the capacity between FAs within the capacity range, and when the capacity of the 1x EV-DO system becomes insufficient, The present invention relates to a call channel allocation method in a 1x EV-DO system having a multi-FA that provides data service through a CDMA 2000 1X system having a capacity.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System), the second generation Cellular (Cellurar) / Personal Communication Service (PCS), and the third generation high speed data. International mobile telecomunication-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 EV-DO service. The CDMA 2000 1X service uses the IS-95C network, which has evolved from the existing IS-95A and IS-95B networks. Internet-enabled service. Accordingly, the CDMA 2000 1X service enables the improvement of existing voice and WAP (Wireless Application Protocol) service quality as well as the provision of various multimedia services (AOD, VOD, etc.).

Meanwhile, the IMT-2000 system for the multimedia mobile communication service has defined the standard of the synchronous IMT-2000 system in the 3rd Generation Partnership Projects2 (3GPP2), an international standardization organization. The method based on High Data Rate (HDR) was named "CDMA 2000 1x Evolution Data Optimized (EV-DO)" and was confirmed as an international standard. CDMA 2000 1x EV-DO (hereinafter, referred to as '1x EV-DO') is a communication standard of CDMA 2000 1X (hereinafter, referred to as '1X'). to be.

1X provides a unidirectional high speed data service with a transmission rate of up to 307.2 Kbps in the form of a mixture of a circuit network and a packet network. On the other hand, 1x EV-DO provides bidirectional high-speed data service with a transmission rate of up to 2.4 Mbps for packet networks only.

Hereinafter, for convenience of description, the CDMA 2000 1X system will be abbreviated as "1X system" and the CDMA 2000 1x EV-DO system as "1x EV-DO system".

1 is a block diagram schematically illustrating a configuration of a general 1x EV-DO system.

The configuration of a general 1x EV-DO system is a hybrid terminal (HAT: Hybrid Access Terminal, hereinafter referred to as 'HAT') 100, access network (AN: Access Network, referred to as 'AN') (110), mobile communication Switching station 116, Public Switched Telephone Network (PSTN) 118, Packet Data Serving Node (PDSN) 124, Home Agent (HA: hereinafter referred to as 'HA') 126, Router 128, Authentication Server (AAA: Authentication Authorization Accounting, hereinafter referred to as 'AAA') 130, Internet 132, Access A network authentication server (AN-AAA: Access Network-Authorization Authentication Accounting, hereinafter referred to as 'AN-AAA') (134) and DLR (Data Location Register) (136) and the like.

Current 1x EV-DO systems are used interchangeably with existing 1X systems. That is, in one AN, the 1x EV-DO system and the 1X system are mixed and configured in hardware, and operations are performed separately. In other words, the AN includes a channel card and a channel board for the 1x EV-DO system and a channel card and a channel board for the 1x system, respectively.

Accordingly, the AN 110 includes the BTS 112 and the BSC 114 of the 1X system, and in addition, an 1x EV-DO transmitter for an 1X EV-DO system (ANTS: Access Network Transceiver Subsystem, hereinafter referred to as 'ANTS'). 120) and 1x EV-DO controller (ANC: Access Network Controller, hereinafter referred to as 'ANC') (122). Accordingly, when data is transmitted to the HAT 100, the data is transmitted through the 1x EV-DO system, and when the voice is transmitted, the data is transmitted through the 1x system.

The HAT 100 is a terminal for a 1x EV-DO data service, and receives a voice service through a 1X system, and has a hardware-separated configuration so that a high-speed data service can be provided through a 1x EV-DO system. . The HAT 100 is switched to the 1X mode to communicate through the 1X system in the standby state.The HAT 100 switches to the 1x EV-DO mode at regular intervals and checks whether the call is received by the 1x EV-DO system. Perform the operation to return to the mode.

When the HAT 100 receives data through the 1x EV-DO system in the 1x EV-DO mode, the HAT 100 receives data from the AN 110 to the HAT 100 in consideration of this point because the amount of the received data is very large. In the case of forward transmission, the channels divided by the code division multiple access (CDMA) scheme are transmitted through a time slot divided into time division multiplexing (TDM), and the ANTS from the HAT 100 is transmitted. In case of reverse transmission to the 120 and the ANC 122, the existing CDMA scheme is used as it is to accommodate a large number of users.

In addition, the HAT 100 switches to the 1x mode at regular intervals and checks whether there is an incoming call of a voice signal using the 1x system while receiving data in the traffic state of the 1x EV-DO mode. The operation of returning to the EV-DO mode is repeatedly performed.

The BTS 112 provides a mobile communication service including voice and data to the HAT 100 through an air interface. In addition, the BTS 112 performs location registration to determine the location of the HAT 100 existing in the cell area under its control. The BTS 112 may obtain information such as latitude and longitude at which the BTS 112 is located from the Global Positioning System (GPS), and the position information of the BTS 112 may be converted into a HAT (system parameter message) through a system parameter message of the forward link call channel. 100). The HAT 100 may register the new location information by calculating the moving distance of the HAT 100 itself using the location information of the BTS 112 of the cell to which the HAT 100 belongs.

The BSC 114 performs various functions required for radio call processing such as handoff while controlling and managing the BTS 112. That is, the BSC 114 for controlling voice or data transmission transmits the voice signal transmitted from the BTS 112 to the mobile communication switching center 116, and the data signal transmitted from the BTS 112 is transmitted to the PDSN 124. do.

Mobile communication switching center 116 physically connects multiple BSCs 114 to another mobile communication switching center or PSTN 118 to provide a connection path for voice calls for communication calls from HAT 100.

In addition, the mobile communication switching center 116 stores a Home Location Register (HLR), which is a database that stores information of the HAT 100 registered therein, and information of the HAT 100 within its own area. It obtains profile information of the HAT 100 from a visitor location register (VLR), which is a database storing the user's call. Here, the profile information stores a mobile identification number (MIN), an electrical serial number (ESN), and information on subscribed additional services of the HAT 100.

The PSTN 118 is a landline public telephone network provided by a general landline telecommunications operator. The PSTN 118 connects a telephone line to a telephone exchange facility to make a call between the HAT 100 and a landline, between the HAT 100 and an AT, and between landlines. The net is configured to be.

The ANTS 120 serves to transmit only packet data to the HAT 100, and the ANC 122 serves to transmit data between the ANTS 120 and the PDSN 124. The ANC 122 is also connected to the AN-AAA 134 and the DLR 136.

Since the PDSN 124 and the HA 126 track and manage the location of the HAT 100 by exchanging a fixed IP address and a temporary IP address of the HAT 100, the HAT 100 is always on the go regardless of the location. Data service is available. Router 128 is only used for connection with the Internet 132.

AAA (130) is a function of verifying the status of the bandwidth, service, etc. of the HAT 100 to authenticate, the function of encrypting the data using an encryption key (Key) to transmit and receive data through the Internet 132, encryption level A level management function and a data collection function for billing and settlement of the HAT 100 are performed.

The AN-AAA 134 authenticates the HAT 100 to use the data service through the AN 110 and performs a function of authorizing the service. Accordingly, the AN-AAA 134 stores service status information such as MIN, ESN, and service request, termination, origination / use, and the like of the HAT 100.

Here, the AN-AAA 134 authenticates the HAT 100 accessing the AN 110 using a standardized Challenge Handshake Authentication Protocol (CHAP). Here, the Challenge Handshake Authentication Protocol is one of the authentication protocols for the Point-to-Point Protocol (PPP) used for dial-up Internet Protocol (IP) connection. Refers to a technology for authenticating the HAT 100 by encrypting and transmitting a password.

The DLR 136 allocates a unicast access terminal identifier (UATI) to the HAT 100 and manages location information of the HAT 100. Here, UATI is an access terminal identifier for identifying the HAT 100 on the air standardized by 3GPP2, and is newly generated every time the DLR 136 moves. That is, over the air, UATI is used as an access terminal identifier, and MIN or IMSI (International Mobile Station Identity) is used as an access terminal identifier in a wired network. IMSI is a number that includes a country code (MCC), a country code (MNC) and a MIN.

Once the HAT 100 is authenticated by the AN-AAA 134 and the UATI is assigned by the DLR 136, the data with the Internet 132 through the PDSN 124 in the same manner as the data communication in the 1X system. The service is done.

That is, as described above, the data transmission speed of the 1X EV-DO system is generally 2.4 Mbps in the forward direction and 153.6 Kbps in the reverse direction, thereby enabling bidirectional high speed data transmission. Accordingly, a large data packet transmission is possible, and a mobile communication service using a large data packet transmission, for example, a multimedia service such as a video call or a video on demand (VOD) is also possible. However, there is a problem as described below in the process of using a mobile communication service through the 1x EV-DO system.

When the multimedia data is to be transmitted from the 1x EV-DO system using the HAT 100, the call connection is performed to the 1x EV-DO system. In this case, in the 1x EV-DO system, a plurality of channels, such as a pilot channel, a traffic channel, and an access channel, may be allocated to the HAT 100 requesting a call connection through frequency assignment (frequency allocation, hereinafter referred to as 'FA'). Will be set.

However, as the number of 1x EV-DO service subscribers increases, even if additional FAs are added in the 1x EV-DO system, when a mobile communication service request exceeding the FA's service capacity occurs, a new call through the 1x EV-DO system occurs. Not only is it impossible to process, but there is a problem that the service quality of the mobile subscriber that is being served is also deteriorated due to the load on the 1X EV-DO system. That is, in the case of a video call or a VOD service that requires a smooth data transmission in real time, there is a problem in that voice and video are not matched or video is delayed and transmitted.

So far, there have been attempts to provide a service by transitioning to a 1X system as a method for solving the above-mentioned problems, but the conventional solution does not assume a case having a large number of FAs, but a 1x EV-DO system in which one FA is constructed. Only optimized for. Therefore, in the 1x EV-DO system having multiple FAs, there is a limit in solving the problem with the aforementioned method.

In order to solve the above problems, the present invention, in the 1x EV-DO system having a multi-FA, calculates and sets the appropriate capacity and the threshold capacity of the jurisdiction that provides the mobile communication service 1x EV in a specific base station or a specific area If the data service demand through the DO system increases, the HAT provides the service from the FA requesting the service within the appropriate capacity with sufficient capacity for data service connectivity, and the appropriate capacity of the FA requesting the service If exceeded, other FAs with the lowest usage capacity will be serviced until the critical capacity is reached.

In addition, a data service request requested at a time point exceeding the threshold capacity of all FAs included in the 1x EV-DO system is transferred to a 1x system or a WCDMA system to provide a call channel allocation method in a 1x EV-DO system that provides data service. will be.

Accordingly, according to a first object of the present invention, a multi-FA that provides a data service requested by a 1x evolution data optimized (EV-DO) system to a CDMA 2000 1X system or a wide-band code division multiple access (WCDMA) system is provided. A method of allocating a call channel in a 1x EV-DO system comprising: (a) receiving a request for the data service from a mobile communication terminal; (b) checking a threshold capacity of a Frequency Assignment (FA) attempting an initial connection; (c) checking the appropriate dose of the FA; (d) allocating resources to the FA in step (c) and then providing the data service; (e) sequentially checking the titer of other FAs in the same sub-cell if the titer of FA is exceeded in step (c); (f) allocating resources to the FA within the appropriate capacity and providing the data service if an FA within the appropriate capacity is detected in the same sub-cell in step (e); (g) In step (e), when all FAs in the same sub-cell have exceeded the appropriate capacity, all resources in the same sub-cell have been allocated the resources with the lowest capacity FA before the threshold capacity and then the data service is allocated. Providing; And (h) in step (g), transitioning the data service to the CDMA 2000 1X system or the WCDMA system or rejecting call signal establishment when all FAs in the same sub-cell have exceeded a threshold capacity. It provides a call channel allocation method in a 1x EV-DO system having a multi-FA characterized in that it comprises a step.

In addition, according to a second object of the present invention, a 1x EV having a multi-FA which provides a data service requested by the 1x EV-DO system by transitioning to a CDMA 2000 1X system or a wide-band code division multiple access (WCDMA) system. A call channel allocation method in a DO system, comprising: (a) receiving a request for the data service from a mobile communication terminal; (b) checking the threshold dose and titration dose of all FAs; (c) if there is an idle FA according to the result of step (b), providing the data service to the FA; And (e) transitioning the data service to the CDMA 2000 1X system or to the WCDMA system when the data capacity is not available because the threshold capacity of all FAs is exceeded as a result of step (b). A call channel allocation method in a 1x EV-DO system having multiple FAs is provided.

Hereinafter, exemplary 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 may obscure the gist of the present invention, the detailed description thereof will be omitted.

In a 1x EV-DO system having multiple FAs, two call channel allocation methods can be implemented. Here, the call channel assignment is handled by the channel card and the channel board of the 1X system, the 1x EV-DO system, and the WCDMA system provided in the ANTS 120.

2 is a flowchart illustrating a call setup process in the 1X EV-DO system according to the first embodiment of the present invention.

When the user generates a call signal for requesting a multimedia service through the HAT 100, the generated call signal is transmitted to the 1X EV-DO system (S200).

The ANTS 120 monitors whether the channel state of the FA receiving the call signal from the HAT 100 is in an idle mode or a service mode (S202). The ANTS 120 transmits a Quick Config Message on a sub-cell basis to monitor whether the channel state of the FA is in an idle mode or a service mode. Here, the configuration message means a protocol included in the connection layer controlling the connection of the wireless section, and includes a threshold capacity exceeding parameter and an appropriate capacity exceeding parameter.

Appropriate capacity that can be serviced in FA is the theoretical capacity of ANTS 120 that provides 1x EV-DO service in the wireless section, the capacity calculated through actual field measurement, and the packet data service provided through ANTS 120. It is set in consideration of the capacity of the ANTS 120 according to the type. That is, the appropriate capacity that can be serviced by the FA is ANTS assuming that the subscribers using the packet data service provided by the EV-DO system are distributed in a predetermined area divided into a good reception area, a reception normal area, and a bad reception area. Reference numeral 120 denotes a capacity of a bandwidth of an access point (AP) (not shown) that provides a packet data service to all subscribers in a service jurisdiction without deteriorating service quality. When the proper capacity of the ANTS 120 is exceeded, it is set to a value other than NULL or a value other than the NULL value indicating that the proper capacity has been exceeded in the appropriate capacity exceeding parameter.

In addition, the critical capacity that can be serviced by the FA means that all subscribers using the packet data service provided by the 1x EV-DO system are located in a good reception area so that the subscribers can use the packet data service without any complaints about the service. Refers to the capacity of the bandwidth provided by 120, the determination of the threshold capacity depends on the value set by the operator. In general, the determination of the threshold capacity is set in consideration of the bandwidth providing maximum capacity of the ANTS 120 available to the AP. In general, the threshold capacity is set to 70% of the maximum capacity provided in the wireless section of the ANTS (120). Accordingly, if the maximum capacity provided in the radio section of the ANTS 120 exceeds 70%, the threshold capacity exceeded parameter is set to a value other than NULL or a value other than NULL.

The ANTS 120 determines whether the service is available for the FA currently attempting to connect with the HAT 100 by referring to the threshold capacity parameter among the configuration messages transmitted from the FA (S204). For example, an FA that receives a threshold capacity exceeding parameter set to NULL from ANTS 120 exceeds the threshold capacity and if a service cannot be provided, a threshold capacity exceeding a value other than NULL, for example, '1' is exceeded. The parameter is sent to the ANTS 120.

In step S204, the ANTS 120 checks the threshold capacity parameter, and if it is a NULL value, determines that the service is available to the corresponding sub-cell, and refers to the appropriate capacity excess parameter (S206). If it is checked in step S206 that the appropriate excess capacity parameter is set to NULL, a plurality of channels such as a pilot channel, a traffic channel, an access channel, etc. are allocated to the HAT 100 through the corresponding FA and data services are provided (S208). .

On the other hand, when the ANTS 120 determines that the service is not available to the FA with reference to the threshold capacity exceeding parameter in step S204, the threshold capacity of the other FA included in the ANTS 120 is checked (S210). The process of checking the threshold capacity of the other FA is determined by the ANTS 120 with reference to the threshold capacity exceeding parameter as in step S204 (S212). If it is determined that the service is available in another FA other than the FA that attempted to access the call, the FA of the sub-cell having the service margin is selected among all the FAs existing in the coverage (S220), and the ANTS 120 uses the corresponding FA. The HAT 100 allocates a plurality of channels such as a pilot channel, a traffic channel, an access channel, and provides a data service (S208).

If it is determined in step S212 that the service cannot be provided to the HAT 100 through the 1X EV-DO system, the ATNS 120 sets up a call to provide the service to the HAT 100 through the 1x system or the WCDMA system. In step S214, the call is rejected or the call is rejected (S214). That is, if the call setup change is necessary because the threshold capacity of all FAs is exceeded, the ANTS 120 transmits a call setup change parameter to the HAT 100, and the HAT 100 transitions the call setup to the 1X system or the WCDMA system. do. In this case, when the HAT 100 supports the asynchronous WCDMA system, the call signal may also transition to the WCDMA system.

In this case, the switching to the 1X mode or the WCDMA mode is performed by the searcher module tracking and switching the frequency used by the searcher module in the 1X system or the WCDMA system under the control of the mobile station modem (MSM) chip included in the HAT 100. .

In addition, in step S206, when the FA has a margin in the critical capacity but exceeds the proper capacity, the appropriate capacity of all FAs present in the sub-cell to which the FA receives the call signal belongs is checked (S216).

The process of checking the appropriate capacity of all FAs in the sub-cell to which the FA belongs is checked with reference to the appropriate capacity over-parameter as in step S204 (S218). In operation S222, a plurality of channels such as a pilot channel, a traffic channel, and an access channel are allocated to the HAT 100 through the corresponding FA, and data services are provided (S208).

On the other hand, if it is set to a value other than the NULL value with reference to the appropriate capacity excess parameter in step S218, it is checked whether there is a serviceable FA within the proper capacity (S220).

In step S220, if a FA within an appropriate capacity exists, a plurality of channels such as a pilot channel, a traffic channel, and an access channel are allocated to the HAT 100 through the corresponding FA and data services are provided (S208). If not, a plurality of channels such as a pilot channel, a traffic channel, and an access channel are allocated to the HAT 100 through the FA having the least capacity until all FAs reach the threshold capacity.

The above-described method checks the critical capacity and the appropriate capacity for the FA attempting initial access, and detects FAs that can be serviced sequentially according to the checked result, so that the capacity is evenly distributed between the HAT 100 and the AN 110. Distribution and prevents a decrease in service quality of existing subscribers due to excessive subscriber growth.

3 is a flowchart illustrating a call setup process in a 1X EV-DO system according to a second embodiment of the present invention.

The difference between the first preferred embodiment of the present invention shown in FIG. 2 and the second preferred embodiment of the present invention shown in FIG. 3 is as follows. In the case of the first preferred embodiment of the present invention, it is determined whether or not the service is available for the FA that receives the call signal from the HAT 100, and if the service is not available, other FAs that can be serviced are sequentially detected. In other words, if nine FAs are set in the 1x EV-DO system, the first FA received the call signal from the HAT 100 is checked for the proper capacity and the critical capacity of the first FA. When the service is provided and the standard is exceeded, the proper capacity and threshold capacity of the second to ninth FAs are sequentially checked in order to detect a FA that can be serviced within the standard.

On the other hand, in the second preferred embodiment of the present invention, the ANTS 120 detects the state of the entire FA by detecting the state of the entire FA at the moment when the call signal is received from the HAT 100, and the FA of the idle state does not exist. If not, the call signal transitions to a 1X system or a WCDMA system.

When the user generates a call signal for requesting a multimedia service through the HAT 100, the generated call signal is transmitted to the ANTS 120 (S300).

The ANTS 120 of the 1x EV-DO system transmits a configuration message (Quick Config Message) to each other in units of sub-cells to monitor the channel state for the entire FA (S302).

The ANTS 120 determines whether service is available to all FAs of the ANTS 120 with reference to the threshold overcapacity parameter and the appropriate overcapacity parameter (S404). For example, an FA that has received the critical over-capacity parameter and the appropriate over-capacity parameter set to NULL in the ANTS 120 exceeds the serviceable capacity of 70%, and a value other than NULL, for example, becomes unavailable. The threshold overcapacity parameter and the appropriate overcapacity parameter set to '1' are transmitted to the ANTS 120.

When the ANTS 120 detects an idle FA by referring to the threshold over-capacity parameter and the appropriate over-capacity parameter, the pilot channel, traffic channel, or access channel for providing data service to the HAT 100 through the idle FA. And a plurality of channels are allocated (S306).

When the critical capacity exceeding parameter and the appropriate capacity exceeding parameter set to '1' are transmitted from all FAs in step S304, the ANTS 120 determines that the service cannot be provided through the 1X EV-DO system. The ANTS 120 transitions the call setup to provide the service to the HAT 100 through the idle 1x system or the WCDMA system (S308).

In the above-described method, when a call signal for requesting a data service is transmitted from the HAT 100, the ANTS 120 detects the state of all FAs and provides data service through an idle FA, or an idle 1X system or Since the call signal transitions to the WCDMA system, it is an advantage that the resources of the ANTS 120 can be efficiently utilized.

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, according to the present invention, when a large number of mobile communication terminals continuously access to receive a multimedia service, it is possible to prevent a deterioration in the service quality of a subscriber who is receiving a service, and also 1x in the mobile communication terminal. When a call connection is made to the EV-DO system, even if all FAs of the 1x EV-DO system are in service state or the 1x EV-DO system fails, the user is transferred to the 1X system or the WCDMA system to provide the service. It is effective to receive immediate service without retrying number access.

In addition, even if the number of 1x EV-DO service subscribers increases, the service quality of the existing subscribers does not occur, and since the call connection is performed by switching to the 1X system and the WCDMA system, there is an advantage that the cost of FA expansion can be reduced. .

1 is a block diagram schematically showing the configuration of a general 1x EV-DO system;

2 is a flowchart illustrating a call setup process in a 1X EV-DO system according to a first embodiment of the present invention;

3 is a flowchart illustrating a call setup process in a 1X EV-DO system according to a second embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: hybrid terminal 110: access network

112: BTS 114: BSC

116: mobile telecommunication switching center 118: public switched telephone network

120: ANTS 122: ANC

124: packet data serving node 126: HA

128: router 130: authentication server

132: Internet 134: access network authentication server

136: DLR

Claims (26)

Calls in 1x EV-DO systems with multiple FAs that provide data services requested by 1x Evolution Data Optimized (EV-DO) systems to CDMA 2000 1X systems or Wide-band Code Division Multiple Access (WCDMA) systems As a channel assignment method, (a) receiving the data service request from a mobile communication terminal; (b) checking a threshold capacity of a Frequency Assignment (FA) attempting an initial connection; (c) checking the appropriate dose of the FA; (d) allocating resources to the FA in step (c) and then providing the data service; (e) sequentially checking the titer of other FAs in the same sub-cell if the titer of FA is exceeded in step (c); (f) allocating resources to the FA within the appropriate capacity and providing the data service if an FA within the appropriate capacity is detected in the same sub-cell in step (e); (g) In step (e), when all FAs in the same sub-cell have exceeded the appropriate capacity, all resources in the same sub-cell have been allocated the resources with the lowest capacity FA before the threshold capacity and then the data service is allocated. Providing; And (h) transitioning the data service or rejecting call signal establishment to the CDMA 2000 1X system or the WCDMA system when all FAs in the same sub-cell in step (g) exceed a threshold capacity; Call channel allocation method in a 1x EV-DO system having a multi-FA, comprising a. The method of claim 1, wherein the EV-DO system, A hybrid access terminal (HAT) for receiving a voice service through the CDMA 2000 1X system or the WCDMA system and for providing a high speed data service through the EV-DO system; It includes a base transceiver station (BTS) and a base station controller (BSC) for delivering voice to the HAT, and includes an access network transceiver subsystem (ANTS) and an access network controller (ANC) for transmitting packet data to the HAT. An access network (AN); A Public Switched Telephone Network (PSTN) for connecting a telephone line to a telephone exchange facility to allow the HAT to talk to a landline or another HAT; A mobile communication switching center coupled with the PSTN to provide a connection path for a voice call to a communication call from the HAT; An internet providing data to the HAT; A router for connection with the Internet; Authentication Authorization Accounting (AAA) for authenticating the HAT, encrypting data, and collecting data required for billing and settlement of the HAT; HA (Home Agent) for managing the location tracking of the HAT; A Packet Data Serving Node (PDSN) for tracking and managing the location of the HAT together with the HA; AN-AAA (Access Network-Authorization Authentication Accounting) for authenticating the HAT and authorizing a service; And A Data Location Register (DLR) that allocates a unicast access terminal identifier (UATI) to the HAT and manages location information of the HAT. Call channel allocation method in a 1x EV-DO system having a multi-FA, comprising a. The method of claim 2, The HAT is a CDMA 2000 1X mode for receiving a voice signal transmission service or a low speed data transmission service in cooperation with the CDMA 2000 1x system, or a 1x EV- for receiving a high speed data transmission service in connection with the 1x EV-DO system. A call channel allocation method in a 1x EV-DO system having multiple FAs, characterized by operating in a DO mode. The method of claim 2, When the HAT receives call setup switching parameters from the 1x EV-DO system, the HAT switches the call setup to an idle mode CDMA 2000 1x system or a WCDMA system. Call channel allocation method. The method of claim 2, The HAT uses a time division multiple access scheme in the forward link for receiving data and a code division multiple access scheme in the reverse link, and assigns a call channel in a 1x EV-DO system having multiple FAs. Way. The method of claim 2, Switching to the CDMA 2000 1X mode or the WCDMA mode of the HAT is characterized in that the searcher module tracks and switches the frequency used by the searcher module in the CDMA 2000 1X system or the WCDMA system under the control of a mobile station modem (MSM) chip. A call channel allocation method in a 1x EV-DO system having a multi-FA. The method of claim 2, When the HAT supports the asynchronous WCDMA system in addition to the synchronous CDMA 2000 1X system and the 1x EV-DO system, the HAT transitions the data service to the WCDMA system. Call channel allocation method in DO system. The method of claim 1, The EV-DO system transmits data at a speed of 2.4 Mbps in a forward direction and transmits data at 153.6 Kbps in a reverse direction. The method of claim 1, And the EV-DO system has one or more FAs. The method of claim 1, wherein the EV-DO system has multiple FAs. The method of claim 1, 1x EV-DO system having a multi-FA, characterized in that the determination of the threshold capacity and the appropriate capacity of the FA is determined by mutually transmitting a Quick Config Message in the unit of a sub-cell (Sub-Cell) Call Channel Allocation Method in. The method of claim 10, The configuration message includes a threshold over-capacity parameter and an appropriate over-capacity parameter, and are set to NULL as an initial value. The call channel allocation method of 1x EV-DO system having a multi-FA. The method of claim 1, wherein in step (b) When the FA is in the idle mode, the threshold over-capacity parameter and the appropriate over-capacity parameter are set to NULL and transmitted to the 1x EV-DO system. When the data service is not available, the threshold is set to a value other than NULL. The method of allocating a call channel in a 1x EV-DO system having a multi-FA, characterized in that for transmitting the over-capacity parameter and the appropriate over-capacity parameter to the 1x EV-DO system. The method of claim 1, ANTS of the EV-DO system monitors the critical capacity and the appropriate capacity of the FA, and checks the FA of the idle mode and the service mode, call channel allocation method in a 1x EV-DO system having a multi-FA . The method of claim 1, wherein in step (h), The 1x EV-DO system generates a call setup change parameter and transmits it to the mobile communication terminal when the call setup change is necessary because the threshold capacity of all FAs is exceeded, and the mobile communication terminal transmits the CDMA 2000 1X system or the WCDMA system. A call channel allocation method in a 1x EV-DO system having multiple FAs, wherein the call setup is shifted. The method of claim 1, wherein in step (h), Switching from the 1x EV-DO mode to the CDMA 2000 1X mode or the WCDMA mode is performed by a searcher module controlled by a mobile station modem (MSM) chip provided in the mobile communication terminal. A method for allocating a call channel in a 1x EV-DO system having a multi-FA, characterized by tracking and switching a frequency used in the system. A call channel allocation method in a 1x EV-DO system having a multi-FA which provides a data service requested by the 1x EV-DO system to a CDMA 2000 1X system or a wide-band code division multiple access (WCDMA) system. (a) receiving the data service request from a mobile communication terminal; (b) checking the threshold dose and titration dose of all FAs; (c) if there is an idle FA according to the result of step (b), providing the data service to the FA; And (e) transitioning the data service to the CDMA 2000 1X system or the WCDMA system when the data capacity cannot be provided because the threshold capacity of all FAs is exceeded according to the result of step (b). Call channel allocation method in a 1x EV-DO system having a multi-FA, comprising a. The method of claim 16, wherein the EV-DO system, A HAT for receiving voice service through the CDMA 2000 1X system and for providing high speed data service through the EV-DO system; An AN including a BTS and a BSC for delivering voice to the HAT, and an ANTS and an ANC for transmitting packet data to the HAT; A PSTN for connecting a telephone line to a telephone exchange facility to allow the HAT to talk to a landline or another HAT; A mobile communication switching center coupled with the PSTN to provide a connection path for a voice call to a communication call from the HAT; An internet providing data to the HAT; A router for connection with the Internet; An AAA for authenticating the HAT, encrypting data, and collecting data required for billing and settlement of the HAT; HA for managing location tracking of the HAT; PDSN for tracking and managing the location of the HAT in addition to the HA; AN-AAA for authenticating the HAT and authorizing a service; And DLR which assigns UATI to the HAT and manages location information of the HAT Call channel allocation method in a 1x EV-DO system having a multi-FA, comprising a. The method of claim 17, The HAT is a CDMA 2000 1X mode for receiving a voice signal transmission service or a low speed data transmission service in cooperation with the CDMA 2000 1x system, or a 1x EV- for receiving a high speed data transmission service in connection with the 1x EV-DO system. A call channel allocation method in a 1x EV-DO system having multiple FAs, characterized by operating in a DO mode. The method of claim 17, When the HAT receives call setup switching parameters from the 1x EV-DO system, the HAT switches the call setup to an idle mode CDMA 2000 1x system or a WCDMA system. Call channel allocation method. The method of claim 17, The HAT uses a time division multiple access scheme in the forward link for receiving data and a code division multiple access scheme in the reverse link, and assigns a call channel in a 1x EV-DO system having multiple FAs. Way. The method of claim 17, Switching to the CDMA 2000 1X mode or the WCDMA mode of the HAT is performed by the control of the MSM chip, and the switch module tracks and switches the frequency used in the CDMA 2000 1X system or the WCDMA system. Call Channel Allocation Method in EV-DO System. The method of claim 17, And the EV-DO system has one or more FAs. The method of claim 1, wherein the EV-DO system has multiple FAs. The method of claim 16, wherein step (b) A method for allocating a call channel in a 1x EV-DO system having multiple FAs, characterized by detecting an idle mode or a service mode by generating a threshold over-capacity parameter and an appropriate over-capacity parameter and transmitting them to all the FAs. The method of claim 16, wherein in step (b) The FA in idle mode sends the critical over capacity parameter and the appropriate over capacity parameter set to NULL to the 1x EV-DO system, and the FA in service mode is the threshold over capacity parameter and the appropriate capacity set to a value other than NULL. Call channel allocation method in a 1x EV-DO system with a multi-FA, characterized in that for transmitting the excess parameter to the 1x EV-DO system. The method of claim 16, wherein in step (e), In the 1x EV-DO system having a multi-FA, the 1x EV-DO system generates a call setup change parameter and transmits the call setup change parameter to the mobile communication terminal when the call setup change is necessary due to the exceeding of the threshold capacity and the proper capacity. Call channel allocation method. The method of claim 16, wherein in step (e), Switching from the 1x EV-DO mode to the CDMA 1X mode or the WCDMA mode is performed by a searcher module in the 1X system or the WCDMA system under the control of a mobile station modem (MSM) chip provided in the mobile communication terminal. A method for allocating a call channel in a 1x EV-DO system having a multi-FA, characterized by tracking and switching a frequency used.