KR100745166B1 - Common access point system for wireless broadband service hot-spot, and method operation thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a public access point (AP) system for a hot-spot for portable Internet service and a method of operating the same. By installing a portable Internet small common base station supporting two service providers in the Hot-Spot area and operating them for common use by two operators, high quality services can be provided at low cost.

The public access point (AP) system for a portable Internet service hot spot according to the present invention for this purpose, the portable terminal; A base station apparatus for transmitting and receiving signals with the portable terminal, comprising: a common access point (AP) commonly used by a plurality of operators in a region; And a plurality of access control routers (ACRs) connected to the common access point (AP) to perform functions including an IP router and a handover to provide wireless Internet access and network connection services to the portable terminal, respectively.

Portable Internet, Access Point (AP), Access Control Router (ACR), Terminal, Network

Description

COMMON ACCESS POINT SYSTEM FOR WIRELESS BROADBAND SERVICE HOT-SPOT, AND METHOD OPERATION THEREOF}

1 is a network diagram of a portable Internet service system according to the prior art

2 is a network diagram for explaining the operation of the mobile Internet service system according to the prior art;

3 is a diagram illustrating a network configuration of a common access point system for a portable Internet service hot-spot according to a preferred embodiment of the present invention.

4 is a functional block diagram of the public AP 200 shown in FIG.

FIG. 5A is a block diagram of the first baseband subsystem (BBS) unit 210 shown in FIG. 4.

FIG. 5B is a block diagram of the second baseband subsystem (BBS) unit 220 shown in FIG. 4.

6 is a configuration diagram of a radio frequency subsystem (RFS) unit 230 shown in FIG.

<Description of Major Symbols in Drawing>

10: Portable Subscribe Station (PSS)

30a: Access Control Router (ACR) of the first provider

30b: access control router (ACR) of the second provider

200: public access point (access point: AP)

210: first base band subsystem (BBS) unit

220: second baseband subsystem (BBS) unit

230: Radio Frequency Subsystem (RFS) unit

231: first multiplexer (Multiplex: MUX)

232: first low frequency bandpass filter

233: first mixer

234: Voltage Compensation Amplifier

235: first high frequency bandpass filter

236: output power adjustment circuit

237 Power Amp (P / A)

238: RF Switch

239 low noise amplifier

240: second high frequency bandpass filter

241: second mixer

242: second low frequency bandpass filter

243 gain amplifier

244: second multiplexer (MUX)

245: PLL circuit

246: high frequency band pass filter and matching unit

310, 410: main control subsystem (RPRS) unit

311, 411: Processor Module

312, 412: Clock generator

313, 413: Switching part

314, 414: network interface section

320, 420: radio channel subsystem (RBBS)

321, 421: CAM

322, 422: modem and MAC

323, 423: base band (B / B) part

324, 424: Digital / Analog (D / A) Converter

325, 425: band pass filter (BPF)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a public access point (AP) system for a wireless broadband (WiBro) service hot-spot and a method of operating the same. In particular, a subway underground section in which a lot of traffic occurs In order to provide high quality service at low cost by installing a small internet base station supporting mobile service providers in the hot-spot area of building, history, etc. The present invention relates to a public access point (AP) system for a portable Internet service hot-spot and a method of operating the same.

1 is a network diagram of a portable Internet service system according to the prior art.

Conventional portable Internet service systems implement orthogonal frequency division multiplexing (OFDM) and time division duplex (TDD) in order to maximize frequency utilization in a certain frequency band (eg, 2.3 GHz). As shown in FIG. 1, a conventional portable Internet service system for providing a wireless Internet service includes a portable subscriber station (PSS) 10 capable of wireless internet access, and the portable terminal (PSS) 10. An access point (AP) 20, which is a base station supporting wireless access and network connection, and an access control router connected to the access point 20 to perform an IP routing function. ACR 30 and a private / public IP network 40 connected to the access control router (ACR) 30 to provide an Internet connection service.

In the conventional portable Internet service system configured as shown in FIG. 1, each service provider independently connects an access control router (ACR) 30 to form a unique network.

2 is a network diagram for explaining the operation of the portable Internet service system according to the prior art.

As shown in FIG. 2, the first and second operators respectively install and operate their own large base stations in order to service the mobile Internet function in the region A and the region B. FIG.

That is, the first operator installs an access point (AP) 20a in the A area (A) and the B area (B), respectively, and connects with the access point (AP) 20a to support an Internet access service. A router (ACR) 30a is provided to support wireless connection and network connection of the mobile terminal (PSS) 10. In addition, the second service provider also has an access point (AP) 20b installed in area A and area B and connects with the access point 20b in the same manner as the first service provider. An access control router (ACR) 30b supporting a service is provided to support a wireless connection and a network connection of the mobile terminal (PSS) 10.

Here, the access point (AP) 20a, 20b is located between the mobile terminal (PSS) 10 and the access control router (ACR) 30a, 30b, and is separated from the mobile terminal (PSS) 10. The wireless signal is transmitted to the access control router (ACR) 30a and 30b by wire, and conversely, the signal from the access control router (ACR) 30a and 30b to the wire is transmitted to the portable terminal (PSS) ( 10) to transmit wirelessly. The access point (AP) (20a) (20b) is the RF stage for radio transmission, modulation and demodulation function, packet scheduling, packet retransmission and call processing, radio band management, ranging function, handoff support, downlink multicasting function and It performs quality of service (QOS) function and plays the same role as base station of mobile communication.

In addition, the access control router (ACR) (30a) (30b) is connected to a plurality of access point (AP) and IP-based protocol, handover function, subscriber to ensure the mobility of the mobile terminal (PSS) (10) Authentication and security for identification and service, IP multicasting, quality of service (QOS) service provision, mobility control between access points (APs) in an access control router (ACR), collecting and transmitting billing data, It performs the function of collecting and transmitting routing function and other operation maintenance related information for sending to the destination.

In order to provide these functions, each operator must configure a unique access point (AP) for each region as shown in FIGS. 1 and 2.

However, in the conventional portable Internet service system configured as described above, since each service provider providing the portable Internet service function must configure its own access point (AP) for each region, the installation cost of the access point (AP) is high. There was a problem that requires a lot of operating and maintenance costs, radio waves.

Accordingly, the present invention has been made to solve the above problems, and an object of the present invention is to provide two service providers in a hot-spot area such as a subway underground section, a building, and a history where a lot of traffic occurs. A public access point (AP) system for hot-spots for portable Internet services that can provide high-quality services at low cost by installing and supporting portable Internet small common base stations. And a method of operating the same.

A method for operating a public access point (AP) for a portable Internet service hot spot according to the present invention for achieving the above object is for wireless Internet access and network connection in a first mobile terminal subscribed to a first operator. Transmitting and receiving a signal to and from a public access point (AP) installed in a corresponding area; Transmitting and receiving a signal to and from the public access point (AP) installed in a corresponding region for wireless internet access and network connection in a second mobile terminal subscribed to a second operator; Converts a signal received by the common access point (AP) that has received a radio signal from the first and / or second mobile terminal into a signal component of the corresponding operator, and then access control router (ACR) of the first operator and / or Or transmitting to an access control router (ACR) of the second operator; And from the public access point (AP) receiving a signal from the access control router (ACR) of the first operator and / or the access control router (ACR) of the second operator to the first and / or second mobile terminal. And providing a wireless Internet access and network connection service by transmitting a wireless signal, wherein the public access point includes an operation maintenance function, a call control and traffic processing function, a network of the public access point. It performs functions including access function, packet routing function, alarm processing function, clock generation and supply function, switching function, modem and MAC function.

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In accordance with an aspect of the present invention, there is provided a public access point system for a portable Internet service hot spot, including: a mobile terminal; A base station apparatus for transmitting and receiving signals with the portable terminal, comprising: a common access point (AP) commonly used by a plurality of operators in a region; And a plurality of access control routers (ACRs) connected to the common access point (AP) to perform functions including an IP router and a handover to provide wireless Internet access and network connection services to the portable terminal, respectively. The common access point (AP) converts a radio signal received from the mobile terminal into a signal component of the operator and outputs it to any one of a plurality of baseband subsystems (BBS), and the plurality of baseband subsystems ( A radio frequency subsystem (RFS) unit for converting a signal received from the BBS) unit and transmitting the converted signal to the portable terminal; And transmitting the signal of the mobile terminal received from the radio frequency subsystem (RFS) unit to an access control router (ACR) of the service provider, and transmitting the signal received from the access control router (ACR) of the service provider to the radio frequency. And a plurality of baseband subsystems (BBSs) for transmitting to the subsystem (RFS).

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The RF frequency unit may include: a first multiplexer configured to switch and output signals received from the plurality of base band subsystems (BBS); A first low frequency bandpass filter for filtering out a signal received from the first multiplexer in a low frequency band to remove unnecessary noise; A first mixer for mixing a low frequency signal received from the first low frequency bandpass filter and a reference frequency signal to output a desired high frequency signal; A PLL circuit for generating an intermediate frequency signal by a reference signal to produce the reference frequency signal; A high frequency bandpass filter and matching unit for filtering unnecessary intermediate frequencies of signals received from the PLL circuit in a high frequency band to remove unnecessary noise and matching signals; A voltage compensation amplifier for amplifying the signal received from the first mixer to voltage compensate; A first high frequency bandpass filter for filtering out a signal received from the voltage compensation amplifier only in a high frequency band to remove unnecessary noise; An output power adjustment circuit for receiving a signal from the first high frequency bandpass filter and adjusting an output voltage; A power amplifier for amplifying the signal received from the output power adjustment circuit; An RF switch transmitting a signal received from the power amplifier through an antenna and transmitting a signal received through the antenna to a low noise amplifier; A low noise amplifier (LNA) for amplifying the signal received from the RF switch into a low noise signal; A second high frequency bandpass filter for filtering out a signal received from the low noise amplifier only in a high frequency band to remove unnecessary noise; A second mixer for mixing a high frequency signal received from the second high frequency bandpass filter and the reference frequency signal to output a desired high frequency signal; A second low frequency bandpass filter for filtering out a high frequency signal received from the second mixer only in a low frequency band to remove unnecessary noise; A gain compensation amplifier for amplifying to compensate for the gain of the low frequency signal received from the second low frequency bandpass filter; And a second multiplexer for switching the signal received from the gain compensation amplifier to any one of the plurality of base band subsystems (BBS).

In addition, the plurality of baseband subsystems (BBS) is in communication with any one of the access control router (ACR) of the plurality of operators, the common access point (AP) operation maintenance function, call control function, network connection function A main control subsystem (RPRS) which performs a packet routing function, a clock generation and supply function, a switching function, and an alarm processing function; And a radio channel subsystem for transmitting and receiving signals to and from the radio frequency subsystem (RFS) and performing a modem and MAC function, respectively, connected to the main control subsystem (RPRS). do.

The main control subsystem (RPRS) unit may further include a network interface unit communicating with one of the access control routers (ACRs) of the plurality of operators via Ethernet, and between the network interface unit and the baseband subsystem unit. A switching unit for switching a communication path; A clock generator for generating and supplying a clock synchronized with GPS to the radio frequency subsystem (RFS) and the baseband subsystem; And a processor module unit performing the common access point (AP) operation maintenance function, call control function, network access function, packet routing function, and alarm processing function.

In addition, the wireless channel subsystem unit is connected to the network interface unit of the main control subsystem (RPRS) unit, and stores a table for mapping the IP and port number to the CID in the memory and quickly find the address by the contents of the memory CAM for converting; A modem positioned between the CAM and a baseband converter, and performing demodulation and demodulation of a baseband signal to convert the demodulated data into digital / analog and to remove unnecessary frequencies generated by the conversion process with a bandpass filter; Located between the CAM and the baseband converter, it receives a traffic signal and a control signal from an upper layer, formats it for a lower layer, forms a frame, and delivers the frame to the physical layer or vice versa. MAC; A baseband converter positioned between the modem and MAC and a digital / analog converter, and converting a received signal into a baseband signal; A digital / analog converter positioned between the base band converter and a band pass filter (BPF) and converting a received signal into a digital or analog signal; And a band pass filter (BPF) for transmitting and receiving a signal to and from the radio frequency subsystem (RFS) and removing the noise by passing the received signal in a predetermined band.

Therefore, a mobile Internet small common base station supporting two service providers is installed in hot-spot areas such as underground subways, buildings, and stations, where there is a lot of traffic. By doing so, it is possible to provide high quality service at low cost.

Hereinafter, with reference to the accompanying drawings will be described in detail an embodiment of the present invention. In the drawings, components having the same configuration as in the prior art will be described using the same reference numerals as in the prior art.

Mobile Internet Service Hot For Hot-Spot  Public access point system

3 is a network diagram of a public access point system for a portable Internet service hot-spot according to a preferred embodiment of the present invention.

As shown in FIG. 3, the common access point system for a portable Internet service hot spot according to the present invention transmits and receives a signal to and from a portable terminal (PSS) 10 and the portable terminal (PSS) 10. To provide wireless Internet access and network connectivity, and a common access point (AP) commonly used by first and second operators in one region (for example, region A or region B). 200 and an access of a first service provider, which is connected to the common access point (AP) 200 to perform an IP router function and a handover function, so that the portable terminal provides wireless Internet access and network connection service, respectively. A control router (ACR) 30a and a second provider's access control router (ACR) 30b.

Here, the common access point (AP) 200 is a common small base station supporting at least two or more service providers as base station equipment additionally installed and operated in capacity expansion and hot spots. The common access point (AP) 200 transmits a wireless signal received from the mobile terminal (PSS) 10 to the access control router (ACR) of the service provider by wire, and the access control router of the first service provider. (ACR) 30a or a wired signal received from the access control router (ACR) 30b of the second operator is wirelessly transmitted to the mobile terminal (PSS) 10.

Therefore, in order for the first and second operators, which are mobile phone communication companies, to service in one area, the first and second operators have conventionally had to set up their own access point (AP) in the same area. As such, only one common access point (AP) 200 that can be commonly used by the first and second operators in one region is installed to implement the service for both the first and second operators.

If the public access point (AP) 200 is installed and operated as a small common base station in a hot spot area such as subway underground sections, buildings, and history, where a lot of traffic is generated, a hot spot Compared to installing and operating a standard base station to cover an area, it is possible to provide high quality service at low cost.

Public access point (AP) (200)

4 is a functional block diagram of the public access point (AP) 200 shown in FIG.

As shown in FIG. 4, the common access point (AP) includes one Radio Frequency Subsystem (RFS) unit 230 which is commonly used by the first and second operators, and the first and the first. Two baseband subsystem (BBS) portions 210, 220. In this case, the first and second baseband subsystem (BBS) unit 210, 220 may vary depending on the number of operators, at least two baseband subsystem (BBS) for the two service providers A part is provided.

The radio frequency subsystem (RFS) unit 230 is a part commonly used to provide a service to a plurality of operators, the radio signal received from the mobile terminal (PSS) 10 to the signal of the operator And converts the component into one of the first and second baseband subsystem (BBS) units 210 and 220, and outputs the first and second baseband subsystem (BBS) units 210 and 220. The signal received from the mobile terminal is converted and transmitted to the portable terminal (PSS) 10.

In addition, the first and second baseband subsystem (BBS) unit 210 and 220, the signal of the mobile terminal (PSS) 10 received from the radio frequency subsystem (RFS) unit 230. Is transmitted to the access control router (ACR) 30a of the first operator or the access control router (ACR) 30b of the second operator, and the access control router (ACR) 30a of the first operator or the The signal received from the access control router (ACR) 30b of the second operator is transmitted to the radio frequency subsystem (RFS) unit 230.

On the other hand, the state monitoring of the output, oscillation, performance, reception sensitivity, normal operation, etc. of the radio frequency subsystem (RFS) unit 230 can be managed by a common operation maintenance company for the public subsystem. The radio channel operation and resource management of the first and second baseband subsystems (BBS) unit 210 and 220 is preferably managed by each operator.

First baseband sub System (BBS) section ( 210)

FIG. 5A is a block diagram of the first baseband subsystem BB 210 shown in FIG. 4.

As shown in FIG. 5A, the first baseband subsystem (BBS) unit 210 communicates with an access control router (ACR) 30a of the first operator and maintains the common access point (AP) operation. A main control subsystem (RPRS) unit 310 for performing functions, call control functions, network access functions, packet routing functions, clock generation and supply functions, switching functions, and alarm processing functions; A radio frequency subsystem (RFS) unit 200 of FIG. 4 transmits and receives a signal, and is connected to the main control subsystem (RPRS) unit 310 to perform a modem and MAC function. Channel Subsystem (RBBS) section 320 is included.

The main control subsystem (RPRS) unit 310 includes a processor module unit 311, a clock generator 312, a switching unit 313, and a network interface unit 314.

Herein, the processor module 311 may be configured to maintain an operation maintenance function, a call control function, a network access function, a packet routing function, an alarm processing function, and a traffic control function of the common access point (AP) 200. It performs functions, packet scheduling, mobility control, and IP management.

Among these, the operation maintenance function of the common access point (AP) 200, the system configuration control for performing the loading and control of the base station configuration, such as the initial code value, parameter value, maximum transmission power and the like; Resource management function that uses and manages resources such as system and radio resource, traffic statistics processing, access point (AP) status management and IP control function, operation management with failure, failure diagnosis and alarm function Includes features

The call control function includes a base station initialization function, an initial cell setting function, an initial operation mode setting and control function of a modem and a MAC, a system setting function such as a cell setting release function, an IP allocation, and a mobile terminal (PSS) authentication process. Mobile terminal (PSS) connection function, PSS release function, service addition and deletion function, SCTP (Stream Control Transmission Protocol) signal connection and packet call connection function to maintain and release connection, CAC (Call Admission Control) Data traffic control function, caller ID display service (CID) allocation and release function, quality of service (QOS) and resource management function to allocate and release SFID (Start File Identification).

The network access function performs an access control router (ACR) connection setup and status management function and is connected to a packet routing system through an Ethernet interface.

The clock generator 312 generates a clock synchronized with the GPS and supplies the clock to the required portion of the radio frequency subsystem (RFS) unit 230 and the baseband subsystem 210.

In addition, the switching unit 313 switches a communication path with the network interface unit 314.

In addition, the network interface unit 314 communicates with any one of the access control router (ACR) (30a) (30b) of the first and second operators by Ethernet.

Meanwhile, the radio channel subsystem (RBBS) unit 320 includes a cam (CAM), a modem and a MAC (MAC) 322, a baseband (B / B) converter 323, and a digital / analog (D / A). A conversion unit 324 and a band pass filter (BPF).

Here, the cam CAM is connected to the network interface 314 of the main control subsystem RPRS 310 and stores a table for mapping an IP and a port number to a CID. Find the address by its contents and do a quick conversion.

The modem 322 is located between the CAM 321 and the baseband (B / B) converter 323 and performs digital demodulation by performing demodulation and demodulation of a baseband signal. The bandpass filter removes unnecessary frequencies generated during the conversion.

In addition, the MAC 322 is located between the CAM 321 and the baseband (B / B) converter 323, similar to the modem 322, and is a traffic signal from an upper layer. It receives the control signal, formats it for the lower layer, forms a frame, and delivers it to the physical layer, or vice versa.

The baseband (B / B) converter 323 is located between the modem and MAC (322) and the digital / analog (D / A) converter 324, and receives the received signal. Convert to a baseband signal.

In addition, the digital-to-analog (D / A) converter 324 is located between the baseband (B / B) converter 323 and a band pass filter (BPF) 325, and receives the received signal digitally. Or convert it to an analog signal.

Finally, the band pass filter (BPF) 325 transmits and receives a signal to and from the radio frequency subsystem (RFS) unit 230 and removes noise by passing the received signal in a predetermined band.

The radio channel subsystem (RBBS) unit 320 generates a MAC (MAC) frame by creating a PDU (Protocol Data Unit) to fit up / down link signal data and traffic data to the physical layer. MAC control function for generating and performing inverse function, and ranging for measuring signal propagation delay between base station and mobile terminal to synchronize orthogonal frequency division multiplex (OFDM) signal of uplink signal to base station Perform the (Ranging) function.

The modulation and demodulation function consists of downlink modulation and uplink demodulation, and a modulator uses an orthogonal frequency division multiplex (OFDM) scheme to control information and data allocated to a subchannel using QPSK, 16-QAM, and 64-QAM. It is transmitted in the downlink period through the modulation of. In this case, subchannel allocation and subcarrier allocation according to the base station recognizer are performed, a pilot tone is inserted, and a 1024-point Inverse Fast Fourier Transform (IFFT) is performed.

In this case, the modulated orthogonal frequency division multiplex (OFDM) signal is converted into an IF signal after digital / analog (D / A) conversion and transferred to the RF frequency unit 230. The analog IF signal received by the radio frequency subsystem (RFS) unit 230 is converted to a baseband (B / B) signal, performs analog / digital (A / D) conversion, and then transfers and restores the modem. .

2nd baseband sub System (BBS) section ( 220)

FIG. 5B is a block diagram of the second baseband subsystem BB 220 shown in FIG. 4.

As shown in FIG. 5B, the second baseband subsystem (BBS) unit 220 includes a processor module unit 411, a clock generator 412, a switching unit 413, and a network interface unit 414. A main control subsystem (RPRS) unit 410, a cam (CAM) 421, a modem and MAC (422), a baseband (B / B) conversion unit 423, a digital / analog (D) / A) A radio channel subsystem (RBBS) unit 420 including a conversion unit 424 and a band pass filter (BPF) 425, and includes a first baseband subsystem (BBS) unit (FIG. 210 and its configuration and operation is the same. Therefore, the description of the second baseband subsystem (BBS) unit 220 is the same as the first baseband subsystem (BBS) unit 210 and will be omitted.

Radio frequency sub System (RFS) section ( 230)

FIG. 6 is a configuration diagram of the radio frequency subsystem (RFS) unit 230 shown in FIG. 4.

As shown in FIG. 6, the RF subsystem 230 includes a first multiplexer (MUX) 231, a first low frequency bandpass filter 232, a first mixer 233, Voltage compensation amplifier 234, first high frequency bandpass filter 235, output power adjustment circuit 236, power amplifier (Power Amp: P / A) 237, RF switch 238, low noise amplifier ( 239), second high frequency bandpass filter 240, second mixer 241, second low frequency bandpass filter 242, gain compensation amplifier 243, second multiplexer (MUX) 244, PLL circuit 245, a high frequency bandpass filter and a matching unit 246.

The first multiplexer (MUX) 231 switches the signals received from the first and second baseband subsystem (BBS) units 210 and 220 and outputs the signals to the first low frequency bandpass filter 232. do.

The first low frequency bandpass filter 232 filters the signal received from the first multiplexer 231 in the low frequency band to remove unnecessary noise.

The first mixer 233 mixes a low frequency signal received from the first low frequency bandpass filter 232 and a reference frequency signal received from the high frequency bandpass filter and matching unit 246 to output a desired high frequency signal. .

The voltage compensation amplifier 234 voltage amplifies and outputs the signal received from the first mixer 233 for voltage compensation.

The first high frequency bandpass filter 235 filters out the signal received from the voltage compensation amplifier 234 only in the high frequency band to remove unnecessary noise.

The output power adjustment circuit 236 receives a signal from the first high frequency bandpass filter 235 to adjust the output voltage.

The power amplifier (P / A) 237 amplifies and outputs the signal received from the output power adjustment circuit 236.

The RF switch 238 transmits the signal received from the power amplifier 237 through the antenna ANT and transmits the signal received through the antenna ANT to the low noise amplifier 239.

The low noise amplifier 239 amplifies and outputs a signal received from the RF switch 238 to a low noise signal.

The second high frequency bandpass filter 240 filters out the signal received from the low noise amplifier 239 only in the high frequency band to remove unnecessary noise.

The second mixer 241 mixes a high frequency signal received from the second high frequency bandpass filter 240 and a reference frequency signal received from the high frequency bandpass filter and matching unit 246 to output a desired high frequency signal. .

The second low frequency bandpass filter 242 filters out a high frequency signal received from the second mixer 241 only in a low frequency band to remove unnecessary noise.

The gain compensation amplifier 243 amplifies and outputs the received signal to compensate for the gain of the low frequency signal received from the second low frequency bandpass filter 242.

The second multiplexer 244 switches and outputs the signal received from the gain compensation amplifier 243 to either the first or second baseband subsystem (BBS) unit 210 or 220.

The PLL circuit 245 generates an intermediate frequency signal by the reference signal Ref to produce the reference frequency signal.

Finally, the high frequency bandpass filter and matching unit 246 filters the intermediate frequency signal received from the PLL circuit 245 in the high frequency band to remove unnecessary noise and to match and output the signal.

The radio frequency subsystem (RFS) unit 230 having the above configuration is configured to receive the signal RF1a of the first operator and the signal RF2a of the second operator received by the first multiplexer 231 to the first low frequency. Switch to transmit to the antenna ANT through the band pass filter 232 to the RF switch 238, and transmits a signal received from the mobile terminal PSS through the antenna ANT to the RF switch 238 to A second multiplexer 244 is switched to be transmitted to the first or second baseband subsystem (BBS) unit (210) (220).

The present invention is not limited to the above-described embodiments, but can be variously modified and changed by those skilled in the art, which should be regarded as included in the spirit and scope of the present invention as defined in the appended claims. something to do.

As described above, the public access point (AP) system for the hot-spot for portable Internet service and the method of operating the same according to the present invention have the following effects.

1) Maximum utilization of space and resources through common use

The common access point (AP) is composed of one radio frequency subsystem (RFS) and a plurality of baseband subsystems (BBS), as shown in FIG. Was to be used in common. Therefore, the cost can be reduced by sharing the radio frequency subsystem (RFS) so that various operators can use it in common, and it is possible to maximize space utilization by not having to install communication equipment separately for each operator.

2) Reduction of investment cost by preventing duplicate investment

-A single base station can be shared by several operators to prevent duplicate investments.

-It can reduce operator's investment cost and increase user's convenience by reducing service location constraints, and enable rental cost reduction and roaming functions of places, thereby limiting service space even in areas where operators' own networks are not established. I can solve it.

3) Increase operator's operation and maintenance efficiency

-In case of using a common access point (AP) in a traffic-intensive area such as subway, underground section, department store, etc., the use of a common access point (AP) can improve work efficiency in terms of operation and maintenance. have.

4) Reduction of radio wave usage fee due to common use by small access point (AP) equipment

-When using a common access point (AP) in common, it is possible to reduce the radio wave fee and radio station inspection fee.

Claims (8)

delete Transmitting and receiving a signal to a public access point (AP) installed in a corresponding area for wireless internet access and network connection in a first mobile terminal subscribed to a first operator; Transmitting and receiving a signal to and from the public access point (AP) installed in a corresponding region for wireless internet access and network connection in a second mobile terminal subscribed to a second operator; Converts a signal received by the common access point (AP) that has received a radio signal from the first and / or second mobile terminal into a signal component of the corresponding operator, and then access control router (ACR) of the first operator and / or Or transmitting to an access control router (ACR) of the second operator; And The public access point (AP) receiving a signal from the access control router (ACR) of the first operator and / or the access control router (ACR) of the second operator is wireless to the first and / or second portable terminal. And transmitting a signal to provide a wireless Internet access and network connection service. The public access point (AP) is: Operational maintenance function, call control and traffic processing function, network access function, packet routing function, alarm processing function, clock generation and supply function, switching function, modem and MAC function of the common access point (AP) Method of operating a public access point for a portable Internet service hot spot, characterized in that to perform functions, including. delete A mobile terminal; A base station apparatus for transmitting and receiving signals with the portable terminal, comprising: a common access point (AP) commonly used by a plurality of operators in a region; And And a plurality of access control routers (ACRs) connected to the common access point (AP) to perform functions including an IP router and a handover to provide wireless Internet access and network connection services to the portable terminal, respectively. The public access point (AP) is: Converts a radio signal received from the mobile terminal into a signal component of the operator to output to any one of a plurality of baseband subsystem (BBS) unit, and converts the signal received from the plurality of baseband subsystem (BBS) unit Radio frequency subsystem (RFS) unit for transmitting to the portable terminal; And The signal of the mobile terminal received from the radio frequency subsystem (RFS) unit is transmitted to the access control router (ACR) of the carrier, and the signal received from the access control router (ACR) of the carrier is transmitted to the radio frequency sub And a plurality of baseband subsystems (BBSs) for transmitting to a system (RFS) unit. The radio frequency subsystem (RFS) unit comprises: A first multiplexer for switching and outputting signals received from the plurality of base band subsystems (BBS); A first low frequency bandpass filter for filtering out a signal received from the first multiplexer in a low frequency band to remove unnecessary noise; A first mixer for mixing a low frequency signal received from the first low frequency bandpass filter and a reference frequency signal to output a desired high frequency signal; A PLL circuit for generating an intermediate frequency signal by a reference signal to produce the reference frequency signal; A high frequency bandpass filter and matching unit for filtering unnecessary intermediate frequencies of signals received from the PLL circuit in a high frequency band to remove unnecessary noise and matching signals; A voltage compensation amplifier for amplifying the signal received from the first mixer to voltage compensate; A first high frequency bandpass filter for filtering out a signal received from the voltage compensation amplifier only in a high frequency band to remove unnecessary noise; An output power adjustment circuit for receiving a signal from the first high frequency bandpass filter and adjusting an output voltage; A power amplifier for amplifying the signal received from the output power adjustment circuit; An RF switch transmitting a signal received from the power amplifier through an antenna and transmitting a signal received through the antenna to a low noise amplifier; A low noise amplifier (LNA) for amplifying the signal received from the RF switch into a low noise signal; A second high frequency bandpass filter for filtering out a signal received from the low noise amplifier only in a high frequency band to remove unnecessary noise; A second mixer for mixing a high frequency signal received from the second high frequency bandpass filter and the reference frequency signal to output a desired high frequency signal; A second low frequency bandpass filter for filtering out a high frequency signal received from the second mixer only in a low frequency band to remove unnecessary noise; A gain compensation amplifier for amplifying to compensate for the gain of the low frequency signal received from the second low frequency bandpass filter; And And a second multiplexer for switching the signal received from the gain compensation amplifier to any one of the plurality of baseband subsystems (BBS). 2. The method of claim 4, wherein the plurality of baseband subsystems (BBSs) are: Communicate with any one of the plurality of service provider access control routers (ACRs), and maintain the common access point (AP) operation maintenance function, call control function, network access function, packet routing function, clock generation and supply function, switching function, A main control subsystem (RPRS) that performs an alarm processing function; And And a radio channel subsystem for transmitting and receiving signals to and from the radio frequency subsystem (RFS) and performing a modem and MAC function, respectively, connected to the main control subsystem (RPRS). Public access point system for portable Internet service hot spots. The method of claim 6, wherein the main control subsystem (RPRS) unit: A network interface unit for communicating with any one of the access control routers (ACRs) of the plurality of operators by Ethernet; A switching unit for switching a communication path between the network interface unit and the baseband subsystem unit; A clock generator for generating and supplying a clock synchronized with GPS to the radio frequency subsystem (RFS) and the baseband subsystem; And Common access point for a mobile Internet service hotspot, including; the access module (AP) operation maintenance function, call control function, network access function, packet routing function, alarm processing function; Access point system. 8. The system of claim 6 or 7, wherein the radio channel subsystem comprises: A CAM connected to the network interface of the main control subsystem (RPRS) and storing a table for mapping an IP and a port number to a CID in a memory, and for quickly converting an address to a memory content; A modem positioned between the CAM and a baseband converter, and performing demodulation and demodulation of a baseband signal to convert the demodulated data into digital / analog and to remove unnecessary frequencies generated by the conversion process with a bandpass filter; Located between the CAM and the baseband converter, it receives a traffic signal and a control signal from an upper layer, formats it for a lower layer, forms a frame, and delivers the frame to the physical layer or vice versa. MAC; A baseband converter positioned between the modem and MAC and a digital / analog converter, and converting a received signal into a baseband signal; A digital / analog converter positioned between the base band converter and a band pass filter (BPF) and converting a received signal into a digital or analog signal; And And a band pass filter (BPF) for transmitting and receiving a signal to and from the radio frequency subsystem (RFS) and removing the noise by passing the received signal in a predetermined band. Point system.

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