KR100472053B1 - Internet system using wireless Internet connection device with a bluetooth and method of operating the same - Google Patents

Abstract

The present invention relates to an Internet system using a wireless Internet access device equipped with Bluetooth and a method of operating the same. The present invention can effectively manage one or more piconets generated when there is one or more Bluetooth devices, thereby allowing a user to facilitate a Bluetooth connection. The present invention relates to a wireless Internet access device, and to a new Internet system construction and operation method based on the same.

To this end, the present invention is an application software (Multi Piconet Manager) so as to devote only to data communication by deactivating the Inquiry Scan (Page Scan) state of the Bluetooth device connected to the user terminal and communicating It introduces the concept of Agent Bluetooth Repeater, which consists of Bluetooth including Software.

Therefore, the present invention not only can efficiently use resources of all Bluetooth devices installed in the wireless Internet access device, but also the user can easily use the Internet because a private network is automatically generated in a piconet including a plurality of user terminals. .

Description

Internet system using wireless Internet connection device with a bluetooth and method of operating the same}

The present invention relates to an internet system using a wireless Internet access device equipped with Bluetooth, and a method of operating the same. In particular, the user can easily manage a Bluetooth connection by effectively managing one or more piconets generated when there is at least one Bluetooth device. The present invention relates to an internet system using a wireless internet access device equipped with Bluetooth for easily accessing the internet and a method of operating the same.

In general, in addition to Bluetooth, technologies used for short-range wireless data communication include IrDA (Infrared Data Association), wireless LAN (IEEE802.11), SWAP (Shared Wireless Access Protocol), and the like.

Among these, Bluetooth is a short-range wireless data communication technology that can exchange data between various electronic devices at high speed using a radio frequency without a physical cable. When using Bluetooth, data communication between electronic devices is performed by wireless communication, and cable connection is not required even between various electronic devices such as a digital camera and a printer having a Bluetooth function.

Bluetooth aims to establish a standard for wirelessly connecting various electronic devices without cables. The Bluetooth SIG, which was formed in May 1998, is mainly composed of five companies including Ericsson, Nokia, IBM, Toshiba, and Intel. Special Interest Group) was first launched, and after the 'Bluetooth 1.0' standard was decided in the first forum held in the UK in June 1999, the 'Bluetooth 1.1' standard has been recently commercialized.

Bluetooth operates in the 2.4 GHz Industrial Scientific Medical (ISM) frequency band, which does not require a license. The frequency hopping transceiver is designed to resist interference and fading, and the binary FM modulation scheme is designed to minimize the complexity of the transceiver. Designed. In addition, Bluetooth uses a Time-Division Duplex Scheme (TDD) for two-way communication, so that communication between Bluetooth-equipped electronic devices occurs in a time slot (eg, 625 ms) of a certain length of time. . For example, 'Bluetooth 1.1' shows up to 723.3Kbps for asymmetric communication and up to 433.9Kbps for symmetrical communication depending on the packet format of the transmitted data.

However, considering the communication overhead of the protocol stack driving Bluetooth, the actual data rate carried in a Transmission Control Protocol / Internet Protocol (TCP / IP) packet for accessing the Internet. In case of asymmetric communication, it is only about 500Kbps which is far below the maximum transmission speed of 723.3Kbps. For example, in the case of one-to-one (1: 1) communication provided by the Bluetooth standard, the transmission rate is reduced to less than half by time division multiplexing, thereby decreasing the transmission rate in inverse proportion to the number of Bluetoothes forming the piconet. Moreover, even during data transmission, the data rate is further reduced as Bluetooth uses time slots to respond to Inquiry and Connection Requests of other Bluetooth devices outside the piconet.

Meanwhile, a LAN access profile, which is one of the application profiles of Bluetooth, defines a method of using the Internet using Bluetooth. The system implementing the profile is called a 'LAN access point'. As described above, according to the Bluetooth data transmission method, when three or more users use the LAN access point, the data transmission speed is drastically reduced. In actual implementation of LAN access point, the data transmission rate of one-to-one (1: 2) connection is reduced to about 40% or less compared to one-to-one connection.

In order to solve this problem, if there are several Bluetooth devices of the same function in a LAN access point and another Bluetooth device in one of them wants to connect to the Internet, it is desirable to connect to a device that forms a piconet as small as possible. However, the current technology is difficult to implement. Moreover, although Bluetooth can configure an Ad-hoc communication network between seven electronic devices in a network configuration called a piconet, it is difficult to configure a communication network between piconets for connecting more electronic devices. Therefore, if the problems of Bluetooth described above are not solved, many users will feel great inconvenience in connecting to the Internet using Bluetooth, and thus, many people will not be able to receive high-quality Internet services while on the move.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and allows a user to effectively manage one or more piconets generated when there is at least one Bluetooth device in a wireless network access device equipped with Bluetooth. The purpose is to facilitate this.

In addition, the present invention is to efficiently manage a plurality of Bluetooth installed in the Bluetooth-equipped wireless Internet access device, and to efficiently manage the Internet resources delivered to the terminal via the PAN manager of the plurality of Bluetooth is another object There is this.

In addition, in the present invention, a private network generated by the PAN manager has the same network class, and another object of the present invention is to enable a service provided by network protocols installed in a wireless Internet access device according to an embodiment of the present invention.

To this end, the present invention is an application software called multiple piconet manager in order to dedicate the Inquiry Scan (Page Scan) state of the Bluetooth device connected to the user terminal and communicate with each other, so that it can concentrate on data communication only. Introduces the concept of Agent Bluetooth, which consists of Bluetooth including (Application Software).

The present invention provides a plurality of Bluetooth-equipped devices that form a group through an internal communication network; And an agent Bluetooth repeater connected to the Bluetooth-equipped device through the internal communication network and relaying a connection between the Bluetooth-equipped device and the user terminal according to a connection request of a Bluetooth-equipped user terminal through an external communication network. To provide.

In addition, the present invention provides a method for operating an Internet between the Internet system and a user terminal of claim 1, wherein the user terminal requests to connect an external communication network to the agent Bluetooth repeater for connection with any one of a plurality of Bluetooth-equipped devices. And a second step of connecting, by the multiple piconet manager of the agent Bluetooth repeater, any one Bluetooth-equipped device selected from the Bluetooth-equipped devices and the user terminal according to a connection request of the user terminal. The terminal provides a method for operating the Internet, including a third step of sharing an internet service with the selected Bluetooth-equipped device through a private network formed by connection with the selected Bluetooth-equipped device.

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

1 is a block diagram of an Internet system including a wireless Internet access device using Bluetooth according to a preferred embodiment of the present invention.

Referring to FIG. 1, the Internet system of the present invention may be configured with an agent Bluetooth repeater 100 and a plurality of Bluetooth-equipped devices, hereinafter, composed of three Bluetooth-equipped devices 110a to 110c. The case will be described as an example.

The agent Bluetooth repeater 100 refers to a device that actually establishes a connection with a user's terminal equipped with Bluetooth (hereinafter referred to as a 'Bluetooth terminal') 120 through a network (for example, an internet network). When the agent Bluetooth repeater 100 receives a connection request from the Bluetooth terminal 120, the agent Bluetooth repeater 100 notifies the connection request to each of the Bluetooth-equipped devices 110a to 110c to cause the Bluetooth-equipped devices 110a to 110c to receive the Bluetooth terminal. It acts as a Bluetooth access agent to help establish a connection with 120.

The first to third Bluetooth-equipped devices 110a to 110c are actually connected to the agent Bluetooth repeater 100 through a private network, and initially have an Inquiry Scan and a connection request so as not to respond to a query of the Bluetooth terminal 120. The page scan is set in an inactive state, but is activated by the connection request of the agent Bluetooth repeater 100 and then connected to the Bluetooth terminal 120. As described above, three Bluetooth-equipped devices 110a to 110c are illustrated, but may be expanded according to the type of the Bluetooth device interface. For example, a Bluetooth device using a universal serial bus (USB) interface can be expanded to 127.

Briefly describing the operating characteristics of the Internet system having such a configuration, first, the Bluetooth terminal 120 searches for the Internet system. In this case, only the agent Bluetooth repeater 100 responds to the Internet system because the query scan and the connection request scan of the first to third Bluetooth equipped devices 110a to 110c are inactive. Accordingly, the Bluetooth terminal 120 receives information about a function of the Internet system such as a LAN Access Profile through the SDP (Service Discovery Protocol) installed in the Internet system.

Thereafter, the Bluetooth terminal 120 attempts a connection request to the agent Bluetooth repeater 100 after checking the function of the network system. Accordingly, the agent Bluetooth repeater 100 receives an HCI event called a connection request from the Bluetooth terminal 120, and any one of the first to third Bluetooth equipped devices 110a to 110c, for example, Instructs the first Bluetooth-equipped device 110a to establish a connection to the Bluetooth terminal 100. At this time, the agent Bluetooth repeater 100 reads a clock offset (ie, a clock offset between the agent Bluetooth repeater and the Bluetooth terminal) from the connection request packet received from the Bluetooth terminal 120, and the first Bluetooth-equipped device 110a. ) And calculates a clock offset between the Bluetooth terminal 120 and passes it to the first Bluetooth-equipped device 110a as a factor.

To this end, the agent Bluetooth repeater 100 should have a clock offset of the first to third Bluetooth equipped devices 110a to 110c as a database, and update the database at regular intervals. Up to 20ppm error rate on the clock eliminates frequent database updates. In addition, this clock offset is a parameter used as a reference during the connection process, so it does not require great accuracy. Among the first to third Bluetooth equipped devices 110a to 110c, the first Bluetooth equipped device 110a receiving an instruction from the agent Bluetooth repeater 100 attempts to connect to the Bluetooth terminal 120.

Then, after the RFCOMM connection is made between the first Bluetooth-equipped device 110a and the Bluetooth terminal 120, the PAN manager of the first Bluetooth-equipped device 110A is connected to the Bluetooth terminal 120 for use of the Internet such as an IP address and a gateway. Deliver environmental information. This process occurs when a Point-to-Point Protocol (PPP) connection is established after an RFCOMM connection is made. Then, the user uses the Internet through the Internet system using the Bluetooth terminal 120.

2 is a protocol stack structure diagram of a Bluetooth device (hereinafter referred to as 'agent Bluetooth') mounted on the agent Bluetooth repeater 100, and FIG. 3 is a Bluetooth device (hereinafter referred to as 'actual') mounted on the Bluetooth-equipped devices 110a to 110c. Bluetooth's protocol stack structure.

2 and 3, the protocol stacks of the agent Bluetooth and the actual Bluetooth are similar in configuration as shown, but in the protocol stack of the actual Bluetooth, the multiple piconet managers are essentially included in the protocol stack of the agent Bluetooth. 115 is included as an option.

The protocol stacks of the agent Bluetooth and the actual Bluetooth of the present invention further include multiple piconet managers 105 or 115 in the standardized protocol stack structure of Bluetooth, respectively. Accordingly, only the meaning of the standardized Bluetooth protocol stack will be briefly described herein, and only the multiple piconet managers 105 and 115 and the PAN manager 116 will be described in detail.

The protocol stack structure of Agent Bluetooth is composed of Bluetooth module 101, HCI transport layer 102, L2CAP 103, RFCOMM 104, and multiple piconet manager 105. The protocol stack structure of the actual Bluetooth is composed of the Bluetooth module 111, the HCI transport layer 112, the L2CAP 113, the RFCOMM 114, the multiple piconet manager 115, and the PAN manager 116.

The Bluetooth modules 101 and 111 are independent devices connected to a device to use Bluetooth by a wired serial communication standard such as RS232C or USB.

HCI Transport Layer (HCI Transport Layer) 102 and 112 is RS232C or USB, and controls the module in response to a series of commands and responses defined in the standard, and transmits and receives data by the host.

Logical Link Control and Adaptation Protocol (L2CAP) 103 and 113 is a communication protocol defined in the standard, and is a protocol located above the HCI transport layers 102 and 113. It provides services that serve as abstractions for groups and groups. By the L2CAP 103 and 113, a higher protocol and an application not shown can transmit and receive L2CAP packet data having a length of up to 64 Kbytes.

RFCOMM (104 and 114), also known as 'Cable Replacement Protocol', is a protocol that replaces serial transmission such as RS232C for connecting modems, and RS232C is used for higher protocols such as OBEX (Object Exchange Protocol). It serves to support data signals on the control or baseband.

In addition, although not shown in Figure 2, the upper protocol stacks include PPP 117, IP (Internet Protocol), TCP / UDP 118, and the like, and also TCS Telephony Control Protocol Specification Binany (BIN) for application as a telephone. There is a protocol, and there are Bluetooth protocols such as WAP (Wireless Appication Protocol) and WAE for large file transfer. The operation of this higher protocol is controlled by the L2CAP 113 via the RFCOMM 114.

Since the multiple piconet managers 105 and 115 and the PAN manager 116 are slightly different in their functions in Agent Bluetooth and Actual Bluetooth, they will be described in detail in Table 1 below.

Multi Piconet Manager Agent bluetooth -It manages Bluetooth devices attached to wireless internet access devices.-Monitors the connection status and data transmission speed of the actual Bluetooth.-Distributes the connection requests coming into agent Bluetooth from the monitored results to the devices equipped with Bluetooth. Actual Bluetooth -After receiving connection command from agent Bluetooth, executing HCI / L2CAP / RFCOMM / PPP connection to make Bluetooth connection with Bluetooth terminal-Report the result to agent Bluetooth when establishing or terminating connection with Bluetooth terminal Role. PAN Manager Agent bluetooth -Optional part-PAN manager's network policy, which is individually present in several active Bluetooth, collectively: Two Bluetooth piconets can be combined into one subnet. Actual Bluetooth -Application of piconet's network policy using Master of actual Bluetooth: Network environment variables such as subnet, gateway, etc.-In addition to PPP authentication, if authentication process such as IEEE802.1X is required, authentication process is performed in PAN management. Bluetooth connection is disconnected if the PPP connection fails or the user terminates the connection, and reports the result to the multi-pionet manager of the actual Bluetooth.

4A and 4B are flowcharts illustrating a method of operating the Internet system illustrated in FIG. 1 by the multiple piconet manager and PAN manager shown in FIGS. 2 and 3 according to the present invention.

In detail, FIG. 4A is a flowchart illustrating a process of establishing a connection when a user attempts to connect to a network system through a Bluetooth terminal 120 capable of using the Internet. FIG. A flowchart illustrating a process of terminating the connection of the Bluetooth terminal 120 is shown.

Referring to FIG. 4A, the user requests a connection to a wireless Internet access device of the Internet system through the Bluetooth terminal 120 (step S401). In this step, since the query scanning of the first to third physical Bluetooth (hereinafter, the drawing number is the same number as the blue pitcher-equipped device) is disabled, the user can select the agent Bluetooth (hereinafter, the drawing number is Agent Bluetooth). Only the same number as the repeater) is found, and the Bluetooth terminal 120 that finds the agent Bluetooth 100 requests the agent Bluetooth 100 to access the Internet.

Subsequently, the HCI transport layer of the agent Bluetooth 100 notifies that the connection request is transmitted from the Bluetooth terminal 120 to the multiple piconet manager 105, and the multiple piconet manager 105 receives the first to third virtual Bluetooth 110a. It is checked whether there is a connectable Bluetooth resource from the connection state database of step 110c) (steps S402 and S403).

At this time, if there is a resource that can be connected to the connection state database of the first to third physical Bluetooth (110a to 110c), it is determined based on the size of the piconet and data transmission rate in the piconet of the actual Bluetooth (110a to 110c) Assuming that the optimal physical Bluetooth is selected for a new connection and, for example, the first physical Bluetooth 110a has been selected, the multiple piconet manager 105 may send the selected first physical Bluetooth 110a to the Bluetooth terminal 120. The instruction is made to make a connection with (steps S404 and S405).

Accordingly, when a Bluetooth connection is made between the wireless network access device and the Bluetooth terminal 120, the Bluetooth terminal 120 establishes a connection with the RFCOMM 114 through the L2CAP 113 of the first physical Bluetooth 110a. RFCOMM 114 then calls PAN manager 116 (steps S406 and S407).

Thereafter, the PAN manager 116 forms a private network based on the first physical Bluetooth 110a, and the user's Bluetooth terminal 120 starts from the private network with the first virtual Bluetooth 110a as a router. The Internet service is used as one station (steps S408 and S409).

Subsequently, referring to FIG. 4B, when the user disconnects the Internet connection from the Bluetooth terminal 120 and the Bluetooth connection is disconnected, the multi piconet manager (HCI transport layer 112 of the first physical Bluetooth 110a) may be disconnected. 115), the connection is disconnected (steps S410 and S411). The multiple piconet manager 115 of the first virtual Bluetooth 110a notifies the multiple piconet manager 105 of the agent Bluetooth 100 (step S412).

Thereafter, the multiple piconet manager 105 of the agent Bluetooth 100 releases resources, updates the database storing the connection state of the first physical Bluetooth 110a, and ends the connection termination process (step S413).

FIG. 5 is a flow chart showing in detail the operating characteristics of the multi-pionet manager 105 of agent Bluetooth and the multi-pionet manager 115 of active Bluetooth performed in steps S401 to S405 shown in FIG. 4A.

Referring to FIG. 5, as described in FIG. 4A, the agent Bluetooth 100 that has received a connection request from the Bluetooth terminal 120 by the user notifies the multiple piconet manager 105 that the connection request has arrived (step S501). The multiple piconet manager 105 checks whether there is an accessible resource from the connection state database of the first to third virtual Bluetooths 110a to 110c (S502).

At this time, if there is a resource that can be connected to the connection state database of the first to third physical Bluetooth (110a to 110c), it is determined based on the size of the piconet and data transmission rate in the piconet of the actual Bluetooth (110a to 110c) Assuming that the optimal physical Bluetooth is selected for a new connection and, for example, the first physical Bluetooth 110a is selected, the multi piconet manager 105 requests the first physical Bluetooth 110a to connect to the user Bluetooth. The Bluetooth address (BD Address) of the terminal 120 is notified to instruct the Bluetooth terminal 120 to establish a connection satisfying the LAN LAN access profile (steps S503 and S504).

This instruction is given to the multiple piconet manager 115 of the first physical Bluetooth 110a, and the multiple piconet manager 115 which has been instructed sends a Bluetooth message to the HCI transport layer 112 of the first physical Bluetooth 110a. Instructs to establish a Bluetooth connection with the terminal 120 (step S505).

FIG. 6 is a flowchart specifically illustrating an operation characteristic of the PAN manager 116 of the first virtual Bluetooth 110a performed in steps S406 to S408 shown in FIG. 4A.

Referring to FIG. 6, when the RFCOMM connection is made as described with reference to FIG. 4A, the virtual serial connection is performed at the RFCOMMs 104 and 114 of the agent Bluetooth 100 and the first virtual Bluetooth 110a.

The PAN manager 116 of the first physical Bluetooth 110a examines the connected serial port and determines the Bluetooth terminal 120 and the PPP 117 according to a private network generation policy set internally at the time of installing the wireless Internet access device of the network system. PPP connection is attempted (steps S601 and S602). Here, the private network creation policy assigns an independent network class for each piconet.

Subsequently, if the PAN manager 116 passes the authentication process that occurs during the PPP connection, the PAN manager 116 transmits network environment information such as an IP address and a name server to the Bluetooth terminal 120 through the PPP 117 (steps S603 and S604). Once the PPP connection between the first physical Bluetooth 110a and the blue pitcher terminal 120 is established, a private network using the first physical Bluetooth 110a as a network router is formed.

Through this process, a Bluetooth terminal user who wants to access the Internet is automatically incorporated into a private network and can receive various services using various types of Internet protocols installed in a wireless Internet access device of the Internet system.

The above-described operating software other than the operating system (OS) and the Bluetooth protocol stack to be used in the wireless Internet access device using Bluetooth of the present invention described above have been omitted in order not to obscure the gist of the present invention, Those skilled in the art will be able to easily implement the present invention based on the above description. In addition, although the technical spirit of the present invention has been described in detail according to the above-described preferred embodiment, it should be noted that the above-described embodiment is for the purpose of description and not of limitation. In addition, those skilled in the art will understand that various embodiments are possible within the scope of the spirit of the present invention.

As described above, the present invention can not only efficiently manage piconets of a plurality of Bluetooth-equipped Bluetooth devices using an agent Bluetooth repeater, but also use multiple piconet managers and PAN managers. It is possible to efficiently manage the Internet resources delivered to the terminal. Accordingly, even when there are a large number of users, the speed of using the Internet can be increased.

In addition, in the present invention, the private network generated by the PAN manager may have the same network class, and may use the services provided by the network protocols installed in the Internet access system according to the embodiment of the present invention.

1 is a configuration diagram of an internet system.

2 is a protocol stack structure diagram of agent Bluetooth.

3 is a diagram of protocol stack structure of actual Bluetooth.

4A and 4B are flowcharts illustrating a method of operating the Internet system shown in FIG. 1.

FIG. 5 is a flowchart illustrating an operation characteristic of the multiple piconet manager of agent bluetooth and the multiple piconet manager of active bluetooth performed in steps S401 to S405 shown in FIG. 4A.

FIG. 6 is a flowchart illustrating an operation characteristic of the PAN manager of the actual Bluetooth performed in steps S406 to S408 shown in FIG. 4A.

<Explanation of symbols for the main parts of the drawings>

       100: Agent Bluetooth Repeater

       110a to 110c: Bluetooth equipped device

120: Bluetooth terminal 101, 111: Bluetooth module

102, 112: HCI transport layer

103, 113: L2CAP 104, 114: RFCOMM

105, 115: Multiple Piconet Manager

116: PAN Manager 117: PPP

118: TCP / IP

Claims (9)

A plurality of Bluetooth-equipped devices forming a group through an internal communication network; And Including an agent Bluetooth repeater connected to the Bluetooth-equipped device and the internal communication network, and relays the connection between the Bluetooth-equipped device and the user terminal according to a connection request of a Bluetooth-equipped user terminal through an external communication network, The Bluetooth mounted on the Bluetooth-equipped device includes a first multiple piconet management means for executing a program for establishing a Bluetooth connection with the user terminal after receiving a connection request from the agent Bluetooth repeater. The agent Bluetooth repeater manages a second multiple piconet for monitoring connection state and data transmission rate of the Bluetooth-equipped device and distributing a connection request to the agent Bluetooth repeater to a plurality of Bluetooth-equipped devices according to the monitored result. Internet system using a wireless Internet access device equipped with Bluetooth, characterized in that it comprises a means. delete delete The method of operating between an internet system and a user terminal using a wireless Internet access device equipped with a Bluetooth of claim 1, A first step of the user terminal requesting an external communication network to connect to the agent Bluetooth repeater for connection with any one of a plurality of Bluetooth-equipped devices; A second step of connecting, by the multiple piconet manager of the agent Bluetooth repeater, the user terminal with any one Bluetooth-equipped device selected from the Bluetooth-equipped devices according to a connection request of the user terminal; And The user terminal may include a third step of sharing an Internet service with the selected Bluetooth-equipped device through a private network formed by the connection with the selected Bluetooth-equipped device. How the system works. The method of claim 4, wherein the second step comprises: a second piconet manager of the agent Bluetooth repeater checking whether there is an accessible resource from a connection state database of a plurality of Bluetooth-equipped devices according to a connection request of the user terminal; -Stage 1; And And selecting a Bluetooth-equipped device having an optimal resource among the Bluetooth-equipped devices in which the resource exists, and establishing a connection with the user terminal through the multiple piconet manager of the selected Bluetooth-equipped device. An operating method of an internet system using a wireless internet access device equipped with a Bluetooth. The method of claim 4, wherein the third step comprises: forming a virtual serial port connection with the RFCOMM of the user terminal through the RFCOMM of the selected Bluetooth equipped device, and then calling the PAN manager of the selected Bluetooth equipped device. step; Step 3-2, wherein the PAN manager checks the connected virtual serial port and performs an authentication process to make a PPP connection with the user terminal through PPP according to a preset private network creation policy; Passing the authentication process, the PAN manager providing information on a network environment to the user terminal through the PPP to form a PPP connection between the user terminal and the selected Bluetooth-equipped device; And And a third step of forming a private network using the selected Bluetooth-equipped device as a router of the network according to the PPP connection establishment. The method of claim 6, wherein the network environment includes an IP address and a name server of the selected Bluetooth-equipped device. The method of claim 6, wherein the private network creation policy allocates an independent network class for each piconet of the selected Bluetooth-equipped device. 5. The method of claim 4, wherein after the third step, the user terminal terminates the connected Internet connection to disconnect the Bluetooth connection with the selected Bluetooth-equipped device and then disconnects from the multiple piconet manager of the selected Bluetooth-equipped device. Informing the fourth step; A fifth step of notifying the multiple piconets manager of the selected Bluetooth-equipped device to the multiple piconets manager of the agent Bluetooth repeater; And The multiple piconet manager of the agent Bluetooth repeater further includes a sixth step of releasing resources of the selected Bluetooth-equipped device, updating the database storing the connection state, and terminating the connection. Operation method of internet system using internet access device.