KR100695201B1 - Method and System for Broadcasting Communications between Bluetooth Device and Wireless Communication Network - Google Patents

Abstract

The present invention relates to a communication relay method and system between a Bluetooth device and a mobile communication network.

The present invention provides a communication method between a Bluetooth slave using an IP address management table and a communication between a Bluetooth slave and a mobile communication network in a system including at least one Bluetooth slave, a Bluetooth master, and a mobile communication network, comprising: (a) a Bluetooth slave and a Bluetooth network; Generating an IP address management table; (b) receiving a request for data communication with a specific IP address from a first Bluetooth slave; (c) determining whether a specific IP address exists in the IP address management table; (d) determining whether the first Bluetooth slave requests a Transmission Control Protocol (TCP) connection or a User Datagram Protocol (UDP) connection when the specific IP address does not exist in the IP address management table in step (c); (e) requesting a Point-To-Point Protocol (PPP) setting to the mobile communication network if it is determined in step (d) that the first Bluetooth slave requests a TCP connection; (f) determining whether to support multiple PDP-Contexts using a mobile communication network; (g) if it is determined in step (f) that multiple PDP-contexts are supported, determining whether the PDP-Context maximum value is exceeded using a mobile communication network; And (h) if it is determined in step (g) not to exceed the PD-context, requesting creation of the PD-context from the mobile communication network, assigning an Internet IP address, and providing data communication between the first Bluetooth slave and the mobile communication network. It provides a method for providing communication between a Bluetooth device and a mobile communication network comprising a.

According to the present invention, a Bluetooth slave generates an IP address management table which maps and stores a local IP address allocated when a Bluetooth master configures a Bluetooth network and an Internet IP address allocated from a mobile communication network, thereby allowing the Bluetooth slave to perform another Bluetooth slave through the Bluetooth master. Data communication with the Bluetooth slave or data communication with the mobile communication network is possible.

Bluetooth, IP Address Management Table, Mobile Network, PDSN

Description

Method and system for communication relay between Bluetooth device and mobile communication network {Method and System for Broadcasting Communications between Bluetooth Device and Wireless Communication Network}

1 is a diagram illustrating a Bluetooth specification showing a virtual RFCOMM configuration in a master module when multiple ports are simultaneously opened for multiple Bluetooth devices to provide an RFCOMM service.

2 is a diagram illustrating a multi-connection in which a handset including Bluetooth communicates with a Bluetooth peripheral device and a mobile communication network based on IP;

3 is a diagram schematically illustrating a system for providing communication between a Bluetooth slave connected to a Bluetooth master and communication between a Bluetooth slave and a mobile communication network according to an embodiment of the present invention;

4 is a view showing an IP address management table generated in a Bluetooth master according to a preferred embodiment of the present invention;

5 is a diagram schematically illustrating a method for providing communication between a Bluetooth slave connected to a Bluetooth master and a communication between a Bluetooth slave connected to a Bluetooth master and a mobile communication network according to a preferred embodiment of the present invention;

6 is a diagram schematically showing a data communication system between Bluetooth slaves via a Bluetooth master according to another embodiment of the present invention;

7 is a view showing an IP address management table generated in a Bluetooth master according to another embodiment of the present invention;

8 is a diagram schematically illustrating a method for providing data communication between Bluetooth slaves connected to a Bluetooth master according to another exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

310, 610: Bluetooth slave 311, 611: Bluetooth slave 1

312, 612: Bluetooth slave 2 330, 630: Bluetooth master

340: mobile communication network 341: wireless base station

343: base station transmitter 345: base station controller

347: mobile communication switching center 349: PDSN

360: Internet

The present invention relates to a communication relay method and system between a Bluetooth device and a mobile communication network. More specifically, by creating an IP address management table in the Bluetooth master included in the Bluetooth network, the Bluetooth slave communicates with other Bluetooth slaves via the Bluetooth master, or the Bluetooth device and the mobile communication network enable the Bluetooth slave to communicate with the mobile communication network. The present invention relates to a communication relay method and system.

Bluetooth is a technical standard for wirelessly connecting mobile devices, including PCs and mobile phones, within a narrow range (10 m to 100 m). Enables the transmission and reception of voice and data without cables. In addition, it uses a frequency of 2.4 GHz band, uses frequency hopping to avoid interference between devices, and maintains high security through data encryption. It supports about 700 kbps. Bluetooth-enabled devices can be applied to almost any electronic device in the office or home, such as mobile phones, headsets, car handsfree, PCs, LAN access points, printers, mice, keyboards, joysticks, and home appliances.

Bluetooth provides an adaptation protocol of various application protocols and existing protocols on top of the physical layer and link layer control protocols, such as providing the PPP and IP layers on top of a serial emulation protocol called RFCOMM. Here, in Bluetooth, a set of stacks including RFCOMM, PPP, and IP is called a LAP (LAN Access Profile) profile. Using the profile configured as described above, IP-based communication function can be used between Bluetooth devices, but in case of Bluetooth technology, it is difficult to provide IP packet communication between multiple Bluetooth slave devices connected to a single Bluetooth handset. The reason is explained below. In addition, it is assumed that the Bluetooth master device comprises a piconet in a network form with several Bluetooth devices, and has a mobile communication terminal function capable of wirelessly communicating voice or data with the mobile communication network.

FIG. 1 is a diagram illustrating a Bluetooth specification showing a virtual RFCOMM configuration in a master module when multiple ports are simultaneously opened to provide a number of Bluetooth devices.

Referring to FIG. 1, when the Bluetooth device configures the piconet, the Bluetooth master device, which is the center of the network configuration, configures the piconet when the Bluetooth device configures the piconet. When providing an IP service for the protocol layer mapping and management scheme for managing the IP management of each Bluetooth slave device is not defined in the current standard.

2 is a diagram illustrating a multi-connection in which a handset including Bluetooth communicates with a Bluetooth peripheral device and a mobile communication network based on IP.

Referring to FIG. 2, in the '2A' area, when a Bluetooth master device receives IP communication by being assigned an IP address by a PDSN (not shown) of a mobile communication network, only one Bluetooth master device is authenticated by the PDSN. You will be assigned an IP address.

In the '2B' area, when the Bluetooth master device assigns one IP address to each of several Bluetooth slave devices, the Bluetooth master device forms a Bluetooth network, which is a network newly established by the Bluetooth master and several Bluetooth slaves. Give master local IP address and assign slave local IP address to each Bluetooth slave.

In this case, the Bluetooth master device forming the Bluetooth network is present in a state in which the IP address granted from the mobile communication network, the master local IP address and the slave local IP address set when the Bluetooth network is configured, are mixed in one Bluetooth master device.

Therefore, when connecting to a mobile communication network through a mobile communication terminal that is a Bluetooth master from a Bluetooth slave that forms a Bluetooth network with a mobile communication terminal that supports Bluetooth, the Internet IP assigned to the mobile communication terminal that is a Bluetooth master and the Bluetooth slave are assigned. Since a collision with the local IP occurs, communication between the Bluetooth slave and communication between the Bluetooth slave and the mobile communication network become impossible.

In order to solve the above problems, the present invention, by generating an IP address management table in the Bluetooth master constituting the Bluetooth network, the Bluetooth slave data communication with the other Bluetooth slave through the Bluetooth master or the Bluetooth slave data communication with the mobile communication network It is an object of the present invention to provide a communication relay method and system between a Bluetooth device and a mobile communication network.

According to a first object of the present invention, a method for relaying communication between a Bluetooth device and a mobile communication network using an IP address management table in a system including at least one Bluetooth slave, a Bluetooth master, and a mobile communication network, comprising: (a) a Bluetooth slave and a Bluetooth network; Configuring and generating an IP address management table; (b) receiving a request for data communication with a specific IP address from a first Bluetooth slave; (c) determining whether a specific IP address exists in the IP address management table; (d) determining whether the first Bluetooth slave requests a Transmission Control Protocol (TCP) connection or a User Datagram Protocol (UDP) connection when the specific IP address does not exist in the IP address management table in step (c); (e) requesting a Point-To-Point Protocol (PPP) setting to the mobile communication network if it is determined in step (d) that the first Bluetooth slave requests a TCP connection; (f) determining whether to support multiple PDP-Contexts using a mobile communication network; (g) if it is determined in step (f) that multiple PDP-contexts are supported, determining whether the PDP-Context maximum value is exceeded using a mobile communication network; And (h) if it is determined in step (g) not to exceed the PD-context, requesting creation of the PD-context from the mobile communication network, assigning an Internet IP address, and providing data communication between the first Bluetooth slave and the mobile communication network. It provides a communication relay method between a Bluetooth device and a mobile communication network comprising a.

According to a second object of the present invention, a communication relay method between a Bluetooth device and a mobile communication network using an IP address management table in a system including a Bluetooth slave and a Bluetooth master, includes: (a) configuring a Bluetooth slave and a Bluetooth network; Generating an IP address management table; (b) receiving a request for data communication with a specific IP address from a first Bluetooth slave; (c) determining whether a specific IP address exists in the IP address management table; And (d) when the specific IP address exists in the IP address management table in step (c), finds a second Bluetooth slave that matches the specific IP address in the IP address management table, and then compares the data with the first Bluetooth slave and the second Bluetooth slave. It provides a communication relay method between a Bluetooth device and a mobile communication network comprising the step of providing communication.

In addition, according to a third object of the present invention, a slave local IP address assigned to a Bluetooth slave constituting a Bluetooth network, a master local IP address assigned by assigning itself as a master of a Bluetooth network, and an Internet IP address assigned from a mobile communication network A Bluetooth master that provides a routing function by using an IP address management table stored in a table format; A Bluetooth slave configured to establish a Bluetooth network with the Bluetooth master and to transmit a specific IP address to be communicated to the Bluetooth master to provide communication between other Bluetooth slaves or mobile communication networks constituting the Bluetooth network through the Bluetooth master; And a mobile communication network that transmits and receives data wirelessly with the Bluetooth master and provides communication between the Bluetooth master and another network.

In addition, according to the fourth object of the present invention, IP address management in which a slave local IP address for allocating a Bluetooth slave constituting a Bluetooth network and a master local IP address for assigning and assigning itself as a master of a Bluetooth network are stored in a table format. A Bluetooth master providing a routing function using a table; And a Bluetooth slave configured to establish a Bluetooth network with the Bluetooth master and transmit a specific IP address to be communicated to the Bluetooth master to receive communication between the other Bluetooth slaves configuring the Bluetooth network through the Bluetooth master. And a communication relay system between the mobile communication network and the mobile communication network.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, 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 the present embodiment, a mobile communication network or a wireless communication network is described as a CDMA mobile communication network, but the present invention is not limited thereto. The European GSM mobile communication network, TDMA mobile communication network, IMT-2000 mobile communication network, W-CDMA mobile communication network, and ultra high speed (HPi) ) It is a broad concept that includes any mobile communication network which relays wireless data between terminals such as mobile communication network.

3 is a diagram schematically illustrating a system for providing communication between a Bluetooth slave connected to a Bluetooth master and a communication between a Bluetooth slave and a mobile communication network according to a preferred embodiment of the present invention.

In the preferred embodiment of the present invention, for convenience of description, it is assumed that a mobile communication terminal that supports the Bluetooth function among the Bluetooth devices constituting the Bluetooth network and that can be connected to the Internet through the mobile communication network is a Bluetooth master, It is assumed that the Bluetooth slave is described.

The system according to a preferred embodiment of the present invention includes a Bluetooth slave 310, a Bluetooth master 330, a mobile communication network 340, the Internet 360, and the like.

Bluetooth slave 310 according to a preferred embodiment of the present invention is a device that can be applied to the Bluetooth function, such as mobile phones, headsets, car hands-free, PC, LAN access point, printer, mouse, keyboard, joystick, home appliances, such as office or home All electronics, etc. Here, the Bluetooth slave 310 according to the preferred embodiment of the present invention configures a Bluetooth network wirelessly with the Bluetooth master 330 and receives a 'slave local IP address' from the Bluetooth master 330, and receives the Bluetooth master 330, And a point-to-point protocol (PPP) connection to the Internet 360 via the mobile communication network 340. In addition, the Bluetooth slave 310 according to the preferred embodiment of the present invention preferably enables PPP communication between the Bluetooth devices 310 through the Bluetooth master 330.

Bluetooth master 330 according to an embodiment of the present invention is a terminal that supports the Bluetooth function and can be connected to the Internet 360 through the mobile communication network 340, PDA (Personal Digital Assistant), cellular phone, PCS (Personal) Communication Service (GSM) phones, Global System for Mobile (GSM) phones, Wideband CDMA (W-CDMA) phones, CDMA-2000 phones, Mobile Broadband System (MBS) phones, personal computers, laptops, and the like. Here, when the Bluetooth master 330 according to the preferred embodiment of the present invention configures the Bluetooth network together with the Bluetooth slave 310, it sets itself as a master of the Bluetooth network and allocates a 'master local IP address' to each Bluetooth. The slave 310 allocates a 'slave local IP address'. In addition, the Bluetooth master 330 according to a preferred embodiment of the present invention includes a cellular module and is assigned an 'Internet IP address' from the PDSN 349 of the mobile communication network 340 using the 'Internet IP address' to access the Internet ( PPP connection is possible with 360). In addition, the Bluetooth master 330 according to a preferred embodiment of the present invention generates an 'IP address management table' storing 'master local IP address', 'slave local IP address' and 'Internet IP address' in a table format. The Bluetooth slave 310 provides a routing function for enabling a PPP connection to the mobile communication network 340 and enabling IP socket communication between each Bluetooth slave 310.

The cellular module of the Bluetooth master 330 according to the preferred embodiment of the present invention preferably supports multiple PDDP-Contexts. Here, when the Bluetooth master 330 supports multiple PD-contexts, the Bluetooth master 330 can be provided with one or more Internet IP addresses from the PDSN 349, thereby connecting several Bluetooth slaves connected to the Bluetooth master 330. The 310 may communicate with the mobile communication network 340 through different Internet IP addresses. In addition, even if the cellular module of the Bluetooth master 330 supports multiple PD-contexts, the maximum number of Internet IP addresses that can be allocated from the PDSN 349 is limited, so that all the Bluetooth slaves 310 have one Internet IP address. It is not possible to communicate with the mobile communication network 340 through. In other words, the cellular module currently supported generally cannot be assigned more than three Internet IP addresses due to the specification. If the maximum value of three is assigned, the Bluetooth module 330 is connected to the Bluetooth slave 330. Each of them may be assigned to communicate with the mobile communication network 340, but the remaining Bluetooth slaves 330 may share the other Internet IP address to communicate with the mobile communication network 340.

4 is a diagram illustrating an IP address management table generated in a Bluetooth master according to a preferred embodiment of the present invention.

Referring to FIG. 4, the IP address management table is a table for storing IP addresses assigned to a master cell, a Bluetooth master, and at least one Bluetooth slave, and the like. The master 330 stores the temporarily assigned Internet IP address on the network assigned by the PDSN 349. Here, when the cellular module of the Bluetooth master 330 supports multiple PD-contexts, it is preferable that the master cell row 4A corresponding to the Internet IP address allocated by the Bluetooth master 330 from the PDSN 349 is added.

In addition, the Bluetooth master row 4B stores its master local IP address that becomes the master of the Bluetooth network when the Bluetooth master 330 configures the Bluetooth network with the Bluetooth slave 310. In addition, the Bluetooth slave row 4C stores a slave local IP address assigned by the Bluetooth master 330 to the Bluetooth slave 310 when configuring the Bluetooth network.

Here, in the preferred embodiment of the present invention, the Bluetooth master 330 assigns the local IP addresses assigned when configuring the Bluetooth network, the first three digits of the four digits are assigned the same number, and the last one digit is assigned using the format of the IPv4 standard. The master 330 is assigned to '0' and the remaining Bluetooth slave 310 is preferably assigned to a number greater than or equal to '1'. Here, in the preferred embodiment of the present invention, the local IP addresses are shown in the IPv4 standard format, but the present invention is not limited thereto, and the IPv6 standard is also possible.

Here, BD_ADDRESS, LINK_KEY, AM_ADDR, PM_ADDR are the ADDRESS on the Bluetooth standard for the Bluetooth master 330 to distinguish the Bluetooth slave 310 in the Bluetooth network, which is already disclosed to those skilled in the art, The description will be omitted.

The mobile communication network 340 according to the preferred embodiment of the present invention includes a wireless base station 341, a mobile communication switching center 347, a PDSN 349, and the like.

The wireless base station 341 is a wireless base station 343 is a base station transmission system (BTS) 343, a base station controller (BSC) (345), a repeater (Cell Enhancer: not shown), etc. It is composed.

The base station transmitter 343 according to the preferred embodiment of the present invention transmits a data communication request generated from the Bluetooth master 330 to the mobile switching center (MSC) 347 via the base station controller 345 or itself. A location input for determining the location of the Bluetooth master 330 existing in the cell area under jurisdiction is performed. In addition, the base station transmitter 341 according to the preferred embodiment of the present invention transmits the Internet IP address assigned by the PDSN 349 to the Bluetooth master 330 to the Bluetooth master 330.

The base station controller 345 controls and manages a plurality of base station transmitters 343 and performs various functions required for radio call processing such as handoff. In addition, the base station controller 345 transmits the subscriber information of the location-entered Bluetooth master 330 to the mobile communication switching center 347.

The mobile communication switching center 347 has a control function for allowing the wireless base stations 341 to operate efficiently and an interworking function with an exchange of a public telephone network. When the mobile communication switching center 347 performs position input of the Bluetooth master 330 through the wireless base station 341, the visitor location register (VLR) in the mobile communication switching center 347 is referred to as a 'VLR'. After the subscriber information of the Bluetooth master 330 is temporarily stored, the mobile station requests a location input of a Home Location Register (HLR: HLR) (not shown).

Here, the HLR is a database that stores a service profile regarding the subscriber information of the user of the Bluetooth master 330, including the subscriber's telephone number and the unique number of the Bluetooth master 330 (ESN: Electronic Serial Number, hereinafter referred to as 'ESN'). ), A mobile identification number (MIN), which is a terminal number of the Bluetooth master 330, and information about a service type.

The HLR performs a function of storing subscriber information including information of the wireless base station 341 and the mobile communication switching center 347 where the Bluetooth master 330 is located. The mobile communication switching center 347 is composed of a control unit, a call path unit and a peripheral device, and also has a charging data collection function for the Bluetooth master 330.

When the Bluetooth master 330 performs location input, the VLR temporarily stores subscriber information and notifies the HLR to the VLR. The VLR transfers a copy of the terminal identification number, terminal unique number, and service information of the Bluetooth master 330 from the HLR. While receiving and managing, it performs a function to utilize the position control, call processing, external operation processing of the Bluetooth master 330.

Packet data support node (PDSN) 349 according to a preferred embodiment of the present invention is connected to the base station controller 341 and the Bluetooth master 330 in response to a data communication request of the Bluetooth master 330. Assigns an Internet IP address for Internet access and enables the Bluetooth master 330 to connect to the Internet 360.

According to a preferred embodiment of the present invention, the PDSN 349 determines whether the Bluetooth master 330 supports multiple PD-contexts, and if the Bluetooth master 330 supports multiple PD-contexts, the one or more Internet IP addresses are designated as Bluetooth. Assign to a cellular module of the master 330. In addition, the PDSN 349 according to the preferred embodiment of the present invention has a limited number of Internet IP addresses that can be allocated to the Bluetooth master 330 supporting multiple PD-contexts. Determine if the number of Internet IP addresses that can be exceeded.

5 is a diagram schematically illustrating a method for providing communication between a Bluetooth slave connected to a Bluetooth master and a communication between a Bluetooth slave connected to a Bluetooth master and a mobile communication network according to an exemplary embodiment of the present invention.

In the preferred embodiment of the present invention, for convenience of description, the Bluetooth slave 1311 of the Bluetooth slave 310 communicates with another Bluetooth slave 212 312 or the Bluetooth slave 1311 communicates with the mobile communication network 340. It is assumed that the connection to the Internet through the description.

First, the Bluetooth slave 310 attempts to establish a connection of the LAP level to configure the Bluetooth network with the Bluetooth master 330 (S510). At this time, the Bluetooth slave 310 attempts to set up PPP, and the Bluetooth master 330 receiving the PPP setting request allocates a master local IP address to itself and assigns a slave local IP address to the Bluetooth slave 310 while assigning the assigned IP. Create an IP address management table that stores addresses. Subsequently, the Bluetooth slave 1311 may request data communication to the specific IP address from the Bluetooth master 330 (S520). In this case, the specific IP address may be another Bluetooth slave 2 312 connected to the same Bluetooth network or a device (not shown) connected to another network.

Subsequently, the Bluetooth master 330 checks whether a specific IP address for which the Bluetooth slave 1311 is to communicate with data exists in the generated IP address management table (S530).

If the specific IP address for which the Bluetooth slave 1311 is to communicate with data does not exist in the IP address management table in step S530, the Bluetooth master 330 determines whether the Bluetooth slave 1311 requests a TCP connection or a UDP connection. (S533).

If it is determined in step S533 that the Bluetooth slave 1311 requests a TCP connection, the Bluetooth master 330 requests PPP establishment with the mobile communication network 340 through the cellular module included therein (S540). .

Subsequently, the PDSN 349 of the mobile communication network 340 determines whether the cellular module of the Bluetooth master 330 supports the multiple PDP-Context (S560).

If the cellular module of the Bluetooth master 330 supports multiple PD-contexts in step S560, the PDSN 349 of the mobile communication network 340 receives the cellular module of the Bluetooth master 330 from the PDSN 349. Since there is a limit to the number of Internet IP addresses that can be determined, it is determined whether the cellular module of the Bluetooth master 330 exceeds the maximum PD-context that can be supported (S570).

If, in step S570, the cellular module of the Bluetooth master 330 does not exceed the maximum PD-context value, the PDSN 349 of the mobile communication network 340 requests the Bluetooth master 330 to generate the PD-context. Allocates the Internet IP address to the master 330 (S580). At this time, the Internet IP address assigned to the Bluetooth master 330 by the PDSN 349 of the mobile communication network 340 is stored in the master cell row 4A of the IP address management table of the Bluetooth master 330. Subsequently, the Bluetooth slave 1311 becomes data communication with the mobile communication network 349 through the Bluetooth master 330 (S590).

If, in step S530, the specific IP address for which the Bluetooth slave 1311 is to communicate with data exists in the IP address management table, the Bluetooth master 330 is the specific IP for which the Bluetooth slave 1311 is to communicate with the data among the slaves 310. The Bluetooth slave having the address is found and relayed to enable data communication between the Bluetooth slaves (S535).

If it is determined in step S533 that the Bluetooth slave 1311 requests a UDP connection, the Bluetooth master 330 requests a PPP connection to the PDSN 349 of the mobile communication network 340 (S537). 311) and data communication between the mobile communication network 340 is enabled (S590).

If the cellular module of the Bluetooth master 330 does not support multiple PD-contexts in step S560, the PDSN 349 of the mobile communication network 340 may be configured to have a multiple TCP connection (Multiple TCP connection) of the cellular module of the Bluetooth master 330. It is determined whether a connection can be generated (S563).

If it is determined in step S563 that multiple TCP connections can be generated, the PDSN 349 of the mobile communication network 340 allocates an Internet IP address to the Bluetooth master 330 and the Bluetooth master 330 assigns an Internet IP address. Is stored in the IP address management table. Subsequently, the Bluetooth slave 1311 becomes data communication with the mobile communication network 340 (S590).

If it is determined in step S563 that multiple TCP connections are not possible, the Bluetooth master 330 notifies the Bluetooth slave 1311 that data communication with the mobile communication network 340 is impossible (S575).

If, in step S570, the cellular module of the Bluetooth master 330 exceeds the maximum PD-context value, the Bluetooth master 330 notifies the Bluetooth slave 1311 that data communication with the mobile communication network 340 is impossible. (S575).

FIG. 6 is a diagram schematically illustrating a data communication system between Bluetooth slaves through a Bluetooth master according to another exemplary embodiment of the present invention.

A system according to another preferred embodiment of the present invention includes a Bluetooth slave 610 and a Bluetooth master 630. Here, the Bluetooth slave 610 is composed of several Bluetooth slaves, and in another embodiment of the present invention, for convenience of description, the Bluetooth slave 1 611 communicates data with other Bluetooth slaves of the Bluetooth network via the Bluetooth master 630. It is assumed that the system is described.

Since the Bluetooth slave 610 according to another exemplary embodiment of the present invention is similar to the Bluetooth slave 310 described above, description thereof is omitted in other embodiments of the present invention.

According to another preferred embodiment of the present invention, the Bluetooth master 610 configures a Bluetooth network with the Bluetooth slave 610 and assigns a 'master local IP address' by setting itself as the master of the Bluetooth network when configuring the Bluetooth network. Assign a 'slave local IP address' to the Bluetooth slave 610. In addition, the Bluetooth master 630 according to another exemplary embodiment of the present invention generates an 'IP address management table' stored in the form of a 'master local IP address' and a 'slave local IP address' table to each Bluetooth slave 611. 612 provides a routing function to enable IP socket communication between the nodes.

7 is a diagram illustrating an IP address management table generated in a Bluetooth master according to another embodiment of the present invention.

Referring to FIG. 7, the IP address management table is a table for storing IP addresses assigned to the Bluetooth master and at least one or more Bluetooth slaves. In the IP address management table, the Bluetooth master row 7A indicates that the Bluetooth master 630 is a Bluetooth slave. When configuring the Bluetooth network with 610, it stores its IP which is the master of the Bluetooth network. In addition, the Bluetooth slave row 7B stores an IP address assigned by the Bluetooth master 630 to the Bluetooth slave 610 when configuring the Bluetooth network.

8 is a diagram schematically illustrating a method for providing data communication between Bluetooth slaves connected to a Bluetooth master according to another exemplary embodiment of the present invention.

First, the Bluetooth slave 610 attempts to establish a connection of the LAP level to configure the Bluetooth network with the Bluetooth master 630 (S810). At this time, the Bluetooth slave 610 attempts to configure PPP, and the Bluetooth master 630 receiving the PPP setting request allocates the master local IP address to itself and the slave local IP address to the Bluetooth slave 610 while assigning the assigned IP. Create an IP address management table that stores addresses. Subsequently, the Bluetooth slave 1 611 requests data communication to the specific IP address from the Bluetooth master 630 (S820). In this case, the specific IP address may be another Bluetooth slave connected to the same Bluetooth network or a device (not shown) connected to another network.

Subsequently, the Bluetooth master 630 checks whether a specific IP address for which the Bluetooth slave 1 611 intends to communicate with data exists in the generated IP address management table (S830).

If the specific IP address to which the Bluetooth slave 1 611 communicates with the data exists in the IP address management table in step S830, the Bluetooth master 630 may specify that the Bluetooth slave 1 611 is to communicate with the data among the Bluetooth slaves 610. The Bluetooth slave having the IP address is found and relayed to enable data communication between the Bluetooth slaves 310 (S845).

If the specific IP address to which the Bluetooth slave 1 611 communicates with the data does not exist in the IP address management table in step S830, the Bluetooth master 630 notifies the Bluetooth slave 1 611 that data communication is impossible (S870). ).

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, a Bluetooth slave generates an IP address management table by mapping and storing a local IP address assigned when the Bluetooth master configures a Bluetooth network and an Internet IP address allocated from a mobile communication network. Through the data communication with another Bluetooth slave or the Bluetooth slave has the effect of enabling data communication with the mobile communication network.

Claims (12)

A communication method for relaying between a Bluetooth device and a mobile communication network using an IP address management table in a system including at least one Bluetooth slave, a Bluetooth master, and a mobile communication network, (a) configuring a Bluetooth network with the Bluetooth slave and generating the IP address management table; (b) receiving a request for data communication with a specific IP address from a first Bluetooth slave; (c) determining whether the specific IP address exists in the IP address management table; (d) determining whether the first Bluetooth slave requests a Transmission Control Protocol (TCP) connection or a User Datagram Protocol (UDP) connection when the specific IP address does not exist in the IP address management table in step (c). step; (e) requesting a Point-To-Point Protocol (PPP) setting to the mobile communication network when it is determined in step (d) that the first Bluetooth slave requests the TCP connection; determining whether multiple PDP-Contexts are supported using the mobile communication network; (g) if it is determined in step (f) that the multiple PDP-context is supported, determining whether the PDP-Context maximum value is exceeded using the mobile communication network; And (h) if it is determined in step (g) not to exceed the PD-context, requesting the mobile communication network to generate the PD-context and assigning an Internet IP address to data communication between the first Bluetooth slave and the mobile communication network; Steps to provide Communication relay method between a Bluetooth device and a mobile communication network comprising a. The method of claim 1 wherein the method is (i) if it is determined in step (c) that the specific IP address exists in the IP address management table, a second Bluetooth slave matching the specific IP address is found in the IP address management table; And providing data communication with the second Bluetooth slave. The method of claim 1 wherein the method is (j) if it is determined in step (d) that the first Bluetooth slave requests the UDP connection, requesting the PPP setting to the mobile communication network and providing communication between the first Bluetooth slave and the mobile communication network; Communication relay method between the Bluetooth device and the mobile communication network further comprising. The method of claim 1 wherein the method is (k) if it is determined in step (f) that the multiple PD-contexts are not supported, (f1) determining whether a multiple TCP connection can be generated using the mobile communication network; (f2) If it is determined in step (f1) that the multiple TCP connection can be generated, the communication between the first Bluetooth slave and the mobile communication network is performed by storing the Internet IP address allocated by the mobile communication network in the IP address management table. Providing; And (f3) in the step (f1), if it is determined that the multiple TCP connection cannot be created, notifying the first Bluetooth slave that communication is impossible. Communication relay method between a Bluetooth device and a mobile communication network comprising a. The method of claim 1 wherein the method is and (l) informing the first Bluetooth slave that communication is impossible if it is determined in step (g) that the PD-context is exceeded. The method of claim 1, wherein the Bluetooth master Configure the Bluetooth slave and the Bluetooth network, and when configuring the Bluetooth network, set the Bluetooth master as the master of the Bluetooth network to allocate a master local IP address and assign a slave local IP address to the Bluetooth slave. Communication relay method between the Bluetooth device and the mobile communication network. The method of claim 6, wherein the Bluetooth master And a cellular module, wherein the PPP connection is possible to the mobile communication network by receiving the Internet IP address from the mobile communication network. The method of claim 7, wherein the Bluetooth master Generate an IP address management table including the master local IP address, the slave local IP address and the internet address, and use the IP address management table to perform data communication between the first Bluetooth slave and the second Bluetooth slave, And a routing function for providing communication between the mobile communication networks. Slave local IP address allocated to the Bluetooth slave constituting the Bluetooth network, master local IP address assigned by setting itself as the master of the Bluetooth network, and the IP address management table that stores the Internet IP addresses allocated from the mobile communication network in a table format. Bluetooth master to provide a routing function using; A Bluetooth slave configured to configure the Bluetooth network with the Bluetooth master and transmit a specific IP address to be communicated to the Bluetooth master to provide communication between another Bluetooth slave or a mobile communication network configuring the Bluetooth network through the Bluetooth master; And A mobile communication network that transmits and receives data wirelessly with the Bluetooth master and provides communication between the Bluetooth master and another network. Communication relay system between a Bluetooth device and a mobile communication network comprising a. 10. The method of claim 9, wherein the Bluetooth master And a cellular module, wherein the Internet IP address is allocated from the mobile communication network, so that a point-to-point protocol (PPP) connection is possible to the mobile communication network. 10. The method of claim 9, wherein the Bluetooth master And a specific IP address received from the Bluetooth slave in the IP address management table to relay communication with other Bluetooth slaves constituting the Bluetooth network. 10. The method of claim 9, wherein the Bluetooth master When the Bluetooth slave requests a connection with the mobile communication network, relays communication with the mobile communication network using the Internet IP address stored in the IP address management table.

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