KR100300339B1 - Broadband wired and wireless network connection device using PC - Google Patents

Abstract

The present invention relates to a broadband wired / wireless network connection, and in particular, a PC capable of providing a matching function and a broadband wired / wireless network matching function from a broadband wireless network (LMDS) to a broadband wired network (B-ISDN) through a PC. It relates to a broadband wired and wireless network connection device used.

The present invention provides a service by accessing a broadband wireless network and a broadband wired network, which are different kinds of communication services, through a broadband wired / wireless network matching board for a PC, and also provides a matching function from the corresponding broadband wireless network to a broadband wired network. The installation and maintenance cost of the equipment can be reduced, and the communication service can be provided by using the broadband wireless subscriber network even in the area where the line installation is difficult.

Description

Broadband wired and wireless network access device using PC

The present invention relates to a broadband wired / wireless network connection, and in particular, a PC capable of providing a matching function and a broadband wired / wireless network matching function from a broadband wireless network (LMDS) to a broadband wired network (B-ISDN) through a PC. It relates to a broadband wired and wireless network connection device used.

In the conventional broadband wired network connection device for a PC, as shown in FIG. 1, the PC bus interface unit 1 for interfacing data transmitted in the form of a PC bus and the data transmitted from the PC bus interface unit 1 are ATM. ATM / AAL processing unit 2 for converting ATM cells in the Asynchronous Transfer Mode (Asynchronous) layer and ATM Adherent Layer (AAL) layer type, and ATM cells transmitted from the corresponding ATM / AAL processing unit 2 into a frame of a broadband wired network connection type. A physical layer frame processing unit 3 for converting, a signal converting unit 4 for converting a frame transmitted from the physical layer frame processing unit 3 according to the characteristics of a physical signal, and signal information for returning an ATM cell form And a packet memory section 5 for storing packet data, ATM headers, data storage locations, and the like.

As described above, the conventional service subscriber is connected through a network access board embedded in the PC in order to receive data communication service from the B-ISDN, which is a broadband wired network using a PC. Let's look briefly.

First, the PC bus interface unit 1 in the network connection board is connected to a PC standard bus, for example, a PCI bus to allow a user to select a function other than the basic circuit of the PC to receive B-ISDN service. In order to interface the data transmitted in the form of a PC bus to the ATM / AAL processing unit 2, the corresponding ATM / AAL processing unit 2 stores a signal stored in the packet memory unit 5 to convert the transmitted data into an ATM cell form. VBR data such as information and packet data, and information such as a data storage location and an ATM header are read and returned in a corresponding ATM cell form.

Accordingly, the physical layer frame processing unit 3 converts the ATM cell type transmitted from the corresponding ATM / AAL processing unit 2 into a frame such as a B-ISDN connection type (STM-1, DS3, DS1E, ATM25M, XDSL), and the like. When transmitting to the signal conversion unit 4, the signal conversion unit 4 is converted to match the characteristics of the physical signal, that is, optical signal, ADSL signal, etc., and connected to the B-ISDN to receive the service.

As described above, in the conventional broadband network access device using a PC, a service subscriber is provided with a data communication service by connecting a broadband wired network through a PC network access board, since the B-ISDN network, which is the broadband wired network, is serviced only by wire. Enormous costs are used for laying and maintaining wired lines, and it is difficult to receive services because services are difficult to be provided in areas where lines are difficult to lay.

The present invention has been made in view of the above problems, and provides a service by accessing a broadband wireless network and a broadband wired network, which are different types of communication services, through a broadband broadband wired / wireless network matching board for a PC. By providing the matching function to the broadband wired network, the installation cost and maintenance cost of the wired line is reduced, and the corresponding communication service is provided by using the broadband wireless subscriber network even in an area where the line is difficult to install.

1 is a block diagram showing a conventional broadband wired network connection device for a PC.

2 is a schematic diagram of a broadband wired and wireless network service through a PC according to an embodiment of the present invention.

Figure 3 is a block diagram showing a broadband wireless / wireless network connection device for a PC according to an embodiment of the present invention.

4 is a block diagram illustrating a routing cell multiplexer illustrated in FIG. 3.

* Explanation of symbols for main parts of the drawings

11: PC bus interface unit, 12: ATM / AAL processing unit,

13: routing cell multiplexing unit, 13-1: routing cell memory unit

13-2: routing cell transformation and demultiplexer, 13-3, 13-4: FIFO,

13-5: ATM cell conversion and multiplexing unit, 14: TDM / TDMA unit,

15: variation part, 16: RF tuner,

17: packet memory unit, 18: physical layer frame processing unit,

19: signal conversion unit, 20: MWC

In order to achieve the above object, the present invention provides a PC bus interface unit for interfacing data in the form of a PC bus; An ATM / AAL processing unit for converting the PC bus type data into an ATM cell and converting the data into a routing cell, and converting the routing cell into an ATM cell and then converting the data into a PC bus type data; Send and receive ATM cell signals of a broadband wireless network and a broadband wired network in the form of a UTOPIA bus, convert ATM cells received from the broadband wireless network and the broadband wired network into routing cells according to a routing table for determining a transmission direction of the ATM cell, and A routing cell multiplexer which multiplexes the routing cells according to the transmission direction of the routing cells; A TDM / TDMA unit for time division multiplexing and time division multiple access for transmitting an ATM cell authorized from the routing cell multiplexer to a broadband wireless network;

An RF tuner for converting the IF signal received from the MWC into a baseband signal and converting the baseband signal into an IF signal; A modulator demodulating the data received from the TDM / TDMA unit and demodulating the signal received from the RF tuner; A physical layer frame processor for converting an ATM cell received from the routing cell multiplexer into a frame of a broadband wired network access state for transmission to a broadband wired network; And a signal converting unit converting the frame received from the physical layer frame processing unit to match the characteristics of the physical signal.

Furthermore, the routing cell multiplexing unit includes: a routing cell memory unit storing a routing table of an ATM cell for determining a transmission direction of an ATM cell received from the broadband wireless network and the broadband wired network; A first FIFO for temporarily storing the ATM cell when transmitting the ATM cell received from the UTOPIA bus back to the UTOPIA bus; The UTOPIA bus is controlled so that ATM cells are received from a broadband wireless network interface and a broadband wired network interface, the ATM cell is converted into a routing cell according to the routing table, and a routing cell for analyzing the header of the routing cell and transmitting the same to a PC bus. A routing cell conversion and demultiplexing unit for transmitting to the ATM / AAL processing unit and transmitting a routing cell to a UTOPIA bus to the first FIFO; A second FIFO for temporarily storing a routing cell received from the ATM / AAL processor; The routing cells stored in the first FIFO and the second FIFO are controlled to be output according to a priority, and the headers of the routing cells output from the first FFO and the second FIFO are analyzed to confirm the transmission direction of the routing cell, and the routing confirmed transmission. According to the direction characterized in that the ATM cell is provided with a multiplexing unit on a UTOPIA bus.

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

As shown in FIG. 2, the LMDS network and the B-ISDN access service configuration diagram through a PC according to an embodiment of the present invention provide services for the LMDS network and the B-ISDN network, which are different broadband wireless networks, through the PC. The LMDS network, which is the broadband wireless network, can be provided with the matching function from the broadband wired network to the B-ISDN.

The MWC 20 converts a microwave band signal transmitted and received between an LMDS network, which is a corresponding broadband wireless network, and a network access board, into an IF (Intermediate Frequency) signal in a microwave band.

Then, the broadband wired / wireless connection apparatus using a PC is authorized from the PC bus interface unit 11 and the PC bus interface unit 11 to interface data transmitted in the form of a PC bus, as shown in FIG. After converting PC bus-type data into ATM cells of AAL layer and ATNI layer, converting into cell and applying to routing cell multiplexer 13, routing cell received from routing cell multiplexer 13 is converted into ATNl cell. The ATM / AAL processing unit 12 converts the data of the PC bus type to the PC bus interface unit 11, and the signal information, LAN packet data, ATM header, A packet memory unit 17 for storing a data storage location, a routing table of a routing cell, and the like, and an ATM cell received from the routing cell multiplexer 13 for a B-ISDN network connection frame. A physical layer frame processing unit 18 for converting the data into a frame, a signal converting unit 19 for converting a frame received from the physical layer frame processing unit 18 according to characteristics of a physical signal, and an ATM cell of a broadband wireless network (LMDS). Transmits and receives signals in the form of Universal Test and Operation PHY Interface for ATM (UTOPlA) bus, converts received ATM cells into routing cells according to the routing table that determines the transmission direction of ATM cells, and routes cells according to the transmission direction of routing cells A routing cell multiplexer 13 for multiplexing the PDUs, a TDM / TDMA unit 14 for time division multiplexing and time division multiple access for transmitting and receiving ATM cells over a broadband wireless network, and forward error correcting, modulating and demodulating the transmitted data. The demodulation section 15 and the IF signal received from the MWC 20 are converted into a baseband signal and applied to the demodulation section 15, and the baseband signal received from the modulation demodulation section 15 is IF. And an RF tuner (Tuner) 6 for converting into an microwave signal used as a signal.

The routing cell multiplexer 13 UTOPIA the ATM cell received from the UTOPIA bus and the routing cell memory 13-1 storing the routing table of the ATM cell for determining the transmission direction of the received ATM cell. The UTOPIA bus is controlled to receive an ATM cell from a first FIFO 13-3 which temporarily stores an ATM cell when transmitting to the bus, and a broadband wireless network (LMDS) interface or a broadband wired network (B-ISDN) interface. The ATM cell is converted into a routing cell according to the routing table that determines the transmission direction of the ATM cell, and the routing cell to be transmitted to the PC bus by analyzing the header of the converted routing cell is transmitted to the ATM / AAL processing unit 12 and to the UTOPIA bus. The routing cell to be transmitted includes a routing cell conversion and demultiplexing unit 13-2 for controlling transmission to the first FIFO 13-3, and a cell for temporarily storing a routing cell type received from the ATM / AAL processing unit 12. 2 FIFO 13-4 and 1 FIFO 13-3 The routing cells stored in the 2FIFO 13-4 are controlled to be output according to the priority, and the contents of the headers provided in the routing cells output from the first FIFO 13-3 and the second FIFO 13-4 are analyzed. ATM cell that converts routing cell to ATM cell after confirming transmission direction to Broadband Wireless Network (LMDS) interface or Broadband Wired Network (B-IDSN) interface and transmits converted ATM cell to UTOPIA bus according to analyzed interface direction The conversion and multiplexer 13-5 is provided.

The operation of the present invention configured as described above will be described in detail with reference to the accompanying drawings.

First, referring to the data transmission operation for accessing a broadband wireless network or a broadband wired network through a PC, the PC bus interface unit 11 receives data that is applied in the form of a PC bus in order for a user to receive a service from the broadband wireless network or the broadband wired network. Is transmitted to the ATM / AAL processing unit 12 through the packet memory unit 17 to convert the PC bus type data received from the PC bus interface unit 11 from the ATM / AAL processing unit 12 into an ATM cell. Receives signal information, ATM header, data storage location, routing table information of routing cell, etc. and converts them into ATM cells, converts the converted ATM cells into routing cells, and transmits them to routing cell multiplexer 13.

Accordingly, the routing cell is temporarily stored in the second FIFO 13-4 in the routing cell multiplexer 13, and the corresponding routing cell is in the ATM cell conversion and multiplexer 13-5 in the routing cell multiplexer 13. After analyzing the headers to determine whether to transmit to a broadband wireless network or a broadband wired network, control to output the routing cells stored in the second FIFO (13-4) according to the priority, and convert the corresponding routing cells into standard ATM cells. After that, it transmits via UTOPIA bus.

In this case, when the corresponding ATM cell needs to be transmitted to the broadband wireless network, the ATM cell is adjusted to be transmitted to the time slot allocated through the TDM / TDMA unit 14 and transmitted to the modulator demodulator 15. After modulating the transmitted data, it is connected to a broadband wireless network through an antenna ANT through an RF tuner 16 that converts the IF signal into a service.

On the other hand, when the corresponding ATM cell is to be transmitted to the broadband wired network, the physical layer frame processing unit 18 converts the ATM cell transmitted from the routing cell multiplexer 13 into a frame of a B-ISDN network connection type that is a broadband wired network. The signal conversion unit 19 is transmitted.

Accordingly, the signal conversion unit 19 converts the frame transmitted from the physical layer frame processing unit 18 according to the characteristics of the physical signal and accesses the B-ISDN network to receive a service.

Meanwhile, referring to the operation of receiving data from the wireless broadband network in the PC, the MWC 20 processes the LMDS data in the PC network access board using the wireless signal of the microwave band received through the antenna ANT. If possible, the IF signal of the microwave band is converted and transmitted to the RF tuner 16, and the RF tuner 16 converts the IF signal received from the MWC 20 into a baseband signal and transmitted to the modulator demodulator 15. .

Accordingly, the modulation and demodulation unit 15 corrects the forward echo error, demodulates the signal, and transmits the demodulated signal to the TDM / TDMA unit 14.

Accordingly, the TDM / TDMA unit 14 transfers the data received in the TDM structure into an ATM cell in the form of a UTOPIA bus, and transmits the ATM cell to the routing cell multiplexer 13 in the form of a UTOPIA bus.

Accordingly, the routing cell free ring and demultiplexer 13-2 in the corresponding routing cell multiplexer 13 uses the routing table stored in the routing cell memory 13-1 to transfer the ATM cell transmitted from the UTOPIA bus. The transmission path information is inserted into the cell header to form a routing cell, and the corresponding routing cell header is analyzed to determine the transmission direction.

At this time, if a cell to be transmitted to the B-ISDN, which is a broadband wired network, by analyzing the transmission direction of the corresponding router cell header, the cell is temporarily stored in the first FIFO 13-3 and then transmitted to the ATM cell conversion and multiplexer 13-5. In the ATM cell conversion and multiplexer 13-5, the routing cell is converted into an ATM cell, and then connected to the B-ISDN network through the physical layer frame processing unit 18 and the signal conversion unit 19.

In addition, if the cell is transmitted to the ATM / AAL processing unit 12 by analyzing the transmission direction of the corresponding routing cell header, the cell is transmitted to the ATN1 / AAL processing unit 12. The ATM / AAL processing unit 12 transmits the routing cell in the form of AAL. After the conversion, the data is converted into PC bus data and transmitted to the PC bus through the PC bus interface unit 11 to control the interface with the user.

Meanwhile, referring to an operation of receiving data from a broadband wired network through a PC, whether the ATM cell received from the signal converter 19 and the physical layer frame processor 18 is transmitted from the routing cell multiplexer 13 to the PC bus or not. It is determined whether to transmit to the broadband wireless network.

At this time, when the ATM cell received from the broadband wired network is transmitted to the broadband wireless network, it is transmitted to the broadband wireless network through the TDM / TDMA unit 14 and the modulation / demodulation unit 15, and when transmitting to the PC bus, ATM / AAL. It is transmitted to the PC bus through the processing unit 12 and the PC bus interface 11.

As such, the present invention provides a service by accessing a broadband wireless network and a broadband wired network, which are different types of communication services, through a broadband wired / wireless network matching board for a PC, and also provides a matching function from the corresponding broadband wireless network to a broadband wired network. As a result, the installation cost and maintenance cost of the fixed line can be reduced, and the communication service can be provided using a broadband wireless subscriber network even in an area where the difficult line laying is difficult.

As described above, the present invention provides a service by accessing a broadband wireless network and a broadband wired network, which are different types of communication services, through a broadband wired / wireless network matching board for a PC, and also has a matching function from the broadband wireless network to the broadband wired network. By providing the wires, the installation cost and maintenance cost of the cable line is reduced, and even in the area where the line installation is difficult, it is possible to provide the corresponding communication service using the broadband wireless subscriber network.

Claims (2)

(Correction) a PC bus interface unit for interfacing data of the PC bus type; An ATM / AAL processing unit for converting the PC bus type data into an ATM cell and converting the data into a routing cell, converting the routing cell into an ATN1 cell, and then converting the data into a PC bus type data; Send and receive ATM cell signals of broadband wireless networks and broadband wired networks in the form of UTOPIA buses, convert ATM cells received from the broadband wireless networks and broadband wired networks into routing cells according to a routing table for determining the transmission direction of ATNl cells, and routing A routing cell multiplexer for multiplexing routing cells according to a cell transmission direction; A TDM / TDMA unit for time division multiplexing and time division multiple access for transmitting an ATM cell authorized from the routing cell multiplexer to a broadband wireless network; An RF tuner for converting the IF signal received from the MWC into a baseband signal and converting the baseband signal into an IF signal; A modulator demodulating the data received from the TDM / TDMA unit and demodulating the signal received from the RF tuner; A physical layer frame processing unit for converting an ATM cell received from the routing cell multiplexing unit into a frame of a broadband wired network connection for transmission to a broadband wired network; Broadband wired / wireless network connection device using a PC comprising a signal converter for converting the frame received from the physical layer frame processing unit to match the characteristics of the physical signal. (Correction) The apparatus of claim 1, wherein the routing cell multiplexing unit comprises: a routing cell memory unit storing a routing table of an ATM cell for determining a transmission direction of an ATM cell received from the broadband wireless network and a broadband wired network; A first FIFO for temporarily storing the ATM cell when transmitting the ATM cell received from the UTOPIA bus back to the UTOPIA bus; The UTOPIA bus is controlled so that ATM cells are received from a broadband wireless network interface and a broadband wired network interface, the ATM cell is converted into a routing cell according to the routing table, and a routing cell for analyzing the header of the routing cell and transmitting the same to a PC bus. A routing cell conversion and demultiplexing unit for transmitting to the ATM / AAL processing unit and transmitting a routing cell to a UTOPIA bus to the first FIFO; A second FIFO for temporarily storing a routing cell received from the ATM / AAL processor; The routing cells stored in the first and second FIFOs are controlled to be output according to priority, and the headers of the routing cells output from the first and second FIFOs are analyzed to confirm the transmission direction of the routing cells. An ATM cell conversion and multiplexing unit for converting into a cell and transmitting the ATM cell to a UTOPlA bus according to a confirmed transmission direction, comprising: a broadband wired / wireless network matching device using a PC.