KR100793585B1 - Network interface apparatus - Google Patents

Abstract

A network interface apparatus is provided to enhance data transmission efficiency without an additional network apparatus by using a PLC(Power Line Communication) network as a wired network and a UWB(Ultra Wide Band) as a wireless network. A network interface apparatus(100) includes a connection unit, an RF(Radio Frequency) processing unit, a wireless processing unit(130), a wired processing unit(110), and an interface unit(120). The connection unit is electrically connected to a wired network(20) to receive an analog signal. The RF processing unit transceives an RF signal through a wireless network(10), and processes transceiving signals. The wireless processing unit processes the processed transceiving signals in a baseband. The wired processing unit processes the analog signal in the baseband. The interface unit changes a communication standard so as to transmit data between the wireless processing unit and the wired processing unit, and is implemented in a processor of an ARM(Advanced RISC Machine).

Description

Network interface apparatus

1 is a perspective view illustrating the appearance of a network interface device according to an embodiment of the present invention.

2 is a diagram illustrating a form in which a network interface device according to an embodiment of the present invention is used inside a building.

3 is a block diagram schematically illustrating components of a network interface device according to an embodiment of the present invention.

4 is a block diagram schematically illustrating components of a PLC processing unit of a network interface device according to an embodiment of the present invention.

5 is a block diagram schematically illustrating components of a UWB baseband module provided in the UWB processing unit of the network interface device according to an embodiment of the present invention.

6 is a block diagram schematically illustrating components of an RF processing module provided in the UWB processing unit of the network interface device according to an embodiment of the present invention.

<Explanation of symbols for main parts of drawing>

100: network interface device 110: PLC processing unit

112: connection module 112a: plug

112b: Tx AFE 112c: PLC Coupler

112d: Rx AFE 114: PLC Baseband Module

114a: AD / DA converter 114b: MAC / PHY processing chip

120: interface unit 130: UWB processing unit

132: UWB baseband module 134: RF processing module

The present invention relates to a network interface device for controlling data transmission between a wired network and a wireless network.

At present, with the development of high-speed data transmission technology through a wireless channel, various electronic communication devices used for living are connected through a network and provide more convenient services.

For example, products that combine a mass storage means such as a HDD (Hard Disc Drive) or a DVD (Digital Versatile Disc) device with a multimedia content player are being released one after another. Digital TVs, hereinafter referred to as "D-TVs", digital TV set-top box systems, and PVRs (Private Video Recorders).

The digital broadcasting system includes a mass storage means, so that the digital broadcasting system can receive and play analog broadcasts and digital broadcasts, as well as receive and play signals transmitted from satellites, and digital broadcasts or analog audio / video (A / V). ; Audio / Video) It is expected to be widely used because it provides convenient functions such as saving the compressed digital signal stream on the HDD or playing back the signal stream stored on the HDD.

For example, if there are many multimedia contents devices such as digital broadcasting system in a general home or building, a central server such as a set-top box receives broadcast signals from a broadcasting center and transmits them to each D-TV. The D-TV located at can play a desired broadcast. At this time, a complicated line configuration is required to connect the set-top box and the plurality of D-TVs.

At this time, by connecting the communication devices located in the space (for example, the room) spaced apart using the wireless network technology as described above, it is possible to simplify the configuration of the line, but the communication space is separated and separated by a structure such as a wall If you need to re-establish your network in between, it's hard to apply current wireless network technology.

The wireless network technology, for example, may be a UWB (Ultra Wide Width) technology. The UWB technology may transmit data at a rate of about 40 Mbps. It can be configured as a network.

However, since UWB uses a high frequency band to transmit and receive signals at low outputs, communication is hindered if there is a radio wave obstacle such as a wall that is not open.

In addition, since UWB has a transmission distance of about 10m in order to achieve an optimal transmission and reception environment, in order to configure a communication device distributed in a wide space as a network, a complicated protocol such as setting a communication device performing a coordinator function must be installed. As data volume increases, it is difficult to implement and inefficient.

Accordingly, the shape of the network is affected according to the shape of the structure, and in case of connecting communication devices distributed in a wide space using a high speed wireless network, a conventional indoor network system is constructed by interworking a wired network and a wireless network to form an efficient network. There is a need to improve the problem.

In the present invention, when a network system is constructed by connecting communication devices distributed in various regions, a wired network is applied between spaced spaces, and a short-range wireless network is applied to spaced spaces to interwork with wired networks and wireless networks. It provides a network interface device to increase the performance of the network and to overcome physical constraints such as complicated line configuration.

In addition, the present invention in linking a wireless network and a wired network, by using a PLC (Power Line Communication) network as a wired network, UWB as a wireless network to increase the data transmission efficiency, but does not require additional network equipment Provides a network interface device.

In addition, the present invention provides a network interface device that can be easily used by a user without technical knowledge by acting as a data repeater just by plugging into a power line outlet when interlocking a PLC and a UWB.

The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network, the connection unit being electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit, and implemented by an ARM (Advanced RISC Machine) processor.
The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network. The network interface device is electrically connected to the wired network including a power line, and includes a coupler to connect an analog signal from the power line. ; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit.
The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network, the connection unit being electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processing unit processing the transmission / reception signal in a baseband region by a WiMedia (Wiress Multi-media) standard protocol; A wired processor configured to process the analog signal in a baseband region; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit.
The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network, the connection unit being electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region including a transmit / receive analog front end (AFE) module, an AD / DA conversion module, and a PHY / MAC processing module; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit.
The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network, the connection unit being electrically connected to the wired network to receive an analog signal; An RF processing unit including an RF transmission and reception module and an IF transmission and reception module, and transmitting and receiving an RF signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit.
The network interface device according to the embodiment relates to a network interface device for connecting a wired network and a wireless network, the connection unit being electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And an interface unit for converting a communication standard to transmit data between the wireless processing unit and the wired processing unit.
The connection part, the wired processing part and the interface part are packaged in one housing, the RF processing part and the wireless processing part are packaged in another housing,
The wired processor and the interface unit are electrically connected to the wireless processor through a connector, and the two housings are coupled through the connector.

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Hereinafter, a network interface device according to an exemplary embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view illustrating an external appearance of a network interface device 100 according to an embodiment of the present invention, and FIG. 2 is a form in which a network interface device 100 according to an embodiment of the present invention is used inside a building. Illustrated as an example.

Network interface device 100 according to the present invention is a device for processing data exchange between heterogeneous networks by connecting a wired network and a wireless network, in the embodiment of the present invention, the wired network is a PLC (Power Line Communication) network 20, The wireless network is assumed to be an ultra wide band (UWB) network 10.

However, the wireless network may be a communication network using another wireless protocol such as UWB, Bluetooth, or the like.

Referring to Figure 1, the network interface device 100 according to an embodiment of the present invention forms a plug, the housing is separated into two parts detachable.

The PLC processing unit 110 and the interface unit 120 are mounted in the front housing (hereinafter referred to as "first housing"), and the UWB processing unit (hereinafter referred to as "second housing") in the rear housing (hereinafter referred to as "first housing"). 130 is positioned, and at the end thereof, an antenna 134a for UWB wireless communication is located.

The interface unit 120 converts a communication standard between the PLC processing unit 110 and the UWB processing unit 130 to exchange data with each other, and all MAC / PHY interfaces of the UWB series can be processed. Details of the configuration and operation of these components will be described later with reference to FIGS. 3 to 6.

The first housing and the second housing are physically coupled through the connectors A and B, and the PLC processing unit 110 and the UWB processing unit 130 are also electrically connected through the connectors A and B.

In this way, the interface unit 120 is provided in the first housing, and the communication module mounted in the second housing enables various couplings between heterogeneous networks as other communication modules of the UWB series. This is because it is more efficient to be provided in the housing.

The plugs usually differ from country to country depending on factors such as whether the shape of the connection end inserted into the outlet socket is straight or round, the presence or absence of the connection end of the grounding role, and the arrangement of the female connection end of the socket. There are about 12 types of L types, and the plugs provided in the connection module (shown in FIG. 3) of the network interface device according to the present invention may be formed in any form.

The PLC is a technology capable of transmitting and receiving a control signal, a measurement signal, a monitoring signal, and the like through a power line without providing a separate control line or a transmission cable. The PLC processing unit 110 mounted in the first housing It is in charge of this transmission and reception function. That is, the PLC processing unit 110 performs a kind of modem function.

The PLC communication is performed in an area partitioned by a fuse box (commonly referred to as a "toad house") 30, and the PLC processing unit 110 connected to a power line configured inside the fuse box 30 has a 1: N multiplier. Communication can be performed.

Referring to Figure 2, the network interface device 100 according to an embodiment of the present invention can be seen installed in the building, the interior of the building is composed of a number of spaced apart / hermetically spaced, each space is commonly seen As can be seen, there are outlets connected by power lines.

In addition, each outlet has a network interface device 100 according to an embodiment of the present invention. The network interface device 100 constructs a UWB network 10 in a space that is spaced apart from each other. That is, the UWB networks are connected through the PLC network 20.

For example, the person "A" and the person "B" can communicate with each other while moving through the UWB network 10 in the space where they are located, and also communicate with several communication devices in the space.

On the other hand, when the "A" person and the "B" person communicates with each other, by using the PLC network 20, the "A" person and "B" person as if in the same space as the UWB network 10 It becomes available.

3 is a block diagram schematically illustrating components of a network interface device 100 according to an embodiment of the present invention.

Referring to FIG. 3, a network interface device according to an embodiment of the present invention includes a PLC processor 110, a UWB processor 130, and an interface unit 120. The PLC processor 110 may include a connection module 112. It includes a PLC baseband module 114, the UWB processing unit 130 comprises an RF processing module 134 and a UWB baseband module 132.

First, the PLC processing unit 110 of the network interface device 100 according to an embodiment of the present invention will be described with reference to FIG. 4.

4 is a block diagram schematically illustrating the components of the PLC processing unit 110 of the network interface device 100 according to an embodiment of the present invention.

Referring to FIG. 4, the PLC processing unit 110 includes a connection module 112 and a PLC baseband module 114. The connection module 112 includes a plug 112a and a transmission front end (AFE). 112b, a PLC coupler 112c, a reception AFE 112d, and the PLC baseband module 114 includes an AD / DA converter 114a and a MAC / PHY processing chip 114b.

The PLC coupler 112c is connected to the power line through the plug 112a, and extracts by coupling a communication analog signal transmitted together with the power supply analog signal or loads a signal processed therein as the power line.

The PLC coupler 112c may be implemented as a coupling capacitor or a directional coupler. For example, the coupling capacitor may be provided with a dielectric having a predetermined dielectric constant to extract an analog signal for communication from an analog signal for power supply. Alternatively, a communication analog signal can be loaded onto the power line.

In addition, when the PLC coupler 112c is implemented as a directional coupler, it may be implemented in the form of a waveguide having four ports. The input port and the pass port are connected to the power line line, and the output port is transmitted through a capacitor. 112b) and receiving AFE 112d. The isolation port is connected to the ground terminal through a resistor.

The PLC coupler 112c performs a function of filtering a noise component (for example, white noise) that may be introduced into a communication analog signal on a power line, in addition to combining or extracting a signal.

The transmission AFE 112b processes the signal transmitted from the PLC baseband module 114 as an analog signal and transmits the signal to the PLC coupler 112c. The reception AFE 112d receives the analog signal transmitted from the PLC coupler 112c. Process and transfer to the PLC baseband module 114.

The signals transmitted and received on the power line and the signals processed by the transmission AFE 112b or the reception AFE 112d are analog signals of different types, and require preprocessing to be processed in the baseband region through the AD / DA conversion process. This preprocessing is performed by the transmitting AFE 112b and the receiving AFE 112d.

Here, the AFE is a chip device that is distinguished from digital circuits such as a digital signal processor (DSP) and a field programmable gate array (FPGA), and uses signal analysis, synchronization processing, filtering, amplification, and phase synchronization circuits to transfer analog signals. Circuits for processing such as mixing of the intermediate frequency signal are integrated.

The AD / DA converter 114a of the PLC baseband module 114 converts the analog signal converted into the intermediate frequency signal into a digital signal or converts the digital signal transferred from the MAC / PHY processing chip 114b into an analog signal. Transfer to the connection module 112.

As the AD / DA converter 114a, for example, a product such as "AD9975MxFE" may be used.

The MAC / PHY processing chip 114b processes a digital signal in a baseband region. In general, the MAC layer is divided into a “hardware MAC” and a “software MAC”, and the MAC / PHY processing chip 114b is a “hardware”. Handles the protocol of the MAC "layer.

Data processing of a layer above the hardware MAC layer, that is, a software MAC layer, a network layer, a framework layer, and an application layer is performed at an upper layer of the baseband region, and is processed by a processor mounted in a terminal receiving data.

The MAC / PHY processing chip 114b is connected to the UWB baseband module 132 to exchange digital signals processed in the baseband region, and the interface unit 120 controls data exchange.

The MAC / PHY processing chip 114b analyzes the data frame structure in the baseband region to approve the frame, detects an error, and processes the modulation / demodulation of the signal. For example, the MAC / PHY processing chip 114b may be provided as a chip such as “XPLC21”, and may be connected to a memory such as an EEPROM through a SPI (Serial Port Interface) port and may store signal processing data in the memory. .

In an embodiment of the present invention, the interface unit 120 is implemented as an ARM (Advanced RISC Machine) 9 processor capable of being mounted on multiple chips as a 32-bit RICS core, and is mounted on the MAC / PHY processing chip 114b It is configured in the housing.

The interface unit 120 implemented by ARM9 includes a 32-bit Booth's multiplier, an instruction decoder, an address register with an incrementer, a 32-bit data bus, a 32-bit address bus, and an ALU. An endian mode function and a FAST interrupt function (interrupt processing) It is possible to quickly control the data transfer between PLC network and UWB network in the baseband area by reducing the time for storing and restoring registers in the routine.

Accordingly, the interface unit 120 is also connected to the UWB baseband module 132 together with the MAC / PHY processing chip 114b to detect a signal and transmit various control signals to perform a control operation.

Hereinafter, the components of the UWB baseband module 132 will be described, and the interworking relationship between the MAC / PHY processing chip 114b, the interface unit 120, and the UWB baseband module 132 will be described.

5 is a block diagram schematically illustrating the components of the UWB baseband module 132 provided in the UWB processing unit 130 of the network interface device 100 according to an embodiment of the present invention.

Referring to FIG. 5, the UWB baseband module 132 includes a multi-band OFDM alliance (MBOA) interface (I / F) 132g, a BBP control logic 132n, and an AFE control logic connected to a Tx path and an Rx path. 132o, wherein the Rx path includes an AD converter 132a, a first Time Domain Processor (TDP) 132b, a Fast Fouriour Transform (FFT) 132c, and a First Frequency Domain Processor (FDP) 132d. And a first quadrature phase shift keying (QPSK) 132e and a first baseband processor (132f) 132f, and the Tx path is a DA converter 132m, a second TDP 132l, an inverse FFT (IFFT) 132k, A second FDP 132j, a second QPSK 132i, and a second BBP 132h.

First, the MBOA interface 132g is connected to the MAC / PHY processing chip 114b to exchange data. At this time, the interface unit 120 performs an interface conversion function from the ARM9 process of the PLC network 20 to the WiMedia process. do.

The "WiMedia Alliance" is a standardization forum for Wireless Personal Area Networks (WPANs), and provides data conversion standards based on the IEEE802.15.3 standard, which covers the technical standards of Ultra Wide Band (UWB).

When the interface unit 120 converts data from a PLC standard to a UWB standard or vice versa, and provides a control signal to the MBOA interface 132g and the MAC / PHY processing chip 114b, the MBOA interface 132g The MAC / PHY processing chip 114b is synchronized to transfer signals to each other.

The UWB baseband module 132 processes a signal converted into a UWB standard and is a symbolized signal by using an orthogonal frequency division multiplexing (OFDM) modulation scheme. The UWB baseband module 132 includes a time division technique, a frequency division technique, and a space. Signal specifications are defined according to segmentation techniques, symbolization, data frame configurations, and the like.

In addition, the UWB baseband module 132 may also use a QPSK modulation scheme.

The QPSK modulation scheme is a form of phase shift keying, in which two bits are modulated at once so that four possible carrier phase shifts (0, 90, 180 or 270 degrees) are selected. Using QPSK, the average PSK can transmit twice the amount of information transmitted using the same bandwidth.

The MBOA interface 132g analyzes the frame structure of the processed data in the baseband region to approve the frame, detects an error (detects it via CRC or Checksum), and determines whether to retransmit the packet. Handle routing.

Similar to the foregoing, the MBOA interface 132g is a component that handles the initial hardware network connections on the UWB hierarchy, and includes beacons and time-to-arranged time slots (GTS) for collisions and delays. It provides a related additional frame structure and handles channel access in a carrier sense multiple access with collision avoidance (CSMA-CA) scheme.

The Rx path connected to the MBOA interface 132g will be described below.

The AD converter 132a converts the intermediate frequency signal in the analog signal state from the RF processing module 134 into a digital signal, and the first TDP 132b is a frame synch and a symbol synch. Process the signal in the time domain as

The FFT 132c converts a signal expressed in the time domain into a signal in the frequency domain, and the first FDP 132d processes the converted signal in the frequency domain.

The first QPSK 132e multiplexes the signal by shifting the phase, and the first BBP 132f converts the multiplexed signal into a UWB signal standard that can be processed by the MBOA interface 132g and sequentially delivers the signal.

The DA converter 132m, the second TDP 132l, the IFFT 132k, the second FDP 132j, the second QPSK 132i, and the second BBP 132h constituting the Tx path reverse the operation of the components of the Tx path described above. As the components to be performed as, the function is similar, detailed description thereof will be omitted.

The OFDM signal processed in the Tx path and the Rx path is composed of k test frames (TF), and the test frame is composed of N time slots (TS). These are time-division signals to form a predetermined unit time.

The test frame forms a unit time of about 1 second in the embodiment of the present invention, and the start time and the clock are synchronized to carry the UWB data.

The time slot is composed of a single OFDM symbol, and the OFDM unit symbol corresponds to one UWB data.

The BBP control logic 132n transmits a control signal to sequentially process signals by performing a series of operations of the MBOA interface 132g, the Rx path, and the Tx path, and are connected to the interface unit 120 to control the overall PLC. The baseband module 114 may be operated as one baseband stage.

The AFE control logic 132o transmits a control signal to the RF processing module 134 so that a signal between the RF processing module 134 and the UWB baseband module 132 is accumulated or lost without being lost.

Table 1 described below describes representative signals transmitted and received between the MBOA interface 132g, the MAC / PHY processing chip 114b and the interface unit 120.

Data name Sender Destination PLCK MBOA Interface (132g) MAC / PHY Processing Chip (114b) DATA_EN MBOA Interface (132g) MAC / PHY Processing Chip (114b) DATA_ [7: 0] Bidirectional Bidirectional PHY_RESET MAC / PHY Processing Chip (114b) MBOA Interface (132g) Tx_EN MAC / PHY Processing Chip (114b) MBOA Interface (132g) Rx_EN MAC / PHY Processing Chip (114b) MBOA Interface (132g) PHY_ACTIVE MBOA Interface (132g) MAC / PHY Processing Chip (114b) STOPC MAC / PHY Processing Chip (114b) MBOA Interface (132g) CCA_STATUS MBOA interface (132g0 MAC / PHY Processing Chip (114b) SDATA Bidirectional Bidirectional BBP_Mode BBP Control Logic (132n) Interface unit 120

The signals are briefly described as follows.

First, the "PLCK" refers to a 66 MHz interface clock signal provided from the MBOA interface 132g. Second, the "DATA_EN" refers to an active signal synchronized with the "PLCK" signal. Third, the "DATA_ [7] : 0] "means an 8-bit bidirectional data bus provided between the MBOA interface 132g and the MAC / PHY processing chip 114b.

Fourth, the "PHY_RESET" is a signal that is activated in the log signal to initialize the operation of the MBOA interface 132g, and fifth, the "Tx_EN" is synchronized with the "PLCK" from the MBOA interface (132g) MAC / PHY processing chip 114b Is a signal for activating the transmission state from the MAC / PHY processing chip 114b to the MBOA interface 132g in synchronization with the " PLCK. &Quot;

Seventh, the "PHY_ACTIVE" is a signal used to inform the MAC / PHY processing chip 114b when the UWB network 10 is used, eighth, the "STOPC" is an asynchronous signal that "PLCK" is a standby mode In this case, the signal provides an on / off switching function. Ninth, the "CCA_STATUS" is a synchronization signal and means a signal returned to the MBOA interface 132g after a CCA request when there is a transmission error.

Tenth, the "SDATA" is a bidirectional synchronization signal, a signal for register access, eleventh, the "BBP_Mode" is a signal defining a pin used for the test mode, monitoring mode, data transmission mode and the like.

6 is a block diagram schematically illustrating the components of the RF processing module 134 included in the UWB processing unit 130 of the network interface device 100 according to an embodiment of the present invention.

Referring to FIG. 6, the RF processing module 134 includes an antenna 134a, a band definition filter (BDF) 134b, a signal separator 134c, a low noise amplifier (LNA) 134d, and a first filter 134e. , First mixer 134f, second filter 134g, third filter 134i, first power amplifier (134h), second PA (134j), phase locked loop (134k), IQ generator 134l, fourth filter 134m, PAM (Power Amplifier Module) 134n, second mixer 134o, fifth filter 134p, sixth filter 134r and third PA 134q, fourth PA 134s.

The antenna 134a transmits and receives a signal with an external UWB communication device, and is located at the end of the plug-shaped housing as shown in FIG. 1.

The BDF 134b filters only signals in the UWB frequency band, and the signal separator 134c is provided as an element such as a duplexer or a diplexer and separates and transmits and receives signals.

The LNA 134d suppresses and amplifies the low noise component of the received signal, and the first filter 134e blocks the signal of the unwanted wave component introduced during the low noise amplification.

The first mixer 134f generates a signal of the intermediate frequency band by the oscillation signal provided from the PLL 134k, and the signal of the intermediate frequency band is the I signal having the phase difference by the IQ generator 134l and Q. Separated by signal.

The separated I and Q signals are transmitted to the UWB baseband module 132 through the second filter 134g, the first PA 134h, the third filter 134i, and the second PA 134j, respectively.

On the other hand, the analog signal transmitted from the UWB baseband module 132 in the state of the I signal and the Q signal is the third PA (134q), the fifth filter (134p), the fourth PA (134s) and the sixth filter (134r), respectively. After passing through the second mixer 134o, it is synthesized into one intermediate frequency signal by the IQ generator 134l.

The synthesized intermediate frequency signal is converted into an RF signal by the second mixer 134o, and the converted signal is amplified into a signal of a size that can be transmitted by the PAM 134n.

The fourth filter 134m filters the signal of the noise component introduced during amplification, and the filtered signal is transmitted through the signal separator 134c, the BDF 134b, and the antenna 134a.

The filters 134e, 134g, 134i, 134p, 134r, and 134m may be provided as SAW filters.

Although the present invention has been described above with reference to the embodiments, these are only examples and are not intended to limit the present invention, and those skilled in the art to which the present invention pertains may have an abnormality within the scope not departing from the essential characteristics of the present invention. It will be appreciated that various modifications and applications are not illustrated. For example, each component specifically shown in the embodiment of the present invention can be modified. And differences relating to such modifications and applications will have to be construed as being included in the scope of the invention defined in the appended claims.

According to the network interface device according to the present invention, by linking a wired network, such as a PLC and a wireless network, such as UWB, there is no need to complicate the line, improve data transmission efficiency, and extend the network construction distance to the whole building It can be effected.

In addition, according to the network interface device according to the present invention, it is possible to use the existing power line without excluding the physical line configuration as much as possible to save the transmission power, it is difficult to communicate only by wireless channels such as large ships, airplanes as well as buildings It is easy to build a network even in an environment.

In addition, according to the network interface device according to the present invention, in the case of using the power line communication, it can be easily plugged into a plug type, and is convenient, and each module for processing a wired network and a wireless network is electrically and mechanically detachable. There is an effect that the network can be configured by combining the wired network module and the wireless network module.

Claims (17)

In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And Converting a communication standard so that data is transferred between the wireless processing unit and the wired processing unit, Network interface device including an interface unit implemented by an ARM (Advanced RISC Machine) series of processors. In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network including a power line, and including a coupler to extract an analog signal from the power line; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And And an interface unit for converting a communication standard to transfer data between the wireless processing unit and the wired processing unit. In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processing unit processing the transmission / reception signal in a baseband region by a WiMedia (Wiress Multi-media) standard protocol; A wired processor configured to process the analog signal in a baseband region; And And an interface unit for converting a communication standard to transfer data between the wireless processing unit and the wired processing unit. In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region including a transmit / receive analog front end (AFE) module, an AD / DA conversion module, and a PHY / MAC processing module; And And an interface unit for converting a communication standard to transfer data between the wireless processing unit and the wired processing unit. In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network to receive an analog signal; An RF processing unit including an RF transmission and reception module and an IF transmission and reception module, and transmitting and receiving an RF signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And And an interface unit for converting a communication standard to transfer data between the wireless processing unit and the wired processing unit. In the network interface device for connecting a wired network and a wireless network, A connection part electrically connected to the wired network to receive an analog signal; An RF processor for transmitting and receiving an RF signal and processing a transmitted and received signal through the wireless network; A wireless processor which processes the processed transmit / receive signal in a baseband region; A wired processor configured to process the analog signal in a baseband region; And An interface unit for converting a communication standard to transfer data between the wireless processing unit and the wired processing unit; The connection part, the wired processing part and the interface part are packaged in one housing, the RF processing part and the wireless processing part are packaged in another housing, The wired processor and the interface unit are electrically connected to the wireless processor through a connector, and the two housings are coupled through the connector. The wired network according to any one of claims 1 to 6, wherein the wired network is Network interface device, characterized in that the PLC (Power Line Communication) network. The wireless network of any one of claims 1 to 6, wherein the wireless network Network interface device, characterized in that the communication network of any one of UWB (Ultra Wide Band), Bluetooth. The said connecting part of any one of Claims 1-6. A network interface device, characterized in that the plug form detachable from the power line outlet. The interface unit according to any one of claims 2 to 6, wherein the interface unit Network interface device, characterized in that implemented in the ARM (Advanced RISC Machine) series of processors. The method according to any one of claims 1 and 3 to 6, The wired network includes a power line, The connection unit includes a coupler (Coupler) to extract the analog signal from the power line. The wireless processor of any one of claims 1, 2, and 4 to 6, wherein the radio processing unit The network interface device, characterized in that for processing the transmission and reception signals according to the WiMedia (Wiress Multi-media) standard protocol. According to any one of claims 1 to 3, 5, 6, wherein the streamline processing unit Network interface device comprising a transmission and reception AFE (Analog Front End) module, AD / DA conversion module and PHY / MAC processing module. According to any one of claims 1 to 4, 6, wherein the RF processing unit A network interface device comprising an RF transmission and reception module and an IF transmission and reception module. The wireless processing unit of claim 1, wherein the wireless processing unit And converting the transmission / reception signal into an OFDM signal and processing the same. The wireless processing unit of claim 1, wherein the wireless processing unit And processing the transmitted / received signal through a QPSK modulation scheme. The method according to any one of claims 1 to 5, The connection part, the wired processing part and the interface part are packaged in one housing, The RF processor and the wireless processor is packaged in the other housing, The wired processing unit and the interface unit is electrically connected to the wireless processing unit through a connector, wherein the two housings are coupled via the connector.

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