KR100592598B1 - UWB-based Wireless Bridge - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to an ultra wideband wireless bridge device.

2. The technical problem to be solved by the invention

The present invention converts wired serial data into an ultra wide band (UWB) signal that guarantees QoS (Quality of Service (QoS)), and wirelessly transmits the signal. The inverse conversion of the ultra wide band (UWB) signal to wired serial data is performed. The purpose of the present invention is to provide an ultra wideband (UWB) type wireless bridge device.

3. Summary of the Solution of the Invention

The present invention relates to an ultra-wideband (UWB) type wireless bridge device, wherein the physical layer signal received from a serial bus device connected by wire is encoded into link layer data, and the link layer data received from the protocol conversion means is physically encoded. Physical layer processing means for decoding the layer signal; The link layer data received from the physical layer processing means is separated into isochronous data and asynchronous data to perform path setting and synchronization functions, and the separated isochronous data and asynchronous data are multiplexed into protocol adaptation layer (PAL) data. Converts the medium access control data, converts the medium access control data received from the ultra wideband signal transmission / reception means into PAL data, and classifies it into isochronous data and asynchronous data to perform the path setting and synchronization function Said protocol conversion means for multiplexing one isochronous data and asynchronous data into link layer data; The second to convert the medium access control data received from the protocol conversion means into an ultra wide band (UWB) signal and to transmit the same through an antenna, and to convert the ultra wide band (UWB) signal received through the antenna into media access control data. Wideband signal transmission and reception means; And control means for controlling and managing said physical layer processing means, said protocol conversion means, and said ultra-wideband signal transmission and reception means.

4. Important uses of the invention

The present invention is used in a wireless bridge device and the like.

Short Range Personal Area Wireless Network System, UWB (Ultra Wideband), IEEE 1394, Wireless Bridge Device

Description

Ultra-Wideband Wireless Bridge Device {UWB-based Wireless Bridge}             

1 is a configuration diagram of an embodiment of a short-range personal area wireless network system to which the present invention is applied;

2 is a configuration diagram of an embodiment of an ultra wide band (UWB) wireless bridge device according to the present invention;

3 is a detailed configuration diagram of an embodiment of the IEEE 802.15.3 media access control unit according to the present invention;

Figure 4 is a detailed configuration of an embodiment of an ultra-wideband (UWB) transceiver according to the present invention.

5 is a structural diagram of an embodiment of an IEEE 802.15.3 piconet superframe used in the present invention;

6 is a structural diagram of an embodiment of an IEEE 802.15.3 MSDU frame used in the present invention;

7 is a structural diagram of an embodiment of an IEEE 802.15.3 MPDU frame used in the present invention.

* Explanation of symbols on the main parts of the drawing

11: IEEE 1394 device 12: UWB type wireless 1394 bridge device

13: UWB method piconet coordinator 21: IEEE 1394 physical layer unit

22: IEEE 1394 link layer unit 23a: first transaction unit

23b: second transaction part 24: high performance serial bus bridge

25: IEEE 802.15.3 protocol adaptation layer unit

26: IEEE 802.15.3 media access control unit 27: UWB transceiver

28 antenna 29 control unit

30: protocol conversion unit

The present invention relates to an ultra wideband (UWB) type wireless bridge device, and more particularly, to ultra-wideband (UWB: Ultra), in which wired serial data such as wired IEEE 1394 data is guaranteed. The present invention relates to an ultra wideband (UWB) type wireless bridge device for converting into a wide band signal for wireless transmission and inversely converting an ultra wideband (UWB) signal into wired serial data.

In the following example, a wireless bridge for IEEE 1394 will be described as an example.

Enhanced Integrated Drive Electronics (EIDE), a commonly used peripheral interface now, is slow and has many scalability limitations. On the other hand, the SCSI (SCSI) method is excellent in scalability but relatively expensive, and protocols and drivers are slightly different from one vendor to another, and in theory, it can be easily extended. There is a lot of difficulty to expand. IEEE 1394 is a new standard designed to address these shortcomings and to connect peripherals (especially high-speed peripherals) with a single cable.

IEEE 1394 is a new serial bus interface standard jointly proposed by Apple and Texas Instruments (TI), developed under the code name "FireWire", and was adopted by the American Institute of Electrical and Electronics Engineers (IEEE) in December 1995. Formally agreed and standardized. With IEEE 1394, you can connect peripherals (especially high-speed peripherals) with a single cable for convenient use.

On the other hand, these days we often carry various electronic devices (laptops, computers, mobile phones, personal digital assistants, MP3 players, etc.). However, connecting these devices by wire is very cumbersome, and because the applications are also not compatible with each other, it is impossible to link them together. A technology that forms a wireless network between such personal devices to eliminate wired cables between devices and enables information exchange between applications is called wireless personal area networks (WPANs).

Local Area Network (WPAN) is an ad hoc data communication system that allows multiple devices to communicate with each other. Its purpose is to convey information between relatively few users within a relatively short distance (10m radius). have. In addition, short-range personal area wireless networks (WPANs) have little to do with infrastructure, so a variety of devices (personal computers, portable computers, personal digital assistants (PDAs), printers, microphones, speakers, headsets, barcode readers, sensors, display devices, It is a cheap and power efficient technology that can be implemented in mobile communication terminals. Such short-range wireless personal area networks (WPANs) can be effectively implemented using an ultra wideband (UWB) communication scheme.

Ultra WideBand (UWB) communication has been applied to defense-related communication systems and radars that require security since the 1950s. In the 1990s, various UWB communication methods have been tried to apply to commercial communication systems. As a result, in February 2002, the UWB communication scheme was used in the frequency band of 3.1 GHz or higher by the Federal Communications Commission (FCC). A license to use the UWB communication method has been obtained, and many companies and schools are actively researching the UWB communication method for commercial systems. As a result of these efforts, standardization of ultra-wideband (UWB) communications is being actively carried out through the 802.15.3 working group under IEEE, a group mainly responsible for standardizing wireless personal communication.

Ultra WideBand (UWB) communication is generally broadband with a bandwidth of more than 25% of the center frequency.UWB, unlike most conventional wireless technologies, is transmitted after carrier modulation. In a communication system, carriers are not used. Therefore, the carrier frequency and phase recovery procedures required in the conventional narrowband communication scheme are not required, and thus wireless communication can be implemented more simply. In addition, the UWB communication method has the advantage of sharing the frequency band already occupied and used, and is relatively inexpensive because the frequency shifting process is unnecessary in the transmitter / receiver unlike the conventional narrowband communication method. It is expected that a communication system can be implemented at a cost. In addition, it has the advantage of securing the desired transmission speed and transmission distance with relatively low power consumption, and is considered as a suitable method for a system supporting high data rate. Therefore, the UWB communication method is expected to be used in the next generation wireless personal communication method requiring near field high speed due to these advantages.

In order to include not only a wirelessly connected peripheral device but also a peripheral device connected by wire using IEEE 1394 in a personal area wireless network (WPAN), IEEE 1394 data (wired) is converted into a wireless signal (or a wireless signal is IEEE 1394 data). A wireless bridge device is needed for the conversion. In this case, the general bridge device is a hardware device for transmitting a packet signal based on the MAC address of the network, and serves to connect two LANs using the same protocol.

However, conventionally, a wireless 1394 bridge device of the IEEE 802.11b method is mainly used as a device for converting IEEE 1394 data (wired) into a wireless signal. However, the conventional IEEE 802.11b wireless 1394 bridge device is very slow because it provides a maximum transmission speed of 11 Mbps in the 2.4 GHz band, real-time isochronous audio / video (A / V) There was a problem of being unsuitable for transmitting data.

Therefore, an ultra-wideband (UWB) type wireless bridge device that can secure a desired transmission speed and transmission distance with relatively low power consumption and can support a high data rate is urgently needed.

The present invention has been proposed to solve the above problems, and converts wired serial data into an ultra wide band (UWB) signal that guarantees Quality of Service (QoS) and wirelessly transmits the data. An object of the present invention is to provide an ultra wideband (UWB) type wireless bridge device for inverting and providing a wideband (UWB) signal to wired serial data.

That is, the present invention converts wired serial data, such as wired IEEE 1394 data, into an ultra wide band (UWB) signal that guarantees Quality of Service (QoS), and 110-480 Mbps in the 3.1-10.6 GHz band. An object of the present invention is to provide an ultra wideband (UWB) type wireless bridge device for wirelessly transmitting at a transmission rate of and transmitting the ultra wideband (UWB) signal to inverted wired IEEE 1394 data.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The present invention for achieving the above object is, in the ultra-wideband (UWB) type wireless bridge device, the physical layer signal received from the serial bus device connected by wire to the link layer data to encode the link layer data from the protocol conversion means Physical layer processing means for decoding the received link layer data into a physical layer signal; The link layer data received from the physical layer processing means is separated into isochronous data and asynchronous data to perform path setting and synchronization functions, and the separated isochronous data and asynchronous data are multiplexed into protocol adaptation layer (PAL) data. Converts the medium access control data, converts the medium access control data received from the ultra wideband signal transmission / reception means into PAL data, and classifies it into isochronous data and asynchronous data to perform the path setting and synchronization function Said protocol conversion means for multiplexing one isochronous data and asynchronous data into link layer data; The second to convert the medium access control data received from the protocol conversion means into an ultra wide band (UWB) signal and to transmit the same through an antenna, and to convert the ultra wide band (UWB) signal received through the antenna into media access control data. Wideband signal transmission and reception means; And control means for controlling and managing the physical layer processing means, the protocol conversion means, and the ultra-wideband signal transmission and reception means.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

According to the present invention, an ultra wideband (UWB) baseband pulse transceiver is used for a very fast wireless transmission rate of 110 to 480 Mbps, and a medium access control (MAC) of IEEE 802.15.3 is used. Thus, the QoS is guaranteed to provide an ultra wideband (UWB) type wireless bridge device capable of transmitting not only asynchronous data but also real-time isochronous audio / video (A / V: Audio Video) data.

1 is a block diagram of an embodiment of a short-range personal area wireless network system to which the present invention is applied.

As shown in FIG. 1, a short-range personal area wireless network system to which the present invention is applied includes an ultra-wideband piconet coordinator 13, an ultra-wideband (UWB) wireless 1394 bridge device 12, and a plurality of IEEE 1394 devices ( 11).

In this case, the IEEE 1394 device 11 is a digital home appliance such as a digital camcorder, an HDTV, a home theater, a personal computer (PC) having an IEEE 1394 port, and uses an IEEE 1394 bus. It is connected to a wireless 1394 bridge device 12 to provide a function of transmitting asynchronous data as well as real-time isochronous audio / video (A / V) data at a high transmission speed of 100 Mbps to 3.2 Gbps.

In addition, the ultra-wideband (UWB) wireless 1394 bridge device 12 is wired to the IEEE 1394 device 11, the external ultra-wideband (UWB) piconet coordinator 13 and other ultra-wideband (UWB) wireless Transmit and receive ultra wideband signals with 1394 bridge devices. That is, the ultra wideband (UWB) type wireless 1394 bridge device 12 performs a function of converting IEEE 1394 data from the IEEE 1394 device 11 into a dual band type ultra wideband (UWB) signal, Inversely converts a dual band (UWB) signal of a dual band method into IEEE 1394 data.

Meanwhile, the UWB-type Piconet Coordinator 13 performs a coordinator and scheduler function of a WPAN (Wireless Personal Area Network). A local area network (WPAN) begins with the connection of two or more devices (devices), namely the formation of piconets. At this time, when a piconet is formed, any device (device) belonging to the piconet becomes a piconet coordinator (PNC) to provide basic timing and control quality of service (QoS) requirements. The wideband (UWB) type piconet coordinator 13 is a device (apparatus) responsible for this function.

Ultra-Wideband (UWB) Piconet Coordinator (13) generates an IEEE 802.15.3 Piconet superframe as shown in FIG. 5 to generate a UWB-based wireless 1394 bridge device 12 or other ultra-wideband (UWB) Device provides basic network synchronization time, establishes connection based on preset Quality of Service (QoS) policy and channel time (CT) resource for data transmission, and Piconet Network resource allocation and power save mode management function are performed.

Meanwhile, the IEEE 802.15.3 based network to which the present invention is applied is not based on an access point (AP), but is basically based on an ad hoc network. IEEE 802.15.3 adopts Time Division Multiple Access (TDMA) as a medium access control (MAC) method and embeds a medium access control (MAC) frame in a temporal arrangement structure called a "super frame." It is. That is, as shown in FIG. 5, the superframe includes a beacon in which control information is described, a contention access period (CAP) in which random access control is performed, and a channel time allocation section in which data is stored ( It consists of three types of blocks called CTAP: Channel Time Allocation Period.

In the following description, an operation of the ultra wide band (UWB) wireless 1394 bridge device 12 according to the present invention will be described in more detail with reference to FIG. 2.

2 is a configuration diagram of an ultra wide band (UWB) wireless 1394 bridge device according to an embodiment of the present invention.

As shown in FIG. 2, the wireless bridge device of the ultra wide band (UWB) system according to the present invention includes an IEEE 1394 physical layer unit 21, a protocol converter 30, and an ultra wide band (UWB) transceiver 27. And a control unit 29.

The IEEE 1394 physical layer unit 21 performs a function of transmitting and receiving an IEEE 1394 signal from an IEEE 1394 device connected by an IEEE 1394 bus, and encodes and decodes IEEE 1394 link data of 100 Mbps to 3.2 Gbps. Decoding is performed and Bus Arbitration is performed.

The protocol conversion unit 30 separates the link layer data received from the IEEE 1394 physical layer unit 21 into isochronous data and asynchronous data, performs a path setting and synchronization function, and protocols the separated isochronous data and asynchronous data. After the process of multiplexing into adaptive layer (PAL) data to convert to media access control data, and converts the media access control data received from the ultra-wideband (UWB) transceiver 27 into protocol adaptation layer (PAL) data It performs a path setting and synchronization function by separating into isochronous data and asynchronous data and multiplexes the separated isochronous data and asynchronous data into link layer data.

As shown in FIG. 2, the protocol conversion unit 30 includes an IEEE 1394 link layer unit 22, a first transaction unit 23a, a high performance serial bus bridge 24, a second transaction unit 23b, and an IEEE. An 802.15.3 protocol adaptation layer unit 25 and an IEEE 802.15.3 media access control unit 26 are included.

The IEEE 1394 link layer unit 22 performs an IEEE 1394 cycle control function and performs a packet transmission and reception function. In addition, the IEEE 1394 link layer receives the IEEE 1394 link data from the IEEE 1394 physical layer unit 21, and separates the bridge isochronous data and the transaction asynchronous data, and transfers the bridge isochronous data to the high performance serial bus bridge 24, and performs a transaction. The asynchronous data performs a function of transferring to the first transaction unit 23a. On the contrary, the IEEE 1394 link layer unit 22 multiplexes the bridge isochronous data received from the high performance serial bus bridge 24 and the transaction asynchronous data received from the first transaction unit 23a. The link data is transmitted to the IEEE 1394 physical layer unit 21.

The first transaction unit 23a receives asynchronous data (read request / response packet, write request / response packet, lock request / response packet) received from the IEEE 1394 link layer unit 22, and asynchronous subaction data (read request / Response subaction data, write request / response subaction data, and lock request / response subaction data). In addition, the first transaction unit 23a receives asynchronous subaction data (read request / response subaction data, write request / response subaction data, lock request / response subaction data) received from the high performance serial bus bridge 24. Is converted into asynchronous data (read request / response packet, write request / response packet, lock request / response packet) and transferred to the IEEE 1394 link layer unit 22.

The high performance serial bus bridge 24 analyzes frame information of asynchronous data and isochronous data received from the first transaction unit 23a and the IEEE 1394 link layer unit 22 to set a path, and a cycle timer. It performs the synchronization function according to the In addition, the high performance serial bus bridge 24 analyzes frame information of asynchronous subaction data and isochronous data received from the second transaction unit 23b and the IEEE 802.15.3 PAL unit 25, and sets a path. Synchronizes with a timer.

In addition, the high performance serial bus bridge 24 performs a net update function in which bridge portals of interconnected serial buses cooperate with each other to update a network configuration when a network structure is changed, and a global node ID. Perform configuration functions.

The second transaction unit 23b asynchronously synchronizes the asynchronous subaction data (read request / response subaction data, write request / response subaction data, lock request / response subaction data) received from the high performance serial bus bridge 24. The data is converted into data (read request / response packet, write request / response packet, lock request / response packet), and transferred to the IEEE 802.15.3 PAL unit 25. In addition, the second transaction unit 23b stores the asynchronous data (read request / response packet, write request / response packet, lock request / response packet) received from the IEEE 802.15.3 PAL unit 25 in asynchronous subaction data ( Read request / response subaction data, write request / response subaction data, lock request / response subaction data), and forward to the high performance serial bus bridge 24.

The IEEE 802.15.3 PAL (Protocol Adaptation Layer) unit 25 multiplexes isochronous data received from the high performance serial bus bridge 24 and asynchronous data received from the second transaction unit 23b. 6, which is converted into protocol adaptation layer (PAL) data in the form of an IEEE 802.15.3 MAC Service Data Unit (MSDU) frame and transmitted to the IEEE 802.15.3 media access control unit 26. Perform the function. Conversely, the IEEE 802.15.3 protocol adaptation layer unit 25 receives PAL (Protocol Adaptation Layer) data from the IEEE 802.15.3 media access control unit 26 and separates it into isochronous data and asynchronous data. For example, the isochronous data is transmitted to the high performance serial bus bridge 24 and the asynchronous data is transmitted to the second transaction unit 23b. In addition, the IEEE 802.15.3 protocol adaptation layer unit 25 supports management services, transaction services, and isochronous services for application services operating in the IEEE 1394 environment.

The IEEE 802.15.3 medium access control unit 26 is an IEEE 802.15.3 MAC Service Data Unit (MSDU) frame type as shown in FIG. 6 from the IEEE 802.15.3 protocol adaptation layer unit 25. Receives PAL (Protocol Adaptation Layer) data and converts it into MAC data in the form of IEEE 802.15.3 MAC Protocol Data Unit (MPDU) frames as shown in FIG. Performs a function of transmitting to the transceiver 27. On the contrary, the IEEE 802.15.3 medium access control unit 26 receives MAC data in the form of an IEEE 802.15.3 MAC protocol data unit (MPDU) frame from the UWB transceiver 27. Inversely converted to PAL data in the form of an IEEE 802.15.3 MAC Service Data Unit (MSDU) frame is transmitted to the IEEE 802.15.3 protocol adaptation layer unit 25.

In addition, the IEEE 802.15.3 medium access control unit 26 allows multiple ultra wideband (UWB) wireless 1394 bridges to share a single wireless channel. That is, the IEEE 802.15.3 medium access control unit 26 detects transmission sensing multiple access / collisions in an optional contention access period (CAP) according to the IEEE 802.15.3 piconet superframe as shown in FIG. Transmit command data and asynchronous data in a Carrier Sense Multiple Access with Collision Avoidance (CSMA / CA) scheme, and time division multiple access (TDMA) in the basic channel time allocation period (CTAP) The management data, command data, asynchronous data, and real-time isochronous audio / video data supporting QoS.

Meanwhile, the UWB transceiver 27 receives MAC data in the form of an IEEE 802.15.3 MAC protocol data unit (MPDU) frame from the IEEE 802.15.3 medium access controller 26, The second ultra-wideband (UWB) signal of 110 to 480 Mbps in the 3.1-10.6 GHz band is converted into a UWB signal and transmitted through the antenna 28, and the second is received through the antenna 28. The UWB signal is inversely converted into MAC data in the form of an IEEE 802.15.3 MAC Protocol Data Unit (MPDU) frame and transmitted to the IEEE 802.15.3 media access control unit 26.

The antenna 28 transmits and receives an ultra wide band (UWB) signal in the 3.1-10.6 GHz band.

The control unit 29 includes an IEEE 1394 physical layer unit 21, an IEEE 1394 link layer unit 22, a first transaction unit 23a, a second transaction unit 23b, a high performance serial bus bridge 24, and IEEE 802.15. .3 control and manage the protocol adaptation layer unit 25, the IEEE 802.15.3 media access control unit 26, and the ultra-wideband (UWB) transmission and reception unit (27).

Figure 3 is a detailed block diagram of an embodiment of the IEEE 802.15.3 media access control unit according to the present invention.

As shown in FIG. 3, the IEEE 802.15.3 medium access control unit 26 according to the present invention includes a transmitter 31 and a receiver 32. Here, the transmission unit 31 includes a transmission queue 311, a transmission management unit 312, a transmission protocol control unit 313, a transmission unit 31 including an MPDU generation unit 314, and a reception queue 321. The receiver 32 includes a reception manager 324, a reception protocol controller 322, and a MAC receiver.

First, the transmission queue 311 temporarily stores protocol adaptation layer (PAL) data in the form of IEEE 802.15.3 MSDU frame received from the IEEE 802.15.3 protocol adaptation layer unit 25, and then sequentially transmits the transmission protocol control unit ( In step 313, the control / management transmission data received from the transmission management unit 312 is temporarily stored and then transferred to the transmission protocol control unit 313 in order.

The transmission manager 312 generates control data such as an acknowledgment (ACK) frame and management data for communication with the UWB-type piconet coordinator 13 according to the control of the controller 29 to generate a transmission queue ( 311).

The transmission protocol control unit 313 uses the protocol adaptation layer (PAL) data in the form of MSDU frames transmitted from the transmission queue 311 to allow multiple ultra wideband (UWB) type wireless 1394 bridge devices to share a single wireless channel. Transmission sensing multiple access / collision avoidance (CSMA / CA: Carrier Sense Multiple Access with Collision Avoidance) or time division multiple access (TDMA: Time Division Multiple Access) is controlled according to the transmission to the MPDU generation unit 314 at that time do.

That is, the transmission protocol controller 313 transmits a transmission queue 311 according to a transmission sensing multiple access / collision avoidance (CSMA / CA) scheme in an optional contention access period (CAP) set in the IEEE 802.15.3 piconet superframe. Command data and / or asynchronous data among the protocol adaptation layer (PAL) data in the form of MSDU frames received from the MSDU) are transmitted to the MPDU generator 314, and time division multiplexing is performed in the basic channel time allocation period (CTAP). Command data, management data, asynchronous data, and / or real-time isochronous audio / video (A / V) data among protocol adaptation layer (PAL) data in the form of MSDU frames received from the transmission queue 311 according to a connection (TDMA) scheme. The MPDU generator 314 transmits the to the MPDU generator 314.

The MPDU generation unit 314 is a medium access control header (MAC Header) and the medium access control to the protocol control data (command data, management data, asynchronous data, real-time isochronous audio / video data) received from the transmission protocol control unit 313 A trailer is generated and converted into MAC data in the form of an MPDU frame, and then transferred to the UWB transceiver 27.

On the other hand, the MAC receiver 323 performs a frame address determination function for the MAC data of the IEEE 802.15.3 MPDU frame type received from the ultra-wideband (UWB) transceiver 27, performs a duplicate frame detection function, Performs Frame Check Sequence (FCS) function. In addition, the media access control header (MAC Header) and the media access control trailer (MAC Trailer) are removed and converted into MSDU received data, and then transmitted to the reception protocol control unit 322. In this case, sequential frame check (FCS) refers to checking information such as parity or periodic addition check (CRC) added for error detection at the end of each frame when information is transmitted by frame in data communication.

The reception protocol control unit 322 divides the MSDU data received from the MAC reception unit 323 into control data, management data, asynchronous data, and isochronous data, transfers asynchronous data and isochronous data to the reception queue 321, and responds. Control data such as an (ACK) frame and management data are transmitted to the reception management unit 324.

The reception queue 321 temporarily stores protocol adaptation layer (PAL) data received from the reception protocol control unit 322 and transfers the data to the IEEE 802.15.3 protocol adaptation layer unit 25 in order.

The reception management unit 324 manages a management information base (MIB) of a medium access control (MAC) layer by using control data and management data received from the reception protocol control unit 322, and uses an ultra-wideband (UWB). ) Piconet coordinator scan (scan) function, Piconet synchronization / coupling function and authentication-related functions with other UWB devices (UWB) devices.

Figure 4 is a detailed configuration of an embodiment of an ultra-wideband (UWB) transceiver according to the present invention.

As shown in FIG. 4, the UWB transceiver 27 according to the present invention includes a transmitter 41 and a receiver 42. Here, the transmitter 41 includes a modulator 411, a pulse generator 412, and a band pass filter (BPF) 413, and the receiver 42 includes a noise amplifier (LNA) 424, a signal detector. 423, a synchronizer 422, and a demodulator 421.

First, the modulator 411 performs pulse position modulation (PPM) to convert MAC data in the form of IEEE 802.15.3 MPDU frame received from the IEEE 802.15.3 medium access control unit 26 into an ultra wideband (UWB) signal. Modulation), Pulse Amplitude Modulation (PAM), Binary Phase Shift Keying (BPSK) Modulation, Quadrature Phase Shift Keying (QPSK) Modulation, Direct Sequence Code (DSC) Code) modulation and the like modulate the MAC data into a pulse signal of very narrow width and transmits it to the pulse generator 412.

The pulse generator 412 inserts time information into a modulation signal received from the modulator 413 to generate a series of pulse signals.

The band pass filter (BPF) 413 passes a signal existing in two frequency bands of 3.1-5.15 GHz and 5.825-10.6 GHz among the pulse signals received from the pulse generator 412 and passes the frequency band. The signal deviating from the signal is removed and the ultra-wideband (UWB) signal from which the noise is removed is transmitted through the antenna 28.

The low noise amplifier (LNA) 424 low noise amplifies the ultra wide band (UWB) signal received from the antenna 28 and transmits the low noise amplifier (LNA) 424 to the signal detector 423.

The signal detector 423 receives an amplified ultra wideband (UWB) signal from a low noise amplifier (LNA) 424 and detects the signal by a correlation method, and a signal to noise ratio (SNR) and The phase difference is calculated and the detected signal is transmitted to the synchronizer 422 and the demodulator 421.

The synchronizer 422 secures pulse synchronization with respect to the signal received from the signal detector 423 and provides a synchronization signal with a signal detector 423 and a demodulator so as to compensate for a time delay occurring on an ultra wideband (UWB) channel. 421).

The demodulator 421 demodulates the signal received from the signal detector 423 into a series of pulse signals according to the synchronization signal received from the synchronizer 422 and converts the received signal into MAC received data in the form of an IEEE 802.15.3 MPDU frame. It is then forwarded to the IEEE 802.15.3 media access control unit 26.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The UWB wireless bridge device according to the present invention as described above converts data from a wired serial device connected to a serial port in a home or office into a UWB signal for wireless transmission, and inversely converts a UWB signal into a wired serial data. By providing a high speed wired / wireless integrated network, it is possible to wirelessly transmit high quality audio and video signals from a wired device.

Claims (9)

In the ultra-wideband wireless bridge device, Physical layer processing means for encoding the physical layer signal received from the serial bus apparatus connected by wire into link layer data and decoding the link layer data received from the protocol conversion means into a physical layer signal; The link layer data received from the physical layer processing means is separated into isochronous data and asynchronous data to perform path setting and synchronization functions, and the separated isochronous data and asynchronous data are multiplexed into protocol adaptation layer (PAL) data. Converts the medium access control data, converts the medium access control data received from the ultra wideband signal transmission / reception means into PAL data, and classifies it into isochronous data and asynchronous data to perform the path setting and synchronization function Said protocol conversion means for multiplexing one isochronous data and asynchronous data into link layer data; The second to convert the medium access control data received from the protocol conversion means into an ultra wide band (UWB) signal and to transmit the same through an antenna, and to convert the ultra wide band (UWB) signal received through the antenna into media access control data. Wideband signal transmission and reception means; And Control means for controlling and managing said physical layer processing means, said protocol conversion means, and said ultra-wideband signal transmission and reception means Ultra-wideband wireless bridge device comprising a. The method of claim 1, The protocol conversion means, A link for separating the link layer data received from the physical layer processing means into synchronous data and asynchronous data, and multiplexing the synchronous data received from the serial bus bridge means and the asynchronous data received from the first transaction processing means into link layer data. Layer processing means; First transaction processing means for converting asynchronous data received from said link layer processing means into asynchronous subaction data and converting asynchronous subaction data received from said serial bus bridge means into asynchronous data; Analyzing frame information of the asynchronous data and isochronous data received from the first transaction processing means and the link layer processing means to set a path, perform a synchronization function according to a cycle timer, and a second transaction processing means. And the serial bus bridge means for analyzing the frame information of the asynchronous subaction data and isochronous data received from the protocol adaptation layer processing means, setting a path, and performing a synchronization function according to a cycle timer. The second transaction processing means for converting asynchronous subaction data received from the serial bus bridge means into asynchronous data and converting asynchronous data received from the protocol adaptation layer processing means into asynchronous subaction data; Isochronous data and asynchronous data received from the serial bus bridge means and the second transaction processing means are multiplexed, converted into protocol adaptation layer (PAL) data, and protocol adaptation layer (PAL) data received from the media access control processing means. The protocol adaptation layer processing means for separating a into isochronous data and asynchronous data; And Converting the protocol adaptation layer (PAL) data received from the protocol adaptation layer processing means into media access control data, and converting the media access control data received from the ultra wideband signal transmission and reception means into protocol adaptation layer (PAL) data. The media access control processing means Ultra-wideband wireless bridge device comprising a. The method of claim 2, The medium access control processing means, Transmission sensing multiple access / collision avoidance (CSMA / CA) or time division multiple access (TDMA) data received from the protocol adaptation layer processing means. A medium access control transmission means for converting the medium access control data at the corresponding time point according to the scheme and transmitting the medium access control data to the ultra wideband signal transmission / reception means; And After converting the medium access control data received from the ultra-wideband signal transmission / reception means into protocol adaptation layer (PAL) data, the control data, management data, asynchronous data, and isochronous data are separated and the asynchronous data and isochronous data are adapted to the protocol adaptation. A management information base (MIB) management function of a media access control (MAC) layer, an ultra-wideband (UWB) type piconet coordinator scan function, The media access control receiving means for performing a piconet synchronization / combination function and authentication related function with other UWB devices Ultra-wideband wireless bridge device comprising a. The method of claim 3, wherein The medium access control transmission means, Transmission storage means for temporarily storing the protocol adaptation layer (PAL) data and the control / management data received from the protocol adaptation layer processing means and the transmission management means and sequentially transferring the protocol adaptation layer (PAL) data to the transmission protocol control means; The transmission management means for generating control data according to the control of the control means and control / management data for communication with an ultra wide band (UWB) type piconet coordinator and transmitting the control data to the transmission storage means; Transmission Detection Multiple Access / Collision Avoidance (CSMA / CA) or Time Division Multiple Access (TDMA: Time Division) of protocol adaptation layer (PAL) data and control / management data received from the transmission storage means. The transmission protocol control means for transferring to the medium access control data generation means at a corresponding point in time according to a Multiple Access method; And The medium access control data generating means for converting the data received from the transmission protocol control means into medium access control data and then transferring the data to the ultra wideband signal transmission and reception means; Ultra-wideband wireless bridge device comprising a. The method of claim 4, wherein The transmission protocol control means, In an optional contention access period (CAP) set in a piconet superframe, command data among protocol adaptation layer (PAL) data received from the transmission storage means according to a transmission sensing multiple access / collision avoidance (CSMA / CA) scheme. And / or transmits asynchronous data to the medium access control data generating means, and in the basic channel time allocation period (CTAP), a protocol adaptation layer received from the transmission storage means according to a time division multiple access (TDMA) scheme. Ultra-broadband wireless bridge device, characterized in that for transmitting command data, management data, asynchronous data, and / or real-time isochronous audio / video (A / V) data among the (PAL) data to the medium access control data generating means. . The method of claim 3, wherein The medium access control receiving means, Protocol adaptation for converting the media access control data received from the ultra-wideband signal transmission / reception means into a protocol conforming layer data by performing a frame address determination function, a duplicate frame detection function, and a frame check sequence (FCS) function. Hierarchical data conversion means; The protocol adaptation layer data received from the protocol adaptation layer data converting means is separated into control data, management data, asynchronous data, and isochronous data, and the asynchronous data and isochronous data are transferred to the reception storage means, and the control data and management data are Reception protocol control means for forwarding to reception management means; The reception storing means for temporarily storing the asynchronous data and the isochronous data received from the reception protocol control means, and for transferring the asynchronous data and the isochronous data to the protocol adaptation layer processing means in order; And A management information base (MIB) management function of a medium access control (MAC) layer and an ultra-wideband (UWB) type piconet coordinator scan function using control data and management data received from the reception protocol control means. The reception management means for performing a piconet synchronization / combination function and authentication related function with other UWB devices; Ultra-wideband wireless bridge device comprising a. The method according to any one of claims 1 to 6, The ultra wideband signal transmission and reception means, Ultra-wideband signal transmission means for converting the medium access control data received from the protocol conversion means into an ultra-wideband (UWB) signal and transmitting it through an antenna; And Ultra-wideband signal receiving means for converting the UWB signal received through the antenna to the media access control data for transmission to the protocol conversion means Ultra-wideband wireless bridge device comprising a. The method of claim 7, wherein The ultra wideband signal transmission means, Modulation means for modulating the medium access control data received from the protocol conversion means into a pulse signal of an ultra wide band (UWB) signal band; Pulse generation means for generating a series of pulse signals by inserting time information into the modulation signal received from the modulation means; And Filtering means for transmitting noise through the antenna after removing noise from the pulse signal received from the pulse generating means Ultra-wideband wireless bridge device comprising a. The method of claim 8, The ultra-wideband signal receiving means, Low noise amplifying means for low noise amplifying the ultra wide band (UWB) signal received from the antenna; Signal detecting means for detecting an ultra wide band (UWB) signal received from the low noise amplifying means and calculating a signal to noise ratio (SNR) and a phase difference; Synchronization means for securing pulse synchronization with respect to the signal received from the signal detection means, generating a synchronization signal for compensating for a time delay occurring on an ultra wideband (UWB) channel, and delivering the synchronization signal to the signal detection means; And Demodulation means for demodulating the signal received from the signal detection means into a series of pulse signals according to the synchronization signal received from the synchronization means, converting the signal into media access control data, and then transferring the signal to the protocol conversion means. Ultra-wideband wireless bridge device comprising a.

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