KR100274617B1 - Wideband duplex wire & wireless communication terminal equipment for single subscriber user - Google Patents

Abstract

PURPOSE: An independent subscriber-use wide band both way wired/wireless communication terminal equipment is provided to provide an independent subscriber with a connection through a wired/wireless CDMA method by being placed in the middle of a wideband wireless base station or CATV network and subscriber's terminal and also to provide with the voice service, the voice band data communication service such as a FAX and a MODEM, the high speed digital data service of above 2Mbps level and a video-image service such as a cable TV and satellite receipt. CONSTITUTION: An RF modem part(11) is multi-connected to the outside such as a base station or a CATV head end(7). A base band processor(12) processes the signal received from the RF modem part and the signals transmitted through the RF modem part. A user interface part(13) receives and processes the signal from the user. A subscriber terminal interface part(14) communicates with various kinds of subscriber terminals. A controller(40) controls the parts above.

Description

Broadband Two-Way Wired / Wireless Terminal for Single Subscriber

The present invention relates to the configuration of a device capable of providing a conventional public network service, high-speed data communication service, CATV / satellite reception service to general subscribers using broadband wireless communication or cable TV network.

In general, existing subscriber terminal devices (telephones, G3FAX, modems, etc.) are interfaced to wired telephone networks to provide services to users. In order to use high-speed data services, users can use high-speed modems or code-class high-speed leased lines and terminals. Separate use of the device was inevitable. In addition, new service providers require enormous investment costs and time to build a subscriber network with the same structure as the existing structure. The structural limitations that do not meet the demand for multimedia information exchange service.

With the recent development of wireless communication and broadband communication technology, it is possible to overcome the limitations of the existing subscriber network, provide more improved services to users, and build an efficient subscriber network that can satisfy the complex and diverse service needs in a multi-entry environment. And related technologies are emerging. The new subscriber network is a technology that enables high-speed data communication and additional services by faster and more reliable wired / wireless communication methods beyond the limits of high-quality services, speed limitations, and simple information exchange. As a result, the importance and weight are being highlighted day by day.

Therefore, the present invention is located in the middle of a broadband wireless base station or CATV transmission network and the subscriber terminal device to provide a connection by wired / wireless multiple access method, and voices such as FAX and MODEM as well as voice services provided by existing cellular systems. Various communication methods and various subscribers in the construction method of broadband bidirectional wired / wireless communication terminal device that can provide band data communication service, high speed digital data service of 2Mbps or higher, and video service such as cable TV and satellite reception to single subscriber It is modularized so that it can be replaced for interface and matching of the terminal, and it is possible to provide various communication methods in one communication terminal by unifying functions that are commonly performed in various communication methods into one module, and existing Infrared Remote Control for CATV Set Top Box Control And space to allow for providing even more flexibility and convenience for the constraints on to provide a method for configuring the remote control to apply the function to the portable wireless telephone apparatus.

1 is a block diagram of an overall wired / wireless network system including a broadband bidirectional wired / wireless communication terminal device capable of interfacing with a general subscriber terminal device.

2 is a detailed block diagram of a broadband bidirectional wired / wireless communication terminal device capable of interfacing with a general subscriber station device.

<Explanation of symbols for main parts of drawing>

1: general subscriber station

2: Broadband bidirectional wired / wireless communication terminal device

3: base station 4: base station operating device

5: exchange 6: IWF (Inter Working Function)

7: CATV Headend 8: CATV Program Provider

9: data network

11: Modular RF modem unit that can be replaced by communication method of broadband wired / wireless communication terminal device

12: Baseband processing unit commonly used in various communication methods

13: user interface

14: Subscriber terminal interface unit that can be replaced in a modular form to match a variety of subscriber interface

15: Broadband Wireless Subscriber Network (B-WLL) Type RF Modem Unit

16: B-WLL / cable type RF modem part 17: cable type modem part

18: satellite receiving RF modem unit 19: transmission signal processing unit

20: reception signal processing unit 21: display unit

22: function selection unit 23: wireless telephone fixing unit

24: built-in telephone 25: ISDN terminal signal processing unit

26: data terminal signal processor 27: analog terminal signal processor

28: video terminal signal processing unit 29: wireless telephone portable device

30 antenna 31 transceiver

32: transmitter 33: receiver

34: local oscillator 35: D / A (Digital to Analog) conversion unit

36: A / D (Analog to Digital) conversion unit 37: Combiner

38: Splitter 39: Transcoder

40: control unit 41: power unit

1 is a block diagram of an overall wired / wireless network system including a broadband bidirectional wireless communication terminal device 2 capable of interfacing with a general subscriber station 1, a B-WLL base station 3, a base station operating device 4, In the switch 5, the IWF 6, and the cable network, a program provider (PP) 9, a cable TV headend 7, a PSTN and a data service network 10 interoperable with these networks, Broadband bidirectional wired / wireless communication terminal device (2) capable of interfacing the general subscriber terminal device including the contents of the present invention is divided into 10 major parts. The data flow for the service is that the two-way broadband wired / wireless communication terminal device 2 connected to the general subscriber station 1 is connected to the base station 3 in a wireless multiple access method, or the cable TV headend and wired multiple access. Connected in a manner such that service is provided via the switch 5 or the data service network 10. In FIG. 1, the base station operating device 4 includes a base station 3 which is responsible for call processing required between the switch 5 and the base station 3, traffic aggregation function and signal transmission function for efficient use of the switch 5 connection line, and It is in charge of the operation and management of the broadband wired / wireless communication terminal device (2). The exchange 5 performs wired / wireless on / off signal processing, network (PSTN / ISDN) access and charging management functions. Interworking Function (IWF) 6 is a data communication matching device for a data service and is interfaced with a base station 3 for a data service. In addition, when the CATV RF modem is used, the cable TV headend (7) is a downlink cable TV broadcast between the service network (10) and the bidirectional broadband wired / wireless communication terminal (2), and the bidirectional communication between the PSTN and the broadband bidirectional wired communication terminal. It is responsible for delivering voice, data and CATV uplink signals. The broadband two-way wired / wireless communication terminal device 2 connects various subscriber terminal devices 1 through a subscriber terminal interface including a data function unit, a telephone service function unit, and a video function unit for CATV / satellite reception. The RF modem unit or the CATV RF modem unit enables communication with the base station 3 of the wireless network system or the head end of the cable TV network. The antenna of the broadband bidirectional wired / wireless communication terminal device for wireless communication with the base station 3 can be configured indoor and outdoor according to the radio wave environment, and can be composed of directional and omnidirectional antennas depending on mobility. .

FIG. 2 is a detailed block diagram of a bi-directional wired / wireless communication terminal that can interface with a general subscriber station of FIG. 1. The signal transmission path from an antenna for transmitting / receiving data with a base station to an interface terminal of a subscriber station is input from a cable TV headend. The signal transmission path from the coaxial cable to the subscriber terminal interface interface is composed of the main block diagram.

Hereinafter, the configuration of the bidirectional wired / wireless communication terminal device will be described in detail with reference to FIG. 2.

First, the configuration of the RF modem unit will be described.

In the block diagram of the RF modem unit in the figure, the antenna 30 in the direction of the base station is responsible for the transmission and reception with the base station, and the transmission / reception divider 31 provides a separate path for transmission and reception between the base station or the headend and the broadband bidirectional wireless communication terminal device. to provide.

Transmitter 32 is a power amplifier that amplifies the RF signal when transmitting a signal to the antenna, an up-converter responsible for converting a low-frequency baseband signal to an RF frequency signal, and suppresses out-of-band noise and spurious components Band pass filter for transmitting only, and a gain control device for adjusting the transmission output, the receiver 33 is an ultra short amplifier, band pass filter for amplifying the signal while minimizing the input noise for the signal input from the antenna or lead wire And a down converter for converting the received RF signal into a baseband signal, and a gain control device for maintaining a constant power of the received signal. In particular, the noise generated by the low-noise amplifier is generated over the entire band. A band pass filter can be used to receive an optimal signal by suppressing out-of-band noise levels and removing spurious components.

The local oscillator 34 is a frequency generator for upconverting the baseband signal to the RF signal and downconverting the RF signal to the baseband signal made by the transmitter / receiver and is connected to the upconverter and the downconverter of the transmitter and the receiver.

The D / A converter 35 performs a function of converting the digital signal from the baseband into an analog signal before transmitting it to the transmitter, and the A / D converter 36 converts the analog signal of the receiver into a digital signal. Is converted to and transmitted to the baseband processor 12.

The synthesizer 37 synthesizes the analog-modulated baseband signal and the CATV upstream signal input through the user interface, and the separator 38 separates the CATV broadcasting signal from the CATV downlink signal and communication signals such as telephone and data. It performs the function.

As described above, the RF modem unit 11 is composed of modules such as B-WLL type, CABLE type, B-WLL / CABEL common type, and satellite reception type, and installs necessary modules according to the communication method available in the subscriber environment. Service is available so that various communication methods can be accommodated by the same system.

The baseband processor 12 comprises a single module that is commonly used among the various communication processing functions performed by the mounting modules of the RF modem unit to accommodate various communication methods in the same system. It is an economical structure that accommodates the same functions in one module. This is performed in accordance with the combination of the RF modem unit 11 and the subscriber station interface unit 14, and consists of an ASIC for multiple access function processing, and digital signals such as channel encoding and decoding for bidirectional signals according to a standardized access standard. It is in charge of the processing.

The subscriber station interface unit 14 is composed of an ISDN terminal signal processor 25, a data terminal signal processor 26, an analog terminal signal processor 27, and a video terminal signal processor 28. It is in charge of the interface and each function can be modularized so that the necessary modules can be installed for service.

The ISDN terminal signal processing unit 25 connects the ISDN terminal apparatus and the wired / wireless link to provide ISDN service, and the ISDN terminal apparatus and the S / T-interface (RJ-45 connector) or the U-interface (RJ- 11 connectors) provides data rates up to 144 Kbps.

The data terminal signal processing unit 26 is connected to a digital data terminal apparatus such as a PC and 10BASE-T / 100BASE-T (RJ-45 connector), USB (Universal Serial Bus), IEEE1394 (High speed Serial Bus), and the like. Send and receive high speed digital data.

The analog terminal signal processing unit 27 performs an analog line matching function with an existing general analog terminal device (telephone, G3FAX, modem, etc.) by using an RJ-11 connection port, and receives the analog signal from the subscriber terminal device. Converts to digital signal and reverse conversion function, supplies constant talk current to subscriber line, and detects ON / OFF HOOK status of telephone by monitoring impedance at this time, Ring generator function to inform subscriber terminal device that signal is being received, and function to provide ring tone such as congestion sound sent to subscriber when there is no channel (wire / wireless) resource available. It performs the line status monitoring function to monitor the abnormality of the line when the analog line is matched with the terminal equipment.

The transcoder section 39 converts the voice signal 64kbps PCM data from the analog subscriber interface section and the radiotelephone fixing section into 32 kbps ADPCM data and converts the 32 kbps ADPCM data from the baseband processor into 64 kbps PCM data. It is responsible for the function to improve the efficiency of the RF unit.

The video terminal signal processing unit 28 is composed of a CATV signal processing unit and a satellite signal processing unit to perform a CATV / satellite set-top function, and a CATV RF band signal received by the separator 38 of a cable or B-WLL / cable RF modem unit. Function to select the channel according to the CATV / satellite set-top box control signal from the function selector 22 of the user interface 13 and transmit the corresponding channel signal to the image receiving terminal. And the CATV / signal upstream signal transmitted through the function selector or the radiotelephone fixing device such as automatic channel setting and channel memory by the user interface control function, and the function of the general CATV / satellite set-top box. It delivers to the synthesizer of a cable-integrated RF modem.

The radiotelephone fixed processor 23 is composed of an RF transmission / reception function for providing a radio telephone to a subscriber and a radiotelephone fixed unit telephone 24 for providing a telephone function to a user. Demodulation of voice signal and encoding of voice signal of cordless phone fixed device telephone 24 into 64 kbps PCM signal to transcoder 39 and decoding of 64 kbps PCM signal sent from transcoder 39 to wireless phone fixed device telephone It transmits or modulates it into RF and delivers it to the wireless telephone portable device, and receives the CATV set top box control signal received from the wireless telephone portable device 29 and transmits it to the CATV signal processing unit of the video terminal signal processing unit 28. .

The wireless telephone portable device 29 modulates and transmits a user's voice signal into an RF signal, demodulates the received RF signal, and restores the voice signal to a CATV set-top box remote control user interface. The control signal is transmitted to the wireless telephone fixing unit 23 through the wireless channel.

The radiotelephone fixture telephone 24 provides the telephone functionality to the user.

The display unit 21 processes the display function of the terminal device information and the current state information of the CATV / satellite set-top box being controlled through the user interface.

The function selection unit 22 performs a function of receiving relevant information from the user for overall control of the broadband bidirectional wired / wireless communication terminal device and control of the wireless telephone fixing unit phone 24 and the video terminal signal processing unit 28. do.

The controller 40 is composed of a processor and a memory, and the processor performs initial software processing and timing estimation functions for the purpose of overall control of the system. The memory can use program / data / non-volatile memory, and the program memory contains software of bidirectional wired / wireless communication terminal and necessary constant data values, and the data memory is used for temporary storage of each variable during operation. Volatile memory is responsible for storing program variables required for operation when the device is powered on / off, diagnosing various faults and failures of the system, and reporting them to the host system.

The power supply unit 41 supplies power to the entire system and has an auxiliary power source configured as a storage battery, so that when the commercial power source is cut off, the power supply unit 41 is automatically switched to the auxiliary power source and does not affect a function currently being performed.

As described above, the present invention is connected to a wireless base station using a radio wave of several GHz to several tens of GHz in a wireless multiple access method or a wired multiple access method through a coaxial cable with a head end of a cable TV network. In addition to existing services such as two-way CATV broadcasting service, communication methods and subscribers available in the subscriber environment to provide high-speed broadband bi-directional wired / wireless communication data service of 2Mbps or more beyond the speed limit of existing public network service. It provides various interfaces within one terminal device according to the service demand of the user, and it is economical that can be flexibly applied to the service environment of the subscriber because the module that processes the same function in each communication method is composed of one common module. You can configure the system. In addition, when two or more communication methods are used, the narrowband wireless subscriber network is prepared for the lack of available resources due to congestion of outgoing signals exceeding the expected convergence cost or deterioration of service quality due to deterioration of broadband wireless environment. Alternatively, through automatic emergency switching function for solid line connection of the existing wired PSTN, it is possible to provide a service capable of maintaining a certain level or more of quality to the subscriber.

Such a function can be implemented as a system capable of connecting to a broadband wireless network or a cable network through proper selection and combination of subscriber terminal interface unit and B-WLL type, cable type and B-WLL / cable common RF modem unit.

Claims (11)

Receives a signal from a user, an RF modem unit that is multiplely connected to the outside such as a base station or a CATV headend, a signal received through the RF modem unit, a baseband processor for processing a signal transmitted through the RF modem unit, A single subscriber broadband two-way wired / wireless communication terminal comprising a user interface unit for processing this, a subscriber station interface unit for communicating with various subscriber stations, and a control unit for controlling each of the above. The broadband broadband bidirectional wired / wireless communication terminal for a single subscriber according to claim 1, wherein the RF modem unit is configured in a module format for each communication method to be flexibly applied to various communication methods that can be provided in a subscriber environment. Device. The apparatus of claim 1, wherein the RF modem unit comprises: a transceiver for providing a separate path when communicating with an external device, a transmitter for processing a signal transmitted to the outside, a receiver for processing a signal received from the outside; A local oscillator for generating a frequency for vertical conversion of the signal, a D / A converter for converting the digital signal from the baseband part into an analog signal, and A for converting the analog signal of the receiver part into a digital signal It is a B-WLL type RF modem unit consisting of a / D conversion unit and wirelessly connected to the outside through an antenna wireless broadband bidirectional wired / wireless communication terminal for subscribers. The synthesizer of claim 1, wherein the RF modem unit combines a transmission / reception splitter that provides a separate path when communicating with an external device, a baseband signal that has been modulated with an analog signal, and a CATV uplink signal input through a user interface. And a separator for separating CATV broadcasting signals and communication signals such as telephone and data from CATV downlink signals, a transmitter for processing signals transmitted externally, a receiver for processing signals received from the outside, and vertical conversion of signals. A local oscillator for generating a frequency for a digital signal, a D / A converter for converting a digital signal from the baseband part to an analog signal, and an A / D converter for converting an analog signal of the receiver part into a digital signal Broadband two-way wired / wireless communication for single subscriber, characterized in that the cable type RF modem unit is connected to the CATV headend in a wired manner End devices. The RF modem unit of claim 1, wherein the RF modem unit comprises a local oscillator for generating a frequency for conversion of a receiver signal for receiving a signal from a satellite through a satellite receiver antenna and receives a satellite broadcast signal. Broadband bidirectional wired / wireless communication terminal device for a single subscriber. The RF modem unit of claim 1, wherein the baseband processor processes and transmits data transmitted from various communication method modules of the RF modem unit to the subscriber station interface, and processes data transmitted from the subscriber station interface of the module type to the RF modem unit. As a configuration for transmitting, Broadband bidirectional wired / wireless communication terminal for a single subscriber, characterized in that configured to provide a service economically by providing a plurality of communication methods in the same module. The apparatus of claim 1, wherein the user interface unit comprises: a function selection unit for inputting a control command from a user, a display unit for displaying information of a terminal device and a current state of a CATV / satellite set-top box, and a wireless telephone portable device. And a wireless telephone fixing unit which enables voice communication and receives a control signal of the CATV / satellite set top box from the wireless telephone portable device and transmits it to the video terminal signal processing unit through the function selection unit. An analog terminal signal processing unit for accommodating a telephone to enable analog communication with the outside, and receiving a TV and receiving a video signal from the outside and a control signal from a user, and displaying the video signal on a TV according to control. Broadband bidirectional wired / for single subscriber, characterized in that consisting of a video terminal signal processing unit Wireless communication terminal device. The apparatus of claim 6, wherein the video terminal signal processor comprises: a CATV signal processor configured to process a CATV video signal and a control signal thereof; a satellite signal processor configured to receive satellite signals; and a satellite signal of a signal corresponding to the CATV. Broadband bidirectional wired / wireless communication terminal for a single subscriber, characterized in that composed of a synthesizer. [7] The apparatus of claim 1 or 6, wherein the subscriber station interface unit includes an ISDN terminal signal processing unit for receiving and communicating with an ISDN terminal. The subscriber station interface of claim 1 or 6, wherein the subscriber station interface unit receives and communicates with a data terminal signal processing unit for receiving and communicating various data terminal interfaces (10 / 10BASE-T, USB, IEEE1394, etc.) of the subscriber. Broadband bidirectional wired / wireless communication terminal device for a single subscriber, characterized in that it is configured in a modular form to be flexibly applied to the environment. 7. The broadband bidirectional wired / wireless communication terminal for a single subscriber according to claim 6, wherein the wireless telephone fixing unit includes a built-in telephone and is used as a remote control function for controlling a video terminal signal processing unit through a cable TV / satellite.

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