KR20000011363U - Splitter Internal Asymmetric Digital Subscriber Line Modem - Google Patents

Abstract

The present invention converts asynchronous transmission mode interface as a matching unit for transmission and reception of telephone wire network and data, and asynchronous transmission mode data transmitted or received through asynchronous transmission mode interface and converts asynchronous data into synchronous data upon reception. It relates to an ADSL modem having an asynchronous transfer mode layer for switching and an ADSL physical layer for digital data communication of a computer connected through the asynchronous transfer mode layer. The data generated from the telephone control module and the ADSL physical layer that performs voice communication and the data generated from the telephone control module are mixed and transferred to the asynchronous transmission mode layer or the voice data is separated from the data input from the asynchronous transmission mode layer. Modulo It provides nearly splitter splitter built-in asymmetric digital subscriber line modem includes a module to the effect that it can perform high-speed data communication and real-time voice telephony even if you do not use a splitter.

Description

Built-in splitter asymmetric digital subscriber line modem (ADSL modem have splitter)

The present invention relates to a modem for asymmetric communication. In particular, the use of the splitter can be suppressed by integrating a module having a splitter function therein without using a splitter for distinguishing data communication from voice telephony communication. The present invention relates to an asymmetric digital subscriber line modem with a built-in splitter.

In general, the development of electronic technology has made rapid progress in the field of communication technology and computer, so that a new form of communication, data communication, is becoming a part of life.

Conventional voice-band modems can connect users end-to-end via a public switched telephone network (PSTN). However, the transmission throughput of the voice-band modem is limited to about 40 Kbps or less due to the 3.5 KHz bandwidth limited by the codes at the bandpass filter and PSTN interface points. On the other hand, the twisted-pair telephone subscriber loop of a computer user has more available bandwidth.

Depending on the length of the subscriber loop, the bandwidth at 50 dB of loss may be 1 MHz wide. Transmission systems according to local subscriber loops are generally referred to as digital subscriber lines (DSLs).

As consumers' demands for entertainment in digital formats (eg, video-on-dimend) and interactive electronic access to information (the Internet) increase, these demands are in fact traditional voice-bands. The modems have exceeded their capabilities. As a result, various transmission methods have been proposed, such as optical fiber links, direct satellite transmissions, and broadband coaxial cables to each home.

However, these methods are often too expensive and high bit rates using cable modems using coaxial cable connections to existing homes and twisted-pair of existing copper wires connecting home and telephone company central offices (COs). Cheaper alternatives such as digital subscriber lines (DSLs) have emerged.

Several digital subscriber line (DSL) technologies have been developed for different applications. The original 2B1Q digital subscriber line technology was used as the ISDN Basic Rate Access channel U-interface. High speed transmission digital subscriber line (HDSL) technology has been used as a repeaterless T1 (T1) service.

A prior art example using DSL technology transmits signals over a telephone loop defined by a standard specification as a communication system protocol that provides a low speed data stream from a residence to a CO (upstream) and a CO to a residence (downstream). Asymmetric Digital Subscriber Line (hereinafter referred to as ADSL).

Briefly, the ADSL method has a transmission speed of 1.5M bits (or 6M bits) per unit time (seconds) in the downward direction from the telephone station to the home using an existing telephone line (a twisted pair copper wire). Upwards, the term refers to an asymmetric communication method capable of maintaining a transmission rate of 16K bits per unit time (seconds).

The feature of the ADSL communication method is that it can be used by coexisting existing telephone or ISDN basic interface (2B + D) on the same telephone line. However, the ADSL communication method is proposed by "Bell Core" and uses a bandwidth of 400KHz at a frequency of 50-100KHz or more, which is a higher frequency band than the voice of a telephone.

In the case of data communication using the above-described ADSL, a general home distinguishes between a general telephone and an ADSL modem through a splitter called a splitter. On the other hand, as shown in FIG. 1, there is also a method of directly performing voice telephone communication and data communication through an ADSL modem without using a splitter without using a splitter.

In this case, the voice telephone communication and the data communication can be directly performed through the ADSL modem without the splitter due to the characteristics of the ADSL modem because the ADSL modem can simultaneously operate a voice-band modem or a telephone call. .

However, when the voice telephone communication and the data communication are performed separately using the ADSL modem without the splitter, the data processing speed is significantly lower than that of the splitter. On the other hand, when the splitter is used, the splitter is used. There is a problem that requires the use of expensive equipment called the Terra.

The object of the present invention to solve the problems described above is to use the splitter by integrating a module having a splitter function therein without using a splitter for distinguishing data communication and voice telephony communication. It is to provide a splitter built-in asymmetric digital subscriber line modem for suppression.

1 is a block diagram of a general subscriber side using a conventional asymmetric digital subscriber line modem.

2 is an exemplary configuration diagram of a splitter built-in asymmetric digital subscriber line modem according to the present invention.

<Explanation of symbols for main parts of drawing>

10: ADSL Physical Layer 20: Splitter Module

30: asynchronous transfer mode layer 40: asynchronous transfer mode interface

50: telephone control module 60: telephone

70: computer

A feature of the present invention for achieving the above object is an asynchronous transmission mode interface as a matching unit for transmission and reception of data with the telephone line network, and asynchronous transmission mode when transmitting or receiving data transmitted through the asynchronous transmission mode interface when receiving and receiving An ADSL modem comprising an asynchronous transmission mode layer for converting asynchronous data into synchronous data and an ADSL physical layer for digital data communication of a computer connected through the asynchronous transmission mode layer. A telephone control module for performing voice communication with a telephone connected through a transmission mode layer, and data generated from the ADSL physical layer and data generated from a telephone control module are mixed and transmitted to the asynchronous transmission mode layer or the asynchronous transmission. Mouth in the mode hierarchy Separating the audio data of the data that has to include the splitter module that is transferred to the call control module.

The above object and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention described below with reference to the accompanying drawings by those skilled in the art.

First, with respect to a typical ADSL-based system, a server that is typically deployed in a CO can provide movies or other data-intensive content, and can receive and recombine data at the residence as well as send control information back to the CO. Set-top-box. Meaningful display or use of downstream content typically requires a sustained data rate through the modem. Due to the continuing demand for data rates, ADSL systems are basically designed to run only at certain speeds under certain operating conditions. If the subscriber line meets the quality requirements, the ADSL modem can function, otherwise new line equipment must be installed or the line quality must be improved.

In particular, the ANSI standard ADSL requires up to 6Mbps transmission (downstream) and up to 640 Kbps reception (upstream) from the home over existing twisted-pair.

ADSL modems differ in many respects from the voice-band modems currently used for digital communication on telephone systems. Voice-band modems at home substantially change the digital bits to modulated tones within the voice-band (30 Hz-3.3 KHz), so that the signals can be transmitted as if they were ordinary voice signals generated in a telephone set. The voice-band modem at the receiving home then recovers digital bits from the received signal. Current ITU V-Series voice-band modem standards (eg, V.32 and V.34) require transmission at bit rates up to 33.6 Kbps; Even this is very slow for real-time video and very slow for Internet graphics. In contrast, ADSL modems operate in a higher frequency range than the voice-band; This enables higher data rates.

With reference to Figure 2 attached to a preferred embodiment of the present invention for embedding a module having a splitter function in the function of the ADSL modem as described above.

FIG. 2 is an exemplary configuration diagram of a splitter embedded asymmetric digital subscriber line modem according to the present invention, and shows an asynchronous transmission mode interface 40 and asynchronous transmission mode interface 40 as a matching unit for transmitting and receiving data with a telephone line network. Asynchronous transmission mode layer 30 for converting the data transmitted or received through asynchronous transmission and asynchronous transmission data to the synchronous data when receiving, and the computer connected through the asynchronous transmission mode layer 30 ADSL physical layer 10 for performing digital data communication of 70, telephone control module 50 for performing voice communication with telephone 60 connected through the asynchronous transmission mode layer 30, and the The data generated by the ADSL physical layer 10 and the data generated by the telephone control module 50 are mixed and transferred to the asynchronous transmission mode layer 30. Or by separating the audio data of the data input in the asynchronous transfer mode layer (30) it consists of a splitter module 20 that is transferred to the call control module 50.

Looking at the preferred operation of the splitter built-in asymmetric digital subscriber line modem according to the present invention configured as described above are as follows.

The ADSL physical layer 10 connected to the computer 70 outputs data generated by the computer as a digital signal using a frequency band having a bandwidth of 400 KHz at a frequency of 50 to 100 KHz or more.

On the other hand, if any user wants to make a telephone call while the above computer data communication is being performed or is interrupted, the user inputs a telephone number through the keypad of the telephone 60 and accordingly the telephone control module 50 ) Transmits the corresponding data to the asynchronous transmission mode layer 30 through the splitter module 20. Subsequently, when a call connection is made through the telephone network, the user makes a call with the called party using a handset provided in the telephone 60.

At this time, the splitter module 20 transmits data for data communication among the received data to the ADSL physical layer 10 and provides voice data to the telephone control module 50.

In addition, the asynchronous transmission mode interface 40 transfers data through a matching unit for transmitting and receiving data with the telephone line network 30, the asynchronous transmission mode layer 30 converts the data input through the splitter module 20 asynchronously Transfer to the asynchronous transmission mode interface 40 side.

The operation according to the received voice or call connection request is performed in the reverse direction of the above-described transmission process.

By providing a splitter built-in asymmetric digital subscriber line modem operating as described above, it is possible to perform high-speed data communication and real-time voice telephony without using a splitter.

Although the present invention has been shown and described with respect to specific embodiments, it will be understood that various modifications and changes can be made without departing from the spirit and scope of the invention as indicated by the utility model registration claims. Anyone can grow up easily.

Claims (1)

An asynchronous transmission mode interface as a matching unit for transmitting and receiving data with a telephone line network, and asynchronous transmission mode of data transmitted or received through the asynchronous transmission mode interface, and converting asynchronous data into synchronous data upon reception. In an ADSL modem having an asynchronous transmission mode layer and an ADSL physical layer for performing digital data communication of a computer connected through the asynchronous transmission mode layer: A telephone control module for performing voice communication with the telephone connected through the asynchronous transmission mode layer; And A split that mixes data generated in the ADSL physical layer and data generated in a telephone control module and delivers the data to the asynchronous transmission mode layer or separates voice data among data input from the asynchronous transmission mode layer and transmits the divided voice data to the telephone control module. And a splitter embedded asymmetric digital subscriber line modem.