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High-bit-rate digital subscriber line

About: High-bit-rate digital subscriber line is a research topic. Over the lifetime, 516 publications have been published within this topic receiving 8537 citations. The topic is also known as: HDSL & high-bit-rate DSL.


Papers
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Proceedings ArticleDOI
T. Sawano1
16 Apr 1990
TL;DR: An analog-digital hybrid photonic subscriber loop network, which provides video distribution services using analog video optical transmission while providing interactive communication services using ATM (asynchronous transfer mode) digital optical transmission, has been compared with its all-digital counterpart from cost and architecture viewpoints.
Abstract: An analog-digital hybrid photonic subscriber loop network, which provides video distribution services using analog video optical transmission while providing interactive communication services using ATM (asynchronous transfer mode) digital optical transmission, has been compared with its all-digital counterpart from cost and architecture viewpoints. The cost comparison reveals that the per-subscriber cost for the hybrid network is some 30% lower than that for all-digital network. The analysis also suggests that the cost for the photonic subscriber interface unit dominates the per-subscriber cost. The architectural comparison, together with the cost comparison, shows that the hybrid network lends itself to the early introduction of broadband services to subscribers, while the penetration of the all-digital network will have to wait for the establishment of UNI (user-network interface) standards. >

1 citations

Patent
27 Jun 2002
TL;DR: In this article, the authors proposed a subscriber-switching device and method in a system of asymmetrical digital subscriber lines ADSL, which includes multiple subscriber units including multiple subscriber ports, respectively; a redundancy subscriber unit including multiple subscribers ports, a network unit for transmitting data inputted from the multiple subscribers units to networks, a rear unit on a back plane of a shelf for transmitting from at least more than one of the subscribers lines to the subscriber unit, a common line board for connecting the subscriber lines of the rear unit to the redundancy subscriber units through the common line, a
Abstract: The present invention includes a subscriber-switching device and method in a system of asymmetrical digital subscriber lines ADSL. The subscriber-switching device includes multiple subscriber units including multiple subscriber ports, respectively; a redundancy subscriber unit including multiple subscriber ports, a network unit for transmitting data inputted from the multiple subscriber units to networks, a rear unit on a back plane of a shelf for transmitting data inputted from at least more than one of the subscriber lines to the subscriber unit, a common line board for connecting the subscriber lines of the rear unit to the redundancy subscriber unit through the common line, a switching means for switching among the subscriber port of the subscriber unit, the redundancy subscriber unit, and the common line board, and a controller for controlling mutual operation flows among the above units and means. Therefore, data inputted from the subscriber line is continuously serviced to the subscribers through the switched redundancy subscriber unit without data interruption. As a result, the reliability of the transmitting device and the quality of the services can be improved enormously.

1 citations

Patent
24 Apr 1998
TL;DR: In this paper, the system includes subscriber terminals which have at least one subscriber apparatus providing a voice signal and at least another one subscriber equipment providing a data signal, and the connection units are joined using concentrators.
Abstract: The system includes subscriber terminals which have at least one subscriber apparatus providing a voice signal and at least one subscriber apparatus providing a data signal. Analogue subscriber lines are provided between subscriber terminals and digital transmission paths are provided between the telephone exchanges. The analogue transmission channels on the subscriber lines can be used for voice or data transmission. Signal compressors (DK) are provided which are switched off when a signal is received indicating data transmission. Preferably, the compressors are part of subscriber connection units (TSCH). The connection units are joined using concentrators.

1 citations

Proceedings Article
01 Jan 2007
TL;DR: To compete effectively for customer business and to create a future-proof network, carriers and service providers have a critical need for a fiber-fast broadband capability of 50 Mbps to 100 Mbps, a standard by the ITU-T.
Abstract: In an Customer demand for triple-play services is on the rise, and cable operators have responded by adding services such as Internet access, VoIP, Video on Demand (VoD), and High Definition TV (HDTV) to their standard television service. Unfortunately for carriers and service providers looking to compete with cable and even satellite operators, triple-play services require a great deal more bandwidth than what is currently available over last-mile copper loops. To compete effectively for customer business and to create a future-proof network, carriers and service providers have a critical need for a fiber-fast broadband capability of 50 Mbps to 100 Mbps. While extending fiber to every home seems a logical solution, it is not feasible economically or competitively. Very-High-Bit-Rate Digital Subscriber Line 2 (VDSL2), a standard by the ITU-T. The proposed VDSL2 standard increases the spectrum allocation to 30 MHz for higher performance. VDSL2 enables fiber-fast broadband at speeds of up to 100 Mbps symmetrical—fast enough to deliver broadband applications such as the triple play of voice, data, and video.

1 citations

Patent
10 Mar 1999
TL;DR: In this paper, the authors present an integrated services digital network telecommunications installation, which has an interface on the exchange side for connection to a network terminator basic access device (1) or for direct connection to digital exchange (2), with a coupling field and transcoder for bit rate conversion inserted between the opposing interfaces, each provided with a memory for temporary storage of data.
Abstract: The telecommunications installation (3) has an interface on the exchange side for connection to a network terminator basic access device (1), or for direct connection to a digital exchange (2) and an interface on the subscriber side for connection to a number of subscriber devices (4,5), with a coupling field and a transcoder for bit rate conversion inserted between the opposing interfaces, each provided with a memory for temporary storage of data. OF DLRAWING - The drawing shows an integrated services digital network telecommunications installation. Network terminator basic access, 1. Digital exchange, 2. Telecommunications exchange, 3. Subscriber devices, 4, 5.

1 citations

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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20181
20171
20162
20154
20144
20132