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A method and device for communication in the digital user line technology

A digital subscriber line technology, which is applied to devices dedicated to transmitters, devices dedicated to receivers, telephone communications, etc., to achieve the effects of improved spectrum utilization, high reliability, and fast switching speed

Active Publication Date: 2007-10-17
HUAWEI TECH CO LTD
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  • Application Information

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Problems solved by technology

[0009] The purpose of the present invention is to provide a method and system for communication in digital subscriber line technology, which can dynamically adapt the transmission rate according to the noise change of the line, improve the performance of anti-noise, so as to avoid the Various problems (such as dropped calls), especially suitable for situations where the noise suddenly increases significantly in a short period of time

Method used

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  • A method and device for communication in the digital user line technology
  • A method and device for communication in the digital user line technology
  • A method and device for communication in the digital user line technology

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Embodiment Construction

[0073] In order to facilitate those skilled in the art to understand and implement the present invention, embodiments of the present invention are now described with reference to the accompanying drawings.

[0074] As shown in FIG. 2, the present invention discloses a transceiver system in digital subscriber line technology, the system includes: a first transceiver device for obtaining communication performance parameters, when the communication performance parameters reach or exceed a predetermined value, The first transceiver and the second transceiver use a predetermined communication rule to communicate, and the predetermined communication rule is set in the first transceiver, otherwise, use the parameters in the bit table and gain table calculated according to the actual noise to communicate The second transceiver is used to obtain the communication performance parameter, when the communication performance parameter reaches or exceeds a predetermined value, the first trans...

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Abstract

The present invention discloses a method for communication in digital user line techniques. Said method comprises the following steps: obtaining communication performances parameters; a first transmit-receiver device and a second transmit-receiver device performing communications by adopting preconcerted communication rules after the communication performances parameters having reached or exceeding preconcerted values, wherein the preconcerted communication rules are respectively set at the first transmit-receiver device and the second transmit-receiver device. The present invention also discloses a transmit-receiver device for communication in digital user line techniques. According to the present invention, bit tables and gains tables are preconcerted in advance and then stored respectively at the first transmit-receiver device and the second transmit-receiver device. When large broad band noises (such as crosstalk) occur, a quick switching between the bit tables and the gains tables determined in advance is available by utilizing simple message or inquiring-replying mechanism. Since exchanging of bit tables and gains tables is not necessary, the technical scheme in accordance with the present invention is characterized in its quick switching velocity and high reliability. Furthermore, the present invention can improve the spectrum efficiency.

Description

technical field [0001] The present invention relates to a communication technology, in particular to a method and device for communication in digital subscriber line technology. Background technique [0002] After years of development, ADSL (Asymmetric Digital Subscriber Line) technology has developed from the first generation of ADSL to the current ADSL2 (second generation ADSL), ADSL2+ (downstream bandwidth extended ADSL2) and the updated VDSL2 (second generation even High-speed digital subscriber line), the frequency band it uses is gradually increasing, and the corresponding bandwidth is also gradually increasing. ADSL and ADSL2 downlink use the spectrum below 1.1MHz to provide a maximum downlink rate of 8Mbps, ADSL2+ extends the downlink bandwidth to 2.2MHz and can provide a maximum downlink rate of 24Mbps, and VDSL2 even uses up to 30MHz spectrum, which can provide the highest uplink and downlink symmetry 100Mbit / s access rate. The various digital subscriber line tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M11/06H04M3/30
CPCH04L1/0036H04M3/2209H04L1/0033H04B3/32H04M11/062H04L1/0002H04L1/0025H04M3/2227Y02B60/31Y02D30/50
Inventor 石清泉
Owner HUAWEI TECH CO LTD
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