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Method, device and system for transmitting data of digital subscriber line

A technology of digital subscriber line and data transmission method, applied in the field of communications, can solve problems such as user complaints and affect user QoE, and achieve the effects of improving QoE, solving the impact of impulse noise, and reducing line bit error rate

Active Publication Date: 2010-10-13
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still services in the network that require low bit error rate and high delay (such as VoIP, etc.). QoE, which may even lead to user complaints

Method used

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  • Method, device and system for transmitting data of digital subscriber line
  • Method, device and system for transmitting data of digital subscriber line
  • Method, device and system for transmitting data of digital subscriber line

Examples

Experimental program
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Embodiment Construction

[0031] Such as figure 1 As shown, the data transmission system of the digital subscriber line of the embodiment of the present invention comprises: client equipment 12 and central office equipment 16, and client equipment 12 is digital subscriber line modem usually, also can be the DSL transceiver of other forms, its Linked with the central office equipment 16, the client equipment 12 can send data to the central office equipment 16, and can also receive and process the data sent by the central office equipment 16 at the same time. It further includes a casing, a sending unit and a receiving unit, the sending unit and the receiving unit are arranged in the casing for sending and receiving data. The central office equipment 16 is specifically a Digital Subscriber Line Access Multiplexer (DSLAM, Digital Subscriber Line Access Multiplexer) or other forms of DSL transceivers, and the Digital Subscriber Line Access Multiplexer also includes a housing, a sending unit and a receiving...

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Abstract

The invention discloses a method, a device and a system for transmitting data of a digital subscriber line. The method comprises the following steps of: dividing service data into retransmission service data and non-retransmission service data on a retransmission layer positioned on a PMS-TC layer; allocating resources to the retransmission service data and the non-retransmission service data respectively, and packing the data to form data units according to the allocated resources; sending the data units loading the service data by a sender; receiving a retransmission request for loading the to-be-retransmitted information of the data units after the judgment of error codes and retransmission service types by the sender; and retransmitting the corresponding data units by the sender, wherein the data units load the retransmission service data requested for retransmission. The method, the device and the system can reduce the bit error rate of the line, reduce the time delay of the system on partial data, and improve the QoE at the same time.

Description

technical field [0001] The present invention relates to the communication field, in particular to a data transmission method, device and system of a digital subscriber line. Background technique [0002] Digital Subscriber Line (DSL, Digital Subscriber Line) technology is a high-speed transmission technology for data transmission through telephone twisted-pair wires, that is, unshielded twisted-pair wires. Yes, the electromagnetic interference between the wire pairs will cause bit errors, resulting in a decrease in the transmission quality of the line. [0003] In the existing DSL system, error correction codes are usually used to correct the bit errors generated by the DSL line in the transmitted data, such as interleaving plus RS (Reed-Solomon) coding, using the additional coding gain provided by RS coding to reduce impulse noise The resulting impact, thereby improving the stability of the DSL system. However, with the increase of the DSL bandwidth and the increase of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/00H04L12/56H04M11/06
CPCH04L2001/0098H04L1/1887
Inventor 吴安妮
Owner HUAWEI TECH CO LTD
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