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
CN101860422AActive Publication Date: 2010-10-13HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2010-10-13

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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.
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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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