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1. (WO2010115378) METHOD, APPARATUS AND SYSTEM FOR DATA TRANSMISSION ON DIGITAL SUBSCRIBER LINE

Pub. No.:    WO/2010/115378    International Application No.:    PCT/CN2010/071652
Publication Date: Fri Oct 15 01:59:59 CEST 2010 International Filing Date: Sat Apr 10 01:59:59 CEST 2010
IPC: H04L 1/16
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
WU, Anni
吴安妮
Inventors: WU, Anni
吴安妮
Title: METHOD, APPARATUS AND SYSTEM FOR DATA TRANSMISSION ON DIGITAL SUBSCRIBER LINE
Abstract:
A method, apparatus and system for data transmission on digital subscriber line are provided. The method comprises the following steps. Service data is classified into retransmission service data and non-retransmission service data on retransmission layer located at Physical Media Specific Transmission Convergence (PMS-TC) layer. Resources for the retransmission service data and the non-retransmission service data are allocated respectively and the two data are encapsulated into data units according to the allocated resources. A transmitting end transmits the data unit bearing the service data encapsulated in. The transmitting end receives a retransmission request which bears information about the data unit needed to be retransmitted and is requested according to the judgment of error code and retransmission service type. The transmitting end transmits the corresponding data unit which bears the retransmission service data requested to be retransmitted. With the application of the invention, not only line error rate and latency of system for some data can be reduced but also Quality of Experience (QoE) can be improved.