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Uplink and downlink transmission method of broadband optical access data

A technology for accessing data and transmission methods, applied in transmission systems, multiplexing system selection devices, electrical components, etc., can solve problems such as incompatibility, high operation and maintenance and investment costs, and complex network operation and maintenance, etc., to achieve Guarantee efficiency and meet the effect of compatibility with high efficiency

Active Publication Date: 2015-06-10
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Both 10G EPON and XGPON meet the requirements of optical access networks, but because they are promoted by different standardization organizations, they cannot be compatible in the same optical distribution network, and they develop independently, resulting in complex network operation and maintenance, high operation and maintenance and investment costs

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  • Uplink and downlink transmission method of broadband optical access data
  • Uplink and downlink transmission method of broadband optical access data
  • Uplink and downlink transmission method of broadband optical access data

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Embodiment Construction

[0044] In order to make the purpose, content, and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0045] A 10G EPON and XGPON network fusion solution provided by the present invention uses time-division multiplexing to transmit two kinds of information on the physical layer to ensure full compatibility with the 10G EPON standard, and only adds physical layer coding to XGPON.

[0046] Wherein, the downlink transmission method of broadband optical access data provided by the present invention is specifically applied in a PON access network system, and the PON access network system includes an Optical Line Terminal (OLT) and an Optical Network Unit (Optical Net Unit, ONU), wherein, the central office downlink information acquisition and storage processing, the central office transmission authorization, the central offi...

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Abstract

The invention relates to an uplink and downlink transmission method of broadband optical access data, belonging to the technical field of data transmission in broadband optical access network. The method provided in the invention aims at compatibly transmitting 10G EPON and XGPON standard information in uplink and downlink directions by an optical distribution network. In downlink transmission process of the optical access data, physical layer structure of XGPON data is modified so that the XGPON data and 10G EPON data can be transmitted in a generally-used time division multiplexing manner. Thus, the 10G EPON data and the XGPON data can be transmitted compatibly in the downlink direction by the optical distribution network, thereby satisfying a demand for high efficient compatibility. In addition, in the uplink direction, an authorization mechanism is utilized to determine the serial number of an optical network unit which transmits uplink data, the data transmitting time of the authorized optical network unit, and length of the transmitted data, thereby being able to guarantee efficiency of data transmitting and data analyzing in the uplink direction.

Description

technical field [0001] The present invention relates to the technical field of broadband optical access network data transmission, in particular to a method of using the existing 10G EPON data structure to construct XGPON downlink information physical layer coding and realize the downlink transmission and utilization authorization of 10G EPON technology and XGPON data in TDMA mode The method of uplink transmission of the mechanism. Background technique [0002] The access network occupies a crucial position in the entire network. PON (Passive Optical Network, Passive Optical Network) technology has become an ideal and long-term solution for the access network recognized by the industry due to its large capacity, high reliability and low cost. . The currently standardized PON technologies include APON (Asynchronous Passive Optical Network, asynchronous passive optical network) based on ATM (Asynchronous Transfer Mode, asynchronous passive optical network), and GPON (Gigabit-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04L29/06
Inventor 陈雪王道王立芊纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
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