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Auxiliary node equipment in EPON (Ethernet passive optical network)

A technology for auxiliary nodes and equipment, which is applied in the field of optical networks, can solve problems such as bandwidth waste, and achieve the effects of improving use efficiency, simple structure, and easy implementation

Active Publication Date: 2012-06-13
CHONGQING UNIV OF POSTS & TELECOMM
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: Aiming at the problem of bandwidth waste caused by a large amount of redundant data in the downlink transmission of Ethernet Passive Optical Net (EPON), the present invention proposes to add a Auxiliary node, which supports the elimination of downlink redundant data and uses the released bandwidth resources to transmit effective information, which greatly improves the use efficiency of downlink bandwidth resources

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  • Auxiliary node equipment in EPON (Ethernet passive optical network)
  • Auxiliary node equipment in EPON (Ethernet passive optical network)
  • Auxiliary node equipment in EPON (Ethernet passive optical network)

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[0015] The implementation of the present invention will be further described below with reference to the accompanying drawings and specific examples.

[0016] The topology of the multi-cell Ethernet Passive Optical Network (EPON) with two-stage optical splitting after the auxiliary node is added is as follows: figure 1 shown. Like the traditional EPON network, the optical line terminal (OLT) uplinks to the backbone network or the Internet, and the optical network unit (ONU) downlinks to common users, such as companies, hotels, schools, etc. Office unit. In the figure, the auxiliary contact is at the position of the optical splitter and combiner of the community in the original EPON network. It is connected to the backbone optical fiber of the community, and multiple optical fibers are connected to each ONU in the community. The downlink data is sent from the OLT in the form of broadcast, and reaches each auxiliary node after passing through the optical splitter and combiner....

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Abstract

The invention provides auxiliary node equipment in the EPON (Ethernet passive optical network), which relates to the field of the Ethernet passive optical network in the optical network and aims to solve the problem of a great quantity of redundant information in download transmission of the EPON SYSTEM and can realize data transmission by supporting recycling time slot resources used by redundant information, delete download information, extract communication data among ONUs (optical network units) in small areas in uploading data and utilize the time slot resources released from the redundant information to transmit the extracted communication data among ONUs in the small areas and 'resource data' stored in auxiliary nodes. The node structure of the auxiliary node equipment in the EPON supports recycling of the time slot resources occupied by the download redundant information, service efficiency and download throughput of the download band width can be effectively improved, and transmission time delay of communication data among the ONUs inside the small areas can be reduced.

Description

technical field [0001] The present invention relates to the field of optical networks, in particular to the technology of Ethernet Passive Optical Net (EPON) in the optical network. technical background [0002] With the development of the economy and the advancement of science and technology, people's demand for information is increasing day by day, which puts unprecedented pressure on the data carrying capacity of the existing network, making broadband an inevitable trend in the development of the next generation network. In recent years, the backbone network has developed rapidly and can basically meet the needs of network broadband. However, the access network between the backbone network and users has developed slowly and has become a bottleneck in network development. EPON adopts passive equipment and carries the Ethernet protocol on the passive optical network structure. It has the common characteristics of both Ethernet and passive optical network. It has mature tech...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/12H04B10/25
Inventor 王汝言刘祖奇刘重洋吴大鹏
Owner CHONGQING UNIV OF POSTS & TELECOMM
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