Two and three-stroke discovery process for 10G-EPONs

A technology of Ethernet and speed, applied in the field of optical network unit

Inactive Publication Date: 2011-04-13
NOKIA SOLUTIONS & NETWORKS OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The schemes proposed so far are similar to the two-stroke mechanism and are limiting the process

Method used

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  • Two and three-stroke discovery process for 10G-EPONs
  • Two and three-stroke discovery process for 10G-EPONs
  • Two and three-stroke discovery process for 10G-EPONs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A PON with an OLT and three different ONUs is shown.

[0024] The OLT present in the system is a device that supports dual rates (both upstream and downstream channels), where the downstream transmissions in 1G and 10G channels are performed in parallel and independently on different optical signal wavelengths, while the upstream channel is composed of 1G and 10G data rates are shared.

[0025] Three types of ONUs are supported, namely, symmetric 1G / 1G, symmetric 10G / 10G, and asymmetric 10G / 1G. In this configuration, ONUs can be discovered during two-stroke and three-stroke discovery.

[0026] The discovery process operates on figure 2 described in. The messages of three types of ONUs are shown, namely symmetric 1G / 1G, symmetric 10G / 10G and asymmetric 10G / 1G.

[0027] The extended discovery process may look complicated, but its operation is relatively simple to follow.

[0028] First, the OLT-based discovery agent initializes the discovery process by all...

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Abstract

The invention relates to a method to discover Optical Network Units (ONU) with different speed capabilities in an Ethernet Passive Optical Network (EPON) by an Optical Line Termination (OLT), where logical links in the network are identified by Logical Link IDs, and the OLT can transmit and receive data with lGbit / s-speed (IG) and 10 Gbit / s-speed (10G), and the discovery process is handled in the OLT by a Multi Point Con not trol Process (MPCP), which exchanges messages as Data Units (MPCPDU) with the ONUs. This is achieved by extending the standard MPCPDUs in a way, that backward compatability is as- sured.

Description

technical field [0001] The present invention relates to a method for discovering optical network units (ONUs) with different rate capabilities in an Ethernet Passive Optical Network (EPON), wherein the Optical Line Termination (Optical Line Termination) OLT can Rate (Gbit / s-speed) and 10 Gbit / s rate to transmit and receive data. Background technique [0002] There is a high demand for seamless support of legacy equipment in EPON, allowing carriers to utilize already deployed 1 Gbit / s ONUs while increasing channel capacity for some customers. This requires full coexistence of 1 Gbit / s and 10 Gbit / s equipment, sharing the same physical PON equipment. [0003] Since 1 Gbit / s symmetric (legacy), 10 Gbit / s downstream / 1 Gbit / s upstream (emerging asymmetric), and symmetric 10 Gbit / s (emerging) ONUs in the same PON For on-device coexistence, it is necessary to extend the Discovery Process currently defined in IEEE 802.3-2005 Clause 64 to allow correct operation in a multi-data-rat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/18H04Q11/00
CPCH04Q2011/0079H04L41/12H04Q2011/0073H04Q11/0067H04Q2011/0088H04L12/413
Inventor N·博格斯M·哈杜策尼亚P·M·蒙泰罗H·西尔瓦
Owner NOKIA SOLUTIONS & NETWORKS OY
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