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Ethernet passive light network system

A technology of passive optical network and Ethernet, applied in the field of passive optical network system, can solve the problems of frame loss and Ethernet frame loss

Inactive Publication Date: 2006-03-01
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] (3) The third condition is specified under the assumption that the destination address is found in the address table, but no destination address is specified for the port receiving the frame
In addition, the network bridge connected to the OLT 110 does not transmit the Ethernet frame to the second user terminal 144 during downlink transmission, resulting in the loss of the Ethernet frame
Namely, as mentioned earlier, PON systems implemented in conventional bridge networks result in frame loss due to the fundamental condition

Method used

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  • Ethernet passive light network system
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Embodiment Construction

[0028] Now, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same or similar elements are denoted by the same reference numerals even though they are described in different drawings. For the purpose of clarity and simplicity, detailed descriptions of known functions and constructions incorporated herein are omitted when it may make the subject matter of the present invention unclear.

[0029] In accordance with the teachings of the present invention, an extra field of the "vLink" tag is added to the conventional Ethernet frame. The "vLink" tag includes a 1-bit mode field and a 15-bit PHY_ID field. The mode field is classified into a P2P mode field and a Single Copy Broadcast (SCB) mode field according to the type of emulation mode. Additional patterns can also be defined if desired. The P2P mode is used to perform P2P transmission in the Ethernet PON system, and the SCB mode is used ...

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Abstract

Ethernet Passive Optical Network (PON) system is provided and includesan Optical Line Termination (OLT) and a plurality of Optical Network Units (ONUs) connected to the OLT, and the system implements a Peer-to-Peer (P2P) transmission between ONU-side objects controlled by the OLT. A PON tagging Ethernet frame for the P2P transmission includes a Destination Address (DA) field, a Source Address (SA) field, a mode field indicating an emulation mode, and a PHY_ID field indicating identifiers of the ONU-side objects, and a data field. The OLT further includes: a multiplexing layer for transmitting a received PON tagging Ethernet frame to an upper layer over a logic port associated with a corresponding PHY_ID field, and a bridging function layer for converting information of the PHY_ID field into PHY_ID information corresponding to a destination ONU-side object by referring to the DA field when an emulation mode of a frame received through the logic port is the P2P transmission mode and for transmitting the converted PHY_ID information to a corresponding ONU through a logic port associated with the converted PHY_ID information.

Description

technical field [0001] The present invention relates to a passive optical network (PON) system, and more particularly to an Ethernet PON (EPON) system. Background technique [0002] Generally, a PON system has a structure in which a single Optical Line Terminal (OLT) is connected to a plurality of ONUs (Optical Network Units) on an Optical Distribution Network (ODN). In this structure, all nodes are allocated in the form of a tree structure. [0003] An exemplary known PON system is an Asynchronous Transfer Mode (ATM)-PON style system. Currently, point-to-point Gigabit Ethernet technology and MAC technology of ATM-PON have been standardized as described in IEEE 802.3z and ITU-T (International Telecommunication Union-T) G.983.1. ATM-PON is described in U.S. Patent No. 5,978,374, entitled "Protocol for Data Communication Over Point-to-Multipoint Passive Optical Networks," issued November 2, 1999, by Gigad Ghaib et al., incorporated herein by reference. An example of MAC tec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/66H04L12/24H04B10/20H04L12/44H04L12/28H04Q11/00
CPCH04Q11/0071H04Q11/0067H04Q11/0066H04L12/28
Inventor 宋在涓金镇熙金娥正李民孝林世伦金洙亨
Owner SAMSUNG ELECTRONICS CO LTD