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Billibit Ethernet passive light network system and medium access control method

A technology of passive optical network and bit Ethernet, which is applied in the field of GE-PON system and its media access control, and can solve the problem of wasting bandwidth of GE-PON system

Inactive Publication Date: 2005-11-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, GE-PON systems have the downside of wasting bandwidth when there is no upstream / downstream data

Method used

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  • Billibit Ethernet passive light network system and medium access control method
  • Billibit Ethernet passive light network system and medium access control method
  • Billibit Ethernet passive light network system and medium access control method

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Embodiment Construction

[0024] 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 components are denoted by the same reference numerals even if they are shown in different drawings. For clarity and brevity, detailed descriptions of known functions and configurations introduced herein will be omitted since they would obscure the subject matter of the present invention.

[0025] 2a and 2b are block diagrams illustrating a GE-PON system according to a preferred embodiment of the present invention. With reference to Fig. 2 a and 2b, OLT100, ODN102 constituted by the optical splitter as passive component, a plurality of ONU104i (wherein, i=a, b and c; And a, b and c represent natural number), and the connection between them The structure is similar to the corresponding elements shown in Figures 1a and 1b. The GE-PON system shown in Fig. 2 a or 2b comprises an OLT as the toll central office, a p...

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PUM

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Abstract

A GE-PON (Gigabit Ethernet Passive Optical Network) system and media access control method for the same are disclosed. In the GE-PON system, by employing MAC attributes of the gigabit Ethernet frames, an OLT (Optical Line Termination) transmits a downstream window containing both a control frame having timeslot position and size information in association with at least two ONUs and Ethernet frames to an ODN (Optical Distribution Network). The OLT analyzes contents of RAUs in an upstream window transmitted from the ONUs in a TDMA method and received from the ODN, and permits timeslot position and size corresponding to each of the ONUs. A plurality of ONUs, connected to the ODN, have their respective timeslot position and size allocated in response to their respective information contained in the control frame of the downstream window. RAU frames are transmitted having queue information and Ethernet frames associated with the allocated timeslots. As a result, by the above MAC structure of the GE-PON system, the OLT can be quickly intercommunicated with a plurality of ONUs.

Description

field of invention [0001] The present invention relates to a passive optical network (PON) system, in particular to a GE-PON (gigabit Ethernet frame passive optical network) system and a medium access control (MAC) method thereof. Background technique [0002] Typically, PON systems are configured to have passive splitters or WDM (wavelength division reuse) components. In this type of configuration, all nodes are distributed in a bus or tree structure, forming an overall topology. ATM (Asynchronous Transfer Mode)-PON is a known technology in the art as a typical PON system, and its MAC technology is described in detail in ITU-T (International Telecommunication Union-T) G.983.1. [0003] U.S. Patent No. 5,978,374, issued November 2, 1999, entitled "PROTOCOL FOR DATA COMMUNICATION OVER APOINT-TO-MULTIPOINT PASSIVE OPTICAL NETWORK" and Conventional ATMs are described in Korean Patent Publication No. 1999-70901, published on September 15, 1999, entitled "METHOD FOR IMPLEMENTI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J3/00H04L12/44H04Q11/00
CPCH04Q11/0066H04Q2011/0064H04Q11/0067H04B10/27H04B10/25
Inventor 崔道仁吴润济李民孝张顺镐成焕珍朴泰诚
Owner SAMSUNG ELECTRONICS CO LTD
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