Method and system for realizing transmission and aggregation layer framing in passive optical network

A passive optical network, transmission and convergence layer technology, applied in the field of passive optical network, can solve the problems of low efficiency of framing, reduce PON system throughput and QOS, etc., to improve framing efficiency, throughput and QOS. , reduce the effect of data frame buffering

Active Publication Date: 2019-06-21
FENGHUO COMM SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, idle frames are randomly inserted, and the frame-up efficiency is low, thereby reducing the throughput and QOS (Quality of Service) of the entire PON system.

Method used

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  • Method and system for realizing transmission and aggregation layer framing in passive optical network
  • Method and system for realizing transmission and aggregation layer framing in passive optical network
  • Method and system for realizing transmission and aggregation layer framing in passive optical network

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Embodiment Construction

[0019] The present invention will be further described in detail below in conjunction with the drawings and embodiments.

[0020] The passive optical network in the embodiment of the present invention includes:

[0021] GPON (Gigabit-capable passive optical networks), the transmission convergence layer in GPON is GTC;

[0022] XG-PON (10-Gigabit-capable passive optical networks), the transmission convergence layer in XG-PON is XGTC;

[0023] NG-PON2 (40-Gigabit-capable passive optical networks), the transmission convergence layer in NG-PON2 is NG-PON2TC;

[0024] XGS-PON, its transmission convergence layer is XGS-PON TC.

[0025] See figure 1 As shown, the implementation method of transmission convergence layer framing in the passive optical network in the embodiment of the present invention includes the following steps:

[0026] S1: Set all GEM frame lengths in TC framing to 0. All GEM frame lengths include the read and unread GEM data frame lengths and GEM idle frame lengths, and go to ...

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Abstract

Disclosed are an implementation method and system for framing in a transmission convergence layer in a passive optical network, wherein same relate to the field of passive optical networks. The steps of the method are as follows: fragmenting a data frame involved in TC framing according to a self-developed algorithm, so as to obtain a data frame involved in the fragmentation; after a GEM frame header is added to the data frame involved in the fragmentation, packaging same into a GEM frame; and calculating the length of an idle frame according to the self-developed algorithm when the idle frame needs to be inserted. The present invention can dynamically control the framing of data frames and the insertion of the idle frames, the framing probability of the data frames can be increased as much as possible, and the insertion of idle frames can be reduced to the greatest extent, while guaranteeing a constant linear rate of the TC framing, thereby improving the throughput and QOS of the entire PON system.

Description

Technical field [0001] The present invention relates to the field of passive optical networks, in particular to a method and system for implementing transmission convergence layer framing in a passive optical network. Background technique [0002] With the development of communication technology, PON (Passive Optical Network) has become a widely used high-speed bandwidth access technology. The PON system generally includes an OLT (Optical Line Terminal), an ODN (Optical Distribution Network), and an ONU (Optical Network Unit). In the downstream direction, the OLT broadcasts data to all ONUs via ODN; in the upstream direction, in order to avoid optical collisions, time division multiplexing is used, and each ONU only transmits data in the time slot authorized by the OLT. In the PON system, no matter upstream or downstream, data services (such as Ethernet frames) and other services (such as OMCI management frames) are finally encapsulated into TC (transmission convergence layer) f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0062H04Q2011/0086H04Q2011/0088
Inventor 李祥辉
Owner FENGHUO COMM SCI & TECH CO LTD
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