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Realization method and system of transmission convergence layer framing in passive optical network

A passive optical network, transmission and convergence layer technology, applied in the field of passive optical networks, can solve the problems of reducing the throughput and QOS of the PON system, and low efficiency of framing, so as to improve the throughput and QOS, and improve the efficiency of framing , the effect of reducing the area

Active Publication Date: 2017-09-15
FENGHUO COMM SCI & TECH CO LTD +1
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  • 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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  • Realization method and system of transmission convergence layer framing in passive optical network
  • Realization method and system of transmission convergence layer framing in passive optical network

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying 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 and convergence layer in GPON is GTC;

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

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

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

[0025] see figure 1 As shown, the implementation method of transmission and 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 of TC framing to 0, all GEM frame lengths include read and unread GEM data frame l...

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Abstract

The invention discloses a realization method and system of transmission convergence layer framing in a passive optical network, and relates to the field of the passive optical network. The method comprises the following steps: fragmenting data frames participating in the TC framing according to an independent development algorithm to obtain the data frames participating in the fragmentation; adding the data frames participating in the fragmentation in a GEM frame header, encapsulating to the GEM frame; and computing the length of an idle frame according to the independent development algorithm when needing to insert the idle frame. The framing of the data frame and the insertion of the idle can be dynamically controlled by using the realization method disclosed by the invention, the framing probability of the data frame is increased as far as possible when guaranteeing the constant linear velocity of the TC framing, the insertion of the idle frame is maximally reduced, and the throughput and the QOS of the whole PON system are improved.

Description

technical field [0001] The invention relates to the field of passive optical networks, in particular to a method and system for realizing frame formation at the transmission and convergence layer in the passive optical network. Background technique [0002] With the development of communication technology, PON (Passive Optical Network, Passive Optical Network) has become a widely used high-speed bandwidth access technology. A PON system generally includes an OLT (Optical Line Terminal, Optical Line Terminal), an ODN (Optical Distribution Network, Optical Distribution Network), and an ONU (Optical Network Unit, Optical Network Unit). In the downlink direction, the OLT broadcasts data to all ONUs through the ODN; in the uplink direction, in order to avoid optical conflicts, time division multiplexing is adopted, and each ONU only transmits data in the time slot authorized by the OLT. In the PON system, regardless of uplink or downlink, data services (such as Ethernet frames) ...

Claims

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Application Information

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Patent Type & Authority Applications(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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