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Data link protection method and system based on load sharing mode

A load sharing and data link technology, applied in the direction of digital transmission system, selection device of multiplexing system, transmission system, etc. question

Active Publication Date: 2011-02-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still two problems in the load sharing method: first, the transmission distance between the OLT and the ONU in the PON system is up to 20KM. The difference in transmission delay makes the order of data packets confusing; secondly, since the PON system is a point-to-multipoint network, for uplink data, the available bandwidth of each ONU is dynamically changed, so in the traditional The static load sharing algorithm used in the point-to-point network will no longer be applicable

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  • Data link protection method and system based on load sharing mode
  • Data link protection method and system based on load sharing mode
  • Data link protection method and system based on load sharing mode

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Embodiment Construction

[0038] The basic idea of ​​the present invention is: when the uplink data is transmitted, after the ONU receives the uplink data message through the logical port, it transmits the uplink data message to the buffers of the two physical ports corresponding to the logical port according to the dynamic load sharing algorithm, and buffers each The uplink data packets in the package are encapsulated and transmitted to the OLT; the OLT reorders the received uplink data packets and transmits them to the upper layer equipment through the uplink port; during the downlink data transmission, the OLT receives the downlink data packets through the logical port Then, according to the static load sharing algorithm, it is transmitted to the caches of the two physical ports corresponding to the logical port, and the downlink data packets in the respective caches are encapsulated and then transmitted to the ONU; the ONU reorders the received downlink data packets After that, it is transmitted to ...

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Abstract

The invention discloses a data link protection method and system based on a load sharing mode. During upstream data transmission, after receiving upstream data messages through logic ports, an ONU (Optical Network Unit) transmits the upstream data messages into buffer memories of two physical ports corresponding to the logic ports according to the dynamic load sharing algorithm, and transmits the upstream data messages to an OLT (Optical Line Terminal) after encapsulating the upstream data messages in the respective buffer memories; the OLT transmits the upstream data messages to host equipment through upper ports after reordering the upstream data messages; during downstream data transmission, after receiving downstream data messages through the logic ports, the OLT transmits the downstream data messages into the buffer memories of the two physical ports corresponding to the logic ports according to the static load sharing algorithm, and transmits the downstream data messages to the ONU after encapsulating the downstream data messages in the respective buffer memories; and the ONU transmits the downstream data messages to user side equipment through user side ports after reordering the downstream data messages. The invention can effectively improve the transmission efficiency of a main equipment link of a PON (Passive Optical Network) system, and can increase the system bandwidth.

Description

technical field [0001] The invention relates to a data link protection technology of a passive optical network (PON, Passive Optical Networks) system, in particular to a data link protection method and system based on a load sharing mode. Background technique [0002] The PON system is a point-to-multipoint network system. The network element equipment in the PON system includes: Optical Line Terminal (OLT, Optical Line Terminal), Passive Optical Network Unit (ONU, Optical Network Unit) and Passive Optical Network A terminal (ONT, Optical Network Termination); wherein, the OLT is the equipment at the central office side, and the ONU and the ONT are both equipment at the user side. OLT and ONU / ONT are connected by Optical Distribution Network (ODN, Optical Distribution Network). ONU provides direct or remote user-side interface. The ONU with the user port function, the ONU mentioned later in this article includes the ONT. [0003] In the optical distribution network of the ...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/56
CPCH04Q11/0062H04Q2011/0081H04L45/245H04L45/28H04Q11/0067
Inventor 曾定洲
Owner ZTE CORP