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Upgrading method optical network unit (ONU) in Ethernet passive optical network (EPON)

A frequency and timer technology, applied in the field of ONU upgrade system in EPON, can solve problems such as message loss and achieve the effect of improving reliability

Active Publication Date: 2013-01-09
PHICOMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the use of layer 2 network transmission, when the network is congested and busy, it is easy to cause packet loss. In order to avoid packet loss during the download process of ONU software, "China Telecom EPON Equipment Technical Requirements" It discloses the downloading process of ONU software using the timeout retransmission mechanism, but there is no explanation for the process of Activate and Commit software mirroring; as an important condition for the reliability of the software upgrade process of ONU, how to ensure the smooth progress of the process of Activate and Commit software mirroring , has become a technical problem to be solved

Method used

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  • Upgrading method optical network unit (ONU) in Ethernet passive optical network (EPON)
  • Upgrading method optical network unit (ONU) in Ethernet passive optical network (EPON)

Examples

Experimental program
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Embodiment 1

[0031] Such as figure 1 As shown, the Activate command is required to set the ONU, and the specified number of consecutive resend commands is set to 3; first, the upgrade status of the ONU is queried through the timer task, and the OLT sends the command only when the upgrade status of the ONU is completed. The Activate command is sent to the ONU, and the Activate timer is started only when the Activate action is sent for the first time; secondly, after the Activate command is sent, the OLT judges whether it has received the ONU’s information about successful reception within the scheduled time interval for timeout retransmission The response to the Activate command, if the OLT receives the response, it means that the Activate command action is complete, and continues to execute the next action; if the OLT does not receive the response from the ONU about successfully receiving the Activate within the scheduled time interval for timeout retransmission, further Determine whether ...

Embodiment 2

[0033] On the basis of Example 1, as figure 2 As shown, the Commit command is required to set the ONU, and the specified number of consecutive resend commands is also set to 3; first, through the timer task, query the upgrade status of the ONU, and the OLT will send the command only when the upgrade status of the ONU is restarting. The Commit command is sent to the ONU, and the Commit timer is only started when the Commit action is sent for the first time; secondly, after the Commit command is sent, the OLT judges whether it has received the ONU’s information about successful reception within the scheduled time interval for timeout retransmission. The response of the Commit command, if the OLT receives the response, it means that the Commit command action is completed, and the next action will be executed; Determine whether the number of consecutive retransmissions within the specified time is less than or equal to the specified number of retransmissions 3, if the number of r...

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Abstract

The invention relates to an upgrading method of the Ethernet passive optical network (EPON) and particularly discloses an upgrading method of an optical network unit (ONU) in the EPON. The method includes starting a corresponding timer according to the upgrading state of the ONU when the ONU requires Activate or Commit, waiting for response of the Activate or the Commit of the ONU in set time, indicating that the action is finished successfully if the response is received in the set time and transmitting the Activate or Commit command again if the response is not received in the set time. Further, the action is finished successfully if response is received in continuous retransmission times in the set time. If the response is not received in the continuous retransmission times in the set time, the connection is cut off, and fault information is reported to a webmaster. The upgrading method further ensures smooth proceeding of the software image processes of Activate and Commit and effectively improves reliability of the ONU in the software upgrading process.

Description

technical field [0001] The invention relates to an EPON upgrading method, in particular to an EPON ONU upgrading system. Background technique [0002] At present, in the EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network) access system, the software upgrade of the ONU (optical node, Optical Network Unit) mainly includes the download process of the ONU upgrade software and the mirroring process of the Activate and Commit software; , the communication between OLT (optical line terminal, optical line terminal) and ONU adopts the two-layer Ethernet protocol, and OAM (operation, management and maintenance, Operation) in MPCP (Multi-Point Control Protocol) Administration and Maintenance) channel as the carrier, which enables the OLT to encapsulate the upgrade command and upgrade image in the OAM data frame for transmission (see "Technical Requirements for China Telecom EPON Equipment"). [0003] Due to the use of layer 2 network transmission, when the networ...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/24
Inventor 孙大宏汤勇刘启林李岳政
Owner PHICOMM (SHANGHAI) CO LTD