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Method for managing key of GPON system

A key management and key technology, applied in the field of key management of GPON systems

Active Publication Date: 2011-05-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The current key inconsistency between the OLT and the ONU will directly cause the encrypted data sent by the OLT to be unable to be correctly decrypted by the ONU, and further cause the related business of the ONU to be abnormal
ITU-T G.984.x does not describe the abnormal situations and their handling methods during the key exchange process, nor does it describe the current key inconsistency between the OLT and the ONU, nor does it provide information about the OLT and the ONU. Consistency detection method between current keys

Method used

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  • Method for managing key of GPON system
  • Method for managing key of GPON system
  • Method for managing key of GPON system

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Embodiment Construction

[0035] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0036] Such as figure 1 As shown, the current key consistency detection process of the present invention comprises the following steps:

[0037] 1. Trigger the current key consistency detection between OLT and ONU under certain conditions;

[0038] 2. The OLT sends the current key query command to the ONU, waits for the ONU to respond and sends the current key;

[0039] 3. If the ONU receives the current key query command from the OLT, read the current key in the ONU local active_key_register register and send it to the OLT;

[0040] 4. If the OLT does not receive the current key sent by the ONU, it considers that the consistency check fails, and the OLT handles the consistency check failure;

[0041] 5. If the OLT receives the current key sent by the ONU, it compares it with the local current key of the OLT, and performs corresponding processing ac...

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Abstract

The invention relates to a key management method for a GPON (Gigabit Passive Optical Network) system, comprising the following steps: triggering in a certain trigger condition and testing the consistency of the current keys between OLT (Optical Line Terminal) and ONU (Optical Network Unit). The consistency test comprises the following steps: (1) the OLT sends the current key inquiry command to the ONU; (2) the ONU reads the current key in a local register and sends the current key to the OLT; (3) if the current key sent by the ONU is not received by the OLT, the consistency test fails and theOLT carries out the consistency test failure handling; if the OLT receives the current key sent by the ONU, the current key sent by the ONU and the current key in the local register of the OLT are compared, and then correspondent processing is carried out according to the comparing result; thus reducing business abnormality risk caused by inconsistency of the current keys.

Description

technical field [0001] The invention belongs to the technical field of communication, and relates to a key management method of a GPON (Gigabit Passive Optical Network, Gigabit Passive Optical Network) system. Background technique [0002] GPON is a new generation of broadband passive optical integrated access technology based on the ITU-T G.984.x standard. The system usually consists of an OLT (Optical Line Terminal) on the office side and an ONU (Optical Network Unit) on the user side. Optical Network Unit) / ONT (Optical Network Termination, Optical Network Terminal) and ODN (Optical Distribution Network, Optical Distribution Network). ODN is composed of single-mode optical fiber, optical splitter, optical connector and other passive optical components, providing optical transmission medium between OLT and ONU. ODN is usually a point-to-multipoint structure, that is, one OLT is connected to multiple ONUs. The data sent by the OLT to the ONU is called downlink data, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/08H04J3/16H04L12/28
CPCH04L9/0891
Inventor 张伟良夏顺东
Owner ZTE CORP