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Ciphering mode switching method for G bit passive optical fiber network system

A passive optical network and encryption mode technology, applied in the field of encryption mode switching, can solve the problem that the ONU cannot receive downlink messages correctly, and achieve the effect of avoiding the loss of downlink messages

Inactive Publication Date: 2011-03-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no encryption mode switching mechanism in the existing G984.3 standard, and how the OLT and ONU switch between the encryption modes is not described. If the encryption mode switching of the OLT and ONU is not synchronized, it may cause the ONU to fail to receive some downstream messages correctly.

Method used

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  • Ciphering mode switching method for G bit passive optical fiber network system
  • Ciphering mode switching method for G bit passive optical fiber network system
  • Ciphering mode switching method for G bit passive optical fiber network system

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Embodiment Construction

[0022] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] refer to figure 1 As shown, the encryption mode switching method in the GPON system is described in detail.

[0024] The encryption mode switching method in the GPON system is combined with the key update process, and the steps include:

[0025] Step S101: the OLT notifies the ONU to change the encryption mode;

[0026] Step S102: the OLT and the ONU perform a key update process;

[0027] Step S103: The OLT and the ONU perform encryption mode switching according to the multiframe during the key update process.

[0028] refer to figure 2 As shown, the present invention is described in detail in conjunction with specific application scenarios.

[0029] Application scenario 1, changing from non-encrypted to encrypted, the specific implementation steps are as follows:

[0030] 1. The OLT notifies the ONU to change the encryption mode....

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Abstract

The invention discloses a method for switching an encrypting mode in a gigabit passive fiber-optical network system, which comprises the following steps: informing a light network unit to change the encrypting mode by a light transmission line terminal, carrying out the key updating to a light transmission line terminal and the light network unit, and generating multi-frame numbers, switching theencrypting mode on multi-frames which are corresponding to the multi-frame numbers, by the light transmission line terminal and the light network unit. The encrypting mode switching mechanism of the invention can synchronously switch the encrypting mode of an OLT and an ONU through matching with the key updating process, and can prevent possible loss of down-bound information.

Description

technical field [0001] The invention relates to a broadband optical access technology, in particular to an encryption mode switching method in a gigabit passive optical fiber network system. Background technique [0002] In Gigabit Passive Optical Network (GPON, Gigabit Passive Optical Network) system, multiple Optical Network Units (ONUs) can be connected to one Optical Transmission Line Terminal (OLT), and the downlink message from OLT to ONU is sent in the form of broadcast , considering security, the downlink message between OLT and ONU can be encrypted. [0003] In the process of changing the encryption mode, the OLT notifies the ONU to modify the encryption mode (encryption or non-encryption) by sending PLOAM (physical layer OAM), and then the OLT and ONU each perform encryption mode switching, that is, switching from encryption to non-encryption, or never encryption Switch to encryption. [0004] However, there is no encryption mode switching mechanism in the existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/16H04B10/12H04L12/28H04L9/00H04B10/85
Inventor 张伟良
Owner ZTE CORP