An Encryption Method for Multiple Access Passive Optical Network

A technology of passive optical network and encryption method, which is applied in the encryption field of multi-access passive optical network, can solve the problem of low security of multi-access passive optical network, and achieve strong confidentiality and enhanced security degree, high confidentiality effect

Inactive Publication Date: 2020-08-04
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the low security problem of the existing digital filter multiple access passive optical network

Method used

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  • An Encryption Method for Multiple Access Passive Optical Network
  • An Encryption Method for Multiple Access Passive Optical Network
  • An Encryption Method for Multiple Access Passive Optical Network

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Embodiment 1

[0039] For the convenience of description, the relevant technical terms appearing in the specific implementation are explained first:

[0040] figure 1 It is a structural diagram of a specific embodiment of an encryption method for multiple access of a digital filter to a passive optical network of the present invention. The digital filter multiple access passive optical network includes an optical line terminal and a plurality of optical network units.

[0041] This embodiment provides an encryption method for multiple access passive optical network, the encryption method includes:

[0042] (1) The software-defined network controller defines the shaping and filtering scheme of the transmitter, including the number x of the shaping digital filter team, the state function f(i), i=1.2.3...x, the phase-time function of the shaping digital filter, And the use of the shaping filter at the transmitting end for different channels at the transmitting end, and inform the receiving en...

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Abstract

The invention relates to an encryption method for multiple access-passive optical networks and solves the technical problem that the security is low. Through adoption of a software defined network controller, dynamic allocation is carried out on digital filter pairs according to demands of optical network units for bandwidths, and a transmitting end and a receiving end are informed, thereby determining which filter pairs are specifically employed by different optical network units. Phases are introduced into the digital filters and the phases are continuously and dynamically changed in a filtering process. According to the method, phase sequences of the digital filters are generated through utilization of chaotic systems, and the phase sequences of the digital filters with different center frequencies are different. The software defined network controller also informs the transmitting end and the receiving end of the chaotic systems for generating the phase sequences of the digital filters and parameter settings thereof, and data interval lengths when shaping filtering and matching filtering are carried out and the phases are changed, so the receiving end is guaranteed to carry out correct matching filtering; the problem is solved by the technical scheme; and the method is applied to the multiple access-passive optical networks.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to an encryption method for multiple access passive optical network. Background technique [0002] In recent years, digital filter multiple access (DFMA), a new digital access technology controllable by SDN, has been proposed. As a new type of access technology evolved from digital filtering, DFMA access technology not only enables the communication system to have the advantages of a carrier-less amplitude / phase modulation (CAP) communication system, but also enables the network to have a higher Flexibility in bandwidth resource allocation. DFMA has great potential to support future cloud access networks, and can seamlessly integrate traditional access networks, metro optical networks and mobile front-haul / back-haul networks. In addition to the advantages mentioned above, DFMA also has other significant advantages: it fully supports the SDN solution that the network ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00H04L9/00H04B10/85
CPCH04B10/85H04L9/001H04Q11/0067
Inventor 张崇富闫扬扬张慧娟谢军邱昆
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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