Unlock instant, AI-driven research and patent intelligence for your innovation.

Triple dechurning realization method and device for Ethernet passive optical network (EPON)

An implementation method, N-9 technology, applied in multiplexing system selection device, selection device, usage of multiple keys/algorithms, etc., can solve the implementation method and implementation method of triple de-stirring of arbitrary bit width data in EPON system Hardware circuit implementation does not give clear instructions and other issues, to achieve the effect of fast speed, high timing speed, and small scale

Active Publication Date: 2012-07-18
FENGHUO COMM SCI & TECH CO LTD +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the existing ITU-T G.983.1 standard mainly regulates the churn algorithm in the PON system, and the above-mentioned invention patent application mainly describes the key update and synchronization of the EPON system and the triple churn encryption method. There is no clear explanation for the implementation method and hardware circuit implementation of the triple de-stirring of arbitrary bit width data in the EPON system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Triple dechurning realization method and device for Ethernet passive optical network (EPON)
  • Triple dechurning realization method and device for Ethernet passive optical network (EPON)
  • Triple dechurning realization method and device for Ethernet passive optical network (EPON)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0029] see figure 1 as shown, figure 1 Among them, data_in[m*8-1:0] is the encrypted and stirred data frame in the input direction of the embodiment of the present invention, which is the input ciphertext, and data_out[m*8-1:0] is the decrypted output direction of the embodiment of the present invention De-churned data, as output plaintext. The three groups of keys sent in the OAM (Operation Administration and Maintenance) frame are the first key key1, the second key, and the The second key key2, the third key key3, where:

[0030] key1[23:0]={x1, x2, x3, x4, x5, x6, x7, x8, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16}1

[0031] key2[23:0]={x1, x2, x3, x4, x5, x6, x7, x8, p1, p2, p3, p4, p5, p6, p7, p8, p9, p10, p11, p12, p13, p14, p15, p16}2

[0032] key3[23:0]={x1, x2, x3, x4, x5, x6, x7, x8, p1, p2, p3, p4, ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a triple dechurning realization method and a triple dechurning realization device for an Ethernet passive optical network (EPON). The method comprises the following steps of: dividing a downlink m-byte churning encrypted data frame input in each system clock cycle by using an optical network unit (ONU) into m 8-bit input data streams by taking a byte as a unit, wherein m is a positive integer; generating m first vector sets and m second vector sets according to the input churning encrypted data frame, three groups of keys input by an operation administration and maintenance (OAM) frame and m pieces of triple dechurning output of the eighth and ninth bytes before a currently divided byte, transmitting the m first vector sets, the m second vector sets and the three groups of keys into m corresponding triple dechurning circuits, performing triple dechurning on the m 8-bit input data streams to correspondingly obtain m sets of dechurning data output, and combining the m sets of dechurning data output to obtain a triple dechurning data frame. The method and the device are high in circuit hardware time sequence realization speed, and high in operability.

Description

technical field [0001] The present invention relates to the technical field of broadband optical fiber access, in particular to a method and device for implementing triple dechurning in EPON (Ethernet Passive Optical Network, Ethernet Passive Optical Network). Background technique [0002] In recent years, with the emergence of high-bandwidth services such as video-on-demand, online games, and IPTV, users' demand for access bandwidth has increased. Therefore, EPON and GPON (Gigabit-Capable PON) for high-speed access Capable Ethernet passive optical network) and other passive optical network equipment are widely used. [0003] However, with the improvement of user requirements, especially the continuous pursuit of bandwidth, the existing PON (Passive Optical Network, Passive Optical Network) technology is facing new challenges, especially with the high-definition IPTV (Internet Protocol Television, IP With the development and popularization of video streaming services such a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H04L9/14H04B10/12H04B10/25H04Q11/00
Inventor 朱齐雄
Owner FENGHUO COMM SCI & TECH CO LTD