Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Time and wavelength division multiplexed passive optical network resource allocation mechanism based on linear prediction

A time division wavelength division multiplexing, passive optical network technology, applied in the field of passive optical networks, can solve the problem of large end-to-end delay of data frames, and achieve the effect of reducing packet delay, avoiding improvement, and ensuring scientificity

Inactive Publication Date: 2015-01-28
BEIJING UNIV OF POSTS & TELECOMM
View PDF4 Cites 13 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the end-to-end delay of the data frame is relatively large

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
  • Time and wavelength division multiplexed passive optical network resource allocation mechanism based on linear prediction
  • Time and wavelength division multiplexed passive optical network resource allocation mechanism based on linear prediction
  • Time and wavelength division multiplexed passive optical network resource allocation mechanism based on linear prediction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below. The system resource allocation mechanism algorithm based on flow prediction in the TWDM-PON system of the embodiment of the present invention comprises the following steps:

[0021] Step 1: The ONU sends a REPORT frame up in its own polling period, and the frame header contains the size of the buffered data in the buffer at this time.

[0022] Step 2: After receiving the REPORT frame, the OLT executes the following prediction algorithm to predict its traffic.

[0023]

[0024] where α is the adaptive weight coefficient, and L determines the prediction bandwidth determined by the previous "several" observations. The weight coefficient is calculated by the least mean algorithm (LMS):

[0025] α i , j ( ...

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 time and wavelength division multiplexed passive optical network resource allocation mechanism based on flow prediction and belongs to the technical field of passive optical networks in access networks. According to the mechanism, when an OLT authorizes a bandwidth request of an ONU, wavelength allocation is conducted with the earliest free wavelength priority algorithm firstly, then allocation of time slot bandwidths on each wavelength is conducted with the linear prediction algorithm, and prediction bandwidth and the required bandwidth of an uplink REPORT frame of the ONU are authorized to the ONU together. In this way, data newly reaching the ONU can be considered as much as possible in the whole request-authorization process, so that the data are sent in the same period instead of waiting to be sent in the next period, and then packet delay can be reduced as much as possible.

Description

technical field [0001] The invention relates to a time division wavelength division multiplexing passive optical network (TWDM-PON, Time and Wavelength Division Multiplexed-PON) resource allocation mechanism based on linear prediction, and belongs to the technical field of passive optical network (PON, Passive Optical Network). Background technique [0002] In the existing optical network, the access network has become the "bottleneck" of the entire communication network. How to solve this "bottleneck" problem has become the focus of attention of experts and scholars as well as major equipment manufacturers and operators. Under such circumstances, passive optical network (PON) technology has begun to surface, and it has brought high expectations to people to solve this problem with its advantages. [0003] Passive Optical Network (PON) is a tree-structured all-fiber distribution network, which consists of an optical line terminal (OLT) at the central office, an optical netw...

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): H04Q11/00H04J3/16H04J14/02
Inventor 王宏祥梁洋洋纪越峰
Owner BEIJING UNIV OF POSTS & TELECOMM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com