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

A method for improving the uplink bandwidth of passive optical network

A passive optical network and optical network unit technology, which is applied in the field of improving the upstream bandwidth of the passive optical network, can solve the problems such as the long successful registration time of the optical network unit, and achieve the increase of upstream bandwidth, wide application fields, and state machine easy effect

Active Publication Date: 2019-02-01
ALCATEL LUCENT SHANGHAI BELL CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, this makes the ONU's successful registration time longer

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
  • A method for improving the uplink bandwidth of passive optical network
  • A method for improving the uplink bandwidth of passive optical network
  • A method for improving the uplink bandwidth of passive optical network

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Here, the background of the present invention is introduced first. According to the IEEE802.3ah / 802.3av standard, the automatic discovery of optical network units uses the messages of Multi-Point Control Protocol (Multi-Point Control Protocol 1): GATE, REGISTER_REQ, REGISTER and REGISTER_ACK.

[0023] Since multiple unregistered ONUs may respond to the same discovery GATE message, the REGISTER_REQ messages of individual ONUs may collide with each other. In this case, the ONU whose REGISTER_REQ message collides will not get the REGISTER message. If an ONU does not receive a REGISTER message before it receives another Discovery GATE message, the ONU will conclude that a collision has occurred and will attempt the next registration.

[0024] figure 1 A schematic diagram of the relationship between the discovery window and the discovery time slot is shown. Such as figure 1 As shown, the discovery time slot is the length granted to all unregistered ONUs to register, that...

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 provides a method for improving the uplink bandwidth of a passive optical network in an optical line terminal. In the passive optical network, the optical line terminal has a configurable parameter N and allows N optical network units at most to register, and the passive optical network includes n unregistered optical network units. The optical line terminal periodically transmits a discovery window for optical network unit registering. In the discovery window, each optical network unit is assigned a discovery slot used for registering of the optical network unit. The method comprises the following steps: the optical line terminal opens the discovery window for the optical network units to register if N>=n>0; and the optical line terminal closes the discovery window to enable uplink data of each optical network unit to be transmitted when n=0. The size of the window dynamically decreases as the number of the unregistered optical network units decreases.

Description

technical field [0001] The invention relates to optical communication technology, in particular to a method for improving the uplink bandwidth of a passive optical network. Background technique [0002] In the process of automatic discovery of optical network units, the Dynamic Bandwidth Allocation algorithm on the optical line terminal periodically sends MPCP discovery messages to check newly connected optical network units, and at the same time allocates discovery windows. During the discovery window, registered ONUs are not allowed to send uplink data. [0003] For 10G PON, the optical line terminal currently supports a splitting ratio of 1:128. Considering that the distance between the OLT and each ONU is randomly distributed between intervals 0 km and 20 km (this corresponds to a round-trip time of 0 to 200 microseconds), the discovery window has to take into account the maximum round-trip time ( round-trip time), thus causing excessive overhead of uplink bandwidth. ...

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 Patents(China)
IPC IPC(8): H04Q11/00H04J3/16
Inventor 冉朝阳徐易
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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