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

Passive optical network, multiplexing/de-multiplexing device and method supporting the multicast service

A passive optical network and demultiplexer technology, which is applied in the field of wavelength division multiplexing passive optical network, can solve the problems of processing capacity bottlenecks, high OLT processing capacity requirements, waste of system bandwidth resources, etc.

Active Publication Date: 2007-08-01
HUAWEI TECH CO LTD
View PDF0 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since WDM-PON is essentially a point-to-point network structure, the point-to-point network usually uses in-band multi-copy mode to transmit multicast service data, which makes WDM-PON have obvious advantages when implementing multicast services. Defects are mainly reflected in: On the one hand, the processing capability of the OLT is very high, and complex multicast protocols are needed to support the multicast services, especially when many users order the same program, the processing capability of the OLT will become The bottleneck of the WDM-PON system; on the other hand, the same data has to be copied on multiple wavelengths and transmitted to different ONUs, thus greatly wasting the bandwidth resources of the 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
  • Passive optical network, multiplexing/de-multiplexing device and method supporting the multicast service
  • Passive optical network, multiplexing/de-multiplexing device and method supporting the multicast service
  • Passive optical network, multiplexing/de-multiplexing device and method supporting the multicast service

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0070] In order to make the object, technical solution and advantages of the invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0071] The present invention provides a WDM-PON system that can support multicast services, such as a WDM-PON system that supports multicast services and / or broadcast services and / or cable television (CATV) services. Fig. 3 has shown the basic structure of WDM-PON system described in the present invention, as shown in Fig. 3, mainly comprises: OLT, multiplexer / demultiplexer, n ONU and connect described OLT, described multiplex / demultiplexer A demultiplexer and the optical fibers of the n ONUs. Among them, n is a natural number.

[0072] Wherein, the OLT is used in the downlink direction to carry the n downlink unicast data sent to the n ONUs respectively to n optical signals with different wavelengths, and one or more than one multicast service The data is re...

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 wavelength-division multiplex- passive light network, a multiplex / demultiplexer and method of realizing multicast in said wavelength-division multiplex- passive light network. The wavelength-division multiplex- passive light network and method of realizing multicast uses single wavelength to transfer the multicast, so the bandwidth resource of system can be saved effectively, and the complexity of system is decreased.

Description

technical field [0001] The present invention relates to a passive optical network (PON, Passive Optical Network) technology, in particular to a wavelength division multiplexing passive optical network (WDM-PON, WavelengthDivision Multiplexed Passive Optical Network) supporting multicast services. - A multiplexer / demultiplexer used in PON and a method for realizing multicast services by utilizing the above-mentioned WDM-PON. Background technique [0002] At present, with the development of high-speed data services such as high-quality video information services and video on demand (VoD, Video on Demand), users' demand for access network data access bandwidth is about 100 megabits per second (Mbps). Using existing access methods such as dial-up Internet access and asymmetric digital subscriber line (ADSL) can no longer meet the user's demand for access bandwidth. Therefore, the demand for laying access networks using optical fibers is growing rapidly, and PON can exactly meet ...

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
IPC IPC(8): H04J14/02
CPCH04J14/0232H04J14/0246H04J14/0227H04J14/0226H04J14/0238H04J14/0282H04J14/025
Inventor 黄伟林华枫赵峻王峰江涛陈珺王运涛卫国
Owner HUAWEI TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com