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Bandwidth allocation method and device for passive optical network (PON) with different transmission rates

A downlink rate and specific technology, applied in the communication field, can solve problems such as OLT unified scheduling

Active Publication Date: 2012-01-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a bandwidth allocation method and device to solve the problems of the related technology that when PONs with different transmission rates coexist, OLT needs to perform unified scheduling in time, etc.

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  • Bandwidth allocation method and device for passive optical network (PON) with different transmission rates
  • Bandwidth allocation method and device for passive optical network (PON) with different transmission rates
  • Bandwidth allocation method and device for passive optical network (PON) with different transmission rates

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Embodiment Construction

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0040] The present invention proposes that ONUs with different downlink rates such as 10Gbps ONU and 1Gbps ONU use different downlink wavelengths.

[0041] The embodiment of the present invention provides a method for determining the downlink rate of the ONU, such as image 3 Include the following steps:

[0042] Step S302, during the discovery process, send the discovery message sent to the ONU with a specific downlink rate through the corresponding wavelength;

[0043] Step S304, opening a special discovery window for the ONU with the specific downlink rate, and determining the ONU registered in the discovery window as the ONU with the specific downlink rate.

[0044] For example, during the discovery process, the discovery message of the 10Gbps ONU is sent to the 10Gbps ONU through the corresponding wavelength such as 1550nm wav...

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Abstract

The invention provides a bandwidth allocation method and a bandwidth allocation device for a passive optical network (PON) with different transmission rates. The method comprises the following steps of: setting a type table entry for recording the types of optical network units (ONU) with the different transmission rates in an optical line terminal (OLT); performing unified time slot allocation on the ONUs with the different transmission rates according to the table entry to form an uplink bandwidth allocation table entry by using the OLT; and bearing bandwidth allocation instructions of the ONUs with the different transmission rates to corresponding downlink optical channels with different wavelengths according to the uplink bandwidth allocation table entry respectively. The invention also provides the bandwidth allocation device for the PON with the different transmission rates.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a bandwidth allocation method and device for coexistence of PONs with different transmission rates. Background technique [0002] At present, many Internet services are accessed through dial-up modems, asymmetric digital line subscriber lines (ADSL), cable modems (CM) and VDSL with transmission rates ranging from 56K to several megabytes. However, in order to provide various services, such as high-quality video information services, VoD (Video on Demand) services, etc., data transmission requires about 100M bandwidth, which cannot be met by the above-mentioned several access methods. Therefore, The demand for laying access networks with optical fibers is growing rapidly. The Passive Optical Network (PON) is a user access network that can meet these new business needs and is economical and easy to operate and maintain. figure 1 Shown is a schematic diagram of the PON multi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04Q11/00H04L12/44
CPCH04J3/1694
Inventor 王运涛黄伟欧鹏
Owner HUAWEI TECH CO LTD