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Band width distribution method and device used for PON coexistence of different transmission rate

A bandwidth allocation method and bandwidth allocation technology, applied in the communication field, can solve problems such as OLT unified scheduling

Active Publication Date: 2008-06-11
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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  • Band width distribution method and device used for PON coexistence of different transmission rate

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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] Embodiments of the present invention provide a method for determining the ONU downlink rate, as shown in Figure 3, including 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 waveleng...

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Abstract

The invention provides a bandwidth allocation method used for coexistence of PONs with different transmission rates, comprising the following steps: variety table items are arranged in an OLT and used for recording varieties of ONUs with different transmission rates; the OLT performs unified time slot allocation of the ONUs with different transmission rates according to the table items, and uplink bandwidth allocation table items are formed; moreover, bandwidth allocation instructions of the ONUs with different transmission rates are respectively born on corresponding downlink optical channels with different wavelengths according to the uplink bandwidth allocation table items. The invention also provides a bandwidth allocation device used for coexistence of the PONs with 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 of bandwidth, and the above-mentioned access methods cannot meet the requirements. Therefore, using The demand for laying optical fiber access network is growing rapidly. Passive Optical Network (PON) is a user access network that can meet these new service requirements and is economical and easy to operate and maintain. Figure 1 shows the PON multicast network structur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04L12/56H04L12/28H04L12/911H04Q11/00
Inventor 王运涛黄伟欧鹏
Owner HUAWEI TECH CO LTD