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Bandwidth distribution method and device for PON coexistence of different transmission rates

A bandwidth allocation method, bandwidth allocation technology, applied in the communication field

Active Publication Date: 2010-08-25
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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

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  • Bandwidth distribution method and device for PON coexistence of different transmission rates
  • Bandwidth distribution method and device for PON coexistence of different transmission rates
  • Bandwidth distribution method and device for PON coexistence of different transmission rates

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Embodiment Construction

[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0026] The present invention proposes that the 10Gbps ONU and the 1Gbps ONU use different downlink wavelengths. During the discovery process, the discovery message of the 10Gbps ONU is sent to the 10Gbps ONU through the 1550nm wavelength, and a discovery window is opened for the 10Gbps ONU, so as long as the ONUs registered in this discovery window are all 10Gbps ONUs. Similarly, the discovery message of 1Gbps ONU is sent to 1Gbps ONU through 1490nm wavelength, and a discovery window is opened for 1Gbps ONU, as long as the ONUs registered in this discovery window are all 1Gbps ONUs.

[0027] Fig. 3 shows the bandwidth allocation method for PON coexistence of different transmission rates according to an embodiment of the present invention, and it comprises the following steps:

[0028] A bandwidth allocation method for PON coexistenc...

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Abstract

The invention provides a bandwidth distribution method for a coexisting of different transmission rate. The method includes the following steps: an type list table is formed in an OLT for recording the types of different transmission rates ONU; the OLT carries out an unified time-slot distribution to the different rates ONU according to the table to form a uplink bandwidth distribution table; andaccording to the uplink bandwidth distribution table, the bandwidth distribution instruction with different transmission rates are borne by a downlink light channel with different wavelengths. The invention also provides the bandwidth distribution device used for the coexisting of different rates PON.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates 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. 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 shows the PON multicast network Schema...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/56H04L12/28H04B10/12H04Q11/00H04L47/76
Inventor 王运涛黄伟欧鹏
Owner HUAWEI TECH CO LTD