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

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

Active Publication Date: 2008-05-14
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

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] 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.

[0026] image 3 It shows a bandwidth allocation method for PON coexistence of different transmission rates according to an embodiment of the present invention, which includes the following steps:

[0027] A bandwidth allocation method for PON coexiste...

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Abstract

The present invention provides a bandwidth allocation method for PON coexistence with different transmission rates, comprising the following steps: setting category entries in the OLT to record the types of ONUs with different transmission rates; performing unified time slot allocation to form an uplink bandwidth allocation entry; and according to the uplink bandwidth allocation entry, carrying bandwidth allocation instructions of different transmission rates on downlink optical channels of different wavelengths respectively. The present invention also provides a bandwidth allocation device for coexistence of PONs with different transmission rates.

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. 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 th...

Claims

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Application Information

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