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Method and device for dynamically distributing bandwith based on Ethernet passive light network up-link

A passive optical network and link bandwidth technology, applied in the field of dynamic bandwidth allocation, it can solve problems that affect the response speed and accuracy of bandwidth allocation, different message content and formats, false bandwidth request reports, etc., to protect investment costs and simplify Hardware and software functions, the effect of preventing malicious encroachment

Inactive Publication Date: 2007-06-20
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

If the hardware of a certain ONU fails, or the central office equipment discards the report information of some ONUs, it will affect the response speed and accuracy of the upstream bandwidth allocation of the entire system
Moreover, this mechanism is easily used by malicious users to report false bandwidth requests and excessively occupy uplink bandwidth, resulting in unfair bandwidth allocation.
Moreover, since different algorithms may require different parameters, the content or format of the REPORT message is limited by the algorithm, which may easily cause the content and format of the REPORT message sent by remote devices of different manufacturers to be different.
This affects the interconnection and intercommunication of equipment from different manufacturers.

Method used

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  • Method and device for dynamically distributing bandwith based on Ethernet passive light network up-link
  • Method and device for dynamically distributing bandwith based on Ethernet passive light network up-link
  • Method and device for dynamically distributing bandwith based on Ethernet passive light network up-link

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Embodiment Construction

[0058] The method and device of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0059] The method and device for allocating upstream bandwidth based on flow statistics described in the present invention determines the size of the upstream bandwidth allocated to the ONU by counting the size of the upstream traffic sent by each ONU received by the central office equipment OLT. The whole technical solution can be divided into two parts, one part is the device in the OLT for ONU upstream traffic statistics and calculation bandwidth allocation, and the other part is the dynamic bandwidth allocation method based on this device.

[0060] FIG. 5 is a schematic diagram of a module structure of a device used to realize the method for dynamically allocating uplink bandwidth of the present invention. In Fig. 5, various functional modules above the dotted line are implemented by various functional programs run by the embedded CPU (in...

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Abstract

The invention is concerned with the dynamic allocation method that achieves in up link bandwidth based on the kilomega grade Ethernet passive optic network (EPON), and the equipment that achieves the above method in the optic line terminal (OLT), including: the up discharge statistic, the sample equipment, and the bandwidth utilance adjustment algorithm, the part equipment adjusts allocated ONC up bandwidth quickly according to each ONU up bandwidth utilance, the function of the equipment is: the OLT processes statistic to the up link data frame length transmitting by the OLT from all connecting optic network unit that is with 16 bit as unit in the bandwidth allocation period. The achievement of the invention is by the hardware supply layer of the FPGA and the imbedding CUP in the apparatus, it is not only support the two above algorithm but also support other algorithm.

Description

technical field [0001] The present invention relates to a method for dynamically allocating bandwidth and a device for realizing the method, in particular to a method for dynamically allocating uplink bandwidth in a Gigabit Ethernet-based passive optical network (EPON) and an optical line terminal in the network A device for implementing the method described above. Background technique [0002] An Ethernet-based passive optical network (EPON) is composed of an optical line terminal (OLT) at the central office, several optical network units (ONU) at the remote end, and a passive optical distribution network (ODN). Typical topology The structure is shown in Figure 1. Among them, the ODN adopts a passive optical network (PON) structure with a passive optical splitter, and a backbone optical fiber is connected to multiple optical fibers through a passive optical splitter (splitter) to communicate with multiple ONUs. [0003] The optical signals transmitted in two directions in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/12H04J14/08H04L12/24H04L12/28H04Q11/00
Inventor 杨柳何岩焦名圣杨永胜
Owner FENGHUO COMM SCI & TECH CO LTD
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