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A method and system for co-dba compatible with different delay requirements

A technology of demand and end time, which is applied to the selection device, electrical components, selection device, etc. of the multiplexing system, can solve the problems of single selection, bandwidth waste, etc., and achieve the effect of ensuring real-time performance and bandwidth utilization

Active Publication Date: 2022-02-01
FENGHUO COMM SCI & TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Co-DBA method is suitable for low-latency services. In the same network, low-latency services often only occupy part of the uplink bandwidth. If the system only supports low-latency services, it will cause a large amount of bandwidth waste.
[0006] In the prior art, when the mixed application of SR / TM mode DBA and Co-DBA is supported in the same PON, it is either simple time division multiplexing, or a single option, which cannot be flexibly implemented according to the real-time bandwidth usage and bandwidth requirements of the network. Dynamic adjustment and authorization ordering

Method used

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  • A method and system for co-dba compatible with different delay requirements
  • A method and system for co-dba compatible with different delay requirements
  • A method and system for co-dba compatible with different delay requirements

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Embodiment Construction

[0047] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0048] The embodiment of the present invention provides a Co-DBA method compatible with different delay requirements, which is applied to PON systems with XGSPON / NGPON2 or higher rates. Effectively improve bandwidth utilization while real-time. see figure 2 As shown, the method includes step S1 and step S2 in no particular order, and also includes step S3:

[0049] S1: The OLT provides an interactive interface for exchanging Co-DBA scheduling information with the CU / DU to generate authorization information for low-latency services. The interactive interface may adopt a hardware interactive interface or a software interactive interface.

[0050] Among them, such as image 3 As shown, the scheduling information provided by the OLT to interact with the CU / DU includes: DBA calculation period, authorization issuance period, ONU registration inf...

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Abstract

The present invention discloses a Co-DBA method and system compatible with different delay requirements, and relates to the PON technical field. The present invention provides an interactive interface through an OLT to transmit Co-DBA scheduling information and obtain CU / DU feedback. Delivered Co-DBA authorization information; at the same time, it retains the calculation function of SR / TM DBA authorization information through flow report analysis and flow monitoring between ONU and ONU, and provides DBA methods compatible with two different delay requirements. In the present invention, the OLT performs authorization sequence arbitration based on the principle of low-delay service priority, combined with DBA authorization information, monitors two types of DBA authorizations in real time, dynamically adjusts out-of-order authorizations, and guarantees bandwidth utilization while giving priority to real-time performance to the greatest extent. .

Description

technical field [0001] The invention relates to the technical field of PON, in particular to a Co-DBA method and system compatible with different delay requirements. Background technique [0002] The traditional DBA (Dynamic bandwidth assignment, dynamic bandwidth allocation) adopts the SR (StateReport, status report) / TM (Traffic Monitoring, traffic monitoring) method or Fixed (fixed bandwidth) method to realize, and adopts the traditional DBA to carry out the upstream allocation of the PON system. It is a trade-off between bandwidth efficiency and latency. [0003] SR / TM DBA: To a certain extent, the bandwidth is multiplexed better, but because this method passively allocates bandwidth through the ONU feedback flow information, the delay is too large to meet the requirements of the 5G eCPRI interface. [0004] Fixed DBA: The bandwidth is fixed, there is no response time, and the delay depends only on the burst rate. However, due to the periodic delivery, the line data traf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q11/00
CPCH04Q11/0062H04Q11/0067H04Q2011/0086H04Q2011/0079
Inventor 左越
Owner FENGHUO COMM SCI & TECH CO LTD
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