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Ethernet passive optical network multi-service dynamic broadband distributing method

A technology of dynamic bandwidth allocation and passive optical network, which is applied in the direction of data exchange network, selection device of multiplexing system, digital transmission system, etc., and can solve the problem of difficult guarantee, high network service quality, and inability to match ONU bandwidth requirements, etc. problem, to achieve the effect of wide application range, low calculation difficulty and high accuracy

Inactive Publication Date: 2006-05-24
真宽通信技术(苏州)有限公司
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Problems solved by technology

[0011] However, in the prior art, the algorithm for dynamic bandwidth allocation of Ethernet based on the bandwidth request information of the ONU is not optimal, and it cannot match the bandwidth requirements of the ONU's upstream services, which brings difficulties to the network's support for various types of services. Certain difficulties, and at the same time it is difficult to guarantee a high quality of network service

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  • Ethernet passive optical network multi-service dynamic broadband distributing method
  • Ethernet passive optical network multi-service dynamic broadband distributing method
  • Ethernet passive optical network multi-service dynamic broadband distributing method

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Embodiment Construction

[0053] Let's first introduce the EPON system:

[0054] 1. Basic composition of EPON system

[0055] A typical EPON system mainly consists of three parts: Optical Line Terminal (OLT), Optical Distribution Network (ODN) and Optical Network Units / Terminal (ONU / ONT) . Among them: OLT is located at the central office, responsible for the distribution and control of channel connections, and real-time monitoring, management and maintenance of the entire EPON network; ONU / ONT is located at the user end (or user resident side), to achieve user terminal access; ODN It is composed of passive optical splitter (Passive Optical Splitter, POS, also known as passive optical splitter, passive optical splitter) and optical fiber lines, to realize the network connection between OLT and each ONU, 802.3ah working group EFM (Ethernet in the First Mile Study) determined that the splitting ratio of the passive beam splitter was between 1:16 and 1:128. The difference between ONU and ONT is t...

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Abstract

The method includes steps: timer of bandwidth assignment period starts up timing; after time-out, carrying out preprocessing operation for information of bandwidth request reported from ONU; carrying out totaling calculation operation for information variable of bandwidth request; carrying out operation for calculating initial value of dynamic bandwidth; carrying out operation for assigning MPCP bandwidth, TDM bandwidth, and static bandwidth of Ethernet; after completion of authorized calculating, arranging and distributing bandwidth, resetting timer of bandwidth assignment period and restarting up timing. Advantages are: better performance for assigning dynamic bandwidth, high precision of algorithm, good match to information for requesting bandwidth of ONU up going service, and supporting TDM service and Ethernet service fully.

Description

technical field [0001] The invention relates to the field of optical fiber communication, in particular to the field of Ethernet passive optical network (EPON), and specifically refers to a method for multi-service dynamic bandwidth allocation of the Ethernet passive optical network. Background technique [0002] The current network is gradually converging, and multiple services can be supported on the same network, including Ethernet services and voice services. At present, VoIP still has problems such as unguaranteed call quality, and traditional telephone access is still the first choice of users. As a new type of FTTH solution, the Ethernet Passive Optical Network (EPON: Ethernet Passive Optical Network) system not only needs to support Ethernet service requirements, but also fully supports TDM services such as traditional voice services. [0003] However, the current 802.3ah standard and agreement do not regard DBA (Dynamic Bandwidth Allocation, dynamic bandwidth alloc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04Q11/00
Inventor 黄世军聂世玮杜春风张世卓
Owner 真宽通信技术(苏州)有限公司
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