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Bandwidth allocation method, optical line terminal, optical network unit and system

A technology of optical network unit and bandwidth allocation, which is applied in the field of optical communication and can solve problems such as transmission delay not meeting requirements

Active Publication Date: 2021-09-07
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem that the transmission delay does not meet the requirements when the PON system is applied to mobile backhaul, and then reduce the transmission delay of the PON system to improve the data transmission rate and transmission efficiency, the technical solution is as follows:

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  • Bandwidth allocation method, optical line terminal, optical network unit and system
  • Bandwidth allocation method, optical line terminal, optical network unit and system
  • Bandwidth allocation method, optical line terminal, optical network unit and system

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Embodiment Construction

[0051] In order to make the purpose, technical solutions and advantages of the present application, the present application will be further described in detail below with reference to the accompanying drawings.

[0052] "Multiple" mentioned herein refers to two or more. "And / or" describes the association relationship of the associated object, indicating that there are three relationships, such as A, / or B, which can be represented: Alone A, while there are three situations of B, alone. Character " / " generally means that the associated object is a "or" relationship.

[0053] Please refer to figure 1 The passive light network system 100 includes at least one optical line terminal (OLT) 110, a plurality of optical network units (ONU) 120, and a light distribution network (ODN) 130. The optical line terminal 110 is connected to the plurality of optical network units 120 in a point-to-multipoint form by the light distribution network 130. The optical line terminal 110 and the optica...

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Abstract

The application discloses a bandwidth allocation method, an optical line terminal, an optical network unit and a system, the method comprising: receiving bandwidth requests sent by various optical network units (ONUs), the the ONUs comprising a first ONU1; according to the bandwidths requested by the ONUs and the bandwidth configured by the ONUs, generating a BWMap message, the BWMap message comprising a first allocation identifier Alloc-ID1 and first time corresponding to the Alloc-ID1, a second allocation identifier Alloc-ID2, and second time corresponding to the Alloc-ID2, the Alloc-ID1 and the Alloc-ID2 being both allocated to the ONU1; and sending the BWMap message to each ONU. The method solves the problem that the transmission delay does not meet the requirement when the PON system is applied to mobile backhaul, improves the data transmission rate and efficiency, and improves the satisfaction of users.

Description

Technical field [0001] The present application relates to optical communications, particularly to a bandwidth allocation method, an optical line terminal, and optical network unit systems. Background technique [0002] PON (Passive Optical Network, PON) is one kind of multipoint network topology, typically comprising an optical line termination (Optical Line Terminal, OLT) located in the central office, a plurality of optical network units located on the user side (Optical network Unit, ONU) and is located between the two optical distribution network (OpticalDistribution network, ODN). [0003] PON system, dynamic bandwidth allocation (Dynamically Bandwidth Assignment, DBA), is a mechanism to complete the dynamic allocation of upstream bandwidth in the microsecond or millisecond intervals. Conventional PON system, the bandwidth of each ONU OLT according to a request reported, issued broadcasting (Bandwidth Map, BWMap) message, so that each ONU to transmit data through the message...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04N7/22
CPCH04Q11/0062H04N7/22H04Q2011/0086H04Q11/0067H04Q2011/0064H04Q2011/0088H04J14/0239H04J14/0223H04J14/0249H04J14/0245H04B10/00H04B10/27
Inventor 张伦万席锋郑刚
Owner HUAWEI TECH CO LTD