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Bandwidth control method and communication node

A bandwidth adjustment and node technology, applied in the field of communication, can solve the problems of not being able to adapt to the changing requirements of asymmetric bandwidth service traffic, and without lossless adjustment of OTN asymmetric bandwidth bearer

Inactive Publication Date: 2014-11-05
韩宝 +2
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Problems solved by technology

With the increase of OTN bearing services, asymmetric bandwidth services such as Gigabit-Capable Passive Optical Network (Gigabit-Capable Passive OpticalNetwor, GPON), Video On Demand (Video On Demand, VOD) and other services are also increasing. Lossless adjustment of OTN asymmetric bandwidth bearer cannot adapt to changing requirements of asymmetric bandwidth service traffic

Method used

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  • Bandwidth control method and communication node
  • Bandwidth control method and communication node
  • Bandwidth control method and communication node

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0031] method embodiment

[0032] A bandwidth adjustment method, the method of this embodiment is applicable to such as figure 2 In the point-to-multipoint OTN asymmetric bandwidth bearer system shown, one source node can send services to at least two sink nodes (three are taken as an example in the figure, that is, sink 1, 2, and 3), and the source node The process to reach the destination node through intermediate nodes includes the first node and downstream no...

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Abstract

A bandwidth adjusting method and a communication node are provided. The bandwidth adjusting method includes: sending, by an upstream ingress unit of a local node, multi-channel parallel basic switch cells to all downstream branch egress units of the local node, where adjustment signaling is carried in the multi-channel parallel basic switch cells and is used for indicating addition or removal of a basic switch cell; sending normal signaling when determining that received adjustment response statuses returned by all the downstream branch egress units are reception acknowledgment; after receiving the normal signaling by the downstream branch egress unit, adding or removing the basic switch cell into or from next multi-channel parallel basic switch cells according to the adjustment signaling; and adjusting a time slot of a high order optical channel data unit sent by the downstream branch egress unit to a downstream node, and instructing the downstream node to adjust the time slot of the received high order optical channel data unit. Through the method and the communication node, lossless bandwidth adjustment in a point-to-multipoint OTN asymmetric bandwidth carrier system is implemented.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a bandwidth adjustment method and a communication node. Background technique [0002] Optical transport network (Optical transport network, OTN), as the core technology of next-generation transport network, has rich operation management and maintenance (OAM), powerful tandem connection monitoring (TCM) capabilities and out-of-band forward error correction (FEC) capabilities, It can realize the flexible scheduling and management of large-capacity services, and has increasingly become the mainstream technology of the backbone transmission network. [0003] The OTN frame has a modular structure of 4080×4 and can carry customer signals. Optical Channel Data Unit flex (Optical Channel Data Unit-flex, ODUflex) is an OTN frame corresponding to a new rate level, which can carry services of any rate. When performing service transmission, first map the service to the payload area of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/70
CPCH04J3/1682H04J2203/0067H04Q2213/1301H04J3/1652
Inventor 苏伟青华平黄曦丁炽武
Owner 韩宝
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