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Data transmission method and device in optical transport network

A data transmission method and optical transport network technology, applied in the field of data transmission methods and devices, can solve the problems of utilization, low bandwidth utilization, bandwidth waste and the like

Active Publication Date: 2020-10-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, the service data does not fully utilize the bandwidth of the 3 time slots occupied, resulting in a waste of 0.75G bandwidth
When multi-channel business data is transmitted in a mixed manner, each service occupies a fixed number of time slots. In actual situations, not all services can fully utilize the occupied time slot bandwidth, which will cause more bandwidth waste, resulting in bandwidth low utilization

Method used

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  • Data transmission method and device in optical transport network
  • Data transmission method and device in optical transport network
  • Data transmission method and device in optical transport network

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Embodiment Construction

[0074] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0075] The network architecture and service scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. Those skilled in the art know that with the evolution of the network architecture and the emergence of new service scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0076] The technical solutions provided by the embodiments of the present application are applicable to optical networks, such as OTN. An OTN is usually formed by connecting multiple OTN devices through optical fibers, a...

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Abstract

The invention discloses a data transmission method and device in an optical transport network, relates to the technical field of optical communication, and is helpful for reducing bandwidth waste so as to improve the utilization rate of bandwidth resources. The method comprises the following steps: mapping a first type of service data to a payload block at a specific position in a plurality of continuous payload blocks, wherein the plurality of consecutive payload blocks occupy a payload region of an optical data unit (ODU) frame; mapping the second type of service data to payload blocks at any position except the payload block at the specific position in the plurality of continuous payload blocks; mapping the ODU frame to an optical transmission unit (OTU) frame or a flexible OTN (FlexO)frame; and sending the OTU frame or the FlexO frame. The technical scheme disclosed by the invention can be applied to a scene of hybrid transmission of service data.

Description

technical field [0001] The present application relates to the technical field of optical communication, and in particular to a data transmission method and device in an optical transport network. Background technique [0002] In the optical transport network (OTN), the sender can map the service data to the payload area of ​​the optical payload unit k (OPUk) frame, and then add the OPUk overhead and optical data unit to the payload area of ​​the OPUk frame k (optical data unit-k, ODUk) overhead to obtain an ODUk frame; then, add optical transport unit k (optical transport unit-k, OTUk) overhead to the ODUk frame to obtain an OTUk frame, and finally, send the OTUk to the receiving end frame. Wherein, when k takes different values, the bit rate (ie transmission rate) of the OTUk frame is different. For example, the bit rate of the OTU2 frame is 10 gigabits (Gbit) / second (s); the bit rate of the OTU4 frame is 100 Gbit / s. [0003] OTN equipment uses time division multiplexing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L69/06H04L69/03H04J3/1652H04J3/1658H04J2203/0073H04J2203/0082H04B10/27H04J14/08H04J2203/0091
Inventor 苏伟吴秋游
Owner HUAWEI TECH CO LTD
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