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Method and device for processing services in optical transfer network

A technology of data service and transmission unit, applied in the fields of multiplexing, scheduling, and service mapping, it can solve the problems of bandwidth mismatch and low transmission efficiency, and achieve the effect of flexible scheduling

Inactive Publication Date: 2009-09-30
ZTE CORP
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Problems solved by technology

[0005] However, for non-Ethernet data services with a rate between 1G and 10G (2×FC—1.7Gbps, 4×FC—3.4Gbps, 8×FC—6.8Gbps and other rate services), mapping based on ODU1 or ODUGE particles The multiplexing method will cause relatively large bandwidth mismatch and low transmission efficiency

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  • Method and device for processing services in optical transfer network
  • Method and device for processing services in optical transfer network
  • Method and device for processing services in optical transfer network

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Embodiment Construction

[0050] The present invention will be described in further detail in conjunction with the accompanying drawings.

[0051] The present invention provides a mapping and multiplexing method on the optical transport network OTN for data services with a rate between 1G and 10G, especially 2×FC, 4×FC and 8×FC data services, and defines Three new optical channel data units ODUjFC (j=2, 4, 8), three new optical channel data branch units ODTUjkFC (jk=22, 43, 83), and corresponding OPU2, OPU3 branch time slots new division method. Based on the method and device of the present invention, end-to-end performance management of 2×FC, 4×FC and 8×FC data services can be realized, bandwidth utilization on OTN can be improved, and flexible scheduling of these services on OTN can be realized. The present invention includes the frame structure definition of ODUjFC and ODTUjkFC, the corresponding OPU2, OPU3 branch time slot division method, mapping multiplexing method and device, and cross scheduli...

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Abstract

The invention provides a method for processing data services with the rate between 1 and 10G, which is characterized by comprising the following steps: A, selecting a type of an optical channel payload unit OPUjFC used for transmitting the data services according to the rate of the data services; B, mapping data service signals to the optical channel payload unit OPUjFC, and filling an overhead area of an optical channel data unit; and C, multiplexing the optical channel data unit ODUjFC to various levels of the optical channel payload units to further generate a high-rate optical channel data unit and a high-rate optical channel transmission unit for transmission on an optical transfer network. Compared with the existing ODUk or ODUGE optical channel data unit, the method and the device can improve the bandwidth frequency of the data services with the rate between 1 and 10G born by OTN devices such as 2*FC, 4*FC, 8*FC and the like, and directly realize the transparent transmission on the OTN and the end-to-end performance management of the services such as 2*FC, 4*FC, 8*FC and the like, and flexible scheduling and services up and down of the services.

Description

technical field [0001] The invention relates to the field of optical communication, in particular to the technology of service mapping, multiplexing and scheduling in the optical transmission network. Background technique [0002] The development of data services has put forward new requirements for optical transport network (OTN) technology: on the one hand, OTN is required to provide simple, flexible and efficient mapping / demapping, multiplexing / demultiplexing technologies for different types of data service signals, In order to improve bandwidth utilization and reduce complexity and cost; on the other hand, it is required to have simple, flexible and efficient cross-scheduling capabilities for data services at the OTN level. [0003] The ITU-T G.709 proposal provides OTN basic mapping, multiplexing and virtual concatenation methods, and provides basic solutions for SDH, ATM and other data services based on GFP encapsulation. However, there are still great deficiencies in...

Claims

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Application Information

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IPC IPC(8): H04J14/08H04J3/16H04Q11/00
Inventor 古渊
Owner ZTE CORP
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