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Service signal dispatching method and device in optical transport network

A business signal, optical transport network technology, applied in the direction of selection device, time division multiplexing selection device, multiplexing system selection device, etc., can solve the problems of limited chip specifications, multiple wiring, complex equipment, etc.

Inactive Publication Date: 2006-10-04
HUAWEI TECH CO LTD
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Problems solved by technology

[0025] This solution only realizes the crossover function of asynchronous optical signals OTU1, OTU2, and OTU3, and cannot realize crossover scheduling processing for any service signal
At the same time, the cross-connect unit works with synchronous operation integrated circuits, which is limited by the chip specifications. STM-1 is used for small-grain scheduling. Because the scheduling particles are small, more wiring is required, resulting in more complex equipment.
In addition, the OTU1 / OTU2 / OTU3 transmission units cannot communicate with each other, and can only form an independent OTU1 or OTU2 or OTU3 OTN network, and OTN network networking is limited

Method used

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  • Service signal dispatching method and device in optical transport network
  • Service signal dispatching method and device in optical transport network
  • Service signal dispatching method and device in optical transport network

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Embodiment Construction

[0069] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0070] The present invention maps various service signals in the OTN to the GFU for the same cross-scheduling by defining a unified general encapsulation unit (General Framing Unit, "GFU" for short).

[0071] Considering that the current backplane technology in the industry can guarantee normal operation at a rate of 3.6Gbps, the rate of the GFU signal is set between 2.5Gbps and 3.6Gbps, and its bandwidth is greater than the maximum bandwidth of all 2.5Gbps-level service signals in the OTN. It is convenient to directly carry various service signals of 2.5G level. In a preferred embodiment of the present invention, for services greater than 2.5Gbps, such as service signals of 10Gbps level and 40Gbps level, the mode of virtual concatenation is used to map high-rate ...

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Abstract

The invention discloses a light transmission network business signal dispatching method and its device in the field of light transmission network business signal processing technology. It defines the speed rate suit for the common sealed unit of the current cross dispatching hardware ability, uses the virtual degree connecting group and the multiplexer mode to map each type of business to the common sealed unit and dose cross dispatching to the sealed unit. It adopts local clock to generate the frame structure and the frame head note of the common sealed unit and controls the cross movement of the cross dispatching unit.

Description

technical field [0001] The invention relates to a service signal processing technology in an optical transmission network, in particular to a cross dispatching technology of a service signal in an optical transmission network. Background technique [0002] Currently, Synchronous Digital Hierarchy ("SDH" for short) / Synchronous Optical Network (Synchronous Optical Network, "SONET" for short) is a technology mainly used in transmission networks. SDH / SONET network can carry various business signals, including voice and data services. SDH / SONET network equipment forms mainly include Terminal Multiplexer (TM) for short, Add Drop Multiplexer (ADM for short), Digital Crossconnect (DXC for short) ). The SDH / SONET network mainly realizes the up and down of services through the cross-scheduling of virtual containers (Virtual Containers, referred to as "VC") VC-4 / VC-3 / VC-12 and other high / low-order virtual containers, so as to realize the above various The function of the device form...

Claims

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Application Information

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IPC IPC(8): H04Q11/04H04Q11/00H04B10/12
Inventor 张建梅刘延明
Owner HUAWEI TECH CO LTD
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