Method and apparatus for transmitting 10G bit optical fiber channel service in optical transmission network

A fiber channel and optical transport network technology, applied in the field of optical transport network, can solve problems such as direct mapping of 10GFC services, difficulties in OTU3 application, bandwidth waste, etc., and achieve the effects of saving equipment costs and maintenance costs, utilizing bandwidth resources, and flexibly configuring

Inactive Publication Date: 2009-01-28
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the 10GFC service with a rate of 10.51875Gbps, its rate is greater than the OTU2 payload rate of 9.953Gbps, but far less than the OTU3 payload rate of 39.813Gbps, so the 10GFC service cannot be directly mapped to the OTU2 channel, but if three 10GFC services Combined in one OTU3 channel for transmission, it will cause a large waste of bandwidth
[0005] However, in the process of realizing the present invention, it is found that there are at least the following problems in the prior art: the general processing method is to increase the transmission rate of OTU2 to adapt to 10GFC services. , but 10GFC OTU2 is no longer a standard OTU2, which makes it difficult to mix and converge 10GFC OTU2 and standard OTU2, which will cause difficulties in the application of OTU3

Method used

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  • Method and apparatus for transmitting 10G bit optical fiber channel service in optical transmission network
  • Method and apparatus for transmitting 10G bit optical fiber channel service in optical transmission network
  • Method and apparatus for transmitting 10G bit optical fiber channel service in optical transmission network

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Embodiment 1

[0058] Embodiments of the present invention provide a method for sending a 10GFC service in OTN. First, the rate of the 10GFC service signal received from the user side is adjusted from the standard rate (i.e. 10.51875Gbps) to a 10GE (10 Gigabit Ethernet) signal rate (i.e. 10.3125Gbps), and the adjusted 10GFC service signal is mapped to OTU2e signal / ODU2e signal, or mapped to OTU1e signal / ODU1e signal, and finally the OTU2e signal / ODU2e signal, or OTU1e signal / ODU1e signal is sent to the OTN network to transfer.

[0059] In this embodiment, ODU1e is an optical channel data unit signal with a rate of 10.3558 Gbps defined in ITU-T Series G, Supplement 43. ODU2e is an optical channel data unit signal with a rate of 10.3995 Gbps defined in ITU-T Series G, Supplement 43.

[0060] like figure 1 As shown, it is a flowchart of a method for sending 10GFC services in an OTN network in an embodiment of the present invention, and the specific steps are as follows:

[0061] Step 11, rec...

Embodiment 2

[0100] Another embodiment of the present invention provides a method for receiving 10GFC services in OTN. First, the OTU1e / ODU1e signal or OTU2e / ODU2e signal received from the network side is deframed into a 10GE signal rate (i.e. 10.3125Gbps) The rate of the 10GFC service signal is then adjusted to the rate of the standard 10GFC service signal (that is, 10.51875Gbps), and finally sent to the FC (optical fiber) device on the client side.

[0101] like Figure 4 As shown, it is a flowchart of a method for receiving 10GFC services in an OTN network in an embodiment of the present invention, and the specific steps are as follows:

[0102] Step 41, receiving the OTU1e / ODU1e signal bearing the 10GFC service from the OTN network or receiving the OTU2e / ODU2e signal bearing the 10GFC service from the OTN network;

[0103] Step 42. Deframe the received OTU2e / ODU2e signal into a 10GFC service signal with a rate of 10GE signal rate, or deframe the received OTU1e / ODU1e signal into a 10GF...

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Abstract

The invention discloses a method and a device for transmitting the 10 gigabit fiber channel service in an optical transmission network, belonging to the technical field of the optical transport network. The method comprises the following steps: firstly, a sender adjusts the speed rate of the user side receiving the 10 GFC service signal to the 10GE signal speed rate; secondly, the 10 GFC service signal with the adjusted speed rate is mapped into OTU2e/ODU2e signal or OTU1e/ODU1e signal sent to the optical transmission network to transmit; the receiver receives the OTU2e/ODU2e from the network side, or the OTU1e/ODU1e signal performs the decoding frame process to be the 10 GFC service signal with 10 GE speed rate; then the speed rate of the 10GFC service signal is adjusted to the standard; and finally, the 10GFC service signal with the adjusted speed rate is sent to the client side, thereby facilitating the mixing syntaxis access of various 10G services and utilizing the bandwidth resources of the optical transmission network more effectively.

Description

technical field [0001] The present invention relates to the field of optical transport network technology, in particular to a method and device for transmitting 10GFC (Fibre Channel 10Gigabit) services in OTN (Optical Transport Network, Optical Transport Network). Background technique [0002] Fiber Channel (Fibre Channel, FC) has become one of the mainstream technologies of Storage Area Network (Storage Area Network, SAN) due to its good scalability, high bandwidth, strong versatility and long transmission distance. bit per second), 2Gbps developed to 4Gbps, 8Gbps, 10Gbps. Due to the need for storage expansion, FC needs to perform wide-area long-distance transmission, and wavelength division multiplexing (Wavelength Division Multiplexing, WDM) equipment has become an effective solution for long-distance transmission of FC services due to its reliable transmission and high bandwidth advantages. [0003] At present, there is no unified standard on how to map FC services of v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/12
CPCH04J3/1658H04J2203/0082H04B10/25H04B10/27H04J14/00
Inventor 孙萍涂勇
Owner ZTE CORP
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