WO2010025671A1 - 10吉比特光纤信道业务在光传输网中传输的方法和装置 - Google Patents

10吉比特光纤信道业务在光传输网中传输的方法和装置 Download PDF

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Publication number
WO2010025671A1
WO2010025671A1 PCT/CN2009/073708 CN2009073708W WO2010025671A1 WO 2010025671 A1 WO2010025671 A1 WO 2010025671A1 CN 2009073708 W CN2009073708 W CN 2009073708W WO 2010025671 A1 WO2010025671 A1 WO 2010025671A1
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Prior art keywords
signal
rate
10gfc service
10gfc
odule
Prior art date
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PCT/CN2009/073708
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English (en)
French (fr)
Inventor
孙萍
涂勇
Original Assignee
中兴通讯股份有限公司
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Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to EP09811046.3A priority Critical patent/EP2323285B1/en
Priority to KR1020117005630A priority patent/KR101177927B1/ko
Priority to JP2011525396A priority patent/JP5313351B2/ja
Publication of WO2010025671A1 publication Critical patent/WO2010025671A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25Arrangements specific to fibre transmission
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J3/00Time-division multiplex systems
    • H04J3/16Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605Fixed allocated frame structures
    • H04J3/1652Optical Transport Network [OTN]
    • H04J3/1658Optical Transport Network [OTN] carrying packets or ATM cells
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/27Arrangements for networking
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J14/00Optical multiplex systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04JMULTIPLEX COMMUNICATION
    • H04J2203/00Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0073Services, e.g. multimedia, GOS, QOS
    • H04J2203/0082Interaction of SDH with non-ATM protocols

Definitions

  • the present invention relates to the field of optical transport network technologies, and in particular, to a 10 Gigabit Fibre Channel (Fibre Channel 10 Gigabit, called 10GFC) service in the light A method and apparatus for transmission in an Optical Transport Network (OTN).
  • a 10 Gigabit Fibre Channel Fibre Channel 10 Gigabit, called 10GFC
  • OTN Optical Transport Network
  • FC Fibre Channel
  • SAN storage area network
  • Fibre Channel rates are growing from 1 Gbps (gigabits per second), 2 Gbps to 4 Gbps, 8 Gbps, 10 Gbps.
  • FC needs to perform wide-area long-distance transmission
  • WDM Wavelength Division Multiplexing
  • An optical channel transport unit (OTU), an optical channel data unit (ODU), and an optical channel payload unit (OPU) are ITU- The data format of the corresponding layer in the OTN network defined in the T G.709 protocol.
  • FC services at rates of 1 Gbps, 2 Gbps, 4 Gbps, and 8 Gbps there is a good fit relationship with the payload rate of OTU1 ( 2.488 Gbps ) or the payload rate of OTU 2 ( 9.953 Gbps ), which can be combined, cascaded, and directly Mapping and other methods are mapped, and bandwidth utilization is also sufficient.
  • OTU1 2.488 Gbps
  • OTU 2 9.953 Gbps
  • two 1GFC services can be transmitted on one OTU1 channel
  • 2GFC services can be transmitted in one OTU1 channel
  • 4GFC services can be transmitted through two OTU1 channels
  • 8GFC services can be transmitted through four OTU1 channels or one OTU2 channel .
  • the general processing method is to improve the transmission rate of the OTU2 to adapt to the 10GFC service. Due to the special rate, the OTU2 at this time has a frame format and the like.
  • an object of an embodiment of the present invention is to provide a method and apparatus for transmitting a 10 Gigabit fiber channel service in an optical transmission network, which is capable of implementing hybrid aggregation of a plurality of different 10G services. Into, the bandwidth resources of the optical transmission network can be utilized more effectively. According to an aspect of the present invention, a method for transmitting a 10 Gigabit Fibre Channel service in an optical transport network is provided.
  • the method for transmitting a 10 Gigabit fiber channel service according to the present invention in an optical transmission network includes: a receiving step of receiving a 10 Gigabit Fibre Channel 10GFC service signal from a user side; and an adjusting step of adjusting a rate of the received 10GFC service signal to 10GE Ethernet 10GE signal rate; framing step, mapping the rate adjusted 10GFC service signal to OTU2e/ODU2e signal; or mapping the rate adjusted 10GFC service signal to OTUle/ODUle signal; sending step, OTU2e/ The ODU2e signal is transmitted to the optical transmission network for transmission, or the OTUle/ODUle signal is transmitted to the optical transmission network for transmission.
  • the adjusting step comprises: performing 64/66B decoding on the 10GFC service signal to obtain a 10GFC service signal with a rate of 10.2 Gbps; encoding a 10GFC service signal with a rate of 10.2 Gbps to obtain a 10GFC service signal at a rate of 10GE.
  • the framing step includes: if the 10GFC service signal is finally mapped to the OTU2e/ODU2e signal, the fixed-filled 10GFC service signal is fixedly padded, and the fixed-filled 10GFC service signal is encapsulated into the optical channel payload unit OPU.
  • the framing step further comprises: adding an optical channel transmission unit OTU overhead to the ODU2e signal or the ODUle signal, encapsulating into an OTU frame, and outputting an OTU2e signal or an OTUle signal.
  • an apparatus for transmitting 10 Gigabit Fibre Channel services in an optical transport network is also provided.
  • the device for transmitting 10 Gigabit Fibre Channel service according to the present invention in an optical transmission network includes: a receiving module, configured to receive a 10 Gigabit Fibre Channel 10GFC service signal from a user side; and a rate adaptation module, configured to receive The rate of the 10GFC service signal is adjusted to 10 Gigabit Ethernet 10GE signal rate;
  • the OTU/ODU framing module is configured to map the 10GFC service signal after the rate adjustment to the OTU2e/ODU2e signal; or map the rate adjusted 10GFC service signal to the OTUle/ODUle signal; the sending module is configured to use the OTU2e/ODU2e signal Send to the optical transmission network for transmission, or send the OTUle/ODUle signal to the optical transmission network for transmission.
  • the rate adaptation module comprises: a decoding unit, configured to perform 64/66B decoding on the 10GFC service signal to obtain a 10GFC service signal with a rate of 10.2 Gbps; and an encoding unit, configured to encode the 10GFC service signal at a rate of 10.2 Gbps. , 10GFC service signal with a rate of 10GE signal rate is obtained.
  • the OTU/ODU framing module comprises:
  • the OPU mapping unit if the 10GFC service signal is finally mapped to the OTU2e/ODU2e signal, is used for performing fixed padding on the rate-adjusted 10GFC service signal, and encapsulating the fixed-filled 10GFC service signal into the optical channel payload unit OPU; or If the 10GFC service signal is finally mapped to the OTUle/ODUle signal, the 10GFC service signal after the rate adjustment is encapsulated into the optical channel payload unit OPU;
  • An ODU framing unit configured to add an ODU overhead of the optical channel data unit to the OPU, encapsulate the ODU frame, and output an ODU2e signal or an ODUle signal;
  • the OTU framing unit is configured to add an OTU overhead of the optical channel transmission unit to the ODU2e signal or the ODUle signal, encapsulate the OTU frame, and output an OTU2e signal or an OTUle signal.
  • a method of 10 Gigabit Fibre Channel services in an optical transport network is also provided.
  • the method for receiving the 10 Gigabit fiber channel service in the optical transmission network includes: a receiving step, receiving an OTU2e/ODU2e signal carrying the 10GFC service from the network side, or receiving an OTUle/ODUle signal carrying the 10GFC service from the network side; In the deframing step, the received OTU2e/ODU2e signal is deframed into a 10GFC service signal with a rate of 10 Gigabit Ethernet (GE) signal, or the received OTUle/ODUle signal is deframed to 10GFC at a rate of 10GE.
  • GE Gigabit Ethernet
  • the service signal; the recovery step, the rate of the 10GFC service signal is adjusted from the 10GE signal rate to the rate of the standard 10GFC service signal; and the sending step is to send the rate adjusted 10GFC service signal to the client side.
  • the step of deframing comprises: determining whether an optical channel transmission unit OTU signal or an optical channel data unit ODU signal is received from the network side, and if the OTU signal is, de-frame the OTU signal to output an ODU signal; The frame outputs an OPU signal, and the 10GFC service signal is demapped from the OPU signal.
  • an apparatus for receiving 10 Gigabit Fibre Channel services in an optical transport network is also provided.
  • the device for receiving the 10 Gigabit fiber channel service in the optical transmission network includes: a receiving module, configured to receive an OTU2e/ODU2e signal carrying the 10GFC service from the network side, or receive an OTUle/ODUle carrying the 10GFC service from the network side.
  • a receiving module configured to receive an OTU2e/ODU2e signal carrying the 10GFC service from the network side, or receive an OTUle/ODUle carrying the 10GFC service from the network side.
  • An ODU/OTU demapping module configured to deframe the received OTU2e/ODU2e signal into a rate 10GEC service signal of 10GE signal rate, or used to deframe the received OTUle/ODUle signal into a 10GFC service signal with a rate of 10GE signal rate; a rate recovery module for adjusting the rate of the 10GFC service signal by the 10GE signal rate The rate of the standard 10GFC service signal; the sending module, configured to send the rate adjusted 10GFC service signal to the client side.
  • the foregoing ODU/OTU demapping module includes:
  • the OTU de-frame unit is configured to perform an OTU2e signal or an OTUle signal for receiving an OTU2e signal or an OTUle signal carrying the 10GFC service from the network side, and output an ODU2e signal or an ODUle signal; and an ODU de-frame unit for the ODU2e signal or the ODUle signal Performing an optical channel data unit ODU de-frame, and outputting an optical channel payload unit OPU;
  • the OPU demapping unit is configured to demap the 10GFC service signal with a rate of 10GE from the OPU signal. It can be seen from the technical solution provided by the foregoing embodiments of the present invention that the 10GFC service signal is mapped into an OTU2e/ODU2e signal or an OTUle/ODUle signal by using a rate adaptation mechanism, and the mapped signal is performed in the OTN network. Transmission, which can bring the following beneficial effects:
  • FIG. 1 is a flowchart of a method for transmitting a 10GFC service in an OTN network according to an embodiment of the present invention
  • 2 is a flow chart of a method for omitting an ODU/OTU according to an embodiment of the present invention
  • FIG. 3 is a block diagram of a device for transmitting 10GFC services in an OTN network according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a method for de-archiving an ODU/OTU according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a 10GFC service in an OTN network according to an embodiment of the present invention
  • DETAILED DESCRIPTION OF THE EMBODIMENTS In order to make the objects, technical solutions and advantages of the embodiments of the present invention more comprehensible, the embodiments of the present invention will be described in detail below with reference to the embodiments and the accompanying drawings. The illustrative embodiments and the description of the present invention are intended to be illustrative of the invention, but are not intended to limit the invention.
  • Embodiment 1 The embodiment of the present invention provides a method for transmitting a 10GFC service in an OTN, where the rate of a 10GFC service signal received from a user side is first adjusted from a standard rate (ie, 10.51875 Gbps) to 10GE (10 Gigabit Ethernet). The signal rate (ie 10.3125 Gbps), and the adjusted 10GFC service signal is mapped to the OTU2e signal / ODU2e signal, or mapped to the OTUle signal / ODUle signal, and finally the OTU2e signal / ODU2e signal, or the OTUle signal / ODUle signal is sent Transfer to the OTN network.
  • a standard rate ie, 10.51875 Gbps
  • 10GE 10 Gigabit Ethernet
  • the ODUle 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.
  • FIG. 1 is a flowchart of a method for transmitting a 10GFC service in an OTN network according to an embodiment of the present invention. The specific steps are as follows: Step 11. Receive a 10GFC service signal with a rate of 10.51875 Gbps from the user side; 12.
  • Adjusting the rate of the received 10GFC service signal to a 10GE signal rate That is, the rate of the 10GFC service signal received in step 11 is adjusted from the standard 10.51875 Gbps to the 10GE signal rate, which is 10.3125 Gbps, which is the rate of the standard 10GE service.
  • the adjustment method in this step can be implemented by the following three methods: 1) Without damaging the bandwidth, the 10GFC service signal can be first decoded by 64B/66B, and the obtained 10GFC service signal with a rate of 10.2 Gbps is obtained. The optimized coding mode is encoded to obtain a 10GFC service signal with a rate of 10.3125 Gbps;
  • Idle idle frame
  • GFP Generic Framing Procedure
  • Step 13 Mapping the rate-adjusted 10GFC service signal to the OTU2e/ODU2e signal; or mapping the rate-adjusted 10GFC service signal to the OTUle/ODUle signal, and then performing step 14.
  • it if it is directly transmitted on the line, it is installed as an OTU2e or OTUle signal, and the user can select whether to package the OTU2e signal or the OTUle signal according to specific needs. If it is necessary to perform cross conversion on the backplane, it is encapsulated into an ODU2e or ODUle signal.
  • step 13 includes the following specific steps, see FIG. Step 130: Determine whether the 10GFC service signal is finally mapped to the OTU2e/ODU2e signal, or is finally mapped to the OTUle/ODUle signal. If the signal is finally mapped to the OTU2e/ODU2e signal, step 131 is performed. If the signal is finally mapped to the OTUle/ODUle signal, the step is performed. Step 131: Add a fixed port to the 10GFC service signal with a rate of 10.3125 Gbps, and then perform step 132. If the 10GFC service signal with a rate of 10.3125 Gbps is finally mapped to OTU2e/ODU2e, the 10.3125 Gbps signal is fixedly filled.
  • Step 132 Map the input signal into the OPU signal; that is, map the signals from step 130 and step 131 into the OPU signal. If the 10GFC service signal is finally mapped to the OTUle/ODUle signal, the fixed stuffing is not required, and the 10GFC service signal is directly encapsulated into the OPU signal.
  • Step 133 Add an ODU layer overhead to the OPU signal obtained in step 132, and package the result into an ODU frame.
  • Step 134 Determine whether to output an ODU signal or an OTU signal. If the OTU signal is output, perform step 135; if the ODU signal is output, directly output; Step 135: Add a force to the ODU input signal.
  • the OTU overhead is encapsulated into an OTU frame.
  • Steps 130 to 135 complete the process of mapping the 10GFC service signal to the OTU2e/ODU2e signal. Alternatively, mapping the 10GFC service signal to the OTUle/ODUle signal, and then performing step 14. Step 14.
  • the flexible configuration of the access service of the 10G service optical forwarding board can be flexibly configured, at least the same as the 10GE service sharing.
  • the board hardware expands the application range of the board, saves equipment costs and maintenance costs, and on the other hand helps to achieve hybrid aggregation access of multiple 10G services, so as to effectively utilize the bandwidth resources of the optical transmission network. .
  • FIG. 3 is a diagram of a 10GFC service sent in an OTN network according to an embodiment of the present invention.
  • the apparatus 30 includes: a receiving module 31, configured to receive a 10GFC service signal from a user side; the rate of the 10GFC service signal is 10.51875 Gbps; and a rate adaptation module 32 configured to receive the rate of the 10GFC service signal Adjusted to a 10GE signal rate; that is, the rate of received 10GFC service signals is adjusted from 10.51875 Gbps to 10.3125 Gbps;
  • the OTU/ODU framing module 33 is configured to map the rate adjusted 10GFC service signal to the OTU2e/ODU2e service signal, or to map the rate adjusted 10GFC service signal to the OTUle/ODUle service signal; that is, the rate is 10.3125 Gbps 10GFC service signals are mapped to OTU2e/ODU2e service signals; or 10GFC service signals with a rate of 10.3125 Gbps are mapped to OTUle/ODUle service signals.
  • the sending module 34 is configured to send the OTU2e/ODU2e signal to the OTN for transmission, or send the OTUle/ODUle signal to the OTN network for transmission.
  • the rate adaptation module 32 includes: a decoding unit, configured to perform 64/66B decoding on the 10GFC service signal to obtain a 10GFC service signal with a rate of 10.2 Gbps, and an encoding unit, configured to encode the 10GFC service signal with a rate of 10.2 Gbps.
  • a 10GFC service signal with a rate of 10GE is obtained, that is, a rate of 10.3125 Gbps is obtained.
  • a GFP Generic Framing Procedure
  • a GFP Generic Framing Procedure
  • the OTU/ODU framing module 33 includes: an OPU mapping unit 330, configured to: when the 10GFC service signal is finally mapped to the OTU2e/ODU2e signal, the rate adjusted 10GFC service signal is used in this embodiment. After fixed padding, the fixed-filled 10GFC service signal is encapsulated into the OPU; or When the 10GFC service signal is finally mapped to the OTUle/ODUle signal, the rate adjusted 10GFC service signal is encapsulated into the OPU;
  • the ODU framing unit 331 is configured to add an ODU overhead to the OPU signal, and package the result into an ODU frame, and output an ODU2e signal or an ODUle signal.
  • the OTU framing unit 332 is configured to add an OTU overhead to the ODU2e signal or the ODUle signal, and encapsulate the OTU into an OTU. Frame, output OTU2e signal or OTUle signal.
  • Embodiment 2 Another embodiment of the present invention provides a method for receiving a 10GFC service in an OTN, first demodulating an OTUle/ODUle signal or an OTU2e/ODU2e signal received from a network side to a rate of 10GE signal rate (ie, The 10.3125 Gbps 10GFC service signal is then adjusted to the rate of the standard 10GFC service signal (ie 10.51875 Gbps) and finally sent to the FC (fiber) device on the customer side. As shown in FIG. 4, FIG. 4, FIG.
  • Step 41 Receive an OTUle/ODUle signal carrying a 10GFC service from an OTN network or Receiving an OTU2e/ODU2e signal carrying the 10GFC service from the OTN network;
  • Step 42 Deframing the received OTU2e/ODU2e signal into a 10GFC service signal with a rate of 10GE, or deframing the received OTUle/ODUle signal into The 10GFC service signal at a rate of 10GE signal rate is then executed in step 43; that is, the received OTU2e/ODU2e signal is deframed to a rate of 10.3125 Gbps.
  • step 42 includes the following steps, see FIG.
  • Step 420 Determine whether the received OTU signal or the ODU signal, if it is an OTU signal, perform step 421; if it is an ODU signal, perform step 422; Step 421, de-frame the OTU signal, output an ODU signal, and then perform step 422
  • Step 422 Deframe the ODU signal, output the OPU signal, and then perform step 423
  • Step 423 Demap the 10GFC service signal from the OPU signal
  • Step 424 determine whether to demap from OPUle or demapping from OPU2e, if If it is OPU2e demapping, step 425 is performed; if it is OPUle demapping, step 426 is performed; the above OPUle means: In ITU-T Series G, Supplement 43, a lOGbe LAN PHY client signal is defined to the OTU.
  • Standard mapping method 10.3125 Gbps 10GE LAN maps directly to the OPU payload, then ODU framing, and finally to OTUle, the frame format is the same as the standard OTU2, but the rate is different.
  • the above OPU2e means: In ITU-T Series G, Supplement 43, a non-standard mapping method of a lOGbe LAN PHY client signal to an OTU is defined.
  • the 10.3125 Gbps 10GE LAN is fixedly padded, mapped to the OPU payload, then traversed by the ODU, and finally to the OTU2e.
  • the frame format is the same as the standard OTU2, except that the rate is different.
  • Step 425 removing the fixed padding
  • Step 426 recovering the rate of the 10GFC service signal from 10.3125 Gbps to 10.51875 Gbps
  • Steps 420 to 426 complete the received OTU2e/ODU2e signal, or the received OTUle/ODUle signal solution Framed into a 10GFC service signal with a rate of 10.3125 Gbps.
  • Step 43 Adjust the rate of the 10GFC service signal from the 10GE signal rate to the rate of the standard 10GFC service signal.
  • Step 44 Send the rate adjusted 10GFC service signal to the client side.
  • the flexible configuration of the access service of the 10G service optical forwarding board can be flexibly configured, and at least can be shared with the 10GE service.
  • the same single-board hardware expands the application range of the board, saves equipment costs and maintenance costs, and helps to achieve multiple differences on the other hand.
  • Hybrid aggregation access of 10G services to effectively utilize the bandwidth resources of the optical transport network.
  • other embodiments of the present invention also provide an apparatus for receiving 10 Gigabit Fibre Channel services in an optical transport network.
  • FIG. 6 is a block diagram of a receiving apparatus for a 10GFC service in an OTN network according to an embodiment of the present invention.
  • the apparatus 60 includes: a receiving module 61, configured to receive an OTU2e/ODU2e signal carrying a 10GFC service from a network side, or The network side receives the OTUle/ODUle signal carrying the 10GFC service;
  • the ODU/OTU demapping module 62 is configured to deframe the received OTU2e/ODU2e signal into a 10GFC service signal with a rate of 10GE, or defragment the received OTUle/ODUle signal to a rate of 10GE.
  • the above ODU/OTU deframing module 62 includes:
  • the OTU de-frame unit 621 is configured to perform OTU de-frameping on the OTU2e signal or the OTUle signal that receives the 10GFC service from the network side, and output an ODU2e signal or an ODUle signal.
  • the ODU deframing unit 622 is configured to perform ODU deframing on the ODU2e signal or the ODUle signal, and output an OPU signal.
  • the OPU demapping unit 623 is configured to demap the 10GFC service signal with a rate of 10GE signal rate from the OPU signal. That is, the 10GFC service signal with a rate of 10.3125 Gbps is demapped from the OPU signal. According to the foregoing technical solution, by de-mapping the OTU2e/ODU2e signal or the OTUle/ODUle signal to the 10GFC service signal, the flexible configuration of the access service of the 10G service optical forwarding board can be flexibly configured, and at least can be shared with the 10GE service.
  • the same board hardware expands the application range of the board, saves equipment costs and maintenance costs, and helps to achieve hybrid aggregation access of multiple 10G services on the other hand, so as to effectively utilize the bandwidth of the optical transmission network. Resources.
  • the above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is considered as the scope of protection of the present invention.

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  • Data Exchanges In Wide-Area Networks (AREA)

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10吉比特光纤信道业务在光传输网中传输的方法和装置 技术领域 本发明涉及光传送网技术领域,尤其涉及一种 10吉比特光纤信道(Fibre Channel 10 Gigabit , 筒称为 10GFC ) 业务在光传输网 (Optical Transport Network, 筒称为 OTN ) 中传输的方法和装置。 背景技术 光纤信道(Fibre Channel, 筒称为 FC ) 以可扩展性好、 高带宽、 通用 性强及传输距离远等优点成为存储区域网 ( Storage Area Network , 筒称为 SAN ) 的主流技术之一, 光纤信道速率从 1 Gbps (吉比特每秒)、 2Gbps发展 到 4 Gbps、 8Gbps、 10Gbps。 由于存储扩展的需求, FC需要进行广域长途传 输, 而波分复用 (Wavelength Division Multiplexing, 筒称为 WDM )设备因 其传输可靠、 带宽高的优势, 成为长途传输 FC业务的有效解决方案。 目前, 对于各种速率的 FC业务如何映射到波分复用网络中没有统一的 标准。 波分复用设备厂商也以有效利用带宽、 灵活配置等因素为原则, 对 FC 业务处理不断进行改善。 光信道传输单元 ( Optical channel transport unit, 筒 称为 OTU )、 光信道数据单元( Optical channel data unit, 筒称为 ODU )和光 信道净荷单元 (Optical channel payload unit, 筒称为 OPU ) 是 ITU-T G.709 协议中定义的 OTN网络中相应层面的数据格式。 对于速率为 lGbps、 2Gbps、 4Gbps、 8Gbps的 FC业务, 与 OTU1的净 荷速率( 2.488 Gbps )或者 OTU2的净荷速率( 9.953 Gbps )有较好的适配关 系, 可以通过组合、 级联、 直接映射等方法进行映射, 且带宽利用也较充分。 例如, 两个 1GFC业务可以在一个 OTU1通道进行传输; 2GFC业务可以在 一个 OTU1通道中进行传输; 4GFC业务可以通过两个 OTU1通道进行传输; 8GFC业务可以通过四个 OTU1通道或者一个 OTU2通道进行传输。 对于速 率是 10.51875Gbps的 10GFC业务,其速率大于 OTU2的净荷速率 9.953Gbps, 但又远小于 OTU3的净荷速率 39.813Gbps, 所以不能 10GFC业务直接映 射到 OTU2通道, 但如果将 3个 10GFC业务组合在一个 OTU3通道传输, 又会造成带宽较大的浪费。 然而, 在实现本发明的过程中, 发现现有技术中至少存在如下问题: 现 在一般的处理方法是提高 OTU2的传输速率以适应 10GFC业务, 由于速率 特殊, 此时的 OTU2虽然帧格式等符合标准, 但 10GFC OTU2已经不是标准 的 OTU2, 导致不易使 10GFC OTU2和标准的 OTU2—起混合汇聚, 从而会 造成在 OTU3应用上的困难。 发明内容 为了解决上述问题之一, 本发明的实施例的目的是提供一种 10吉比特 光纤信道业务在光传输网中传输的方法和装置,有助于实现多种不同 10G业 务的混合汇聚接入 , 从而能更有效的利用光传输网的带宽资源。 才艮据本发明的一个方面, 提供了一种 10吉比特光纤信道业务在光传输 网中发送的方法。 根据本发明的 10吉比特光纤信道业务在光传输网中发送的方法包括: 接收步骤, 从用户侧接收 10吉比特光纤信道 10GFC业务信号; 调整步骤,将接收到的 10GFC业务信号的速率调整为万兆以太网 10GE 信号速率; 成帧步骤, 将速率调整后的 10GFC业务信号映射为 OTU2e/ODU2e信 号; 或者, 将速率调整后的 10GFC业务信号映射为 OTUle/ODUle信号; 发送步骤, 将 OTU2e/ODU2e信号发送到光传输网上进行传输, 或者将 OTUle/ODUle信号发送到光传输网络上进行传输。 优选地, 上述调整步骤包括: 对 10GFC业务信号进行 64/66B解码, 得 到速率为 10.2Gbps的 10GFC业务信号; 对速率为 10.2Gbps的 10GFC业务信号进行编码, 得到速率为 10GE信 号速率的 10GFC业务信号。 优选地,成帧步骤包括: 若 10GFC业务信号最终映射为 OTU2e/ODU2e 信号, 则对速率调整后的 10GFC业务信号进行固定填充, 并将固定填充后的 10GFC业务信号封装到光信道净荷单元 OPU中; 或者, 若 10GFC业务信号 最终映射为 OTUle/ODUle信号,则将速率调整后的 10GFC业务信号封装到 光信道净荷单元 OPU中; 对 OPU加上光信道数据单元 ODU开销 ,封装成 ODU帧,输出 ODU2e 信号或者 ODUle信号。 优选地, 成帧步骤还包括: 对 ODU2e信号或者 ODUle信号加上光信 道传输单元 OTU开销 ,封装成 OTU帧,输出 OTU2e信号或者 OTUle信号。 根据本发明的另一方面 , 还提供一种 10吉比特光纤信道业务在光传输 网中发送的装置。 才艮据本发明的 10吉比特光纤信道业务在光传输网中发送的装置包括: 接收模块, 用于从用户侧接收 10吉比特光纤信道 10GFC业务信号; 速率适配模块, 用于将接收到的 10GFC业务信号的速率调整为万兆以 太网 10GE信号速率; 以及
OTU/ODU 成帧模块, 用于夺速率调整后的 10GFC 业务信号映射为 OTU2e/ODU2e 信号; 或者将速率调整后的 10GFC 业务信号映射为 OTUle/ODUle信号; 发送模块, 用于将 OTU2e/ODU2e信号发送到光传输网上进行传输, 或 者将 OTUle/ODUle信号发送到光传输网络上进行传输。 优选地, 速率适配模块包括: 解码单元, 用于对 10GFC业务信号进行 64/66B解码, 得到速率为 10.2Gbps的 10GFC业务信号; 编码单元, 用于对速率为 10.2Gbps的 10GFC业务信号进行编码, 得到 速率为 10GE信号速率的 10GFC业务信号。 优选地 , OTU/ODU成帧模块包括:
OPU映射单元, 若 10GFC业务信号最终映射为 OTU2e/ODU2e信号, 用于对速率调整后的 10GFC 业务信号进行固定填充, 并将固定填充后的 10GFC业务信号封装到光信道净荷单元 OPU中; 或者, 若 10GFC业务信号最终映射为 OTUle/ODUle信号, 用于将速 率调整后的 10GFC业务信号封装到光信道净荷单元 OPU中; ODU成帧单元 , 用于对 OPU加上光信道数据单元 ODU开销 , 封装成 ODU帧, 输出 ODU2e信号或者 ODUle信号;
OTU成帧单元, 用于对 ODU2e信号或者 ODUle信号加上光信道传输 单元 OTU开销 , 封装成 OTU帧, 输出 OTU2e信号或者 OTUle信号。 根据本发明的又一方面, 还提供一种 10吉比特光纤信道业务在光传输 网中接 4欠的方法。 根据本发明的 10吉比特光纤信道业务在光传输网中接收的方法包括: 接收步骤, 从网络侧接收承载 10GFC业务的 OTU2e/ODU2e信号, 或 者从网络侧接收承载 10GFC业务的 OTUle/ODUle信号; 解帧步骤, 将接收到的 OTU2e/ODU2e信号解帧为速率为 10千兆以太 网 (GE ) 信号速率的 10GFC业务信号, 或者接收到的 OTUle/ODUle信号 解帧为速率为 10GE信号速率的 10GFC业务信号; 恢复步骤, 将 10GFC业务信号的速率由 10GE信号速率调整为标准的 10GFC业务信号的速率; 发送步骤, 将速率调整后的 10GFC业务信号发送到客户侧。 优选地, 上述解帧步骤包括: 判断从网络侧接收的是光信道传输单元 OTU信号还是光信道数据单元 ODU信号, 若是 OTU信号, 对 OTU信号进行解帧, 输出 ODU信号; 对 ODU信号进行解帧 ,输出 OPU信号,从 OPU信号中解映射出 10GFC 业务信号。 根据本发明的再一方面, 还提供一种 10吉比特光纤信道业务在光传输 网中接收的装置。 根据本发明的 10吉比特光纤信道业务在光传输网中接收的装置包括: 接收模块,用于从网络侧接收承载 10GFC业务的 OTU2e/ODU2e信号, 或者从网络侧接收承载 10GFC业务的 OTUle/ODUle信号;
ODU/OTU解帧模块, 用于将接收到的 OTU2e/ODU2e信号解帧为速率 为 10GE信号速率的 10GFC业务信号, 或者用于将接收到的 OTUle/ODUle 信号解帧为速率为 10GE信号速率的 10GFC业务信号; 速率恢复模块, 用于将 10GFC业务信号的速率由 10GE信号速率调整 标准的 10GFC业务信号的速率; 发送模块, 用于将速率调整后的 10GFC业务信号发送到客户侧。 优选地, 上述 ODU/OTU解帧模块包括:
OTU解帧单元, 用于对从网络侧接收承载 10GFC业务的 OTU2e信号 或者 OTUle信号进行光信道传输单元 OTU解帧, 输出 ODU2e信号或者 ODUle信号; ODU解帧单元, 用于对 ODU2e信号或者 ODUle信号进行光信道数据 单元 ODU解帧, 输出光信道净荷单元 OPU;
OPU解映射单元, 用于从 OPU信号中解映射出速率为 10GE信号速率 的 10GFC业务信号。 由上述本发明的实施例提供的技术方案可以看出,通过利用速率适配机 制, 使 10GFC业务信号映射成 OTU2e/ODU2e信号 , 或者 OTUle/ODUle信 号, 并将映射后的信号在 OTN网络中进行传输, 由此可带来以下有益效果:
1 )有助于实现 10G业务光转发板的接入业务的灵活配置, 至少可以和 10GE 业务共享相同的单板硬件, 扩大了单板的应用范围, 节约了设备成本 和维护成本; 2 )有助于实现多种不同 10G业务的混合汇聚接入, 以更有效的利用光 传输网的带宽资源;
3 ) 由于 OTU2e/ODU2e信号或者 OTUle/ODUle是标准中定义的, 已 有相应的测试仪, 可以对其 OTN层进行测试。 附图说明 图 1为才艮据本发明实施例的 10GFC业务在 OTN网络中发送方法的流程 图; 图 2为才艮据本发明实施例的 ODU/OTU成帧的方法流程图; 图 3为 居本发明实施例的 10GFC业务在 OTN网络中发送装置的方框 图; 图 4为才艮据本发明实施例的 10GFC业务在 OTN网络中接收方法的流程 图; 图 5为才艮据本发明实施例的 ODU/OTU解帧的方法流程图; 图 6为根据本发明实施例的 10GFC业务在 OTN网络中接收装置的方框 图。 具体实施方式 为了使本发明实施例的目的、技术方案和优点更加清楚明白 , 下面结合 实施例和附图, 对本发明实施例^故进一步详细地说明。 在此, 本发明的示意 性实施例及说明用于解释本发明, 但并不作为对本发明的限定。 实施例一、 本发明的实施例提供一种 10GFC业务在 OTN中发送的方法,首先将从 用户侧接收的 10GFC业务信号的速率由标准速率 (即 10.51875Gbps ) 调整 为 10GE (万兆以太网) 信号速率 (即 10.3125Gbps ), 并将调整后的 10GFC 业务信号映射为 OTU2e信号 /ODU2e信号, 或者映射为 OTUle信号 /ODUle 信号, 最后将该 OTU2e信号 /ODU2e信号, 或者将 OTUle信号 /ODUle信号 发送到 OTN网络上进行传输。 在本实施例中, ODUle是 ITU-T Series G, Supplement 43中定义的一 种速率为 10.3558Gbps的光信道数据单元信号。 ODU2e是 ITU-T Series G, Supplement 43中定义的一种速率为 10.3995Gbps的光信道数据单元信号。 如图 1所示,图 1为才艮据本发明实施例的 10GFC业务在 OTN网络中发 送方法的流程图 , 具体步骤如下: 步骤 11、 从用户侧接收速率为 10.51875Gbps的 10GFC业务信号; 步骤 12、 将接收到的 10GFC业务信号的速率调整为 10GE信号速率; 也就是, 将步骤 11 中接收到的 10GFC 业务信号的速率由标准的 10.51875Gbps调整为 10GE信号速率, 该 10GE信号速率为 10.3125Gbps , 即 标准规定的 10GE业务的速率。 本步骤中的调整方式可采用以下三种方法来实现: 1 ) 在不损带宽的情况下, 可先对 10GFC业务信号进行 64B/66B解码, 得到的速率为 10.2Gbps的 10GFC业务信号,再以优化的编码方式进行编码, 得到速率为 10.3125Gbps的 10GFC业务信号;
2 ) 利用通用帧协议 ( Generic Framing Procedure, 筒称为 GFP )封包方 式, 对 10GFC 业务中的 Idle (空闲帧) 等进行压缩, 使其有效带宽成为 10.3125Gbps;
3 ) 利用先进先出 ( First In First OTU, 筒称为 FIFO ) 寄存器进行数据 緩存把带宽降为 10.3125Gbps。 本实施例中并不限制速率调整的实现方式。 步骤 13、将速率调整后的 10GFC业务信号映射为 OTU2e/ODU2e信号; 或者, 将速率调整后的 10GFC业务信号映射为 OTUle/ODUle信号, 然后执 行步骤 14。 在本实施例中, 若是在线路上直接传输, 则 装成 OTU2e或者 OTUle 信号, 并且用户可根据具体需要来选择是封装成 OTU2e 信号还是封装成 OTUle 信号。 如果是需要在背板上进行交叉转换, 则封装成 ODU2e 或者 ODUle信号。 在本发明的实施例中, 步骤 13包括如下具体步骤, 参见图 2。 步骤 130、 判断 10GFC业务信号最终映射为 OTU2e/ODU2e信号, 还 是最终映射为 OTUle/ODUle信号, 如果最终映射为 OTU2e/ODU2e信号, 则执行步骤 131 , 如果最终映射为 OTUle/ODUle信号, 则执行步骤 132; 步骤 131、 对速率为 10.3125Gbps的 10GFC业务信号添力口固定填充, 然后执行步骤 132; 如果速率为 10.3125Gbps 的 10GFC 业务信号最终映射为 OTU2e/ODU2e, 则对 10.3125Gbps信号进行固定填充, 再封装到 OPU净荷 ( Payload ), 本步骤中的固定填充是指固定填充字节, 是为了满足速率的要 求, 在一定的位置添加一定数量的字节, 并不限制该字节的具体数值, 而在 接收信号时, 只是按填充的位置将该字节去掉, 也不会处理这些字节的信息。 步骤 132、 将输入信号映射到 OPU信号中; 也就是将来自步骤 130 和步骤 131 的信号映射到 OPU信号中。 如果 10GFC业务信号最终映射为 OTUle/ODUle信号, 则不需要固定填充, 直接 将 10GFC业务信号封装到 OPU信号中。 步骤 133、对步骤 132获得的 OPU信号添加 ODU层开销,封装成 ODU 帧; 步骤 134、 判断是要输出 ODU信号还是 OTU信号, 如果输出 OTU信 号, 执行步骤 135; 如果输出 ODU信号, 直接输出; 步骤 135、 对 ODU输入信号添力。 OTU开销 , 封装成 OTU帧; 步骤 130〜步骤 135完成了将 10GFC业务信号映射为 OTU2e/ODU2e信 号; 或者, 将 10GFC业务信号映射为 OTUle/ODUle信号的过程, 然后执行 步骤 14。 步骤 14、把封装好的 OTUle/ODUle信号发送到 OTN网络上进行传输, 或者把封装好的 OTU2e/ODU2e信号发送到 OTN网络上进行传输。 由上述技术方案可知, 通过将 10GFC业务信号映射成 OTU2e/ODU2e 信号, 或者 OTUle/ODUle信号, 一方面有助于实现 10G业务光转发板的接 入业务的灵活配置, 至少可以和 10GE业务共享相同的单板硬件, 扩大了单 板的应用范围, 节约了设备成本和维护成本, 另一方面有助于实现多个不同 的 10G业务的混合汇聚接入, 以便有效的利用光传输网的带宽资源。 为了实现上述的方法实施例, 本发明的其他实施例还提供了一种 10吉 比特光纤信道业务在光传输网中发送的装置。 另需首先说明的是, 由于下述 的实施例是为实现前述的方法实施例 , 故该装置都是为了实现前述方法的各 步骤而设, 但本发明并不限于下述的实施例, 任何可实现上述方法的装置都 应包含于本发明的保护范围。 并且在下面的描述中, 与前述方法相同的内容 在 jtb省略, 以节约篇幅。 参见图 3 , 图 3为根据本发明实施例的 10GFC业务在 OTN网络中发送 装置的方框图 , 该装置 30包括: 接收模块 31 , 用于从用户侧接收 10GFC业务信号; 该 10GFC业务信 号的速率为 10.51875Gbps; 速率适配模块 32,用于将接收到的 10GFC业务信号的速率调整为 10GE 信号速率; 也就是将接收到的 10GFC业务信号的速率由 10.51875Gbps调整 为 10.3125Gbps;
OTU/ODU成帧模块 33 , 用于将速率调整后的 10GFC业务信号映射为 OTU2e/ODU2e业务信号; 或者用于将速率调整后的 10GFC业务信号映射为 OTUle/ODUle业务信号; 也就是将速率为 10.3125Gbps的 10GFC业务信号映射为 OTU2e/ODU2e 业务信号; 或者 夺速率为 10.3125Gbps 的 10GFC 业务信号映射为 OTUle/ODUle业务信号。 发送模块 34, 用于将 OTU2e/ODU2e信号发送到 OTN上进行传输, 或 者将 OTUle/ODUle信号发送到 OTN网络上进行传输。 上述速率适配模块 32包括: 解码单元, 用于对 10GFC 业务信号进行 64/66B 解码, 得到速率为 10.2Gbps的 10GFC业务信号; 编码单元, 用于对速率为 10.2Gbps的 10GFC业务信号进行编码, 得到 速率为 10GE信号速率的 10GFC业务信号, 也就是得到速率为 10.3125Gbps 在本发明的实施例中, 还可利用 GFP ( Generic Framing Procedure, 通 用帧协议) 封包方式, 对 10GFC业务中的 Idle等进行压缩, 使其有效带宽 成为 10.3125Gbps ; 或者利用 FIFO 寄存器进行数据緩存把带宽降为 10.3125Gbps。 本实施例中并不限制速率调整的实现方式 上述 OTU/ODU成帧模块 33包括: OPU映射单元 330 ,用于当 10GFC业务信号最终映射为 OTU2e/ODU2e 信号, 则对速率调整后的 10GFC业务信号进行固定填充后, 并将固定填充后 的 10GFC业务信号封装到 OPU; 或者 用于当 10GFC业务信号最终映射为 OTUle/ODUle信号, 则将速率调 整后的 10GFC业务信号封装到 OPU中;
ODU成帧单元 331 ,用于对 OPU信号加上 ODU开销 ,封装成 ODU帧 , 输出 ODU2e信号或者 ODUle信号; OTU成帧单元 332 ,用于对 ODU2e信号或者 ODUle信号加上 OTU开 销 , 封装成 OTU帧, 输出 OTU2e信号或者 OTUle信号。 由上述技术方案可知, 通过将 10GFC业务信号映射成 OTU2e/ODU2e 信号, 或者 OTUle/ODUle信号, 一方面有助于实现 10G业务光转发板的接 入业务的灵活配置, 至少可以和 10GE业务共享相同的单板硬件, 扩大了单 板的应用范围, 节约了设备成本和维护成本, 另一方面有助于实现多个不同 的 10G业务的混合汇聚接入, 以便有效的利用光传输网的带宽资源。 实施例二、 本发明的另一实施例提供一种 10GFC业务在 OTN中接收的方法,首先 将从网络侧接收的 OTUle/ODUle信号或者 OTU2e/ODU2e信号, 解帧为速 率为 10GE信号速率 (即 10.3125Gbps ) 的 10GFC业务信号, 然后夺速率调 整到标准的 10GFC业务信号的速率(即 10.51875Gbps ), 最后送入到客户侧 的 FC (光纤)设备。 如图 4所示,图 4为才艮据本发明实施例的 10GFC业务在 OTN网络中接 收方法的流程图 , 具体步骤如下: 步骤 41、 从 OTN网络上接收 载 10GFC业务的 OTUle/ODUle信号 或者从 OTN网络上接收承载 10GFC业务的 OTU2e/ODU2e信号; 步骤 42、将接收到的 OTU2e/ODU2e信号解帧为速率为 10GE信号速率 的 10GFC业务信号,或者将接收到的 OTUle/ODUle信号解帧为速率为 10GE 信号速率的 10GFC业务信号, 然后执行步骤 43; 也就是将接收到的 OTU2e/ODU2e信号解帧为速率为 10.3125Gbps 的
10GFC 业务信号, 或者将接收到的 OTUle/ODUle 信号解帧为速率为 10.3125Gbps的 10GFC业务信号, 然后执行步骤 43 在本发明的实施例中, 步骤 42包括如下步骤, 参见图 5。 步骤 420、 判断接收到的是 OTU信号还是 ODU信号 , 如果是 OTU信 号, 执行步骤 421 ; 如果是 ODU信号, 执行步骤 422; 步骤 421、对 OTU信号进行解帧 , 输出 ODU信号 , 然后执行步骤 422; 步骤 422、对 ODU信号进行解帧 , 输出 OPU信号 , 然后执行步骤 423; 步骤 423、 从 OPU信号解映射出 10GFC业务信号; 步骤 424、 判断是从 OPUle解映射, 还是从 OPU2e解映射, 如果是 OPU2e解映射, 则执行步骤 425; 如果是 OPUle解映射, 则执行步骤 426; 上述 OPUle是指: 在 ITU-T Series G, Supplement 43中 , 定义了一种 lOGbe LAN PHY客户信号到 OTU的非标准映射方式。 10.3125 Gbps的 10GE LAN直接映射到 OPU的净荷, 再经过 ODU成帧, 最后到 OTUle, 其帧格 式和标准的 OTU2—样 , 只是速率不同。 上述 OPU2e是指: 在 ITU-T Series G, Supplement 43中 , 定义了一种 lOGbe LAN PHY客户信号到 OTU的非标准映射方式。 10.3125 Gbps的 10GE LAN经过固定填充, 再映射到 OPU的净荷, 然后经过 ODU成帧, 最后到 OTU2e, 其帧格式和标准的 OTU2—样, 只是速率不同。 步骤 425、 去除固定填充; 步骤 426、 将 10GFC 业务信号的速率由 10.3125Gbps 恢复到 10.51875Gbps; 步骤 420〜步骤 426完成了将接收到的 OTU2e/ODU2e信号, 或者将接 到的 OTUle/ODUle信号解帧成速率为 10.3125Gbps的 10GFC业务信号。 步骤 43、 将 10GFC 业务信号的速率由 10GE信号速率调整为标准的 10GFC业务信号的速率; 步骤 44、 将速率调整后的 10GFC业务信号发送到客户侧。 由上述技术方案可知,通过将 OTU2e/ODU2e信号,或者 OTUle/ODUle 信号解映射为 10GFC业务信号, 一方面有助于实现 10G业务光转发板的接 入业务的灵活配置, 至少可以和 10GE业务共享相同的单板硬件, 扩大了单 板的应用范围, 节约了设备成本和维护成本, 另一方面有助于实现多个不同 的 10G业务的混合汇聚接入, 以便有效的利用光传输网的带宽资源。 为了实现上述的方法实施例, 本发明的其他实施例还提供了一种 10吉 比特光纤信道业务在光传输网中接收的装置。 另需首先说明的是, 由于下述 的实施例是为实现前述的方法实施例 , 故该装置都是为了实现前述方法的各 步骤而设, 但本发明并不限于下述的实施例, 任何可实现上述方法的装置都 应包含于本发明的保护范围。 并且在下面的描述中, 与前述方法相同的内容 在 jtb省略, 以节约篇幅。 参见图 6 , 图 6为根据本发明实施例的 10GFC业务在 OTN网络中接收 装置的方框图, 该装置 60包括: 接收模块 61 , 用于从网络侧接收承载 10GFC业务的 OTU2e/ODU2e信 号, 或者从网络侧接收承载 10GFC业务的 OTUle/ODUle信号;
ODU/OTU解帧模块 62,用于将接收到的 OTU2e/ODU2e信号解帧为速 率为 10GE信号速率的 10GFC业务信号,或者用于将接收到的 OTUle/ODUle 信号解帧成速率为 10GE信号速率的 10GFC业务信号; 速率恢复模块 63 , 用于将 10GFC业务信号的速率由 10GE信号速率调 整为标准的 10GFC业务信号的速率; 也就是将 ODU/OTU 解帧模块 62 输出的 10GFC 业务信号的速率由 10.3125Gbps调整为 10.51875Gbps; 发送模块 64 , 用于将速率调整后的 10GFC业务信号发送到客户侧。 上述 ODU/OTU解帧模块 62包括:
OTU解帧单元 621 , 用于对从网络侧接收承载 10GFC业务的 OTU2e 信号或者 OTUle信号进行 OTU解帧, 输出 ODU2e信号或者 ODUle信号;
ODU解帧单元 622 , 用于对 ODU2e信号或者 ODUle信号进行 ODU 解帧, 输出 OPU信号;
OPU解映射单元 623 , 用于从 OPU信号中解映射出速率为 10GE信号 速率的 10GFC业务信号。也就是从 OPU信号中解映射出速率为 10.3125Gbps 的 10GFC业务信号。 由上述技术方案可知,通过将 OTU2e/ODU2e信号,或者 OTUle/ODUle 信号解映射为 10GFC业务信号, 一方面有助于实现 10G业务光转发板的接 入业务的灵活配置, 至少可以和 10GE业务共享相同的单板硬件, 扩大了单 板的应用范围, 节约了设备成本和维护成本, 另一方面有助于实现多个不同 的 10G业务的混合汇聚接入, 以便有效的利用光传输网的带宽资源。 以上所述仅是本发明的优选实施方式, 应当指出, 对于本技术领域的普 通技术人员来说, 在不脱离本发明原理的前提下, 还可以作出若干改进和润 饰, 这些改进和润饰也应视为本发明的保护范围。

Claims

权 利 要 求 书
1. 一种 10吉比特光纤信道业务在光传输网中发送的方法, 其特征在于, 所述方法包括:
接收步骤, 从用户侧接收 10吉比特光纤信道 10GFC业务信号; 调整步骤, 将接收到的所述 10GFC业务信号的速率调整为万兆 以太网 10GE信号速率;
成帧步骤, 将速率调整后的所述 10GFC 业务信号映射为 OTU2e/ODU2e信号; 或者, 将速率调整后的所述 10GFC业务信号映 射为 OTUle/ODUle信号;
发送步骤, 将所述 OTU2e/ODU2e信号发送到光传输网上进行传 输, 或者将所述 OTUle/ODUle信号发送到光传输网络上进行传输。
2. 根据权利要求 1所述的方法 , 其特征在于 , 所述调整步骤包括:
对所述 10GFC业务信号进行 64/66B解码,得到速率为 10.2Gbps 的 10GFC业务信号;
对所述速率为 10.2Gbps的 10GFC业务信号进行编码, 得到速率 为所述 10GE信号速率的 10GFC业务信号。
3. 根据权利要求 1所述的方法, 其特征在于, 所述成帧步骤包括:
若所述 10GFC业务信号最终映射为 OTU2e/ODU2e信号, 则对 速率调整后的所述 10GFC业务信号进行固定填充, 并将固定填充后的 所述 10GFC业务信号封装到光信道净荷单元 OPU中; 或者, 若所述 10GFC业务信号最终映射为 OTUle/ODUle信号, 则将速率调整后的 所述 10GFC业务信号封装到光信道净荷单元 OPU中;
对所述 OPU加上光信道数据单元 ODU开销 , 封装成 ODU帧 , 输出 ODU2e信号或者 ODUle信号。
4. 根据权利要求 3所述的方法, 其特征在于, 所述成帧步骤还包括: 对所述 ODU2e信号或者 ODUle信号加上光信道传输单元 OTU 开销, 封装成 OTU帧, 输出 OTU2e信号或者 OTUle信号。 一种 10吉比特光纤信道业务在光传输网中发送的装置, 其特征在于, 所述装置包括:
接收模块, 用于从用户侧接收 10吉比特光纤信道 10GFC业务信 号;
速率适配模块, 用于将接收到的所述 10GFC业务信号的速率调 整为万兆以太网 10GE信号速率; 以及
OTU/ODU成帧模块,用于将速率调整后的所述 10GFC业务信号 映射为 OTU2e/ODU2e信号; 或者将速率调整后的所述 10GFC业务信 号映射为 OTUle/ODUle信号;
发送模块, 用于将所述 OTU2e/ODU2e信号发送到光传输网上进 行传输, 或者将所述 OTUle/ODUle信号发送到光传输网络上进行传 输。 根据权利要求 5所述的装置, 其特征在于, 所述速率适配模块包括: 解码单元, 用于对所述 10GFC业务信号进行 64/66B解码, 得到 速率为 10.2Gbps的 10GFC业务信号;
编码单元, 用于对所述速率为 10.2Gbps的 10GFC业务信号进行 编码, 得到速率为 10GE信号速率的 10GFC业务信号。 根据权利要求 5所述的装置, 其特征在于, 所述 OTU/ODU成帧模块 包括:
OPU 映射单元, 若所述 10GFC 业务信号最终映射为 OTU2e/ODU2e信号, 用于对速率调整后的所述 10GFC业务信号进行 固定填充, 并将固定填充后的所述 10GFC业务信号封装到光信道净荷 单元 OPU中;
或者, 若所述 10GFC业务信号最终映射为 OTUle/ODUle信号, 用于将速率调整后的所述 10GFC 业务信号封装到光信道净荷单元 OPU中;
ODU成帧单元, 用于对所述 OPU加上光信道数据单元 ODU开 销, 封装成 ODU帧, 输出 ODU2e信号或者 ODUle信号; OTU成帧单元, 用于对所述 ODU2e信号或者 ODUle信号加上 光信道传输单元 OTU开销, 封装成 OTU帧, 输出 OTU2e信号或者 OTUle信号。
8. 一种 10吉比特光纤信道业务在光传输网中接收的方法, 其特征在于, 所述方法包括:
接收步骤, 从网络侧接收 载 10GFC业务的 OTU2e/ODU2e信 号, 或者从网络侧接收承载 10GFC业务的 OTUle/ODUle信号;
解帧步骤, 将接收到的所述 OTU2e/ODU2e 信号解帧为速率为 10GE信号速率的 10GFC业务信号 ,或者接收到的所述 OTUle/ODUle 信号解帧为速率为 10GE信号速率的 10GFC业务信号;
恢复步骤, 将所述 10GFC业务信号的速率由所述 10GE信号速 率调整为标准的所述 10GFC业务信号的速率;
发送步骤, 将速率调整后的所述 10GFC业务信号发送到客户侧。
9. 根据权利要求 8所述的方法, 其特征在于, 所述解帧步骤包括:
判断从网络侧接收的是光信道传输单元 OTU信号还是光信道数 据单元 ODU信号, 若是所述 OTU信号, 对所述 OTU信号进行解帧, 输出 ODU信号;
对所述 ODU信号进行解帧 , 输出 OPU信号 , 从所述 OPU信号 中解映射出 10GFC业务信号。
10. 一种 10吉比特光纤信道业务在光传输网中接收的装置, 其特征在于, 所述装置包括: .
接收模块,用于从网络侧接收承载 10GFC业务的 OTU2e/ODU2e 信号, 或者从网络侧接收承载 10GFC业务的 OTUle/ODUle信号;
ODU/OTU解帧模块, 用于将接收到的所述 OTU2e/ODU2e信号 解帧为速率为 10GE信号速率的 10GFC业务信号, 或者用于将接收到 的所述 OTUle/ODUle信号解帧为速率为 10GE信号速率的 10GFC业 务信号;
速率恢复模块, 用于将所述 10GFC业务信号的速率由所述 10GE 信号速率调整标准的所述 10GFC业务信号的速率; 发送模块, 用于将速率调整后的所述 10GFC业务信号发送到客 户侧。
11. 根据权利要求 10所述的装置, 其特征在于, 所述 ODU/OTU解帧模块 包括:
OTU 解帧单元, 用于对从网络侧接收承载 10GFC 业务的所述 OTU2e信号或者 OTUle信号进行光信道传输单元 OTU解帧, 输出 ODU2e信号或者 ODUle信号;
ODU解帧单元, 用于对所述 ODU2e信号或者 ODUle信号进行 光信道数据单元 ODU解帧, 输出光信道净荷单元 OPU;
OPU解映射单元,用于从所述 OPU信号中解映射出速率为 10GE 信号速率的 10GFC业务信号。
PCT/CN2009/073708 2008-09-03 2009-09-02 10吉比特光纤信道业务在光传输网中传输的方法和装置 WO2010025671A1 (zh)

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