WO2019100725A1 - Procédé, appareil et dispositif pour transmettre et recevoir un signal à débit réduit - Google Patents

Procédé, appareil et dispositif pour transmettre et recevoir un signal à débit réduit Download PDF

Info

Publication number
WO2019100725A1
WO2019100725A1 PCT/CN2018/094556 CN2018094556W WO2019100725A1 WO 2019100725 A1 WO2019100725 A1 WO 2019100725A1 CN 2018094556 W CN2018094556 W CN 2018094556W WO 2019100725 A1 WO2019100725 A1 WO 2019100725A1
Authority
WO
WIPO (PCT)
Prior art keywords
data frame
sub
signal
flexo
rate signal
Prior art date
Application number
PCT/CN2018/094556
Other languages
English (en)
Chinese (zh)
Inventor
苏伟
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2019100725A1 publication Critical patent/WO2019100725A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • OTN Optical Transport Network
  • OTN optical Transport Network
  • ODSP optical digital signal processor
  • the existing MFI has strong correlation with the bearer service, and can only support integer multiple times of service signals, for example, a 100G optical transport unit (OTU) for description, that is, OTUC.
  • OTU optical transport unit
  • the existing MFI only supports signals such as 100G OTU4 and OTUCn (Optical Transport Unit Cn, n*100G optical transmission unit), which has great limitations.
  • OTUCn Optical Transport Unit Cn, n*100G optical transmission unit
  • For a non-integer multiple of the OTUCn-M sub-rate signal eg, 50G, 125G signal
  • the transmitting end transmits the OTUCn-M sub-rate signal through the MFI interface
  • the OTUCn signal including the OTUCn-M sub-rate signal is still transmitted.
  • the receiving end receives the OTUCn signal, it also needs to extract the OTUCn-M sub-rate signal.
  • each OTUC signal including the OTUCn-M sub-rate signal needs to form a flexible optical transmission network (Flexible OTN, FlexO) data frame when transmitting the OTUCn-M sub-rate signal
  • the receiving end receives the data.
  • An OTUC signal is extracted from each FlexO data frame, and then multiple OTUC signal combinations are restored to the OTUCn signal, and then the time slot distribution information of the OTUCn is extracted, and the OTUCn is converted into the OTUCn-M sub-port according to the time slot distribution information. Rate signal. This process is complicated and the transfer processing efficiency is low.
  • Embodiments of the present invention provide a method, device, and device for transmitting and receiving a sub-rate signal, so as to improve transmission processing efficiency of a sub-rate signal.
  • a first aspect of the present invention provides a method for transmitting a sub-rate signal, including:
  • the transmitting end maps the sub-rate signal to the payload area of the flexible optical network FlexO data frame; adds mapping information in the FlexO data frame, the mapping information includes frame header position information and effective time slot information, and the frame header position information is used to indicate the sub-rate
  • the mapping information includes frame header position information and effective time slot information
  • the frame header position information is used to indicate the sub-rate
  • the first occurrence of the data frame header of the signal in the payload area of the FlexO data frame the effective time slot information is used to indicate the valid time slot contained in the sub-rate signal, or the effective time slot information is used to indicate the FlexO data frame.
  • the time slot occupied by the sub-rate signal in the payload area; the FlexO data frame is transmitted.
  • the sub-rate signal is an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal includes an overhead of the OTUC signal and Mi effective time slots of the OTUC signal.
  • the transmitting end may be a Framer chip, an ODSP chip, or the like.
  • the receiving end can directly determine the sub-rate signal according to the mapping information, thereby speeding up the transmission processing efficiency of the sub-rate signal.
  • the sub-rate signal is an OTUC signal including an OTUC-Mi sub-rate signal; and the transmitting end performs the mapping of the sub-rate signal to the payload area of the flexible optical network FlexO data frame, specifically: performing: The OTUC signal including the OTUC-Mi subrate signal is directly bit mapped to the payload area of the FlexO data frame.
  • the effective time slot information is effective time slot distribution information of the OTUC signal including the OTUC-Mi sub-rate signal. It can be understood that, for example, in the 20 time slots included in the OTUC signal, according to the distribution information of the effective time slots, it can be known whether each of the 20 time slots is a valid time slot.
  • the sub-rate signal is an OTUC-Mi sub-rate signal
  • the transmitting end performs the mapping of the sub-rate signal to the payload area of the flexible optical network FlexO data frame, specifically: performing the sub-rate signal asynchronously.
  • the mi time slots mapped to the FlexO data frame are divided into k time slots, where k is greater than or equal to mi.
  • the effective time slot information is time slot distribution information occupied by the sub-rate signal in the k time slots divided by the payload area of the FlexO data frame.
  • the sending end before sending the mapping information in the FlexO data frame, the sending end further performs acquiring configuration information, where the configuration information is used to indicate valid time slot information.
  • the effective time slot information herein refers to the distribution position of the effective time slot included in the OTUC-Mi sub-rate signal when converted to the OTUC signal, thereby converting the OTUC-Mi sub-rate signal into the OTUC signal.
  • the transmitting end is an ODSP chip.
  • the sending end may obtain the configuration information from the management plane or the controller, or the management plane or the controller may send the configuration information to the sending end, which is not limited in this embodiment of the present invention.
  • the second aspect provides another method for transmitting a sub-rate signal according to an embodiment of the present invention, including:
  • the transmitting end determines mapping information of the FlexO-mi signal including the sub-rate signal, the mapping information includes frame header position information and effective time slot information, and the frame header position information is used to indicate that the data frame frame header of the sub-rate signal includes the FlexO-mi signal
  • the time slot occupied by the rate signal; the transmitting end restores the FlexO-mi signal to the FlexO data frame according to the mapping information; the transmitting end sends the FlexO data frame.
  • the second aspect is the processing performed for the FlexO-mi signal including the sub-rate signal.
  • the transmitting end may be an ODSP chip or the like. After the mapping information including the frame header position information and the effective slot information is added to the FlexO data frame by the transmitting end, the receiving end can directly determine the sub-rate signal according to the mapping information, thereby speeding up the transmission processing efficiency of the sub-rate signal.
  • the sub-rate signal is an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal includes an overhead of the OTUC signal and Mi effective time slots of the OTUC signal
  • the transmitting end performs the mapping information according to the mapping. Restoring the FlexO-mi signal to a FlexO data frame is specifically performed:
  • the transmitting end determines, according to the mapping information, the invalid time slot included in the OTUC signal including the OTUC-Mi sub-rate signal in the payload area of the FlexO data frame. The location and insert padding information at the location of the invalid time slot to revert to the FlexO data frame.
  • the transmitting end performs the restoration of the FlexO-mi signal to the FlexO data frame according to the mapping information, and specifically executes:
  • the transmitting end determines the time slot that is not occupied by the sub-rate signal in the payload area of the FlexO data frame according to the mapping information.
  • the location, and the padding information is inserted at the location of the time slot that is not occupied by the subrate signal to be restored to the FlexO data frame.
  • a third aspect of the present invention provides a method for receiving a sub-rate signal, including:
  • the receiving end receives the flexible optical network FlexO data frame; extracts mapping information from the FlexO data frame, the mapping information includes frame header position information and effective time slot information, and the frame header position information is used to indicate the data frame of the sub-rate signal included in the FlexO data frame.
  • a time slot occupied by the middle quilt rate signal; a sub-rate signal or a FlexO-mi signal including a sub-rate signal is generated from the payload area of the FlexO data frame according to the mapping information.
  • the sub-rate signal is an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal is an overhead including the OTUC signal and Mi effective time slots of the OTUC signal
  • the FlexO-mi signal includes the overhead of the FlexO data frame and the OTUC- The Mi sub-rate signal
  • the FlexO-mi signal contains the overhead of the FlexO data frame and the mi effective time slots of the FlexO data frame occupied by the OTUC-Mi sub-rate signal.
  • the receiving end may be a Framer chip, an ODSP chip, or the like.
  • the mapping information including the frame header position information and the effective slot information is added to the FlexO data frame by the transmitting end, the receiving end can directly determine the sub-rate signal according to the mapping information, thereby speeding up the transmission processing efficiency of the sub-rate signal.
  • the receiving end performs the generating of the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, and specifically: performing, according to the mapping information, determining the FlexO data frame in the payload area of the FlexO data frame. A valid time slot of the included subrate signal and a subrate signal is generated.
  • the receiving end is configured to generate, according to the mapping information, a FlexO-mi signal including a sub-rate signal from a payload area of the FlexO data frame, according to the mapping information, in the FlexO data frame.
  • the sub-rate signal contained in the FlexO data frame is determined in the payload area, and the FlexO-mi signal is generated based on the determined sub-rate signal and the overhead of the FlexO data frame included in the FlexO data frame.
  • the receiving end is configured to generate, according to the mapping information, a FlexO-mi signal including a sub-rate signal from a payload area of the FlexO data frame, according to the mapping information, in the FlexO data frame.
  • the effective time slot of the FlexO data frame carrying the sub-rate signal is determined in the payload area, and the FlexO-mi signal is generated according to the determined effective time slot of the FlexO data frame and the overhead of the FlexO data frame included in the FlexO data frame.
  • an embodiment of the present invention provides a sending apparatus, where the sending apparatus includes: a processing unit, configured to map a sub-rate signal to a payload area of a flexible optical network FlexO data frame; and a processing unit, further used in the FlexO Mapping information is added to the data frame, the mapping information includes frame header position information and effective time slot information, and the frame header position information is used to indicate the first occurrence of the data frame frame header of the sub-rate signal in the payload area of the FlexO data frame.
  • the effective time slot information is used to indicate the valid time slot included in the sub-rate signal, or the effective time slot information is used to indicate the time slot occupied by the sub-rate signal in the payload area of the FlexO data frame; the transmitting unit is configured to send the FlexO data frame.
  • the sending device may also implement part or all of the optional implementations performed by the transmitting end in the first aspect.
  • an embodiment of the present invention provides another sending apparatus, where the sending apparatus includes: a processing unit, configured to determine mapping information of a FlexO-mi signal including a subrate signal, where the mapping information includes frame header position information and valid time
  • the slot information is used to indicate that the data frame header of the subrate signal first appears in the payload area of the FlexO data frame including the FlexO-mi signal, and the effective slot information is used to indicate the subrate signal
  • the valid time slot included, or the effective time slot information is used to indicate the time slot occupied by the sub-rate signal in the payload area of the FlexO data frame
  • the processing unit is further configured to restore the FlexO-mi signal to the FlexO data according to the mapping information.
  • a frame a transmitting unit for transmitting a FlexO data frame.
  • the sending device may also implement part or all of the optional implementations performed by the transmitting end of the second aspect.
  • a transmitting device may be a transmitting end in the above method design or a chip disposed in the communication device.
  • the transmitting device includes: a transceiver, and a processor.
  • a memory is also included for storing computer executable program code; the processor is coupled to the memory and the transceiver.
  • the program code stored in the memory includes instructions that, when executed by the processor, cause the transmitting device to perform the method performed by the transmitting device in any of the possible designs of the fourth aspect or the fifth aspect above.
  • an embodiment of the present invention provides a receiving apparatus, including: a receiving unit, configured to receive a flexible optical network FlexO data frame, and a processing unit, configured to extract mapping information from a FlexO data frame, where the mapping information includes a frame header position.
  • the frame header location information is used to indicate the first occurrence of the data frame frame header of the sub-rate signal included in the FlexO data frame in the payload area of the FlexO data frame
  • the effective time slot information is used to indicate
  • the sub-rate signal contains a valid time slot, or the effective time slot information is used to indicate a time slot occupied by the sub-rate signal in the payload area of the FlexO data frame
  • the processing unit is further configured to use the payload of the FlexO data frame according to the mapping information
  • the region produces a sub-rate signal or a FlexO-mi signal including a sub-rate signal.
  • the receiving device may also implement part or all of the optional implementations performed by the receiving end of the third aspect.
  • a receiving device may be a transmitting end in the above method design or a chip disposed in the communication device.
  • the receiving device includes: a transceiver, and a processor.
  • a memory is also included for storing computer executable program code; the processor is coupled to the memory and the transceiver.
  • the program code stored in the memory includes instructions that, when executed by the processor, cause the receiving device to perform the method performed by the receiving device in any of the possible designs of the sixth aspect above.
  • a computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the first or third aspect and any possible implementation thereof Methods.
  • a computer readable medium storing program code for causing a computer to perform the first or third aspect described above and any possible implementation thereof when the computer program code is run on a computer The method in .
  • a device comprising: a transmitter and a receiver, wherein the transmitter can perform the method performed by the transmitting device in any one of the possible aspects of the fourth aspect or the fifth aspect; the receiver can perform the above The method performed by the receiving device in any of the six possible designs.
  • FIG. 1 is a schematic structural diagram of a possible communication system according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of communication between chips according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of a method for transmitting and receiving a seed rate signal according to an embodiment of the present invention
  • FIG. 4a is a schematic diagram of a FlexO data frame structure according to an embodiment of the present invention.
  • FIG. 4b is a schematic diagram of another FlexO data frame structure according to an embodiment of the present invention.
  • FIG. 5 is a schematic flowchart diagram of another method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart diagram of another method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • FIG. 7a is a diagram showing an example of a method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • FIG. 7b is a diagram showing an example of a method for transmitting and receiving another seed rate signal according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a sending apparatus according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another sending apparatus according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a receiving apparatus according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of another receiving apparatus according to an embodiment of the present invention.
  • OTUC signal is a 100G optical transmission unit
  • OTUCn signal n*100G optical transmission unit, composed of n OTUC signals
  • OTUCn-M signal a sub-rate signal of M time slots containing an optical transmission unit of n*100G, that is, a sub-rate signal of an OTUCn signal, or an optical transmission signal of an integer multiple of 100G.
  • the OTUC-Mi signal After the OTUCn signal is distributed as n OTUC signals, the OTUC-Mi signal includes the overhead of the i-th OTUC signal and the included Mi effective time slots. For example, the Mi corresponding to the second OTUC signal is M2.
  • an OTUC signal can form a FlexO data frame, which can also be referred to as a FlexO signal.
  • the FlexO data frame includes an Alignment Marker (AM) area, a Fill (PAD) area, an Overhead (OH) area, a payload area, and a check area, wherein the AM area, the PAD area, and the OH area.
  • the data in the zone is the overhead of the FlexO data frame.
  • FlexO-mi signal contains the overhead of the FlexO data frame and the payload area of the FlexO data frame is occupied by the OTUC-Mi sub-rate signal.
  • the payload area of the FlexO data frame is divided into k time slots, where k is greater than or equal to mi. Where i is the same as i in the OTUC-Mi subrate signal.
  • the OTUC-Mi sub-rate signal is the overhead of the i-th OTUC signal and the included Mi active time slots. Therefore, the FlexO-mi signal is also indirectly derived from the OTUC signal of the ith channel.
  • FIG. 1 is a schematic structural diagram of a possible communication system according to an embodiment of the present invention. As shown in FIG. 1, two optical transmission devices, namely an optical transmission device 1 and an optical transmission device 2, are respectively included, wherein the optical transmission device 1 and the optical transmission device 2 implement data transmission through an optical transmission network.
  • two optical transmission devices namely an optical transmission device 1 and an optical transmission device 2
  • the optical transmission device 1 and the optical transmission device 2 implement data transmission through an optical transmission network.
  • FIG. 2 is a schematic diagram of communication between chips according to an embodiment of the present invention. As shown in FIG. 2, it includes a host board chip, an ODSP chip, and an optical module.
  • the ODSP chip can also be a PMA (Physical Medium Attachment) chip.
  • Both the optical transmission device 1 and the optical transmission device 2 shown in FIG. 1 may include the chip shown in FIG. 2.
  • the host board chip in the optical transmission device 1 can transmit the service signal to the optical transmission device 2 through the ODSP chip, the optical module, and the optical transmission network.
  • the optical transmission device 2 receives the service signal through the optical transmission network, the optical module, and the ODSP chip.
  • the ODSP chip of the optical transmission device 2 forwards the signal to the host board chip of the optical transmission device 2, so as to complete the reception and transmission of the service signal.
  • the host board chip can be a Framer chip
  • the ODSP is located on the optical module side
  • the host board chip and the ODSP chip are interoperable through the MFI interface. It should be noted that the present invention does not impose any limitation on the chip name passing through the MFI interface, and ODSP, Framer, and the like are merely examples.
  • the host board chip and the ODSP chip may be disposed on a single board, or may be disposed on different boards, which is not limited in this embodiment of the present invention. Both can establish a communication connection through the MFI interface.
  • the host board chip transmits the OTUCn-M sub-rate signal, and the MFI interface is used as the FOIC 1.4.
  • FOIC1.4 can be represented by FOICt.k, where Ct represents the rate (C corresponds to 100, representing 100Gbps, Ct is represented as t 100Gbps), and k represents the number of logical channels supported by the optical module or interface.
  • FOIC2.4 indicates that the support rate is 200Gbps, there are 4 logical ports, and the corresponding optical module also has 4 ingress ports.
  • the FOIC1.4 used here indicates that the support rate is 100Gbps, and there are 4 logical ports, corresponding to The optical module also has 4 ingress ports.
  • the host board chip fills the position of the OTUCn-M sub-rate signal in the invalid time slot according to the distribution of the effective time slots of the OTUCn-M sub-rate signal to obtain the OTUCn signal.
  • the FOIC1.4 interface is used to carry the OTUCn signal.
  • One OTUC signal in the OTUCn signal forms a FlexO data frame and is then split into 4 physical channels.
  • the specific processing includes the following:
  • the OTUCn signal is distributed as n 100G OTUC signals
  • FEC Forward Error Correction
  • the host board chip maps the OTUCn-Mi sub-rate signal to the flexible optical network FlexO data frame. Payload area; the host board chip adds mapping information in the FlexO data frame, the mapping information includes frame header position information and effective time slot information, and the frame header position information is used to indicate the data frame header of the OTUCn-Mi subrate signal in the FlexO data.
  • the effective slot information is used to indicate the valid time slot contained in the OTUCn-Mi subrate signal, or the effective slot information is used to indicate the payload area of the FlexO data frame.
  • the time slot occupied by the OTUCn-Mi subrate signal; the host board chip transmits the FlexO data frame.
  • the ODSP chip can directly determine the frame header position information and the effective time slot information according to the mapping information included in the FlexO data frame, thereby directly determining the OTUCn-Mi sub-rate signal.
  • the above is a brief description of the host board chip as the transmitting end and the ODSP chip as the receiving end.
  • the application further includes the technical solution that the ODSP chip is the transmitting end and the host board chip is the receiving end, which can also improve the transmission processing efficiency of the OTUCn-M sub-rate signal. .
  • the transmitting end and the receiving end in the embodiments of the present invention are not limited to the host board chip and the ODSP chip.
  • the sub-rate signal involved in the embodiment of the present application refers to a part of the source signal, and specifically consists of the overhead of the source signal and a part of the time slot.
  • the OTUCn signal is the source signal and the OTUCn-M signal is part of the OTUCn signal, ie the OTUCn-M signal is the sub-rate signal.
  • the embodiment of the present invention does not limit the source signal, and may be an OTUCn signal, an n-channel FlexE signal, or the like.
  • the sub-rate signal in the embodiment of the present invention is not limited to the OTUCn-M, OTUC-Mi sub-rate signal, and may also be a FlexE sub-rate signal, etc., such as FlexE-m, indicating the overhead of the signal by the n-way FlexE and the m effective time slots.
  • FIG. 3 is a schematic flowchart diagram of a method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • the transmitting end takes the Framer chip as an example
  • the receiving end uses the ODSP chip as an example for description.
  • the method for transmitting and receiving the rate signal includes steps 301 to 308, as described in detail below.
  • the Framer chip maps the sub-rate signal to the payload area of the flexible optical network FlexO data frame.
  • the payload area is used to carry the sub-rate signal.
  • the sub-rate signal may be an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal.
  • the signal sent by the transmitting end to the receiving end may be an OTUCn-M sub-rate signal. Since the OTUCn-M sub-rate signal is split into n-way OTUC-Mi signals during the transmission process, the Framer chip pair For the processing of the OTUC-Mi signal, refer to the detailed description of steps 301 to 308 in the embodiment of the present invention.
  • the signal sent by the transmitting end to the receiving end may be an OTUCn signal including an OTUCn-M sub-rate signal.
  • the OTUCn signal is split into n-way OTUC signals during transmission, for each frame OTUC of the Framer chip.
  • steps 301 to 308 for each frame OTUC of the Framer chip.
  • the Framer chip adds mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information.
  • one OTUC signal corresponds to one FlexO data frame.
  • mapping information to the FlexO data frame, the process of restoring each OTUC signal combination to OTUCn and extracting the time slot distribution information of the OTUCn signal is eliminated, thereby speeding up the transmission processing efficiency of the OTUC-Mi sub-rate signal, and further The transmission processing efficiency of the OTUCn-M sub-rate signal is improved.
  • the Framer chip may add mapping information in the PAD area of the FlexO data frame, so that the mapping information may be determined in the case of determining the frame header of the FlexO data frame.
  • the position of the mapping information in the FlexO data frame is not limited in the embodiment of the present invention.
  • FIG. 4a is a schematic diagram of a FlexO data frame structure according to an embodiment of the present invention.
  • the FlexO data frame structure includes an Alignment Marker (AM) area, a Fill (PAD) area, an Overhead (OH) area, a payload area, and a check area.
  • AM Alignment Marker
  • PAD Fill
  • OH Overhead
  • payload area is an area other than the AM area
  • PAD PAD
  • OH Overhead
  • the payload area is an area other than the AM area
  • the PAD area the OH area
  • the check area the single data frame payload area of the FlexO contains 5130 16-byte blocks.
  • the data frame of each OTUC signal includes 20 times. Gap (TS#1, TS#2, ..., TS#20), based on 16-byte division, one OTUC frame per line overhead is one 16-byte block. In the case where the data frame of the OTUC signal is placed in the payload area of the FlexO data frame, the header position information and the effective slot information are determined.
  • the frame header location information is specifically determined by determining the first occurrence of the data frame header of the OTUC signal in the payload area.
  • the location of the data frame header is the location of the FA&OH, where FA (Frame Alignment) indicates the frame header of the data frame of the OTUC signal, and OH indicates the overhead of the data frame of the OTUC signal.
  • the effective time slot information is the effective time slot distribution information of the OTUC signal.
  • the positions of the effective time slots of the OTUC signal are TS#1, TS#3, TS#5, TS#7, TS#9.
  • the effective time slot information is represented by 20 bits, it can be determined whether the time slots of TS#1 to TS#20 are valid according to the value of each bit from left to right. . For example, if the bit value is 1 and the bit value is 0, the valid time slot information of the OTUC signal in the above example is 10101010111000000001.
  • the data frame frame header of the OTUC signal may be first determined according to the frame header position information, and each 20 *16 byte block immediately after the data frame frame header may be determined according to the effective time slot information.
  • the OTUC-Mi sub-rate signal can be determined according to the effective time slot information and the data frame frame header, which speeds up the transmission processing efficiency of extracting the sub-rate signal according to the OTUC signal.
  • the sub-rate signal is an OTUC-Mi sub-rate signal
  • the data frame of the OTUC-Mi sub-rate signal is placed in the payload area of the FlexO data frame, Frame header position information and valid slot information.
  • the structure of the data frame of the OTUC-Mi sub-rate signal may refer to the upper half of FIG. 4b, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal (such as FA&OH in FIG. 4b) and the Mi of the OTUC signal.
  • a valid time slot that is, an OTUC-Mi sub-rate signal does not include an invalid time slot.
  • the frame header position information is specifically represented by determining a position where the data frame frame header of the OTUC-Mi sub-rate signal first appears in the payload area.
  • the effective time slot information is the number of valid time slots included in the OTUC-Mi sub-rate signal, that is, Mi.
  • the data frame frame header of the OTUC-Mi sub-rate signal may be first determined according to the frame header position information, and then the Mi *16 byte blocks immediately after the data frame frame header are acquired, thereby determining the OTUC. - Mi sub-rate signal, which speeds up the transmission processing efficiency of the sub-rate signal.
  • the sub-rate signal is mapped to the payload area of the FlexO data frame by means of bit synchronization mapping.
  • the sub-rate signal is mapped to the payload area of the FlexO data frame by means of asynchronous mapping, and the sub-rate signal is taken as an example of the OTUC-Mi sub-rate signal.
  • the OTUC-Mi sub-rate signal is mapped to the FlexO data frame payload area, and the number of time slots of the FlexO data frame payload area occupied by the OTUC-Mi sub-rate signal is recorded, where is represented by mi, where k is greater than or equal to Mi.
  • the header position information and the effective slot information are determined in the case where the OTUC-Mi sub-rate signal is placed in the payload area of the FlexO data frame.
  • the frame header position information is specifically represented by determining a position where the data frame frame header of the OTUC-Mi sub-rate signal first appears in the payload area.
  • the valid time slot information is the time slot occupied by the sub-rate signal in the payload area of the FlexO data frame.
  • the effective time slot information is time slot distribution information occupied by the sub-rate signal in the k time slots divided by the payload area of the FlexO data frame. For the receiving end, it may first determine the mi time slots occupying the FlexO signal according to the time slot distribution information of the FlexO signal occupied by the OTUC-Mi sub-rate signal, and then find the OTUC-Mi sub-rate signal according to the frame head position information. The data frame header is then directly demapped from the mi time slots, thereby speeding up the transmission processing efficiency of the subrate signal.
  • the number of least significant time slots of the OTUC-Mi sub-rate signal is 1, the number of maximum valid time slots is 20, if the size of the time slot included in a set of FlexO data frames is set. It should be a 20*16 byte block.
  • the number of time slots divided by 20*16 byte blocks in the FlexO data frame is not limited, for example, divided into 20 time slots, 40 time slots. Gap, 80 time slots, etc.
  • An example is divided into 20 time slots, each time slot also containing a 16 byte block such that the rate of a single time slot of a FlexO data frame is the rate of a single time slot in an OTUC signal or an OTUC-Mi subrate signal.
  • the OTUC-Mi subrate signal is mapped to the payload area of the FlexO data frame.
  • the first Mi slots are valid slots of the OTUC-Mi subrate signal. Occupied, that is, the number Mi occupied by the active time slots of the OTUC-Mi sub-rate signal in these 20 time slots is the same as the number of occupied time slots in the FlexO data frame.
  • the effective time slot information can be indicated by the number of occupied time slots mi in the FlexO data frame, and can also be represented by the number Mi of valid time slots included in the OTUC-Mi sub-rate signal.
  • the data frame frame header of the OTUC signal involved in the embodiment of the present invention first appears in the payload area, or the data frame frame header of the other sub-rate signal first appears in the payload area.
  • the location of the bit may be the first occurrence of the bit position in the payload area, the byte position, the 16 bytes as a whole considered position, and the like, which is not limited in this embodiment of the present invention.
  • the Framer chip performs FEC encoding processing on the FlexO data frame, for example, performs RS (544, 514) FEC encoding processing, and adds FEC encoding information in the check area of the FlexO data frame to obtain the encoded FlexO data frame.
  • the Framer chip performs FEC encoding processing on the FlexO data frame that does not add the encoding information in the check area (or expressed as the FEC area), and adds the FEC encoding information obtained by the encoding process to the check area to obtain the encoded FlexO. Data Frame.
  • the Framer chip sends the FlexO data frame.
  • the FlexO data frame sent here is a FlexO data frame obtained after encoding.
  • the FlexO data frame transmitted here is a FlexO data frame obtained after adding the mapping information.
  • the Framer chip divides the FlexO data frame into FOIC1.x signals based on the MFI interface, where x is a positive integer.
  • the ODSP chip receives the FlexO data frame.
  • the ODSP chip receives the FlexO data frame.
  • the ODSP signal identifies FOIC1.x and reorganizes into a FlexO data frame.
  • the ODSP chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC encoding information in the check area of the FlexO data frame to obtain the decoded FlexO data frame.
  • the ODSP chip performs FEC decoding processing on the FlexO data frame, for example, performs RS (544, 514) FEC decoding processing, and deletes the FEC encoding information in the check area of the FlexO data frame, To get the decoded FlexO data frame.
  • the ODSP chip extracts mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information.
  • the FlexO data frame here is a FlexO data frame obtained after decoding.
  • the FlexO data frame here is the FlexO data frame received through step 305.
  • the ODSP chip can extract frame header location information and valid slot information in the FlexO data frame.
  • the mapping information may be extracted in the padding area.
  • the ODSP chip generates the sub-rate signal or a FlexO-mi signal including the sub-rate signal from a payload area of the FlexO data frame according to the mapping information.
  • the ODSP chip can terminate the overhead of the FlexO data frame, that is, regardless of the data of the AM area, the PAD area, and the OH area in the FlexO data frame, only from the net of the FlexO data frame.
  • the sub-rate signal is extracted in the charge region. Extracting the sub-rate signal from the payload area of the FlexO data frame comprises: first determining the location of the sub-rate signal in the payload area of the FlexO data frame according to the frame header position information, and further extracting the sub-rate signal according to the effective time slot information. The effective time slot, thus producing a sub-rate signal.
  • the position of the OTUC signal in the payload area of the FlexO data frame is first determined according to the frame header position information, and then according to the effective time slot.
  • the distribution information only extracts valid time slots, and generates an OTUC-Mi sub-rate signal according to the data frame header of the OTUC signal and the extracted effective time slot.
  • the FlexO data frame it is determined according to the OTUC-Mi sub-rate signal. If the FlexO data frame is determined by the asynchronous mapping, the OTUC-Mi is first determined according to the effective time slot information of the sub-rate signal OTUC-Mi in the FlexO. The occupied mi slots in the data frame, and then determine the starting position of the OTUC-Mi signal according to the frame header position information, and then directly transmit the OTUC-Mi sub-rate signal from the occupied mi slots in the FlexO data frame. After demapping, the OTUC-Mi sub-rate signal can be obtained.
  • the ODSP chip may not terminate the overhead of the FlexO data frame, that is, retain the data of the AM area, the PAD area, the OH area in the FlexO data frame, and retain the payload of the FlexO data frame.
  • Subrate signal in the zone Specifically, the location of the sub-rate signal in the payload area of the FlexO data frame is first determined according to the frame header location information, and then the mi slots of the FlexO data frame occupied by the sub-rate signal are determined according to the effective slot information, and finally the FlexO data is determined.
  • a time slot in a frame that is not occupied by a sub-rate signal, and a time slot that is not occupied by the sub-rate signal is directly deleted from the FlexO data frame.
  • the FlexO-mi signal can be generated based on the data of the AM zone, the PAD zone, the OH zone in the FlexO data frame, and the mi time slots of the FlexO data frame occupied by the subrate signal.
  • the ODSP chip transmits the sub-rate signal or the FlexO-mi signal including the sub-rate signal through the optical module.
  • the scheme of mapping the sub-rate signal to the FlexO data frame through the asynchronous mapping can be applied to any sub-rate signal, that is, any sub-rate signal can be mapped into the time slot divided by the FlexO signal, and then in the ODSP.
  • the chip After receiving the FlexO data frame, the chip normalizes any sub-rate signal to the FlexO-mi signal and transmits the FlexO-mi signal through the optical module. This can realize the transmission of any sub-rate signal through the MFI interface, which expands the scope of application of the MFI interface.
  • the ODSP chip after receiving the FlexO data frame, can directly determine the frame header position information and the effective time slot information according to the mapping information included in the FlexO data frame, and thus can directly determine the sub-rate signal. This eliminates the process of restoring each OTUC signal combination to OTUCn and extracting the time slot distribution information of the OTUCn signal, and adding mapping information through the FlexO data frame corresponding to each OTUC signal, thereby speeding up the transmission of the subrate signal. Processing efficiency.
  • the embodiment shown in FIG. 3 can be applied to the communication system shown in FIG. 1. If the Framer chip, the ODSP chip, and the optical module included in the optical communication device 1 execute the embodiment shown in FIG. 3, the light of the optical communication device 1 The module transmits the sub-rate signal or the FlexO-mi signal including the sub-rate signal to the optical communication device 2 through the optical transmission network, so that the optical communication device 2 receives the sub-rate signal, and may refer to the embodiment shown in FIG. The case where the optical communication device 2 receives the FlexO-mi signal including the sub-rate signal can be referred to the embodiment shown in FIG.
  • FIG. 5 is a schematic flowchart diagram of a method for transmitting and receiving another seed rate signal according to an embodiment of the present invention.
  • the transmitting end uses the ODSP chip as an example
  • the receiving end uses the Framer chip as an example for description
  • the signal received by the ODSP chip through the optical module is a sub-rate signal.
  • the method for transmitting and receiving the sub-rate signal includes steps 501 to 509, as described in detail below.
  • the ODSP chip maps the subrate signal to the payload area of the flexible optical network FlexO data frame.
  • the payload area is used to carry the sub-rate signal.
  • the sub-rate signal may be an OTUC-Mi sub-rate signal.
  • the signal sent by the transmitting end to the receiving end may be an OTUCn-M sub-rate signal. Since the OTUCn-M sub-rate signal is split into n-way OTUC-Mi signals during transmission, the ODSP chip pairs each.
  • the processing of the OTUC-Mi signal refer to the detailed description of steps 501 to 508 in the embodiment of the present invention.
  • the ODSP chip adds mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information.
  • the ODSP chip may add mapping information in the PAD area of the FlexO data frame, so that the mapping information may be determined in the case of determining the frame header of the FlexO data frame.
  • the position of the mapping information in the FlexO data frame is not limited in the embodiment of the present invention.
  • the specific implementation process of adding the mapping information to the FlexO data frame by the ODSP chip may be referred to as the OTUC in the sub-rate signal in the embodiment shown in FIG. - Detailed description of the mapping information of the Framer chip in the case of the -Mi sub-rate signal, which will not be described herein.
  • the ODSP chip can also convert the OTUC-Mi sub-rate signal into an OTUC signal, and the payload area of the FlexO data frame mapped by the bit synchronization, wherein the padding information is added at the position of the invalid time slot, for example, the padding information can be For the 0 or other predetermined information, the embodiment of the present invention does not limit this.
  • the ODSP chip can obtain the effective time slot distribution information of the OTUC-Mi sub-rate signal in the process of converting the OTUC-Mi sub-rate signal into the OTUC signal, so the ODSP chip can obtain configuration information, and the configuration information is used.
  • the effective time slot information herein refers to the distribution position of the effective time slot included in the OTUC-Mi sub-rate signal when converted to the OTUC signal, thereby implementing the conversion of the OTUC-Mi sub-rate signal into the OTUC signal.
  • the ODSP chip can obtain the configuration information from the management plane or the controller, or the management plane or the controller can actively send the configuration information to the ODSP chip, which is not limited in this embodiment of the present invention.
  • the ODSP chip performs FEC encoding processing on the FlexO data frame, and adds FEC encoding information in the check area of the FlexO data frame to obtain the encoded FlexO data frame.
  • the ODSP chip sends the FlexO data frame.
  • Step 503 and step 504 may refer to the detailed description of step 303 and step 304 in the embodiment shown in FIG. 3, the difference between the two is that the execution body of step 303 and step 304 is a Framer chip, and the execution of step 503 and step 504 is performed.
  • the main body is an ODSP chip, which will not be described here.
  • the Framer chip receives the FlexO data frame.
  • the Framer chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC encoding information in the check area of the FlexO data frame to obtain the decoded FlexO data frame.
  • the Framer chip extracts mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information.
  • the execution body of the steps 505 to 507 is a Framer chip, and the execution of the steps 305 to 307 is performed.
  • the main body is an ODSP chip, which will not be described here.
  • the Framer chip generates the sub-rate signal from a payload area of the FlexO data frame according to the mapping information.
  • the purpose of the Framer chip is to obtain a sub-rate signal, so after determining the mapping information, the sub-rate signal is generated from the payload area of the FlexO data frame. Extracting the sub-rate signal from the payload area of the FlexO data frame specifically determines the position of the sub-rate signal in the payload area of the FlexO data frame according to the frame header position information, and further extracts the sub-rate signal according to the effective time slot information. The effective time slot, thus producing a sub-rate signal.
  • the location of the OTUC signal in the payload area of the FlexO data frame is first determined according to the frame header position information.
  • the OTUC-Mi sub-rate signal can be obtained by extracting the Mi effective time slots; if the FlexO data frame is determined by the asynchronous mapping, the OTUC-Mi sub-rate signal is determined according to the effective time slot information of the OTUC-Mi sub-rate signal.
  • the MI time slots occupied in the FlexO data frame are determined according to the frame head position information to the start position of the OTUC-Mi sub-rate signal, and then the OTUC-Mi sub-rate signal is taken from the MI of the FlexO data frame.
  • the OTUC-Mi sub-rate signal can be obtained by directly de-mapping the gap.
  • the first occurrence of the data frame frame header of the sub-rate signal involved in the embodiment of the present invention may be the first occurrence of the bit position and the byte in the payload area.
  • the position, the 16 bytes are regarded as a whole considered position, and the like, which are not limited by the embodiment of the present invention.
  • the Framer chip after receiving the FlexO data frame, can directly determine the frame header position information and the effective time slot information according to the mapping information included in the FlexO data frame, and thus can directly determine the sub-rate signal. This eliminates the process of restoring each OTUC signal combination to OTUCn and extracting the time slot distribution information of the OTUCn signal, and adding mapping information through the FlexO data frame corresponding to each OTUC signal, thereby speeding up the transmission of the subrate signal. Processing efficiency.
  • FIG. 6 provides another method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • the transmitting end is exemplified by an ODSP chip
  • the receiving end is exemplified by a Framer chip
  • the signal received by the ODSP chip through the optical module is a FlexO-mi signal including the sub-rate signal.
  • the method for transmitting and receiving the sub-rate signal includes steps 601 to 609, as described in detail below.
  • the ODSP chip determines mapping information of a FlexO-mi signal including a subrate signal, where the mapping information includes frame header location information and valid slot information.
  • the frame header location information is used to indicate a location where the data frame header of the subrate signal first appears in a payload area of a FlexO data frame including a FlexO-mi signal, where the effective slot information is used. And indicating the valid time slot included in the sub-rate signal, or the valid time slot information is used to indicate a time slot occupied by the sub-rate signal in a payload area of the FlexO data frame.
  • the ODSP chip restores the FlexO-mi signal to the FlexO data frame according to the mapping information.
  • the sub-rate signal included in the FlexO-mi signal is an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal includes an overhead of the OTUC signal and Mi effective times of the OTUC signal. Gap.
  • the transmitting end determines, according to the mapping information, the payload area of the FlexO data frame. The location of the invalid time slot included in the OTUC signal of the OTUC-Mi sub-rate signal is included, and padding information is inserted at the location of the invalid time slot to be restored to the FlexO data frame.
  • the sending end is configured according to the Determining, by the mapping information, a location of a time slot that is not occupied by the sub-rate signal in the payload area of the FlexO data frame, and inserting padding information at a position of the time slot that is not occupied by the sub-rate signal, To restore to the FlexO data frame.
  • the padding information in the embodiment of the present invention may be 0 or other predetermined information, which is not limited by the embodiment of the present invention.
  • the ODSP chip performs FEC encoding processing on the FlexO data frame, and adds FEC encoding information in the check area of the FlexO data frame to obtain the encoded FlexO data frame.
  • the ODSP chip sends the FlexO data frame.
  • the Framer chip receives the FlexO data frame.
  • the Framer chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC encoding information in the check area of the FlexO data frame to obtain the decoded FlexO data frame.
  • the Framer chip extracts mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information.
  • the Framer chip generates the subrate signal from a payload area of the FlexO data frame according to the mapping information.
  • steps 603 to 608 reference may be made to the detailed description of the steps 503 to 508 in the embodiment shown in FIG. 5, and details are not described herein again.
  • the first occurrence of the data frame frame header of the sub-rate signal involved in the embodiment of the present invention may be the first occurrence of the bit position and the byte in the payload area.
  • the position, the 16 bytes are regarded as a whole considered position, and the like, which are not limited by the embodiment of the present invention.
  • the Framer chip after receiving the FlexO data frame, can directly determine the frame header position information and the effective time slot information according to the mapping information included in the FlexO data frame, and thus can directly determine the sub-rate signal. This eliminates the process of restoring each OTUC signal combination to OTUCn and extracting the time slot distribution information of the OTUCn signal, and adding mapping information through the FlexO data frame corresponding to each OTUC signal, speeding up the determination of the sub-rate signal. effectiveness.
  • FIG. 7a and FIG. 7b is an exemplary diagram of a method for transmitting and receiving a seed rate signal according to an embodiment of the present invention.
  • Both the optical transmission device 1 and the optical transmission device 2 are included in both of Figs. 7a and 7b, and the two devices respectively include the respective chips shown in Fig. 2.
  • FIG. 7a illustrates an example of terminating the overhead of the FlexO data frame.
  • each OTUC signal is mapped to a FlexO data frame, and the ODSP chip transmitted to the optical transmission device 1 is received through the MFI.
  • a Hard-Decision Forward Error Correction (HD-FEC) is performed on the FlexO data frame before being sent by the MFI, for example, using RS (544, 514) FEC encoding.
  • the ODSP chip extracts the included OTUCn-M sub-rate signal according to the mapping information included in the FlexO data frame, and only transmits the extracted OTUCn-M sub-rate signal through the optical module for transmission to the optical transmission device 2.
  • the soft-decision Forward Error Correction may be performed on the OTUCn-M sub-rate signal before the OTUCn-M sub-rate signal is transmitted by the optical module.
  • the ODSP of the optical transmission device 2 receives the transmitted OTUCn-M sub-rate signal through the optical module, and maps each OTUC-Mi sub-rate signal to the payload area of the FlexO data frame to obtain a FlexO data frame.
  • SD-FEC is performed after receiving the transmitted OTUCn-M sub-rate signal. Then, the FlexO data frame is sent to the Framer chip through the MFI interface, and the Framer chip extracts the included OTUCn-M sub-rate signal according to the mapping information included in the FlexO data frame.
  • the HD- FEC after receiving the FlexO data frame, the HD- FEC. It can be seen that in this case, only the OTUCn-M sub-rate signal is transmitted between the optical transmission device 1 and the optical transmission device 2, and the overhead of the FlexO data frame is not transmitted.
  • Figure 7b illustrates the overhead of not terminating the FlexO data frame as an example.
  • each OTUC signal is mapped to a FlexO data frame, and the ODSP chip transmitted to the optical transmission device 1 is received through the MFI.
  • HD-FEC is performed on the FlexO data frame before being transmitted through the MFI, for example, using RS (544, 514) FEC encoding.
  • the ODSP chip extracts the included OTUCn-M subrate signal according to the mapping information contained in the FlexO data frame, and determines the overhead of the FlexO data frame and the extracted OTUCn-M subrate signal as FlexO-m signals, and the FlexO-m
  • the signal is transmitted through the optical module for transmission to the optical transmission device 2.
  • the soft-forward forward error correction coding SD-FEC may be performed on the OTUCn-M sub-rate signal before the OTUCn-M sub-rate signal is sent by the optical module.
  • the ODSP of the optical transmission device 2 receives the transmitted FlexO-m signal through the optical module, and extracts the OTUCn-M sub-rate signal from the FlexO-m signal, and maps each OTUC-Mi sub-rate signal to the FlexO data frame.
  • the payload area gets the FlexO data frame.
  • SD-FEC is performed after receiving the transmitted OTUCn-M sub-rate signal.
  • the FlexO signal is sent to the Framer chip through the MFI interface, and the Framer chip extracts the included OTUCn-M sub-rate signal according to the mapping information contained in the FlexO data frame.
  • the HD-FEC is performed after receiving the FlexO data frame. . It can be seen that in this case, the FlexO-m signal transmitted between the optical transmission device 1 and the optical transmission device 2 includes the OTUCn-M sub-rate signal and the overhead of the FlexO data frame.
  • FIG. 8 is a schematic structural diagram of a transmitting apparatus according to an embodiment of the present application.
  • the transmitting device is used to implement the Framer chip side solution in the method embodiment shown in FIG. 3, or the ODSP chip side solution in the method embodiment shown in FIG. 5.
  • the transmitting device is a transmitting end. As shown in FIG. 8, the transmitting device 800 includes:
  • the processing unit 801 is configured to map the sub-rate signal to a payload area of the flexible optical network FlexO data frame.
  • the processing unit 801 is further configured to add mapping information, where the mapping information includes frame header location information and valid time slot information, where the frame header location information is used to indicate the subrate signal a first occurrence of a data frame frame header in a payload area of the FlexO data frame, the valid time slot information being used to indicate a valid time slot included in the sub-rate signal, or the effective time slot information Means for indicating a time slot occupied by the sub-rate signal in a payload area of the FlexO data frame;
  • the sending unit 802 is configured to send the FlexO data frame.
  • the sub-rate signal is an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal includes an overhead of the OTUC signal
  • the Mi effective time slots of the OTUC signal is an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal
  • the sub-rate signal is the OTUC signal including the OTUC-Mi sub-rate signal; the processing unit 801 maps the sub-rate signal to the payload of the flexible optical network FlexO data frame
  • the area is specifically configured to: directly map the OTUC signal including the OTUC-Mi sub-rate signal to the payload area of the FlexO data frame.
  • the effective time slot information is effective time slot distribution information of the OTUC signal including the OTUC-Mi sub-rate signal.
  • the sub-rate signal is the OTUC-Mi sub-rate signal
  • the processing unit 801 is configured to map the sub-rate signal to a payload area of the flexible optical network FlexO data frame. For: asynchronously mapping the sub-rate signal to mi time slots of a FlexO data frame, the payload area of the FlexO data frame is divided into k time slots, where k is greater than or equal to mi.
  • the effective time slot information is time slot distribution information occupied by the sub-rate signal in the k time slots divided by the payload area of the FlexO data frame.
  • the processing unit 801 is further configured to acquire configuration information, where the configuration information is used to indicate valid time slot information.
  • the sending device is configured to implement the ODSP chip side in the method embodiment shown in FIG. 6.
  • the sending device is a transmitting end, and the sending device 800 includes:
  • the processing unit 801 is configured to determine mapping information of a FlexO-mi signal including a sub-rate signal, where the mapping information includes frame header position information and valid time slot information, where the frame header position information is used to indicate the sub-rate signal a first occurrence of a data frame header in a payload area of a FlexO data frame including a FlexO-mi signal, the valid time slot information being used to indicate a valid time slot included in the sub-rate signal, or The effective time slot information is used to indicate a time slot occupied by the sub-rate signal in a payload area of the FlexO data frame;
  • the processing unit 801 is further configured to restore the FlexO-mi signal to the FlexO data frame according to the mapping information.
  • the sending unit 802 is configured to send the FlexO data frame.
  • the sub-rate signal is an OTUC-Mi sub-rate signal
  • the OTUC-Mi sub-rate signal includes an overhead of the OTUC signal and Mi effective time slots of the OTUC signal
  • the processing unit 801 is configured to: restore, according to the mapping information, the FlexO-mi signal to a FlexO data frame, where the effective time slot information is used to indicate an effective time slot included in the sub-rate signal. And determining, according to the mapping information, a location of an invalid time slot included in an OTUC signal including the OTUC-Mi sub-rate signal in the FlexO data frame payload area, and at a location of the invalid time slot Insert padding information to revert to the FlexO data frame.
  • the processing unit 801 restores the FlexO-mi signal to a FlexO data frame according to the mapping information, specifically for:
  • the valid time slot information is used to indicate a time slot occupied by the sub-rate signal in a payload area of the FlexO data frame. a location of a time slot that is not occupied by the sub-rate signal, and padding information is inserted at a location of the time slot that is not occupied by the sub-rate signal to be restored to the FlexO data frame.
  • the transmitting apparatus in the above-described embodiment shown in FIG. 8 can be implemented by the transmitting apparatus 900 shown in FIG.
  • FIG. 9 a schematic structural diagram of another transmitting apparatus is provided according to an embodiment of the present invention.
  • the transmitting apparatus 900 shown in FIG. 9 includes a processor 901 and a transceiver 902, and the transceiver 902 is configured to support a transmitting apparatus.
  • the information transmission between the 900 and the receiving device involved in the above embodiment for example, implements the function of the transmitting unit 802 in the embodiment shown in FIG.
  • the processor 901 and the transceiver 902 are communicatively coupled, such as by a bus.
  • the transmitting device 900 may further include a memory 903.
  • the memory 903 is configured to store program codes and data to be executed by the transmitting device 900, and the processor 901 is configured to execute the application code stored in the memory 903 to implement the actions of the transmitting device provided in any of the embodiments shown in FIG. 3 to FIG. .
  • the sending device may include one or more processors, and the structure of the transmitting device 900 does not constitute a limitation on the embodiments of the present application.
  • the processor 901 can be a central processing unit (CPU), a network processor (NP), a hardware chip, or any combination thereof.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory 903 may include a volatile memory such as a random access memory (RAM); the memory 903 may also include a non-volatile memory such as a read-only memory (read- Only memory, ROM), flash memory, hard disk drive (HDD) or solid-state drive (SSD); the memory 903 may also include a combination of the above types of memories.
  • RAM random access memory
  • ROM read- Only memory
  • HDD hard disk drive
  • SSD solid-state drive
  • the memory 903 may also include a combination of the above types of memories.
  • a computer storage medium for storing the computer software instructions used by the transmitting device in the embodiment shown in FIG. 9 is included in the embodiment of the present invention, and is configured to perform the foregoing design for the transmitting device. program of.
  • the storage medium includes, but is not limited to, a flash memory, a hard disk, a solid state disk.
  • a computer program product is also provided.
  • the prediction method designed for the transmitting device in the foregoing embodiment of FIG. 9 may be executed.
  • FIG. 10 is a schematic structural diagram of a receiving apparatus according to an embodiment of the present application.
  • the receiving device is used to implement the actions performed by the ODSP chip in the method embodiment shown in FIG. 3, and the actions performed by the Framer chip in the method embodiments shown in FIG. 5 and FIG. 6.
  • the receiving device is a receiving end. As shown in FIG. 10, the receiving device 1000 includes:
  • the receiving unit 1001 is configured to receive a flexible optical network FlexO data frame.
  • the processing unit 1002 is configured to extract mapping information in the FlexO data frame, where the mapping information includes frame header location information and valid time slot information, where the frame header location information is used to indicate a subrate included in the FlexO data frame.
  • a data frame frame header of the signal is first located in a payload area of the FlexO data frame, the valid time slot information is used to indicate a valid time slot included in the sub-rate signal, or the valid time The slot information is used to indicate a time slot occupied by the sub-rate signal in a payload area of the FlexO data frame;
  • the processing unit 1002 is further configured to generate the sub-rate signal or a FlexO-mi signal including the sub-rate signal from a payload area of the FlexO data frame according to the mapping information.
  • the sub-rate signal may be an OTUC-Mi sub-rate signal; the OTUC-Mi sub-rate signal is an overhead including an OTUC signal and Mi effective time slots of the OTUC signal;
  • the FlexO-mi signal includes an overhead of the FlexO data frame and an OTUC-Mi sub-rate signal; or the FlexO-mi signal includes the overhead of the FlexO data frame and the payload area of the FlexO data frame is occupied by the OTUC-Mi sub-rate signal Mi effective time slots.
  • the processing unit 1002 is configured to generate the sub-rate signal from a payload area of the FlexO data frame according to the mapping information, specifically:
  • mapping information determining, according to the mapping information, an effective time slot of a sub-rate signal included in the FlexO data frame in a payload area of the FlexO data frame, and generating the sub-rate signal.
  • the processing unit 1002 is configured to generate a FlexO-mi signal including the sub-rate signal from a payload area of the FlexO data frame according to the mapping information, specifically:
  • the processing unit 1002 is configured to generate a FlexO-mi signal including the sub-rate signal from a payload area of the FlexO data frame according to the mapping information, specifically:
  • the FlexO data frame contains the overhead of the FlexO data frame to generate the FlexO-mi signal.
  • the receiving device shown in FIG. 10 described above can be implemented by the receiving device 1100 shown in FIG.
  • FIG. 11 is a schematic structural diagram of another receiving apparatus according to an embodiment of the present invention.
  • the receiving apparatus 1100 shown in FIG. 11 includes a processor 1101 and a transceiver 1102, and the transceiver 1102 is configured to support a receiving apparatus.
  • the information transmission between the 1100 and the transmitting device involved in the above embodiment for example, implements the function of the receiving unit 1001 in the embodiment shown in FIG.
  • the processor 1101 and the transceiver 1102 are communicatively coupled, such as by a bus.
  • the receiving device 1100 may further include a memory 1103.
  • the memory 1103 is configured to store program code and data for execution by the receiving device 1100, and the processor 1101 is configured to execute the application code stored in the memory 1103 to implement the action of the receiving device provided by any of the embodiments shown in FIG. 3 to FIG. .
  • the receiving device may include one or more processors, and the structure of the receiving device 1100 does not constitute a limitation on the embodiments of the present application.
  • the processor 1101 can be a CPU, an NP, a hardware chip, or any combination thereof.
  • the above hardware chip may be an ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the memory 1103 may include volatile memory such as RAM; the memory 1103 may also include non-volatile memory such as ROM, flash memory, hard disk or solid state hard disk; the memory 1103 may also include a combination of the above types of memory.
  • a computer storage medium which can be used to store computer software instructions used by the receiving device in the embodiment shown in FIG. 10, which is configured to perform the receiving device design in the above embodiment. program of.
  • the storage medium includes, but is not limited to, a flash memory, a hard disk, a solid state disk.
  • a computer program product is also provided.
  • the prediction method designed for the receiving device in the embodiment shown in FIG. 10 can be executed.
  • the embodiment of the present invention may further provide an apparatus, including a transmitter and a receiver, where the transmitter may refer to the sending apparatus in the embodiment shown in FIG. 8 or FIG. 9, and the receiver may refer to FIG. 10 or FIG.
  • the receiving device in the illustrated embodiment may further provide an apparatus, including a transmitter and a receiver, where the transmitter may refer to the sending apparatus in the embodiment shown in FIG. 8 or FIG. 9, and the receiver may refer to FIG. 10 or FIG.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Optical Communication System (AREA)

Abstract

La présente invention se rapporte, selon divers modes de réalisation, à un procédé et à un dispositif conçus pour transmettre et recevoir un signal à débit réduit. Le procédé comprend les étapes suivantes : un côté émetteur met en correspondance un signal à débit réduit avec une zone de données utiles d'une trame de données de réseau optique flexible (FlexO); le côté émetteur ajoute des informations de mise en correspondance dans la trame de données de FlexO, les informations de mise en correspondance comprenant des informations de position d'en-tête de trame et des informations d'intervalle de temps efficaces, les informations de position d'en-tête de trame étant utilisées pour indiquer une position au niveau de laquelle un en-tête de trame de données du signal à débit réduit apparaît dans la zone de données utiles de la trame de données FlexO pour la première fois, et les informations d'intervalle de temps efficaces étant utilisées pour indiquer un intervalle de temps effectif compris dans le signal à débit réduit, ou les informations d'intervalle de temps efficaces étant utilisées pour indiquer un intervalle de temps occupé par le signal à débit réduit dans la zone de données utiles de la trame de données de FlexO; et le côté émetteur envoie la trame de données de FlexO. L'utilisation de la présente application permet d'améliorer l'efficacité de traitement de transmissions du signal à débit réduit.
PCT/CN2018/094556 2017-11-22 2018-07-04 Procédé, appareil et dispositif pour transmettre et recevoir un signal à débit réduit WO2019100725A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201711175074.9 2017-11-22
CN201711175074.9A CN109818705B (zh) 2017-11-22 2017-11-22 传送、接收子速率信号方法及装置、设备

Publications (1)

Publication Number Publication Date
WO2019100725A1 true WO2019100725A1 (fr) 2019-05-31

Family

ID=66601308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/094556 WO2019100725A1 (fr) 2017-11-22 2018-07-04 Procédé, appareil et dispositif pour transmettre et recevoir un signal à débit réduit

Country Status (2)

Country Link
CN (1) CN109818705B (fr)
WO (1) WO2019100725A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113078980A (zh) * 2019-12-18 2021-07-06 华为技术有限公司 一种数据传输的方法以及装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101472201A (zh) * 2007-12-26 2009-07-01 希尔纳公司 允许多级光传输的100g光传送的帧交错系统和方法
US20170005901A1 (en) * 2015-06-30 2017-01-05 Ciena Corporation Flexible ethernet operations, administration, and maintenance systems and methods
CN107078822A (zh) * 2014-11-28 2017-08-18 日本电信电话株式会社 光传输系统以及资源最佳化方法
CN107210832A (zh) * 2014-11-28 2017-09-26 日本电信电话株式会社 成帧器和成帧方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3753866B2 (ja) * 1998-07-01 2006-03-08 株式会社日立製作所 自己救済型光ネットワーク
CN100596043C (zh) * 2004-08-26 2010-03-24 华为技术有限公司 实现低速信号在光传输网络中透明传送的方法和装置
CN102546374A (zh) * 2010-12-27 2012-07-04 中兴通讯股份有限公司 自动发现ODUflex带宽无损调整能力的方法及系统
CN102281477B (zh) * 2011-08-18 2018-02-16 中兴通讯股份有限公司 一种实现otn业务映射及解映射的方法和装置
EP2999170B1 (fr) * 2013-06-24 2018-08-15 Huawei Technologies Co., Ltd. Procédé d'augmentation et procédé de diminution pour une bande passante de canal optique variable et dispositif

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101472201A (zh) * 2007-12-26 2009-07-01 希尔纳公司 允许多级光传输的100g光传送的帧交错系统和方法
CN107078822A (zh) * 2014-11-28 2017-08-18 日本电信电话株式会社 光传输系统以及资源最佳化方法
CN107210832A (zh) * 2014-11-28 2017-09-26 日本电信电话株式会社 成帧器和成帧方法
US20170005901A1 (en) * 2015-06-30 2017-01-05 Ciena Corporation Flexible ethernet operations, administration, and maintenance systems and methods

Also Published As

Publication number Publication date
CN109818705A (zh) 2019-05-28
CN109818705B (zh) 2020-05-19

Similar Documents

Publication Publication Date Title
US11252098B2 (en) Data transmission method, transmitter, and receiver
CN109600188B (zh) 数据传输方法、传输设备和传输系统
WO2016197894A1 (fr) Procédé de traitement de données, dispositif de communication et système de communication
WO2021180007A1 (fr) Procédé, appareil et système de support de service
WO2019090696A1 (fr) Procédé et appareil pour le transport d'un signal d'unité de transport optique
WO2017121158A1 (fr) Procédé et appareil de traitement de signal ethernet élastique
CN111884900B (zh) 发送数据的方法和转发设备
WO2019223000A1 (fr) Procédé et dispositif de transmission de données
US11245470B2 (en) Method, device, and system for transmitting data
WO2017063457A1 (fr) Procédé et appareil d'adaptation de débit, et support de stockage pour ordinateur
WO2012155710A1 (fr) Procédé et dispositif de mise en œuvre de mappage et de démappage de service otn
WO2020147661A1 (fr) Procédé et appareil d'émission de signal, dispositif réseau et support d'informations lisible par ordinateur
US11412508B2 (en) Data transmission method and device
US11695508B2 (en) Data processing method and related apparatus
WO2019170064A1 (fr) Procédé, appareil et système de traitement de données ethernet dans un réseau optique
WO2019100725A1 (fr) Procédé, appareil et dispositif pour transmettre et recevoir un signal à débit réduit
WO2020253403A1 (fr) Procédé et appareil de surveillance de surdébit, et support de stockage lisible par ordinateur
WO2021121352A1 (fr) Procédé et appareil de transmission de données
CN112118073B (zh) 一种数据处理方法、光传输设备及数字处理芯片
WO2020108329A1 (fr) Procédé et dispositif de traitement de données de service
WO2021218721A1 (fr) Procédé et appareil de traitement de service
WO2017049546A1 (fr) Procédé d'émission et de réception de signal de réseau de transport optique (otn), dispositif otn, et système
WO2024051586A1 (fr) Procédé de traitement de trame de données dans un réseau de transport optique, appareil et système
WO2021185196A1 (fr) Procédé de transmission de trame de données, et dispositif associé
WO2024046465A1 (fr) Procédé et appareil de transmission de données

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18880097

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 18880097

Country of ref document: EP

Kind code of ref document: A1