CN109818705A - It transmits, receive sub- rate signal method and device, equipment - Google Patents

Abstract

The embodiment of the invention discloses a kind of transmission, sub- rate signal method and device, equipment are received, wherein method includes: the payload section that sub- rate signal is mapped to flexible optical-fiber network FlexO data frame by transmitting terminal；Transmitting terminal adds map information in FlexO data frame, map information includes frame header position information and effective gap information, frame header position information is used to indicate the position that the data frame frame head of sub- rate signal occurs for the first time in the payload section of FlexO data frame, effective gap information is used to indicate effective time slot that sub- rate signal includes, alternatively, effectively gap information is used to indicate the time slot that quilt rate signal occupies in the payload section of FlexO data frame；Transmitting terminal sends FlexO data frame.Using the application, the transmission treatment effeciency of sub- rate signal can be improved.

Description

Method, apparatus and equipment for transmitting and receiving sub-rate signal

technical field

The present invention relates to the technical field of optical communication, and in particular, to a method, apparatus and device for transmitting and receiving sub-rate signals.

Background technique

Optical Transport Network (OTN, Optical Transport Network) technology is a new optical transport technology that can realize flexible scheduling and management of large-capacity services, and has now become the mainstream technology of backbone transport networks. Two optical communication devices can be connected through OTN for communication, and for the internal chip of any optical communication device, signal inter-chip communication can be realized through a module framer interface (Module Framer Interface, MFI). For example, the signal intercommunication between a Framer chip and an optical digital signal processor (optical digital signal processor, ODSP) chip. The existing MFI has a strong correlation with the carried services, and can only support integer multiples of service signals, for example, a 100G optical transport unit (Optical Transport Unit, OTU) for description, that is, OTUC. The existing MFI only supports 100G OTU4, OTUCn (OpticalTransport Unit Cn,

n*100G optical transmission unit) and other signals, there are great limitations. For non-integer multiple OTUCn-M sub-rate signals (such as 50G, 125G signals), when the transmitting end transmits the OTUCn-M sub-rate signal through the MFI interface, it still transmits the OTUCn signal including the OTUCn-M sub-rate signal, When the receiving end receives the OTUCn signal, it needs to extract the OTUCn-M sub-rate signal. Since each OTUC signal in the OTUCn signal including the OTUCn-M sub-rate signal needs to be formed into a flexible optical transport network (Flexible OTN, FlexO) data frame when transmitting the OTUCn-M sub-rate signal, the receiving end will One OTUC signal is extracted from each FlexO data frame received, and then multiple OTUC signals are combined to restore the OTUCn signal, and then the time slot distribution information of OTUCn is extracted and analyzed, and OTUCn is converted into OTUCn-M according to the time slot distribution information. rate signal. This processing process is complicated and the transmission processing efficiency is low.

How to improve the transmission and processing efficiency of sub-rate signals through the MFI interface is a problem worth considering.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method, apparatus, and device for transmitting and receiving sub-rate signals, so as to improve the transmission and processing efficiency of sub-rate signals.

In a first aspect, an embodiment of the present invention provides a method for transmitting a sub-rate signal, including:

The sender maps the sub-rate signal to the payload area of the FlexO data frame of the flexible optical network; adds mapping information to the FlexO data frame, the mapping information includes frame header position information and valid time slot information, and the frame header position information is used to indicate the sub-rate The position where the frame header of the data frame of the signal appears for the first time in the payload area of the FlexO data frame; the valid time slot information is used to indicate the valid time slot contained in the sub-rate signal, or the valid time slot information is used to indicate the FlexO data frame The time slot occupied by the sub-rate signal in the payload area of the FlexO data frame is sent.

Optionally, the sub-rate signal is an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid time slots of the OTUC signal.

In the first aspect, the sending end may be a Framer chip, an ODSP chip, or the like. After the sending end adds mapping information including frame header position information and valid time slot information to the FlexO data frame, the receiving end can directly determine the sub-rate signal according to the mapping information, which speeds up the transmission and processing efficiency of the sub-rate signal.

In an optional implementation manner, the sub-rate signal is an OTUC signal including an OTUC-Mi sub-rate signal; when the sending end performs mapping of the sub-rate signal to the payload area of the flexible optical network FlexO data frame, specifically: The OTUC signal including the OTUC-Mi sub-rate signal is directly bit-synchronously mapped to the payload area of the FlexO data frame.

Optionally, the valid time slot information is the valid 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 valid time slots, it can be known whether each time slot in the 20 time slots is a valid time slot.

In an optional implementation manner, the sub-rate signal is an OTUC-Mi sub-rate signal, and when the sending end performs mapping of the sub-rate signal to the payload area of the FlexO data frame of the flexible optical network, specifically, the sub-rate signal is asynchronously executed: Mapped to the mi time slots of the 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.

Optionally, the valid time slot information is the 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.

In an optional implementation manner, before adding the mapping information to the FlexO data frame, the sending end also performs acquisition of configuration information, where the configuration information is used to indicate valid time slot information. The effective timeslot information here refers to the distribution position of the effective timeslots included in the OTUC-Mi sub-rate signal when it is converted into an OTUC signal, thereby realizing the conversion of the OTUC-Mi sub-rate signal into an OTUC signal. Optionally, the sending end is an ODSP chip.

Optionally, the sending end may acquire the configuration information from the management plane or the controller, or the management plane or the controller may actively send the configuration information to the sending end, which is not limited in this embodiment of the present invention.

In a second aspect, another method for transmitting a sub-rate signal is provided for an embodiment of the present invention, including:

The sending end determines the mapping information of the FlexO-mi signal including the sub-rate signal. The mapping information includes frame header position information and valid time slot information. The frame header position information is used to indicate that the data frame header of the sub-rate signal includes the FlexO-mi signal. The position of the first occurrence in the payload area of the FlexO data frame; the valid time slot information is used to indicate the valid time slot contained in the sub-rate signal, or the valid time slot information is used to indicate the quilt in the payload area of the FlexO data frame The time slot occupied by the rate signal; the sender restores the FlexO-mi signal to a FlexO data frame according to the mapping information; the sender sends a FlexO data frame.

The difference from the first aspect is that the second aspect is the processing performed for the FlexO-mi signal including the sub-rate signal. In the second aspect, the sending end may be an ODSP chip or the like. After the sending end adds mapping information including frame header position information and valid time slot information to the FlexO data frame, the receiving end can directly determine the sub-rate signal according to the mapping information, which speeds up the transmission and processing efficiency of the sub-rate signal.

In an optional implementation manner, the sub-rate signal is an OTUC-Mi sub-rate signal, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid time slots of the OTUC signal; To restore the FlexO-mi signal to a FlexO data frame is to execute:

In the case where the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, the transmitting end determines 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 according to the mapping information position, and insert padding information at the position of the invalid time slot to restore the FlexO data frame.

In an optional implementation manner, the sending end is performing, according to the mapping information, to restore the FlexO-mi signal to a FlexO data frame, specifically:

In the case where the valid time slot information is used to indicate the time slots occupied by the sub-rate signal in the payload area of the FlexO data frame, the transmitting end determines, according to the mapping information, the time slots not occupied by the sub-rate signal in the payload area of the FlexO data frame position, and insert padding information at the position of the time slot not occupied by the sub-rate signal to restore it to a FlexO data frame.

In a third aspect, an embodiment of the present invention provides a method for receiving a sub-rate signal, including:

The receiving end receives the FlexO data frame of the flexible optical network; extracts the mapping information from the FlexO data frame, the mapping information includes frame header position information and valid 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 The position where the frame header first appears in the payload area of the FlexO data frame, the valid time slot information is used to indicate the valid time slot contained in the sub-rate signal, or the valid time slot information is used to indicate the payload area of the FlexO data frame The time slot occupied by the sub-rate signal; the sub-rate signal or the FlexO-mi signal including the sub-rate signal is generated from the payload area of the FlexO data frame according to the mapping information.

Optionally, the sub-rate signal is an OTUC-Mi sub-rate signal; the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid time slots of the OTUC signal; the FlexO-mi signal includes the overhead of the FlexO data frame and the OTUC-mi signal. Mi sub-rate signal; or, the FlexO-mi signal includes the overhead of the FlexO data frame and the mi valid time slots occupied by the OTUC-Mi sub-rate signal in the payload area of the FlexO data frame.

In the third aspect, the receiving end may be a Framer chip, an ODSP chip, or the like. After the sending end adds mapping information including frame header position information and valid time slot information to the FlexO data frame, the receiving end can directly determine the sub-rate signal according to the mapping information, which speeds up the transmission and processing efficiency of the sub-rate signal.

In an optional implementation manner, when the receiving end performs the generation of the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, specifically: according to the mapping information, determine the FlexO data frame in the payload area of the FlexO data frame Contains the valid time slots of the sub-rate signal and generates the sub-rate signal.

In an optional implementation manner, when the receiving end generates the FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, it specifically executes: according to the mapping information, in the FlexO data frame The sub-rate signal included in the FlexO data frame is determined in the payload area, and the FlexO-mi signal is generated according to the determined sub-rate signal and the overhead of the FlexO data frame included in the FlexO data frame.

In an optional implementation manner, when the receiving end generates the FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, it specifically executes: 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.

In a fourth aspect, an embodiment of the present invention provides a sending apparatus, the sending apparatus includes: a processing unit, configured to map a sub-rate signal to a payload area of a FlexO data frame of a flexible optical network; Add mapping information to the data frame. The mapping information includes frame header position information and valid time slot information. The frame header position information is used to indicate the position where the data frame header of the sub-rate signal appears for the first time in the payload area of the FlexO data frame. , the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, or the valid 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 sending unit is used to send the FlexO data frame.

Optionally, the sending apparatus may also implement part or all of the optional implementation manners performed by the sending end in the first aspect.

In a fifth aspect, an embodiment of the present invention provides another sending apparatus, the sending apparatus includes: a processing unit 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, the frame header position information is used to indicate the position where the frame header of the data frame of the sub-rate signal appears for the first time in the payload area of the FlexO data frame including the FlexO-mi signal, and the valid time slot information is used to indicate the sub-rate signal. The included valid time slot, or the valid 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 also used to restore the FlexO-mi signal to FlexO data according to the mapping information Frame; sending unit, used to send FlexO data frames.

Optionally, the sending apparatus may also implement part or all of the optional implementation manners performed by the sending end of the second aspect.

In a sixth aspect, a sending device is provided. The sending device can be the sending end in the above method design, or a chip set in the communication device. The sending device includes: a memory transceiver, and a processor. Optionally, it also includes a memory for storing computer executable program codes; the processor is coupled with the memory and the transceiver. The program code stored in the memory includes instructions, and when the processor executes the instructions, the sending apparatus is made to execute the method performed by the sending apparatus in any possible design of the fourth aspect or the fifth aspect.

In a seventh aspect, an embodiment of the present invention provides a receiving device, including: a receiving unit, configured to receive a flexible optical network FlexO data frame; and a processing unit, configured to extract mapping information from the FlexO data frame, where the mapping information includes a frame header position information and valid time slot information, the frame header position information is used to indicate the position where the data frame header of the sub-rate signal included in the FlexO data frame appears for the first time in the payload area of the FlexO data frame, and the valid time slot information is used to indicate The valid time slot contained in the sub-rate signal, or, the valid 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 zone generates a sub-rate signal or a FlexO-mi signal including a sub-rate signal.

Optionally, the receiving apparatus may also implement part or all of the optional implementation manners performed by the receiving end of the third aspect.

In an eighth aspect, a receiving apparatus is provided. The receiving device may be the transmitting end in the above method design, or may be a chip provided in the communication device. The receiving device includes: a memory transceiver, and a processor. Optionally, it also includes a memory for storing computer executable program codes; the processor is coupled with the memory and the transceiver. The program code stored in the memory includes instructions, and when the processor executes the instructions, the receiving apparatus is caused to execute the method performed by the receiving apparatus in any possible design of the sixth aspect.

In a ninth aspect, a computer program product is provided, the computer program product includes: computer program code, when the computer program code is run on a computer, the computer program code enables the computer to execute the above-mentioned first aspect or the third aspect and any possible implementation manners thereof Methods.

A tenth aspect provides a computer-readable medium, where the computer-readable medium stores program codes, when the computer program codes are executed on a computer, the computer is made to execute the above-mentioned first aspect or the third aspect and any possible implementations thereof method in .

In an eleventh aspect, a device is provided, including a transmitter and a receiver, where the transmitter can perform the method performed by the transmitting apparatus in any possible design of the fourth aspect or the fifth aspect; the receiver can perform the above-mentioned first A method performed by a receiving apparatus in any one possible design of the six aspects.

Description of drawings

In order to more clearly describe the technical solutions in the embodiments of the present invention or the background technology, the accompanying drawings required in the embodiments or the background technology of the present invention will be described below.

FIG. 1 provides a schematic diagram of a possible communication system architecture according to an embodiment of the present invention;

FIG. 2 provides a schematic diagram of communication between chips according to an embodiment of the present invention;

3 is a schematic flowchart of a method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention;

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 provided by an embodiment of the present invention;

5 is a schematic flowchart of another method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention;

6 is a schematic flowchart of another method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention;

7a is an exemplary diagram of a method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention;

FIG. 7b is an exemplary diagram that provides another method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention;

8 is a schematic structural diagram of a sending apparatus provided by an embodiment of the present invention;

9 is a schematic structural diagram of another sending apparatus provided by 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 provided by an embodiment of the present invention.

Detailed ways

The embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

The descriptions of each signal and each chip involved in the embodiment of the present invention are as follows:

OTUC signal: It 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 including M time slots of an optical transmission unit of n*100G, that is, a sub-rate signal of an OTUCn signal, or an optical transmission signal that is not an integer multiple of 100G.

OTUC-Mi sub-rate signal: After the OTUCn signal is distributed into n channels of OTUC signals, the OTUC-Mi signal includes the overhead of the i-th channel of OTUC signal and the included Mi valid time slots. For example, the Mi corresponding to the second OTUC signal is M2. The value of Mi can be M1, M2, ..., Mn, where M1+M2+...+Mn=M.

FlexO data frame: For the flexible optical transport network data frame that can be transmitted through the MFI interface, an OTUC signal can form a FlexO data frame, and the FlexO data frame can also be called a FlexO signal. Referring to Figure 4a, the FlexO data frame includes an alignment marker (Alignment Marker, AM) area, a padding (PAD) area, an overhead (Overhead, OH) area, a payload area and a check area, wherein the AM area, PAD area, OH area The data in the area is the overhead of the FlexO data frame.

FlexO-mi signal: contains the overhead of the FlexO data frame and the mi valid time slots occupied by the OTUC-Mi sub-rate signal in the payload area of the 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. Among them, i has the same meaning as i in the OTUC-Mi subrate signal. The OTUC-Mi sub-rate signal includes the overhead of the i-th OTUC signal and the included Mi valid time slots. Therefore, the FlexO-mi signal is also obtained indirectly from the i-th OTUC signal.

FIG. 1 is a schematic diagram of a possible communication system architecture provided by an embodiment of the present invention. As shown in FIG. 1 , two optical transmission devices are included, namely, an optical transmission device 1 and an optical transmission device 2, wherein the optical transmission device 1 and the optical transmission device 2 realize 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 hostboard chip, an ODSP chip and an optical module. Here, the ODSP chip can also be a PMA (PhysicalMedium Attachment, physical medium adaptation) 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 . For example, the host board chip in the optical transmission device 1 can send the service signal to the optical transmission device 2 through the ODSP chip, the optical module and the optical transmission network, and the optical transmission device 2 receives the service signal through the optical transmission network, the optical module and the ODSP chip, And 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 may be a Framer chip, the ODSP is located on the optical module side, and the host board chip and the ODSP chip communicate with each other through an MFI interface. It should be noted that the present invention does not impose any restrictions on the names of chips passing through the MFI interface, and ODSP and Framer are just examples.

Optionally, in this embodiment of the present invention, the host board chip and the ODSP chip may be disposed on one single board, or may be disposed on different single boards, which are not limited in this embodiment of the present invention. The two can establish a communication connection through the MFI interface.

The host board chip transmits the OTUCn-M sub-rate signal as an example, taking the MFI interface as FOIC1.4 as an example. It should be noted here that FOIC1.4 can be represented by FOICt.k, where Ct represents the rate (C corresponds to 100, representing 100Gbps, and Ct represents t 100Gbps), and k represents the number of logical channels supported by the optical module or interface. For example: FOIC2.4 means that the supported rate is 200Gbps, there are 4 logical ports, and the corresponding optical module also has 4 ingress ports. The FOIC1.4 used here means that the supported rate is 100Gbps, and there are 4 logical ports. The corresponding The optical module also has 4 ingress ports.

First, the host board chip fills the OTUCn-M sub-rate signal with 0 in the invalid time slot according to the distribution of the valid time slots of the OTUCn-M sub-rate signal to obtain the OTUCn signal. The FOIC1.4 interface is used to carry OTUCn signals. One OTUC signal in the OTUCn signals forms a FlexO data frame, which is then split into 4 physical channels. The specific processing includes the following:

1) The OTUCn signal is distributed as n channels of 100G OTUC signals;

2) Each OTUC signal bit is synchronously mapped to the FlexO data frame payload area;

3) Forward Error Correction (FEC) coding is performed on the FlexO data frame to form a FlexO data frame (128 rows and 5440 bit columns); specifically, FEC coding information will be added to the FEC area of the FlexO frame.

4) Distribute FlexO data frames to 4 physical channels, for example, distribute in 10-bit basic units.

After receiving each FlexO data frame on the ODSP chip side, it first obtains an OTUC signal from each FlexO data frame, then combines multiple OTUC signals to restore the OTUCn signal, and finally extracts and analyzes the time slot distribution information of the OTUCn signal. This converts the OTUCn signal to the OTUCn-M subrate signal.

The processing procedure for determining the OTUCn-M sub-rate signal in the above manner is complicated, which reduces the transmission processing efficiency. In the embodiment of the present application, for one sub-rate signal OTUCn-Mi among the n sub-rate signals included in OTUCn-M, the host board chip maps the OTUCn-Mi sub-rate signal to the data frame of the flexible optical network FlexO. Payload area; the hostboard chip adds mapping information to the FlexO data frame. The mapping information includes frame header position information and valid time slot information. The frame header position information is used to indicate the data frame header of the OTUCn-Mi sub-rate signal in the FlexO data frame. The position of the first occurrence in the payload area of - The time slot occupied by the Mi sub-rate signal; the host board chip sends FlexO data frames. In this way, after the ODSP chip receives the FlexO data frame, it can directly determine the frame header position information and the effective time slot information according to the mapping information contained in the FlexO data frame, and then directly determine the OTUCn-Mi sub-rate signal. This saves the process of restoring the combination of OTUC signals of each channel to OTUCn and extracting and analyzing the time slot distribution information of the OTUCn signals. By adding mapping information to the FlexO data frame corresponding to the OTUC signals of each channel, the OTUCn-Mi sub-rate is accelerated. Signal transmission processing efficiency.

The above is a brief description of the host board chip as the sender and the ODSP chip as the receiver. This application also includes a technical solution in which the ODSP chip is the sender and the host board chip is the receiver, which can also improve the transmission and processing efficiency of OTUCn-M sub-rate signals. .

It should be noted that, the transmitting end and the receiving end involved in the embodiments of the present invention are not limited to the host board chip and the ODSP chip. It should be noted that the sub-rate signal involved in the embodiments of the present application refers to a part of the source signal, which is specifically composed of the overhead of the source signal and part of the time slot. For example, the OTUCn signal is a source signal, and the OTUCn-M signal is a part of the OTUCn signal, that is, the OTUCn-M signal is a sub-rate signal. This embodiment of the present invention does not limit the source signal, which may be an OTUCn signal, an n-channel FlexE signal, or the like. The sub-rate signal in this embodiment of the present invention is not limited to the OTUCn-M and OTUC-Mi sub-rate signals, and may also be a FlexE sub-rate signal, for example, FlexE-m, which represents the overhead of n-channel FlexE signals and the It consists of m valid time slots.

FIG. 3 is a schematic flowchart of a method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention. In this embodiment, the framer chip is used as an example for the sending end, and the ODSP chip is used as an example for the receiving end for description. As shown in FIG. 3 , the method for transmitting and receiving the rate signal includes steps 301 to 308 , please refer to the following specific introduction.

301. The Framer chip maps the sub-rate signal to the payload area of the FlexO data frame of the flexible optical network.

Among them, the payload area is used to carry sub-rate signals. In this embodiment of the present invention, the sub-rate signal may be an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal. It should be noted here that the signal sent by the transmitter to the receiver can be an OTUCn-M sub-rate signal. Since the OTUCn-M sub-rate signal is split into n channels of OTUC-Mi signals during the transmission process, the Framer chip will For the processing of one OTUC-Mi signal, reference may be made to the detailed description of step 301 to step 308 in the embodiment of the present invention. Alternatively, the signal sent by the transmitter to the receiver may be an OTUCn signal including an OTUCn-M sub-rate signal. Similarly, since the OTUCn signal will be split into n channels of OTUC signals during the transmission process, for each channel of OTUC by the Framer chip For signal processing, reference may be made to the detailed description of steps 301 to 308 in this embodiment of the present invention.

302. The Framer chip adds mapping information to the FlexO data frame, where the mapping information includes frame header position information and valid time slot information.

For the OTUCn signal being sent, one OTUC signal corresponds to one FlexO data frame. By adding mapping information to the FlexO data frame, the process of restoring the combination of each OTUC signal to OTUCn and extracting and analyzing the time slot distribution information of the OTUCn signal is omitted, which speeds up the transmission and processing efficiency of the OTUC-Mi sub-rate signal, and further The transmission processing efficiency of the OTUCn-M sub-rate signal is improved.

Optionally, the Framer chip may add mapping information to the PAD area of the FlexO data frame, so that the mapping information can be determined when the frame header of the FlexO data frame is determined. This embodiment of the present invention does not limit the location of the mapping information in the FlexO data frame.

Next, the added mapping information will be described in detail with reference to FIG. 4a and FIG. 4b.

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 (Alignment Marker, AM) area, a padding (PAD) area, an overhead (Overhead, OH) area, a payload area and a check area. As shown in Figure 4a, the payload area is an area other than the AM area, the PAD area, the OH area and the check area. The payload area of a single data frame of FlexO contains 5130 16-byte blocks.

In the first optional solution, when the sub-rate signal is an OTUC signal including an OTUC-Mi sub-rate signal, since the OTUC signal also has corresponding data frames, each OTUC signal contains 20 data frames. Slots (TS#1, TS#2, . When the data frame of the OTUC signal is placed in the payload area of the FlexO data frame, the frame header position information and the valid time slot information are determined.

The frame header position information is specifically represented by determining the position where the data frame header of the OTUC signal appears for the first time in the payload area. As shown in Figure 4a, the position of the data frame header is the position of the FA&OH, where FA (FrameAlignment) represents the frame header of the data frame of the OTUC signal, and OH represents the overhead of the data frame of the OTUC signal. In this case, the valid time slot information is the valid time slot distribution information of the OTUC signal, for example, the positions of the valid time slots of the OTUC signal are TS#1, TS#3, TS#5, TS#7, TS#9 ,TS#10,TS#11,TS#20, if the valid time slot information is represented by 20bit, it can be determined whether the time slot from TS#1 to TS#20 is valid according to the value of each bit from left to right . For example, if the bit value is 1, it is valid, and the bit value is 0, which is invalid; then the valid time slot information of the OTUC signal in the above example is 10101010111000000001. For the receiving end, the data frame header of the OTUC signal can be determined first according to the frame header position information, and whether every 20*16-byte blocks immediately after the data frame header can be determined according to the valid time slot information is valid. And the OTUC-Mi sub-rate signal can be determined according to the valid time slot information and the frame header of the data frame, which speeds up the transmission processing efficiency of extracting the sub-rate signal according to the OTUC signal.

In the second optional solution, in the case that the sub-rate signal is an OTUC-Mi sub-rate signal, in the case of placing the data frame of the OTUC-Mi sub-rate signal in the payload area of the FlexO data frame, determine Frame header position information and valid time slot information. The structure of the data frame of the OTUC-Mi sub-rate signal can refer to the upper part in Fig. 4b. The OTUC-Mi sub-rate signal includes the overhead of the OTUC signal (FA&OH in Fig. 4b) and the Mi of the OTUC signal. Valid time slots, that is to say the OTUC-Mi sub-rate signal does not include invalid time slots.

The frame header position information is specifically represented by determining the position where the frame header of the data frame of the OTUC-Mi sub-rate signal appears for the first time in the payload area. The valid time slot information is the number of valid time slots included in the OTUC-Mi sub-rate signal, namely Mi. For the receiving end, the data frame header of the OTUC-Mi sub-rate signal can be determined first according to the frame header position information, and then the Mi *16-byte blocks immediately after the data frame header can be obtained, and then the OTUC can be determined. -Mi sub-rate signals, thus speeding up the transmission processing efficiency of sub-rate signals.

In the above two optional solutions, the sub-rate signal is mapped to the payload area of the FlexO data frame by means of bit synchronization mapping. Next, the mapping of the sub-rate signal to the payload area of the FlexO data frame by asynchronous mapping is introduced, and the sub-rate signal is an OTUC-Mi sub-rate signal as an example for description.

First, the 5130 16-byte blocks in the payload area of the FlexO data frame are divided into k time slots. Secondly, map the OTUC-Mi sub-rate signal to the FlexO data frame payload area, and record the number of time slots in the FlexO data frame payload area occupied by the OTUC-Mi sub-rate signal, which is represented by mi here, where k is greater than or equal to mi. In this scheme, the frame header position information and the valid time slot information are determined when 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 the position where the frame header of the data frame of the OTUC-Mi sub-rate signal appears for the first time 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. In a possible solution, the valid 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 can first determine the mi time slots occupied by 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 header position information. Data frame header, and then the OTUC-Mi sub-rate signal is directly demapped from the mi time slots, thereby speeding up the transmission processing efficiency of the sub-rate signal.

In an optional solution, since the number of the minimum valid time slots of the OTUC-Mi sub-rate signal is 1 and the number of the maximum valid time slots is 20, if the size of the time slots included in a group of FlexO data frames is set It should be 20*16 byte blocks. In the embodiment of the present invention, the number of time slots divided into 20*16 byte blocks in the FlexO data frame is not limited. For example, it is divided into 20 time slots and 40 time slots. slot, 80 slots, etc. Taking 20 time slots as an example, each time slot also includes a 16-byte block, so that the rate of a single time slot of the FlexO data frame is the rate of a single time slot in the OTUC signal or the OTUC-Mi sub-rate signal. As shown in Figure 4b, the OTUC-Mi sub-rate signal is mapped to the payload area of the FlexO data frame. Among the 20 time slots of the FlexO data frame, the first Mi time slots are replaced by the effective time slots of the OTUC-Mi sub-rate 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. In other words, in this case, the valid time slot information can be indicated by the number mi of occupied time slots 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.

Optionally, the position where the data frame header of the OTUC signal involved in the embodiment of the present invention appears for the first time in the payload area, or the data frame header of other sub-rate signals appears for the first time in the payload area. The position of the 16 bytes may refer to a bit position, a byte position, a position where 16 bytes are considered as a whole, etc. that appear for the first time in the payload area, etc., which is not limited in this embodiment of the present invention.

303. 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 to the inspection area of the FlexO data frame to obtain an encoded FlexO data frame.

Among them, the Framer chip performs FEC encoding processing on the FlexO data frame that does not add encoding information in the check area (or expressed as FEC area), and adds the FEC encoding information obtained by the encoding process to the check area to obtain the encoded FlexO data frame Data Frame.

304, the Framer chip sends the FlexO data frame.

Wherein, in the case of performing step 303, the FlexO data frame sent here is the FlexO data frame obtained after encoding. In the case where step 303 is not performed, the FlexO data frame sent here is the FlexO data frame obtained after adding the mapping information.

In an optional solution, the Framer chip divides the FlexO data frame into FOIC1.x signals based on the MFI interface and sends them, where x is a positive integer.

305. The ODSP chip receives the FlexO data frame.

Correspondingly, the ODSP chip receives the FlexO data frame. In an optional solution, after the Framer chip divides the FlexO data frame into FOIC1.x signals for transmission, the ODSP signal identifies FOIC1.x and reassembles them into FlexO data frames.

306 , the ODSP chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC encoding information in the inspection area of the FlexO data frame to obtain a decoded FlexO data frame.

Wherein, when the Framer chip performs step 303, 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 coding information in the inspection area of the FlexO data frame, to get the decoded FlexO data frame.

307. The ODSP chip extracts mapping information from the FlexO data frame, where the mapping information includes frame header position information and valid time slot information.

Wherein, in the case where step 306 needs to be performed, the FlexO data frame here is the FlexO data frame obtained after decoding. In the case where step 306 does not need to be performed, the FlexO data frame here is the FlexO data frame received through step 305 .

The ODSP chip can extract frame header position information and valid time slot information from the FlexO data frame. Optionally, when the mapping information is added to the padding area of the FlexO data frame, the mapping information may be extracted from the padding area.

308. The ODSP chip generates the sub-rate signal or the FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information.

In the first optional solution, after step 307 is executed, the ODSP chip can terminate the overhead of the FlexO data frame, that is, the data in the AM area, PAD area, and OH area in the FlexO data frame are not considered, and only the net data of the FlexO data frame is taken into account. The sub-rate signal is extracted from the charge area. Extracting the sub-rate signal from the payload area of the FlexO data frame specifically includes: first determining 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 extracting the sub-rate signal according to the valid time slot information. , the subrate signal is generated.

For example, in the case where the FlexO data frame is determined according to the OTUC signal including the OTUC-Mi sub-rate signal, first determine the position of the OTUC signal in the payload area of the FlexO data frame according to the frame header position information, and then determine the position of the OTUC signal according to the valid time slot. Only the effective time slot is extracted from the distribution information of the OTUC signal, and the OTUC-Mi sub-rate signal is generated according to the data frame header of the OTUC signal and the extracted effective time slot.

For another example, in the case where the FlexO data frame is determined according to the OTUC-Mi sub-rate signal, if the FlexO data frame is determined by asynchronous mapping, first determine the OTUC-Mi in the FlexO according to the valid time slot information of the sub-rate signal OTUC-Mi. The mi time slots occupied in the data frame are determined to the starting position of the OTUC-Mi signal according to the frame header position information, and then the OTUC-Mi sub-rate signal is directly occupied from the mi time slots occupied in the FlexO data frame. After demapping, the OTUC-Mi sub-rate signal can be obtained.

In the second optional solution, after step 307 is executed, the ODSP chip may not terminate the overhead of the FlexO data frame, that is, the data in the AM area, the PAD area, and the OH area in the FlexO data frame and the payload of the FlexO data frame are reserved. sub-rate signal in the zone. Specifically, first determine the position of the sub-rate signal in the payload area of the FlexO data frame according to the frame header position information, and then determine the mi timeslots of the FlexO data frame occupied by the sub-rate signal according to the valid timeslot information, and finally determine the position of the FlexO data frame in the FlexO data frame. Time slots not occupied by sub-rate signals in the frame, and the time slots not occupied by sub-rate signals are directly deleted from the FlexO data frame. This produces the FlexO-mi signal. That is to say, a FlexO-mi signal can be generated according to the data in the AM area, the PAD area, and the OH area in the FlexO data frame and the mi time slots of the FlexO data frame occupied by the sub-rate signal.

Further optionally, the ODSP chip sends the sub-rate signal or the FlexO-mi signal including the sub-rate signal through an optical module.

It should be noted that the scheme of mapping a sub-rate signal to a FlexO data frame through asynchronous mapping can be applied to any sub-rate signal, that is, any sub-rate signal can be mapped to the time slot divided by the FlexO signal, and then in the ODSP After the chip receives the FlexO data frame, it normalizes any sub-rate signal to the FlexO-mi signal, and transmits the FlexO-mi signal through the optical module. In this way, any sub-rate signal can be transmitted through the MFI interface, which expands the application scope of the MFI interface.

In the embodiment of the present invention, after receiving 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 contained in the FlexO data frame, and then can directly determine the sub-rate signal. This saves the process of restoring the combination of OTUC signals of each channel to OTUCn and extracting and analyzing the time slot distribution information of the OTUCn signals. By adding mapping information to the FlexO data frame corresponding to the OTUC signals of each channel, the transmission of sub-rate signals is accelerated. 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 implement the embodiment shown in FIG. The module sends the sub-rate signal or the FlexO-mi signal including the sub-rate signal to the optical communication device 2 through the optical transport network, so that the optical communication device 2 receives the sub-rate signal, refer to the embodiment shown in FIG. 5 , In the case where the optical communication device 2 receives the FlexO-mi signal including the sub-rate signal, reference may be made to the embodiment shown in FIG. 6 .

The embodiments shown in FIG. 5 and FIG. 6 will be further introduced below.

FIG. 5 is a schematic flowchart of another method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention. In this embodiment, the sending end takes an ODSP chip as an example, and the receiving end takes a Framer chip as an example for description, and the signal received by the ODSP chip through the optical module is a sub-rate signal. As shown in FIG. 5 , the method for transmitting and receiving a sub-rate signal includes steps 501 to 509 , please refer to the following specific introduction.

501. The ODSP chip maps the sub-rate signal to the payload area of the FlexO data frame of the flexible optical network.

Among them, the payload area is used to carry sub-rate signals. In this embodiment of the present invention, the sub-rate signal may be an OTUC-Mi sub-rate signal. It should be noted here that the signal sent by the transmitter to the receiver can be an OTUCn-M sub-rate signal. Since the OTUCn-M sub-rate signal will be split into n channels of OTUC-Mi signals during the transmission process, the ODSP chip will For the processing of one OTUC-Mi signal, reference may be made to the detailed description of step 501 to step 508 in the embodiment of the present invention.

502. The ODSP chip adds mapping information to the FlexO data frame, where the mapping information includes frame header position information and valid time slot information.

Optionally, the ODSP chip may add mapping information in the PAD area of the FlexO data frame, so that the mapping information can be determined when the frame header of the FlexO data frame is determined. This embodiment of the present invention does not limit the location of the mapping information in the FlexO data frame.

Wherein, for the case where the sub-rate signal is an OTUC-Mi sub-rate signal, the specific implementation process of adding the mapping information in the FlexO data frame by the ODSP chip can be referred to in step 302 in the embodiment shown in FIG. 3 when the sub-rate signal is an OTUC - The detailed description of the determination mapping information of the Framer chip in the case of the Mi sub-rate signal will not be repeated here.

Optionally, the ODSP chip can also convert the OTUC-Mi sub-rate signal into an OTUC signal, and map the payload area of the FlexO data frame through bit synchronization, where padding information is added at the position of the invalid time slot. For example, the padding information can be is 0 or other predetermined information, which is not limited in this embodiment of the present invention. Wherein, in the process of converting the OTUC-Mi sub-rate signal into the OTUC signal by the ODSP chip, the effective time slot distribution information of the OTUC-Mi sub-rate signal is not determined, so the ODSP chip can obtain the configuration information, and the configuration information uses In order to indicate the valid time slot information, the valid time slot information here refers to the distribution position of the valid time slots included in the OTUC-Mi sub-rate signal when it is converted into an OTUC signal, so as to realize the conversion of the OTUC-Mi sub-rate signal into an OTUC signal.

Optionally, the ODSP chip may acquire the configuration information from the management plane or the controller, or the management plane or the controller may actively send the configuration information to the ODSP chip, which is not limited in this embodiment of the present invention.

503 , the ODSP chip performs FEC encoding processing on the FlexO data frame, and adds FEC encoding information to the inspection area of the FlexO data frame to obtain an encoded FlexO data frame.

504, the ODSP chip sends the FlexO data frame.

The detailed descriptions of steps 303 and 304 in the embodiment shown in FIG. 3 can be referred to for steps 503 and 504. The difference between the two is that the execution body of steps 303 and 304 is the Framer chip, and the execution of steps 503 and 504 The main body is an ODSP chip, which will not be repeated here.

505. The Framer chip receives the FlexO data frame.

506 , the Framer chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC coding information in the inspection area of the FlexO data frame to obtain the decoded FlexO data frame.

507 , the Framer chip extracts mapping information from the FlexO data frame, where the mapping information includes frame header position information and valid time slot information.

The detailed descriptions of steps 305 to 307 in the embodiment shown in FIG. 3 can be referred to for steps 505 to 507. The difference between the two is that the execution body of steps 505 to 507 is the Framer chip, and the execution of steps 305 to 307 The main body is an ODSP chip, which will not be repeated here.

508. The Framer chip generates the sub-rate signal from the payload area of the FlexO data frame according to the mapping information.

The purpose of the Framer chip is to obtain the sub-rate signal, so after the mapping information is determined, 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 is to first determine 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 extract the sub-rate signal according to the valid time slot information. , the subrate signal is generated.

For example, if the FlexO data frame is determined according to the OTUC-Mi sub-rate signal, if the FlexO data frame is determined by bit synchronization mapping, first determine the position of the OTUC signal in the payload area of the FlexO data frame according to the frame header position information. , and then extract Mi valid time slots to obtain the OTUC-Mi sub-rate signal; if the FlexO data frame is determined by asynchronous mapping, first determine the OTUC-Mi sub-rate signal according to the valid time slot information of the OTUC-Mi sub-rate signal. When the mi time slots occupied in the FlexO data frame are determined to the starting position of the OTUC-Mi sub-rate signal according to the frame header position information, and then the OTUC-Mi sub-rate signal is occupied from the mi time slots in the FlexO data frame The OTUC-Mi sub-rate signal can be obtained by demapping directly in the slot.

Optionally, the position where the frame header of the data frame of the sub-rate signal involved in the embodiment of the present invention appears for the first time in the payload area may refer to the bit position, byte, etc. that appear for the first time in the payload area. The position, the position considered as a whole with 16 bytes, etc., are not limited in this embodiment of the present invention.

In the embodiment of the present invention, after receiving the FlexO data frame, the Framer chip can directly determine the frame header position information and the valid time slot information according to the mapping information included in the FlexO data frame, and then can directly determine the sub-rate signal. This saves the process of restoring the combination of OTUC signals of each channel to OTUCn and extracting and analyzing the time slot distribution information of the OTUCn signals. By adding mapping information to the FlexO data frame corresponding to the OTUC signals of each channel, the transmission of sub-rate signals is accelerated. processing efficiency.

FIG. 6 provides another method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention. In this embodiment, an ODSP chip is used as an example for the sending end, and a Framer chip is used as an example for the receiving end for description, and the signal received by the ODSP chip through the optical module is a FlexO-mi signal including the sub-rate signal. As shown in FIG. 6 , the method for transmitting and receiving a sub-rate signal includes steps 601 to 609 , please refer to the following specific introduction.

601. The ODSP chip determines the mapping information of the FlexO-mi signal including the sub-rate signal, where the mapping information includes frame header position information and valid time slot information.

Wherein, the frame header position information is used to indicate the position where the frame header of the data frame of the sub-rate signal appears for the first time in the payload area of the FlexO data frame including the FlexO-mi signal, and the valid time slot information uses It is used to indicate the valid time slot included in the sub-rate signal, or the valid 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.

602. The ODSP chip restores the FlexO-mi signal to the FlexO data frame according to the mapping information.

In an optional solution, the sub-rate signal included in the FlexO-mi signal is an OTUC-Mi sub-rate signal, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid times of the OTUC signal gap. And in the case that the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, in this case, the sending end determines, according to the mapping information, that in the payload area of the FlexO data frame Include the position of the invalid time slot included in the OTUC signal of the OTUC-Mi sub-rate signal, and insert padding information at the position of the invalid time slot to restore the FlexO data frame.

In another optional solution, when the valid 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 end may the mapping information, determine the position of the time slot not occupied by the sub-rate signal in the payload area of the FlexO data frame, and insert padding information at the position of the time slot not occupied by the sub-rate signal, to revert to the FlexO dataframe.

Optionally, the padding information involved in this embodiment of the present invention may be 0 or other predetermined information, which is not limited in this embodiment of the present invention.

603 , the ODSP chip performs FEC encoding processing on the FlexO data frame, and adds FEC encoding information to the inspection area of the FlexO data frame to obtain an encoded FlexO data frame.

604, the ODSP chip sends the FlexO data frame.

605. The Framer chip receives the FlexO data frame.

606 , the Framer chip performs FEC decoding processing on the FlexO data frame, and deletes the FEC coding information in the inspection area of the FlexO data frame, so as to obtain the decoded FlexO data frame.

607. The Framer chip extracts mapping information from the FlexO data frame, where the mapping information includes frame header position information and valid time slot information.

608. The Framer chip generates the sub-rate signal from the payload area of the FlexO data frame according to the mapping information.

Wherein, for steps 603 to 608, reference may be made to the detailed description of steps 503 to 508 in the embodiment shown in FIG. 5, and details are not repeated here.

Optionally, the position where the frame header of the data frame of the sub-rate signal involved in the embodiment of the present invention appears for the first time in the payload area may refer to the bit position, byte, etc. that appear for the first time in the payload area. The position, the position considered as a whole with 16 bytes, etc., are not limited in this embodiment of the present invention.

In the embodiment of the present invention, after receiving the FlexO data frame, the Framer chip can directly determine the frame header position information and the valid time slot information according to the mapping information included in the FlexO data frame, and then can directly determine the sub-rate signal. This saves the process of restoring the combination of OTUC signals of each channel to OTUCn and extracting and analyzing the time slot distribution information of the OTUCn signals. By adding mapping information to the FlexO data frame corresponding to the OTUC signals of each channel, the determination of sub-rate signals is accelerated. efficiency.

Next, based on the method embodiments shown in FIG. 3 to FIG. 6, please refer to FIG. 7a and FIG. 7b together, which provide an exemplary diagram of a method for transmitting and receiving a sub-rate signal according to an embodiment of the present invention. In both FIG. 7a and FIG. 7b , an optical transmission device 1 and an optical transmission device 2 are included, and the two devices respectively include the respective chips shown in FIG. 2 .

Wherein, FIG. 7a illustrates the overhead of terminating the FlexO data frame as an example. Specifically, after the Framer chip of the optical transmission device 1 receives the OTUCn signal, it maps the OTUC signal of each channel into a FlexO data frame, and receives and sends it to the ODSP chip of the optical transmission device 1 through the MFI. Optionally, before sending through the MFI, hard-decision forward error correction (Hard-Decision Forward Error Correction, HD-FEC) is performed on the FlexO data frame, for example, RS (544,514) FEC encoding is used. The ODSP chip extracts the contained OTUCn-M sub-rate signal according to the mapping information contained in the FlexO data frame, and only transmits the extracted OTUCn-M sub-rate signal through the optical module to send to the optical transmission device 2 . Optionally, before sending the OTUCn-M sub-rate signal through the optical module, soft-decision Forward Error Correction (SD-FEC) may be performed on the OTUCn-M sub-rate signal. The ODSP of the optical transmission device 2 receives the transmitted OTUCn-M sub-rate signal through the optical module, maps each OTUC-Mi sub-rate signal to the payload area of the FlexO data frame, and obtains the FlexO data frame. Optionally, SD-FEC is performed after receiving the transmitted OTUCn-M sub-rate signal. Next, the FlexO data frame is sent to the Framer chip through the MFI interface, and the Framer chip extracts the contained OTUCn-M sub-rate signal according to the mapping information contained in the FlexO data frame. 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. Specifically, after the Framer chip of the optical transmission device 1 receives the OTUCn signal, it maps the OTUC signal of each channel into a FlexO data frame, and receives and sends it to the ODSP chip of the optical transmission device 1 through the MFI. Optionally, before sending through the MFI, perform HD-FEC on the FlexO data frame, for example, adopt RS (544, 514) FEC encoding. According to the mapping information contained in the FlexO data frame, the ODSP chip extracts the contained OTUCn-M sub-rate signal, determines the overhead of the FlexO data frame and the extracted OTUCn-M sub-rate signal as the FlexO-m signal, and converts the FlexO-m The signal is transmitted through the optical module to be sent to the optical transmission device 2 . Optionally, before sending the OTUCn-M sub-rate signal through the optical module, the OTUCn-M sub-rate signal may be subjected to soft judgment forward error correction coding SD-FEC. The ODSP of the optical transmission device 2 receives the transmitted FlexO-m signal through the optical module, 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. Payload area, get FlexO data frame. Optionally, SD-FEC is performed after receiving the transmitted OTUCn-M sub-rate signal. Next, the FlexO signal is sent to the Framer chip through the MFI interface, and the Framer chip extracts the contained OTUCn-M sub-rate signal according to the mapping information contained in the FlexO data frame. Optionally, 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.

The above is only an example, and the embodiment of the present invention does not limit the signals transmitted between the optical transmission devices.

FIG. 8 is a schematic structural diagram of a sending apparatus provided by an embodiment of the present application.

In a first implementation solution, the sending device is used to implement the solution on the Framer chip side in the method embodiment shown in FIG. 3 , or the solution on the ODSP chip side in the method embodiment shown in FIG. 5 . The sending device is a sending end. As shown in FIG. 8 , the sending device 800 includes:

a processing unit 801, configured to map the sub-rate signal to the payload area of the flexible optical network FlexO data frame;

The processing unit 801 is further configured to add mapping information in the FlexO data frame, where the mapping information includes frame header position information and valid time slot information, and the frame header position information is used to indicate the sub-rate signal. The position where the frame header of the data frame appears for the first time in the payload area of the FlexO data frame, and the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, or, the valid time slot information used to indicate the time slot occupied by the sub-rate signal in the payload area of the FlexO data frame;

A sending unit 802, configured to send the FlexO data frame.

In an optional embodiment, the sub-rate signal is an OTUC-Mi sub-rate signal or an OTUC signal including an OTUC-Mi sub-rate signal, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and the Mi valid time slots of the OTUC signal.

In an optional embodiment, the sub-rate signal is the OTUC signal including the OTUC-Mi sub-rate signal; the processing unit 801 is mapping the sub-rate signal to the payload of the flexible optical network FlexO data frame In terms of the area, it is specifically used to: directly bit-synchronously map the OTUC signal including the OTUC-Mi sub-rate signal to the payload area of the FlexO data frame.

In an optional embodiment, the effective timeslot information is effective timeslot distribution information of the OTUC signal including the OTUC-Mi sub-rate signal.

In an optional embodiment, the sub-rate signal is the OTUC-Mi sub-rate signal, and in terms of mapping the sub-rate signal to the payload area of the flexible optical network FlexO data frame, the processing unit 801 specifically It is used for: asynchronously mapping the sub-rate signal to the mi time slots of the FlexO data frame, where the payload area of the FlexO data frame is divided into k time slots, where k is greater than or equal to mi.

In an optional embodiment, the valid 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.

In an optional embodiment, the processing unit 801 is further configured to acquire configuration information, where the configuration information is used to indicate valid time slot information.

In a second implementation solution, the sending device is used to implement the solution on the ODSP chip side in the method embodiment shown in FIG. 6 , the sending device is a sending end, and the sending device 800 includes:

The processing unit 801 is configured to determine the mapping information of the FlexO-mi signal including the sub-rate signal, the mapping information includes frame header position information and valid time slot information, and the frame header position information is used to indicate the sub-rate signal. The position where the frame header of the data frame first appears in the payload area of the FlexO data frame including the FlexO-mi signal, and the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, or, the The valid 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 801 is further configured to restore the FlexO-mi signal to the FlexO data frame according to the mapping information;

A sending unit 802, configured to send the FlexO data frame.

In an optional embodiment, the sub-rate signal is an OTUC-Mi sub-rate signal, and the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid time slots of the OTUC signal;

In terms of restoring the FlexO-mi signal to a FlexO data frame according to the mapping information, the processing unit 801 is specifically configured to: the effective timeslot information is used to indicate the effective timeslot included in the sub-rate signal. In the case of , according to the mapping information, determine the position of 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, and determine the position of the invalid time slot at the position of the invalid time slot. Insert padding information to restore to the FlexO data frame.

In an optional embodiment, in terms of restoring the FlexO-mi signal to a FlexO data frame according to the mapping information, the processing unit 801 is specifically configured to:

In the case that the valid 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, it is determined according to the mapping information that in the payload area of the FlexO data frame in the position of the time slot not occupied by the sub-rate signal, and insert padding information at the position of the time slot not occupied by the sub-rate signal to restore the FlexO data frame.

It can be understood that, for the specific implementation of the functional blocks included in the transmitting apparatus in FIG. 8 and the corresponding beneficial effects, reference may be made to the specific introduction of the embodiments in the foregoing FIG. 3 to FIG. 6 , and details are not repeated here.

The sending apparatus in the above-mentioned embodiment shown in FIG. 8 may be implemented by the sending apparatus 900 shown in FIG. 9 . As shown in FIG. 9, a schematic structural diagram of another sending apparatus is provided for an embodiment of the present invention. The sending apparatus 900 shown in FIG. 9 includes: a processor 901 and a transceiver 902, and the transceiver 902 is used to support the sending apparatus The information transmission between 900 and the receiving device involved in the above embodiment, for example, implements the function of the sending unit 802 in the embodiment shown in FIG. 8 . The processor 901 and the transceiver 902 are communicatively connected, eg, via a bus. The sending apparatus 900 may further include a memory 903 . The memory 903 is used for storing program codes and data for the sending apparatus 900 to execute, and the processor 901 is used for executing the application program codes stored in the memory 903, so as to realize the actions of the sending apparatus provided by any of the embodiments shown in FIG. 3 to FIG. 6 . .

It should be noted that, in practical applications, the sending apparatus may include one or more processors, and the structure of the sending apparatus 900 does not constitute a limitation on the embodiments of the present application.

The processor 901 may be a central processing unit (CPU), a network processor (NP), a hardware chip or any combination thereof. The above hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD) or a combination thereof. The above-mentioned PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL) or any combination thereof.

The memory 903 may include volatile memory (volatile memory), such as random access memory (RAM); the memory 903 may also include non-volatile memory (non-volatile memory), such as read-only memory (read-only memory) memory, ROM), flash memory (flash memory), hard disk drive (HDD) or solid-state drive (solid-state drive, SSD); the memory 903 may also include a combination of the above-mentioned types of memory.

An embodiment of the present invention also provides a computer storage medium, which can be used to store computer software instructions used by the sending apparatus in the embodiment shown in FIG. program of. The storage medium includes, but is not limited to, flash memory, hard disk, and solid-state disk.

An embodiment of the present invention also provides a computer program product. When the computer product is run by a computing device, the prediction method designed for the sending apparatus in the embodiment of FIG. 9 can be executed.

FIG. 10 is a schematic structural diagram of a receiving apparatus provided by an embodiment of the present application. The receiving apparatus 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:

a receiving unit 1001, configured to receive a flexible optical network FlexO data frame;

A processing unit 1002, configured to extract mapping information from the FlexO data frame, where the mapping information includes frame header position information and valid time slot information, and the frame header position information is used to indicate the sub-rate included in the FlexO data frame The position where the frame header of the data frame of the signal appears for the first time in the payload area of the FlexO data frame, and the valid time slot information is used to indicate the valid time slot included in the sub-rate signal, or, the valid time slot The 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 1002 is further configured to generate the sub-rate signal or a FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information.

In an optional embodiment, the sub-rate signal may be an OTUC-Mi sub-rate signal; the OTUC-Mi sub-rate signal includes the overhead of the OTUC signal and Mi valid time slots of the OTUC signal; The FlexO-mi signal includes the overhead of the FlexO data frame and the 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 The mi valid time slots.

In an optional embodiment, in generating the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, the processing unit 1002 is specifically configured to:

According to the mapping information, in the payload area of the FlexO data frame, an effective time slot to the sub-rate signal included in the FlexO data frame is determined, and the sub-rate signal is generated.

In an optional embodiment, in generating the FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, the processing unit 1002 is specifically configured to:

According to the mapping information, the sub-rate signal contained in the FlexO data frame is determined in the payload area of the FlexO data frame, and according to the determined sub-rate signal and the FlexO data frame contained in the FlexO data frame The overhead of generating the FlexO-mi signal.

In an optional embodiment, in generating the FlexO-mi signal including the sub-rate signal from the payload area of the FlexO data frame according to the mapping information, the processing unit 1002 is specifically configured to:

According to the mapping information, the valid time slot of the FlexO data frame carrying the sub-rate signal is determined in the payload area of the FlexO data frame, and according to the determined valid time slot of the FlexO data frame and the The overhead of the FlexO data frame contained in the FlexO data frame generates the FlexO-mi signal.

It can be understood that, for the specific implementation of the functional blocks included in the receiving apparatus in FIG. 10 and the corresponding beneficial effects, reference may be made to the specific introduction of the embodiments in FIG. 3 to FIG. 6 , which will not be repeated here.

The receiving apparatus shown in FIG. 10 may be implemented by the receiving apparatus 1100 shown in FIG. 11 . As shown in FIG. 11, a schematic structural diagram of another receiving apparatus is provided for 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 used to support the receiving apparatus The information transmission between 1100 and the sending device involved in the above embodiment, for example, implements the function of the receiving unit 1001 in the embodiment shown in FIG. 10 . The processor 1101 and the transceiver 1102 are communicatively connected, eg, via a bus. The receiving apparatus 1100 may further include a memory 1103 . The memory 1103 is used to store program codes and data for execution by the receiving apparatus 1100, and the processor 1101 is used to execute the application code stored in the memory 1103, so as to realize the actions of the receiving apparatus provided in any of the embodiments shown in FIG. 3 to FIG. 6 . .

It should be noted that, in practical applications, the receiving apparatus may include one or more processors, and the structure of the receiving apparatus 1100 does not constitute a limitation on the embodiments of the present application.

The processor 1101 may be a CPU, NP, hardware chip or any combination thereof. The above hardware chips can be ASIC, PLD or a combination thereof. The above PLD can be CPLD, FPGA, 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 disk; the memory 1103 may also include a combination of the above types of memory.

An embodiment of the present invention also provides a computer storage medium, which can be used to store computer software instructions used by the receiving apparatus in the embodiment shown in FIG. program of. The storage medium includes, but is not limited to, flash memory, hard disk, and solid-state disk.

An embodiment of the present invention also provides a computer program product, which can execute the prediction method designed for the receiving apparatus in the embodiment shown in FIG. 10 when the computer product is run by the computing device.

Further, an embodiment of the present invention may further provide a device including a transmitter and a receiver, where the transmitter may refer to the transmitting apparatus in the embodiment shown in FIG. 8 or FIG. 9 , and the receiver may refer to FIG. 10 or FIG. 11 Receiver in the embodiment shown.

The terms "first", "second", "third" and "fourth" in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes unlisted steps or units, or optionally also includes For other steps or units inherent to these processes, methods, products or devices.

Those of ordinary skill in the art can understand that, in various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, rather than No limitation should be formed on the implementation process of the embodiments of the present application.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented in software, it can 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. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present invention are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that includes an integration of one or more available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), among others.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium. During execution, the processes of the embodiments of the above-mentioned methods may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), or a random access memory (Random Access Memory, RAM) or the like.

The above disclosures are only preferred embodiments of the present invention, and of course, the scope of the rights of the present invention cannot be limited by this. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims (31)

1. a kind of method for transmitting sub- rate signal characterized by comprising

Sub- rate signal is mapped to the payload section of flexible optical-fiber network FlexO data frame by transmitting terminal；

The transmitting terminal adds map information in the FlexO data frame, the map information include frame header position information and Effective gap information, the frame header position information are used to indicate the data frame frame head of the sub- rate signal in the FlexO number According to the position occurred for the first time in the payload section of frame；What effective gap information was used to indicate that the sub- rate signal includes has Time slot is imitated, alternatively, effective gap information is used to indicate in the payload section of the FlexO data frame by the sub- rate signal The time slot of occupancy；

The transmitting terminal sends the FlexO data frame.

2. the method according to claim 1, wherein the sub- rate signal be the sub- rate signal of OTUC-Mi or Person includes the OTUC signal of the sub- rate signal of OTUC-Mi, and the sub- rate signal of OTUC-Mi includes the optical transmission unit of 100G (OTUC) Mi of the expense of signal and the OTUC signal effective time slots.

3. according to the method described in claim 2, it is characterized in that, it includes OTUC-Mi speed that the sub- rate signal, which is described, The OTUC signal of rate signal；Sub- rate signal is mapped to the payload section of flexible optical-fiber network FlexO data frame by the transmitting terminal, packet It includes:

The direct bit synchronous of OTUC signal including the sub- rate signal of OTUC-Mi is mapped to FlexO number by the transmitting terminal According to the payload section of frame.

4. according to the method described in claim 3, it is characterized in that, it includes OTUC-Mi that effective gap information, which is described, Effective time slot distributed intelligence of the OTUC signal of rate signal.

5. according to the method described in claim 2, it is characterized in that, the sub- rate signal is the sub- rate letter of the OTUC-Mi Number, sub- rate signal is mapped to the payload section of flexible optical-fiber network FlexO data frame by the transmitting terminal, comprising:

The transmitting terminal is by mi time slot of the sub- rate signal asynchronous mapping to FlexO data frame, the FlexO data frame Payload section be divided into k time slot, wherein k be greater than or equal to mi.

6. according to the method described in claim 5, it is characterized in that, effective gap information is the FlexO data frame The time slot distributed intelligence occupied in the k time slot of payload Division by the sub- rate signal.

7. according to method described in claim 2,5 or 6, which is characterized in that the transmitting terminal adds in the FlexO data frame Before adding map information, further includes:

Configuration information is obtained, the configuration information is used to indicate effective gap information.

8. a kind of method for transmitting sub- rate signal characterized by comprising

Transmitting terminal determines the map information of the FlexO-mi signal including sub- rate signal, and the map information includes frame header position Information and effective gap information, the data frame frame head that the frame header position information is used to indicate the sub- rate signal are including The position occurred for the first time in the payload section of the FlexO data frame of FlexO-mi signal；Effective gap information is used to indicate Effective time slot that the sub- rate signal includes, alternatively, effective gap information is used to indicate the net of the FlexO data frame The time slot occupied in lotus area by the sub- rate signal；

The FlexO-mi signals revivification is the FlexO data frame according to the map information by the transmitting terminal；

The transmitting terminal sends the FlexO data frame.

9. according to the method described in claim 8, it is characterized in that, the sub- rate signal is the sub- rate signal of OTUC-Mi, institute The Mi of the expense and the OTUC signal of stating optical transmission unit (OTUC) signal that the sub- rate signal of OTUC-Mi includes 100G is a Effective time slot；The FlexO-mi signals revivification is FlexO data frame according to the map information by the transmitting terminal, comprising:

The transmitting terminal determines in FlexO data frame payload section to include OTUC-Mi according to the map information The position for the invalid time slot that the OTUC signal of rate signal includes, and it is inserted into filling information in the position of the invalid time slot, with It is reduced to the FlexO data frame.

10. according to the method described in claim 8, it is characterized in that, the transmitting terminal according to the map information, will be described FlexO-mi signals revivification is FlexO data frame, comprising:

The transmitting terminal determines and is not believed by the sub- rate in FlexO data frame payload section according to the map information The position of number time slot occupied, and it is inserted into filling information in the position of the time slot not occupied by the sub- rate signal, with It is reduced to the FlexO data frame.

11. a kind of method for receiving sub- rate signal characterized by comprising

Receiving end receives flexible optical-fiber network FlexO data frame；

Map information is extracted in the receiving end from the FlexO data frame, the map information include frame header position information and Effective gap information, the frame header position information are used to indicate the data frame for the sub- rate signal that the FlexO data frame includes The position that frame head occurs for the first time in the payload section of the FlexO data frame；Effective gap information is used to indicate described Effective time slot that sub- rate signal includes, alternatively, effective gap information is used to indicate the payload section of the FlexO data frame The middle time slot occupied by the sub- rate signal；

The receiving end according to the map information from the payload section of the FlexO data frame generate the sub- rate signal or FlexO-mi signal including the sub- rate signal.

12. according to the method for claim 11, which is characterized in that the sub- rate signal is the sub- rate signal of OTUC-Mi； The sub- rate signal of OTUC-Mi be optical transmission unit (OTUC) signal comprising 100G expense and the OTUC signal Mi effective time slots；The FlexO-mi signal includes the expense and the sub- rate signal of OTUC-Mi of FlexO data frame, alternatively, institute Stating FlexO-mi signal includes that the expense of FlexO data frame and the payload section of FlexO data frame are accounted for by the sub- rate signal of OTUC-Mi Mi effective time slots.

13. method according to claim 11 or 12, which is characterized in that the receiving end is according to the map information from institute The payload section for stating FlexO data frame generates the sub- rate signal, comprising:

The receiving end determines the FlexO data frame according to the map information in the payload section of the FlexO data frame The effective time slot for the sub- rate signal for including, and generate the sub- rate signal.

14. method according to claim 11 or 12, which is characterized in that the receiving end is according to the map information from institute The payload section for stating FlexO data frame generates the FlexO-mi signal including the sub- rate signal, comprising:

The receiving end determines the FlexO data frame according to the map information in the payload section of the FlexO data frame The sub- rate signal for including, and the FlexO data frame contained according to the determining sub- rate signal and the FlexO data frame packet Expense generate FlexO-mi signal.

15. method according to claim 11 or 12, which is characterized in that the receiving end is according to the map information from institute The payload section for stating FlexO data frame generates the FlexO-mi signal including the sub- rate signal, comprising:

The receiving end determines carrier rate signal according to the map information in the payload section of the FlexO data frame Effective time slot of the FlexO data frame, and according to the effective time slot and the FlexO number of the determining FlexO data frame The expense for the FlexO data frame for including according to frame generates FlexO-mi signal.

16. a kind of sending device characterized by comprising

Processing unit, for sub- rate signal to be mapped to the payload section of flexible optical-fiber network FlexO data frame；

The processing unit, is also used to add map information in the FlexO data frame, and the map information includes frame head position Confidence breath and effective gap information, the frame header position information are used to indicate the data frame frame head of the sub- rate signal described The position occurred for the first time in the payload section of FlexO data frame；Effective gap information is used to indicate the sub- rate signal The effective time slot for including, alternatively, effective gap information is used to indicate in the payload section of the FlexO data frame by the son The time slot that rate signal occupies；

Transmission unit, for sending the FlexO data frame.

17. sending device according to claim 16, which is characterized in that the sub- rate signal is the sub- rate of OTUC-Mi Signal or OTUC signal including the sub- rate signal of OTUC-Mi, the sub- rate signal of OTUC-Mi include the optical transport of 100G The expense of unit (OTUC) signal and Mi effective time slots of the OTUC signal.

18. sending device according to claim 17, which is characterized in that it includes OTUC- that the sub- rate signal, which is described, The OTUC signal of Mi rate signal；Sub- rate signal is being mapped to flexible optical-fiber network FlexO data frame by the processing unit Payload section in terms of, be specifically used for: the direct bit synchronous of OTUC signal including the sub- rate signal of OTUC-Mi be mapped to The payload section of FlexO data frame.

19. sending device according to claim 18, which is characterized in that effective gap information, which is described, includes Effective time slot distributed intelligence of the OTUC signal of the sub- rate signal of OTUC-Mi.

20. sending device according to claim 17, which is characterized in that the sub- rate signal is OTUC-Mi Rate signal, the processing unit is in terms of the payload section that sub- rate signal is mapped to flexible optical-fiber network FlexO data frame, tool Body is used for: by mi time slot of the sub- rate signal asynchronous mapping to FlexO data frame, the payload of the FlexO data frame Zoning is divided into k time slot, wherein k is greater than or equal to mi.

21. sending device according to claim 20, which is characterized in that effective gap information is the FlexO number According to the time slot distributed intelligence occupied in the k time slot of the payload Division of frame by the sub- rate signal.

22. sending device described in 7,20 or 21 according to claim 1, which is characterized in that

The processing unit, is also used to obtain configuration information, and the configuration information is used to indicate effective gap information.

23. a kind of sending device characterized by comprising

Processing unit, for the map information of the determining FlexO-mi signal including sub- rate signal, the map information includes Frame header position information and effective gap information, the frame header position information are used to indicate the data frame frame head of the sub- rate signal The position occurred for the first time in the payload section for including the FlexO data frame of FlexO-mi signal, effective gap information are used In the effective time slot for indicating that the sub- rate signal includes, alternatively, effective gap information is used to indicate the FlexO data The time slot occupied in the payload section of frame by the sub- rate signal；

The processing unit is also used to according to the map information, is the FlexO data by the FlexO-mi signals revivification Frame；

Transmission unit, for sending the FlexO data frame.

24. sending device according to claim 23, which is characterized in that the sub- rate signal is the sub- rate of OTUC-Mi Signal, the expense of optical transmission unit OTUC signal of the sub- rate signal of OTUC-Mi comprising 100G and the OTUC signal Mi effective time slots；

The processing unit is according to the map information, in terms of being FlexO data frame for the FlexO-mi signals revivification, tool Body is used for: in the case where effective gap information is used to indicate effective time slot that the sub- rate signal includes, according to institute Map information is stated, determines the OTUC signal packet in FlexO data frame payload section including the sub- rate signal of the OTUC-Mi The position of the invalid time slot contained, and it is inserted into filling information in the position of the invalid time slot, to be reduced to the FlexO data Frame.

25. sending device according to claim 23, which is characterized in that the processing unit is believed according to the mapping Breath is specifically used in terms of being FlexO data frame for the FlexO-mi signals revivification:

It is occupied in the payload section that effective gap information is used to indicate the FlexO data frame by the sub- rate signal In the case where time slot, according to the map information, determine in FlexO data frame payload section not by the sub- rate signal The position of the time slot of occupancy, and filling information is not inserted by the position for the time slot that the sub- rate signal occupies described, with also It originally was the FlexO data frame.

26. a kind of reception device characterized by comprising

Receiving unit, for receiving flexible optical-fiber network FlexO data frame；

Processing unit, for extracting map information from the FlexO data frame, the map information includes frame header position information With effective gap information, the frame header position information is used to indicate the data for the sub- rate signal that the FlexO data frame includes The position that frame frame head occurs for the first time in the payload section of the FlexO data frame；Effective gap information is used to indicate institute Effective time slot that sub- rate signal includes is stated, alternatively, effective gap information is used to indicate the payload of the FlexO data frame The time slot occupied in area by the sub- rate signal；

The processing unit is also used to generate the son speed from the payload section of the FlexO data frame according to the map information Rate signal or FlexO-mi signal including the sub- rate signal.

27. reception device according to claim 26, which is characterized in that the sub- rate signal is the sub- rate of OTUC-Mi Signal；The sub- rate signal of OTUC-Mi is the expense and OTUC letter of the optical transmission unit OTUC signal comprising 100G Number Mi effective time slots；The FlexO-mi signal includes the expense and the sub- rate signal of OTUC-Mi of FlexO data frame, or The payload section of person, expense of the FlexO-mi signal comprising FlexO data frame and FlexO data frame is by the sub- rate of OTUC-Mi Mi effective time slots that signal occupies.

28. the reception device according to claim 26 or 27, which is characterized in that the processing unit is according to the mapping In terms of information generates the sub- rate signal from the payload section of the FlexO data frame, it is specifically used for:

According to the map information, the son speed that the FlexO data frame packet contains is determined in the payload section of the FlexO data frame Effective time slot of rate signal, and generate the sub- rate signal.

29. the reception device according to claim 26 or 27, which is characterized in that the processing unit is according to the mapping It is specific to use in terms of information generates the FlexO-mi signal including the sub- rate signal from the payload section of the FlexO data frame In:

According to the map information, the son speed that the FlexO data frame packet contains is determined in the payload section of the FlexO data frame Rate signal, and the expense of the FlexO data frame contained according to the determining sub- rate signal and the FlexO data frame packet generates FlexO-mi signal.

30. the reception device according to claim 26 or 27, which is characterized in that the processing unit is according to the mapping It is specific to use in terms of information generates the FlexO-mi signal including the sub- rate signal from the payload section of the FlexO data frame In:

According to the map information, the FlexO for carrying sub- rate signal is determined in the payload section of the FlexO data frame Effective time slot of data frame, and contained according to effective time slot of the determining FlexO data frame and the FlexO data frame packet The expense of FlexO data frame generates FlexO-mi signal.

31. a kind of equipment, which is characterized in that the equipment includes transmitters and receivers, and the transmitter is used for perform claim It is required that the method for the sub- rate signal of transmission described in 1 to 7；Alternatively, the transmitter requires described in 8 to 10 for perform claim The method for transmitting sub- rate signal；The receiver is for receiving the side of sub- rate signal described in perform claim requirement 11 or 15 Method.