WO2020156352A1 - 传输客户业务的方法、装置、系统及计算机可读存储介质 - Google Patents

传输客户业务的方法、装置、系统及计算机可读存储介质 Download PDF

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WO2020156352A1
WO2020156352A1 PCT/CN2020/073370 CN2020073370W WO2020156352A1 WO 2020156352 A1 WO2020156352 A1 WO 2020156352A1 CN 2020073370 W CN2020073370 W CN 2020073370W WO 2020156352 A1 WO2020156352 A1 WO 2020156352A1
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sub
slot
frame
time slot
overhead
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PCT/CN2020/073370
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English (en)
French (fr)
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刘峰
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中兴通讯股份有限公司
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Priority to EP20749696.9A priority Critical patent/EP3920620A4/en
Publication of WO2020156352A1 publication Critical patent/WO2020156352A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
    • H04J3/1605—Fixed allocated frame structures
    • H04J3/1652—Optical Transport Network [OTN]
    • H04J3/1658—Optical Transport Network [OTN] carrying packets or ATM cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • H04L1/0058—Block-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H04L1/0083—Formatting with frames or packets; Protocol or part of protocol for error control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J2203/00—Aspects of optical multiplex systems other than those covered by H04J14/05 and H04J14/07
    • H04J2203/0001—Provisions for broadband connections in integrated services digital network using frames of the Optical Transport Network [OTN] or using synchronous transfer mode [STM], e.g. SONET, SDH
    • H04J2203/0073—Services, e.g. multimedia, GOS, QOS
    • H04J2203/0082—Interaction of SDH with non-ATM protocols
    • H04J2203/0085—Support of Ethernet

Definitions

  • the present disclosure relates to, but is not limited to, communication technologies, such as a method, device, system, and computer-readable storage medium for transmitting customer services.
  • the rapid increase in user network information traffic has prompted a rapid increase in communication network transmission bandwidth.
  • the interface bandwidth speed of communication equipment has increased from 10M (unit: bit/s) to 100M, and then to 1G (unit: bit) /Sec (bit/s)), 10G, 100G, 400G optical modules have been developed, but the 400G optical modules are expensive, exceeding the price of four 100G optical modules, affecting the commercial economic value of 400G optical modules.
  • the International Standards Organization has defined the Flexible Ethernet (Flexible Ethernet, FlexE) protocol.
  • FlexE Flexible Ethernet
  • Figure 1 is a schematic diagram of an example of bundling four 100G optical modules to form a 400G transmission channel. As shown in Figure 1, four 100G optical modules are bundled through the FlexE protocol to form a 400G transmission channel, which is equivalent to the transmission speed of one 400G optical module, which solves the transmission of 400G services without increasing the cost. demand.
  • the FlexE protocol defines 20 time slots on a single 100G physical line, and the bandwidth of each time slot is 5G.
  • the 4*100G physical line is bundled to provide 4*20 time slots, and the bandwidth of each time slot is also specified as 5G.
  • the number of timeslots and bandwidth of the timeslot defined by the FlexE protocol can meet the customer service transmission needs of the Optical Transport Network (OTN) network.
  • OTN Optical Transport Network
  • PTN Packet Transport Network
  • a 100G physical channel has only 20 time slots in total, and the total number of time slots is too small.
  • the bandwidth of each time slot is 5G, and the bandwidth of a single time slot (or called granularity, the same below) is too large.
  • the number of time slots defined by the FlexE protocol is relatively small, and the bandwidth of each time slot is relatively large, that is, there are few time slots and large bandwidth.
  • the bandwidth of each customer service is relatively small, that is, the number of time slots required is large, and the bandwidth of a single time slot is small. This leads to the FlexE protocol encountered in the application scenarios of PTN services. difficult.
  • a method for implementing small-particle time slots is given.
  • This method is a time slot in the FlexE frame (each time slot block represents 5G bit/s bandwidth, and a time slot is shared among FlexE overhead blocks. 1023 data blocks) to achieve smaller time slot bandwidth. Since the number 1023 is not a multiple of numbers such as 2, 5, etc., it will cause uneven segmentation in many scenes.
  • a 5G time slot is divided into two groups of sub-slots, and one sub-slot occupies 512 time slot blocks in 1023 time slot blocks (slightly less than 2.5G bit/s bandwidth), one sub-slot occupies 513 time slot blocks in 1023 time slot blocks (slightly larger than 2.5G bit/s bandwidth), and the sub-slot bandwidth is not uniform. If both sub-slots use only 512 of the 1023 time-slot blocks, although the sub-slot rates are the same, the rate bandwidth of the two sub-slots is less than the expected standard speed, and the full traffic transmission of the customer service rate cannot be achieved. .
  • the embodiments of the present invention provide a method, device, system, and computer-readable storage medium for transmitting client services, which can use sub-timeslots with completely equal rates and reach the desired nominal rate of the client services to realize the transmission of client services. Reduce bandwidth waste.
  • the embodiment of the present invention provides a method for transmitting client services, including:
  • Determine the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: evenly dividing all data blocks included among the (m+1) overhead blocks corresponding to the time slot Among the obtained N groups of data blocks, m and N are integers greater than or equal to 1;
  • the client service is carried on the determined subslot for transmission; or, the client service is received on the determined subslot.
  • the embodiment of the present invention provides a device for transmitting client services, including:
  • the sub-slot determination module is configured to determine the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: (m+1) overhead blocks corresponding to the time slot A group of data blocks in N groups of data blocks obtained by evenly dividing all included data blocks, where m and N are integers greater than or equal to 1;
  • the customer service transmission module is configured to carry the customer service in the determined sub-time slot for transmission; or, to receive the customer service in the determined sub-time slot.
  • the embodiment of the present invention provides a device for transmitting customer services, including a processor and a computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are executed by the processor, the foregoing Any method of transferring customer business.
  • the embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any of the foregoing methods for transmitting client services are implemented.
  • the embodiment of the present invention provides a system for transmitting client services, including:
  • the first node is set to determine the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: among the (m+1) overhead blocks corresponding to the time slot A group of data blocks in N groups of data blocks obtained by evenly dividing all data blocks, where m and N are integers greater than or equal to 1; carrying the client service on the determined sub-slot for transmission;
  • the second node is configured to determine the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: the data block between (m+1) overhead blocks corresponding to the time slot In a group of data blocks in the N groups of data blocks obtained by evenly dividing all data blocks, m and N are integers greater than or equal to 1, and the client service is received in the determined sub-slot.
  • the embodiment of the present invention includes: determining the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: all data included between (m+1) overhead blocks corresponding to the time slot A group of data blocks in N groups of data blocks obtained by dividing the blocks equally, where m and N are integers greater than or equal to 1; carrying the client service on a certain sub-slot for transmission; or, at a certain sub-time Receive the customer service on the slot.
  • the sub-slots whose rates are completely equal and reach the desired nominal rate of the customer service are used to realize the transmission of the customer service and reduce bandwidth waste.
  • Figure 1 is a schematic diagram of related technology FlexE protocol application
  • FIG. 2 is a schematic diagram of the time slot division structure of the FlexE protocol according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of the time slot transmission service of the FlexE protocol in the 4*100G mode according to the embodiment of the present invention
  • FIG. 4 is a schematic diagram of time slot reception service of FlexE protocol in 4*100G mode according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of a FlexE protocol frame structure according to an embodiment of the present invention.
  • Fig. 6 is a schematic diagram of a FlexE protocol multi-frame structure according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of low-rate client services delivered by the FlexE protocol according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of a method for transmitting client services proposed by an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a time slot division method covering 8 overhead blocks in an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a time slot division manner covering x FlexE frames according to an embodiment of the present invention.
  • FIG. 11 is a schematic diagram of transmitting FlexE frame sequence numbers according to an embodiment of the present invention.
  • FIG. 12 is a schematic diagram of transmitting the first FlexE frame at the beginning of a subslot according to an embodiment of the present invention.
  • FIG. 13 is a schematic diagram of transfer sub-slot configuration mode 1 according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of transfer sub-slot configuration mode 2 according to an embodiment of the present invention.
  • 15 is a schematic diagram of a simplified sub-slot flag and the first FlexE frame according to an embodiment of the present invention.
  • 16 is a schematic diagram of the structural composition of an apparatus for transmitting client services according to another embodiment of the present invention.
  • FIG. 17 is a schematic diagram of the structural composition of a system for transmitting client services proposed by another embodiment of the present invention.
  • the 100G customer message needs to be 64/66 encoded before being sent, and the 64-bit data block is expanded into a 66-bit information block.
  • the additional 2 bits are located in front of the 66-bit block as a 66-bit block.
  • the type of the information block is it a data block or a control block, for example, "10" starts with a control block, "01" starts with a data block), and then sends it out from the optical port in 66-bit blocks.
  • the optical port distinguishes the 66-bit block from the received data stream, then recovers the original 64-bit data from the 66-bit block, and reassembles the data message.
  • the FlexE protocol is at the 64-bit to 66-block conversion layer.
  • the 66-bit data block is sorted and planned. As shown in Figure 2, for 100G services, every 20 66-bit data blocks are divided into a data block group. There are 20 data blocks in each group, representing 20 time slots, and each time slot represents 5G bit/s service speed. .
  • 1023 data block groups (1023*20 data blocks)
  • insert a FlexE overhead block as shown in the black block in Figure 2.
  • After inserting the overhead block continue to send the data block, after sending the second 1023*20 data block, insert the overhead block, and so on, so that in the process of sending the data block, the overhead block will be inserted periodically.
  • the interval between two adjacent overhead blocks is 1023*20 data blocks.
  • the FlexE protocol sorts and plans 66-bit data blocks, and every 20*n 66-bit data blocks are divided into a data block group, each group has a total of 20 *n data blocks represent 20*n time slots.
  • the 4 physical channels are bundled into a logical channel.
  • the last 20 data blocks are sent to the second physical channel, the first 20 data blocks are sent to the third physical channel again, and the last 20 data blocks in the first data block group are sent To the fourth physical channel, and then send the first 20 data blocks of the second data block group to the first physical channel, and so on, send all 20*n data blocks to 4 on average and polling On two physical channels.
  • the data blocks on the 4 physical channels are completely aligned during transmission.
  • the overhead blocks are inserted on the 4 physical channels at the same time, so the data on the 4 physical channels Blocks and overhead blocks are completely aligned.
  • each physical channel receives the data block separately, and then determines the location of the overhead block.
  • Each physical channel realigns the data block groups of the 4 physical channels based on the location of the overhead block. After the data block groups of the 4 physical channels are aligned based on the location of the overhead block, they are reordered according to the inverse process of polling allocation during transmission: the 20 data blocks after the overhead block is obtained from the first physical channel are sorted first, Then 20 data blocks are sorted after the overhead block is obtained from the second physical channel, and 20 data blocks are sorted after the overhead block is obtained from the third physical channel, and then obtained from the fourth physical channel The 20 data blocks after the overhead block are sorted at the end, and then the above process is repeated, the second round of 20 data blocks after the overhead block is first obtained from the first physical channel, and the overhead is obtained from the second physical channel.
  • the data block groups of the four physical channels are re-sorted into a large logical channel data block group.
  • 4 physical channels can be bundled to form a large logical channel.
  • customer services it only perceives a large logical channel, and transmits services through the large logical channel, without knowing the four underlying physical channels.
  • the FlexE overhead block is a 66-bit long overhead block.
  • an overhead block is inserted every 1023*20 data blocks.
  • the overhead block plays a positioning and alignment function in the entire service flow.
  • the location of the first 20 66-bit data blocks in the customer service and the location of the subsequent 20 66-bit data blocks can be known.
  • the content of the overhead block is shown in Figure 5, where 8 consecutive overhead blocks form a FlexE overhead frame.
  • An overhead block consists of a 2-bit block flag and a 64-bit block content.
  • the block flag is located in the first 2 columns, the next 64 columns are the block content, the block flag of the first overhead block is "10", and the block flag of the next 7 overhead blocks is "01" or SS (SS means the content is uncertain).
  • the content of the first overhead block is: 0x4B (8 bits, 4B in hexadecimal), C bit (1 bit, indicating adjustment control), OMF bit (1 bit, indicating overhead frame multi-frame indication), RPF bit ( 1 bit, indicating remote defect indication), RES bit (1 bit, reserved bit), FlexE group number (20 bits, indicating the number of the bundle group), 0x5 (4 bits, 5 in hexadecimal ), 000000 (28 bits, all 0).
  • 0x4B and 0x5 are the flag indications of the first overhead block.
  • the overhead block is the first overhead block in the overhead frame, and the second The last 7 consecutive overhead blocks form an overhead frame.
  • FlexE group number represents the group identifier, and all members with the same group number belong to a group.
  • the physical layer (PHY) number is the member number.
  • PHY number of each member is unique, and all members are sorted according to the PHY number from small to large.
  • the PHY number is 8-bit data, which can represent all numbers between 0 and 255, so there are up to 256 members in a group. In the current standard, 0 and 255 are defined as reserved numbers for special applications. Normal members use numbers from 1-254.
  • the OMF field is a multi-frame indicator signal, as shown in Figure 6.
  • OMF is a single-bit value, which is 0 in 16 consecutive frames, then 1 in 16 consecutive frames, then 0 in 16 consecutive frames, and 1 in consecutive 16 frames, repeated every 32 frames, so that the multiframe is composed of Composed of 32 frames.
  • the client calendar field indicates the name of the client carried in each time slot, and indicates which client the time slot belongs to. The number of timeslots required for client services is uncertain and needs to be flexibly modified. Therefore, Client calendar has two sets of configuration information, Client calendar A and Client calendar B. The two sets of configuration values are in working mode and standby mode. Used to dynamically and smoothly switch configuration information. In the FlexE frame structure, there are three C bits.
  • the calendar switch request (CR) bit and the calendar switch acknowledge (CA) bit are the negotiation signals for the client calendar status switch. The CR initiates the request, and the CA answers the request.
  • the customer services are only connected to n*20 time slots defined by the FlexE protocol (n is the number of physical lines), and each time slot is 5G bandwidth.
  • n is the number of physical lines
  • each time slot is 5G bandwidth.
  • the time slot layer of FlexE has only 20 time slots and can carry up to 20 customer services.
  • the maximum bandwidth of each customer service is 5G.
  • the time slot layer has only 4*20 time slots at most, and each time slot has a 5G bandwidth.
  • the number of time slots and time slot granularity defined by the FlexE protocol can meet the OTN service scenario, but in the PTN service scenario, the FlexE protocol encounters application difficulties. In the PTN scenario, there are many customer services.
  • the bandwidth of each service may be relatively small, with a minimum of 10M. If the 5G time slot of the FlexE protocol is used to transmit a 10M service bandwidth, the bandwidth will be wasted seriously.
  • an embodiment of the present invention proposes a method for transmitting client services, which includes the following steps.
  • Step 800 Determine a sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: averaging all data blocks included between (m+1) overhead blocks corresponding to the time slot In a group of data blocks in the N group of data blocks obtained by dividing, m and N are integers greater than or equal to 1.
  • the number of sub-slots carrying customer services can be determined according to the bandwidth of the customer service and the bandwidth of the sub-slots, that is, the number of sub-slots carrying customer services is determined according to the formula, and G is the sub-slot carrying customer services.
  • the number of time slots, K is the bandwidth of the customer service, and B is the bandwidth of the sub-slot.
  • the bandwidth of the determined G sub-slots is greater than or equal to the bandwidth of the customer service.
  • Step 801 Carry the client service on the determined sub-slot for transmission; or, receive the client service on the determined sub-slot.
  • the sub-slots whose rates are completely equal and reach the desired nominal rate of the customer service realize the transmission of the customer service and reduce the waste of bandwidth.
  • the method before determining the subslots according to the bandwidth of the client service, the method further includes: determining the time slots that need to be divided into subslots; All data blocks included among the (m+1) overhead blocks are divided equally to obtain N groups of data blocks.
  • all data blocks included among the (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots may be divided equally in any manner to obtain N groups of data blocks.
  • all data blocks included between (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots are divided in a uniformly interleaved manner to obtain N groups of the data blocks, and the interleaving period is N.
  • all data blocks included among the (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots are uniformly coded.
  • the FlexE protocol When the FlexE protocol transmits customer services, it places the customer services on part of the fixed time slots of 20*n (n is the number of physical channels) time slots for bearer transmission.
  • the FlexE time slot layer has 20*n time slots, and each time slot repeats 1023 66-bit data blocks between two adjacent overhead blocks, that is, each time slot corresponds to 1023 data between two overhead blocks Blocks, these data blocks belong to the same time slot. Number 1023 data blocks in a time slot, such as data blocks 1, 2, 3, ... 1022, 1023.
  • each data block is individually configured as an independent sub-slot (some data blocks can also be configured as a sub-slot, for example, the odd-numbered data block is configured as a sub-slot, and the even-numbered data block is configured as a sub-slot.
  • a total of 2 sub-timeslots which is equivalent to dividing a time slot into 1023 sub-slots, which is equivalent to expanding the number of time slots of the FlexE protocol from 20*n to 1023*20*n, and the number of time slots is expanded by 1023 times. The goal of increasing the number of time slots and reducing the bandwidth of time slots is achieved.
  • the bandwidth rate of each part is 4.887585532M bit/s, not an integer, but several parts
  • the combined rate is not an integer either. This division method will cause uneven sub-slots in many scenarios.
  • the customer service bandwidth is generally the nominal rate: 10M, 100M, 1G, 1.25G, 2.5G (in bit/s) and other rates.
  • a 5G timeslot is divided into two sub-slots, one sub-slot occupies 512 timeslot blocks in 1023 timeslot blocks (slightly less than 2.5G bit/s bandwidth), and one sub-slot occupies 1023 timeslot blocks 513 time slot blocks (slightly larger than 2.5G bit/s bandwidth), the bandwidth of the two sub-slots is not uniform. If both sub-slots use only one sub-slot to occupy 512 time-slot blocks in 1023 time-slot blocks, although the sub-slot rates are equal, they are both lower than the expected standard speed, and full flow transmission cannot be realized.
  • the corresponding data blocks between multiple FlexE overhead blocks are numbered uniformly, for example, as shown in Figure 9, there are 8 overhead blocks in a FlexE frame, and for a FlexE time slot, there are 8 overhead blocks in one frame.
  • 8*1023 data blocks if one time slot is numbered all data blocks in a frame: data blocks 1, 2, 3,...1022, 1023, 1023+1, 1023+2...1 *1023, 1*1023+1,...8*1023, such a time slot corresponds to 8*1023 data blocks, the maximum total number of sub-slots is a multiple of 8, which can be 2, 4, 8 Divide evenly, a time slot can be divided into 2 sub-slots, or 4 sub-slots, or 8 sub-slots.
  • a slot (rate 5G bit/s) is divided and configured into 4 sub-slots with equal rates, and the rate of one sub-slot is 1.25G bit/ s.
  • a time slot (rate 5G bit/s) can be divided and configured into 5 equal rate sub-slots, and the rate of each sub-slot is 1G bit/s.
  • any of the following methods may be used to indicate the coverage frame range of the sub-slot:
  • Part or all of the bits in the reserved field in the overhead block of the frame are used to indicate that the current frame or the next frame is a predetermined frame covered by the sub-slot, through software configuration, management channel transfer, or network management
  • the command transmission mode determines the total number of frames covered by the sub-slot.
  • the predetermined frame may include any one of the following: the first frame (or the first frame) and the last frame.
  • the sender and receiver need to determine the range of the sub-slot frame.
  • a Frame Series Number (FSN) field is opened in the reserved field of the FlexE frame, and the number of the frame covered by the sub-slot is used to indicate the coverage frame range of the sub-slot .
  • the value of the FSN field is a cyclic variable.
  • the coverage frame of the sub-slot is 5 frames, the content of the FSN field in each frame is 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 0.arranging, increasing from 0 to 4, repeating repeatedly.
  • the data blocks in a cyclic period (0-4 frames) are uniformly coded and uniformly divided into multiple sub-slots.
  • the sending end and the receiving end determine which sub-slot each data block belongs to according to the same sub-slot division method, and transmit the customer service content on the sub-slot.
  • the time slot division method is to cover 5 FlexE frames
  • the FSN field varies from 0 to 4.
  • the FSN field is used to indicate the sequence number of the frame covered by the sub-slot of a FlexE time slot, and indirectly gives the sub-slot
  • the number of cyclic frames can be expressed in many different ways in practical applications. For example, 5 cyclic periods can also be expressed in various ways such as 1-5, 4-0, 5-1.
  • a first frame flag F (first) is set in the reserved field to indicate that this frame is the first frame of multiple sequential frames, and is used to indicate that the sub-slot division covers the first frame of multiple FlexE frames.
  • One frame (or the last frame, the next frame is the first frame).
  • the total number of covered frames of sub-slots is not transmitted in the overhead reserved field. The total number of covered frames is determined by the software configuration mode, management channel transmission mode, or network management command transmission mode of the devices at both ends.
  • the management channel transfer mode may refer to transferring the total number of covered frames through the management channel bytes in the overhead block.
  • the management channel byte can refer to a manager channel section or a lining management channel (manager channel shim to shim). These two management channel bytes are used to transfer management messages.
  • the management messages can be various Ethernet messages, and the message content is customized by the user.
  • the switching moment of the client service carried by the subslot is located at the boundary position of the frame cycle period of the frame to which the (m+1) overhead blocks belong.
  • the switching time of the main time slot configuration table and the standby time slot configuration table in the overhead block is located at the frame boundary, or the boundary position of the frame cycle period of the frame to which the (m+1) overhead blocks belong .
  • the C bit is inverted in the last frame of the frame to which the (m+1) overhead blocks belong, and switched in the first frame of the frame to which the next (m+1) overhead blocks belong The status of the main time slot configuration table and the standby time slot configuration table.
  • the switching moment also occurs at the boundary position of the frame cycle period.
  • the FlexE protocol stipulates that the time slot configuration table calendar A and calendar B can only be switched at the frame boundary.
  • the time slot configuration is switched at the next frame boundary.
  • the switching mode must also occur at the position of the multi-frame boundary covered by the sub-slot, that is, the switching configuration starts from the first frame of the multi-frame covered by the sub-slot Table calendar.
  • the C bit in the FlexE overhead should be reversed in the last frame of the multi-frame covered from the sub-slot, and the configuration table should be officially switched in the next frame (that is, the first frame of the multi-frame).
  • the FSN field varies from 0 to 4
  • the C bit can only be reversed in the frame with the FSN field content equal to 4 (the last frame in the multi-frame).
  • the content of the FSN field is equal to 0, that is, the first frame in the frame period)
  • the switching operation of the configuration table calendar A and calendar B is implemented.
  • the FSN field is used to indicate the sequence number of the frame covered by the sub-slot of a FlexE slot, and indirectly gives the number of cyclic frames of the sub-slot. In practical applications, it can be expressed in many different ways, for example, 5 cyclic periods It can also be expressed in multiple ways such as 1-5, 4-0, 5-1.
  • any of the following methods is used to represent the content of the customer logo:
  • the first part divided by the time slot configuration table in the overhead block indicates whether the time slot participates in the sub-slot mode
  • the second part divided by the time slot configuration table in the overhead block indicates the time
  • the content of the client flag of the slot or the sub-slot the first part can be the high part of the time slot configuration table, and the second part can be the low part of the time slot configuration table; or the first part can be the low part of the time slot configuration table ,
  • the second part can be the high part of the time slot configuration table;
  • Part of the bits in the reserved field of the time slot configuration table in the overhead block is used to indicate whether the time slot participates in the division into sub-slot mode
  • some bits of the reserved field of the time slot configuration table in the overhead block are used to indicate the number of the sub-slot to which the client flag content in the multiframe to which the overhead block belongs belongs.
  • the CR and CA bits in the overhead block are used to implement the configuration of the client flag content of the sub-slot.
  • calendar A and calendar B are used to convey the content of the customer logo carried in each time slot (the time slot carries that customer content).
  • the calendar entry of each frame in the first 20 frames gives the content of the client flag corresponding to the 20 time slots on the member.
  • the corresponding position of the last 12 frames in the multiframe is a reserved field. For all time slots in a FlexE frame, some time slots may be divided into many sub-time slots, and some time slots do not need to be divided.
  • the sub-slot label L (label) is set in the multi-frame structure to indicate whether a slot participates in the sub-slot mode.
  • the user flag content of the time slot can be divided into high and low parts, as shown in Figure 13, the high bit is the flag L, which indicates whether this time slot participates in the sub-slot mode, and the low part indicates the customer flag of the time slot or sub-slot content.
  • the flag L indicates participating in the sub-slot mode
  • the lower part indicates the content of the client flag of one of the sub-slots; when the flag L indicates that it does not participate in the sub-slot mode, the lower part indicates the content of the client flag in this time slot .
  • the flag L can also be located in a reserved field in the calendar table, as shown in Figure 14.
  • Each member has 20 time slots, and 20 flags L are used to indicate whether each time slot participates in the sub-slot mode, and each flag L can be represented by one bit.
  • the calendar table content in each FlexE frame only has 16 bits, and a total of 20 bits can be opened in the reserved fields of the two rows to transmit 20 flag L values. Since a time slot participates in the sub-slot mode, the working mode is basically stable and does not change frequently.
  • the L flag can also be used to indicate whether a time slot is divided into sub-slots, but the equipment at both ends
  • the number of time slots participating in the sub-slot mode is determined through multiple methods such as software configuration mode, management channel transfer mode, or network management command transfer mode, as shown in Figure 15, so that the L flag content is omitted in the multiframe structure.
  • the management channel transfer mode may refer to transferring the slot number participating in the sub-slot mode through the management channel byte in the overhead block.
  • the management channel byte can refer to manager channel section or manager channel shim to shim. These two management channel bytes are used to transfer management messages.
  • the management messages can be various Ethernet messages, and the message content is customized by the user.
  • the position of the time slot in the calendar table is shared by all sub-slots. In a multi-frame period, the position can only transmit the content of the customer flag of one sub-slot.
  • the content of the client flags of different sub-slots is transmitted in different multi-frame periods, and the client flag of each sub-slot is transmitted through multiple multi-frame periods.
  • a segment of sub-slot sequence number (Sub-Slot Number, SSN) is opened in the reserved field of the calendar table to indicate which sub-slot client flag content is transmitted in the current multiframe.
  • the SSN changes sequentially in each multi-frame, and represents the number of the sub-slot in this multi-frame.
  • the SSN field indicates which sub-slot period the multiframe belongs to. For example, when the time slot is equally divided into two sub-slots, the content of the field SSN is 0, 1, 0, 1... and circulates continuously.
  • the time slot entry in the calendar table is the customer flag of sub-slot 0; when the field SSN is 1, it means calendar The time slot entry in the table is the customer flag of sub-slot 1; when the field SSN is 2, it means that the time slot entry in the calendar table is the customer flag of sub-slot 2; when the field SSN is 3, it means in the calendar table The content of the time slot table entry is the customer flag of sub-slot 3; when the field SSN is 4, it means that the content of the time slot table entry in the calendar table is the customer flag of sub-slot 4.
  • the content of the field SSN can be expressed in the form of a serial number, or other data, symbols, etc., such as discontinuity, which are all within the scope of the present invention.
  • Client calendar has two sets of configuration information: Client calendar A and Client calendar B.
  • the two entries are in working mode and standby mode respectively, and the working states of the two entries are dynamically and smoothly switched through the C bit.
  • the sender and receiver work in accordance with the table item content of the working mode.
  • the working status of the calendar entry will be modified to the standby entry Switch to working status and work according to the new configuration content.
  • the configuration process of the calendar entry is defined in the FlexE protocol.
  • the calendar configuration mechanism defined in the FlexE protocol is also used. It turns out that all time slots are completed in a multi-frame period. The configuration and modification of the content of the customer logo of the company are now changed to complete the configuration of the content of the customer logo of all time slots and all sub-slots within multiple multiframe periods.
  • the SSN field gives the sub-slot that the multiframe period belongs to
  • the configuration content in the corresponding slot position in the calendar table entry is the customer information of the sub-slot corresponding to the SSN field, which is completed in one multi-frame
  • the configuration activity of a sub-slot is to complete the configuration of the client flag content of all sub-slots through multiple multiframe periods.
  • the sender inverts the CR bit to notify the receiver that it needs to switch calendar entries.
  • the receiver determines the configuration information content of all sub-slots, and then sends back CA information.
  • the C bit is inverted in the last frame of the FlexE frame period, and the status of the working calendar table entry and the standby calendar table entry is officially switched in the next frame (the first frame in the FlexE frame period) to realize the configuration content of the sub-slot modify.
  • another embodiment of the present invention provides a device for transmitting client services, including a sub-slot determination module 1601 and a client service transmission module 1602.
  • the sub-slot determining module 1601 is configured to determine the sub-slot carrying the client service according to the bandwidth of the client service, and the data block corresponding to the sub-slot includes: (m+1) overhead blocks corresponding to the time slot include A group of data blocks among N groups of data blocks obtained by evenly dividing all data blocks of, m and N are integers greater than or equal to 1.
  • the customer service transmission module 1602 is configured to carry the customer service in the determined sub-time slot for transmission; or, to receive the customer service in the determined sub-time slot.
  • a sub-slot dividing module 1603 may also be included.
  • the sub-slot dividing module 1603 is configured to determine the time slots that need to be divided into sub-slots in the time slot; all data blocks included between (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots Perform average division to obtain N groups of data blocks.
  • the sub-slot dividing module 1603 is configured to divide all the data blocks included in the (m+1) overhead blocks corresponding to the time slots in which the sub-slots need to be divided equally into the following manner: N groups of data blocks: All data blocks included in the (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots are divided in a uniformly interleaved manner to obtain N groups of the data blocks, with the interleaving period Is N.
  • all data blocks included among the (m+1) overhead blocks are uniformly coded.
  • any of the following methods is used to indicate the coverage frame range of the sub-slot:
  • the command transmission mode determines the total number of frames covered by the sub-slot, and the predetermined frame includes any one of the following: the first frame and the last frame.
  • the switching moment of the client service carried by the sub-slot is located at the boundary of the frame cycle period of the frame to which the (m+1) overhead blocks belong.
  • the switching time of the main time slot configuration table and the standby time slot configuration table in the overhead block is located at the frame boundary, or the boundary position of the frame cycle period of the frame to which the (m+1) overhead blocks belong .
  • the C bit is inverted in the last frame of the frame to which the (m+1) overhead blocks belong, and switched in the first frame of the frame to which the next (m+1) overhead blocks belong The status of the main time slot configuration table and the standby time slot configuration table.
  • any of the following methods can be used to represent the content of the customer logo:
  • the first part divided by the time slot configuration table in the overhead block indicates whether the time slot participates in the sub-slot mode, and the second part divided by the time slot configuration table in the overhead block indicates the time The content of the client flag of the slot or the sub-slot;
  • Part of the bits in the reserved field of the time slot configuration table in the overhead block is used to indicate whether the time slot participates in the division into sub-slot mode
  • some bits of the reserved field of the time slot configuration table in the overhead block are used to indicate the number of the sub-slot to which the client flag content in the multiframe to which the overhead block belongs belongs.
  • the CR and CA bits in the overhead block are used to implement the configuration of the client flag content of the sub-slot.
  • Another embodiment of the present invention provides a device for transmitting client services, including a processor and a computer-readable storage medium, the computer-readable storage medium stores instructions, and when the instructions are executed by the processor, Realize any of the above-mentioned methods of transmitting customer services.
  • Another embodiment of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the steps of any one of the foregoing methods for transmitting client services are implemented.
  • another embodiment of the present invention provides a system for transmitting customer services, including a first node 1701 and a second node 1702.
  • the first node 1701 is configured to determine the sub-slots carrying the client services according to the bandwidth of the client services, and the data blocks corresponding to the sub-slots include: all the data blocks included in the (m+1) overhead blocks corresponding to the time slots A group of data blocks in N groups of data blocks obtained by evenly dividing the data blocks, m and N are integers greater than or equal to 1, and the client service is carried on a certain sub-slot for transmission.
  • the second node 1702 is configured to determine the sub-slot carrying the client service according to the bandwidth of the client service; wherein, the data block corresponding to the sub-slot includes: (m+1) overhead blocks corresponding to the time slot include A group of data blocks in the N groups of data blocks obtained by evenly dividing all data blocks of, m and N are integers greater than or equal to 1, and the client service is received in a certain sub-slot.
  • the first node 1701 and/or the second node 1702 are further configured to: determine the time slot that needs to be divided into sub-slots in the time slot; +1) All data blocks included among the overhead blocks are divided equally to obtain N groups of data blocks.
  • the first node 1701 and/or the second node 1702 are set to: use the following method to implement all of the (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots
  • the data blocks are divided equally to obtain N groups of data blocks: all data blocks included between the (m+1) overhead blocks corresponding to the time slots that need to be divided into sub-slots are divided in a uniformly interleaved manner to obtain N groups of data blocks.
  • Data block, the interleaving period is N.
  • all data blocks included among the (m+1) overhead blocks are uniformly coded.
  • the first node 1701 and/or the second node 1702 uses any of the following methods to indicate the sub-slot Coverage frame range:
  • the command transmission mode determines the total number of frames covered by the sub-slot, and the predetermined frame includes any one of the following: the first frame and the last frame.
  • the switching moment of the client service carried by the sub-slot is located at the boundary of the frame cycle period of the frame to which the (m+1) overhead blocks belong.
  • the switching time of the main time slot configuration table and the standby time slot configuration table in the overhead block is located at the frame boundary, or the boundary position of the frame cycle period of the frame to which the (m+1) overhead blocks belong .
  • the C bit is inverted in the last frame of the frame to which the (m+1) overhead blocks belong, and switched in the first frame of the frame to which the next (m+1) overhead blocks belong The status of the main time slot configuration table and the standby time slot configuration table.
  • the first node 1701 and/or the second node 1702 uses any of the following methods to represent the content of the customer logo:
  • the first part divided by the time slot configuration table in the overhead block indicates whether the time slot participates in the sub-slot mode, and the second part divided by the time slot configuration table in the overhead block indicates the time The content of the client flag of the slot or the sub-slot;
  • Part of the bits in the reserved field of the time slot configuration table in the overhead block is used to indicate whether the time slot participates in the division into sub-slot mode
  • the first node 1701 and/or the second node 1702 uses some bits of the reserved field of the time slot configuration table in the overhead block to indicate the sub-frame to which the client flag content in the multiframe to which the overhead block belongs belongs. The number of the time slot.
  • the first node 1701 and/or the second node 1702 uses the CR and CA bits in the overhead block to implement the configuration of the client flag content of the sub-slot.
  • the implementation process of the foregoing device for transmitting client services is the same as the implementation process of the method for transmitting client services in the foregoing embodiment, and will not be repeated here.
  • Such software may be distributed on a computer-readable medium, and the computer-readable medium may include a computer storage medium (or a non-transitory medium) and a communication medium (or a transitory medium).
  • the term computer storage medium includes volatile and nonvolatile implementations in any method or technology for storing information (such as computer readable instructions, data structures, program modules, or other data). Flexible, removable and non-removable media.
  • Computer storage media include but are not limited to Random Access Memory (RAM), Read-Only Memory (ROM), Electrically Erasable Programmable Read-Only Memory, EEPROM) , Flash memory or other storage technologies, compact disc read-only memory (CD-ROM), digital versatile disc (Digital Versatile Disc, DVD) or other optical disc storage, magnetic cartridges, magnetic tapes, magnetic disk storage or other magnetic A storage device, or any other medium that can be used to store desired information and can be accessed by a computer.
  • communication media usually contain computer readable instructions, data structures, program modules, or other data in a modulated data signal such as carrier waves or other transmission mechanisms, and may include any information delivery media .

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Abstract

本文公开了一种传输客户业务的方法、装置和系统，所述传输客户业务的方法包括：根据客户业务的带宽确定承载所述客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的所述子时隙上承载所述客户业务进行发送；或者，在确定的所述子时隙上接收所述客户业务。

Description

传输客户业务的方法、装置、系统及计算机可读存储介质
本申请要求在2019年01月31日提交中国专利局、申请号为201910100797.5的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本公开涉及但不限于通信技术，例如一种传输客户业务的方法、装置、系统及计算机可读存储介质。
背景技术
用户网络信息流量的急剧增加，促使着通讯网络传递带宽的快速提升，通讯设备的接口带宽速度从10M(单位：比特/秒(bit/s))提高到100M，又提高到1G(单位：比特/秒(bit/s))、10G、100G，目前已经研发出400G的光模块，但400G的光模块价格昂贵，超过了4个100G光模块的价格，影响400G光模块商用上的经济价值。为了在100G光模块上传递400G业务，国际标准组织定义了灵活以太网(Flexible Ethernet，FlexE)协议。FlexE协议将多个100G的光模块捆绑起来，形成一个大速度的传递通道。图1是以将4个100G的光模块捆绑起来形成一个400G的传递通道为例的示意图。如图1所示，通过FlexE协议将4个100G光模块捆绑起来，形成一个400G的传递通道，等效于1个400G光模块的传递速度，在不增加成本的情况下解决了400G业务的传递需求。
目前FlexE协议定义在单个100G的物理线路上定了20个时隙，每个时隙带宽是5G。4*100G的物理线路经过捆绑提供4*20个时隙，每个时隙带宽也规定为5G。FlexE协议定义的时隙数量和时隙带宽能够满足光传送网(Optical Transport Network，OTN)网络的客户业务传送需要，但FlexE协议在分组传送网(Packet Transport Network，PTN)网络领域应用时，遇到如下一些困难。
1、100G的物理通道总共只有20个时隙，总时隙数量太少。
2、每个时隙带宽是5G，单时隙的带宽(或称为颗粒度，以下相同)又过大。
FlexE协议定义的时隙数量偏少，每个时隙的带宽又偏大，也即是时隙少、带宽大。在PTN业务领域，客户业务数量很多，每条客户业务的带宽又比较小，即需要的时隙数量多、单个时隙带宽颗粒度小，这就导致FlexE协议在PTN业 务的应用场景中遇到困难。
在一些资料中给出了一种实现小颗粒时隙的方法，该方法是在FlexE帧中一个时隙(每个时隙块代表5G bit/s带宽，一个时隙在FlexE开销块之间共有1023个数据块)上进行分割，实现更小的时隙带宽。由于数字1023不是2、5等数字的倍数，会导致许多场景下分割不均匀的现象。例如，当需要2.5G bit/s的子时隙带宽时，将一个5G时隙分成两组子时隙，一个子时隙占1023个时隙块中的512个时隙块(略小于2.5G bit/s的带宽)，一个子时隙占1023个时隙块中的513个时隙块(略大于2.5G bit/s的带宽)，子时隙带宽不均匀。如果两个子时隙都只用1023个时隙块中的512个时隙块，子时隙速率虽然相等，但两个子时隙速率带宽都小于期望标准速度，无法实现客户业务速率的满流量传送。
发明内容
本发明实施例提供了一种传输客户业务的方法、装置、系统及计算机可读存储介质，能够采用速率完全相等，且达到客户业务的期望的标称速率的子时隙实现客户业务的传输，减小带宽浪费。
本发明实施例提供了一种传输客户业务的方法，包括：
根据客户业务的带宽确定承载所述客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；
在确定的所述子时隙上承载所述客户业务进行发送；或者，在确定的所述子时隙上接收所述客户业务。
本发明实施例提供了一种传输客户业务的装置，包括：
子时隙确定模块，设置为根据客户业务的带宽确定承载所述客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；
客户业务传输模块，设置为在确定的所述子时隙上承载所述客户业务进行发送；或者，在确定的所述子时隙上接收所述客户业务。
本发明实施例提供了一种传输客户业务的装置，包括处理器和计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令被所述处理器执行时，实现上述任一种传输客户业务的方法。
本发明实施例提供了一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述任一种传输客户业务的方法的步骤。
本发明实施例提供了一种传输客户业务的系统，包括：
第一节点，设置为根据客户业务的带宽确定承载所述客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的所述子时隙上承载所述客户业务进行发送；
第二节点，设置为根据客户业务的带宽确定所述承载客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的所述子时隙上接收所述客户业务。
本发明实施例包括：根据客户业务的带宽确定承载客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的子时隙上承载所述客户业务进行发送；或者，在确定的子时隙上接收所述客户业务。本发明实施例采用速率完全相等，且达到客户业务的期望的标称速率的子时隙实现了客户业务的传输，减小了带宽浪费。
附图说明
图1为相关技术FlexE协议应用示意图；
图2为本发明实施例FlexE协议时隙划分结构示意图；
图3为本发明实施例FlexE协议在4*100G模式下的时隙发送业务示意图；
图4为本发明实施例FlexE协议在4*100G模式下的时隙接收业务示意图；
图5为本发明实施例FlexE协议帧结构示意图；
图6为本发明实施例FlexE协议复帧结构示意图；
图7为本发明实施例FlexE协议传递低速率客户业务示意图；
图8为本发明一个实施例提出的传输客户业务的方法的流程图；
图9为本发明实施例覆盖8个开销块的时隙划分方式示意图；
图10为本发明实施例覆盖x个FlexE帧的时隙划分方式示意图；
图11为本发明实施例传递FlexE帧序列号示意图；
图12为本发明实施例传递子时隙起始首FlexE帧示意图；
图13为本发明实施例传递子时隙配置方式1示意图；
图14为本发明实施例传递子时隙配置方式2示意图；
图15为本发明实施例简化子时隙标志、首FlexE帧示意图；
图16为本发明另一个实施例提出的传输客户业务的装置的结构组成示意图；
图17为本发明另一个实施例提出的传输客户业务的系统的结构组成示意图。
具体实施方式
下文中将结合附图对本发明实施例进行详细说明。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互任意组合。
在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行。并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。
用户网络信息流量的急剧增加，带动通讯网络信息传递带宽的快速提升，通讯设备的接口带宽速度从10M提高到100M，又提高到1G、10G、100G，目前已经研发出400G的光模块，但400G的光模块价格昂贵，超过了4个100G光模块的价格，影响400G光模块商用的经济价值。在不增加成本的情况下，为了解决400G业务的传递需求，能在100G光模块上传递400G业务，国际标准组织定义了FlexE协议。FlexE协议将多个100G的光模块捆绑起来，形成一个大业务速度的传递通道。图1是以将4个100G的光模块捆绑起来形成一个400G的传递通道为例的示意图。如图1所示，通过FlexE协议将4个100G光模块捆绑起来，形成一个400G传递通道，等效于1个400G光模块的业务传递速度，既满足了400G业务的传递需求，也解决了业务传递的经济价值问题。
在客户业务的传输时，100G的客户报文在发送前需要进行64/66编码，将64比特的数据块扩展成66比特的信息块，增加的2比特位于66比特块前面，作为66比特块的开始标志和信息块的类型(是数据块还是控制块，例如“10”开始的是控制块，“01”开始的是数据块)，然后以66比特块的方式从光口发送出去。在接收时，光口从接收到的数据流中辨别出66比特块，然后从66比特块中恢复出原始的64比特数据，重新组装出数据报文来。FlexE协议处于64比特到66块转换层，在发送66比特数据块前，对66比特的数据块进行排序和规划。如图2所示，对于100G业务，每20个66比特数据块划分为一个数据块组，每组中共20个数据块，代表20个时隙，每个时隙代表5G bit/s的业务速度。发送 66比特的数据块时，每发送完1023个数据块组(1023*20个数据块)，插入一个FlexE开销块，如图2中黑色块。插入开销块后，继续发送数据块，发送完第二个1023*20个数据块后，再插入开销块，以此类推，这样在发送数据块的过程中，会周期性地插入开销块，相邻两个开销块的间隔是1023*20个数据块。
当使用FlexE协议实现n个物理通道捆绑成一个大逻辑通道时，FlexE协议对66比特的数据块进行排序和规划，每20*n个66比特数据块划分为一个数据块组，每组中共20*n个数据块，代表20*n个时隙。如图3所示，将4个物理通道捆绑成一个逻辑通道，发送时，将第一个数据块组中前20个数据块发送到第一个物理通道上，将第一个数据块组次后20个数据块发送到第二个物理通道上，将第一个数据块组再次后20个数据块发送到第三个物理通道上，将第一个数据块组中最后20个数据块发送到第四个物理通道上，然后将第二个数据块组前20个数据块发送到第一个物理通道上，以此类推，将所有20*n个数据块平均、轮询地发送到4个物理通道上。4个物理通道上的数据块在发送时是完全对齐的，在4个物理通道都是每间隔1023个数据块组，在4个物理通道上同时插入开销块，这样4个物理通道上的数据块、开销块是完全对齐的。在接收端，如图4所示，每个物理通道单独接收数据块，然后确定开销块位置。每个物理通道都以开销块位置为基准，重新对齐4个物理通道的数据块组。4个物理通道的数据块组以开销块位置为基准对齐后，按照发送时轮询分配的逆过程重新排序：先从第一个物理通道中取得开销块之后的20个数据块排序在前面，然后从第二个物理通道中取得开销块之后20个数据块排序在后面，再从第三个物理通道中取得开销块之后20个数据块排序在次后，再从第四个物理通道中取得开销块之后20个数据块排序在最后，然后重复上面的过程，先从第一个物理通道中取得开销块之后的第二轮20个数据块排序次后，从第二个物理通道中取得开销块之后的第二轮20个数据块排序次后，以此类推，将四个物理通道的数据块组重新排序成一个大的逻辑通道数据块组。通过这种方式，可以将4个物理通道捆绑起来，组成一个大的逻辑通道。对客户业务来讲，只是感知到一个大的逻辑通道，通过大的逻辑通道传递业务，而不需要知道底层的四个物理通道。
FlexE开销块是一个66比特长的开销块，在业务数据流发送时，每间隔1023*20个数据块插入一个开销块。开销块在整个业务流中起到定位对齐功能，找到开销块，就可以知道客户业务中第一个20个66bit数据块的位置，以及后续的20个66bit数据块的位置。开销块的内容如图5所示，连续8个开销块组 成一个FlexE开销帧。一个开销块由2比特的块标志和64位的块内容组成。块标志位于前2列，后面64列是块内容，第一个开销块的块标志是“10”，后面7个开销块的块标志是“01”或SS(SS表示内容不确定)。第一个开销块的内容是：0x4B(8位，十六进制的4B)、C比特(1位，指示调整控制)、OMF比特(1位，表示开销帧复帧指示)、RPF比特(1位，表示远端缺陷指示)、RES比特(1位，保留位)、FlexE组编号(FlexE group number)(20位，表示捆绑组的编号)、0x5(4位，十六进制的5)、000000(28位，都是0)。其中的0x4B和0x5是第一个开销块的标志指示，在接收时，当找到一个开销块中对应位置是0x4B和0x5，则表示该开销块是开销帧中的第一个开销块，和次后连续的7个开销块组成一个开销帧。
在FlexE开销帧结构中，FlexE group number表示group组标识，所有group number相同的成员都属于一组。物理层(physical layer，PHY)number是成员编号，在同一个group number中，每个成员的PHY number是唯一的，所有成员在排序时是按照PHY number从小到大的排序规则进行排序。PHY number是8位的数据，可以表示0-255之间的所有编号，因此一个group中最多有256个成员。在当前标准中定义0和255是保留编号，供特殊应用，正常成员使用1-254的编号。
在第一个开销块中，OMF字段是复帧指示信号，如图6所示。OMF是单比特数值，连续16帧中为0，然后连续16帧中为1，然后又是连续16帧中为0，然后连续16帧中为1，每32帧重复一次，这样复帧就是由32帧组成。在帧中，客户名称(Client calendar)字段表示每个时隙承载的客户名称，表示本时隙属于那个客户。客户业务在承载时需要的时隙数量是不确定的，需要能灵活修改，因此Client calendar有两套配置信息，Client calendar A和Client calendar B，两套配置值分别处于在工作模式和备用模式，用于动态、平滑地切换配置信息。在FlexE帧结构中，有三个C比特。当所有的C比特为“0”时，Client calendar A处于工作模式，Client calendar B处于备用模式；反之，当所有的C比特为“1”时，Client calendar A处于备用模式，Client calendar B处于工作模式。在一个时间点，只有一套Client calendar配置值处于工作模式，另外一个配置值处于备用模式。calendar表项切换请求(calendar swith request，CR)比特和calendar表项切换应答(calendar swith acknowledge，CA)比特是Client calendar状态切换的协商信号。CR发起请求，CA应答请求。需要修改时隙配置值时，修改备用模 式的配置内容，同时反转CR比特通知对端表示Client calendar的状态需要发生切换，对端根据备用配置Client calendar值进行准备，准备好后回送CA应答信号给发起端，等两端协商一致后，启动配置表的切换流程，发送端将所有C比特值反转，原来处于工作模式的Client calendar表变为备用模式，将原来处于备用模式Client calendar表变成工作模式，实现Client calendar时隙内容的动态修改。
FlexE协议承载客户业务时，如图7所示，客户业务只是和FlexE协议定义的n*20个时隙对接(n为物理线路数)，每个时隙是5G带宽。在只有一个100G成员时，FlexE的时隙层只有20个时隙，最多可以承载20个客户业务，每个客户业务最大带宽是5G。在4*100G的模式下，时隙层最多也只有4*20个时隙，每个时隙5G带宽。FlexE协议定义的时隙数量和时隙颗粒度可以满足OTN业务的场景，但是在PTN业务场景下，FlexE协议则遇到应用困难。PTN场景下，客户业务数量很多，即使总客户业务带宽不超过100G，但总客户业务数量达到1K条、甚至几十K条客户业务，也是数量远大于FlexE定义的20个时隙(单100G物理带宽)。在PTN业务场景下，每个业务的带宽可能比较小，最小可以10M，如果采用FlexE协议的5G时隙来传递一条10M的业务带宽，则带宽浪费严重。
参见图8，本发明一个实施例提出了一种传输客户业务的方法，包括如下步骤。
步骤800、根据客户业务的带宽确定承载客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数。
在本发明实施例中，可以根据客户业务的带宽和子时隙的带宽确定承载客户业务的子时隙的数量，即按照公式确定承载客户业务的子时隙的数量，G为承载客户业务的子时隙的数量，K为客户业务的带宽，B为子时隙的带宽。
确定承载客户业务的子时隙的数量后，可以按照任意方式确定具体哪些子时隙承载客户业务。例如，将处于空闲状态的G个子时隙用来承载客户业务。
在本发明实施例中，确定的G个子时隙的带宽大于或等于客户业务的带宽。
步骤801、在确定的子时隙上承载所述客户业务进行发送；或者，在确定的子时隙上接收所述客户业务。
本发明实施例采用速率完全相等，且达到客户业务的期望的标称速率的子 时隙实现了客户业务的传输，减小了带宽浪费。
在本发明另一个实施例中，根据客户业务的带宽确定子时隙之前，该方法还包括：确定所述时隙中需要划分子时隙的时隙；将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块。
一实施例中，可以按照任意方式将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块。例如，将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块按照均匀间插的方式进行划分得到N组所述数据块，间插周期为N。
在本发明实施例中，需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块被统一编码。
FlexE协议在传递客户业务时，将客户业务放在20*n个(n是物理通道数量)时隙中的部分固定时隙上承载传送。FlexE时隙层有20*n个时隙，每个时隙在相邻两个开销块之间重复出现1023个66bit数据块，即每个时隙在两个开销块之间对应有1023个数据块，这些数据块属于同一个时隙。对一个时隙中1023个数据块进行编号，如数据块1、2、3、……1022、1023。如果每个数据块单独配置成独立的子时隙(也可以将部分数据块配置成一个子时隙，如编号为奇数数据块配置为一个子时隙，偶数数据块配置为一个子时隙，共2个子时隙)，相当于将一个时隙分成1023个子时隙，这样相当于将FlexE协议的时隙数量从20*n扩张到1023*20*n，时隙数量扩大了1023倍，实现了增加时隙数量、减少时隙速率带宽的目标。将一个时隙分成1023份时，由于1023数字不是2、5等数字的倍数，将一个5G bit/s分割成1023份时，每份带宽速率是4.887585532M bit/s，不是一个整数，几份组合起来的速率也不是一个整数，这种分割方式会导致许多场景下分割出子时隙不均匀的现象。实际应用中，客户业务带宽一般是标称速率：10M、100M、1G、1.25G、2.5G(单位为bit/s)等速率，例如当需要2.5G bit/s的子时隙带宽时，将一个5G时隙分成两个子时隙，一个子时隙占1023个时隙块中的512个时隙块(略小于2.5G bit/s的带宽)，一个子时隙占1023个时隙块中的513个时隙块(略大于2.5G bit/s的带宽)，两个子时隙带宽不均匀。如果两个子时隙都只用一个子时隙占1023个时隙块中的512个时隙块，子时隙速率虽然相等，但都小于期望标准速度，无法实现满流量传送。如果将多个FlexE开销块(即多帧)之间的对应数据块进行统一编号，例如，如图9所示，一个FlexE帧中有8个开销块，对一个FlexE时隙在一帧中有8*1023个数据块， 如果将一个时隙在一帧中所有数据块编号：数据块1、2、3、……1022、1023、1023+1、1023+2.......1*1023、1*1023+1、.......8*1023，这样一个时隙对应8*1023个数据块，最大总子时隙数量是8的倍数，可以被2、4、8整除，可以将一个时隙均分成2个子时隙，或4个子时隙，或8个子时隙。当需要实现1.25G bit/s速率的子时隙时，将一个时隙(速率5G bit/s)划分、配置成4个速率均等的子时隙，一个子时隙的速率是1.25G bit/s。
在实际应用中，有大量的客户速率是1G bit/s，需要将一个时隙(速率5G bit/s)划分、配置成5个速率均等的子时隙，但8*1023不是5的倍数，无法被5整除，直接分成5个子时隙时会导致子时隙速率不均等，部分子时隙速率大于1G bit/s，部分子时隙速率小于1G bit/s，无法满足要求。针对一个时隙，在5个FlexE帧中有5*8*1023个数据块，如图10(x＝5)所示，如果将对应的5帧中所有数据块进行编码：数据块1、2、3、……1022、1023、1023+1、1023+2.......1*1023、1*1023+1、.......8*1023、8*1023+1.......2*8*1023、2*8*1023+1、.......5*8*1023，总数据块数量为5*8*1023，总数量中有2、4、5、8的倍数，可以将一个时隙(速率5G bit/s)划分、配置成5个速率均等的子时隙，每个子时隙的速率为1G bit/s。
在本发明实施例中，当所述(m+1)个开销块所属的帧数大于或等于2时，可以采用以下任一种方式表示所述子时隙的覆盖帧范围：
采用所述帧的开销块中的保留字段中的部分或全部比特位表示所述子时隙的覆盖的帧的编号；
采用所述帧的开销块中的保留字段中的部分或全部比特位表示当前帧或下一帧为所述子时隙的覆盖的帧的预定帧，通过软件配置方式、管理通道传递方式或网管命令传递方式确定所述子时隙的总覆盖帧数。
预定帧可以包括以下任意一个：第一帧(或首帧)、最后一帧。
当在多个FlexE帧范围内将一个时隙划分成多个子时隙时，发送端和接收端需要确定划分子时隙帧范围，可以在FlexE帧中保留字段中开辟一段字段来标注子时隙覆盖的帧范围，例如图11中，在FlexE帧中保留字段中开辟一段帧范围编号(Frame Series Number，FSN)字段，用子时隙的覆盖的帧的编号来表示子时隙的覆盖帧范围。FSN字段的数值是循环变量，当子时隙的覆盖帧范围为5帧时，FSN字段在每帧中的内容是0、1、2、3、4、0、1、2、3、4、0......，从0到4依次增加，循环复现。对一个时隙当需要划分成子时隙时，在一个循环周期内(0-4帧)的数据块被统一编码，统一划分成多个子时隙。发送端和接收端 按照同样的子时隙划分方式确定每个数据块属于哪个子时隙，在该子时隙上传递客户业务内容。例如，当时隙划分方式是覆盖5个FlexE帧时，FSN字段变化范围为0-4，FSN字段用于表示一个FlexE时隙的子时隙覆盖的帧的顺序号，间接给出子时隙的循环帧数，在实际应用中可以用多种不同的表示方式，例如，5个循环周期也可以用1-5、4-0、5-1等各种方式来表示。
表示子时隙的覆盖帧范围除了使用字段FSN以帧编号方式实现外，也可以通过两端设备配置和指示首帧标志方式来实现，如图11所示。在图11中，在保留字段中设置一个首帧标志F(first)，用来指示本帧是多个顺序帧的第一帧，用来指示子时隙划分时覆盖多个FlexE帧中的第一帧(或表示最后一帧，下一帧是第一帧)。在开销保留字段中不传递子时隙的总覆盖帧数，总覆盖帧数由两端设备通过软件配置方式、管理通道传递方式或网管命令传递方式确定。
管理通道传递方式可以是指通过开销块中的管理通道字节来传递总覆盖帧数。管理通道字节可以是指段层管理通道(manager channel section)或衬层管理通道(manager channel shim to shim)。这两种管理通道字节是用来传递管理报文的，管理报文可以是各种以太网报文，报文内容由用户自定义。
在本发明实施例中，子时隙所承载的客户业务的切换时刻位于所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
在本发明实施例中，开销块中的主时隙配置表和备时隙配置表的切换时刻位于帧边界，或所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
一实施例中，在所述(m+1)个开销块所属的帧的最后一帧中反转C比特，在下一个所述(m+1)个开销块所属的帧的第一帧中切换所述主时隙配置表和所述备时隙配置表的状态。
当子时隙的客户配置内容进行切换时，切换时刻也要发生在帧循环周期的边界位置。在没有子时隙划分时，FlexE协议规定时隙配置表calendar A和calendar B的切换时刻只能发生在帧边界，当帧中三个C比特发生反转时，在下一个帧边界切换时隙配置表calendar A和calendar B的状态，原来处于工作状态的表项改为备用状态，原来处于备用状态的表项改为工作状态。当进行子时隙划分时，切换方式除了在帧边界时刻外，还必须发生在子时隙覆盖的多帧边界位置，也就是从子时隙覆盖的多帧中的第一个帧开始切换配置表calendar。在具体实现上，应当在从子时隙覆盖的多帧中的最后一个帧中反转FlexE开销中的C比特，在下帧(也就是多帧中的第一帧)正式切换配置表。例如，当时隙划分 方式是覆盖5个FlexE帧时，FSN字段变化范围为0-4，C比特只能在FSN字段内容等于4的帧(多帧中的最后一帧)进行反转，在下帧(FSN字段内容等于0，也就是帧周期中第一帧)中实现配置表calendar A和calendar B的切换操作。在FSN字段内容等于0-3的帧中，C比特不能发生反转，不能进行配置表calendar A和calendar B的切换活动，以保证每个子时隙在帧循环周期内接收完。FSN字段用于表示一个FlexE时隙的子时隙覆盖的帧的顺序号，间接给出子时隙的循环帧数，在实际应用中可以用多种不同的表示方式，例如，5个循环周期也可以用1-5、4-0、5-1等多种方式来表示。
在本实施例中，采用以下任一种方式表示客户标志内容：
采用所述开销块中的时隙配置表分割成的第一部分表示所述时隙是否参与划分成子时隙模式，采用所述开销块中的时隙配置表分割成的第二部分表示所述时隙或所述子时隙的客户标志内容；第一部分可以是时隙配置表的高位部分，第二部分可以是时隙配置表的低位部分；或者，第一部分可以是时隙配置表的低位部分，第二部分可以是时隙配置表的高位部分；
采用所述开销块中的时隙配置表的保留字段的部分比特表示所述时隙是否参与划分成子时隙模式；
通过软件设置方式、或管理通道传递方式、或网管命令传递方式确定参与划分成子时隙模式的时隙编号。
一实施例中，采用所述开销块中的时隙配置表的保留字段的部分比特表示所述开销块所属的复帧中的客户标志内容所属的子时隙的编号。
一实施例中，采用所述开销块中的CR和CA比特实现所述子时隙的客户标志内容的配置。
在确定子时隙的划分范围后，需要确定每个子时隙的客户标志内容。在FlexE标准中，calendar A和calendar B用来传递每个时隙承载的客户标志内容(该时隙承载那个客户内容)。在一个复帧(32帧组成一个复帧)周期中，前20帧中每帧calendar表项给出本成员上的20个时隙对应客户标志内容。在复帧中后12帧的对应位置为保留字段。对于FlexE帧中的所有时隙，有的时隙可能被划分成许多子时隙，有的时隙不需要划分。在复帧结构中设置子时隙标志L(label)，表示一个时隙是否参与划分成子时隙模式。可以将时隙的客户标志内容分割成高位和低位部分，如图13所示，高位为标志L，表示本时隙是否参与划分子时隙模式，低位部分表示时隙或子时隙的客户标志内容。当标志L表 示为参与子时隙模式时，则低位部分表示其中一个子时隙的客户标志内容；当标志L表示为不参与子时隙模式时，则低位部分表示本时隙的客户标志内容。标志L也可以位于calendar表中保留字段中，如图14所示。每一个成员有20个时隙，用20个标志L来分别表示每个时隙是否参与子时隙模式，每个标志L可以用一位比特来表示。在每个FlexE帧中calendar表内容只有16个比特，可以在两行保留字段共开辟20位用于传递20个标志L值。由于一个时隙是否参与子时隙模式，工作模式是基本是稳定，不会频繁变化，因此在具体应用中，也可以不用L标志表示一个时隙是否被划分成子时隙，而是两端设备通过软件配置方式、或管理通道传递方式、或网管命令传递方式等多种方式确定参与子时隙模式的时隙编号，如图15所示，这样在复帧结构中省去L标志内容。
管理通道传递方式可以是指通过开销块中的管理通道字节来传递参与子时隙模式的时隙编号。管理通道字节可以是指manager channel section或manager channel shim to shim。这两种管理通道字节是用来传递管理报文的，管理报文可以是各种以太网报文，报文内容由用户自定义。
当一个时隙被划分为多个子时隙时，在calendar表中该时隙位置内容由所有子时隙共享，在一个复帧周期中该位置只能传递一个子时隙的客户标志内容，可以在不同复帧周期中传递不同子时隙的客户标志内容，通过多个复帧周期传递完每个子时隙的客户标志。在calendar表保留字段开辟一段字段子时隙顺序号(Sub-Slot Number，SSN)，表示当前复帧中传递哪个子时隙的客户标志内容。SSN在每个复帧中顺序变化，表示本复帧中子时隙的编号。如果一个时隙不参与子时隙模式，则忽略字段SSN内容。当一个时隙参与子时隙模式时，则SSN字段表示本复帧属于哪个子时隙周期。例如，当时隙均等地划分为两个子时隙时，则字段SSN内容在0、1、0、1......不断循环。在一个FlexE复帧周期中字段SSN为0时，表示本周期传递子时隙0的客户标志，calendar表中对应时隙位置内容是子时隙0的客户标志；当字段SSN为1，表示本周期传递子时隙1的客户标志，calendar表中对应时隙表项内容是子时隙1的客户标志。依次类推，当时隙被划分为5个均等的子时隙时，字段SSN内容在0、1、2、3、4、0、1、2、3、4、0......不断循环。在一个FlexE复帧周期中字段SSN为0时，表示本周期传递子时隙0的客户标志，calendar表中时隙表项内容是子时隙0的客户标志；当字段SSN为1，表示calendar表中时隙表项内容是子时隙1的客户标志；当字段SSN为2，表示calendar表中时隙表项内容是子时隙2的客户标志；当字 段SSN为3，表示calendar表中时隙表项内容是子时隙3的客户标志；当字段SSN为4，表示calendar表中时隙表项内容是子时隙4的客户标志。一个时隙被划分成多少个子时隙，则需要多少FlexE复帧周期来传递所有子时隙的客户标志内容。字段SSN内容可以是序列号方式，也可以是不连续等其他数据、符号等方式来表示，这些都本发明范围内。
在FlexE协议中，通过C、CR、CA比特实现calendar表项的配置工作。Client calendar有两套配置信息：Client calendar A和Client calendar B，在一个具体时刻两个表项分别处于在工作模式和备用模式，通过C比特进行动态、平滑地切换两个表项的工作状态。当所有的C比特为“0”时，Client calendar A处于工作模式，Client calendar B处于备用模式；反之，当所有的C比特为“1”时，Client calendar A处于备用模式，Client calendar B处于工作模式。在正常工作时，发送端、接收端按照工作模式的表项内容进行工作。当需要修改时隙中的客户标志内容实现时隙改配时，在备用calendar中修改、配置新的客户标志内容，然后通过C比特切换，calendar表项的工作状态，将修改好的备用表项切换为工作状态，按照新配置内容进行工作。在FlexE协议中定义了calendar表项的配置过程，当一个时隙被配置为子时隙模式时，也采用在FlexE协议中定义了的calendar配置机制，原来在一个复帧周期内完成所有时隙的客户标志内容的配置、修改工作，现在改为在多个复帧周期内完成所有时隙、所有子时隙的客户标志内容的配置。在子时隙模式时，SSN字段给出本复帧周期属于那个子时隙，在calendar表项中对应时隙位置上配置内容为SSN字段对应的子时隙的客户信息，一个复帧中完成一个子时隙的配置活动，通过多个复帧周期完成所有子时隙的客户标志内容配置。当所有子时隙的配置信息都传递完后，发送端反转CR比特通知接收端需要切换calendar表项，接收端确定所有子时隙的配置信息内容，然后回送CA应当信息，发送端在多个FlexE帧周期中最后一帧中反转C比特，在下一个帧(FlexE帧周期中的第一帧)中正式切换工作calendar表项和备用calendar表项的状态，实现子时隙的配置内容的修改。
参见图16，本发明另一个实施例提出了一种传输客户业务的装置，包括子时隙确定模块1601和客户业务传输模块1602。
子时隙确定模块1601，设置为根据客户业务的带宽确定承载客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于 或等于1的整数。
客户业务传输模块1602，设置为在确定的子时隙上承载所述客户业务进行发送；或者，在确定的子时隙上接收所述客户业务。
在本发明实施例中，还可以包括子时隙划分模块1603。
子时隙划分模块1603，设置为确定所述时隙中需要划分子时隙的时隙；将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块。
一实施例中，子时隙划分模块1603是设置为采用以下方式实现所述将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块：将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块按照均匀间插的方式进行划分得到N组所述数据块，间插周期为N。
一实施例中，所述(m+1)个开销块之间包括的所有数据块被统一编码。
一实施例中，当所述(m+1)个开销块所属的帧数大于或等于2时，采用以下任一种方式表示所述子时隙的覆盖帧范围：
采用所述帧的开销块中的保留字段中的部分或全部比特位表示所述子时隙的覆盖的帧的编号；
采用所述帧的开销块中的保留字段中的部分或全部比特位表示当前帧或下一帧为所述子时隙的覆盖的帧的预定帧，通过软件配置方式、管理通道传递方式或网管命令传递方式确定所述子时隙的总覆盖帧数，预定帧包括以下任意一个：第一帧、最后一帧。
一实施例中，所述子时隙所承载的客户业务的切换时刻位于所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
一实施例中，所述开销块中的主时隙配置表和备时隙配置表的切换时刻位于帧边界，或所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
一实施例中，在所述(m+1)个开销块所属的帧的最后一帧中反转C比特，在下一个所述(m+1)个开销块所属的帧的第一帧中切换所述主时隙配置表和所述备时隙配置表的状态。
一实施例中，可以采用以下任一种方式表示客户标志内容：
采用所述开销块中的时隙配置表分割成的第一部分表示所述时隙是否参与划分成子时隙模式，采用所述开销块中的时隙配置表分割成的第二部分表示所 述时隙或所述子时隙的客户标志内容；
采用所述开销块中的时隙配置表的保留字段的部分比特表示所述时隙是否参与划分成子时隙模式；
通过软件设置方式、或管理通道传递方式、或网管命令传递方式确定参与划分成子时隙模式的时隙编号。
一实施例中，采用所述开销块中的时隙配置表的保留字段的部分比特表示所述开销块所属的复帧中的客户标志内容所属的子时隙的编号。
一实施例中，采用所述开销块中的CR和CA比特实现所述子时隙的客户标志内容的配置。
上述传输客户业务的装置的具体实现过程与前述实施例的传输客户业务的方法的实现过程相同，这里不再赘述。
本发明另一个实施例提出了一种传输客户业务的装置，包括处理器和计算机可读存储介质，所述计算机可读存储介质中存储有指令，当所述指令被所述处理器执行时，实现上述任一种传输客户业务的方法。
本发明另一个实施例提出了一种计算机可读存储介质，其上存储有计算机程序，所述计算机程序被处理器执行时实现上述任一种传输客户业务的方法的步骤。
参见图17，本发明另一个实施例提出了一种传输客户业务的系统，包括第一节点1701和第二节点1702。
第一节点1701，设置为根据客户业务的带宽确定承载客户业务的子时隙，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的子时隙上承载所述客户业务进行发送。
第二节点1702，设置为根据客户业务的带宽确定承载客户业务的子时隙；其中，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的子时隙上接收所述客户业务。
在本发明实施例中，第一节点1701和/或第二节点1702还设置为：确定所述时隙中需要划分子时隙的时隙；将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块。
一实施例中，第一节点1701和/或第二节点1702是设置为：采用以下方式 实现所述将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到N组数据块：将需要划分子时隙的时隙对应的(m+1)个开销块之间包括的所有数据块按照均匀间插的方式进行划分得到N组所述数据块，间插周期为N。
一实施例中，所述(m+1)个开销块之间包括的所有数据块被统一编码。
一实施例中，当所述(m+1)个开销块所属的帧数大于或等于2时，第一节点1701和/或第二节点1702采用以下任一种方式表示所述子时隙的覆盖帧范围：
采用所述帧的开销块中的保留字段中的部分或全部比特位表示所述子时隙的覆盖的帧的编号；
采用所述帧的开销块中的保留字段中的部分或全部比特位表示当前帧或下一帧为所述子时隙的覆盖的帧的预定帧，通过软件配置方式、管理通道传递方式或网管命令传递方式确定所述子时隙的总覆盖帧数，预定帧包括以下任意一个：第一帧、最后一帧。
一实施例中，所述子时隙所承载的客户业务的切换时刻位于所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
一实施例中，所述开销块中的主时隙配置表和备时隙配置表的切换时刻位于帧边界，或所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
一实施例中，在所述(m+1)个开销块所属的帧的最后一帧中反转C比特，在下一个所述(m+1)个开销块所属的帧的第一帧中切换所述主时隙配置表和所述备时隙配置表的状态。
一实施例中，第一节点1701和/或第二节点1702采用以下任一种方式表示客户标志内容：
采用所述开销块中的时隙配置表分割成的第一部分表示所述时隙是否参与划分成子时隙模式，采用所述开销块中的时隙配置表分割成的第二部分表示所述时隙或所述子时隙的客户标志内容；
采用所述开销块中的时隙配置表的保留字段的部分比特表示所述时隙是否参与划分成子时隙模式；
通过软件设置方式、或管理通道传递方式、或网管命令传递方式确定参与划分成子时隙模式的时隙编号。
一实施例中，第一节点1701和/或第二节点1702采用所述开销块中的时隙配置表的保留字段的部分比特表示所述开销块所属的复帧中的客户标志内容所 属的子时隙的编号。
一实施例中，第一节点1701和/或第二节点1702采用所述开销块中的CR和CA比特实现所述子时隙的客户标志内容的配置。
上述传输客户业务的装置的实现过程与前述实施例的传输客户业务的方法的实现过程相同，这里不再赘述。
本领域普通技术人员可以理解，上文中所公开方法中的全部或某些步骤、系统、装置中的功能模块/单元可以被实施为软件、固件、硬件及其适当的组合。在硬件实施方式中，在以上描述中提及的功能模块/单元之间的划分不一定对应于物理组件的划分；例如，一个物理组件可以具有多个功能，或者一个功能或步骤可以由若干物理组件合作执行。某些组件或所有组件可以被实施为由处理器，如数字信号处理器或微处理器执行的软件，或者被实施为硬件，或者被实施为集成电路，如专用集成电路。这样的软件可以分布在计算机可读介质上，计算机可读介质可以包括计算机存储介质(或非暂时性介质)和通信介质(或暂时性介质)。如本领域普通技术人员公知的，术语计算机存储介质包括在用于存储信息(诸如计算机可读指令、数据结构、程序模块或其他数据)的任何方法或技术中实施的易失性和非易失性、可移除和不可移除介质。计算机存储介质包括但不限于随机存取存储器(Random Access Memory，RAM)、只读存储器(Read-Only Memory，ROM)、带电可擦可编程只读存储器(Electrically Erasable Programmable Read-Only Memory，EEPROM)、闪存或其他存储器技术、光盘只读存储器(Compact Disc Read-Only Memory，CD-ROM)、数字多功能盘(Digital Versatile Disc，DVD)或其他光盘存储、磁盒、磁带、磁盘存储或其他磁存储装置、或者可以用于存储期望的信息并且可以被计算机访问的任何其他的介质。此外，本领域普通技术人员公知的是，通信介质通常包含计算机可读指令、数据结构、程序模块或者诸如载波或其他传输机制之类的调制数据信号中的其他数据，并且可包括任何信息递送介质。

Claims (15)

  1. 一种传输客户业务的方法，包括：
    根据客户业务的带宽确定承载所述客户业务的子时隙，其中，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；
    在确定的所述子时隙上承载所述客户业务进行发送；或者，在确定的所述子时隙上接收所述客户业务。
  2. 根据权利要求1所述的方法，其中，所述根据客户业务的带宽确定子时隙之前，该方法还包括：
    确定所述时隙中需要划分子时隙的时隙；
    将所述需要划分子时隙的时隙对应的所述(m+1)个开销块之间包括的所有数据块进行平均划分得到所述N组数据块。
  3. 根据权利要求2所述的方法，其中，所述将所述需要划分子时隙的时隙对应的所述(m+1)个开销块之间包括的所有数据块进行平均划分得到所述N组数据块，包括：
    将所述需要划分子时隙的时隙对应的所述(m+1)个开销块之间包括的所有数据块按照均匀间插的方式进行划分得到所述N组所述数据块，其中，间插周期为N。
  4. 根据权利要求1～3任一项所述的方法，其中，所述(m+1)个开销块之间包括的所有数据块被统一编码。
  5. 根据权利要求1～3任一项所述的方法，其中，在所述(m+1)个开销块所属的帧数大于或等于2的情况下，采用以下任一种方式表示所述子时隙的覆盖帧范围：
    采用所述帧的开销块中的保留字段中的部分或全部比特位表示所述子时隙的覆盖的帧的编号；
    采用所述帧的开销块中的保留字段中的部分或全部比特位表示当前帧或下一帧为所述子时隙的覆盖的帧的预定帧，通过软件配置方式、管理通道传递方式或网管命令传递方式确定所述子时隙的总覆盖帧数，其中，所述预定帧包括以下任意一个：第一帧、最后一帧。
  6. 根据权利要求1～3任一项所述的方法，其中，所述子时隙所承载的客户业务的切换时刻位于所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
  7. 根据权利要求1～3任一项所述的方法，其中，所述(m+1)个开销块中的 主时隙配置表和备时隙配置表的切换时刻位于帧边界，或所述(m+1)个开销块所属的帧的帧循环周期的边界位置。
  8. 根据权利要求7所述的方法，其中，在所述(m+1)个开销块所属的帧的最后一帧中反转C比特，在下一个所述(m+1)个开销块所属的帧的第一帧中切换所述主时隙配置表和所述备时隙配置表的状态。
  9. 根据权利要求1～3任一项所述的方法，其中，采用以下任一种方式表示客户标志内容：
    采用所述(m+1)个开销块中的时隙配置表分割成的第一部分表示所述时隙是否参与划分成子时隙模式，采用所述(m+1)个开销块中的时隙配置表分割成的第二部分表示所述时隙或所述子时隙的客户标志内容；
    采用所述(m+1)个开销块中的时隙配置表的保留字段的部分比特表示所述时隙是否参与划分成所述子时隙模式；
    通过软件设置方式、或管理通道传递方式、或网管命令传递方式确定参与划分成所述子时隙模式的时隙的编号。
  10. 根据权利要求9所述的方法，其中，采用所述(m+1)个开销块中的时隙配置表的保留字段的部分比特表示所述(m+1)个开销块所属的复帧中的客户标志内容所属的子时隙的编号。
  11. 根据权利要求9所述的方法，其中，采用所述(m+1)个开销块中的CR比特和CA比特实现所述子时隙的客户标志内容的配置。
  12. 一种传输客户业务的装置，包括：
    子时隙确定模块，设置为根据客户业务的带宽确定承载所述客户业务的子时隙，其中，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；
    客户业务传输模块，设置为在确定的所述子时隙上承载所述客户业务进行发送；或者，在确定的所述子时隙上接收所述客户业务。
  13. 一种传输客户业务的装置，包括处理器和计算机可读存储介质，所述计算机可读存储介质中存储有指令，其中，当所述指令被所述处理器执行时，实现如权利要求1～11任一项所述的传输客户业务的方法。
  14. 一种计算机可读存储介质，存储有计算机程序，其特征在于，所述计算机程序被处理器执行时实现如权利要求1～11任一项所述的传输客户业务的方 法的步骤。
  15. 一种传输客户业务的系统，包括：
    第一节点，设置为根据客户业务的带宽确定承载所述客户业务的子时隙，其中，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的所述子时隙上承载所述客户业务进行发送；
    第二节点，设置为根据客户业务的带宽确定承载所述客户业务的子时隙；其中，所述子时隙对应的数据块包括：对时隙对应的(m+1)个开销块之间包括的所有数据块进行平均划分得到的N组数据块中的一组数据块，m、N为大于或等于1的整数；在确定的所述子时隙上接收所述客户业务。
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