WO2019174406A1 - Procédé et appareil de transmission de données, dispositif de réseau, et support de stockage - Google Patents

Procédé et appareil de transmission de données, dispositif de réseau, et support de stockage Download PDF

Info

Publication number
WO2019174406A1
WO2019174406A1 PCT/CN2019/072555 CN2019072555W WO2019174406A1 WO 2019174406 A1 WO2019174406 A1 WO 2019174406A1 CN 2019072555 W CN2019072555 W CN 2019072555W WO 2019174406 A1 WO2019174406 A1 WO 2019174406A1
Authority
WO
WIPO (PCT)
Prior art keywords
sub
block
slot
information
code
Prior art date
Application number
PCT/CN2019/072555
Other languages
English (en)
Chinese (zh)
Inventor
刘峰
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2019174406A1 publication Critical patent/WO2019174406A1/fr

Links

Images

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/826—Involving periods of time
    • 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
    • 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
    • H04L1/0061—Error detection codes
    • 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
    • H04L1/0067—Rate matching

Definitions

  • the present application relates to the field of network technologies, but is not limited to the field of network technologies, and in particular, to a data transmission method and apparatus, a network device, and a storage medium.
  • the interface bandwidth speed of network devices is increased from 10M (unit: bit/second, bit/s) to 100M bit/s, and 1G bit/s, 10G bit/ is increased.
  • the bandwidth speed of 100G bit/s has been reached at present, and a large number of optical modules of 100G bit/s have been applied on the market.
  • the physical layer defined by the current FlexE protocol is 100G bit/s, and 20 time slots are defined on the physical layer of 100G bit/s.
  • the corresponding bandwidth of each time slot is 5G bit/s, if a customer's information transmission volume Less than 5G bit/s and occupying one time slot separately will inevitably lead to waste of network transmission resources.
  • the embodiments of the present application are expected to provide a data transmission method and apparatus, a network device, and a storage medium, which can at least be used to alleviate the seriousness of the problem of resource waste.
  • an embodiment of the present application provides a data transmission method, including:
  • Adding a code block to the sub-slot where the code block includes: an information block and an identification block, where the information block includes service data of the customer service; and the identification block includes division information of the time slot;
  • a data transmission method including:
  • a data transmission apparatus of the embodiment of the present application includes:
  • a dividing module configured to divide a time slot into a plurality of sub-time slots according to information of the customer service
  • Adding a module configured to add a code block in the sub-slot, where the code block includes: an information block and an identification block, where the information block includes service data of the customer service; and the identifier block includes the time Information on the division of the gap;
  • a component module configured to utilize a code block of the sub-slot to form a code stream of the time slot
  • a sending module configured to send the code stream.
  • a data transmission apparatus of the embodiment of the present application includes:
  • a receiving module configured to receive a code stream
  • a determining module configured to determine slot division information according to the identifier block extracted in the code stream
  • an extracting module configured to extract, according to the split information, an information block corresponding to a customer service from a sub-time slot of the time slot.
  • a fifth aspect of the present disclosure provides a network device, including:
  • a transceiver configured to send and receive information
  • a memory configured to store information
  • a processor coupled to the transceiver and the memory, respectively, configured to control information transmission and reception of the transceiver and information storage of the memory by executing computer executable code stored in the memory, and implementing the first aspect Or the second aspect of the data transmission method.
  • the computer storage medium of the present application wherein the computer storage medium stores computer executable code, and after the computer executable code is executed, the data transmission method of the first aspect or the second aspect can be implemented. .
  • the data transmission method and device, the network device and the storage medium provided by the embodiments of the present application split a time slot into multiple sub-time slots, and the bandwidth of the sub-slot is smaller than the bandwidth of the time slot, when the service data is transmitted.
  • the time slot may be the minimum scheduling unit, so that the customer service whose transmission rate is less than the bandwidth of one time slot may not need to occupy one time slot separately, so that the transmission rate does not need to consume multiple client services of the bandwidth corresponding to one time slot.
  • the sub-slots can be occupied and share one time slot, thereby avoiding the waste of resources caused by the minimum scheduling unit of the resources being the time slots, and improving the effective utilization of resources.
  • FIG. 1A is a schematic flowchart of a first data transmission method according to an embodiment of the present application.
  • FIG. 1B is a schematic flowchart of a second data transmission method according to an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a service for transmitting 400 Gbit/s services by using four 100 Gbit/s optical modules according to an embodiment of the present disclosure
  • FIG. 3 is a schematic structural diagram of an identifier block according to an embodiment of the present disclosure.
  • FIG. 4A is a schematic flowchart of a third data transmission method according to an embodiment of the present application.
  • 4B is a schematic flowchart of a fourth data transmission method according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of a transmission frame carrying an overhead block according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic diagram of mapping a 400 Gbit/s transmission frame to a 4-channel 100 Gbit/s transmission according to an embodiment of the present disclosure
  • FIG. 10 is a schematic diagram of an overhead frame according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic diagram of a sub-slot mapping to a time slot transmission according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of transmission of a code stream according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of transmission of a time slot multiplexed by a first seed slot according to an embodiment of the present disclosure
  • FIG. 14 is a schematic diagram of receiving a time slot of a first seed slot multiplexed according to an embodiment of the present disclosure
  • FIG. 15 is a schematic diagram of content of an identifier block according to an embodiment of the present application.
  • FIG. 16 is a schematic diagram of transmission of a time slot multiplexed by a second seed slot according to an embodiment of the present disclosure
  • FIG. 17 is a schematic diagram of content of another identifier block according to an embodiment of the present application.
  • FIG. 18 is a schematic diagram of receiving a time slot of a second seed slot multiplexing according to an embodiment of the present application.
  • FIG. 19 is a schematic diagram of content of another identifier block according to an embodiment of the present application.
  • the embodiment provides a data transmission method, including:
  • Step S110 Divide a time slot into a plurality of sub-time slots according to information of the customer service
  • Step S120 Add a code block in the sub-slot, where the code block includes: an information block and an identification block, where the information block includes service data of the customer service; and the identifier block includes the time slot. Divide information;
  • Step S130 using code blocks of the sub-slots to form a code stream of the time slot;
  • Step S140 Send the code stream.
  • the data transmission method provided by this embodiment may be: a data transmission method applied to a transmitting end, for example, a method applied to a transmitting end in FlexE, and the method follows the FlexE protocol for data transmission.
  • the physical layer of the network defined by the FlexE protocol is 100 Gbit/s
  • 20 time slots are defined on the physical layer of the 100 Gbit/s
  • the corresponding bandwidth of each time slot is 5 Gbit/s, which can be used in the embodiment of the present application.
  • It is called a FlexE protocol slot, and is referred to as a slot.
  • the bandwidth of the time slot is not limited to 5 Gbit/s, and may be 25 Gbit/s or the like.
  • the time slot may be further divided into multiple sub-time slots, and the bandwidth occupied by one of the sub-slots is smaller than the bandwidth occupied by one of the time slots.
  • the step S110 of the embodiment of the present application may include: dividing one of the time slots into a plurality of sub-slots, and in other embodiments, dividing the one of the sub-slots into multiple bandwidths.
  • Subslot For example, one slot includes two types of sub-slots, one type of sub-slots has a bandwidth of A, and another type of sub-slots has a bandwidth of B and A is not equal to B.
  • the 400G bit/s optical module can support a bandwidth of 400G bit/s, but the 400G bit/s optical module is expensive, exceeding the price of four 100G bit/s optical modules, resulting in the lack of 400G bit/s optical modules. Practical application value.
  • the network operator of the FlexE protocol bundles four 100G optical modules to form a 400G bit/s transmission channel, which is equivalent.
  • the transmission speed of a 400G bit/s optical module to reduce the transmission cost of 400G bit/s service.
  • the physical layer of the network is still 100G bit/s.
  • 20 slots are defined on the physical layer of 100G bit/s, and the corresponding bandwidth of each slot is 5G bit/s.
  • the bandwidth of one time slot is 5G bit/s
  • the transmission rate for a single client service is less than 5G bit/s occupying one time slot, which obviously causes waste of bandwidth.
  • the time slot with the bandwidth of 5 Gbit/s is further divided according to the information of the customer service (the transmission rate of the customer service), and the divided sub-timeslot is used as the minimum scheduling of the resource. Units, obviously less than 5G bit/s customer service does not need to occupy a single time slot, thereby reducing the waste of bandwidth resources and improving the effective utilization of resources.
  • the time slot in order to avoid waste of transmission resources caused by occupying at least one time slot by a single client service, the time slot is further divided, so that one time slot is divided into multiple sub-time slots, and thus different. Customer services can share a single time slot, reducing waste of resources.
  • an identification block in addition to the information block carrying the service data, an identification block is added in the sub-slot; the identification block carries the division information of the time slot.
  • the split information of the time slot may include sub-slot information indicating the number of sub-slots divided by the time slot, the bandwidth of the single sub-slot, and/or the resource position.
  • the split information of the time slot may further include: allocation information of sub-time slots of the customer service, for example, indicating the number of sub-time slots occupied by one customer service, the resource location of the occupied sub-time slots, and the like. information.
  • the transmitting end carries the split information in the identifier block and sends the information to the receiving end, so that the receiving end can determine the sub-slot division and allocation of the current time slot according to the identifier block.
  • the information about the customer service may include information such as the number of customer services and the transmission rate of the customer service.
  • the splitting information may include: sub-slot information in which the time slot is divided into sub-slots, and allocation information indicating that the sub-slots are allocated to the customer service, and the like.
  • the method may include: one sub-slot carries at least one identification block.
  • a plurality of identification blocks may also be shared by a plurality of sub-slots that are assigned to the same client service.
  • the information block and the identification block are added in step S120, but the number of the identification blocks and the resource location added by all the sub-time slots are not specifically limited.
  • the information block can be sequentially added to the sub-time slot according to the sequence of the service data of the customer service, which can ensure that the previous service data is in front of the resource in the time domain, facilitating subsequent reception.
  • the terminal sequentially receives the information block according to the sequence of the service data, and simplifies the splicing of the information block of the same client service at the receiving end, and restores the original appearance of the service data.
  • step S130 the information block and the identification block of the plurality of sub-time slots are used, and the code stream of one time slot is formed according to the mapping relationship between the sub-slot and the time slot.
  • the step S130 may include:
  • the step S130 may include: polling each sub-slot, and selecting, from the sub-slots, a code stream corresponding to the selected code block construction time slot in the code block not added to the time slot. It is assumed that one slot includes one sub-slot of equal bandwidth, and the step S130 may include: taking the j-th code block from the i-th sub-slot to form an I*j+i code block in the slot. i is a natural number not less than I; j is a sequence number of the code block in the sub-slot, and the value of j is a natural number starting from "0".
  • the code block of the time slot is sent.
  • one time slot can be shared by multiple client services, which reduces resource waste caused by occupying one time slot of a low-rate single client service, and in this embodiment.
  • an identifier block is added to the sub-slot, and the identifier block carries the division information, which can be used for the receiving end to obtain the division and allocation status of the time slot, thereby obtaining the information block of each customer service.
  • the method further includes:
  • Step S131 insert a free block for rate adjustment between the code blocks of the code stream.
  • the free block may be a code block that does not carry valid data
  • the valid data may include: service data of the foregoing customer service, split information, and other control information for controlling transmission. Since the idle block does not carry the valid information, if a network device does not match the ingress rate and the egress rate, the ingress rate of the network device can be consistent with the egress rate by discarding or adding the free block.
  • a network core device Provider, P
  • P a network core device
  • one or more free blocks can be discarded at the egress, thus reducing the need for the egress.
  • the amount of data transferred, so that the transmission rate of valid data is consistent at the entrance and exit. Due to the discarded free block, the free block is a code block that does not carry valid data, and even if discarded, it will not cause loss of valid data.
  • a free block may be added to the transport stream of the egress to reduce the problem that the code stream of the ingress is slow to cause the code stream to be interrupted.
  • the step S131 may include: inserting a free block in a code stream corresponding to the time slot according to a predetermined interval, for example, inserting the free block in a code block of one time slot according to an equal interval (ie, periodicity), or The free block is inserted in code blocks of one slot at unequal intervals.
  • the predetermined interval may be determined according to a rate adjusted extreme value, for example, determined according to the rate adjusted maximum value, and the rate adjusted maximum value may include: the effective code stream is greatly increased. The value and the maximum value of the deceleration are determined.
  • the insertion of the free block at a predetermined interval is understood to mean that one of the free blocks is inserted every predetermined number of code blocks in the code stream.
  • the reason why the analysis causes the ingress rate and the egress rate of the network device to be adjusted is the time-to-center deviation of the network device.
  • the number of code blocks in which the free blocks are inserted may be determined according to the maximum offset value and the transmission rate of the network device.
  • the code blocks herein may include: free blocks, identification blocks, and information blocks that are already in the code stream.
  • a general information block is a code block carrying service data of a customer service.
  • One of the code blocks may include 66 bits, the code block adopts 64/66 coding, the first 2 bits of the 66 bits are the start identifier bits of the code block, and the remaining 64 bits are content bits, and the content bits may be A bit carrying information content such as service data or division information.
  • the number of bits included in one code block and one type of bit division are limited, but the specific implementation is not limited to this limitation.
  • the insertion of the free block in step S131 enables end-to-end transmission between the transmitting end and the receiving end, and transparent transmission of the intermediate transmission device between the transmitting end and the receiving end, and the intermediate transmission device is transparent.
  • the transit time can use the free block to adjust the rate of the ingress rate and the egress rate. This prevents the intermediate transmission device from deleting the information block or the identification block and the receiving end cannot correctly recover the service data.
  • step S120 may be included in step S120: replacing the free block in the sub-slot with the identification block.
  • a time slot may have its predetermined format that defines in advance which resource locations are used to carry information blocks and which resource locations are used to carry free blocks for rate adjustment. If a time slot is divided into multiple sub-time slots, the resource locations corresponding to the free blocks are also distributed to the respective sub-time slots. In order to transmit data according to a predetermined format and improve the effective transmission of the single-slot, in this embodiment. Instead, the identification block is carried by the information block that is intended to carry the service data, instead of replacing the free block with the identification block.
  • the identifier block is used to replace the free block in the sub-slot. If there is no free block in the sub-slot (for example, the free block has been replaced by another code block), then the sub-slot can be reserved at this time.
  • the resource location of the information block carries the identification block, that is, the partial information block in the sub-slot is replaced by the identification block; in some embodiments, after the addition of the identification block is completed in the sub-slot, the sub-slot is implemented. It is no longer necessary to carry a free block that may be added or deleted in the code stream with subsequent time slots.
  • step S131 the rate adjustment is performed by inserting a free block.
  • the number of free blocks specifically inserted in one slot in step S131 is not necessarily, and may be determined according to specific network transmission status and the like.
  • any one of the free blocks may be added in step S131; if the part in the sub-slot is idle in step S120 The block is replaced with an identification block, and another free block different from the free block of the sub-slot is added in step S131.
  • the free block that is included in the sub-slot can be the first type of free block
  • the free block that is specifically inserted in step S131 can be the second type of free block, the first type of free block and the second type of free block.
  • the flag can be carried in a free block.
  • the free block inserted in step S131 may be any type of free block, and then the code stream sent by the sender is also There is only one free block. If all the free blocks in the sub-slot are replaced by the identification block, the free block inserted in the subsequent intermediate device may be the same type of free block as the free block inserted by the transmitting end, so that the code stream is received at the subsequent receiving end. After all the free blocks are removed, the initial state of the code stream corresponding to the time slot can be restored, and the position of the code block of each sub-slot in the entire time slot stream is not disturbed, which can facilitate the receiving end.
  • the rate adjustment can be performed by adding or deleting the second free block after forming the code stream corresponding to the time slot; the receiving end is in the second class of the wave stream. After the null, the code stream corresponding to the time slot can be restored to the initial state between the second type of free blocks, and the position of the code block of each sub-slot in the code stream corresponding to the time slot can also be ensured. change.
  • a part of the free block in the sub-slot can be replaced by the identification block, and the remaining part can be replaced with other types of code blocks other than the free block, so that it can be arbitrarily added in step S131 and the intermediate device.
  • Free block For example, if P free blocks are set in one sub-slot, and S of them are replaced by identification blocks, P-S free blocks can be replaced with other types of control blocks, and the control block can be a code block carrying control information. In summary, it is sufficient to ensure that there are no free blocks in the sub-slot that may be added or deleted.
  • the transmitting end may be deleted or replaced by the free block in the sub-slot, so that the code stream of the time slot does not include the subsequently inserted free block for adjusting the rate.
  • the free block replacement here may include replacing with a non-free block or replacing with a different type of free block of the free block after forming the code stream.
  • the non-free block may include: a plurality of code blocks carrying valid information, such as the foregoing identification block and control block.
  • the identification block carries at least one of the following information:
  • sub-slot identifier which is used to indicate a resource location of the sub-slot;
  • the sub-slot identifier may be a sub-slot number and/or a sub-slot name;
  • An empty identifier configured to indicate whether the sub-timeslot carries the service data
  • a bearer type flag which is used to indicate that the sub-slot carries all service data or part of service data of a single client service; if a client service is all carried in the sub-slot, the bearer type flag is the first value; if the customer service
  • the bearer type flag may be the second value, and the first value and the second value are different.
  • the bearer type flag may correspond to one or more bits, and if it corresponds to 1 bit, the two values of "1" and "0" of the bit correspond to the first value. And the second value;
  • the total number of sub-slots of the client is used to indicate the number of sub-slots occupied by the client service; the sub-slot information here includes the number of sub-slots occupied by a single client service. For example, the current service of customer A and the service of customer B share one time slot, the service of customer A occupies three sub-time slots of 1G, and the service of customer B occupies two sub-time slots of 1G, then the total customer The number of sub-slots indicates that customer A occupies 3 sub-slots, and customer B occupies 2 sub-slots.
  • the identification block is an identification block in a subslot occupied by the service of the client A, the number of subslots occupied by the service of the client A indicated by the total number of subslots of the client; The identification block in the sub-slot occupied by the service of the customer B. At this time, the number of sub-time slots occupied by the service of the customer B indicated by the total number of sub-slots of the customer.
  • the customer service may be classified according to customers, or may be classified according to service types. If the customer differentiates, the business of different customers corresponds to different customer services; if the business type is divided, the different services of the same customer will correspond to different customer services.
  • the intra-subslot time slot identifier is used to indicate the time slot identifier of the sub-slot in all sub-time slots occupied by a single client service.
  • the intra-subslot time slot identifier includes: a sub-slot number in the client or a sub-slot name in the client.
  • the customer service 1 occupies 3 sub-timeslots of 5 time slots in one time slot; the sub-slot time number in the time slot is 3, but in the 3 sub-time slots occupied by the client service
  • the slot number can be any one of 0, 1, or 2.
  • the sub-slot identifier in the client may be a splicing of information blocks for a subsequent client to perform a single client service according to the sub-slot number in the client, thereby obtaining the received information in the correct order.
  • the verification information is used to perform verification of the identification block.
  • the verification information may be various types of verification information, and the verification information may include: a verification code, for example, a Cyclic Redundancy Check (CRC), the sea.
  • CRC Cyclic Redundancy Check
  • the identifier block carries a check code
  • the check code can be used to check other information except the check information in the identifier block, and ensure the correctness of the content of the identifier block received by the receiving end.
  • the check code can be divided into: an error checking code and an error correcting code; if the error checking code can only determine whether there is a transmission error, if the error occurs, the data can be acquired again by resending the request, and the error correction is performed.
  • the code comes with a certain error correction capability. If a transmission error is found, error correction can be performed, so that even if a transmission error occurs, the correct transmission content can be obtained by error correction, thereby reducing the transmission.
  • the verification information may select an error correction code having error correction capability such as CRC.
  • the CRC may be further divided into a 4-bit CRC4, an 8-bit CRC8, a 16-bit CRC16, and a 32-bit CRC32.
  • CRC4 or CRC8 may be selected as the check information, and the remaining content of the identifier block may be verified by using a CRC4 algorithm or a CRC8 algorithm.
  • secure transmission of information in the identification block may be implemented to prevent tampering.
  • the identification block is an O code block.
  • FIG. 3 is a schematic diagram of constructing the identification block by using a code block format of an O code block.
  • the identifier block adopts a 66-bit code block structure.
  • the O code block in the standard is used, and the O code block is expanded.
  • the O code block is a control block, the first two bits are "10", which is used to indicate the type of the code block, and then one byte (8 bits) is 0x4B (4B is hexadecimal), followed by three
  • the data contents of the bytes are Data 1, Data 2, and Data 3.
  • the sequence code feature of the O code At the position of 34 to 37 bits, it is the sequence code feature of the O code, and "0" can be used as the sequence code feature to indicate that the data content of the first three bytes conveys the status of the customer failure information.
  • the serial code feature is extended, and a "C" (hexadecimal C, ie, decimal 12) flag is used to indicate that it is an identification block, and other contents may be used in actual applications. All subsequent contents are all filled with "0".
  • the step S110 may include:
  • one slot includes the number of sub-slots and the resource location of the sub-slots.
  • the transmission rate of a single client service and the number of customer services determine the total transmission rate required.
  • the total transmission rate determines that it needs to be carried by one time slot. If one time slot is exceeded, multiple time slots may be required to carry It may be necessary to further determine the bearer of the carried customer service according to each time slot.
  • the bandwidth corresponding to the sub-timeslot is determined from the maximum effective transmission of the transmission resources of the time slot.
  • one customer service to be transmitted is three, and the transmission rates of three customer services are 0.8 Gbit/s, 2 Gbit/s, and 2 Gbit/s, respectively.
  • the bandwidth of a time slot is 5 Gbit/s
  • one time slot can be divided into five sub-timeslots of 1 Gbit/s, and the transmission rate is 0.8 Gbit/s, occupying one sub-timeslot, and the transmission rate is occupied by 2 Gbit/s. 2 sub-slots.
  • the 5 Gbit/s time slot can be divided into four sub-timeslots with a bandwidth of 1.25 Gbit/s, and the transmission rate.
  • the customer service of 1.25 Gbit/s occupies one sub-slot, and the customer service with a transmission rate of 2.5 Gbit/s occupies 2 sub-timeslots.
  • the number of sub-slots divided in step S110 of the present embodiment is generally not less than the number of client services transmitted in one time slot.
  • the minimum unit of data transmission may be one code block.
  • the bandwidth occupied by multiple sub-time slots divided by one time slot is The bandwidth occupied between equal or different sub-timeslots is an integer multiple.
  • the transmission rates of the three client services are 0.8 Gbit/s, 2 Gbit/s, and 2 Gbit/s, respectively, and a time slot with a bandwidth of 5 Gbit/s can be divided into three sub-time slots, and the three sub-time slots.
  • the bandwidth of the slot is 1 Gbit/s, 2 Gbit/s and 2 Gbit/s, respectively; obviously the bandwidth of different sub-slots is an integer multiple.
  • the code stream may be formed according to the bandwidth selection code block of each sub-slot. If the time slots of the sub-slots included in one time slot are equal, Polling each sub-slot in turn, if a code stream of a time slot is selected from the i-th sub-slot, and if the i-th sub-slot is not the last sub-slot, the next time from the i+1th Each sub-slot selects a code block to form a code stream of the time slot. If the ith sub-time slot is the last sub-time slot, the next time a code block is selected from the first sub-time slot to form a code stream of the time slot. .
  • a time slot includes a plurality of sub-slots having unequal bandwidths, for example, the bandwidth of the first type of sub-slots is N times the bandwidth of the second type of sub-slots, if it is currently determined to select code blocks from the first type of sub-slots And selecting, at one time, N code blocks to form a code stream of the time slot, and if it is currently determined to select a code block from the second type of sub-time slots, selecting one code block from the second type of sub-time slots to form the time slot.
  • the stream of code If the bandwidth of the sub-slots divided by one slot is not equal, the ratio of the number of code blocks selected from the corresponding different sub-slots is equal to the bandwidth ratio of each sub-slot.
  • the embodiment provides a data transmission method, including:
  • Step S210 receiving a code stream
  • Step S220 Determine, according to the identifier block extracted in the code stream, the division information of the time slot;
  • Step S230 Extract, according to the split information, information blocks corresponding to customer services from sub-time slots of the time slot.
  • the method provided in this embodiment may be a data transmission method applied to the receiving end.
  • the receiving end can be a network device in the FlexE.
  • the code stream is received in step S210, and the code stream includes a plurality of code blocks in which the identification block is included.
  • the identifier block may be extracted according to the start identifier of the code block or the identifier of the code block type.
  • the division information of the time slot may be extracted from the identification block, and the division information includes: sub-slot information included in one slot and/or allocation information of the sub-slot.
  • the information block corresponding to the customer service may be extracted from each sub-time slot of the time slot according to the allocation information.
  • the resource location occupied by the information block corresponding to each client service can be known, and the number of information blocks occupied by one client service can be known, so that the information block is extracted and combined in the corresponding resource location. , recover all the information blocks of a customer's business.
  • one time slot is divided into multiple sub-time slots, and one time slot can be used for transmission of service data of two or more customer services, thereby reducing waste and smoothly solving by introducing the identification block.
  • the method further includes:
  • Step S211 Freeing the free block for adjusting the rate from the code stream.
  • the free block may be a code block added by the transmitting end or added by the intermediate transmitting node and used to adjust the transmission rate, and the free block may be stripped. In this embodiment, the free block may be stripped, and the subsequent block of the free block may be reduced. Interference with the processing of information blocks.
  • the free block stripped in this step may be a free block added in step S131 of the foregoing embodiment and a free block added by the intermediate device at the time of transmission.
  • the free block that is included in the sub-slot can be the first type of free block
  • the free block that is specifically inserted in step S131 can be the second type of free block and the second type of free block that the intermediate device joins.
  • Step S211 may be performed at any position between step S210 and step S230.
  • step S211 may be performed synchronously with step S220, or step S211 may be performed first, then step S220 may be performed, or may be performed before step S220, only need to be ensured.
  • Step S211 may be performed before step S230.
  • the identifier block carries at least one of the following information: a total number of sub-timeslots for indicating the number of sub-slots included in one of the time slots; and a sub-slot identifier for indicating the sub-timeslot
  • the resource location the no-load identifier is used to indicate whether the sub-timeslot carries the service data; the bearer type flag is used to indicate that all service data or part of service data of the single client service is carried in the sub-slot;
  • the number of slots is used to indicate the number of sub-slots occupied by the client service; the sub-slot identifier in the client is used to indicate the slot identifier of all sub-time slots occupied by the sub-slot in a single client service; the verification information is used for performing The verification of the identification block.
  • the identifier block carries the check information, in order to avoid the transmission of the identifier block or the malicious tampering.
  • the step S220 may include: performing verification on the identifier block by using the verification information in the identifier block; if the identifier block is verified, extracting at least the following from the identifier block. a: a total number of sub-slots, which is used to indicate the number of sub-slots included in the time slot; a sub-slot identifier, which is used to indicate the resource location of the sub-slot; and a no-load identifier, which is used to indicate whether the sub-timeslot is carried.
  • the service data; the bearer type flag is used to indicate that all the service data or part of the service data of the single client service is carried in the sub-slot; the total number of sub-slots of the customer is used to indicate the sub-slot information occupied by the single client service;
  • the intra-subslot time slot identifier is used to indicate the time slot identifier of the sub-slot in all sub-time slots occupied by a single client service.
  • the identification block passes the check, it indicates that the identification block does not have a transmission error or is maliciously tampered with, or the transmission error or malicious tampering has been corrected, and the division information currently extracted from the identification block is correct, and can be used to guide the receiving end. Extraction of information blocks and splicing of information blocks for different customer services.
  • the step S230 may include: determining, according to the split information, a number of sub-slots included in one slot and a resource location of the sub-slot; stripping the identifier from the sub-slot Block, get the information block corresponding to the customer's business.
  • the resource location may be a time resource location, for example, the bandwidth of one slot is 5 Gbit/s, and is divided into 5 sub-slots, and 1 sub-slot in one slot of one slot.
  • the time slot corresponds to a transmission time of 0.2 seconds.
  • the transmission time of the 0.2 second transmission may be continuously distributed in a 0.2 second of 1 second. It may also be divided into multiple sub-time units distributed in the 1 second, for example, 1 sub-slot.
  • Including A code blocks the transmission duration occupied by one code block is bs, and the resource position of one sub-slot can be composed of A bs, which can be distributed in different time domain positions within 1 second, these time domains
  • the location is one of the foregoing resource locations. The above is only an explanation of the location of the resource. Any specific implementation of the time slot according to the embodiment of the present application may be interpreted as a sub-slot. Explanation.
  • this embodiment provides a data transmission apparatus, including:
  • the dividing module 110 is configured to divide a time slot into multiple sub-time slots according to information of the customer service;
  • the adding module 120 is configured to add a code block in the sub-slot, where the code block includes: an information block and an identification block, where the information block includes service data of the customer service; the identifier block includes the Division information of time slots;
  • the component module 130 is configured to use the code block of the sub-slot to form a code stream of the time slot;
  • the sending module 140 is configured to send the code stream.
  • the data transmission apparatus can be applied to a transmitting end, for example, to a transmitting end of a flexible Ethernet.
  • the partitioning module 110, the adding module 120, the component module 130, and the sending module 140 may each correspond to a program module, and the program module may include various computer executable programs, and the computer executable program may include: a source program and/or Target program, etc. If the processor executes the above-mentioned program module, the division of the above-mentioned time slot, the addition of the code block in the sub-slot, the composition of the code stream of a single time slot, and the transmission of the code stream can be realized.
  • the apparatus further includes: an insertion module, which is also a program module, configured to insert a free block for rate adjustment between the code blocks of the code stream; the sending module 140, Specifically, it is used to send a code stream in which the free block is inserted.
  • an insertion module which is also a program module, configured to insert a free block for rate adjustment between the code blocks of the code stream
  • the sending module 140 Specifically, it is used to send a code stream in which the free block is inserted.
  • the insertion module is configurable to insert one of the free blocks every predetermined number of code blocks in the code stream. For example, if the bandwidth of one slot is 5 Gbit/s, a predetermined number of 5,000 blocks or slightly less than 5000 blocks can be inserted into a free block for rate adjustment.
  • the adding module 120 can be configured to replace a free block in the sub-slot with the identification block.
  • the identifier block carries at least one of the following information: a total number of sub-timeslots for indicating the number of sub-slots included in one of the time slots; and a sub-slot identifier for indicating the sub-timeslot
  • the resource location the no-load identifier is used to indicate whether the sub-timeslot carries the service data; the bearer type flag is used to indicate that all service data or part of service data of the single client service is carried in the sub-slot;
  • the number of slots is used to indicate the number of sub-slots occupied by the client service; the sub-slot identifier in the client is used to indicate the slot identifier of all sub-time slots occupied by the sub-slot in a single client service; the verification information is used for performing The verification of the identification block.
  • the identification block is an O code block; that is, the code block format of the identification block adopts a code block format of an O code block.
  • the O code block is a type of the control code block.
  • the receiving end traverses the type identifier of the code block to extract the control code block first. If the identifier block is constructed in the format of the O code block, the receiving is performed.
  • the terminal can select the identification block according to the normal code stream processing order, quickly obtain the division information, complete the determination of the information block of each subsequent customer service, and not only has the characteristics of the information block extraction speed block of each customer service, but also has the same The compatibility of the prior art is strong.
  • the partitioning module 110 is configured to determine, according to the number of customer services and the transmission rate of a single client service, that one slot includes a number of sub-slots and a resource location of the sub-slots.
  • the embodiment provides a data transmission apparatus, including:
  • the receiving module 210 is configured to receive a code stream
  • the determining module 220 is configured to determine split information of the time slot according to the identifier block extracted in the code stream;
  • the extracting module 230 is configured to extract, according to the split information, information blocks corresponding to customer services from sub-time slots of the time slot.
  • the data transmission device is applicable to a receiving end, for example, a receiving device applicable to FlexE.
  • the receiving module 210, the determining module 220, and the extracting module 230 may each correspond to a program module, and the program module may include various computer executable programs, and the computer executable program may include: a source program and/or a target program. If the processor executes the above program module, the above-mentioned code stream reception, the determination of the division information, and the extraction of the information block can be realized.
  • the apparatus further includes:
  • the first stripping module is configurable to strip out free blocks for adjusting the rate from the code stream.
  • the determining module 220 is configured to check the identification block by using the verification information in the identification block; if the identification block passes the verification, extract from the identification block. At least one of the following: a total number of sub-slots for indicating the number of sub-slots included in one of the slots; a sub-slot identifier for indicating a resource location of the sub-slot; and an empty identifier for indicating the sub-slot Whether the time slot carries the service data; the bearer type flag is used to indicate that all the service data or part of the service data of the single client service is carried in the sub-slot; the total number of sub-slots of the client is used to indicate the sub-servicing of the single client service.
  • the time slot information is used to indicate the time slot identifier in the sub-slots of all sub-time slots occupied by the single client service.
  • the extracting module 230 may be configured to determine, according to the splitting information, a number of sub-slots included in one slot and a resource location of the sub-slot; and strip out the sub-slot The identification block is obtained, and the information block corresponding to the customer service is obtained.
  • the embodiment provides a network device, including:
  • the transceiver 310 is configured to send and receive information
  • the memory 320 is configured to store information
  • the processor 330 is respectively connected to the transceiver 310 and the memory 320, and is configured to control information transmission and reception of the transceiver 310 and information storage of the memory 320 by executing computer executable code stored in the memory 320. And executing one or more data transmission methods applied to the transmitting end or performing one or more data transmission methods applied to the receiving end.
  • the transceiver 310 can correspond to an optical port of the transmitting end or the receiving end, and can be used for transmitting an optical signal and/or receiving an optical signal.
  • the memory 320 can be comprised of various types of storage media that can be used to store various information, for example, at least for storing computer executable code executed by the processor 330.
  • the processor 330 can be various types of processors, and can include: a central processing unit, a microprocessor, a digital signal processor, a programmable array or an application specific integrated circuit, etc.; the processor can be executable by a computer Execution, the transceiver can be controlled to send and receive information, and the information of the memory can be written and read.
  • one or more data transmission methods can be implemented. For example, the method shown in FIG. 1, FIG. 2 and FIG. 4 can be executed. One or more of them. If the network device is the foregoing transmitting end, at least the data transmission method shown in FIG. 1 and/or FIG. 2 can be implemented; if the network device is the foregoing receiving end, at least the foregoing data shown in FIG. 4 can be implemented. Transmission method.
  • the processor 330 can be respectively connected to the transceiver and the memory through a bus (for example, the integrated circuit bus I 2 C).
  • This example provides a transmission method based on the low-rate client service in the FlexE protocol, including:
  • Step 1 The sender determines the number of sub-slots based on the number and rate of low-rate customer services, and the sub-slot location where the client is located. The free block in the subslot is replaced with an identification block.
  • Step 2 According to the order relationship of the sub-slots, the sub-slots are multiplexed into a code stream with a rate of about 5 Gbit/s, and an appropriate amount of free blocks are inserted between the code blocks of the code stream, and then according to the FlexE protocol.
  • the slot is sent to the receiving end.
  • the low-rate customer service is a customer service whose transmission rate can be lower than the bandwidth corresponding to one time slot.
  • the bandwidth of one slot is 5 Gbit/
  • the service rate of the low-rate client is less than 5 Gbit/s. Customer business.
  • Step 3 The receiving end extracts the code stream from the FlexE protocol time slot, strips out all the free blocks, and obtains an initial appearance of the code stream corresponding to the time slots into which the plurality of low-rate client services are spliced.
  • all the free blocks may be a free block inserted after the code stream corresponding to the time slot is formed after the multiple sub-time slots are combined into a time slot, and the free block may include: a free block inserted by the transmitting end itself, including the middle The free block inserted by the device, so that the original code stream of one time slot can be obtained by the stripping of the free block.
  • Step 4 According to the content of the identification block (the foregoing division information), determine the relationship between the time slot and the sub-slot, the resource location of the sub-slot occupied by each client service, extract the service data of the customer service, and restore the identification block. Into a free block, restore the original each customer service information block.
  • the step 1 may include the following steps, but is not limited to the following steps:
  • Step 1.1 Determine the number and transmission rate of customer services sharing a strip of FlexE protocol time slots.
  • Step 1.2 Determine the number of sub-slots divided by one time slot, and the number and location of occupied sub-slots for each customer service.
  • the information blocks of the customer service are placed in multiple sub-slots in sequence; otherwise, each client occupies one sub-slot.
  • Step 1.3 determining content of the identification block in each sub-slot, the content including the foregoing various division information
  • Step 1.4 Replace all free blocks in the sub-slot with the identification block.
  • Step 1.5 the number of identification blocks may be deleted or increased as appropriate to adjust the rate.
  • the sender and/or the intermediate device may appropriately delete or increase the number of identification blocks to achieve consistency of the exit rate and the entry rate.
  • the step 1.3 can include:
  • Step 1.3.1 A special information block conforming to the 802.3 standard is used as an identification block, for example, an O code block, and the O code block is appropriately extended.
  • Step 1.3.2 The identifier block includes, but is not limited to, the total number of sub-time slots, the sub-slot identifier, the no-load identifier, the bearer type flag, and the total number of sub-slots of the client, which are used to indicate the number of sub-time slots occupied by the client service. ; sub-slot identification, verification information, etc. within the customer.
  • Step 1.3.3 The sub-slot position and the client condition carried by the sub-slot, determine the content of the identification block, and finally determine the check value of the CRC.
  • the CRC check value is the result calculated by some mathematical operation formula according to other contents in the identification block, such as CRC4 operation and CRC8 operation.
  • the step 2 may include:
  • Step 2.1 Starting from the first sub-slot, one information block is sequentially taken from each sub-slot, and in this cycle, all sub-time slots are multiplexed into a 5G-rate service flow.
  • Step 2.2 Insert a free block at intervals of 5000 block information blocks (or less than 5000 information block intervals) in the 5G rate service flow, and use the medium-to-medium frequency between the devices in the network at a maximum of 200 PPM (plus or minus 100 PPM). Speed adjustment when frequency offset.
  • Step 2.3 The service flow is carried in the FlexE time slot and sent to the receiving end.
  • the step 3 may include:
  • Step 3.1 Determine the time slots in the FlexE protocol that carry low-rate customer traffic.
  • Step 3.2 Obtain all code blocks from the FlexE protocol time slot and strip all free blocks in the code block.
  • the step 4 may specifically include:
  • Step 4.1 Determine the location of all the identification blocks in the code stream according to the characteristics of the identification block (the type identification and format of the identification block).
  • Step 4.2 Verify the content of the identification block, perform an operation according to the calculation formula of the sending end and the content of the participating operation, and determine whether the operation result is consistent with the verification result carried by the identification block itself. The match indicates that the identification block is correctly verified, otherwise the verification error is indicated. Verify that the correct identification block continues to analyze other content.
  • Step 4.3 Analyze other contents of the identification block, determine the total number of sub-timeslots, the order relationship of the identification blocks in the total sub-timeslots, and determine other sub-slot positions.
  • Step 4.4 After determining the positions of all the sub-time slots, divide the code stream corresponding to one time slot into the code streams of the plurality of sub-time slots.
  • Step 4.5 Determine the customer information according to the content of the identification block in each sub-slot, and recover the code block of the customer service.
  • the code stream of the client service is recovered according to the position order of the sub-slots and the code block context.
  • Step 5.5 Replace the identification block in each data stream with a free block to recover the original customer information flow block.
  • the FlexE protocol is defined in terms of physical layer 100G rate.
  • the 100G data packet is 64/66 encoded before the data packet is transmitted, and the 64-bit code block is expanded into a 66-bit information block, and the added 2 bits are located in front of the 66-bit block.
  • As the start flag of the 66-bit block it is then sent out from the optical port in a 66-bit block.
  • the optical port discriminates the 66-bit block from the received data stream, and then recovers the original 64-bit data from the 66-bit block, reassembling the data message.
  • the FlexE protocol is in the 64-bit to 66-block conversion layer.
  • the 66-bit code blocks are sorted and planned before the 66-bit code block is transmitted, as shown in Figure 8. For every 100 66-bit code block partitions for 100G services. As a block group, there are 20 code blocks in each group, representing 20 time slots, each time slot representing a service speed of 5G (bit/s) bandwidth.
  • a FlexE overhead block is inserted every 1023 code block groups (1023*20 code blocks), as shown in FIG. After inserting the overhead block, continue to send the code block, after transmitting the second 1023*20 code blocks, insert the overhead block, and so on, so that during the process of transmitting the code block, the overhead block is periodically inserted.
  • the interval between two adjacent overhead blocks is 1023*20 code blocks.
  • each physical layer When four physical layers of 100 Gbit/s are bundled into a logical service bandwidth of 400 Gbit/s, as shown in FIG. 9, each physical layer still forms a code block group according to 20 code blocks, and is inserted every 1023 code block groups. An overhead byte.
  • 4 channels and 20 code blocks are assembled into a block group consisting of 80 code blocks, and there are 80 time slots in the block group. The customer service is transmitted in these 80 time slots, each of which has a bandwidth of 5 Gbit/s and a total service bandwidth of 400 Gbit/s.
  • the FlexE overhead block is a 66-bit-long overhead block.
  • an overhead block is inserted every 1023*20 code blocks.
  • the overhead block plays a positioning function in the entire service flow.
  • the location of the first code block group in the service and the location of the subsequent code block group can be known.
  • the content of the overhead block is shown in Figure 4.
  • the eight consecutive overhead blocks form an overhead frame.
  • An overhead block consists of a 2-bit block flag and 64-bit block contents. The block flag is located in the first 2 columns, the next 64 columns are the block contents, the block flag of the first overhead block is 10, and the block flags of the following 7 overhead blocks are 01 or SS (SS indicates that 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 multiframe indication), RPF Bit (1 bit, indicating remote defect indication), RES bit (1 bit, reserved bit), FlexE bundle number (group number, 20 bits total), 0x5 (4 bits, hexadecimal "5") ), "000000” (28 bits in total, all "0").
  • 0x4B and 0x5 are the flag indications of the first overhead block.
  • the reserved portion is reserved and has not been defined, as shown in the black block shown in FIG.
  • the first overhead block is defined as 4B (hexadecimal, identified as 0x4B) and 05 (hexadecimal, identified as 0x5).
  • Two field identifiers When the corresponding location is the content of the fields 4B and 05 in the overhead block, it indicates that the overhead block is the first overhead block, and the following seven overhead blocks constitute one frame.
  • the OMF field is a multiframe indication signal as shown in FIG. OMF is a single-bit value, which is "0" in 16 consecutive frames, then "1" in 16 consecutive frames, then "0" in consecutive 16 frames, and then "1" in consecutive 16 frames, every 32 frames. Repeat once, so that the multiframe is composed of 32 frames.
  • the physical layer (Physical, PHY) rate defined by the FlexE protocol is 100G, and 20 slots are defined on the 100G PHY, and each slot has a bandwidth of 5G (bit/s).
  • 5G bit/s
  • the minimum bandwidth of the customer service carried by the FlexE protocol is 5G bit/s, which is carried by a FlexE time slot.
  • the customer service bandwidth is less than 5G, a time slot with a bandwidth of 5G bit/s must also be occupied, and there is a waste of bearer.
  • the customer service has many low-speed services such as 10M bit/s, 100M bit/s, 1G bit/s, etc. These customer services may be an enterprise group private line, a bank branch line, and a government agency line. Independent pipelines are delivered to achieve physical isolation to ensure information security.
  • the FlexE protocol provides time slot functions for physical isolation. However, if a 5G pipe is used to carry 1G or 10M customer services, the bearer bandwidth is very wasteful. If you share a FlexE time slot with five 1G client services, as shown in Figure 11. In a FlexE time slot, one code block of the first client is carried in sequence, one code block of the second client, one code block of the third client, one code block of the fourth client, and one code block of the fifth client.
  • the first customer has a code block... and so on, so that five customers share a FlexE time slot, which improves bandwidth utilization. Since the location between the customers is determined by the order relationship, it can only be suitable for point-to-point transmission between two devices, and cannot be networked to achieve end-to-end (penetrating intermediate device) transmission. As shown in Figure 12, at the Provider Edge (PE) node, five 1G customer services share a FlexE time slot through polling multiplexing, and are transmitted from the PE device to the first P device.
  • the device is a standard FlexE interface. It does not support 1G service processing. It can only process FlexE time slots with 5G bandwidth.
  • a 5G time slot is treated as a client, and the 5G service of the west entrance is crossed to the east exit, and then sent out.
  • the P-device westbound and eastbound exit rates are not equal (absolutely equal speeds are unrealistic)
  • the P-node needs to adjust the rate.
  • the east exit speed is greater than the west entrance speed
  • the P point device needs to insert a free block in the FlexE data stream.
  • the free block does not carry customer information and is only used for rate adjustment.
  • FIG. 13 a method for sharing a FlexE time slot by five low-rate client services, where the FlexE time slot is divided into multiple sub-timeslots, and the data stream is determined to be carried on those sub-time slots, and the identification block is used.
  • the identification block includes the number of sub-slots of the FlexE slot, the client information on the sub-slot, and the verification information.
  • the light red block is the identification block of the red customer
  • the light blue block is the identification block of the blue customer.
  • FIG. 3 shows the structure of the identification block.
  • the identification block uses the 66-bit code block structure defined in the 802.3 standard.
  • the O code block in the standard is used, and the O code block is extended.
  • the O code block is a control block.
  • the first two bits are "10", then one byte (8 bits) is 0x4B (4B is hexadecimal), followed by three bytes of data. content.
  • the serial code feature of the O code At the position of 34-37, it is the serial code feature of the O code.
  • the standard uses "0" as the serial code feature to indicate that the data content of the first three bytes conveys the status of the customer fault information.
  • the serial code feature is extended, and a "C" (hexadecimal C, ie, decimal 12) flag is used to indicate that it is an identification block, and other contents may be used in actual applications. All subsequent contents are all filled with "0".
  • C hexadecimal C, ie, decimal 12
  • the slot division is transmitted with 3 bytes defined in the O code.
  • the contents of 3 bytes include (but are not limited to) the total number of slots, the slot number of the block, and the current time.
  • the total number of slots indicates how many sub-slots are divided into 5G slots; the total number of sub-slots is used to indicate the number of sub-slots included in one of the slots; and the sub-slot identifier is used to indicate the resources of the sub-slot.
  • an unloaded identifier used to indicate whether the sub-timeslot carries the service data
  • a bearer type flag used to indicate that all service data or part of service data of a single client service is carried in the sub-slot
  • the number of sub-slots used to indicate the occupation of the customer service
  • the sub-slot identifier in the customer is used to indicate the time slot identifier of all sub-time slots occupied by the sub-slot in a single client service
  • the verification information is used to perform the Identifies the check of the block.
  • the sub-slot number of the block, etc. After determining the total number of sub-timeslots, the sub-slot number of the block, etc., according to some mathematical algorithm (such as CRC4 check algorithm, CRC8 check algorithm), these contents are operated, and the operation result is placed in the identification block. CRC check location.
  • CRC check location At the receiving end, use the same mathematical calculation method to calculate the same content and see if the operation result matches the check value of the carried CRC.
  • the anastomosis indicates that the verification is correct, and the receiving end extracts the remaining content in the identification block when the verification is correct.
  • the identification block is used to replace the free block in the sub-slot.
  • the content in the identification block indicates the division method of the FlexE slot: how many sub-slots are divided, and the customer situation carried on each sub-slot. Since there are many free blocks in each sub-slot, there are many kinds of identification blocks. Even if one identification block has an error during the transmission, when the next identification block appears, the sub-slot structure can be correctly analyzed. When the free block in the sub-slot is replaced, the free block does not appear in the code stream of the sub-slot, the free block added and deleted in the code stream of the time slot, and the resources of the sub-slot after all the free blocks are deleted at the receiving end The location relationship will be consistent with the location of the resource at the sender.
  • the information blocks of all the sub-slots are interleaved and multiplexed into a near-5G rate information according to the order relationship and the sequential polling according to the positional relationship of the sub-slots in the identification block.
  • the block code stream carries the block stream on the FlexE protocol time slot. Since there is no free block in the information block stream, the rate cannot be dynamically adjusted according to the frequency condition in the network transmission, so the transmission cannot be carried end-to-end on the network. An appropriate amount of free blocks (blocks) are inserted in these information streams, as in the block of FIG.
  • the deviation between the time-frequency of the network interface and the nominal frequency cannot exceed 100PPM (PPM is one-millionth) or negative 100PPM, so between any two devices in the network (maximum frequency and minimum frequency)
  • the maximum frequency difference does not exceed 200PPM. It only needs to be able to tolerate 200PPM frequency deviation adjustment and can be transmitted on the network. Therefore, in the information stream block, a free block is inserted every 5000 blocks, which is equivalent to every million blocks. There are 200 free blocks that can be added or deleted by the intermediate device. Of course, more free blocks can be inserted, but some transmission bandwidth is lost.
  • the service flow block is sent out through the FlexE time slot bearer.
  • each intermediate P device adds or deletes the free block in the service flow according to the time-frequency deviation condition. Send the service to the receiving PE device.
  • the FlexE time slot carrying the low-rate client service is determined, all the code blocks are extracted, and then all the free blocks in the code blocks are stripped off, and the remaining information blocks of the low-rate client service are discarded.
  • the identification block look for the identification block and verify that the identification block is correct. Using the same mathematical calculation method, the same content is calculated, and the verification result is consistent with the check value of the carried CRC, and the coincidence indicates that the verification is correct.
  • various contents in the division information are extracted, and according to the division information, it is known how many sub-slots, the order relationship between each sub-slot, and the customer information carried on each sub-slot.
  • the customer information is carried on multiple sub-slots, it can know how many sub-slots the customer occupies, the position and order relationship of the sub-slots, so that the customer service can be recovered.
  • the FlexE time slot is divided into 5 by sharing one FlexE time slot by five 1G customers (customer 1, customer 2, customer 3, customer 4, and customer 5, respectively, as shown in FIG. 15).
  • the sub-slots; the sender determines the content of the identification block according to the service data carried in each sub-slot, as shown in FIG.
  • the identification block indicates that there are a total of five sub-slots (the order relationship of each sub-slot is 0, 1, 2, 3, 4, 0, 1), and the first customer service is transmitted on the first sub-slot, so the client
  • the value of the slot number of the block in the identification block is "0", indicating that the location of the information block is the first sub-slot position; and so on, the value of the slot number of the block in the identification block of the second client service is " 1".
  • the FlexE slot As shown in Figure 16, four sub-slots are divided in the FlexE slot, but there are only three 1.25 Gbit/s client services, and the three client services are carried over a FlexE slot.
  • the three customer segments are transmitted on sub-slots 0, 1, and 3, respectively, and the sub-slot 2 does not carry client services.
  • the identification block As shown in FIG. 15, the contents of the idle sub-slot are all the same, and are all identification blocks.
  • the content in the identifier block indicates that no service data is carried on the sub-timeslot. As shown in FIG. 17, the identifier block having one sub-slot is given the idle state and does not carry any client information.
  • sub-slots there are two sub-slots indicating that the customer service occupies two sub-slots, one sub-slot is the first sub-slot of the customer service, and the other sub-slot is the second sub-time of the customer service. Gap.
  • the identification of the identity block and the discovery that the client service occupies multiple sub-slots it is determined that the customer service has those sub-slots, the order of the sub-slots in the customer service, and then sequentially from the sub-slots according to the order relationship. Extract customer information.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner such as: multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored or not executed.
  • the coupling, or direct coupling, or communication connection of the components shown or discussed may be indirect coupling or communication connection through some interfaces, devices or units, and may be electrical, mechanical or other forms. of.
  • the units described above as separate components may or may not be physically separated, and the components displayed as the unit may or may not be physical units, that is, may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing module, or each unit may be separately used as one unit, or two or more units may be integrated into one unit;
  • the unit can be implemented in the form of hardware or in the form of hardware plus software functional units.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing storage device includes the following steps: the foregoing storage medium includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • ROM read-only memory
  • RAM random access memory
  • magnetic disk or an optical disk.
  • optical disk A medium that can store program code.

Landscapes

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

Abstract

Les modes de réalisation de la présente invention concernent un procédé et un appareil de transmission de données, un dispositif de réseau, et un support de stockage. Le procédé de transmission de données consiste à : diviser un intervalle de temps en une pluralité de sous-intervalles de temps d'après des informations relatives à un service client ; ajouter des blocs de code aux sous-intervalles de temps, les blocs de code comprenant des blocs d'informations et des blocs d'identification, les blocs d'informations comprenant des données de service relatives au service client, les blocs d'identification comprenant des informations de division relatives à l'intervalle de temps ; utiliser les blocs de code des sous-intervalles de temps pour composer un flux de code de l'intervalle de temps ; et envoyer le flux de code.
PCT/CN2019/072555 2018-03-12 2019-01-21 Procédé et appareil de transmission de données, dispositif de réseau, et support de stockage WO2019174406A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810201807.XA CN110266612B (zh) 2018-03-12 2018-03-12 数据传输方法及装置、网络设备及存储介质
CN201810201807.X 2018-03-12

Publications (1)

Publication Number Publication Date
WO2019174406A1 true WO2019174406A1 (fr) 2019-09-19

Family

ID=67907361

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2019/072555 WO2019174406A1 (fr) 2018-03-12 2019-01-21 Procédé et appareil de transmission de données, dispositif de réseau, et support de stockage

Country Status (2)

Country Link
CN (1) CN110266612B (fr)
WO (1) WO2019174406A1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111092686A (zh) * 2019-11-28 2020-05-01 中兴通讯股份有限公司 一种数据传输方法、装置、终端设备和存储介质
CN112436900A (zh) * 2020-10-30 2021-03-02 中国石油天然气集团有限公司 数据传输方法及装置
CN113993163A (zh) * 2021-10-26 2022-01-28 新华三信息安全技术有限公司 一种业务处理方法及装置
CN114301691A (zh) * 2021-12-29 2022-04-08 威创集团股份有限公司 分布式信号单向传输隔离方法、装置、设备及存储介质
CN114615142A (zh) * 2020-12-03 2022-06-10 烽火通信科技股份有限公司 一种业务处理的方法和装置
CN114762274A (zh) * 2019-12-31 2022-07-15 华为技术有限公司 速率调节装置和方法
WO2023035776A1 (fr) * 2021-09-13 2023-03-16 华为技术有限公司 Procédé de communication, appareil correspondant et support de stockage
WO2024001230A1 (fr) * 2022-06-28 2024-01-04 中兴通讯股份有限公司 Procédé de support, équipement de communication et support de stockage
US12074643B2 (en) 2019-11-28 2024-08-27 Zte Corporation Data transmission method and apparatus, terminal device and storage medium

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112636883A (zh) * 2019-09-24 2021-04-09 华为技术有限公司 业务处理方法、装置及存储介质
CN110856052B (zh) * 2019-11-13 2022-07-19 Ut斯达康通讯有限公司 支持多种粒度的FlexE实现方法、装置及电子设备
CN112865910A (zh) 2019-11-28 2021-05-28 中兴通讯股份有限公司 一种数据传输方法、装置、终端设备和存储介质
CN111107641B (zh) * 2019-12-11 2023-11-07 Ut斯达康通讯有限公司 FlexE业务处理方法、装置及电子设备
CN113472826A (zh) * 2020-03-30 2021-10-01 中兴通讯股份有限公司 一种业务承载、提取方法、数据交换方法及设备
CN113853014A (zh) * 2020-06-28 2021-12-28 中国移动通信有限公司研究院 信息传输方法、装置、相关设备及存储介质
CN113923778A (zh) * 2020-07-07 2022-01-11 中国移动通信有限公司研究院 一种切片通道的信息传输方法、装置及设备
CN111917506B (zh) * 2020-07-21 2021-07-20 烽火通信科技股份有限公司 一种FlexE低速业务处理方法和装置
CN114125019A (zh) * 2020-08-31 2022-03-01 深圳市中兴微电子技术有限公司 数据传输的方法和装置、电子设备、计算机可读介质
CN112218293B (zh) * 2020-10-22 2023-04-18 山东纽克信息技术有限公司 移动终端安全通信方法、装置、终端设备及存储介质
CN115802472A (zh) * 2021-09-10 2023-03-14 中兴通讯股份有限公司 信元流的发送方法、装置、网络设备和存储介质
CN114584258B (zh) * 2022-02-15 2023-05-26 烽火通信科技股份有限公司 业务时延降低方法、装置、设备及可读存储介质

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1250280A (zh) * 1998-08-12 2000-04-12 朗迅科技公司 无线电信系统中格式化并传送信息的一种方法
CN1878033A (zh) * 2006-07-04 2006-12-13 华为技术有限公司 在语音业务中传输编码速率适配单元帧的方法
US20160119076A1 (en) * 2014-10-24 2016-04-28 Ciena Corporation Channelized oduflex systems and methods
CN106411454A (zh) * 2015-07-30 2017-02-15 华为技术有限公司 用于数据传输的方法、发送机和接收机
CN108632886A (zh) * 2017-03-21 2018-10-09 华为技术有限公司 一种业务处理方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101873517B (zh) * 2009-04-24 2013-08-07 华为技术有限公司 光传送网的信号传送方法、设备及通信系统
JP5547214B2 (ja) * 2009-05-11 2014-07-09 ▲ホア▼▲ウェイ▼技術有限公司 光伝送網においてデータを送信する方法、システム、および装置
US10075259B2 (en) * 2016-01-06 2018-09-11 Infinera Corporation Systems and methods of time slot allocation for shared mesh protection on bundled links
CN107438028B (zh) * 2016-05-25 2020-10-09 华为技术有限公司 一种客户业务处理的方法和设备
CN107566074B (zh) * 2016-06-30 2019-06-11 华为技术有限公司 光传送网中传送客户信号的方法及传送设备
CN107612825B (zh) * 2017-08-04 2020-10-27 华为技术有限公司 建立灵活以太网路径的方法和网络设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1250280A (zh) * 1998-08-12 2000-04-12 朗迅科技公司 无线电信系统中格式化并传送信息的一种方法
CN1878033A (zh) * 2006-07-04 2006-12-13 华为技术有限公司 在语音业务中传输编码速率适配单元帧的方法
US20160119076A1 (en) * 2014-10-24 2016-04-28 Ciena Corporation Channelized oduflex systems and methods
CN106411454A (zh) * 2015-07-30 2017-02-15 华为技术有限公司 用于数据传输的方法、发送机和接收机
CN108632886A (zh) * 2017-03-21 2018-10-09 华为技术有限公司 一种业务处理方法及装置

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021103928A1 (fr) * 2019-11-28 2021-06-03 中兴通讯股份有限公司 Procédé et appareil de transmission de données, dispositif terminal et support d'enregistrement
US12074643B2 (en) 2019-11-28 2024-08-27 Zte Corporation Data transmission method and apparatus, terminal device and storage medium
CN111092686A (zh) * 2019-11-28 2020-05-01 中兴通讯股份有限公司 一种数据传输方法、装置、终端设备和存储介质
CN114762274A (zh) * 2019-12-31 2022-07-15 华为技术有限公司 速率调节装置和方法
CN114762274B (zh) * 2019-12-31 2024-04-09 华为技术有限公司 速率调节装置和方法
CN112436900A (zh) * 2020-10-30 2021-03-02 中国石油天然气集团有限公司 数据传输方法及装置
CN114615142B (zh) * 2020-12-03 2023-06-09 烽火通信科技股份有限公司 一种业务处理的方法和装置
CN114615142A (zh) * 2020-12-03 2022-06-10 烽火通信科技股份有限公司 一种业务处理的方法和装置
WO2023035776A1 (fr) * 2021-09-13 2023-03-16 华为技术有限公司 Procédé de communication, appareil correspondant et support de stockage
CN113993163B (zh) * 2021-10-26 2023-07-25 新华三信息安全技术有限公司 一种业务处理方法及装置
CN113993163A (zh) * 2021-10-26 2022-01-28 新华三信息安全技术有限公司 一种业务处理方法及装置
CN114301691B (zh) * 2021-12-29 2022-10-25 威创集团股份有限公司 分布式信号单向传输隔离方法、装置、设备及存储介质
CN114301691A (zh) * 2021-12-29 2022-04-08 威创集团股份有限公司 分布式信号单向传输隔离方法、装置、设备及存储介质
WO2024001230A1 (fr) * 2022-06-28 2024-01-04 中兴通讯股份有限公司 Procédé de support, équipement de communication et support de stockage

Also Published As

Publication number Publication date
CN110266612B (zh) 2022-01-25
CN110266612A (zh) 2019-09-20

Similar Documents

Publication Publication Date Title
WO2019174406A1 (fr) Procédé et appareil de transmission de données, dispositif de réseau, et support de stockage
US10951340B2 (en) Method and device for transmitting bit error rate information in FlexE overhead frame, and computer storage medium
CN113784437B (zh) 一种FlexE承载小颗粒业务的实现方法和装置
WO2018059446A1 (fr) Procédé, dispositif et système de transmission de données de service, et support de stockage
CN107888344B (zh) 一种误码检测的方法、设备和系统
US8787406B2 (en) Method and apparatus for distributing and receiving high-speed ethernet media independent interface blocks
WO2018130228A1 (fr) Procédé, dispositif et système de fourniture de service, et support de stockage
CN111092686A (zh) 一种数据传输方法、装置、终端设备和存储介质
WO2018000894A1 (fr) Procédé, appareil, et système de réseau d'émission et de réception de services
CN109672560B (zh) 灵活以太网管理通道扩展方法及设备
WO2019007431A1 (fr) Procédé et appareil de notification et d'acquisition de défaillance pour ethernet flexible, et dispositif de communication
US20230164624A1 (en) Service data processing, exchange and extraction methods, devices, and computer-readable medium
CN109257194B (zh) 处理承载通道的oam信息的方法、装置、设备及系统
US11438098B2 (en) Data transmission method, sending apparatus, and receiving apparatus
CN112994843A (zh) 以太网帧定帧方法和装置
US20200280371A1 (en) Method, device, and system for transmitting data
CN109845217B (zh) 灵活以太网中传输数据的方法和设备
CN113454935B (zh) 一种线路编码方法及装置
CN114866185A (zh) 一种传输多优先级数据帧的方法
WO2020177693A1 (fr) Procédé et appareil d'envoi de flux de données de service client, et support d'informations
CN111817986A (zh) 一种报文处理方法、装置及计算机可读存储介质
US12074643B2 (en) Data transmission method and apparatus, terminal device and storage medium
WO2023143577A1 (fr) Procédé, appareil et système de traitement de trame de données dans un réseau de transport optique
CN117579220A (zh) 一种故障码块处理方法及装置
CN113923778A (zh) 一种切片通道的信息传输方法、装置及设备

Legal Events

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

Ref document number: 19767509

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 21/01/2021)

122 Ep: pct application non-entry in european phase

Ref document number: 19767509

Country of ref document: EP

Kind code of ref document: A1