WO2019056899A1 - Oam消息传输方法、传输设备及存储介质 - Google Patents

Oam消息传输方法、传输设备及存储介质 Download PDF

Info

Publication number
WO2019056899A1
WO2019056899A1 PCT/CN2018/101192 CN2018101192W WO2019056899A1 WO 2019056899 A1 WO2019056899 A1 WO 2019056899A1 CN 2018101192 W CN2018101192 W CN 2018101192W WO 2019056899 A1 WO2019056899 A1 WO 2019056899A1
Authority
WO
WIPO (PCT)
Prior art keywords
block
oam
message
blocks
free
Prior art date
Application number
PCT/CN2018/101192
Other languages
English (en)
French (fr)
Inventor
程伟强
李晗
王磊
Original Assignee
中国移动通信有限公司研究院
中国移动通信集团有限公司
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 中国移动通信有限公司研究院, 中国移动通信集团有限公司 filed Critical 中国移动通信有限公司研究院
Priority to EP18858412.2A priority Critical patent/EP3678330B1/en
Priority to US16/648,579 priority patent/US11558143B2/en
Publication of WO2019056899A1 publication Critical patent/WO2019056899A1/zh

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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/04—Network management architectures or arrangements
    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
    • H04L1/0007—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length
    • H04L1/0008—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format by modifying the frame length by supplementing frame payload, e.g. with padding bits
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/02—Standardisation; Integration
    • H04L41/0246—Exchanging or transporting network management information using the Internet; Embedding network management web servers in network elements; Web-services-based protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/34—Signalling channels for network management communication

Definitions

  • the present invention relates to the field of communications technologies, but is not limited to the field of communications technologies, and in particular, to an Operation Administration and Maintenance (OAM) message transmission method, a transmission device, and a storage medium.
  • OAM Operation Administration and Maintenance
  • OAM messages are various information that an operator needs to transmit during daily operation, management, and maintenance of the network. How to implement the transmission of the OAM message, so that the degree of the user side is minimized to improve the user experience, and the transmission of the OAM message without assigning the dedicated transmission resource is a problem to be solved in the prior art.
  • the embodiments of the present invention are expected to provide an OAM message transmission method, a transmission device, and a storage medium.
  • an operation management and maintenance OAM message transmission method including:
  • an operation management dimension OAM message transmission method including:
  • OAM block is extracted from the data stream, wherein the OAM block is a code block that replaces a free block in the original data stream.
  • the third aspect provides an operation management and maintenance OAM message transmission device, including:
  • An acquiring unit configured to acquire an OAM block generated based on an OAM message
  • a replacement unit configured to replace the free block in the data stream with the OAM block
  • the sending unit is configured to send the data stream carrying the OAM block.
  • a fourth aspect provides a transmission device for an OAM message, including:
  • a receiving unit configured to receive a data stream
  • An extracting unit configured to extract an OAM block from the data stream, wherein the OAM block is a code block that replaces a free block in the original data stream.
  • a fifth aspect provides a transmission device, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executed by the processor;
  • the processor is connected to the transceiver and the memory, respectively, for implementing the OAM message transmission method provided by any one of the first aspects, or performing the OAM message provided by any one of the second aspects, by executing the computer program. Transmission method.
  • a computer storage medium storing a computer program, wherein the computer program is executed, can implement the OAM message transmission method provided by any one of the first aspects, or perform the second aspect A provided OAM message transmission method.
  • the OAM message transmission method, the transmission device, and the storage medium provided by the embodiments of the present invention generate an OAM block by using an OAM message block, and replace the free block in the data stream with an OAM block. In this way, a data stream carrying the OAM block is generated.
  • the original free block is a data block that does not carry the information content that needs to be received by the receiver.
  • the free block is replaced, and the OAM block is transmitted by using the transmission resource that transmits the free block.
  • the transmission resource of the transmission OAM block is not allocated exclusively, so the effective utilization of the transmission resource is improved.
  • the transmission resources are not allocated exclusively, and the replacement of the free blocks does not increase the parameters such as the length of the data stream and does not cause other changes in the data stream transmission, thereby being compatible with the prior art and having a simple transmission. specialty.
  • FIG. 1 is a schematic flowchart of a first OAM message transmission method according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of an O block according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart diagram of a second OAM message transmission method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a third OAM message transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a transmission device according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another transmission device according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of still another transmission device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic diagram of insertion and extraction of an OAM block according to an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of transmission of an OAM block according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of another alternative of an OAM block according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of an OAM block according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of another OAM block according to an embodiment of the present disclosure.
  • FIG. 13 is a schematic diagram of a first type of OAM block replacing a free block according to an embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a second OAM block replacement idle block according to an embodiment of the present disclosure.
  • FIG. 15 is a schematic diagram of a first type of OAM block replacing a free block according to an embodiment of the present disclosure
  • FIG. 16 is a schematic diagram of a second OAM block replacement free block according to an embodiment of the present invention.
  • this embodiment provides an operation management and maintenance OAM message transmission method, including:
  • Step S110 Acquire an OAM block generated based on the OAM message.
  • Step S120 replacing the free block in the data stream by using the OAM block
  • Step S130 Send a data stream carrying the OAM block.
  • the OAM message transmission method is applied to a sending device of an OAM message.
  • the above operations can be performed by a Flexible Ethernet (FlexE) Slice Packet Network (SPN) channel layer.
  • the SPN channel layer can also be referred to as a FlexE path layer.
  • the data stream may be a data stream from a user client, and a free block is usually inserted in the data stream to coordinate the problem of inconsistent transmission and reception frequency between the two ends. For example, if the sending rate of the transmitting end is higher than the receiving rate of the receiving end, the original free block can be replaced with the data block carrying the data content, thereby reducing the data accumulation at the transmitting end. If the sending rate of the transmitting end is lower than the receiving rate of the receiving end, The free block can be added to avoid the interruption of the data stream, thereby maintaining the continuous transmission of the data stream.
  • the data stream can also be referred to as a traffic data stream.
  • An OAM block carrying at least part of the message content of the OAM message is obtained according to the message content of the OAM message in step S110.
  • the obtaining of the OAM block here includes: receiving from the control device, and also including: generating the OAM message according to itself.
  • the block length of the OAM block here is equal to the block length of the free block.
  • the block length is the bit length included in the corresponding block.
  • the free block is a 66-bit block
  • the OAM block is also a 66-bit block.
  • a typical non-free block may include: a start (S) block that identifies a start of a transmission cycle, an end (T) block that identifies a end of a transmission cycle, and a data (D) block that carries data content.
  • the OAM block may be encapsulated according to a type, length, and attribute value (TLV) format, that is, a type field indicating that it is an OAM block is encapsulated at a predetermined position of the OAM block, and the receiving end detects the field.
  • TLV type, length, and attribute value
  • the currently received block is an OAM block, and the data length of the OAM block and the field or bit corresponding to the attribute value are known.
  • the attribute value may be a field and/or a bit for carrying data content.
  • the OAM block may carry one or more indication fields of the OAM function; when the indication field of the OAM function is carried, the transmission of an OAM block may trigger the execution of multiple OAM functions, the OAM
  • the function can be any function related to OAM, for example, connectivity detection, delay detection, and/or various verification functions, etc.
  • An OAM block implements triggering of multiple OAM functions, and has the code block efficiency of the OAM block. .
  • the free block is a code block that does not carry information content that needs to be received by the receiver.
  • a type field indicating the type of the code block is carried in the free block, so that after the receiving end or the SPN channel is received, whether the current code block is a free block can be determined by extracting the code block type field.
  • the generated OAM block can be replaced with the free block.
  • the OAM message is transmitted by using the existing data stream, for example, the transmission resource corresponding to the free block in the service data stream, so that the transmission resource of the OAM message is not specially configured, and the transmission resource is improved. Effective utilization; at the same time, it is not sensible to the client and is compatible with the prior art.
  • the OAM block includes: a first type of OAM block that is sent periodically, and/or a second type of OAM block that is sent as needed.
  • the period of the OAM block in this embodiment may be referred to as an OAM period.
  • the step S120 may include:
  • the first type of OAM block needs to send a predetermined number of OAM blocks for each OAM period, where the predetermined number may be a value of a positive integer such as 1, 2 or 3.
  • the sending time may be determined according to the OAM period. For example, if there is a free block in the data stream received by the SPN channel layer at the sending time, the first type of OAM block is replaced with the free block at the sending time, so as to implement the first type of OAM as possible.
  • the precise periodic transmission of the block reduces the offset of the transmission period of the first type of OAM block.
  • the step S120 may further include:
  • the transmission time of the first type of OAM block When the transmission time of the first type of OAM block is reached according to the period, if there is no free block in the data stream, waiting for the next free block of the data stream, and replacing with the first type of OAM block The next free block. If there is no free block in the data stream at the transmission time of the first type of OAM block, then waiting for the transmission of the data stream to know that the next free block is received, the next free block is replaced with the first type of OAM block.
  • the step S120 may further include:
  • the second type of OAM block is replaced with any one of the free streams in the data stream.
  • the second type of OAM block is sent when there is a demand, and there is no certain transmission period. If it is formed, it starts to detect whether there is a free block in the currently received data stream, and if there is a free block, it is directly replaced by the second type of OAM block.
  • the first type of OAM block is an OAM block generated based on daily periodic maintenance; the second type of OAM block is an OAM block generated based on a trigger event, or an OAM block generated based on the indication.
  • the first type of OAM block includes: a connectivity detection block, a signal quality check block, an indication block of a failure of a client signal local end, an indication block of a client signal remote failure, a power consumption indication block of a client signal, and a remote end. At least one of the defect indication block and the remote error indication block.
  • the connectivity detection block is configured to trigger the receiving end and/or the transmitting end to perform connectivity detection of the transmission link.
  • the signal quality detecting block is configured to trigger the receiving end and/or the transmitting end to perform signal quality detection, for example, detecting a bit error rate and/or a bit error rate.
  • the indication block of the local end of the client signal is used to indicate that the client signal sending the OAM block is invalid.
  • the client signal here is the signal from the client.
  • the indication block of the far-end failure of the client signal is used to indicate that the client signal of the opposite end is invalid.
  • the second type of OAM block includes: at least one of an automatic protection switching block, a client signal type indication block, a connectivity verification block, a one-way delay measurement block, a two-way delay measurement block, and a two-way delay measurement response block. .
  • the automatic protection switching block is configured to indicate an automatic protection switching operation of the performing link, for example, performing link protection and/or handover based on an automatic protection protocol.
  • a client signal type indication block indicating the type of client signal currently being transmitted.
  • the connectivity verification block is used to indicate a code block that performs connectivity verification of a transmission link.
  • the one-way delay measurement block is used to indicate a code block that performs a delay measurement of a unidirectional link from a transmitting end to a receiving end or a receiving end to a transmitting end.
  • the two-way delay measurement block is used for a code block used by the transmitting end to trigger delay measurement of the bidirectional link.
  • the bidirectional link includes: a transmission link from the transmitting end to the receiving end and then from the receiving end to the transmitting end;
  • the bidirectional delay measurement response block is used by the receiving end for the code block of the delay measurement in response to the bidirectional link.
  • the OAM block is divided into a single function OAM block and a multi-function OAM block according to the OAM function that triggers execution.
  • the multi-function OAM block carries multiple fields, and the fields carry fields for triggering to perform different OAM functions.
  • the fields may include: an automatic protection switching field, a client signal type indication field, a connectivity verification field, and a single At least one of a delay measurement field, a two-way delay measurement field, and a two-way delay measurement response block.
  • the step S110 may include:
  • the acquiring the OAM block generated based on the OAM message includes:
  • the independent OAM block may be a separate OAM block, and is a code block carrying a complete OAM message.
  • the data length is the total number of bits included.
  • the data length of the OAM message may be the number of bits included in the OAM message; the length of the bearable data of the OAM block may be the number of bits in the OAM block that can be used to carry message content.
  • one OAM block includes 68 bits, of which only 48 bits can be used to carry message content. If the total number of bits of an OAM message is greater than 48 bits, the OAM message cannot be encapsulated as a separate OAM block. If the total number of bits of the OAM message is less than the 48 bits, it may be encapsulated as the independent OAM block.
  • the obtaining the independent OAM block may include: receiving the independent OAM block from another device, and may also include: generating the OAM block by itself.
  • the step S120 may include:
  • each of the associated OAM blocks carries the OAM message.
  • each of the associated OAM blocks carries a sequence number corresponding to the message content carried by the associated OAM block.
  • the serial number is carried in the associated OAM block, and the serial number is related to the content of the message carried by the same.
  • an OAM message is split into S content segments according to the continuity of the message content; wherein the sth content segment is carried in the sth OAM block, and the sth OAM block carries the sequence number, the sequence The number points to the sth content segment.
  • the receiving end after receiving the S OAM blocks, the receiving end assembles the S content segments according to the serial number, thereby obtaining the message content of the complete and correct OAM message.
  • the S is a positive integer; the s is a positive integer not greater than the S.
  • the serial number is carried in a predetermined position of the OAM.
  • the step S120 may include:
  • the OAM block is replaced with the free block in accordance with a predetermined policy in conjunction with the chronological order and/or transmission priority of the OAM block.
  • the chronological order of the OAM blocks may be: a generation time sequence of the OAM blocks.
  • the chronological order may also be: obtaining an acquisition time sequence of the OAM block.
  • the chronological order and/or the transmission priority are combined, and the OAM block is selected to replace the free block according to a predetermined policy.
  • step S120 may include:
  • the OAM blocks are sequentially selected according to the chronological order to replace the free blocks.
  • the number of OAM blocks in the current time the number of OAMs to be sent at the current time; the number of the free blocks is the number of free blocks detected in the current data stream to be transmitted.
  • selecting the OAM block to replace the free block according to the chronological order may include:
  • the OAM block with the prior chronological order is preferred to replace the free block.
  • the free blocks in the data stream can be replaced in chronological order, so that not only the entire transmission of the OAM block but also all It is sent in chronological order.
  • the OAM block replacing the free block is selected according to the priority.
  • the step S120 may further include:
  • the OAM block with the highest transmission priority is selected to replace the free block according to the different transmission priorities. If the priority of the multiple OAM blocks to be sent is different, the high priority OAM block is sent preferentially, so the high priority OAM block is selected to replace the free block in the data stream.
  • the sending priority may be one or more related to parameters such as message content importance, urgency, and transmission delay requirement of the OAM message.
  • the step S120 may further include: if the number of OAM blocks is greater than the number of the free blocks, and the priority of the to-be-transmitted OAM blocks is the same, selecting the OAM block according to the chronological order to replace the Free block.
  • the chronologically preceding OAM block is used to replace the free block.
  • the step S120 may further include:
  • the OAM block is randomly selected to replace the free block until all OAM blocks are transmitted.
  • the OAM block includes: at least one of the following fields:
  • a sending priority field configured to indicate a sending priority of the OAM block
  • a first check field configured to carry a first check code, where the first check code is used to check the OAM block
  • a message field used to carry the message content of the OAM message is
  • the OAM block includes at least a first class field and a second class field; wherein the first class field is a necessary field and the second class field is an optional field.
  • the first type of fields may include: a type field and a message field. In other embodiments, the first type of field may include: a type field, a message field, and a first check field.
  • the second type of field may include: a sequence number field, a transmission priority field, and the like.
  • a standalone OAM block may not include a sequence number field; the associated OAM block must include the sequence number field.
  • the sequence number field is the second type field for the independent OAM block, and the sequence number field is the first type field for the associated OAM block.
  • the distinction between the first type of field and the second type of field may be determined according to the current OAM attribute.
  • the attribute may include one or more of a message content of the OAM message and an association relationship with other OAM blocks.
  • the OAM block may further include: a second check field.
  • the second check field carries a second check code, and the second check code can be used to check code blocks transmitted in the first m transmission periods.
  • the step S110 may include:
  • an OAM block according to an encapsulation format of a predetermined type of block, wherein the OAM block encapsulates a code block of a message content of the OAM message in a field as a basic unit.
  • the field is encapsulated by using the field as a basic unit.
  • One field is 8 bits. In this case, regardless of whether the code block in the data stream is a 32-bit code block or a 66-bit code block, it can be well compatible, so that there is no bit conflict problem of the package.
  • the predetermined type of block is an O block, and the O block includes 8 bytes, which are 0th to 7th bytes, respectively.
  • the O block is a code block of a predetermined format.
  • Figure 2 shows a code block format for an O block.
  • the numbers 0, 1, 2, ..., 9 repeated in Figure 2 count the number of bits in the O block, apparently in the O block shown in Figure 2. It includes 66 bits.
  • the O block includes 66 bits, wherein the first two bits are sync bits, typically a fixed value of "10".
  • the remaining 64 bits of the O block are split into 8 bytes, which are D0, D1, D2, D3, D4, D5, D6, and D7.
  • the 0th byte (D0) carries a type byte indicating the type of the code block, and the type value of the O block is 0x4B, which is carried by the 0th byte of the code block.
  • the first half of the fourth byte (D4) is already occupied, leaving only the last half of the byte.
  • D1, D2, D3, D5, D6, and D7 are used to carry the message content of the OAM message, or only the contents of the OAM block are carried by D1, D2, D3, D5, D6, and D7.
  • the encapsulation of the content in the OAM block is performed by using 8 bits, that is, one byte as a basic unit.
  • the O block before the transformation the D blocks, D6 and D7 of the O block before the transformation are generally all zero fields;
  • D5, D6, and D7 may carry the content of the OAM block, as shown in the third row of FIG.
  • the receiving end can distinguish whether the currently received O block is an existing O block or a modified O block, that is, the OAM block, according to the carried contents of D5, D6, and D7.
  • the OAM block is encapsulated by using the existing O block format.
  • it is not necessary to set a special encapsulation format for the OAM block encapsulation so that the receiving end does not need to re-understand a new parsing of the OAM block. The way, it is compatible with the prior art.
  • the OAM block is encapsulated by the O-block encapsulation format, and the existing O-blocks D5, D6, and D7 are all zeros, the receiving end is based on the information content in D5, D6, and D7.
  • the original O block and the modified O block are distinguished, so that the O block itself is used to realize the distinction between the O block before the transformation and the O block after the transformation, thereby avoiding confusion.
  • the step S110 includes:
  • the transmission period in this embodiment is different from the transmission period (ie, OAM period) of the OAM block.
  • the number of code blocks that are exchanged between the transmitting end and the receiving end is constant.
  • the method further includes:
  • Step S101 Generate a second check code according to the content of the code block of the nth transmission period
  • the step S110 may include step S111; the step S111 may include:
  • the network device such as the SPN channel layer, generates a second check code based on the contents of all the code blocks in the nth transmission period; and carries the data in the O+ block in the n+m transmission period. Receiving end.
  • the OAM block carrying the second check code may be directly received from other devices in step S110.
  • the OAM message transmission method provided in this embodiment may also be used to transmit the second check code, because the OAM block carries the second check code or is generated based on the second check code.
  • the second check code may be a parity check, for example, may be bit interleaved parity (BIP) for the receiving end to check the reception correctness of all code blocks in the nth transmission period.
  • BIP bit interleaved parity
  • the m is a positive integer, and may be a value of 1, 2, or 3, or the like.
  • the second check code is sent in the data stream carried in the n+mth transmission period, so that sufficient generation time of the second check code is given, and the generation station is reduced.
  • the performance requirements of the second check code are well compatible with the prior art.
  • the OAM block includes: a first type of OAM block sent periodically, and/or a second type of OAM block sent on demand;
  • the step S110 may include:
  • the first type of OAM block generated based on the second check code and the OAM message.
  • the second check code is carried in the first
  • the transmission of a type of OAM block can ensure the continuous transmission of the second check code. If the bearer is carried in the second type of OAM block sent on demand, the random check is large, resulting in the calibration based on the second check code. Randomness and instability of the test.
  • this embodiment provides an OAM message transmission method, including:
  • Step S210 Receive a data stream
  • Step S220 Extract an OAM block from the data stream, where the OAM block is a code block that replaces a free block in the original data stream.
  • the OAM message transmission method provided in this embodiment is a method applied to a receiving device.
  • the data stream in this embodiment carries the OAM block.
  • the receiving device can be an SPN device.
  • the data stream is parsed, and the OAM block in the data stream may be identified according to an encapsulation format of the OAM block and/or a type field of the OAM block.
  • the OAM block is extracted in step S220.
  • the OAM block replaces the free block in the original data stream, i.e., the location occupied by the OAM block is the location occupied by the free block in the original data stream.
  • the same has the advantages of high effective utilization of transmission resources and strong compatibility with the prior art.
  • the method further includes:
  • the OAM block When the OAM block includes a sequence number, the contents of the plurality of OAM blocks are assembled according to the sequence number to obtain an OAM message corresponding to the plurality of associated OAM blocks.
  • OAM block When an OAM block carries a sequence number, or when the sequence number field is not empty, multiple OAM blocks are received according to the sequence number, and the contents of multiple OAM blocks are assembled according to the sequence number to obtain complete correctness. OAM message.
  • the method further includes:
  • the transmission quality of the nth transmission period is determined according to the comparison result.
  • the second check code is extracted in the OAM block of the last m transmission periods, and the second check code is used to compare with the locally generated third check code to complete the evaluation of the transmission quality of the nth transmission period.
  • the extracting the second check code from the OAM block of the n+mth transmission period includes:
  • the OAM block carrying the second check code further carries a number field indicating the number of multiple associated OAM blocks corresponding to one OAM message.
  • the method further includes:
  • this embodiment provides an operation management and maintenance OAM message transmission device, including:
  • the obtaining unit 110 is configured to acquire an OAM block generated based on the OAM message
  • the replacing unit 120 is configured to replace the free block in the data stream by using the OAM block;
  • the sending unit 130 is configured to send a data stream carrying the OAM block.
  • the transmission device provided in this embodiment may be a sending device of the OAM block.
  • the obtaining unit 110 may be a receiving interface, and may receive an OAM block that has been generated from another device, or the acquiring unit 110 may correspond to a processor, and may generate the OAM block based on the OAM message.
  • the replacement unit 120 may correspond to a processor that replaces a free block in a data stream received from a client with the OAM block.
  • the sending unit 130 may correspond to a sending interface, for example, a FlexE interface, and may be used to send a data stream carrying an OAM block.
  • a sending interface for example, a FlexE interface
  • the OAM block comprises: a first type of OAM block transmitted periodically and/or a second type of OAM block transmitted on demand.
  • the replacement unit 120 can be configured to perform at least one of the following:
  • the second type of OAM block is replaced with any one of the free streams in the data stream.
  • the first type of OAM block is an OAM block generated based on daily periodic maintenance; the second type of OAM block is an OAM block generated based on a trigger event, or an OAM block generated based on the indication.
  • the first type of OAM block includes: a connectivity detection block, a signal quality check block, an indication block of a failure of a client signal local end, an indication block of a client signal remote failure, a power consumption indication block of a client signal, and a remote end. At least one of the defect indication block and the remote error indication block.
  • the second type of OAM block includes: an automatic protection switching block, a client signal type indication block, a connectivity verification block, a one-way delay measurement block, a two-way delay measurement block, and a two-way delay measurement response block. one of them.
  • the obtaining unit 110 may be configured to acquire an independent OAM block when the data length of the OAM message is not greater than the bearable data length of the OAM block.
  • the obtaining unit 110 may be further configured to: when the data length of the OAM message is greater than the bearable data length of the OAM block, acquire multiple associated OAM blocks corresponding to the OAM message;
  • the one of the associated OAM blocks is a part of the message content that carries the OAM message.
  • Each of the associated OAM blocks carries a sequence number corresponding to the content of the message carried by the associated OAM block.
  • the replacement unit 120 may be configured to combine the chronological order and/or the transmission priority of the OAM block to select the OAM block to replace the free block according to a predetermined policy.
  • the replacing unit 120 may be configured to replace the free block by sequentially selecting an OAM block according to the chronological order if the number of OAM blocks is not greater than the number of the free blocks.
  • the replacing unit 120 may be configured to: if the number of OAM blocks is greater than the number of the free blocks, select an OAM block with a higher priority to replace the free block according to different sending priorities; and/or, if The number of the OAM blocks is greater than the number of the free blocks, and the priority of the to-be-transmitted OAM blocks is the same, and the OAM blocks are selected according to the chronological order to replace the free blocks.
  • the OAM block includes at least one of the following fields:
  • a sending priority field configured to indicate a sending priority of the OAM block
  • a first check field configured to carry a first check code, where the first check code is used to check the OAM block
  • a message field used to carry the message content of the OAM message is
  • the acquiring unit 110 is specifically configured to acquire an OAM block according to an encapsulation format of a predetermined type of block, where the OAM block encapsulates a code block that is a message content of the OAM message in a field as a basic unit.
  • the predetermined type of block is an O block, and the O block includes 8 bytes, which are 0th to 7th bytes, respectively;
  • the acquiring unit 110 is specifically configured to acquire an OAM block encapsulated according to an encapsulation format of the O block, where the message content of the OAM message is added to the first to third bytes and the fifth to seventh of the O block. In bytes.
  • the obtaining unit 110 is configured to obtain an OAM block based on the second check code and the OAM message, where the second check code is a code block based on the nth transmission period.
  • the generated OAM block is used to replace the free block of the n+mth transmission period; n is a positive integer; m is a positive integer.
  • the OAM block includes: a first type of OAM block that is sent periodically, and/or a second type of OAM block that is sent as needed; and the obtaining unit 110 is configurable to be based on the second a check code and the first type of OAM block generated by the OAM message.
  • the embodiment provides a transmission device for an OAM message, including:
  • the receiving unit 210 is configured to receive a data stream
  • the extracting unit 220 is configurable to extract an OAM block from the data stream, wherein the OAM block is a code block that replaces a free block in the original data stream.
  • the receiving unit 210 may correspond to a receiving interface, for example, a FlexE interface, and may be configured to receive a data stream carrying an OAM block.
  • the extracting unit 220 may be corresponding to a processor and may be configured to extract the OAM block from a data stream.
  • the data stream carrying the OAM block in this embodiment is generated by replacing the free block in the data stream that does not carry the OAM block.
  • the transmitting device further includes:
  • the assembling unit may be corresponding to the processor, and the cocoa is configured to, when the OAM block includes the serial number, assemble the content of the multiple OAM blocks according to the serial number to obtain the OAM message corresponding to the multiple associated OAM blocks.
  • the extracting unit 220 may be further configured to extract a second check code from the OAM block of the n+mth transmission period;
  • the transmission device further includes:
  • a checking unit configured to compare the second check code with a third check code generated by the local code block based on the nth transmission period
  • the determining unit is configured to determine a transmission quality of the nth transmission period according to the comparison result.
  • the check unit and the determining unit may correspond to a processor.
  • the processor may be a central processing unit, a microprocessor, a digital signal processor, an application processor, a programmable array, an application specific integrated circuit, or the like, and has information processing devices and/or structures.
  • the embodiment provides an electronic device, which may be the foregoing sending device, receiving device, or control device, including: a transceiver 310, a memory 320, a processor 330, and the transceiver.
  • the computer program 340 on the processor 310 and executed by the processor 330;
  • the processor 330 is connected to the transceiver 310 and the memory 320 respectively for controlling the information transmission and reception of the transceiver 310 and the information storage of the memory 320 by the execution of the computer program 340. And implementing the foregoing one or more technical solutions to provide an OAM message transmission method, for example, performing an OAM message transmission method applied to a transmitting device, or performing an OAM message transmission method applied to the receiving device.
  • the transceiver 310 may correspond to a wired interface or a wireless interface; the wired interface may be a cable interface or a cable interface.
  • the wireless interface can be a transceiver antenna.
  • the processor 330 can be a central processor 330, a microprocessor 330, a digital signal processor 330, an application processor 330, a programmable array or an application specific integrated circuit, or the like.
  • the processor 330 may be connected to the transceiver 310 and the memory 320 through a communication bus such as an integrated circuit bus, and control the transceiver 310 by reading and executing a computer program stored in the memory 320.
  • the information is transmitted and received and the information of the memory 320 is stored, and the OAM message transmission method provided by one or more of the foregoing technical solutions is implemented.
  • the embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a computer program, and the computer program is executed by the processor, and executes and implements the foregoing one or more technical solutions to provide a data transmission method, for example, The data transmission method applied to the transmitting device is performed, or the data transmission method applied to the receiving device is performed, and at least the OAM message transmission method as shown in the drawing can be executed.
  • the computer storage medium provided by the embodiment of the present invention includes: a mobile storage device, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
  • the medium of the program code can be a non-transitory storage medium.
  • the non-transitory storage medium herein may also be referred to as a non-volatile storage medium.
  • the SPN channel layer When the SPN channel layer is multiplexed and demultiplexed between the SPN client layer and the channel, the OAM is inserted/extracted as needed, and the client layer service is not perceived.
  • the SPN channel T is enabled to enable/disable the OAM function through the transmission of the OAM message ( It can be enabled/disabled for each OAM, and OAM insertion/extraction is not performed when enabled.
  • an OAM message is inserted or extracted in the FlexE link layer (corresponding to the SPN channel layer), and the OAM message may be inserted in an OAM block having a data length of 66 bits.
  • the user service is not aware. It is required to replace the idle block in the service flow when the OAM message is inserted, the idle block after the OAM is extracted, and the OAM transmission frequency and insertion.
  • the number needs to consider the availability of idle resources, factors considered include:
  • T is absolute time and can set different transmission periods.
  • the set transmission period is:
  • the OAM transmission on the sending side can be set to the following period.
  • the default is 10s:
  • the OAM message transmitted by the SPN channel needs to have a cyclic check code (CRC) check mechanism, and only the OAM with the correct CRC check is extracted.
  • CRC cyclic check code
  • the CRC here may be the first check code described above, and only the check code for verifying the code block.
  • the OAM message transmission requirements of the SPN channel need to refer to the IEEE802.3-2015 standard.
  • the support functions of the SPN channel OAM are as follows:
  • delay measurement including: one-way delay measurement (1DM) and/or two-way delay measurement (2DM);
  • the SPN channel OAM needs to have the ability to expand.
  • the flow chart of the OAM message transmitted by the SPN channel can be as shown in FIG. 10:
  • the SPN After receiving the data stream from the client, the SPN inserts the OAM block in the free block that does not carry the message in the data stream, and then sends the OAM block, so that the data stream carries the transmission of the OAM block, thereby improving the effective utilization of the resource, and It is compatible with the transmission of business data of the user layer, and the user does not feel it.
  • the SPN channel OAM adopts a mechanism of replacing the free block.
  • the fixed period OAM is periodically transmitted during the time T+ ⁇ T, and the OAM without the fixed period is transmitted at the position where the free block needs to be transmitted and has a free block.
  • the definition of the OAM block of the SPN channel layer can be as follows:
  • the SPN channel layer OAM message is carried by a 66-bit control block, and the default format specification of the 66-bit control block is shown in FIG.
  • the SPN channel layer OAM block is distinguished by the O code in the 0x4B control block.
  • the O code defaults to 0xC and needs to be supported by the O code.
  • the SPN channel layer OAM uses the 6 data (D) blocks in the control block to carry the OAM message, as shown in FIG. 12 .
  • 0x4B 8 bits, block type, indicating that the block is an O code type
  • Resv field 2 bits in total, reserved field, default is 0b00;
  • Type field a total of 6 bits, identifying different function types for different operation and maintenance management
  • Value field a total of 32 bits, the content of a specific type of OAM message
  • C code field a total of 4 bits, the default is 0xC, support settings, indicating that the SPN channel layer supports OAM message transmission;
  • Serial number (Seq) field A total of 4 bits, which identifies the sequence number of multiple OAM blocks used in the same OAM function or OAM message. Seq cannot be outside the value defined in this specification, otherwise it is an illegal block.
  • Check field for example, CRC4 field: 4 bits total, 4 bit CRC check for the OAM block (except CRC4) transmitted by the SPN (synchronization header does not participate in the check); all operation and maintenance management (OAM) blocks are only Valid when the CRC check is correct. Algorithm polynomial: X4+x+1; initial value 0. All Operation and Maintenance Management (OAM) blocks are only valid if the CRC is correct.
  • the check code may be a 4-bit CRC, referred to as CRC4.
  • CRC4 perform CRC check on data field 1 (Data1) to data field 6 (Data6) of the SPNOAM block (except CRC4) :
  • Data1 data field 1
  • Data6 data field 6
  • OAM Operation and Maintenance Management
  • the position of the CRC result [X4:X0] in the code block is [2nd bit: 65th bit]. All Operation and Maintenance Management (OAM) BLOCKs are only valid if the CRC is correct.
  • the transmission order of all OAMs is consistent with the standard.
  • 66 bits of the OAM block are arranged once from the 0th bit to the 65th bit, and the 0th bit is transmitted first, that is, the low bit is first and the high bit is after.
  • the encoding order of the bytes corresponds to the high and low bits.
  • the 7th bit of the 0x4B except the sync header is placed at the 9th bit in the 66-bit block; the 0th bit except the sync header is at 66 bits.
  • the placement position in the code block is the position of the second bit.
  • OAMs The transmission order of all OAMs is consistent with the standard (OIF FlexE 2.0 draft Figure-17 specifies 66 bit block bits 0-65, data part bit 0 is sent first, that is, the low bit is first, the high bit is after, and the CRC part bit 3 is sent first. That is, the high position is in the front).
  • the SPN channel layer OAM block is divided into the following categories:
  • OAM type in the fixed reference period, mainly including CC (connectivity check), BIP (BIP check), CS_LF (customer signal local end failure), CS_RF (customer signal remote failure), CS_LPI (customer signal low work) Consumption indicator).
  • CC connectivity check
  • BIP BIP check
  • CS_LF customer signal local end failure
  • CS_RF customer signal remote failure
  • CS_LPI customer signal low work Consumption indicator
  • Event trigger insertion OAM type mainly includes APS (automatic protection switching) and CS (customer signal indication). Such OAM is triggered by a related event. When an event occurs, the OAM block is triggered to be sent immediately. Normally, it is sent in a specified period, and the period is usually greater than or equal to one second.
  • On-demand OAM functions including CV (connectivity verification), 1DM (one-way delay measurement), 2DMM (two-way delay measurement), and 2DMR (two-way delay measurement response).
  • On-demand OAM function Such OAM blocks need to be enabled, inserted as needed in the FlexE Client, or continuously inserted at a specified period. The supported period is usually greater than or equal to 1 second.
  • the extension mechanism of the transport OAM block of the SPN channel layer can be as follows:
  • the OAM message of the SPN channel layer is transmitted using a 66-bit OAM block and transmitted in the TLV format. Due to the limited OAM messages that can be carried by an Ethernet block, some OAM functions need to be split into multiple blocks for transmission.
  • the OAM block of the SPN channel layer may include: a single block mode and a multi block mode.
  • the monolithic method here is one of the aforementioned independent OAM blocks.
  • the multiple block mode here may be one of the aforementioned associated OAM blocks.
  • the single block approach uses a separate block to represent a complete OAM function.
  • the multi-block approach uses multiple block combinations to represent a complete OAM function.
  • the OAM block of the SPN channel layer has a transmission priority.
  • the SPN channel layer OAM needs to distinguish between transmission priority transmission.
  • the OAM is divided into two high and low transmission priorities.
  • the first transmission priority block is sent first. That is, the transmission priority is a transmission transmission priority, which is related to the importance degree and real-time requirement of the OAM function pointed by the OAM message.
  • One OAM block can be inserted every 16K block
  • BIP calculation put the second BIP check result; all code blocks between the two BIP overhead blocks (including data block, free block, Orderset, client layer OAM, etc.) Configuration).
  • APS double-end needs supplementary confirmation mechanism and transmission period (fast frame 3 frames: 16K blocks, then send in cycles per second).
  • OAM version number is verified.
  • the type is defined separately (for both ends and some for reservation).
  • the OAM function achievable by the OAM message of the SPN channel layer can be defined as follows:
  • the OAM messages of the channel layer of the SPN are classified into three types: alarm-related OAM messages, performance-related OAM messages, and other OAM messages.
  • the OAM function can support CC, CV, REI, RDI, DM, BIP, APS, CSF, CS, AIS, LCK, LM, TEST, LB, LT and other functions.
  • the OAM message is passed through a 66-bit block, which follows the 64/66 encoding specification, uses the "C" block format, and is extended (green font): the first field uses 0x4B as the block control type, and the fifth field The first 4 bits are identified by 0xC (binary is 0b1100) as the OAM block.
  • the specific format is as follows:
  • the TPYE uses 6 bits to indicate the OAM message type
  • SEQ is the serial number value, counting from 0 to 15 counts.
  • CRC4 (polynomial X4+X+1) is the result of the check, and the result of checking the 60 bits of field 0---field 7 in the OAM block.
  • a total of 4 fields D1-D4 are used to deliver OAM messages.
  • the Resv part is a reserved field.
  • the first sending priority OAM message is sent first, and then the second sending priority OAM message is sent.
  • the OAM with the same transmission priority is sent, it needs to wait for the previous OAM message to be sent before sending the next OAM message.
  • the specific rules can be as shown in Figure 13.
  • the OAM block period can be as shown in FIG. OAM blocks are inserted in cycles of respective blocks, and different OAM blocks are independent of each other.
  • the transmission priority of the A block is higher than the transmission priority of the B block; the transmission priority of the B block is higher than the transmission priority of the L block.
  • the A block, the B block, and the L block are all one type of OAM block.
  • the OAM block with the highest transmission priority is preferentially inserted into the free block according to the transmission priority, so the first insertion is performed in FIG. Block A, insert B block, and finally insert L block.
  • the OAM block may include: a basic block and an expansion block that is modified or expanded on the substrate block.
  • the format of the basic block can be as follows:
  • the transmission priority of the basic block is the first transmission priority.
  • the basic block may be a periodically transmitted OAM block with a minimum interval of 16K blocks, which may be configured as 64K blocks, 256K blocks, or 512K blocks.
  • the duration of a block is fixed.
  • the basic block can be applied as follows:
  • CS_LF When the client side signal detection of the FlexE channel has a local defect, CS_LF is set to 0x1. When the client signal is normal, CS_LF is set to 0x0. When the client layer of the SPN is used to indicate the local defect (LF), Idle to replace, the sink restores LF.
  • CS_RF When the client side signal detection of the FlexE channel detects a remote defect, CS_RF is set to 0x1. When the client signal is normal, CS_RF is set to 0x0. When the SPN client layer is used for RF, it is replaced with idle. Restore RF.
  • CSF_LPI When CSF_LPI is used to indicate that the SPN client layer is an LPI, it is replaced with idle, and the sink restores the LPI.
  • the FlexE channel When the FlexE channel detects a BIP error, it carries the detected number of errors in the reverse REI.
  • the CC/BIP block carries the check result of the previous BIP check interval, and the data block, idle, and Orderset between the two BIP overhead blocks need to participate in the BIP check.
  • the LPI does not participate in the BIP check
  • the SPN channel OAM block supports whether the configuration participates in the BIP check.
  • Block verification adopts BIP8 mode, and the verification rules are as follows:
  • the block format definition of the APS block can be as follows:
  • APS Automatic Protection Switching
  • the APS information is as follows:
  • the payload structure of the APS protocol packet is shown in the following table:
  • the sending priority of the APS block is a first sending priority.
  • the AAM block may be periodically transmitted by the AAM block.
  • the interval is 16K blocks, and the three APS blocks are continuously inserted in the cycle. Normally, one APS block is sent per second for verification.
  • the application of the APS block can be as follows:
  • the trigger conditions for APS protection switching include:
  • the sending and receiving of APS messages may include:
  • the APS information is inserted at the source end of the protection domain, transmitted by the protection path, extracted at the sink end, and the intermediate path reception is ignored.
  • the APS information is sent once every second, but when the working status changes, three APS messages must be sent continuously in about 16384 66-bit blocks. The first correct APS message is received. Corresponding actions, so that even if one or two APS information is lost or damaged, a fast protection switching can be guaranteed. The time interval for subsequent APS information transmission is restored to 1 s. If the endpoint does not receive a valid APS message, the previous valid information received is available.
  • An OAM block that executes a CV may be referred to as a CV block.
  • the block format definition of a CV block can be as follows:
  • the connectivity check function works in the active mode.
  • the CV information is composed of the source point identification information SAPI and the sink identification information DAPI.
  • SAPI and the DAPI are 16-length strings, and the SAPI format and the DAPI format definition refer to G.709.
  • the SPN channel source and sink nodes periodically send CV information, and the sink maintenance point monitors the information to detect whether the SPN channel has an incorrect connection fault.
  • the multi-block mode carries the CV block.
  • Seq is 0x0, 0x1, 0x2, 0x3, the carried value represents SAPI; when Seq is 0x4, 0x5, 0x6, 0x7, the carried Vlaue represents DAPI.
  • the transmission priority of the CV block is the second transmission priority; the transmission priority corresponding to the second transmission priority is lower than the transmission priority of the first transmission priority.
  • the CV block is a periodically transmitted OAM block, and the sending period may be: a default period of 10 seconds, or may be set to 1 second, 10 seconds, and 1 minute.
  • the application of the CV block can be as follows:
  • Both ends of the FlexE channel enabled with the CV function periodically send CV blocks to the peer end, and carry SAPI and DAPI in multiple block combinations.
  • the receiver After receiving the complete CV block with sequence numbers 0 to 7, the receiver will check the SAPI and DAPI and the local channel. If they are inconsistent, the connectivity verification error is reported and the alarm is reported. If they are consistent, it means that the connectivity rigidity is verified correctly and the alarm is cancelled.
  • An OAM block that performs CS can be referred to as a CS block.
  • the CS block format definition can be as follows:
  • the transmission priority of the CS block is the second transmission priority; the CS block is an OAM block transmitted periodically.
  • the period can be sent immediately when the customer signal changes, and then maintained for a longer period (default 10 seconds), periodically sent, and the period can be set to 1 second, 10 seconds, 1 minute.
  • An OAM block that performs 1DM can be referred to as a 1DM block.
  • the 1DM format definition can be as follows:
  • the 1DM block adopts a multi-block mode.
  • Seq is 0x0
  • the carried Vlaue represents the lower 4 bytes of the timestamp.
  • Seq is 0x1
  • the carried Vlaue represents the upper 4 bytes of the timestamp.
  • Description: B0 is the lowest field of the timestamp.
  • the field definition of the 1DM block can be as follows:
  • the transmission priority of the 1DM block is the second transmission priority, which is an OAM block that is periodically sent.
  • the period may be 10 seconds by default, or may be set to 1 second, 10 seconds, or 1 minute. Support is turned on on demand.
  • the application of the 1DM block can be as follows:
  • the 1DM sender writes the local timestamp to the 1DM packet timestamp field.
  • the 1DM receiving end After receiving the 1DM block, the 1DM receiving end records the local timestamp as the 1DM receiving timestamp, and calculates the 1DM receiving timestamp-1DM sending timestamp to obtain the one-way delay value.
  • An OAM block that performs 2DMM may be referred to as a 2DMM block.
  • the block format definition of the 2DMM block can be as follows:
  • the 2DMM block can be carried in multiple blocks.
  • Seq is 0x0
  • the carried Vlaue represents the lower 4 bytes of the timestamp
  • Seq is 0x1
  • the carried Vlaue represents the upper 4 bytes of the timestamp
  • the sending priority of the 2DMM block may be the second sending priority, which may be an OAM block sent periodically, and the default period is 1 second, and the period may also be set to 1 second, 10 seconds, and 1 minute. Support is turned on on demand.
  • An OAM block that performs 2DMR may be referred to as a 2DMR block.
  • the format definition of the 2DMR block can be as follows:
  • 2DMR blocks are carried in multiple blocks:
  • the field definition of the 2DMR block can be as follows:
  • the forward transmission timestamp is a timestamp of the transmission time sent by the 2DMM block from the transmitting end TX
  • the backward receiving timestamp is a timestamp of the receiving time of the 2DMM block reaching the receiving end RX.
  • the backward sending timestamp is a timestamp of the sending moment of the 2DMR block returned by the receiving end to the transmitting end.
  • the transmission priority of the 2DMR block is the second transmission priority, which may be an OAM block that is periodically transmitted, or may not be an OAM block that is periodically transmitted. For example, it may be sent immediately after receiving the 2DMM block.
  • the application of the 2DMR block can be as follows:
  • the initiator sends a DMM block carrying a local timestamp
  • the two-way delay reflection end receives the DMM block, copies the timestamp in the DMM to the forward transmission timestamp of the DMR message, and writes the local receiving timestamp and the local sending timestamp in the DMR message.
  • the two-way delay reflector sends a DMR message to the initiator
  • the initiator After receiving the DMR block, the initiator receives (DMR reception timestamp – DMM transmission timestamp/Tx_f_TS)-(DMR transmission timestamp/Tx_b_TS–DMM reception timestamp/Rx_b_TS) to obtain a two-way delay value.
  • the OMA block that performs BIP8 can be a BIP8 block.
  • BIP8 is used to detect the signal quality of the client channel, and an average of 16284 66-bit code blocks are sent to transmit a BIP8 calculation result.
  • the calculation coverage of BIP8 is from the first new block after the last BIP8 information, to all code blocks ending with the BIP8 code block, including S block, D block, T block, O block, free block, and the like.
  • the result of each BIP calculation is placed in the next BIP code block (the third code block).
  • the SPN channel layer OAM block participates in the BIP check by default and can be configured not to participate in the BIP check.
  • the identification of the OAM is performed based on the characteristic information of the OAM (0x4B+0xC).
  • Step 1 Calculate the BIP8 content of each code block, and XOR the 8 bits of the 7th byte in a code block to obtain the BIP[7] content, and the 6th byte of the code block.
  • the 8 bits are XORed bitwise to obtain the BIP[6] content, so analogy, the 8 bits of the 0th byte in the code block are XORed bitwise to obtain the BIP[0] content.
  • Step 2 XOR the BIP information values corresponding to all code blocks in a period to obtain the final BIP8 value.
  • 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 invention 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 above integration
  • 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.

Abstract

本发明实施例公开了一种OAM消息传输方法、传输设备及存储介质。所述OAM消息传输方法，包括：获取基于OAM消息生成的OAM块；利用所述OAM块替换数据流中的空闲块；发送携带有所述OAM块的数据流。

Description

OAM消息传输方法、传输设备及存储介质
相关申请的交叉引用
本申请基于申请号为201710861368.0、申请日为2017年09月21日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本发明涉及通信技术领域但不限于通信技术领域，尤其涉及一种操作管理维护(Operation Administration and Maintenance，OAM)消息传输方法、传输设备及存储介质。
背景技术
OAM消息为运营商对网络进行日常的操作、管理和维护中所需要传输的各种信息。如何实现OAM消息的传输，使得对用户侧的感知程度最小，以提升用户体验，且不用分配专用的传输资源来传输OAM消息是现有技术亟待解决的问题。
发明内容
本发明实施例期望提供一种OAM消息传输方法、传输设备及存储介质。
为达到上述目的，本发明的技术方案是这样实现的：
第一方面，提供一种操作管理维护OAM消息传输方法，包括：
获取基于OAM消息生成的OAM块；
利用所述OAM块替换数据流中的空闲块；
发送携带有所述OAM块的数据流。
第二方面，提供一种操作管理维OAM消息传输方法，包括：
接收数据流；
从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
第三方面，提供一种操作管理维护OAM消息传输设备，包括：
获取单元，配置为获取基于OAM消息生成的OAM块；
替换单元，配置为利用所述OAM块替换数据流中的空闲块；
发送单元，配置为发送携带有所述OAM块的数据流。
第四方面，提供一种OAM消息的传输设备，包括：
接收单元，配置为接收数据流；
提取单元，配置为从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
第五方面，提供一种传输设备，包括：收发器、存储器、处理器及存储在存储器上并由处理器执行的计算机程序；
所述处理器，分别与所述收发器及存储器连接，用于通过执行所述计算机程序，实现第一方面任一项提供的OAM消息传输方法，或执行第二方面任一项提供的OAM消息传输方法。
第六方面，提供一种计算机存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序被执行后，能够实现第一方面任一项提供的OAM消息传输方法，或执行第二方面任一项提供的OAM消息传输方法。
本发明实施例提供的OAM消息传输方法、传输设备及存储介质，将OAM消息块生成OAM块，利用OAM块替换数据流中的空闲块，这样的话，就生成了携带有OAM块的数据流。而原始的空闲块是不携带有需要接收方接收的信息内容的数据块，而本发明实施例中替换掉空闲块，利用传 输空闲块的传输资源传输OAM块。第一方面，显然不用再专门分配传输OAM块的传输资源，故提升了传输资源的有效利用率。第二方面，不用专门分配传输资源，且通过空闲块的替换，并不增加数据流的长度等参数且不会导致数据流传输的其他改变，从而与现有技术的兼容性强，具有传输简便的特点。
附图说明
图1为本发明实施例提供的第一种OAM消息传输方法的流程示意图；
图2为本发明实施例提供的O块的结构示意图；
图3本发明实施例提供的第二种OAM消息传输方法的流程示意图；
图4为本发明实施例提供的第三种OAM消息传输方法的流程示意图；
图5为本发明实施例提供的一种传输设备的结构示意图；
图6为本发明实施例提供的另一种传输设备的结构示意图；
图7为本发明实施例提供的再一种传输设备的结构示意图；
图8为本发明实施例提供的一种OAM块的插入和提取示意图；
图9为本发明实施例提供的一种OAM块的传输示意图；
图10为本发明实施例提供的另一种OAM块的替换示意图；
图11为本发明实施例提供一种OAM块的结构示意图；
图12为本发明实施例提供的另一种OAM块的结构示意图；
图13为本发明实施例提供的第一种OAM块替换空闲块的示意图；
图14为本发明实施例提供的第二种OAM块替换空闲块的示意图；
图15为本发明实施例提供的第一种OAM块替换空闲块的示意图；
图16为本发明实施例提供的第二种OAM块替换空闲块的示意图。
具体实施方式
以下结合说明书附图及具体实施例对本发明的技术方案做进一步的详细阐述。
如图1所示，本实施例提供一种操作管理维护OAM消息传输方法，包括：
步骤S110：获取基于OAM消息生成的OAM块；
步骤S120：利用所述OAM块替换数据流中的空闲块；
步骤S130：发送携带有所述OAM块的数据流。
在本实施例中所述OAM消息传输方法，是应用于OAM消息的发送设备中的。
在本实施例中，可由灵活以太网(FlexE)的切片分组网(SPN)通道层来执行上述操作。所述SPN通道层又可以称之为FlexE路径层。
所述数据流可为来自用户客户端的数据流，所述数据流中通常插入有空闲块，以协调收发两端的收发频率不一致的问题。例如，若发送端的发送速率高于接收端接收速率，则原本的空闲块可被替换为携带有数据内容的数据块，从而减少发送端的数据堆积，若发送端的发送速率低于接收端的接收速率，可以增加空闲块，避免数据流的断流，从而维持数据流的持续传输。所述数据流又可以称之为业务数据流。
在步骤S110中会根据OAM消息的消息内容，获取有携带OAM消息的至少部分消息内容的OAM块。这里的OAM块的获取，包括：从控制设备接收，也包括：自身根据OAM消息生成。
这里的OAM块的块长度与所述空闲块的块长度是相等的。所述块长度为对应的块包括的比特长度。例如，所述空闲块为一个66比特的块，则所述OAM块也为一个66比特的块。这样的话，可以确保利用OAM块替换掉空闲块之后，数据流的数据量不会发生变化，OAM块替换的过程中不会 覆盖到其他承载有信息的非空闲块。典型的非空闲块，可包括：标识一个传输周期起始位置的起始(S)块，标识一个传输周期结束位置的结束(T)块及携带有数据内容的数据(D)块。
在本实施例中，所述OAM块可是基于类型、长度及属性值(TLV)格式封装的，即在OAM块的预定位置封装有指示其为OAM块的类型字段，则接收端检测到该字段时，就知道当前接收的块为OAM块，并且知道该OAM块的数据长度，及属性值对应的字段或比特。所述属性值可为用于携带数据内容的字段和/或比特。
在本实施例中，所述OAM块可以携带有一个或多个OAM功能的指示字段；当携带有OAM功能的指示字段时，一个OAM块的发送及可以触发执行多个OAM功能，所述OAM功能可为与OAM相关的任何功能，例如，连通性检测、时延检测和/或各种校验功能等，一个OAM块实现多种OAM功能的触发，具有OAM块的码块效率大的特点。
在本实施例中，所述空闲块为未携带有需要接收方接收的信息内容的码块。在所述空闲块中携带有指示该码块类型的类型字段，这样接收端或SPN通道接收到之后，可以通过提取码块类型字段，确定出当前码块是否为空闲块。
在本实施例中，若有OAM块需要发送，且检测到了数据流中存在空闲块，可以将生成的OAM块替换掉空闲块。这样的话，就简便的实现了利用已有的数据流，例如，业务数据流中的空闲块对应的传输资源，来传输OAM消息，故不用专门配置传输OAM消息的传输资源，提升了传输资源的有效利用率；与此同时，对于客户端而言是无感的，且与现有技术的兼容性强。
在本实施例中，所述OAM块包括：按周期发送的第一类OAM块和/或，按需发送的第二类OAM块。在本实施例中所述OAM块的周期，可以称之为OAM周期。
所述步骤S120可包括：
当根据所述周期达到所述第一类OAM块的发送时刻时，且在所述数据流中存在空闲块，则将所述空闲块中替换为所述第一类OAM块。第一类OAM块每个一个OAM周期就需要发送预定个数的OAM块，这里的预定个数可为1、2或3等正整数的取值。根据所述OAM周期可以确定出发送时刻，如发送时刻SPN通道层接收的数据流中恰好存在空闲块，则将第一类OAM块替换发送时刻的空闲块，以尽可能的实现第一类OAM块的精确周期发送，减少第一类OAM块发送周期的偏移。
所述步骤S120，还可包括：
当根据所述周期到达所述第一类OAM块的发送时刻时，在所述数据流中不存在空闲块，则等待所述数据流的下一个空闲块，利用所述第一类OAM块替换所述下一个空闲块。若第一类OAM块的发送时刻，在数据流中不存在空闲块，则等待数据流的传输知道接收到下一个空闲块，则将下一个空闲块替换为所述第一类OAM块。
所述步骤S120还可包括：
当有需要发送的第二类OAM块发送时，将所述第二类OAM块替换所述数据流中任意一个空闲块。
第二类OAM块是有需求时才发送的，自身并没有一定的发送周期。若一旦形成，就开始检测当前接收的数据流中是否有空闲块，若有空闲块直接用所述第二类OAM块替换。
在一些实施例中，所述第一类OAM块，为基于日常周期性维护产生的OAM块；所述第二类OAM块，为基于触发事件产生的OAM块，或基于指示产生的OAM块。
例如，所述第一类OAM块包括：连通性检测块，信号质量校验块、客户信号本端失效的指示块、客户信号远端失效的指示块、客户信号的功 耗指示块、远端缺陷指示块、远端误码指示块的至少其中之一。
所述连通性检测块，用于触发接收端和/或发送端执行传输链路的连通性检测。
信号质量检测块，用于触发接收端和/或发送端执行信号质量的检测，例如，检测误码率和/或误比特率等。
所述客户信号本端失效的指示块，用于指示发送该OAM块的客户信号失效。这里的客户信号为来自客户端的信号。
所述客户信号远端失效的指示块，用于指示对端的客户信号失效。
所述第二类OAM块，包括：自动保护切换块、客户信号类型指示块、连通性验证块、单向时延测量块、双向时延测量块、双向时延测量响应块的至少其中之一。
所述自动保护切换块，用于指示执行链路的自动保护切换操作，例如，基于自动保护协议进行链路保护和/或切换。
客户信号类型指示块，用于指示当前传输的客户信号的类型。
所述连通性验证块，用于指示进行传输链路的连通性验证的码块。
所述单向时延测量块，用于指示执行发送端到接收端，或者，接收端到发送端中单向链路的延时测量的码块。
所述双向时延测量块，用于由发送端的，用于触发双向链路的延时测量的码块。所述双向链路包括：发送端到接收端再由接收端到发送端的传输链路；
所述双向延时测量响应块，用于由接收端，用于响应双向链路的延时测量的码块。
在一些实施例中，所述OAM块按照触发执行的OAM功能，分为单一功能OAM块，和多功能OAM块。所述多功能OAM块中携带多个字段，这些字段携带用于触发执行不同OAM功能的字段，例如，所述字段可包括： 自动保护切换字段、客户信号类型指示字段、连通性验证字段、单向时延测量字段、双向时延测量字段、双向时延测量响应块的至少其中之一。
在一些实施例中，所述步骤S110可包括：
所述获取基于OAM消息生成的OAM块，包括：
当所述OAM消息的数据长度不大于所述OAM块的可承载数据长度时，获取独立OAM块。
在本实施例中，所述独立OAM块又可以单独OAM块，是承载有完整的一条OAM消息的码块。
所述数据长度为包括的比特总个数。所述OAM消息的数据长度，可为所述OAM消息包括的比特数；所述OAM块的可承载数据长度，可为所述OAM块中可以用于携带消息内容的比特数。例如，一个所述OAM块包括68个比特，其中，仅有48个比特可用于承载消息内容，若一个OAM消息的比特总数大于48个比特，则该OAM消息不能封装为独立OAM块。若该OAM消息的比特总数小于所述48个比特，则可以封装为所述独立OAM块。
这里的获取独立OAM块，可包括：从其他设备接收独立OAM块，也可包括：自身生成所述OAM块。
在另一些实施例中，所述步骤S120可包括：
当所述OAM消息的数据长度大于所述OAM块的可承载数据长度时，获取与所述OAM消息对应的多个关联OAM块；其中，一个所述关联OAM块为携带有所述OAM消息的部分消息内容；其中，每一个所述关联OAM块中携带有与所述关联OAM块携带的消息内容相对应的序列号。
在本实施例中，若一个条OAM消息的数据长度较大，单一的一个OAM块无法完全承载，则需要拆分成多个关联的OAM块来承载。为了方便接收端后续数据内容的拼装，在本实施例中会在关联OAM块中承载序列号，该 序列号是与其携带的消息内容相关的。例如，将一条OAM消息按照消息内容的连续性拆分为了S个内容段；其中，第s个内容段承载在第s个OAM块中，则第s个OAM块中携带有序列号，该序列号指向第s个内容段。这样的话，接收端接收到S个OAM块之后，会根据所述序列号拼装S个内容段，从而获得完整的且正确的OAM消息的消息内容。所述S为正整数；所述s为不大于所述S的正整数。在本实施例中了所述序列号携带在所述OAM的预定位置。
在一些实施例中，所述步骤S120可包括：
结合OAM块的时间顺序和/或发送优先级，按预定策略将所述OAM块替换所述空闲块。
所述OAM块的时间顺序可为：所述OAM块的生成时间顺序。
所述时间顺序还可为：获取到所述OAM块的获取时间顺序。
在本实施例中会结合时间顺序和/或发送优先级，按照预定策略选择OAM块替换所述空闲块。
例如，所述步骤S120可包括：
若OAM块的个数不大于所述空闲块的个数，根据所述时间顺序依次选择OAM块替换所述空闲块。
这里的OAM块的个数，当前时刻待发送的OAM的个数；所述空闲块的个数为当前待发送的数据流中检测到的空闲块的个数。
这里的根据所述时间顺序选择OAM块替换所述空闲块，可包括：
按照时间顺序，优先选择时间顺序在前的OAM块替换空闲块。
由于空闲块的个数较多，而待发送的OAM块的个数较少，这样的话，可以按照时间顺序依次替换数据流中的空闲块，这样的话，不但实现了OAM块的全部发送，且是按照时间顺序发送的。
若OAM块的个数大于空闲块的个数，根据优先级来选择替换空闲块的 OAM块。
所述步骤S120还可包括：
若OAM块的个数大于所述空闲块的个数，根据发送优先级不同，选择发送优先级高的OAM块替换所述空闲块。若当前待发送的多个OAM块的发送优先级不同，则优先发送高优先级的OAM块，故选择高优先级的OAM块替换数据流中的空闲块。
所述发送优先级可为OAM消息的消息内容重要程度、紧急程度及传输时延要求等参数中的一个或多个相关。
在另一些实施例中，所述步骤S120还可包括：若OAM块的个数大于所述空闲块的个数，且待发送OAM块的优先级相同，则根据时间顺序选择OAM块替换所述空闲块。
若当前待传输的多个OAM块中存在优先级相同的情况下，为了进一步解决冲突问题，则根据时间顺序选择时间顺序在前的OAM块替换空闲块。
在还有一些实施例中，所述步骤S120还可包括：
若OAM块的个数大于所述空闲块的个数，且OAM块的优先级相同，则随机选择OAM块替换所述空闲块，直至所有的OAM块发送完成。
在一些实施例中，所述OAM块包括：以下字段至少其中之一：
类型字段，用于指示OAM块类型；
发送优先级字段，用于指示OAM块的发送优先级；
序列号字段，用于指示OAM块的序列号；
第一校验字段，用于承载第一校验码，所述第一校验码用于对所述OAM块进行校验；
消息字段，用于承载OAM消息的消息内容。
在一些实施例中，所述OAM块至少包括第一类字段和第二类字段；其中，所述第一类字段为必要字段，所述第二类字段为可选字段。
在一些实施例中，所述第一类字段可包括：类型字段及消息字段。在另一些实施例中，所述第一类字段可包括：类型字段、消息字段及第一校验字段。
所述第二类字段可包括：序列号字段、发送优先级字段等。
例如，独立OAM块则可不包括序列号字段；所述关联OAM块则必须包括所述序列号字段。对于独立OAM块而言所述序列号字段为所述第二类字段，对于关联OAM块而言，所述序列号字段为所述第一类字段。
总之，所述第一类字段和第二类字段的区分，可以根据当前的OAM的属性来确定。所述属性可包括：OAM消息的消息内容及与其他OAM块之间的关联关系等其中的一个或多个。
在一些实施例中，所述OAM块还可包括：第二校验字段。所述第二校验字段携带有第二校验码，所述第二校验码可以用于对前m个传输周期传输的码块进行校验。
在一些实施例中，所述步骤S110可包括：
获取根据预定类型块的封装格式的OAM块，其中，所述OAM块是以字段为基本单位封装将所述OAM消息的消息内容的码块。
在本实施例中将OAM消息的消息内容封装到OAM块中时，是以字段为基本单元进行封装的。1个字段为8个比特。这样的话，不管数据流中的码块是32个比特的码块，还是66个比特的码块，都可以很好的兼容，从而不会出现封装的比特冲突问题。
在一些实施例中，所述预定类型块为O块，所述O块包括8个字节，分别是第0至第7个字节。在本实施例中，所述O块为预定格式的一种码块。
所述获取根据预定类型块的封装格式的OAM块，其中，所述OAM块是以字节为基本单位封装将所述OAM消息的消息内容的码块，包括：
获取根据O块的封装格式封装的OAM块，其中，所述OAM消息的消息内容被添加到O块的第1至3个字节及第5至第7个字节中。
图2所示为O块的一种码块格式，在图2中重复的数字0，1，2……9是对O块中的比特数进行计数的，显然在图2所示的O块中包括66个比特。所述O块包括66比特，其中，前两个比特为同步比特，通常为固定值“10”。O块的剩余64个比特被拆分为了8个字节，分别是D0、D1、D2、D3、D4、D5、D6及D7。第0个字节(D0)携带有指示该码块类型的类型字节，O块的类型值为0x4B，由该码块的第0个字节携带。第4个字节(D4)的前半个字节已被占用，仅剩余后半个字节。在本实施例中仅利用D1、D2、D3、D5、D6及D7来携带OAM消息的消息内容，或，仅利用D1、D2、D3、D5、D6及D7携带OAM块的内容。实现以8个比特即一个字节为基本单元，进行OAM块中内容的封装。
在本实施例中，如图2所示的第一行和第二行所示的为改造前的O块，改造前的O块的D5、D6及D7通常为全零的字段；而在本实施例中，若以O块的封装格式封装OAM块，则D5、D6及D7会携带OAM块的内容，具体可如图2的第三行所示。这样的话，接收端可以根据D5、D6及D7的携带内容，区分出当前接收到的O块是现有的O块，还是改造后的O块，即所述OAM块。
在本实施例中利用已有的O块的格式来封装OAM块，一方面不用为OAM块的封装设置专门的封装格式，从而实现简单，接收端也不用重新掌握一个全新的解析OAM块的解析方式，故与现有技术的兼容性强。另一方面，由于采用O块的封装格式来封装OAM块，且利用了现有的O块自身D5、D6及D7为全零的特点，方便接收端基于D5、D6及D7中的信息内容，区分原始的O块和改造后的O块，这样也利用O块的自身的特点，实现了改造前O块和改造后O块的区分，避免了混淆。
所述步骤S110，包括：
获取基于第二校验码和所述OAM消息的OAM块；其中，所述第二校验码为基于第n个传输周期的码块生成的；获取的所述OAM块，用于替换第n+m个传输周期的空闲块；n为正整数；m为正整数。
本实施例中所述传输周期是有别于OAM块的发送周期(即OAM周期)的。在本实施例中一个传输周期，发送端和接收端之间交互的码块数是一定的。
在一些实施例中，如图3所示，所述方法还包括：
步骤S101：根据第n个传输周期的码块的内容生成第二校验码；
所述步骤S110可包括步骤S111；所述步骤S111可包括：
根据所述第二校验码及所述OAM消息，生成包括所述第二校验码及所述OAM消息的至少部分内容的OAM块。
例如，在本实施例中，SPN通道层等网络设备，基于第n个传输周期内所有码块的内容，生成第二校验码；在第n+m个传输周期携带在OAM块中发送给接收端。
在另一些实施例中，携带有第二校验码的OAM块可以直接是在步骤S110中从其他设备接收的。
总之，由于OAM块中携带有第二校验码或是基于第二校验码生成的，本实施例提供的OAM消息传输方法，还可以用于传输第二校验码。所述第二校验码可为奇偶校验，例如，可为比特交织奇偶性(bit interleaved parity，BIP)用于接收端校验第n个传输周期内所有码块的接收正确性。
所述m为正整数，可选为1、2或3等取值。
在本实施例中，第二校验码是携带在第n+m个传输周期的数据流中发送的，这样的话，就给了所述第二校验码的足够生成时间，降低了生成所述第二校验码的性能要求，可以很好的与现有技术兼容。
在一些实施例中，所述OAM块包括：按周期发送的第一类OAM块，和/或，按需发送的第二类OAM块；
所述步骤S110可包括：
基于所述第二校验码和所述OAM消息生成的所述第一类OAM块。
在本实施例中，由于第一类OAM块的是周期性发送的，而第二校验码由于检验的持续性，也是需要周期性发送的，故将所述第二校验码携带在第一类OAM块中发送，可以确保第二校验码的持续发送，若承载在按需发送的第二类OAM块中，则可能会因为随机性较大，导致基于第二校验码的校验的随机性和不稳定性。
如图4所示，本实施例提供一种OAM消息传输方法，包括：
步骤S210：接收数据流；
步骤S220：从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
在本实施例中提供的OAM消息传输方法为应用于接收设备中的方法。
在本实施例中的数据流中是携带有OAM块的。所述接收设备可为SPN设备。接收到所述数据流之后，解析所述数据流，可以根据OAM块的封装格式和/或OAM块的类型字段，识别出数据流中的OAM块的。
在步骤S220中会提取出所述OAM块。该OAM块是替换了原始数据流中的空闲块的，即，所述OAM块占据的位置为原始的数据流中空闲块占据的位置。同样的具有传输资源的有效利用率高，与现有技术兼容性强的特点。
在一些实施例中，所述方法还包括：
当所述OAM块包括序列号时，根据所述序列号拼装多个OAM块的内容，以获得多个关联OAM块对应的OAM消息。
当一个OAM块中携带有序列号，或者，在序列号字段不为空时，则根 据序列号会接收到多个OAM块，会根据序列号依次拼装多个OAM块的内容，获得完整的正确的OAM消息。
在一些实施例中，所述方法还包括：
从第n+m个传输周期的OAM块中提取第二校验码；
将所述第二校验码与本地基于第n传输周期的码块生成的第三校验码比对；
根据比对结果，确定所述第n传输周期的传输质量。
在后m个传输周期的OAM块中提取第二校验码，该第二校验码可用于与本地生成的第三校验码进行比对，完成对第n传输周期的传输质量的评估。
在一些实施例中，所述从第n+m个传输周期的OAM块中提取第二校验码，包括：
从第n+m个传输周期的第一类OAM块中提取所述第二校验码。
在一些实施例中，携带有所述第二校验码的OAM块还携带有指示与一条OAM消息对应的多个关联OAM块的个数的个数字段。
所述方法还包括：
根据所述个数字段，确定关联OAM块是否接收完整，例如，是否出现接收的缺失等问题。
如图5所示，本实施例提供一种操作管理维护OAM消息传输设备，包括：
获取单元110，配置为获取基于OAM消息生成的OAM块；
替换单元120，配置为利用所述OAM块替换数据流中的空闲块；
发送单元130，配置为发送携带有所述OAM块的数据流。
本本实施例提供的传输设备，可为所述OAM块的发送设备。
所述获取单元110，可为接收接口，可以从其他设备接收已经生成的 OAM块，或者，所述获取单元110可对应于处理器，可自行基于OAM消息生成所述OAM块。
所述替换单元120可对应于处理器，将从客户端接收到的数据流中的空闲块替换成所述OAM块。
所述发送单元130可对应于发送接口，例如，FlexE接口，可用于发送携带有OAM块的数据流。
在一些实施例中，所述OAM块包括：按周期发送的第一类OAM块和/或，按需发送的第二类OAM块。
在一些实施例中，所述替换单元120，可配置为执行以下至少之一：
当根据所述周期达到所述第一类OAM块的发送时刻时，且在所述数据流中存在空闲块，则将所述空闲块中替换为所述第一类OAM块；
当根据所述周期到达所述第一类OAM块的发送时刻时，在所述数据流中不存在空闲块，则等待所述数据流的下一个空闲块，利用所述第一类OAM块替换所述下一个空闲块；
当有需要发送的第二类OAM块发送时，将所述第二类OAM块替换所述数据流中任意一个空闲块。
在一些实施例中，所述第一类OAM块，为基于日常周期性维护产生的OAM块；所述第二类OAM块，为基于触发事件产生的OAM块，或基于指示产生的OAM块。
例如，所述第一类OAM块包括：连通性检测块，信号质量校验块、客户信号本端失效的指示块、客户信号远端失效的指示块、客户信号的功耗指示块、远端缺陷指示块、远端误码指示块的至少其中之一。
又例如，所述第二类OAM块，包括：自动保护切换块、客户信号类型指示块、连通性验证块、单向时延测量块、双向时延测量块、双向时延测量响应块的至少其中之一。
在一些实施例中，所述获取单元110，可配置为当所述OAM消息的数据长度不大于所述OAM块的可承载数据长度时，获取独立OAM块。
在一些实施例中，所述获取单元110，还可配置为当所述OAM消息的数据长度大于所述OAM块的可承载数据长度时，获取与所述OAM消息对应的多个关联OAM块；其中，一个所述关联OAM块为携带有所述OAM消息的部分消息内容；其中，每一个所述关联OAM块中携带有与所述关联OAM块携带的消息内容相对应的序列号。
在一些实施例中，所述替换单元120，可配置为结合OAM块的时间顺序和/或发送优先级，按预定策略选择OAM块替换所述空闲块。
在一些实施例中，所述替换单元120，可配置为若OAM块的个数不大于所述空闲块的个数，根据所述时间顺序依次选择OAM块替换所述空闲块。
例如，所述替换单元120，可用于若OAM块的个数大于所述空闲块的个数，根据发送优先级不同，选择发送优先级高的OAM块替换所述空闲块；和/或，若OAM块的个数大于所述空闲块的个数，且待发送OAM块的优先级相同，则根据时间顺序选择OAM块替换所述空闲块。
在还有一些实施例中，所述OAM块包括以下字段至少其中之一：
类型字段，用于指示OAM块类型；
发送优先级字段，用于指示OAM块的发送优先级；
序列号字段，用于指示OAM块的序列号；
第一校验字段，用于承载第一校验码，所述第一校验码用于对所述OAM块进行校验；
消息字段，用于承载OAM消息的消息内容。
进一步地，所述获取单元110，具体用于获取根据预定类型块的封装格式的OAM块，其中，所述OAM块是以字段为基本单位封装将所述OAM 消息的消息内容的码块。
在一些实施例中，所述预定类型块为O块，所述O块包括8个字节，分别是第0至第7个字节；
所述获取单元110，具体用于获取根据O块的封装格式封装的OAM块，其中，所述OAM消息的消息内容被添加到O块的第1至3个字节及第5至第7个字节中。
在一些实施例中，所述获取单元110，可配置为获取基于第二校验码和所述OAM消息的OAM块；其中，所述第二校验码为基于第n个传输周期的码块生成的；获取的所述OAM块，用于替换第n+m个传输周期的空闲块；n为正整数；m为正整数。
在一些实施例中，所述OAM块包括：按周期发送的第一类OAM块，和/或，按需发送的第二类OAM块；所述获取单元110，可配置为基于所述第二校验码和所述OAM消息生成的所述第一类OAM块。
如图6所示，本实施例提供一种OAM消息的传输设备，包括：
接收单元210，可配置为接收数据流；
提取单元220，可配置为从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
所述接收单元210，可对应于接收接口，例如，FlexE接口，可用于接收携带有OAM块的数据流。
所述提取单元220，可对应于处理器，可用于从数据流中提取出所述OAM块。本实施例中携带有OAM块的数据流，通过替换不携带有OAM块的数据流中空闲块生成的。
在一些实施例中，所述传输设备，还包括：
拼装单元，可对应于处理器，可可配置为当所述OAM块包括序列号时，根据所述序列号拼装多个OAM块的内容，以获得多个关联OAM块对应的 OAM消息。
在一些实施例中，所述提取单元220，还可配置为从第n+m个传输周期的OAM块中提取第二校验码；
所述传输设备，还包括：
校验单元，可配置为将所述第二校验码与本地基于第n传输周期的码块生成的第三校验码比对；
确定单元，可配置为根据比对结果，确定所述第n传输周期的传输质量。
所述校验单元和确定单元，可对应于处理器。
在本发明实施例中，所述处理器可为中央处理器、微处理器、数字信号处理器、应用处理器、可编程阵列、专用集成电路等具有信息处理的装置和/或结构。
如图7所示，本实施例提供一种电子设备，该电子设备可为前述的发送设备、接收设备，或控制设备，包括：收发器310、存储器320、处理器330及存储在所述收发器310上并由所述处理器330执行的计算机程序340；
所述处理器330，分别与所述收发器310及所述存储器320连接，用于通过所述计算机程序340的执行，以控制所述收发器310的信息收发及所述存储器320的信息存储，并实现前述一个或多个技术方案提供OAM消息传输方法，例如，执行应用于发送设备的OAM消息传输方法，或，执行应用于接收设备的OAM消息传输方法。
所述收发器310，可对应于有线接口或无线接口；所述有线接口可为电缆接口或光缆接口。所述无线接口可为收发天线。
所述处理器330可为中央处理器330、微处理器330、数字信号处理器330、应用处理器330、可编程阵列或专用集成电路等。
所述处理器330可以通过集成电路总线等通信总线，分别与所述收发器310及所述存储器320连接，并通过读取并执行所述存储器320生存储的计算机程序，控制所述收发器310的信息收发及所述存储器320的信息存储，并实现前述一个或多个技术方案提供的OAM消息传输方法。
本发明实施例还提供一种计算机存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序被处理器执行后，并执行并实现前述一个或多个技术方案提供数据传输方法，例如，执行应用于发送设备的数据传输方法，或，执行应用于接收设备的数据传输方法，具体至少可执行如附图中所示的OAM消息传输方法。
本发明实施例提供的计算机存储介质包括：移动存储设备、只读存储器320(ROM，Read-Only Memory)、随机存取存储器320(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。可选为，所述计算机存储介质可为非瞬间存储介质。这里的非瞬间存储介质又可以称为非易失性存储介质。
以下结合上述任意实施例提供几个具体示例：
示例1：
SPN通道层在SPN客户层与通道之间复用解复用时按需插入/提取OAM，客户层业务无感知，支持SPN通道T通过OAM消息的传输实现OAM功能的使能/去使能(可针对每种OAM具备使能/去使能)，去使能情况下不进行OAM的插入/提取操作。
如图8所示，在FlexE链路层(对应于SPN通道层)插入OAM消息或提取OAM消息，该OAM消息可以是以数据长度为66比特的OAM块插入的。
为确保SPN通道层的OAM消息插入/提取不影响用户业务，用户业务无感知，要求OAM消息插入时通过替换业务流中的空闲块进行发送、 提取OAM后补充空闲块，OAM发送频率和插入个数需要考虑闲置资源的可用性，考虑的因素包括：
(1)支持SPN通道的客户层业务满流量发送；
(2)支持客户层业务9600字段巨帧；
(3)支持以太网端口±100ppm频偏。
对于以一定周期发送接收的OAM消息，需要等待有闲置资源时才可替换发送，因此会存在与配置的精确周期有一定偏差，如图9场景，SPN通道层的OAM功能需要考虑兼容这些偏差。
T为绝对时间且可以设置不同的传输周期，可设置的传输周期为：
16k个块；这里的块，均是只一个预定比特长度的码块；
64k个块；
256k个块；
512k个块；
说明：k＝1024比特。
针对非固定周期发送接收的OAM消息，发送侧的OAM发送可以设置如下周期，缺省为10s周期：
1s；
10s；
1min。
SPN通道传输的OAM消息需要要有循环校验码(CRC)校验机制，只有CRC校验正确的OAM才提取处理。这里的CRC可为前述的第一校验码，仅对本码块进行校验的校验码。
SPN通道的OAM消息传输要求需参考IEEE802.3-2015标准。
SPN通道OAM的支持功能如下：
支持连通性检测；
支持连通性确认；
支持比特误码检测；
支持远端误码指示(REI)；
支持远端缺陷指示(RDI)；
支持时延测量，包括：单向延时测量(1DM)和/或双向延时测量(2DM)；
支持保护倒换(APS)；
支持客户信号类型(CS)；
支持客户信号失效指示；
除上述OAM功能外，SPN通道OAM需要具备扩展能力。
SPN通道传输的OAM消息的流程图可如图10所示：
SPN接收到来自客户端的数据流之后，在数据流中未承载有消息的空闲块中插入OAM块，再发送；这样就通过数据流携带了OAM块的传输，提升了资源的有效利用率，并与用户层的业务数据的传输兼容性强，且用户对此无感。
SPN通道OAM采用替换空闲块的机制，固定周期OAM在T+ΔT时刻内定期发送，没有固定周期的OAM在需要发送且有空闲块的位置进行发送。
SPN通道层的OAM块的定义可如下：
SPN通道层OAM消息采用66比特控制块承载，66比特控制块缺省格式规范如图11所示。
SPN通道层OAM块使用0x4B控制块内的O代码区分，O代码缺省采用0xC，需要支持O代码可设置。
SPN通道层OAM使用控制块内的6个数据(D)块承载OAM消息，具体可如图12所示。
所述OAM块包括的具体字段格式可如下：
0x4B：8比特，块类型，表示该块为O码类型；
保留(Resv)字段：共2比特，预留字段，缺省采用0b00；
类型(Type)字段：共6比特，标识不同操作维护管理的不同功能类型；
内容(Value)字段：共32比特，特定类型的OAM消息的内容；
C码字段：共4比特，缺省为0xC，支持设置，表示SPN通道层支持OAM消息传输；
序列号(Seq)字段：共4比特，标识同一OAM功能或OAM消息中采用的多个OAM块的序号，Seq不能在本规范定义的值之外，否则为非法块。
校验字段(例如，CRC4字段)：共4比特，对SPN传输的OAM块(除CRC4之外)的4比特CRC校验(同步头不参与校验)；所有操作维护管理(OAM)块只有在CRC校验正确时有效。算法多项式：X4+x+1；初始值0。所有操作维护管理(OAM)块只有在CRC校验正确时才有效。
在有些情况下，所述校验码可为4个比特的CRC，简称CRC4.对SPNOAM块的数据字段1(Data1)至数据字段6(Data6)(除CRC4之外)进行CRC校验(说明：OAM块中的同步头不参与校验)；所有操作维护管理(OAM)块只有在CRC校验正确时有效。算法多项式：X4+x+1，初始值为0。CRC结果[X4：X0]在码块中的位置为[第2比特：第65比特]。所有操作维护管理(OAM)BLOCK只有在CRC校验正确时才有效。
所有OAM的发送顺序与标准保持一致，通常，OAM块的66比特，从第0比特至第65比特一次排列，第0比特先发送，即低位在前，高位 在后。字节的编码顺序高低位一一对应，比如0x4B的除同步头以外的第7比特在66比特中码块中的置放位置为第9比特；除同步头以外的第0比特在66比特码块中的置放位置为第2比特的位置。
所有OAM的发送顺序与标准保持一致(OIF FlexE 2.0草案Figure-17明确66比特块比特0～65排列，数据部分比特0先发送，即低位在前，高位在后，CRC部分比特3先发送，即高位在前)。
SPN通道层传输的OAM块分类：
根据消息插入的类型，SPN通道层OAM块分为如下几类：
(1)固定参考周期插入OAM类型，主要包括CC(连通性检查)、BIP(BIP校验)、CS_LF(客户信号本端失效)、CS_RF(客户信号远端失效)、CS_LPI(客户信号低功耗指示)。此类OAM块，在FlexE Client中按固定的参考周期进行发送(最短周期为16K以太网66比特块，可支持设置)。
(2)事件触发插入OAM类型：主要包括APS(自动保护倒换)、CS(客户信号指示)。此类OAM由相关的事件触发，当事件发生后会触发OAM块立即发送，正常情况下按指定的周期发送，周期通常大于等于一秒。
(3)按需OAM功能，主要包括CV(连通性验证)、1DM(单向时延测量)、2DMM(双向时延测量)、2DMR(双向时延测量响应)。按需OAM功能。此类OAM块需要使能，在FlexE Client中按需进行插入，也可以按指定的周期持续插入。支持的周期通常大于等于1秒。
SPN通道层的传输OAM块的扩展机制可如下：
SPN通道层的OAM消息采用66比特OAM块传输，利用TLV格式发送。由于一个以太网块所能承载的OAM消息有限，部分OAM功能需要拆分为多个块发送。
SPN通道层的OAM块可包括：单块方式和多块方式。这里的单块方式即为前述的独立OAM块的一种。这里的多块方式可为产生前述关联OAM块的一种。
单块方式采用一个独立的块表示一个完整的OAM功能。
多块方式采用多个块组合表示一个完整的OAM功能。
多块方式下，需要在OAM块中增加序列号(Seq)用于组合包含多块的OAM功能。
SPN通道层的OAM块具有发送优先级。
由于各OAM功能重要性和实时性不同，SPN通道层OAM需区分发送优先级传输。OAM分为高低两个发送优先级，当第二发送优先级的OAM块排队发送过程中，一旦出现第一发送优先级块发送要求，则优先发送第一发送优先级块。即所述发送优先级为传输发送优先级，与OAM消息指向的OAM功能重要程度和实时性要求相关。
OAM构建OAM块时，还可参考一下原则：
1、每16K块可插入一个OAM块；
2、BIP计算：放前面第二个的BIP校验结果；两个BIP开销块之间的所有码块(包含数据码块、空闲块、Orderset，客户端层OAM等所有码块是否校验支持配置)。
4、APS：APS双端需要补充确认机制和发送周期(快发3帧：16K块一个，后再以每秒周期发送)。
5、在OAM中是增加版本号的校验，单独定义类型(用于做两端适配，部分进行预留)。
SPN通道层的OAM消息可实现的OAM功能定义可如下：
SPN设备通道层的OAM消息分为：告警相关的OAM消息、性能相关的OAM消息 和其他OAM三大类消息。
所述OAM功能可支持CC、CV、REI、RDI、DM、BIP、APS、CSF、CS、AIS、LCK、LM、TEST、LB、LT等功能。
OAM消息通过66比特块进行传递，66比特块遵循64/66编码规范，采用“C”块格式，并进行了扩展(绿色字体)：第一个字段采用0x4B作为块控制类型，第5个字段的前4个比特用0xC(二进制是0b1100)作为OAM块的标识。具体格式如下：
Figure PCTCN2018101192-appb-000001
在OAM块中，TPYE采用6个比特表示OAM消息类型；
SEQ是序列号值，从0计数到15不断计数。
CRC4(多项式X4+X+1)是校验结果，对OAM块中字段0---字段7的60个比特进行校验的结果。D1-D4共4个字段用于传递OAM消息。Resv部分是保留字段。
TYPE字段定义如下表：
Figure PCTCN2018101192-appb-000002
Figure PCTCN2018101192-appb-000003
在具体实现中，当不同类型的OAM消息进行发送时，先发送第一发送优先级的OAM消息，然后发送第二发送优先级的OAM消息。相同发送优先级的OAM在发送时，需要等前一个OAM消息发送结束后才能发送后一个OAM消息。具体规则可如图13所示。
所有OAM块在空闲块处替换插入，不改变业务报文完整性。其中T为绝对周期，当前面的块出现偏移后，不能影响后续块的发送时间。
OAM块周期可如图14所示。OAM块按各自块的周期插入，不同OAM块相互独立。
当出现多个OAM块需要插入的冲突时，可以采用如下规则解决插入冲突：
在图15及图16中，A块的发送优先级高于B块的发送优先级；B块的发送优先级高于L块的发送优先级。A块、B块及L块均为OAM块的一种。
冲突处理规则一：
可如图15所示，当空闲块的数目不小于需要插入的OAM块的个数时，将所有待插入的OAM块按照时间顺序依次插入到空闲块中，故在图H1中按时间顺序依次插入L块、A块及B块。
冲突处理规则二：
可如图16所示，当空闲块的数目小于需要插入的OAM块的个数时，按照发送优先级，优先将发送优先级高的OAM块插入到空闲块中，故在图16中先插入A块，再插入B块，最后插入L块。
所述OAM块可包括：基本块和在基板块上进行修改或拓展的拓展 块。
基本块的格式可如下表：
Figure PCTCN2018101192-appb-000004
基本块的各字段定义可如下：
Figure PCTCN2018101192-appb-000005
Figure PCTCN2018101192-appb-000006
基本块的发送优先级为第一发送优先级。
基本块可为周期传输的OAM块，其周期的最小间隔为16K个块，可配置为64K个块、256K个块或512K个块。而一个块对应的时长是一定的。
基本块的应用方式可如下：
当FlexE通道的客户侧信号检测出现本端缺陷的情况下，CS_LF置位为0x1，当客户信号正常后，CS_LF置位0x0；用于指示SPN的客户层为本端缺陷(LF)时，使用闲置进行替换，宿端还原LF。
当FlexE通道的客户侧信号检测出现远端缺陷的情况下，CS_RF置位为0x1，当客户信号正常后，CS_RF置位0x0；用于指示SPN客户层为RF时，使用闲置进行替换，宿端还原RF。
CSF_LPI用于指示SPN客户层为LPI时，使用闲置进行替换，宿端还原LPI。
当FlexE通道检测到故障后，在反方向的基本块中将RDI设置为0x1，当故障消失后，将RDI设置为0x0。
当FlexE通道检测到BIP误码后，在反向的REI中携带检测到的误码数量。
在CC/BIP块中携带前面第二个BIP校验区间的校验结果，两个BIP开销块之间的数据块、闲置、Orderset都需要参与BIP校验。
在一些实施例中，LPI不参与BIP校验，SPN通道OAM块支持配置是否参与BIP校验。块校验采用BIP8方式，校验规则如下：
执行APS保护自动倒换(APS协议)的APS块。
APS块的块格式定义可如下：
自动保护倒换(APS)用于在维护端点间传递故障条件及保护倒换 状态等信息，以协调保护倒换操作，实现线性保护功能，提高网络可靠性。APS码块格式如下表：
Figure PCTCN2018101192-appb-000007
APS块的字段定义可如下表：
Figure PCTCN2018101192-appb-000008
APS信息如下：
APS协议的报文净荷结构如下表所示：
Figure PCTCN2018101192-appb-000009
上表可字段的定义可如下表：
Figure PCTCN2018101192-appb-000010
所述APS块的发送优先级为第一发送优先级。
所述APS块可周期发送的OAM块。
宿端检测到故障后以间隔16K个块后，周期连续插入三个APS块。 正常情况下每秒发送一个APS块用于校验。
APS块的应用方式可如下：
1)APS触发条件
APS保护倒换的触发条件包括：
a)外部命令：清除(Clear、保护锁定(LP)、强制倒换(FS)、人工倒换(MS)、练习(EXER)；
b)物理检测和OAM请求：信号失效(SF)、信号劣化(SD)；
c)保护状态：等待恢复(WTR)、反向请求(RR)、非返回CDNR)、无请求(NR)。
2)APS报文的发送与接收可包括：
APS信息在保护域的源端插入，由保护通路传送，在宿端提取，中间通路接收被忽略。
正常工作时，APS信息发送的周期每秒一次，但当工作状态发生变化时必须立即以大概16384个66比特块的问隔连续发送三个APS信息，接收到第1个正确的APS信息就触发相应动作，这样即使一两个APS信息丢失或损坏也能够保证实现快速的保护倒换。后续的APS信息发送的时间间隔又恢复为为1s。如果端点没有接收到有效的APS报文，则接收到的前一个有效信息可用。
执行CV的OAM块可称为CV块。
CV块的块格式定义可如下：
连通性校验功能工作在主动模式，CV信息由源点标识信息SAPI和宿点标识信息DAPI组成，SAPI和DAPI均是16个字段长的字符串，SAPI格式、DAPI格式定义参考G.709。
SPN通道源宿点周期性地发送CV信息，宿维护点对该信息进行监测，可以探测SPN通道是否存在错误连接故障。
Figure PCTCN2018101192-appb-000011
采用多块方式承载CV块，当Seq为0x0、0x1、0x2、0x3时，携带的value表示SAPI；当Seq为0x4、0x5、0x6、0x7时候，携带的Vlaue表示DAPI。
CV块的字段定义可如下表：
Figure PCTCN2018101192-appb-000012
Figure PCTCN2018101192-appb-000013
CV块的发送优先级为第二发送优先级；第二发送优先级对应的发送优先程度低于第一发送优先级的发送优先程度。
所述CV块为周期发送的OAM块，发送周期可为：缺省周期10秒，或可设置为1秒、10秒、1分钟。
CV块的应用方式可如下：
使能CV功能的FlexE通道两端周期性向对端发送CV块，采用多个块组合的方式携带SAPI和DAPI。
接收端接收到完整的序号分别为0～7的CV块后，将SAPI和DAPI和本地通道进行校验，如果不一致，则表示连通性验证错误，上报告警。如一致，则表示连通刚性验证正确，取消告警。
执行CS的OAM块可称为CS块。
CS块格式定义可如下表：
Figure PCTCN2018101192-appb-000014
CS块的字段定义可如下表：
Figure PCTCN2018101192-appb-000015
Figure PCTCN2018101192-appb-000016
CS块的发送优先级为第二发送优先级；所述CS块为周期发送的OAM块。其周期可为当客户信号变化时，立即发送，之后维持较长周期(缺省10秒)，周期性发送，周期可设置为1秒、10秒、1分钟。
执行1DM的OAM块可称为1DM块。
1DM格式定义可如下表：
Figure PCTCN2018101192-appb-000017
1DM块采用多块方式，当Seq为0x0，携带的Vlaue表示时间戳的低4字节，当Seq为0x1，携带的Vlaue表示时间戳的高4字节。说明：B0为时间戳的最低字段。
1DM块的字段定义可如下表：
Figure PCTCN2018101192-appb-000018
Figure PCTCN2018101192-appb-000019
1DM块的发送优先级为第二发送优先级，为周期发送的OAM块，周期可缺省周期10秒，或可设置为1秒、10秒、1分钟。支持按需开启。
1DM块的应用方式可如下：
1DM发送端将本地时间戳写入1DM报文时间戳字段。
1DM接收端接收到1DM块后，记录本地时间戳为1DM接收时间戳，计算“1DM接收时间戳–1DM发送时间戳”，得到单向时延值。
执行2DMM的OAM块可称为2DMM块。
2DMM块的块格式定义可如下表：
Figure PCTCN2018101192-appb-000020
2DMM块可采用多块方式承载，当Seq为0x0，携带的Vlaue表示时间戳的低4字节；当Seq为0x1，携带的Vlaue表示时间戳的高4字节；
2DMM块的字段定义可下表：
Figure PCTCN2018101192-appb-000021
Figure PCTCN2018101192-appb-000022
2DMM块的发送优先级可为第二发送优先级，可为周期发送的OAM块，缺省周期1秒，周期还可设置为1秒、10秒、1分钟。支持按需开启。
执行2DMR的OAM块可称为2DMR块。
2DMR块的格式定义可如下表：
Figure PCTCN2018101192-appb-000023
2DMR块采用多块方式承载：
1)当Seq为0x0，携带的Vlaue表示前向发送时间戳的低4字节，当Seq为0x1，携带的Vlaue表示前向发送时间戳的高4字节，
2)当Seq为0x2，携带的Vlaue表示后向接收时间戳的低4字节，当Seq为0x3，携带的Vlaue表示后向接收时间戳的高4字节，
3)当Seq为0x4，携带的Vlaue表示后向发送时间戳的低4字节，当Seq为0x5，携带的Vlaue表示后向发送时间戳的高4字节，
2DMR块的字段定义可如下表：
Figure PCTCN2018101192-appb-000024
Figure PCTCN2018101192-appb-000025
在上述表格中，所述前向的发送时间戳，为2DMM块从发送端TX发出的发送时刻的时间戳，所述后向的接收时间戳为2DMM块达到接收端RX的接收时刻的时间戳；所述后向的发送时间戳为所述接收端向发送端返回2DMR块的发送时刻的时间戳。
2DMR块的发送优先级为第二发送优先级，可为周期发送的OAM块，也可以不是周期发送的OAM块，例如，可在接收到2DMM块后立 即发送。
2DMR块的应用方式可如下：
1)双向时延测量发起端发送DMM块，携带本地时间戳；
2)双向时延反射端接收到DMM块，将DMM中的时间戳拷贝到DMR报文的前向发送时间戳中，并在DMR报文中写入本地的接收时间戳、本地的发送时间戳。
3)双向时延反射端发送DMR报文给发起端；
4)发起端接收到DMR块后，计算(DMR接收时间戳–DMM发送时间戳/Tx_f_TS)-(DMR发送时间戳/Tx_b_TS–DMM接收时间戳/Rx_b_TS)，得到双向时延数值。
执行BIP8的OMA块可为BIP8块。
BIP8用于检测客户通道的信号质量，平均16284个66比特码块的间隔发送一个BIP8的计算结果。BIP8的计算覆盖范围是从上一个BIP8信息之后的第一个新块开始，到本BIP8码块结束的所有码块，包括S块、D块、T块、O块、空闲块等。每次BIP的计算结果放在下下个BIP码块(第三个码块)中。
SPN通道层OAM块默认参与BIP校验，可配置为不参与BIP校验。OAM的识别根据OAM的特征信息进行(0x4B+0xC)。
BIP8的计算过程如下：
第一步：计算每个码块的BIP8内容，将一个码块中第7个字节的8个比特按位进行异或，得到BIP[7]内容，将码块中第6个字节的8个比特按位进行异或，得到BIP[6]内容，因此类推，将码块中第0个字节的8个比特按位进行异或，得到BIP[0]内容。
第二步：将一个周期内所有码块对应的BIP信息值，按位进行异或，得到最终的BIP8值。
在本申请所提供的几个实施例中，应该理解到，所揭露的设备和方法，可以通过其它的方式实现。以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，如：多个单元或组件可以结合，或可以集成到另一个系统，或一些特征可以忽略，或不执行。另外，所显示或讨论的各组成部分相互之间的耦合、或直接耦合、或通信连接可以是通过一些接口，设备或单元的间接耦合或通信连接，可以是电性的、机械的或其它形式的。
上述作为分离部件说明的单元可以是、或也可以不是物理上分开的，作为单元显示的部件可以是、或也可以不是物理单元，即可以位于一个地方，也可以分布到多个网络单元上；可以根据实际的需要选择其中的部分或全部单元来实现本实施例方案的目的。
另外，在本发明各实施例中的各功能单元可以全部集成在一个处理模块中，也可以是各单元分别单独作为一个单元，也可以两个或两个以上单元集成在一个单元中；上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
本领域普通技术人员可以理解：实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成，前述的程序可以存储于一计算机可读取存储介质中，该程序在执行时，执行包括上述方法实施例的步骤；而前述的存储介质包括：移动存储设备、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本 发明的保护范围应以所述权利要求的保护范围为准。

Claims (22)

  1. 一种操作管理维护OAM消息传输方法，包括：
    获取基于OAM消息生成的OAM块；
    利用所述OAM块替换数据流中的空闲块；
    发送携带有所述OAM块的数据流。
  2. 根据权利要求1所述的方法，其中，
    所述OAM块包括：按周期发送的第一类OAM块和/或，按需发送的第二类OAM块。
  3. 根据权利要求2所述的方法，其中，
    所述利用所述OAM块替换数据流中的空闲块，包括以下至少之一：
    当根据所述周期达到所述第一类OAM块的发送时刻时，且在所述数据流中存在空闲块，则将所述空闲块中替换为所述第一类OAM块；
    当根据所述周期到达所述第一类OAM块的发送时刻时，在所述数据流中不存在空闲块，则等待所述数据流的下一个空闲块，利用所述第一类OAM块替换所述下一个空闲块；
    当有需要发送的第二类OAM块发送时，将所述第二类OAM块替换所述数据流中任意一个空闲块。
  4. 根据权利要求2所述的方法，其中，
    所述第一类OAM块，为基于日常周期性维护产生的OAM块；
    所述第二类OAM块，为基于触发事件产生的OAM块，或基于指示产生的OAM块。
  5. 根据权利要求4所述的方法，其中，
    所述第一类OAM块包括：连通性检测块，信号质量校验块、客户信号本端失效的指示块、客户信号远端失效的指示块、客户信号的功耗指示 块、远端缺陷指示块、远端误码指示块的至少其中之一；
    所述第二类OAM块，包括：自动保护切换块、客户信号类型指示块、连通性验证块、单向时延测量块、双向时延测量块、双向时延测量响应块的至少其中之一。
  6. 根据权利要求1所述的方法，其中，
    所述获取基于OAM消息生成的OAM块，包括：
    当所述OAM消息的数据长度不大于所述OAM块的可承载数据长度时，获取独立OAM块。
  7. 根据权利要求1所述的方法，其中，
    所述获取基于OAM消息生成的OAM块，包括：
    当所述OAM消息的数据长度大于所述OAM块的可承载数据长度时，获取与所述OAM消息对应的多个关联OAM块；其中，一个所述关联OAM块为携带有所述OAM消息的部分消息内容；其中，每一个所述关联OAM块中携带有与所述关联OAM块携带的消息内容相对应的序列号。
  8. 根据权利要求1所述的方法，其中，
    所述利用所述OAM块替换数据流中的空闲块，包括：
    结合OAM块的时间顺序和/或发送优先级，按预定策略选择OAM块替换所述空闲块。
  9. 根据权利要求8所述的方法，其中，
    所述结合OAM块的时间顺序和/或发送优先级，按预定策略选择OAM块替换所述空闲块，包括：
    若OAM块的个数不大于所述空闲块的个数，根据所述时间顺序依次选择OAM块替换所述空闲块。
  10. 根据权利要求8所述的方法，其中，
    所述结合OAM块的时间顺序和/或发送优先级，按预定策略将所述 OAM块替换所述空闲块，包括：
    若OAM块的个数大于所述空闲块的个数，根据发送优先级不同，选择发送优先级高的OAM块替换所述空闲块；
    和/或，
    若OAM块的个数大于所述空闲块的个数，且待发送OAM块的优先级相同，则根据时间顺序选择OAM块替换所述空闲块。
  11. 根据权利要求1所述的方法，其中，
    所述OAM块包括以下字段至少其中之一：
    类型字段，用于指示OAM块类型；
    发送优先级字段，用于指示OAM块的发送优先级；
    序列号字段，用于指示OAM块的序列号；
    第一校验字段，用于承载第一校验码，所述第一校验码用于对所述OAM块进行校验；
    消息字段，用于承载OAM消息的消息内容。
  12. 根据权利要求1所述的方法，其中，
    所述获取基于OAM消息生成的OAM块，包括：
    获取根据预定类型块的封装格式的OAM块，其中，所述OAM块是以字段为基本单位封装将所述OAM消息的消息内容的码块。
  13. 根据权利要求12所述的方法，其中，
    所述预定类型块为O块，所述O块包括8个字节，分别是第0至第7个字节；
    所述获取根据预定类型块的封装格式的OAM块，其中，所述OAM块是以字节为基本单位封装将所述OAM消息的消息内容的码块，包括：
    获取根据O块的封装格式封装的OAM块，其中，所述OAM消息的消息内容被添加到O块的第1至3个字节及第5至第7个字节中。
  14. 根据权利要求1所述的方法，其中，
    所述获取基于OAM消息生成的OAM块，包括：
    获取基于第二校验码和所述OAM消息的OAM块；其中，所述第二校验码为基于第n个传输周期的码块生成的；获取的所述OAM块，用于替换第n+m个传输周期的空闲块；n为正整数；m为正整数。
  15. 根据权利要求14所述的方法，其中，
    所述OAM块包括：按周期发送的第一类OAM块，和/或，按需发送的第二类OAM块；
    所述获取基于第二校验码和所述OAM消息的OAM块，包括：
    基于所述第二校验码和所述OAM消息生成的所述第一类OAM块。
  16. 一种操作管理维OAM消息传输方法，包括：
    接收数据流；
    从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
  17. 根据权利要求16所述的传输方法，其中，还包括：
    当所述OAM块包括序列号时，根据所述序列号拼装多个OAM块的内容，以获得多个关联OAM块对应的OAM消息。
  18. 根据权利要求16或17所述的方法，其中，还包括：
    从第n+m个传输周期的OAM块中提取第二校验码；
    将所述第二校验码与本地基于第n传输周期的码块生成的第三校验码比对；
    根据比对结果，确定所述第n传输周期的传输质量。
  19. 一种操作管理维护OAM消息传输设备，包括：
    获取单元，配置为获取基于OAM消息生成的OAM块；
    替换单元，配置为利用所述OAM块替换数据流中的空闲块；
    发送单元，配置为发送携带有所述OAM块的数据流。
  20. 一种OAM消息的传输设备，包括：
    接收单元，配置为接收数据流；
    提取单元，配置为从所述数据流中提取OAM块，其中，所述OAM块是替换了原始的数据流中的空闲块的码块。
  21. 一种传输设备，包括：收发器、存储器、处理器及存储在存储器上并由处理器执行的计算机程序；
    所述处理器，分别与所述收发器及存储器连接，配置为通过执行所述计算机程序，实现权利要求1至15任一项提供的方法，或执行权利要求16至18任一项提供的方法。
  22. 一种计算机存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序被执行后，能够实现权利要求1至15任一项提供的方法，或执行权利要求16至18任一项提供的方法。
PCT/CN2018/101192 2017-09-21 2018-08-17 Oam消息传输方法、传输设备及存储介质 WO2019056899A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18858412.2A EP3678330B1 (en) 2017-09-21 2018-08-17 Oam message transmission method and transmission device, and storage medium
US16/648,579 US11558143B2 (en) 2017-09-21 2018-08-17 OAM message transmission method and transmission device, and storage medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710861368.0A CN109347648B (zh) 2017-09-21 2017-09-21 Oam消息传输方法、传输设备及存储介质
CN201710861368.0 2017-09-21

Publications (1)

Publication Number Publication Date
WO2019056899A1 true WO2019056899A1 (zh) 2019-03-28

Family

ID=65291358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/101192 WO2019056899A1 (zh) 2017-09-21 2018-08-17 Oam消息传输方法、传输设备及存储介质

Country Status (4)

Country Link
US (1) US11558143B2 (zh)
EP (1) EP3678330B1 (zh)
CN (9) CN112134651B (zh)
WO (1) WO2019056899A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438606A (zh) * 2020-03-23 2021-09-24 中国移动通信有限公司研究院 报文传输方法、装置、相关设备及存储介质
CN115314179A (zh) * 2022-08-05 2022-11-08 烽火通信科技股份有限公司 Mtnp oam消息发送方法和装置
JP7478851B2 (ja) 2020-06-08 2024-05-07 中国移動通信有限公司研究院 Ｏａｍメッセージ伝送方法、装置、関連機器及び記憶媒体

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109962762B (zh) * 2017-12-25 2020-06-16 华为技术有限公司 一种数据传输方法、发送装置及接收装置
CN110858811B (zh) * 2018-08-24 2022-01-18 华为技术有限公司 测量时延的方法和网络设备
CN111224746B (zh) * 2018-11-26 2022-06-24 华为技术有限公司 一种业务比特流处理方法及装置
CN109728948B (zh) * 2018-12-26 2022-05-13 苏州盛科通信股份有限公司 一种运营维护管理信息处理方法和装置
US11522777B2 (en) * 2019-02-07 2022-12-06 Avago Technologies International Sales Pte. Limited Method and systems to monitor and isolate issues over layer1 paths using FlexE client OAM
CN113574826B (zh) * 2019-03-11 2023-06-02 华为技术有限公司 交互时钟同步报文的方法及装置
CN111817986B (zh) * 2019-04-11 2023-05-09 中国移动通信有限公司研究院 一种报文处理方法、装置及计算机可读存储介质
US20210076111A1 (en) * 2019-09-05 2021-03-11 Ciena Corporation Flexible Ethernet over wireless links
CN112787874B (zh) * 2019-11-04 2022-06-03 烽火通信科技股份有限公司 一种用于spn网络ioam功能的丢包测量方法及系统
CN113132173A (zh) * 2019-12-31 2021-07-16 华为技术有限公司 时延确定方法及装置、网络传输系统
CN112511919A (zh) * 2020-03-24 2021-03-16 中兴通讯股份有限公司 Oam信息发送方法、装置、设备和存储介质
CN113596629B (zh) * 2020-04-30 2023-03-31 中国移动通信有限公司研究院 信息传输方法、装置、通信设备及可读存储介质
CN113765619B (zh) * 2020-06-05 2023-05-05 中国移动通信有限公司研究院 64b/66b码流发送方法、64b/66b码流接收方法及设备
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
CN112511266A (zh) * 2020-07-01 2021-03-16 中兴通讯股份有限公司 传输方法、检测方法及装置、获取方法、网络设备及系统
CN112511331A (zh) * 2020-07-28 2021-03-16 中兴通讯股份有限公司 Oam信息块定位方法及装置
CN114125880A (zh) * 2020-08-28 2022-03-01 中国移动通信有限公司研究院 发送端运行、管理和维护插入、提取方法、设备及介质
CN112188525B (zh) * 2020-09-28 2022-04-15 烽火通信科技股份有限公司 一种基于策略模板定制的ioam部署方法及系统
CN114650207A (zh) * 2020-12-15 2022-06-21 中国移动通信有限公司研究院 Oam信息的处理方法、装置及通信设备
CN114979837A (zh) * 2021-02-22 2022-08-30 中兴通讯股份有限公司 Oam信息块的接收方法及装置
WO2022228637A1 (en) * 2021-04-26 2022-11-03 Huawei Technologies Co., Ltd. Packet for communicating operational, administration and/or management messages
CN113840274B (zh) * 2021-09-18 2023-06-02 中国联合网络通信集团有限公司 Bip通道状态管理方法、移动设备、uicc和用户终端
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
CN116980324A (zh) * 2022-04-24 2023-10-31 华为技术有限公司 一种时延测量方法以及相关设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001644A2 (en) * 1998-11-10 2000-05-17 Fujitsu Limited Bandwidth control apparatus
JP2001024655A (ja) * 1999-07-05 2001-01-26 Nec Corp 運用保守セル検出装置および方法
JP2003069611A (ja) * 2001-08-29 2003-03-07 Nec Corp Ａｔｍにおけるｏａｍ処理方法およびその方式
JP2008124967A (ja) * 2006-11-15 2008-05-29 Mitsubishi Electric Corp イーサｏａｍスイッチ装置
CN101447975A (zh) * 2007-11-26 2009-06-03 华为技术有限公司 一种处理以太网物理层oam开销的方法及装置

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5764626A (en) * 1995-11-17 1998-06-09 Telecommunications Techniques Corporation Rate-matched cell identification and modification, replacement, or insertion for test and measurement of ATM network virtual connections
US6466592B1 (en) * 1998-11-02 2002-10-15 Cisco Technology, Inc. MPEG frame add/drop multiplexer with bandwidth controller
KR100640464B1 (ko) * 2002-10-31 2006-10-30 삼성전자주식회사 Ｏａｍ 패킷 데이터 전송 방법 및 이를 위한 컨트롤멀티플렉서를 포함하는 이더넷 수동형광가입자망
JP2004364293A (ja) * 2003-05-29 2004-12-24 Lycium Networks (Bvi) Ltd 適応型速度管理、適応型ポインタ管理及び周波数ロックされた適応型ポインタ管理のための方法及びシステム
US7949782B2 (en) * 2003-11-06 2011-05-24 Qualcomm Incorporated Extended link monitoring channel for 10 Gb/s Ethernet
CN100401715C (zh) * 2005-12-31 2008-07-09 华为技术有限公司 局域网信号在光传送网中传输的实现方法和装置
CN101227450B (zh) * 2007-01-16 2013-04-24 华为技术有限公司 一种开销信息的传输方法、系统及设备
CN101335750B (zh) * 2007-06-29 2012-08-08 华为技术有限公司 将以太网编码块映射到光传输网络传输的方法及装置
CN101436955B (zh) * 2007-11-12 2012-04-04 华为技术有限公司 以太网物理层oam开销的发送、接收方法及发送、接收装置
US8693349B2 (en) * 2008-08-26 2014-04-08 Alcatel Lucent Methods for establishing a traffic connection and an associated monitoring connection
CN101483549B (zh) * 2009-02-13 2012-05-23 华为技术有限公司 保护倒换方法、装置和系统
CN102143005B (zh) * 2011-04-14 2015-01-28 中兴通讯股份有限公司 一种基于oam协议确定故障消除的方法及装置
JP5426604B2 (ja) * 2011-04-26 2014-02-26 富士通テレコムネットワークス株式会社 光パケット交換システム
US9819546B2 (en) * 2011-07-07 2017-11-14 Ciena Corporation Data connectivity systems and methods through packet-optical switches
US8964563B2 (en) * 2011-07-08 2015-02-24 Telefonaktiebolaget L M Ericsson (Publ) Controller driven OAM for OpenFlow
CN103823776A (zh) * 2014-02-28 2014-05-28 上海晟矽微电子股份有限公司 面向主从设备通信的单总线及通信方法
CN105230092B (zh) * 2014-03-21 2019-04-23 华为技术有限公司 基站、网络控制器以及前向切换的方法
CN106301678B (zh) * 2015-06-08 2020-02-14 华为技术有限公司 一种数据处理的方法、通信设备及通信系统
US9838290B2 (en) * 2015-06-30 2017-12-05 Ciena Corporation Flexible ethernet operations, administration, and maintenance systems and methods
US10097480B2 (en) * 2015-09-29 2018-10-09 Ciena Corporation Time transfer systems and methods over flexible ethernet
EP4060914A1 (en) * 2015-06-30 2022-09-21 Ciena Corporation Flexible ethernet systems and methods for time transfer
CN110719143A (zh) * 2015-07-30 2020-01-21 华为技术有限公司 用于数据传输的方法、发送机和接收机
CN106612220A (zh) * 2015-10-27 2017-05-03 中兴通讯股份有限公司 灵活以太网的通道管理方法和装置
CN108123813B (zh) * 2016-11-28 2020-06-02 华为技术有限公司 操作、管理和维护oam数据的传输方法和装置
CN114726479A (zh) * 2017-07-18 2022-07-08 华为技术有限公司 一种检测块发送和接收的方法、网络设备和系统
CN109347598B (zh) * 2017-09-21 2022-03-11 中国移动通信有限公司研究院 校验码处理方法、电子设备及存储介质

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1001644A2 (en) * 1998-11-10 2000-05-17 Fujitsu Limited Bandwidth control apparatus
JP2001024655A (ja) * 1999-07-05 2001-01-26 Nec Corp 運用保守セル検出装置および方法
JP2003069611A (ja) * 2001-08-29 2003-03-07 Nec Corp Ａｔｍにおけるｏａｍ処理方法およびその方式
JP2008124967A (ja) * 2006-11-15 2008-05-29 Mitsubishi Electric Corp イーサｏａｍスイッチ装置
CN101447975A (zh) * 2007-11-26 2009-06-03 华为技术有限公司 一种处理以太网物理层oam开销的方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP3678330A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113438606A (zh) * 2020-03-23 2021-09-24 中国移动通信有限公司研究院 报文传输方法、装置、相关设备及存储介质
CN113438606B (zh) * 2020-03-23 2022-08-30 中国移动通信有限公司研究院 报文传输方法、装置、相关设备及存储介质
JP7478851B2 (ja) 2020-06-08 2024-05-07 中国移動通信有限公司研究院 Ｏａｍメッセージ伝送方法、装置、関連機器及び記憶媒体
CN115314179A (zh) * 2022-08-05 2022-11-08 烽火通信科技股份有限公司 Mtnp oam消息发送方法和装置
CN115314179B (zh) * 2022-08-05 2023-06-09 烽火通信科技股份有限公司 Mtnp oam消息发送方法和装置

Also Published As

Publication number Publication date
CN112134651B (zh) 2023-05-09
EP3678330A1 (en) 2020-07-08
US11558143B2 (en) 2023-01-17
CN112134655B (zh) 2023-05-09
CN112187566A (zh) 2021-01-05
CN112134653B (zh) 2023-05-09
CN112073246A (zh) 2020-12-11
CN112134651A (zh) 2020-12-25
CN112073245B (zh) 2023-05-09
US20200220650A1 (en) 2020-07-09
CN109347648B (zh) 2020-10-16
CN112187566B (zh) 2022-07-29
CN112134654A (zh) 2020-12-25
CN112134655A (zh) 2020-12-25
CN109347648A (zh) 2019-02-15
EP3678330B1 (en) 2023-02-15
CN112073245A (zh) 2020-12-11
CN112134653A (zh) 2020-12-25
CN112134652B (zh) 2023-05-09
CN112134654B (zh) 2023-06-27
EP3678330A4 (en) 2020-10-21
CN112073246B (zh) 2023-05-09
CN112134652A (zh) 2020-12-25

Similar Documents

Publication Publication Date Title
WO2019056899A1 (zh) Oam消息传输方法、传输设备及存储介质
US11539607B2 (en) Detection block sending and receiving method, and network device and system
EP3675398B1 (en) Check code processing method, electronic device, and storage medium
US6741566B1 (en) Remote management ethernet network and device
WO2021115452A1 (zh) 灵活以太网开销复帧接收方法、装置、设备及介质
WO2020133897A1 (zh) 运营维护管理信息处理方法和装置
WO2021254508A1 (zh) 一种确定码组丢失的方法及装置
WO2019015462A1 (zh) 一种检测块发送和接收的方法、网络设备和系统
WO2008095390A1 (fr) Équipement de détection d'incident de ligne en émulation de pseudo-fil et procédé correspondant
WO2021196774A1 (zh) 发送和处理信息的方法、以太网设备、计算机可读介质
US9008077B2 (en) Method for quick map recovery in case of error in MoCA
WO2017000737A1 (zh) 一种传输校验方法、节点、系统与计算机存储介质
JP2024507489A (ja) Ｏａｍ情報ブロックの受信方法及び装置
CN116996168A (zh) 数据传输方法、总线节点及通信系统

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: 18858412

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2018858412

Country of ref document: EP

Effective date: 20200330