WO2022021882A1

WO2022021882A1 - Oam information block positioning method and device

Info

Publication number: WO2022021882A1
Application number: PCT/CN2021/079778
Authority: WO
Inventors: 刘峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2020-07-28
Filing date: 2021-03-09
Publication date: 2022-02-03
Also published as: CN112511331A

Abstract

An OAM information block positioning method and device, being able to enable a receiving end to effectively determine a desired insertion position of an OAM information block in a sending end. The OAM information block positioning method comprises: inserting an OAM information block at a first position in a service code block stream, the OAM information block carrying position deviation information, the position deviation information being used to indicate a deviation value between the first position and a second position, and the second position being used to indicate a desired insertion position determined by a sending end according to a preset insertion period; and sending the service code block stream to a receiving end, such that the receiving end determines the second position at least according to the position deviation information.

Description

OAM information block positioning method and device

technical field

Embodiments of the present invention relate to the field of communications, and in particular, to a method and apparatus for locating an OAM information block.

Background technique

The Flexible Ethernet (FlexE) protocol is the core technology of 5G bearer. At present, the International Telecommunication Union (ITU) organization has added the operation, management and maintenance (Operation, Administration and maintenance) of pipeline monitoring in the FlexE customer service. Maintenance, OAM) function to detect the quality of service status of the pipeline that FlexE carries customer services, such as bit error rate, delay time, service discarding and other functions. During the implementation of the OAM function, the sender sends the OAM information block according to a fixed period, the OAM information block is inserted into the client service code block stream, and the receiver also receives and detects the OAM information block according to the same fixed period. However, in the related art, since synchronization between the transmitting end and the receiving end is often impossible, the position where the receiving end receives and detects the OAM information block cannot correspond to the insertion position of the OAM information block, and thus cannot effectively receive and detect. OAM information block.

In the above-mentioned related art, the receiving end cannot effectively determine the expected insertion position of the OAM information block, and no effective solution has been proposed in the related art.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method and apparatus for locating an OAM information block, so as to at least solve the problem in the related art that the receiving end cannot effectively determine the desired insertion position of the OAM information block.

According to an embodiment of the present invention, a method for locating an OAM information block is provided, which is applied to a transmitting end, and the method includes:

Insert an OAM information block at a first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the deviation between the first position and the second position value, the second position is used to indicate the desired insertion position determined by the transmitting end according to the preset insertion period;

The service code block stream is sent to a receiving end, so that the receiving end can determine the second position at least according to the position deviation information.

According to another embodiment of the present invention, a method for locating an OAM information block is also provided, which is applied to a receiving end, and the method includes:

Receive the service code block stream sent by the sending end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the position deviation information is used for Indicate the deviation value between the first position and the second position, and the second position is used to indicate the desired insertion position determined by the transmitting end according to a preset insertion period;

The second position is determined based on at least the position deviation information.

According to another embodiment of the present invention, a device for locating an OAM information block is also provided, which is arranged at the sending end, and the device includes:

The inserting module is configured to insert an OAM information block at the first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the first position and the second position. The deviation value between the positions, the second position is used to indicate the desired insertion position determined by the sending end according to the preset insertion period;

The sending module is configured to send the service code block stream to the receiving end, so that the receiving end can determine the second position at least according to the position deviation information.

According to another embodiment of the present invention, a device for locating an OAM information block is also provided, which is arranged at a receiving end, and the device includes:

The receiving module is configured to receive the service code block stream sent by the sending end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the The position deviation information is used to indicate the deviation value between the first position and the second position, and the second position is used to indicate the expected insertion position determined by the sending end according to a preset insertion period;

A determination module, configured to determine the second position at least according to the position deviation information.

According to another embodiment of the present invention, a computer-readable storage medium is also provided, and a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute any one of the above methods when running steps in the examples.

According to another embodiment of the present invention, there is also provided an electronic device, comprising a memory and a processor, wherein the memory stores a computer program, the processor is configured to run the computer program to execute any of the above Steps in Method Examples.

Description of drawings

1 is a schematic diagram of a format of a data block provided according to an embodiment of the present invention;

2 is a schematic diagram of a format of a control block provided according to an embodiment of the present invention;

3 is a schematic diagram of the format of an O block provided according to an embodiment of the present invention;

4 is a schematic diagram of a format of a code block stream provided according to an embodiment of the present invention;

5 is a schematic diagram of an OAM information block transmission cycle provided according to an embodiment of the present invention;

6 is a schematic diagram of the format of an OAM information block provided according to an embodiment of the present invention;

7 is a schematic diagram of the format of inserting an OAM information block into a customer service code block stream provided according to an embodiment of the present invention;

8 is a schematic diagram of the deviation between the actual position and the expected insertion position of the OAM information block inserted into the client service code block stream provided according to an embodiment of the present invention;

9 is a schematic diagram of a process of adding and deleting IDLE blocks caused by a clock frequency deviation between devices provided according to an embodiment of the present invention;

10 is a schematic diagram of the expected position deviation of a transmitter and a receiver under a clock frequency deviation provided according to an embodiment of the present invention;

11 is a schematic diagram of a client service code block stream being transmitted in a network according to an embodiment of the present invention;

12 is a flowchart (1) of a method for locating an OAM information block provided according to an embodiment of the present invention;

13 is a schematic diagram (1) of an OAM information block carrying a deviation value between an actual insertion position and an expected insertion position provided according to an embodiment of the present invention;

14 is a schematic diagram (2) of an OAM information block carrying a deviation value between an actual insertion position and an expected insertion position according to an embodiment of the present invention;

15 is a flowchart (2) of a method for locating an OAM information block provided according to an embodiment of the present invention;

16 is a structural block diagram (1) of a method for locating an OAM information block provided according to an embodiment of the present invention;

FIG. 17 is a structural block diagram (2) of a method for locating an OAM information block according to an embodiment of the present invention.

detailed description

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

It should be noted that the terms "first", "second" and the like in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence.

In order to further illustrate the method and device for locating OAM information blocks in the embodiments of the present invention, the following describes the application scenarios of the methods and devices for locating OAM information blocks in the embodiments of the present invention:

When delivering Ethernet client services in FlexE service implementation, Ethernet packets can be formed into 66-length code blocks according to the 64/66 encoding rules. Each of the above code blocks is composed of 66 bits, wherein the first two bits indicate whether the code block is a data block or a control block. Fig. 1 is a schematic diagram of the format of a data block provided according to an embodiment of the present invention. In the code block shown in Fig. 1, when the value of the first two bits is "01", it indicates that the code block is a data block, and the following 64 bits Indicates the data content of 8 bytes, namely data0 to data7 shown in Figure 1. Fig. 2 is a schematic diagram of the format of a control block provided according to an embodiment of the present invention. In the code block shown in Fig. 2, when the value of the first two bits is "10", it indicates that the code block is a control block, and the following 8 bits are a control block. The bit (the first byte) indicates the type of control block, and the following 56 bits indicate 7 bytes of control block information. Common control block types are: S block, T block, IDLE block, O block, etc.; among them, the S block represents the start block of a message; the T block represents the end block of a message; the IDLE block (which can be referred to as I block) represents a free block that does not carry any useful information; O block represents a fault information block. FIG. 3 is a schematic diagram of the format of an O block provided according to an embodiment of the present invention. As shown in FIG. 3 , the control value in the O block is 0x4B (hexadecimal value), indicating that the control block is an O block. The first three bytes in the O block are the fault information value, and the next 4 bits carry the serial number of the O block, indicating various sub-types of the O block. The currently enabled serial numbers can be 0, 1, 2, 5, F ( hexadecimal value), etc. Fig. 4 is a schematic diagram of the format of a code block stream provided according to an embodiment of the present invention. An Ethernet packet is 64/66 encoded to form a code block stream as shown in Fig. 4, and the above Ethernet packet starts with an S block, In the middle are several D blocks, ending with a T block. Between two Ethernet packets, there will be several IDLE blocks and O blocks.

In order to monitor the service quality of the FlexE client stream delivery pipeline, an OAM information block that can implement monitoring functions is added to the client service code block stream to detect the QoS status of the FlexE client bearer pipeline, such as bit error rate, delay time, and service discard. and other functions. The OAM information block is a special information code block. On the network source device, the OAM information block is inserted between two client packets before and after, and sent out together with the client service code block stream. At the sink device of the network, the content of the OAM information block is detected in order to measure the quality of the pipeline carrying the customer. In an example, the OAM block is sent at the transmitting end according to a fixed period (for example, once every 16K code blocks is sent), and the receiving end also receives according to the same fixed period. When the receiving end does not receive the OAM information block for three consecutive cycles, it means that the pipeline carrying the customer service is interrupted, and protection needs to be started. The above-mentioned fixed period for sending the OAM information block by the transmitting end may be 16K, 32, 64K, etc., and the fixed period for receiving and detecting by the receiving end is the same as the fixed period for the transmitting end.

The types of OAM information blocks can be: base type OAM blocks (used for error detection), APS type OAM blocks (used for protection switching), CV type OAM blocks (used to transmit client identifiers), DM type OAM blocks OAM block (used for delay time measurement), OAM block of CSF type (used to indicate customer service failure indication), etc. FIG. 5 is a schematic diagram of an OAM information block sending cycle provided according to an embodiment of the present invention, as shown in FIG. 5 , The above-mentioned different types of OAM information blocks can be periodically sent according to the format shown in FIG. 5 . A transmission period T is between any adjacent OAM information blocks, and different types of OAM blocks are sent according to a certain interval rule. Similarly, the receiving end also receives and detects the OAM information block according to the period and interval rules of the transmitting end. In an example, the receiving end can retrieve the OAM information block at a fixed position to realize the reception and detection of the OAM information block.

FIG. 6 is a schematic diagram of the format of an OAM information block provided according to an embodiment of the present invention. As shown in FIG. 6 , a sequence number value (for example: 0xC, hexadecimal) can be extended to an existing O block to represent an OAM information block. A type field is also set in the OAM information block to represent various types of OAM blocks, such as base-type OAM blocks, APS-type OAM blocks, CV-type OAM blocks, DM-type OAM blocks, and CSF-type OAM blocks information blocks, etc. In the OAM information block, several bytes after the type field are used to carry the content of the OAM information block, and the content of the above-mentioned different types of OAM block types is different.

FIG. 7 is a schematic diagram of the format of inserting an OAM information block into a client service code block stream provided according to an embodiment of the present invention. As shown in FIG. 7 , the OAM information block is inserted between the intervals of adjacent packets in the client service code block stream. sent. At the sending end, when the position where the OAM information block is expected to be inserted happens to be an idle information block, that is, an IDLE block, the OAM information block can directly replace the original IDLE block to realize the insertion. When the position of inserting the OAM information block is exactly between two packets, but there is no free information block between the two packets before and after, the OAM information block is directly inserted between the preceding and following packets, and the forced queue insertion method is used to realize the insertion. , the subsequent client packets are moved backward in sequence; in this way, the OAM information block can be sent together with the client service code block stream.

The sending cycle of the sending end sending the OAM information block is to determine the insertion position of the OAM information block according to a fixed period. This insertion position can be called the expected insertion position, but because the length of the message is uncertain, sometimes it cannot be inserted at the expected insertion position. OAM information block. The following is an example to illustrate the process of transmitting the Ethernet client service, the process of inserting the OAM information block at the transmitting end and receiving and detecting the OAM information block at the receiving end:

The sender sets a T period counter when sending the OAM information block. For example, when T=16K, every time the counter counts to the 16K position, it means that the sender needs to insert an OAM information block, and this moment is the expected insertion position of the OAM block of the sender. . If the expected insertion position is between the two packets before and after the client service code block stream, the OAM information block can be inserted directly. In this case, the expected insertion position is the same as the actual insertion position. If the expected insertion position is in the middle of a packet In this case, the OAM information block needs to be inserted after the transmission of the current message is completed. In this case, the expected insertion position and the actual insertion position are different. At the receiving end, a T period counter is correspondingly set. For example, when T=16K, each time the counter counts to the 16K position, it indicates the expected receiving position of the receiving end, and it is expected to receive an OAM information block at this position. If the position is in the middle of a packet, there should be an OAM information block after the current packet is received.

FIG. 8 is a schematic diagram of the deviation between the actual position and the expected insertion position of the OAM information block inserted into the client service code block stream provided according to an embodiment of the present invention. As shown in FIG. 8 , when the expected insertion position is exactly in the middle of a client message In this case, the OAM information block cannot be directly inserted forcibly, and the OAM information block can only be inserted at the end of the packet after the current packet is sent. In the above situation, the actual insertion position of the OAM information block is between the expected insertion position. After the interval ΔT, the actual insertion position is not the expected insertion position, and there is a positional deviation between the two. At this time, if the receiving end still receives and detects the OAM information block according to the expected receiving position corresponding to the expected insertion position, it is actually unable to receive the OAM information block, thereby causing a failure. In some cases, the expected receiving position of the receiver and the actual insertion position of the sender are very different, which can reach more than one OAM block period, which in turn causes the OAM information block received by the receiver at the expected receiving position to be within the period of other OAM blocks. The type of OAM information block, ie the actually received OAM information block may be different from the expected type of OAM information block.

On the other hand, the above-mentioned transmitting end and receiving end both send and receive OAM information blocks according to the same period T, however, the clock frequencies of various devices in the network are not consistent. 9 is a schematic diagram of a process of adding and deleting IDLE blocks caused by clock frequency deviation between devices according to an embodiment of the present invention. As shown in FIG. 9 , when the upstream and downstream clock frequencies of devices in the network are inconsistent, Add or delete a small number of idle information blocks IDLE to adjust the actual speed of the customer service code block flow, and realize the matching between the speed of the customer service code block flow and the device clock speed. Due to the clock frequency deviation between the working clocks of each device, the period of sending or receiving the OAM information block generated according to the clock frequency, that is, the value of the T period, is inconsistent. Therefore, the T period of the sender and the T period of the receiver There may be slight differences between the values in actual work. The above differences accumulate over time, and the expected insertion position generated by the sender according to the T period and the expected receiving position generated by the receiver according to the T period will gradually widen the gap. FIG. 10 is a schematic diagram of the expected position deviation of the transmitter and the receiver under the clock frequency deviation provided according to an embodiment of the present invention. As shown in FIG. 10 , the expected receiving position generated by the receiver is inconsistent with the expected insertion position of the transmitter, and the receiver cannot The OAM information block is received and detected according to the desired receiving position. At the same time, according to the aforementioned phenomenon, due to the deviation between the position where the sender actually inserts the OAM information block and the expected insertion position, there is an IDLE block addition or deletion state when the client service code block stream is transmitted on the network. According to the schematic diagram of the client service code block stream being transmitted in the network provided by the embodiment of the present invention, as shown in FIG. 11 , the position of the OAM information block inserted in the client service code block stream will fluctuate before and after in the client service code block stream, Further, it is difficult for the receiving end to accurately judge the desired insertion position of the transmitting end.

In this regard, embodiments of the present invention provide a method and device for locating an OAM information block, which can solve the problem in the related art that the receiving end cannot effectively determine the desired insertion position of the OAM information block, so that the receiving end can effectively The desired insertion position of the OAM information block in the transmitting end is determined, so that the receiving end can ensure the effect of receiving the corresponding OAM information block. The following describes the method and device for locating an OAM information block in the embodiments of the present invention:

On the one hand, an embodiment of the present invention provides a method for locating an OAM information block, which is applied to a transmitting end. FIG. 12 is a flowchart (1) of a method for locating an OAM information block provided according to an embodiment of the present invention, as shown in FIG. 12 , The method for locating the OAM information block in the embodiment of the present invention includes:

S102, insert an OAM information block at a first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the deviation value between the first position and the second position, and the second position The position is used to indicate the desired insertion position determined by the sending end according to the preset insertion period;

S104: Send the service code block stream to the receiving end, so that the receiving end can determine the second position at least according to the position deviation information.

It should be noted that the above-mentioned first position is the actual insertion position where the sender actually inserts the OAM information block in the service code block stream, and the above-mentioned second position is the sender's expectation of inserting the OAM information block in the service code block stream. The insertion position, the first position and the second position may be the same, that is, the actual insertion position is the same as the expected insertion position, for example, the expected insertion position is between two packets. The first position and the second position can also be different, that is, there is a certain deviation between the actual insertion position and the expected insertion position. For example, the expected insertion position is in the middle of a packet; The actual insertion position is compared, and the actual insertion position is compared with the expected insertion position, and then the deviation value is determined, and the deviation value can be indicated by the position deviation information. In this way, by carrying the position deviation information in the OAM information block, the deviation value can be notified to the receiving end.

When the receiving end receives the service code block stream in which the OAM information block is inserted, the expected insertion position of the OAM information block can be determined from the position deviation information carried in the OAM information block. The implementation of the receiving end determining the second position is described below by way of an optional example:

In an optional example, in the above step S104, the receiving end determines the second position at least according to the position deviation information, including:

The receiver determines the first position according to the third position, and determines the second position according to the deviation information between the first position and the position; wherein, the third position is used to indicate the position where the receiver actually receives the OAM information block.

It should be noted that in the process of receiving the service code block stream, when the receiving end receives the OAM information block, the position where the OAM information block is actually received can be taken as the third position; after that, the receiving end can further use the first The three positions are equivalent to the first position, that is, the receiving end uses its own actual receiving position as the actual insertion position of the sending end, so as to realize the determination of the first position according to the third position. In the case of determining the first position, the second position can be determined according to the deviation information between the first position and the position.

In an optional example, after the receiving end determines the first position according to the third position, and determines the second position according to the information of the deviation between the first position and the position, the method further includes:

The receiving end adjusts the fourth position according to the deviation between the second position and the fourth position; wherein, the fourth position is used to indicate the expected receiving position determined by the receiving end according to the preset receiving period;

The receiving end receives the subsequent OAM information block at the adjusted fourth position.

It should be noted that after the receiving end determines the second position, it can adjust its desired receiving position, that is, the fourth position, according to the second position. In this way, the expected receiving position of the receiving end and the expected insertion position of the transmitting end can be relatively consistent, so that the next expected receiving position generated by the receiving end and the expected insertion position of the transmitting end can basically match, so as to ensure that the receiving end can The OAM information block enables efficient reception and detection. The following is an example to illustrate the implementation of the above-mentioned receiving end adjusting the fourth position:

In an optional example, the receiving end adjusts the fourth position according to the deviation between the second position and the fourth position, including:

The receiving end adjusts the fourth position according to the deviation between the second position and the fourth position, so that the deviation between the adjusted fourth position and the second position is less than or equal to a preset threshold.

It should be noted that, in an example, the preset threshold may be 0, that is, the expected receiving position of the receiving end and the expected insertion position of the transmitting end are completely consistent.

In an optional example, in the above step S102, inserting an OAM information block at the first position in the service code block stream, further comprising:

OAM information blocks are respectively inserted into multiple first positions in the service code block stream, and at least one OAM information block is selected from the multiple OAM information blocks to carry the position deviation information.

It should be noted that, in this embodiment of the present invention, the position deviation information may be carried in each OAM information block, or the OAM information block may be periodically selected to carry the position deviation in multiple OAM information blocks according to a preset carrying period. information, or at least one OAM information block may be randomly selected from a plurality of OAM information blocks to carry the position deviation information, and the embodiment of the present invention does not limit the carrying manner of the position deviation information.

In an optional embodiment, the above-mentioned OAM information block also carries an insertion period. It should be noted that, in this way, the receiving end can easily determine the expected insertion position of the transmitting end according to the period value and the deviation value, thereby further realizing the calibration of the expected receiving position of the receiving end.

With the method for locating the OAM information block in the embodiment of the present invention, because the OAM information block carrying the position deviation information can be inserted at the first position in the service code block stream sent by the sender, so that the receiver can use the position deviation information at least according to the position deviation information. Determine the second position; wherein, the position deviation information is used to indicate the deviation value between the first position and the second position, and the second position is used to indicate the expected insertion position determined by the sending end according to the preset insertion period. Therefore, the embodiment of the present invention can solve the problem that the receiving end cannot effectively determine the desired insertion position of the OAM information block in the related art, so that the receiving end can effectively determine the desired insertion position of the OAM information block in the transmitting end, Thus, the receiving end can ensure the effect of receiving the corresponding OAM information block.

To further illustrate the method for locating the OAM information block in the embodiment of the present invention, two exemplary embodiments are used to describe the following:

Exemplary Embodiment 1

In this exemplary embodiment, the situation that the OAM information block fluctuates due to the addition or deletion of IDLE blocks on the OAM information block network is not considered. The deviation value between the actual insertion position and the expected insertion position of the OAM information block can be carried in the OAM information block. FIG. 13 is an OAM information block carrying the deviation value between the actual insertion position and the expected insertion position according to an embodiment of the present invention. Schematic diagram (1) of the above-mentioned OAM information block after carrying the deviation between the actual insertion position of the OAM information block and the expected insertion position in the OAM information block is as shown in FIG. 13 . The following describes the process of inserting the OAM information block by the transmitting end and receiving and detecting the OAM information block by the receiving end in this exemplary embodiment:

When the sender inserts the OAM information block, the OAM information block also carries the position deviation value between the actual insertion position and the expected insertion position. In an example, the actual insertion position is the same as the expected insertion position, and the position deviation value carried in the OAM information block is 0. In this case, the offset value with the position deviation value of 0 can be carried, or the deviation value can be carried by not carrying the deviation value. The method indicates that the position deviation value is 0; in another example, the actual insertion position and the expected insertion position are inconsistent, and there is an offset ΔT between the actual insertion position and the expected insertion position (ΔT needs to distinguish between positive and negative values), then the This ΔT is carried in the OAM information block as a position offset value.

When the receiving end receives the OAM information block, the receiving end equates the actual receiving position of the OAM information block with the actual insertion position of the transmitting end OAM information block, that is, according to the actual position of the OAM information block currently received by the receiving end, to determine the sending end's actual position. actual insertion position. Further, according to the position deviation value carried in the OAM information block and the actual insertion position of the sender determined above, the receiver can accurately estimate the expected insertion position of the sender.

After the receiving end infers the expected insertion position of the transmitting end, the receiving end can compare the expected receiving position generated by itself according to the preset fixed period with the expected insertion position of the transmitting end. If they are the same, the expected position of the transmitting end and that of the receiving end are indicated match. If they are different, it means that the expected position of the sender does not match the expected position of the receiver, and there is a deviation in the expected position of the receiver. Therefore, the next expected receiving position generated by the receiving end and the expected insertion position of the transmitting end can be basically consistent.

Exemplary Embodiment 2

In this exemplary embodiment, since each node on the network continuously adds and deletes IDLE information blocks, the position of the OAM information block fluctuates in the client service code block stream. The actual insertion position of the OAM information block of the sender and the actual received OAM information of the receiver The block positions may not correspond exactly. In extreme cases, every time the customer service code block stream passes through two devices, the position of the OAM information block will move forward and backward by one position, and the fluctuation range is one block. In an example, when there are 20 devices on the network, after the actual insertion position of the OAM passes through the 20 devices, the fluctuation range is within 10.

In the above situation, in order to realize that the receiving end can effectively determine the expected insertion position of the OAM information block by the transmitting end, the deviation value between the actual insertion position and the expected insertion position of the OAM information block can be carried in the OAM information block, as shown in Figure 14. It is a schematic diagram (2) of the OAM information block carrying the deviation value between the actual insertion position and the expected insertion position provided according to an embodiment of the present invention, and the above-mentioned deviation of the actual insertion position and the expected insertion position of the OAM information block is carried in the OAM information block. The OAM information block after the value is shown in Figure 14. The following describes the process of inserting the OAM information block by the transmitting end and receiving and detecting the OAM information block by the receiving end in this exemplary embodiment:

When the receiving end receives the OAM information block, because in this exemplary embodiment, each node on the network continuously adds and deletes the IDLE information block, resulting in fluctuations in the position of the OAM information block in the customer service code block stream; there are 20 on the network. Take the device as an example. After 20 devices, the actual insertion position of OAM will fluctuate within 10. Therefore, the actual receiving position of the OAM information block received by the receiver is not equal to the actual insertion position of the OAM information block of the sender. There is an error of less than 10 between them. Therefore, if the receiving end uses the actual receiving position as the actual insertion position of the transmitting end, and further infers the expected insertion position of the transmitting end according to the position deviation value carried in the OAM information block, then the expected insertion position estimated by the receiving end is the same as that of the transmitting end. There is an error within 10 between the insertion positions. Since the insertion period T of the transmitting end is generally at least 16K, the ratio between the error and the insertion period is at most 10:16384. Since the ratio is too small, it can be ignored in the actual working process.

Therefore, in the present exemplary embodiment, when each device on the network has IDLE additions and deletions, there is a certain deviation in the expected insertion position of the sender obtained by the receiver according to the above process, but since the error is less than n/2 (n is the client on the network) The number of devices that the service code block stream passes through), which is too small compared to the insertion period of the sender, so it can be ignored for the expected insertion position estimated by the receiver.

Due to the clock deviation between the sender and the receiver, the expected receiving position of the receiver and the expected insertion position of the sender after the above calibration are basically consistent, after working for a period of time, the expected receiving position of the receiver and the expected insertion position of the sender Errors will gradually develop between them, and the errors will increase over time. Therefore, in this exemplary embodiment, the OAM information block can periodically carry the position deviation value between the actual insertion position and the expected insertion position, that is, the offset ΔT, so that the receiving end can periodically receive, Through judgment and calibration, the expected receiving position of the receiving end can always follow the expected insertion position of the transmitting end, so that the receiving end can always receive and retrieve the OAM information block at the expected receiving position.

In the implementation process, in addition to the above offset ΔT, the OAM information block can also carry the insertion period of the sender, as shown in Figure 14. In this way, the receiver can easily judge the sender's expectation based on the period value and the deviation value. Insertion position, so as to further realize the calibration of the desired receiving position of the receiving end.

From the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD-ROM), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

On the other hand, an embodiment of the present invention also provides a method for locating an OAM information block, which is applied to a receiving end. FIG. 15 is a flowchart (2) of the method for locating an OAM information block according to an embodiment of the present invention, as shown in FIG. 15 . As shown, the method for locating the OAM information block in the embodiment of the present invention includes:

S202: Receive the service code block stream sent by the sending end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the position deviation information is used to indicate the difference between the first position and the first position. The deviation value between the two positions, the second position is used to indicate the desired insertion position determined by the sending end according to the preset insertion period;

S204, at least determine the second position according to the position deviation information.

In an optional example, in the foregoing step S204, determining the second position at least according to the position deviation information includes:

The first position is determined according to the third position, and the second position is determined according to the deviation information between the first position and the position; wherein, the third position is used to indicate the position where the receiving end actually receives the OAM information block.

In an optional example, after the first position is determined according to the third position and the second position is determined according to the first position and position deviation information, the method further includes:

Adjust the fourth position according to the deviation between the second position and the fourth position; wherein, the fourth position is used to indicate the expected receiving position determined by the receiving end according to the preset receiving period;

The subsequent OAM information block is received at the adjusted fourth position.

In an optional example, the above-mentioned adjusting the fourth position according to the deviation between the second position and the fourth position includes:

The fourth position is adjusted according to the deviation between the second position and the fourth position, so that the deviation between the adjusted fourth position and the second position is less than or equal to a preset threshold.

In an optional example, the above-mentioned OAM information block also carries an insertion period.

It should be noted that the optional examples and technical effects of the above-mentioned OAM information block positioning method applied to the receiving end are all corresponding to the aforementioned OAM information block positioning method applied to the transmitting end, so they are not repeated here.

On the other hand, an embodiment of the present invention further provides an OAM information block positioning apparatus, which is set at the transmitting end, and is used to implement the above-mentioned embodiments and preferred implementations, and what has been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementations in hardware, or a combination of software and hardware, are also possible and contemplated.

FIG. 16 is a structural block diagram (1) of an apparatus for locating an OAM information block provided according to an embodiment of the present invention. As shown in FIG. 16 , the apparatus for locating an OAM information block in the embodiment of the present invention includes:

The inserting module 302 is configured to insert the OAM information block at the first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the deviation between the first position and the second position value, the second position is used to indicate the desired insertion position determined by the transmitting end according to the preset insertion period;

The sending module 304 is configured to send the service code block stream to the receiving end, so that the receiving end can determine the second position at least according to the position deviation information.

In an optional example, the receiving end determines the second position at least according to the position deviation information, including:

The receiving end determines the first position according to the third position, and determines the second position according to the first position and the position deviation information; wherein, the third position is used to indicate the position where the receiving end actually receives the OAM information block.

In an optional example, the above-mentioned inserting the OAM information block at the first position in the service code block stream also includes:

It should be noted that the remaining optional examples and technical effects of the above-mentioned OAM information block locating apparatus provided at the transmitting end are all corresponding to the aforementioned OAM information block locating method applied to the transmitting end, so they are not repeated here.

It should be noted that the above modules can be implemented by software or hardware, and the latter can be implemented in the following ways, but not limited to this: the above modules are all located in the same processor; or, the above modules can be combined in any combination The forms are located in different processors.

On the other hand, an embodiment of the present invention further provides a device for locating an OAM information block, which is arranged at a receiving end, and is used to implement the above embodiments and preferred implementations, and what has been described will not be repeated. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, implementations in hardware, or a combination of software and hardware, are also possible and contemplated.

FIG. 17 is a structural block diagram (2) of an apparatus for locating an OAM information block provided according to an embodiment of the present invention. As shown in FIG. 17 , the apparatus for locating an OAM information block in the embodiment of the present invention includes:

The receiving module 402 is configured to receive the service code block stream sent by the transmitting end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the position deviation information is used to indicate the first position in the service code block stream. A deviation value between a position and a second position, where the second position is used to indicate a desired insertion position determined by the transmitting end according to a preset insertion period;

The determining module 404 is configured to determine the second position at least according to the position deviation information.

In an optional example, the above-mentioned determining of the second position at least according to the position deviation information includes:

It should be noted that the remaining optional examples and technical effects of the above-mentioned OAM information block locating device disposed at the receiving end are all corresponding to the aforementioned OAM information block locating method applied to the receiving end, so they are not repeated here.

On the other hand, an embodiment of the present invention also provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, wherein the computer program is configured to execute any one of the above method embodiments when running steps in .

In an exemplary embodiment, the above-mentioned computer-readable storage medium may include, but is not limited to, a USB flash drive, a read-only memory (Read-Only Memory, referred to as ROM for short), and a random access memory (Random Access Memory, referred to as RAM for short) , mobile hard disk, magnetic disk or CD-ROM and other media that can store computer programs.

On the other hand, an embodiment of the present invention also provides an electronic device, including a memory and a processor, where a computer program is stored in the memory, and the processor is configured to run the computer program to execute any one of the above method embodiments. A step of.

In an exemplary embodiment, the above-mentioned electronic device may further include a transmission device and an input-output device, wherein the transmission device is connected to the above-mentioned processor, and the input-output device is connected to the above-mentioned processor.

For specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiments and exemplary implementation manners, and details are not described herein again in this embodiment.

Obviously, those skilled in the art should understand that the above-mentioned modules or steps of the present invention can be implemented by a general-purpose computing device, and they can be centralized on a single computing device or distributed in a network composed of multiple computing devices On the other hand, they can be implemented in program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, can be performed in a different order than shown here. Or the described steps, or they are respectively made into individual integrated circuit modules, or a plurality of modules or steps in them are made into a single integrated circuit module to realize. As such, the present invention is not limited to any particular combination of hardware and software.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included within the protection scope of the present invention.

Claims

A method for locating an OAM information block, applied to a transmitting end, the method comprising:

Insert an OAM information block at a first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the deviation between the first position and the second position value, the second position is used to indicate the desired insertion position determined by the transmitting end according to the preset insertion period;

The service code block stream is sent to a receiving end, so that the receiving end can determine the second position at least according to the position deviation information.
The method according to claim 1, wherein the receiving end determines the second position at least according to the position deviation information, comprising:

The receiving end determines the first position according to the third position, and determines the second position according to the deviation information between the first position and the position; wherein, the third position is used to indicate that the receiving end actually The location where the OAM information block is received.
The method according to claim 2, wherein after the receiving end determines the first position according to the third position, and determines the second position according to the information on the deviation between the first position and the position, the method further comprises:

The receiving end adjusts the fourth position according to the deviation between the second position and the fourth position; wherein the fourth position is used to indicate an expected receiving position determined by the receiving end according to a preset receiving period ;

The receiving end receives the subsequent OAM information block at the adjusted fourth position.
The method according to claim 3, wherein the receiving end adjusts the fourth position according to the deviation between the second position and the fourth position, comprising:

The receiving end adjusts the fourth position according to the deviation between the second position and the fourth position, so that the adjusted deviation between the fourth position and the second position is less than or equal to Preset threshold.
The method according to any one of claims 1 to 4, wherein the inserting the OAM information block at the first position in the service code block stream further comprises:

The OAM information blocks are respectively inserted into multiple first positions in the service code block stream, and at least one of the OAM information blocks is selected from the multiple OAM information blocks to carry the position deviation information.
The method according to any one of claims 1 to 4, wherein the insertion period is further carried in the OAM information block.
A method for locating an OAM information block, applied to a receiving end, the method comprising:

Receive the service code block stream sent by the sending end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the position deviation information is used for Indicate the deviation value between the first position and the second position, and the second position is used to indicate the desired insertion position determined by the transmitting end according to a preset insertion period;

The second position is determined based on at least the position deviation information.
The method of claim 7, wherein the determining the second position based on at least the position deviation information comprises:

The first position is determined according to the third position, and the second position is determined according to the deviation information between the first position and the position; wherein, the third position is used to indicate that the receiving end actually receives the OAM The location of the information block.
The method according to claim 8, wherein after the determining the first position according to the third position and determining the second position according to the deviation information between the first position and the position, the method further comprises:

Adjust the fourth position according to the deviation between the second position and the fourth position; wherein, the fourth position is used to indicate the desired receiving position determined by the receiving end according to a preset receiving period;

The subsequent OAM information block is received at the adjusted fourth position.
The method of claim 9, wherein the adjusting the fourth position according to the deviation between the second position and the fourth position comprises:

The fourth position is adjusted according to the deviation between the second position and the fourth position, so that the adjusted deviation between the fourth position and the second position is less than or equal to a preset threshold.
The method according to any one of claims 7 to 10, wherein the insertion period is further carried in the OAM information block.
A device for locating an OAM information block, arranged at a sending end, the device comprising:

The inserting module is configured to insert an OAM information block at the first position in the service code block stream; wherein, the OAM information block carries position deviation information, and the position deviation information is used to indicate the first position and the second position. The deviation value between the positions, the second position is used to indicate the desired insertion position determined by the sending end according to the preset insertion period;

The sending module is configured to send the service code block stream to the receiving end, so that the receiving end can determine the second position at least according to the position deviation information.
A device for locating an OAM information block, arranged at a receiving end, the device comprising:

The receiving module is configured to receive the service code block stream sent by the sending end; wherein, an OAM information block is inserted into the first position in the service code block stream, and the OAM information block carries position deviation information, and the The position deviation information is used to indicate the deviation value between the first position and the second position, and the second position is used to indicate the expected insertion position determined by the sending end according to a preset insertion period;

A determination module, configured to determine the second position at least according to the position deviation information.
A computer-readable storage medium in which a computer program is stored, wherein the computer program is configured to execute the method according to any one of claims 1 to 6 when running, or A method as claimed in any one of claims 7 to 11 is carried out.
An electronic device comprising a memory and a processor, the memory having a computer program stored therein, the processor being arranged to run the computer program to perform the method of any one of claims 1 to 6, Or perform a method as claimed in any one of claims 7 to 11.