CN111342929A

CN111342929A - Information sending and receiving method and device and information processing system

Info

Publication number: CN111342929A
Application number: CN201811547814.1A
Authority: CN
Inventors: 李浩琳; 张德智; 金嘉亮; 曾涛
Original assignee: China Telecom Corp Ltd
Current assignee: China Telecom Corp Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-06-26

Abstract

The disclosure relates to an information sending and receiving method and device and an information processing system, and relates to the technical field of communication. The information sending method comprises the following steps: encapsulating the operation administration and maintenance, OAM, information into a preamble field of at least one data frame; and sending the encapsulated data frame. According to the method and the device, the OAM information is transmitted under the condition that the data field part of the original data frame is not changed, so that the transmission rate and the synchronization of the original data are ensured, and the transmission efficiency is high; and no special OAM frame is needed to bear OAM information, the processing speed is high, and the delay is low.

Description

Information sending and receiving method and device and information processing system

Technical Field

The present disclosure relates to the field of communications technologies, and in particular, to an information sending and receiving method, an apparatus thereof, and an information processing system.

Background

WDM PON (wavelength division multiplexing passive optical network) is an ideal solution for current fixed-shift convergence bearers (e.g. 5G fronthaul). However, the existing WDM PON system still lacks a good OAM (Operation Administration and maintenance) information management mechanism, which affects the scale of WDM PON usage.

The related OAM information management technology adopts special OAM frames to carry OAM information, and the OAM information is inserted into a common data frame for transmission.

Disclosure of Invention

The inventor thinks that: the related OAM information management technology occupies the data field part of the data frame, and affects the transmission rate and synchronization of the original data, thereby causing low transmission efficiency; and special OAM frames are adopted to carry OAM information, and buffer storage is required to be introduced for framing and deframing, which causes extra time delay.

Aiming at the technical problem, the method and the device provided by the disclosure have the advantages that the data field part of the original data frame is not occupied, and the transmission efficiency is high; and no special OAM frame is needed to bear the OAM information, the processing speed is higher, and the delay is low.

According to a first aspect of the present disclosure, there is provided an information sending method, including: encapsulating the operation administration and maintenance, OAM, information into a preamble field of at least one data frame; and sending the encapsulated data frame.

In some embodiments, the package comprises: segmenting the OAM information according to the length of the lead code field of the data frame to obtain at least one OAM segment and a segment serial number thereof; and modifying the preamble field of each data frame according to each OAM segment and the segment sequence number thereof.

In some embodiments, the modifying comprises: identifying a starting position of the OAM segment and a segment sequence number thereof in a preamble field of the data frame; replacing a portion of a preamble field of the data frame with the OAM segment and its segment sequence number.

In some embodiments, the modifying further comprises: replacing another portion of a preamble field of the data frame with a Cyclic Redundancy Check (CRC).

In some embodiments, the data frame is an IEEE802.3 ethernet data frame.

In some embodiments, the information sending method is performed by an optical line termination, OLT, device or an optical network unit, ONU, device.

According to a second aspect of the present disclosure, there is provided an information receiving method including: receiving at least one data frame, a preamble field of each data frame including at least a portion of the operation administration and maintenance, OAM, information; parsing a preamble field of the data frame.

In some embodiments, the preamble field of each data frame includes the OAM segment and its segment sequence number.

In some embodiments, the parsing comprises: extracting the OAM segment and a segment serial number thereof; and combining the extracted OAM segments according to the segment serial numbers to obtain the OAM information.

In some embodiments, the parsing further comprises restoring a preamble field of the data frame.

In some embodiments, the information receiving method is performed by an optical line termination, OLT, device or an optical network unit, ONU, device.

According to a third aspect of the present disclosure, there is provided an information transmitting apparatus including: an encapsulation module configured to encapsulate the operation administration and maintenance, OAM, information into a preamble field of at least one data frame; and the sending module is configured to send the encapsulated data frame.

In some embodiments, the encapsulation module comprises: a segmentation unit configured to segment the OAM information according to a length of a preamble field of the data frame, obtain at least one OAM segment and a segment number thereof, and send the OAM segment and the segment number; and a modification unit configured to receive the OAM segment and its segment sequence number and modify a preamble field of each of the data frames according to each of the OAM segment and its segment sequence number.

According to a fourth aspect of the present disclosure, there is provided an information transmitting apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform the information sending method of any of the above embodiments based on instructions stored in the memory.

According to a fifth aspect of the present disclosure, there is provided an information receiving apparatus comprising: a receiving module configured to receive at least one data frame, a preamble field of each data frame including at least a portion of the operation administration and maintenance, OAM, information; a parsing module configured to parse a preamble field of the data frame.

In some embodiments, the parsing module comprises: an extraction unit configured to extract and transmit the OAM segment and a segment number thereof; and the combination unit is configured to receive the OAM segment and the segment serial number thereof, and combine the extracted OAM segment according to the segment serial number to obtain the OAM information.

According to a sixth aspect of the present disclosure, there is provided an information receiving apparatus comprising: a memory; and a processor coupled to the memory, the processor configured to execute the information receiving method of any of the above embodiments based on instructions stored in the memory.

According to a seventh aspect of the present disclosure, an information processing method includes: the information transmission method according to any of the above embodiments and the information reception method according to any of the above embodiments.

According to an eighth aspect of the present disclosure, there is provided an information processing system comprising: the information transmission apparatus according to any one of the above embodiments; and the information receiving apparatus according to any of the above embodiments.

According to a ninth aspect of the present disclosure, there is provided a computer-storable medium having stored thereon computer program instructions that, when executed by a processor, implement at least one of the information transmitting method according to any one of the above embodiments and the information receiving method according to any one of the above embodiments.

In the above embodiment, the OAM information is transmitted without changing the data field part of the original data frame, which ensures the transmission rate and synchronization of the original data and has high transmission efficiency; and special OAM frames are not needed to bear OAM information, the processing speed is high, and the delay is low.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description, taken with reference to the accompanying drawings, in which:

fig. 1 illustrates a flow chart of an information sending method according to some embodiments of the present disclosure;

FIG. 2A illustrates a flow diagram of a packaging process according to some embodiments of the present disclosure;

FIG. 2B illustrates a flow diagram of a modification process according to some embodiments of the present disclosure;

FIG. 3 illustrates a schematic diagram of information transport using IEEE802.3 Ethernet frames in accordance with some embodiments of the present disclosure;

fig. 4 is a diagram illustrating information transmission using a dedicated OAM frame;

fig. 5 illustrates a flow chart of an information receiving method according to some embodiments of the present disclosure;

FIG. 6 illustrates a flow diagram of a parsing process according to some embodiments of the present disclosure;

FIG. 7A illustrates a block diagram of an information transmitting device, according to some embodiments of the present disclosure;

FIG. 7B illustrates a block diagram of an information receiving device, according to some embodiments of the present disclosure;

FIG. 8 illustrates a flow diagram of an information processing method according to some embodiments of the present disclosure;

FIG. 9 illustrates a block diagram of an information handling system according to some embodiments of the present disclosure;

FIG. 10A shows a block diagram of an information transmitting device, according to further embodiments of the present disclosure;

FIG. 10B shows a block diagram of an information receiving device, according to further embodiments of the present disclosure;

FIG. 11 illustrates a block diagram of a computer system for implementing some embodiments of the present disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Fig. 1 illustrates a flow chart of an information sending method according to some embodiments of the present disclosure.

As shown in fig. 1, the information sending method includes: step S1, encapsulating the OAM information into a preamble field of at least one data frame; and step S2, sending the data frame obtained by encapsulation.

The information transmission method may be performed by an OLT (Optical Line Terminal) device or an ONU (Optical Network Unit) device, for example.

In step S1, the OAM information is encapsulated into the preamble field of at least one data frame. OAM information types include event notification, operation configuration request, reply, query, link monitoring, fault monitoring, loopback control, and the like. In some embodiments, the data frame is an IEEE802.3 ethernet frame.

Fig. 2A illustrates a flow diagram of a packaging process according to some embodiments of the present disclosure.

As shown in fig. 2A, the packaging process includes steps S11 to S12.

In step S11, the OAM information is segmented according to the length of the preamble field of the data frame, and at least one OAM segment and its segment number are obtained. It should be appreciated that the user may set the byte length of the OAM segment according to the length of the preamble field of the data frame. For example, in the case where the data frame is an IEEE802.3 ethernet data frame, one OAM segment may be set to two bytes.

In step S12, the preamble field of each data frame is modified according to each OAM segment and its segment number.

Fig. 2B illustrates a flow diagram of a modification process according to some embodiments of the present disclosure.

As shown in fig. 2B, the modification may include, for example, step S121 to step S122.

In step S121, the start position of the OAM segment and its segment sequence number is identified in the preamble field of the data frame. For example, a part of a preamble field of a data frame may be replaced with a certain field value to identify a start position of an OAM segment and a segment sequence number thereof.

In step S122, a portion of the preamble field of the data frame is replaced with the OAM segment and its segment number. The segment sequence numbers are used for combining the OAM segments in sequence to obtain OAM information, and the disorder and the loss of the management information caused by transmission jitter are avoided.

As shown in fig. 2B, the modification may further include step S123, for example.

In step S123, another part of the preamble field of the data frame is replaced with CRC (Cyclic Redundancy Check). This way the accuracy and reliability of the information transmission is further increased.

Fig. 3 illustrates a schematic diagram of information transport using IEEE802.3 ethernet frames according to some embodiments of the present disclosure.

As shown in fig. 3, in the case that the data frame is an IEEE802.3 ethernet frame, the present disclosure encapsulates OAM information in a preamble field of at least one IEEE802.3 ethernet data frame to implement transmission of information. The preamble field of the IEEE802.3 ethernet data frame is 8 bytes, and the modification and replacement method of the preamble field is as follows:

byte # 1: remain unchanged, 0x 55.

Byte # 2: remain unchanged, 0x 55.

Byte # 3: the modification start bit is an SOD field, which identifies the start position of the OAM information, and is replaced by 0x55 to 0xd 5.

Byte # 4: and modifying the field into sequence No.1, and placing the upper 8 bits of the OAM segment sequence number.

Byte # 5: modified to be a sequence No.2 field, the lower 8 bits of the OAM segment sequence number are placed.

Byte # 6: modified to put the upper 8 bits of the OAM segment in the OAM1 field, field 1 of the OAM segment.

Byte # 7: modified to the OAM2 field, field 2 of the OAM segment, the lower 8 bits of the OAM segment are placed.

Byte # 8: modified as a CRC field, the field is an optional field for the aforementioned cyclic redundancy check of bytes #3 to # 7.

Fig. 4 shows a schematic diagram of implementing information transmission using a dedicated OAM frame.

As shown in fig. 4, in the related art, dedicated OAM frames are used to encapsulate OAM information and are inserted into data frames to implement transmission of OAM information.

The OAM frame resembles a normal data frame and may be implemented, for example, using a standard ethernet encapsulation structure (e.g., the OAMPDU message format) as shown in fig. 4. The Ethernet encapsulation structure indicates the Type of the OAM frame through fields such as Type and Code, and carries specific OAM information through Data/Pad fields.

In the format of OAMPDU message, Destination Address field indicates the Destination Address, namely the slow protocols Multicast Address; the Source Address field represents a Source Address, which is an independent MAC Address, and the MAC Address is related to a port for transmitting OAMPDU; the Length/Type field represents a coding format, OAMPDU adopts Type coding and carries a Slow Protocols Type domain value of 0x 8809; the Subtype field identifies the specific slow protocol being encapsulated, and the Subtype field value of the OAMPDU is 0x 03; the Flag field indicates a status bit; the Code field indicates different OAMPDU message types; the Data/Pad field is the payload of OAMPDU, and under the condition that the bytes are not used, the padding is 0 when the Data/Pad field is transmitted, and the Data/Pad field is ignored when the Data/Pad field is received; the FCS field is a frame check sequence, typically generated by the underlying MAC.

Comparing fig. 3 and fig. 4, it can be found that: compared with the mode that the OAM information is transmitted in the data frame by inserting the special OAM frame carrying OAM information into the data frame, the OAM information is packaged in the preamble field of at least one data frame to realize the transmission of the OAM information, the data field part of the original data frame is not occupied, the field format of the original data frame is not required to be changed, the transmission rate and the synchronization of the original data are not influenced, and the transmission efficiency is high; in addition, the OAM information is not required to be carried by adopting a special OAM frame, the whole data frame is not required to be unpacked when the OAM information is extracted, and a buffer is not required to be introduced, so that the processing speed is higher, the delay is lower, and the practicability is higher.

Fig. 5 illustrates a flow chart of an information receiving method according to some embodiments of the present disclosure.

As shown in fig. 5, the information receiving method includes: step R1 to step R2. The information receiving method may be performed by, for example, an OLT apparatus or an ONU apparatus.

In step R1, at least one data frame is received, the preamble field of each data frame including at least a portion of the OAM information. The preamble field of the data frame is adopted to carry at least one part of OAM information, the data field part of the original data frame is not changed, the transmission rate and the synchronization of the original data are ensured, and the transmission efficiency is high; and special OAM frames are not needed, so that the cache is not needed, the processing speed is high, and the delay is low. It should be appreciated that in the case where the OAM information is long in byte length, the OAM information will be carried by multiple data frames.

In step R2, the preamble field of the data frame is parsed. The preamble field includes, for example, an OAM segment and its segment sequence number.

FIG. 6 illustrates a flow diagram of a parsing process according to some embodiments of the present disclosure.

As shown in fig. 6, the parsing process includes: step R21, extracting OAM section and section sequence number from preamble field of data frame; and step R22, the extracted OAM segments are combined according to the segment sequence numbers to obtain OAM information. The method ensures the accuracy and reliability of OAM information transmission.

In some embodiments, the parsing process further includes step R23. In step R23, the preamble field of the data frame is restored to obtain the data frame before encapsulation.

Fig. 7A illustrates a block diagram of an information transmitting apparatus according to some embodiments of the present disclosure.

As shown in fig. 7A, the information transmission device 7S includes: an encapsulation module 71S configured to encapsulate the OAM information into a preamble field of at least one data frame, e.g. to perform step S1 shown in fig. 1; the sending module 72S is configured to send the encapsulated data frame, for example, to execute step S2 shown in fig. 1.

In some embodiments, the encapsulation module 71S further includes: a segmenting unit 711S configured to segment the OAM information according to the length of the preamble field of the data frame, obtain at least one OAM segment and a segment number thereof, and send, for example, execute step S11 shown in fig. 2A; a modifying unit 712S configured to receive the OAM segment and its segment sequence number and modify the preamble field of each data frame according to each OAM segment and its segment sequence number, e.g. perform step S12 shown in fig. 2A.

Fig. 7B illustrates a block diagram of an information receiving device, according to some embodiments of the present disclosure.

As shown in fig. 7B, the information receiving apparatus 7R includes: a receiving module 71R configured to receive at least one data frame, a preamble field of each data frame including at least a portion of the OAM information, e.g., to perform step R1 shown in fig. 5; a parsing module 72R configured to parse the preamble field of the data frame, for example, perform step R2 shown in fig. 5. The preamble field of each data frame includes, for example, an OAM segment and its segment sequence number.

In some embodiments, parsing module 72R further comprises: an extracting unit 721R configured to extract the OAM segment and its segment sequence number and transmit, e.g., perform step R21 shown in fig. 6; the combining unit 722R is configured to receive the OAM segment and its segment sequence number, and combine the extracted OAM segment according to the segment sequence number to obtain OAM information, for example, perform step R22 shown in fig. 6.

FIG. 8 illustrates a flow diagram of an information processing method according to some embodiments of the present disclosure.

As shown in fig. 8, the information processing method includes steps 801 to 809. Steps 801 to 805 are executed by the information transmitting apparatus, and steps 806 to 809 are executed by the information receiving apparatus.

In step 801, a data message is received and transmitted. In some embodiments, the received data packets are further filtered to filter out unnecessary interference packets.

In step 802, the message is forwarded after being exchanged according to the destination MAC, VLAN, etc. information of the data message. It should be appreciated that message exchange is one way of data transfer.

In step 803, the OAM information is segmented according to the length of the preamble field of the data frame, resulting in at least one OAM segment and its segment number. It should be understood that the data fields carried by the data packets and the data frames are the same, and both are two existing forms at different layers of the OSI (Open System Interconnection) reference model.

In step 804, the preamble field of each data frame is modified according to each OAM segment and its segment number, resulting in at least one encapsulated data frame.

In step 805, the encapsulated data frame is transmitted to the information receiving apparatus.

In step 806, at least one encapsulated data frame is received, the preamble field of each data frame including at least a portion of the OAM information.

In step 807, the OAM segment and its segment number are extracted from the preamble field of the encapsulated data frame, and the preamble field of the data frame is restored to obtain the data frame before encapsulation and sent.

In step 808, the data frame before encapsulation is received, and the packet is forwarded after being exchanged according to the destination MAC, VLAN, etc. information of the data packet.

In step 809, the extracted OAM segments are combined according to the segment sequence numbers to obtain OAM information. And finishing the management of operation configuration, link monitoring and the like of the corresponding equipment according to the OAM information.

FIG. 9 illustrates a block diagram of an information handling system according to some embodiments of the present disclosure.

As shown in fig. 9, the information processing system 9 includes: an information transmission device 91 configured to transmit information; and an information receiving device 92 configured to receive the information.

In some embodiments, the information processing system 9 further comprises a physical optical link and device 93 configured to connect the information sending apparatus 91 and the information receiving apparatus 92 for transmitting data. In a WDM PON application scenario, for example, data may be transmitted using wavelength division multiplexing techniques, and the physical optical links and devices 93 include WDM PON ports, wavelength-division combiners.

The information transmission device 91 includes: a first port messaging unit 911; a first packet switching and forwarding unit 912; a first OAM management unit 913; a first preamble processing unit 914 and a message transmitting unit 915.

The first port messaging unit 911 is configured to receive and transmit data messages. The first packet switching and forwarding unit 912 is configured to receive a data packet, perform packet switching, and forward the data packet. The first OAM management unit 913 is configured to segment OAM information according to a length of a preamble field of the data frame, obtain at least one OAM segment and a segment number thereof, and transmit. The first preamble processing unit 914 is configured to modify the preamble field of each received data frame according to each received OAM segment and its segment sequence number, resulting in an encapsulated data frame and transmitting it. A message sending unit 915 configured to send the received encapsulated data frame to the information receiving apparatus.

It should be understood that the first OAM management unit 913 may correspond to the segmentation unit 711S shown in fig. 7A, and the first preamble processing unit 914 may correspond to the modification unit 712S shown in fig. 7A. The first preamble processing unit belongs to, for example, a board, and can process a plurality of ports of the entire board at the same time, thereby processing a plurality of data frames at the same time. The first preamble processing unit can be integrated in the MCU or CPU of the board card, or can be implemented separately.

The information receiving device 92 includes: a message receiving unit 925; a second preamble processing unit 924; a second OAM management unit 923; a second message switching and forwarding unit 922 and a second port message transceiving unit 921.

The message receiving unit 925 is configured to receive the encapsulated data frame. The second preamble processing unit 924 is configured to extract the OAM segment and its segment sequence number from the preamble field of the encapsulated data frame, restore the preamble field of the data frame, obtain the data frame before encapsulation, and transmit the data frame. The second OAM management unit 923 is configured to combine the extracted OAM segments according to the segment sequence numbers, resulting in OAM information. The second message switching and forwarding unit 922 is configured to receive the data frame before encapsulation, perform message switching, and forward the data frame. The second port messaging unit 921 is configured to receive and transmit data messages.

It should be understood that the second OAM management unit 923 may correspond to the extracting unit 721R shown in fig. 7B, and the second preamble processing unit 924 may correspond to the combining unit 722R shown in fig. 7B. The second preamble processing unit belongs to, for example, a board, and can process a plurality of ports of the entire board at the same time, thereby processing a plurality of data frames at the same time. The second preamble processing unit can be integrated in the MCU or CPU of the board card, or can be implemented separately.

The information processing system 9 may be configured to execute an OLT downstream direction information processing method or an ONU upstream direction information processing method in a WDM PON scenario.

In the case of executing the OLT downstream direction information processing method, the information transmitting device 91 may be an OLT apparatus, and the corresponding information receiving device 92 may be an ONU apparatus. The data message comes from the network side and is correspondingly sent to the user side. The first port message receiving and sending unit is an upper connection port message receiving and sending unit, and the corresponding second port message receiving and sending unit is a lower connection port message receiving and sending unit.

In the case of executing the ONU upstream information processing method, the information transmitting device 91 may be an ONU apparatus, and the corresponding information receiving device 92 may be an OLT apparatus. The data message comes from the user side and is correspondingly sent to the network side. The first port message receiving and sending unit is a lower connection port message receiving and sending unit, and the corresponding second port message receiving and sending unit is an upper connection port message receiving and sending unit.

FIG. 10A shows a block diagram of an information transmitting device, according to further embodiments of the present disclosure.

As shown in fig. 10A, the information transmission device 10S includes: a memory 101S; and a processor 102S coupled to the memory 101S, the memory 101S being configured to store instructions for performing the corresponding embodiment of the method. The processor 102S is configured to perform the information transmission method in any of the embodiments of the present disclosure based on instructions stored in the memory 101S.

FIG. 10B illustrates a block diagram of an information receiving device, according to further embodiments of the present disclosure.

As shown in fig. 10B, the information receiving apparatus 10R includes: a memory 101R; and a processor 102R coupled to the memory 101R, wherein the memory 101R is used for storing instructions for executing the corresponding embodiment of the information receiving method. The processor 102R is configured to execute the information receiving method in any of the embodiments of the present disclosure based on instructions stored in the memory 101R.

As shown in FIG. 11, computer system 110 may take the form of a general purpose computing device. Computer system 110 includes a memory 1110, a processor 1120, and a bus 1100 that connects the various system components.

The memory 1110 may include, for example, system memory, non-volatile storage media, and the like. The system memory stores, for example, an operating system, an application program, a Boot Loader (Boot Loader), and other programs. The system memory may include volatile storage media such as Random Access Memory (RAM) and/or cache memory. The non-volatile storage medium stores, for example, instructions to perform corresponding embodiments of at least one of the information transmitting method and the information receiving method. Non-volatile storage media include, but are not limited to, magnetic disk storage, optical storage, flash memory, and the like.

The processor 1120 may be implemented as discrete hardware components, such as a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gates or transistors, or the like. Accordingly, each of the modules, such as the judging module and the determining module, may be implemented by a Central Processing Unit (CPU) executing instructions in a memory for performing the corresponding step, or may be implemented by a dedicated circuit for performing the corresponding step.

Bus 1100 may employ any of a variety of bus architectures. For example, bus structures include, but are not limited to, Industry Standard Architecture (ISA) bus, Micro Channel Architecture (MCA) bus, and Peripheral Component Interconnect (PCI) bus.

The computer system 110 may also include input-output interfaces 1130, network interfaces 1140, storage interfaces 1150, and the like. These

interfaces

1130, 1140, 1150 and the memory 1110 and the processor 1120 may be connected by a bus 1100. The input/output interface 1130 may provide a connection interface for an input/output device such as a display, a mouse, and a keyboard. The network interface 1140 provides a connection interface for various networking devices. The storage interface 1140 provides a connection interface for external storage devices such as a floppy disk, a usb disk, and an SD card.

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable apparatus to produce a machine, such that the execution of the instructions by the processor results in an apparatus that implements the functions specified in the flowchart and/or block diagram block or blocks.

These computer-readable program instructions may also be stored in a computer-readable memory that can direct a computer to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instructions which implement the function specified in the flowchart and/or block diagram block or blocks.

The present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.

By the information sending and receiving method, the device and the information processing system in the embodiment, OAM information transmission can be realized, and the requirements of low-delay, high-speed and reliable service application and management are met. The information sending and receiving method can transmit OAM information under the condition of not changing the data field format of the bearing data frame, thereby ensuring the original data transmission rate and synchronization and having high transmission efficiency; and special OAM frames are not needed, so that extra cache is not needed, the processing speed is high, and the delay is low.

Furthermore, the OAM information is segmented, and a unique segment serial number is added to each segment, so that the OAM segments can be combined in sequence, and the accuracy and reliability of OAM information transmission are ensured. In addition, the CRC check code field is optionally added, so that the accuracy and reliability of information transmission are further improved. The information receiving method can extract and combine OAM segments to obtain OAM information without decapsulating the whole data frame, and is high in processing speed, strong in practicability and low in delay.

So far, the information transmitting and receiving method, apparatus, processing system and computer-readable storage medium according to the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Claims

1. An information sending method, comprising:

encapsulating the operation administration and maintenance, OAM, information into a preamble field of at least one data frame;

and sending the encapsulated data frame.

2. The information transmission method of claim 1, wherein the encapsulating comprises:

segmenting the OAM information according to the length of the lead code field of the data frame to obtain at least one OAM segment and a segment serial number thereof;

and modifying the preamble field of each data frame according to each OAM segment and the segment sequence number thereof.

3. The information transmitting method of claim 2, wherein the modifying comprises:

identifying a starting position of the OAM segment and a segment sequence number thereof in a preamble field of the data frame;

replacing a portion of a preamble field of the data frame with the OAM segment and its segment sequence number.

4. The method of transmitting information of claim 3, wherein the modifying further comprises: replacing another portion of a preamble field of the data frame with a Cyclic Redundancy Check (CRC).

5. The information transmission method according to claim 1, wherein the data frame is an IEEE802.3 ethernet data frame.

6. The information transmission method according to claim 1, wherein the information transmission method is performed by an Optical Line Termination (OLT) device or an Optical Network Unit (ONU) device.

7. An information receiving method, comprising:

receiving at least one data frame, a preamble field of each data frame including at least a portion of the operation administration and maintenance, OAM, information;

parsing a preamble field of the data frame.

8. The information receiving method according to claim 7, wherein the preamble field of each data frame includes an OAM segment and a segment sequence number thereof.

9. The information receiving method according to claim 8, wherein the parsing includes:

extracting the OAM segment and a segment serial number thereof;

and combining the extracted OAM segments according to the segment serial numbers to obtain the OAM information.

10. The information receiving method according to claim 9, wherein the parsing further comprises restoring a preamble field of the data frame.

11. The information receiving method according to claim 7, wherein the information receiving method is performed by an Optical Line Termination (OLT) device or an Optical Network Unit (ONU) device.

12. An information transmission apparatus comprising:

an encapsulation module configured to encapsulate the operation administration and maintenance, OAM, information into a preamble field of at least one data frame;

and the sending module is configured to send the encapsulated data frame.

13. The information transmission apparatus according to claim 12, wherein the encapsulation module includes:

a segmentation unit configured to segment the OAM information according to a length of a preamble field of the data frame, obtain at least one OAM segment and a segment number thereof, and send the OAM segment and the segment number; and

a modification unit configured to receive the OAM segment and its segment sequence number and modify a preamble field of each of the data frames according to each of the OAM segment and its segment sequence number.

14. The information transmission apparatus according to claim 13, wherein the modification includes:

15. An information transmission apparatus comprising:

a memory; and

a processor coupled to the memory, the processor configured to perform the method of any of claims 1-6 based on instructions stored in the memory.

16. An information receiving apparatus comprising:

a receiving module configured to receive at least one data frame, a preamble field of each data frame including at least a portion of the operation administration and maintenance, OAM, information;

a parsing module configured to parse a preamble field of the data frame.

17. The information receiving apparatus according to claim 16, wherein the preamble field of each data frame includes an OAM segment and a segment sequence number thereof.

18. The information receiving apparatus according to claim 17, wherein the parsing module includes:

an extraction unit configured to extract and transmit the OAM segment and a segment number thereof;

and the combination unit is configured to receive the OAM segment and the segment serial number thereof, and combine the extracted OAM segment according to the segment serial number to obtain the OAM information.

19. An information receiving apparatus comprising:

a memory; and

a processor coupled to the memory, the processor being configured to execute the information receiving method of any one of claims 7 to 11 based on instructions stored in the memory.

20. An information processing method comprising:

the information transmission method according to any one of claims 1 to 6; and

an information receiving method as claimed in any one of claims 7 to 11.

21. An information processing system comprising:

the information transmission apparatus according to any one of claims 12 to 15; and

an information receiving apparatus as claimed in any one of claims 16 to 19.

22. A computer-storable medium having stored thereon computer program instructions which, when executed by a processor, implement at least one of an information transmitting method according to any one of claims 1 to 6 and an information receiving method according to any one of claims 7 to 11.