CN112492410B

CN112492410B - OAM information transmission method, device, equipment and medium for mobile forwarding

Info

Publication number: CN112492410B
Application number: CN201910879397.9A
Authority: CN
Inventors: 陈松; 张源斌; 刘爱华
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2023-07-21
Anticipated expiration: 2039-09-12
Also published as: CN112492410A; WO2021047663A1

Abstract

The application provides an OAM information transmission method, an OAM information transmission device, OAM information transmission equipment and an OAM information transmission medium for mobile forwarding. The mobile forwarding OAM information transfer method comprises the following steps: OAM information is sent to the receiving side equipment through an OAM channel, so that the OAM function of the sending side equipment is realized; the OAM channels are constructed at two ends of the mobile forwarding.

Description

OAM information transmission method, device, equipment and medium for mobile forwarding

Technical Field

The present application relates to the field of communications, and in particular, to a method, an apparatus, a device, and a medium for implementing OAM (Operation Administration and Maintenance, operation, management, and maintenance) of mobile forwarding.

Background

Mobile fronthaul is a connection between AAU (Active Antenna Unit ) and DU (Distributed Unit). Current mobile fronthaul schemes include fiber direct drive, passive WDM (Wavelength Division Multiplexing ), active OTN (Optical Transport Network, optical transport network), etc. Among them, passive WDM schemes are widely used. Fig. 1 is a schematic diagram of a prior art mobile forwarding semi-passive semi-active network topology. As shown in fig. 1, the network topology includes AAU, OMU (Optical Multiplexing Unit ), ODU (Optical Demultiplexing Unit, optical demultiplexing unit), and DU parts. Wherein the AAU side corresponds to a passive WDM side, and the DU side corresponds to an active WDM side.

Because the equipment on the passive WDM side is positioned near the base station and is not supported by a management plane, and the equipment on the passive WDM side is passive and lacks the operation and maintenance functions of flexible management of wavelengths and modules, performance monitoring and the like, performance monitoring alarm cannot be realized, and flexible management of module level cannot be supported.

Disclosure of Invention

The application provides an OAM information transmission method, an OAM information transmission device, OAM information transmission equipment and an OAM information transmission medium for mobile forwarding, and management and maintenance of the equipment are achieved.

In a first aspect, an embodiment of the present application provides a method for transmitting OAM information of a mobile forwarding, which is applied to a transmitting side device, including:

OAM information is sent to the receiving side equipment through an OAM channel, so that the OAM function of the sending side equipment is realized; wherein,,

the OAM channel is constructed at two ends of the mobile forwarding.

In a second aspect, an embodiment of the present application provides a method for transmitting OAM information in mobile forwarding, which is applied to a receiving side device, including:

OAM information sent by a sending side device is received through an OAM channel, so that an OAM function of the sending side device is realized; wherein,,

the OAM channel is constructed at two ends of the mobile forwarding.

In a third aspect, an embodiment of the present application provides an OAM information transfer apparatus for mobile forwarding, configured in a transmitting side device, including:

The first information sending module is used for sending OAM information to the receiving side equipment through an OAM channel so as to realize the OAM function of the sending side equipment; wherein,,

the OAM channel is constructed at two ends of the mobile forwarding.

In a fourth aspect, an embodiment of the present application provides an OAM information transfer apparatus for mobile forwarding, configured in a receiving side device, including:

the first information receiving module is used for receiving the OAM information sent by the sending side equipment through an OAM channel so as to realize the OAM function of the sending side equipment; wherein,,

the OAM channel is constructed at two ends of the mobile forwarding.

In a fifth aspect, an embodiment of the present application provides a transmitting side device, including:

one or more processors;

a storage means for storing one or more programs;

the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the OAM information delivery method for mobile forwarding as described in the first aspect of the embodiments of the present application.

In a sixth aspect, an embodiment of the present application provides a storage medium, where a computer program is stored, where the computer program is executed by a processor to implement the OAM information transfer method for mobile forwarding according to the first aspect of the embodiment of the present application.

In a seventh aspect, embodiments of the present application provide a receiving-side apparatus, including:

one or more processors;

a storage means for storing one or more programs;

the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the OAM information delivery method for mobile forwarding as described in the second aspect of the embodiments of the present application.

In an eighth aspect, an embodiment of the present application provides a storage medium, where a computer program is stored, where the computer program is executed by a processor to implement the OAM information transfer method for mobile forwarding according to the second aspect of the embodiment of the present application.

According to the embodiment of the application, the sending side equipment sends the OAM information to the receiving side equipment through the OAM channels constructed at the two ends of the mobile forwarding, so that the management and maintenance of the equipment are realized.

With respect to the above examples and other aspects of the present application and their implementation, further description is provided in the accompanying description, detailed description and claims.

Drawings

Fig. 1 is a schematic diagram of a prior art mobile fronthaul semi-passive semi-active network topology;

fig. 2 is a flow chart of an OAM information transfer method of mobile forwarding provided in the present application;

Fig. 3 is a schematic diagram of an effect of inserting an OAM packet into a packet interval in the middle of a MAC packet according to the present application;

fig. 4 is a schematic diagram of an effect of setting an identification code at an OAM packet preamble location according to the present application;

fig. 5 is a schematic diagram of an effect of setting an identification code at a destination address of an OAM packet according to the present application;

fig. 6 is a schematic diagram of an effect of inserting an OAM block according to a period of a first alignment mark provided in the present application;

fig. 7 is a schematic diagram of an effect of inserting an OAM block according to a custom period provided in the present application;

fig. 8 is a schematic diagram of an effect of inserting an OAM block after a first alignment identifier provided in the present application;

fig. 9 is a schematic diagram of an effect of replacing an IDLE block with an OAM block according to the present application;

fig. 10 is a schematic diagram of an effect of inserting an OAM block between a T block and an S block provided in the present application;

fig. 11 is a schematic diagram of an effect of inserting an OAM block after a second alignment identifier provided in the present application;

fig. 12 is a schematic diagram of an effect of wavelength adaptation of a transmitting device provided in the present application;

fig. 13 is a schematic diagram of a link loopback effect provided in the present application;

fig. 14 is a schematic diagram of a general format of OAM information provided in the present application;

Fig. 15 is a schematic diagram of an OAM information format provided in the present application;

fig. 16 is a flow chart of an OAM information transfer method for mobile forwarding provided in the present application;

fig. 17 is a schematic diagram of an OTDR loop-back effect provided in the present application;

fig. 18 is a schematic diagram of an ethernet processing module on a receiving side provided in the present application;

fig. 19 is a schematic flow chart of a process for decapsulating ethernet data in a PCS layer at a receiving side provided in the present application;

FIG. 20 is a schematic diagram of a 100GBASE-RAM code provided herein;

FIG. 21 is a schematic diagram of a 25GBASE-R CWM code provided herein;

fig. 22 is a schematic structural diagram of an OAM information transmission device for mobile forwarding provided in the present application;

fig. 23 is a schematic structural diagram of a signal receiving apparatus provided in the present application;

fig. 24 is a schematic structural diagram of a transmitting side device provided in the present application;

fig. 25 is a schematic structural diagram of a receiving-side device provided in the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.

In an exemplary embodiment, fig. 2 is a schematic flow chart of a mobile-to-mobile OAM information delivery method provided in the present application. The method can be applied to the case that the transmitting side device transmits the OAM information to the receiving side device. The method can be executed by the mobile-forwarded OAM information transfer device provided by the application, and the mobile-forwarded OAM information transfer device can be realized by software and/or hardware and is integrated on the transmitting side equipment.

As shown in fig. 2, the method for transmitting OAM information in mobile forwarding provided in the present application includes S110.

S110, OAM information is sent to the receiving side equipment through an OAM channel so as to realize the OAM function of the sending side equipment.

The OAM channels are constructed at two ends of the mobile forwarding.

The receiving side device may be a mobile forwarding receiving side related device, such as a DU, and the transmitting side device may be a mobile forwarding transmitting side related device, such as an AAU, and the like. The OAM information may be information including performance, alarm, wavelength, and maintenance functions of the device, and is used to manage and maintain the transmitting device, and the embodiment of the present application does not limit a specific format of the OAM information.

In the embodiment of the application, the OAM channels are constructed at the two ends of the mobile front-end, so that the sending side equipment sends OAM information to the receiving side equipment through the OAM channels, the OAM function of the sending side equipment is realized, the wavelength and the module are flexibly managed, and the purpose of equipment performance alarm monitoring is realized.

In the embodiment of the application, the sending side device can send the OAM information to the receiving side device through the OAM channels constructed at the two ends of the mobile forwarding, so that the management and maintenance of the device are realized.

On the basis of the above embodiments, modified embodiments of the above embodiments are proposed, and it is to be noted here that only the differences from the above embodiments are described in the modified embodiments for the sake of brevity of description.

In one example, the OAM channel is built on a MAC (Media Access Control Address ) layer at both ends of the mobile fronthaul; the sending OAM information to the receiving side device through the OAM channel may include: processing the Ethernet data to obtain an MAC packet; OAM packets are inserted into the intervals of the two MAC packets according to a first preset period; wherein, the OAM packet is identified by setting an identification code; and sending the OAM packet to the receiving side equipment through the OAM channel.

The first preset period may be a fixed period set according to implementation requirements, for example, every 100 MAC packets are used as the first preset period. The setting identifier may be an identifier for identifying the OAM packet, and any identifier that can be used for identifying the OAM packet may be used as the setting identifier, and the type and content of the setting identifier are not limited in this application.

In the embodiment of the present application, optionally, the OAM channel may be constructed between MAC layers at both ends of the mobile fronthaul. The transmitting side device may process ethernet data to obtain MAC packets, insert an OAM packet in the interval between two MAC packets according to a first preset period, and distinguish the OAM packet from a normal ethernet MAC packet by setting an identification code. Fig. 3 is a schematic diagram of an effect of inserting an OAM packet into a packet interval in the middle of a MAC packet, where, as shown in fig. 3, a transmitting side device may process the OAM packet through a bottom layer and send the OAM packet to a receiving side device after the OAM packet is inserted into the MAC packet interval. The preamble, the delimiter, the destination, the source address, the length/type, the data packet and the frame check sequence are fields of the MAC packet.

In one example, the set identifier is located at a position of a preamble or a position of a destination address of the OAM packet.

Fig. 4 is a schematic diagram of an effect of setting an identifier at a preamble position of an OAM packet according to the present application, and fig. 5 is a schematic diagram of an effect of setting an identifier at a destination address position of an OAM packet according to the present application. In this embodiment of the present application, optionally, as shown in fig. 4 and fig. 5, the set identifier may be located at the position of the preamble of the OAM packet or at the position of the destination address. When the set identification code is located at the position of the preamble, one byte or a plurality of bytes of the preamble can be occupied, as shown in fig. 4, the first byte of the preamble is occupied; when the set identification code is located at the destination address, the set identification code can be used as a special MAC address and is different from the common MAC address.

In one example, the OAM channels are built on a PCS (Process Control System ) layer at both ends of the mobile fronthaul; the sending OAM information to the receiving side device through the OAM channel may include: processing the Ethernet data to obtain PCS layer data; inserting an OAM block according to the first alignment mark of the PCS layer data; and sending the OAM block to the receiving side equipment through the OAM channel.

The first Alignment identifier may be an Alignment identifier included in the PCS layer data, such as an AM (Alignment Marker) in the PCS layer data.

In the embodiment of the present application, optionally, the OAM channel may also be constructed between PCS layers at both ends of the mobile fronthaul. The transmitting side device and the receiving side device may communicate OAM frames within an OAM channel, one OAM frame containing one or more OAM blocks. Alternatively, the OAM block may be a data block or a control block. Accordingly, the transmitting device may insert an OAM block according to the first alignment identifier, and transmit the OAM block to the receiving device through the OAM channel.

In one example, the inserting the OAM block according to the first alignment identifier of the PCS layer data may include: under the condition that the PCS layer data comprises the first alignment mark, inserting the OAM block after the first alignment mark according to a second preset period; and when the second preset period is a custom period, the OAM block is identified by setting an identification head.

The second preset period may be a custom period or a period of the first alignment mark, which is not limited in this embodiment of the present application. The setting identifier header may be an identifier header for identifying an OAM block, and the embodiment of the present application does not limit the specific content of the setting identifier header.

When the OAM block is inserted according to the first alignment identifier of the PCS layer data, the transmitting device needs to consider two cases. In the case where the PCS layer data includes the first alignment identifier, the OAM block may be inserted after the first alignment identifier according to the second preset period. Fig. 6 is a schematic view of an effect of inserting an OAM block according to a period of a first alignment identifier provided in the present application, and fig. 7 is a schematic view of an effect of inserting an OAM block according to a custom period provided in the present application. Alternatively, as shown in fig. 6, the transmitting device may insert the OAM block after the first alignment mark according to the periodicity of the first alignment mark, and may insert the OAM block in the first channel or all channels. As shown in fig. 7, the transmitting device may insert the OAM block after the first alignment identifier according to the custom period, and define a configuration identifier header for distinguishing the data block from other control blocks for the OAM block, so as to identify the OAM block by the configuration identifier header.

In one example, after the first alignment identifier according to the PCS layer data is inserted into an OAM block, it may include: and deleting part of IDLE (IDLE state) blocks in the PCS layer data.

Fig. 8 is a schematic view of an effect of inserting an OAM block after a first alignment identifier provided in the present application, and correspondingly, as shown in fig. 8, if a PCS layer data includes the first alignment identifier, and a transmitting side device inserts the OAM block after the first alignment identifier according to a second preset period, a portion of IDLE blocks in the PCS layer data may be deleted subsequently to perform rate compensation.

In one example, the inserting the OAM block according to the first alignment identifier of the PCS layer data may include: under the condition that the PCS layer data does not comprise the first alignment mark, replacing an IDLE state IDLE block between a T block and an S block in the PCS layer data with the OAM block according to a third preset period; wherein, the OAM block is identified by setting an identification head.

The third preset period may be a custom period, which is not limited in this embodiment of the present application.

Accordingly, in the case where the PCS layer data does not include the first alignment identifier, the OAM channel may be one or more OAM blocks, and the OAM blocks may be distinguished by setting the identifier header and other control blocks.

Fig. 9 is a schematic diagram of an effect of replacing an IDLE block with an OAM block according to the present application, where, as shown in fig. 9, a transmitting side device may periodically replace the IDLE block between a T block and an S block in PCS layer data with an OAM block according to a custom period.

In one example, the inserting the OAM block according to the first alignment identifier of the PCS layer data may include: and inserting the OAM block between the T block and the S block under the condition that the third preset period is reached and the IDLE block is not included between the T block and the S block.

The third preset period may also be a period of the OAM block, which is not limited in the embodiment of the present application.

Fig. 10 is a schematic diagram of an effect of inserting an OAM block between a T block and an S block provided in the present application, as shown in fig. 10, in a case where PCS layer data does not include a first alignment identifier, if a transmitting side device determines that an IDLE block is not included between the T block and the S block in the PCS layer data, the OAM block may be inserted between the T block and the S block when an OAM block period is reached.

In one example, after the first alignment identifier according to the PCS layer data is inserted into an OAM block, it may include: and deleting part of IDLE blocks in the PCS layer data.

Correspondingly, if the transmitting side device determines that the third preset period is reached and the IDLE block is not included between the T block and the S block under the condition that the PCS layer data does not include the first alignment identifier, after the OAM block is inserted between the T block and the S block, part of the IDLE block in the PCS layer data may be deleted subsequently to perform rate compensation.

In one example, the OAM channel is built on FEC (Forward Error Correction ) layers at both ends of the mobile fronthaul; the sending OAM information to the receiving side device through the OAM channel may include: processing the Ethernet data to obtain FEC layer data; inserting an OAM block according to the second alignment mark of the FEC layer data; and sending the OAM block to the receiving side equipment through the OAM channel.

The second alignment identifier may be an alignment identifier included in the FEC layer data, such as CWM (code marker) in the FEC layer data.

In this embodiment, optionally, an OAM channel may also be constructed between FEC layers at two ends of the mobile forwarding, where the transmitting device and the receiving device may transfer OAM frames in the OAM channel, where an OAM frame includes one or more OAM blocks. Specifically, the transmitting side device may process the ethernet data to obtain FEC layer data, insert an OAM block according to the second alignment identifier of the FEC layer data, and send the OAM block to the receiving side device through the OAM channel.

In one example, the inserting the OAM block according to the second alignment identifier of the FEC layer data may include: processing the FEC layer data to obtain PCS layer data under the condition that the FEC layer data does not comprise the second alignment mark; processing the PCS layer data according to a preset data processing mode to obtain processed PCS layer data; the preset data processing mode comprises code block synchronization and alignment locking; inserting the OAM block after a first alignment mark in the processed PCS layer data according to a second preset period; and when the second preset period is a custom period, the OAM block is identified by setting an identification head.

In this embodiment of the present application, for the case where the FEC layer data does not include the second alignment identifier, the transmitting side device may perform processing such as channel alignment rearrangement, RS-FEC (Reed Solomon FEC) decoding, and transcoding from 256b/257b to 64b/66b on the FEC layer data, and then distribute the data to the PCS layer. After the PCS layer data is processed by channel code block synchronization, alignment locking and the like, the transmitting side device can insert the OAM block after the first alignment mark according to the periodicity of the first alignment mark according to the method for constructing the OAM channel between the PCS layers at the two ends of the mobile forward link, or insert the OAM block after the first alignment mark according to the custom periodicity, and define a set identification head for distinguishing the data block and other control blocks for the OAM block so as to identify the OAM block through the set identification head. Correspondingly, after the transmitting side device inserts the OAM block after the first alignment identifier according to the second preset period, a portion of the IDLE block in the PCS layer data may be deleted later to perform rate compensation. The transmitting device may then scramble the data to which the OAM block is added, FEC layer encapsulation, PMA (Physical Media Attachment, physical medium adaptation layer) and PMD (Physical Media Dependent, physical medium association layer interface) processing, and transmit the data to the receiving device.

In one example, the inserting the OAM block according to the second alignment identifier of the FEC layer data may include: inserting the OAM block after the second alignment mark according to a fourth preset period under the condition that the FEC layer data comprises the second alignment mark; wherein, the OAM block is identified by setting an identification head.

The fourth preset period may be a period of the second alignment mark or a custom period, which is not limited in the embodiment of the present application.

In this embodiment of the present application, in a case where the FEC layer data includes the second alignment identifier, the transmitting side device may insert the OAM block after the second alignment identifier according to the periodicity of the second alignment identifier, and may insert the OAM block in the first channel or all channels. The transmitting side device may insert the OAM block after the second alignment identifier according to the custom period, and define a setting identifier header for distinguishing the data block from other control blocks for the OAM block, so as to identify the OAM block by the setting identifier header.

In one example, after the inserting the OAM block after the second alignment mark according to the fourth preset period, it may include: and deleting part of IDLE blocks in the PCS layer data under the condition that the PCS layer data corresponding to the FEC layer data are inserted into the second alignment mark.

Fig. 11 is a schematic diagram of an effect of inserting an OAM block after a second alignment identifier provided in the present application, and correspondingly, as shown in fig. 11, after inserting the OAM block after the second alignment identifier according to a fourth preset period, a transmitting side device may delete a portion of an IDLE block in PCS layer data to perform rate compensation. It should be noted that, the transmitting side device may delete a portion of the IDLE blocks in the PCS layer data while inserting the PCS layer data corresponding to the FEC layer data into the second alignment identifier.

In summary, the OAM channel is constructed based on the PCS layer or the FEC layer at the two ends of the mobile forwarding, and the method of replacing the IDLE block with the OAM block, or inserting the OAM block between the T block and the S block, or inserting the OAM block after the alignment identifier is also implemented, which is flexible and various. In particular, the OAM is inserted after the alignment mark (AM or CWM), the OAM is inserted according to the period of the alignment mark, the period can be strictly ensured, descrambling is not needed, and the processing is relatively simple.

In one example, the OAM information delivery method of the mobile forwarding may further include: receiving a first Ethernet frame sent by the receiving side equipment through the OAM channel; analyzing the first Ethernet frame to obtain first OAM information; tuning a second transmission wavelength according to a first reception wavelength included in the first OAM information; adding the second transmission wavelength and the second reception wavelength to second OAM information; and inserting the second OAM information into a second Ethernet frame and feeding back the second OAM information to the receiving side equipment through the OAM channel.

The first ethernet frame may be an ethernet frame that the receiving-side device transmits to the transmitting-side device. The first OAM information may be OAM information included in the first ethernet frame. The first reception wavelength may be a reception wavelength configured by the reception-side device, and the first transmission wavelength may be a transmission wavelength configured by the reception-side device. The second reception wavelength may be a reception wavelength configured by the transmission side device, and the second transmission wavelength may be a transmission wavelength configured by the transmission side device. The second OAM information may be OAM information transmitted by the transmitting side device, and the second ethernet frame may be an ethernet frame transmitted by the transmitting side device to the receiving side device.

It will be appreciated that the color light modules in both the transmitting side device and the receiving side device of the mobile front-end are tunable light modules. Fig. 12 is a schematic view showing the effect of wavelength adaptation of a transmitting side device provided in the present application, in a specific example, as shown in fig. 12, a receiving side device DU may manually configure a first transmission wavelength λ1 and a first reception wavelength λ2 through a network management, and insert the first transmission wavelength λ1 and the first reception wavelength λ2 into a first ethernet frame in the form of first OAM information and send the first ethernet frame to a transmitting side device AAU. The first reception wavelength λ2 is a wavelength to be configured by the transmitting-side apparatus AAU. The transmitting side device AAU receives the first ethernet frame sent by the receiving side device DU, decodes the first OAM information, tunes its own wavelength according to the tuned step size, inserts the second transmitting wavelength and the second receiving wavelength λ4 into the second ethernet frame in the form of the second OAM information, and feeds back to the receiving side device DU, where the second transmitting wavelength λ3 is equal to the first receiving wavelength λ2, and the second receiving wavelength λ4 is equal to the first transmitting wavelength λ1.

In one example, the OAM information delivery method of the mobile forwarding may further include: receiving an Ethernet frame sent by the receiving side equipment through the OAM channel; analyzing the Ethernet frame to obtain OAM information; identifying a link loopback switch field in the OAM information; executing loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a first numerical value; and canceling loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a second numerical value.

The first value and the second value may be values set according to actual requirements, for example, the first value is 1, and the second value is 0, which is not limited in this embodiment of the present application.

In the embodiment of the application, the fault location of the equipment can also be realized by sending the OAM information through the OAM channel. Fig. 13 is a schematic diagram of a link loopback effect provided in the present application, and in a specific example, as shown in fig. 13, a receiving side device DU sends an ethernet frame to a transmitting side device AAU through an OAM channel. The transmitting side device AAU analyzes the Ethernet frame to obtain a link loopback switch field in the OAM information. If the link loopback switch field is 1, the transmitting side device AAU performs loopback processing at an OAM Block (OAM Block), and if the link loopback switch field is 0, the transmitting side device AAU cancels the loopback processing.

In one example, the OAM information may include an OAM identification header, a performance field, an alarm field, a wavelength field, and a maintenance function field; the performance field comprises at least one of input optical power, output optical power, laser bias current, module internal temperature, error code statistics and packet error statistics; the alarm field comprises at least one of an input no light alarm indication, an input weak light alarm indication, an input strong light alarm indication, an output no light alarm indication, an output weak light alarm indication, an output strong light alarm indication, a bias current excessive alarm indication, a module temperature out-of-limit alarm indication, a connection local failure alarm indication, a connection far-end failure alarm indication, a connection failure alarm indication and a synchronization loss alarm indication; the wavelength field includes at least one of a module transmit wavelength and a module receive wavelength; the maintenance function field includes at least one of a wavelength lock flag and a link loopback switch.

Fig. 14 is a schematic diagram of a general format of OAM information provided in the present application, and as shown in fig. 14, OAM information may include, but is not limited to, an OAM identifier header, a performance field, an alarm field, a wavelength field, and a maintenance function field. Fig. 15 is a schematic diagram of an OAM information format provided in the present application. In a specific example, as shown in fig. 15, the OAM information may include, but is not limited to, specifically 1 byte of input optical power, 1 byte of output optical power, 1 byte of laser bias current, 1 byte of module internal temperature, 1 bit of input no light alarm indication, 1 bit of input weak light alarm indication, 1 bit of input strong light alarm indication, 1 bit of output no light alarm indication, 1 bit of output weak light alarm indication, 1 bit of output strong light alarm indication, 1 bit of bias current excessive alarm indication, 1 bit of module temperature out-of-limit alarm indication, 7 bit of module transmit wavelength, 7 bit of module receive wavelength, 1 bit of wavelength lock flag, 1 bit of link loop back switch, 2 bytes of Bip (BitInterleaving Parity, bit interleaved parity) error code statistics, 2 bytes of packet error statistics, 1 bit of connection local failure alarm indication, 1 bit connection far end failure alarm indication, 1 bit connection failure alarm indication and 1 bit of synchronization loss alarm indication. The system comprises an input optical power, an output optical power, a laser bias current, a module internal temperature, bip error code statistics and packet error statistics, wherein the statistics are used for monitoring the performance of a transmitting side device, namely a passive WDM side device; the module transmitting wavelength and the module receiving wavelength are used for flexibly managing the wavelength of the transmitting side equipment, namely the passive WDM side module; the input/output is free of light, weak light and strong light, the internal temperature of the module is out of limit, the bias current is overlarge, the connection is failed locally or remotely, the connection is failed, the synchronization is lost, the alarm monitoring of the sending side equipment, namely the passive WDM side equipment, the wavelength locking mark is used for updating the result of port wavelength negotiation matched with the receiving side equipment and the sending side equipment, the link loop-back switch is used for OAM Block loop-back of the sending side equipment, and the function is to locate faults, namely whether the locating faults come from wireless equipment or from wired equipment.

Aiming at the performances of input and output optical power, laser bias current, module internal temperature, bip error code statistics, error packet statistics and the like, and the alarms of no light, weak light, strong light alarms, module temperature out-of-limit alarms, over-bias current alarms, local failure alarms, far-end failure alarms, connection failure alarms, synchronization loss and the like, the sending side equipment packages the OAM information into an Ethernet frame and sends the Ethernet frame to the receiving side equipment. The receiving side device analyzes the Ethernet frame to obtain OAM information, and according to the performance and the alarm, the receiving side device can obtain the related information of the transmitting side device, so as to master the device condition of the transmitting side device. Once the receiving side device determines that the abnormal situation occurs according to the received OAM information, corresponding countermeasures can be adopted in advance, so that flexible management of the transmitting side device is achieved.

It should be noted that the terms "first," "second," "third," and "fourth," etc. are used herein to distinguish between different objects and are not used to describe a particular order.

In an exemplary embodiment, the present application further provides a mobile-forwarding OAM information transfer method, and fig. 16 is a schematic flow chart of a mobile-forwarding OAM information transfer method provided in the present application. The method is applicable to the situation that the receiving side equipment sends OAM information to the sending side equipment, and can be executed by the mobile forward-transmitting OAM information transfer device provided by the application, wherein the mobile forward-transmitting OAM information transfer device can be realized by software and/or hardware and is integrated on the receiving side equipment. Reference may be made to the above embodiments for details of this embodiment, which are not described herein.

As shown in fig. 16, the OAM information transfer method for mobile forwarding provided in the present application includes S210.

S210, receiving OAM information sent by a sending side device through an OAM channel so as to realize the OAM function of the sending side device.

The OAM channels are constructed at two ends of the mobile forwarding.

In the embodiment of the application, by constructing the OAM channels at the two ends of the mobile front-end, the receiving side device can receive the OAM information sent by the sending side device through the OAM channels, so that the OAM function of the sending side device is realized, the wavelength and the module are flexibly managed, and the purpose of monitoring the device performance alarm is realized.

In the embodiment of the application, the receiving side device can receive the OAM information sent by the sending side device through the OAM channels constructed at the two ends of the mobile forwarding, so that the management and maintenance of the device are realized.

In one example, the OAM channels are built at the MAC layer at both ends of the mobile fronthaul; the receiving, by the OAM channel, OAM information sent by the transmitting device may include: receiving original data sent by the sending side equipment through the OAM channel; analyzing the original data to obtain MAC layer data; identifying the MAC layer data according to a set identification code to obtain an OAM packet; extracting field information in the OAM packet to acquire the equipment condition of the sending side equipment.

In this embodiment of the present application, if the OAM channel is constructed in the MAC layers at both ends of the mobile fronthaul, after the receiving side device receives the original data sent by the transmitting side device through the OAM channel, the receiving side device may parse the original data to obtain the MAC layer data. And identifying the OAM packet in the MAC layer data according to the set identification code, and extracting field information in the OAM packet to acquire the equipment condition of the sending side equipment, thereby realizing the management and maintenance of the sending side equipment.

In this embodiment of the present application, optionally, as shown in fig. 4 and fig. 5, the set identifier may be located at the position of the preamble of the OAM packet or at the position of the destination address. When the set identification code is located at the position of the preamble, one byte or a plurality of bytes of the preamble can be occupied, as shown in fig. 4, the first byte of the preamble is occupied; when the set identification code is located at the destination address, the set identification code can be used as a special MAC address and is different from the common MAC address.

In one example, the OAM channels are built on PCS layers at both ends of the mobile fronthaul; the receiving, by the OAM channel, OAM information sent by the transmitting device may include: receiving original data sent by the sending side equipment through the OAM channel; analyzing the original data to obtain PCS layer data; and extracting field information in the OAM information according to the PCS layer data to acquire the equipment condition of the sending side equipment.

In this embodiment of the present application, if an OAM channel is constructed in a PCS layer at two ends of a mobile fronthaul, after receiving, by a receiving side device, original data sent by a transmitting side device through the OAM channel, the receiving side device may parse the original data to obtain PCS layer data, and extract field information in OAM information according to the PCS layer data, so as to obtain a device status of the transmitting side device, thereby implementing management and maintenance of the transmitting side device.

In one example, the extracting field information in the OAM information according to the PCS layer data may include: locating an OAM block according to a first alignment mark in the PCS layer data; extracting field information in the OAM block.

Specifically, in the case where it is determined that the PCS layer data includes the first alignment identifier, the receiving side device may locate the OAM block according to the first alignment identifier in the PCS layer data, that is, locate the OAM block by locking the first alignment identifier, and extract field information in the OAM block.

In one example, the extracting field information in the OAM packet according to the PCS layer data may include: identifying an OAM block from the PCS layer data according to a set identification head; extracting field information in the OAM block.

Specifically, in the case where it is determined that the PCS layer data does not include the first alignment identifier, the receiving side device may identify the OAM block from the PCS layer data according to the set identifier header, and extract field information in the OAM block.

In one example, the OAM channel is built at the FEC layer at both ends of the mobile fronthaul; the receiving, by the OAM channel, OAM information sent by the transmitting device may include: receiving original data sent by the sending side equipment through the OAM channel; analyzing the original data to obtain FEC layer data; and extracting field information in the OAM information according to the FEC layer data to acquire the equipment condition of the sending side equipment.

In this embodiment of the present application, if an OAM channel is constructed in the FEC layer at both ends of the mobile fronthaul, after receiving, by the receiving side device, the original data sent by the sending side device through the OAM channel, the receiving side device may parse the original data to obtain FEC layer data, and extract field information in the OAM information according to the FEC layer data, so as to obtain the device status of the sending side device, thereby implementing management and maintenance on the sending side device.

In one example, the extracting field information in the OAM information according to the FEC layer data may include: processing the FEC layer data to obtain PCS layer data; locating an OAM block according to a first alignment mark in the PCS layer data; extracting field information in the OAM block.

Specifically, in the case that it is determined that the FEC layer data does not include the second alignment identifier, the receiving side device may process the FEC layer data to obtain PCS layer data, and illustratively, the receiving side device may process the RS-FEC layer data to obtain PCS layer data, and locate the OAM block according to the first alignment identifier in the PCS layer data to extract field information in the OAM block.

In one example, the extracting field information in the OAM packet according to the PCS layer data may include: locating an OAM block according to a second alignment mark in the FEC layer data; extracting field information in the OAM block.

Specifically, under the condition that the FEC layer data includes the second alignment identifier, the receiving side device does not need to process the FEC layer data to obtain the PCS layer data, and can directly locate the OAM block according to the second alignment identifier in the FEC layer data to extract field information in the OAM block.

In one example, the mobile-forwarded OAM information delivery may further include: configuring a first transmission wavelength and a first reception wavelength; adding the first transmission wavelength and the first reception wavelength to first OAM information; adding the first OAM information to a first Ethernet frame and transmitting the first Ethernet frame to the transmitting side equipment through the OAM channel; receiving a second Ethernet frame fed back by the sending side equipment through the OAM channel; analyzing the second Ethernet frame to obtain second OAM information; under the condition that the wavelength tuning of the transmitting side equipment is successful according to the second OAM information, updating the wavelength locking identifier by adopting the first locking identifier; otherwise, the second locking identifier is adopted to update the wavelength locking identifier, and the operation of configuring the first transmission wavelength and the first receiving wavelength is carried out in a returning mode.

It should be noted that, since the wavelength tuning is unlikely to be in place in one step, the actual transmission wavelength of the transmitting-side device AAU after the wavelength tuning is not necessarily the first reception wavelength λ2. After receiving the second ethernet frame fed back by the transmitting side device AAU, the receiving side device DU decodes the second OAM information, and determines that the second transmission wavelength λ3 is equal to the first reception wavelength λ2, and when the second reception wavelength λ4 is equal to the first transmission wavelength λ1, it indicates that the port of the transmitting side device AAU is matched with the port of the receiving side device DU, that is, the optical fiber connection is paired. However, when the wavelength actually received by the receiving side device DU is not equal to the first receiving wavelength λ2, it is indicated that the port wavelength tuning of the transmitting side device AAU pair has not been successful, at this time, the wavelength locking flag bit of the updating receiving side device DU is 0, and the transmitting side device AAU continues to perform wavelength tuning according to the step length, and so on, until the actual wavelength received by the transmitting side device AAU is equal to the first receiving wavelength λ2, at this time, it is indicated that the port wavelength tuning of the transmitting side device AAU pair is successful, and the wavelength locking flag bit of the updating receiving side device DU is 1. The method for transmitting OAM information can achieve the purpose of AAU wavelength self-adaption of the transmitting side equipment, and can prevent optical fiber misconnection.

In one example, the mobile-forwarded OAM information delivery may further include: determining that the fault originates from the wireless device under the condition that the sending side device executes loop-back processing and a receiving side device transmits a receiving link to the receiving side device is clear; and determining that the fault originates from the wired device under the condition that the sending side device executes loop-back processing and a receiving link from the receiving side device to the receiving side device is not smooth.

Specifically, in the embodiment of the present application, as shown in fig. 13, after performing loopback processing at the OAM Block of the transmitting side device AAU, and the DU is transmitted to the DU receiving link smoothly, the receiving side device may determine that the fault is from the wireless device; if the DU is not transmitted to the DU-receiving link, the receiving-side device may determine that the failure is from the wired device.

In one example, the determining that the fault originated from the wired device may include: transmitting light to the optical multiplexing unit OMU and the optical demultiplexing unit ODU in the mobile fronthaul by OTDR (Optical Time Domain Reflectometer, optical time domain reflectometer OTDR); under the condition that the OTDR receives the light of the OMU loop back, determining that the fault is derived from an optical module device; and under the condition that the OTDR does not receive the light of the OMU loop back, determining that the fault is sourced from an optical line.

Further, fault localization may be performed by OTDR. Fig. 17 is a schematic diagram of an OTDR loopback effect provided in the present application, where, as shown in fig. 17, light emitted by an OTDR loops back from an OMU through the OMU and an ODU, and the OTDR detects a loopback condition. If the OTDR receives the OMU looped-back light, the link is determined to be smooth, and the fact that the optical line has no fault is indicated, wherein the fault is derived from an optical module device. If the OTDR does not receive the OMU looped-back light, determining that the link is not smooth, and indicating that the fault is derived from the optical line.

As shown in fig. 14, the OAM information may include, but is not limited to, an OAM identification header, a performance field, an alarm field, a wavelength field, and a maintenance function field, etc. As shown in fig. 15, the OAM information may specifically include, but is not limited to, 1 byte input optical power, 1 byte output optical power, 1 byte laser bias current, 1 byte module internal temperature, 1 bit input no light alarm indication, 1 bit input weak light alarm indication, 1 bit input strong light alarm indication, 1 bit output no light alarm indication, 1 bit output weak light alarm indication, 1 bit output strong light alarm indication, 1 bit bias current excessive alarm indication, 1 bit module temperature out-of-limit alarm indication, 7 bit module transmit wavelength, 7 bit module receive wavelength, 1 bit wavelength lock flag, 1 bit link loop back switch, 2 byte Bip error statistics, 2 byte packet error statistics, 1 bit connection local failure alarm indication, 1 bit connection far end failure alarm indication, 1 bit connection failure alarm indication, and 1 bit synchronization loss alarm indication. The system comprises an input optical power, an output optical power, a laser bias current, a module internal temperature, bip error code statistics and packet error statistics, wherein the statistics are used for monitoring the performance of a transmitting side device, namely a passive WDM side device; the module transmitting wavelength and the module receiving wavelength are used for flexibly managing the wavelength of the transmitting side equipment, namely the passive WDM side module; the input/output is free of light, weak light and strong light, the internal temperature of the module is out of limit, the bias current is overlarge, the connection is failed locally or remotely, the connection is failed, the synchronization is lost, the alarm monitoring of the sending side equipment, namely the passive WDM side equipment, the wavelength locking mark is used for updating the result of port wavelength negotiation matched with the receiving side equipment and the sending side equipment, the link loop-back switch is used for OAM Block loop-back of the sending side equipment, and the function is to locate faults, namely whether the locating faults come from wireless equipment or from wired equipment.

An exemplary description will be given below of the transfer of OAM information through an OAM channel according to a transmitting-side device and a receiving-side device.

In a specific example, fig. 18 is a schematic diagram of an ethernet processing module on a receiving side provided in the present application, as shown in fig. 18, an eCPRI (forwarding network transmission interface standard) (25 GE) ethernet signal of a transmitting side device AAU is first processed by a PMD layer and a PMA layer, and then sent to an FEC layer, where the FEC layer receives data from the PMA layer, and after CWM alignment, FEC decoding, descrambling and 256b/257b to 64b/66b transcoding, the data is distributed to a PCS layer; the PCS layer obtains the data stream taking 64b/66b as a unit after carrying out block synchronization and descrambling on the received data, then sends the data stream to the RS layer through a 25GMII interface after carrying out 64b/66b decoding, and obtains the MAC packet after carrying out RS layer adaptation conversion processing. The transmitting side device may insert an OAM packet, which may be encapsulated in the form of a MAC packet, at a packet interval between two MAC packets at a fixed period, and add an identification code 0x6d, which is different from the other MAC packets, at the first byte of the preamble. Finally, the transmitting side device AAU transmits the MAC layer signal encapsulated with the OAM packet through the RS, PCS, FEC, PMA, PMD layer processing.

After receiving the ethernet signal sent by the AAU side, the receiving side device DU obtains the serial MAC packet after decapsulating the layers of PMD, PMA, FEC, PCS and RS. And searching whether the first byte of the preamble is the identification code 0x6d for the MAC packet to find the OAM packet, and analyzing fields such as performance, alarm, wavelength, maintenance function and the like in the OAM packet to acquire the equipment condition of the sending side equipment AAU. For example, the status of the optical module, whether the optical module is faulty or not is judged according to the performance field and the alarm field in the OAM information, and if the optical module is directly connected with the optical fiber normally or not, the optical module can be replaced in advance, the optical fiber can be replaced, and the like. For another example, the function of performing wavelength negotiation with the transmitting-side apparatus AAU may be achieved by the wavelength field in the OAM information. For another example, by analyzing the maintenance function field in the OAM information, the method can be used for functions such as wavelength negotiation handshake and fault location.

In a specific example, fig. 19 is a schematic flow chart of a process of decapsulating ethernet data from a receiving side to a PCS layer, as shown in fig. 19, a 100GE ethernet signal of a transmitting side device AAU is first processed by a PMD layer and a PMA layer and then sent to an FEC layer, and the FEC layer receives data from the PMA layer and distributes the data to the PCS layer after CWM alignment, FEC decoding, descrambling and 256b/257b to 64b/66b transcoding. After data distribution to the PCS layer, AM blocks of the first channel are searched for at a fixed period after block synchronization. Fig. 20 is a schematic diagram of 100GBASE-R AM coding provided in the present application, wherein the coding values of AM blocks are shown with reference to fig. 20. After the AM block is searched, an OAM block is inserted after the AM block. To distinguish between OAM blocks and data blocks and other control blocks, the inserted OAM block has a special OAM identification header, i.e. the 64b/66b encoded block type field has uniqueness, e.g. 0x6d. And then the Ethernet signal is sent out through the processes of PCS layer scrambling and distribution processing and FEC, PMA, PMD processing.

After receiving the ethernet signal sent by the transmitting side device AAU, the receiving side device DU obtains the PCS layer signal after decapsulating the layers of PMD, PMA and FEC, and then performs processing of block synchronization and alignment locking. After alignment locking is carried out on the receiving side device DU, an AM block of the first channel is found, the OAM block is searched through a block type numerical value of 0x6d, and fields such as performance, alarm, wavelength, maintenance function and the like in the OAM block are analyzed to obtain the device condition of the transmitting side device AAU. For example, the status of the optical module, whether the optical module is faulty or not is judged according to the performance field and the alarm field in the OAM information, and if the optical module is directly connected with the optical fiber normally or not, the optical module can be replaced in advance, the optical fiber can be replaced, and the like. For another example, the function of performing wavelength negotiation with the transmitting-side apparatus AAU may be achieved by the wavelength field in the OAM information. For another example, by analyzing the maintenance function field in the OAM information, the method can be used for functions such as wavelength negotiation handshake and fault location.

In a specific example, an eCPRI (25 GE) ethernet signal of the transmitting side device AAU is first processed by the PMD layer and the PMA layer and then sent to the FEC layer, where the FEC layer is first processed by Codeword marker symbol synchronization and channel rearrangement. The CWM block of the first lane is then searched. Fig. 21 is a schematic diagram of 25GBASE-R CWM coding provided in the present application, wherein the coding values of the CWM blocks are shown with reference to fig. 21. After searching the CWM block, the transmitting device AAU inserts an OAM frame behind the CWM block according to the insertion period of the CWM block, wherein one OAM frame comprises one or more OAM blocks. And then the Ethernet signal is sent out through scrambling, distributing processing, PMA and PMD processing.

After receiving the ethernet signal sent by the transmitting side device AAU, the receiving side device DU obtains the FEC layer signal after decapsulating the layers of PMD and PMA, then synchronizes with the codec marker, finds the CWM of the first channel after locking the second pair Ji Biaoshi CWM, and analyzes OAM information behind the CWM, such as a performance field, an alarm field, a wavelength field, and a maintenance function field. And acquiring the equipment status of the sending side equipment AAU according to the analysis of the fields.

In summary, on the basis that the management plane of the transmitting side device AAU does not need to be increased, the transmitting side device AAU can be better managed through the transmission of the OAM packet or the OAM block, and the fault can be effectively located. That is, the passive part only needs to do simple processing such as loop-back, marking and the like for the OAM Block. The OAM information defines a link loopback switch, a wavelength locking flag, and an out-of-limit alarm for optical power, current, and module internal temperature, and the like, and through the flags of these fields, for example, the field value is "1" or "0", and through the transmission of the OAM information, the receiving side device DU can better grasp the device status of the transmitting side device AAU and the information interaction condition of the receiving side device DU and the transmitting side device AAU. Since the calculation capability and processing capability of the passive part are far weaker than those of the active part, and the functions of time delay, time synchronization and the like requiring stronger calculation capability and processing capability are completed outside the passive device (i.e., the active part), the passive part does not need to execute all the processing related to the OAM information. That is, while the passive part adds part of the OAM processing, it results in less burden and greatly reduces the complexity of the hardware circuitry.

The application provides a mobile-forwarding OAM information transfer apparatus, fig. 22 is a schematic structural diagram of the mobile-forwarding OAM information transfer apparatus provided in the application, as shown in fig. 22, where the mobile-forwarding OAM information transfer apparatus in the embodiment of the application may be integrated on a transmitting side device. The device comprises: a first information sending module 31 configured to send OAM information to the receiving side device through the OAM channel to implement an OAM function for the transmitting side device; the OAM channels are constructed at two ends of the mobile forwarding.

The mobile frontward-transmitting OAM information transfer apparatus provided in this embodiment is used to implement the mobile frontward-transmitting OAM information transfer method of the present application, and the implementation principle and technical effects of the mobile frontward-transmitting OAM information transfer apparatus provided in this embodiment are similar to those of the mobile frontward-transmitting OAM information transfer method of the present application, and are not repeated here.

In one example, the OAM channels are built at the MAC layer at both ends of the mobile fronthaul; the first information transmission module 31 includes: the first OAM information sending unit is arranged for processing the Ethernet data to obtain an MAC packet; OAM packets are inserted into the intervals of the two MAC packets according to a first preset period; wherein, the OAM packet is identified by setting an identification code; and sending the OAM packet to the receiving side equipment through the OAM channel.

In one example, the OAM channels are built on PCS layers at both ends of the mobile fronthaul; the first information transmission module 31 includes: the second OAM information sending unit is arranged for processing the Ethernet data to obtain PCS layer data; inserting an OAM block according to the first alignment mark of the PCS layer data; and sending the OAM block to the receiving side equipment through the OAM channel.

In one example, the second OAM information transmitting unit is configured to insert the OAM block after the first alignment identifier according to a second preset period, in a case where it is determined that the PCS layer data includes the first alignment identifier; and when the second preset period is a custom period, the OAM block is identified by setting an identification head.

In an example, the second OAM information transmitting unit is configured to replace an IDLE state IDLE block between a T block and an S block in the PCS layer data with the OAM block according to a third preset period when it is determined that the PCS layer data does not include the first alignment identifier; wherein, the OAM block is identified by setting an identification head.

In one example, the second OAM information transmitting unit is configured to insert the OAM block between the T block and the S block in a case where it is determined that the third preset period is reached and an IDLE block is not included between the T block and the S block.

In one example, the second OAM information transmitting unit is configured to delete a portion of the IDLE block in the PCS layer data.

In one example, the OAM channel is built at the FEC layer at both ends of the mobile fronthaul; the first information transmission module 31 includes: the third OAM information sending unit is arranged for processing the Ethernet data to obtain FEC layer data; inserting an OAM block according to the second alignment mark of the FEC layer data; and sending the OAM block to the receiving side equipment through the OAM channel.

In an example, a third OAM information sending unit is configured to process the FEC layer data to obtain PCS layer data if it is determined that the FEC layer data does not include the second alignment identifier; processing the PCS layer data according to a preset data processing mode to obtain processed PCS layer data; the preset data processing mode comprises code block synchronization and alignment locking; inserting the OAM block after a first alignment mark in the processed PCS layer data according to a second preset period; and when the second preset period is a custom period, the OAM block is identified by setting an identification head.

In one example, the third OAM information transmitting unit is configured to insert the OAM block after the second alignment identifier according to a fourth preset period, in a case where it is determined that the FEC layer data includes the second alignment identifier; wherein, the OAM block is identified by setting an identification head.

In an example, the third OAM information transmitting unit is configured to delete a portion of the IDLE block in the PCS layer data when the PCS layer data corresponding to the FEC layer data is inserted into the second alignment identifier.

In one example, the apparatus further comprises: the first Ethernet frame receiving module is arranged to receive a first Ethernet frame sent by the receiving side device through the OAM channel; the first OAM information acquisition module is arranged for analyzing the first Ethernet frame to acquire first OAM information; a wavelength tuning module configured to tune a second transmission wavelength according to a first reception wavelength included in the first OAM information; a second wavelength information adding module configured to add the second transmission wavelength and the second reception wavelength to second OAM information; and the second OAM information feedback module is used for inserting the second OAM information into a second Ethernet frame and feeding back the second OAM information to the receiving side equipment through the OAM channel.

In one example, the apparatus further comprises: the Ethernet frame receiving module is arranged to receive the Ethernet frame sent by the receiving side equipment through the OAM channel; the OAM information acquisition module is arranged for analyzing the Ethernet frame to acquire OAM information; the field identification module is used for identifying a link loopback switch field in the OAM information; the first loop-back processing module is used for executing loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a first numerical value; and the second loop-back processing module is used for canceling loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a second numerical value.

In one example, the OAM information includes an OAM identification header, a performance field, an alarm field, a wavelength field, and a maintenance function field; the performance field comprises at least one of input optical power, output optical power, laser bias current, module internal temperature, error code statistics and packet error statistics; the alarm field comprises at least one of an input no light alarm indication, an input weak light alarm indication, an input strong light alarm indication, an output no light alarm indication, an output weak light alarm indication, an output strong light alarm indication, a bias current excessive alarm indication, a module temperature out-of-limit alarm indication, a connection local failure alarm indication, a connection far-end failure alarm indication, a connection failure alarm indication and a synchronization loss alarm indication; the wavelength field includes at least one of a module transmit wavelength and a module receive wavelength; the maintenance function field includes at least one of a wavelength lock flag and a link loopback switch.

The application further provides an OAM information transmission device for mobile forwarding, fig. 23 is a schematic structural diagram of a signal receiving apparatus provided by the application, and as shown in fig. 23, an OAM information transmission device for mobile forwarding provided by an embodiment of the application may be integrated on a receiving side device, where the device includes: a first information receiving module 41 configured to receive OAM information sent by a transmitting side device through an OAM channel, so as to implement an OAM function for the transmitting side device; the OAM channels are constructed at two ends of the mobile forwarding.

The signal receiving device provided in this embodiment is configured to implement a signal receiving method according to the embodiment of the present application, and the implementation principle and technical effects of the signal receiving device provided in this embodiment are similar to those of the signal receiving method according to the embodiment of the present application, and are not repeated here.

In one example, the OAM channels are built at the MAC layer at both ends of the mobile fronthaul; the first information receiving module 41 includes a first OAM information receiving unit configured to receive original data transmitted by the transmitting-side device through the OAM channel; analyzing the original data to obtain MAC layer data; identifying the MAC layer data according to a set identification code to obtain an OAM packet; extracting field information in the OAM packet to acquire the equipment condition of the sending side equipment.

In one example, the OAM channels are built on PCS layers at both ends of the mobile fronthaul; the first information receiving module 41 includes a second OAM information receiving unit configured to receive original data transmitted by the transmitting-side device through the OAM channel; analyzing the original data to obtain PCS layer data; and extracting field information in the OAM information according to the PCS layer data to acquire the equipment condition of the sending side equipment.

In one example, a second OAM information receiving unit is configured to locate an OAM block according to a first alignment identifier in the PCS layer data; extracting field information in the OAM block.

In one example, a second OAM information receiving unit is configured to identify an OAM block from the PCS layer data according to a set identification header; extracting field information in the OAM block.

In one example, the OAM channel is built at the FEC layer at both ends of the mobile fronthaul; the first information receiving module 41 includes a third OAM information receiving unit configured to receive original data transmitted by the transmitting-side device through the OAM channel; analyzing the original data to obtain FEC layer data; and extracting field information in the OAM information according to the FEC layer data to acquire the equipment condition of the sending side equipment.

In one example, a third OAM information receiving unit is configured to process the FEC layer data to obtain PCS layer data; locating an OAM block according to a first alignment mark in the PCS layer data; extracting field information in the OAM block.

In one example, a third OAM information receiving unit is configured to locate an OAM block according to a second alignment identifier in the FEC layer data; extracting field information in the OAM block.

In one example, the apparatus further comprises: a wavelength configuration module configured to configure a first transmission wavelength and a first reception wavelength; a first wavelength information adding module configured to add the first transmission wavelength and the first reception wavelength to first OAM information; a first OAM information transmission module configured to add the first OAM information to a first ethernet frame and transmit the first OAM information to the transmitting side device through the OAM channel; the second Ethernet frame receiving module is arranged to receive a second Ethernet frame fed back by the sending side equipment through the OAM channel; the second OAM information acquisition module is configured to analyze the second Ethernet frame to acquire second OAM information; the wavelength locking identification updating module is configured to update the wavelength locking identification by using the first locking identification under the condition that the wavelength tuning of the transmitting side equipment is successful according to the second OAM information; otherwise, the second locking identifier is adopted to update the wavelength locking identifier, and the operation of configuring the first transmission wavelength and the first receiving wavelength is carried out in a returning mode.

In one example, the apparatus further comprises: a first fault determining module configured to determine that a fault originates from a wireless device in a case where it is determined that the transmitting-side device performs a loopback process and a receiving-side device transmits to the receiving-side device that a receiving link is clear; and the second fault determining module is used for determining that the fault is originated from the wired device under the condition that the sending side device executes loop-back processing and a receiving link from the receiving side device to the receiving side device is not clear.

In one example, the second fault determination module is configured to emit light to the optical multiplexing unit OMU and the optical demultiplexing unit ODU in the moving front by means of an optical time domain reflectometer OTDR; under the condition that the OTDR receives the light of the OMU loop back, determining that the fault is derived from an optical module device; and under the condition that the OTDR does not receive the light of the OMU loop back, determining that the fault is sourced from an optical line.

An embodiment of the present application provides a transmitting side device, fig. 24 is a schematic structural diagram of the transmitting side device provided in the present application, as shown in fig. 24, where the transmitting side device provided in the present application includes: one or more processors 51 and storage 52; the number of the processors 51 of the transmitting device may be one or more, and one processor 51 is taken as an example in fig. 24; the storage device 52 is used for storing one or more programs; the one or more programs are executed by the one or more processors 51, so that the one or more processors 51 implement the OAM information delivery method of mobile forwarding as described in the embodiments of the present application: OAM information is sent to the receiving side equipment through an OAM channel, so that the OAM function of the sending side equipment is realized; the OAM channels are constructed at two ends of the mobile forwarding.

The processor 51, the storage 52 in the transmitting side device may be connected by a bus or other means, for example in fig. 24.

The storage device 52, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, and a module, as described in the embodiments of the present application, corresponding to a program instruction/module of the OAM information delivery method of mobile forwarding (for example, the first information transmitting module 31 in the OAM information delivery device of mobile forwarding). Storage device 52 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functionality; the storage data area may store data created according to the use of the device, etc. In addition, the storage 52 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the storage 52 may further include memory remotely located with respect to the processor 51, which may be connected to the transmitting side device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

An embodiment of the present application provides a receiving side device, fig. 25 is a schematic structural diagram of the receiving side device provided by the present application, and as shown in fig. 25, the receiving side device provided by the present application includes: one or more processors 61 and a storage 62; the processor 61 of the receiving side device may be one or more, and one processor 61 is taken as an example in fig. 25; the storage 62 is used for storing one or more programs; the one or more programs are executed by the one or more processors 61, so that the one or more processors 61 implement the OAM information delivery method of mobile forwarding as described in the embodiments of the present application: OAM information sent by a sending side device is received through an OAM channel, so that an OAM function of the sending side device is realized; the OAM channels are constructed at two ends of the mobile forwarding.

The processor 61, the storage 62 in the receiving-side device may be connected by a bus or other means, in fig. 25 by way of example.

The storage device 62, which is a computer-readable storage medium, may be configured to store a software program, a computer-executable program, and a module, as described in the embodiments of the present application, corresponding to a program instruction/module of the mobile-forwarding OAM information transfer method (for example, the first information receiving module 41 in the mobile-forwarding OAM information transfer device). The storage 62 may include a storage program area that may store an operating system, at least one application program required for functions, and a storage data area; the storage data area may store data created according to the use of the device, etc. In addition, the storage 62 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, the storage 62 may further include memory remotely located with respect to the processor 61, which may be connected to the receiving-side device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The embodiment of the application also provides a storage medium, and the storage medium stores a computer program, and the computer program realizes the OAM information transmission method of mobile forwarding in any one of the embodiments of the application when being executed by a processor.

The OAM information transmission method for mobile forwarding comprises the following steps: OAM information is sent to the receiving side equipment through an OAM channel, so that the OAM function of the sending side equipment is realized; the OAM channels are constructed at two ends of the mobile forwarding.

The OAM information transfer method of mobile forwarding further comprises the following steps: OAM information sent by a sending side device is received through an OAM channel, so that an OAM function of the sending side device is realized; the OAM channels are constructed at two ends of the mobile forwarding.

The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application.

It will be appreciated by those skilled in the art that the term terminal encompasses any suitable type of wireless user equipment, such as a mobile telephone, a portable data processing device, a portable web browser or a car mobile station.

In general, the various embodiments of the application may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. For example, some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device, although the application is not limited thereto.

Embodiments of the present application may be implemented by a data processor of a mobile device executing computer program instructions, e.g. in a processor entity, either in hardware, or in a combination of software and hardware. The computer program instructions may be assembly instructions, instruction set architecture (Instruction Set Architecture, ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages.

The block diagrams of any logic flow in the figures of this application may represent program steps, or may represent interconnected logic circuits, modules, and functions, or may represent a combination of program steps and logic circuits, modules, and functions. The computer program may be stored on a memory. The Memory may be of any type suitable to the local technical environment and may be implemented using any suitable data storage technology, such as, but not limited to, read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), optical Memory devices and systems (digital versatile Disk (Digital Video Disc, DVD) or Compact Disk (CD)), and the like. The computer readable medium may include a non-transitory storage medium. The data processor may be of any type suitable to the local technical environment, such as, but not limited to, general purpose computers, special purpose computers, microprocessors, digital signal processors (Digital Signal Processing, DSPs), application specific integrated circuits (Application Specific Integrated Circuit, ASICs), programmable logic devices (Field-Programmable Gate Array, FGPA), and processors based on a multi-core processor architecture.

Claims

1. The mobile forward OAM information transfer method is applied to the transmitting side equipment and is characterized by comprising the following steps:

OAM information is sent to the receiving side equipment through an operation, administration and maintenance OAM channel; wherein,,

the OAM channel is constructed at two ends of the mobile forwarding;

the OAM channel is constructed on the media access control address (MAC) layers at the two ends of the mobile forwarding;

the sending OAM information to a receiving side device through an OAM channel includes:

processing the Ethernet data to obtain an MAC packet;

OAM packets are inserted into the intervals of the two MAC packets according to a first preset period; wherein, the OAM packet is identified by setting an identification code;

and sending the OAM packet to the receiving side equipment through the OAM channel.

2. The method of claim 1, wherein the set identifier is located at a location of a preamble or a location of a destination address of the OAM packet.

3. The method of claim 1, wherein the OAM channel is built on a process control system PCS layer at both ends of the mobile fronthaul;

processing the Ethernet data to obtain PCS layer data;

inserting an OAM block according to the first alignment mark of the PCS layer data;

And sending the OAM block to the receiving side equipment through the OAM channel.

4. The method of claim 3, wherein inserting the OAM block according to the first alignment identifier of the PCS layer data comprises:

under the condition that the PCS layer data comprises the first alignment mark, inserting the OAM block after the first alignment mark according to a second preset period;

and when the second preset period is a custom period, the OAM block is identified by setting an identification head.

5. The method of claim 3, wherein inserting the OAM block according to the first alignment identifier of the PCS layer data comprises:

under the condition that the PCS layer data does not comprise the first alignment mark, replacing an IDLE state IDLE block between a T block and an S block in the PCS layer data with the OAM block according to a third preset period;

wherein, the OAM block is identified by setting an identification head.

6. The method of claim 5, wherein inserting the OAM block according to the first alignment identifier of the PCS layer data comprises:

and inserting the OAM block between the T block and the S block under the condition that the third preset period is reached and the IDLE block is not included between the T block and the S block.

7. The method according to claim 4 or 6, comprising, after the inserting of the OAM block according to the first alignment identifier of the PCS layer data:

and deleting part of IDLE blocks in the PCS layer data.

8. The method of claim 1, wherein the OAM channel is structured at a forward error correction FEC layer at both ends of the mobile fronthaul;

processing the Ethernet data to obtain FEC layer data;

inserting an OAM block according to the second alignment mark of the FEC layer data;

9. The method of claim 8, wherein inserting the OAM block according to the second alignment indicator of the FEC layer data includes:

processing the FEC layer data to obtain PCS layer data under the condition that the FEC layer data does not comprise the second alignment mark;

processing the PCS layer data according to a preset data processing mode to obtain processed PCS layer data; the preset data processing mode comprises code block synchronization and alignment locking;

inserting the OAM block after a first alignment mark in the processed PCS layer data according to a second preset period;

10. The method of claim 8, wherein inserting the OAM block according to the second alignment indicator of the FEC layer data includes:

inserting the OAM block after the second alignment mark according to a fourth preset period under the condition that the FEC layer data comprises the second alignment mark;

wherein, the OAM block is identified by setting an identification head.

11. The method of claim 10, wherein after inserting the OAM block after the second alignment mark in accordance with a fourth predetermined period, comprising:

and deleting part of IDLE blocks in the PCS layer data under the condition that the PCS layer data corresponding to the FEC layer data are inserted into the second alignment mark.

12. The method according to claim 1, wherein the method further comprises:

receiving a first Ethernet frame sent by the receiving side equipment through the OAM channel;

analyzing the first Ethernet frame to obtain first OAM information;

tuning a second transmission wavelength according to a first reception wavelength included in the first OAM information;

Adding the second transmission wavelength and the second reception wavelength to second OAM information;

and inserting the second OAM information into a second Ethernet frame and feeding back the second OAM information to the receiving side equipment through the OAM channel.

13. The method according to claim 1, wherein the method further comprises:

receiving an Ethernet frame sent by the receiving side equipment through the OAM channel;

analyzing the Ethernet frame to obtain OAM information;

identifying a link loopback switch field in the OAM information;

executing loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a first numerical value;

and canceling loop-back processing under the condition that the field value corresponding to the link loop-back switch field is determined to be a second numerical value.

14. The method according to any one of claims 1-13, wherein the OAM information includes an OAM identification header, a performance field, an alarm field, a wavelength field, and a maintenance function field; wherein,,

the performance field comprises at least one of input optical power, output optical power, laser bias current, module internal temperature, error code statistics and packet error statistics;

the alarm field comprises at least one of an input no light alarm indication, an input weak light alarm indication, an input strong light alarm indication, an output no light alarm indication, an output weak light alarm indication, an output strong light alarm indication, a bias current excessive alarm indication, a module temperature out-of-limit alarm indication, a connection local failure alarm indication, a connection far-end failure alarm indication, a connection failure alarm indication and a synchronization loss alarm indication;

The wavelength field includes at least one of a module transmit wavelength and a module receive wavelength;

the maintenance function field includes at least one of a wavelength lock flag and a link loopback switch.

15. An OAM information transfer method of mobile forwarding, applied to a receiving side device, is characterized by comprising:

the OAM channel is constructed at two ends of the mobile forwarding;

the OAM channel is constructed on FEC layers at two ends of the mobile forwarding;

the receiving, by the OAM channel, OAM information sent by the transmitting side device includes:

receiving original data sent by the sending side equipment through the OAM channel;

analyzing the original data to obtain FEC layer data;

and extracting field information in the OAM information according to the FEC layer data to acquire the equipment condition of the sending side equipment.

16. The method of claim 15, wherein the OAM channel is structured at a MAC layer at both ends of the mobile originated transport;

Analyzing the original data to obtain MAC layer data;

identifying the MAC layer data according to a set identification code to obtain an OAM packet;

extracting field information in the OAM packet to acquire the equipment condition of the sending side equipment.

17. The method of claim 15, wherein the OAM channel is constructed at a PCS layer at both ends of the mobile fronthaul;

analyzing the original data to obtain PCS layer data;

and extracting field information in the OAM information according to the PCS layer data to acquire the equipment condition of the sending side equipment.

18. The method of claim 17, wherein the extracting field information in the OAM information according to the PCS layer data includes:

locating an OAM block according to a first alignment mark in the PCS layer data;

extracting field information in the OAM block.

19. The method of claim 17, wherein the extracting field information in the OAM information according to the PCS layer data includes:

identifying an OAM block from the PCS layer data according to a set identification head;

Extracting field information in the OAM block.

20. The method according to claim 15, wherein the extracting field information in the OAM information according to the FEC layer data includes:

processing the FEC layer data to obtain PCS layer data;

extracting field information in the OAM block.

21. The method of claim 17, wherein the extracting field information in the OAM information according to the PCS layer data includes:

locating an OAM block according to a second alignment mark in the FEC layer data;

extracting field information in the OAM block.

22. The method of claim 15, wherein the method further comprises:

configuring a first transmission wavelength and a first reception wavelength;

adding the first transmission wavelength and the first reception wavelength to first OAM information;

adding the first OAM information to a first Ethernet frame and transmitting the first Ethernet frame to the transmitting side equipment through the OAM channel;

receiving a second Ethernet frame fed back by the sending side equipment through the OAM channel;

analyzing the second Ethernet frame to obtain second OAM information;

Under the condition that the wavelength tuning of the transmitting side equipment is successful according to the second OAM information, updating the wavelength locking identifier by adopting the first locking identifier; otherwise, the second locking identifier is adopted to update the wavelength locking identifier, and the operation of configuring the first transmission wavelength and the first receiving wavelength is carried out in a returning mode.

23. The method of claim 15, wherein the method further comprises:

determining that the fault originates from the wireless device under the condition that the sending side device executes loop-back processing and a receiving side device transmits a receiving link to the receiving side device is clear;

and determining that the fault originates from the wired device under the condition that the sending side device executes loop-back processing and a receiving link from the receiving side device to the receiving side device is not smooth.

24. The method of claim 23, wherein the determining that the fault originated from a wired device comprises:

transmitting light to an optical multiplexing unit OMU and an optical demultiplexing unit ODU in the mobile forwarding through an optical time domain reflectometer OTDR;

under the condition that the OTDR receives the light of the OMU loop back, determining that the fault is derived from an optical module device;

and under the condition that the OTDR does not receive the light of the OMU loop back, determining that the fault is sourced from an optical line.

25. An OAM information delivery apparatus for mobile forwarding, configured in a transmitting side device, comprising:

the OAM channel is constructed at two ends of the mobile forwarding;

the first information sending module includes:

the first OAM information sending unit is used for processing the Ethernet data to obtain an MAC packet;

26. An OAM information delivery apparatus for mobile forwarding, configured in a receiving side device, comprising:

the OAM channel is constructed at two ends of the mobile forwarding;

the first information receiving module includes:

A third OAM information receiving unit, configured to receive, through the OAM channel, original data transmitted by the transmitting side device;

analyzing the original data to obtain FEC layer data;

27. An apparatus, comprising:

one or more processors;

a storage means for storing one or more programs;

the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the mobile-forwarded OAM information delivery method as recited in any one of claims 1-24.

28. A computer storage medium having stored thereon a computer program which when executed by a processor implements the mobile-forwarded OAM information transfer method of any one of claims 1 to 24.