CN117353873B - Uplink frame verification method and device, electronic equipment and storage medium - Google Patents

Uplink frame verification method and device, electronic equipment and storage medium Download PDF

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CN117353873B
CN117353873B CN202311641061.1A CN202311641061A CN117353873B CN 117353873 B CN117353873 B CN 117353873B CN 202311641061 A CN202311641061 A CN 202311641061A CN 117353873 B CN117353873 B CN 117353873B
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onu
uplink frame
current
check value
frame
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CN117353873A (en
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余炳光
谈杰
许明
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Kepu Semiconductor Tianjin Co ltd
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Kepu Semiconductor Tianjin Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q11/00—Selecting arrangements for multiplex systems
    • H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
    • H04Q11/0062—Network aspects

Abstract

The method is applied to an OLT side, after receiving a current uplink frame, whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system is judged, if so, a current BIP check value of the current uplink frame is replaced by a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to a target ONU-ID, and BIP check is finally carried out on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.

Description

Uplink frame verification method and device, electronic equipment and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for checking an uplink frame, an electronic device, and a storage medium.
Background
The GPON network uses optical fiber to connect OLT (Optical Line Terminal ), optical splitter and multiple ONU (Optical Network Unit ), the GPON system uses the principle of wavelength division multiplexing to transmit data on the same optical distribution network by different up and down wavelengths, the OLT transmits data to each ONU by broadcasting in the down direction, and each ONU uploads data by the principle of TDMA (Time Division Multiple Access, time division multiplexing).
In the GPON system, the OLT needs to perform BIP check and judgment on an uplink frame sent by the ONU. For the same ONU, the BIP check value of the first uplink frame sent by the ONU defaults to 0, and the BIP check value of the second uplink frame is calculated according to all transmission bytes covered after the BIP field of the first uplink frame. For the OLT, when a first uplink frame of an ONU-ID is received, a default value of 0 is used as a reference BIP check value to be compared with a BIP check value carried by the first uplink frame to obtain a BIP check result, all transmission bytes covered after the BIP field of the first uplink frame are calculated by the same algorithm to obtain a calculated BIP check value, when a second uplink frame of the ONU-ID is received, the calculated BIP check value is different from or compared with the BIP check value carried by the second uplink frame, if the two values are inconsistent, 1 is generated, and according to the number of 1, the number of error code blocks in transmission of the first uplink frame can be monitored. And by analogy, for the second uplink frame, the third uplink frame and the nth uplink frame which are subsequently transmitted by the same ONU-ID, the OLT performs BIP check according to the mode.
As can be seen from the above, on the ONU side, if an upstream frame is transmitted by the same ONU, the BIP check value directly transmitted by the ONU is obtained by default with the first frame being 0 and the next frame being calculated, and on the OLT side, the reference BIP check value of the first frame of each new ONU-ID is obtained by default with 0 and the next frame is obtained by calculation, regardless of whether the ONU-IDs are the same. For ONUs where the ONU-ID remains unchanged all the time, this mechanism does not present a problem. However, if a certain ONU is a newly added ONU in the GPON system, the ONU sequentially sends an uplink discovery frame and an uplink ranging frame to the OLT, where the uplink discovery frame is sent before the ONU is not allocated with an ONU-ID, the value of the ONU-ID field defaults to 255, and the uplink ranging frame is sent after the ONU is allocated with a new ONU-ID, and the value of the ONU-ID field is other than 255. At this time, on the ONU side, the BIP check value of the uplink ranging frame sent by the ONU side is calculated according to the uplink discovery frame, the value is not 0, and on the OLT side, the uplink ranging frame is the first frame corresponding to the newly allocated ONU-ID, and then the BIP check is performed with the BIP check value carried by the uplink ranging frame by using 0 as the reference BIP check value, and the inconsistency between the sending end and the receiving end may cause the BIP check error of the uplink ranging frame.
Disclosure of Invention
The embodiment of the application provides a method, a device, electronic equipment and a storage medium for checking an uplink frame, which are used for solving the technical problem that BIP check errors occur in an uplink ranging frame of a newly added ONU.
In order to solve the technical problems, the embodiment of the application provides the following technical scheme:
the application provides a method for checking an uplink frame, which comprises the following steps:
receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the distribution of a target ONU-ID;
if yes, replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
and performing BIP check on the target uplink frame.
In one embodiment, the step of determining whether the current uplink frame is an uplink ranging frame sent by a newly added ONU includes:
judging whether the current uplink frame is received in a windowing stage;
if yes, judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID;
If yes, determining the current uplink frame as an uplink ranging frame sent by the newly added ONU.
In one embodiment, before the step of determining whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID, the method further includes:
acquiring a current ONU-ID from the current uplink frame;
acquiring an ONU-ID allocation record;
comparing the current ONU-ID with the ONU-ID allocation record, and determining the ONU which transmits the current uplink frame as a newly added ONU when the comparison result indicates that the current ONU-ID is consistent with the ONU-ID allocation record.
In one embodiment, the step of replacing the current BIP check value with a preset BIP check value includes:
acquiring a preset BIP check value from a register unit of the OLT;
and filling the preset BIP check value into the BIP domain of the current uplink frame.
In one embodiment, the step of performing BIP verification on the target uplink frame includes:
acquiring the preset BIP check value from the target uplink frame;
and comparing the preset BIP check value with the reference BIP check value, and obtaining a BIP check result of the target uplink frame according to a comparison result.
In one embodiment, after the step of determining whether the current uplink frame is an uplink ranging frame sent by the newly added ONU, the method further includes:
If not, acquiring the current BIP check value from the current uplink frame, and acquiring a calculated BIP check value of a previous uplink frame, wherein the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame;
and comparing the calculated BIP check value with the current BIP check value, and obtaining a BIP check result of the previous uplink frame according to a comparison result.
In one embodiment, after the step of obtaining the BIP verification result, the method further comprises:
and counting each BIP verification result.
Meanwhile, the embodiment of the application also provides a device for checking the uplink frame, which comprises:
the receiving module is used for receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
the judging module is used for judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the allocation of a target ONU-ID;
the replacing module is used for replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, and the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
And the verification module is used for carrying out BIP verification on the target uplink frame.
The application also provides an electronic device comprising a memory and a processor; the memory stores an application program, and the processor is configured to run the application program in the memory, so as to execute the steps in the method for checking an uplink frame according to any one of the above steps.
The embodiment of the application provides a computer readable storage medium, wherein the computer readable storage medium stores a plurality of instructions, and the instructions are suitable for being loaded by a processor to execute the steps in the uplink frame verification method.
The beneficial effects are that: the method is applied to an OLT side, after receiving a current uplink frame, whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system is judged, the uplink ranging frame is a first uplink frame sent by the newly added ONU after being allocated with a target ONU-ID, if so, a current BIP check value of the current uplink frame is replaced with a preset BIP check value to obtain the target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of the first uplink frame corresponding to the target ONU-ID, and BIP check is finally carried out on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.
Drawings
Technical solutions and other advantageous effects of the present application will be made apparent from the following detailed description of specific embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic view of a scenario of an uplink frame verification method provided in an embodiment of the present application.
Fig. 2 is a schematic diagram of a processing flow of an uplink frame in an OLT in an embodiment of the present application.
Fig. 3 is a schematic structural diagram of an uplink frame in an embodiment of the present application.
Fig. 4 is a first flowchart of a method for checking an uplink frame according to an embodiment of the present application.
Fig. 5 is a schematic diagram of a message of an uplink discovery frame and an uplink ranging frame when calibration is not performed in the prior art.
Fig. 6 is a schematic message diagram of an uplink discovery frame and an uplink ranging frame after calibration in an embodiment of the present application.
Fig. 7 is a second flowchart of a method for checking an uplink frame according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of an uplink frame verification device according to an embodiment of the present application.
Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1, fig. 1 is a schematic view of a scenario in which an uplink frame verification method provided in an embodiment of the present application is applied, where the scenario includes a GPON system, and the GPON system includes an OLT (Optical Line Terminal ) and a plurality of ONUs (Optical Network Unit, optical network units), where the OLT is a device connected to an optical fiber trunk line, and the ONUs are user-side devices, are connected to a computer or a server, provide services of network communication, and the OLT and the ONUs are connected to each other through an ODN (Optical Distribution Network, passive optical network) to perform communication. The OLT and each ONU transmit uplink and downlink by adopting different wavelengths during communication, and the downlink transmits data in a broadcasting mode, namely all data are broadcasted from the OLT to all the ONUs, each ONU selectively receives the data belonging to the ONU and discards other data; the uplink transmits data through the principle of TDMA (Time Division Multiple Access, time division multiplexing), that is, each ONU transmits data to the OLT only in the time slot that the OLT grants in advance, and the time slots of the ONUs do not overlap, so as to avoid uplink data collision.
As shown in fig. 2, after the OLT receives an upstream frame sent by the ONU, photoelectric conversion is performed first to obtain a serial electrical signal, then the Serdes module converts the serial electrical signal into a parallel electrical signal, and then the parallel electrical signal is transmitted to the Delimiter module and the desteamer module to be split, and then BIP verification is performed and statistics is performed on the verification result, and after the BIP verification is passed, subsequent processing is performed on the data.
The structure of the parallel electric signal obtained in the above process is shown in fig. 3, and includes a PLOu domain, a plomu domain, a PLSu domain, a DBRu domain and a Payload domain, specifically, the PLOu domain is overhead of an uplink physical layer, and is mainly used for frame positioning, synchronization and data indicating which ONU the frame is; the PLOAmu domain is used for carrying PLOAM messages of uplink frames; the PLSA domain is used for carrying a power level sequence of an uplink frame; the DBRu domain is used for carrying the state of the T-CONT, and for applying bandwidth for the next time, dynamic bandwidth allocation of the ONU is completed; the Payload field is the data Payload. The PLou domain further comprises a preamble domain, a relimiter domain, a BIP domain, an ONU-ID domain and an Ind domain, wherein the preamble domain carries a preamble of A bits, the relimiter domain carries a delimiter of B bits, the BIP domain carries a BIP check value of 1 bit, the ONU-ID domain carries an ONU-ID of 1 bit, and the Ind domain carries indication data of 1 bit. In the above structure, the ONU-ID refers to a unique identifier of an ONU transmitting an upstream frame in a GPON system, and the BIP check value refers to a bit interleaved parity check value carried by the upstream frame. In the GPON system, the OLT needs to perform BIP check and judgment on each uplink frame sent by the ONU.
Specifically, for the same ONU, the BIP check value of the 1 st uplink frame sent by the ONU defaults to 0, that is, the value carried in the BIP field of the 1 st uplink frame is 0. For the i-th uplink frame (i is an integer greater than 1) sent by the device, according to all transmission bytes (including ONU-ID domain, ind domain, PLOAmu domain, PLSL domain, DBRu domain and Payload domain, if FEC check bit is present, FEC check bit is not included) covered after the BIP domain (excluding the BIP domain) of the i-1-th uplink frame, the value is usually not 0.
For the OLT, when receiving a certain uplink frame, if the uplink frame is the 1 st uplink frame of a certain ONU-ID, since the uplink frame is the first frame, the 0 will be used as the reference BIP check value by default to compare with the BIP check value carried by the 1 st uplink frame, so as to obtain a BIP check result, and if the carried BIP check value is 0, the BIP check can pass. Meanwhile, the OLT calculates all transmission bytes (including ONU-ID field, ind field, plomu field, PLSu field, DBRu field and Payload field) covered by the BIP field of the 1 st upstream frame by using a BIP check algorithm to obtain a calculated BIP check value and store the calculated BIP check value, when the 2 nd upstream frame corresponding to the same ONU-ID is received, the calculated BIP check value is different from or compared with the BIP check value carried by the 2 nd upstream frame, if the two values are inconsistent, 1 is generated by exclusive or, and according to how many 1 s appear, how many error code blocks appear in the 1 st upstream frame in transmission can be monitored. And by analogy, for the 2 nd uplink frame, the 3 rd uplink frame and the N th uplink frame which are subsequently transmitted by the same ONU-ID, the OLT performs BIP check according to the mode.
For an ONU which is already added into the GPON system, the ONU-ID is always the same, and according to the mechanism, the BIP check value provided by the ONU and the BIP check value provided by the OLT can be calculated by adopting the same default value or the same BIP check algorithm, and the BIP check result obtained after comparing the two check values can normally reflect the error condition of each uplink frame.
However, there may be new ONUs to join the GPON system every interval, where the new ONUs need to send an upstream discovery frame to the OLT when they are not assigned with ONU-IDs, so that the OLT discovers the ONUs, at this time, the OLT does not assign ONU-IDs to the ONUs yet, and the ONU-ID field value of the upstream discovery frame defaults to 255, and because the frame is the first frame sent by the ONU, the BIP field value of the upstream discovery frame defaults to 0, that is, the BIP check value is 0. When the OLT discovers the ONU, a new ONU-ID (the value is not 255) is allocated to the ONU, and meanwhile, the ONU needs to perform ranging on the ONU, and then the ONU needs to send an uplink ranging frame to the OLT, where, because the uplink ranging frame is the 2 nd frame sent by the ONU, the value of the BIP domain of the uplink ranging frame is calculated according to the BIP domain of the 1 st frame (uplink discovery frame) and then all the transmission bytes covered by the BIP domain are calculated by using a BIP checking algorithm, and the value is usually not 0.
On the OLT side, after receiving the upstream discovery frame, it may determine that the frame is the 1 st upstream frame corresponding to the ONU-ID according to the ONU-ID (255) carried by the upstream discovery frame, and default uses 0 as a reference BIP check value to perform BIP check with the BIP check value carried by the upstream discovery frame, where since both are 0, no error occurs in the BIP check. When the frame receives the uplink ranging frame, the frame can be judged to be the 1 st uplink frame corresponding to the ONU-ID according to the ONU-ID (not 255) carried by the uplink ranging frame, then 0 is used as a reference BIP check value by default to carry out BIP check with the BIP check value carried by the uplink ranging frame, at the moment, the values of the two are inevitably unequal, and the compared BIP check result cannot normally reflect the error condition of the uplink ranging frame, so that BIP check errors are caused.
Based on the foregoing, the embodiments of the present application provide a method, an apparatus, an electronic device, and a storage medium for checking an uplink frame, so as to solve the technical problem that a BIP check error occurs in an uplink ranging frame newly added to an ONU due to a change of an ONU-ID.
Referring to fig. 4, fig. 4 is a first flowchart of a method for checking an uplink frame according to an embodiment of the present application, where the method specifically includes:
s1: and receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value.
The method for checking the uplink frame provided in the embodiment of the present application is applied to the OLT side, each ONU in the GPON system sends the uplink frame to the OLT in a burst manner, a currently received uplink frame of the OLT is referred to as a current uplink frame, the structure of the current uplink frame is shown in fig. 3, the BIP field of the current uplink frame carries a BIP check value, a specific value of the BIP check value is determined by the ONU sending the current uplink frame, when the specific value is the 1 st uplink frame sent by the ONU, the BIP check value defaults to 0, and when the specific value is the i uplink frame (i is an integer greater than 1) sent by the ONU, the BIP check value is calculated by using a BIP check algorithm according to all transmission bytes (including ONU-ID field, ind field, oamu field, pls field, DBRu field and payoad field) covered after the BIP field (i is an integer greater than 1).
S2: and judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in the GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the allocation of the target ONU-ID.
After receiving the current uplink frame, the OLT first determines whether the current uplink frame is an uplink ranging frame sent by a newly added ONU, where the newly added ONU may send more than one uplink frame after allocating the target ONU-ID, but only the first uplink frame sent after allocating the target ONU-ID is the uplink ranging frame.
In one embodiment, S2 specifically includes:
s21: and judging whether the current uplink frame is received in a windowing stage.
S22: if yes, judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID.
S23: if yes, determining the current uplink frame as the uplink ranging frame sent by the newly added ONU.
When a new ONU needs to join the GPON system, the specific activation flow of the newly joining OLT is as follows:
the new ONU receives the working parameters sent by the OLT through the upstream_overheads message, and adjusts its own parameters (such as sending optical power) through the received working parameters.
Entering an SN windowing stage, discovering the Serial number of the newly added ONU by the OLT through a serial_ Number Acquisition flow, and distributing ONU-ID to the newly added ONU; specifically, the OLT first sends a downstream discovery request, the newly-added ONU responds to the request, and sends an upstream discovery frame to the OLT to inform the OLT of its own sequence number, and after the OLT obtains the sequence number, the OLT assigns an ONU-ID to the newly-added ONU.
And entering a ranging stage, sending an uplink ranging frame to the OLT by the newly-added ONU, calculating the equalization time delay of the newly-added ONU according to the uplink ranging frame by the OLT, sending the equalization time delay to the newly-added ONU, and adjusting the sending starting point of the uplink frame by the newly-added ONU according to the equalization time delay.
According to the above flow, when a new ONU needs to be added, SN needs to be windowed first, and after OLT allocates ONU-ID to ONU, ranging frame is generated, if it is determined whether it is ranging frame, it needs to determine whether current uplink frame is received in windowed stage first, if it is not, it is not ranging frame; if so, it is also necessary to determine whether it is the first uplink frame sent by the target ONU-ID, if both are satisfied, it is determined that the current uplink frame is an uplink ranging frame sent by the newly added ONU, otherwise, it is not a ranging frame.
In one embodiment, before determining whether the current upstream frame is the first upstream frame corresponding to the target ONU-ID, the method further includes:
s21a: and acquiring the current ONU-ID from the current uplink frame.
S21b: and acquiring an ONU-ID allocation record.
S21c: comparing the current ONU-ID with the ONU-ID allocation record, and determining the ONU which transmits the current uplink frame as a newly added ONU when the comparison result represents that the current ONU-ID is consistent with the ONU-ID allocation record.
According to the activation flow, the target ONU-ID needs to be allocated to the newly added ONU in the SN windowing stage. After the ONU-ID is allocated, the newly added ONU transmits an uplink ranging frame and then enters a subsequent judging flow. When there is more than one newly added ONU, the OLT assigns different ONUs with different values of the target ONU-ID, and each is different from the value 255 when no ONU-ID is set.
When distributing target ONU-ID to newly added ONU, the OLT locally stores ONU-ID distribution record, after receiving the current uplink frame, the OLT firstly acquires the current ONU-ID from the ONU-ID domain in the current uplink frame, then compares the current ONU-ID with the ONU-ID distribution record, and if the comparison result indicates that the current ONU-ID is consistent with the ONU-ID distribution record, the ONU which sends the current uplink frame can be determined to be the newly added ONU which is distributed with the target ONU-ID before. Through the process, the correctness verification of the identity of the newly added ONU can be performed, so that the accuracy of subsequent judgment is improved.
S3: if yes, replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID.
On the OLT side, a reference BIP check value is set for the first upstream frame corresponding to each ONU-ID, and in general, the reference BIP check values of these ONU-IDs are all 0.
If the current uplink frame is judged to be the uplink ranging frame of the newly added ONU, the BIP check is carried out directly and is certainly wrong because the current BIP check value carried by the uplink ranging frame is inconsistent with the reference BIP check value provided by the OLT side. At this time, the current BIP check value of the current uplink frame needs to be replaced by a preset BIP check value, and the value of the preset BIP check value is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, that is, 0. The replaced current uplink frame is called a target uplink frame.
It should be noted that, in the above embodiment, the reference BIP check value of each ONU-ID is preferably 0, but the application is not limited thereto, and a person skilled in the art may set different reference BIP check values for different ONU-IDs according to actual needs, and the reference BIP check value may not be 0, but it is required to ensure that the first reference BIP check value corresponding to the same ONU-ID is not equal to the BIP check value calculated by other subsequent uplink frames of the ONU-ID. That is, a person skilled in the art can flexibly set the reference BIP check value of each ONU-ID as required, and all schemes capable of meeting the post-replacement BIP check requirement fall into the protection scope of the present application.
In one embodiment, S3 specifically includes:
S31: acquiring a preset BIP check value from a register unit of the OLT;
s32: and filling the preset BIP check value into the BIP domain of the current uplink frame.
The uplink frame verification method provided by the embodiment of the application is completed by the gpon OLT integrated circuit on the OLT side, and the circuit comprises a storage array and a plurality of register units, wherein the storage array comprises a plurality of storage units. The storage array is used for storing the received current uplink frame, and the register unit is used for storing ONU-ID, frame head, frame tail, preset BIP check value, counting BIP check results and the like. The storage information of the storage array corresponds to the information stored by the plurality of register units, and the storage information is required to meet the content and information specified by the standard protocol of the GPON system. When the check is needed, the preset BIP check value can be directly obtained from the register unit and filled into the BIP domain of the current uplink frame, and filling is not needed to be performed after each new generation, so that the process is simple and quick, and errors are not easy to occur.
In one embodiment, after S3, further comprising:
s4: and acquiring a preset BIP check value from the target uplink frame.
S5: and comparing the preset BIP check value with the reference BIP check value, and obtaining a BIP check result of the target uplink frame according to the comparison result.
After calibration, the BIP check value of the target uplink frame is a preset BIP check value, and the BIP check value is compared with the reference BIP check value provided by the OLT, so that the BIP check result of the target uplink frame can be obtained, and the comparison result is consistent because the values of the BIP check value and the reference BIP check value are equal, and the obtained BIP check result cannot be wrong.
Specifically, referring to fig. 5 and fig. 6, fig. 5 shows a message of an uplink discovery frame and an uplink ranging frame of an ONU newly added when calibration is not performed in the prior art, and fig. 6 shows a message of an uplink discovery frame and an uplink ranging frame after calibration in the embodiment of the present application. Comparing the two, when the calibration is not performed, the BIP check value carried by the BIP domain of the uplink ranging frame is 2e, and is unequal to the reference BIP check value 0, so that BIP check errors are caused. After calibration, the BIP check value of the BIP domain of the last ranging frame is '0', which is equal to the reference BIP check value '0', so that BIP check errors are not caused.
In one embodiment, after S2, further comprising:
s6: if not, the current BIP check value is obtained from the current uplink frame, the calculated BIP check value of the previous uplink frame is obtained, the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame.
S7: and comparing and calculating the BIP check value with the current BIP check value, and obtaining the BIP check result of the previous uplink frame according to the comparison result.
If the current uplink frame is not the uplink ranging frame of the newly added ONU after judgment, the uplink frame is sent according to the normal uplink frame, calibration is not needed, the steps from S6 to S7 can be directly executed, the BIP check value is calculated according to all transmission bytes covered after the BIP field of the previous uplink frame sent by the same ONU, then the calculated BIP check value is compared with the current BIP check value, if the comparison result is consistent with the calculated BIP check value, the BIP check result of the previous uplink frame is correct, the error code does not appear in the transmission process, and if the comparison result is inconsistent with the calculated BIP check value, the BIP check result of the previous uplink frame is wrong, and the error code appears in the transmission process. In addition, if the current uplink frame is an uplink discovery frame of the newly added ONU, the BIP check is performed using 0 as a reference check value and a BIP check value carried by the current uplink frame.
It should be noted that, the schemes of the steps S3 to S5 and the schemes of the steps S6 to S7 are parallel schemes, and the two schemes are not sequentially separated, and in an actual scene, which scheme is adopted is selected according to the judgment result of S2. Specifically, as shown in fig. 7, after the OLT receives the current uplink frame sent by the ONU, it determines whether it is an uplink ranging frame of the newly added ONU. If yes, filling the preset BIP check value into the uplink ranging frame of the newly added ONU, and then carrying out BIP check. If not, the current uplink frame is sent up according to the normal uplink frame, and BIP verification is carried out.
In one embodiment, after S5 or S7, further comprising:
s8: and counting each BIP verification result.
In the prior art, the statistics may include BIP checking errors of the uplink ranging frame, and the statistics may be inaccurate. After the method in the embodiment of the application is adopted, the statistical result only counts the situation that the error code actually occurs in the sending process of the uplink frame, but does not count the BIP checking error of the uplink ranging frame caused by the allocation of the target ONU-ID, so that the BIP checking statistical calibration is realized, and the accuracy of the statistical result is improved.
According to the embodiment, after the current uplink frame is received, whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system is judged, the uplink ranging frame is a first uplink frame sent by the newly added ONU after the target ONU-ID is allocated, if so, the current BIP check value of the current uplink frame is replaced by a preset BIP check value, a target uplink frame is obtained, wherein the preset BIP check value is equal to the reference BIP check value of the first uplink frame corresponding to the target ONU-ID, and BIP check is finally carried out on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.
On the basis of the method described in the above embodiment, this embodiment will be further described from the point of view of a verification device for an upstream frame, where the verification device is located on the OLT side. Referring to fig. 8, the uplink frame checking apparatus may include:
a receiving module 10, configured to receive a current uplink frame, where the current uplink frame includes a current BIP check value;
the judging module 20 is configured to judge whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in the GPON system, where the uplink ranging frame is a first uplink frame sent by the newly added ONU after the new ONU allocates a target ONU-ID;
a replacing module 30, configured to replace, if yes, the current BIP check value with a preset BIP check value, to obtain a target uplink frame, where the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
and a checking module 40, configured to perform BIP checking on the target uplink frame.
In one embodiment, the determining module 20 includes:
a first judging sub-module, configured to judge whether the current uplink frame is received after SN windowing;
the second judging submodule is used for judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID if yes;
And the first determining submodule is used for determining the current uplink frame as an uplink ranging frame sent by the newly added ONU if the current uplink frame is the uplink ranging frame.
In one embodiment, before the second judging sub-module, the method further includes:
a first obtaining sub-module, configured to obtain a current ONU-ID from the current uplink frame;
the second acquisition submodule is used for acquiring the ONU-ID allocation record;
and the first comparison sub-module is used for comparing the current ONU-ID with the ONU-ID allocation record, and determining the ONU which transmits the current uplink frame as a newly added ONU when the comparison result represents that the current ONU-ID is consistent with the ONU-ID allocation record.
In one embodiment, the replacement module 30 includes:
a third obtaining sub-module, configured to obtain a preset BIP check value from a register unit of the OLT;
and the filling sub-module is used for filling the preset BIP check value into the BIP domain of the current uplink frame.
In one embodiment, the verification module 40 includes:
a fourth obtaining sub-module, configured to obtain the preset BIP check value from the target uplink frame;
and the second comparison sub-module is used for comparing the preset BIP check value with the reference BIP check value and obtaining the BIP check result of the target uplink frame according to the comparison result.
In one embodiment, the device for checking an uplink frame further includes:
the acquisition module is used for acquiring the current BIP check value from the current uplink frame and acquiring a calculated BIP check value of a previous uplink frame if not, wherein the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame;
and the comparison module is used for comparing the calculated BIP check value with the current BIP check value and obtaining the BIP check result of the previous uplink frame according to the comparison result.
In one embodiment, the device for checking an uplink frame further includes:
and the statistics module is used for counting each BIP verification result.
In contrast to the prior art, after receiving the current uplink frame, the uplink frame checking device provided by the application judges whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is a first uplink frame sent by the newly added ONU after the allocation of the target ONU-ID, if so, the current BIP check value of the current uplink frame is replaced with a preset BIP check value to obtain the target uplink frame, wherein the preset BIP check value is equal to the reference BIP check value of the first uplink frame corresponding to the target ONU-ID, and finally the BIP check is performed on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.
Accordingly, the embodiment of the present application further provides an electronic device, as shown in fig. 9, where the electronic device may include a Radio Frequency (RF) circuit 101, a memory 102 including one or more computer readable storage media, an input unit 103, a display unit 104, a sensor 105, an audio circuit 106, a WiFi module 107, a processor 108 including one or more processing cores, and a power supply 109. It will be appreciated by those skilled in the art that the electronic device structure shown in fig. 9 is not limiting of the electronic device and may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. Wherein:
the radio frequency circuit 101 may be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, in particular, after receiving downlink information of the base station, the downlink information is processed by one or more processors 108; in addition, data relating to uplink is transmitted to the base station. The memory 102 may be used to store software programs and modules, and the processor 108 may perform various functional applications and verification of upstream frames by running the software programs and modules stored in the memory 102. The input unit 103 may be used to receive entered numeric or character information and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to customer settings and function control.
The display unit 104 may be used to display information entered by a client or provided to a client and various graphical client interfaces of a server, which may be composed of graphics, text, icons, video, and any combination thereof.
The electronic device may also include at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Audio circuitry 106 includes speakers that may provide an audio interface between the client and the electronic device.
WiFi belongs to a short-distance wireless transmission technology, and the electronic equipment can help clients to send and receive emails, browse webpages, follow-up streaming media and the like through the WiFi module 107, so that wireless broadband Internet follow-up is provided for the clients. Although fig. 9 shows the WiFi module 107, it is understood that it does not belong to the necessary constitution of the electronic device, and can be omitted entirely as required within a range that does not change the essence of the application.
The processor 108 is a control center of the electronic device that uses various interfaces and lines to connect the various parts of the overall handset, performing various functions of the electronic device and processing the data by running or executing software programs and/or modules stored in the memory 102, and invoking data stored in the memory 102, thereby performing overall monitoring of the handset.
The electronic device further comprises a power supply 109 (e.g. a battery) for powering the components, which may preferably be logically connected to the processor 108 via a power management system, whereby the functions of managing charging, discharging, and power consumption are performed by the power management system.
Although not shown, the electronic device may further include a camera, a bluetooth module, etc., which will not be described herein. Specifically, in this embodiment, the processor 108 in the server loads executable files corresponding to the processes of one or more application programs into the memory 102 according to the following instructions, and the processor 108 executes the application programs stored in the memory 102, so as to implement the following functions:
receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the distribution of a target ONU-ID;
if yes, replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
And performing BIP check on the target uplink frame.
In one embodiment, the functions are implemented:
judging whether the current uplink frame is received after SN windowing;
if yes, judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID;
if yes, determining the current uplink frame as an uplink ranging frame sent by the newly added ONU.
In one embodiment, the functions are implemented:
acquiring a current ONU-ID from the current uplink frame;
acquiring an ONU-ID allocation record;
comparing the current ONU-ID with the ONU-ID allocation record, and determining the ONU which transmits the current uplink frame as a newly added ONU when the comparison result indicates that the current ONU-ID is consistent with the ONU-ID allocation record.
In one embodiment, the functions are implemented:
acquiring a preset BIP check value from a register unit of the OLT;
and filling the preset BIP check value into the BIP domain of the current uplink frame.
In one embodiment, the functions are implemented:
acquiring the preset BIP check value from the target uplink frame;
and comparing the preset BIP check value with the reference BIP check value, and obtaining a BIP check result of the target uplink frame according to a comparison result.
In one embodiment, the functions are implemented:
If not, acquiring the current BIP check value from the current uplink frame, and acquiring a calculated BIP check value of a previous uplink frame, wherein the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame;
and comparing the calculated BIP check value with the current BIP check value, and obtaining a BIP check result of the previous uplink frame according to a comparison result.
In one embodiment, the functions are implemented:
and counting each BIP verification result.
After receiving a current uplink frame, the electronic device provided by the application judges whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is a first uplink frame sent by the newly added ONU after the allocation of a target ONU-ID, if so, the current BIP check value of the current uplink frame is replaced by a preset BIP check value to obtain the target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of the first uplink frame corresponding to the target ONU-ID, and finally, BIP check is carried out on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.
In the foregoing embodiments, the descriptions of the embodiments are focused on, and the portions of a certain embodiment that are not described in detail may be referred to the foregoing detailed description, which is not repeated herein.
Those of ordinary skill in the art will appreciate that all or a portion of the steps of the various methods of the above embodiments may be performed by instructions, or by instructions controlling associated hardware, which may be stored in a computer-readable storage medium and loaded and executed by a processor.
To this end, embodiments of the present application provide a computer readable storage medium having stored therein a plurality of instructions capable of being loaded by a processor to perform the following functions:
receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the distribution of a target ONU-ID;
if yes, replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
And performing BIP check on the target uplink frame.
In one embodiment, the functions are implemented:
judging whether the current uplink frame is received after SN windowing;
if yes, judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID;
if yes, determining the current uplink frame as an uplink ranging frame sent by the newly added ONU.
In one embodiment, the functions are implemented:
acquiring a current ONU-ID from the current uplink frame;
acquiring an ONU-ID allocation record;
comparing the current ONU-ID with the ONU-ID allocation record, and determining the ONU which transmits the current uplink frame as a newly added ONU when the comparison result indicates that the current ONU-ID is consistent with the ONU-ID allocation record.
In one embodiment, the functions are implemented:
acquiring a preset BIP check value from a register unit of the OLT;
and filling the preset BIP check value into the BIP domain of the current uplink frame.
In one embodiment, the functions are implemented:
acquiring the preset BIP check value from the target uplink frame;
and comparing the preset BIP check value with the reference BIP check value, and obtaining a BIP check result of the target uplink frame according to a comparison result.
In one embodiment, the functions are implemented:
If not, acquiring the current BIP check value from the current uplink frame, and acquiring a calculated BIP check value of a previous uplink frame, wherein the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame;
and comparing the calculated BIP check value with the current BIP check value, and obtaining a BIP check result of the previous uplink frame according to a comparison result.
In one embodiment, the functions are implemented:
and counting each BIP verification result.
After receiving a current uplink frame, the computer readable storage medium provided by the application judges whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is a first uplink frame sent by the newly added ONU after the allocation of a target ONU-ID, if so, the current BIP check value of the current uplink frame is replaced by a preset BIP check value to obtain the target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of the first uplink frame corresponding to the target ONU-ID, and finally, BIP check is carried out on the target uplink frame. By the method, since the preset BIP check value carried by the target uplink frame is equal to the reference BIP check value provided by the OLT side for the target ONU-ID, when BIP check is carried out on the target uplink frame and the reference BIP check value, the check result is correct, so that calibration of the check result is realized, and the technical problem of BIP check errors of the current newly added ONU uplink ranging frame is solved.
The foregoing describes in detail a method, an apparatus, an electronic device, and a computer readable storage medium for checking an uplink frame provided in the embodiments of the present application, where specific examples are applied to illustrate principles and implementations of the present application, and the descriptions of the foregoing embodiments are only used to help understand the technical solutions and core ideas of the present application; those of ordinary skill in the art will appreciate that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims (8)

1. A method for checking an uplink frame, comprising:
receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the distribution of a target ONU-ID; comprising the following steps: judging whether the current uplink frame is received after SN windowing; if so, acquiring a current ONU-ID from the current uplink frame, acquiring an ONU-ID allocation record, comparing the current ONU-ID with the ONU-ID allocation record, determining that the ONU sending the current uplink frame is a newly added ONU when the comparison result represents that the current ONU-ID is consistent with the ONU-ID allocation record, and judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID; if yes, determining the current uplink frame as an uplink ranging frame sent by the newly added ONU;
If yes, replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, wherein the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
and performing BIP check on the target uplink frame.
2. The method according to claim 1, wherein the step of replacing the current BIP check value with a preset BIP check value comprises:
acquiring a preset BIP check value from a register unit of the OLT;
and filling the preset BIP check value into the BIP domain of the current uplink frame.
3. The method for checking an uplink frame according to claim 1, wherein the step of performing BIP checking on the target uplink frame comprises:
acquiring the preset BIP check value from the target uplink frame;
and comparing the preset BIP check value with the reference BIP check value, and obtaining a BIP check result of the target uplink frame according to a comparison result.
4. The method according to claim 1, further comprising, after the step of determining whether the current uplink frame is an uplink ranging frame transmitted by a newly added ONU:
if not, acquiring the current BIP check value from the current uplink frame, and acquiring a calculated BIP check value of a previous uplink frame, wherein the previous uplink frame and the current uplink frame are sequentially transmitted by the same ONU, and the calculated BIP check value is obtained by performing BIP check calculation on the previous uplink frame;
And comparing the calculated BIP check value with the current BIP check value, and obtaining a BIP check result of the previous uplink frame according to a comparison result.
5. The method for checking an uplink frame according to claim 3 or 4, further comprising, after the step of obtaining a BIP check result:
and counting each BIP verification result.
6. An uplink frame checking apparatus, wherein the checking apparatus includes:
the receiving module is used for receiving a current uplink frame, wherein the current uplink frame comprises a current BIP check value;
the judging module is used for judging whether the current uplink frame is an uplink ranging frame sent by a newly added ONU in a GPON system, wherein the uplink ranging frame is the first uplink frame sent by the newly added ONU after the allocation of a target ONU-ID; comprising the following steps: judging whether the current uplink frame is received after SN windowing; if so, acquiring a current ONU-ID from the current uplink frame, acquiring an ONU-ID allocation record, comparing the current ONU-ID with the ONU-ID allocation record, determining that the ONU sending the current uplink frame is a newly added ONU when the comparison result represents that the current ONU-ID is consistent with the ONU-ID allocation record, and judging whether the current uplink frame is the first uplink frame corresponding to the target ONU-ID; if yes, determining the current uplink frame as an uplink ranging frame sent by the newly added ONU;
The replacing module is used for replacing the current BIP check value with a preset BIP check value to obtain a target uplink frame, and the preset BIP check value is equal to a reference BIP check value of a first uplink frame corresponding to the target ONU-ID;
and the verification module is used for carrying out BIP verification on the target uplink frame.
7. An electronic device comprising a memory and a processor; the memory stores an application program, and the processor is configured to run the application program in the memory to perform the steps in the method for checking an uplink frame according to any one of claims 1 to 5.
8. A computer readable storage medium, characterized in that the computer readable storage medium has stored thereon a computer program which is executed by a processor to implement the steps in the method of checking an upstream frame according to any of claims 1 to 5.
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