CN116055926A - Sampling method, device, equipment and storage medium for GPON uplink burst transmission data - Google Patents
Sampling method, device, equipment and storage medium for GPON uplink burst transmission data Download PDFInfo
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Abstract
The application belongs to the technical field of communication, and discloses a sampling method, a device, equipment and a storage medium for GPON uplink burst transmission data, wherein the method comprises the following steps: receiving a preamble of burst transmission data, and selecting five sampling points in the preambles of two adjacent unit time intervals; respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, and determining two sampling points adjacent to a jump edge of a preamble; configuring a phase interpolator of the CDR until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge; if two sampling points adjacent to the jump edge of the preamble are both positioned at one side of the jump edge, selecting the two sampling points with the largest window margin, and marking the two sampling points as output sampling points; and sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data. The method solves the technical problem that the traditional technical scheme cannot finish the phase locking of recovered data in a specified time aiming at the symmetric GPON technology of 2.488Gbps uplink and 2.488Gbps downlink.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for sampling GPON uplink burst transmission data.
Background
In GPON (Gigabit-Capable PON) technology, burst interruption and burst transmission are performed on uplink data sent by an opposite device, so that CDR (clock data recovery ) at a receiving end is required to be able to stably complete phase locking of recovered data within a specified time, so as to sample subsequent data.
The traditional technical scheme is that a 4-time oversampling scheme based on FPGA (field programmable gate array) is adopted to realize phase locking within a specified time, for example, the sampling scheme is used for selecting the serdes with the rate of 6.6 Gbps, the 4-time frequency with the uplink rate of 1.244Gbps is used, the sampling position of uplink data is obtained through a 4-time oversampling method, and the phase drift of the sampling position is tracked.
However, the conventional technical scheme is limited by the highest frequency of the serdes module, and can only be applied to the GPON technology with the uplink rate of 1.244Gbps and the downlink rate of 2.488Gbps, and for the symmetric GPON technology with both the uplink rate and the downlink rate of 2.488Gbps, the phase locking of the recovered data cannot be realized continuously through the conventional technical scheme, and the sampling of the uplink burst transmission data cannot be completed.
Disclosure of Invention
In view of the above problems, the present application provides a method, an apparatus, a device, and a storage medium for sampling GPON uplink burst transmission data, so as to solve the above technical problems.
In a first aspect, the present application provides a method for sampling GPON uplink burst transmission data, including:
receiving a preamble of burst transmission data, and selecting five sampling points in the preambles of two adjacent unit time intervals;
respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, and determining two sampling points adjacent to a jump edge of the preamble according to the exclusive or results;
configuring a phase interpolator of a CDR until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge;
if two sampling points adjacent to the jump edge of the preamble are located at one side of the jump edge, selecting the two sampling points with the largest window margin, and recording the two sampling points as output sampling points;
and sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
In some embodiments, in the method for sampling GPON uplink burst transmission data provided in the present application, the step of determining two sampling points adjacent to a transition edge of the preamble according to the foregoing determination includes:
if the exclusive or result of the data corresponding to the two adjacent sampling points is 1, the two adjacent sampling points are positioned at two sides of the jump edge;
and if the exclusive or result of two adjacent sampling points is 0, the two adjacent sampling points are positioned at one side of the jump edge.
In some embodiments, in the method for sampling GPON uplink burst transmission data provided in the present application, the step of configuring the phase interpolator of the CDR until two sampling points adjacent to a jump edge of the preamble are located at one side of the jump edge includes:
configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a first direction until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge; or alternatively, the process may be performed,
and configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a second direction until two sampling points adjacent to a jump edge of the preamble are positioned on one side of the jump edge.
In some embodiments, in the method for sampling GPON uplink burst transmission data provided in the present application, after the step of obtaining the two sampling points with the largest window margin and recording the two sampling points as output sampling points, before the step of sampling data corresponding to the output sampling points in the sampling process of the burst transmission data, the method further includes:
and receiving the burst transmission data, acquiring the relative positions of the burst transmission data and the two output sampling points in real time, and reconfiguring a phase interpolator of the CDR if the relative positions of the burst transmission data and the two output sampling points are changed.
In some embodiments, in the method for sampling GPON uplink burst transmission data provided in the present application, when the relative positions of the burst transmission data and two output sampling points are changed, the step of reconfiguring the phase interpolator of the CDR includes:
if the burst transmission data moves to the first direction relative to the output sampling point, configuring a phase interpolator of the CDR, and moving the phase of the CDR to the first direction;
and if the burst transmission data moves to the second direction relative to the output sampling point, configuring a phase interpolator of the CDR, and moving the phase of the CDR to the second direction.
In some embodiments, in the method for sampling GPON uplink burst transmission data provided in the present application, the steps of respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, determining two sampling points adjacent to a jump edge of the preamble according to the exclusive or results, further include:
repeating the step of obtaining the exclusive or result of the data corresponding to the two adjacent sampling points for a plurality of times, and determining the two sampling points adjacent to the jump edge of the preamble according to the finally obtained exclusive or result.
In a second aspect, the present application provides a sampling device for GPON uplink burst transmission data, including:
the receiving unit is used for receiving the lead codes of the burst transmission data and selecting five sampling points in the lead codes of two adjacent unit time intervals; for receiving the burst transmission data;
the operation unit is used for calculating exclusive or results of data corresponding to two adjacent sampling points;
a configuration unit for configuring a phase interpolator of the CDR;
the sampling selection unit is used for selecting two sampling points with the largest window margin, namely output sampling points;
and the sampling unit is used for sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
In some embodiments, the sampling device for GPON uplink burst transmission data provided in the present application further includes:
and the real-time monitoring unit is used for acquiring the relative positions of the burst transmission data and the two output sampling points in real time.
In a third aspect, the present application provides an electronic device comprising a memory for storing a computer program and a processor; the processor is configured to read the computer program in the memory, and execute the steps of the method for sampling GPON uplink burst transmission data provided in the first aspect.
In a fourth aspect, the present application provides a computer readable storage medium having stored thereon a readable computer program which when executed by a processor performs the steps of the method for sampling GPON upstream burst transmission data as provided in the first aspect.
According to the sampling method, the device, the equipment and the storage medium for the GPON uplink burst transmission data, the implementation is based on a serdes module of an FPGA, the preamble of the GPON uplink burst transmission data is received, five sampling points are arbitrarily selected from the preambles of two adjacent unit time intervals, the two sampling points adjacent to the jump edge of the preamble are determined according to the exclusive or result of the data corresponding to the two adjacent sampling points, the phase of the CDR is moved through a phase interpolator of the configuration CDR, so that the two sampling points adjacent to the jump edge of the preamble are located on one side of the jump edge, the two sampling points with the largest window margin are selected at the current moment and recorded as output sampling points, and the data corresponding to the output sampling points are sampled in the sampling process of the burst transmission data. According to the method, 2.5 times of oversampling is selected, multiple judgment is carried out on the selected five sampling points, the phase interpolator of the CDR is configured to move the phase of the CDR, two sampling points with the largest window margin are verified to serve as output sampling points to be sampled in the sampling process of burst transmission data, and the phase locking and the subsequent sampling of burst transmission data in the GPON protocol set time are realized at low cost aiming at the symmetric GPON technology of 2.488Gbps in the uplink and 2.488Gbps in the downlink.
Further, in the sampling method for GPON uplink burst transmission data provided by the present application, after receiving burst transmission data, the relative positions of the burst transmission data and the two output sampling points are monitored in real time, and when the relative positions of the burst transmission data and the two output sampling points are changed, the phase interpolator of the CDR is reconfigured. According to the method and the device, the phase drift of the sampling point is dynamically tracked before sampling, the drift direction of the sampling point is dynamically judged, and the dynamic tracking of the frequency offset sent by an opposite terminal (a port for sending data) within 100ppm (parts per million) is realized.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a flowchart of a sampling method of GPON uplink burst transmission data according to an embodiment of the present application.
Fig. 2 shows another flowchart of a sampling method of GPON uplink burst transmission data according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a sampling method of GPON uplink burst transmission data according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a sampling device for GPON uplink burst transmission data according to an embodiment of the present application.
Fig. 5 is another schematic diagram of a sampling device for GPON uplink burst transmission data according to an embodiment of the present application.
Fig. 6 shows a schematic diagram of an electronic device provided in an embodiment of the present application.
Fig. 7 shows a schematic diagram of a computer storage medium provided in an embodiment of the present application.
Detailed Description
In order to better understand the solution of the present application, the following description will make clear and complete descriptions of the technical solution of the embodiment of the present application with reference to the accompanying drawings in the embodiment 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.
In the embodiments of the present application, it should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
In addition, the term "plurality" in the embodiments of the present application means two or more, and in view of this, the term "plurality" may be understood as "at least two" in the embodiments of the present application.
Fig. 1 shows a flowchart of a method for sampling GPON uplink burst transmission data provided by an embodiment of the present application, as shown in fig. 1, a method for sampling GPON uplink burst transmission data provided by an embodiment of the present application, a serdes module based on an FPGA, and a CDR of the serdes module, including:
step S10: receiving a preamble of burst transmission data, and selecting five sampling points in the preambles of two adjacent unit time intervals; the GPON receives burst transmission data in an uplink manner, and according to the allocated time slot, the optical module converts the received optical signal of the GPON frame into an electrical signal and outputs the electrical signal to a receiving end of the serdes module, and the receiving end of the serdes module receives a preamble of the burst transmission data first, where the preamble of the burst transmission data generally includes 800-1000 UIs (Unit Interval), and in this embodiment, the preamble of two adjacent UIs is selected, and five sampling points are selected from the preambles of the two adjacent UIs. It should be clear that, when the technical scheme provided by the embodiment of the application is initially applied, the two preambles of the selected adjacent UIs are arbitrarily selected from the received preambles, and the selected five sampling points are also arbitrarily selected, but after repeated application for a plurality of times, the preferred five sampling point positions can be obtained according to previous selection experience.
Step S20: and respectively acquiring exclusive or results of data corresponding to the two adjacent sampling points, and determining the two sampling points adjacent to the jump edge of the preamble according to the exclusive or results.
In some embodiments, step S20: respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, and determining two sampling points adjacent to a jump edge of a preamble according to the exclusive or results, wherein the steps comprise:
if the exclusive or result of the data corresponding to the two adjacent sampling points is 1, the two adjacent sampling points are positioned at the two sides of the jump edge;
if the exclusive or result of two adjacent sampling points is 0, the two adjacent sampling points are positioned at one side of the jump edge.
The preamble of the burst transmission data is composed of binary numbers, so if the exclusive or result of the data corresponding to two adjacent sampling points is 1, the data corresponding to the two sampling points are changed (for example, 0 is changed into 1 or 1 is changed into 0), namely, a jump edge exists between the two sampling points, and the two adjacent sampling points are located at two sides of the jump edge; if the exclusive or result of two adjacent sampling points is 0, the data corresponding to the two sampling points are the same (same as 0 or same as 1), and at this time, the two adjacent sampling points are located at one side of the jump edge.
As an embodiment, in order to eliminate the effect of metastability, step S20: respectively obtaining exclusive or results of data corresponding to the two adjacent sampling points, determining two sampling points adjacent to the jump edge of the preamble according to the exclusive or results, and further comprising:
repeating the step of obtaining the exclusive or result of the data corresponding to the two adjacent sampling points for a plurality of times, and determining the two sampling points adjacent to the jump edge of the preamble according to the finally obtained exclusive or result.
Step S30: configuring a phase interpolator of the CDR until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge; the phase interpolator of the CDR is configured to shift the phase of the CDR, i.e. the position of the five sample points at this time is changed with respect to the preamble of the first two UIs.
In some embodiments, step S30: the step of configuring a phase interpolator of a CDR until two sampling points adjacent to a transition edge of a preamble are located at one side of the transition edge, includes:
configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a first direction until two sampling points adjacent to a jump edge of a preamble are positioned at one side of the jump edge; or alternatively, the process may be performed,
and configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a second direction until two sampling points adjacent to a jump edge of the preamble are positioned on one side of the jump edge.
If the burst transmission data and the preamble are regarded as being transmitted in the left-right direction, the first direction and the second direction respectively represent the phase of the CDR shifted to the left and the phase of the CDR shifted to the right; if the burst transmission data and the preamble are regarded as being transmitted in the up-down direction, the first direction and the second direction respectively represent the phase of the upward movement CDR and the phase of the downward movement CDR, and the rest of the similar conditions are the same.
Step S40: if two sampling points adjacent to the jump edge of the preamble are located at one side of the jump edge, selecting the two sampling points with the largest window margin, and marking the two sampling points as output sampling points, wherein the output sampling points are sampling points required by burst transmission data sampling.
Step S50: and sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
According to the sampling method for the uplink burst transmission data of the GPON, a 2.5-time oversampling scheme is selected, multiple judgment is carried out on the selected five sampling points, the phase interpolator of the CDR is configured to move the phase of the CDR, two sampling points with the largest window margin are verified to serve as output sampling points to be sampled in the sampling process of the burst transmission data, and the phase locking in the specified time of the GPON protocol and the sampling of the subsequent burst transmission data are realized with low cost aiming at the symmetric GPON technology of uplink 2.488Gbps and downlink 2.488 Gbps.
Fig. 2 shows another flowchart of a method for sampling GPON uplink burst transmission data according to an embodiment of the present application, as shown in fig. 2, where after step S40, before step S50, the method for sampling GPON uplink burst transmission data according to an embodiment of the present application further includes:
step S45: and receiving burst transmission data, monitoring the relative positions of the burst transmission data and the two output sampling points in real time, and if the relative positions of the burst transmission data and the two output sampling points are changed, reconfiguring a phase interpolator of the CDR.
If the burst transmission data moves to the first direction relative to the output sampling point, a phase interpolator of the CDR is configured, and the phase of the CDR is moved to the first direction; if the burst transmission data moves to the second direction relative to the output sampling point, a phase interpolator of the CDR is configured, and the phase of the CDR is moved to the second direction.
As described above, if burst transmission data and a preamble are regarded as being transmitted in the left-right direction, the first direction and the second direction represent the phase of shifting the CDR to the left and the phase of shifting the CDR to the right, respectively; if the burst transmission data and the preamble are regarded as being transmitted in the up-down direction, the first direction and the second direction respectively represent the phase of the upward movement CDR and the phase of the downward movement CDR, and the rest of the similar conditions are the same.
According to the sampling method for the GPON uplink burst transmission data, the phase drift of the sampling point is dynamically tracked before sampling, the drift direction of the sampling point is dynamically judged, and the dynamic tracking of the frequency offset sent by the opposite end (the port for sending the data) within 100ppm (parts per million frequency offset) is realized.
In the following, by illustrating the method for sampling the GPON uplink burst transmission data provided by the embodiment of the present application, fig. 3 shows a schematic diagram of the method for sampling the GPON uplink burst transmission data provided by the embodiment of the present application, as shown in fig. 3, the serdes module receives the preamble of the burst transmission data, and initially, the CDR is in bypass state, and the PI (Phase Interpolator ) initial value is 0. s 1-s 5 are 5 sampling points of the 2 UI of D1-D2, after 5 sampling points are selected, D1-D5 5bit data corresponding to the sampling points are output at a serdes parallel interface, two adjacent bits are subjected to exclusive or, at the moment, a jump edge is positioned between the sampling points s3 and s4, namely d3=1 (the sign of exclusive or is represented by D3D 4 = 1), and the current exclusive or result is stored. The step of xoring adjacent two bits may be repeated a plurality of times in order to eliminate the effect of metastability.
Configuring the PI value of the CDR to be 32 through the serdes low-speed configuration bus (about 100 Mhz), that is, indicating that the phase of the CDR is shifted to the left by 1/8UI, as shown in fig. 3, d3=d4=1 when the PI value is 32, and at this time, the transition edge is still located between sampling points s3 and s4, and storing the current exclusive or result.
Continuing to configure the CDR with PI value of 64 via the serdes low speed configuration bus (about 100 Mhz), which means that the CDR phase is shifted by 1/8UI to the left, d3.d 4 = 0, as shown in fig. 3, when the transition edge is not between the sampling point s3 and the sampling point s4, i.e. the sampling point s3 and the sampling point s4 are located at one side of the transition edge, the current exclusive or result is stored.
When the sampling point s3 and the sampling point s4 are both positioned at one side of the jump edge, the window margin (setup and hold margin) of the sampling point s3 and the sampling point s5 is relatively maximum, and the sampling point s3 and the sampling point s5 are selected as output sampling points.
It should be clear that the phase of the CDR is not limited to moving to the left, but can also be configured to move to the right for the purpose of sampling point s3 and sampling point s4 both being located to the right of the transition edge. In addition, the embodiment of the present application is only for convenience of explanation, in the example, it is realized that the sampling point s3 and the sampling point s4 are located at one side of the transition edge only by two phase shifts, and in the practical application of the embodiment of the present application, it may be necessary to perform multiple phase shifts to achieve the above objective, but the whole phase shift process should be implemented before the preamble transmission is completed, on the other hand, the CDR is not limited to move 1/8UI at a time, and the example is only for illustration.
After selecting the output sampling point, starting to receive burst transmission data, in the data transmission process, monitoring the relative positions of the burst transmission data and the two output sampling points in real time, specifically judging whether the relative positions of the burst transmission data and the two output sampling points change by monitoring the exclusive or result of the data corresponding to the sampling point s2 and the sampling point s3, as shown in fig. 3, if d2 d3 = 0, d3 d4 = 0, in the data transmission process, d2 d3 = 1, d3 d4 = 0, indicating that the data is right shifted relative to the sampling point at this time, and if the phase of the CDR is right shifted, controlling the phase of the CDR to be right by 1/8UI, and configuring the PI value of the serdes low-speed configuration bus (about 100 Mhz) to 256-32 = 224. Conversely, as shown in fig. 3, when d1 '. Times.d5=0, d4.times.d5=1, d1'. Times.d5=1, and d4.times.d5=0 indicate that the data is shifted left with respect to the sampling point during the data transmission, the CDR phase shift should be controlled, for example, by adjusting 1/8UI to the left, and the serdes low-speed configuration bus (about 100 Mhz) configures PI value to be 32. The sampling point D1' is the burst transmission data corresponding to the sampling point s1', and the sampling point s1' is the position of the sampling point s1 in the preamble of the UI adjacent to D2. The illustration is: s 1-s 5 are 5 sampling points of 2 UI (digital video) of D1-D2, s1 'to s5' are 5 sampling points of two UI (digital video) of D3-D4, and s1 'to s5' can be overlapped with s 1-s 5 through translation, wherein D3 is adjacent to D2, and D4 is adjacent to D3.
In the above example, whether the burst transmission data is shifted right with respect to the sampling point is determined by obtaining the results of d2'd 3 and d 3'd 4, and whether the burst transmission data is shifted left with respect to the application point is determined by obtaining the results of d 1'd 5 and d 4'd 5.
Fig. 4 is a schematic diagram of a sampling device for GPON uplink burst transmission data provided in an embodiment of the present application, as shown in fig. 4, and based on the above-mentioned method for sampling GPON uplink burst transmission data, an embodiment of the present application provides a sampling device for GPON uplink burst transmission data, as shown in fig. 4, where the device includes:
a receiving unit 100, configured to receive a preamble of burst transmission data, and select five sampling points in preambles of two adjacent unit time intervals; for receiving burst transmission data;
the operation unit 200 is configured to calculate an exclusive or result of data corresponding to two adjacent sampling points;
a configuration unit 300 for configuring a phase interpolator of the CDR;
a sampling selection unit 400, configured to select two sampling points with the largest window margin, and record the two sampling points as output sampling points;
and the sampling unit 500 is used for sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
In some embodiments, as shown in fig. 5, the sampling device for GPON uplink burst transmission data provided in the embodiments of the present application further includes:
and the real-time monitoring unit 600 is configured to obtain, in real time, the relative positions of the burst transmission data and the two output sampling points.
For other details of implementing the above technical solution by each module in the GPON uplink burst transmission data sampling device, reference may be made to the description in the GPON uplink burst transmission data sampling method provided in the above embodiment of the present invention, which is not repeated herein.
Based on the above-mentioned sampling method of GPON uplink burst transmission data, as shown in fig. 6, the embodiment of the present application further provides a schematic structural diagram of an electronic device, where the electronic device includes a processor 61 and a memory 62 coupled to the processor 61. The memory 62 stores a computer program which, when executed by the processor 61, causes the processor 61 to perform the steps of the sampling method of GPON upstream burst transmission data in the above-described embodiment.
For other details of implementing the above technical solution by the processor in the electronic device, reference may be made to the description in the method for sampling GPON uplink burst transmission data provided in the above embodiment of the present invention, which is not repeated here.
The processor may also be called a CPU (central processing unit), which may be an integrated circuit chip with signal processing capability; the processor may also be a general purpose processor, which may be a microprocessor or which may also be any conventional processor, etc., a DSP (Digital Signal Process, digital signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field Programmable Gata Array, field programmable gate array) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc.
As shown in fig. 7, an embodiment of the present invention further provides a schematic structural diagram of a computer-readable storage medium 70 having a readable computer program 71 stored thereon; wherein the computer program 71 may be stored in the form of a software product in the storage medium 70 described above, comprising instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to perform all or part of the steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a magnetic or optical disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), or a terminal device such as a computer, a server, a mobile phone, or a tablet.
The foregoing is a further detailed description of the present application in connection with the specific embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood by those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the present application, and the present application is not limited to the above-mentioned embodiments.
Claims (10)
1. The method for sampling the uplink burst transmission data of the GPON is characterized by comprising the following steps of:
receiving a preamble of burst transmission data, and selecting five sampling points in the preambles of two adjacent unit time intervals;
respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, and determining two sampling points adjacent to a jump edge of the preamble according to the exclusive or results;
configuring a phase interpolator of a CDR until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge;
if two sampling points adjacent to the jump edge of the preamble are located at one side of the jump edge, selecting the two sampling points with the largest window margin, and recording the two sampling points as output sampling points;
and sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
2. The method for sampling GPON uplink burst transmission data according to claim 1, wherein the step of determining two sampling points adjacent to a transition edge of the preamble according to the exclusive or result comprises:
if the exclusive or result of the data corresponding to the two adjacent sampling points is 1, the two adjacent sampling points are positioned at two sides of the jump edge;
and if the exclusive or result of two adjacent sampling points is 0, the two adjacent sampling points are positioned at one side of the jump edge.
3. The method for sampling GPON uplink burst transmission data according to claim 1, wherein the step of configuring the phase interpolator of the CDR until two sampling points adjacent to a transition edge of the preamble are located at one side of the transition edge comprises:
configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a first direction until two sampling points adjacent to a jump edge of the preamble are positioned at one side of the jump edge; or alternatively, the process may be performed,
and configuring a phase interpolator of the CDR, and moving the phase of the CDR towards a second direction until two sampling points adjacent to a jump edge of the preamble are positioned on one side of the jump edge.
4. The method for sampling GPON uplink burst transmission data according to claim 1, wherein if two sampling points adjacent to a transition edge of the preamble are located on one side of the transition edge, selecting two sampling points with the largest window margin, and recording the two sampling points as output sampling points, and before the step of sampling data corresponding to the output sampling points in the burst transmission data sampling process, further comprises:
and receiving the burst transmission data, monitoring the relative positions of the burst transmission data and the two output sampling points in real time, and if the relative positions of the burst transmission data and the two output sampling points are changed, reconfiguring a phase interpolator of the CDR.
5. The method for sampling GPON uplink burst transmission data according to claim 4, wherein the step of reconfiguring the phase interpolator of the CDR when the relative positions of the burst transmission data and the two output sampling points are changed, comprises:
if the burst transmission data moves to the first direction relative to the output sampling point, configuring a phase interpolator of the CDR, and moving the phase of the CDR to the first direction;
and if the burst transmission data moves to the second direction relative to the output sampling point, configuring a phase interpolator of the CDR, and moving the phase of the CDR to the second direction.
6. The method for sampling GPON uplink burst transmission data according to claim 1, wherein the steps of respectively obtaining exclusive or results of data corresponding to two adjacent sampling points, and determining two sampling points adjacent to a transition edge of the preamble according to the exclusive or results, further comprise:
repeating the step of obtaining the exclusive or result of the data corresponding to the two adjacent sampling points for a plurality of times, and determining the two sampling points adjacent to the jump edge of the preamble according to the finally obtained exclusive or result.
7. A sampling device for GPON uplink burst transmission data, comprising:
the receiving unit is used for receiving the lead codes of the burst transmission data and selecting five sampling points in the lead codes of two adjacent unit time intervals; for receiving the burst transmission data;
the operation unit is used for calculating exclusive or results of data corresponding to two adjacent sampling points;
a configuration unit for configuring a phase interpolator of the CDR;
the sampling selection unit is used for selecting two sampling points with the largest window margin and recording the two sampling points as output sampling points;
and the sampling unit is used for sampling the data corresponding to the output sampling point in the sampling process of the burst transmission data.
8. The GPON upstream burst data sampling apparatus of claim 7, further comprising:
and the real-time monitoring unit is used for acquiring the relative positions of the burst transmission data and the two output sampling points in real time.
9. An electronic device comprising a memory and a processor, the memory for storing a computer program; the processor is configured to read the computer program in the memory, and execute the steps of the GPON uplink burst transmission data sampling method according to any one of claims 1 to 6.
10. A computer readable storage medium, wherein a readable computer program is stored thereon, which when executed by a processor, implements the steps of the GPON upstream burst transmission data sampling method according to any one of claims 1 to 6.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596603A (en) * | 1993-08-23 | 1997-01-21 | Sennheiser Electronic Kg | Device for wireless transmission of digital data, in particular of audio data, by infrared light in headphones |
| US20080124092A1 (en) * | 2006-11-28 | 2008-05-29 | Broadlight Ltd. | Burst mode clock and data recovery circuit and method |
| CN101534154A (en) * | 2009-04-24 | 2009-09-16 | 武汉理工大学 | Error code test method of burst optical signal receiving module |
| US20100135666A1 (en) * | 2008-11-28 | 2010-06-03 | Electronics And Telecommunications Research Institute | Clock phase aligning apparatus for burst-mode data |
| CN102088327A (en) * | 2009-12-07 | 2011-06-08 | 华为技术有限公司 | Clock data recovery circuit, optical receiver and passive optical network (PON) equipment |
| CN104639410A (en) * | 2013-11-13 | 2015-05-20 | 沈阳高精数控技术有限公司 | Design method of field bus optical fiber communication interface |
| CN106850179A (en) * | 2016-12-23 | 2017-06-13 | 深圳市紫光同创电子有限公司 | A kind of data window querying method and circuit |
| CN108964868A (en) * | 2018-04-28 | 2018-12-07 | 昆明联诚科技股份有限公司 | A kind of ultrahigh frequency radio frequency identification (RFID) reader Miller subcarrier coding/decoding method based on FPGA |
| CN112765073A (en) * | 2019-11-04 | 2021-05-07 | 中车株洲电力机车研究所有限公司 | Data sampling method, system, storage medium and computer equipment |
-
2023
- 2023-04-03 CN CN202310341567.4A patent/CN116055926B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596603A (en) * | 1993-08-23 | 1997-01-21 | Sennheiser Electronic Kg | Device for wireless transmission of digital data, in particular of audio data, by infrared light in headphones |
| US20080124092A1 (en) * | 2006-11-28 | 2008-05-29 | Broadlight Ltd. | Burst mode clock and data recovery circuit and method |
| US20100135666A1 (en) * | 2008-11-28 | 2010-06-03 | Electronics And Telecommunications Research Institute | Clock phase aligning apparatus for burst-mode data |
| CN101534154A (en) * | 2009-04-24 | 2009-09-16 | 武汉理工大学 | Error code test method of burst optical signal receiving module |
| CN102088327A (en) * | 2009-12-07 | 2011-06-08 | 华为技术有限公司 | Clock data recovery circuit, optical receiver and passive optical network (PON) equipment |
| CN104639410A (en) * | 2013-11-13 | 2015-05-20 | 沈阳高精数控技术有限公司 | Design method of field bus optical fiber communication interface |
| CN106850179A (en) * | 2016-12-23 | 2017-06-13 | 深圳市紫光同创电子有限公司 | A kind of data window querying method and circuit |
| CN108964868A (en) * | 2018-04-28 | 2018-12-07 | 昆明联诚科技股份有限公司 | A kind of ultrahigh frequency radio frequency identification (RFID) reader Miller subcarrier coding/decoding method based on FPGA |
| CN112765073A (en) * | 2019-11-04 | 2021-05-07 | 中车株洲电力机车研究所有限公司 | Data sampling method, system, storage medium and computer equipment |
Non-Patent Citations (2)
| Title |
|---|
| 丁丹;: "突发模式通信中MMPE位同步方法的实现", 电讯技术, no. 06 * |
| 周宣;陈明义;: "基于FPGA的AES3/EBU数字音频接收器的设计", 信息技术, no. 09 * |
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