CN111600825B - Synchronization method based on equidistant time pulses - Google Patents
Synchronization method based on equidistant time pulses Download PDFInfo
- Publication number
- CN111600825B CN111600825B CN202010415884.2A CN202010415884A CN111600825B CN 111600825 B CN111600825 B CN 111600825B CN 202010415884 A CN202010415884 A CN 202010415884A CN 111600825 B CN111600825 B CN 111600825B
- Authority
- CN
- China
- Prior art keywords
- synchronization
- time
- data
- receiving end
- pulse
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
- H04L27/2659—Coarse or integer frequency offset determination and synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
- H04L27/266—Fine or fractional frequency offset determination and synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a synchronization method based on equidistant time pulses, which is characterized in that a clock calibration device of a transmitting end is used for opening the time calibration of the transmitting end when the transmitting end transmits signals and transmitting data on the time calibration; and the receiving end clock scale device is used for rapidly and accurately positioning the synchronous position. The probability of false triggering can be reduced, so that overlong synchronous data are not needed for synchronization, the synchronization time is shortened, the calculated amount of a synchronization algorithm is reduced, the hardware cost is saved, the data synchronization of a receiving end and a transmitting end is realized rapidly, the false triggering probability is reduced, and the precision and the communication performance are improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a synchronization method based on equidistant time pulses.
Background
With the implementation of the national smart grid in recent years, the requirements for digital communication are becoming higher, and in a communication system, particularly in a digital communication system, synchronization is a very important problem. If there is a deviation in synchronization, the data transmission of the subsequent transmission will be inaccurate, and even the communication will fail.
The traditional synchronization method generally adopts the method of increasing the synchronization time to solve the synchronization problem, performs coarse carrier synchronization at any moment, and then completes the time synchronization of the receiving end by using fine carrier synchronization. Coarse carrier synchronization is easy to cause false triggering under the condition of low signal-to-noise ratio, and very long synchronization frame heads are required to be designed; if the length of the transmitted signal is not long, the synchronization time even exceeds the time for transmitting and receiving the real data when the data are continuously interacted, so that the synchronization time is long, the efficiency is low, the actual communication rate is influenced, and the communication performance is reduced.
Disclosure of Invention
The invention aims to provide a synchronization method based on equidistant time pulses, which uses the same clock scale device of a transmitting end and a receiving end, adopts a mode of coarse carrier synchronization and fine carrier synchronization to quickly realize the data synchronization of the receiving end and the transmitting end, shortens the synchronization time, reduces the false triggering probability and improves the precision and the communication performance.
To achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the transmitting end generates an equidistant time pulse of the transmitting end by using a local clock device, and transmits data at the equidistant time pulse; the receiving end adopts coarse carrier synchronization and fine carrier synchronization to receive data, and primary synchronization is completed; after the data of the frame is correctly received, correctly estimating the primary synchronization moment by adopting the receiving; and generating an equidistant time pulse of the receiving end by using a local clock device of the receiving end according to the primary synchronization moment.
To achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the transmitting end continuously transmits data, the receiving end receives the data at the equal interval time pulse of each receiving end, coarse carrier synchronization and fine carrier synchronization are carried out, the equal interval pulse of the receiving end is checked at each estimated synchronization moment, after the check is correct, the calibrated equal interval time pulse of the receiving end is utilized to receive the data of the transmitting end again, and the operation is repeated.
To achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: when the receiving end can not realize the correct synchronization of the data or check the data receiving error for a long time, the primary synchronization action is carried out again, and the primary synchronization moment is estimated.
To achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: firstly, finding a rough initial position of a code element in a data signal of single transmission and a preliminary positioning signal by using rough carrier synchronization; and carrying out phase synchronization and code element synchronization calculation by utilizing fine carrier synchronization, and accurately positioning the synchronization position.
To achieve the above object, the present invention provides a synchronization method based on equally spaced time pulses, the method comprising: the symbol synchronization acquires synchronization information from a received signal, so that a clock pulse sequence generated by a receiving end and the start and stop time of a received symbol keep a correct relationship. The clock pulse sequence which is generated by the receiving end and is strictly synchronous with the received code element has the same period as the received code element, the phase is aligned with the start-stop time of the received code element, and the integration interval and the sampling decision time of each code element are determined.
The beneficial effects of the invention are as follows: the false triggering problem of communication synchronization at low signal-to-noise ratio is solved by the time pulses with equal intervals; the synchronization time is shortened, and the synchronization accuracy is improved.
Drawings
Fig. 1 is a simplified process diagram of the synchronization method of the present invention based on equally spaced time pulses.
Fig. 2 is a flow chart of the synchronization method based on the equal interval time pulse of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Fig. 1 is a simplified process diagram of a synchronization method based on equally spaced time pulses according to an embodiment of the present invention. As shown in fig. 1, the method includes:
step 1: the transmitting end transmits data based on the equidistant time pulse generated by the transmitting end time scale device;
step 2: the receiving end receives the data, estimates the initial time of transmission, generates an equidistant time pulse by using a time scale device of the receiving end, and receives the subsequent data at the equidistant time pulse sequence of the receiving end.
Fig. 2 is a flowchart of a synchronization method based on equally spaced time pulses according to an embodiment of the invention. As shown in fig. 2, the method includes:
step 1: the local clock scale device is used at the transmitting end to generate the equidistant time pulse at the transmitting end. At the sync pulse, transmitting data;
step 2: the receiving end receives the first frame data, adopts the method of coarse carrier synchronization and fine carrier synchronization to complete the primary synchronization, and displays correct receiving after the frame data is checked, and then adopts the correct data received at this time to estimate the primary synchronization moment and give out initial pulse;
step 3: generating an equidistant time pulse by using a local clock calibration device at a receiving end according to the estimated primary synchronization moment;
step 4: receiving data sent by a sending end at the equidistant pulse sequence of a receiving end, and carrying out coarse carrier synchronization and fine carrier synchronization; after each frame of data received subsequently is received correctly, estimating the synchronous moment, calibrating the equidistant time pulse of the receiving end, and receiving the signal data according to the calibrated equidistant time pulse;
step 5: and (3) the receiving end program cannot be synchronized correctly for a long time or data check is wrong after synchronization, step (2) is repeated for re-synchronization, and the primary synchronization moment is estimated.
Claims (4)
1. A method of synchronizing based on equally spaced time pulses, the method comprising:
step 1: generating a time pulse with equal intervals at the transmitting end by using a local clock scale device at the transmitting end, and transmitting data at the synchronous pulse;
step 2: the receiving end receives the first frame data, adopts the method of coarse carrier synchronization and fine carrier synchronization to complete the primary synchronization, and displays correct receiving after the frame data is checked, and then adopts the correct data received at this time to estimate the primary synchronization moment and give out initial pulse;
step 3: generating an equidistant time pulse by using a local clock calibration device at a receiving end according to the estimated primary synchronization moment;
step 4: receiving data sent by a sending end at the equidistant pulse sequence of a receiving end, and carrying out coarse carrier synchronization and fine carrier synchronization; after each frame of data received subsequently is received correctly, estimating the synchronous moment, calibrating the equidistant time pulse of the receiving end, and receiving the signal data according to the calibrated equidistant time pulse;
step 5: and (3) the receiving end program cannot be synchronized correctly for a long time or data check is wrong after synchronization, step (2) is repeated for re-synchronization, and the primary synchronization moment is estimated.
2. The method of claim 1, wherein the method further comprises:
firstly, finding a rough initial position of a code element in a data signal of single transmission and a preliminary positioning signal by using rough carrier synchronization;
carrying out phase synchronization and code element synchronization calculation by utilizing fine carrier synchronization, and accurately positioning a synchronization position;
after the synchronous position is positioned, the clock calibration device at the receiving end generates time pulses with equal intervals.
3. The method of claim 2, wherein symbol synchronization obtains synchronization information from a received signal, such that a clock pulse sequence generated at a receiving end maintains a correct relationship with a start-stop time of a received symbol; the clock pulse sequence which is generated by the receiving end and is strictly synchronous with the received code element has the same period as the received code element period, and the phase is aligned with the start-stop time of the received code element, so that the integration interval and the sampling decision time of each code element can be determined.
4. The method of claim 2, wherein when the receiving end fails to achieve data proper synchronization or check data reception errors for a long time, the primary synchronization of claim 1 is performed again, and the primary synchronization time is estimated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415884.2A CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010415884.2A CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111600825A CN111600825A (en) | 2020-08-28 |
| CN111600825B true CN111600825B (en) | 2023-05-12 |
Family
ID=72191326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010415884.2A Active CN111600825B (en) | 2020-05-16 | 2020-05-16 | Synchronization method based on equidistant time pulses |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111600825B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662448A (en) * | 2009-08-19 | 2010-03-03 | 东南大学 | Wireless communication method of high-speed sampling low-accuracy quantification impulse ultra-wideband |
| CN110224762A (en) * | 2018-03-02 | 2019-09-10 | 科大国盾量子技术股份有限公司 | A kind of impulsive synchronization method and system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2997505B2 (en) * | 1990-05-16 | 2000-01-11 | 株式会社東芝 | Satellite communication device and satellite communication system |
| US5137022A (en) * | 1990-07-13 | 1992-08-11 | Cook Pacemaker Corporation | Synchronous telemetry system and method for an implantable medical device |
| FR2743967B1 (en) * | 1996-01-18 | 1998-03-27 | France Telecom | METHOD AND DEVICE FOR TIME SYNCHRONIZATION OF A RECEIVER OF A MULTI-CARRIER SIGNAL |
| CN100476443C (en) * | 2006-10-10 | 2009-04-08 | 浙江大学 | Wide-zone electric-net phasor synchronous measuring device with freely-set synchronous time scale |
| CA2882321C (en) * | 2011-12-14 | 2018-05-01 | Wolfson Microelectronics Plc | Data transfer |
| CN107171762B (en) * | 2017-05-09 | 2019-04-02 | 烽火通信科技股份有限公司 | A kind of 1PPS+TOD information monobus transmission synchronization system and method |
| CN107656151B (en) * | 2017-08-10 | 2020-12-29 | 国家电网公司 | Measurement and control method for realizing synchronous sampling and processing of full-time-sequence power grid measurement data |
| CN208707646U (en) * | 2018-05-21 | 2019-04-05 | 科大国盾量子技术股份有限公司 | A kind of clock synchronization system in quantum secret communication |
| CN108923876B (en) * | 2018-06-27 | 2020-11-27 | 北京旷视机器人技术有限公司 | Time synchronization method, device and system |
-
2020
- 2020-05-16 CN CN202010415884.2A patent/CN111600825B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662448A (en) * | 2009-08-19 | 2010-03-03 | 东南大学 | Wireless communication method of high-speed sampling low-accuracy quantification impulse ultra-wideband |
| CN110224762A (en) * | 2018-03-02 | 2019-09-10 | 科大国盾量子技术股份有限公司 | A kind of impulsive synchronization method and system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111600825A (en) | 2020-08-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11115941B2 (en) | Wireless communication system, wireless terminal, and time synchronization method | |
| US6483856B1 (en) | GPS synchronized data communications link | |
| CN109669899B (en) | Method for adaptively adjusting serial port communication baud rate and serial port device | |
| CN112600637B (en) | Wireless broadcast time service calibration method, device and computer readable storage medium | |
| CN112616181B (en) | Current differential protection data synchronization method and system adaptive to 5G communication | |
| CN111208539B (en) | High-precision GNSS simulator time synchronization method | |
| CN111711948B (en) | Method and system for acquiring high-precision time from 5G base station through air interface | |
| US20220360350A1 (en) | Method and apparatus for acquiring timestamp of data stream, storage medium, and electronic apparatus | |
| CN113075710B (en) | Positioning difference information acquisition method, device, equipment and computer storage medium | |
| KR101880925B1 (en) | Network synchronization method between devices in tatical data link | |
| US8369308B2 (en) | Remote I/O system and synchronization method in the same | |
| US20110016232A1 (en) | Time stamping apparatus and method for network timing synchronization | |
| CN111600825B (en) | Synchronization method based on equidistant time pulses | |
| CN110109155B (en) | Bidirectional time correction method without application software interruption on satellite | |
| CN111107623A (en) | System clock synchronization method | |
| CN103676634A (en) | Time pulse synchronization method based on RDSS satellite navigation system | |
| CN107483291B (en) | Optical fiber longitudinal differential time synchronization method | |
| WO2016000324A1 (en) | Method and apparatus for implementing time synchronization | |
| CN116257483A (en) | Asynchronous serial port communication baud rate self-adaption method and device and asynchronous serial port equipment | |
| KR101965932B1 (en) | UTC Time Synchronization Method for a Device using GPS Module | |
| KR101967027B1 (en) | Improved UTC Time Synchronization Method for a Device using GPS Module in Abnormal Operation Condition | |
| JP2009025028A (en) | Positioning system | |
| CN112272360A (en) | Current differential protection data synchronization method and system based on 5G network time synchronization | |
| EP2398173A1 (en) | Remote I/O system and synchronization method in the same | |
| CN111800164B (en) | UWB decoding method, device, receiver and UWB positioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240102 Address after: 266000 12th floor, 4b building, 858 Huaguan Road, high tech Zone, Qingdao City, Shandong Province Patentee after: QINGDAO TOPSCOMM COMMUNICATION Co.,Ltd. Patentee after: Qingdao Dingxin Communication Power Engineering Co.,Ltd. Address before: 266000 12th floor, 4b building, 858 Huaguan Road, high tech Zone, Qingdao City, Shandong Province Patentee before: QINGDAO TOPSCOMM COMMUNICATION Co.,Ltd. Patentee before: Shenyang Keyuan State Grid Power Engineering Survey and Design Co.,Ltd. |