CN114095056A - Data transmission method, device, equipment and storage medium - Google Patents
Data transmission method, device, equipment and storage medium Download PDFInfo
- Publication number
- CN114095056A CN114095056A CN202111299690.1A CN202111299690A CN114095056A CN 114095056 A CN114095056 A CN 114095056A CN 202111299690 A CN202111299690 A CN 202111299690A CN 114095056 A CN114095056 A CN 114095056A
- Authority
- CN
- China
- Prior art keywords
- signal
- spread spectrum
- transmitted
- determining
- transmission
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7097—Interference-related aspects
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention relates to a data transmission method, device, equipment and storage medium, by receiving each signal to be transmitted, then determining the number of signals to be transmitted and determining the maximum bandwidth of each signal to be transmitted according to the number of the signals to be transmitted, further determining a spread spectrum code sequence of the signal to be transmitted according to the maximum bandwidth, performing spread spectrum processing on the signal to be transmitted according to the spread spectrum code sequence to obtain a spread spectrum signal, and finally transmitting the spread spectrum signal to a master station, thus, when the spread spectrum processing is carried out on the signals to be transmitted, the maximum bandwidth of each signal to be transmitted is determined according to the number of the signals to be transmitted, thereby determining a spread code sequence for spread spectrum processing, ensuring the transmission quantity of signals to be transmitted, meanwhile, due to the adoption of spread spectrum transmission, the anti-interference capability of signals to be transmitted is improved, and the balance between the transmission quantity of the signals and the anti-interference capability is realized.
Description
Technical Field
The present invention relates to the field of power system monitoring technologies, and in particular, to a data transmission method, apparatus, device, and storage medium.
Background
The power system is a system related to power generation, power transmission, power transformation and power distribution, and in order to ensure the safe operation of the power system, a plurality of sensors are arranged in the power system to detect each device and line, and transmit the detected device or line to a master station to alarm when the device or line is detected to be abnormal.
However, when signal transmission is performed, noise interference may exist, which may cause erroneous judgment on the operating condition of the device and the conduction condition of the line, and affect the safe operation of the power system. In order to improve the anti-interference capability of the original signal, the original signal may be spread and then transmitted, that is, the original signal is modulated to form a digital signal, then the spread spectrum code sequence generated by the spread spectrum code generator modulates the digital signal to broaden the spectrum of the signal, and the broadened signal is then modulated to a radio frequency to be transmitted. The broadband radio frequency signal received at the receiving end of the main station is converted into intermediate frequency, then decorrelated and de-spread by the locally generated spread spectrum code sequence which is the same as the transmitting end, and the original information is recovered to be output after information demodulation. However, the variation of the bandwidth also affects the number of signals that can be transmitted, so that the number of data transmitted in the same time is reduced, and therefore, a method for balancing the number of signals transmitted and the interference resistance during signal transmission is urgently needed.
Disclosure of Invention
Based on this, it is necessary to provide a data transmission method capable of balancing the number of signals transmitted and the interference resistance during signal transmission.
A method of data transmission, comprising:
receiving each signal to be transmitted;
determining the number of signals to be transmitted, and determining the maximum bandwidth of each signal to be transmitted according to the number of the signals to be transmitted;
determining a spreading code sequence of the signal to be transmitted according to the maximum bandwidth, and performing spreading processing on the signal to be transmitted according to the spreading code sequence to obtain a spreading signal;
and transmitting the spread spectrum signal to the primary station.
In one embodiment, the transmitting the spread-spectrum signal to the primary station comprises:
determining a transmission channel of the signal to be transmitted according to the signal to be transmitted;
and transmitting the spread spectrum signal to the master station through the transmission channel.
In one embodiment, the determining, according to the signal to be sent, a transmission channel of the signal to be sent includes:
determining the transmission level of the signal to be transmitted according to the sensor identifier;
and determining the transmission channel according to the transmission level.
In one embodiment, the transmission channels include a high-speed channel and a general channel, the transmission levels include a priority level and a normal level, and the determining the transmission channels according to the transmission levels includes:
if the transmission level is the priority, taking the high-speed channel as the transmission channel;
and if the transmission level is a normal level, taking the general channel as the transmission channel, wherein the transmission rate of the high-speed channel is higher than that of the general channel.
In one embodiment, the method further comprises:
performing despreading processing on the spread spectrum signal to obtain a despread signal;
determining a signal-to-noise ratio of the spread spectrum signal according to the spread spectrum signal and the despread signal;
and if the signal-to-noise ratio is lower than a preset signal-to-noise ratio threshold value, outputting an alarm signal.
In one embodiment, the determining the signal-to-noise ratio of the spread spectrum signal according to the spread spectrum signal and the despread signal comprises:
acquiring a first power of the spread spectrum signal and a second power of the despread signal;
obtaining a difference value between the first power and the second power;
and acquiring the signal-to-noise ratio according to the difference value and the second power.
In one embodiment, the determining the spreading code sequence of the signal to be transmitted according to the maximum bandwidth includes:
determining a spreading factor of the signal to be transmitted according to the maximum bandwidth;
generating the spreading code sequence according to the spreading factor.
A data transmission apparatus, the apparatus comprising:
the receiving module is used for receiving each signal to be sent;
the bandwidth determining module is used for determining the number of signals to be sent and determining the maximum bandwidth of each signal to be sent according to the number of the signals to be sent;
the spread spectrum module is used for determining a spread spectrum code sequence of the signal to be sent according to the maximum bandwidth and performing spread spectrum processing on the signal to be sent according to the spread spectrum code sequence to obtain a spread spectrum signal;
and the transmitting module is used for transmitting the spread spectrum signal to the main station.
A data transmission device comprising a memory storing a computer program and a processor implementing the steps of the method described above when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the data transmission method, each signal to be transmitted is received, the number of the signals to be transmitted is determined, the maximum bandwidth of each signal to be transmitted is determined according to the number of the signals to be transmitted, the spread spectrum code sequence of each signal to be transmitted is determined according to the maximum bandwidth, spread spectrum processing is carried out on the signals to be transmitted according to the spread spectrum code sequence to obtain spread spectrum signals, and finally the spread spectrum signals are transmitted to the master station.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments or the conventional technologies of the present application, the drawings used in the descriptions of the embodiments or the conventional technologies will be briefly introduced below, it is obvious that the drawings in the following descriptions are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a data transmission method according to an embodiment;
FIG. 2 is a flowchart illustrating a data transmission method according to another embodiment;
FIG. 3 is a flowchart illustrating a data transmission method according to another embodiment;
FIG. 4 is a flowchart illustrating a data transmission method according to another embodiment;
fig. 5 is a flowchart illustrating a data transmission method according to another embodiment.
Detailed Description
To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that, as used herein, the terms "first," "second," and the like may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another. For example, a first resistance may be referred to as a second resistance, and similarly, a second resistance may be referred to as a first resistance, without departing from the scope of the present application. The first resistance and the second resistance are both resistances, but they are not the same resistance.
It is to be understood that "connection" in the following embodiments is to be understood as "electrical connection", "communication connection", and the like if the connected circuits, modules, units, and the like have communication of electrical signals or data with each other.
As used herein, the singular forms "a", "an" and "the" may include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises/comprising," "includes" or "including," etc., specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. Also, as used in this specification, the term "and/or" includes any and all combinations of the associated listed items.
Fig. 1 is a flowchart illustrating a data transmission method according to an embodiment, and as shown in fig. 1, the data transmission method includes steps S110 to S140.
Step S110, receiving each signal to be transmitted.
The signals to be transmitted can be signals collected by sensors for detecting each device and line in the power system, the number of the signals can be multiple, each sensor can judge whether the device or line is abnormal according to the collected signals, and the signals are output when the device or line is abnormal, so that the received signals to be transmitted are signals of the abnormal device or line, and the data transmission pressure is reduced.
Step S120, determining the number of signals to be transmitted, and determining the maximum bandwidth of each signal to be transmitted according to the number of signals to be transmitted.
It can be understood that when the number of signals to be transmitted is large, the bandwidth needs to be reduced to ensure that each signal to be transmitted can be transmitted to the master station, and the maximum bandwidth is the maximum bandwidth value corresponding to when each signal to be transmitted can be transmitted to the master station through the transmission channel.
Step S130, determining a spreading code sequence of the signal to be transmitted according to the maximum bandwidth, and performing spreading processing on the signal to be transmitted according to the spreading code sequence to obtain a spreading signal.
It can be understood that the maximum bandwidth may correspond to the spreading code sequence one to one, and the bandwidth of the spread spectrum signal obtained through the spreading processing of the spreading code sequence does not exceed the maximum bandwidth.
Step S140, sending the signal to be sent after the spread spectrum processing to the master station.
According to the embodiment of the invention, when the signals to be transmitted are subjected to spread spectrum processing, the maximum bandwidth of each signal to be transmitted is determined according to the number of the signals to be transmitted, so that a spread spectrum code sequence is determined for carrying out spread spectrum processing, the transmission number of the signals to be transmitted is ensured, meanwhile, due to the adoption of spread spectrum transmission, the anti-interference capability of the signals to be transmitted is improved, and the balance between the transmission number of the signals and the anti-interference capability is realized.
In one embodiment, the step of transmitting the spread spectrum signal to the primary station includes steps S241 and S242, as shown in fig. 2.
Step S241, determining a transmission channel of the spread spectrum signal according to the signal to be transmitted.
It can be understood that the number of the transmission channels may include a plurality of transmission channels, and a corresponding relationship between each signal to be transmitted and each transmission channel may be established first, so that when data transmission is performed, the corresponding transmission channel is adopted according to the signal to be transmitted to transmit the spread spectrum signal corresponding to the signal to be transmitted. The spread spectrum signal corresponding to the signal to be transmitted is a spread spectrum signal obtained after the spread spectrum processing is performed on the signal to be transmitted.
Step S242, transmits the spread spectrum signal to the primary station through the transmission channel.
It can be understood that data transmission pressure can be reduced and transmission speed can be increased by adopting a plurality of transmission channels to transmit data to spread spectrum signals, thereby ensuring that data can be transmitted to a master station.
In one embodiment, the step of determining the transmission channel of the spread spectrum signal according to the signal to be transmitted includes steps S3411 to S3412, as shown in fig. 3, where the signal to be transmitted carries the sensor identifier.
Step S3411 determines a transmission level of the spread spectrum signal according to the sensor identification.
It can be understood that the signal to be transmitted carries a sensor identifier, and when the spread spectrum signal is transmitted to the master station, the sensor identifier of the signal to be transmitted corresponding to the spread spectrum signal is identified first, and then the transmission level of the spread spectrum signal is determined accordingly.
In step S3412, a transmission channel is determined according to the transmission class.
The transmission level of the spread spectrum signals may include multiple levels, so that the spread spectrum signals are classified and transmitted by channels. Therefore, the transmission modes of the signals are enriched, different transmission channels can be selected according to the specific situation of the spread spectrum signals, for example, two spread spectrum signals with mutual interference can be subjected to channel division transmission, and the signal-to-noise ratio of the signals is improved.
In one embodiment, the transmission channels may include a high speed channel and a general channel, the transmission level may include a priority level and a normal level, and the determining of the transmission channel according to the transmission level may include steps S3413 and S3414, as shown in fig. 4.
In step S3413, if the transmission level is the priority level, the high speed channel is used as the transmission channel.
It can be understood that which device or line the signal to be transmitted belongs to can be determined according to the sensor identifier carried by the signal to be transmitted, the signal to be transmitted corresponding to the device or line in the power system which is important for the overall operation of the power system can be set as a priority, whether the transmission level of the signal to be transmitted is a priority or a conventional level can be determined according to the sensor identifier of the signal to be transmitted, and if the transmission level is the priority, the spread spectrum signal corresponding to the signal to be transmitted can be transmitted through a high-speed channel.
Step S3414, if the transmission level is the normal level, using the general channel as the transmission channel, wherein the transmission rate of the high speed channel is higher than the transmission rate of the general channel.
It can be understood that, when determining the transmission level of the signal to be transmitted according to the sensor identifier of the signal to be transmitted, if the transmission level is a conventional level, the spread spectrum signal corresponding to the signal to be transmitted may be transmitted by using a common channel. The transmission rate of the high-speed channel is higher than that of the general channel, so that high-speed transmission of key devices and lines in the power system can be realized, and timeliness of key fault information is improved.
Note that fig. 4 is not used to specify the execution order of step S3413 and step S3414, and actually, step S3413 and step S3414 may not be executed in a specific execution order, and may be executed at the same time.
In one embodiment, the data transmission method further includes steps S243 to S245, as shown in fig. 5.
In step S243, a despreading process is performed on the spread signal to obtain a despread signal.
It can be understood that, in order to recover the original signal, the primary station may perform despreading processing on the spread spectrum signal after receiving the spread spectrum signal, and specifically may perform related despreading processing according to the spread spectrum code sequence.
Step S244 determines the signal-to-noise ratio of the spread spectrum signal according to the spread spectrum signal and the despread signal.
And step S245, if the signal-to-noise ratio is lower than a preset signal-to-noise ratio threshold value, outputting an alarm signal.
It can be understood that if the signal-to-noise ratio is smaller than the preset signal-to-noise ratio threshold value, it indicates that the signal-to-noise ratio cannot meet the communication requirement, and at this time, an alarm signal can be output to prompt the staff. When the signal-to-noise ratio is smaller than the preset signal-to-noise ratio threshold, the communication system for transmitting the spread spectrum signal can be adjusted, for example, a base station is reselected, and the signal-to-noise ratio corresponding to the spread spectrum signal is improved, so that the signal quality is improved; or adjusting the transmission power of the base station corresponding to the spread spectrum signal, for example, increasing the transmission power, so as to improve the signal-to-noise ratio, thereby improving the communication quality.
The preset signal-to-noise ratio threshold may be determined according to a historical empirical value, and may be specifically equal to 20Lg (second power historical value/maximum noise limit).
The maximum noise limit may be set manually, and specifically may be determined according to a noise reduction degree of the primary station to the despread signal and/or a noise tolerance degree of the primary station. The primary station can adopt different noise reduction processing methods for different despread signals, so that each despread signal corresponds to a maximum noise limit value. The noise reduction degree of the master station on the despread signals is related to a device or algorithm for performing noise reduction processing on the despread signals by the master station, and can be a power value of noise to be removed, and can be specifically determined according to historical experience values; in addition, in order to avoid the abnormal work of the main station, the noise tolerance degree can be artificially set according to the working characteristics of the main station, and the noise tolerance degree of the main station can be the power value of the maximum noise which can be borne by the main station and can be determined according to an empirical value. The maximum noise limit value can be determined only according to the noise reduction degree, and specifically can be a power value of the noise to be removed; the maximum noise limit value can also be determined only according to the noise tolerance degree of the main station, and specifically can be a power value of the maximum noise which can be borne by the main station; the maximum noise limit value may also be determined according to the noise reduction degree of the master station on the despread signal and the noise tolerance degree of the master station, and specifically may be the smaller of the power value of the noise to be removed and the power value of the maximum noise that the master station can bear.
In one embodiment, determining the signal-to-noise ratio of the spread spectrum signal based on the spread spectrum signal and the despread signal includes obtaining a first power of the spread spectrum signal and a second power of the despread signal, then obtaining a difference between the first power and the second power, and then obtaining the signal-to-noise ratio based on the difference and the second power.
It will be appreciated that the spread and despread signals may each comprise a plurality of samples having a particular amplitude, and the power may each be an average of the square of the magnitude of the samples modulo the amplitude. The difference value of the first power and the second power is noise power, and the ratio of the second power to the noise power is the signal-to-noise ratio.
In one embodiment, determining the spreading code sequence of the signal to be transmitted according to the maximum bandwidth may include determining a spreading factor of the signal to be transmitted according to the maximum bandwidth, and then generating the spreading code sequence according to the spreading factor.
It can be understood that each bit of the signal is multiplied by the spreading factor when spreading, for example, 1bit is required to be transmitted, when the spreading factor is 1, the data 1 is represented by one 1 when transmitting, and when the spreading factor is 6 (there are 6 bits), the data transmitted is 111111, and the 111111 is used to represent 1, so that each bit is multiplied by one 6-bit data, that is, the total data amount required to be transmitted is increased by 6 times. The Spreading Factor (SF) is a serial number of a spreading sequence, which indicates how many bit chips (chips) are used to represent an information symbol, and commonly used spreading sequences may include M sequences, GOLD sequences, WALSH function sequences, and the like.
The embodiment of the invention also provides a data transmission device which comprises a receiving module, a bandwidth determining module, a spread spectrum module and a sending module. The receiving module is used for receiving each signal to be sent; the bandwidth determining module is used for determining the number of signals to be sent and determining the maximum bandwidth of each signal to be sent according to the number of the signals to be sent; the spread spectrum module is used for determining a spread spectrum code sequence of a signal to be transmitted according to the maximum bandwidth and performing spread spectrum processing on the signal to be transmitted according to the spread spectrum code sequence to obtain a spread spectrum signal; the transmitting module is used for transmitting the spread spectrum signal to the master station.
It can be understood that when the number of signals to be transmitted is large, the bandwidth needs to be reduced to ensure that each signal to be transmitted can be transmitted to the master station, and the maximum bandwidth is the maximum bandwidth value corresponding to when each signal to be transmitted can be transmitted to the master station through the transmission channel.
In one embodiment, the sending module is further configured to determine a transmission channel of the spread spectrum signal according to a signal to be sent; and transmits the spread spectrum signal to the primary station through the transmission channel.
It can be understood that the number of the transmission channels may include a plurality of transmission channels, and a corresponding relationship between each signal to be transmitted and each transmission channel may be established first, so that when data transmission is performed, the corresponding transmission channel is adopted according to the signal to be transmitted to transmit the spread spectrum signal corresponding to the signal to be transmitted. The spread spectrum signal corresponding to the signal to be transmitted is a spread spectrum signal obtained after the spread spectrum processing is performed on the signal to be transmitted.
In one embodiment, the signal to be transmitted carries a sensor identifier, and the transmitting module is further configured to determine a transmission level of the spread spectrum signal according to the sensor identifier, and determine a transmission channel according to the transmission level.
In one embodiment, the transmission channel includes a high-speed channel and a general channel, the transmission level includes a priority and a normal level, and the sending module is further configured to use the high-speed channel as the transmission channel if the transmission level is the priority; and if the transmission level is a normal level, using the general channel as a transmission channel, wherein the transmission rate of the high-speed channel is higher than that of the general channel.
In one embodiment, the data transmission device further comprises a despreading module, a signal-to-noise ratio confirming module and an alarm module, wherein the despreading module is used for performing despreading processing on the spread spectrum signal to obtain a despread signal; the signal-to-noise ratio confirmation module is used for determining the signal-to-noise ratio of the spread spectrum signal according to the spread spectrum signal and the de-spread spectrum signal; and if the signal-to-noise ratio is lower than a preset signal-to-noise ratio threshold value, outputting an alarm signal.
In one embodiment, the snr confirming module is further configured to obtain a first power of the spread signal and a second power of the despread signal, obtain a difference between the first power and the second power, and obtain the snr according to the difference and the second power.
In one embodiment, the spreading module is further configured to determine a spreading factor of a signal to be transmitted according to the maximum bandwidth, and then generate a spreading code sequence according to the spreading factor.
The embodiment of the present invention further provides a data transmission device, which includes a memory and a processor, where the memory stores a computer program, and is characterized in that the processor implements the steps of any of the above method embodiments when executing the computer program.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the steps of any of the above-mentioned method embodiments.
In the description herein, references to the description of "some embodiments," "other embodiments," "desired embodiments," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic description of the above terminology may not necessarily refer to the same embodiment or example.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A method of data transmission, comprising:
receiving each signal to be transmitted;
determining the number of signals to be transmitted, and determining the maximum bandwidth of each signal to be transmitted according to the number of the signals to be transmitted;
determining a spreading code sequence of the signal to be transmitted according to the maximum bandwidth, and performing spreading processing on the signal to be transmitted according to the spreading code sequence to obtain a spreading signal;
and transmitting the spread spectrum signal to the primary station.
2. The data transmission method of claim 1, wherein the transmitting the spread spectrum signal to the primary station comprises:
determining a transmission channel of the spread spectrum signal according to the signal to be transmitted;
and transmitting the spread spectrum signal to the master station through the transmission channel.
3. The data transmission method according to claim 2, wherein the signal to be transmitted carries a sensor identifier, and the determining the transmission channel of the spread spectrum signal according to the signal to be transmitted comprises:
determining a transmission level of the spread spectrum signal according to the sensor identification;
and determining the transmission channel according to the transmission level.
4. The data transmission method according to claim 3, wherein the transmission channel includes a high speed channel and a general channel, the transmission level includes a priority level and a normal level, and the determining the transmission channel according to the transmission level includes:
if the transmission level is the priority, taking the high-speed channel as the transmission channel;
and if the transmission level is a normal level, taking the general channel as the transmission channel, wherein the transmission rate of the high-speed channel is higher than that of the general channel.
5. The data transmission method of claim 1, further comprising:
performing despreading processing on the spread spectrum signal to obtain a despread signal;
determining a signal-to-noise ratio of the spread spectrum signal according to the spread spectrum signal and the despread signal;
and if the signal-to-noise ratio is lower than a preset signal-to-noise ratio threshold value, outputting an alarm signal.
6. The data transmission method of claim 5, wherein the determining the signal-to-noise ratio of the spread spectrum signal from the spread spectrum signal and the despread signal comprises:
acquiring a first power of the spread spectrum signal and a second power of the despread signal;
obtaining a difference value between the first power and the second power;
and acquiring the signal-to-noise ratio according to the difference value and the second power.
7. The data transmission method of claim 1, wherein the determining the spreading code sequence of the signal to be transmitted according to the maximum bandwidth comprises:
determining a spreading factor of the signal to be transmitted according to the maximum bandwidth;
generating the spreading code sequence according to the spreading factor.
8. A data transmission apparatus, characterized in that the apparatus comprises:
the receiving module is used for receiving each signal to be sent;
the bandwidth determining module is used for determining the number of signals to be sent and determining the maximum bandwidth of each signal to be sent according to the number of the signals to be sent;
the spread spectrum module is used for determining a spread spectrum code sequence of the signal to be sent according to the maximum bandwidth and performing spread spectrum processing on the signal to be sent according to the spread spectrum code sequence to obtain a spread spectrum signal;
and the transmitting module is used for transmitting the spread spectrum signal to the main station.
9. A data transmission device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299690.1A CN114095056B (en) | 2021-11-04 | 2021-11-04 | Data transmission method, device, equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111299690.1A CN114095056B (en) | 2021-11-04 | 2021-11-04 | Data transmission method, device, equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114095056A true CN114095056A (en) | 2022-02-25 |
| CN114095056B CN114095056B (en) | 2023-07-11 |
Family
ID=80298925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111299690.1A Active CN114095056B (en) | 2021-11-04 | 2021-11-04 | Data transmission method, device, equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114095056B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115865128A (en) * | 2023-02-27 | 2023-03-28 | 北京邮电大学 | Anti-interference method and system applied to wireless communication |
Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020012382A1 (en) * | 1990-11-16 | 2002-01-31 | Schilling Donald L. | Spreard spectrum adaptive power control communications system and method |
| US6532250B1 (en) * | 1999-12-21 | 2003-03-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for spreading and despreading information signals in code division multiple access communications systems |
| US20030219065A1 (en) * | 2002-05-22 | 2003-11-27 | Interdigital Technology Corporation | Data detection for codes with non-uniform spreading factors |
| US20040208234A1 (en) * | 2002-05-22 | 2004-10-21 | Katsuyoshi Naka | Communication terminal device and spread code estimation method |
| CN1787684A (en) * | 2004-12-10 | 2006-06-14 | 大唐移动通信设备有限公司 | Method for dynamic regulating resource based on group service |
| US20090232234A1 (en) * | 2006-07-05 | 2009-09-17 | Koninklijke Philips Electronics N.V. | Bandwidth asymmetric communication system |
| US20090274198A1 (en) * | 2005-12-06 | 2009-11-05 | Nxp B.V. | Determination of active spreading codes and their powers |
| US7643535B1 (en) * | 2006-07-27 | 2010-01-05 | L-3 Communications Titan Corporation | Compatible preparation and detection of preambles of direct sequence spread spectrum (DSSS) and narrow band signals |
| US20100103983A1 (en) * | 2008-10-29 | 2010-04-29 | Yi-Pin Wang | Root spreading code based assignment for hsdpa |
| CN103227819A (en) * | 2013-03-28 | 2013-07-31 | 北京创毅视讯科技有限公司 | Business data transmission method and system, base station and UE in MTC |
| WO2015062669A1 (en) * | 2013-11-01 | 2015-05-07 | Nokia Solutions And Networks Oy | Signal processing |
| CN104718717A (en) * | 2012-10-15 | 2015-06-17 | 高通股份有限公司 | Support for signaling over flexible bandwidth carrier |
| US20160013832A1 (en) * | 2013-03-27 | 2016-01-14 | Huawei Technologies Co., Ltd. | Wireless communications method, user equipment, base station and system |
| CN110071886A (en) * | 2019-05-08 | 2019-07-30 | 哈尔滨海能达科技有限公司 | A kind of signal processing method, relevant device and LoRa wireless system |
| US20200014418A1 (en) * | 2017-03-10 | 2020-01-09 | Huawei Technologies Co., Ltd. | Signal transmission method, signal receiving method, related device, and system |
| CN111600626A (en) * | 2020-05-13 | 2020-08-28 | 北京升哲科技有限公司 | Signal-to-noise ratio estimation method and device, electronic equipment and storage medium |
| CN112804182A (en) * | 2021-04-12 | 2021-05-14 | 中国人民解放军国防科技大学 | Multi-carrier spread spectrum method and communication method and related device applied to same |
-
2021
- 2021-11-04 CN CN202111299690.1A patent/CN114095056B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020012382A1 (en) * | 1990-11-16 | 2002-01-31 | Schilling Donald L. | Spreard spectrum adaptive power control communications system and method |
| US6532250B1 (en) * | 1999-12-21 | 2003-03-11 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and apparatus for spreading and despreading information signals in code division multiple access communications systems |
| US20030219065A1 (en) * | 2002-05-22 | 2003-11-27 | Interdigital Technology Corporation | Data detection for codes with non-uniform spreading factors |
| US20040208234A1 (en) * | 2002-05-22 | 2004-10-21 | Katsuyoshi Naka | Communication terminal device and spread code estimation method |
| CN1787684A (en) * | 2004-12-10 | 2006-06-14 | 大唐移动通信设备有限公司 | Method for dynamic regulating resource based on group service |
| US20090274198A1 (en) * | 2005-12-06 | 2009-11-05 | Nxp B.V. | Determination of active spreading codes and their powers |
| US20090232234A1 (en) * | 2006-07-05 | 2009-09-17 | Koninklijke Philips Electronics N.V. | Bandwidth asymmetric communication system |
| US7643535B1 (en) * | 2006-07-27 | 2010-01-05 | L-3 Communications Titan Corporation | Compatible preparation and detection of preambles of direct sequence spread spectrum (DSSS) and narrow band signals |
| US20100103983A1 (en) * | 2008-10-29 | 2010-04-29 | Yi-Pin Wang | Root spreading code based assignment for hsdpa |
| CN104718717A (en) * | 2012-10-15 | 2015-06-17 | 高通股份有限公司 | Support for signaling over flexible bandwidth carrier |
| US20160013832A1 (en) * | 2013-03-27 | 2016-01-14 | Huawei Technologies Co., Ltd. | Wireless communications method, user equipment, base station and system |
| CN103227819A (en) * | 2013-03-28 | 2013-07-31 | 北京创毅视讯科技有限公司 | Business data transmission method and system, base station and UE in MTC |
| WO2015062669A1 (en) * | 2013-11-01 | 2015-05-07 | Nokia Solutions And Networks Oy | Signal processing |
| US20200014418A1 (en) * | 2017-03-10 | 2020-01-09 | Huawei Technologies Co., Ltd. | Signal transmission method, signal receiving method, related device, and system |
| CN110071886A (en) * | 2019-05-08 | 2019-07-30 | 哈尔滨海能达科技有限公司 | A kind of signal processing method, relevant device and LoRa wireless system |
| CN111600626A (en) * | 2020-05-13 | 2020-08-28 | 北京升哲科技有限公司 | Signal-to-noise ratio estimation method and device, electronic equipment and storage medium |
| CN112804182A (en) * | 2021-04-12 | 2021-05-14 | 中国人民解放军国防科技大学 | Multi-carrier spread spectrum method and communication method and related device applied to same |
Non-Patent Citations (1)
| Title |
|---|
| 李勃,陈启美,沈薇: "跻身未来的电力线通信(五)宽带PLC的扩频技术融入", 电力系统自动化, no. 09 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115865128A (en) * | 2023-02-27 | 2023-03-28 | 北京邮电大学 | Anti-interference method and system applied to wireless communication |
| CN115865128B (en) * | 2023-02-27 | 2023-04-28 | 北京邮电大学 | Anti-interference method and system applied to wireless communication |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114095056B (en) | 2023-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2679949Y (en) | Time-division synchronous code division multichannel access user equipment | |
| US6885649B2 (en) | Method of multiuser detection with user equipment | |
| CA2021539C (en) | Multipoint communication system with retraining of modems | |
| KR100890416B1 (en) | Method and apparatus for estimating channelization codes in a wireless transmit/receive unit | |
| US20060153142A1 (en) | Method and apparatus for multi-user code channel activation detection in wireless communication system | |
| JPH10510121A (en) | Test method and apparatus for digital communication channel | |
| US20010014091A1 (en) | Mobile communication system, base station, mobile communication terminal, and retransmission control method | |
| CN110365365A (en) | A kind of multi-system differential Chaos Shift Keying method based on chaos molding filtration | |
| CN101009539A (en) | Communication system, communication apparatus, and communication quality test method | |
| US8300721B2 (en) | Pseudorandom noise code acquisition in direct sequence spread spectrum systems | |
| CN114095056A (en) | Data transmission method, device, equipment and storage medium | |
| CN101227251A (en) | Apparatus and method for implementing blindness monitoring of channel | |
| SE517358C2 (en) | Ways of detecting a faulty mobile station in a mobile communications network by controlling transmission power | |
| US6360080B1 (en) | Device and method for communicating power control bit pattern according to transmit antenna in mobile communication system | |
| CN113411177B (en) | Signal type detection method, device, equipment and storage medium | |
| EP1022863A2 (en) | Receiver and method for receiving spread spectrum signal by estimating transmitted symbol rate | |
| US20200213062A1 (en) | Wireless communication device, wireless communication method, and wireless communication system | |
| JP4391514B2 (en) | Mixed multiplex transmission / reception apparatus and method in wireless communication system | |
| CN101743712B (en) | Processing transmissions in a wireless communication system | |
| CN101207401B (en) | Apparatus, base station, terminal unit and method for obtaining signal-noise ratio and amplitude-noise ratio | |
| CN101801013B (en) | Method and device for detecting signal | |
| JP3311252B2 (en) | Transmission rate estimating apparatus and variable transmission rate communication system using the same | |
| CN100373836C (en) | Method and device for eliminating interference in parallel | |
| CN111031609A (en) | Channel selection method and device | |
| CN100483962C (en) | Mobile terminal, joint receiver, activated code channel information detection and allocating device and its method |
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 |