CN109688607B - Frequency spectrum data compression method applicable to low-speed wireless network transmission - Google Patents
Frequency spectrum data compression method applicable to low-speed wireless network transmission Download PDFInfo
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- CN109688607B CN109688607B CN201910001916.1A CN201910001916A CN109688607B CN 109688607 B CN109688607 B CN 109688607B CN 201910001916 A CN201910001916 A CN 201910001916A CN 109688607 B CN109688607 B CN 109688607B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Abstract
The invention discloses a frequency spectrum data compression method applicable to low-speed wireless network transmission.A radio frequency spectrum monitoring device takes firstly scanned frequency spectrum data as a default template and sends the frequency spectrum data to a remote client, and continuously performs new frequency spectrum scanning, compares the newly scanned frequency spectrum data with the frequency spectrum data taken as the default template during each scanning, transmits the frequency spectrum data of dynamic data to the remote client in a high-priority mode if the dynamic data appears in the newly scanned frequency spectrum data, the remote client receives complete frequency spectrum data according to the priority and then returns a completion command to the radio frequency spectrum monitoring device, and the radio frequency spectrum monitoring device takes the currently scanned frequency spectrum data as the new default template after receiving the completion command and repeats the process. The method of the invention can realize that all information in the equipment monitoring area is not lost, and can realize the real-time transmission and presentation of the detection data under the network bandwidth with low speed.
Description
Technical Field
The invention relates to the technical field of data compression in the field of radio frequency spectrum monitoring, in particular to a frequency spectrum data compression method applicable to low-speed wireless network transmission.
Background
When a radio spectrum monitoring device is tasked in a field area without conventional public communications, a low-speed communications satellite network is used to transmit data to remote clients, typically at 100Kbps more. If a full-band spectrum of 30MHz to 6000MHz is transmitted once, the data amount is 7.6Mbit, and transmission with satellite communication of 100Kbps requires 77 seconds or more, so that the real-time performance of spectrum scanning becomes poor.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned deficiencies in the prior art, and provides a spectrum data compression method applicable to low-speed wireless network transmission, which can satisfy the transmission of low-speed real-time spectrum data without losing any detection information.
In order to achieve the technical effects, the invention adopts the following technical scheme:
a frequency spectrum data compression method applicable to low-speed wireless network transmission is characterized in that a radio frequency spectrum monitoring device takes first-time scanned frequency spectrum data as a default template and sends the frequency spectrum data to a remote client, new frequency spectrum scanning is continuously carried out during the period of sending the frequency spectrum data as the default template to the remote client, the newly scanned frequency spectrum data is compared with the frequency spectrum data as the default template during each scanning, if dynamic data appear in the newly scanned frequency spectrum data, the frequency spectrum data of the dynamic data is transmitted to the remote client in a high-priority mode, the remote client receives complete frequency spectrum data according to priority and returns a completion command to the radio frequency spectrum monitoring device, and the radio frequency spectrum monitoring device takes the currently scanned frequency spectrum data as a new default template after receiving the completion command and repeats the process;
in the spectrum data compression method applicable to low-speed wireless network transmission, spectrum data and dynamic data are judged by template comparison while spectrum scanning is carried out by spectrum monitoring equipment, a large amount of static data information in the spectrum data is compressed, the static data is transmitted only once after repeated scanning for many times and is presented with low priority, and abnormal data such as the dynamic data is transmitted and presented with high priority, so that real-time information transmission presentation under the transmission bandwidth of a low-speed wireless network (such as a low-speed communication satellite network) can be realized.
Further, the method specifically comprises the following steps:
A. after receiving the frequency spectrum scanning command, the radio frequency spectrum monitoring equipment executes frequency spectrum scanning;
B. the radio frequency spectrum monitoring device takes the spectrum data scanned for the first time as a default template and sends the spectrum data scanned for the first time to a remote client in a low-priority mode, and meanwhile, the following steps are executed;
C. continuously scanning new frequency spectrums by the radio frequency spectrum monitoring equipment, comparing the newly scanned frequency spectrum data with frequency spectrum data serving as a default template, and judging whether dynamic data exist in the newly scanned frequency spectrum data or not;
D. if dynamic data appear in the newly scanned frequency spectrum data, the frequency spectrum data of the dynamic data are sent to a remote client in a high-priority mode;
E. the remote client receives the spectrum data according to the priority, and returns a completion command to the radio spectrum monitoring equipment after the whole section of spectrum data is received each time;
F. and C, after receiving the completion command, the radio frequency spectrum monitoring equipment takes the currently scanned spectrum data as a new default template and sends the new default template to the remote client, and then the step C is returned.
Further, in the step a, specifically, the remote client sends a spectrum scanning command including scanning parameters to the radio spectrum monitoring device, that is, before starting to perform spectrum scanning, the remote client sets relevant scanning parameters and sends the scanning parameters to the radio spectrum monitoring device, and the radio spectrum monitoring device performs spectrum scanning after receiving the spectrum scanning command including scanning parameters.
Further, the scanning parameters at least include a trigger threshold, the trigger threshold is to be used as a criterion for determining subsequent dynamic data, the trigger threshold can be set by a user according to specific requirements, and the setting principle is that on the premise of ensuring that the monitoring system has expected sensitivity, the small signals can be effectively identified and the noise level can be filtered out as much as possible, so the trigger threshold is usually about 3-5dB, for example, when the maximum noise level of a certain frequency band is-125 dBm, if the trigger threshold is set to 5dB, the signal is determined as a dynamic signal when the signal is greater than-120 dBm.
Further, the scanning parameters further include a working frequency band parameter and a scanning stepping parameter, wherein the working frequency band parameter is a frequency band range for setting frequency band scanning of the monitoring receiver, the working frequency band parameter can be set according to the service frequency band range, and the scanning stepping parameter is used for adjusting frequency intervals between adjacent frequency points, and can be specifically set by combining with requirements of monitoring the channel bandwidth of the service and monitoring sensitivity.
Further, the method for determining the dynamic data in step C is as follows:
and the radio frequency spectrum monitoring equipment subtracts the frequency point level value of each frequency point of the newly scanned frequency spectrum data from the frequency point level value of the frequency spectrum data of the default template at the corresponding frequency point, judges whether the absolute value of the difference exceeds the received trigger threshold value, and if the absolute value exceeds the trigger threshold value, the newly scanned frequency spectrum data of the frequency point is judged to be the frequency spectrum data of the dynamic data.
Further, the step E further includes displaying, by the remote client, the received spectrum data according to the priority. Specifically, the priority implementation mode may be implemented by adopting a variety of technical solutions in the prior art, and as a preferred solution, when the radio spectrum monitoring device sends scanned spectrum data to the remote client, the spectrum data is first packaged, and a data packet including a frame header, a dynamic data flag or a static data flag, a frequency point position value, spectrum data, and a frame end flag is generated, so that when the remote client reads data through a network, whether high priority display is performed or not is determined by judging whether the dynamic data flag is provided, and if the dynamic data flag exists, high priority transmission and client presentation are performed on the spectrum receipt.
Compared with the prior art, the invention has the following beneficial effects:
by adopting the frequency spectrum data compression method applicable to low-speed wireless network transmission, a large amount of static data information in frequency spectrum data is compressed, the static data is transmitted only once after repeated scanning for many times and presented at low priority, and the dynamic data is transmitted at high priority and presented at a client, so that all information in a monitoring area of equipment is not lost, and the detection data is transmitted and presented in real time under low-speed network bandwidth.
Drawings
Fig. 1 is a schematic diagram of a spectrum data compression method applicable to low-speed wireless network transmission according to the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments of the invention described hereinafter.
Example (b):
as shown in fig. 1, a method for compressing spectrum data applicable to low-speed wireless network transmission mainly includes: the radio frequency spectrum monitoring equipment takes the first scanned frequency spectrum data as a default template and sends the default template to a remote client, new frequency spectrum scanning is continuously carried out during the period of sending the frequency spectrum data as the default template to the remote client, the newly scanned frequency spectrum data is compared with the frequency spectrum data as the default template during each scanning, if dynamic data appears in the newly scanned frequency spectrum data, the frequency spectrum data of the dynamic data is transmitted to the remote client in a high-priority mode, the remote client receives the complete frequency spectrum data according to the priority and then returns a completion command to the radio frequency spectrum monitoring equipment, and after receiving the completion command, the radio frequency spectrum monitoring equipment takes the currently scanned frequency spectrum data as the new default template and repeats the process.
Specifically, the implementation of the method in this embodiment specifically includes the following steps:
A. sending a spectrum scanning command containing scanning parameters to the radio spectrum monitoring equipment by a remote client, and executing spectrum scanning after the radio spectrum monitoring equipment receives the spectrum scanning command;
specifically, the scanning parameters in this embodiment include a working frequency band parameter, a scanning step parameter, a trigger threshold, and the like, where the trigger threshold is to be used as a criterion for subsequent dynamic data, and the trigger threshold may be set by a user according to specific requirements, and in this embodiment, the trigger threshold is set to be 5dB, the working frequency band parameter is set to be 30MHz-6000MHz, and the scanning step parameter is set to be 25 KHz.
B. The radio frequency spectrum monitoring device takes the spectrum data scanned for the first time as a default template and sends the spectrum data scanned for the first time to a remote client in a low-priority mode, and meanwhile, the following steps are executed;
specifically, the implementation manner of the priority related in this embodiment can be implemented by adopting various technical solutions in the prior art, and preferably, the implementation manner in this embodiment is implemented by adopting the following manner: when the radio frequency spectrum monitoring equipment sends scanned frequency spectrum data to a remote client, firstly, the frequency spectrum data is packaged, and a data packet comprising a frame header, a dynamic data mark or a static data mark (the static data mark is selected for the frequency spectrum data sent for the first time), a frequency point position value, the frequency spectrum data and a frame tail end mark is generated, so that when the remote client reads the frequency spectrum data through a network, the priority of the frequency spectrum data can be determined by judging whether the frequency spectrum data has the dynamic data mark, and if the frequency spectrum data has the dynamic data mark, the priority is high.
C. Continuously scanning new frequency spectrums by the radio frequency spectrum monitoring equipment, comparing the newly scanned frequency spectrum data with frequency spectrum data serving as a default template, and judging whether dynamic data exist in the newly scanned frequency spectrum data or not;
specifically, in this embodiment, the method for determining whether dynamic data exists includes:
and the radio frequency spectrum monitoring equipment subtracts the frequency point level value of each frequency point of the newly scanned frequency spectrum data from the frequency point level value of the frequency spectrum data of the default template at the corresponding frequency point, judges whether the absolute value of the difference exceeds the received trigger threshold value, and if the absolute value exceeds the trigger threshold value, the newly scanned frequency point frequency spectrum data is judged to be the frequency spectrum data of the dynamic data.
D. If dynamic data appear in the newly scanned frequency spectrum data, the frequency spectrum data of the dynamic data are sent to a remote client in a high-priority mode;
E. the remote client receives the spectrum data according to the priority and displays the spectrum data according to the priority, and a completion command is returned to the radio spectrum monitoring equipment after the whole section of spectrum data is received each time; like the processing manner in step B, in this embodiment, the remote client can determine the priority by determining whether the read spectrum data includes the dynamic data flag.
F. And C, after receiving the completion command, the radio frequency spectrum monitoring equipment takes the currently scanned spectrum data as a new default template and sends the new default template to the remote client, and then the step C is returned to, and the steps are repeated.
In the spectrum data compression method applicable to low-speed wireless network transmission, spectrum data and dynamic data are judged by template comparison while spectrum scanning is carried out by spectrum monitoring equipment, a large amount of static data information in the spectrum data is compressed, the static data is transmitted only once after repeated scanning for many times and is presented with low priority, and abnormal data such as the dynamic data is transmitted and presented with high priority, so that real-time information transmission presentation under the transmission bandwidth of a low-speed wireless network (such as a low-speed communication satellite network) can be realized.
Therefore, the frequency spectrum data compression method applicable to low-speed wireless network transmission can realize that all information in a monitoring area of equipment is not lost, and can realize real-time transmission and presentation of detection data under low-speed network bandwidth.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (6)
1. A spectrum data compression method applicable to low-speed wireless network transmission is characterized in that a radio spectrum monitoring device takes first-time scanned spectrum data as a default template and sends the first-time scanned spectrum data to a remote client, new spectrum scanning is continuously carried out during the period of sending the spectrum data as the default template to the remote client, the newly scanned spectrum data and the spectrum data as the default template are compared during each scanning, if dynamic data appear in the newly scanned spectrum data, the spectrum data of the dynamic data are transmitted to the remote client in a high-priority mode, the remote client receives complete spectrum data according to the priority and returns a completion command to the radio spectrum monitoring device, the radio spectrum monitoring device takes the currently scanned spectrum data as the new default template after receiving the completion command and repeats the procedures, the method specifically comprises the following steps:
A. after receiving the frequency spectrum scanning command, the radio frequency spectrum monitoring equipment executes frequency spectrum scanning;
B. the radio frequency spectrum monitoring device takes the spectrum data scanned for the first time as a default template and sends the spectrum data scanned for the first time to a remote client in a low-priority mode, and meanwhile, the following steps are executed;
C. continuously scanning new frequency spectrums by the radio frequency spectrum monitoring equipment, comparing the newly scanned frequency spectrum data with frequency spectrum data serving as a default template, and judging whether dynamic data exist in the newly scanned frequency spectrum data or not;
D. if dynamic data appear in the newly scanned frequency spectrum data, the frequency spectrum data of the dynamic data are sent to a remote client in a high-priority mode;
E. the remote client receives the spectrum data according to the priority, and returns a completion command to the radio spectrum monitoring equipment after the whole section of spectrum data is received each time;
F. and C, after receiving the completion command, the radio frequency spectrum monitoring equipment takes the currently scanned spectrum data as a new default template and sends the new default template to the remote client, and then the step C is returned.
2. The method as claimed in claim 1, wherein the step a is executed by the remote client sending a spectrum scanning command containing scanning parameters to the radio spectrum monitoring device.
3. A method for compressing spectrum data applicable to low speed wireless network transmissions according to claim 2, wherein said scan parameter comprises at least a trigger threshold.
4. The method as claimed in claim 3, wherein the scan parameters further include an operating band parameter and a scan step parameter.
5. The method as claimed in claim 3, wherein the method for determining dynamic data in step C is as follows:
and the radio frequency spectrum monitoring equipment subtracts the frequency point level value of each frequency point of the newly scanned frequency spectrum data from the frequency point level value of the frequency spectrum data of the default template at the corresponding frequency point, judges whether the absolute value of the difference exceeds the received trigger threshold value, and if the absolute value exceeds the trigger threshold value, the frequency spectrum data of the frequency point is judged to be the frequency spectrum data of the dynamic data.
6. The method as claimed in claim 1, wherein step E further comprises displaying the received spectrum data by the remote client according to priority.
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