CN116600381A - Multi-channel parallel generation system and method for broadcast signals - Google Patents
Multi-channel parallel generation system and method for broadcast signals Download PDFInfo
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 claims abstract description 12
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 238000012545 processing Methods 0.000 claims description 10
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
- H04W56/004—Synchronisation arrangements compensating for timing error of reception due to propagation delay
- H04W56/005—Synchronisation arrangements compensating for timing error of reception due to propagation delay compensating for timing error by adjustment in the receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
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- 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
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Abstract
The invention relates to the field of broadcast communication, and discloses a system and a method for generating multiple paths of broadcast signals in parallel, wherein the system comprises the following steps: the signal distributor obtains the transmission delay difference value of the standard signal transmission line and each parallel transmission line according to the test signal; when the broadcast signal is transmitted, the transmission delay of the standard signal transmission line is obtained through the delay monitoring module, and the correction transmission delay of each parallel transmission line is obtained; and the broadcasting signals are distributed to each parallel transmission line through the signal distributor, if the time delay difference value of each parallel transmission line is within the set time delay difference value threshold value range, the synchronous broadcasting condition of the broadcasting signals is met, whether the broadcasting signals of each parallel transmission line are abnormal or not is verified, and the multipath parallel generation of the broadcasting signals is completed. By the technical scheme provided by the invention, the signal receivers of all parallel lines can output the same signals at the same time, and the terminal can be ensured to receive the consistent signals.
Description
Technical Field
The invention relates to the field of broadcast communication, in particular to a system and a method for generating multiple paths of broadcast signals in parallel.
Background
In a wireless communication system, multiple parallel synchronous generation of broadcast signals is a key technology. The conventional broadcast signal generation method generally adopts a serial processing manner, that is, each path of broadcast signal is generated one by one, and the method is easy to have the problem of different delays when the number of signals increases.
In the past studies, some broadcast signal generation methods based on parallel processing have been proposed. One of the methods is to divide a broadcast signal generation task into a plurality of sub-tasks and process them in parallel by a plurality of processing units. However, this approach has some limitations, such as requiring additional hardware resources and complex synchronization mechanisms. Another approach is to utilize existing multi-core processors and use threads or processes for parallel processing. However, this approach also has difficulty in keeping the signals received by the terminals consistent across different transmission lines due to synchronization overhead and data interaction problems between different threads or processes.
Therefore, how to ensure that the terminal receiving apparatuses of the respective lines can receive the same content at the same time in different transmission lines is a subject to be studied by those skilled in the current industry.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multipath parallel generation method of broadcast signals, which comprises the following steps:
step one, a signal distributor tests and obtains standard transmission delay of a standard signal transmission line according to a test signal; the signal distributor tests the multipath parallel transmission lines respectively to obtain the transmission delay of each parallel transmission line, and obtains the transmission delay difference value of the standard signal transmission line and each parallel transmission line according to the standard transmission delay;
step two, when broadcast signals are transmitted, the transmission delay of a standard signal transmission line is obtained through a delay monitoring module, and the transmission delay difference of each parallel transmission line is corrected through the transmission delay of the standard signal transmission line and the standard transmission delay difference, so that the corrected transmission delay of each parallel transmission line is obtained;
step three, broadcasting signals are distributed to all parallel transmission lines through a signal distributor, signals are sent according to correction transmission delay of all the parallel transmission lines, signal receivers of all the parallel lines receive the broadcasting signals and are respectively compared with broadcasting signals of standard lines to respectively obtain delay differences when all the parallel lines receive the broadcasting signals, if the delay differences of all the parallel lines are within a set delay difference threshold value range, the synchronous broadcasting condition of the broadcasting signals is met, and step five is entered; if the delay difference value of the parallel transmission line is not within the set delay difference value threshold value range, entering a step four;
step four, positioning the parallel transmission lines with the corrected delay difference value not within the set delay difference value threshold range, marking the parallel transmission lines as delay parallel transmission lines, if the delay difference value of the delay parallel transmission lines is larger than zero, filling the rest parallel transmission lines into a buffer area until the broadcast signals of the delay parallel transmission lines meet synchronous broadcasting conditions, and entering a step five; if the delay difference value of the delay parallel transmission lines is smaller than zero, the delay parallel transmission lines enter a buffer area for filling until each parallel transmission line meets the synchronous broadcasting condition of the broadcast signals, and then enter a step five;
and fifthly, verifying whether the broadcast signals of the parallel transmission lines are abnormal, if the broadcast signals of the parallel transmission lines are abnormal, performing fault elimination on the abnormal parallel transmission lines, and after the fault elimination, synchronously outputting the broadcast signals by the signal receivers of the parallel transmission lines, thereby completing multipath parallel generation of the broadcast signals.
Further, the correction transmission delay of the parallel transmission line adopts the following formula:
。
further, the broadcast signal is distributed to each parallel transmission line by a signal distributor, and the broadcast signal is transmitted according to the corrected transmission delay of each parallel transmission line, comprising: and transmitting broadcast signals by the parallel transmission lines before the time length of the correction transmission delay of the standard transmission lines according to the obtained correction transmission delay of each parallel transmission line.
Further, the parallel transmission line satisfies the synchronous broadcasting condition of the broadcasting signal: the signal receivers of the respective parallel transmission lines can transmit the same broadcast signal at the same time.
The system for generating the broadcast signals in a multipath parallel manner comprises a signal distributor, a signal receiver, a signal abnormality detection module, a time delay monitoring module, a buffer management module and a data processing module;
the signal distributor, the signal receiver, the signal abnormality detection module, the time delay monitoring module and the buffer management module are respectively connected with the data processing module.
The beneficial effects of the invention are as follows: by the technical scheme provided by the invention, the generation of the broadcast signals transmitted in parallel can be realized, the signal receivers of all parallel lines can output the same signals at the same time, and the terminal receiving equipment of all the transmission lines can receive the consistent signals.
Drawings
Fig. 1 is a flow diagram of a method for generating multiple paths of broadcast signals in parallel;
fig. 2 is a schematic diagram of a system for generating multiple channels of broadcast signals in parallel.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
For the purpose of making the technical solution and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not intended to limit the invention, i.e., the embodiments described are merely some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
The features and capabilities of the present invention are described in further detail below in connection with the examples.
As shown in fig. 1, the method for generating multiple paths of broadcast signals in parallel includes the following steps:
step one, a signal distributor tests and obtains standard transmission delay of a standard signal transmission line according to a test signal; the signal distributor tests the multipath parallel transmission lines respectively to obtain the transmission delay of each parallel transmission line, and obtains the transmission delay difference value of the standard signal transmission line and each parallel transmission line according to the standard transmission delay;
step two, when broadcast signals are transmitted, the transmission delay of a standard signal transmission line is obtained through a delay monitoring module, and the transmission delay difference of each parallel transmission line is corrected through the transmission delay of the standard signal transmission line and the standard transmission delay difference, so that the corrected transmission delay of each parallel transmission line is obtained;
step three, broadcasting signals are distributed to all parallel transmission lines through a signal distributor, signals are sent according to correction transmission delay of all the parallel transmission lines, signal receivers of all the parallel lines receive the broadcasting signals and are respectively compared with broadcasting signals of standard lines to respectively obtain delay differences when all the parallel lines receive the broadcasting signals, if the delay differences of all the parallel lines are within a set delay difference threshold value range, the synchronous broadcasting condition of the broadcasting signals is met, and step five is entered; if the delay difference value of the parallel transmission line is not within the set delay difference value threshold value range, entering a step four;
step four, positioning the parallel transmission lines with the corrected delay difference value not within the set delay difference value threshold range, marking the parallel transmission lines as delay parallel transmission lines, if the delay difference value of the delay parallel transmission lines is larger than zero, filling the rest parallel transmission lines into a buffer area until the broadcast signals of the delay parallel transmission lines meet synchronous broadcasting conditions, and entering a step five; if the delay difference value of the delay parallel transmission lines is smaller than zero, the delay parallel transmission lines enter a buffer area for filling until each parallel transmission line meets the synchronous broadcasting condition of the broadcast signals, and then enter a step five;
and fifthly, verifying whether the broadcast signals of the parallel transmission lines are abnormal, if the broadcast signals of the parallel transmission lines are abnormal, performing fault elimination on the abnormal parallel transmission lines, and after the fault elimination, synchronously outputting the broadcast signals by the signal receivers of the parallel transmission lines, thereby completing multipath parallel generation of the broadcast signals.
Wherein verifying whether the broadcast signal of each parallel transmission line is abnormal, if there is an abnormality in the broadcast signal of the parallel transmission line, performing fault removal on the abnormal parallel transmission line, comprising:
s1, acquiring a standard signal transmission line node and node signal and a parallel transmission line node and node signal corresponding to the standard signal transmission line node; comparing the node signals of the standard signal transmission line nodes with the node signals of the parallel transmission line nodes in a signal consistency manner, and judging whether the node signals are consistent; if the node signals are inconsistent, S2 is entered;
s2, carrying out peer node cross verification on the node with inconsistent signals, carrying out signal consistency comparison on the parallel transmission line node in the peer node and the node at the upper stage of the standard signal transmission line node, judging that the standard signal transmission line is faulty if the signal consistency is consistent, and switching the standard signal transmission line number into the parallel transmission line signal with the minimum correction delay; if the signal contrast is inconsistent, judging that the parallel transmission line fails, and switching the parallel transmission line signal into a standard signal transmission line signal;
the step of comparing the signal consistency of the node signal of the standard signal transmission line node with the node signal of the parallel transmission line node to judge whether the node signal is consistent, includes:
and (3) firstly, carrying out correlation signal comparison, respectively carrying out coincidence comparison on the node signals of the same line node and the parallel transmission line, carrying out coincidence comparison on the node signals of the same line node and the node signals of the node at the upper stage, if the node signals are coincident, carrying out the coincidence comparison on the node signals of the same level, carrying out coincidence comparison on the node signals of the standard signal transmission line node and the node signals of the parallel transmission line node corresponding to the standard signal transmission line node, if the node signals are not coincident, entering S2, otherwise, carrying out fault on the line.
The node signal consistency comparison includes: image consistency contrast and audio consistency contrast, wherein the image consistency contrast comprises the steps of partitioning node signal images, respectively carrying out consistency contrast on each region, carrying out audio contrast if the image contrast of each partition is consistent, and carrying out node signal contrast if the image contrast of each partition is consistent.
The correction transmission delay of the parallel transmission line adopts the following formula:
。
the broadcast signal is distributed to each parallel transmission line through a signal distributor, and signals are transmitted according to the corrected transmission delay of each parallel transmission line, comprising: and transmitting broadcast signals by the parallel transmission lines before the time length of the correction transmission delay of the standard transmission lines according to the obtained correction transmission delay of each parallel transmission line.
The parallel transmission line meets the synchronous broadcasting condition of the broadcasting signal as follows: the signal receivers of the respective parallel transmission lines can transmit the same broadcast signal at the same time.
As shown in fig. 2, the system for generating broadcast signals in multiple paths in parallel applies the method for generating broadcast signals in multiple paths in parallel, and the system comprises a signal distributor, a signal receiver, a signal anomaly detection module, a time delay monitoring module, a buffer management module and a data processing module;
the signal distributor, the signal receiver, the signal abnormality detection module, the time delay monitoring module and the buffer management module are respectively connected with the data processing module.
The signal distributor is used for transmitting broadcast signals according to the correction transmission delay of each parallel transmission line;
the signal receiver receives the broadcast signal transmitted by the transmission line;
the signal abnormality detection module is used for respectively comparing the broadcast signals received by the signal receivers of the parallel lines with the broadcast signals of the standard lines to respectively obtain time delay difference values when the broadcast signals are received by the parallel lines, and judging whether broadcasting conditions are met or not;
the time delay monitoring module is used for collecting signal transmission time delay of each parallel transmission line;
the buffer management module is used for buffering the signal data of the parallel transmission line according to the time delay difference value of the delayed parallel transmission line.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (5)
1. The multipath parallel generation method of the broadcast signal is characterized by comprising the following steps:
step one, a signal distributor tests and obtains standard transmission delay of a standard signal transmission line according to a test signal; the signal distributor tests the multipath parallel transmission lines respectively to obtain the transmission delay of each parallel transmission line, and obtains the transmission delay difference value of the standard signal transmission line and each parallel transmission line according to the standard transmission delay;
step two, when broadcast signals are transmitted, the transmission delay of a standard signal transmission line is obtained through a delay monitoring module, and the transmission delay difference of each parallel transmission line is corrected through the transmission delay of the standard signal transmission line and the standard transmission delay difference, so that the corrected transmission delay of each parallel transmission line is obtained;
step three, broadcasting signals are distributed to all parallel transmission lines through a signal distributor, signals are sent according to correction transmission delay of all the parallel transmission lines, signal receivers of all the parallel lines receive the broadcasting signals and are respectively compared with broadcasting signals of standard lines to respectively obtain delay differences when all the parallel lines receive the broadcasting signals, if the delay differences of all the parallel lines are within a set delay difference threshold value range, the synchronous broadcasting condition of the broadcasting signals is met, and step five is entered; if the delay difference value of the parallel transmission line is not within the set delay difference value threshold value range, entering a step four;
step four, positioning the parallel transmission lines with the corrected delay difference value not within the set delay difference value threshold range, marking the parallel transmission lines as delay parallel transmission lines, if the delay difference value of the delay parallel transmission lines is larger than zero, filling the rest parallel transmission lines into a buffer area until the broadcast signals of the delay parallel transmission lines meet synchronous broadcasting conditions, and entering a step five; if the delay difference value of the delay parallel transmission lines is smaller than zero, the delay parallel transmission lines enter a buffer area for filling until each parallel transmission line meets the synchronous broadcasting condition of the broadcast signals, and then enter a step five;
and fifthly, verifying whether the broadcast signals of the parallel transmission lines are abnormal, if the broadcast signals of the parallel transmission lines are abnormal, performing fault elimination on the abnormal parallel transmission lines, and after the fault elimination, synchronously outputting the broadcast signals by the signal receivers of the parallel transmission lines, thereby completing multipath parallel generation of the broadcast signals.
2. The multi-path parallel generation method of a broadcast signal according to claim 1, wherein the corrected transmission delay of the parallel transmission line adopts the following formula:
。
3. the multi-path parallel generation method of a broadcast signal according to claim 2, wherein the broadcast signal is distributed to each parallel transmission line by a signal distributor, and the signal is transmitted according to a corrected transmission delay of each parallel transmission line, comprising: and transmitting broadcast signals by the parallel transmission lines before the time length of the correction transmission delay of the standard transmission lines according to the obtained correction transmission delay of each parallel transmission line.
4. A method for generating multiple broadcast signals in parallel according to claim 3, wherein said parallel transmission line satisfies a broadcast signal synchronous broadcast condition as follows: the signal receivers of the respective parallel transmission lines can transmit the same broadcast signal at the same time.
5. The multi-channel parallel generation system of the broadcast signals is characterized by comprising a signal distributor, a signal receiver, a signal abnormality detection module, a time delay monitoring module, a buffer management module and a data processing module, wherein the multi-channel parallel generation method of the broadcast signals is applied to any one of claims 1-4;
the signal distributor, the signal receiver, the signal abnormality detection module, the time delay monitoring module and the buffer management module are respectively connected with the data processing module.
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