CN111162857A - Data packet receiving method and device and frequency modulation emergency broadcasting system - Google Patents
Data packet receiving method and device and frequency modulation emergency broadcasting system Download PDFInfo
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- CN111162857A CN111162857A CN201911343416.2A CN201911343416A CN111162857A CN 111162857 A CN111162857 A CN 111162857A CN 201911343416 A CN201911343416 A CN 201911343416A CN 111162857 A CN111162857 A CN 111162857A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
- H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/44—Arrangements characterised by circuits or components specially adapted for broadcast
- H04H20/46—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95
- H04H20/47—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems
- H04H20/48—Arrangements characterised by circuits or components specially adapted for broadcast specially adapted for broadcast systems covered by groups H04H20/53-H04H20/95 specially adapted for stereophonic broadcast systems for FM stereophonic broadcast systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0041—Arrangements at the transmitter end
- H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/10—Integrity
- H04W12/106—Packet or message integrity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
Abstract
The application provides a data packet receiving method and device and a frequency modulation emergency broadcasting system. The method comprises the following steps: receiving a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks; when the received target small block is an error small block, recording the number of the error small block, and when the target data packet is received next time, receiving the target small block with the same number as the error small block. Compared with the prior art, the serial number of each error small block is recorded, when a data packet sent by the broadcast transmitting station is received next time, only the target small block with the same serial number as the error small block needs to be received, the whole data packet does not need to be received again, and the repeated receiving of data is avoided to a great extent. Meanwhile, the frequency modulation receiving performance is improved, and the receiving threshold is reduced.
Description
Technical Field
The application relates to the technical field of emergency broadcasting, in particular to a data packet receiving method and device and a frequency modulation emergency broadcasting system.
Background
The emergency broadcast is a broadcast mode for releasing emergency events to the public by using an emergency broadcast platform. At present, an emergency broadcast platform transmits an emergency event to terminal equipment in a data packet mode, but the length of the data packet is long at present, and the terminal equipment can complete data verification of the whole data packet only by receiving a complete data packet without errors. When the signal is slightly below the receive threshold (i.e., the terminal device signal is poor), the entire packet may be invalidated even if a small number of errors or losses occur in the received packet. When the data packet is invalid, the terminal device must receive the complete data packet again.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method and an apparatus for receiving a data packet, and a fm emergency broadcast system, so as to improve the above-mentioned "when a signal is slightly lower than a receiving threshold (i.e. when a signal of a terminal device is poor)," even if a small amount of errors or losses occur in a received data packet, the entire data packet is invalid. When the data packet is invalid, the terminal device must receive the complete data packet again. "is used in the above-mentioned patent publication.
The purpose of the invention is realized as follows:
the embodiment of the application provides a receiving method of a data packet, which is applied to terminal equipment in a frequency modulation emergency broadcast system, wherein the frequency modulation emergency broadcast system further comprises a broadcast transmitting station, the broadcast transmitting station is used for transmitting the data packet to the terminal equipment, each data packet is divided into a plurality of small blocks for transmission when being transmitted, each small block contains a serial number, and the method comprises the following steps: receiving a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks; when the received target small block is an error small block, recording the number of the error small block, and when the target data packet is received next time, receiving the target small block with the same number as the error small block.
Compared with the prior art, the serial number of each error small block is recorded, when a data packet sent by the broadcast transmitting station is received next time, only the target small block with the same serial number as the error small block needs to be received, the whole data packet does not need to be received again, and the repeated receiving of data is avoided to a great extent. Meanwhile, the frequency modulation receiving performance is improved, and the receiving threshold is reduced.
With reference to the technical solution provided in the above object aspect, in some possible implementations, after receiving the target data packet sent by the broadcast transmitting station, the method further includes: and when the target small block is received to be the correct small block, analyzing the correct small block until all the target small blocks in the target data packet are successfully analyzed.
With reference to the technical solution provided by the above objective aspect, in some possible implementation manners, after the target small blocks in the target data packet are successfully analyzed, the method further includes playing an emergency broadcast obtained by analyzing the target data packet.
With reference to the technical solution provided by the above objective aspect, in some possible implementations, the receiving the target small block with the same number as the error small block when the target data packet is received next time includes: when the target data packet is received next time, judging whether the target small block with the same number as the error small block is a correct small block; and if so, receiving the target small block with the same number as the error small block.
In the application, when a target data packet is received next time, whether a target small block with the same number as an error small block is a correct small block is judged; if yes, receiving the target small block with the same number as the error small block, and avoiding repeated receiving of the error small block.
In combination with the technical solution provided by the above object aspect, in some possible implementations, the data packet includes data content and a digital signature.
In some possible implementations, the data packet is an RDS data packet, each data packet is divided into a plurality of frames during transmission, and each frame is divided into 4 small blocks.
In a second aspect, an embodiment of the present application provides a device for receiving a data packet, where the device is applied to a terminal device in a fm emergency broadcast system, the fm emergency broadcast system further includes a broadcast transmitting station, the broadcast transmitting station is configured to transmit the data packet to the terminal device, each data packet is divided into a plurality of small blocks for transmission when being transmitted, and each small block includes a serial number, and the device includes: a receiving module, configured to receive a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks; and the recovery module is used for recording the number of the error small block when the target small block is received as the error small block, and receiving the target small block with the same number as the error small block when the target data packet is received next time.
With reference to the technical solution provided by the second aspect, in some possible implementations, the apparatus further includes: an analysis module; the analysis module is used for analyzing the correct small blocks after receiving the target data packets sent by the emergency platform and when the target small blocks are received to be correct small blocks, until all the target small blocks in the target data packets are successfully analyzed.
In a third aspect, an embodiment of the present application provides a frequency modulation emergency broadcast system, including an emergency broadcast platform, a broadcast transmitting station, and a terminal device; the emergency broadcast platform is in communication connection with the broadcast transmitting station, the emergency broadcast platform is used for sending emergency broadcast to the broadcast transmitting station, and the broadcast transmitting station is used for generating a data packet from the emergency broadcast and transmitting the data packet to the terminal equipment in a wireless mode.
With reference to the technical solution provided by the third aspect, in some possible implementations, the broadcast transmitting station includes an adapter, an RDS encoding controller, and a frequency modulation transmitter; the adapter is in communication connection with the emergency broadcast platform; the RDS coding controller is respectively connected with the adapter and the frequency modulation transmitter, and the adapter is used for receiving emergency broadcast of the emergency broadcast platform and sending the emergency broadcast to the RDS coding controller; the RDS coding controller is used for generating an RDS data packet according to the emergency broadcast and sending the RDS data packet to the frequency modulation transmitter; and the frequency modulation transmitter is used for transmitting the RDS data packet to the terminal equipment through wireless.
In a fourth aspect, an embodiment of the present application provides a terminal device, including: the processor is connected with the memory and the communication module respectively; the memory is used for storing programs; the communication module is used for being in communication connection with a broadcast transmitting station; the processor is configured to invoke a program stored in the memory, and to perform a method as provided in the foregoing first aspect embodiment and/or in combination with some possible implementations of the foregoing first aspect embodiment; the communication module is used for being in communication connection with the emergency broadcast platform.
In a fifth aspect, embodiments of the present application provide a storage medium having stored thereon a computer program, which, when executed by a processor, performs a method as provided in the embodiments of the first aspect described above and/or in connection with some possible implementations of the embodiments of the first aspect described above.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a frequency modulation emergency broadcasting system according to an embodiment of the present application.
Fig. 2 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Fig. 3 is a flowchart illustrating steps of a method for receiving a data packet according to an embodiment of the present application.
Fig. 4 is a block diagram of a receiving device for a data packet according to an embodiment of the present disclosure.
Icon: 100-frequency modulation emergency broadcasting system; 110-emergency broadcast platform; 120-a broadcast transmitting station; 121-an adapter; 122-RDS encoding controller; 123-a frequency modulated transmitter; 130-terminal device; 131-a processor; 132-a memory; 133-a communication module; 134-a communication bus; 200-a receiving device of data packets; 201-a receiving module; 202-a recovery module; 203-a parsing module; 204-playing module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
At present, an emergency broadcast platform transmits an emergency event to terminal equipment in a data packet mode, but the length of the data packet is long at present, and the terminal equipment can complete data verification of the whole data packet only by receiving a complete data packet without errors. When the signal is slightly below the receive threshold (i.e., the terminal device signal is poor), the entire packet may be invalidated even if a small number of errors or losses occur in the received packet. When the data packet is invalid, the terminal device must receive the complete data packet again.
In view of the above problems, the present inventors have studied and researched to provide the following embodiments to solve the above problems.
Referring to fig. 1, an fm emergency broadcasting system 100 according to an embodiment of the present invention includes an emergency broadcasting platform 110, a broadcast transmitting station 120, and a terminal device 130.
Wherein the emergency broadcast platform 110 is communicatively coupled to the broadcast transmitting station 120. The emergency broadcast platform 110 is configured to send an emergency broadcast to the broadcast transmitting station 120. The broadcast transmitting station 120 is configured to generate a data packet according to the emergency broadcast, and transmit the data packet to the terminal device 130 by wireless. Note that, the broadcast transmitting station 120 and the terminal device 130 are unidirectional transmission.
Optionally, broadcast transmitting station 120 includes an adapter 121, an RDS encoding controller 122, and a frequency modulated transmitter 123. The adapter 121 is communicatively coupled to the emergency broadcast platform 110. The RDS encoding controller 122 is connected to the adapter 121 and the frequency modulation transmitter 123, respectively. The adapter 121 is configured to receive an emergency broadcast from the emergency broadcast platform 110 and send the emergency broadcast to the RDS encoding controller 122. The RDS encoding controller 122 is configured to generate an RDS data packet according to the emergency broadcast, and send the RDS data packet to the frequency modulation transmitter 123. The FM transmitter 123 is used for transmitting RDS data packets to the terminal device 130 via radio.
It should be noted that the adapter 121 is an emergency broadcast adapter, and the emergency broadcast adapter is a device for receiving, parsing and verifying an emergency broadcast and performing transmission protocol conversion. The emergency broadcast adapter may be of the type TC-1602B or WES 270. The present application is not limited thereto.
The specific transmission process of the emergency broadcast is as follows: first, the emergency broadcast platform 110 acquires an emergency broadcast, and then the emergency broadcast platform sends the emergency broadcast to the broadcast transmitting station 120. An adapter 121 in broadcast transmitting station 120 receives an emergency broadcast from an emergency broadcast platform and sends the emergency broadcast to an RDS encoding controller 122. The RDS encoding controller 122 generates an RDS data packet according to the received emergency broadcast, and transmits the RDS data packet to the frequency modulation transmitter 123. Finally, the FM transmitter 123 transmits the RDS data packets to the terminal device 130 by radio.
It is understood that fig. 1 shows only a partial structural schematic diagram of the fm emergency broadcasting system 100, and in other possible implementations, the fm emergency broadcasting system 100 may further include more or less constituent modules than the embodiments of the present application. Therefore, the structure of the fm emergency broadcast system 100 shown in fig. 1 should not be taken as limiting the present application.
Referring to fig. 2, an embodiment of the present application provides a terminal device 130. In the embodiment of the present application, the terminal device 130 may be a radio, a car radio, a smart phone, a computer, a Personal digital assistant (PAD), and the like.
Structurally, the terminal device 130 includes: at least one processor 131, at least one memory 132, a communication module 133, and at least one communication bus 134. The communication bus 134 is used for realizing communication among the processor 131, the memory 132 and the communication module 133. The communication module 133 is configured to communicatively couple with the broadcast transmitting station 120. The communication module 133 may be a wireless receiving module. The memory 132 is used to store programs. The processor 131 is used to call a program stored in the memory 132. Specifically, the processor 131 is configured to call a program stored in the memory 132 to obtain that the communication module 133 receives a target data packet sent by the broadcast transmitting station 120, record a number of an error small block when the target small block in the received target data packet is the error small block, and receive the target small block having the same number as the error small block when the target data packet is received next time.
The processor 131 may be an integrated circuit chip having signal processing capability. The Processor 131 may also be a general-purpose Processor, for example, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a discrete gate or transistor logic device, or a discrete hardware component, which can implement or execute the methods, steps, and logic blocks disclosed in the embodiments of the present Application. Further, a general purpose processor may be a microprocessor or any conventional processor or the like.
The Memory 132 may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), and an electrically Erasable Programmable Read-Only Memory (EEPROM).
It should be understood that the structure shown in fig. 2 is merely an illustration, and the terminal device 130 provided in the embodiment of the present application may have fewer or more components than those shown in fig. 2, or may have a different configuration from that shown in fig. 2. Further, the components shown in fig. 2 may be implemented by software, hardware, or a combination thereof.
Referring to fig. 3, an embodiment of the present application provides a method for receiving a data packet. The method is applied to the terminal device 130 as shown in fig. 2. The specific flow and steps of the method are described below with reference to fig. 3. The method comprises the following steps: step S101-step S102.
Step S101: and receiving a target data packet sent by a broadcast transmitting station.
The emergency broadcasting platform sends the emergency broadcast to a broadcasting transmitting station after acquiring the emergency broadcast, and the broadcasting transmitting station is used for generating a data packet according to the emergency broadcast and then wirelessly transmitting the data packet. The terminal equipment in the frequency modulation emergency broadcasting system can receive the data packet transmitted by wireless. The data packet is divided into a plurality of small blocks for transmission in the transmission process. Each tile contains a number. For example, the terminal device receives a target data packet a sent by the emergency platform, and the target data packet a is divided into a plurality of target tiles for transmission during transmission (including the target tile a1 and the target tile a 2).
Wherein the data packet includes data content and a digital signature. The data content is emergency broadcast content, the digital signature is data attached to the data content, or the data content is subjected to password transformation. Such data or cryptographic transformations allow the recipient of the data content to determine the source and integrity of the data content and protect the data from being forged or repudiated by other recipients. Due to the presence of the digital signature, the data packet will typically be very long.
Optionally, when the broadcast transmitting station includes an RDS encoding controller, the RDS encoding controller is configured to generate an RDS data packet from the emergency broadcast (based on the GDJ 085 and 2018 analog fm emergency broadcast specifications). The RDS data packet is divided during transmission into a number of frames, each frame comprising 8 bytes, each frame being divided into 4 small blocks. For example, if the generated RDS data packet includes 80 bytes, the RDS data packet is divided into 10 frames, each frame includes 8 bytes, and each byte is divided into 4 small blocks.
Step S102: and when the received target small block is an error small block, recording the number of the error small block, and when the target data packet is received next time, receiving the target small block with the same number as the error small block.
It should be noted that when the data packet is divided into a plurality of small blocks, the terminal device receives and parses each small block individually.
In this step, each target small block in the target data packet is received, and when the received target small block is an error small block, the number of the error small block is recorded. It should be noted that when the signal is slightly lower than the receiving threshold (i.e. when the signal of the terminal device is poor), a data receiving error or data loss is likely to occur, and at this time, the target small block of the data receiving error or data loss is an error small block, and at this time, the number of the error small block is recorded. For example, target packet a includes target tile a1, target tile a2, target tile A3, and target tile a 4. If the target tile a2 is an error tile, the number of the error tile is recorded. When the next time the target packet a is received, only the target small block having the same number as the error small block needs to be received. That is, when the recorded target tile a2 is an error tile, only the target tile a2 in the target packet a needs to be received when the target packet a is received next time. For another example, destination packet B includes destination tile B1, destination tile B2, and destination tile B3. If the target tile B3 is an error tile, the number of the error tile is recorded. When the next time the target packet B is received, only the target small block having the same number as the error small block needs to be received. That is, when the recorded target tile B3 is an error tile, only the target tile B3 in the target packet B needs to be received when the target packet B is received next time.
Optionally, receiving a target tile with the same number as the error tile at the next time of receiving the target data packet may include: when receiving the target data packet next time, judging whether the target small block with the same number as the error small block is a correct small block; if so, receiving the target small block with the same number as the error small block.
That is, when the target packet is received next time, it is determined whether the target tile having the same number as the error tile in the target packet is the correct tile, for example, target packet a includes target tile a1, target tile a2, target tile A3, and target tile a 4. If the target tile a2 is an error tile, the number of the error tile is recorded. When the next target packet a is received, it is determined whether the target tile a2 in the target packet a is the correct tile. When target tile A2 in target packet A is the correct tile, target tile A2 is received. If the target tile a2 in the target packet a is still an error tile, i.e. the target tile a2 is lost or has an error, the target tile a2 is not received. When the target data packet is received next time, whether the target tile A2 in the next target data is the correct tile is continuously judged until the correct target tile A2 is received. In the embodiment of the application, when the target data packet is received next time, whether the target small block with the same number as the error small block is the correct small block is judged; if yes, receiving the target small block with the same number as the error small block, and avoiding repeated receiving of the error small block.
In this application, after receiving the target data packet sent by the emergency platform in step S101, the method further includes: and when the received target small block is the correct small block, analyzing the correct small block until all the target small blocks in the target data packet are successfully analyzed.
Since each tile is received and parsed by the terminal device individually. Therefore, when the received target small block is the correct small block, the correct small block is analyzed. The difference between this step and the prior art is that, in the prior art, when there is an error small block in the target data packet, the terminal device discards the analyzed correct small block, and when the terminal device receives the target data packet again, each target small block in the target data packet is re-analyzed. In the present application, when the received target tile is the correct tile (where the correct tile includes the correct tile re-received in step S102), the correct tile is analyzed until all target tiles in the target data packet are successfully analyzed. That is, in the present application, when there is an erroneous small block in the target data packet, the terminal device does not discard the analyzed correct small block, but only obtains the target small block with the same number as the erroneous small block when receiving the target data packet next time, and then analyzes the target small block until all target small blocks in the target data packet are successfully analyzed. For example, the destination packet B includes destination tile B1, destination tile B2, and destination tile B3. If the target tile B3 is an error tile, the number of the error tile is recorded. Since the target tile B1 and the target tile B2 are correct tiles, the target tile B1 and the target tile B2 are analyzed, and the analyzed target tile B1 and target tile B2 are not discarded. When the next time the target packet B is received, only the target small block having the same number as the error small block needs to be received. That is, when the destination packet B is received next time, only the destination tile B3 in the destination packet B needs to be received. At this time, all target tiles in the target packet B are successfully parsed.
In this application, after successfully parsing all target tiles in the target data packet, the method further includes: and playing the emergency broadcast obtained by analyzing the target data packet.
At this time, the terminal device may play the emergency broadcast content packet in the successfully analyzed target data.
In summary, in the embodiment of the present application, when the received target small block is an error small block, the number of the error small block is recorded, and when the target data packet is received next time, the correct target small block having the same number as the error small block is received. Compared with the prior art, the serial number of each error small block is recorded, when a data packet sent by the broadcast transmitting station is received next time, only the target small block with the same serial number as the error small block needs to be received, the whole data packet does not need to be received again, and the repeated receiving of data is avoided to a great extent. In addition, the existing digital signature in the current data packet causes the data packet to be very long, so the requirement on the receiving threshold of the terminal device is very high, and the problem that the receiving threshold is high because the data packet is too long can be effectively optimized by adopting the above embodiment. In the embodiment of the application, even if the terminal equipment is in an environment with unstable signals, the complete data packet can be received in time.
Referring to fig. 4, based on the same inventive concept, an embodiment of the present application further provides a device 200 for receiving a data packet, which is applied to a terminal device in an fm emergency broadcast system, where the fm emergency broadcast system further includes a broadcast transmitting station, the broadcast transmitting station is configured to transmit the data packet to the terminal device, each data packet is divided into a plurality of small blocks for transmission when being transmitted, and each small block includes a number, and the device includes: a receiving module 201 and a recovery module 202.
A receiving module 201, configured to receive a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks.
A recovering module 202, configured to record a number of the error small block when the received target small block is an error small block, and receive the target small block with the same number as the error small block when the target data packet is received next time.
Optionally, the receiving device 200 of the data packet further includes a parsing module 203. The parsing module 203 is configured to, after receiving a target data packet sent by the broadcast transmitting station, parse the correct small block when the received target small block is a correct small block until all the target small blocks in the target data packet are successfully parsed.
Optionally, the receiving device 200 of the data packet further includes a playing module 204. The playing module 204 is configured to play the emergency broadcast obtained by analyzing the target data packet after all the target small blocks in the target data packet are successfully analyzed.
Optionally, the recovering module 202 is further configured to determine whether the target small block with the same number as the error small block is a correct small block when the target data packet is received next time; and if so, receiving the target small block with the same number as the error small block.
Based on the same inventive concept, the present application further provides a storage medium, on which a computer program is stored, and when the computer program is executed, the computer program performs the method provided in the foregoing embodiments.
The storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more integrated servers, data centers, and the like. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as target and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method for receiving a data packet, which is applied to a terminal device in a fm emergency broadcast system, where the fm emergency broadcast system further includes a broadcast transmitting station, the broadcast transmitting station is configured to transmit a data packet to the terminal device, each data packet is divided into a plurality of small blocks for transmission during transmission, and each small block includes a number, and the method includes:
receiving a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks;
when the received target small block is an error small block, recording the number of the error small block, and when the target data packet is received next time, receiving the target small block with the same number as the error small block.
2. The method of claim 1, wherein after said receiving the target data packet sent by the broadcast transmitting station, the method further comprises:
and when the received target small block is a correct small block, analyzing the correct small block until all the target small blocks in the target data packet are successfully analyzed.
3. The method of claim 1, wherein after the parsing until all of the target tiles in the target packet is successful, the method further comprises:
and playing the emergency broadcast obtained by analyzing the target data packet.
4. The method of claim 1, wherein receiving the target tile with the same number as the error tile next time the target data packet is received comprises:
when the target data packet is received next time, judging whether the target small block with the same number as the error small block is a correct small block;
and if so, receiving the target small block with the same number as the error small block.
5. The method of claim 1, wherein the data packet includes data content and a digital signature.
6. The method of claim 1, wherein said data packets are RDS data packets, each of said data packets being divided into a plurality of frames at the time of transmission, each of said frames being divided into 4 small blocks.
7. A receiving apparatus of a data packet, applied to a terminal device in a fm emergency broadcast system, wherein the fm emergency broadcast system further includes a broadcast transmitting station, the broadcast transmitting station is configured to transmit the data packet to the terminal device, each data packet is divided into a plurality of small blocks for transmission when being transmitted, each small block includes a serial number, and the apparatus includes:
a receiving module, configured to receive a target data packet sent by the broadcast transmitting station; wherein the target data packet comprises a plurality of target small blocks;
and the recovery module is used for recording the number of the error small block when the received target small block is the error small block, and receiving the target small block with the same number as the error small block when the target data packet is received next time.
8. The apparatus of claim 7, further comprising: an analysis module;
the analysis module is used for analyzing the correct small block when the received target small block is the correct small block after receiving the target data packet sent by the broadcast transmitting station until all the target small blocks in the target data packet are analyzed successfully.
9. A frequency modulation emergency broadcasting system is characterized by comprising an emergency broadcasting platform, a broadcasting transmitting station and terminal equipment; the emergency broadcast platform is in communication connection with the broadcast transmitting station, the emergency broadcast platform is used for sending emergency broadcast to the broadcast transmitting station, and the broadcast transmitting station is used for generating a data packet from the emergency broadcast and transmitting the data packet to the terminal equipment in a wireless mode.
10. The system of claim 9, wherein said broadcast transmitting station comprises an adapter, an RDS encoding controller, and a frequency modulated transmitter; the adapter is in communication connection with the emergency broadcast platform; the RDS coding controller is respectively connected with the adapter and the frequency modulation transmitter, and the adapter is used for receiving emergency broadcast of the emergency broadcast platform and sending the emergency broadcast to the RDS coding controller; the RDS coding controller is used for generating an RDS data packet by the emergency broadcast and sending the RDS data packet to the frequency modulation transmitter; and the frequency modulation transmitter is used for transmitting the RDS data packet to the terminal equipment through wireless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792056A (en) * | 2003-05-16 | 2006-06-21 | 高通股份有限公司 | Reliable reception of broadcast/multicast content |
| CN101202604A (en) * | 2007-08-14 | 2008-06-18 | 深圳市同洲电子股份有限公司 | Method, system and equipment for transmitting and receiving network data |
| CN103391145A (en) * | 2012-05-09 | 2013-11-13 | 国家广播电影电视总局广播科学研究院 | Method for achieving frequency modulation emergency broadcast based on RDS |
| CN103957048A (en) * | 2014-05-07 | 2014-07-30 | 李正文 | Method for preventing wireless batch received and transmitted data loss through frame structure |
| CN204231370U (en) * | 2014-12-11 | 2015-03-25 | 成都新光微波工程有限责任公司 | A kind of emergent intelligent broadcast system |
| KR20150101325A (en) * | 2014-02-26 | 2015-09-03 | 한국전자통신연구원 | Ddetecting apparatus for monitoring emergency broadcasting message frame, emergency wake-up alert service transmitter and receiver |
| CN106453302A (en) * | 2016-10-09 | 2017-02-22 | 北京数码视讯科技股份有限公司 | Emergency broadcast message transmission device and system |
| KR20170003947U (en) * | 2016-05-13 | 2017-11-22 | 동양텔레콤 주식회사 | Apparatus for providing digital broadcast signal |
| CN109560901A (en) * | 2018-11-14 | 2019-04-02 | 广州虎牙信息科技有限公司 | A kind of data repeating method, device, terminal device and storage medium |
-
2019
- 2019-12-23 CN CN201911343416.2A patent/CN111162857B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792056A (en) * | 2003-05-16 | 2006-06-21 | 高通股份有限公司 | Reliable reception of broadcast/multicast content |
| CN101202604A (en) * | 2007-08-14 | 2008-06-18 | 深圳市同洲电子股份有限公司 | Method, system and equipment for transmitting and receiving network data |
| CN103391145A (en) * | 2012-05-09 | 2013-11-13 | 国家广播电影电视总局广播科学研究院 | Method for achieving frequency modulation emergency broadcast based on RDS |
| KR20150101325A (en) * | 2014-02-26 | 2015-09-03 | 한국전자통신연구원 | Ddetecting apparatus for monitoring emergency broadcasting message frame, emergency wake-up alert service transmitter and receiver |
| CN103957048A (en) * | 2014-05-07 | 2014-07-30 | 李正文 | Method for preventing wireless batch received and transmitted data loss through frame structure |
| CN204231370U (en) * | 2014-12-11 | 2015-03-25 | 成都新光微波工程有限责任公司 | A kind of emergent intelligent broadcast system |
| KR20170003947U (en) * | 2016-05-13 | 2017-11-22 | 동양텔레콤 주식회사 | Apparatus for providing digital broadcast signal |
| CN106453302A (en) * | 2016-10-09 | 2017-02-22 | 北京数码视讯科技股份有限公司 | Emergency broadcast message transmission device and system |
| CN109560901A (en) * | 2018-11-14 | 2019-04-02 | 广州虎牙信息科技有限公司 | A kind of data repeating method, device, terminal device and storage medium |
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