CN114630178A - Message receiving system based on 5G NR broadcast and implementation method - Google Patents
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- 238000004590 computer program Methods 0.000 claims description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/435—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream
- H04N21/4353—Processing of additional data, e.g. decrypting of additional data, reconstructing software from modules extracted from the transport stream involving decryption of additional data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/458—Scheduling content for creating a personalised stream, e.g. by combining a locally stored advertisement with an incoming stream; Updating operations, e.g. for OS modules ; time-related management operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client
- H04N21/61—Network physical structure; Signal processing
- H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
- H04N21/6131—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving transmission via a mobile phone network
Abstract
The invention discloses a message receiving system based on 5G NR broadcasting and an implementation method thereof, belonging to the technical field of broadcasting communication, aiming at solving the technical problems that how to realize that a user freely selects favorite programs and can watch broadcasting television anytime and anywhere, flow is not needed, a SIM card-free mode is not needed, the user experience and the convenience are improved, and the adopted technical scheme is as follows: the system comprises a mobile terminal application program unit, a verification decryption unit, a frequency sweeping unit, a display unit and an acquisition unit, wherein the mobile terminal application program unit is used for setting a channel and a frequency point by calling a modem interface, informing the modem of reading program data in a current cell and starting the reception of a program; the verification decryption unit is used for verifying and decrypting the data according to the message body structure after receiving the program list data, acquiring the original program list data and analyzing the data; the frequency sweeping unit is used for closing the data receiving of the program list, starting frequency sweeping work and scanning available frequency points.
Description
Technical Field
The invention relates to the technical field of broadcast communication, in particular to a message receiving system based on 5G NR broadcast and an implementation method thereof.
Background
Under the 5G NR broadcast service, the 5G universal terminal can receive the 5G broadcast signals transmitted under the same wireless resource, the number of users is not limited, and compared with unicast, the frequency spectrum resource is greatly saved; the terminal is flexible, and the 5G NR broadcast can be widely applied to various 5G universal terminals such as televisions, mobile phones, flat panels, wearable devices and automobile center consoles. In terms of coverage, the future 5G NR broadcast can realize signal coverage in remote areas and can also meet deep coverage in indoor and outdoor and mobile states of hotspot areas.
In a typical broadcast reception scenario, only audio can be listened to and there is no program order functionality. Therefore, how to realize that a user can freely select favorite programs and watch broadcast television anytime and anywhere without flow and supporting a SIM card-free mode is a technical problem to be solved urgently at present.
Disclosure of Invention
The technical task of the invention is to provide a message receiving system based on 5G NR broadcasting and an implementation method thereof, so as to solve the problems that how to realize that a user can freely select favorite programs and watch broadcasting television anytime and anywhere, flow is not needed, a SIM card-free mode is not needed, and user experience and convenience are improved.
The technical task of the present invention is achieved in such a manner that, a message receiving system based on 5G NR broadcasting, the system comprising,
the mobile terminal application program unit is used for setting a channel and a frequency point by calling a modem interface, informing the modem to read program data in the current cell and starting the reception of the program;
the verification decryption unit is used for verifying and decrypting the data according to the message body structure after receiving the program data, acquiring the original program data and analyzing the data;
the frequency sweep unit is used for closing program data receiving, starting frequency sweep work, and scanning available frequency points: the mobile terminal application program unit calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
the display unit is used for filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result and displaying a program list with all the valid frequency points;
and the acquisition unit is used for clicking the programs in the program list, giving the channel id and the frequency point of the current program to the modem, opening a corresponding program data receiving channel, and acquiring the audio and video data for playing.
Preferably, the mobile terminal application program unit interacts with the modem through a related method of qoeServer. reportAppQuality (bundle) provided for App-Wirelist kit interface document;
the channel and the frequency point are stored in a bundle data type and reported through a qoeServer.
Preferably, the mobile terminal application unit includes,
the channel list acquisition module is used for displaying a channel program list after acquiring program data and analyzing and realizing program switching by selecting specific programs in the channel program list;
the video information display module is used for analyzing the video stream in playing and displaying the specific information of the average code rate, the video coder-decoder, the video resolution, the video frame rate and the audio coder-decoder;
the full-screen playing module is used for realizing the rendering display of the video through the surfaceview control and realizing the full-screen display of the video playing by adjusting the surfaceview control parameter;
the emergency broadcast playing module is used for detecting whether emergency broadcast is sent or not in the process of playing the program, and once receiving the emergency broadcast message, the emergency broadcast playing module suspends the video playing and plays the emergency broadcast audio message.
Preferably, the channel list obtaining module is implemented as follows:
receiving udp data using DatagramSocket;
obtaining udp data and verifying the initial identification of the first 4 bytes;
the verification is carried out by decrypting the data in the message body structure;
combining the decrypted available data with a display list control recycleview through an android Adapter control to display a channel program list;
and adding a click callback interface in the android Adapter control, calling when specific program content in the channel program list is clicked, stopping the currently played program, and opening a new program.
Preferably, the implementation method of the video information display module is as follows:
acquiring a video track stream by using a player universal interface;
calling format.codecs to obtain a video codec, and obtaining video resolution through format.width and format.height;
acquiring an audio codec by acquiring an audio track stream, and acquiring an audio sampling rate by format.
The implementation method of the emergency broadcast playing module is as follows:
starting a Thread sub-Thread, and continuously receiving emergency broadcast data through DatagramSocket;
after receiving the emergency broadcast data, calling a stop method of the player to pause the current play;
and calling a playAudio method of the player to play the emergency broadcast audio message.
Preferably, the verification and decryption unit is specifically as follows:
after the data in the message body structure is subjected to message type removal and data of the spare field removal, the remaining encrypted data is decrypted by a key to form a plain text in a json format;
after acquiring real program data, converting the json data structure type into a bean file through Gson, storing the data and facilitating calling and using;
the two ends of the message data format received by the mobile terminal application unit through NR broadcast are respectively a start identifier and an end identifier, and the middle is a message body structure, which is specifically as follows:
firstly, a complete message body structure has a fixed 4-byte starting mark and a fixed 4-byte ending mark;
removing the initial mark and the end mark, and leaving the message body as the rest content;
③, the first byte of the message body is the type of the message, and 0x01 is the channel list;
fourthly, the message body starts from the 2 nd byte (subscript 1) to the 33 rd byte (subscript 32), is 32 bytes, is 0x00 at present, and is expanded subsequently;
the message body starts from the 34 th byte (subscript 33), removes the last 32 bytes, is the ciphertext after the data message encryption;
sixthly, the last 32 bytes of the message body are MD5 of all the previous data (message type +32 byte extension + ciphertext) and are used for data verification.
And seventhly, the ciphertext is converted into a character string after being decrypted, and the character string is the plaintext of the data message.
Preferably, the effective frequency point and the ineffective frequency point are distinguished as follows:
the mobile terminal application program unit calls the register QoCallBack to register a callback function to the Wireless Kit, the mobile terminal application program unit issues a query frequency point instruction, and the data frequency point returned by the callback function is an effective frequency point.
A message receiving implementation method based on 5G NR broadcasting is characterized in that program list data are obtained through decryption based on a DatagramSo packet timeout mechanism, and flow is not required and a SIM card-free mode is supported; the method comprises the following specific steps:
s1, the mobile terminal application unit sets a channel and a frequency point by calling a modem interface, informs the modem to read program data in the current cell, and starts receiving the program;
s2, after receiving the program list data, carrying out data verification and decryption according to the message body structure of the program list data, obtaining the original program list data, and carrying out data analysis;
s3, closing the program data reception, starting the frequency sweeping work, and scanning available frequency points: the mobile terminal application program unit calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
s4, filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result, and displaying a program list with all the valid frequency points;
s5, clicking programs in the program list, sending the channel id and the frequency point of the current program to the modem, opening the program data receiving channel, and acquiring audio and video data for playing.
An electronic device, comprising: a memory and at least one processor;
wherein the memory has stored thereon a computer program;
the at least one processor executes the computer program stored in the memory to cause the at least one processor to perform the 5G NR broadcast based message reception implementation method as described above.
A computer-readable storage medium having stored therein a computer program executable by a processor to implement the 5G NR broadcast based message reception implementation method as described above.
The message receiving system and the implementation method based on the 5G NR broadcast have the following advantages:
the invention can obtain the program data through decryption based on the DatagramSocket timeout mechanism, the user can select the favorite program to watch the broadcast television at any time and any place, and the invention does not need flow and supports the SIM card-free mode, thereby improving the user experience and convenience;
for the content side, the CDN audio-visual delivery pressure is greatly reduced, the flow cost of live streaming data is greatly reduced, and higher-code-rate content can be provided;
the invention supports full platform full terminal;
fourthly, the message received by the invention needs to be decrypted first to obtain real data;
fifthly, opening related channel permission through interaction with the modem;
the invention realizes the receiving and playing of audio and video data without using the mobile phone flow;
seventhly, the invention realizes the data reception through a DatagramSocket timeout mechanism;
(eighth) the data format of the message received by the NR broadcast of the present invention has start and end identifications;
and (ninthly), the invention carries out MD5 verification on the message volume data, thereby greatly improving the safety.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a 5G NR broadcast based message receiving system;
FIG. 2 is a flow chart of a message reception implementation method based on 5G NR broadcasting;
fig. 3 is a schematic diagram of a message body structure.
Detailed Description
The message receiving system and the implementation method based on the 5G NR broadcast of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Example 1:
as shown in fig. 1, the message receiving system based on the 5G NR broadcasting of the present invention includes,
the mobile terminal application program unit is used for setting a channel and a frequency point by calling a modem interface, informing the modem to read program data in the current cell and starting the reception of the program; the mobile terminal application program unit adopts mobile phone app.
The verification decryption unit is used for verifying and decrypting the data according to the message body structure after receiving the program data, acquiring the original program data and analyzing the data;
the frequency sweep unit is used for closing program data receiving, starting frequency sweep work, and scanning available frequency points: the mobile terminal application program unit calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
the display unit is used for filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result and displaying a program list with all the valid frequency points;
and the acquisition unit is used for clicking the programs in the program list, giving the channel id and the frequency point of the current program to the modem, opening a corresponding program data receiving channel, and acquiring the audio and video data for playing.
The mobile terminal application program unit in the embodiment interacts with the modem through a related method of qoeServer. report Apquality (bundle) provided for an App-Wirelist kit interface document;
the channel and the frequency point are stored in a bundle data type and reported through a qoeServer.
The mobile terminal application unit in this embodiment includes,
the channel list acquisition module is used for displaying a channel program list after acquiring program data and analyzing and realizing program switching by selecting specific programs in the channel program list;
the video information display module is used for analyzing the video stream in playing and displaying the specific information of the average code rate, the video coder-decoder, the video resolution, the video frame rate and the audio coder-decoder;
the full-screen playing module is used for realizing the rendering display of the video through the surfaceview control and realizing the full-screen display of the video playing by adjusting the surfaceview control parameter;
the emergency broadcast playing module is used for detecting whether emergency broadcast is sent or not in the process of playing the program, and once receiving the emergency broadcast message, the emergency broadcast playing module suspends the video playing and plays the emergency broadcast audio message.
The implementation method of the channel list acquisition module in this embodiment is specifically as follows:
(1) receiving udp data using the DatagramSocket;
(2) the acquired udp data verifies the initial identification of the first 4 bytes;
(3) the verification is that the data in the message body structure is decrypted;
(4) combining the decrypted available data with a display list control recycleview through an android Adapter control to display a channel program list;
(5) and adding a click callback interface in the android Adapter control, calling when specific program content in the channel program list is clicked, stopping the currently played program, and opening a new program.
The implementation method of the video information display module in this embodiment is specifically as follows:
(1) acquiring a video track stream by using a universal player interface;
(2) calling format codes to obtain a video coder-decoder, and obtaining video resolution through format width and format height;
(3) acquiring an audio codec by acquiring the audio track stream, and acquiring an audio sampling rate by format.samplerate;
the implementation method of the emergency broadcast playing module in this embodiment is specifically as follows:
(1) starting a Thread sub-Thread, and continuously receiving emergency broadcast data through DatagramSocket;
(2) after receiving the emergency broadcast data, calling a stop method of the player to pause the current play;
(3) and calling a playAudio method of the player to play the emergency broadcast audio message.
The verification and decryption unit in this embodiment is specifically as follows:
(1) after the data in the message body structure is subjected to message type removal and data of the spare field removal, the remaining encrypted data is decrypted by a key to form a plain text in a json format;
(2) after the real program data are obtained, the json data structure type is converted into a bean file through Gson, and the data are stored and convenient to call and use;
the two ends of the message data format received by the mobile terminal application unit through NR broadcast are respectively a start identifier and an end identifier, and the middle is a message body structure, as shown in fig. 3, the message body structure is specifically as follows:
firstly, a complete message body structure has a fixed 4-byte starting mark and a fixed 4-byte ending mark;
removing the initial mark and the end mark, and leaving the message body as the rest content;
the first byte of the message body is the type of the message, and 0x01 is the channel list;
fourthly, the message body starts from the 2 nd byte (subscript 1) to the 33 rd byte (subscript 32), is 32 bytes, is 0x00 at present, and is expanded subsequently;
the message body starts from the 34 th byte (subscript 33), removes the last 32 bytes, is the ciphertext after the data message encryption;
sixthly, the last 32 bytes of the message body are MD5 of all the previous data (message type +32 byte extension + ciphertext) and are used for data verification.
And seventhly, the ciphertext is converted into a character string after being decrypted, and the character string is the plaintext of the data message.
The distinction between the valid frequency points and the invalid frequency points in this embodiment is as follows:
the mobile terminal application program unit calls the register QoCallBack to register a callback function to the Wireless Kit, the mobile terminal application program unit issues a query frequency point instruction, and the data frequency point returned by the callback function is an effective frequency point.
Example 2:
as shown in fig. 2, the method for receiving a message based on a 5G NR broadcast according to the present invention obtains program data by decryption based on a DatagramSocket timeout mechanism, and implements a traffic-free mode and a SIM card-free mode; the method comprises the following specific steps:
s1, the mobile app calls a modem interface to set a channel and a frequency point, informs the modem to read program data in the current cell, and the mobile app starts receiving the program;
s2, after receiving the program data, carrying out data verification and decryption according to the message body structure of the program data to obtain original program data and carrying out data analysis;
s3, closing program data receiving, starting frequency sweeping work, scanning available frequency points: the mobile phone app calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
s4, filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result, and displaying a program list with all the valid frequency points;
s5, clicking programs in the program list, sending the channel id and the frequency point of the current program to the modem, opening the program data receiving channel, and acquiring audio and video data for playing.
Example, 3:
an embodiment of the present invention further provides an electronic device, including: a memory and a processor;
wherein the memory stores computer execution instructions;
the processor executes the computer-executable instructions stored in the memory, so that the processor executes the message receiving implementation method based on the 5G NR broadcast in any embodiment of the invention.
The processor may be a Central Processing Unit (CPU), but may also be other general purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), array of off-the-shelf programmable gates (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be used to store computer programs and/or modules, and the processor may implement various functions of the electronic device by executing or executing the computer programs and/or modules stored in the memory and invoking data stored in the memory. The memory may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function, and the like; the storage data area may store data created according to the use of the terminal, and the like. The memory may also include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a memory only card (SMC), a Secure Digital (SD) card, a flash memory card, at least one disk storage period, a flash memory device, or other volatile solid state memory device.
Example 4:
the embodiment of the present invention further provides a computer-readable storage medium, in which a plurality of instructions are stored, and the instructions are loaded by a processor, so that the processor executes the message reception implementation method based on the 5G NR broadcast in any embodiment of the present invention. Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RYM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer by a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion unit connected to the computer, and then a CPU or the like mounted on the expansion board or the expansion unit is caused to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the embodiments described above.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A message receiving system based on 5G NR broadcast, characterized in that the system comprises,
the mobile terminal application program unit is used for setting a channel and a frequency point by calling a modem interface, informing the modem to read program data in the current cell and starting the reception of the program;
the verification decryption unit is used for verifying and decrypting the data according to the message body structure after receiving the program data, acquiring the original program data and analyzing the data;
the frequency sweep unit is used for closing program data receiving, starting frequency sweep work, and scanning available frequency points: the mobile terminal application program unit calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
the display unit is used for filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result and displaying a program list with all the valid frequency points;
and the acquisition unit is used for clicking the programs in the program list, giving the channel id and the frequency point of the current program to the modem, opening a corresponding program data receiving channel, and acquiring the audio and video data for playing.
2. The method for implementing 5G NR broadcast-based message reception according to claim 1, wherein the mobile terminal application unit interacts with the modem through a method related to qoeServer. reportApquality (bundle) provided for App-Wirelist kit interface documents;
the channel and the frequency point are stored in a bundle data type and reported through a qoeServer.
3. The message reception implementation method based on 5G NR broadcast according to claim 1 or 2, wherein the mobile terminal application program unit includes,
the channel list acquisition module is used for displaying a channel program list after acquiring program data and analyzing and realizing program switching by selecting specific programs in the channel program list;
the video information display module is used for analyzing the video stream in playing and displaying the specific information of the average code rate, the video coder-decoder, the video resolution, the video frame rate and the audio coder-decoder;
the full-screen playing module is used for realizing the rendering display of the video through the surfaceview control and realizing the full-screen display of the video playing by adjusting the surfaceview control parameter;
the emergency broadcast playing module is used for detecting whether emergency broadcast is sent or not in the process of playing the program, and once receiving the emergency broadcast message, the emergency broadcast playing module suspends the video playing and plays the emergency broadcast audio message.
4. The method for implementing 5G NR broadcast based message reception according to claim 3, wherein the channel list obtaining module is specifically as follows:
receiving udp data using DatagramSocket;
obtaining udp data and verifying the initial identification of the first 4 bytes;
the verification passes the decryption of the data in the message body structure;
combining the decrypted available data with a display list control recycleview through an android Adapter control to display a channel program list;
and adding a click callback interface in the android Adapter control, calling when specific program content in the channel program list is clicked, stopping the currently played program, and opening a new program.
5. The method as claimed in claim 4, wherein the video information presentation module is specifically as follows:
acquiring a video track stream by using a player universal interface;
calling format to obtain a video coder-decoder, and obtaining video resolution through format.
Acquiring an audio codec by acquiring an audio track stream, and acquiring an audio sampling rate by format.
The emergency broadcast playing module specifically comprises the following components:
opening a Thread sub Thread, and continuously receiving emergency broadcast data through DatagramSocket;
after receiving the emergency broadcast data, calling a stop method of the player to pause the current play;
and calling a playAudio method of the player to play the emergency broadcast audio message.
6. The method of claim 5G NR broadcast-based message reception implementation according to claim 5, wherein the checksum decryption unit is specifically as follows:
after the data in the message body structure is subjected to message type removal and data of the spare field removal, the remaining encrypted data is decrypted by a key to form a plain text in a json format;
after real program data are obtained, the json data structure type of the program data is converted into bean files through Gson, and the data are stored and convenient to call and use;
the two ends of the message data format received by the mobile terminal application unit through NR broadcast are respectively a start identifier and an end identifier, and the middle is a message body structure, which is specifically as follows:
firstly, a complete message body structure has a fixed 4-byte starting mark and a fixed 4-byte ending mark;
removing the initial mark and the end mark, and leaving the message body as the rest content;
③, the first byte of the message body is the type of the message, and 0x01 is the channel list;
fourthly, the message body is 32 bytes from the 2 nd byte to the 33 rd byte, is 0x00 at present, and is expanded subsequently;
fifthly, the message body starts from the 34 th byte, the last 32 bytes are removed, and the message body is the ciphertext after the data message is encrypted;
sixthly, the last 32 bytes of the message body are MD5 of all the previous data and are used for data check.
And seventhly, the ciphertext is converted into a character string after being decrypted, and the character string is the plaintext of the data message.
7. The method for implementing message reception based on 5G NR broadcast of claim 6, wherein the distinction between the valid frequency point and the invalid frequency point is as follows:
the mobile terminal application program unit calls the register QoCallBack to register a callback function to the Wireless Kit, the mobile terminal application program unit issues a query frequency point instruction, and the data frequency point returned by the callback function is an effective frequency point.
8. A message receiving implementation method based on 5G NR broadcast is characterized in that the method obtains program data by decryption based on a DatagraShocket timeout mechanism, and realizes no flow and supports a SIM card-free mode; the method comprises the following specific steps:
s1, the mobile terminal application unit sets a channel and a frequency point by calling a modem interface, informs the modem to read program data in the current cell, and starts receiving the program;
s2, after receiving the program list data, carrying out data verification and decryption according to the message body structure of the program list data, obtaining the original program list data, and carrying out data analysis;
s3, closing program data receiving, starting frequency sweeping work, scanning available frequency points: the mobile terminal application program unit calls a frequency sweeping interface provided by the modem to sweep frequency and acquire a frequency sweeping result;
s4, filtering the program data of the invalid frequency points in the program list according to the frequency sweeping result, and displaying a program list with all the valid frequency points;
s5, clicking programs in the program list, sending the channel id and the frequency point of the current program to the modem, opening the program data receiving channel, and acquiring audio and video data for playing.
9. An electronic device, comprising: a memory and at least one processor;
wherein the memory has stored thereon a computer program;
the at least one processor executes the memory-stored computer program to cause the at least one processor to perform the 5G NR broadcast-based message reception implementation method of claim 8.
10. A computer-readable storage medium, in which a computer program is stored, the computer program being executable by a processor to implement the 5G NR broadcast-based message reception implementing method of claim 8.
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| CN202210142694.7A CN114630178A (en) | 2022-02-16 | 2022-02-16 | Message receiving system based on 5G NR broadcast and implementation method |
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