Data transmission method and terminal based on narrowband
A data transmission method and a data transmission terminal technology, which are applied in the narrowband-based data transmission method and the terminal field, can solve problems such as data signal transmission, terminal failure, and data transmission speed reduction, and achieve improved transmission rate, rich functions, and perfect functions Effect
Active Publication Date: 2020-11-17
HYTERA COMM CORP
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Problems solved by technology
In the digital trunking communication standard DMR and the police digital trunking PDR digital standard, although the respective frame formats and transmission formats of voice and data are stipulated, they cannot support the mixed transmission mode of voice and data
For example, in the process of narrowband voice communication, the terminal cannot transmit data signals, but must wait for the voice communication to end before transmitting data signals
[0003] Therefore, the above-mentioned narrowband communication system has a single communication function, and voice signals and data signals must be transmitted separately, resulting in a decrease in data transmission speed
Method used
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Embodiment Construction
[0058] refer to figure 1 , figure 1 It is a schematic flowchart of an embodiment of the narrowband-based data transmission method of the present invention. The narrowband-based data transmission method of the present embodiment includes the following steps:
[0059] 101: During voice communication, the terminal detects whether there is currently a data frame to be transmitted.
[0060] For example, when a terminal based on narrowband communication such as a walkie-talkie establishes a voice call with another terminal such as another walkie-talkie, before ending the call, the terminal detects whether there is currently a data frame to be transmitted at regular intervals or when receiving a user detection instruction. If yes, execute step 102; otherwise, continue to execute this step for detection after the time is set or when a new user detection instruction is received.
[0061] Specifically, the data frame includes not only multiplexed call information, encrypted informati...
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The invention discloses a data transmission method based on a narrow band, and a terminal. The method comprises the steps: enabling the terminal to detect whether there is a to-be-transmitted data frame currently or not in a voice communication process; inserting the to-be-transmitted data frame between voice superframes if there is the to-be-transmitted data frame currently; and transmitting thedata frame through a voice channel. The method achieves the mixed transmission of data and voice in the above mode. Not only the voice communication of a user cannot be interrupted, but also the limited voice channel is used more efficiently and the user may receive more data information during voice communication through the narrow band communication, thereby increasing the functions of the terminal, improving the narrow band voice communication function, and bringing convenience to a user.
Description
technical field [0001] The present invention relates to the technical field of communication, in particular to a narrowband-based data transmission method and a terminal. Background technique [0002] In the application of the existing narrowband communication system, voice signals and data signals are generally transmitted separately due to bandwidth limitations. In the digital trunking communication standard DMR and the police digital trunking PDR digital standard, although the respective frame formats and transmission formats of voice and data are stipulated, they cannot support the mixed transmission mode of voice and data. For example, in the process of narrowband voice communication, the terminal cannot transmit data signals, but must wait for the end of voice communication before transmitting data signals. [0003] Therefore, the above-mentioned narrowband communication system has a single communication function, and voice signals and data signals must be transmitted...
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IPC IPC(8): H04M11/06H04L1/00
CPCH04L1/0008H04M11/06Y02D30/50
Inventor 尹瑞华
Owner HYTERA COMM CORP