File group group sending device and file group group sending method based on ultrashort wave radio station
An ultra-short-wave radio and file grouping technology, applied in electrical components, digital transmission systems, error prevention, etc., can solve the problems of narrowband wireless communication, such as the inability of multiple network terminals to accurately transmit data, and the inability to effectively overcome communication errors.
Active Publication Date: 2017-10-31
BEIJING INST OF SPACE LAUNCH TECH +1
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Problems solved by technology
[0003] The purpose of the present invention is to provide a method for sending files in groups to solve the technical problem that in narrowband wireless communication, data cannot be quickly and accurately transmitted to multiple network terminals
[0004] The purpose of the present invention is to provide a file grouping group sending device to solve the technical problem that the existing group sending device cannot effectively overcome communication errors
Method used
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[0089] like figure 1 As shown, in the embodiment of the packet group sending device of the present invention, the sending device 100 and the receiving device 200 are included. In the point-to-multipoint networking structure based on the ultrashort wave station, they are respectively arranged at the sending node (the ultrashort wave station for sending out signals) and the Receiving node (ultrashort wave radio station for receiving signals), the signal input and output port of sending device 100 is connected with the signal input and output port of sending node wireless transceiver unit 300, and the signal input and output port of receiving device 200 is connected with receiving node wireless transceiver unit 300 The signal input and output ports are connected, the sending device 100 also includes a data input port, and the receiving device 200 also includes a data output port.
[0090] The sending device 100 includes a data dividing device 101, a first data encapsulating devic...
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A file grouping and mass texting device based on an ultra-short wave radio station comprises a transmitting device used for transmitting nodes and a receiving device used for receiving the nodes, wherein the transmitting device further comprises a data input port, the receiving device further comprises a data output port, the transmitting device comprises a data partitioning device, a first data packaging device, a second data packaging device, a first counter and a feedback signal receiving device. In a communication network, transmission of a data file to all selected network terminals can be finished by executing a transmitting task once. A file grouping and mass texting method based on breakpoint resume is further involved, and in general, the success rate of transmitting a 10-K data file can be kept over 90%. Correctness of file reception can be ensured by carrying out CRC on the whole file, so that reliable and stable mass texting of the file on the ultra-short wave radio station is achieved.
Description
technical field [0001] The present invention relates to a wireless communication device, in particular to a point-to-multipoint wireless communication device. Background technique [0002] In the past, when using frequency-hopping ultrashort-wave radio stations for file transfer, in order to improve transmission efficiency, group transmission was often used, but there were the following defects: all receiving stations in the network would receive files at the same time, when communication errors occurred due to environmental and other reasons , some receivers cannot receive the complete file; if the file is verified and retransmitted, due to the large number of receiving nodes and the low communication rate between radio channels (generally 4800bps), it is easy to cause network paralysis. In the past, using ultrashort wave radio to send and receive pictures, incomplete files would only cause a small loss of pixels, so verification is generally not performed. In the case of ...
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IPC IPC(8): H04L29/06H04L1/00
Inventor 杨紫薇丁敬海张士军王志勇郑斌王心谦张健刘佑民
Owner BEIJING INST OF SPACE LAUNCH TECH