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Method for distributing file based on RDS unidirectional broadcast channel

A technology of broadcasting channels and files, which is applied in the branch offices to provide special services, electrical components, data exchange details, etc., and can solve the problem that the server's ability to process requests has become a bottleneck.

Inactive Publication Date: 2011-09-28
无锡智感星际科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing file distribution method is mainly by C / S (client / server, client / server) mode to send acquisition request to server by client to obtain file, and its advantage is that each client can obtain file according to own demand, The client can interact with the server; its disadvantage is that when a large number of users request files, the server's ability to process requests becomes a bottleneck, and the broadcast feature of RDS solves this problem well, and is suitable for distributing small files to a large number of users

Method used

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  • Method for distributing file based on RDS unidirectional broadcast channel
  • Method for distributing file based on RDS unidirectional broadcast channel
  • Method for distributing file based on RDS unidirectional broadcast channel

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0036] like figure 1 As shown, the system of the present invention includes a client, a server and a transmitting station. The server is used to block, compress, encrypt, and verify the distribution file, and send the distribution data unit to the transmitting station for broadcast; the client obtains service authorization from the server through a two-way channel, and the authorized client receives the broadcast information and decrypts the received data. Data units, assembled files, decompressed files.

[0037] like figure 2 As shown, the present invention includes a server end and a client end. The server includes an authorization code distribution module, a file encryption module, a file compression module, and an RDS broadcast module; the client includes an authorization acquisition module, a decryption module, a decompression module, and a receiving module....

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Abstract

The invention discloses a method for distributing a file based on an RDS unidirectional broadcast channel and is directed to the field of wireless communication technology. The method is realized (reference image 1) through a system composed of a client, a server and a transmitting station and is characterized in that the server conducts block division, compression, encryption and verification towards the file and sends a distribution data unit to the transmitting station for broadcasting; the client acquires service authorization from the server through a bidirectional channel; the authorized client receives broadcast information, decrypts the data unit received and assembles and decompress the file; the sever ensures that the client receives the complete file through a cycle redundancy broadcast; the client uses .part to record the situation of file reception which is used for breakpoint continuous transmission. According to the invention, the function of file distribution is realized by using the frequency modulation broadcast radio station facility and RDS unidirectional data broadcast channel in the prior art.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method for distributing files by using an RDS unidirectional broadcast channel. Background technique [0002] RDS (Radio Data System) is a technology that transmits data information using the rich frequency band of VHF / FM (VHF / FM) (Very High Frequency / Frequency Modulation). For data broadcasting, the theoretical value of the transmission rate is 1187.5bit / s. At present, many mobile terminals (such as mobile phones, vehicle systems, PDAs (Personal Digital Assistant, personal digital assistants), etc.) have integrated RDS receivers. RDS is mainly used in data broadcasting with small amount of data, such as stereo program information, traffic road condition information, etc. Its advantages lie in wide coverage, abundant terminal support, and low cost. [0003] Existing file distribution method is mainly by C / S (client / server, client / server) mode to send a...

Claims

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Application Information

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IPC IPC(8): H04L12/18H04L29/06H04L1/00
Inventor 马建庄逸众田野
Owner 无锡智感星际科技有限公司
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