Method for information transmission by utilizing Wi-Fi (Wireless-Fidelity) message length

A technology of message length and information transmission, applied in transmission systems, digital transmission systems, electrical components, etc., can solve problems such as cumbersome operations, increased equipment costs, and interruption of Wi-Fi network data transmission.

Active Publication Date: 2013-09-25
ALIBABA CLOUD COMPUTING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If Bluetooth is used, the cost of equipment will be greatly increased. Although the establishment of a network will not increase the cost of equipment, the operation is very cumbersome. It needs to disconnect the current Wi-Fi network and connect it to the equipment that needs to communicate, and then reconnect the data after transmission. Restore the original Wi-Fi network, so that the data transmission of the current normal use of the Wi-Fi network is completely interrupted

Method used

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  • Method for information transmission by utilizing Wi-Fi (Wireless-Fidelity) message length

Examples

Experimental program
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Effect test

Embodiment 1

[0021] See attached figure 1 , the present invention takes the transmission data coded as 0x10; 0x20; 0x30; 4 byte data of 0x40 as an example to further describe the present invention in detail, and the specific operations are as follows:

[0022] (1), data recoding

[0023] Add a series of data sequences with obvious characteristics agreed by the receiving parties to the sent data for recoding, so that the data to be transmitted has obvious characteristics and is easy for the receiver to identify.

[0024] Because when the wireless network data packet sent by the sender is sent through the Wi-Fi radio frequency, there is also wireless data sent by other communicating devices on the wireless channel. In the traditional mode, the receiver must receive all data packets, and obtain the data sent to itself by analyzing the destination address of these data packets. However, if the receiver and the sender are not in the same wireless network, the content of the wireless data pack...

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Abstract

The invention discloses a method for information transmission by utilizing a Wi-Fi (Wireless-Fidelity) message length. The method is characterized in that information needing to be transmitted is encoded by adopting the Wi-Fi message length, and a UDP (User Datagram Protocol) is used for constructing a data packet; then a Wi-Fi network is used for carrying out information transmission on data sent by more than one Wi-Fi network external equipment; a receiver is subjected to reverse encoding according to predefinition of a sender to accurately restore transmitted information. Compared with the prior art, the method disclosed by the invention has the advantages that current Wi-Fi network transmission of the data sender is not influenced and sending data can be sent to a plurality of sets of equipment outside the Wi-Fi network; on the basis of not changing a Wi-Fi standard communication protocol, two sets of the Wi-Fi equipment needing to be communicated can carry out the information transmission without establishing a network; the method can be applied to data sending to the equipment outside the network through equipment in other cryptographic wireless networks.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a method for transmitting information by using the Wi-Fi message length. Background technique [0002] Wi-Fi wireless communication technology has been widely used in the field of computers, smart phones and tablet computers. With the gradual development of the Internet of Things technology, various types of embedded computer systems, such as sensors, toys, medical equipment, etc., have begun to use Wi-Fi technology to achieve wireless network communication and Internet access. Wi-Fi networks use shared network media, and only devices with the same network name and data encryption method can communicate with each other. But people often need to transfer data to devices outside the Wi-Fi network, for example, sending networking information to devices that have not joined the current Wi-Fi network so that they can join the network. Because when the wireless network...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06H04L29/12H04L12/955H04L47/431
Inventor 徐炜杨海波沈建华王永虹
Owner ALIBABA CLOUD COMPUTING LTD
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