Data transferring method

Abstract

The invention relates to a data transferring method, which is used for RF communications. The method comprises the following steps: a data sending terminal sends data to a data receiving terminal through an RF passageway in a data frame mode; and the data receiving terminal dynamically receives and feeds back data between the data sending terminal and the data receiving terminal according to the condition whether the data receiving terminal receives data frames, thereby successfully sending the data to the data receiving terminal. With the technical scheme provided by the invention, whether the data is successfully received in the RF communications can be quickly determined, so as to accelerate the RF communications.

Description

technical field [0001] The invention relates to the communication field, in particular to a data transmission method in radio frequency communication. Background technique [0002] As we all know, wireless communication refers to a fixed or mobile wireless communication terminal (for example, a mobile wireless phone or a notebook computer with a wireless communication card, etc., which can be referred to as a terminal for short) using electromagnetic waves to communicate. Generally speaking, the terminal is located within the wireless coverage of the communication system, and the electromagnetic wave frequency allocated to the terminal can be divided into multiple carrier frequencies as a wireless communication channel, and radio frequency means that the carrier power of this frequency can be transmitted through the antenna (and vice versa ), propagating at the speed of light in free space in the form of an alternating electromagnetic field. [0003] With the development of...

AI Technical Summary

Problems solved by technology

After the receiving end successfully receives the data frame, it needs to reply the response frame to the sending end (such as figure 2 Shown), and then exit the receiving mode after a fixed time delay; usually in order to speed up the communication speed, this fixed delay time is generally relatively short (usually the time for the sender to send a data frame), due to the inherent reasons of radio frequency communication, Frame reception does not necessarily succeed every time. If the receiving end fails to receive the data frame, it will not respond to the response frame, and the sending end must resend the data frame. When the frame fails and the data frame is resent, the receiving end may have exited the receiving mode, causing the sending end to fail to resend the data frame

Because the receiving end does not have a confirmation mechanism for the response frame to be successfully received by the sending end, it is impossible to determine whether the data frame has been successfully sent, so the only way to ensure the data is that the receiving end delays for a fixed period of time after the data frame is successfully received and then exits the receiving mode. When the frame is retransmitted, it can continue to reply to the response frame, but if the fixed delay time is too short, it still cannot avoid the phenomenon that the receiving end has exited the receiving mode when the sending end fails to receive the response frame and resends the data frame (such as image 3 shown), if the fixed delay time is too long, the communication speed will drop a lot (such as Figure 4 shown)

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