Traffic control method for near field communication software stack logical link layer

Abstract

The invention discloses a traffic control method for a near field communication software stack logical link layer. The traffic control method comprises the following steps of: setting a transmitting window and a receiving window for performing traffic control over a transmitted data frame in a logical link layer; dynamically adjusting the size of the transmitting window and the size of the receiving window according to transmission rate determined by an upper application, communication delay time determined by channel quality and the size of the data frame; performing traffic control over a transmitting end by the transmitting window according to the size of the transmitting window; and performing traffic control over a receiving end by the receiving window according to the size of the receiving window. According to the traffic control method, the size of the transmitting window and the size of the receiving window are dynamically adjusted according to the upper application, the channel quality and the size of the data frame, so that band width utilization rate is balanced, and the aim of reducing the memory resource consumption can also be reduced excellently.

Description

technical field [0001] The invention relates to the technical field of short-distance wireless communication, in particular to a flow control method of a logic link layer of a near-field communication software stack. Background technique [0002] NFC (Near Field Communication) technology evolved from the integration of non-contact radio frequency identification (RFID) technology and interconnection technology. In order to promote the development and popularization of NFC technology, the industry created the Near Field Communication Forum (NFC Forum), NFC Forum defines the NFC protocol system. In this system, the NFC software stack is a middleware that provides support for application development at the upper layer and operates the NFC controller at the bottom layer. There is a data link layer in the NFC software stack, and its most basic function is to provide transparent and reliable data transmission services to users of this layer. In addition, the data link layer is also...

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Problems solved by technology

[0006] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a flow control method for the logical link layer of the near-field communication software stack, aiming at solving the problem of unbalanced bandwidth utilization and memory resource consumption during near-field communication in the prior art. big problem

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