Patent ID: 9264106
Filing Date: 2016-02-16
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for controlling flows of a logical link layer in a near field communication (NFC) software stack, comprising steps of: Step A: using a device comprising an NFC controller chip to execute program instructions to arrange a Send Window and a Receive Window in the logical link layer for controlling flows of transmitted data frames; Step B: using the NFC controller chip to execute the program instruction to adjust the size of the Send Window and the size of the Receive Window according to a transfer rate determined based on upper-layer application, communication delay time determined based on channel quality, and the size of a data frame, and the size of the Receive Window satisfying an equation taking on the form of Receive Window=[FWT×DATARATE_MAX]/[(2+Link Miu)×8] where Receive Window represents the size of the Receive Window, FWT represents the communication delay time, DATARATE_MAX represents transfer rate, and Link Miu represents a parameter designated when an output terminal and an input terminal are connected, and FWT and DATARATE_MAX being read by an NFC controller at the input terminal; and Step C: using the NFC controller chip to execute the program instructions to control flows of the output terminal according to the size of the Send Window, and controlling flows of the input terminal according to the size of the Receive Window.