Patent ID: 8264991
Filing Date: 2012-09-11
Classification: H04B,H04W

Abstract:
1. A method for improving symmetry in data transfer in a Logical Link Control (LLC) layer of peer-to-peer Near Field Communications (NFC) devices, including the steps of: periodically transmitting, by an initiator NFC device, first symmetry (SYMM) frames for a power source to drive a target NFC device based on a predetermined idle time; receiving a response frame comprising an LLC Information frame including a more-data bit indicator set by the target NFC device and checking the more-data bit to determine whether to immediately transmit a second SYMM frame; and when a value of the more-data bit indicator is set to 1 to indicates that there is another frame to be transmitted to the initiator NFC device by the target NFC device, sending the second SYMM frame to said target NFC device immediately after receiving the response frame and without waiting for the predetermined idle time; when the value of the more-data bit indicator is set to 0 to indicates that there is no other frame to be transmitted to the initiatory NFC device by said target NFC device, sending the second SYMM frame to the target NFC device after waiting for the predetermined idle time; wherein the both of said initiator NFC device and said target NFC device are configured for setting the more-data bit indicator.