METHOD, DEVICE, AND SYSTEM FOR ADJUSTING PACKET LENGTH IN NEAR FIELD COMMUNICATION (NFC)

摘要

Embodiments of the present invention disclose a method, apparatus, and system for adjusting data packet length in near field communication (NFC). The method includes the steps of: determining whether the NFCC of a first NFC device is responsible for determining a maximum length value of a data packet transmitted in a subsequent communication; If yes, the step of the NFCC transmitting a first request including the first length value to the second NFC device-The first request is the maximum length of the data packet transmitted between the first NFC device and the second NFC device in a subsequent communication Used to command to adjust a value to a first length value, the first length value being a value determined by NFCC, the first request further comprising a first device identification number (DID)- ; Receiving, by the NFCC, a first response returned by a second NFC device to the first request; And if the first DID is the same as the second DID, the NFCC uses the first length value as a maximum length value of a data packet transmitted in a subsequent communication. As can be seen, embodiments of the present invention can realize the function of adjusting the maximum length value of the communication data packet in the subsequent communication process by the NFCC and the NFC used as the target by using the NCI standard.