Patent ID: 7242677

Claim:
A link method for establishing a link between two bluetooth devices located in a bluetooth scatternet, the bluetooth device including multiple link detection timers, a detection procedure timer, multiple master/slave flags, an initialization procedure executing timer, an initialization procedure trigger timer and a link missing timer, the method comprising: (A) a link initialization procedure for determining whether the role of this bluetooth device in a dedicated link is a slave or a master and initializing the corresponding timers when resetting or initializing a link, wherein the link initialization procedure further comprises: (A1) setting up and activating the initialization procedure executing timer when a link is reset or initialized; (A2) listening to a bluetooth channel; (A3) determining whether the bluetooth device detects an inquiry packet or a paging packet; (A4) setting the bluetooth device as a slave on the link if step (A3) determines that the bluetooth device detects an inquiry packet or a paging packet; (A5) determining whether the procedure executing timer is expired or not; (A6) setting up the multiple link detection timers, the detection procedure timer, the initialization procedure trigger timer and the link missing timer if step (A5) determines that the procedure executing timer is expired; and (A7) activating the initialization procedure trigger timer; (B) a link search establishment procedure for searching all possible paths to transfer data packets and establishing a link path table; and (C) a link detection procedure for resuming to detect whether the link is existed or not when the corresponding link detection timer of a link expires after a pre-determined period.