Patent ID: 7298761

Claim:
A link searching and maintaining method for establishing a link search table between a first bluetooth device in one piconet to a second bluetooth device in another piconet with both piconets located in a bluetooth scatternet, each bluetooth device including a link update variable, a link update timer, an initialization procedure executing timer, an initialization procedure trigger timer, a missing timer and a link search table, wherein the first Bluetooth device sends a link searching packet to the second bluetooth device to establish the link search table, wherein the link searching packet comprises a link number field, a source IP address field, a source bluetooth address (BD_Addr) field, a sender bluetooth address (BD_Addr) field, a link search number field, and multiple search link identification fields, the method comprising: (A) filling the corresponding fields of the link search packet; (B) enabling the link update variable and link update timer; (C) filling the link number field with 0; and (D) encapsulating with the bluetooth packet header and transmitting through the bluetooth channel.