Patent ID: 7209471

Claim:
A data transfer method for transferring data between two bluetooth devices located in a bluetooth scatternet, the bluetooth devices having an inter-link layer between a logical link control and adaptation protocol layer and a baseband driver layer, the inter-link layer comprising multiple transmitter queues, a receiver queue and a link path table, the multiple transmitter queues corresponding to relative links on the bluetooth device, the link path table having multiple link identifications, each having a link field length, a link number and multiple link ID fields, the method comprising: (A) dividing data packet by a segmentation & reassembly unit of the logical link control and adaptation protocol layer into a group of packets which are suitable for baseband transmission; (B) according to the link path table, selecting a group of link identifications of a target device; (C) adding the link field length, link number and multiple link ID fields of the selected group of link identifications and bluetooth header into data packets; and (D) using the link and transmitter queue which corresponding to the link ID 1 field of present transmitting data packet to transfer the packet through baseband and radio-frequency into wireless channel.