Link path searching and maintaining method for a bluetooth scatternet
First Claim
1. A link search table establishment and initialization method for establishing a link search table between two bluetooth devices located in a bluetooth scatternet, the bluetooth device having an inter-link layer between a logical link control and adaptation protocol layer and a baseband driver layer, the inter-link layer having 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) executing a standard bluetooth link procedure when a new bluetooth device is involved in a piconet;
(B) the new bluetooth device requesting a master bluetooth device to send corresponding link search table when being linked with the piconet in the logical link control and adaptation protocol (L2CAP) layer;
(C) the master bluetooth device sending the corresponding link search table to the new bluetooth device;
(D) the new bluetooth device establishing or updating the local link search table according the received link search table; and
(E) the new bluetooth device filling the corresponding fields in a packet according the local link search table to transmit the packet.
1 Assignment
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Accused Products
Abstract
A link path search and maintain method for establishing link search table between two bluetooth devices such that the devices can transfer data to/from others device located in a bluetooth scatternet. When initialization of a slave bluetooth device, the new member in a bluetooth piconet receives a link search table that transmitted from a master bluetooth device to establish a local link search table; as the link is broken or the link search table needs be updated, the slave bluetooth device executes a link search establishment transmission procedure or a link search establishment receiving procedure to update the local link search table or establish a new link search table. Then, the slave bluetooth device encapsulates the bluetooth data packet according the information of the local link search table in order to transfer data packet in a scatternet.
8 Citations
12 Claims
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1. A link search table establishment and initialization method for establishing a link search table between two bluetooth devices located in a bluetooth scatternet, the bluetooth device having an inter-link layer between a logical link control and adaptation protocol layer and a baseband driver layer, the inter-link layer having 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:
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(A) executing a standard bluetooth link procedure when a new bluetooth device is involved in a piconet;
(B) the new bluetooth device requesting a master bluetooth device to send corresponding link search table when being linked with the piconet in the logical link control and adaptation protocol (L2CAP) layer;
(C) the master bluetooth device sending the corresponding link search table to the new bluetooth device;
(D) the new bluetooth device establishing or updating the local link search table according the received link search table; and
(E) the new bluetooth device filling the corresponding fields in a packet according the local link search table to transmit the packet.
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2. A link searching and maintaining method for establishing a link search table between two bluetooth devices located in a bluetooth scatternet, the 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 which sends a link searching packet 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:
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(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. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification