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US 2002/0159401 A1Published application
Masterless slave / master role switch in a bluetooth piconet
AssigneeBrightcom Technologies Ltd.
InventorYoel Boger
Life of this patent
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AssigneeBrightcom Technologies Ltd.
InventorYoel Boger
Estimating the term…
The present invention discloses a method by which a new Bluetooth piconet is established amongst participants of an old Bluetooth piconet whose master has disappeared. After determining that the master has disappeared, one of the slaves is selected to take the function of the master and reestablishes communications at the Baseband layer by contacting each of the other participants. Further, the present invention discloses a method and an associated device for realizing point-to-multipoint communications using a Bluetooth piconet by using an application adaptation layer and a local addressing list. Also, the present invention discloses a method by which point-to-multipoint communications by an application using a Bluetooth piconet is reestablished amongst participants of an old Bluetooth piconet whose master has disappeared. After reestablishing the piconet at the Baseband layer, communications at higher layers of the Bluetooth protocol stack are reestablished from the bottom up, that is, reestablishing communications at the LM layer precedes reestablishing communications at the L2CAP layer.
A method of establishing a new Bluetooth piconet amongst at least two slaves of an old Bluetooth piconet after a disappearance of an old master of the old Bluetooth piconet comprising:
A method for establishing a new Bluetooth piconet amongst at least two slaves of an old Bluetooth piconet after a disappearance of the old master of the old Bluetooth piconet, each of the at least two slaves having a respective assigned old AM_ADDR from a plurality of AM_ADDRs, the method comprising:
A Bluetooth enabled device configured to allow point-to-multipoint communications by an application between at least two units using a Bluetooth piconet comprising:
15 The device of claim 14 further comprising:
The device of claim 15 further comprising a L2CAP layer whereto said local addressing list is accessible, said local addressing list further including, for at least one other unit of the Bluetooth piconet, a LCID corresponding to a logical link between said L2CAP layer of the device and an L2CAP layer of said at least one other unit.
The device of claim 15 further comprising a LM layer whereto said local addressing list is accessible, said local addressing list further including, for at least one other unit of the Bluetooth piconet, a CH corresponding to a logical link between said LM layer of the device and an LM layer of said at least one other unit.
A method of restoring point-to-multipoint communications by an application between at least two units of an old Bluetooth piconet after disappearance of an old master thereof, comprising:
Dependencies are inferred from the claim text.