Masterless slave/master role switch in a bluetooth piconet

A bluetooth piconet and original host technology, applied in wireless communication, network topology, data exchange network, etc., can solve problems such as information cannot be transmitted

Inactive Publication Date: 2006-07-26
FLEXTRONICS SEMICON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Without the master device as the backbone of the piconet, information cannot be transmitted and the piconet stops working

Method used

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  • Masterless slave/master role switch in a bluetooth piconet
  • Masterless slave/master role switch in a bluetooth piconet
  • Masterless slave/master role switch in a bluetooth piconet

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Embodiment Construction

[0056] The principles and operation of the invention may be better understood with the accompanying drawings and accompanying description. Before turning to the details of the present invention, it should be clear that the present invention provides two sets of features which together provide a very useful approach.

[0057] The first feature relates to a method for a slave device of a Bluetooth piconet to perform a masterless role transition after the disappearance of the master device. The first feature will be described in detail with reference to FIGS. 2 and 3 .

[0058] The second feature relates to a method of allowing point-to-multipoint applications running on a Bluetooth piconet to continue working after the piconet's master disappears. The second feature will be described with reference to FIGS. 4 to 6 .

[0059] Recovery from the loss of a piconet master includes the steps of designating a slave as the new master and then making the other slaves accept this new de...

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PUM

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Abstract

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.

Description

technical field [0001] The present invention relates to hierarchy designation in a bluetooth piconet, and more particularly to selecting a master device when a master / slave transition is not possible due to the disappearance of the master device. The invention also relates to re-establishing point-to-multipoint communication in the bluetooth piconet after the disappearance of the master device. Background technique [0002] Bluetooth is an industry specification for computing and telecommunications that specifies how different electronic devices, such as mobile phones, computers, and personal digital assistants, can connect to each other and communicate with each other. Ericsson Mobile Communications (Stockholm, Sweden) proposed Bluetooth in 1994 as a protocol enabling wireless communication of peripheral devices. With the formation of a "special interest group," Bluetooth became an accepted standard, opening the way for the development of a technology that would allow diff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L5/14H04B5/00H04L12/28H04L12/56
CPCH04W84/20H04L12/28
Inventor 约尔·博格
Owner FLEXTRONICS SEMICON
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