Method for managing network when master disappears
First Claim
1. A method for building up backup master information, comprising the steps of:
- (a) receiving connection information from at least one of a plurality of slaves in a network;
(b) determining a priority of said at least one of the plurality of slaves to be used as a backup master, when a network master disappears, according to the received connection information; and
(c) announcing the determined priority information of backup master to at least another one of the plurality of slaves.
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Abstract
A method for managing a network in which Bluetooth equipped devices are linked together when the network master cannot serve as a master. During normal operation, the network master updates the backup master rank information when the network master disappears, in a predetermined cycle, according to link information, such as received signal strength indication (RSSI) or link quality, transmitted from the Bluetooth equipped devices serving as a slave. When power of the network master is exhausted, or when the network master leaves the network operating region, a new master is selected from the remaining slaves according to the backup master rank information, thereby reconfiguring a network around the new network master. The method enables proper designation of a new master when a preexisting network master leaves the network operating region, thereby increasing a probability of holding connection throughout the network.
189 Citations
14 Claims
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1. A method for building up backup master information, comprising the steps of:
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(a) receiving connection information from at least one of a plurality of slaves in a network;
(b) determining a priority of said at least one of the plurality of slaves to be used as a backup master, when a network master disappears, according to the received connection information; and
(c) announcing the determined priority information of backup master to at least another one of the plurality of slaves. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for designating a new master of a network when a preexisting network master disappears, the method comprising the steps of:
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(a) determining whether the preexisting network master has disappeared;
(b) if the preexisting network master has disappeared, determining a rank, which is used for choosing a new network master and is received before the disappearance of the preexisting network master; and
(c) changing to a role as the new network master if the rank is highest of any one of a plurality of slaves. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for establishing a connection between a new master and a remaining plurality of slaves of a network when a preexisting network master disappears, the method comprising the steps of:
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(a) checking whether the preexisting network master has disappeared;
(b) checking backup master rank information, when it is determined that the preexisting network master has disappeared in the step (a);
(c) attempting to establish a connection with the new network master when it is determined that one of the remaining plurality of slaves does not have the highest priority, according to the backup master rank information; and
(d) remaining as one of the remaining plurality of slaves if a connection with the new network master is established in the step (c).
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Specification