Coordinator switching method and communication system using same
First Claim
1. A coordinator switching method, comprising:
- (a) selecting a coordinator that broadcasts a sync signal for synchronizing an ad-hoc network environment;
(b) selecting at least one of a plurality of devices linked to the ad-hoc network as a replacement coordinator, and setting a priority of the selected replacement coordinator;
(c) transmitting the priority to the selected replacement coordinator; and
(d) if the sync signal is not broadcast for a predetermined time, the replacement coordinator becomes a new coordinator in accordance with the set priority, and broadcasts the sync signal.
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Abstract
A coordinator switching method and a communication system using the same, which can promptly replace the present coordinator with another device if an unexpected situation happens so that the present coordinator cannot suddenly broadcast a sync signal in the ad-hoc network environment. The coordinator switching method includes selecting a coordinator that broadcasts a sync signal for synchronizing the ad-hoc network environment, selecting at least one of a plurality of devices linked to an ad-hoc network as a replacement coordinator and setting a priority of the selected replacement coordinator, transmitting the priority to the selected replacement coordinator, and if the sync signal is not broadcast for a predetermined time, the replacement coordinator becoming a new coordinator in accordance with the set priority to broadcast the sync signal.
87 Citations
16 Claims
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1. A coordinator switching method, comprising:
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(a) selecting a coordinator that broadcasts a sync signal for synchronizing an ad-hoc network environment;
(b) selecting at least one of a plurality of devices linked to the ad-hoc network as a replacement coordinator, and setting a priority of the selected replacement coordinator;
(c) transmitting the priority to the selected replacement coordinator; and
(d) if the sync signal is not broadcast for a predetermined time, the replacement coordinator becomes a new coordinator in accordance with the set priority, and broadcasts the sync signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A communication system operating in an ad-hoc network environment, comprising:
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a plurality of devices connected to an ad-hoc network; and
a coordinator for synchronizing at least one of the plurality of devices by broadcasting a sync signal to the devices;
wherein the coordinator selects at least one replacement coordinator that can serve as the coordinator by inquiring a connection request command transmitted from the plurality of devices, and transmits a connection response command that includes a priority of the selected replacement coordinator to the device selected as the replacement coordinator; and
wherein the replacement coordinator, which is selected as the replacement coordinator, becomes a new coordinator according to a set priority, and broadcasts the sync signal if the sync signal is not broadcast for a predetermined time. - View Dependent Claims (13, 14, 15, 16)
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Specification