Methods for selecting and controlling devices
First Claim
1. A method, implemented in a given device and a wireless controller that performs a selection process, comprising the steps of:
- i. receiving, at the given device, a probe message from the wireless controller, and obtaining, based on the probe message, relative position information of the given device with respect to the wireless controller;
ii. determining, at the given device, a response time to send a given device response signal to the message according to a first predefined rule based on the relative position information of the given device;
iii. receiving, at the wireless controller, a response signal from at least one other device, wherein the response signal from the at least one other device contains the relative position information of the at least one other device;
iv. detecting, at the given device, the response signal from the at least one other device before expiration of the response time; and
v. deciding, at the given device, whether to send or not to send the given device response signal by;
retrieving the relative position information contained in the at least one received response signal from the at least one other device;
comparing the relative position information of the at least one other device to the relative position information of the given device, wherein the given device response signal contains the relative position information of the given device; and
sending the given device response signal only if the at least one other device'"'"'s distance to the wireless controller is greater than the distance of the given device to the wireless controller.
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Accused Products
Abstract
A method of selecting and controlling devices based on wireless communication technology. The wireless controller sends a probe message to one or more devices; each device receives the probe message, obtains information in respect of its relative position with respect to the wireless controller, determines a response time to respond according to a first predefined rule, based on its relative position information: detects response signals from other devices before expiration of the response time; decides whether to send or not to send its response signal according to a second predefined rule and the detecting procedure of response signals from other devices; the wireless controller receives response signals sent by the devices after the comparison of the relative position information of each device with respect to the wireless controller, and selects the target devices from the devices. Embodiments of the present invention reduce the complexity, delay and energy consumption of the selection for wireless devices, and are especially applicable for wireless lighting systems.
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Citations
8 Claims
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1. A method, implemented in a given device and a wireless controller that performs a selection process, comprising the steps of:
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i. receiving, at the given device, a probe message from the wireless controller, and obtaining, based on the probe message, relative position information of the given device with respect to the wireless controller; ii. determining, at the given device, a response time to send a given device response signal to the message according to a first predefined rule based on the relative position information of the given device; iii. receiving, at the wireless controller, a response signal from at least one other device, wherein the response signal from the at least one other device contains the relative position information of the at least one other device; iv. detecting, at the given device, the response signal from the at least one other device before expiration of the response time; and v. deciding, at the given device, whether to send or not to send the given device response signal by;
retrieving the relative position information contained in the at least one received response signal from the at least one other device;
comparing the relative position information of the at least one other device to the relative position information of the given device, wherein the given device response signal contains the relative position information of the given device; and
sending the given device response signal only if the at least one other device'"'"'s distance to the wireless controller is greater than the distance of the given device to the wireless controller. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for selecting a target device from among a plurality of devices, wherein the method comprises the steps of:
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i. sending, by a wireless controller, a probe message to the plurality of devices, wherein each of the plurality of devices is configured to obtain, based on the probe message, relative position information of the respective device with respect to the wireless controller; ii. receiving, by the wireless controller, a response signal sent by at least some of the plurality of devices, wherein each of the received response signals contains relative position information describing the corresponding devices'"'"' relative position with respect to the wireless controller, wherein a response signal is sent by a respective one of the plurality of devices only if said respective one of the plurality of devices determines that said respective one of the plurality of devices is closer to the wireless device than another of the plurality of devices; iii. comparing, by the wireless controller, the relative position information contained in the received response signals, and, in direct response to said comparing, selecting the target device from among the plurality of devices according to a predefined rule; iv. determining, by the wireless controller, from the relative position information contained in the response signal, a power level that both;
(a) guarantees reception of a signal from the wireless controller by the selected target device; and
(b) minimizes power consumption by the wireless controller; andv. sending, by the wireless controller, a control signal containing a unique identifier for the selected target device at the power that is selected based on the relative position information for the selected target device. - View Dependent Claims (8)
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Specification