Power conservation in channel hopping wireless network by independent definition of sleep intervals at each node
AssigneeTexas Instruments Incorporated
InventorsKumaran Vijayasankar, Arvind Kandhalu Raghu, Ramanuja Vedantham
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Abstract
Power conservation is provided in a network of globally unsynchronized wireless communication devices that use asynchronous channel hopping. Each wireless communication device defines its own channel hopping schedule. The channel hopping schedules include channel hop intervals when the device's receiver is active for receiving transmissions, and sleep intervals when the receiver is in a low power sleep state. Parameters associated with the sleep intervals are defined by each wireless communication device independently of external constraint.
Claims22
A method of limiting power consumption in a network of globally unsynchronized wireless communication devices that use asynchronous channel hopping over multiple channels, comprising:
- at each wireless communication device, defining for the wireless communication device a channel hopping schedule for receiving transmissions, wherein the channel hopping schedule includes sleep intervals associated with a low power sleep state, wherein said defining includes defining parameters for the sleep intervals independently of external constraint, and wherein said parameters include rate of occurrence of the sleep intervals, respective durations of the sleep intervals, and respective temporal locations of the sleep intervals;
- broadcasting from each of the wireless communication devices the associated channel hopping schedule;
- and
- receiving at each of the wireless communication devices the channel hopping schedules respectively associated with the other wireless communication devices.
A wireless communication device configured for limiting power consumption in a network of globally unsynchronized wireless communication devices that use asynchronous channel hopping over multiple channels, comprising:
- a scheduler configured to define for said wireless communication device a channel hopping schedule for receiving transmissions, wherein the channel hopping schedule includes sleep intervals associated with a low power sleep state, wherein said scheduler is further configured to define parameters for the sleep intervals independently of external constraint, and wherein said parameters include rate of occurrence of the sleep intervals, respective durations of the sleep intervals, and respective temporal locations of the sleep intervals;
- and
- a transceiver coupled to said scheduler and configured to broadcast said channel hopping schedule from said wireless communication device, and configured to receive other channel hopping schedules respectively associated with and broadcasted by other wireless communication devices in the network;
- wherein each of said other channel hopping schedules has been defined by the associated other wireless communication device, wherein each of said other channel hopping schedules includes sleep intervals that are provided for low power operation and have parameters defined by the associated other wireless communication device independently of external constraint, and wherein the parameters defined by each of said other wireless communication devices include rate of occurrence of the associated sleep intervals, respective durations of the associated sleep intervals, and respective temporal locations of the associated sleep intervals.
Dependencies are inferred from the claim text.