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US 2020/0008123 A1Published application
Using Estimated Time Drift to Determine Keep Alive Periodicity in Synchronized Networks
AssigneeTexas Instruments Incorporated
InventorsAriton E. Xhafa, Jianwei Zhou
Life of this patent
Estimating the term…
Abstract
A method for operating a node in a wireless network is provided that includes computing an estimated time drift between the node and a parent node of the node, and using the estimated time drift and a number of hops between the node and a root node of the wireless network to determine a keep alive period for the node.
Claims22
A method for operating a node in a wireless network, the method comprising:
- computing an estimated time drift between the node and a parent node of the node;
- using the estimated time drift and a number of hops between the node and a root node of the wireless network to determine a keep alive period for the node;
- setting a wakeup timer of the node based on the keep alive period for the node;
- and
- in response to expiration of the wakeup timer, transmitting a keep alive packet from the node to the parent node.
2 more elements
A wireless communication device in a wireless network, the wireless communication device comprising:
- a memory storing software instructions, wherein execution of the software instructions causes the wireless communication device to:
- compute an estimated time drift between the wireless communication device and a first parent wireless communication device of the wireless communication device;
- use the estimated time drift and a number of hops between the wireless communication device and a root wireless communication device of the wireless network to determine a keep alive period for the wireless communication device;
- set a wakeup timer based on the keep alive period;
- and
- in response to expiration of the wakeup timer, transmit a keep alive packet to the first parent wireless communication device;
- and
- a processor coupled to the memory to execute the software instructions.
5 more elements
Dependencies are inferred from the claim text.