US Patent No. 10,117,267

SCHEDULER FOR POWER-EFFICIENT TIME SLOTTED PROTOCOL


Patent No. 10,117,267
Issue Date October 30, 2018
Title Scheduler For Power-efficient Time Slotted Protocol
Inventorship Arvind K. Raghu, Plano, TX (US)
Ariton E. Xhafa, Plano, TX (US)
Ramanuja Vedantham, Allen, TX (US)
Xiaolin Lu, Plano, TX (US)
Assignee TEXAS INSTRUMENTS INCORPORATED, Dallas, TX (US)

Claim of US Patent No. 10,117,267

1. A network comprising:a parent node;
an intermediate node configured to communicate with the parent node using a wireless network protocol; and
at least one child node configured to communicate with the parent node via the intermediate node using the wireless network protocol;
the parent node comprising:
a broadcast coordinator to transmit a broadcast message from the parent node to the at least one child node through the intermediate node at predetermined time intervals according to the wireless network protocol; and
a scheduler to generate a scheduling packet that is communicated in the broadcast message, the scheduling packet includes a data field to instruct each child node to activate and receive data communicated from the parent node in a prescribed time slot following the broadcast message;
wherein the at least one child node includes a first child node that transmits an indication byte during a present time frame to indicate to the parent node whether the first child node will transmit additional data in a future time frame relative to the present time frame, wherein the indication byte contains a non-zero value to indicate that the first child node will transmit additional data in a future time frame and the non-zero value indicates a number of frames between the present time frame and the future time frame in which the additional data will be transmitted by the first child node.