US Patent No. 10,716,114

OUTAGE NOTIFICATION AND CONTEXT PRESERVATION FOR ENERGY-HARVESTING DEVICES


Patent No. 10,716,114
Issue Date July 14, 2020
Title Outage Notification And Context Preservation For Energy-harvesting Devices
Inventorship Maruti Gupta, Portland, OR (US)
Rath Vannithamby, Portland, OR (US)
Satish C. Jha, Hillsboro, OR (US)
Kathiravetpillai Sivanesan, Richardson, TX (US)
Mohammad Mamunur Rashid, Hillsboro, OR (US)
Jing Zhu, Portland, OR (US)
Assignee APPLE INC., Cupertino, CA (US)

Claim of US Patent No. 10,716,114

1. An apparatus of a cellular base station capable of wirelessly communicating with an energy-harvesting device (EHD), the apparatus comprising circuitry configured to:receive an energy-harvesting-indicator communication from the EHD, the energy-harvesting-indicator communication indicating that the EHD is a device configured to harvest energy;
start an identification (ID) reallocation-restriction timer when a wireless data exchange occurs between the cellular base station and the EHD;
receive a power-outage communication from the EHD, the power-outage communication indicating a likelihood that the EHD will drop the wireless connection due to a level of energy at the EHD being low;
receive a connection-resumption communication from the EHD, the connection-resumption communication indicating that the level of energy at the EHD is sufficiently high for the wireless connection to be resumed to enable data to be communicated;
store, in one or more memory devices, context information associated with a wireless connection between the cellular base station and the EHD, wherein the context information is stored until the ID reallocation-restriction timer expires, wherein the context information comprises a specific EHD identifier that is associated with the wireless connection, the context information and with downlink data for the EHD;
buffer, in the one or more memory devices, downlink data (DL) associated with a wireless connection between the cellular base station and the EHD, wherein the DL data is buffered until the ID reallocation-restriction timer expires; and
use the context information to resume the wireless connection with the EHD and send the buffered downlink (DL) data to the EHD when the connection-resumption communication is received when the ID reallocation-restriction timer has not expired.