Invention Application
- Patent Title: WINDOW WIDENING
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Application No.: US17504794Application Date: 2021-10-19
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Publication No.: US20220278938A1Publication Date: 2022-09-01
- Inventor: Khurram Waheed , Yaoqiao Li
- Applicant: NXP B.V.
- Applicant Address: NL Eindhoven
- Assignee: NXP B.V.
- Current Assignee: NXP B.V.
- Current Assignee Address: NL Eindhoven
- Priority: CN202110222724.0 20210226
- Main IPC: H04L12/807
- IPC: H04L12/807 ; H04W56/00

Abstract:
Disclosed is a method of operating a low power wireless receiver in which a radio is periodically operable for receive intervals with sleep intervals therebetween and comprising a sleep clock having a sleep clock accuracy. A first transmission or packet is received. Based on a start moment of the first received packet, and an expected interval between packets, a nominal start moment is determined to start the radio for a packet window until a nominal end moment, for receiving a second packet; the packet window duration is extended in dependence on an estimated drift based on the SCA to provide a widened window. A start moment of a second received packet is measured within the widened window. An actual drift is calculated, from the start moment of the second packet; and an actual start moment and an actual window duration is determined, for receiving a third packet, based on the actual drift.
Public/Granted literature
- US11777862B2 Method of receiver window widening and autodrift calculation using packet timestamping Public/Granted day:2023-10-03
Information query