Methods for frequency division multiplexed on-off keying signals for wake-up radios
AssigneeInterDigital Patent Holdings, Inc.
InventorsAlphan Sahin, Rui Yang, Frank La Sita, Hanqing Lou, Xiaofei Wang, Li-Hsiang Sun
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Abstract
An access point (AP) that supports the IEEE 802.11ba protocol may transmit a frame including a physical layer (PHY) preamble to one or more stations (STAs) over a channel. The PHY preamble may include a plurality of repeated modulated legacy signal (L-SIG) fields to spoof a recipient of the frame and protect a wake up signal (WUS) to be subsequently transmitted by the AP. The AP may transmit the WUS to at least a first STA of the one or more STAs, wherein the at least the first STA is a IEEE 802.11ba compliant STA.
Claims14
A station (STA) comprising:
- a transceiver;
- and
- a processor;
- wherein the transceiver and the processor are configured to:
- receive, from an access point (AP):
- a first part of a first frame including a physical layer (PHY) preamble, wherein the PHY preamble comprises:
- a legacy signal (L-SIG) field using a first binary phase shift keying (BPSK) constellation;
- and
- a first BPSK mark field using a second BPSK constellation phase rotated relative to the first BPSK constellation;
- and
- a second part of the first frame including a wake-up radio (WUR) field, wherein the WUR field comprises a WUR on-off keying (OOK) synchronization (sync) field.
A method for use in a station (STA), the method comprising:
- receiving, from an access point (AP):
- a first part of a first frame including a physical layer (PHY) preamble, wherein the PHY preamble comprises:
- a legacy signal (L-SIG) field using a first binary phase shift keying (BPSK) constellation;
- and
- a first BPSK mark field using a second BPSK constellation phase rotated relative to the first BPSK constellation;
- and
- a second part of the first frame including a wake-up radio (WUR) field, wherein the WUR field comprises a WUR on-off keying (OOK) synchronization (sync) field.
Dependencies are inferred from the claim text.