US Patent Issued to Cisco Technology on June 16 for "Preamble extension fields in wakeup PPDUs" (California Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,659,857, issued on June 16, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Preamble extension fields in wakeup PPDUs" was invented by Brian D. Hart (Sunnyvale, Calif.) and Pooya Monajemi (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments herein describe waking up client devices using a physical layer protocol data unit (PPDU) with a preamble extension field with a length that permits the client device to wake up a higher power (or higher capability) radio. In one embodiment, a first portion of a preamble of the PPDU is received at the client device using a lower power (or lower capability) receiver. This triggers th...