公开(公告)号：US10893477B2

公开(公告)日：2021-01-12

申请号：US16012766

申请日：2018-06-20

Applicant: Silicon Laboratories Inc.

Inventor： Logeshwaran Vijayan ,  Sriram Mudulodu

IPC: H04W52/02 ,  H04L27/26 ,  H04B17/318 ,  H04W84/12

Abstract: A power saving receiver has a controller which is operative to remove power from the receiver when a threshold is exceeded during reception of a packet. The threshold level is formed by comparison of any of: signal energy of unoccupied subcarriers less the signal energy in occupied subcarriers; signal energy in a first range of occupied subcarriers compared to signal energy in a different range of occupied subcarriers; error vector magnitude from a first set of subcarriers to a second set of subcarriers in a different spectral region of the channel; cyclic prefix cross-correlation, or common phase error increase.

公开(公告)号：US10757652B2

公开(公告)日：2020-08-25

申请号：US16221325

申请日：2018-12-14

Applicant: Silicon Laboratories Inc.

Inventor： Sriram Mudulodu ,  Partha Sarathy Murali ,  SuryaNarayana Varma Nallaparaju ,  Logeshwaran Vijayan ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04W52/02 ,  H04B1/16 ,  H04W40/24 ,  H04W84/12

Abstract: A wireless receiver powers up shortly before the expected arrival of a beacon frame, and upon detection of a beacon frame from an access point the station is associated with and determination of subsequent fields of interest, including at least a TIM field, the receiver powers down. At the previously identified fields of interest, the receiver powers up and uses previously stored values to continue packet demodulation, thereafter examining the TIM field to determine whether the AP has packets to transmit to the station.