公开(公告)号：US20220385433A1

公开(公告)日：2022-12-01

申请号：US17754130

申请日：2019-09-24

Applicant: Nokia Technologies Oy

Inventor： Enrico RANTALA ,  Klaus DOPPLER

IPC: H04L5/00 ,  H04L27/00 ,  H04W74/08 ,  H04J13/00

Abstract: A wireless node, such as an access point or a user equipment, includes a transceiver configured to transmit during a first frame in a first time interval and a second frame in a second time interval. The first and second time intervals are separated by an interframe space (IFS). The wireless node also includes a processor configured to generate a sensing waveform. The transceiver transmits the sensing waveform during the IFS. In some cases, the processor is configured to switch the transceiver from a transmit mode during the first time interval to a receive mode during the IFS. The transceiver receives a sensing waveform from a wireless node during the IFS.

公开(公告)号：US20180206743A1

公开(公告)日：2018-07-26

申请号：US15869587

申请日：2018-01-12

Applicant: Nokia Technologies Oy

Inventor： Durgaprasad SHAMAIN ,  Klaus DOPPLER ,  Swetha MUNIRAJU ,  Eric TORKILDSON

IPC: A61B5/021 ,  A61B5/024 ,  A61B5/00 ,  A61B5/0285

CPC classification number: A61B5/02108 ,  A61B5/0059 ,  A61B5/024 ,  A61B5/0285 ,  A61B5/0507 ,  A61B5/4887 ,  A61B5/725 ,  A61B5/7253 ,  G01S13/00 ,  G01S15/10 ,  G01S15/42 ,  G01S15/88 ,  G01S17/10 ,  G01S17/42 ,  G01S17/88

Abstract: A method comprising: at a processor, determining an in vivo transit distance for an arterial pulse between a first arterial pulse point and a second arterial pulse point using a first distance measured to the first arterial pulse point and a second distance measured to a second arterial pulse point; and at the processor, determining a transit time for an arterial pulse between the first arterial pulse point and the second arterial pulse point, based on one or more transmitted detecting and ranging wave pulses reflected from the first arterial pulse point and from one or more transmitted detecting and ranging wave pulses reflected from the second arterial pulse point.