公开(公告)号：US20240085552A1

公开(公告)日：2024-03-14

申请号：US17931470

申请日：2022-09-12

Applicant: QUALCOMM Incorporated

Inventor： Dongsik KIM ,  Koorosh AKHAVAN ,  Anand Srinivas GURUSWAMY ,  Damith Nivantha SENARATNE ,  Le Nguyen LUONG

IPC: G01S13/76 ,  G01S13/87

CPC classification number: G01S13/765 ,  G01S13/878

Abstract: An example method of ultra-wideband (UWB) sensing performed by a wireless communication device, the method comprising determining a first channel impulse response (CIR) estimation of a first frequency channel based on a radio access technology (RAT) session, wherein the RAT is different from UWB. The method also comprises determining a second CIR estimation of a second frequency channel based on a UWB session and determining a third CIR estimation of the first frequency channel based on determining a phase difference between the third CIR estimation and the first CIR estimation. The method further comprises determining a total CIR estimation for a combined frequency channel comprising the first frequency channel and the second frequency channel based on stitching the first CIR estimation, the second CIR estimation, and the third CIR estimation.

公开(公告)号：US20190273577A1

公开(公告)日：2019-09-05

申请号：US16031804

申请日：2018-07-10

Applicant: QUALCOMM Incorporated

Inventor： Eunmo KANG ,  Anand Srinivas GURUSWAMY ,  Le LUONG

IPC: H04L1/00 ,  H04L12/721

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive a data packet that includes at least in part a preamble, an encoded block, and a payload. The apparatus may detect the preamble of the data packet at a last symbol of the preamble or prior to the last symbol of the preamble. The apparatus may compute a branch metric for each of a plurality of transitions between states. The apparatus may initialize a path metric for each of a plurality of non-synchronization states and synchronization states. In certain aspects, each of the synchronization states may be associated with the preamble. The apparatus may determine a survivor path for each of the non-synchronization states and synchronization states based at least in part on a respective path metric. The apparatus may determine a traceback timing.