公开(公告)号：US12267201B1

公开(公告)日：2025-04-01

申请号：US18964068

申请日：2024-11-29

Applicant: HaiLa Technologies Inc.

Inventor： Vytas Kezys ,  Alexander Neil Birkett ,  Kerwin Johnson ,  Sam Tiller ,  Juan Miguel David Becerra

IPC: H04L27/26

Abstract: There is provided a method and a circuit for estimating symbol timing in one or more received data frames of a nominal constant envelope signal. The circuit may include an envelope detector and a symbol timing estimator. The envelope detector may be configured to generate an envelope detection output for the received data frames, the envelope detection output having an amplitude ripple associated with the symbol timing in the received data frames. The symbol timing estimator may be configured to receive the envelope detection output and generate a symbol timing estimation output based on the amplitude ripple.

公开(公告)号：US12255741B1

公开(公告)日：2025-03-18

申请号：US18606819

申请日：2024-03-15

Applicant: HaiLa Technologies Inc.

Inventor： Vytas Kezys ,  Juan Miguel David Becerra ,  Matheus Lemes Ferronato

IPC: H04W28/04 ,  H04L1/00 ,  H04L1/1607

Abstract: A method for preserving a frame check sequence (FCS) of a data frame during backscatter communication is provided. The method comprises: receiving a transmitted signal including a transmitted data frame, wherein the transmitted data frame includes a first data sequence and the FCS; determining a cyclic redundancy check (CRC) preservation sequence based on a backscattering tag data sequence, a bit-length of the backscattering tag data sequence, and a given CRC algorithm; and backscattering the transmitted signal to form a backscattered signal including a backscattered data frame, wherein the backscattered data frame includes a second data sequence and the FCS. The second data sequence includes a transmitted data sequence, an encoded tag data sequence and the CRC preservation sequence. The CRC preservation sequence preserves the FCS of the transmitted data frame in the backscattered data frame. The FCS is usable to detect communication errors in the backscattered data frame.

公开(公告)号：US11962412B1

公开(公告)日：2024-04-16

申请号：US18543764

申请日：2023-12-18

Applicant: HaiLa Technologies Inc.

Inventor： Vytas Kezys ,  Juan Miguel David Becerra ,  Matheus Lemes Ferronato

IPC: H04W28/04 ,  H04L1/00 ,  H04L1/1607

CPC classification number: H04L1/1642 ,  H04L1/0061 ,  H04W28/04

Abstract: A method for preserving a frame check sequence (FCS) of a data frame during backscatter communication is provided. The method comprises: receiving a transmitted signal including a transmitted data frame, wherein the transmitted data frame includes a first data sequence and the FCS; determining a cyclic redundancy check (CRC) preservation sequence based on a backscattering tag data sequence, a bit-length of the backscattering tag data sequence, and a given CRC algorithm; and backscattering the transmitted signal to form a backscattered signal including a backscattered data frame, wherein the backscattered data frame includes a second data sequence and the FCS. The second data sequence includes a transmitted data sequence, an encoded tag data sequence and the CRC preservation sequence. The CRC preservation sequence preserves the FCS of the transmitted data frame in the backscattered data frame. The FCS is usable to detect communication errors in the backscattered data frame.