公开(公告)号：US20240098781A1

公开(公告)日：2024-03-21

申请号：US17766886

申请日：2020-09-30

Applicant: MEDIATEK INC.

Inventor： Chiou-Wei TSAI ,  Timothy Perrin FISHER-JEFFES ,  Chun-Hsuan KUO

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: A method executed by a User Equipment (UE) operating in a Frame-Based Equipment (FBE) mode is provided. The method includes the following steps: determining a starting time and a periodicity of a first Fixed Frame Period (FFP) of a cell on an operating channel of an unlicensed band; determining a starting time and a periodicity of a second FFP for initiating an uplink transmission to the cell; performing a Listen-Before-Talk (LBT) procedure on the operating channel of the unlicensed band; and performing the uplink transmission to the cell using a first uplink resource in the second FFP in response to the LBT procedure indicating that the operating channel of the unlicensed band is clear.

公开(公告)号：US20180323801A1

公开(公告)日：2018-11-08

申请号：US15971350

申请日：2018-05-04

Applicant: Mediatek Inc.

Inventor： Cheng-Yi HSU ,  Chong-You LEE ,  Wei Jen CHEN ,  Maoching CHIU ,  Timothy Perrin FISHER-JEFFES ,  Ju-Ya CHEN ,  Yen Shuo CHANG

IPC: H03M13/11 ,  H04L1/00

CPC classification number: H03M13/1162 ,  H04L1/0057 ,  H04L1/0071

Abstract: An apparatus determines a code block size (CBS) of information bits contained in a codeword of low-density parity check (LDPC) coding. The apparatus compares the CBS with at least one threshold, determines, based on a result of the comparison, a Kb number and determines a Kp number based on a code rate and the Kb number. The apparatus generates a parity check matrix. An information portion of the parity check matrix is a first matrix formed by M number of second square matrices. M is equal to Kp multiplied by Kb. A total number of columns in the Kb number of second square matrices is equal to a total number of bits of the CBS. One or more matrices of the M number of second square matrices are circular permutation matrices. The apparatus operates an LDPC encoder or an LDPC decoder based on the parity check matrix.