公开(公告)号：CA3042957A1

公开(公告)日：2018-07-05

申请号：CA3042957

申请日：2017-07-06

Applicant: QUALCOMM INC

Inventor： XU CHANGLONG ,  WU GAOJIN ,  RICHARDSON THOMAS ,  HOU JILEI

IPC: H04L1/00

Abstract: Aspects of the disclosure relate to wireless communication devices configured to generate polar codewords utilizing a single master sequence constructed using density evolution with a nested structure for identifying the frozen bit locations and information bit locations. This single master sequence may be used for any codeword length N up to a maximum codeword length Nmax, and may further be utilized for any code rate R. For example, from the master sequence of length Nmax, a bit location sequence S with codeword length N (where N

公开(公告)号：CA3046236A1

公开(公告)日：2018-07-12

申请号：CA3046236

申请日：2018-01-08

Applicant: QUALCOMM INC ,  WEI CHAO

Inventor： XU CHANGLONG ,  WEI CHAO ,  JIANG JING ,  WU GAOJIN ,  SANKAR HARI ,  HOU JILEI

IPC: H04N19/00

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for rate-matching control channels using polar codes. An exemplary method generally includes encoding a stream of bits using a polar code, determining a size of a circular buffer for storing the encoded stream of bits based, at least in part, on a minimum supported code rate and a control information size, and performing rate-matching on stored encoded stream of bits based, at least in part, on a mother code size, N, and a number of coded bits for transmission, E.

公开(公告)号：SG11202100399QA

公开(公告)日：2021-03-30

申请号：SG11202100399Q

申请日：2019-08-20

Applicant: QUALCOMM INC

Inventor： ANG PETER PUI LOK ,  WU GAOJIN ,  MOHSENI JAFAR ,  XU HUILIN ,  HE LINHAI

IPC: H04W72/04

Abstract: In the examples described herein, a user equipment (UE) may identify multiple carriers configured for communications with a base station, and the UE may group the carriers into one or more preferred groups for synchronized scheduling at the base station. The preferred groups of carriers for synchronized scheduling may represent a recommendation that carriers within a preferred group are to be scheduled for communications with the base station on at least partially overlapping resources to maximize power savings at the UE. The UE may transmit an indication of the preferred groups of carriers to the base station, and the base station may identify an actual group of carriers for synchronized scheduling based on the indication received from the UE. The base station may then schedule communications with the UE based on the actual group of carriers.

公开(公告)号：CA3060016A1

公开(公告)日：2018-11-22

申请号：CA3060016

申请日：2017-05-15

Applicant: QUALCOMM INC

Inventor： SARKIS GABI ,  SANKAR HARI ,  WU GAOJIN ,  XU CHANGLONG ,  JIANG JING ,  LOU HUANG

IPC: H03M13/33

Abstract: Techniques are described herein to terminate a list decoding operation before its completion based on performing one or more error check processes. A transmitted codeword encoded using a polar code may include one or more error check vectors interspersed with one or more information vectors. Upon receiving the codeword, a decoder may perform a list decoding operation on the received codeword. Upon decoding one of the error check vectors, the decoder may determine whether at least one candidate path used in the successive cancellation list decoding operation passes an error check process based on the error check vector. If no candidate paths satisfy the error check process, the decoder may terminate the list decoding operation. In some examples, the decoder may recheck whether candidate paths satisfy the error check operation at intermediate positions between error check vectors. Such rechecking may occur while decoding information vectors.