公开(公告)号：US20210152191A1

公开(公告)日：2021-05-20

申请号：US16605911

申请日：2017-05-15

Applicant: Qualcomm Incorporated

Inventor： Gabi Sarkis ,  Hari Sankar ,  Gaojin Wu ,  Changlong Xu ,  Jing Jiang ,  Huang Lou

IPC: H03M13/37 ,  H03M13/13

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.

公开(公告)号：US11233530B2

公开(公告)日：2022-01-25

申请号：US16475344

申请日：2017-06-29

Applicant: QUALCOMM Incorporated

Inventor： Gaojin Wu ,  Chao Wei ,  Jing Jiang

IPC: H03M13/25 ,  H04W76/11 ,  H03M13/13 ,  H04W72/04

Abstract: Wireless communication devices are adapted to facilitate information sequences included in frozen sub-channels of polar coded transmissions. According to one example, an apparatus can generate a mask sequence based on a plurality of parameters, including at least one of a transmitting-device-specific sequence or a receiving-device-specific sequence. In some examples, the frozen bits may be masked with the mask sequence, and an information block may be encoded utilizing polar coding. In other examples, the mask sequence may be compared to the frozen bits of a received information block, and the received information block may be determined as intended for the apparatus when the mask sequence matches to the frozen bits. Other aspects, embodiments, and features are also included.

公开(公告)号：US11743909B2

公开(公告)日：2023-08-29

申请号：US17262786

申请日：2019-08-20

Applicant: Qualcomm Incorporated

Inventor： Peter Pui Lok Ang ,  Gaojin Wu ,  Jafar Mohseni ,  Huilin Xu ,  Linhai He

IPC: H04W72/23 ,  H04L27/26 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1263 ,  H04W72/50

CPC classification number: H04W72/23 ,  H04L27/26025 ,  H04W72/0446 ,  H04W72/0453 ,  H04W72/1263 ,  H04W72/535

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：US11533128B2

公开(公告)日：2022-12-20

申请号：US16468622

申请日：2018-01-08

Applicant: QUALCOMM Incorporated

Inventor： Changlong Xu ,  Chao Wei ,  Jing Jiang ,  Gaojin Wu ,  Hari Sankar ,  Jilei Hou

IPC: H04L1/00 ,  H03M13/13 ,  H03M13/00 ,  H04L5/00

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：US11063613B2

公开(公告)日：2021-07-13

申请号：US16605911

申请日：2017-05-15

Applicant: Qualcomm Incorporated

Inventor： Gabi Sarkis ,  Hari Sankar ,  Gaojin Wu ,  Changlong Xu ,  Jing Jiang ,  Huang Lou

IPC: H03M13/37 ,  H03M13/13

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.