公开(公告)号：SG11202003334UA

公开(公告)日：2020-05-28

申请号：SG11202003334U

申请日：2018-09-24

Applicant: QUALCOMM INC

Inventor： CHEN KAI ,  XU CHANGLONG ,  JIANG JING ,  SARKIS GABI ,  XU HAO

IPC: H03M13/09 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, wireless devices may encode and decode transmissions using polar codes. A transmitting device may encode a payload based on a selected payload size. For example, the transmitting device may construct a bit vector including payload bits, parity bits, frozen bits, or some combination of these, and may modify the bits or the order of the bits based on the selected payload size. The device may generate a polar-encoded codeword based on this bit vector, and may transmit the polar-encoded codeword to a receiving device. The receiving device may blind decode the polar-encoded codeword, and may determine the correct payload size based on the decoded bit vector. For example, the device may perform decoding or may check decoded bits based on a payload size hypothesis, where the decoding may fail for any incorrect payload size hypothesis.

公开(公告)号：IN851MUN2014A

公开(公告)日：2015-04-17

申请号：IN851MUN2014

申请日：2014-05-06

Applicant: QUALCOMM INC

Inventor： COHEN ETAN GUR ,  CHEN KAI

IPC: H04L1/18 ,  H04L45/247 ,  H04L45/125 ,  H04L45/24

Abstract: System and method for switching a stream to a new transmission medium. A first stream may be received. A first plurality of packets of the first stream may be transmitted to a second device on a first transmission medium. The first plurality of packets may include one or more index marker packets. It may be determined that at least a portion of the first plurality of packets may not have been received by the second device. A second plurality of packets of the first stream may be transmitted to the second device on a second transmission medium. The second plurality of packets may include at least a subset of the first plurality of packets and at least a subset of the one or more index marker packets. The one or more index marker packets may be configured for use by the second device to detect and discard duplicate packets.

公开(公告)号：SG11202003769TA

公开(公告)日：2020-07-29

申请号：SG11202003769T

申请日：2017-12-13

Applicant: QUALCOMM INC

Inventor： XU CHANGLONG ,  WU LIANGMING ,  CHEN KAI ,  XU HAO ,  JIANG JING ,  SUN JING ,  SORIAGA JOSEPH BINAMIRA

IPC: H04L1/06

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device such as a user equipment (UE) may monitor a search space of a control channel for at least one downlink transmission. The UE may perform a plurality of decoding operations on a plurality of decoding candidates associated with the downlink control information format transmitted in a plurality of transmission time intervals (TTIs). In some cases, the plurality of decoding operations may comprise performing a first decoding on a first decoding candidate received in a current TTI, the first decoding operation applying a first descrambling code to the first decoding candidate, and performing a second decoding operation on a combined decoding candidate that comprises soft combined information from the first and second decoding candidate, the second decoding candidate received in a prior TTI.

公开(公告)号：SG11202003268VA

公开(公告)日：2020-05-28

申请号：SG11202003268V

申请日：2018-11-14

Applicant: QUALCOMM INC

Inventor： WU LIANGMING ,  XU CHANGLONG ,  JIANG JING ,  SARKIS GABI ,  ZHANG YU ,  CHEN KAI

IPC: H03M13/09

Abstract: Certain aspects of the present disclosure generally relate to wireless communications and, more particularly, to methods and apparatus for segmenting uplink control information prior for encoding using a polar code prior to transmission. An exemplary method that may be performed by a wireless device generally includes iteratively segmenting a group of K information bits into a plurality of segments, encoding the information bits of each of the plurality of segments using a polar code to generate a plurality of encoded segments, and transmitting the plurality of encoded segments.

公开(公告)号：SG11202002643XA

公开(公告)日：2020-05-28

申请号：SG11202002643X

申请日：2018-09-21

Applicant: QUALCOMM INC

Inventor： CHEN KAI ,  WU LIANGMING ,  XU CHANGLONG ,  JIANG JING ,  XU HAO

IPC: H04L1/00 ,  H03M13/09 ,  H03M13/13

Abstract: Certain aspects of the present disclosure generally relate to techniques for encoding and decoding bits of information using cyclic redundancy check (CRC) concatenated polar encoding and decoding. A method generally includes obtaining the bits of information to be transmitted. The method includes performing CRC outer encoding of the bits of information using an even-weighted generator polynomial to produce CRC encoded bits. The method includes performing polar inner encoding of the CRC encoded bits to generate a codeword. The method includes discarding a first code bit at a beginning of the codeword. The shortened codeword is transmitted over a wireless medium. In another method, bit-level scrambling is performed on the CRC encoded bits before the polar encoding to. In another method, only odd-weighted generator polynomials are selected.

公开(公告)号：SG11202003425UA

公开(公告)日：2020-06-29

申请号：SG11202003425U

申请日：2018-10-02

Applicant: QUALCOMM INC

Inventor： LI JIAN ,  XU CHANGLONG ,  CHEN KAI ,  WU LIANGMING ,  JIANG JING ,  XU HAO

IPC: H04L1/00

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may perform a first transmission of a communication that is encoded using a polar coding technique; and perform at least one retransmission of the communication, wherein more resources are allocated for the at least one retransmission than for the first transmission, and wherein the at least one retransmission includes an incremental redundancy version of the communication and a version of the communication for Chase combination. Numerous other aspects are provided.