公开(公告)号：US20230072061A1

公开(公告)日：2023-03-09

申请号：US17760307

申请日：2020-04-07

Applicant: QUALCOMM Incorporated

Inventor： Fojian ZHENG ,  Jian LI ,  Chaofeng HUI ,  Quanling ZHANG ,  Hao ZHANG

IPC: H04W52/02

Abstract: Embodiments include systems and methods for enabling fast recovery by a user equipment (UE) from packet switched (PS) call failure in a fifth generation (5G) non-standalone (NSA) network. Various embodiments for recovering from PS call failure in a 5G NSA network may include determining whether a total number of Evolved Packet System (EPS) bearer deactivation requests received from a base station of a 5G NSA network during a time period exceeds a maximum counter value, and disabling 5G data calls on the UE in response to determining that the total number of EPS bearer deactivation requests received from the base station of the 5G NSA network during the time period exceeds the maximum counter value.

公开(公告)号：US20230055302A1

公开(公告)日：2023-02-23

申请号：US17797382

申请日：2020-03-27

Applicant: QUALCOMM INCORPORATED

Inventor： Liangming WU ,  Kangqi LIU ,  Changlong XU ,  Jian LI ,  Hao XU

IPC: H04B7/0452 ,  H04L1/16

Abstract: Methods, systems, and devices for wireless communications are described. A base station may transmit an encoded transmission via a broadcast to multiple user equipment (UE). Subsequently, the multiple UEs may transmit assistance information to the base station based on attempting to decode the broadcasted encoded transmission. If the decoding is unsuccessful for at least one UE, the base station may then transmit an additional encoded transmission via a unicast or multicast message to the UEs that were unsuccessful. Additionally, the base station may transmit configuration information for the multiple UEs to receive the encoded transmissions and to transmit the assistance information. For example, the configuration information may include portion information for how long the encoded transmission is transmitted via the broadcast, via the unicast, when to transmit the assistance information, etc. In some cases, the configuration information may be based on UE metrics of the multiple UEs.

公开(公告)号：US20210152187A1

公开(公告)日：2021-05-20

申请号：US16628209

申请日：2017-08-04

Applicant: Jian LI ,  Changlong XU ,  Jing JIANG ,  Hao XU ,  Jilei HOU ,  QUALCOMM Incorporated

Inventor： Jian LI ,  Changlong XU ,  Jing JIANG ,  Hao XU ,  Jilei HOU

IPC: H03M13/27 ,  H03M13/00 ,  H03M13/15 ,  H03M13/29

Abstract: Aspects of the disclosure relate to wireless communication devices configured to encode information blocks to produce code blocks and interleave the code blocks utilizing an interleaver including a plurality of rows and a plurality of columns. In some examples, the interleaver includes a right isosceles triangle-shaped matrix of rows and columns. In other examples, the interleaver includes a rectangle-shaped matrix of rows and columns.

公开(公告)号：US20200052819A1

公开(公告)日：2020-02-13

申请号：US16344395

申请日：2017-06-22

Applicant: Changlong XU ,  Jian LI ,  Joseph Binamira SORIAGA ,  Jilei HOU ,  QUALCOMM Incorporated

Inventor： Changlong XU ,  Jian LI ,  Joseph Binamira SORIAGA ,  Jilei HOU

IPC: H04L1/00 ,  H04L1/20

Abstract: Various aspects of the disclosure relate to retransmission techniques for communication of information (e.g., for wireless communication). In some aspects, if a device's first transmission including punctured encoded data fails, the device's second transmission (e.g., in response to a NAK) may involve transmitting the punctured bits. In some aspects, the coding rate used for encoding the data for the first transmission is selected to meet an error rate (e.g., a block error rate) for the second transmission. The second transmission may also include at least some of the encoded data. In some aspects, the puncturing may be performed according to a puncture pattern that is generated based on bit error probabilities of bit positions for encoded data.

公开(公告)号：US20190268022A1

公开(公告)日：2019-08-29

申请号：US16320038

申请日：2017-06-26

Applicant: Changlong XU ,  Jian LI ,  Jilei HOU ,  Chao WEI ,  QUALCOMM INCORPORATED

Inventor： Changlong XU ,  Jian LI ,  Jilei HOU ,  Chao WEI

IPC: H03M13/13 ,  H03M13/35 ,  H04L1/00 ,  H04L1/18 ,  H04B17/336

Abstract: Methods and apparatus for constructing polar codes are provided. A transmitter determines at least one set of parameters corresponding to data to be transmitted, and a set of sorting indices corresponding to bits of the data to be transmitted based on the set of parameters, the set of sorting indices indicating a position set of the bits to be transmitted. The transmitter polar encodes the data based at least on the set of parameters and the set of sorting indices to generate a coded block of the data, and transmits the coded block of the data.

公开(公告)号：US20240121035A1

公开(公告)日：2024-04-11

申请号：US18263671

申请日：2021-03-09

Applicant: QUALCOMM INCORPORATED

Inventor： Kexin XIAO ,  Liangming WU ,  Changlong XU ,  Kangqi LIU ,  Jian LI ,  Hao XU ,  Ruiming ZHENG ,  Wei LIU

IPC: H04L1/1867

CPC classification number: H04L1/189 ,  H04L1/1874

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a wireless device may In use non-uniformly distributed bits for amplitude mapping and uniformly distributed bits for sign mapping to support probabilistic constellation shaping (PCS) for transmission of a message. To provide a coding gain with one or more retransmissions of the message, the device may configure redundancy versions based on the non-uniform distribution of one or more symbols. In some examples, the device may include the same set of non-uniformly distributed systematic bits or at least a portion of non-uniformly distributed systematic bits in each redundancy version of the message. Additionally or alternatively, the device may use multiple modulation and coding scheme (MCS) values to modulate one or more of the redundancy versions, where a first MCS value is used to modulate non-uniformly distributed symbols and a second MCS value is used to modulate uniformly distributed symbols.

公开(公告)号：US20240022974A1

公开(公告)日：2024-01-18

申请号：US18250919

申请日：2020-12-14

Applicant: QUALCOMM Incorporated

Inventor： Hao ZHANG ,  Fojian ZHANG ,  Yi LIU ,  Xianghua CHEN ,  Wei HE ,  Yan WANG ,  Jian LI ,  Jing ZHOU

IPC: H04W36/00 ,  H04W36/14

CPC classification number: H04W36/0069 ,  H04W36/14

Abstract: Disclosed are techniques for wireless communication. In an aspect, a subscriber identity module (SIM) dual standby (DSDS) user equipment (UE) may transition a packet data session from a first radio access technology (RAT) associated with a first subscription to a second RAT associated with a second subscription, and may further transmit, over the first RAT responsive to the packet data session transition to the second RAT, one or more messages to tear down the packet data session over the first RAT.

公开(公告)号：US20230403123A1

公开(公告)日：2023-12-14

申请号：US18044973

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Liangming WU ,  Changlong XU ,  Jian LI ,  Kangqi LIU ,  Kexin XIAO ,  Hao XU

IPC: H04L5/00 ,  H04L27/34

CPC classification number: H04L5/0094 ,  H04L27/3483

Abstract: Methods, systems, and devices for wireless communication at a user equipment (UE) are described. A user equipment (UE) may receive a configuration indicating a mapping between a set of multiple subband indices and a set of multiple encoding parameter sets. The UE may apply, at a first distribution matcher, a first encoding parameter set to a first subset of a bit stream. The UE may also apply, at a second distribution matcher, a second encoding parameter set to a second subset of the bit stream. The a first encoding parameter set may be associated with a first subband index and the second encoding parameter set may be associated with a second subband index. The UE may then transmit a first modulated bit stream on a first subband, and a second modulated bit stream on a second subband.

公开(公告)号：US20230344547A1

公开(公告)日：2023-10-26

申请号：US17796393

申请日：2020-03-24

Applicant: Kangqi LIU ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU ,  QUALCOMM Incorporated

Inventor： Kangqi LIU ,  Jian LI ,  Changlong XU ,  Liangming WU ,  Hao XU

IPC: H04L1/00

CPC classification number: H04L1/0002 ,  H04L1/0034

Abstract: Aspects described herein relate to encoding wireless communications using feedback from receiving devices to achieve an adaptive coding rate, which can include generating, for a set of source symbols representing data to be transmitted in a broadcast channel, a set of encoded symbols for transmitting in the broadcast channel, transmitting a first number of the set of encoded symbols over the broadcast channel, requesting, based on transmitting the first number of the set of encoded symbols, feedback from a set of user equipment (UEs), and determining, based at least in part on the feedback, whether to continue transmitting a second number of the set of encoded symbols or begin transmitting a new set of encoded symbols representing new data to be transmitted in the broadcast channel.

公开(公告)号：US20230283411A1

公开(公告)日：2023-09-07

申请号：US18004652

申请日：2021-07-23

Applicant: QUALCOMM Incorporated

Inventor： Ruiming ZHENG ,  Changlong XU ,  Jian LI ,  Kangqi LIU ,  Liangming WU ,  Peng CHENG ,  Hao XU ,  Xipeng ZHU

IPC: H04L1/1829 ,  H04L1/1607

CPC classification number: H04L1/1848 ,  H04L1/1685

Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may encode, at a layer two (L2) layer of the transmitting device, a set of service data units (SDUs) according to a set of network coding parameters to obtain a first set of protocol data units (PDUs). The transmitting device may transmit, to one or more receiving devices, the first set of PDUs. The transmitting device may receive, from a receiving device of the one or more receiving devices, a report indicating an SDU of the set of SDUs that was unsuccessfully received at the receiving device. The transmitting device may transmit, to the one or more receiving devices, based at least in part on the received report, a second set of one or more PDUs corresponding to at least the SDU of the set of SDUs.