公开(公告)号：US10862625B2

公开(公告)日：2020-12-08

申请号：US16476890

申请日：2018-02-17

Applicant: Qualcomm Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Changlong Xu ,  Gabi Sarkis ,  Chao Wei ,  Hari Sankar ,  Jian Li ,  Joseph Binamira Soriaga

IPC: H04L1/00 ,  H04L1/16 ,  H04L5/00 ,  H03M13/00

Abstract: Techniques are described for wireless communication. One method includes identifying a set of punctured bit locations in a received codeword. The received codeword is encoded using a polar code. The method also includes identifying a set of information bit locations of the polar code, with the set of information bit locations being determined based at least in part on polarization weights per polarized bit-channel of a polar code decoder that are a function of nulled repetition operations per polarization stage of the polar code identified based at least in part on the set of punctured bit locations. The method further includes processing the received codeword using the polar code decoder to obtain an information bit vector at the set of information bit locations.

公开(公告)号：US10791548B2

公开(公告)日：2020-09-29

申请号：US15291666

申请日：2016-10-12

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Tao Luo ,  Peter Pui Lok Ang ,  Jing Jiang

IPC: H04W72/04 ,  H04L5/00

Abstract: Aspects of the present disclosure provide various flexible search space designs that can handle UEs with various capabilities and limitations. In some aspects of the disclosure, the downlink bandwidth may be divided into several self-contained sub-bands. Each sub-band may include one or more OFDM subcarriers or tones, and each UE may be configured to monitor one or more of the sub-bands for its downlink control channel. The sub-band is self-contained in such a way that each sub-band includes CCEs that are mapped to resource elements contained in the same sub-band. In some aspects of the disclosure, different sub-bands can be configured with the different transmission modes and pilot densities. The transmission mode, pilot density, and layer-ID may be determined as a function of each UE's search space.

公开(公告)号：US10785736B2

公开(公告)日：2020-09-22

申请号：US15663610

申请日：2017-07-28

Applicant: QUALCOMM Incorporated

Inventor： Jing Jiang ,  Hao Xu ,  Wanshi Chen ,  June Namgoong ,  Yang Yang ,  Haitong Sun ,  Alexandros Manolakos ,  Tingfang Ji

IPC: H04W56/00 ,  H04L27/26 ,  H04L27/00 ,  H04L7/04 ,  H04W16/14 ,  H04W84/04 ,  H04J3/06 ,  H04L27/38 ,  H04W36/00 ,  H04W52/02

Abstract: Aspects of the disclosure relate to a coexistence of a first radio access technology (RAT), such as a fifth generation (5G) new radio (NR) technology with a second RAT, such as a narrow-band internet-of-things (NB-IOT) technology. In a first aspect, a 5G NR resource block size and an NB-IOT resource block size are defined, and a compatible alignment of an NB-IOT resource block and a 5G NR resource block is identified. An offset associated with the compatible alignment is then determined in which the offset is within a threshold offset and facilitates an identification of a valid NB-IOT resource block. In a second aspect, an offset associated with a compatible alignment of a 5G NR resource block and an NB-IOT resource block is ascertained, and a channel raster is shifted according to the offset associated with the compatible alignment.

公开(公告)号：US10757690B2

公开(公告)日：2020-08-25

申请号：US15593237

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Jing Jiang ,  Wanshi Chen ,  Peter Pui Lok Ang ,  Tao Luo ,  Yang Yang ,  Jamie Menjay Lin

IPC: H04W72/04 ,  H04L1/00

Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide piggyback downlink control information within the physical downlink shared channel (PDSCH). A first downlink control information portion may be transmitted within the physical downlink control channel (PDCCH) and may include information indicating a size of a second downlink control information portion transmitted within the PDSCH.

公开(公告)号：US10756846B2

公开(公告)日：2020-08-25

申请号：US15920276

申请日：2018-03-13

Applicant: QUALCOMM Incorporated

Inventor： Jamie Menjay Lin ,  Yang Yang ,  Gabi Sarkis

IPC: H04L1/00 ,  H03M13/37 ,  H03M13/13 ,  H03M13/00

Abstract: A wireless device may decode a polar coded codeword using a successive cancellation list (SCL) decoder. The decoder may implement a distributed feedback architecture, where the decoder stores one or more state maps and a set of bit arrays in memory for each layer of decoding. For different phases of decoding in a layer, the decoder may update the state maps and sets of bit arrays to limit the resources used. Additionally, when performing bit updating following the decoding of a bit of the codeword, the decoder may not update each layer of the decoding process. Instead, each sub-decoder may send a state map up to the calling layer for bit updating when the sub-decoder has completed its invocation, and may not return any intermediate state maps prior to completing invocation. Thus, each decoder and sub-decoder may perform bit updating just twice, reducing the complexity and latency of decoding.

公开(公告)号：US10728895B2

公开(公告)日：2020-07-28

申请号：US16201303

申请日：2018-11-27

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Heechoon Lee ,  Yang Yang

IPC: H04L5/14 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a time division duplexing (TDD) multi-slot slot format indicator (SFI) for a set of slots. The UE may identify that the UE is operating in a frequency division duplexing (FDD) mode. The UE may determine, based on the FDD mode and the TDD multi-slot SFI, a downlink slot format and an uplink slot format for a subset of the set of slots.

公开(公告)号：US20200220761A1

公开(公告)日：2020-07-09

申请号：US16827493

申请日：2020-03-23

Applicant: Qualcomm Incorporated

Inventor： Wooseok Nam ,  Tao Luo ,  Alexandros Manolakos ,  Heechoon Lee ,  Yang Yang ,  Peter Gaal

IPC: H04L27/26 ,  H04L5/00 ,  H04W52/02

Abstract: Methods, systems, and devices for wireless communications are described for configuration aspects of a tracking reference signal in New Radio. A base station may select a first burst duration and a second burst duration for a tracking reference signal (TRS) burst, the first burst duration being different from the second burst duration, and may transmit configuration information indicating the first burst duration and the second burst duration to a user equipment (UE). The base station may transmit a first TRS burst having the first burst duration and a second TRS burst having the second burst duration. The UE may detect the first TRS burst having the first burst duration and the second TRS burst having the second burst duration based at least in part on the configuration information, and perform resource tracking based at least in part on the detected first TRS burst and the second TRS burst.

公开(公告)号：US10554462B2

公开(公告)日：2020-02-04

申请号：US15251946

申请日：2016-08-30

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Tao Luo ,  Hung Ly

IPC: H04L27/26 ,  H04W56/00

Abstract: Various aspects provide for communicating a first set of broadcast reference signals (RSs) in a first subframe that includes a synchronization (SYNC) channel and communicating a second set of broadcast RSs in a second subframe that follows the first subframe. The second subframe may immediately follow the first subframe. A portion of the SYNC channel may include information indicating a configuration of broadcast RSs in one or more other subframes. The brhoadcast RSs may be configured for timing-error estimation, frequency-error estimation, and/or channel estimation. Additional and alternative aspects, embodiments, and features are also provided herein.

公开(公告)号：US10477466B2

公开(公告)日：2019-11-12

申请号：US16104726

申请日：2018-08-17

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Jing Jiang ,  Yang Yang ,  June Namgoong

IPC: H04L5/00 ,  H04W8/00 ,  H04J11/00 ,  H04W48/00 ,  H04W48/08 ,  H04W48/10 ,  H04W48/14 ,  H04W48/16

Abstract: Aspects of the present disclosure describe discovering physical cell identifiers in wireless communications. It can be determined to discover a physical cell identifier of one or more cells in a zone based at least in part on detecting a condition. A cell-specific signal can be received from at least one cell of the one or more cells in the zone. The cell-specific signal can be associated with one of a plurality of possible scrambling codes or sequences. The physical cell identifier of the at least one cell can be determined as one of a plurality of physical cell identifiers that corresponds to the one of the plurality of possible scrambling codes or sequences.

公开(公告)号：US10432357B2

公开(公告)日：2019-10-01

申请号：US15818393

申请日：2017-11-20

Applicant: QUALCOMM Incorporated

Inventor： Yang Yang ,  Jing Jiang ,  Gabi Sarkis

IPC: H03M13/00 ,  H04L1/00 ,  H03M13/13 ,  H03M13/39 ,  H04W72/04

Abstract: Methods, systems, and devices that support an efficient sequence-based polar code description are described. In some cases, a wireless device (e.g., a user equipment (UE) or a base station) may transmit a codeword including a set of information bits encoded using a polar code or receive a codeword including a set of information bits encoded using a polar code. As described herein, the wireless device may determine the bit locations of the information bits in the polar code based on a partition assignment vector. Specifically, the wireless device may partition bit-channels for one or more stages of polarization and assign information bits to partitions based on the partition assignment vector. Once the bit locations of the information bits are determined, the wireless device may decode a received codeword or transmit an encoded codeword based on the determined bit locations of the information bits.