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公开(公告)号：US11031983B2
公开(公告)日：2021-06-08
申请号：US15741196
申请日：2015-08-14
Applicant: QUALCOMM Incorporated
IPC: H04B7/0456 , H04B7/06 , H04W24/10
Abstract: Methods, systems, and devices are described for wireless communication. The UE may identify, at a user equipment (UE), a codebook type indicator (CTI) that indicates a codebook among a set of codebooks, such that the codebook may be associated with a two-dimensional antenna port structure of a base station, select a precoding matrix indicator (PMI) based on the CTI, and transmit a channel state information (CSI) report including the PMI. The UE may also receive, at a UE, a first antenna port configuration parameter associated with an antenna port structure of a base station, determine, based on the first antenna port configuration parameter, a second antenna port configuration parameter associated with the antenna port structure, then transmit or receiving data at the UE based on the first antenna port configuration parameter and the second antenna port configuration parameter.
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282.发明授权公开(公告)号：US10944517B2
公开(公告)日：2021-03-09
申请号：US16078480
申请日：2016-11-04
Applicant: Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei , QUALCOMM Incorporated
Inventor： Jian Li , Changlong Xu , Jilei Hou , Neng Wang , Chao Wei
Abstract: For communication utilizing polar codes, a hybrid automatic repeat request algorithm utilizing incremental redundancy (HARQ-IR) may provide increased throughput by including new data, not based on an original transmission, in a HARQ retransmission. The number of retransmitted bits and new information bits in each HARQ retransmission may be controlled in order to manage a tradeoff between increased throughput and a decreased block error rate (BLER).
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公开(公告)号：US10721029B2
公开(公告)日：2020-07-21
申请号：US16091081
申请日：2017-03-03
Applicant: QUALCOMM Incorporated
Inventor： Changlong Xu , Jian Li , Chao Wei , Neng Wang , Jilei Hou
Abstract: The present disclosure describes a method, an apparatus, and a computer readable medium for hybrid automatic repeat request (HARQ) transmissions. For example, the method may include generating a first codeword for a first information block, wherein the first codeword is a first polar code, and wherein the first information block includes cyclic redundancy check (CRC) bits; transmitting the first codeword to a receiver; determining that the first polar code is not successfully decoded at the receiver based at least on a first message received from the receiver; generating a second codeword for a second information block, wherein the second codeword is a first enhanced polar code, and wherein the second information block does not include any CRC bits; transmitting the second codeword to the receiver; and determining that the second codeword and the first codeword are successfully decoded at the receiver based at least on a second message received from the receiver.
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公开(公告)号：US20200220600A1
公开(公告)日：2020-07-09
申请号：US16822711
申请日：2020-03-18
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Yu Zhang , Wanshi Chen , Peter Gaal
IPC: H04B7/06 , H04B7/0417 , H04B7/08 , H04L1/00
Abstract: Channel state information (CSI) operations are disclosed with regard to elevation beamforming (EB)/full dimension (FD) multiple input, multiple output (ED/FD-MIMO) operations. With CSI processing associated with multiple CSI-reference signal (CSI-RS) resources, ambiguities may arise in determining the CSI reporting type and rank. CSI reporting type may be determined using a last reported beam selection indicator (BI) or, in the absence of a BI, may be determined according to a predefined rule. When rank and BI are reported separately and rank is absent, user equipment may determine a default reference rank for CSI reporting based on either or both of previously reported rank or BI. When rank and BI are jointly reported, encoding schemes with fixed bitwidths determined based on either CSI-RS processes or resources may be used to enhance decoding. CSI-RS antenna ports, processes, or resources may also be used in determining application of CSI processing relaxation.
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公开(公告)号：US20200100214A1
公开(公告)日：2020-03-26
申请号：US16467454
申请日：2018-01-24
Applicant: Chao WEI , Jilei HOU , Changlong XU , Jian LI , Qualcomm Incorporated
Inventor： Chao Wei , Changlong Xu , Jilei Hou , Jian Li
Abstract: Methods, systems, and devices for wireless communication are described. In order to exchange data over a given wireless communication network, a wireless device may first perform a cell acquisition procedure (e.g., to determine cell-specific information such as timing and frequency offsets, bandwidth, control channel formatting, etc.). In some systems, aspects of the timing information may be conveyed with scrambling codes applied to a master information block (MIB). Physical broadcast channel (PBCH) payloads, including MIB transmissions, may be jointly encoded with synchronization signal indices. Bursts of MIB transmissions may thus be decoded without blind decoding while maintaining error protection and low latency that may be necessary to obtain critical system information within the MIB.
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Patent Agency Ranking
公开(公告)号：US20190372712A1
公开(公告)日：2019-12-05
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
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.
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公开(公告)号：US10469139B2
公开(公告)日：2019-11-05
申请号：US15029498
申请日：2013-10-18
Applicant: QUALCOMM Incorporated
IPC: H04B7/0417 , H04B7/0456 , H04B7/06 , H04L5/00 , H04W72/04
Abstract: In an aspect, a method of wireless communication includes transmitting first reference signals from a base station using a first set of antenna ports, and receiving first feedback information at the base station from a user equipment (UE). The first feedback information may be associated with the first reference signals. The method includes configuring a first precoder based on the first feedback information, and transmitting second reference signals to the UE based on the configuration of the first precoder. The method includes receiving second feedback information at the base station from the UE. The second feedback information may be associated with the second reference signals. The method includes configuring a second precoder based on the second feedback information.
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公开(公告)号：US10367632B2
公开(公告)日：2019-07-30
申请号：US15546219
申请日：2016-03-04
Applicant: Peng Cheng , Yin Huang , Neng Wang , Chao Wei , QUALCOMM Incorporated
Inventor： Peng Cheng , Yin Huang , Neng Wang , Chao Wei
Abstract: Aspects described herein generally relate to communicating between a user equipment (UE) and a cell using frequency division duplexing (FDD) to separate an uplink frequency band and a downlink frequency band with the cell. An indicator can be transmitted from the cell and received by the UE to implement time division duplexing (TDD) on the uplink frequency band. Based at least in part on the indicator, communicating between the UE and the cell can include separating the uplink frequency band into a plurality of downlink subframes for receiving downlink communications from the cell and a plurality of uplink subframes for transmitting uplink communications to the cell.
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公开(公告)号：US10341072B2
公开(公告)日：2019-07-02
申请号：US15513713
申请日：2015-09-30
Applicant: QUALCOMM Incorporated
IPC: H04B7/00 , H04L5/00 , H04L1/00 , H04L1/18 , H04B7/06 , H04B7/0456 , H04W72/04 , H04W88/02 , H04W88/08
Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE. The UE receives RSs from a base station. The UE determines, based on the RSs, a second CSI indicator indicating a first precoding configuration of the base station optimized to at least one of improve signal power or reduce interference in an elevation dimension. The UE determines, based on the RSs, a second CSI indicator indicating a second precoding configuration of the base station optimized to at least one of improve the signal power or reduce interference in an azimuth dimension. The UE transmits, to the base station, a first CSI report including at least the first CSI indicator.
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公开(公告)号：US10285171B2
公开(公告)日：2019-05-07
申请号：US15738990
申请日：2016-07-01
Applicant: QUALCOMM Incorporated
Inventor： Chao Wei , Wanshi Chen , Peter Gaal , Jilei Hou
Abstract: The present disclosure, for example, generally relates to wireless communication systems, and more particularly to techniques for flexible duplexing in such systems. For example, a technique for flexible duplexing provides a reference configuration that determines characteristics for paired frequency division duplexing (FDD) bands when the uplink band is temporarily reconfigured for time division duplexing (TDD) use. A user equipment (UE) may use the reference configuration to determine hybrid automatic repeat request (HARQ) timing, schedule uplink transmissions, manage a soft buffer, and determine signaling formats. In an aspect, the UE may receive a reconfiguration message indicating a change for an FDD uplink band to a temporary TDD band. The UE may then determine a reference configuration for a pair of FDD bands including an FDD downlink band and the temporary TDD band, the reference configuration indicating a pattern of sub-frames associated with the pair of FDD bands.
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