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公开(公告)号：US10813060B2
公开(公告)日：2020-10-20
申请号：US16250651
申请日：2019-01-17
Applicant: QUALCOMM Incorporated
Inventor： Xiao Feng Wang , Tao Luo , Wanshi Chen , Peter Gaal , Sony Akkarakaran , Yi Huang , Renqiu Wang
Abstract: A method and apparatus are provided for generating and reporting a reference power headroom report (PHR) for New Radio (NR). A user equipment (UE) decides to report a reference power headroom (PH) for at least one carrier frequency in a transmission time interval (TTI). The UE determines at least one of an index (j) of a target received power of a Physical Uplink Shared Channel (PUSCH) to be transmitted in the TTI and a path loss scaling factor, an index (qd) of a reference signal used for measuring path loss for the carrier frequency, or an index (l) of a power control process used for the carrier frequency. The UE then calculates the reference PH based on one or more of the determined at least one index, and reports, in the TTI, a PHR including the reference PH for the carrier frequency.
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32.发明授权公开(公告)号：US10797748B2
公开(公告)日：2020-10-06
申请号：US16279953
申请日：2019-02-19
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Jing Lei , Renqiu Wang , Joseph Binamira Soriaga , Naga Bhushan , Tingfang Ji
Abstract: Methods, systems, and devices for wireless communications are described that support pairwise cross correlation sequences for non-orthogonal multiple access wireless communications. A user equipment (UE) may receive, from a base station, an indication of a spreading factor and a number of transmitters in a group of non-orthogonal multiple access (NOMA) transmitters configured for concurrent transmissions. The UE may determine, based on the spreading factor and the number of transmitters, a first spreading sequence of a set of spreading sequences from a first codebook, the first spreading sequence having a defined value for pairwise cross correlation with each spreading sequence of the plurality of spreading sequences. The first UE may identify data to be transmitted in an uplink transmission, apply the first spreading sequence to the data to be transmitted in the uplink transmission, and transmit the uplink transmission to the base station.
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33.发明授权公开(公告)号：US10736093B2
公开(公告)日：2020-08-04
申请号：US16215493
申请日：2018-12-10
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Tao Luo , Wanshi Chen , Hao Xu , Peter Gaal , Yi Huang , Renqiu Wang , Seyong Park
Abstract: Aspects of the disclosure relate to wireless communication systems configured to provide techniques for strategically placing a sounding reference signal (SRS) within a slot to improve the decoding timeline. Aspects of the disclosure further relate to wireless communication systems configured to optimize the physical downlink control channel (PDCCH) search space within a slot to improve the decoding timeline. Features may also include placing the SRS near the end of the slot, such as after the uplink user data traffic and the corresponding uplink demodulation reference signal (DMRS). In addition, features may also include identifying the PDCCH search space within the slot based on at least a slot index of the slot. Other aspects, embodiments, and features are also claimed and described.
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公开(公告)号：US20200229063A1
公开(公告)日：2020-07-16
申请号：US16833239
申请日：2020-03-27
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Madhavan Srinivasan Vajapeyam , Hao Xu , Wanshi Chen , Peter Gaal
Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.
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公开(公告)号：US10594532B2
公开(公告)日：2020-03-17
申请号：US16228168
申请日：2018-12-20
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Hao Xu , Jing Jiang , Yi Huang , Wei Zeng , Wanshi Chen , Tingfang Ji
IPC: H04L27/26 , H04B7/0404 , H04B7/06 , H04B7/0413 , H04B7/0417 , H04B7/0456 , H04J13/12
Abstract: A configurable new radio (NR) uplink (UL) transmission may use transmit diversity. A user equipment (UE) may identify an uplink transmission of at least one stream as using one of cyclic prefix orthogonal frequency division multiplexing or discrete Fourier transform spread orthogonal frequency division multiplexing. The UE may apply a precoding matrix to the at least one identified stream. The precoding matrix changes over time. The precoding matrix may change based on closed loop feedback, a precoding cycling pattern, and/or a code division multiplexing group. The UE may transmit the at least one identified stream from multiple antennas according to the applied precoding matrix.
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Patent Agency Ranking
公开(公告)号：US10568130B2
公开(公告)日：2020-02-18
申请号：US15707659
申请日：2017-09-18
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Hung Ly , Haitong Sun , Hao Xu
Abstract: A user equipment (UE) may perform a random access procedure to synchronize with a network for uplink and/or downlink communication. The UE may transmit a first type of random access transmission that includes transmitting a preamble or a second type of random access transmission that includes transmitting a preamble and a random access message. The second type may result in reduced delay but may have lesser SNR tolerance than the first type. In some aspects, the UE may determine whether to transmit the first type or the second type, and may transmit the first type or the second type in a random access channel portion of a slot. The random access channel portion of the slot may be occupied by portions of either the first type of random access transmission or the second type of random access transmission, thereby enabling flexible utilization of multiple types of random access procedure.
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公开(公告)号：US10567205B2
公开(公告)日：2020-02-18
申请号：US15674428
申请日：2017-08-10
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Sony Akkarakaran , Wei Zeng , Peter Gaal , Yi Huang , Renqiu Wang , Hao Xu , Tao Luo , Tingfang Ji
Abstract: Methods, systems, and devices for wireless communications are described that support frequency and time domain multiplexing for low peak-to-average waveforms with multiple streams. A user equipment (UE) may identify sets of symbols associated with different streams (e.g., multiple single-carrier discrete Fourier transform (DFT)-spread waveforms), where each stream may be associated with a low peak-to-average power ratio (PAPR). In some cases, different waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM). The UE may further reduce the PAPR of the multiplexed waveforms by performing time division multiplexing (TDM) across the single-carrier streams, and sets of symbols that are not used by one waveform may be used by another waveform. Frequency domain phase ramps may be applied to align the multiplexed waveforms. Signals included in an uplink transmission according to these techniques may maintain properties similar to single-carrier waveforms, including a low PAPR.
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公开(公告)号：US10555304B2
公开(公告)日：2020-02-04
申请号：US15448931
申请日：2017-03-03
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Hao Xu , Peter Gaal , Alberto Rico Alvarino , Xiao Feng Wang , Seyed Ali Akbar Fakoorian , Jing Lei
Abstract: NB wireless communication involves numerous challenges. A limited frequency dimension may need to be shared by multiple users. At times, large data transmissions, including multiple TBs of data may be transmitted using NB communication, and it may be important that each TB be successfully received by the users. The apparatus may transmit data comprising a plurality of TBs in a narrow band communications system, including repeating a transmission of the plurality of TBs, using any of a number of repetition patterns. The apparatus may use error correction encoding across multiple TBs. The transmission may be a single cell transmission or a multi-cell transmission.
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39.发明授权公开(公告)号：US10530625B2
公开(公告)日：2020-01-07
申请号：US15873668
申请日：2018-01-17
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Wei Zeng , Peter Gaal , Hao Xu , Yi Huang , Renqiu Wang , Sony Akkarakaran , Tao Luo , Tingfang Ji
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be configured with a transmission stream processor used to maintain a lower peak-to-average power ratio (PAPR) for uplink transmissions. In some cases, a UE may map modulated symbols of different signals (or waveforms) to interleaved subsets of frequency resources, and this form of frequency division multiplexing (FDM) may increase the PAPR of an uplink transmission. To reduce the PAPR of uplink transmissions, a transmission stream processor at the UE may support techniques for phase ramping modulated symbols in the time domain prior to mapping the symbols to the frequency resources. These techniques may help to ensure that the signals to be included in an uplink transmission are aligned in such a way that the PAPR of the uplink transmission is reduced.
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40.发明申请公开(公告)号：US20190379437A1
公开(公告)日：2019-12-12
申请号：US16476408
申请日：2018-02-05
Applicant: Se Yong PARK , Wei ZENG , Alexandros MANOLAKOS , Sony AKKARAKARAN , Yi HUANG , Renqiu WANG , Hao XU , Yu ZHANG , Joseph Binamira SORIAGA , Tingfang JI , Peter GAAL , Qualcomm Incorporated
Inventor： Se Yong Park , Wei Zeng , Alexandros Manolakos , Sony Akkarakaran , Yi Huang , Renqiu Wang , Hao Xu , Yu Zhang , Joseph Binamira Soriago , Tingfang Ji , Peter Gaal
IPC: H04B7/0456 , H04L27/26 , H04L5/00
Abstract: Methods, systems, and devices for wireless communication are described that support a low peak-to-average power ratio (PAPR) precoded reference signal design for multiple-input, multiple-output (MIMO) transmissions. A user equipment (UE) may identify multiple sets of symbols associated with different reference signal waveforms, where each reference signal waveform may be associated with a low PAPR. In some cases, different single-carrier reference signal waveforms may be mapped to subsets of frequency resources through frequency division multiplexing (FDM) for a transmission on a single antenna. However, the addition of single-carrier waveforms through FDM for a transmission via an antenna may result in an uplink transmission having a high PAPR (e.g., as compared to single-carrier waveforms). The UE may reduce the PAPR of the uplink transmission by multiplexing the reference signal waveforms in the time domain (e.g., using time division multiplexing (TDM)).
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