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公开(公告)号：US20220060304A1
公开(公告)日：2022-02-24
申请号：US17454017
申请日：2021-11-08
Applicant: QUALCOMM INCORPORATED
Inventor： Jay Kumar Sundararajan , Renqiu Wang , Hao Xu , Naga Bhushan , Haitong Sun , Wanshi Chen
Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may transmit feedback, such as hybrid automatic repeat request (HARD) feedback for groups of code blocks rather than for an entire transport block or individual code blocks. The wireless device may transmit an acknowledgement (ACK) or negative-acknowledgement (NACK) to provide feedback for each code block group of a set of code block groups. An ACK may indicate that code blocks in a code block group were successfully decoded, and a NACK may indicate that at least one code block in a code block group was not successfully decoded. Wireless devices may support several techniques for grouping code blocks for feedback reporting to allow for efficient retransmissions and limited overhead. Different grouping schemes may be employed depending on system constraints, device capability, link conditions, or the like.
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公开(公告)号：US11239972B2
公开(公告)日：2022-02-01
申请号：US15802306
申请日：2017-11-02
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Renqiu Wang , Peter Gaal , Wanshi Chen , Hao Xu
Abstract: Aspects of the present disclosure provide techniques and apparatus for performing narrowband physical random access channel (PRACH) procedures in large cells. For example, aspects of the present disclosure provide techniques for narrowband PRACH procedures (e.g., narrowband internet of things (NB-IoT)) to accommodate larger RTTs (e.g., up to 100 km). In some cases, supporting larger RTTs may involve a base station altering its PRACH processing by performing a two-step process of, first, obtaining a frequency domain phase offset based on an uplink signal from a UE, which provides a fractional delay and, second, performing a time domain correlation for different timing hypotheses to determine a timing offset based on the uplink signal. Supporting larger RTTs may also involve enabling a new NPRACH format that may coexist with legacy 3.75 kHz resources.
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公开(公告)号：US11212151B2
公开(公告)日：2021-12-28
申请号：US16107783
申请日：2018-08-21
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Yi Huang , Renqiu Wang , Sony Akkarakaran , Peter Gaal , Tao Luo
Abstract: Methods, systems, and devices for wireless communications are described. Pre-discrete Fourier transform (DFT) time-domain spreading codes may be applied for UE multiplexing for uplink control information (e.g., over shared resources of an uplink slot). For example, a moderate number of UEs may be multiplexed within the same slot by having each UE spread modulation symbols before DFT-spreading by different spreading code. For orthogonality across UEs, the pre-DFT spreading codes may be selected as orthogonal cover codes (OCCs). The spreading sequences can be generated from a set of any orthogonal sequences or generated from unitary matrices. In some cases, orthogonality in the time domain may be kept as well as a frequency division multiplexed (FDM) structure in the frequency domain. For such property, a Fourier basis OCC design may be used. In some other examples, a Hadamard matrix based OCC design may be used.
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24.发明授权公开(公告)号：US11122549B2
公开(公告)日：2021-09-14
申请号：US16192482
申请日：2018-11-15
Applicant: QUALCOMM Incorporated
Inventor： Yi Huang , Peter Gaal , Wanshi Chen , Renqiu Wang
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may map channel state information (CSI) to first resource elements that are distributed in frequency, wherein the first resource elements are in a set of resources allocated on an uplink shared channel; map hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency, wherein the second resource elements are in the set of resources; wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements; and transmit the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings. Numerous other aspects are provided.
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公开(公告)号：US11115977B2
公开(公告)日：2021-09-07
申请号：US16369308
申请日：2019-03-29
Applicant: QUALCOMM Incorporated
Inventor： Seyed Ali Akbar Fakoorian , Alberto Rico Alvarino , Peter Gaal , Wanshi Chen , Yongbin Wei , Juan Montojo , Renqiu Wang , Hao Xu , Xiaofeng Wang
Abstract: Aspects of the present disclosure provide techniques for uplink (UL) data channel design. An example method is provided for operations which may be performed by a first apparatus. The example method generally comprises determining a number of pilot symbols to transmit for one or more slots of a first subframe based, at least in part, on a coverage enhancement (CE) level, and transmitting at least one uplink data channel having the determined number of pilot symbols in the one or more slots of the first subframe.
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Patent Agency Ranking
公开(公告)号：US11075709B2
公开(公告)日：2021-07-27
申请号：US16274307
申请日：2019-02-13
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Jing Lei , Renqiu Wang , Joseph Binamira Soriaga , Naga Bhushan , Tingfang Ji
Abstract: Aspects of the present disclosure provide techniques for variable spreading factor codes for non-orthogonal multiple access (NOMA). In an exemplary method, a base station assigns, from a first codebook of N short code sequences of length K, a subset of the short code sequences to a number of user equipments (UEs); receives a signal including uplink data or control signals from two or more of the UEs, wherein a first uplink data or control signal is sent using a first subsequence of one of the assigned short code sequences, and a second uplink data or control signal is sent using a second subsequence of one of the assigned short code sequences or using one of the assigned short code sequences; and decodes each uplink data or control signal in the signal based on the assigned short code sequences and subsequences of the assigned the short code sequences.
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公开(公告)号：US11057175B2
公开(公告)日：2021-07-06
申请号：US16259941
申请日：2019-01-28
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Peter Gaal , Hao Xu , Wanshi Chen , Yongbin Wei , Xiao Feng Wang , Renqiu Wang , Seyed Ali Akbar Fakoorian , Madhavan Srinivasan Vajapeyam , Alberto Rico Alvarino , Juan Montojo
Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation, which can be used for stand-alone/in-band/guard-band deployment. An example method is provided for operations which may be performed by a base station (BS). The example method generally includes generating a primary synchronization signal (PSS) utilizing a first code sequence and a cover code applied to the first code sequence over a first number of symbols within one or more subframes, generating a secondary synchronization signal (SSS) based on a second code sequence over a second number of symbols within one or more subframes, and transmitting the PSS and the SSS in the first and second subframes to a first type of a user equipment (UE) that communicates on one or more narrowband regions of wider system bandwidth.
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公开(公告)号：US11005622B2
公开(公告)日：2021-05-11
申请号：US16227803
申请日：2018-12-20
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Wei Yang , Yi Huang , Renqiu Wang , Sony Akkarakaran , Xiao Feng Wang , Peter Gaal
Abstract: Methods, systems, and devices for wireless communications are described. A transmitting device may identify a set of allocated resource blocks and a number of the allocated resource blocks. The transmitting device may determine a bit sequence length corresponding to the number of allocated resource blocks. The transmitting device may generate a reference signal based on a bit sequence having the bit sequence length and transmit the reference signal within the allocated resource blocks. The transmitting device may modulate the bit sequence using a π/2 binary phase shift keying modulation scheme. The transmitting device may modulate a data bit sequence using the same modulation scheme to generate a modulated data bit sequence, where a peak to average power ratio (PAPR) of tones transporting the modulated data bit sequence satisfies a PAPR threshold and a PAPR of tones transporting the reference signal also satisfies the PAPR threshold.
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公开(公告)号：US10959247B2
公开(公告)日：2021-03-23
申请号：US16002912
申请日：2018-06-07
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Wanshi Chen , Peter Gaal , Joseph Binamira Soriaga , Yi Huang
Abstract: Aspects directed towards new radio (NR) transmissions of uplink control information (UCI) are disclosed. In a particular example, a priority is assigned to each of a plurality of UCI components such that the priority is assigned according to at least one of a type or payload size respectively associated with each of the plurality of UCI components. The plurality of UCI components are then transmitted based on the priority respectively assigned to each of the plurality of UCI components.
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公开(公告)号：US10939322B2
公开(公告)日：2021-03-02
申请号：US16538685
申请日：2019-08-12
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Wanshi Chen , Hao Xu , Wei Zeng , Renqiu Wang , Peter Gaal , Tingfang Ji , John Edward Smee
Abstract: Signaling strategies for an advanced receiver with interference cancellation (IC) and suppression is discussed. Upon enablement of an advanced interference cancellation procedure according to the disclosure, transmitters within the enabled area transmit according to transmission restriction configurations that provide transmission limits based on either frequency, time, or scheduling. The restrictions on the transmitters reduces the complexity of processing by neighboring advanced receivers for cancellation of interference from the restricted transmitters. At the advanced receiver, transmission information, such as scheduling, reference signal (RS), resource block (RB) allocation, and the like, may either be determined through blind detection or received directly through signaling. The advanced receiver may use this transmission information associated with each interfering signal to detect, decode, and subtract the interfering signals from the received transmissions.
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