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公开(公告)号：US20200229240A1
公开(公告)日：2020-07-16
申请号：US16738957
申请日：2020-01-09
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxia Zhang , Tao Luo , Sony Akkarakaran , Jing Sun
Abstract: Methods, systems, and devices for a two-step random access channel (RACH) procedure are described that may enable a user equipment (UE) and a base station to perform a two-step RACH procedure and begin communications using an accurate timing advance (TA). The UE may send a first RACH message of the two-step RACH procedure to the base station. The base station may determine an accurate TA based on the contents of the first RACH message. The base station may prepare a downlink control message and a corresponding second RACH message to send to the UE. The base station may include scheduling information for the second message and an indication of the TA in the downlink control message. The base station may identify one or more data fields in bits within the downlink control message reserved for information other than the TA and replace the bits with the TA indication.
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公开(公告)号：US20200228174A1
公开(公告)日：2020-07-16
申请号：US16736778
申请日：2020-01-07
Applicant: QUALCOMM Incorporated
Inventor： Wooseok Nam , Zhifei Fan , Tao Luo , Xiaoxia Zhang , Jing Sun , Arumugam Chendamarai Kannan
IPC: H04B7/0456 , H04B7/0452 , H04L1/18 , H04W72/04 , H04L5/00
Abstract: Methods, systems, and devices for wireless communications are described. A size of a hybrid automatic repeat request (HARQ)-acknowledgment (ACK) codebook may be determined and indicated when the HARQ-ACK codebook is transmitted. For example, a user equipment (UE) may transmit a number of information bits within a HARQ-ACK codebook, and may further indicate a size of the HARQ-ACK codebook based on the number of information bits. The UE may transmit the indication of the size of the HARQ-ACK codebook on the same or different time/frequency resources as the HARQ-ACK codebook, using a particular field, using a different uplink channels, or the like. Additionally or alternatively, the UE may indicate the size of the HARQ-ACK codebook using a particular pattern or sequence of reference signals associated with the channel used to carry the HARQ-ACK codebook.
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公开(公告)号：US10708796B2
公开(公告)日：2020-07-07
申请号：US15461368
申请日：2017-03-16
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Taesang Yoo , Tao Luo
Abstract: A base station may determine a Doppler metric associated with a wireless channel and a user equipment (UE). The Doppler metric may be determined from received information related to Doppler effects measured by the UE or from directly measured Doppler effects associated with uplink data received from the UE. Based on the determined Doppler metric, the base station may select one or both of a reference signal (RS) density and a channel estimation technique for the wireless channel and associated UE. The base station may transmit an indication of the RS density to the UE. Downlink data bursts and uplink data bursts may include RSs and data according to the indicated RS density. Further, the base station may transmit to the UE, an indication to communicate using the selected wireless channel estimation technique.
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844.发明授权公开(公告)号：US10708728B2
公开(公告)日：2020-07-07
申请号：US15601845
申请日：2017-05-22
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Wanshi Chen , Peter Gaal , Juan Montojo
IPC: H04W4/18 , H04W52/26 , H04W52/14 , H04W72/06 , H04W88/04 , H04W72/12 , H04L27/34 , H03K7/10 , H04B7/0413 , H04L5/00 , H04L1/00
Abstract: Multi-user superposition transmissions (MUSTs) on non-aligned resources are described. A base station may schedule a transmission to an enhancement layer user equipment (UE) and a base layer UE. The transmission may include a base layer that spans a base layer resource set and an enhancement layer that spans an enhancement layer resource set, where the resource sets may be aligned or un-aligned. The base station may use a combined constellation to map symbols to the base layer resource set for communication with the enhancement layer and base layer UEs over overlapping portions of the resource sets, and an extended constellation to map symbols to an extended set of resources for which the enhancement layer resource set is exclusive of the base layer resource set. The extended constellation may be based on an extended modulation order determined based on a base modulation order and an enhancement modulation order.
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公开(公告)号：US10700913B2
公开(公告)日：2020-06-30
申请号：US15978985
申请日：2018-05-14
Applicant: QUALCOMM Incorporated
Inventor： Yang Yang , Alexandros Manolakos , Jing Sun
Abstract: Certain aspects of the present disclosure relate to methods and apparatus for mapping modulated symbols to physical resources. The mapping described herein may result in both time and frequency diversity. For example, a method for wireless communications may include alternately mapping quadrature amplitude modulated (QAM) symbols of a code block to frequency resources within a scheduling unit of time, wherein the mapping comprises a frequency-first mapping where symbols of the code block are alternately mapped to a first subset of the frequency resources in a first set of orthogonal frequency division multiplexed (OFDM) symbols, then to a second subset of the frequency resources in a second set of OFDM symbols, and transmitting the code block based on the mapping.
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Patent Agency Ranking
公开(公告)号：US10687352B2
公开(公告)日：2020-06-16
申请号：US16007919
申请日：2018-06-13
Applicant: QUALCOMM Incorporated
Inventor： Makesh Pravin John Wilson , Tao Luo , Jing Sun , Heechoon Lee
Abstract: Methods, systems, and devices are described for wireless communications. A wireless communication device may switch between a distributed and a clustered transmission scheme for control information transmissions. In some cases, the base station may indicate to a UE that a clustered control information transmission scheme will be used and may also indicate a monitoring pattern informing the UE how to identify its own control information in a control information set. For instance, a base station may indicate to the UE that a preferred beam of the UE is correlated with a symbol position of the UE's control information in the control information set. In some cases, the base station may indicate to a UE that a distributed control information transmission scheme will be used.
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公开(公告)号：US10686576B2
公开(公告)日：2020-06-16
申请号：US16120909
申请日：2018-09-04
Applicant: QUALCOMM Incorporated
Inventor： Peter Pui Lok Ang , Wanshi Chen , Heechoon Lee , Jing Sun , Joseph Binamira Soriaga , Yang Yang
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a first hybrid automatic repeat request acknowledgement (HARQ-ACK) payload for a first component carrier (CC) set based at least in part on a first downlink assignment index (DAI). The UE may determine a second HARQ-ACK payload for a second CC set based at least in part on a second DAI. The UE may transmit the first HARQ-ACK payload for the first CC set and the second HARQ-ACK payload for the second CC set. Numerous other aspects are provided.
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公开(公告)号：US20200178272A1
公开(公告)日：2020-06-04
申请号：US16675114
申请日：2019-11-05
Applicant: QUALCOMM Incorporated
Inventor： Mostafa Khoshnevisan , Xiaoxia Zhang , Juan Montojo , Jing Sun , Tao Luo
IPC: H04W72/12
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a downlink control message (e.g., via a physical downlink control channel (PDCCH)) from a first transmission reception point (TRP) including a transmission configuration indicator (TCI) state identifying multiple quasi co-location (QCL) relationships for the UE. The UE may determine a first set of control parameters for communication with the first TRP and a second set of control parameters for communication with a second TRP based on the downlink control message. In some cases, the second set of control parameters may be different than first set of control parameters. The UE may communicate with the first TRP and the second TRP (e.g., the UE may receive a physical downlink shared channel (PDSCH) from each TRP) based on the first set of control parameters and the second set of parameters.
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公开(公告)号：US10674536B2
公开(公告)日：2020-06-02
申请号：US16039222
申请日：2018-07-18
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tao Luo , Wanshi Chen
Abstract: In a radio air interface, a mixed-numerology carrier is one that multiplexes orthogonal frequency division multiplexed (OFDM) waveforms that have different numerologies onto the same carrier. This disclosure provides for a sync signal (SS) enabling channel access for such a mixed-numerology carrier. In one example, a single SS, having a given numerology, supports channel access for a plurality of numerologies on the mixed-numerology carrier. In another example, a plurality of numerologies on the mixed-numerology carrier each has its own respective SS, and a single, common numerology is used for all SS's. In still another example, a plurality of numerologies on the mixed-numerology carrier each has its own respective SS, where each SS has the same numerology as the numerology for which the SS provides channel access.
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850.发明授权公开(公告)号：US10673675B2
公开(公告)日：2020-06-02
申请号：US16030335
申请日：2018-07-09
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Jing Sun , Tamer Kadous
IPC: H04L27/36 , H04L27/38 , H04B7/0408 , H04L27/34 , H04B7/0452 , H04B7/06 , H04L27/26 , H04B7/10 , H04W16/28 , H04W72/04 , H04J14/06 , H04L5/00 , H04J3/02
Abstract: Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.
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