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公开(公告)号：US11051193B2
公开(公告)日：2021-06-29
申请号：US15215148
申请日：2016-07-20
Applicant: Qualcomm Incorporated
Inventor： Renqiu Wang , Madhavan Srinivasan Vajapeyam , Hao Xu , Wanshi Chen , Peter Gaal , Yongbin Wei
Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a base station (BS). An exemplary method, performed by a base station, generally includes identifying an operating state of a user equipment that communicates with the BS in at least one narrowband region, determining, based on the operating state, one or more operating parameters of a configurable measurement procedure whereby the user equipment (UE) tunes away from the narrowband region to measure signals transmitted from other BSs, and configuring the UE to perform the measurement procedure in accordance with the determined operating parameters.
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公开(公告)号：US11050511B2
公开(公告)日：2021-06-29
申请号：US17048837
申请日：2019-04-17
Applicant: QUALCOMM Incorporated
Inventor： Chenxi Hao , Yu Zhang , Chao Wei , Liangming Wu , Qiaoyu Li , Hao Xu
IPC: H04L1/00 , H04B7/0413
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive or determine information identifying a mapping of one or more codewords with regard to one or more layers, wherein the one or more layers include at least one of: a first set of layers, wherein a fraction of bits associated with each layer, of the first set of layers, is for data associated with the UE, or a second set of layers, wherein all bits associated with each layer, of the second set of layers, are for data associated with the UE; and perform rate matching or decoding based at least in part on the information identifying the mapping. Numerous other aspects are provided.
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公开(公告)号：US11044725B2
公开(公告)日：2021-06-22
申请号：US16551457
申请日：2019-08-26
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Srinivas Yerramalli , Wanshi Chen , Jing Sun , Hao Xu , Shimman Arvind Patel
IPC: H04W72/04 , H04L1/18 , H04L5/00 , H04L27/00 , H04L27/26 , H04W72/12 , H04W24/10 , H04W74/08 , H04L5/14 , H04W8/22 , H04W16/16 , H04W16/14
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARQ) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.
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公开(公告)号：US11044709B2
公开(公告)日：2021-06-22
申请号：US15454966
申请日：2017-03-09
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Sharad Deepak Sambhwani , Juan Montojo , Hao Xu , Durga Prasad Malladi , Xiao Feng Wang , Wanshi Chen
Abstract: Aspects of the present disclosure provide techniques and apparatus for power savings for control channel monitoring for enhanced machine type communications (eMTC). In one aspect, a method is provided which may be performed by a wireless device such as a low cost wireless device, which may be user equipment (UE) or an eMTC UE. The method generally includes determining whether a downlink channel is present in a subframe; and causing the UE to enter a low power mode for a duration based on a determination that the downlink channel is not present in the subframe.
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公开(公告)号：US11032850B2
公开(公告)日：2021-06-08
申请号：US15619063
申请日：2017-06-09
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Peter Gaal , Wanshi Chen , Hao Xu , Jing Sun
Abstract: Certain aspects of the disclosure relate to techniques and apparatus for improving random access for SRS switching in a wireless network. Prior to transmitting a SRS, a UE may interrupt communication on a first carrier to switch from the first carrier to a second carrier to transmit a PRACH. To reduce interruption to the first carrier, the UE may use the beginning symbol(s) of a UpPTS on the second carrier to transmit the PRACH. In addition, to reduce interruption to the first carrier, the UE may monitor for another PDCCH order before transmitting another PRACH. Further, aspects of the present disclosure provide techniques and apparatus for jointly triggering SRS transmissions and performing power control for SRS transmissions. A BS may trigger SRS transmissions from multiple UEs, trigger SRS transmissions from multiple carriers from the same UE at the same time and/or perform power control separately for each carrier.
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Patent Agency Ranking
公开(公告)号：US11032732B2
公开(公告)日：2021-06-08
申请号：US16750577
申请日：2020-01-23
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Hao Xu , Peter Gaal
Abstract: Aspects of the present disclosure provide techniques that may be applied in systems comprising machine type communication (MTC) user equipments (UEs). An exemplary method performed by a base station comprises using a first transport block size (TBS) table to communicate with a first type of user equipment (UE), using a second TBS table to communicate with a second type of UE, wherein the first type of UE supports a reduced peak data rate relative to the second type of UE, signaling information to the first type of UE for use in determining a TBS from the first TBS table, and communicating with the first type of UE, with one or more transmissions having a payload with a number of bits determined based on a TBS value from the first TBS table selected based, at least in part, on the signaled information.
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公开(公告)号：US11026183B2
公开(公告)日：2021-06-01
申请号：US17028649
申请日：2020-09-22
Applicant: QUALCOMM Incorporated
Inventor： Jay Kumar Sundararajan , Hao Xu , Wanshi Chen , Jing Jiang
Abstract: Aspects of the present disclosure provide techniques for a user equipment (UE) to set uplink power control for a long uplink burst and a short uplink burst. The UE receives uplink power control information including a first set of power control parameters for a long uplink burst and a second set of power control parameters for a short uplink burst with the sets of power control parameters being different from each other. The UE configures uplink power control for the long uplink burst based at least on the first set of power control parameters and the short uplink burst based at least on the second set of power control parameters. The UE sends at least one of a long uplink burst and a short uplink burst based on the corresponding uplink power control and sends at least one uplink power-headroom report for the long uplink burst and short uplink burst.
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公开(公告)号：US11018828B2
公开(公告)日：2021-05-25
申请号：US15713270
申请日：2017-09-22
Applicant: QUALCOMM Incorporated
Inventor： Seyong Park , Wanshi Chen , Wei Zeng , Alexandros Manolakos , Hao Xu , Renqiu Wang , Yi Huang , Peter Gaal , Naga Bhushan
Abstract: Certain aspects of the present disclosure relate to methods and apparatus for Uplink MIMO reference signals and data transmission schemes communications systems operating according to 5G technologies. For example, one or more techniques for enabling PRG selection and conveying that selection are provided. In some cases, precoder selection techniques may be provided. Further, in some cases, techniques may be provided to distinguish OFDM and DFT-s-OFDM by using different ports.
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309.发明授权公开(公告)号：US11012984B2
公开(公告)日：2021-05-18
申请号：US16218214
申请日：2018-12-12
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Aleksandar Damnjanovic , Durga Prasad Malladi , Hao Xu , Peter Gaal , Yongbin Wei , Tao Luo
Abstract: Techniques are described for wireless communication. A first method includes identifying a first interval for an uplink transmission in a shared radio frequency spectrum band; identifying a second interval for the uplink transmission; comparing the first interval with the second interval; and determining uplink resources to use for the uplink transmission based at least in part on the comparison of the first interval with the second interval. A second method includes transmitting one or more assignments of uplink resources to use for an uplink transmission in a shared radio frequency spectrum band; detecting a duration of the uplink transmission; and identifying uplink resources used for the uplink transmission based at least in part on the detecting.
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公开(公告)号：US11012949B2
公开(公告)日：2021-05-18
申请号：US16691406
申请日：2019-11-21
Applicant: QUALCOMM Incorporated
Inventor： Sony Akkarakaran , Yi Huang , Peter Gaal , Xiao Feng Wang , Tao Luo , Hao Xu
Abstract: Methods, systems, and devices for power control in New Radio (NR) systems are described. In one example, a user equipment (UE) may determine a transmit power for a control channel based on an effective code rate of control information to be transmitted in the control channel. In another example, the UE may be configured to use a different transmit power for repeated transmissions of control information in a control channel. In yet another example, the UE may be configured to determine a transmit power for a transmission in a time interval or scale a transmission in a time interval based on a priority of the transmission relative to other transmissions scheduled in the time interval. In yet another example, the UE may be configured to determine respective transmit powers for uplink transmissions multiplexed differently using different open-loop parameters.
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