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161.发明申请公开(公告)号：US20210297972A1
公开(公告)日：2021-09-23
申请号：US17337346
申请日：2021-06-02
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Arumugam Chendamarai Kannan , Chih-Hao Liu , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization may be generated by applying a first phase shift to the first synchronization sequence.
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公开(公告)号：US20210250932A1
公开(公告)日：2021-08-12
申请号：US17248248
申请日：2021-01-15
Applicant: QUALCOMM INCORPORATED
Inventor： Chih-Hao Liu , Yisheng Xue , Xiaoxia Zhang , Jing Sun , Yongbin Wei
Abstract: Wireless communications systems and methods related to uplink communications with transmission on-off patterns and frequency-hopping in a shared radio frequency band are provided. A first wireless communication device communicates, with a second wireless communication device, a configuration indicating a plurality of uplink (UL) transmission on-off patterns that are offset from each other in time. The first wireless communication device communicates, with the second wireless communication device in an unlicensed band, a first UL communication signal based on a first UL transmission on-off pattern of the plurality of UL transmission on-off patterns.
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公开(公告)号：US20210219283A1
公开(公告)日：2021-07-15
申请号：US17247121
申请日：2020-11-30
Applicant: QUALCOMM INCORPORATED
Inventor： Yisheng Xue , Chih-Hao Liu , Xiaoxia Zhang , Jing Sun , Yongbin Wei
Abstract: Wireless communications systems and methods related to autonomous sidelink communication are provided. A first user equipment (UE) communicates, in a first subband of a plurality of subbands within a shared radio frequency band during a first time period, first sidelink control information (SCI) associated with a second subband of the plurality of subbands. The first UE communicates, with the second UE, first sidelink data in the second subband during the first time period based on the first SCI. The first UE communicates, with the second UE in the first subband during a second time period, second SCI associated with a third subband of the plurality of subbands, the third subband being different from the second subband based on a frequency hopping pattern. The first UE communicates, with the second UE, second sidelink data in the third subband during the second time period based on the second SCI.
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164.发明授权公开(公告)号：US11051263B2
公开(公告)日：2021-06-29
申请号：US15989698
申请日：2018-05-25
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Arumugam Chendamarai Kannan , Chih-Hao Liu , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a first synchronization sequence and generate a second synchronization sequence based at least in part on the first synchronization sequence. The base station may map the first synchronization sequence to a first resource block of a synchronization channel associated with a first frequency sub-band of a shared radio frequency spectrum band and the second synchronization sequence to a second resource block associated with a second frequency sub-band of the synchronization channel. The base station may then transmit the first synchronization sequence and the second synchronization sequence concurrently over the synchronization channel using the first resource block and the second resource block according to the mapping. In some cases, the second synchronization may be generated by applying a first phase shift to the first synchronization sequence.
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公开(公告)号：US11025296B2
公开(公告)日：2021-06-01
申请号：US16255645
申请日：2019-01-23
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Srinivas Yerramalli , Tamer Kadous
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a discovery reference signal from a base station on an anchor channel. The UE may perform a first random or pseudorandom frequency hopping procedure to identify a plurality of downlink carriers for a first time period. The UE may perform a second random or pseudorandom frequency hopping procedure within the plurality of downlink carriers to select one of the plurality of downlink carriers as the uplink channel for a second time period. The UE may then transmit an uplink communication during the second time period on the selected uplink channel. In some examples, the uplink communication may be transmitted based at least in part on time division multiplexing (TDM) information.
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Patent Agency Ranking
公开(公告)号：US20210127421A1
公开(公告)日：2021-04-29
申请号：US17083222
申请日：2020-10-28
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Yisheng Xue , Xiaoxia Zhang , Jing Sun
Abstract: Channel access enhancement for new radio-unlicensed (NR-U) operations are disclosed. In attempting access to a shared communication channel, both base stations and user equipments (UEs) may operate similarly to load-based equipment (LBE) devices by performing extended clear channel access (eCCA) operations independently, such that each of the base stations and UEs may independently acquire the channel occupancy time (COT) of the shared communication spectrum.
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公开(公告)号：US20210075579A1
公开(公告)日：2021-03-11
申请号：US16948094
申请日：2020-09-02
Applicant: QUALCOMM INCORPORATED
Inventor： Chih-Hao Liu , Jing Sun , Yisheng Xue , Xiaoxia Zhang
IPC: H04L5/00 , H04B1/7143 , H04W24/08 , H04W74/08 , H04W76/11
Abstract: Wireless communications systems and methods related to bandwidth part (BWP) hopping for interference mitigation are provided. A user equipment (UE) receives, from a base station (BS), a bandwidth part (BWP) configuration indicating a first BWP hopping pattern in a plurality of frequency subbands within a shared radio frequency band. The UE monitors for a first communication signal in a first frequency subband of the plurality of frequency subbands. The UE performs BWP hopping from the first frequency subband to a second frequency subband of the plurality of frequency subbands based on the first BWP hopping pattern. The UE monitors, after performing the BWP hopping, for a second communication signal in the second frequency subband.
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公开(公告)号：US10667143B2
公开(公告)日：2020-05-26
申请号：US15186407
申请日：2016-06-17
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , June Namgoong , Srikant Jayaraman
Abstract: Aspects of the present disclosure generally relate to techniques and apparatus that may help improve greatly reduce the implementation complexity of the ground station, and ground base-station user capacity by utilizing a subband beamformer for processing uplink signals received from aircraft at ground base stations, in an air-to-ground (ATG) system. The techniques presented herein may allow for dynamic subband allocation to different airborne devices with multi-user beamforming and subband combining.
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公开(公告)号：US10652914B2
公开(公告)日：2020-05-12
申请号：US16134534
申请日：2018-09-18
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Srinivas Yerramalli , Tamer Kadous
Abstract: In an embodiment, an AP executes a CCA protocol to determine whether to begin transmission within a DMTC window of a radio frame having first and second blocks of subframes. The AP transmits a multi-subframe DRS within the DRS subframes that is scrambled in accordance with a CSI-RS scrambling rule that determines how the second DRS subframe is to be scrambled based on whether the first DRS subframe is included among the first block of subframes or the second block of subframes. At least one UE monitors the DMTC window, and descrambles the CSI-RSs in the multi-DRS subframe based on a CSI-RS descrambling rule that determines how the second DRS subframe is to be descrambled based on whether the first DRS subframe is included among the first block of subframes or the second block of subframes.
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公开(公告)号：US10609660B2
公开(公告)日：2020-03-31
申请号：US15949978
申请日：2018-04-10
Applicant: QUALCOMM Incorporated
Inventor： Chih-Hao Liu , Srinivas Yerramalli , Tamer Kadous
IPC: H04W56/00
Abstract: Methods, systems, and devices for wireless communication are described for synchronization for wideband coverage enhancement. A user equipment (UE) may receive a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) in a subframe of a frame. In one example, the PSS may be received in each of a first plurality of consecutive symbols of the subframe. In another example, the SSS may be received in each of a second plurality of consecutive symbols of the subframe, wherein the second plurality of consecutive symbols is after the first plurality of consecutive symbols within the subframe. The UE may synchronize with a base station based at least in part on the PSS and the SSS received in the subframe. Numerous other aspects are provided.
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