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公开(公告)号:US11470663B2
公开(公告)日:2022-10-11
申请号:US16427163
申请日:2019-05-30
Applicant: QUALCOMM Incorporated
Inventor: Naga Bhushan , Durga Prasad Malladi , Yongbin Wei , Peter Gaal , Tao Luo , Tingfang Ji , Gavin Bernard Horn , Wanshi Chen , Aleksandar Damnjanovic
IPC: H04W74/08 , H04L5/00 , H04W76/15 , H04L1/00 , H04L27/26 , H04L5/14 , H04L27/00 , H04W48/10 , H04W72/08 , H04W74/00 , H04L1/06 , H04W28/02 , H04W24/02 , H04W28/08 , H04W28/16 , H04W72/04 , H04W56/00 , H04W74/04 , H04W16/14 , H04W88/06 , H04W88/08 , H04W84/12 , H04J11/00 , H04W88/02
Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. One method includes performing a clear channel assessment (CCA) for an unlicensed spectrum in a current gating interval to determine whether the unlicensed spectrum is available for a transmission in a next transmission interval, and gating OFF the transmission in the unlicensed spectrum for the next transmission interval when the determination is that the unlicensed spectrum is unavailable.
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372.
公开(公告)号:US11464001B2
公开(公告)日:2022-10-04
申请号:US16942475
申请日:2020-07-29
Applicant: QUALCOMM Incorporated
Inventor: Seyed Ali Akbar Fakoorian , Xiaoxia Zhang , Aleksandar Damnjanovic , Jing Sun
Abstract: This disclosure provides systems, methods, and apparatuses for jointly activating or releasing a plurality of semi-persistent scheduling (SPS) configurations using a single downlink control information (DCI) message. In some implementations, a user equipment (UE) receiving the DCI message can determine, for each SPS configuration, a number of time slots between an end of the received DCI message and a beginning of one or more downlink (DL) data frames based on a first value contained in the DCI message. The UE can also determine, for each SPS configuration, a number of time slots between an end of the DL data frames and an instance in time at which the UE is to transmit a hybrid automatic repeat request acknowledgement (HARQ-ACK) based on a second value contained in the DCI message. In some instances, the single DCI message can also jointly activate or release a plurality of configured grant (CG) configurations.
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公开(公告)号:US11432229B2
公开(公告)日:2022-08-30
申请号:US16592517
申请日:2019-10-03
Applicant: QUALCOMM Incorporated
Inventor: Ozcan Ozturk , Andrei Dragos Radulescu , Aleksandar Damnjanovic , Xiaoxia Zhang , Jing Sun
Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a globally unique set of characteristics associated with a cell associated with the base station. The base station may generate a signature value unique to the cell based at least in part on a hash of the globally unique set of characteristics associated with the cell. The base station may transmit a control signal over a channel of a shared radio frequency spectrum band, the control signal comprising a physical cell identifier of the cell and the signature value.
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374.
公开(公告)号:US20220201560A1
公开(公告)日:2022-06-23
申请号:US17131379
申请日:2020-12-22
Applicant: QUALCOMM Incorporated
Inventor: Jelena Damnjanovic , Tao Luo , Junyi Li , Aleksandar Damnjanovic
Abstract: This disclosure provides systems, methods and apparatuses for a transmission, from a user equipment (UE) to a first distributed unit (DU), of one or more measurement reports including channel measurements of a set of cells associated with a second DU of a same central unit (CU) as the first DU. The UE may transmit the one or more measurement reports according to various reporting format options, including via separate reports for activated and deactivated cells of the second DU, a joint report for activated and deactivated cells of the second DU, or a joint report across a set of DUs including the first DU. The measurement reports may include one or more metrics associated with each cell of a configured cell set and the UE and the DUs of the same CU may activate or deactivate one or more cells for communication with the UE based on the measurement reports.
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公开(公告)号:US11368979B2
公开(公告)日:2022-06-21
申请号:US16953097
申请日:2020-11-19
Applicant: QUALCOMM Incorporated
Inventor: Yisheng Xue , Aleksandar Damnjanovic , Xiaoxia Zhang , Yongbin Wei
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a node may identify a listen-before-talk (LBT) success time at which an LBT procedure, performed by the node, succeeds; determine a lag between the LBT success time and a most recent synchronization reference boundary that occurred prior to the LBT success time; and determine a maximum channel occupancy time for transmissions on an unlicensed radio frequency spectrum band based at least in part on comparing the lag and a threshold. Numerous other aspects are provided.
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公开(公告)号:US11337246B2
公开(公告)日:2022-05-17
申请号:US16579453
申请日:2019-09-23
Applicant: QUALCOMM Incorporated
Inventor: Tao Luo , Shimman Arvind Patel , Wanshi Chen , Naga Bhushan , Yongbin Wei , Hao Xu , Aleksandar Damnjanovic , Tingfang Ji , Durga Prasad Malladi , Srinivas Yerramalli , Peter Gaal
Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.
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公开(公告)号:US20220150885A1
公开(公告)日:2022-05-12
申请号:US17529048
申请日:2021-11-17
Applicant: QUALCOMM Incorporated
Inventor: Wanshi Chen , Ozcan Ozturk , Aleksandar Damnjanovic , Juan Montojo
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify uplink (UL) control information (UCI) to transmit during a subframe. The UE may then select a UL channel on which to transmit the UCI based on whether a shared data and control UL channel employs contention-based scheduling. For example, multiple UEs could contend for access to the same semi-persistently scheduled (SPS) physical UL shared channel (PUSCH). Each UE may utilize a different demodulation reference (DMRS) signal cyclic shift to identify their transmissions. In some cases, some UCI, such as channel state information (CSI), may be transmitted on a contention-based PUSCH, while other UCI, such as acknowledgement information, may be transmitted on a physical uplink control channel (PUCCH). In some cases, the channel selection may be based on a configuration received from a base station.
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公开(公告)号:US11330612B2
公开(公告)日:2022-05-10
申请号:US16738867
申请日:2020-01-09
Applicant: QUALCOMM Incorporated
Inventor: Yisheng Xue , Aleksandar Damnjanovic , Jing Sun , Xiaoxia Zhang , Yongbin Wei
Abstract: Autonomous uplink (AUL) for wideband new radio (NR) unlicensed (NR-U) operations is disclosed. For user equipments (UEs) that have been configured for AUL transmissions and have received an activation signal to activate the AUL capabilities, further indications may be used to enable AUL transmissions on AUL transmission opportunities (TxOPs) that overlap the timing of a current TxOP reserved by a serving base station, but that are allocated outside of the resources reserved for the current TxOP. A UE that identifies a desired, next AUL TxOP that overlaps the current base station-initiated TxOP duration, but is allocated for resources outside of the current TxOP resources determines whether it has obtained an enablement indication either directly from the serving base station or implicitly, based on current conditions at the UE. When the UE determines that it has obtained an enabling indication, it may then perform AUL transmissions via the overlapping AUL TxOP.
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公开(公告)号:US11297510B2
公开(公告)日:2022-04-05
申请号:US14989505
申请日:2016-01-06
Applicant: QUALCOMM Incorporated
Inventor: Jelena Damnjanovic , Aleksandar Damnjanovic , Durga Prasad Malladi
Abstract: Methods, systems, and devices are described for wireless communication at a UE. A wireless devices may use a shared or unlicensed spectrum configuration based on a prioritization scheme for the shared frequency resources. The prioritization scheme may assign a priority to different operators and may enable devices associated with a prioritized operator to access the shared band over non-prioritized devices. For example, a non-prioritized device may win the channel and begin communicating over the shared or unlicensed spectrum. The non-prioritized device may then periodically cease transmission for a set interval (i.e., a preemption opportunity) and listen for an indication that a prioritized device wishes to use the channel. If a prioritized device begins transmitting (or, in some cases, if the prioritized device transmits a medium preemption indication) the non-prioritized device may relinquish control of the channel.
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公开(公告)号:US11291047B2
公开(公告)日:2022-03-29
申请号:US16723902
申请日:2019-12-20
Applicant: QUALCOMM Incorporated
Inventor: Yisheng Xue , Xiaoxia Zhang , Aleksandar Damnjanovic , Jing Sun , Yongbin Wei
Abstract: New radio (NR) unlicensed (NR-U) operations are discussed with channel occupancy time (COT) multiple downlink-uplink switching opportunities supported by an active channel indication. A network node that initiates a COT for transmissions may identify a within-channel occupancy time (COT) scheduled downlink-uplink switching configuration. After beginning transmissions on the COT, the node receives an active channel indication from one or more additional network nodes. In response to the active channel indication, the node may then perform communications with the node from which the active channel indication is received according to the within-COT scheduled downlink-uplink switching configuration for the current COT on a shared communication channel.
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