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公开(公告)号：US11272483B2
公开(公告)日：2022-03-08
申请号：US16088681
申请日：2017-03-30
摘要： A wireless transmit/receive unit (WTRU) may determine physical uplink control channel (PUCCH) resources for a PUCCH based on a number of hybrid automatic repeat request (HARQ) bits and based on a parameter. The WTRU may determine a format of the PUCCH based on symbols for uplink control information (UCI) and based on the number of HARQ bits.
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公开(公告)号：US11223394B2
公开(公告)日：2022-01-11
申请号：US15525676
申请日：2015-11-12
IPC分类号： H04B7/04 , H04B7/0417 , H04L5/00 , H04B7/0456 , H04B7/06 , H04B7/0413
摘要： Systems, methods, and instrumentalities are disclosed for antenna virtualization, e.g., in at least a two-dimensional antenna array. NE physical antenna elements may be virtualized to Np logical antenna ports. A virtualization may be WTRU-specific, which may optimize MIMO performance. A simplified MIMO scheme may be used with A reduction in feedback, reference signal, and/or control signaling overhead. Antenna virtualization schemes may utilize channel characteristics. Antenna virtualization may be defined, for example, based on antenna port to antenna element mapping, based on a measurement reference signal, based on a codebook or a codebook subset or based on an antenna virtualization matrix. One or more antenna virtualization schemes may be configured in a cell. Antenna virtualization schemes may be configured in a WTRU-specific manner, perhaps for example based on a WTRU channel characteristic(s). A WTRU may report one or more useful (e.g., optimized) antenna virtualization schemes, e.g., based on one or more measurements.
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13.发明申请公开(公告)号：US20200328855A1
公开(公告)日：2020-10-15
申请号：US16863495
申请日：2020-04-30
摘要： Methods, systems and apparatus are provided for hybrid automatic repeat request (HARQ) processes. A wireless transmit/receive unit (WTRU) may receive, in a first subframe, downlink control information (DCI) including a grant for a physical downlink shared control channel (PDSCH) and an indication of physical uplink control channel (PUCCH) resources. Further, the WTRU may receive, in the first subframe, data on the PDSCH based on the grant. Also, the WTRU may generate first acknowledgement (ACK)/negative ACK (NACK) information based on the data received on the PDSCH. Accordingly, the WTRU may transmit, in the first subframe, the first ACK/NACK information in a PUCCH transmission. In an example, the first ACK/NACK information may be transmitted in a time slot in the first subframe different from a time slot in the first subframe in which the DCI is received. Also, transmitting the PUCCH transmission may have a duration of one or two symbols.
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公开(公告)号：US20190098622A1
公开(公告)日：2019-03-28
申请号：US16088681
申请日：2017-03-30
IPC分类号： H04W72/04
摘要： A wireless transmit receive unit (WTRU) may monitor downlink short transmission time intervals (sTTIs) for a sTTI physical downlink control channel (sPDCCH) region. The WTRU may determine the sPDCCH region from a set of candidate sPDCCH regions for an uplink grant. The sPDCCH may be determined based on a WTRU-specific parameter.
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公开(公告)号：US09854589B2
公开(公告)日：2017-12-26
申请号：US14199642
申请日：2014-03-06
CPC分类号： H04W72/082 , H04B7/024 , H04B7/0452 , H04B7/0634 , H04J11/0023 , H04L5/0073 , Y02D70/1224 , Y02D70/1226 , Y02D70/1242 , Y02D70/1244 , Y02D70/1246 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/23 , Y02D70/442 , Y02D70/444
摘要： Interference mitigation (e.g., interference suppression and/or interference cancellation) in a wireless communications system may include interference alignment techniques. Interference alignment may be performed to concurrently mitigate the effects of multiple types of interference (e.g., inter-cell interference and intra-cell interference). Interference management using interference alignment may enhance spectral efficiency in an interference-limited communications system, such as a wireless communications system (e.g., a cellular system). Interference alignment techniques may be applied to a homogeneous wireless communications system (e.g., including one or macro base stations). Interference alignment techniques may be applied to a heterogeneous wireless communications system (e.g., including one or macro base stations and one or more overlaid low-power nodes, such as small cells, remote radio heads (RRHs), or the like).
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公开(公告)号：US20170332413A1
公开(公告)日：2017-11-16
申请号：US15667998
申请日：2017-08-03
发明人： Ghyslain Pelletier , Stephen E. Terry , Paul Marinier , Guodong Zhang , Peter S. Wang , Jin Wang , Shankar Somasundaram , Jean-Louis Gauvreau , Charles A. Dennean , Erdem Bala , Afshin Haghighat
CPC分类号： H04W74/0833 , H04L5/0048 , H04L27/2613 , H04W72/042 , H04W74/002 , H04W74/004 , H04W74/0866
摘要： Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers.
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17.发明授权Method and apparatus for random access in multicarrier wireless communications 有权多载波无线通信中随机接入的方法和装置公开(公告)号：US09253802B2
公开(公告)日：2016-02-02
申请号：US14296773
申请日：2014-06-05
发明人： Ghyslain Pelletier , Stephen E. Terry , Paul Marinier , Guodong Zhang , Peter S. Wang , Jin Wang , Shankar Somasundaram , Jean-Louis Gauvreau , Charles A. Dennean , Erdem Bala , Afshin Haghighat
CPC分类号： H04W74/0833 , H04L27/2613 , H04W72/042 , H04W74/002 , H04W74/004 , H04W74/0866
摘要： Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers.
摘要翻译： 公开了用于多载波无线通信中的随机接入的方法和装置。 提供了用于物理随机接入信道（PRACH）资源信令，PRACH资源处理，前导码和PRACH资源选择，随机接入响应（RAR）接收，前导码重传以及后续消息的发送和接收的方法和装置。 一种用于通过将UL载波添加到允许的RACH配置集合中来设置允许的多载波上行链路（UL）随机接入信道（RACH）配置的方法，只要触发事件发生并且使用允许的RACH配置来执行随机接入（RA）过程 组。 一种用于通过确定一组可用的UL载波并从所述一组可用的UL载波中选择UL载波来在多载波无线通信中发送数据的方法。
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公开(公告)号：US20240357510A1
公开(公告)日：2024-10-24
申请号：US18752403
申请日：2024-06-24
CPC分类号： H04W52/146 , H04W52/242 , H04W52/262 , H04W52/285 , H04W52/367 , H04W52/42
摘要： The disclosed method and an apparatus are directed to determine an uplink transmission power in in New Radio (NR) systems by a wireless transmit/receive unit (WTRU) for transmitting at least one physical uplink shared channel (PUSCH), using multiple beams toward multiple Tx/Rx points (TRPs). The method includes determining common parameters like a target receive power, a modulation and coding scheme (MCS) specific offset, and a transmit power control (TPC) command parameters common to the multiple beams. he method also includes determining beam-specific parameters like path loss for each beam, a configurable fractional power compensation factor for each beam, and a configurable maximum transmit power level of the each beam, wherein the fractional power compensation factor and the configurable maximum transmit power level for the each beam are determined dynamically or semi-statically based on at least deployment, WTRU mobility, or interference level.
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公开(公告)号：US12127133B1
公开(公告)日：2024-10-22
申请号：US18752403
申请日：2024-06-24
CPC分类号： H04W52/146 , H04W52/242 , H04W52/262 , H04W52/285 , H04W52/367 , H04W52/42
摘要： The disclosed method and an apparatus are directed to determine an uplink transmission power in in New Radio (NR) systems by a wireless transmit/receive unit (WTRU) for transmitting at least one physical uplink shared channel (PUSCH), using multiple beams toward multiple Tx/Rx points (TRPs). The method includes determining common parameters like a target receive power, a modulation and coding scheme (MCS) specific offset, and a transmit power control (TPC) command parameters common to the multiple beams. The method also includes determining beam-specific parameters like path loss for each beam, a configurable fractional power compensation factor for each beam, and a configurable maximum transmit power level of the each beam, wherein the fractional power compensation factor and the configurable maximum transmit power level for the each beam are determined dynamically or semi-statically based on at least deployment, WTRU mobility, or interference level.
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公开(公告)号：US11991667B2
公开(公告)日：2024-05-21
申请号：US17283192
申请日：2019-10-09
IPC分类号： H04W72/02 , H04L1/1867 , H04W72/0446 , H04W72/21 , H04W72/23
CPC分类号： H04W72/02 , H04L1/1896 , H04W72/0446 , H04W72/21 , H04W72/23
摘要： A method of multi-transmit/receive point (multi-TRP) transmission. The method comprises receiving a parameter set and a physical downlink control channel (PDCCH) transmission from each of multiple TRPs; decoding each received PDCCH transmission to obtain a K1 value for each of the multiple TRPs based on each received parameter set; receiving a physical downlink shared channel (PDSCH) transmission from each of the multiple TRPs; determining a PDSCH reception slot location for each received PDSCH transmission; determining, based on each determined PDSCH reception slot location and each obtained K1 value, a candidate PUCCH slot location for each of the multiple TRPs; and determining a selected PUCCH slot location for the multiple TRPs based on comparison of all of the determined candidate PUCCH slot locations, wherein if all of the determined candidate PUCCH slot locations are not the same, the selected PUCCH slot location is a farthest candidate PUCCH slot location.
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