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公开(公告)号：US11974282B2
公开(公告)日：2024-04-30
申请号：US16730817
申请日：2019-12-30
发明人： Young-Han Nam , Sudhir Ramakrishna , Li Guo , Boon Loong Ng
IPC分类号： H04W72/21 , H04L5/00 , H04L27/26 , H04W72/0446 , H04W72/0453 , H04W72/23 , H04W74/00 , H04L25/03
CPC分类号： H04W72/21 , H04L5/00 , H04L5/0053 , H04L27/2602 , H04W72/0446 , H04W72/0453 , H04W72/23 , H04W74/006 , H04L5/0007 , H04L2025/03796 , H04L27/26025
摘要： A method of user equipment (UE) in a wireless communication system. The method comprises receiving, from a base station (BS), a downlink signal including position information for orthogonal frequency division multiplexing (OFDM) symbols of a short physical uplink control channel (PUCCH), determining, based on the position information, a position of the OFDM symbols of the short PUCCH included in a slot, and transmitting, to the BS, the short PUCCH using the OFDM symbols based on the determined position.
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公开(公告)号：US11678315B2
公开(公告)日：2023-06-13
申请号：US17305156
申请日：2021-06-30
IPC分类号： H04W72/0453 , H04L5/14 , H04L5/00 , H04W72/23
CPC分类号： H04W72/0453 , H04L5/001 , H04L5/0098 , H04L5/1469 , H04W72/23
摘要： One or more embodiments provide a method implemented in a user equipment (UE) used in a wireless communications system. The method includes transmitting an indication to a base station that the UE is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation. The method also includes receiving an uplink carrier frequency switching pattern from the base station. The method also includes switching uplink carrier frequencies based on the uplink carrier frequency switching pattern.
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公开(公告)号：US11546787B2
公开(公告)日：2023-01-03
申请号：US13888659
申请日：2013-05-07
发明人： Krishna Sayana , Young-Han Nam , Jin-Kyu Han , Boon Loong Ng
摘要： A method and apparatus report channel state information (CSI) feedback of a user equipment (UE) in a coordinated multipoint communication system. The method includes identifying, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The method also includes using the identified interference measurement resource to derive an interference measurement. The apparatus includes a controller configured to, when downlink transmissions to the UE are configured with at least two CSI subframe subsets, identify an interference measurement resource within one of the CSI subframe subsets belonging to a CSI reference resource. The controller is configured to use the identified interference measurement resource to derive an interference measurement.
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公开(公告)号：US11233550B2
公开(公告)日：2022-01-25
申请号：US16802373
申请日：2020-02-26
发明人： Ahmed Atef Ibrahim , Yeqing Hu , Young-Han Nam , Jianzhong Zhang
IPC分类号： H03D3/18 , H04B7/0456 , H04B7/0417 , H04B7/10 , H04B7/0452
摘要： A base station for generating multi-user precoders. The base station includes a transceiver configured to receive sounding reference signals (SRSs) from a set of user equipments (UEs), and a processor configured to select, for one or more UEs in the set of UEs, one or more codewords from an uplink codebook based on a correlation between the one or more codewords and the one or more SRSs; determine, using a composite downlink codebook, downlink codewords for the selected uplink codewords, respectively, the composite downlink codebook mapping uplink codewords to downlink codewords based on steering angles derived from the uplink codewords; transmit a set of pre-coded channel state information reference signals (CSI-RSs) to the one or more UEs, wherein the pre-coded CSI-RSs are pre-coded based on the determined downlink codewords; and identify a downlink channel matrix based on CSI feedback from the one or more UEs and the pre-coded CSI-RSs.
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公开(公告)号：US11121834B2
公开(公告)日：2021-09-14
申请号：US13920872
申请日：2013-06-18
发明人： Krishna Sayana , Boon Loong Ng , Young-Han Nam , Thomas Novlan , Jinkyu Han , Jianzhong Zhang , Hyojin Lee , Youn-Sun Kim
摘要： Coordinate multi-point (CoMP) transmission is facilitated by resolving collisions between feedback reporting. Based upon the conditions within the network, collision resolution may be by dropping a channel report during a subframe, multiplexing channel reports from a plurality of user equipment, compressing channel reports a plurality of user equipment, and combined reporting, either through joint reports or by using carrier aggregation, for conditions between a user equipment and a plurality of transmission points. New signaling and reporting formats facilitate selection of a collision resolution suitable for current network conditions.
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公开(公告)号：US10965412B2
公开(公告)日：2021-03-30
申请号：US14571194
申请日：2014-12-15
发明人： Krishna Sayana , Boon Loong Ng , Young-Han Nam , Thomas David Novlan , Jinkyu Han , Jianzhong Zhang , Hyojin Lee , Youn-Sun Kim
摘要： Coordinate multi-point (CoMP) transmission is facilitated by resolving collisions between feedback reporting. Based upon the conditions within the network, collision resolution may be by dropping a channel report during a subframe, multiplexing channel reports from a plurality of user equipment, compressing channel reports from a plurality of user equipment, and combined reporting, either through joint reports or by using carrier aggregation, for conditions between a user equipment and a plurality of transmission points. New signaling and reporting formats facilitate selection of a collision resolution suitable for current network conditions.
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公开(公告)号：US20200382353A1
公开(公告)日：2020-12-03
申请号：US16947961
申请日：2020-08-25
发明人： Hongbo Si , Young-Han Nam , Eko Onggosanusi , Yuguang Gao , Le Liu
摘要： A method of a base station (BS) for transmitting synchronization signals in a wireless communication system. The method comprises generating a primary synchronization signal (PSS) including one of multiple PSS sequences that is generated based on a M-sequence of length 127 in a frequency domain, wherein the PSS indicates part of cell identification (ID) information using a cyclic shift performed on the M-sequence generating the PSS; generating a secondary synchronization signal (SSS) including one of multiple SSS sequences that is generated based on multiple BPSK modulated M-sequences of length 127 in the frequency domain, wherein the SSS indicates the cell ID information using cyclic shifts performed on the M-sequences generating the SSS; and transmitting, to a user equipment (UE), the PSS and SSS over downlink channels.
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公开(公告)号：US20200344097A1
公开(公告)日：2020-10-29
申请号：US16946963
申请日：2020-07-13
发明人： Hongbo Si , Young-Han Nam , Youngbum Kim , Taehyoung Kim
摘要： Configuring control information comprises determining a frequency offset including an RB and RE level frequency offset, where the frequency offset is determined based on a lowest RE of an SS/PBCH block and a lowest RE of CORESET for RMSI, jointly configuring, using a first field of 4 bits, the RB level frequency offset with a multiplexing pattern of the SS/PBCH block and the CORESET, a BW of the CORESET, and a number of symbols for the CORESET for a combination of a SCS of the SS/PBCH block and a SCS of the CORESET, configuring using a second field of the 4 bits generating an MIB including the RB level frequency offset and the RE level frequency offset; and transmitting, to a UE, the MIB over a PBCH.
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公开(公告)号：US20200014454A1
公开(公告)日：2020-01-09
申请号：US16575206
申请日：2019-09-18
发明人： Li Guo , Young-Han Nam , Yang Li , Boon Ng
IPC分类号： H04B7/06 , H04B17/309 , H04B7/0408
摘要： A method of user equipment (UE) for beam management in a wireless communication system comprises receiving, from a base station (BS), at least two groups of Tx beams comprising transmit (Tx) signals generated from different antenna panels, the at least two groups of Tx beams transmitted through reference signals; receiving, from the BS, configuration information including a selection constraint for the at least two groups of Tx beams; measuring, based on the configuration information, at least one beam from each of the at least two groups of beams; selecting at least one Tx beam from each of the at least two groups and a same Rx beam set as an Rx beam corresponding to respective selected Tx beams; and transmitting, to the BS, a reporting message including information of the selected Tx beams and the selected same Rx beam set corresponding to the Rx beam.
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公开(公告)号：US20190335462A1
公开(公告)日：2019-10-31
申请号：US16505538
申请日：2019-07-08
摘要： One or more embodiments provide a method implemented in a user equipment (UE) used in a wireless communications system. The method includes transmitting an indication to a base station that the UE is capable of transmitting on a single uplink carrier frequency and downlink carrier aggregation. The method also includes receiving an uplink carrier frequency switching pattern from the base station. The method also includes switching uplink carrier frequencies based on the uplink carrier frequency switching pattern.
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