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11.发明公开
公开(公告)号：EP3837884A1
公开(公告)日：2021-06-23
申请号：EP19745801.1
申请日：2019-07-04
发明人： BIN REDHWAN, Sakib , DA SILVA, Icaro L. J. , JOHANSSON, Nicklas , RAMACHANDRA, Pradeepa , MOOSAVI, Reza , EK, Sofia
IPC分类号： H04W36/00
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13.发明授权
公开(公告)号：EP3266272B1
公开(公告)日：2020-08-26
申请号：EP15884101.5
申请日：2015-03-02
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14.发明授权
公开(公告)号：EP3497977B1
公开(公告)日：2020-08-05
申请号：EP17755129.8
申请日：2017-08-11
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15.发明授权
公开(公告)号：EP3520477B1
公开(公告)日：2019-11-06
申请号：EP17784031.1
申请日：2017-09-25
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公开(公告)号：EP3520478A1
公开(公告)日：2019-08-07
申请号：EP17784411.5
申请日：2017-09-28
发明人： FRENGER, Pål , GUNNARSSON, Fredrik , ZETTERBERG, Kristina , RAMACHANDRA, Pradeepa , MOOSAVI, Reza
IPC分类号： H04W36/00
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公开(公告)号：EP3332590B1
公开(公告)日：2019-05-01
申请号：EP15901099.0
申请日：2015-08-07
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公开(公告)号：EP3360264B1
公开(公告)日：2018-12-12
申请号：EP15782091.1
申请日：2015-10-05
发明人： MOOSAVI, Reza , FODOR, Gabor , HESSLER, Martin
CPC分类号： H04B7/043 , H04B7/04 , H04B7/0413 , H04B7/0417 , H04B7/0478 , H04B7/0617 , H04B7/0626 , H04B7/0634 , H04B7/0665 , H04B7/0842 , H04L5/0048 , H04L25/03 , H04L2025/03426 , H04W88/08
摘要： According to the teachings herein, a wireless device enhances uplink channel estimation at a node in a supporting wireless communication network by beamforming its uplink reference signal transmission towards the node, and correspondingly compensates for the effect of that beamforming when receiving a downlink transmission that was adapted in dependence on the uplink channel transmission. Such processing provides significant advantages in Multiple-Input-Multiple-Output, MIMO, systems that use a potentially large number of antennas for downlink MIMO transmissions and assume reciprocity between the uplink and downlink channels. In particular, uplink beamforming increases the received signal quality of the uplink reference signal used for estimating the uplink channel, while “automatic” compensation by the wireless device of the corresponding downlink transmission obviates the need for the network to know which precoder was used for uplink beamforming, or even that uplink beamforming is in use.
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公开(公告)号：EP3342219A1
公开(公告)日：2018-07-04
申请号：EP15902377.9
申请日：2015-08-25
发明人： MOOSAVI, Reza , HESSLER, Martin
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0051 , H04L5/0064 , H04L25/0202 , H04W16/28
摘要： There is provided mechanisms for assigning uplink pilot reference signals. A method is performed by a wireless device. The method comprises receiving an uplink grant and a downlink assignment for the wireless device, the uplink grant being associated with initially assigned uplink pilot reference signals. The method comprises determining at least one reciprocity pilot reference signal from the initially assigned uplink pilot reference signals, the uplink grant, and the downlink assignment. The method comprises transmitting the at least one reciprocity pilot reference signal in the uplink grant. There is provided mechanisms for detecting such uplink pilot reference signals.
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公开(公告)号：EP3317976A1
公开(公告)日：2018-05-09
申请号：EP15739359.6
申请日：2015-07-03
发明人： MOOSAVI, Reza , FODOR, Gabor
CPC分类号： H04B7/0456 , H04B7/0404 , H04B7/0617 , H04B7/0686 , H04L5/005 , H04W4/025 , H04W72/042
摘要： Embodiments herein relate to a method performed by a wireless device (10) for transmitting uplink reference signal to a radio network node in a wireless communication network. The wireless device (10) determines to beamform a transmission of an uplink reference signal for channel estimation when a condition is fulfilled. The wireless device (10) transmits the uplink reference signal to the radio network node (12) in a beamformed manner when the condition is fulfilled.
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