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公开(公告)号：US20190021107A1
公开(公告)日：2019-01-17
申请号：US15648229
申请日：2017-07-12
Applicant: QUALCOMM Incorporated
Inventor： Francesco Negro , Stefan Brueck
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a first grant to perform a first uplink transmission in a first subframe using a first component carrier. The UE may receive a second grant to perform a second uplink transmission in a second subframe adjacent the first subframe in time. The UE may determine to null one or more symbols of the uplink transmission in the first subframe based at least in part on the second grant. In some cases, the UE may determine to null the one or more symbols of the first uplink transmission is based at least in part on an availability of a single radio frequency (RF) frontend for use by the UE.
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公开(公告)号：US20150010099A1
公开(公告)日：2015-01-08
申请号：US14318122
申请日：2014-06-27
Applicant: QUALCOMM Incorporated
Inventor： Jamie Menjay Lin , Ashok Mantravadi , Francesco Negro , Petru Cristian Budianu , Taesang Yoo , Xiaoxia Zhang , Tao Luo
IPC: H04B7/04
CPC classification number: H04B7/0404 , H04B7/0608 , H04B7/0691 , H04B7/0802 , H04B7/0874
Abstract: Dynamic adjustment of antenna selection period at a wireless communication device or user equipment having two or more antennas. The described approaches consider an antenna selection performance metric. The antenna selection performance metric may include both measurement overhead (capacity loss due to measurements) and antenna switching capacity gain (gain in capacity through switching antenna subsets). The antenna selection performance metric may further include an estimate of UE speed or an antenna selection change rate. The antenna selection period may be adjusted by increasing or decreasing the antenna selection period based on the antenna selection performance metric. Antenna selection may be enabled or disabled based on the antenna selection performance metric.
Abstract translation: 具有两个或多个天线的无线通信设备或用户设备的天线选择周期的动态调整。 所描述的方法考虑天线选择性能度量。 天线选择性能度量可以包括测量开销（由测量引起的容量损失）和天线切换容量增益（通过开关天线子集的容量增益）。 天线选择性能度量还可以包括UE速度或天线选择变化率的估计。 可以通过基于天线选择性能度量来增加或减少天线选择周期来调整天线选择周期。 可以基于天线选择性能度量来启用或禁用天线选择。
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公开(公告)号：US11470480B2
公开(公告)日：2022-10-11
申请号：US16905768
申请日：2020-06-18
Applicant: QUALCOMM Incorporated
Inventor： Francesco Negro , Stefan Brueck , Tae Min Kim , Jing Sun , Aamod Khandekar
Abstract: Techniques for wireless communications are described. A user equipment (UE) may initially configure a set of channel estimation parameters for a set of radio frequency spectrum subbands of a bandwidth part (BWP) of a transmission opportunity (TxOP). In some examples, the UE may identify an unavailable radio frequency spectrum subband within the BWP. Based on the identification, the UE may reconfigure the channel estimation parameters to avoid performing unnecessary channel estimation processes on the unavailable radio frequency spectrum subband. As part of reconfiguring the channel estimation parameters, the UE may set log-likelihood ratio (LLR) values of subcarriers associated with the unavailable radio frequency spectrum subband to a null value, thereby experiencing improvements in efficiency and reliability of channel estimation for the BWP.
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公开(公告)号：US09379789B2
公开(公告)日：2016-06-28
申请号：US14318122
申请日：2014-06-27
Applicant: QUALCOMM Incorporated
Inventor： Jamie Menjay Lin , Ashok Mantravadi , Francesco Negro , Petru Cristian Budianu , Taesang Yoo , Xiaoxia Zhang , Tao Luo
CPC classification number: H04B7/0404 , H04B7/0608 , H04B7/0691 , H04B7/0802 , H04B7/0874
Abstract: Dynamic adjustment of antenna selection period at a wireless communication device or user equipment having two or more antennas. The described approaches consider an antenna selection performance metric. The antenna selection performance metric may include both measurement overhead (capacity loss due to measurements) and antenna switching capacity gain (gain in capacity through switching antenna subsets). The antenna selection performance metric may further include an estimate of UE speed or an antenna selection change rate. The antenna selection period may be adjusted by increasing or decreasing the antenna selection period based on the antenna selection performance metric. Antenna selection may be enabled or disabled based on the antenna selection performance metric.
Abstract translation: 具有两个或多个天线的无线通信设备或用户设备的天线选择周期的动态调整。 所描述的方法考虑天线选择性能度量。 天线选择性能度量可以包括测量开销（由测量引起的容量损失）和天线切换容量增益（通过开关天线子集的容量增益）。 天线选择性能度量还可包括UE速度或天线选择变化率的估计。 可以通过基于天线选择性能度量来增加或减少天线选择周期来调整天线选择周期。 可以基于天线选择性能度量来启用或禁用天线选择。
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