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公开(公告)号：US20200169364A1
公开(公告)日：2020-05-28
申请号：US16608328
申请日：2018-06-08
申请人： Chenxi HAO , Yu ZHANG , Liangming WU , Chao WEI , Wanshi CHEN , Qualcomm Incorporated
发明人： Chenxi Hao , Yu Zhang , Liangming Wu , Chao Wei , Wanshi Chen
摘要： Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for communicating an uplink grant and a channel state information reference signal (CSI-RS) trigger. A wireless device may identify e a pending collision for a slot of a carrier between a CSI-RS and uplink data. The wireless device may determine a communication configuration for the CSI-RS and the uplink data such that no collision occurs. The determined communication configuration for the CSI-RS may include delaying one of the colliding signals, transmitting only one of the colliding signals and suppressing the other, or reconfiguring the slot such that both signals can be transmitted successfully. Additionally, the UE and the base station may determine a CSI reporting configuration based on the determined communication configuration.
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公开(公告)号：US20200092070A1
公开(公告)日：2020-03-19
申请号：US16615562
申请日：2018-06-12
申请人： Liangming WU , Wanshi CHEN , Yu ZHANG , Chao WEI , Chenxi HAO , QUALCOMM Incorporated
发明人： Liangming Wu , Wanshi Chen , Yu Zhang , Chao Wei , Chenxi Hao
IPC分类号： H04L5/00
摘要： A signaling design for multiple aperiodic channel state information (M-A-CSI) feedback is disclosed. In new radio (NR) networks, there may be scenarios where M-A-CSI are triggered and reported simultaneously. Timing issues may arise because of the different delay periods for difference CSI processes and reporting. In a first aspect, a general set of delay times for the M-A-CSI maybe signaled to the user equipment (UE) from which a candidate set is selected by the UE based on various CSI related settings. An indication from the base station may then be used to select the delay from the candidate set. In a second aspect, a delay period may be selected from the set of delays associated with and corresponding to the M-A-CSI.
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公开(公告)号：US20200178240A1
公开(公告)日：2020-06-04
申请号：US16615534
申请日：2018-06-15
申请人： Yu ZHANG , Chao WEI , Liangming WU , Wanshi CHEN , QUALCOMM Incorporated
发明人： Yu Zhang , Chao Wei , Liangming Wu , Wanshi Chen
摘要： Reporting aperiodic channel state information (A-CSI) via a physical uplink control channel (PUCCH) is disclosed. A UE receives a configuration to report aperiodic channel state information (A-CSI) using physical uplink control channel (PUCCH). The UE can report lightweight A-CSI via short/long PUCCH or may report heavy A-CSI via short/long PUCCH. The UE receives a trigger signal for PUCCH-based A-CSI reporting either by a dedicated downlink grant or by a group common DCI. When triggered via a DCI-based trigger, the PUCCH resource can be either a resource used for HARQ-ACK feedback, e.g., short PUCCH; or a semi-static configured PUCCH resource, e.g., either short PUCCH or long PUCCH. When triggered via a group common DCI-based trigger, the PUCCH resource can be either semi-statically configured, or dynamically indicated.
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公开(公告)号：US20210152303A1
公开(公告)日：2021-05-20
申请号：US16623009
申请日：2018-06-13
申请人： Chenxi HAO , Yu ZHANG , Wanshi CHEN , Chao WEI , Qualcomm Incorporated
发明人： Chenxi Hao , Yu Zhang , Wanshi Chen , Cha Wei , Liangming Wu
IPC分类号： H04L5/00 , H04B7/0456 , H04B7/06 , H04W24/10
摘要： Methods, systems, devices, and apparatus for wireless communication are described that relate to transmission of a set of precoded reference signals, and using a physical resource group (PRG) size for the resources carrying the set of reference signals for channel estimation at a user equipment (UE). For example, a base station may apply a precoding matrix to a set of reference signals, and the reference signals may be configured on a set of resources. In such cases, the resources including these reference signals having a same precoding may be included in a PRG, and a size of the PRG may refer to a number of precoded reference signals for which the precoding is the same. Based on the received reference signals and the PRG size the UE may perform channel estimation based on the PRG size and transmit channel state information (CSI) to the base station.
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公开(公告)号：US11245451B2
公开(公告)日：2022-02-08
申请号：US16642197
申请日：2018-09-08
申请人： Chenxi Hao , Yu Zhang , Chao Wei , Wanshi Chen , Hao Xu
发明人： Chenxi Hao , Yu Zhang , Chao Wei , Wanshi Chen , Hao Xu
摘要： Certain aspects of the present disclosure relate to communication systems, and more particularly, to a partial channel state information reference signal (CSI-RS) port indication. A method by a base station (BS) includes configuring a user equipment (UE) with a CSI-RS resource, of one or more CSI-RS resources associated with a CSI report. The CSI-RS includes a set of CSI-RS ports. The BS provides a first indication to the UE of a subset of groups of the CSI-RS ports to be used by the UE for channel measurements and/or a second indication to the UE of a subset of groups of the CSI-RS to be used by the UE for interference measurements. Based on the indication, the UE performs channel measurements and/or interference measurements using the indicated subset of CSI-RS ports.
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公开(公告)号：US20200244419A1
公开(公告)日：2020-07-30
申请号：US16637067
申请日：2017-08-11
申请人： Alexandros MANOLAKOS , Chenxi HAO , Yu ZHANG , Wanshi CHEN , Peter GAAL , QUALCOMM Incorporated
发明人： Alexandros Manolakos , Chenxi Hao , Yu Zhang , Wanshi Chen , Peter Gaal
摘要： Wireless communication that includes transmission, reception, and configuration of a CSIRS with a configurable band-width is discussed. A base station/gNB may determine a number of antenna ports to be used for wireless communication. The base station/gNB may allocate a first plurality of frequency resources for the transmission of the CSIRS based on the determined number of antenna ports, and may transmit the CSIRS over the first plurality of frequency resources. A mobile device may receive the CSIRS over the first plurality of frequency resources and estimate at least one of channel quality and interference associated with the first plurality of frequency resources based on the received CSIRS.
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公开(公告)号：US11251842B2
公开(公告)日：2022-02-15
申请号：US16645894
申请日：2018-09-11
申请人： QUALCOMM Incorporated , Yu Zhang , Chenxi Hao , Wanshi Chen , Peter Gaal , Hao Xu
发明人： Yu Zhang , Chenxi Hao , Wanshi Chen , Peter Gaal , Hao Xu
IPC分类号： H04B7/0456 , H04B7/06 , H04L5/00
摘要： Aspects of the present disclosure relate to techniques for non-codebook based uplink (UL) transmission. In some cases, a user equipment (UE) may signal, to a network entity, capability information of the UE for non-codebook uplink transmissions. The UE may then receive, signaling, from the network entity, indicating a plurality of sounding reference signal (SRS) configurations based at least on the signaled capability information, wherein at least one configuration indicates at least one SRS resource and determine a plurality of precoding candidates, wherein each precoding candidate is associated with a configured SRS resource. The UE may then transmit the SRSs using the associated precoding candidates.
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公开(公告)号：US11490413B2
公开(公告)日：2022-11-01
申请号：US16633399
申请日：2018-09-07
申请人： QUALCOMM Incorporated , Yu Zhang , Hao Xu , Chao Wei , Peng Cheng , Wanshi Chen , Peter Gaal , Durga Prasad Malladi
发明人： Yu Zhang , Hao Xu , Chao Wei , Peng Cheng , Wanshi Chen , Peter Gaal , Durga Prasad Malladi
摘要： Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.
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公开(公告)号：US11121752B2
公开(公告)日：2021-09-14
申请号：US15780451
申请日：2016-01-07
申请人： QUALCOMM Incorporated , Chao Wei , Wanshi Chen , Peter Gaal , Yu Zhang
发明人： Chao Wei , Wanshi Chen , Peter Gaal , Yu Zhang
IPC分类号： H04B7/06 , H04L5/00 , H04W24/10 , H04B7/0456 , H04W72/08
摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a CSI process is defined that may be used to identify an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.
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公开(公告)号：US10826577B2
公开(公告)日：2020-11-03
申请号：US15531131
申请日：2015-01-19
申请人： QUALCOMM Incorporated , Chao Wei , Wanshi Chen , Peter Gaal , Yu Zhang
发明人： Chao Wei , Wanshi Chen , Peter Gaal , Yu Zhang
IPC分类号： H04B7/0456 , H04B7/06 , H04B7/17 , H04B7/26
摘要： Enhanced channel state information (CSI) feedback is disclosed for full dimensional multiple input, multiple output (FD-MIMO) operations. In one aspect, a single CSI process is defined that is configured with an azimuth and elevation CSI-reference signal (RS) ports. A user equipment (UE) will send a precoding matrix indictor (PMI) report including a precoding matrix indicator (PMI) for the azimuth ports and a PMI for the elevation ports. One of the PMIs is assigned a low rank. The base station will use the two PMIs to create a whole channel precoding matrix. In another aspect, a single CSI process is configured having a plurality of CSI-RS resources. The UE generates channel measurement information for each of the CSI-RS resources, but only sets a CSI report to the base station of a subset of the total number of resources.
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