公开(公告)号：US20200351878A1

公开(公告)日：2020-11-05

申请号：US16862350

申请日：2020-04-29

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Gabi Sarkis ,  Navaneet Reddy Danda ,  Hobin Kim ,  Hari Sankar ,  Peter Pui Lok Ang ,  Joseph Binamira Soriaga

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described Techniques described may be utilized to avoid errors caused by resource allocation calculations, which may be indicated via higher layer signaling and/or determined within DCI. A base station may transmit downlink control information indicating resource allocation types to avoid errors. In other cases, the UE and/or base station may designate a particular resource block group size to avoid the potential errors. The UE and/or base station may calculate a number of resource blocks groups for a bandwidth part and allocate the size of the resource block group based on the calculation. The UE and/or base station may conduct a comparison between a bandwidth part size and a resource block group size to determine whether to designate a different resource block group size to avoid the errors. Similar techniques may be utilized in allocating resources for precoding resource block groups.

公开(公告)号：US10819482B2

公开(公告)日：2020-10-27

申请号：US15683491

申请日：2017-08-22

Applicant: QUALCOMM Incorporated

Inventor： Pavan Kumar Vitthaladevuni ,  Jing Jiang ,  Alexandros Manolakos ,  Tingfang Ji ,  Joseph Binamira Soriaga ,  June Namgoong

IPC: H04L5/00 ,  H04W52/24 ,  H04W52/32 ,  H04W52/14 ,  G01S5/00 ,  H04W72/04 ,  H04W72/08 ,  H04L5/14 ,  H04B17/27 ,  H04B7/0413 ,  H04W88/02

Abstract: Aspects of the present disclosure provide methods and apparatuses for sounding reference signal (SRS) enhancements. An exemplary method performed by a user equipment generally includes receiving information indicating a symbol, in a sub-frame of a radio frame used to communicate in the wireless network, for transmission of sounding reference signals (SRSs), wherein a location of the symbol in the sub-frame is based, at least in part, on a location of the UE and transmitting a SRS in the symbol based on the received information.

公开(公告)号：US10790892B2

公开(公告)日：2020-09-29

申请号：US16532164

申请日：2019-08-05

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Huilin Xu ,  Wanshi Chen ,  Heechoon Lee ,  Peter Gaal

IPC: H04B7/06 ,  H04L5/00 ,  H04L1/00 ,  H04W76/27

Abstract: Certain aspects of the present disclosure provide techniques for rate matching PDSCH around NZP CSI RS transmissions in multi-TRP scenarios. In some cases, a network entity may signal a rate matching behavior to a user equipment (UE) for processing a physical downlink shared channel (PDSCH) configured with a first quasi co-location association and transmitted from a first transmission reception point (TRP) that potentially collides with one or more types of non-zero power (NZP) reference signals (RS) configured with a second quasi co-location association and transmitted from a second TRP using one or more resource sets.

公开(公告)号：US20200244419A1

公开(公告)日：2020-07-30

申请号：US16637067

申请日：2017-08-11

Applicant: Alexandros MANOLAKOS ,  Chenxi HAO ,  Yu ZHANG ,  Wanshi CHEN ,  Peter GAAL ,  QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Chenxi Hao ,  Yu Zhang ,  Wanshi Chen ,  Peter Gaal

IPC: H04L5/00 ,  H04W72/04

Abstract: 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.

公开(公告)号：US20200229009A1

公开(公告)日：2020-07-16

申请号：US16738969

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Alexandros Manolakos ,  Tingfang Ji

IPC: H04W24/08 ,  H04B17/318 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) served by a first cell and a second UE served by a second cell may experience cross link interference (CLI). The UEs may have different subcarrier spacing (SCS) configurations. For example, the uplink SCS of the aggressor UE may be different from the downlink SCS of the victim UE. The serving base stations may configure the UEs with one or more parameters for generating and measuring a signal used to manage the CLI. The parameters may be based on the uplink SCS of the aggressor and the downlink SCS of the victim. The aggressor UE may apply the parameters to generate the CLI measurement signal, and the victim UE may apply the parameters to measure the CLI measurement signal, so the signal from the transmitter fits into the resource grid of the receiver.

公开(公告)号：US20200221322A1

公开(公告)日：2020-07-09

申请号：US16773778

申请日：2020-01-27

Applicant: QUALCOMM Incorporated

Inventor： Wenjun Li ,  Tao Luo ,  Alexandros Manolakos

IPC: H04W24/02 ,  H04W76/10 ,  H04W72/04 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communication are disclosed. Flexible interleaving configurations may be employed to support various operations, including beamforming. Flexible interleaving may include dynamically or semi-statically determining a combination of bit-level, tone-level, tone-group level, or other interleaving technique for one or more transmissions. The interleaving configuration may be based on delay spread, a coherence bandwidth, a signal to noise ratio, a Doppler spread, or a combination thereof. An interleaving configuration may be a determination may be made by a base station or some other network entity and explicitly signaled to another device. Additionally or alternatively, the determination may be made based on one or more implicit rules, which may be based on a variety of factors (e.g., available bandwidth, modulation and coding scheme (MCS), code block (CB) size). Further, interleaving may be enabled (or disabled) under certain conditions.

公开(公告)号：US20200154402A1

公开(公告)日：2020-05-14

申请号：US16670050

申请日：2019-10-31

Applicant: QUALCOMM Incorporated

Inventor： Heechoon Lee ,  Peter Gaal ,  Alexandros Manolakos ,  Tao Luo ,  Huilin Xu

IPC: H04W72/04 ,  H04W56/00 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a carrier aggregation (CA) configuration for communications on a set of cells. The UE may determine that signals transmitted on the set of cells may be spatially quasi co-located based on the CA configuration and a predetermined relationship rule. For example, the UE may determine that the signals are spatially co-located based on receiving multiple synchronization signal blocks (SSBs) that have a same SSB index, receiving a common SSB, assuming that an SSB and reference signals sourced by the SSB are spatially quasi co-located, receiving a signal from a particular cell of the set of cells, or receiving a common spatial QCL relationship during a configured period of time. Once the spatial QCL relationship is determined, the UE may receive the signals transmitted on the set of cells based on the spatial QCL relationship.

公开(公告)号：US20190159181A1

公开(公告)日：2019-05-23

申请号：US16189244

申请日：2018-11-13

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Tao Luo

IPC: H04W72/04 ,  H04W74/04 ,  H04L5/00 ,  H04B7/08

Abstract: Techniques are described herein for jointly configuring one or more parameters of a plurality of demodulation reference signals (DMRSs) across one or more data channels. A DMRS may be used to estimate one or more channel parameters for a plurality of data channels. To share a DMRS between multiple data channels it may be beneficial to jointly configure one or more parameters of the DMRSs associated with the data channel. A user equipment (UE) may be configured to determine one or more parameters of a plurality of DMRSs using a DMRS pattern configuration that indicates associations between parameters of the different DMRSs. The UE may select a configuration from the one or more configurations of the DMRS pattern configuration based on a variety of factors. For example, the UE may select a joint DMRS configuration based on whether DMRS sharing is enabled or DMRS bundling is enabled.

公开(公告)号：US20190044679A1

公开(公告)日：2019-02-07

申请号：US16053672

申请日：2018-08-02

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Wanshi Chen ,  Peter Gaal

IPC: H04L5/00 ,  H04W72/04

Abstract: The described techniques provide for mapping one or more demodulation reference signal (DMRS) patterns to one or more available channel state information reference signal (CSI-RS) resources. A UE receiving DMRS and CSI-RS signals may determine CSI-RS resources, or reduce its search space for identification of CSI-RS transmissions, based on a DMRS pattern for a transmission. In some cases, a base station may transmit DMRS patterns and a mapping between DMRS patterns and CSI-RS resources to a UE. CSI-RS resources may be configured semi-statically or dynamically by a base station. In some cases, one or more null DMRS patterns may be configured and mapped to CSI-RS resources, and a base station may use a null DMRS pattern for one UE to transmit a DMRS to a different UE, and both UEs may measure channel state information based on an associated CSI-RS transmitted in mapped CSI-RS resources.

公开(公告)号：US20180295637A1

公开(公告)日：2018-10-11

申请号：US15835193

申请日：2017-12-07

Applicant: QUALCOMM Incorporated

Inventor： Alexandros Manolakos ,  Parisa Cheraghi ,  Joseph Binamira Soriaga ,  Tingfang Ji ,  Alexei Yurievitch Gorokhov

IPC: H04W72/12 ,  H04L5/00

Abstract: In some wireless systems (e.g., 5G new radio (NR) systems), a user equipment (UE) may experience coexistence interference when using collocated radio transceivers to simultaneously communicate using different radio access technologies (RATs). To mitigate the coexistence interference, the UE may transmit a configuration request to a base station, where the configuration request may identify that the UE is operating on multiple RATs, identify that the UE is experiencing coexistence interference, or request specific reference signal settings or resources. The base station may modify reference signal transmissions and settings based on the configuration request. For example, the base station may transmit more frequent channel state information reference signals (CSIRS) to the UE, and the UE may report channel state information (CSI) more frequently in response. In other cases, the base station may modify a demodulation reference signal (DMRS) pattern, CSIRS resources, or CSI reporting settings based on the configuration request.