公开(公告)号：US10660032B2

公开(公告)日：2020-05-19

申请号：US15425944

申请日：2017-02-06

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Taesang Yoo ,  Juan Montojo

IPC: H04W52/02 ,  H04W72/04

Abstract: A control channel transmission may include information for downlink transmissions, and another control channel, such as a physical micro sleep indicator channel (PMSICH), may include information for uplink transmissions that a user equipment (UE) may use to enter a power-saving micro sleep state. A base station may drop PMSICH transmissions in the event that downlink resources are constrained. A UE that receives a PMSICH transmission may determine an uplink transmission duration, and enter a micro sleep state for all or a portion of the uplink transmission duration.

公开(公告)号：US10574565B2

公开(公告)日：2020-02-25

申请号：US15659604

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04L12/28 ,  H04L12/761 ,  H03M13/09 ,  H04L12/18 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04L5/00 ,  H04B7/216 ,  H04W52/14 ,  H04W52/16 ,  H04W52/24 ,  H04W52/38 ,  H04W52/42 ,  H04W52/50 ,  H04W52/56 ,  H04L12/24 ,  H04W76/22 ,  H04W24/08 ,  H04W24/02 ,  H04W76/19 ,  H04W24/04 ,  H04W48/08 ,  H04W92/20

Abstract: Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

公开(公告)号：US10548118B2

公开(公告)日：2020-01-28

申请号：US15592850

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Jing Sun ,  Seyedkianoush Hosseini

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

公开(公告)号：US10542556B2

公开(公告)日：2020-01-21

申请号：US15709086

申请日：2017-09-19

Applicant: QUALCOMM Incorporated

Inventor： Siddhartha Mallik ,  Anastasios Stamoulis ,  Juan Montojo

IPC: H04W88/02 ,  H04W72/12 ,  H04L5/00 ,  H04L27/26 ,  H04W88/08

Abstract: Certain aspects of the present disclosure provide techniques for MCS and/or rank selection for UE jointly served by BSs in a CoMP cluster. As described herein, MCS and/or rank selection may be based, at least in part, on the inter-cluster interference and intra-cluster interference experienced by the UE. According to aspects, a CoMP scheduler may assign a UE served by BSs in a CoMP cluster to one of a first group of UEs or a second group of UEs based, at least in part, on inter-cluster and intra-cluster interference experienced by the UE. The scheduler may assign at least one of a MCS or rank selection to the UE based, at least in part, on the assigned group. The scheduler may provide an indication, to one or more BSs in the CoMP cluster, of the at least one MCS or rank selection assigned to the UE.

公开(公告)号：US10542530B2

公开(公告)日：2020-01-21

申请号：US15818475

申请日：2017-11-20

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Hao Xu ,  Juan Montojo ,  Peter Gaal

IPC: H04W72/04 ,  H04L5/00

Abstract: Certain aspects of the present disclosure relate to techniques for reducing the decoding complexity for low cost devices (e.g., low cost UEs). One technique may include simplifying the PDCCH format. This may include generating a compact DCI format for transmitting DCI to a low cost device. The compact DCI format may correspond to at least one standard DCI format used by a regular UE and may comprise a reduced number of bits when compared to the standard DCI format. Another technique may include reducing the number of blind decodes. This technique may include selecting a set of resources for transmitting DCI from a limited set of decoding candidates, such that a receiving low cost device need only perform blind decodes for the limited set of decoding candidates.

公开(公告)号：US10536253B2

公开(公告)日：2020-01-14

申请号：US14960067

申请日：2015-12-04

Applicant: QUALCOMM Incorporated

Inventor： Jelena M. Damnjanovic ,  Juan Montojo ,  Wanshi Chen ,  Peter Gaal

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04W72/04

Abstract: In accordance with one or more aspects and corresponding disclosure thereof, various aspects are described in connection with channel state information (CSI) for a plurality of downlink carriers. In providing the CSI from a user equipment (UE), respective CSI reports may be determined for the plurality of downlink carriers. The respective CSI reports may be scheduled to be conveyed on a plurality of uplink carriers in a subframe. A determination may be made as to whether the UE is power limited for that subframe. Based at least in part on the determination, the respective CSI reports may be transmitted on the plurality of uplink carriers in the subframe, or transmitted on a subset of the plurality of uplink carriers in the subframe, or dropped.

公开(公告)号：US20190394755A1

公开(公告)日：2019-12-26

申请号：US16561543

申请日：2019-09-05

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Jelena M. Damnjanovic ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/04 ,  H04L27/00 ,  H04W36/00 ,  H04W48/12 ,  H04W52/24 ,  H04W52/26 ,  H04W52/14 ,  H04L25/02

Abstract: A method of wireless communication provides narrow bandwidth operation within a wider LTE system bandwidth. Wideband information is transmitted to a first set of user equipments (UEs). Also, narrowband information is transmitted to a second set of UEs. The second set of UEs operate in a narrower bandwidth than the first set of UEs.

公开(公告)号：US10484212B2

公开(公告)日：2019-11-19

申请号：US16041436

申请日：2018-07-20

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Dinkar Vasudevan ,  Seyedkianoush Hosseini ,  Jing Sun ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Juan Montojo

IPC: H04L12/28 ,  H04L25/03 ,  H04B17/14 ,  H04L27/34 ,  H04L12/703 ,  H04B7/024 ,  H04L25/02 ,  H04B17/11 ,  H04B17/30 ,  H04B17/309

Abstract: Wireless communications systems and methods related to over-the-air uplink-downlink (UL-DL) reciprocity calibration. A central unit transmits downlink (DL) calibration reference signal (RS) and a calibration request. The central unit receives, in response to the calibration request, a first uplink (UL) calibration RS and a first DL channel estimate associated with a first transmission point (TP) and a first wireless communication device. The central unit transmits a DL coordinated multipoint (CoMP) joint transmission signal according to an uplink-downlink (UL-DL) reciprocity calibration. The UL-DL reciprocity calibration is based on at least a first UL channel estimate based on the first UL calibration RS, the first DL channel estimate, a second UL channel estimate associated with a second TP and the first wireless communication device, and a second DL channel estimate associated with the second TP and the first wireless communication device.

公开(公告)号：US10462755B2

公开(公告)日：2019-10-29

申请号：US16007589

申请日：2018-06-13

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Wanshi Chen ,  Valentin Alexandru Gheorghiu ,  Juan Montojo ,  Yi Huang ,  Tao Luo

IPC: H04W52/36 ,  H04W52/32 ,  H04W52/42 ,  H04W52/24 ,  H04W52/14

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine one or more power parameters that contribute to a transmit power level for a sounding reference signal (SRS), wherein the one or more power parameters are configured differently for different types of SRS transmissions; determine the transmit power level for the SRS based at least in part on the one or more power parameters; and transmit the SRS using the transmit power level. Numerous other aspects are provided.

公开(公告)号：US20190327051A1

公开(公告)日：2019-10-24

申请号：US16419268

申请日：2019-05-22

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind PATEL ,  Wanshi Chen ,  Juan Montojo ,  Peter Gaal ,  Seyedkianoush Hosseini ,  Aleksandar Damnjanovic ,  Hao Xu

IPC: H04L5/00 ,  H04B7/0413 ,  H04W72/04

Abstract: The present methods and apparatus enable transmission of an interlaced reference signal for two UEs using a comb structure. In some aspects, the present methods and apparatus may allocate resources and indicate whether a first UE and a second UE are to transmit DM-RS with a comb structure in a single slot based on the allocation. Further, in some aspects, the present methods and apparatus may allocate resources and transmit information indicating whether a first UE is to transmit DM-RS in a first slot or in both a first slot and a second slot within a subframe.