公开(公告)号：US20190141783A1

公开(公告)日：2019-05-09

申请号：US16180938

申请日：2018-11-05

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli ,  Kaushik Chakraborty ,  Tamer Kadous

IPC: H04W88/06 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04W76/27 ,  H04W8/24

CPC classification number: H04W88/06 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/006 ,  H04L5/0098 ,  H04L27/261 ,  H04L27/2666 ,  H04W8/24 ,  H04W36/06 ,  H04W74/0833 ,  H04W76/15 ,  H04W76/27 ,  H04W88/02 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for activating and deactivating high-band connections, such as millimeter wave (mmW) connections while maintaining a low-band connection, based on a state of a user equipment (UE). An initial low-band connection, such as a connection that uses lower frequencies than mmW frequencies, may be established by a UE and a base station, and the base station may configure the UE for one or more high-band connections with one or more high-band base stations. The base station may provide an activation command to the UE to activate a high-band connection, and the UE may determine a currently supported mode for the activated high-band connection and establish the high-band connection based on the currently supported mode.

公开(公告)号：US20190141539A1

公开(公告)日：2019-05-09

申请号：US16182527

申请日：2018-11-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Rahul Malik ,  Kaushik Chakraborty

IPC: H04W16/14 ,  H04L1/00

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive data transmissions on primary cell and transmit feedback for the data transmissions on a secondary cell, where carriers on the secondary cell have a subcarrier spacing that is greater than the subcarrier spacing of carriers on the primary cell. The UE may perform a self-contained transmission by receiving data and transmitting feedback within a single transmission opportunity. The base station may schedule the UE for only downlink transmissions in the primary cell, removing uplink transmission resources and guard periods from slots of primary cell carriers. The UE may transmit other information on the high band cell as well, such as a channel quality indicator or scheduling requests. The base station may apply rate adjustments for downlink transmission in the next slot of a primary cell carrier.

公开(公告)号：US20190082333A1

公开(公告)日：2019-03-14

申请号：US16123899

申请日：2018-09-06

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli ,  Kaushik Chakraborty ,  Tamer Kadous

IPC: H04W24/02 ,  H04B7/0408

Abstract: Methods, systems, and devices for wireless communications are described that provide for partitioning two or more dimensions of an uplink transmission, where different partitions in each partitioned dimension can be used to provide different feedback information. A UE may measure one or more downlink transmissions from a base station (e.g., beam measurements in a beam sweep procedure), and select a partition of one of the partitioned dimensions to indicate feedback related to the measured downlink transmissions. The feedback may indicate, for example, a particular beam that may be used for an active beam pair, beam refinement information, or other feedback. The partitioned dimensions may include one or more of time resource, a frequency resource dimension, a root sequence dimension, a cyclic shift dimension, a time-frequency dimension, or any combination thereof.

公开(公告)号：US20180343681A1

公开(公告)日：2018-11-29

申请号：US16052331

申请日：2018-08-01

Applicant: QUALCOMM Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Aitzaz Ahmad ,  Kaushik Chakraborty

IPC: H04W74/08 ,  H04B7/00 ,  H04W16/28 ,  H04W72/04

Abstract: Wireless communications systems and methods related to performing random access procedures. A base station (BS) receives, from a user equipment (UE), a plurality of random access preambles from a plurality of beam directions, wherein each of the plurality of random access preambles is received from a different beam direction, and wherein the plurality of random access preambles are associated with multiple random access opportunities of a random access attempt. The BS sends, in response to the plurality of random access preambles, a plurality of random access response (RAR) messages in the plurality of beam directions.

公开(公告)号：US20180332567A1

公开(公告)日：2018-11-15

申请号：US15973363

申请日：2018-05-07

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin JOHN WILSON ,  Xiao Feng Wang ,  Tao Luo ,  Sony Akkarakaran ,  Wooseok Nam ,  Sumeeth Nagaraja ,  Shengbo Chen ,  Kaushik Chakraborty

IPC: H04W72/04 ,  H04W24/10

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure a first reference signal, associated with a frequency band of a long term evolution (LTE) system, and a second reference signal associated with a frequency band of a new radio (NR) system. The frequency band of the NR system may overlap the frequency band of the LTE system. The UE may determine first channel state feedback, associated with the frequency band of the LTE system, and second channel state feedback, associated with the frequency band of the NR system, based at least in part on the first reference signal and the second reference signal, respectively. The UE may report the first channel state feedback or the second channel state feedback in uplink control information (UCI). Other aspects are provided.

公开(公告)号：US20180332544A1

公开(公告)日：2018-11-15

申请号：US15958679

申请日：2018-04-20

Applicant: QUALCOMM Incorporated

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Shrenik Patel

IPC: H04W52/42 ,  H04W52/14

CPC classification number: H04W52/42 ,  H04W52/146

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. According to some aspects, the apparatus may identify a first power state and a second power state, wherein the first power state is associated with a first transmission or reception of one or more first beams, and the second power state is associated with a second transmission or reception of one or more second beams; and/or switch from the first power state to the second power state, wherein the apparatus is configured to use at least one of a scheduled gap or at least one intermediate power state between the first power state and the second power state to smooth a transition from the first power state to the second power state. Numerous other aspects are provided.

公开(公告)号：US20180302128A1

公开(公告)日：2018-10-18

申请号：US15951901

申请日：2018-04-12

Applicant: QUALCOMM Incorporated

Inventor： Sony Akkarakaran ,  Tao Luo ,  Makesh Pravin John Wilson ,  Kaushik Chakraborty ,  Wooseok Nam ,  Shengbo Chen

IPC: H04B7/04 ,  H04L5/00 ,  H04L1/16

Abstract: A user equipment (UE) may be configured to communicate a number of transmissions that may each have separate feedback processes. A feedback configuration for providing feedback for such separate feedback processes may be determined based on semi-static signaling and dynamic signaling. In some cases, semi-static signaling, such as radio resource control (RRC) signaling and dynamic signaling, such as downlink control information (DCI), may together provide a feedback configuration for a particular transmission. The semi-static signaling may provide a number of bits of feedback information, an interpretation of the bits of feedback information, or combinations thereof, and dynamic signaling may indicate that one or more of the bits are to have one of a number of available interpretations, may indicate that one or more additional bits are to be included with feedback, of combinations thereof. Feedback techniques as discussed herein may be used to provide feedback for uplink or downlink transmissions.

公开(公告)号：US20180262242A1

公开(公告)日：2018-09-13

申请号：US15845585

申请日：2017-12-18

Applicant: Qualcomm Incorporated

Inventor： Kaushik Chakraborty ,  Tao Luo ,  Sony Akkarakaran ,  Makesh Pravin John Wilson ,  Xiao feng Wang ,  Shengbo Chen

IPC: H04B7/0456 ,  H04L5/00 ,  H04W24/10 ,  H04W72/04

CPC classification number: H04B7/0456 ,  H04B7/0452 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0665 ,  H04B7/0695 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/1469 ,  H04L5/16 ,  H04W24/10 ,  H04W72/042

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of whether to use uplink reference signals or downlink reference signals for uplink precoder determination. The UE may selectively transmit a plurality of uplink reference signals or one or more measurement reports based at least in part on the indication, wherein the one or more measurement reports are determined based at least in part on measuring a plurality of downlink reference signals. The UE may receive an indication of a precoder, of a plurality of precoders, to be used to precode an uplink communication, wherein the precoder is identified based at least in part on the plurality of uplink reference signals or the one or more measurement reports. The UE may precode the uplink communication using the precoder. Numerous other aspects are provided.

公开(公告)号：US09781610B2

公开(公告)日：2017-10-03

申请号：US14133510

申请日：2013-12-18

Applicant: QUALCOMM Incorporated

Inventor： Soumya Das ,  Samel Celebi ,  Kaushik Chakraborty ,  Bongyong Song ,  Samir Salib Soliman

IPC: H04W16/26 ,  H04W24/02 ,  H04W16/02 ,  H04W84/04 ,  H04W92/20

CPC classification number: H04W16/26 ,  H04W16/02 ,  H04W24/02 ,  H04W56/0015 ,  H04W84/045 ,  H04W92/20

Abstract: A method of coordinating a small cell with a plurality of small cells includes estimating backhaul bandwidth and backhaul bandwidth utilization of the small cell; estimating aggregate bandwidth utilization for the small cell and the plurality of small cells based on the estimated backhaul bandwidth utilization for each of the small cells; selecting the small cell as a cluster head for a cluster of the small cells based on the estimated aggregate backhaul bandwidth utilization, the cluster including at least some of the small cells; and communicating, via the cluster head, information between a network entity and the small cells of the cluster.

公开(公告)号：US20170134074A1

公开(公告)日：2017-05-11

申请号：US15291839

申请日：2016-10-12

Applicant: QUALCOMM Incorporated

Inventor： Ozgur Dural ,  Insoo Hwang ,  Won-ick Lee ,  Samir Soliman ,  Mark Maggenti ,  Kaushik Chakraborty ,  Sundar Rajan Krishnamurthy

IPC: H04B7/04 ,  H04B7/08

CPC classification number: H04B7/0805 ,  H04B7/0837

Abstract: A multiple input and multiple output device includes a first input switch, a second input switch, a first set of analog interference cancellation (AIC) circuits, and a second set of AIC circuits. The first input switch is configured to select one of a first transmit input of first transmit inputs or a first transmit input of second transmit inputs. The second input switch is configured to select one of a second transmit input of the first transmit inputs or a second transmit input of the second transmit inputs. The first set of AIC circuits and the second set of AIC circuits are coupled to the first input switch and to the second input switch. The first set of AIC circuits is configured to output a first cancellation signal. The second set of AIC circuits is configured to output a second cancellation signal.