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：US20200022168A1

公开(公告)日：2020-01-16

申请号：US16506743

申请日：2019-07-09

Applicant: QUALCOMM Incorporated

Inventor： Huilin Xu ,  Jing Sun ,  Heechoon Lee ,  Peter Pui Lok Ang

IPC: H04W72/12 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive downlink control information within a control resource set (CORESET) configured with a wideband demodulation reference signal (DMRS) and including disjoint segments of resource blocks (RBs). The downlink control information may be located at least partially within a first segment of the disjoint segments and a second segment of the disjoint segments may be exclusive of the downlink control information. The downlink control information may include a grant of a set of resources for a downlink shared channel that overlaps with the CORESET. The UE may determine a rate matching operation for the wideband DMRS for a downlink shared channel for portions of the set of resources that overlap with the second segment of the disjoint segments, and receive the downlink shared channel on the set of resources according to the determined rate matching operation.

公开(公告)号：US20200008131A1

公开(公告)日：2020-01-02

申请号：US16446120

申请日：2019-06-19

Applicant: QUALCOMM INCORPORATED

Inventor： Kaushik Chakraborty ,  Xiaoxia Zhang ,  Jing Sun ,  Tamer Kadous

IPC: H04W48/10 ,  H04W16/14 ,  H04W16/28 ,  H04W72/04 ,  H04W24/08 ,  H04W74/08

Abstract: Wireless communications systems and methods related to initial network access in a network deployed over a downlink unlicensed band paired with one or more UL bands are provided. A first wireless communication device communicates, with a second wireless communication device in a downlink unlicensed band, a first broadcast communication signal during a discovery time period configured based on a network discovery configuration. The first broadcast communication signal includes a configuration for requesting a second broadcast communication signal when there is no second broadcast communication signal detected within the discovery time period. The first wireless communication device communicates, with the second wireless communication device, a request for the second broadcast communication signal based on the configuration. The first wireless communication device communicates, with the second wireless communication device in the downlink unlicensed band, the second broadcast communication signal outside of the discovery time period in response to the request.

公开(公告)号：US10511373B2

公开(公告)日：2019-12-17

申请号：US16512229

申请日：2019-07-15

Applicant: Qualcomm Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Jing Sun ,  Andrei Dragos Radulescu ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan

IPC: H04B7/06

Abstract: Methods, systems, and devices for wireless communication are described that support overriding a beam monitoring pattern for control channel transmissions based on channel conditions between a user equipment and a base station. A base station may select a beam monitoring pattern for transmitting control channel transmissions, which may include a pattern in which two or more beams are used for control channel transmissions. In the event that a first beam of the beams used in the beam monitoring pattern meets certain metrics, the use of one or more additional beams according to the beam monitoring pattern may be overridden and transmissions continued using the first beam. The metrics for continuing use of the first beam may include channel quality metrics, a number of consecutive successful transmissions using the first beam, one or more other metrics, or any combination thereof.

公开(公告)号：US20190364579A1

公开(公告)日：2019-11-28

申请号：US16401979

申请日：2019-05-02

Applicant: Qualcomm Incorporated

Inventor： Xiaoxia Zhang ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Yongbin Wei ,  Tamer Kadous ,  Jing Sun

IPC: H04W72/12 ,  H04W88/06 ,  H04B7/024 ,  H04L1/00 ,  H04L27/26 ,  H04W16/14 ,  H04B7/0413

Abstract: Wireless communications systems and methods related to serving user equipment devices (UEs) using multi-transmission/reception point (TRP) techniques with dynamic varying TRP clusters are provided. A wireless communication device receives, from a first group of one or more TRPs, a first signal during a first time period. The wireless communication device receives, from a second group of one or more TRPs, a second signal during a second time period, wherein at least one TRP in the second group is not in the first group. The first signal may include a first transport block (TB) and the second signal may include a second TB different from the first TB. Alternatively, the first signal may include a first portion of a TB and the second signal includes a second portion of the TB different from the first portion.

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：US10484146B2

公开(公告)日：2019-11-19

申请号：US15711652

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Jing Jiang

IPC: H04L1/18 ,  H04L1/08 ,  H04W72/04

Abstract: Methods and Apparatus are provided for downlink retransmission of Code Block Groups (CBGs) when CBG level ACK and NACK feedback is unreliable. A User Equipment (UE) transmits to a Base Station (BS) feedback indicating an Acknowledgement (ACK) or a Negative Acknowledgement (NACK) corresponding to each of received set of CBGs transmitted by the BS to the UE. The BS receives and decodes the feedback and transmits back to the UE information regarding a result of the decoding. The UE, based on the received information, determines whether the BS correctly received and decoded the ACK/NACK feedback, and in some cases, ACKs and NACKs corresponding to which CBGs were incorrectly decoded by the BS. The UE processes retransmitted CBGs received from the BS based on this determination.

公开(公告)号：US10484144B2

公开(公告)日：2019-11-19

申请号：US15808568

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Shimman Patel ,  Ozcan Ozturk

IPC: H04L1/18 ,  H04L5/00 ,  H04W72/12 ,  H04L1/08

Abstract: The present disclosure may enable a buffer to accommodate HARQ processes for transmissions with different TTIs when the UE is configured for legacy communications and ULL communications. The apparatus may allocate a first number of HARQ IDs to a first portion of a buffer, the first number of HARQ IDs being associated with a first transmission TTI HARQ process. In addition, the apparatus may allocate a second number of HARQ IDs to a second portion of the buffer. In an aspect, the second number of HARQ IDs may be associated with a second TTI HARQ process. In addition, the first portion and second portion may not change a total buffer size. The apparatus may also receive a HARQ response associated with a HARQ ID allocated to the first portion or the second portion.

公开(公告)号：US10447457B2

公开(公告)日：2019-10-15

申请号：US15648159

申请日：2017-07-12

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Jing Sun ,  Shimman Arvind Patel

IPC: H04L5/00 ,  H04L27/26

Abstract: Methods, systems, and devices for wireless communication are described that provide for identifying uplink transmissions that are to be made using shortened transmission time intervals (sTTIs), and allocating uplink resources for such transmissions. A portion of the uplink resources may be reserved for reference signal transmissions, such as demodulation reference signal (DMRS) transmissions. Resources for a number of sTTIs may be aligned within a slot that comprises a number of orthogonal frequency division multiplexing (OFDM) symbols, and one of the OFDM symbols may have resources reserved that are to be shared by two or more sTTIs within the slot for DMRS transmission. The reserved OFDM symbol may be shared by two overlapping sTTIs in which the reserved OFDM symbol is common between the two sTTIs. A DMRS sequence for each sTTI may be selected based on the allocated uplink resources for the sTTIs.

公开(公告)号：US20190313419A1

公开(公告)日：2019-10-10

申请号：US16373047

申请日：2019-04-02

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Jing Sun ,  Xiaoxia Zhang ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W72/08 ,  H04B1/713 ,  H04W72/04 ,  H04L1/00 ,  H04W28/02 ,  H04L1/18 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In systems supporting multiple communication protocol types (e.g., ultra-reliable low-latency communication and enhance mobile broadband communication), a user equipment may implement multiplexing rules for handling overlapping transmissions of different communication protocols. For example, if lower latency data supports multiplexing with higher latency data and a lower latency resource overlaps (either partially or completely) with a higher latency resource, a number of options can be taken to control multiplexing. Similarly, if low latency uplink control information supports multiplexing with a slot-based physical uplink shared channel, and the physical uplink shared channel has its own uplink control information, a number of options can be taken to control multiplexing. If slot-based uplink control information overlaps (either partially or completely) with low latency data, then, likewise, a number of options can be taken to control multiplexing. Controlling multiplexing may support meeting low latency thresholds.