公开(公告)号：US20210297226A1

公开(公告)日：2021-09-23

申请号：US17204644

申请日：2021-03-17

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Attia Abotabl ,  Muhammad Sayed Khairy Abdelghaffar ,  Huillin Xu ,  Wanshi Chen ,  Krishna Kiran Mukkavilli ,  Tingfang Ji ,  Shimman Arvind Patel

IPC: H04L5/14 ,  H04W72/04

Abstract: Full-duplex communication techniques are described. Some aspects may utilize full-duplex-slot formats, such as may be provided in addition to or in the alternative to uplink, downlink, and flexible slot formats. A full-duplex slot implemented in accordance with a full-duplex-slot format provides a slot in which the frequency band may be used for both uplink and downlink transmissions. Downlink and/or uplink transmissions of a full-duplex slot may occur in overlapping frequency bands or in adjacent frequency bands. A first wireless device may transmit slot signaling comprising one or more full-duplex-slot-indicator parameters. A second wireless device may base one or more full-duplex slot configuration determinations on a full-duplex-slot configuration. The second wireless device may apply one or more full-duplex-slot-indicator-parameter rules with respect to full-duplex-slot-indicator parameters for determining a full-duplex-slot format. Other aspects and features are also claimed and described.

公开(公告)号：US20210152418A1

公开(公告)日：2021-05-20

申请号：US17063517

申请日：2020-10-05

Applicant: QUALCOMM Incorporated

Inventor： Muhammad Sayed Khairy Abdelghaffar ,  Hung Dinh Ly ,  June Namgoong ,  Huilin Xu ,  Peter Pui Lok Ang ,  Shimman Arvind Patel ,  Krishna Kiran Mukkavilli ,  Joseph Patrick Burke

IPC: H04L12/24 ,  H04L5/14 ,  H04W72/04 ,  H04B7/06

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify one or more radio frequency (RF) spectrum bands for full-duplex communications, and may signal an indication of the UE's capability to support full-duplex communications for each RF spectrum band. The UE may further receive one or more configurations for full-duplex communications, which, in some examples, may be based on the UE's indicated capabilities. As an example, the UE may identify a guard band configuration for full-duplex communications, where the guard band configuration may be based on one or more aspects of resources used for the full-duplex communications. In other cases, the UE may identify a transmission hopping or antenna switching configuration for full-duplex communications. In any case, the UE may communicate with a base station in accordance with the one or more configurations and the UE's capabilities.

公开(公告)号：US11006409B2

公开(公告)日：2021-05-11

申请号：US16390329

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Peter Gaal ,  Srinivas Yerramalli ,  Hao Xu ,  Jing Sun ,  Shimman Arvind Patel ,  Aamod Khandekar

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00 ,  H04W76/27 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.

公开(公告)号：US20210127340A1

公开(公告)日：2021-04-29

申请号：US17144748

申请日：2021-01-08

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Peter Gaal ,  Hao Xu ,  Michael Mao Wang

IPC: H04W52/34 ,  H04W52/36 ,  H04W72/04 ,  H04W52/14 ,  H04W52/16 ,  H04W28/06

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may determine separate uplink (UL) power limitations for multiple transmission time interval (TTI) durations based on distinct power control parameters. In some cases, an adjustment factor or a power backoff may be applied to communications using one TTI duration to ensure that total transmit power does not exceed a threshold. The UE and the serving base station may also identify one or more demodulation reference signal (DMRS) windows. UL data transmissions may be demodulated based on a DMRS sent during the same window. Transmit power control (TPC) commands may be applied at the beginning of each window. However, if an UL transmission is scheduled at the beginning of the window, the UE may wait until a DMRS transmission or until no more transmissions are scheduled for the window before applying the TPC adjustment.

公开(公告)号：US20210111848A1

公开(公告)日：2021-04-15

申请号：US17099181

申请日：2020-11-16

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Hao Xu

IPC: H04L5/00

Abstract: Control information may be transmitted for different TTI lengths. Different control information for the different TTIs may be transmitted using control channel resources that are established for communication of control information, such as a physical downlink control channel (PDCCH), for example. Control information for a first TTI may be located in a first set of resources, and control information for a second TTI may be located in a second set of resources. The first set of resources may be located within a first search space that may be searched by a user equipment (UE) to identify the first control information. The second set of resources may be located within a second search space that may be searched by the UE to identify the second control information.

公开(公告)号：US10979181B2

公开(公告)日：2021-04-13

申请号：US16409367

申请日：2019-05-10

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04L1/18 ,  H04W72/04 ,  H04W72/12 ,  H04W74/02 ,  H04L5/00

Abstract: Systems, methods, and apparatuses are described for wireless communication, including for hybrid automatic repeat request (HARQ) feedback in a system that supports communications using transmission time intervals (TTIs) of different durations. A base station may identify a user equipment's (UE) capability to provide HARQ feedback for transmissions that use TTIs of a shorter duration relative to other TTIs supported in the system. The base station may select a HARQ timing mode based on the capability of the UE and may indicate the selected HARQ timing mode to the UE. The base station may then transmit one or more data transmissions to the UE using the reduced TTIs. The UE may respond with HARQ feedback based on the HARQ timing mode. The HARQ timing mode may be based on different response times based on the location of the data transmission within a TTI or relative to data transmission in other TTIs.

公开(公告)号：US10966186B2

公开(公告)日：2021-03-30

申请号：US15444065

申请日：2017-02-27

Applicant: QUALCOMM incorporated

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

IPC: H04W72/04 ,  H04L5/00 ,  H04L1/18 ,  H04J1/00 ,  H04L12/26 ,  H04L5/14

Abstract: Methods, systems, and devices for wireless communication are described. In one example, an indication in a first control message in a control region of a first transmission time interval (TTI) identifies a data region of the first TTI. A data region of the second TTI may be identified based on a grant of resources received in a second control message of a second TTI, where the data region of the first TTI and the control region of the second TTI are frequency division multiplexed with the data region of the second TTI. Other examples include a downlink grant at the beginning of a control region and uplink grants at the end of the control region. In other examples, a downlink grant for a user equipment (UE) may include an indication of resources allocated to the UE in that resource block and a second resource block.

公开(公告)号：US20210075677A1

公开(公告)日：2021-03-11

申请号：US16951950

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Seyedkianoush Hosseini ,  Alberto Rico Alvarino ,  Shimman Arvind Patel

IPC: H04L12/24 ,  H04W76/27 ,  H04W72/04 ,  H04W24/02 ,  H04W52/18 ,  H04L5/00 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems as described herein may be configured to support several service types with different latency, reliability, or throughput rates or standards. One such service type may be referred to as high-reliability, low latency communication (HRLLC). Enhancements to improve HRLLC performance in coexistence with and as a complement to legacy service types, such as LTE are described. These include, for example, downlink and uplink control enhancements, channel state information (CSI) feedback enhancements, physical uplink shared channel (PUSCH) enhancements, and UL power control enhancements to support HRLLC.

公开(公告)号：US20210058961A1

公开(公告)日：2021-02-25

申请号：US17078386

申请日：2020-10-23

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/02

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station may use low latency communications to improve the throughput of a wireless link. To facilitate efficient low latency communication, the UE may send UE-initiated CSI reports in addition to periodic and base station-initiated reports. For example, the UE may, in various examples, send UE-initiated CSI reports using contention based spectrum, using a request-to-transmit, or using a CSI differential (i.e., an indicator of a change in channel conditions). The base station may schedule different UEs for uplink low latency communication by providing resources to each UE for CSI and scheduling requests (SRs) using coherent or non-coherent uplink transmissions. The CSI and SR may also be combined with uplink feedback.

公开(公告)号：US10904865B2

公开(公告)日：2021-01-26

申请号：US16129452

申请日：2018-09-12

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Aleksandar Damnjanovic ,  Onkar Jayant Dabeer ,  Peter Gaal ,  Wanshi Chen ,  Shimman Arvind Patel ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W4/00 ,  H04W72/04 ,  H04W28/02 ,  H04W72/14 ,  H04W74/08 ,  H04L1/18 ,  H04W74/00 ,  H04L5/00 ,  H04W76/27 ,  H04J11/00 ,  H04W72/12 ,  H04W74/02

Abstract: Certain aspects relate to methods and apparatus for latency reduction for UEs in a RRC connected mode. During contention-based uplink access by groups of UEs within a subframe, an eNB may decode the received uplink transmission based, at least in part, on the assigned group of resources assigned to the UE and used for transmission. Additional orthogonalization techniques such as reduced TTI size can be used to reduce collisions among different users performing contention-based transmissions. Furthermore, when the eNB fails to successfully decode the uplink transmission, the eNB may identify the UE that sent the uplink transmission based on a detected reference signal and may transmit an uplink assignment to the identified UE.