公开(公告)号：US11284308B2

公开(公告)日：2022-03-22

申请号：US16584366

申请日：2019-09-26

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yisheng Xue ,  Siddhartha Mallik ,  Tamer Kadous ,  Xiaoxia Zhang ,  Taesang Yoo ,  Michael Mingxi Fan ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Jing Sun

IPC: H04W28/26 ,  H04W52/24 ,  H04L5/00 ,  H04W16/14 ,  H04B7/06 ,  H04L27/00 ,  H04L5/14 ,  H04B17/336 ,  H04W74/08 ,  H04W84/04

Abstract: A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).

公开(公告)号：US11251926B2

公开(公告)日：2022-02-15

申请号：US16902243

申请日：2020-06-15

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Joseph Paul Odenwalder ,  Stein Arne Lundby ,  Yongbin Wei

IPC: H04L5/00 ,  H04L1/00 ,  H04J11/00 ,  H04J13/00 ,  H04J13/12 ,  H04B1/707 ,  H04L1/16

Abstract: Multiple full channel quality indication (CQI) reports indicative of received signal quality for multiple carriers in wireless communication are transmitted in multiple time intervals of a CQI channel.

公开(公告)号：US11178650B2

公开(公告)日：2021-11-16

申请号：US16698521

申请日：2019-11-27

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Wanshi Chen ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04W72/12 ,  H04L1/16

Abstract: Certain aspects of the present disclosure provide techniques that may be used to help enable low latency communications between a user equipment (UE) and a base station (BS) using quick uplink channels that enable a reduced transmission time interval (TTI). Additionally, certain aspects of the present disclosure provide techniques for managing communications in a wireless communication system, for example, by using enhanced downlink control channels.

公开(公告)号：US11172504B2

公开(公告)日：2021-11-09

申请号：US16562687

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei ,  Tamer Kadous

IPC: H04J1/16 ,  H04W74/00 ,  H04L5/00 ,  H04W16/14 ,  H04W72/04

Abstract: Coordination of listen before talk (LBT) structure in new radio (NR) unlicensed (NR-U) multi-channel access operations is disclosed. In one aspect, when a base station determines to access shared communication spectrum, it may transmit an LBT structure signal that identifies the current LBT structure. The base station would then attempt access to the shared spectrum according to the LBT structure. In another aspect, a coordination server is used to manage access to the shared spectrum. Each node desiring access registers with the coordination server, which provides access parameters for the accessing node to use that increases the likelihood of successful access. The accessing nodes will transmit the selected access configuration used to access the shared spectrum, wherein the access configuration is selected based on the access parameters.

公开(公告)号：US11153820B2

公开(公告)日：2021-10-19

申请号：US16344448

申请日：2018-01-03

Applicant: Qualcomm Incorporated

Inventor： Sumeeth Nagaraja ,  Tao Luo ,  Aleksandar Damnjanovic ,  Karl Georg Hampel ,  Keiichi Kubota ,  Andrei Radulescu ,  Haitong Sun ,  Ozcan Ozturk ,  Peng Cheng ,  Linhai He

IPC: H04W52/02 ,  H04W72/04 ,  H04W74/00 ,  H04W72/12 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A method for wireless communication at a user equipment (UE) includes receiving, by the UE, a first transmission on a beam over a radio frequency spectrum during a first time interval. The first transmission includes an indication of a subsequent physical downlink control channel (PDCCH) transmission on the beam. The indication includes information about a PDCCH in a second time interval subsequent to the first time interval. The method also includes configuring a power saving state of the UE based at least in part on the indication. A method for wireless communication at a network access device includes transmitting the first transmission to at least one UE, and transmitting the PDCCH during the second time interval.

公开(公告)号：US11140720B2

公开(公告)日：2021-10-05

申请号：US16661609

申请日：2019-10-23

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Xiaoxia Zhang ,  Jing Sun ,  Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Ozcan Ozturk

IPC: H04W72/00 ,  H04W74/08 ,  H04W74/00 ,  H04W56/00 ,  H04W76/11 ,  H04L1/18 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. The method includes identifying that the user equipment (UE) is to use a two-step random access channel (RACH) procedure that includes a first message (e.g., uplink request message) and a second message (e.g., downlink response). The methods include sending, as a first message of the two-step RACH procedure, the uplink request message to a base station, receiving, from the base station, a physical downlink control channel comprising an indication of resources of a broadcast or multicast physical downlink shared channel on which the downlink response is to be received, and receiving the downlink response from the base station on the broadcast or multicast physical downlink shared channel. The physical downlink shared channel may be configured to provide downlink responses for one or multiple UEs.

公开(公告)号：US11115939B2

公开(公告)日：2021-09-07

申请号：US16500749

申请日：2017-05-12

Applicant: QUALCOMM Incorporated

Inventor： Peng Cheng ,  Keiichi Kubota ,  Gavin Bernard Horn ,  Aleksandar Damnjanovic ,  Tao Luo ,  Linhai He

IPC: H04W52/36 ,  H04W24/10 ,  H04W52/14 ,  H04W52/34 ,  H04W52/42

Abstract: New radio (NR) power headroom report (PHR) design for millimeter wave (mmWave) deployment is discussed. The power control process for mmWave may include beam-specific periodic PHR reporting and user equipment (UE)-specific event-trigger PHR reporting. The periodic PHR reporting may either provide a single PHR that includes power headroom information for each of the serving beams, or the UE may be configured to measure and report PHR for different beams in different slots. When reporting a single PHR with power headroom information for multiple serving beams, a beam index may be included in the reserved bits of the PHR. For the event-trigger PHR, the PHR reported based on a detected event trigger may provide power headroom information only for the current serving beam, or for all serving beams.

公开(公告)号：US11115161B2

公开(公告)日：2021-09-07

申请号：US16400822

申请日：2019-05-01

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/12 ,  H04W72/04 ,  H04W88/10 ,  H04W74/08 ,  H04L27/00 ,  H04W84/12

Abstract: Scheduling around frame based equipment (FBE) idle periods reduces the flexibility of scheduling and partitioning. This leads to a latency caused by waiting for the next downlink scheduling opportunity and skipping over unused uplink scheduling slots. According to certain aspects, to reduce overhead caused by idle time and ensure full downlink scheduling, a base station (BS) alternates between idle periods and channel occupancy time every fixed frame period with one or more other synchronized BSs, between components carriers of the BS, or both. Thus, a BS can always schedule downlink on a carrier during an idle period scheduled for a different BS and/or a different carrier.

公开(公告)号：US20210259016A1

公开(公告)日：2021-08-19

申请号：US17248179

申请日：2021-01-12

Applicant: QUALCOMM INCORPORATED

Inventor： Aleksandar Damnjanovic ,  Tao Luo ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Xiaoxia Zhang ,  Jing Sun

IPC: H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W24/10 ,  H04W72/12

Abstract: Wireless communications systems and methods related to medium access in a shared radio frequency band with long-term sensing for exception to medium access restriction are provided. A wireless communication device performs channel measurements in a shared radio frequency band during a plurality of measurement occasions spaced apart in time, the performing the channel measurements being based on a plurality of spatial directions. The wireless communication device determines whether the channel measurements satisfy a criterion for accessing the shared radio frequency band without a medium access restriction. The wireless communication device transmits, in a first spatial direction, a first communication signal in the shared radio frequency band without the medium access restriction in response to determining that the channel measurements satisfy the criterion, the plurality of spatial directions including the first spatial direction.

公开(公告)号：US11089518B2

公开(公告)日：2021-08-10

申请号：US16534781

申请日：2019-08-07

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Yongbin Wei ,  Tamer Kadous

IPC: H04L12/28 ,  H04W28/26 ,  H04W74/08 ,  H04L27/26 ,  H04L27/00 ,  H04W16/14 ,  H04J1/16

Abstract: Methods, systems, and devices for wireless communications are described. The method includes receiving a transmission from a first wireless device at a second wireless device, the transmission including a first coexistence preamble configured to reserve a channel of a shared radio frequency band for a first period of time, a first segment, and a second segment, where the first coexistence preamble comprises an initial channel reservation sequence and a data field indicating information about the first period of time; and transmitting, during a gap period between the first segment and the second segment, a receiver protection signal from the second wireless device, the receiver protection signal including a second coexistence preamble configured to reserve the channel of the shared radio frequency band for a second period of time associated with the second transmission segment.