公开(公告)号：US20200037336A1

公开(公告)日：2020-01-30

申请号：US16518843

申请日：2019-07-22

Applicant: QUALCOMM Incorporated

Inventor： Jing SUN ,  Xiaoxia ZHANG ,  Yisheng XUE ,  Tamer KADOUS ,  Aleksandar DAMNJANOVIC ,  Arumugam CHENDAMARAI KANNAN ,  Yongbin WEI

IPC: H04W72/10 ,  H04W72/04 ,  H04W72/12

Abstract: Aspects directed towards a frame-based equipment (FBE) design for a multi-operator New Radio shared spectrum (NR-SS) are disclosed. In one example, at least one contention slot is monitored within a fixed frame period of an unlicensed spectrum, and a determination is performed of whether a channel reservation signal associated with a higher priority node has been detected within the at least one contention slot. For this example, the at least one contention slot is associated with a resource of a subsequent fixed frame period of the unlicensed spectrum. A determination is then made of whether to transmit communication via the resource. Here, the communication is transmitted via the resource, if the channel reservation signal is not detected, and the communication is not transmitted via the resource, if the channel reservation signal is detected.

公开(公告)号：US20200021422A1

公开(公告)日：2020-01-16

申请号：US16563263

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Shimman Arvind PATEL ,  Juan MONTOJO ,  Hao XU ,  Aleksandar DAMNJANOVIC

IPC: H04L5/14 ,  H04W72/04 ,  H04L27/26 ,  H04L5/00 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify an uplink/downlink (UL/DL) configuration that defines subframe configuration options for each subframe of a frame. For example, the UL/DL configuration may establish parameters for time division duplexing (TDD) operation between a base station and a user equipment (UE). The wireless device (e.g., the UE or base station) may determine a constraint for a subframe of the frame based on the UL/DL configuration and then determine an adaptive subframe configuration based on the constraint. The adaptive subframe configuration may include one or several downlink symbol periods and one or several uplink symbol periods. The wireless device may then communicate during the subframe according to the adaptive subframe configuration rather than the original UL/DL configuration; and, because the adaptive subframe may be constrained by the identified UL/DL configuration, the communication during the subframe may avoid disruption to UEs.

公开(公告)号：US20190159242A1

公开(公告)日：2019-05-23

申请号：US16256779

申请日：2019-01-24

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan VAJAPEYAM ,  Aleksandar DAMNJANOVIC ,  Tao LUO ,  Wanshi CHEN ,  Peter GAAL

IPC: H04W72/14 ,  H04W74/00 ,  H04W72/12 ,  H04L1/18 ,  H04W74/04

Abstract: Techniques for uplink transmission management in a wireless communications system are described herein. An example method may include receiving an explicit uplink grant that indicates one or more implicit uplink grants. In an aspect, the example method may include performing a first clear channel assessment (CCA) in response to the explicit uplink grant in a first time slot. In another aspect, the example method may include, if the first CCA fails, sequentially performing one or more additional CCAs respectively in one or more time slots subsequent to the first time slot in response to the one or more implicit uplink grants, and transmitting the PDU over the unlicensed or shared spectrum and in a time slot subsequent to the time slot in which one of the one or more additional CCAs succeeds.

公开(公告)号：US20190149278A1

公开(公告)日：2019-05-16

申请号：US16244718

申请日：2019-01-10

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Peter GAAL ,  Tao LUO ,  Aleksandar DAMNJANOVIC ,  Yongbin WEI ,  Durga Prasad MALLADI ,  Hao XU ,  Srinivas YERRAMALLI

IPC: H04L1/18 ,  H04W72/14

Abstract: Systems and methods for uplink transmission scheduling are disclosed. A wireless device may monitor at least two downlink sub-frames for scheduling grants. The wireless device may receive a first uplink scheduling grant in one of the at least two downlink sub-frames for at least a first uplink sub-frame and receive a second uplink scheduling grant in another of the at least two downlink sub-frames for at least the first uplink sub-frame. The wireless device may perform an uplink transmission in the first uplink sub-frame based on one or both of the first uplink scheduling grant and the second uplink scheduling grant. For the uplink transmission, the wireless device may select a most recent uplink scheduling grant or select an uplink scheduling grant received in a downlink sub-frame at least a minimum number of sub-frames before the first uplink sub-frame.

公开(公告)号：US20180316454A1

公开(公告)日：2018-11-01

申请号：US15942088

申请日：2018-03-30

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar DAMNJANOVIC ,  Tao LUO ,  Andrei RADULESCU ,  Srinivas YERRAMALLI ,  Rahul MALIK

IPC: H04J11/00 ,  H04W48/10 ,  H04L5/00

Abstract: Various aspects described herein relate to techniques for synchronization signal transmissions in wireless communications (e.g., 5th Generation New Radio). In an aspect, a method includes detecting that a medium in a shared spectrum is busy, and delaying a transmission of a synchronization signal (SS) block in the shared spectrum in response to detecting that the medium is busy. The method further includes detecting that the previously busy medium is free, and transmitting, in response to detecting that the medium is free, a filler signal before transmitting the SS block in the shared spectrum, and the SS block includes one or more discovery reference signals (DRSs).

公开(公告)号：US20180279150A1

公开(公告)日：2018-09-27

申请号：US15923669

申请日：2018-03-16

Applicant: QUALCOMM Incorporated

Inventor： Linhai HE ,  Aleksandar DAMNJANOVIC ,  Gavin Bernard HORN ,  Aziz GHOLMIEH ,  Yue YANG ,  Tao LUO ,  Sumeeth NAGARAJA

IPC: H04W24/10 ,  H04W72/12

Abstract: Various techniques are proposed to enhance or expand the capabilities or usage of buffer status request (BSR) and scheduling request (SR) in new radio (NR) applications. In an implementation, techniques are proposed to extend the SR in long term evolution (LTE) baseline with additional information to help a base station (e.g., gNB) schedule faster and more efficiently. Moreover, a new BSR triggering condition is proposed to report new data based on particular events instead of being time-based. Modifications being proposed to both BSR and SR can be customized for different numerologies/transmission time intervals (TTIs). Modifications being proposed to SR can also be used to indicate a user equipment (UE) new beam selection after recovering from a beam failure.

公开(公告)号：US20180176787A1

公开(公告)日：2018-06-21

申请号：US15612588

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar FAKOORIAN ,  Xiaoxia ZHANG ,  Taesang YOO ,  Aleksandar DAMNJANOVIC ,  Juan MONTOJO ,  Siddhartha MALLIK

IPC: H04W16/14 ,  H04W28/02 ,  H04W56/00 ,  H04W72/12 ,  H04W40/24 ,  H04W72/04 ,  H04W88/06 ,  H04W74/08

Abstract: Wireless communications systems and methods related to autonomous uplink transmission and autonomous downlink transmission in a shared spectrum are provided. A first wireless communication device identifies a transmission opportunity (TXOP) in a shared spectrum shared by a plurality of network operating entities. The first wireless communication device is associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device a first frequency band of the shared spectrum designated for autonomous communication by the first network operating entity during the TXOP. The first wireless communication device communicates, with a second wireless communication device associated with the first network operating entity in the first frequency band, autonomous data during the TXOP.

公开(公告)号：US20180139657A1

公开(公告)日：2018-05-17

申请号：US15804706

申请日：2017-11-06

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar DAMNJANOVIC ,  Juan MONTOJO ,  Yisheng XUE ,  Ahmed SADEK

IPC: H04W28/26 ,  H04W72/04 ,  H04W28/02 ,  H04L1/00 ,  H04L12/911

CPC classification number: H04W28/26 ,  H04L1/0079 ,  H04L47/72 ,  H04W28/02 ,  H04W28/0247 ,  H04W72/04 ,  H04W74/0891

Abstract: The present disclosure provides for fast radio resource management procedures for new radio. Generally, a fixed frame structure is utilized and all base stations are synchronized. A base station may transmit a reservation request during a first control slot for the base station in a reservation channel at a beginning of a synchronized frame. A first user equipment may transmit and the base station may receive a reservation response during a second control slot. The base station may receive, from the first UE, after a third control slot of the reservation channel for a neighboring base station, a reservation indication based on a measurement by the first UE of the neighboring base station or at least one other UE associated with the neighboring base station. The base station may determine, based on the resource indication, whether to schedule the first UE during a data channel of the synchronized frame.

公开(公告)号：US20170295002A1

公开(公告)日：2017-10-12

申请号：US15633621

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Wanshi CHEN ,  Peter GAAL ,  Aleksandar DAMNJANOVIC ,  Michael Mao WANG

IPC: H04L5/00 ,  H04W56/00 ,  H04W8/00 ,  H04W72/04

CPC classification number: H04W8/005 ,  H04L5/0048 ,  H04L5/0073 ,  H04W56/001 ,  H04W56/0015 ,  H04W72/0446 ,  H04W72/082

Abstract: Base stations (such as small cells) may support active and dormant states. To facilitate state transitions, these cells may transmit discovery signals. The transmission design of both discovery signals and network synchronization signals from small cells should provide for regular periodicity, while supporting the benefit of transitioning between active and dormant states. Disclosed is a method, a computer program product, and an apparatus that determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, where both the first reference signal and the second reference signal are based on a same type of reference signal.

公开(公告)号：US20170273108A1

公开(公告)日：2017-09-21

申请号：US15461181

申请日：2017-03-16

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar DAMNJANOVIC ,  Qingsi WANG ,  Vikas JAIN

IPC: H04W74/08 ,  H04L27/26 ,  H04W64/00 ,  H04W28/02

CPC classification number: H04W74/085 ,  H04L27/2602 ,  H04W28/0278 ,  H04W64/00 ,  H04W74/0833

Abstract: The disclosure provides a method and system for requesting access to resources for uplink communications in unlicensed spectrum. In particular, a user equipment (UE) may detect one or more of a first type of data or a second type of data to be transmitted to a base station (BS). The UE may then determine if a first type of physical random access channel (PRACH) resource is available for transmitting one or more of the first type of data or the second type of data to the BS. If the first type of PRACH resource is available, then the UE may transmit one or more of the first type of data or the second type of data using the first type of PRACH resource. If the first type of PRACH resource is not available, then the UE may transmit the second type of data using a second type of PRACH resource.