公开(公告)号：US20210219344A1

公开(公告)日：2021-07-15

申请号：US17122768

申请日：2020-12-15

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue ,  Maarten Menzo Wentink ,  George Cherian

IPC: H04W74/08 ,  H04W16/14

Abstract: A relaxed threshold for synchronous access in unlicensed spectrum is disclosed. According to the aspects described herein, nodes accessing a shared communication spectrum using a local synchronous access mode may attempt access via a listen before talk (LBT) procedure using a local synchronous energy detection (ED) threshold. The local synchronous ED threshold is relaxed relative to a standard ED threshold otherwise used for access to the shared communication spectrum. The relaxed nature of the local synchronous ED threshold allows local synchronous access nodes a higher probability to gain access to the shared communication channel. To prevent interference with global synchronous access nodes, the global synchronous access nodes are also able to use the relaxed, local synchronous ED threshold as long as it ends the resulting channel occupancy time (COT) at the next local synchronization boundary.

公开(公告)号：US11057873B2

公开(公告)日：2021-07-06

申请号：US15423232

申请日：2017-02-02

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Peter Gaal ,  Tao Luo ,  Xiaoxia Zhang ,  Juan Montojo ,  Aleksandar Damnjanovic ,  Marco Papaleo

IPC: H04W72/04 ,  H04L27/00 ,  H04L1/18 ,  H04L5/00 ,  H04W74/08 ,  H04W84/12

Abstract: Apparatus and methods for long term evolution (LTE) licensed-assisted access (LAA) communications at a user equipment (UE) are described herein. In an aspect, an example method includes a user equipment (UE) receiving a radio resource control (RRC) message from an eNB and searching for a discovery reference signal (DRS) associated with a secondary cell (Scell) of the eNB based at least on the information received in the RRC message. The example method further includes transmitting on the channel detected during the search.

公开(公告)号：US20210204232A1

公开(公告)日：2021-07-01

申请号：US17137241

申请日：2020-12-29

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Maarten Menzo Wentink ,  Yisheng Xue ,  Marco Papaleo

IPC: H04W56/00

Abstract: Indication of globally synchronous communications mode is disclosed. A first node may detect an indication signal transmitted by a second node at a synchronization boundary of a shared communication channel. The indication signal is configured to identify a first transmission synchronization mode of the second node. The first node may then adjust its communications configuration in response to the indication signal. In making such adjustments, the first node may either contend for communications on the shared communication channel using the first transmission synchronization mode or refrain from attempting the communications on the shared communication channel using a second transmission synchronization mode.

公开(公告)号：US11012984B2

公开(公告)日：2021-05-18

申请号：US16218214

申请日：2018-12-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12 ,  H04W74/00 ,  H04W16/14

Abstract: Techniques are described for wireless communication. A first method includes identifying a first interval for an uplink transmission in a shared radio frequency spectrum band; identifying a second interval for the uplink transmission; comparing the first interval with the second interval; and determining uplink resources to use for the uplink transmission based at least in part on the comparison of the first interval with the second interval. A second method includes transmitting one or more assignments of uplink resources to use for an uplink transmission in a shared radio frequency spectrum band; detecting a duration of the uplink transmission; and identifying uplink resources used for the uplink transmission based at least in part on the detecting.

公开(公告)号：US10986665B2

公开(公告)日：2021-04-20

申请号：US16046500

申请日：2018-07-26

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Xiaoxia Zhang ,  Jing Sun ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W74/08 ,  H01Q1/24 ,  H01Q21/00 ,  H04L12/26 ,  H04W72/08 ,  H04W88/08

Abstract: Quasi-colocation (QCL) for listen before talk (LBT) procedures is disclosed. A base station having a plurality of antennas may identify one or more groups of QCL antennas. Various aspects provide for different rules defining the QCL relationship, such as base on interference experienced by the antennas, a physical or logical connection of the antennas and LBT coupling, or synchronization. QCL may further be determined across multiple shared channels, such as based on frequency separation or frequency band of the channels. Once grouped as QCL, the base station performs the LBT procedure to reserve access to the one or more shared communication channels. If the LBT is successful, the base station may then transmit a channel reservation preamble on the shared communication channels in response.

公开(公告)号：US10980045B2

公开(公告)日：2021-04-13

申请号：US14858688

申请日：2015-09-18

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04W52/34 ,  H04W76/15 ,  H04W52/32 ,  H04W52/36 ,  H04W16/14 ,  H04W72/04 ,  H04W52/28 ,  H04W52/14 ,  H04W52/44 ,  H04W88/06

Abstract: Techniques are described for wireless communication. A first method includes identifying a first uplink component carrier of a plurality of component carriers configured for a user equipment (UE); determining that the first uplink component carrier is transmitted over a shared radio frequency spectrum band; and performing a power management operation on the first uplink component carrier, for a current subframe, based at least in part on the determining.

公开(公告)号：US10944533B2

公开(公告)日：2021-03-09

申请号：US16393820

申请日：2019-04-24

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: Techniques for utilizing multiple carriers to substantially improve transmission capacity are described. For multi-carrier operation, a terminal receives an assignment of multiple forward link (FL) carriers and at least one reverse link (RL) carrier. The carriers may be arranged in at least one group, with each group including at least one FL carrier and one RL carrier. The terminal may receive packets on the FL carrier(s) in each group and may send acknowledgements for the received packets via the RL carrier in that group. The terminal may send channel quality indication (CQI) reports for the FL carrier(s) in each group via the RL carrier in that group. The terminal may also transmit data on the RL carrier(s). The terminal may send designated RL signaling (e.g., to originate a call) on a primary RL carrier and may receive designated FL signaling (e.g., for call setup) on a primary FL carrier.

公开(公告)号：US10932286B2

公开(公告)日：2021-02-23

申请号：US16160854

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.

公开(公告)号：US20210051701A1

公开(公告)日：2021-02-18

申请号：US16985946

申请日：2020-08-05

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Aleksandar Damnjanovic ,  Tao Luo ,  Xiaoxia Zhang ,  Yan Zhou ,  Jing Sun

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

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, which may be otherwise known as a user equipment may receive control signaling that configures the communication device with a set of configured grant configurations. The communication device may receive, via a group control channel, group downlink control information (DCI) for a plurality of communication devices that includes the communication device. In some examples, the group control channel may be a group physical downlink control channel. The communication device may communicate a data transmission in accordance with a first configured grant configuration of the plurality of configured grant configurations based on a configuration indication in the group DCI indicating the first configured grant configuration.

公开(公告)号：US20210044982A1

公开(公告)日：2021-02-11

申请号：US16949389

申请日：2020-10-28

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Tamer Kadous ,  Yongbin Wei ,  Xiaoxia Zhang ,  Srinivas Yerramalli

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04M1/725 ,  H04W56/00 ,  H04L1/18 ,  H04W84/04

Abstract: Wireless communications systems and methods related to coordinating shared radio resources for spectrum sharing are provided. A spectrum resource control unit allocates a first resource for exclusive access by a first network operating entity in a spectrum. The exclusive access is configured for at least one of a network information communication or a feedback communication. The spectrum resource control unit allocates a second resource in the spectrum for shared access by the first network operating entity and a second network operating entity. The shared access is configured for at least a downlink control information communication. The spectrum resource control unit transmits, to the first network operating entity and the second network operating entity, a configuration indicating the first resource allocated for exclusive access by the first network operating entity and the second resource allocated for shared access by the first network operating entity and the second network operating entity.