公开(公告)号：US11641672B2

公开(公告)日：2023-05-02

申请号：US17325816

申请日：2021-05-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/00

Abstract: Adaptive energy detection (ED) threshold medium access is discussed based on deployment and traffic type. The network nodes sharing a shared communication network are configured with multiple discrete ED thresholds or a range of ED values. As a transmitting node prepares to attempt access to the shared communication spectrum, it identifies an access trigger condition within the network. Such a condition may include traffic type, deployment, or access conditions. In response to detecting an access trigger condition, the transmitting node may select an ED threshold associated with the access trigger condition. Alternatively, upon detection of the access trigger condition, the transmitting node may implement a random ED threshold from the candidate range of ED threshold values.

公开(公告)号：US11611916B2

公开(公告)日：2023-03-21

申请号：US17112931

申请日：2020-12-04

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Tao Luo ,  Aleksandar Damnjanovic ,  Junyi Li ,  Juan Montojo ,  Ozcan Ozturk

IPC: H04W36/00 ,  H04W36/08

Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques provide for using layer one (L1) or layer two (L2) signaling to indicate a primary cell (PCell) or primary secondary cell (PSCell) to a user equipment (UE). The use of L1 or L2 signaling to indicate a PCell or PSCell may be referred to as L1 or L2 mobility and may lower the latency at the UE associated with transitioning to communicating with the PCell or PSCell. A UE may receive radio resource control (RRC) signaling from a base station indicating a set of cells configured for L1 or L2 mobility and indicating a list of candidate cells for a PCell or PSCell. The UE may then receive L1/L2 signaling from the base station identifying the PCell or indicating activation of the PSCell.

公开(公告)号：US11570811B2

公开(公告)日：2023-01-31

申请号：US16995644

申请日：2020-08-17

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Yongbin Wei

IPC: H04W74/08 ,  H04W74/00 ,  H04W24/08 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A base station may identify a listen-before-talk (LBT) procedure to use for transmitting a downlink signal to a user equipment (UE) on a shared radio frequency spectrum band. The LBT procedure may be a group LBT procedure associated with a first set of contention window durations or an individual listen-before talk procedure associated with a second set of contention window durations. The base station may determine a contention window duration corresponding to the identified LBT procedure, perform the identified LBT procedure using the determined contention window duration, and transmit the downlink signal to the UE based on the performed LBT procedure.

公开(公告)号：US11540306B2

公开(公告)日：2022-12-27

申请号：US17150846

申请日：2021-01-15

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04W72/04 ,  H04W74/02

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device (WCD) may communicate, during a channel occupancy time (COT) associated with one or more resources, via a no listen before talk (no-LBT) channel access mode. The WCD may initiate, after the COT, a reduced COT associated with the one or more resources, wherein the WCD is configured to reduce channel occupancy during the reduced COT. Numerous other aspects are described.

公开(公告)号：US11533753B2

公开(公告)日：2022-12-20

申请号：US17249732

申请日：2021-03-10

Applicant: QUALCOMM INCORPORATED

Inventor： Sungwoo Park ,  Arumugam Chendamarai Kannan ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Jing Sun ,  Vinay Chande ,  Tao Luo ,  Aleksandar Damnjanovic ,  Giovanni Chisci

IPC: H04W74/08 ,  H04B17/336

Abstract: Wireless communications systems and methods related to communications in a network are provided. A first wireless communication device may communicate to a second wireless communication device, a modification to a time parameter associated with at least one of a minimum idle period (MIP) of a frame period or a maximum channel occupancy time (MCOT) of the frame period. Additionally, the first wireless communication device may communicate with the second wireless communication device, a communication signal during the frame period based on the modification to the time parameter.

公开(公告)号：US20220385351A1

公开(公告)日：2022-12-01

申请号：US17331409

申请日：2021-05-26

Applicant: QUALCOMM Incorporated

Inventor： Shanyu Zhou ,  Jelena Damnjanovic ,  Tao Luo ,  Aleksandar Damnjanovic ,  Ozcan Ozturk

IPC: H04B7/08 ,  H04W76/15 ,  H04L1/20 ,  H04W24/10 ,  H04B17/336

Abstract: Methods, systems, and devices for wireless communications are described that provide for interference-aware beam failure detection procedures. One or more beam failure parameters may be adjusted based on a likelihood of temporary interference being present for a communications beam. The beam failure parameters may include beam failure indication (BFI) counts or count thresholds that may be adjusted based on a likelihood of BFIs being the result of temporary interference. Additionally or alternatively, one or more measurement thresholds that trigger a BFI may be adjusted based on a likelihood of a presence of temporary interference.

公开(公告)号：US20220346172A1

公开(公告)日：2022-10-27

申请号：US17241005

申请日：2021-04-26

Applicant: QUALCOMM Incorporated

Inventor： Shanyu Zhou ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Junyi Li ,  Juan Montojo ,  Tao Luo ,  Olufunmilola Omolade Awoniyi-Oteri ,  Sony Akkarakaran ,  Yan Zhou

IPC: H04W76/18 ,  H04W24/08 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a user equipment (UE) may receive, from a base station, a configuration indicating a channel quality threshold that the UE may use to identify an interference-based beam failure indicator type. The UE may receive a reference signal for performing one or more signal measurements in accordance with the configuration. Based on the one or more signal measurements and the channel quality threshold, the UE may report an indication of the type of beam failure indicator to the base station.

公开(公告)号：US11431459B2

公开(公告)日：2022-08-30

申请号：US14456880

申请日：2014-08-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Naga Bhushan ,  Wanshi Chen ,  Durga Prasad Malladi ,  Tingfang Ji ,  Tao Luo ,  Yongbin Wei ,  Peter Gaal

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08 ,  H04L1/16

Abstract: Methods, systems, devices, and apparatuses are described for wireless communications. In one method, a set of one or more data subframes of a data frame may be transmitted over an unlicensed spectrum, to a user equipment (UE), during a transmission period. A group hybrid automatic repeat request (HARQ) feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be received over the unlicensed spectrum, from the UE, during the transmission period. In another method, a set of one or more data subframes of a data frame may be received over an unlicensed spectrum during a transmission period. A group HARQ feedback message for a plurality of data subframes including at least one of the data subframes in the set of one or more data subframes may then be transmitted over the unlicensed spectrum during the transmission period.

公开(公告)号：US20220264640A1

公开(公告)日：2022-08-18

申请号：US17658524

申请日：2022-04-08

Applicant: QUALCOMM Incorporated

Inventor： JING SUN ,  Xiaoxia Zhang ,  Taesang Yoo ,  Tamer Kadous ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W72/14

Abstract: New radio (NR) transmission opportunity (TxOP) structure having flexible starting points are disclosed for wireless communications. When a typical listen before talk (LBT) procedure is performed, the transmitting node will not know ahead of time when the LBT will pass and, thus, when data transmissions can start. NR systems may include a mini-slot design for accommodating transmission units smaller than a slot. Aspects of the present disclosure provide for flexibly increasing the number of potential starting transmission boundaries depending on when the LBT pass is detected. Alternative aspects of the present disclosure determine the potential starting transmission points using a mini-slot based design, a floating slot based design, or a punctured slot based design with a code block group (CBG) level retransmission mechanism.

公开(公告)号：US11388728B2

公开(公告)日：2022-07-12

申请号：US16190927

申请日：2018-11-14

Applicant: QUALCOMM incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Weiliang Zeng ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/08 ,  H04L5/00 ,  H04W74/08 ,  H04W16/14

Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may identify a contention window for a no-energy-detection protocol for determining a channel availability for a data transmission. After the contention window expires, the transmitter may send a request message to a receiver. The receiver may measure a quality of the request message against a request threshold and transmit a response message if the measured quality exceeds the request threshold. The transmitter may then measure a quality of the response message against a response threshold. If the measured quality exceeds the response threshold, the transmitter may initiate a data transmission with the receiver. If the quality falls below the response threshold or the response message is not received, the transmitter may adjust the contention window and reattempt the no-energy-detection protocol. The contention window may also be adjusted based on an acknowledgement message received after the data transmission.