公开(公告)号：US11184777B2

公开(公告)日：2021-11-23

申请号：US16513283

申请日：2019-07-16

Applicant: QUALCOMM Incorporated

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

IPC: H04W16/14 ,  H04W72/14 ,  H04W72/10 ,  H04W24/08 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communications are described. A base station of a first network operator (OP) may determine a priority for the first OP for a transmission opportunity of a shared or unlicensed channel. The priority may be lower than a priority of a second OP for the transmission opportunity. Base station may transmit a tentative grant to a user equipment (UE) of the first OP scheduling transmissions over resources of the transmission opportunity. The transmitting device of the first OP may monitor a contention window for reservation signals communicated by devices of the second OP. Based on the monitoring and the tentative grant, the transmitting device of the first OP may perform the transmission over the resources of the shared or unlicensed channel.

公开(公告)号：US20210352719A1

公开(公告)日：2021-11-11

申请号：US17380702

申请日：2021-07-20

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Siddhartha Mallik ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04B7/06 ,  H04B7/0413 ,  H04W16/14 ,  H04W72/04 ,  H04L5/00

Abstract: Improvements to asynchronous spatial listen before talk (LBT) procedures are disclosed. In a shared spectrum network spatial LBT procedures are used for directionally targeting the channel reservation process. Prior to transmitting channel reservation signaling, the transmitter and receiver determine an effective interference considering available multiple input, multiple output (MIMO) configuration information. When the effective interference exceeds a predefined threshold, the node may without transmission of its channel reservation signal. Otherwise, when the effective interference remains within the threshold, each node's transmitted channel reservation signal may also identify at least a beamforming matrix either as payload or used to precode the node's channel reservation signal.

公开(公告)号：US20210298074A1

公开(公告)日：2021-09-23

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：US11115170B2

公开(公告)日：2021-09-07

申请号：US16266878

申请日：2019-02-04

Applicant: QUALCOMM incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Ravi Teja Sukhavasi ,  Xiaoxia Zhang

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04W4/06 ,  H04W74/08 ,  H04W76/28 ,  H04L1/16

Abstract: Techniques and devices are described for wireless communication. A base station may determine a parameter associated with a transmission such as hybrid automatic repeat request (HARQ) feedback, a signal-to-noise ratio, or a determination regarding whether the transmission was successfully decoded. The base station may then determine a contention window adjustment value based on the parameter. The base station may then apply weighting factor (e.g., based on the time of the transmission, a number of devices being served, aspects of the transmission parameter, etc.) to the contention window adjustment value may adjust a contention window size for a second transmission based on the weighted contention window adjustment value (and, in some cases, other weighted adjustments based on other transmissions). The base station may then perform a clear channel assessment (CCA) based on the contention window size.

公开(公告)号：US11089575B2

公开(公告)日：2021-08-10

申请号：US16380778

申请日：2019-04-10

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Xiaoxia Zhang ,  Tamer Kadous ,  Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Andrei Dragos Radulescu

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

Abstract: In various aspects, a base station and user equipment (UE) exchange an indication of UE capabilities and a monitoring schedule for the UE to monitor an integer M frequency band partitions for a predetermined signal. The base station performs one or more successful clear carrier assessments (CCAs) on an integer N frequency band partitions of the M frequency band partitions, wherein N

公开(公告)号：US11088798B2

公开(公告)日：2021-08-10

申请号：US16544592

申请日：2019-08-19

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/00 ,  H04L5/00 ,  H04W76/27 ,  H04L1/18 ,  H04L27/26 ,  H04W72/14 ,  H04L25/02

Abstract: Various aspects described herein relate to communicating in a wireless network. A resource grant comprising an indicator of whether to transmit a demodulation reference signal (RS) for an uplink control channel or an uplink data channel can be received from a network entity. It can be determined whether to transmit the RS in at least one transmission time interval (TTI) based at least in part on the indicator.

公开(公告)号：US11026097B2

公开(公告)日：2021-06-01

申请号：US16529691

申请日：2019-08-01

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Siddhartha Mallik ,  Tamer Kadous

IPC: H04W4/00 ,  H04W16/14 ,  H04W74/04 ,  H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a device may select a plurality of channel access intervals during which the device is associated with a priority condition relative to another device for communications by the device, wherein each of the plurality of channel access intervals includes a respective contention interval and a respective transmission opportunity; and may transmit, during a contention interval of a first channel access interval of the plurality of channel access intervals, a signal that includes: channel occupancy information for the device for a first transmission opportunity of the first channel access interval, and information that identifies at least a portion of one or more subsequent channel access intervals, of the plurality of channel access intervals, associated with the device. Numerous other aspects are provided.

公开(公告)号：US10939454B2

公开(公告)日：2021-03-02

申请号：US14930017

申请日：2015-11-02

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Peter Gaal ,  Hao Xu ,  Yongbin Wei ,  Madhavan Srinivasan Vajapeyam ,  Aleksandar Damnjanovic

IPC: H04W72/10 ,  H04W72/12 ,  H04L1/00 ,  H04L5/00 ,  H04W72/00 ,  H04W72/04 ,  H04W16/14 ,  H04W88/06

Abstract: Various aspects described herein relate to receiving a first communication over a first set of resources based on a first transmission time interval (TTI), receiving a second communication over a second set of resources based on a second TTI, where the second TTI is smaller than the first TTI, and where the second set of resources overlap the first set of resources defining a common set of resources, and determining whether to prioritize decoding of the first communication over the second communication.

公开(公告)号：US10939440B2

公开(公告)日：2021-03-02

申请号：US16696766

申请日：2019-11-26

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Juan Montojo ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Michael Mingxi Fan

IPC: H04W72/04 ,  H04W74/08 ,  H04L5/00 ,  H04W28/26 ,  H04W72/10 ,  H04W16/14 ,  H04L29/06

Abstract: Techniques are described for wireless communication at a wireless device. One method includes identifying a priority of the wireless device for a transmission interval of a radio frequency spectrum band shared by a plurality of network operating entities; identifying an absence of a predetermined transmission type in each of a number of clear channel assessment (CCA) slots of the transmission interval, in which each of the number of CCA slots is associated with a higher priority than the identified priority of the wireless device; and communicating over the radio frequency spectrum band based at least in part on the identified absence of the predetermined transmission type in each of the number of CCA slots associated with the higher priority than the priority of the wireless device.

公开(公告)号：US10856300B2

公开(公告)日：2020-12-01

申请号：US16121162

申请日：2018-09-04

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Weiliang Zeng ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Tamer Kadous

IPC: H04W72/06 ,  H04W72/04 ,  H04W72/08 ,  H04W72/12 ,  H04L5/00 ,  H04L1/00 ,  H04B7/0417 ,  H04W74/08

Abstract: A per-transmit time interval (TTI) rank control within a transmission opportunity (TxOP) is described for downlink coordinated multiple point (CoMP) operations. In operation, a base station may determine rank and data rate for communication during a transmission opportunity (TxOP) at the beginning of the TxOP. Each TxOP may include a plurality of transmission time intervals (TTIs). For each TTI of the TxOP, the base station computes one or more channel quality indicator (CQI) back-offs using one or more outer loop adaptation processes per TTI, and updates rank and the data rate using the CQI back-offs. Once updated, the base station transmits the downlink data during each TTI according to the updated rank and the data rate.