公开(公告)号：US11064396B2

公开(公告)日：2021-07-13

申请号：US16125258

申请日：2018-09-07

Applicant: QUALCOMM Incorporated

Inventor： Zhifei Fan ,  Xiaoxia Zhang ,  Jing Sun ,  Aleksandar Damnjanovic

IPC: H04W28/26 ,  H04W74/08 ,  H04W72/04 ,  H04W16/14

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for transmitting channel reservation signals. In one example, a device used a gating interval to gain access to a channel of a shared spectrum, performs a clear channel assessment to determine if the channel is available, selects a channel reservation signal from among a plurality of predetermined channel reservation signals if the channel is clear, and transmits the channel reservation signal upon the channel being clear. The channel reservation signal comprises a preamble, and a message, wherein the CR preamble and the CR message use a common numerology understood by at least one of different radio access technologies, and different numerologies in the same radio access technology, and the radio access technologies comprise WIFI and NR-SS.

公开(公告)号：US11050531B2

公开(公告)日：2021-06-29

申请号：US16394518

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W16/14 ,  H04W74/08 ,  H04W74/00 ,  H04W72/14 ,  H04W48/08

Abstract: Wireless communications systems and methods related to providing frequency diversity for communications in an unlicensed spectrum are provided. A first wireless communication device communicates, with a second wireless communication device, an opportunistic frequency-switching configuration for a first frequency band and a second frequency band. The first frequency band and the second frequency band are shared by a first network operating entity and a second network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device switches from the first frequency band to a second frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device communicates, with the second wireless communication device after the switching, a second communication signal in the second frequency band based on the opportunistic frequency-switching configuration.

公开(公告)号：US20210119748A1

公开(公告)日：2021-04-22

申请号：US17071635

申请日：2020-10-15

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Seyed Ali Akbar Fakoorian

IPC: H04L5/00 ,  H04W72/08 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station serving the UE in a first network, a power control configuration and a reference signal measurement configuration. The UE may receive, based at least in part on the reference signal measurement configuration, a reference signal from at least one wireless device of a second network. The UE may determine, based at least in part on the power control configuration and the received reference signal, an interference level for the second network introduced by the first network. The UE may adjust a transmission power limit for the UE based at least in part on the determined interference level and the power control configuration. The UE may transmit signals to the base station according to the adjusted transmission power limit.

公开(公告)号：US10971022B2

公开(公告)日：2021-04-06

申请号：US16049772

申请日：2018-07-30

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Juan Montojo ,  Yongbin Wei ,  Peter Gaal ,  Alberto Rico Alvarino ,  Edward Teague

IPC: H04W8/24 ,  B64C39/02 ,  G08G5/00 ,  G01S5/10 ,  G01S5/14 ,  H04B7/185 ,  G01S19/48 ,  H04W60/00 ,  G01S11/02 ,  H04W76/10 ,  G01S5/02 ,  G05D1/00 ,  H04W8/22 ,  H04W64/00

Abstract: The disclosure relates to drone user equipment (UE) indications that may be conveyed to a wireless network. In particular, a UE that has flight capabilities (i.e., capabilities to operate as an unmanned aircraft system) and optional further capabilities to report a current height level may indicate such capabilities to the wireless network. As such, the wireless network may differentiate the drone UE from other UEs that only operate on the ground. Furthermore, the optional current height level may enable the wireless network to differentiate among drone UEs operating at different heights and/or from other UEs that are operating on the ground. The wireless network may further use the information indicating the flight capabilities either alone or in combination with the optional height information to configure power control parameters, manage interference, provide mobility management functions, generate neighbor lists, control beamforming, or implement a radio resource configuration or management procedure.

公开(公告)号：US10966242B2

公开(公告)日：2021-03-30

申请号：US16390495

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Shimman Arvind Patel ,  Wanshi Chen ,  Naga Bhushan ,  Yongbin Wei ,  Hao Xu ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Durga Prasad Malladi ,  Srinivas Yerramalli ,  Peter Gaal

IPC: H04W74/00 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08 ,  H04L5/14 ,  H04L27/26

Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.

公开(公告)号：US20210084684A1

公开(公告)日：2021-03-18

申请号：US17017245

申请日：2020-09-10

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue

IPC: H04W74/08 ,  H04W56/00

Abstract: Synchronization of listen before talk (LBT) back-off for synchronous access in unlicensed spectrum is disclosed. For nodes of a coordinated group of nodes, when one or more such nodes detects a failed LBT attempt, it pauses the contention widow countdown at the current counter value. According to such aspects, a procedure may be provided that specifies when such nodes can restart the contention window countdown using the current counter value or when the nodes can redraw the pseudo-random number for the contention window countdown in order to synchronize the contention window counters.

公开(公告)号：US20210068105A1

公开(公告)日：2021-03-04

申请号：US16943518

申请日：2020-07-30

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Vinay Joseph ,  Seyedkianoush Hosseini ,  Wei Yang ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04W72/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify an overlap in time between at least a first occasion and a second occasion in a slot. In some cases, the first occasion may be semi-persistently scheduled for the UE according to a first configuration associated with a first priority level, and the second occasion may be semi-persistently scheduled for the UE according to a second configuration associated with a second priority level. The UE may apply, based on the identified overlap, a conflict resolution rule to the first occasion and the second occasion based on the first priority level for the first occasion and the second priority level for the second occasion, communicate in the slot using the first occasion, and refrain from communicating in the slot using the second occasion based on applying the conflict resolution rule.

公开(公告)号：US10925091B2

公开(公告)日：2021-02-16

申请号：US16056128

申请日：2018-08-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Jing Sun

IPC: H04L12/28 ,  H04W74/08 ,  H04W56/00 ,  H04B7/06 ,  H04L5/00 ,  H04W16/14 ,  H04W48/16 ,  H04W72/04 ,  H04W16/28 ,  H04B7/0408

Abstract: Wireless communications systems and methods related to performing listen-before-talk (LBT) with discovery signal transmissions for spectrum sharing are provided. A wireless communication device senses a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the wireless communication device is associated with a first network operating entity, and wherein the channel is shared by a plurality of network operating entities including the first network operating entity. The wireless communication device transmits a plurality of discovery signals in one or more of the plurality of expected beam transmission directions during a discovery period to facilitate synchronization in the channel based on the sensing.

公开(公告)号：US10925090B2

公开(公告)日：2021-02-16

申请号：US16140431

申请日：2018-09-24

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Ahmed Kamel Sadek ,  Aleksandar Damnjanovic ,  Sanaz Barghi ,  Tamer Kadous

IPC: H04W74/08 ,  H04B7/06 ,  H04B17/345 ,  H04W16/14 ,  H04W24/10 ,  H04W72/04 ,  H04W72/08 ,  H04B7/0413 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may determine an interference status of each beam configuration of a plurality of active beam configurations for a shared radio frequency spectrum band. The wireless device may determine a beam-specific listen-before-talk (LBT) requirement for each beam configuration of the plurality of active beam configurations based at least in part on the determined interference status of each beam configuration. The wireless device may selectively enable an LBT procedure on a per-beam basis according to the determined beam-specific LBT requirement for each beam configuration.

公开(公告)号：US10924237B2

公开(公告)日：2021-02-16

申请号：US16419268

申请日：2019-05-22

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Peter Gaal ,  Seyedkianoush Hosseini ,  Aleksandar Damnjanovic ,  Hao Xu

IPC: H04L5/00 ,  H04B7/0413 ,  H04W72/04

Abstract: The present methods and apparatus enable transmission of an interlaced reference signal for two UEs using a comb structure. In some aspects, the present methods and apparatus may allocate resources and indicate whether a first UE and a second UE are to transmit DM-RS with a comb structure in a single slot based on the allocation. Further, in some aspects, the present methods and apparatus may allocate resources and transmit information indicating whether a first UE is to transmit DM-RS in a first slot or in both a first slot and a second slot within a subframe.