公开(公告)号：US20210105618A1

公开(公告)日：2021-04-08

申请号：US17124948

申请日：2020-12-17

Applicant: QUALCOMM Incorporated

Inventor： Michaela Vanderveen ,  Hong Cheng ,  Junyi Li ,  Shailesh Patil

IPC: H04W12/04 ,  H04W12/10 ,  H04W12/00 ,  H04W4/40 ,  H04W76/11 ,  H04W4/06

Abstract: Methods, systems, and devices for wireless communications are described that improve privacy in wireless communications, such as communications by a user equipment (UE), which may in some cases be a vehicle UE. For example, various vehicle-to-everything (V2X) transmissions may be unencrypted, and a vehicle may be expected to periodically change one or more identifiers it uses for various communication services. Privacy may be enhanced, for example, via encryption key roll-over, as well as roll-over of one or more other identifiers associated with a UE that may potentially be used by an observer to track the UE. The UE may transmit a message that includes an updated lower layer identifier (e.g., a layer-2 (L2) identifier) to another UE in a V2X unicast communications link, which may trigger a change in identifiers of a set of identifiers and an updated security context. All or a portion of the message may be encrypted.

公开(公告)号：US10856345B2

公开(公告)日：2020-12-01

申请号：US16156646

申请日：2018-10-10

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Shailesh Patil ,  Tien Viet Nguyen ,  Sudhir Kumar Baghel

IPC: H04W76/14 ,  H04W72/04 ,  H04L5/00 ,  H04L1/18

Abstract: Wireless communication apparatus and methods related to wireless communication, for example, device-to-device feedback are described. In aspects, a method of wireless communication may include communicating a sidelink traffic communication using a sidelink communication structure, and communicating an allotting for sidelink feedback using at least one feedback symbol of the sidelink communication structure. In aspects, the method includes communicating, by a first wireless communication device, a sidelink feedback communication using at least one feedback symbol of the sidelink communication structure, wherein the sidelink feedback communication is associated with the sidelink traffic communication. Numerous other aspects are provided.

公开(公告)号：US20200328861A1

公开(公告)日：2020-10-15

申请号：US16843797

申请日：2020-04-08

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Shuanshuan Wu ,  Sudhir Kumar Baghel ,  Kapil Gulati ,  Shailesh Patil

IPC: H04L5/00 ,  H04W4/40 ,  H04W64/00

Abstract: Methods, systems, and devices for wireless communications (e.g., vehicle to everything systems) are described relating to an adaptive design of demodulation reference signals (DMRS) density based on user equipment (UE) velocity. A UE may send assistance information to a transmitting UE to help identify a DMRS pattern based on the relative speed between the two UEs. Also, the transmitter may determine the adaptive DMRS pattern based on its speed without information of the receiver's speed. The transmitter may indicate the adaptive DMRS pattern in control information to the receiver. A base station may receive assistance information, and the base station may determine the adaptive DMRS pattern to be used by the transmitting UE based on the received assistance information and then indicate the adaptive DMRS pattern to the transmitting UE. A UE may determine an adaptive DMRS pattern to use based on feedback from the receiving UE.

公开(公告)号：US20200305173A1

公开(公告)日：2020-09-24

申请号：US16821442

申请日：2020-03-17

Applicant: QUALCOMM Incorporated

Inventor： Marco Papaleo ,  Xiao Feng Wang ,  Shailesh Patil ,  Maarten Menzo Wentink ,  James Lansford ,  Jamshid Khun-Jush

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

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device that uses a first radio access technology (RAT) may identify a transmission timing scheme for a shared radio frequency spectrum band, the transmission timing scheme comprising a first set of time intervals allocated for transmissions using a first RAT and a second set of time intervals allocated for transmissions using a second RAT. The wireless device may transmit, during a time interval of the first set of time intervals, a channel reservation signal indicating an end time of the time interval and indicating that the wireless device uses the first RAT. The wireless device may transmit, based at least in part on the transmitted channel reservation signal, over the shared radio frequency spectrum band during at least a portion of the time interval before the end time of the time interval.

公开(公告)号：US20200252857A1

公开(公告)日：2020-08-06

申请号：US16853086

申请日：2020-04-20

Applicant: QUALCOMM Incorporated

Inventor： Piyush Gupta ,  Tingfang Ji ,  Chong Li ,  Shailesh Patil ,  Joseph Binamira Soriaga ,  Jing Jiang ,  Wei Zeng ,  Alexei Yurievitch Gorokhov ,  Junyi Li

IPC: H04W40/24 ,  H04W74/08 ,  H04W8/00 ,  H04W64/00 ,  H04W72/02

Abstract: Device detection in networks with mixed mobility devices is discussed. Devices in the network first determine a discovery mode from a plurality of discovery modes, wherein the determining is based on a mobility state of the wireless device. The device identifies a set of resources associated with the determined discovery mode, wherein each of the plurality of discovery modes is provisioned with separate resources. A discovery signal is transmitted using the identified set of resources according to the discovery mode. Thus, devices with higher mobility will generally send discovery signals more often than devices that are static or semi-static.

公开(公告)号：US10721769B2

公开(公告)日：2020-07-21

申请号：US15646618

申请日：2017-07-11

Applicant: QUALCOMM Incorporated

Inventor： Shailesh Patil ,  Junyi Li

IPC: H04W74/08 ,  H04W16/14 ,  H04W56/00 ,  H04W72/04 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. Contention procedures may include a shared radio frequency (RF) spectrum region to access resources in another shared RF spectrum region. For example, a wireless device may operate in a synchronous system and identify a set of target resources for a data transmission. The wireless device may contend for the target resources by performing a procedure, such as a listen-before-talk (LBT) procedure, in a first shared RF spectrum region that is smaller than, and overlaps in frequency with, a second shared RF spectrum region that includes the target resources. Resources used for the LBT procedure may be included in a different time period than the target resources, where LBT resources may correspond to target resources in different time periods. The target resources may also include multiple sub-channels, and LBT resources may be mapped to one or more of the sub-channels.

公开(公告)号：US20200229146A1

公开(公告)日：2020-07-16

申请号：US16830072

申请日：2020-03-25

Applicant: QUALCOMM INCORPORATED

Inventor： Kapil Gulati ,  Sudhir Kumar Baghel ,  Shailesh Patil ,  Tien Viet Nguyen ,  Zhibin Wu

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

Abstract: A user equipment (UE) may communicate with one or more other UEs using multiple transmissions in a device-to-device (D2D) communications deployment. A number of UEs may be configured with D2D resources, and a transmitting UE may identify available D2D resources from the configured resources. The transmitting UE may identify a resource for a first transmission of a D2D transmission from the available D2D resources, and may identify a second resource for a second transmission of the D2D transmission. The second transmission may be a blind HARQ transmission that may be transmitted to enhance the likelihood that one or more receiving UEs successfully receive the transmission. In some examples, the second resource may be identified based on other available resources within an predetermined time window around the first transmission.

公开(公告)号：US10674425B2

公开(公告)日：2020-06-02

申请号：US15080462

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Saurabha Rangrao Tavildar ,  Sudhir Kumar Baghel ,  Shailesh Patil ,  Michaela Vanderveen ,  Bilal Sadiq ,  Hong Cheng ,  Haris Zisimopoulos

IPC: H04W40/22 ,  H04B7/155 ,  H04W76/10 ,  H04W72/08 ,  H04W88/04 ,  H04W8/00

Abstract: A UE may move out of range of a network. Accordingly, the UE may use a relay node to communicate. To manage the relay node, a wireless device such as the UE may receive a relay search message from a second UE requesting a relay UE to establish a connection to the network through the relay UE. The UE may transmit a message to a base station informing the base station of the relay search message from the second UE. The UE may receive an initiate relay association procedure message from the base station, the initiate relay association procedure message informing the first UE that the first UE has been selected by the base station to initiate a relay association procedure with the second UE. The UE may transmit a relay association message to the second UE including a request to be the relay UE for the second UE.

公开(公告)号：US10609679B2

公开(公告)日：2020-03-31

申请号：US14811407

申请日：2015-07-28

Applicant: QUALCOMM Incorporated

Inventor： Libin Jiang ,  Shailesh Patil

IPC: H04W72/00 ,  H04W72/04 ,  H04L5/00 ,  H04W8/00 ,  H04W64/00 ,  H04W76/14

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus determines a position of the apparatus. The apparatus broadcasts information in a first subset of a set of resources. The information includes the position of the apparatus, a sequence ID, and a resource ID associated with a second subset of the set of resources. The apparatus broadcasts a sequence in at least one symbol of the second subset of the set of resources. The at least one symbol is identified by the resource ID and the sequence is identified by the sequence ID.

公开(公告)号：US10582459B2

公开(公告)日：2020-03-03

申请号：US16399400

申请日：2019-04-30

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Tien Viet Nguyen ,  Gene Fong ,  Shailesh Patil ,  Sudhir Kumar Baghel

IPC: H04W52/30 ,  H04W52/36 ,  H04W52/28 ,  H04W52/24 ,  H04W52/26 ,  H04B7/208 ,  H04B7/212 ,  H04B15/06 ,  H04W52/50

Abstract: A method, computer-readable medium, and apparatus operate to reduce or eliminate interference with one or more other communication systems having specific transmission requirements within a specific geographic area. For example, aspects operate by determining that a user equipment (UE) is in a protection zone where additional transmission requirements apply. The additional transmission requirements enable coexistence with one or more other communication systems in the protection zone. The UE may identify, based on being in the protection zone and a coexistence mode, one or more transmit emission limit requirements to be met. The UE may identify, based on being in the protection zone and the coexistence mode, one or more maximum transmit power requirements to be met. The UE may configure a transmit output power, at which the UE can meet the one or more transmit emission limit requirements and the one or more maximum transmit power requirements.