公开(公告)号：US20200228949A1

公开(公告)日：2020-07-16

申请号：US16738970

申请日：2020-01-09

Applicant: QUALCOMM Incorporated

Inventor： Arjun Bharadwaj ,  Tien Viet Nguyen ,  Kapil Gulati ,  Sudhir Kumar Baghel

IPC: H04W4/44 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described that may enable a user equipment (UE) to transmit sidelink data within an interference avoidance resource scheduling scheme. For example, a UE may determine to segment a data packet for transmission in a vehicle-to-everything (V2x) system (e.g., to ensure that each segment fits within one transmission time interval (TTI)). In some cases, a UE may identify a data packet for transmission, may determine that the size of the data packet exceeds a threshold size, may segment the data packet to ensure each segment fits within one TTI, and may transmit the data packet segments (e.g., to additional UEs), where said transmissions may be discontinuous. In some examples, a UE may determine to segment the data packet and then encode the data packet. Additionally or alternatively, the UE may determine to encode the data packet and then segment the data packet.

公开(公告)号：US20200154501A1

公开(公告)日：2020-05-14

申请号：US16673886

申请日：2019-11-04

Applicant: QUALCOMM Incorporated

Inventor： Hong Cheng ,  Arjun Bharadwaj ,  Sudhir Kumar Baghel ,  Kapil Gulati ,  Zhibin Wu ,  Junyi Li ,  Shailesh Patil

IPC: H04W76/23 ,  H04W4/40 ,  H04W36/00

Abstract: Methods, systems, and devices for wireless communications are described. The method, system, and apparatus may include managing the operation mode of a user equipment in vehicle-to-everything communication. In some aspects, a user equipment may transmit an inactive request message (or a request message) to a base station to indicate the user equipment is switching from a base station scheduling mode (or a radio access network node scheduling mode) to a peer user equipment scheduling mode (or a roadside unit scheduling mode). The user equipment may receive an acknowledgment message from the base station indicating a state change to allow the peer user equipment scheduling mode. In some cases, the user equipment may receive an area identifier from the base station, and the area identifier may indicate an area where the peer user equipment scheduling mode is allowed.

公开(公告)号：US20200084656A1

公开(公告)日：2020-03-12

申请号：US16562072

申请日：2019-09-05

Applicant: QUALCOMM Incorporated

Inventor： Tien Viet NGUYEN ,  Shailesh Patil ,  Sudhir Kumar Baghel ,  Junyi Li ,  Kapil Gulati

IPC: H04W28/02 ,  H04L5/16 ,  H04W92/18 ,  H04W74/08

Abstract: Aspects described herein relate to determining a group of relaying user equipment (UEs), selecting a sub-channel of multiple sub-channels for transmitting, to the group of relaying UEs, quality-of-service (QoS) traffic along with one or more other transmitting UEs in the time duration, and transmitting the QoS traffic to the group of relaying UEs in the same time duration over the sub-channel.

公开(公告)号：US10581575B2

公开(公告)日：2020-03-03

申请号：US16514186

申请日：2019-07-17

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/26 ,  H04W72/04 ,  H04J13/00 ,  H04W92/18

Abstract: A transmitting UE may in a device-to-device (D2D) communication may identify a demodulation reference signal (DMRS) sequence for a D2D transmission based at least in part on a subset of bits of a sidelink control information (SCI) transmission. The subset of bits of the SCI transmission may be selected such that the bits have sufficient variability to reduce the likelihood that multiple UEs may use the same DMRS sequence. The subset of bits of the SCI transmission may be all or a portion of a cyclic redundancy check (CRC) for the SCI.

公开(公告)号：US10575149B2

公开(公告)日：2020-02-25

申请号：US15920401

申请日：2018-03-13

Applicant: QUALCOMM Incorporated

Inventor： Zhibin Wu ,  Shailesh Patil ,  Sudhir Kumar Baghel ,  Libin Jiang ,  Junyi Li ,  Kapil Gulati ,  Tien Viet Nguyen ,  Georgios Tsirtsis

IPC: H04W4/40 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04W4/46 ,  G08G1/00 ,  H04W4/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE), e.g., a lead platooning vehicle configured for wireless communications, may determine a communication resource requirement for a group of platooning vehicles. The communication resource requirement may be based at least in part on a number of vehicles forming the group of platooning vehicles and a communication range of at least a portion of the vehicles. The UE may identify, based at least in part on the identified communication resource requirement, an assignment of time-frequency radio resources to use for inter-vehicle communications in the group of platooning vehicles. The UE may transmit an indication of the assignment of time-frequency radio resources to the group of platooning vehicles.

公开(公告)号：US20200033442A1

公开(公告)日：2020-01-30

申请号：US16512267

申请日：2019-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Junyi Li ,  Sundar Subramanian ,  Jayakrishnan Unnikrishnan

IPC: G01S7/292 ,  G01S13/36 ,  G01S7/288 ,  H04J13/00

Abstract: A method and apparatus for selecting frequency modulated continuous wave waveform parameters for multiple radar coexistence by a user equipment is described. The user equipment may transmit a radar waveform consisting of a number of chirps, with each chirp having a same duration. The user equipment may vary waveform parameters of the radar waveform for at least a subset of the number of chirp, where the waveform parameters may be chosen from a codebook comprising at least one codeword of parameters. Reflected radar waveforms are received and processed where the processing includes applying a fast time discrete Fourier transform to reflected radar waveforms to produce a one dimension peak in a time delay dimension for each reflected waveform; and applying a slow time discrete Fourier transform to the reflected radar waveforms, where peaks for the reflected waveforms are added.

公开(公告)号：US10530461B2

公开(公告)日：2020-01-07

申请号：US15065552

申请日：2016-03-09

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/155

Abstract: A user equipment (UE) may be outside of the coverage area of a base station or other access point, which may impede access by the UE of a core network, server, or the like. Therefore, a UE may establish a relay connection to access resources when the UE is outside of a coverage area provided by a base station or access point. In aspects, an apparatus may be configured to transmit, to a set of relay UEs, a first message associated with establishment of a relay connection. The apparatus may be further configured to receive a set of messages from the set of relay UEs. The apparatus may be further configured to establish the relay connection with a first relay UE of the set of relay UEs based on a message of the set of messages from the first relay UE.

公开(公告)号：US10524282B2

公开(公告)日：2019-12-31

申请号：US14608851

申请日：2015-01-29

Applicant: QUALCOMM Incorporated

Inventor： Saurabha Rangrao Tavildar ,  Sudhir Kumar Baghel ,  Shailesh Patil ,  Kapil Gulati

IPC: H04W72/12 ,  H04W28/02 ,  H04W84/18 ,  H04L1/08 ,  H04L1/00 ,  H04L1/18 ,  H04W72/14

Abstract: Methods, systems, and devices are described for transmissions and retransmissions of scheduling assignment (SA) information, and for content of SA transmissions. SAs may be transmitted during an initial communications period, followed by data transmissions for a certain time period. A device may monitor for transmissions during the SA period and then monitor for data transmissions during periods indicated in a received SA. SAs may be retransmitted according to a retransmission pattern that may provide time or frequency diversity patterns in order to enhance reception of SAs at a receiving device. Retransmission patterns may be determined based on a resource from an SA resource pool that is used for an initial transmission of the SA.

公开(公告)号：US10477371B2

公开(公告)日：2019-11-12

申请号：US15465877

申请日：2017-03-22

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Shailesh Patil ,  Gaurav Gupta ,  Sudhir Kumar Baghel ,  Marco Papaleo

IPC: H04W4/80 ,  H04W4/70 ,  H04W8/00 ,  H04W16/14 ,  H04W76/10 ,  H04W88/02

Abstract: An effective way for the cellular device-to-device communication and the short range communication to share a set of channels for communication is desired. The apparatus may be a user equipment (UE). The apparatus determines a priority level of each channel of a plurality of channels. The apparatus determines whether a first channel of the plurality of channels, the first channel having a highest priority level, is occupied by short range wireless communication. If the first channel is occupied by the short range wireless communication, the apparatus determines availability of one or more remaining channels of the plurality of channels for a cellular device-to-device (D2D) communication, where the one or more remaining channels are different from the first channel.

公开(公告)号：US20190293748A1

公开(公告)日：2019-09-26

申请号：US16354018

申请日：2019-03-14

Applicant: QUALCOMM Incorporated

Inventor： Kapil Gulati ,  Junyi Li ,  Sundar Subramanian ,  Jayakrishnan Unnikrishnan

IPC: G01S7/02 ,  H04W74/00 ,  G01S7/40

Abstract: Methods, systems, and devices for wireless communications are described. In some systems, radio signals may reach a receiving antenna at a user equipment by two or more paths, which can cause interference (e.g., destructive multipath interference, constructive multipath interference, etc.). To reduce the interference, the user equipment may perform interference suppression, shaping, or both based on choosing radar waveform patterns that are varied across chirps. In one aspect, the user equipment (e.g., a vehicle) may identify waveform patterns selected by nearby vehicles based on side channel or centralized signaling and may suppress or shape interference by selecting waveform parameters based on this information. In one aspect, the pattern of waveform parameters is chosen from a codebook of patterns. The selected pattern can be broadcasted to the other vehicles using a side-communication channel.