公开(公告)号：US20220159757A1

公开(公告)日：2022-05-19

申请号：US16951788

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Anantharaman BALASUBRAMANIAN ,  Sony AKKARAKARAN ,  Shuanshuan WU ,  Kapil GULATI

IPC: H04W76/15 ,  H04L1/18 ,  H04W68/00 ,  H04L1/00 ,  H04W76/27 ,  H04W80/02 ,  H04W72/04 ,  H04L5/00

Abstract: Apparatus, methods, and computer-readable media for facilitating relay of superpositioned sidelink and uplink transmission are disclosed herein. An example method for wireless communication at a first communication device includes receiving, from a UE, a MUST transmission including a base layer and an enhancement layer, the base layer comprising a first message for a second communication device and the enhancement layer comprising a second message for the first communication device. The example method also includes decoding the base layer of the MUST transmission to obtain the first message. Additionally, the example method includes receiving a feedback message from the second communication device indicating that the second communication device did not successfully receive the first message. The example method also includes retransmitting the first message to the second communication device in response to the feedback message from the second communication device.

公开(公告)号：US20220030603A1

公开(公告)日：2022-01-27

申请号：US17443226

申请日：2021-07-22

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Tien Viet NGUYEN ,  Sourjya DUTTA ,  Kapil GULATI ,  Shuanshuan WU

IPC: H04W72/12 ,  H04L1/18

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may identify a collision on a victim resource based at least in part on an aggressor reservation transmitted by a second UE. The first UE may transmit, to the second UE via a sidelink feedback channel, a resource collision indication that indicates at least one of the victim resource or the aggressor reservation, wherein the resource collision indication is multiplexed on one or more resources that are useable for sidelink feedback. Numerous other aspects are provided.

公开(公告)号：US20210400664A1

公开(公告)日：2021-12-23

申请号：US17353269

申请日：2021-06-21

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Tien Viet NGUYEN ,  Shuanshuan WU ,  Kapil GULATI ,  Peter GAAL ,  Wanshi CHEN ,  Seyedkianoush HOSSEINI

IPC: H04W72/04

Abstract: A sidelink user equipment (UE) limits sensing of received sidelink communications during a sensing window. The UE selects resources for a future transmission from a resource pool that is based on the sensed received sidelink communications. The UE also sends the future transmission on the selected resources. Limiting sensing may result from reducing a maximum distance between reservations to less than 32 logical slots. Limiting sensing may be sensing with a reduced sensing duty cycle with discontinuous sensing or sensing for a period of time in response to a trigger. The UE may perform partial sensing for periodic traffic, and limit sensing for aperiodic traffic.

公开(公告)号：US20210321368A1

公开(公告)日：2021-10-14

申请号：US17225681

申请日：2021-04-08

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Sudhir Kumar BAGHEL ,  Shuanshuan WU ,  Tien Viet NGUYEN ,  Kapil GULATI

IPC: H04W72/02 ,  H04W28/02 ,  H04W72/12 ,  H04W68/00 ,  H04B7/06 ,  H04W52/02 ,  H04W92/18

Abstract: Certain aspects of the present disclosure provide techniques for using physical resource blocks (PRBs) of a sidelink resource pool that, in some cases, might not belong to a sub-channel in sidelink or are assigned to a special sub-channel. When a user equipment (UE) is transmitting a sidelink communication, the sidelink communication often takes place in resource pools that include sub-channels in frequency domain and slots in a time domain. A first subset of PRBs of the resource pool may be assigned to one or more sub-channels in the frequency domain. The disclosed methods, devices, and systems provide for identifying PRBs not assigned to the first subset (e.g., remaining or unused PRBs or PRBs assigned to a special sub-channel). In some aspects of the present disclosure, the UE may use these PRBs for various purposes.

公开(公告)号：US20210258905A1

公开(公告)日：2021-08-19

申请号：US17174088

申请日：2021-02-11

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Shuanshuan WU ,  Kapil GULATI ,  Sudhir Kumar BAGHEL

IPC: H04W56/00 ,  H04W72/00 ,  H04W76/11 ,  H04L5/00 ,  H04W4/40 ,  H04L27/26 ,  H04W72/04

Abstract: Aspects relate to a demodulation reference signal (DMRS) in a sidelink wireless communication network. In some examples, a sidelink device generates a DMRS based on first and second identifiers of the sidelink device. In some examples, a sidelink device generates a DMRS based on an initialization parameter and/or at least one scaling parameter. In some examples, the initialization parameter may be based on a first identifier of a sidelink device. In some examples, the at least one scaling parameter may be based on a second identifier of a sidelink device. In some examples, a first sidelink device synchronizes with a second sidelink device based on broadcast channel information that is obtained by using DMRS information to decode a received broadcast signal. In some examples, the DMRS information may be based on first and second identifiers of the first sidelink device.

公开(公告)号：US20210204217A1

公开(公告)日：2021-07-01

申请号：US17247162

申请日：2020-12-02

Applicant: QUALCOMM Incorporated

Inventor： Anantharaman BALASUBRAMANIAN ,  Shuanshuan WU ,  Kapil GULATI ,  Sudhir Kumar BAGHEL ,  Wooseok NAM

IPC: H04W52/02 ,  H04W72/04

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain one or more measurements associated with a sidelink resource pool that includes one or more time and frequency resources allocated to sidelink transmissions to or from the UE. The UE may transmit, to an assisted UE, sidelink signaling that includes signaling to wake up the assisted UE and resource assistance information indicating the one or more measurements associated with the sidelink resource pool. Numerous other aspects are provided.

公开(公告)号：US20210153168A1

公开(公告)日：2021-05-20

申请号：US16951734

申请日：2020-11-18

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Kapil GULATI ,  Tien Viet NGUYEN ,  Shuanshuan WU ,  Sudhir Kumar BAGHEL

IPC: H04W72/02 ,  H04W72/04 ,  H04L1/00 ,  H04B7/06 ,  H04L5/00

Abstract: Aspects directed towards initializing sequence generators to facilitate sidelink communications are disclosed. In one example, a type associated with a sidelink communication is determined. A sequence generator is then initialized with a seed in which the seed is based on the type associated with the sidelink communication. The sequence generator is then utilized to facilitate transmitting at least a portion of the sidelink communication.

公开(公告)号：US20210105728A1

公开(公告)日：2021-04-08

申请号：US16948798

申请日：2020-10-01

Applicant: QUALCOMM Incorporated

Inventor： Tien Viet NGUYEN ,  Sudhir Kumar BAGHEL ,  Kapil GULATI ,  Gabi SARKIS ,  Junyi LI ,  Shuanshuan WU

IPC: H04W52/46 ,  H04W52/36 ,  H04L1/18 ,  H04L5/00 ,  H04W8/24 ,  H04W24/10 ,  H04B17/318 ,  H04L1/16

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify multiple candidate sets of physical sidelink feedback channel (PSFCH) transmissions that include hybrid automatic repeat request (HARQ) feedback for sidelink communications received from one or more peer UEs. The UE may select, from one or more of the multiple candidate sets that satisfy a PSFCH transmit power constraint, at least one candidate set that has a highest value for a utility parameter among utility parameters associated with each of the one or more candidate sets that satisfy a PSFCH transmit power constraint. The UE may transmit, on a PSFCH, the plurality of PSFCH transmissions included in the at least one candidate set in a HARQ feedback occasion. Numerous other aspects are provided.

公开(公告)号：US20210105119A1

公开(公告)日：2021-04-08

申请号：US17062020

申请日：2020-10-02

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Kapil GULATI ,  Alexandros MANOLAKOS ,  Shuanshuan WU ,  Sudhir Kumar BAGHEL ,  Tien Viet NGUYEN

IPC: H04L5/00 ,  H04W72/12 ,  H04L5/02

Abstract: Certain aspects of the present disclosure provide techniques for channel estimation for two-stage sidelink control using sidelink data channel demodulation reference signals (DMRS). A user equipment (UE) can transmit DMRS for the sidelink data channel. The UE may transmit the second stage of the sidelink control using antenna ports or a precoder used for the sidelink data channel. The receiving device may receive the DMRS, estimate the channel, and demodulate the second stage of the sidelink control based on the estimated channel. The receiving device may flexibly determine the DMRS to use for the estimation and demodulation.

公开(公告)号：US20210099918A1

公开(公告)日：2021-04-01

申请号：US17031325

申请日：2020-09-24

Applicant: QUALCOMM Incorporated

Inventor： Gabi SARKIS ,  Kapil GULATI ,  Tien Viet NGUYEN ,  Shuanshuan WU ,  Sudhir Kumar BAGHEL

IPC: H04W28/26 ,  H04W72/02 ,  H04W72/04

Abstract: Certain aspects of the present disclosure provide techniques for flexible resource reservations in sidelink communications. An example method that may be executed by a first user equipment (UE) includes determining, for sidelink communications with a second UE, one or more first resource reservations and one or more second resource reservations. The second resource reservations may have a different frequency resource allocation than the first resource reservations. The method also includes transmitting, to the second UE, control information having an indication of the first resource reservations and the second resource reservations. The method further includes communicating with the second UE based on the first resource reservations and the second resource reservations.