公开(公告)号：US20210195649A1

公开(公告)日：2021-06-24

申请号：US17090393

申请日：2020-11-05

Applicant: QUALCOMM INCORPORATED

Inventor： Yisheng Xue ,  Chih-Hao Liu ,  Xiaoxia Zhang ,  Jing Sun ,  Yongbin Wei ,  Seyed Ali Akbar Fakoorian

IPC: H04W74/08 ,  H04W72/04

Abstract: Wireless communications systems and methods related to autonomous sidelink communication in a radio frequency band (e.g., in a shared spectrum or an unlicensed spectrum) shared by multiple network operating entities are provided. A first user equipment (UE) performs a listen-before-talk (LBT) in a shared radio frequency band based on a first starting point of a plurality of starting points within an LBT gap duration. The first UE transmits, to a second UE, a first sidelink communication in the shared radio frequency band based on the LBT, the first sidelink communication including first sidelink control information (SCI) and first sidelink data.

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：US20210076331A1

公开(公告)日：2021-03-11

申请号：US16996751

申请日：2020-08-18

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Piyush Gupta ,  Xiaoxia Zhang ,  Jing Sun ,  Seyed Ali Akbar Fakoorian ,  Hua Wang

IPC: H04W52/14 ,  H04W52/48 ,  H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04W72/04

Abstract: Network-controlled power control for side-link communications is disclosed. According to the described aspects, a power control framework is defined for network-controlled side-band or device-to-device (D2D) communications, in which transmission power for side-link communications may be stepped up enough for a base station in a connected mode with at least one of multiple user equipment (UE) devices to detect side-link communications between the UEs in order to take responsive action to enhance the reliability of the communications. The base station provides the configuration information to the UEs which may be used when preparing for transmissions of side-link traffic and/or feedback.

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.

公开(公告)号：US10790861B2

公开(公告)日：2020-09-29

申请号：US15593075

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Mingxi Fan ,  Jiye Liang

IPC: H04L1/00 ,  H04W52/12 ,  H04W52/32 ,  H04W72/04 ,  H03M13/39 ,  H03M13/23 ,  H03M13/09 ,  H03M13/41 ,  H04L1/18 ,  H03M13/00 ,  H04L1/16 ,  H04L5/00

Abstract: Techniques to increase the capacity of a W-CDMA wireless communications system. In an exemplary embodiment, early termination of one or more transport channels on a W-CDMA wireless communications link is provided. In particular, early decoding is performed on slots as they are received over the air, and techniques are described for signaling acknowledgment messages (ACK's) for one or more transport channels correctly decoded to terminate the transmission of those transport channels. The techniques may be applied to the transmission of voice signals using the adaptive multi-rate (AMR) codec. Further exemplary embodiments describe aspects to reduce the transmission power and rate of power control commands sent over the air, as well as aspects for applying tail-biting convolutional codes in the system.

公开(公告)号：US20200221498A1

公开(公告)日：2020-07-09

申请号：US16723902

申请日：2019-12-20

Applicant: QUALCOMM Incorporated

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

IPC: H04W74/08 ,  H04W74/02 ,  H04L5/00 ,  H04W72/04 ,  H04W16/14

Abstract: New radio (NR) unlicensed (NR-U) operations are discussed with channel occupancy time (COT) multiple downlink-uplink switching opportunities supported by an active channel indication. A network node that initiates a COT for transmissions may identify a within-channel occupancy time (COT) scheduled downlink-uplink switching configuration. After beginning transmissions on the COT, the node receives an active channel indication from one or more additional network nodes. In response to the active channel indication, the node may then perform communications with the node from which the active channel indication is received according to the within-COT scheduled downlink-uplink switching configuration for the current COT on a shared communication channel.

公开(公告)号：US10687358B2

公开(公告)日：2020-06-16

申请号：US15808222

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Sadek ,  Aleksandar Damnjanovic ,  Yisheng Xue ,  Michael Mingxi Fan

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04L12/413

Abstract: An opportunistic asynchronous operation for coordinated new radio (NR) shared spectrum (NR-SS) operations is discussed. In a wireless network having at least one contention-based shared channel in which communications are configured having one or more control intervals time division multiplexed with one or more data intervals for transmission opportunities, a base station receives data for communication at a time during a current data interval on a contention-based shared channel. The base station will review its received signals on the contention-based shared channel during the previous control interval located immediately prior to the current data interval. If none of the received signals indicate a contention-resolution of the contention-based shared channel, the base station may begin an attempted transmission by performing an abbreviated clear channel assessment (CCA). If the CCA is detected as clear, the data may be transmitted.

公开(公告)号：US10574422B2

公开(公告)日：2020-02-25

申请号：US16016176

申请日：2018-06-22

Applicant: QUALCOMM Incorporated

Inventor： Qingsi Wang ,  Yisheng Xue ,  Siddhartha Mallik ,  Ahmed Kamel Sadek

IPC: H04W4/00 ,  H04L5/00 ,  H04L1/00 ,  H04L1/20 ,  H04L1/18 ,  H04W72/04 ,  H04L5/14

Abstract: Methods, systems, and devices for wireless communication are described. A method may include obtaining a first channel quality indicator (CQI) backoff value based on a first set of acknowledgment messages associated with a first subframe of a first interval; setting a modulation and coding scheme (MCS) of a first subframe of a second interval using the first CQI backoff value; obtaining a second CQI backoff value based on a second set of acknowledgment messages associated with a second subframe of the first interval; and setting a MCS of the second subframe of the second interval using the second CQI backoff value.

公开(公告)号：US20200059963A1

公开(公告)日：2020-02-20

申请号：US16537343

申请日：2019-08-09

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Yisheng Xue ,  Lorenzo Ferrari

IPC: H04W74/08 ,  H04W56/00 ,  H04W28/26

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device may perform a clear channel assessment on a medium to determine if the medium is available for communications with a second wireless device. Based on a successful clear channel assessment, the first wireless device may transmit a medium reservation message to the second wireless device. The second wireless device may then transmit a reservation response message to the first wireless device, where the reservation response message includes synchronization information for the first device to synchronize with the second wireless device. The synchronization information may include a duration of a channel occupancy time, a duration of a synchronous contention window, and/or a duration in which the first wireless device is to maintain synchronization with the second wireless device. Accordingly, the first wireless device and the second wireless device may communicate based on the synchronization information via the medium.

公开(公告)号：US10455457B2

公开(公告)日：2019-10-22

申请号：US15985048

申请日：2018-05-21

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yisheng Xue ,  Siddhartha Mallik ,  Tamer Kadous ,  Xiaoxia Zhang ,  Taesang Yoo ,  Michael Mingxi Fan ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Jing Sun

IPC: H04W28/26 ,  H04L5/00 ,  H04B7/06 ,  H04W52/24 ,  H04W16/14 ,  H04B17/336 ,  H04W74/08 ,  H04W84/04 ,  H04L5/14 ,  H04L27/00

Abstract: A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).