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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
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.
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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
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.
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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.
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284.发明申请公开(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
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.
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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.
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Patent Agency Ranking
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
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.
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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
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.
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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).
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公开(公告)号：US20180139782A1
公开(公告)日：2018-05-17
申请号：US15808222
申请日：2017-11-09
Applicant: QUALCOMM Incorporated
Inventor： Ahmed Sadek , Aleksandar Damnjanovic , Yisheng Xue , Michael Mingxi Fan
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.
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290.发明授权公开(公告)号：US12295035B2
公开(公告)日：2025-05-06
申请号：US17906509
申请日：2020-04-16
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Xiaoxia Zhang , Changlong Xu , Chih-Hao Liu , Ozcan Ozturk , Yisheng Xue
IPC: H04W74/0816 , H04L27/26 , H04W72/25 , H04W74/08
Abstract: Wireless communications systems and methods related to use of cyclic prefix (CP) extensions for channel occupancy time (COT) sharing among sidelink user equipment devices (UEs) are provided. A first UE detects a first sidelink transmission in a COT, the COT for sharing with multiple sidelink UEs including the first sidelink UE. The first UE may determine a CP extension length for transmitting a second sidelink transmission after the first sidelink transmission, where a gap duration between the first sidelink transmission and the second sidelink transmission satisfies a listen-before-talk (LBT) gap time threshold. The first UE may apply a CP extension having the CP extension length to the second sidelink transmission and transmit, to a second sidelink UE, the second sidelink transmission with the CP extension.
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