公开(公告)号：US10425928B2

公开(公告)日：2019-09-24

申请号：US15894514

申请日：2018-02-12

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04W72/12 ,  H04W72/04 ,  H04W28/06 ,  H04J13/00 ,  H04L5/00 ,  H04W76/27 ,  H04L5/14

Abstract: A first method for wireless communications may comprise determining sizes of payloads of user equipments (UEs), determining whether to multiplex the payloads of the UEs based on the sizes of the payloads, and allocating codes or cyclic shifts to the UEs to transmit the payloads on a single interlace of resources. A second method for wireless communications may comprise determining a first code or a first cyclic shift used for a first transmission using an interlace of resources, and allocating second codes or second cyclic shifts to UEs for a second transmission, where the second transmission may be multiplexed with the first transmission on the interlace of resources. A third method for wireless communications may comprise allocating a first interlace of resources for a first transmission for occupying an unlicensed radio frequency spectrum band, and allocating a second interlace of resources, occupied by a base station, for a second transmission.

公开(公告)号：US10425187B2

公开(公告)日：2019-09-24

申请号：US14866318

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Arumugam Chendamarai Kannan ,  Tao Luo ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W16/14 ,  H04L1/00 ,  H04B17/345 ,  H04W72/04 ,  H04W74/08 ,  H04W84/04 ,  H04W84/12

Abstract: In an unlicensed band, different types of interference may be experienced by user equipments (UEs), and a serving evolved Node B (eNB) may not be aware of the interference types affecting a UE. Therefore, aspects presented herein provide UE assisted interference learning, in which the UE detects an interfering signal and reports information such as the interference level and properties of the interfering signal to a serving eNB. Another aspects presented herein provide for an eNB which receives, from one or more UEs, information indicating properties of each of at least one interfering signals experienced by the UEs, such as interference types affecting the UEs. The eNB further uses the information received from the UE, including the wireless technology type to determine the properties of its downlink transmission and the length of the contention window leading up to its downlink transmission.

公开(公告)号：US10420054B2

公开(公告)日：2019-09-17

申请号：US14636361

申请日：2015-03-03

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Durga Prasad Malladi ,  Naga Bhushan ,  Tingfang Ji ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04W56/00 ,  H04J3/14 ,  H04J1/16 ,  H04J3/16 ,  H01Q5/25 ,  H04L5/00 ,  H04L5/06 ,  H04L1/00 ,  H04L5/14

Abstract: Methods, systems, and devices are described for low latency communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system and may send triggers to initiate communications using a dedicated resource in a wireless communications network that supports transmissions having a first subframe type and a second subframe type, the first subframe type comprising symbols of a first duration and the second subframe type comprising symbols of a second duration that is shorter than the first duration. Communications may be initiated by transmitting a trigger from the UE or eNB using the dedicated resource, and initiating communications following the trigger. The duration of time between the trigger and initiating communications can be significantly shorter than the time to initiate communications using legacy LTE communications.

公开(公告)号：US20190281631A1

公开(公告)日：2019-09-12

申请号：US16427163

申请日：2019-05-30

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Tao Luo ,  Tingfang Ji ,  Gavin Bernard Horn ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W74/08 ,  H04W74/00 ,  H04L5/00 ,  H04W28/02 ,  H04W24/02 ,  H04W28/16 ,  H04W72/04 ,  H04W56/00 ,  H04W74/04 ,  H04L1/00 ,  H04W16/14 ,  H04W76/15 ,  H04L5/14 ,  H04W72/08 ,  H04W48/10 ,  H04W28/08 ,  H04L27/26 ,  H04L27/00

Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. One method includes performing a clear channel assessment (CCA) for an unlicensed spectrum in a current gating interval to determine whether the unlicensed spectrum is available for a transmission in a next transmission interval, and gating OFF the transmission in the unlicensed spectrum for the next transmission interval when the determination is that the unlicensed spectrum is unavailable.

公开(公告)号：US10411856B2

公开(公告)日：2019-09-10

申请号：US14866313

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Hao Xu ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04L27/26 ,  H04W76/27 ,  H04B17/318 ,  H04W52/32

Abstract: Techniques are provided for reference signal transmissions and transmit power ratio determination in non-orthogonal transmissions. A traffic-to-pilot power ratio (TPR) may be determined for a base layer for a non-orthogonal channel and another TPR may be determined for an enhancement layer for the non-orthogonal channel. Reference signal transmissions may be transmitted by a base station at a reference signal transmission power, and a user equipment (UE) may estimate channel quality for the base layer or the enhancement layer based at least in part on an energy level of the received reference signal and one or more of the first TPR or the second TPR. A base station may transmit TPR signaling that may indicate one or more TPR values for one or both of the base layer or enhancement layer.

公开(公告)号：US20190268778A1

公开(公告)日：2019-08-29

申请号：US16411428

申请日：2019-05-14

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Tao Luo ,  Jing Sun ,  Taesang Yoo ,  Yongbin Wei

IPC: H04W16/14 ,  H04W74/00 ,  H04W74/08 ,  H04L1/18 ,  H04L1/00 ,  H04W76/28

Abstract: Methods, systems, and devices for wireless communication are described. Discontinuous reception (DRX) operation may be configured differently on enhanced component carriers (eCCs) than on other component carriers, including a primary cell (PCell). In some cases, a user equipment (UE) may be configured with several different eCC DRX modes. An eCC DRX configuration may, for example, be coordinated with downlink (DL) transmission time interval (TTI) scheduling so each DRX ON duration may correspond to a DL burst duration of the corresponding eCC. The eCC DRX ON durations may also be scheduled according to hybrid automatic repeat request (HARQ) process scheduling. In some examples, eCC DRX ON durations may be based on listen-before-talk (LBT) procedures. In some cases, eCC DRX ON durations may be configured to contain an uplink (UL) burst to enable channel state information (CSI) reporting. The eCC DRX may also be configured to minimize interruption of the PCell.

公开(公告)号：US20190246422A1

公开(公告)日：2019-08-08

申请号：US16390495

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Shimman Arvind Patel ,  Wanshi Chen ,  Naga Bhushan ,  Yongbin Wei ,  Hao Xu ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Durga Prasad Malladi ,  Srinivas Yerramalli ,  Peter Gaal

IPC: H04W74/00 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04L5/14 ,  H04W56/00

CPC classification number: H04W74/002 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0091 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/261 ,  H04L27/2613 ,  H04W56/00 ,  H04W74/0808 ,  H04W74/0833

Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.

公开(公告)号：US20190229788A1

公开(公告)日：2019-07-25

申请号：US16241747

申请日：2019-01-07

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Kapil Bhattad ,  Jing Sun ,  Qingjiang Tian ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04B7/0456 ,  H04B7/06 ,  H04L1/00 ,  H04L1/16 ,  H04W74/08 ,  H04L5/00

Abstract: Wireless communications systems and methods related to performing adaptive autonomous uplink (UL) communications are provided. A first wireless communication device receives, from a second wireless communication device, an autonomous uplink transmission configuration. The first wireless communication device determines a transmission parameter in response to a link adaptation parameter based on the autonomous uplink transmission configuration. The first wireless communication device transmits, to the second wireless communication device, an autonomous uplink communication signal based on the determined transmission parameter.

公开(公告)号：US10334447B2

公开(公告)日：2019-06-25

申请号：US15042491

申请日：2016-02-12

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Jelena Damnjanovic ,  Aleksandar Damnjanovic ,  Tao Luo ,  Jing Sun ,  Taesang Yoo ,  Yongbin Wei

IPC: H04W16/14 ,  H04W74/00 ,  H04W74/08 ,  H04L1/00 ,  H04L1/18 ,  H04W76/28 ,  H04L5/00 ,  H04W76/15

Abstract: Methods, systems, and devices for wireless communication are described. Discontinuous reception (DRX) operation may be configured differently on enhanced component carriers (eCCs) than on other component carriers, including a primary cell (PCell). In some cases, a user equipment (UE) may be configured with several different eCC DRX modes. An eCC DRX configuration may, for example, be coordinated with downlink (DL) transmission time interval (TTI) scheduling so each DRX ON duration may correspond to a DL burst duration of the corresponding eCC. The eCC DRX ON durations may also be scheduled according to hybrid automatic repeat request (HARD) process scheduling. In some examples, eCC DRX ON durations may be based on listen-before-talk (LBT) procedures. In some cases, eCC DRX ON durations may be configured to contain an uplink (UL) burst to enable channel state information (CSI) reporting. The eCC DRX may also be configured to minimize interruption of the PCell.

公开(公告)号：US20190182845A1

公开(公告)日：2019-06-13

申请号：US16190927

申请日：2018-11-14

Applicant: QUALCOMM Incorporated

Inventor： Yisheng Xue ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Weiliang Zeng ,  Tamer Kadous ,  Yongbin Wei

IPC: H04W72/08 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may identify a contention window for a no-energy-detection protocol for determining a channel availability for a data transmission. After the contention window expires, the transmitter may send a request message to a receiver. The receiver may measure a quality of the request message against a request threshold and transmit a response message if the measured quality exceeds the request threshold. The transmitter may then measure a quality of the response message against a response threshold. If the measured quality exceeds the response threshold, the transmitter may initiate a data transmission with the receiver. If the quality falls below the response threshold or the response message is not received, the transmitter may adjust the contention window and reattempt the no-energy-detection protocol. The contention window may also be adjusted based on an acknowledgement message received after the data transmission.