公开(公告)号：US10448236B2

公开(公告)日：2019-10-15

申请号：US15633610

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Aleksandar Damnjanovic ,  Michael Mao Wang

IPC: H04W8/00 ,  H04W56/00 ,  H04W76/14 ,  H04L1/18 ,  H04L5/00 ,  H04W72/08 ,  H04W72/04

Abstract: Base stations (such as small cells) may support active and dormant states. To facilitate state transitions, these cells may transmit discovery signals. The transmission design of both discovery signals and network synchronization signals from small cells should provide for regular periodicity, while supporting the benefit of transitioning between active and dormant states. Disclosed is a method, a computer program product, and an apparatus that determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, where both the first reference signal and the second reference signal are based on a same type of reference signal.

公开(公告)号：US10440771B2

公开(公告)日：2019-10-08

申请号：US15059153

申请日：2016-03-02

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Aleksandar Damnjanovic ,  Shimman Arvind Patel ,  Madhavan Srinivasan Vajapeyam ,  Michael Mao Wang ,  Hao Xu ,  Peter Gaal

IPC: H04L5/00 ,  H04W76/27 ,  H04L1/18 ,  H04L5/14

Abstract: Methods for managing hybrid automatic repeat request (HARQ) feedback are disclosed, where HARQ feedback operations by a receiving device may be modified. A receiving device may receive a data transmission. The receiving device may evaluate a condition for determining how to provide HARQ feedback in response to the data transmission. The receiving device may modify a HARQ feedback operation based at least in part on the condition. Modification of HARQ feedback operations may include turning off HARQ feedback, excluding negative acknowledgment (NAK) reporting, or excluding acknowledgement (ACK) reporting.

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：US10412755B2

公开(公告)日：2019-09-10

申请号：US15467697

申请日：2017-03-23

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Peter Gaal ,  Juan Montojo ,  Tao Luo

IPC: H04W72/12 ,  H04W16/14 ,  H04W72/04 ,  H04W72/14 ,  H04W74/08 ,  H04W84/12

Abstract: Techniques are described for wireless communication. One method includes identifying a first set of resources for a first uplink transmission. The first set of resources is based on a first set of frequency resource interlaces and a first set of frequency resource interlace segments. Each frequency resource interlace segment of the first set of frequency resource interlace segments includes a portion of resources of the frequency resource interlaces of the first set of frequency resource interlaces. The method also includes communicating on an uplink using the first set of resources.

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：US10356626B2

公开(公告)日：2019-07-16

申请号：US15636372

申请日：2017-06-28

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Taesang Yoo ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Siddhartha Mallik

IPC: H04W16/14 ,  H04W28/26 ,  H04W74/08 ,  H04W24/08 ,  H04W74/04 ,  H04W74/00 ,  H04W72/10 ,  H04W72/04

Abstract: Wireless communications systems and methods related to reclaiming of resources in a shared frequency spectrum shared by multiple operators are provided. A first wireless communication device associated with a first operator of a plurality of operators identifies a transmission opportunity in a shared frequency spectrum shared by the plurality of operators, wherein the first operator has priority among the plurality of operators for accessing the shared frequency spectrum in the transmission opportunity. The first wireless communication device communicates with a second wireless communication device associated with the first operator, in the transmission opportunity without a prior reservation of the transmission opportunity.

公开(公告)号：US10342043B2

公开(公告)日：2019-07-02

申请号：US15936071

申请日：2018-03-26

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Peter Gaal ,  Durga Prasad Malladi

IPC: H04L5/00 ,  H04W36/22 ,  H04W74/08

Abstract: Methods, systems, and devices are described contention-based channel access procedures that may enhance efficiency in communications using unlicensed spectrum. A time period may be identified during which base stations perform contention-based downlink channel access procedures for access to a channel in an unlicensed spectrum. The base stations may be coordinated such that different base stations may seek channel access during different time intervals during the time period. Contention-based uplink channel access procedures for UEs may then be modified to favor one or more UEs that are associated with a base station that has won channel access.