公开(公告)号：US10219292B2

公开(公告)日：2019-02-26

申请号：US14869152

申请日：2015-09-29

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Taesang Yoo ,  Siddhartha Mallik ,  Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Madhavan Srinivasan Vajapeyam ,  Durga Prasad Malladi ,  Yongbin Wei ,  Tao Luo

IPC: H04W72/12 ,  H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04W72/14

Abstract: Methods, systems, and devices for wireless communication are described. A base station may employ a multiplexing configuration based on latency and efficiency considerations. The base station may transmit a resource grant, a signal indicating the length of a downlink (DL) transmission time interval (TTI), and a signal indicating the length of a subsequent uplink (UL) TTI to one or more user equipment (UEs). The base station may dynamically select a new multiplexing configuration by, for example, setting the length of an UL TTI to zero or assigning multiple UEs resources in the same DL TTI. Latency may also be reduced by employing block feedback, such as block hybrid automatic repeat request (HARQ) feedback. A UE may determine and transmit HARQ feedback for each transport block (TB) of a set of TBs, which may be based on a time duration of a downlink TTI.

公开(公告)号：US20190059106A1

公开(公告)日：2019-02-21

申请号：US16056128

申请日：2018-08-06

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Jing Sun

IPC: H04W74/08 ,  H04W16/14 ,  H04W48/16 ,  H04W56/00 ,  H04L5/00 ,  H04W72/04

Abstract: Wireless communications systems and methods related to performing listen-before-talk (LBT) with discovery signal transmissions for spectrum sharing are provided. A wireless communication device senses a channel in a spatial domain based on a plurality of expected beam transmission directions, wherein the wireless communication device is associated with a first network operating entity, and wherein the channel is shared by a plurality of network operating entities including the first network operating entity. The wireless communication device transmits a plurality of discovery signals in one or more of the plurality of expected beam transmission directions during a discovery period to facilitate synchronization in the channel based on the sensing.

公开(公告)号：US10212636B2

公开(公告)日：2019-02-19

申请号：US14956686

申请日：2015-12-02

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Ravindra Manohar Patwardhan

IPC: H04W16/14 ,  H04W36/24 ,  H04W36/30 ,  H04W24/10

Abstract: Techniques for managing handovers in an unlicensed radio frequency spectrum band may provide that a serving base station may receive one or more base station measurement reports and one or more UE measurement reports. The base station measurement reports may include information associated with one or more devices that may transmit signals using an unlicensed radio frequency spectrum band. The UE measurement reports may include information associated with one or more devices that may generate interfering signals at the UE, which may include interfering signals from one or more devices that are not detected by the serving base station. The serving base station may, in some examples, determine whether to handover the UE to a second base station based at least in part on the base station measurement report and the UE measurement report.

公开(公告)号：US20190029013A1

公开(公告)日：2019-01-24

申请号：US16129452

申请日：2018-09-12

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Aleksandar Damnjanovic ,  Onkar Jayant Dabeer ,  Peter Gaal ,  Wanshi Chen ,  Shimman Arvind Patel ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04W72/04 ,  H04L1/18 ,  H04W74/08 ,  H04W72/14 ,  H04W28/02 ,  H04W76/27

Abstract: Certain aspects relate to methods and apparatus for latency reduction for UEs in a RRC connected mode. During contention-based uplink access by groups of UEs within a subframe, an eNB may decode the received uplink transmission based, at least in part, on the assigned group of resources assigned to the UE and used for transmission. Additional orthogonalization techniques such as reduced TTI size can be used to reduce collisions among different users performing contention-based transmissions. Furthermore, when the eNB fails to successfully decode the uplink transmission, the eNB may identify the UE that sent the uplink transmission based on a detected reference signal and may transmit an uplink assignment to the identified UE.

公开(公告)号：US10159049B2

公开(公告)日：2018-12-18

申请号：US15680017

申请日：2017-08-17

Applicant: QUALCOMM Incorporated

Inventor： Onkar Dabeer ,  Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Wanshi Chen ,  Kiran Kumar Somasundaram ,  Naga Bhushan

IPC: H04W52/24 ,  H04W52/26 ,  H04W74/08 ,  H04W52/22 ,  H04B7/08

Abstract: Techniques are described for contention-based wireless communications channel access that may improve the likelihood that a contention procedure will pass and allow a device to transmit an uplink or downlink transmission using the contention-based channel. Various disclosed techniques may determine a transmit power for a subsequent transmission based on channel characteristics during one or more clear channel assessment (CCA) time durations. The transmit power may be selected to provide a CCA threshold that may increase the likelihood that a device will win contention for the channel during the CCA procedure.

公开(公告)号：US10154437B2

公开(公告)日：2018-12-11

申请号：US15460538

申请日：2017-03-16

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: H04J3/06 ,  H04W28/08 ,  H04W28/02 ,  H04W74/08 ,  H04W24/02 ,  H04W28/16 ,  H04W72/04 ,  H04W56/00 ,  H04W74/04 ,  H04W16/14 ,  H04W76/02 ,  H04L1/00 ,  H04L27/26 ,  H04L27/00 ,  H04W48/10 ,  H04W72/08 ,  H04W74/00 ,  H04L5/14 ,  H04L5/00 ,  H04W84/12 ,  H04W88/06 ,  H04W88/08 ,  H04J11/00 ,  H04W88/02

Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes synchronizing clear channel assessment (CCA) slots across a plurality of base stations to determine availability of an unlicensed spectrum for transmissions in a next transmission interval. A second method includes performing a CCA during one of a plurality of CCA slots synchronized across a plurality of evolved Node Bs (eNBs) to determine availability of unlicensed spectrum for transmissions in a next transmission interval.

公开(公告)号：US10129859B2

公开(公告)日：2018-11-13

申请号：US15191460

申请日：2016-06-23

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  Hao Xu ,  Juan Montojo ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04J11/00 ,  H04W74/08 ,  H04L5/00 ,  H04W56/00 ,  H04W76/27

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device such as a user equipment (UE) or a base station may identify a set of resource element groups (REGs) for low latency communication, and each REG may include a portion of a different resource block (RB) of a set of RBs (e.g., a set of non-contiguous RBs). The device may then map an uplink control channel to the selected REGs and communicate on the uplink control channel accordingly. Reference signals may also be transmitted in the same RBs, and the REGs may be mapped around the resources used for reference signals. In some cases, multiple UEs may transmit uplink control data using the same resources using code division multiplexing (CDM) (e.g., if the control payload is relatively small). In other cases, multiple UEs may be frequency division multiplexed (FDM).

公开(公告)号：US10127822B2

公开(公告)日：2018-11-13

申请号：US15712103

申请日：2017-09-21

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Juan Montojo ,  Yongbin Wei ,  Peter Gaal ,  Alberto Rico Alvarino ,  Edward Teague

IPC: G08G5/00 ,  B64C39/02 ,  G05D1/00

Abstract: The disclosure relates to drone user equipment (UE) indications that may be conveyed to a wireless network. In particular, a UE that has flight capabilities (i.e., capabilities to operate as an unmanned aircraft system) and optional further capabilities to report a current height level may indicate such capabilities to the wireless network. As such, the wireless network may differentiate the drone UE from other UEs that only operate on the ground. Furthermore, the optional current height level may enable the wireless network to differentiate among drone UEs operating at different heights and/or from other UEs that are operating on the ground. The wireless network may further use the information indicating the flight capabilities either alone or in combination with the optional height information to configure power control parameters, manage interference, provide mobility management functions, generate neighbor lists, control beamforming, or implement a radio resource configuration or management procedure.

公开(公告)号：US20180324751A1

公开(公告)日：2018-11-08

申请号：US15956440

申请日：2018-04-18

Applicant: QUALCOMM Incorporated

Inventor： Karl Georg Hampel ,  Muhammad Nazmul Islam ,  Keiichi Kubota ,  Aleksandar Damnjanovic

IPC: H04W68/02 ,  H04W76/11 ,  H04W76/18 ,  H04W76/27

CPC classification number: H04W68/02 ,  H04W4/70 ,  H04W28/06 ,  H04W68/025 ,  H04W72/0406 ,  H04W76/11 ,  H04W76/18 ,  H04W76/27

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may receive a compressed paging message broadcast from a base station, and transmit a connection request in response. The wireless device may include a paging response indication (e.g., indicating the connection request results from a received, false or genuine, paging request) and a wireless device identification (e.g., a UE ID) into the modified connection request. The base station may identify the connection request is in response to a paging broadcast by receiving the paging response indication, and determine if the connection request occurred in response to a false paging alert by comparing the received UE ID to the uncompressed paging request message list. If a match is found, the base station may transmit a connection establishment request. If a match is not found the base station may transmit a connection rejection message to the wireless device.

公开(公告)号：US10123344B2

公开(公告)日：2018-11-06

申请号：US14163874

申请日：2014-01-24

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tao Luo ,  Peter Gaal ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04L5/00 ,  H04L1/00

Abstract: Methods, systems, and devices are described for scheduling transmissions for multiple subframes in a single scheduling operation. Scheduling information is provided in a multi-subframe scheduling information transmission for a set of subframes. Differences in characteristics for subframes under the multi-subframe information are determined, and one or more properties for communication during the one or more subframes may be adjusted based on subframe characteristics. Such multi-subframe scheduling may allow for reduced overhead for scheduling uplink or downlink transmissions.