公开(公告)号：US10256955B2

公开(公告)日：2019-04-09

申请号：US15247355

申请日：2016-08-25

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Peter Gaal ,  Hao Xu ,  Wanshi Chen ,  Yongbin Wei ,  Xiaofeng Wang ,  Renqiu Wang ,  Seyed Ali Akbar Fakoorian ,  Madhavan Srinivasan Vajapeyam ,  Alberto Rico Alvarino ,  Juan Montojo

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04J11/00

Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation, which can be used for stand-alone/in-band/guard-band deployment. An example method is provided for operations which may be performed by a base station (BS). The example method generally includes generating a primary synchronization signal (PSS) utilizing a first code sequence and a cover code applied to the first code sequence over a first number of symbols within one or more subframes, generating a secondary synchronization signal (SSS) based on a second code sequence over a second number of symbols within one or more subframes, and transmitting the PSS and the SSS in the first and second subframes to a first type of a user equipment (UE) that communicates on one or more narrowband regions of wider system bandwidth.

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：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：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：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：US10110363B2

公开(公告)日：2018-10-23

申请号：US14988069

申请日：2016-01-05

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Shimman Arvind Patel ,  Tao Luo ,  Michael Mao Wang

IPC: H04L5/14 ,  H04L5/00 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. A wireless system utilizing one or more time-division duplexing (TDD) configured carriers may utilize a dual transmission time interval (TTI) structure (e.g., at the subframe level and symbol-level). The symbol level TTIs may be referred to as low latency (LL) TTIs, and may be organized within LL subframes. A LL subframe may be a subframe that is scheduled for transmissions in one direction (e.g., uplink or downlink, according to a TDD configuration) and may include multiple LL symbols scheduled for both uplink (UL) and downlink (DL) transmissions. Guard periods may be scheduled between adjacent LL symbols that have opposite directions of transmission to enable user equipment (UEs) to transition from receiving mode to transmit mode (or vice versa). The LL subframes may be transparent to receiving devices that do not support LL operations.

公开(公告)号：US20180302209A1

公开(公告)日：2018-10-18

申请号：US16012238

申请日：2018-06-19

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Wanshi Chen ,  Peter Gaal ,  Tao Luo

IPC: H04L5/00 ,  H04L27/00 ,  H04W72/04

Abstract: Techniques are described for wireless communication. A first method includes generating uplink control information at a wireless device, and transmitting the uplink control information over an interlace of a component carrier of an unlicensed radio frequency spectrum band. The interlace includes a plurality of non-contiguous concurrent resource blocks in the unlicensed radio frequency spectrum band, and at least two resource blocks in the interlace include different portions of the uplink control information. A second method includes generating uplink control information at a wireless device, and transmitting the uplink control information over an uplink control channel of an unlicensed radio frequency spectrum band. Resources of the uplink control channel are divided into a plurality of discrete dimensions and the uplink control information of the wireless device is transmitted over a number of the discrete dimensions allocated to the uplink control information of the wireless device.

公开(公告)号：US10084581B2

公开(公告)日：2018-09-25

申请号：US14743395

申请日：2015-06-18

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04L1/00 ,  H04L27/34 ,  H04W72/04 ,  H04L12/18 ,  H04L27/26 ,  H04W72/00

CPC classification number: H04L5/005 ,  H04L1/0058 ,  H04L5/0051 ,  H04L12/18 ,  H04L27/2607 ,  H04L27/3488 ,  H04W72/005 ,  H04W72/042

Abstract: Methods, systems, and devices are described for increased wireless communications system capacity through hierarchical modulation of multiple transmission layers during certain transmission subframes in a wireless communications system. Various deployment scenarios may be supported that may provide communications modulated on both a base modulation layer as well as on an enhancement modulation layer that is superpositioned on the base modulation layer. Reference signals may be provided for channel estimation for both the base modulation layer and enhancement modulation layer.

公开(公告)号：US10021677B2

公开(公告)日：2018-07-10

申请号：US14882165

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L1/18 ,  H04L5/00

CPC classification number: H04W72/042 ,  H04L1/0025 ,  H04L1/0027 ,  H04L1/0039 ,  H04L1/1861 ,  H04L5/0053 ,  H04L5/0091 ,  H04W72/0446

Abstract: Methods, systems, and devices are described for wireless communication employing two-stage control channel messaging. Systems, methods, and apparatuses for two stage two-stage physical downlink control channel (PDCCH) with a downlink control information (DCI) flag and DCI format size indicator are described. For instance, the present disclosure presents an example method of wireless communication at a wireless device, which may include receiving, at a first bandwidth and during a transmission time interval (TTI), a first control channel message. In addition, the example method may include determining, based on a flag in the first control channel message, whether a second control channel message is present in the TTI. Furthermore, the example method may include receiving, at a second bandwidth, the second control channel message where the flag indicates that the second control channel message is present for the TTI.

公开(公告)号：US10021638B2

公开(公告)日：2018-07-10

申请号：US15239711

申请日：2016-08-17

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Peter Gaal ,  Gavin Bernard Horn ,  Hao Xu ,  Tao Luo ,  Aleksandar Damnjanovic ,  Wanshi Chen

IPC: H04W52/02 ,  H04W72/04 ,  H04L5/00 ,  H04W24/02 ,  H04W36/38 ,  H04W74/08 ,  H04W76/27

CPC classification number: H04W52/0206 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0032 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0087 ,  H04W24/02 ,  H04W36/38 ,  H04W72/042 ,  H04W74/0833 ,  H04W76/27 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/25

Abstract: A method of wireless communication for an enhanced new carrier type cell includes transmitting downlink common signals and channels at a low duty cycle while in a dormant state. The method also includes transmitting downlink common signals and channels at a high duty cycle while in an active state. Another method of wireless communication includes receiving a trigger; and switching a cell between an active state and a dormant state based on the received trigger.