公开(公告)号：US20190199504A1

公开(公告)日：2019-06-27

申请号：US16289107

申请日：2019-02-28

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Sundar Subramanian ,  Junyi Li ,  Durga Prasad Malladi ,  Karl Georg Hampel ,  Muhammad Nazmul Islam

IPC: H04L5/14 ,  H04B7/06 ,  H04B7/0408 ,  H04B7/0404 ,  H04L5/16

CPC classification number: H04L5/1438 ,  H04B7/0404 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0619 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/0082 ,  H04L5/0092 ,  H04L5/143 ,  H04L5/16 ,  H04W52/243 ,  H04W52/343

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may identify a set of power configurations for a plurality of communications with at least one target device. The set of power configurations may be based at least in part on a type of signal, a type of channel, a parameter of the wireless device, a parameter of the target device, or a combination thereof. The wireless device may then determine a duplexing mode for the plurality of communications based at least in part on the set of power configurations. The duplexing mode may be, for example, a full duplex mode or a half-duplex mode. The wireless device may then transmit the plurality of communications to and/or receive the plurality of communications from the at least one target device according to the set of power configurations and the selected duplexing mode.

公开(公告)号：US10321392B2

公开(公告)日：2019-06-11

申请号：US15915682

申请日：2018-03-08

Applicant: QUALCOMM Incorporated

Inventor： Miguel Griot ,  Gavin Bernard Horn ,  Durga Prasad Malladi

IPC: H04W48/18 ,  H04W24/02 ,  H04W8/18 ,  H04W28/02 ,  H04W76/15 ,  H04W28/08

Abstract: Techniques are described for configuring wireless service for a user equipment (UE) in a wireless communications network in which the UE may be served over one or more of multiple available cells. Wireless service for the UE may be configured based on parameters associated with each of the multiple cells, such as, for example, a primary/secondary cell designation of a cell, whether the cell operates using a licensed or an unlicensed radio frequency spectrum band, a radio access technology associated with a cell, and/or an operating frequency band of a cell. Based on the parameters for each cell, one or more cell configurations for serving the UE may be provided. The cell configurations may identify, for example, a set of rules that control how much and/or what type of traffic is sent on different cells.

公开(公告)号：US20190116590A1

公开(公告)日：2019-04-18

申请号：US16218214

申请日：2018-12-12

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04W72/12 ,  H04W74/00

Abstract: Techniques are described for wireless communication. A first method includes identifying a first interval for an uplink transmission in a shared radio frequency spectrum band; identifying a second interval for the uplink transmission; comparing the first interval with the second interval; and determining uplink resources to use for the uplink transmission based at least in part on the comparison of the first interval with the second interval. A second method includes transmitting one or more assignments of uplink resources to use for an uplink transmission in a shared radio frequency spectrum band; detecting a duration of the uplink transmission; and identifying uplink resources used for the uplink transmission based at least in part on the detecting.

公开(公告)号：US10251172B2

公开(公告)日：2019-04-02

申请号：US15461192

申请日：2017-03-16

Applicant: QUALCOMM Incorporated

Inventor： Navid Abedini ,  Tao Luo ,  Sundar Subramanian ,  Muhammad Nazmul Islam ,  Bilal Sadiq ,  Ashwin Sampath ,  Juergen Cezanne ,  Junyi Li ,  Krishna Kiran Mukkavilli ,  Durga Prasad Malladi ,  Ozge Koymen ,  Atul Maharshi

IPC: H04W4/00 ,  H04W72/04 ,  H04W24/02 ,  H04B7/0408 ,  H04L5/00 ,  H04L27/26

Abstract: In wireless communication systems that support 5th generation wireless systems (5G) or New Radio (NR) protocols, subframes used for communication may have different numerology options. Numerology options may refer to the characteristics of the subframe such as a tone spacing within each symbol of the subframe, a symbol duration for each symbol of the subframe, a number of symbols in the subframe, etc. A subframe may include a control channel (e.g., the Physical Downlink Control Channel (PDCCH)) and a data channel (e.g., the Physical Downlink Shared Channel (PDSCH)). In an aspect, the control channel and the data channel within the subframe may have different numerologies. As such, a need exists to signal the numerology of the subframe to users and to determine whether and how to multiplex the control channel and the data channel into the subframe.

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：US10159089B2

公开(公告)日：2018-12-18

申请号：US15077587

申请日：2016-03-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Durga Prasad Malladi ,  Srinivas Yerramalli

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

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may determine whether a source carrier for an uplink grant is in licensed or unlicensed spectrum and then select a listen-before-talk (LBT) procedure for accessing a shared spectrum channel. For example, the device may select one range parameter (e.g., q value) for a backoff procedure of a clear channel assessment (CCA) if the source carrier is in unlicensed spectrum, and a different (e.g., larger) range parameter if the source carrier is in licensed spectrum. In some cases, the device may operate in a stand-alone operating mode and the source carrier may be identified based on the mode. In some cases, the device may receive signaling that indicates a carrier configuration, and may select the LBT procedure based on whether a carrier configured on unlicensed spectrum is self-scheduled or cross-carrier scheduled.

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：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.