公开(公告)号：US10123323B2

公开(公告)日：2018-11-06

申请号：US14862997

申请日：2015-09-23

Applicant: QUALCOMM Incorporated

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

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

Abstract: Various aspects described herein relate to communicating using dynamic uplink and downlink transmission time interval (TTI) switching in a wireless network. A notification can be received from a network entity of switching a configurable TTI from downlink communications to uplink communications. The configurable TTI can be one of a plurality of TTIs in a frame structure that allows dynamic switching of configurable TTIs between downlink and uplink communications within a frame. Additionally, uplink communications can be transmitted to the network entity during the configurable TTI based at least in part on the notification.

公开(公告)号：US10122429B2

公开(公告)日：2018-11-06

申请号：US14995453

申请日：2016-01-14

Applicant: QUALCOMM Incorporated

Inventor： Jelena Damnjanovic ,  Wanshi Chen ,  Peter Gaal ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04B7/06 ,  H04W24/10 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices are described for wireless communication in a system that supports enhanced carrier aggregation (eCA). An eCA configuration with a large number of component carriers (CCs) may include CCs grouped into channel state information (CSI) reporting groups. Channel state reports for the CCs in each group may be reported together. In some cases, individual CC reports may be multiplexed into a single report, and in other cases a single channel state report may contain information related to each CC in the group. The combined reports may be transmitted over an uplink control channel or an uplink data channel, or both. Collisions between reports may be resolved based on the reporting type of the groups or the serving cell indices of the CCs in the group.

公开(公告)号：US10091788B2

公开(公告)日：2018-10-02

申请号：US15230042

申请日：2016-08-05

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Qingsi Wang ,  Maarten Menzo Wentink ,  Marco Papaleo ,  Srinivas Yerramalli ,  Onkar Jayant Dabeer

IPC: H04W72/04 ,  H04W74/02 ,  H04W74/08 ,  H04L5/00 ,  H04W16/14 ,  H04W72/12 ,  H04W88/10 ,  H04W88/02

Abstract: Techniques for adjusting a contention window (CW) for transmissions in a shared radio frequency spectrum band may include identifying a number of nodes attempting to transmit using a channel of a shared radio frequency spectrum band and determining a target CW based on the number of nodes attempting to transmit. A new CW value may then be determined based on a prior CW value and the target CW value, and a listen-before-talk (LBT) procedure (e.g., a clear channel assessment (CCA)) to access the channel of the shared radio frequency spectrum band may be performed to access the channel.

公开(公告)号：US20180262290A1

公开(公告)日：2018-09-13

申请号：US15979234

申请日：2018-05-14

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Joseph Paul Odenwalder ,  Stein Arne Lundby ,  Yongbin Wei

IPC: H04J13/12 ,  H04L5/00 ,  H04J11/00 ,  H04J13/00 ,  H04L1/00 ,  H04L1/16 ,  H04B1/707

CPC classification number: H04L5/0057 ,  H04B1/707 ,  H04J11/00 ,  H04J13/0048 ,  H04J13/12 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0057 ,  H04L1/1607 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/006 ,  H04L5/0094

Abstract: Multiple full channel quality indication (CQI) reports indicative of received signal quality for multiple carriers in wireless communication are transmitted in multiple time intervals of a CQI channel.

公开(公告)号：US20180227806A1

公开(公告)日：2018-08-09

申请号：US15948764

申请日：2018-04-09

Applicant: QUALCOMM Incorporated

Inventor： Srinivasa Yerramalli ,  Tao Luo ,  Siddhartha Mallik ,  Xiaoxia Zhang ,  Aleksandar Damnjanovic ,  Kiran Somasundaram

IPC: H04W28/26 ,  H04W74/08 ,  H04W16/14 ,  H04W72/04 ,  H04W72/12

CPC classification number: H04W28/26 ,  H04W16/14 ,  H04W72/0446 ,  H04W72/1215 ,  H04W74/08

Abstract: Techniques are described for wireless communication. A first method includes contending for access to a first channel of a radio frequency spectrum, and transmitting, upon winning contention for access to the first channel, a first channel reservation indication. The contending may be performed by a first node operating according to a first radio access technology. The first channel reservation indication may be understood by a second node operating according to a second radio access technology.

公开(公告)号：US09986518B2

公开(公告)日：2018-05-29

申请号：US14755521

申请日：2015-06-30

Applicant: QUALCOMM Incorporated

Inventor： Yongbin Wei ,  Durga Prasad Malladi ,  Aleksandar Damnjanovic ,  Peter Gaal

IPC: H04W56/00 ,  H04L5/00 ,  H04J11/00 ,  H04L27/00 ,  H04L27/26 ,  H04W16/14 ,  H04W72/12 ,  H04W74/08 ,  H04W88/02 ,  H04W88/08

CPC classification number: H04W56/001 ,  H04J11/0069 ,  H04L5/0007 ,  H04L27/0006 ,  H04L27/2655 ,  H04W16/14 ,  H04W72/1215 ,  H04W74/0808 ,  H04W88/02 ,  H04W88/08

Abstract: Techniques are described for wireless communication. A first method includes receiving a primary synchronization signal (PSS) from a base station over an unlicensed radio frequency spectrum band. The PSS may be received on adjacent orthogonal frequency division multiplexing (OFDM) symbols of a first subframe of a downlink transmission. A user equipment (UE) may be synchronized with the base station based at least in part on the received PSS. A second method includes receiving a channel usage indicator over an unlicensed radio frequency spectrum band, and determining at least one OFDM symbol to monitor based on a time associated with the received channel usage indicator. A PSS may then be received from a base station over the unlicensed radio frequency spectrum band during the determined at least one OFDM symbol, and a UE may be synchronized with the base station based at least in part on the received PSS.

公开(公告)号：US09985762B2

公开(公告)日：2018-05-29

申请号：US15633621

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04 ,  H04W56/00 ,  H04W8/00

CPC classification number: H04W8/005 ,  H04L5/0048 ,  H04L5/0073 ,  H04W56/001 ,  H04W56/0015 ,  H04W72/0446 ,  H04W72/082

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：US20180145810A1

公开(公告)日：2018-05-24

申请号：US15867479

申请日：2018-01-10

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Peter Gaal ,  Tao Luo ,  Durga Prasad Malladi ,  Yongbin Wei

IPC: H04L5/00 ,  H04W56/00 ,  H04W74/00 ,  H04W72/08 ,  H04W72/04 ,  H04W76/12 ,  H04W24/08 ,  H04W76/27 ,  H04W88/08

Abstract: Techniques are described for wireless communication. A first method may include receiving at a user equipment (UE) over an unlicensed radio frequency spectrum band an indication of a time window associated with a transmission of a synchronization signal, and monitoring the unlicensed radio frequency spectrum band during the time window to receive a synchronization signal from a base station. A second method may include transmitting an indication of a time window associated with a transmission of a synchronization signal; performing a plurality of clear channel assessments (CCAs) on an unlicensed radio frequency spectrum band during the time window; and transmitting the synchronization signal over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based at least in part on a result of at least one of the CCAs.

公开(公告)号：US09973293B2

公开(公告)日：2018-05-15

申请号：US15160879

申请日：2016-05-20

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Joseph Paul Odenwalder ,  Stein Arne Lundby ,  Yongbin Wei

IPC: H04J13/12 ,  H04J13/00 ,  H04L5/00 ,  H04L1/00 ,  H04J11/00 ,  H04B1/707 ,  H04L1/16

CPC classification number: H04J13/12 ,  H04B1/707 ,  H04J11/00 ,  H04J13/0048 ,  H04L1/0026 ,  H04L1/0029 ,  H04L1/0057 ,  H04L1/1607 ,  H04L5/0007 ,  H04L5/0016 ,  H04L5/0044 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04L5/006 ,  H04L5/0094

Abstract: Multiple full channel quality indication (CQI) reports indicative of received signal quality for multiple carriers in wireless communication are transmitted in multiple time intervals of a CQI channel.

公开(公告)号：US09967802B2

公开(公告)日：2018-05-08

申请号：US14736867

申请日：2015-06-11

Applicant: QUALCOMM Incorporated

Inventor： Durga Prasad Malladi ,  Yongbin Wei ,  Tao Luo ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04W48/08 ,  H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04W48/10

CPC classification number: H04W48/08 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0053 ,  H04W16/14 ,  H04W48/10 ,  H04W48/12 ,  H04W74/08

Abstract: Techniques for transmitting and receiving wireless communications over an unlicensed radio frequency spectrum band are disclosed, including techniques for transmitting and receiving system information blocks over the unlicensed radio frequency spectrum band, techniques for gaining access to the unlicensed radio frequency spectrum band by performing extended clear channel assessments (ECCAs), techniques for transmitting and receiving synchronization signals and reference signals over the unlicensed radio frequency spectrum band, techniques for identifying starting times of downlink transmissions over the unlicensed radio frequency spectrum band, techniques for transmitting and receiving clear channel assessment (CCA)-exempt transmissions over the unlicensed radio frequency spectrum band, techniques for performing random access over the unlicensed radio frequency spectrum band, and techniques for dynamically modifying a transmission mode over the unlicensed radio frequency spectrum band.