公开(公告)号：US10469185B2

公开(公告)日：2019-11-05

申请号：US15629483

申请日：2017-06-21

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Ravi Teja Sukhavasi ,  Makesh Pravin John Wilson ,  Kiran Kumar Somasundaram ,  Onkar Jayant Dabeer ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Aleksandar Damnjanovic

IPC: H04W4/00 ,  H04B17/309 ,  H04W16/14 ,  H04W72/00 ,  H04W74/08 ,  H04W72/12

Abstract: The present disclosure, for example, relates to one or more techniques for scaling the bandwidth of a carrier. Available sub-channels of an unlicensed radio frequency spectrum band may be determined, and the available sub-channels may be included in the carrier. The available sub-channels may be adjacent or non-adjacent sub-channels. The bandwidth of the carrier may be determined according to which sub-channels are included in the carrier. In this way, the bandwidth of the carrier may be scaled according to the available sub-channels in the unlicensed radio frequency spectrum band.

公开(公告)号：US10462713B2

公开(公告)日：2019-10-29

申请号：US14866546

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Durga Prasad Malladi ,  Madhavan Srinivasan Vajapeyam ,  Ozcan Ozturk ,  Onkar Jayant Dabeer ,  Wanshi Chen ,  Hao Xu

IPC: H04W36/00 ,  H04W92/20

Abstract: Techniques for handover procedure management are described herein. An example method may include monitoring, at a target base station, reference signal information associated with a UE based on a reference signal configuration of the UE received by the target base station from a source base station. Additionally, the example method may include estimating, at the target base station, timing information for the UE based on the reference signal information. Further, the example method may include transmitting, by the target base station, the timing information to the source base station, where the source base station provides the timing information to the UE for handover to the target base station.

公开(公告)号：US10455614B2

公开(公告)日：2019-10-22

申请号：US14584149

申请日：2014-12-29

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 ,  H04L5/00 ,  H04W56/00 ,  H04W74/08 ,  H04L5/14 ,  H04L27/26

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：US10455558B2

公开(公告)日：2019-10-22

申请号：US15498246

申请日：2017-04-26

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Peter Gaal ,  Hao Xu ,  Wanshi Chen

IPC: H04W72/04 ,  H04L5/00 ,  H04W8/22 ,  H04W52/14 ,  H04W52/44 ,  H04W52/48

Abstract: Aspects of the present disclosure provide procedures for handling interruption due to carrier switching for sounding reference signal transmission and for a carrier switching capability indication. A method by a user equipment (UE) is provided, generally including interrupting communication on a first component carrier (CC) to switch between the first CC and a second CC to transmit an uplink reference signal on the second CC and adjusting one or more parameters of an uplink transmission on the first component carrier to account for the interrupting communication on the second CC. In aspects, another method is provided in which, a UE receives a query from a base station for switching capability information of the UE for one or more carrier aggregation (CA) configurations and, in response to the query, provides an indication to the BS of the switching capability information of the UE for the one or more CA configurations.

公开(公告)号：US10454541B2

公开(公告)日：2019-10-22

申请号：US15470353

申请日：2017-03-27

Applicant: QUALCOMM Incorporated

Inventor： Jay Kumar Sundararajan ,  Wanshi Chen ,  Haitong Sun ,  Jing Jiang ,  Hao Xu ,  Tingfang Ji

IPC: H04B7/0456 ,  H04B17/345 ,  H04B7/06 ,  H04L5/00 ,  H04W72/04 ,  H04B7/0413

Abstract: Various aspects described herein relate to dynamic uplink antenna port management. A user equipment (UE) may receive reference signal configuration information from a base station. The UE may configure one or more uplink antenna ports based on the received reference signal configuration information and transmit one or more reference signals to the base station on the one or more uplink antenna port. The UE may receive uplink configuration information for one or more data channels and/or one or more control channels. The UE may configure one or more uplinks antenna ports based on the uplink configuration information and may transmit one or more uplink signals on the one or more data channels and/or one or more control channels. The uplink configuration information may be based at least one the one or more reference signals transmitted to the base station.

公开(公告)号：US10454520B2

公开(公告)日：2019-10-22

申请号：US15670697

申请日：2017-08-07

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Hao Xu ,  Alberto Rico Alvarino ,  Peter Gaal ,  Masato Kitazoe ,  Sharad Sambhwani

IPC: H04B1/713 ,  H04W76/27 ,  H04L1/00 ,  H04W4/70 ,  H04L5/00 ,  H04W68/00 ,  H04B1/7156 ,  H04W88/06 ,  H04W68/02 ,  H04W68/04 ,  H04W74/08

Abstract: Coverage enhancements and coverage mode switching related optimizations are discussed for user equipments (UEs) that may switch between various coverage extension (CE) and non-CE modes of operation. In such enhancements, paging uncertainty and delays may be reduced by sending pages either simultaneously or using historical information over multiple coverage modes available to UEs. Random access procedures may be improved by providing CE mode random access procedures that are available when normal mode random access attempts fail and before declaring radio link failure. Additional aspects include improvements for more advanced UEs to improve coverage within normal mode operations by leveraging techniques used for narrowband CE mode operations, including transmission repetition and gapless transmission scheduling over hopped narrowband frequencies.

公开(公告)号：US10448351B2

公开(公告)日：2019-10-15

申请号：US14227279

申请日：2014-03-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W56/00 ,  H04W72/12 ,  H04W72/04

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for employing a neighboring cell's assistance information for interference mitigation (e.g., by conveying the information to a user equipment). A base station (BS) may determine assistance information for a neighboring cell and convey it to a user equipment (UE). A UE may receive assistance information for a neighboring cell and use that information for performing interference cancellation or suppression on received signals. The UE may receive the assistance information from a serving cell or a non-serving cell. The assistance information may be valid for a particular transmission instance, for a known period of time, or until updated by a BS.

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：US10425971B2

公开(公告)日：2019-09-24

申请号：US15600636

申请日：2017-05-19

Applicant: QUALCOMM Incorporated

Inventor： Hung Ly ,  Wanshi Chen ,  Tingfang Ji ,  Hao Xu ,  Haitong Sun ,  Heechoon Lee ,  Kambiz Azarian Yazdi

IPC: H04W74/08 ,  H04L5/00

Abstract: A wireless communications of a contention-based access procedure that reduces collision of reference signals (e.g., when multiple devices select a same reference signal) may support a relatively high user capacity. For a contention-based access procedure, a user equipment may select at least two reference signals and transmit those at least two reference signals in association with a payload to a base station. The payload may be demodulated using each of the at least two reference signals. Thus, if collision occurs with a first reference signal of the at least two reference signals, the payload may still be demodulated using a second reference signal of the at least two reference signals. A base station may demodulate the payload using either first reference signal or the second reference signal. The base station may transmit, to the wireless communications device, a response based on the demodulated payload.

公开(公告)号：US10425923B2

公开(公告)日：2019-09-24

申请号：US15440947

申请日：2017-02-23

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Wei Zeng ,  Jing Jiang ,  Tingfang Ji

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/26 ,  H04L12/24 ,  H04L27/00

Abstract: Methods, systems, and devices for wireless communication are described that provide for uplink channel multiplexing and waveform selection. Uplink channels to be transmitted from one or more user equipment (UEs) to a base station are multiplexed together or separately into an uplink subframe. Each UE is capable of using different waveforms to transmit different channels. Reference signals are communicated according to an RS pattern, which is symmetric across uplink and downlink channels.