公开(公告)号：US11051193B2

公开(公告)日：2021-06-29

申请号：US15215148

申请日：2016-07-20

Applicant: Qualcomm Incorporated

Inventor： Renqiu Wang ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Yongbin Wei

IPC: H04W24/10 ,  H04W4/70 ,  H04L5/00

Abstract: Aspects of the present disclosure provided techniques that for wireless communications by a base station (BS). An exemplary method, performed by a base station, generally includes identifying an operating state of a user equipment that communicates with the BS in at least one narrowband region, determining, based on the operating state, one or more operating parameters of a configurable measurement procedure whereby the user equipment (UE) tunes away from the narrowband region to measure signals transmitted from other BSs, and configuring the UE to perform the measurement procedure in accordance with the determined operating parameters.

公开(公告)号：US20210099935A1

公开(公告)日：2021-04-01

申请号：US17118291

申请日：2020-12-10

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Jun Wang ,  Ravindra Manohar Patwardhan ,  Abhijit Khobare ,  Ajay Gupta ,  Madhavan Srinivasan Vajapeyam

IPC: H04W36/08 ,  H04W36/02 ,  H04W76/30 ,  H04W76/20 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive data from both a source base station and a target base station during handover. For example, the UE may refrain from resetting or reestablishing media access control (MAC) and packet data convergence protocol (PDCP) layer configurations until after a successful access procedure is performed with the target base station. In some cases, a single radio link control (RLC)/PDCP stack may be used during handover procedures. A source base station may, for example, forward data to a target base station after receiving a handover execution message. A UE may identify and resolve any duplicate data sent by both base stations during the transition. Additional signaling may be used (e.g., during the radio resource control (RRC) configuration) to indicate that a UE supports dual link handover.

公开(公告)号：US10833826B2

公开(公告)日：2020-11-10

申请号：US16272407

申请日：2019-02-11

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 ,  H04J11/00 ,  H04L27/26 ,  H04W56/00

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：US10805855B2

公开(公告)日：2020-10-13

申请号：US16833239

申请日：2020-03-27

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Madhavan Srinivasan Vajapeyam ,  Hao Xu ,  Wanshi Chen ,  Peter Gaal

IPC: H04W36/36 ,  H04W4/70 ,  H04W48/20 ,  H04W72/08 ,  H04L5/00 ,  H04W36/00 ,  H04W72/04 ,  H04H20/38

Abstract: Cell selection techniques are provided for network access to cells that may employ one or more coverage enhancement techniques. A user equipment (UE), which may be a machine type communication (MTC) device, upon initial acquisition or upon wakeup may measure a reference signal received power (RSRP), reference signal received quality (RSRQ), or both, and determine a cell selection value based at least in part on the RSRP, RSRQ, or a combination thereof. The cell selection value may be determined based on an offset, which may be selected based on a measurement accuracy capability of the UE. UE sequential access attempts, neighbor cell list information that may include coverage enhancement of neighboring cells transmissions, and cell re-selection measurement frequency adjustments are also described.

公开(公告)号：US10708906B2

公开(公告)日：2020-07-07

申请号：US14532714

申请日：2014-11-04

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04 ,  H04L1/18 ,  H04L5/14 ,  H04L27/26 ,  H04L12/26 ,  H04W16/32 ,  H04W74/08 ,  H04J11/00

Abstract: Methods, systems, and devices are described for hierarchical communications and low latency support within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing. In some examples symbols of different duration may be multiplexed such that they different symbol durations coexist.

公开(公告)号：US10708903B2

公开(公告)日：2020-07-07

申请号：US16377857

申请日：2019-04-08

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Hao Xu

IPC: H04W72/04 ,  H04W76/28 ,  H04W4/70 ,  H04W52/02 ,  H04L5/00 ,  H04L1/18

Abstract: In narrowband communication, channels may use repetitions in multiple subframes. SPS and DRX for the narrowband communication may not accommodate such repetitions, because repetitions for a channel may fall only partially within a DRX ON duration. An apparatus addresses this problem by determining a DRX ON duration, determining a set of subframes carrying a narrowband PDCCH candidate and determining that the DRX ON duration at least partially overlaps with the set of subframes of the narrowband PDCCH. The apparatus then refrains from decoding the first narrowband PDCCH candidate, decodes the first narrowband PDCCH candidate, or extends the DRX ON duration to include the set of subframes entirely and decoding the first narrowband PDCCH candidate carried in the set of subframes in the extended DRX ON duration. The apparatus may also determine DRX configuration parameters based on parameters of bundled channels, and handle invalid subframes for an SPS grant.

公开(公告)号：US10701692B2

公开(公告)日：2020-06-30

申请号：US15199214

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Vikas Jain ,  Kiran Kumar Somasundaram ,  Aleksandar Damnjanovic ,  Fang Chen

IPC: H04W72/04 ,  H04J11/00 ,  H04L5/00 ,  H04L29/12 ,  H04W8/08 ,  H04W28/02 ,  H04W72/14 ,  H04W84/12 ,  H04W88/02

Abstract: Techniques are described for wireless communication. One method includes identifying a priority parameter associated with data to be transmitted on an uplink carrier; selecting, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and transmitting the selected type of message.

公开(公告)号：US10674407B2

公开(公告)日：2020-06-02

申请号：US15969516

申请日：2018-05-02

Applicant: QUALCOMM Incorporated

Inventor： Osok Song ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Parag Arun Agashe ,  Jaber Mohammad Borran ,  Madhavan Srinivasan Vajapeyam ,  Stefan Geirhofer

IPC: H04W28/16 ,  H04W92/20

Abstract: Methods and apparatus for supporting adaptive resource negotiation between evolved node Bs (eNBs) for enhanced inter-cell interference coordination (eICIC) are provided. This resource negotiation may occur via a network backhaul between the eNBs or, in some cases, using over-the-air messages (OAMs). For certain aspects, a first eNB may propose its adaptive resource partitioning information (ARPI) to a second eNB, where the second eNB may accept or reject the proposed resource partitioning. If the second eNB accepts the proposed partitioning, the second eNB may schedule resources, such as subframes, based on the accepted partitioning.

公开(公告)号：US10652768B2

公开(公告)日：2020-05-12

申请号：US15132729

申请日：2016-04-19

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Madhavan Srinivasan Vajapeyam ,  Peter Gaal

IPC: H04W4/00 ,  H04W24/08 ,  H04W72/04 ,  H04W4/70 ,  H04W4/06 ,  H04W48/08 ,  H04W74/00

Abstract: Aspects of the present disclosure provided techniques that may be applied in systems to allow for communication over a control channel utilizing a relatively narrowband (e.g., six physical resource blocks) based search space. An exemplary method, performed, for example, by a machine type communication (MTC) UE, generally includes identifying, within a subframe, a first search space to monitor for a control channel that occupies a first number of physical resource blocks (PRBs) that represents a narrowband within a system bandwidth comprising a plurality of narrowbands and monitoring at least the first search space for the control channel, wherein the control channel comprises broadcast control information.

公开(公告)号：US20200092887A1

公开(公告)日：2020-03-19

申请号：US16692139

申请日：2019-11-22

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Vikas Jain ,  Kiran Kumar Somasundaram ,  Aleksandar Damnjanovic ,  Fang Chen

IPC: H04W72/04 ,  H04W72/12 ,  H04J11/00 ,  H04L5/00 ,  H04L29/12 ,  H04W8/08 ,  H04W28/02 ,  H04W72/14

Abstract: Techniques are described for wireless communication. One method includes identifying a priority parameter associated with data to be transmitted on an uplink carrier; selecting, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and transmitting the selected type of message.