公开(公告)号：US10477409B2

公开(公告)日：2019-11-12

申请号：US16194168

申请日：2018-11-16

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Ravi Teja Sukhavasi

IPC: H04W16/14 ,  H04L5/00

Abstract: Methods and apparatus for wireless communication are described. A method may include receiving at a user equipment (UE) a number of allocated interlaces for an uplink transmission over a shared spectrum, each of which may include a plurality of non-contiguous resource blocks (RB) of the shared spectrum. In some cases, the number of allocated interlaces is unsupported by joint interlace precoding hardware of the UE and the allocated interlaces may be partitioned into subsets of interlaces which may be a size supported by the joint interlace precoding hardware. Reference signals may be generated for the RBs of the allocated interlaces according to a reference signal sequence based on an ordering of the RBs for the allocated interlaces within the shared spectrum.

公开(公告)号：US10455457B2

公开(公告)日：2019-10-22

申请号：US15985048

申请日：2018-05-21

Applicant: QUALCOMM Incorporated

Inventor： Ahmed Kamel Sadek ,  Yisheng Xue ,  Siddhartha Mallik ,  Tamer Kadous ,  Xiaoxia Zhang ,  Taesang Yoo ,  Michael Mingxi Fan ,  Aleksandar Damnjanovic ,  Yongbin Wei ,  Jing Sun

IPC: H04W28/26 ,  H04L5/00 ,  H04B7/06 ,  H04W52/24 ,  H04W16/14 ,  H04B17/336 ,  H04W74/08 ,  H04W84/04 ,  H04L5/14 ,  H04L27/00

Abstract: A medium reservation framework is disclosed for coexistence of coordinated and uncoordinated wireless networks in licensed spectrum and shared spectrum. The proposed medium reservation framework organically takes into account operating regimes with different numbers of Tx/Rx antennas per node, provides flexibility in trading off medium contention aggressiveness and power saving, leverages the inherent synchronization nature of NR, and covers both coordinated and uncoordinated operation scenarios. Various aspects of the medium reservation framework may be centered on one or more combinations of some basic building blocks, such as an operation grid, synchronization signals, and reservation messages, such as a reservation request signal (RRQ) and one or more a reservation response signals (RRS).

公开(公告)号：US10432370B2

公开(公告)日：2019-10-01

申请号：US14152820

申请日：2014-01-10

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W72/04

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus may be a UE. The UE identifies properties associated with reference signals of a received payload. The properties associated with reference signals of the received payload may include a reference signal structure and/or a traffic to pilot ratio. The UE determines a payload structure based on the identified properties. Subsequently, the UE decodes the received payload based on the determined payload structure. The UE may receive mapping information indicating a mapping between possible properties associated with reference signals and possible payload structures. The UE may determine the payload structure further based on the received mapping information. The UE may receive the mapping information through a broadcast or RRC signaling.

公开(公告)号：US10425826B2

公开(公告)日：2019-09-24

申请号：US15612588

申请日：2017-06-02

Applicant: QUALCOMM Incorporated

Inventor： Seyed Ali Akbar Fakoorian ,  Xiaoxia Zhang ,  Taesang Yoo ,  Aleksandar Damnjanovic ,  Juan Montojo ,  Siddhartha Mallik

IPC: H04W16/14 ,  H04W28/02 ,  H04W56/00 ,  H04W40/24 ,  H04W88/06 ,  H04W74/08 ,  H04W72/04

Abstract: Wireless communications systems and methods related to autonomous uplink transmission and autonomous downlink transmission in a shared spectrum are provided. A first wireless communication device identifies a transmission opportunity (TXOP) in a shared spectrum shared by a plurality of network operating entities. The first wireless communication device is associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device a first frequency band of the shared spectrum designated for autonomous communication by the first network operating entity during the TXOP. The first wireless communication device communicates, with a second wireless communication device associated with the first network operating entity in the first frequency band, autonomous data during the TXOP.

公开(公告)号：US10419157B2

公开(公告)日：2019-09-17

申请号：US15913739

申请日：2018-03-06

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic ,  Marco Papaleo ,  Rahul Malik ,  Peter Gaal

IPC: H04L1/00 ,  H04W16/14 ,  H04W74/08 ,  H04W88/06 ,  H04L1/18 ,  H04W72/12

Abstract: Techniques are described for wireless communication. A first method includes sensing an indication of first radio access technology (RAT) communications occupying a shared radio frequency spectrum band; and configuring, in response to the sensing, at least one parameter of a second RAT used by a device to contend for access to the band. A second method includes randomly selecting a number from a range of numbers extending between a lower bound and an upper bound; contending for access to a shared radio frequency spectrum band by performing an extended clear channel assessment (ECCA) procedure over a plurality of CCA slots, the plurality of CCA slots including a first number of CCA slots equal to the upper bound; and winning contention for access to the band after determining, while performing the ECCA procedure, that the band is available for a second number of CCA slots equal to the randomly selected number.

公开(公告)号：US10405334B2

公开(公告)日：2019-09-03

申请号：US15295328

申请日：2016-10-17

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Hao Xu ,  Aleksandar Damnjanovic ,  Seyedkianoush Hosseini

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00 ,  H04L5/00 ,  H04B17/336 ,  H04B7/06

Abstract: Various aspects described herein relate to scheduling resources in wireless communications. In one aspect, communications can be established with a plurality of user equipment (UE). A set of the plurality of UEs as having an interference impact on one another that is less than a threshold can be determined. A first UE of the set of the plurality of UEs can be scheduled for downlink communications in a first transmission time interval (TTI), and a second UE of the set of the plurality of UEs can be scheduled for uplink communications in a second TTI that is adjacent in time to the first TTI. In another aspect, uplink communications for the first UE can be scheduled in a portion of the guard period TTI based at least in part on determining a timing advance of the first UE is less than a threshold.

公开(公告)号：US10362575B2

公开(公告)日：2019-07-23

申请号：US15837463

申请日：2017-12-11

Applicant: QUALCOMM incorporated

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

IPC: H04W72/00 ,  H04W72/04 ,  H04L27/26 ,  H04W74/08 ,  H04W72/12

Abstract: Techniques for wireless communications over a shared radio frequency spectrum band, may include techniques for transmitting uplink data transmissions using allocated uplink resources. Allocated uplink resources may include an uplink channel comprising a number of allocated interlaces of resource blocks (RBs) for use by a user equipment (UE). An incoming data stream may be processed and data separated into each of the allocated interlaces of RBs for the UE. Such separation may be through demultiplexing the data stream to obtain data for the allocated interlaces of RBs. The demultiplexed data may be mapped onto associated resource elements associated with the allocated interlaces of RBs, and transmitted. Different types of uplink channels, such as a physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) and/or a physical random access channel (PRACH) may be allocated to interlaces of RBs in one or more subframes of a transmitted radio frame.

公开(公告)号：US10349293B2

公开(公告)日：2019-07-09

申请号：US15098128

申请日：2016-04-13

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Tao Luo ,  Aleksandar Damnjanovic

IPC: H04W24/08 ,  H04W76/27 ,  H04W72/04 ,  H04W72/08 ,  H04W72/14 ,  H04W74/08 ,  H04W24/02 ,  H04W74/00 ,  H04W84/12 ,  H04W88/02 ,  H04W16/14

Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. An eNB determines a CCA parameter for use by a UE in performing a CCA procedure for UL transmission and transmits an indication of the CCA parameter to the UE. The UE receives an indication of the CCA parameter for UL transmission from the eNB and performs the CCA procedure for UL transmission using the indicated CCA parameter. The UE may transmit to the eNB prior to receiving the indication of the CCA parameter. The eNB may use the report in determining the CCA parameter for use by the UE.

公开(公告)号：US10341970B2

公开(公告)日：2019-07-02

申请号：US14866381

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Aleksandar Damnjanovic ,  Peter Gaal

IPC: H04W56/00 ,  H04W74/08 ,  H04L5/00 ,  H04W16/14

Abstract: Techniques are described for wireless communication. A first method includes generating a first type of synchronization signal based at least in part on a first type of transmission in a shared radio frequency spectrum band, and generating a second type of synchronization signal based at least in part on a second type of transmission in the shared radio frequency spectrum band. The second type of synchronization signal is different from the first type of synchronization signal. A second method includes receiving a synchronization signal associated with a type of transmission in a shared radio frequency spectrum band; determining a type of the synchronization signal; and determining one or more cell parameters based at least in part on the synchronization signal.

公开(公告)号：US10341890B2

公开(公告)日：2019-07-02

申请号：US14565085

申请日：2014-12-09

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Tao Luo ,  Peter Gaal ,  Durga Prasad Malladi ,  Srinivas Yerramalli ,  Yongbin Wei ,  Hao Xu ,  Tingfang Ji ,  Naga Bhushan ,  Aleksandar Damnjanovic

IPC: H04W24/10 ,  H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12

Abstract: Channel state information (CSI) feedback in long term evolution (LTE) and LTE-Advanced (LTE-A) networks including contention-based shared unlicensed spectrum is disclosed in which a user equipment (UE) identifies at least one carrier utilizing a contention based radio frequency spectrum. The UE detects a transmission signal indicative of clear channel assessment (CCA) result information for the carrier and determines whether a reference signal for channel state information measurement is present in a subframe based on the detected transmission signal. The UE would transmit a measurement report based on this presence determination of the reference signal.