公开(公告)号：US20210044982A1

公开(公告)日：2021-02-11

申请号：US16949389

申请日：2020-10-28

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Tamer Kadous ,  Yongbin Wei ,  Xiaoxia Zhang ,  Srinivas Yerramalli

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04M1/725 ,  H04W56/00 ,  H04L1/18 ,  H04W84/04

Abstract: Wireless communications systems and methods related to coordinating shared radio resources for spectrum sharing are provided. A spectrum resource control unit allocates a first resource for exclusive access by a first network operating entity in a spectrum. The exclusive access is configured for at least one of a network information communication or a feedback communication. The spectrum resource control unit allocates a second resource in the spectrum for shared access by the first network operating entity and a second network operating entity. The shared access is configured for at least a downlink control information communication. The spectrum resource control unit transmits, to the first network operating entity and the second network operating entity, a configuration indicating the first resource allocated for exclusive access by the first network operating entity and the second resource allocated for shared access by the first network operating entity and the second network operating entity.

公开(公告)号：US10862581B2

公开(公告)日：2020-12-08

申请号：US16258454

申请日：2019-01-25

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04B7/26 ,  H04L5/14 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04B1/713 ,  H04W4/70 ,  H04W16/14

Abstract: Aspects of the disclosure relate to a dynamic, configurable time division duplex (TDD) frame structure for hopping superframes utilized in narrowband Internet of Things (NB-IOT) wireless communication systems. The configurable frame structure includes an anchor segment residing on a plurality of anchor hopping frequencies and a data segment residing on one of a plurality of non-anchor hopping frequencies. The data segment includes a downlink portion, an uplink portion, and a configurable portion between the downlink control portion and the uplink control portion that may be configured to include at least one of downlink information or uplink information.

公开(公告)号：US10862562B2

公开(公告)日：2020-12-08

申请号：US16698049

申请日：2019-11-27

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Srinivas Yerramalli ,  Tamer Kadous ,  Kaushik Chakraborty

IPC: H04B7/06 ,  H04B7/0404 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communications are described that provide for refinement of receive beam beamforming parameters at a user equipment (UE). A UE may transmit two or more signals in an uplink transmission that have different beamforming parameters. A base station receiving the uplink transmission may measure the two or more signals, and identify a first signal of the two or more signals based at least in part on the measuring. The base station may inform the UE of the identified first signal, which the UE may use to set receive beam beamforming parameters for one or more subsequent downlink transmissions.

公开(公告)号：US10827491B2

公开(公告)日：2020-11-03

申请号：US14870543

申请日：2015-09-30

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Srinivas Yerramalli ,  Tao Luo ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Aleksandar Damnjanovic ,  Hao Xu ,  Wanshi Chen ,  Shimman Arvind Patel ,  Xiaoxia Zhang

IPC: H04W72/04 ,  H04L5/00 ,  H04L27/00 ,  H04W88/02

Abstract: Techniques are described for wireless communication. A first method includes receiving from a base station an indication of a set of one or more uplink interlaces of an unlicensed radio frequency spectrum band allocated for a sounding reference signal, and transmitting the sounding reference signal for a user equipment (UE) over the indicated set of one or more uplink interlaces of the unlicensed radio frequency spectrum band. A second method includes receiving an indication of an interlace of an unlicensed radio frequency spectrum band allocated for a physical uplink control channel (PUCCH) transmission, and transmitting a scheduling request and a buffer status report over the indicated interlace.

公开(公告)号：US10756868B2

公开(公告)日：2020-08-25

申请号：US15462356

申请日：2017-03-17

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Jing Sun ,  Alberto Rico Alvarino ,  Srinivas Yerramalli

IPC: H04L5/00 ,  H04W72/04

Abstract: Techniques for wireless communication are described. A method for wireless communication at a user equipment (UE) includes identifying a physical uplink shared channel (PUSCH) to transmit in an uplink pilot time slot (UpPTS) of a subframe, determining whether to transmit uplink control information (UCI) on the PUSCH in the UpPTS, and transmitting the PUSCH in the UpPTS based at least in part on the determining. A method for wireless communication at a network access device includes determining whether to schedule a transmission of UCI on a PUSCH in a UpPTS of a subframe, scheduling the PUSCH in the UpPTS based at least in part on the determining, and transmitting, to a UE, scheduling information for the PUSCH in the UpPTS.

公开(公告)号：US10743287B2

公开(公告)日：2020-08-11

申请号：US15244662

申请日：2016-08-23

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Srinivas Yerramalli ,  Tao Luo

IPC: H04L5/00 ,  H04W72/00 ,  H04W16/14 ,  H04W74/08 ,  H04W74/00 ,  H04W4/06 ,  H04L12/801 ,  H04L12/28 ,  H04W74/04 ,  H04L12/403

Abstract: Techniques are described for wireless communications. One method includes determining a contention window size for a first broadcast transmission or a first multicast transmission on at least one channel of a shared radio frequency spectrum band, where the first broadcast transmission or the first multicast transmission is targeted for a first plurality of UEs, and contending for access to the at least one channel of the shared radio frequency spectrum band for the first broadcast transmission or the first multicast transmission based at least in part on the determined contention window size. In some cases, the first broadcast transmission or the first multicast transmission may be an example of a multipoint transmission, which may include a coordinated multipoint transmission.

公开(公告)号：US20200252923A1

公开(公告)日：2020-08-06

申请号：US16746304

申请日：2020-01-17

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tao Luo ,  Arumugam Chendamarai Kannan ,  Vinay Chande ,  Makesh Pravin John Wilson ,  Sungwoo Park ,  Wooseok Nam

IPC: H04W72/04 ,  H04W74/08 ,  H04W48/08 ,  H04B7/06 ,  H04B7/08

Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently identifying a receive beam for performing a listen before talk (LBT) procedure in an attempt to gain access to a transmission opportunity (TxOP) in a shared radio frequency spectrum. In particular, a wireless device may select a receive beam that corresponds to one or more transmit beams to be used in a TxOP to perform an LBT procedure in an attempt to gain access to the TxOP. In one example, the wireless device may select a receive beam for performing an LBT procedure based on the energy of each of the transmit beams to be used in a TxOP. In another example, the wireless device may select a receive beam for performing an LBT procedure if the receive beam is quasi co-located with each of the transmit beams to be used in a TxOP.

公开(公告)号：US10736112B2

公开(公告)日：2020-08-04

申请号：US16160775

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W72/04 ,  H04L5/00 ,  H04W48/12 ,  H04W76/10 ,  H04W88/08 ,  H04L27/26 ,  H04W88/02 ,  H04L25/03

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless networks (e.g., MulteFire networks), a base station may transmit control information to a user equipment (UE) to enable the UE to access the network and establish a connection with the network. The base station may transmit the control information to the UE in search spaces of an enhanced physical downlink control channel (ePDCCH). In some cases, resources used to transmit control information in a first common search space of the ePDCCH may overlap with resources used to transmit control information in a second common search space of the ePDCCH. In such cases, using the techniques described herein, a base station may encode control information transmitted in the different types of search spaces using different scrambling sequences. As such, a UE may be able to differentiate between the control information transmitted in the different types of common search spaces.

公开(公告)号：US10721774B2

公开(公告)日：2020-07-21

申请号：US15811125

申请日：2017-11-13

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Chih-Hao Liu ,  Tamer Kadous

IPC: H04J3/00 ,  H04W74/08 ,  H04B1/7156 ,  H04W74/00 ,  H04L5/00 ,  H04B1/713 ,  H04W72/04 ,  H04L27/26

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. In one configuration, the apparatus may receive, from a base station, first information associated with one or more resources allocated for at least one PRACH transmission. In one aspect, the one or more resources may be allocated in an unlicensed spectrum. In another aspect, the one or more resources may be allocated based on a multi-tone PRACH bandwidth. The apparatus may also receive second information associated with a frequency hopping configuration from the base station. In one aspect, the frequency hopping configuration may be associated with at least one of the one or more allocated resources or the multi-tone PRACH bandwidth. The apparatus may transmit, to the base station, the at least one PRACH transmission using the one or more allocated resources within the multi-tone PRACH bandwidth and the frequency hopping configuration.

公开(公告)号：US10716129B2

公开(公告)日：2020-07-14

申请号：US16415851

申请日：2019-05-17

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Aleksandar Damnjanovic ,  Kiran Kumar Somasundaram ,  Tao Luo ,  Onkar Jayant Dabeer ,  Durga Prasad Malladi ,  Naga Bhushan ,  Yongbin Wei ,  Peter Gaal ,  Wanshi Chen ,  Anastasios Stamoulis ,  Hao Xu ,  Xiaoxia Zhang

IPC: H04W72/12 ,  H04W74/08 ,  H04B7/08 ,  H04L5/00 ,  H04L29/08 ,  H04W52/54 ,  H04W16/14 ,  H04W76/11

Abstract: Techniques are described for wireless communication. A first method may include inserting, in a first transmission using a first radio access technology (RAT), a channel occupancy identifier for a second transmission using a second RAT. The first method may also include transmitting the first transmission having the channel occupancy identifier over an unlicensed radio frequency spectrum band. A second method may include receiving, at a receiver operated using a first RAT, a channel occupancy identifier for a transmission using a second RAT. The channel occupancy identifier may be received over an unlicensed radio frequency spectrum band. The second method may also include decoding the channel occupancy identifier to identify a backoff period, and refraining from accessing the unlicensed radio frequency spectrum band using the first RAT based at least in part on the identified backoff period.