公开(公告)号：US10548020B2

公开(公告)日：2020-01-28

申请号：US15810963

申请日：2017-11-13

Applicant: QUALCOMM Incorporated

Inventor： Mostafa Khoshnevisan ,  Farhad Meshkati ,  Tamer Kadous ,  Mehmet Yavuz ,  Chirag Sureshbhai Patel

IPC: H04W16/14 ,  H04L1/16 ,  H04B1/7097 ,  H04W88/08 ,  H04L5/00 ,  H04W72/04 ,  H04W84/12

Abstract: One method includes identifying a listen-before-talk (LBT) silencing criterion between each pair of wireless devices in a plurality of wireless devices; dividing the plurality of wireless devices into a plurality of independent sets based at least in part on the identified LBT silencing criterions; determining, for a location, an aggregated interference value for each independent set; determining an aggregated interference value for the location based at least in part on the determined aggregated interference values for each independent set; and selectively adjusting a wireless communication parameter of at least one of the wireless devices to alter the aggregated interference value for the location.

公开(公告)号：US20190394790A1

公开(公告)日：2019-12-26

申请号：US16445001

申请日：2019-06-18

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Arumugam Chendamarai Kannan ,  Yisheng Xue ,  Xiaoxia Zhang ,  Tamer Kadous

IPC: H04W72/12 ,  H04W72/10 ,  H04W72/04 ,  H04W74/08 ,  H04W52/28

Abstract: Sharing between priority access license (PAL) and general authorized access (GAA) communications in 5G new radio (NR) systems in 3.5 GHz Spectrum Access System (SAS)/License Shared Access (LSA) operations is disclosed. A resource configuration may be defined that identifies a plurality of sound reference signal (SRS) resources including at least a sounding set of SRS resources and a coexistence set of SRS resources. When communication may occur between PAL entities, a base station transmits a trigger signal to a served UE. The UP transmits an SRS in response to the trigger signal using the coexistence set of SRS resources. The SRS over the coexistence set of resources may reserve communication on the shared communication channel.

公开(公告)号：US20190386737A1

公开(公告)日：2019-12-19

申请号：US16531538

申请日：2019-08-05

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/26 ,  H04W16/24 ,  H04W36/06 ,  H04W48/18 ,  H01Q1/24 ,  H04W8/00 ,  H04W72/08 ,  H04B7/0491 ,  H04W16/14 ,  H04B7/06 ,  H04W36/30 ,  H04W4/70

Abstract: Described techniques provide for switching a user equipment (UE) between different coverage enhancement (CE) modes, such as between a non-CE mode and a CE mode. A UE may determine that a CE mode switch is to be performed and may initiate the mode switching. The UE may compare signal qualities of signals from one or more base stations against one or more threshold values and determine that a switch from a CE mode to a non-CE mode, or from a non-CE to CE mode, is to be performed. In some cases, a UE may be in idle mode and switch between CE modes, or may perform a cell reselection to a different base station. In other cases, a UE may be in connected mode and may declare a radio link failure to initiate a mode switch. A base station may initiate mode switching based on radio link monitoring of UEs.

公开(公告)号：US10511987B2

公开(公告)日：2019-12-17

申请号：US16005558

申请日：2018-06-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W24/10 ,  H04W72/04 ,  H04W4/70 ,  H04L5/00

Abstract: Various features related to eMTC-U deployment are described. In an aspect of the disclosure, an apparatus (e.g., a base station) maybe configured to select a subset of non-anchor channels from a set of available non-anchor channels, where the subset of non-anchor channels may correspond to a bandwidth within an unlicensed band. The apparatus maybe further configured to transmit information indicating the subset of non-anchor channels via an anchor channel. In some configurations, the subset of non-anchor channels maybe selected based on channel measurements performed by the base station or a UE. In one aspect, a UE may receive, from a base station via an anchor channel, information indicating a subset of non-anchor channels selected from a set of available non-anchor channels. The UE may transmit data on one or more non-anchor channels of the subset of non-anchor channels.

公开(公告)号：US10511399B2

公开(公告)日：2019-12-17

申请号：US15873441

申请日：2018-01-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Tamer Kadous ,  Juan Montojo ,  Xiao feng Wang ,  Sony Akkarakaran

IPC: H04J11/00 ,  H04W48/12 ,  H04L5/00 ,  H04W72/12

Abstract: User equipment associated with a legacy network may utilize a bottom-to-top search technique to identify relevant control channel samples. Generating a control channel that is configured for the bottom-to-top search technique may lead to poor performance in a single-carrier waveform, which may be disadvantageous as networks move toward New Radio. In some aspects, described herein, a base station generates a control channel that is configured to minimize gaps in the control channel, and a user equipment performs a top-to-bottom search technique to identify relevant control channel samples. By using the top-to-bottom search technique, degradation of single-carrier waveforms is reduced and efficiency is improved.

公开(公告)号：US10484959B2

公开(公告)日：2019-11-19

申请号：US15985061

申请日：2018-05-21

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  G01S5/02 ,  G01S5/10 ,  H04W64/00 ,  H04B1/7143 ,  H04W48/16

Abstract: Methods, systems, and devices for wireless communication that support positioning techniques are described. One method may include receiving a positioning reference signal (PRS) configuration; receiving a plurality of PRS transmissions over a shared radio frequency spectrum from a plurality of base stations; and transmitting a measurement report of the PRS transmissions. The PRS transmissions may be received according to the PRS configuration. Another method may include receiving a discovery reference signal (DRS) transmission from a first base station; decoding a cell identifier of the first base station based on the DRS transmission; determining timing information of the first base station based on the DRS transmission; and transmitting a measurement report of the DRS transmission to a second base station.

公开(公告)号：US10476781B2

公开(公告)日：2019-11-12

申请号：US15659592

申请日：2017-07-25

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Juan Montojo ,  Tamer Kadous ,  Junyi Li ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo ,  Siddhartha Mallik

IPC: H04L12/761 ,  H04L12/18 ,  H03M13/09 ,  H04B17/318 ,  H04B17/24 ,  H04W52/54 ,  H04W52/34 ,  H04W52/24 ,  H04B7/06 ,  H04W72/12 ,  H04W76/22 ,  H04L12/24 ,  H04W72/04 ,  H04W52/56 ,  H04W52/14 ,  H04W52/16 ,  H04W52/38 ,  H04W52/42 ,  H04W52/50 ,  H04B7/216 ,  H04L5/00 ,  H04W72/08 ,  H04W24/08 ,  H04W24/02 ,  H04W76/19 ,  H04W24/04 ,  H04W48/08 ,  H04W92/20 ,  H04L1/18 ,  H04L1/00

Abstract: Various aspects of the disclosure relate to feedback for independent links. For example, channel state feedback may be based on the channel state of multiple links. In some aspects, the independent links may involve a first device (e.g., a user equipment) communicating via different independent links with different devices (e.g., transmit receive points (TRPs) or sets of TRPs). In some scenarios, channel state information (CSI) feedback may take into account the CSI-reference signals (CSI-RSs) from multiple links. For example, CSI feedback may be based on CSI-RSs from multiple links if the antenna sub-arrays for the links are close to one another. As another example, a decision as to whether CSI feedback is to be based on CSI-RSs from multiple links may depend on channel conditions.

公开(公告)号：US20190334666A1

公开(公告)日：2019-10-31

申请号：US16394518

申请日：2019-04-25

Applicant: QUALCOMM Incorporated

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

IPC: H04L5/00 ,  H04W16/14 ,  H04W48/08 ,  H04W74/00 ,  H04W72/14 ,  H04W74/08

Abstract: Wireless communications systems and methods related to providing frequency diversity for communications in an unlicensed spectrum are provided. A first wireless communication device communicates, with a second wireless communication device, an opportunistic frequency-switching configuration for a first frequency band and a second frequency band. The first frequency band and the second frequency band are shared by a first network operating entity and a second network operating entity. The first wireless communication device communicates, with the second wireless communication device, a first communication signal in a first frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device switches from the first frequency band to a second frequency band based on the opportunistic frequency-switching configuration. The first wireless communication device communicates, with the second wireless communication device after the switching, a second communication signal in the second frequency band based on the opportunistic frequency-switching configuration.

公开(公告)号：US20190334577A1

公开(公告)日：2019-10-31

申请号：US16385943

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04B1/7143 ,  H04B1/7156 ,  H04B1/7136 ,  H04L27/26

Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.

公开(公告)号：US20190312763A1

公开(公告)日：2019-10-10

申请号：US16351302

申请日：2019-03-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04L27/10 ,  H04L1/00 ,  H04J13/00 ,  H04L27/26

Abstract: Flexible waveform synthesis is disclosed for new radio (NR) shared spectrum (NR-SS) networks. In order to accommodate variable transmission resources, a transmitter may construct an M×N grid to model a resource element (RE) map of transmission resources available to the transmitter within a shared communication channel, where M corresponds to a number of symbols for a scheduled physical signal and N corresponds to a number of tones of a transmission bandwidth for the transmitter. The transmitter may then map the M×N grid to the RE map and puncture one or more REs associated with the subbands unavailable for transmission in the transmission resources. The transmitter may then transmit a transmission according to the unpunctured REs of the RE map.