公开(公告)号：US10277439B2

公开(公告)日：2019-04-30

申请号：US15485800

申请日：2017-04-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Durga Prasad Malladi ,  Seyedkianoush Hosseini ,  Juan Montojo ,  Peter Gaal ,  Taesang Yoo ,  Yongbin Wei

IPC: H04L27/00 ,  H04L1/00 ,  H04L12/931 ,  H04W24/02 ,  H04L27/26 ,  H04L12/935

Abstract: Methods, systems, and devices for wireless communication are described that may perform dual stage channel interleaving in which code blocks are interleaved at the code block level and at a symbol level. The interleaved code block data may provide time diversity for the code block data, and the interleaved symbol data may provide frequency diversity for the code block data, thus helping to mitigate narrowband and/or bursty interference. The interleaving within the code block and interleaving within the symbols, in some examples, may allow pipelined implementation of decoding of the code blocks at the receiver, for faster processing. In some cases, systematic data and parity data may be interleaved within the code block data to provide a uniform distribution of the systematic data in time within the code block.

公开(公告)号：US20190124558A1

公开(公告)日：2019-04-25

申请号：US16168332

申请日：2018-10-23

Applicant: QUALCOMM Incorporated

Inventor： Peter Pui Lok Ang ,  Peter Gaal ,  Tao Luo ,  Juan Montojo ,  Wanshi Chen ,  Heechoon Lee

IPC: H04W36/00 ,  H04W36/06 ,  H04W72/04 ,  H04W76/27 ,  H04J11/00 ,  H04W76/38

Abstract: Methods, systems, and devices for wireless communications are described. One method may include transmitting a first signal instructing a user equipment (UE) to transition a state of a secondary cell associated with the UE; determining an allocation of resources for the UE to communicate with the secondary cell; and transmitting a second signal including an indication of an active bandwidth part (BWP) used for the allocation of resources based on the determining. The active BWP and the first signal may indicate the transition of the state of the secondary cell.

公开(公告)号：US20190124518A1

公开(公告)日：2019-04-25

申请号：US16227121

申请日：2018-12-20

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Siddhartha Mallik ,  Taesang Yoo ,  Juan Montojo ,  Aleksandar Damnjanovic ,  Junyi Li

IPC: H04W16/14 ,  H04W74/08 ,  H04L5/00 ,  H04L5/26

Abstract: Wireless communications systems and methods related to reservation signal transmission and detection for spectrum sharing are provided. A first wireless communication device communicates, with a second wireless communication device, a reservation request (RRQ) signal to reserve a transmission opportunity (TXOP) in a shared spectrum, wherein the shared spectrum is shared by a plurality of network operating entities, and wherein the first wireless communication device and the second wireless communication device are associated with a first network operating entity of the plurality of network operating entities. The first wireless communication device transmits a reservation response (RRS) signal indicating an interference tolerance level of the first wireless communication device.

公开(公告)号：US20190115955A1

公开(公告)日：2019-04-18

申请号：US16158272

申请日：2018-10-11

Applicant: QUALCOMM Incorporated

Inventor： Makesh Pravin John Wilson ,  Tao Luo ,  Sony Akkarakaran ,  Sumeeth Nagaraja ,  Xiao Feng Wang ,  Juan Montojo ,  Shengbo Chen ,  Wooseok Nam ,  Yan Zhou

IPC: H04B7/024 ,  H04W72/04 ,  H04B7/06 ,  H04L5/00 ,  H04W76/27

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may communicate with a user equipment (UE) using multiple antennas. Data streams may be mapped to the antennas using antenna ports. In some cases, a base station may transmit a transmission configuration indication (TCI) to a UE to indicate quasi co-location (QCL) relationships between antenna ports used for downlink communication with a UE. The UE may use these QCL relationships to identify appropriate techniques for decoding a downlink transmission from the base station. In some cases, it may be appropriate for a base station to update one or more TCI states configured for indicating, to a UE, QCL relationships between antenna ports used for downlink communication with the UE. As described herein, a base station may support techniques for dynamically updating such TCI states (e.g., via downlink control information (DCI) signaling).

公开(公告)号：US10206117B2

公开(公告)日：2019-02-12

申请号：US15654299

申请日：2017-07-19

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Siddhartha Mallik ,  Juan Montojo ,  Xiaoxia Zhang ,  Taesang Yoo

IPC: H04W16/14 ,  H04W72/12 ,  H04B17/309 ,  H04W72/08 ,  H04W74/08 ,  H04W56/00

Abstract: Certain aspects of the present disclosure provide techniques for accessing shared spectrum in new radio (NR). An apparatus of a first operator may determine a synchronization configuration for the first operator and at least a second operator that share spectrum, identify, based on the synchronization configuration, at least a first channel reserved for contending for access to the spectrum, and reserve the access to the spectrum in the first channel to access at least a second channel for communications.

公开(公告)号：US10200906B2

公开(公告)日：2019-02-05

申请号：US15368179

申请日：2016-12-02

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W24/10 ,  H04W48/16 ,  H04W16/10 ,  H04W72/04 ,  H04W72/08 ,  H04W88/04 ,  H04W92/20

Abstract: Systems and methods providing radio resource management (RRM) to facilitate the co-existence of the neighboring cells, such as to manage radio resources for deployments utilizing a same frequency or overlapping frequencies, using discovery signal transmission are disclosed. Discovery signal transmission may be used to enable network elements of a wireless communication system to discover other network elements of the wireless communication system, whether such other network elements are operating with respect to a cell of a same or different operator. Transmission of discovery signals may be utilized to detect situations of dominant interference, whereby the network elements of neighboring cells may provide protected resources for each other. The protected resources may comprise particular frequencies, time slots, channels, etc.

公开(公告)号：US10200169B2

公开(公告)日：2019-02-05

申请号：US15376025

申请日：2016-12-12

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Hao Xu ,  Wanshi Chen ,  Xiao Feng Wang ,  Renqiu Wang ,  Yongbin Wei ,  Juan Montojo ,  Alberto Rico Alvarino ,  Peter Gaal

IPC: H04L5/00 ,  H04L27/26 ,  H04W56/00 ,  H04W4/70 ,  H04W72/04 ,  H04W48/16 ,  H04W88/02 ,  H04L27/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may broadcast a synchronization signal using a narrowband portion of a bandwidth of a cell. The synchronization signal may include a sequence repeated over several symbol periods using a cover code to support power-efficient cell acquisition. A user equipment (UE) receiving the synchronization signal may determine frequency and timing information for a cell by performing a weighted combination and accumulation of low complexity autocorrelation and cross-correlation procedures on the synchronization signal. The reduced complexity correlation procedures may be enabled based on the use of the cover code and a base sequence. In some cases, the cross-correlation may be performed at multiple sampling rates. The use of the cover code within the synchronization signal may also support correlation procedures that use recursive or repeated updates, which may allow for further reduced computational complexity relative to other cell search procedures.

公开(公告)号：US10187864B2

公开(公告)日：2019-01-22

申请号：US15474883

申请日：2017-03-30

Applicant: QUALCOMM Incorporated

Inventor： Taesang Yoo ,  Juan Montojo ,  Jing Sun ,  Zhifei Fan

IPC: H04W4/00 ,  H04W56/00 ,  H04L5/00 ,  H04L5/14 ,  H04W72/04 ,  H04W72/12 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may establish a transmission gap between downlink (DL) and uplink (UL) transmissions on a shared radio frequency (RF) spectrum band using time division duplex (TDD). A length of the gap may be based at least in part on a maximum allowed length of a filler signal corresponding to a coverage area of the base station. To reserve the shared band, a user equipment (UE) may communicate the filler signal for a length of time that is based at least in part on the maximum allowed length and a geographic distance between the UE and the base station. UEs farther from the base station transmit the filler signal of shorter lengths before sending an UL transmission, so that the UL transmissions from different UEs arrive at the same time at the base station regardless of the geographic distance between the UEs.

公开(公告)号：US10182456B2

公开(公告)日：2019-01-15

申请号：US15246005

申请日：2016-08-24

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Maarten Menzo Wentink ,  Srinivas Yerramalli ,  Qingsi Wang ,  Yongbin Wei ,  Juan Montojo

IPC: H04W74/08 ,  H04W16/14 ,  H04W84/12 ,  H04L5/00 ,  H04W88/06

Abstract: Detection and reporting techniques for collisions between transmitters of two different radio access technologies (RATs) transmitting in a shared radio frequency spectrum band is described. The collision may occur following a listen-before-talk procedure but prior to transmission of data, and may not affect the reception of the transmitted data. Collisions may be detected using for example, energy sensing, preamble or ready-to-send (RTS) signal detection, or unsuccessful decoding of all or part of a channel reservation signal. A transmitting device may determine a collision has occurred by detecting an energy level during a preamble transmission is greater than a threshold level or by detecting that an energy level during a transmission gap of a time-domain energy pattern is above a threshold level. A receiving device, such as a user equipment (UE), that detects the collision may report the collision to the transmitter.

公开(公告)号：US20180317217A1

公开(公告)日：2018-11-01

申请号：US15965698

申请日：2018-04-27

Applicant: QUALCOMM Incorporated

Inventor： Juan Montojo ,  Durga Prasad Malladi

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communication are described. In some wireless communications systems, a base station may communicate with multiple user equipment (UEs) that support different features. As described herein, a base station may schedule communications on a set of resources with UEs that support a particular feature. The base station may transmit an indication (e.g., to one or more UEs) of the feature that is to be supported for a UE to communicate on the set of resources, and the UE may receive the indication and determine whether to communicate on the set of resources based on determining if the particular feature is supported. Accordingly, a UE that fails to support the feature may reduce processing costs and save power by ignoring the set of resources.