公开(公告)号：US20190132869A1

公开(公告)日：2019-05-02

申请号：US16162774

申请日：2018-10-17

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Arumugam Chendamarai Kannan ,  Jing Sun ,  Xiaoxia Zhang

IPC: H04W74/08 ,  H04W72/04 ,  H04W72/08

Abstract: Methods, systems, and devices for wireless communications are described. A transmitter may include an interference avoidance preamble in a wireless transmission. The interference avoidance preamble may identify resources for transmitting an interference avoidance request associated with the wireless transmission. A receiver may experience interference between the wireless transmission and another wireless transmission, and the receiver may transmit the interference avoidance request using the resources identified in the interference avoidance preamble. The transmitter may receive the interference avoidance request and, in response, may enable an interference avoidance mechanism, for example, a listen before talk (LBT) procedure, a frequency-division multiplexing (FDM) scheme, a time-division multiplexing (TDM) scheme, a spatial multiplexing scheme, or a combination.

公开(公告)号：US20190132829A1

公开(公告)日：2019-05-02

申请号：US16143179

申请日：2018-09-26

Applicant: QUALCOMM Incorporated

Inventor： Kapil Bhattad ,  Ananta Narayanan Thyagarajan ,  Xiaoxia Zhang ,  Jing Sun ,  Taesang Yoo

IPC: H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. One method may include determining symbol level scheduling for symbols allocated to a plurality of user equipments (UEs) within a transmission time interval (TTI); transmitting, in a control channel of the TTI, control information indicating the symbol level scheduling; and communicating, in accordance with the symbol level scheduling, the symbols within the TTI in a plurality of beamformed transmissions. Another method may include receiving, by a UE, control information in a control channel of a TTI; processing the control information to determine a subset of symbols of the TTI allocated to the UE, a symbol length or duration of the subset of the symbols allocated to the UE, and symbol level scheduling for the subset of the symbols within the TTI; and receiving the subset of the symbols based on the control information.

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：US20190124595A1

公开(公告)日：2019-04-25

申请号：US16122542

申请日：2018-09-05

Applicant: QUALCOMM Incorporated

Inventor： Jing Lei ,  Jing Sun ,  Tamer Kadous

IPC: H04W52/02 ,  H04W74/00 ,  H04W72/10 ,  H04L5/00

Abstract: Multi-band Wake-up (MWU) signal transmission and detection is disclosed. A transmitter determines a MWU signal that indicates availability of one or more sub-bands to a first user in a serving cell, and transmits the MWU signal for the one or more sub-bands in the serving cell. A clear channel assessment (CCA) status on the one or more sub-bands that are available to the first user is carried by the payload of MWU signals. The MWU signal includes a first user identifier that identifies the first user as a targeted receiver of the MWU signal. The first user has priority over a second user to utilize the one or more sub-bands. Correspondingly, a receiver receives a MWU signal for one or more sub-bands in the serving cell, decodes a payload of the MWU signal, and determines availability of the one or more sub-bands to the first user based on the payload of the MWU signal.

公开(公告)号：US20190090279A1

公开(公告)日：2019-03-21

申请号：US16133163

申请日：2018-09-17

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang

IPC: H04W74/08 ,  H04W16/14 ,  H04W72/14 ,  H04L5/00 ,  H04W28/26 ,  H04W72/04

Abstract: Methods, systems, and devices for wireless communications are described. A method may include receiving, from a base station, a pre-grant message indicating that a downlink transmission is available for transmission to a user equipment (UE) on a first radio frequency (RF) spectrum band, and performing a listen-before-talk (LBT) procedure. The UE may then transmit, based on the LBT procedure indicating a clear channel, a channel reservation signal on a second RF spectrum band, and transmit, to the base station, a response to the pre-grant message on the second RF spectrum band. Another method may include a base station transmitting a pre-grant message to the UE, and receiving a response to the pre-grant message on a second RF spectrum band. The base station may then transmit the downlink transmission to the UE using one or more of a set of transmit beams on a first RF spectrum band.

公开(公告)号：US20190090231A1

公开(公告)日：2019-03-21

申请号：US16048705

申请日：2018-07-30

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Kapil Bhattad ,  Jing Sun ,  Seyed Ali Akbar Fakoorian

IPC: H04W72/04 ,  H04L5/00

Abstract: Wireless communications systems and methods related to improving multiplexing capability in a frequency spectrum are provided. A first wireless communication device obtains a configuration for communicating a communication signal in a frequency spectrum. The configuration is based on at least a number of wireless communication devices scheduled to communicate in a time period. The configuration indicates resources in the frequency spectrum over the time period and a frequency distribution mode of the resources. The first wireless communication device communicates, with a second wireless communication device, the communication signal in the frequency spectrum during the time period based on the configuration.

公开(公告)号：US20190059111A1

公开(公告)日：2019-02-21

申请号：US16058678

申请日：2018-08-08

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Tao Luo ,  Jing Sun

IPC: H04W74/08 ,  H04W72/04 ,  H04L12/24 ,  H04W52/18

Abstract: Wireless communications systems and methods related to performing random channel access are provided. A first wireless communication device communicates a random access configuration with a second wireless communication device in a first frequency spectrum. The random access configuration includes information associated with a channel characteristic difference between the first frequency spectrum and the second frequency spectrum. The first wireless communication device communicates a random access signal with the second wireless communication device in the second frequency spectrum based on the random access configuration. The first frequency spectrum is a millimeter wave (mmWav) frequency band. The second frequency spectrum is a non-mmWav frequency band.

公开(公告)号：US20190037480A1

公开(公告)日：2019-01-31

申请号：US16038888

申请日：2018-07-18

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Xiaoxia Zhang

IPC: H04W48/16 ,  H04W64/00 ,  H04W24/02

Abstract: Methods, systems, and devices for wireless communication are described. Some wireless systems may benefit from estimation of location of a user equipment (UE) within the system. Such estimations may be based at least in part on pilot signals received from one or more reference points (e.g., base stations, access points, etc.). However, in some cases, the communication range of the pilot signals may be too small to support location estimation for at least some UEs in the system. Further, the pilot signals may consume time-frequency resources, which may reduce throughput for the system. In accordance with the described techniques, highly detectable pilot signals may coexist with synchronization signal (SS) block transmissions. Such coexistence may improve accuracy of location estimations for some, or all UEs in the system, or otherwise benefit the system.

公开(公告)号：US20190029040A1

公开(公告)日：2019-01-24

申请号：US16027735

申请日：2018-07-05

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Xiaoxia Zhang ,  Andrei Dragos Radulescu

IPC: H04W74/08 ,  H04W48/16 ,  H04B7/0413 ,  H04W72/04

Abstract: Techniques are described herein for coordinating a random access channel (RACH) procedure with a beam discovery procedure. A timing and configuration of a RACH window may be coordinated with a beam discovery window. By coordinating the two windows, a user equipment (UE) may be configured to use information learned from the beam discovery procedure during the RACH procedure, thereby increasing the likelihood that the RACH procedure is successful. In some cases, the RACH procedure is triggered by the transmission of directional beam reference signals during the beam discovery window. In such cases, the UE determines the timing of the RACH window based at least in part on the receipt of the directional beam reference signals. In some cases, the RACH window is configured using a static configuration relative to the beam discovery window.

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.