Qualcomm Incorporated

Other

Quacomm Incorporated

Durga Prasad Malladi

Yongbin Wei

Tao Luo

Peter S Gaal

Aleksandar Damnjanovic

Wanshi Chen

Hao Xu

Naga Bhushan

Juan Montojo

Tingfang Ji

Xiaoxia Zhang

Srinivas Yerramalli

Byoung-Hoon Kim

Madhavan Srinivasan Vajapeyam

Taesang Yoo

Siddhartha Mallik

Serge D Willenegger

Jelena Damnjanovic

Gavin Bernard Horn

Shimman Arvind Patel

Sandip Sarkar

Junyi Li

Francesco Grilli

Jing X Sun

Arumugam Chendamarai Kannan

Anastasios Stamoulis

Shailesh Patil

Jun Wang

Miguel Griot

Tao Chen

Avneesh Agrawal

Lorenzo Casaccia

Kapil Gulati

Sudhir Kumar Baghel

Edward George Tiedemann, Jr

Nathan Edward Tenny

Ashok Mantravadi

Xiliang Luo

Alan Barbieri

Navid Abedini

Muhammad Nazmul Islam

Sundar Subramanian

Renqiu Wang

Rashid Ahmed Akbar Attar

John Edward Smee

Sai Yiu Duncan Ho

Libin Jiang

Ravi Palanki

Tien Viet Nguyen

Stein Arne Lundby

Osok Song

Alexei Yurievitch Gorokhov

Ozcan Ozturk

Rajat Prakash

Karl Georg Hampel

Kapil Bhattad

Zhibin Wu

Sharad Deepak Sambhwani

Brian Clarke Banister

Georgios Tsirtsis

Avinash Jain

Krishna Kiran Mukkavilli

Hung Dinh Ly

Juergen Cezanne

Ashwin Sampath

Makesh Pravin John Wilson

Bilal Sadiq

Zhifei Fan

Michael Mao Wang

Amir Farajidana

Ozge Koymen

Heechoon Lee

Shuanshuan Wu

Chao Wei

Masato Kitazoe

Aziz Gholmieh

Lin Yang

Peng Cheng

Jilei Hou

Dhananjay Ashok Gore

Jon James Anderson

Stefan Geirhofer

Seyedkianoush Hosseini

Alberto Rico Alvarino

Jing Jiang

Tamer Adel Kadous

Xiao Feng Wang

Yu Zhang

Simone Merlin

Hemanth Sampath

Jing Lei

Parag Arun Agashe

Gordon Kent Walker

Ahmed Kamel Sadek

Jay Rodney Walton

Chih-Ping Li

Michael Lee McCloud

Rashid Ahmed Attar

Techniques for performing peer discovery to enable peer-to-peer (P2P) communication are disclosed. In an aspect, a proximity detection signal used for peer discovery may be generated based on one or more physical channels and/or signals used in a wireless network. In one design, a user equipment (UE) may generate a proximity detection signal occupying at least one resource block based on a SC-FDMA modulation technique. In another design, the UE may generate a proximity detection signal occupying at least one resource block based on an OFDMA modulation technique. The UE may generate SC-FDMA symbols or OFDMA symbols in different manners for different physical channels. In yet another design, the UE may generate a proximity detection signal including a primary synchronization signal and a secondary synchronization signal. For all designs, the UE may transmit the proximity detection signal to indicate its presence and to enable other UEs to detect the UE.

Transmission and reception of proximity detection signal for peer discovery

Methods, systems, and devices for wireless communications (e.g., vehicle to everything systems) are described relating to an adaptive design of demodulation reference signals (DMRS) density based on user equipment (UE) velocity. A UE may send assistance information to a transmitting UE to help identify a DMRS pattern based on the relative speed between the two UEs. Also, the transmitter may determine the adaptive DMRS pattern based on its speed without information of the receiver's speed. The transmitter may indicate the adaptive DMRS pattern in control information to the receiver. A base station may receive assistance information, and the base station may determine the adaptive DMRS pattern to be used by the transmitting UE based on the received assistance information and then indicate the adaptive DMRS pattern to the transmitting UE. A UE may determine an adaptive DMRS pattern to use based on feedback from the receiving UE.

Reference signal patterns based on relative speed between a transmitter and receiver

Methods and apparatuses for adaptive subcarrier spacing in wireless communication networks are described. For example, the described aspects include transmitting, from the UE to a network entity, a first PRACH transmission with a first subcarrier spacing; determining, by the UE, that the first PRACH transmission to the network entity is not successful; and transmitting, from the UE, a second PRACH transmission with a second subcarrier spacing in response to determining that the first PRACH transmission is not successful, wherein the first subcarrier spacing is different from the second subcarrier spacing.

Adaptive subcarrier spacing configuration

Methods, systems, and devices for wireless communication are described. A 5G device may decode a control channel transmission of a safety message in a vehicle-to-everything system during a first portion of a time period. The 5G device may identify, based at least in part on the decoding, a pool of resource blocks (RBs) that are available for the time period. The 5G device may select a subset of RBs from the available pool of RBs for a transmission during a second portion of the time period.

Cellular vehicle-to-everything design principles

Methods, systems, and devices are described for hierarchical communications and low latency support within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing. In some examples symbols of different duration may be multiplexed such that different symbol durations coexist.

Mixed numerology OFDM design

Certain aspects of the present disclosure generally relate to wireless communication. More particularly, certain aspects of the present disclosure relate to early termination of a downlink channel repetition transmission, early termination of an uplink channel repetition, and/or determination of a plurality of beams for a repetition transmission. Numerous other aspects are provided.

Techniques and apparatuses for improving new radio coverage

Aspects of the present invention relate to wireless communications by a user equipment (UE), comprising, identifying resources in a narrowband region, the narrowband region spanning no more than a single resource block in a transmission time interval (TTI) and communicating with a base station using the identified resources.

Long-term evolution compatible very narrow band design

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, from a base station, a downlink transmission in a radio frequency spectrum band and may identify reference resources in the downlink transmission for computing a channel state information (CSI) report. The UE may generate the CSI report based at least in part on the identified reference resources and transmit, in the radio frequency spectrum band, the CSI report in a random access request message to the base station. The base station may receive the request message and identify CSI associated with the band based at least in part on the CSI report included in the random access request message. The base station may transmit, to the UE, a random access response message based at least in part on the identified CSI in the radio frequency spectrum band.

Channel state information reporting for random access procedures

Techniques are described for wireless communication. A first method may include receiving at a user equipment (UE) over an unlicensed radio frequency spectrum band an indication of a time window associated with a transmission of a synchronization signal, and monitoring the unlicensed radio frequency spectrum band during the time window to receive a synchronization signal from a base station. A second method may include transmitting an indication of a time window associated with a transmission of a synchronization signal; performing a plurality of clear channel assessments (CCAs) on an unlicensed radio frequency spectrum band during the time window; and transmitting the synchronization signal over the unlicensed radio frequency spectrum band at a transmission time during the time window. The transmission time may be based at least in part on a result of at least one of the CCAs.

Techniques for transmitting and receiving synchronization signals over an unlicensed radio frequency spectrum band

Techniques are described for wireless communication. An orthogonal frequency-division multiple access (OFDMA) configuration of an uplink channel is identified for communications in an unlicensed radio frequency spectrum band. An OFDMA waveform is generated based on the identified OFDMA configuration. The OFDMA waveform is communicated in a signal in the unlicensed radio frequency spectrum band. A virtual cell identifier of a first base station may be associated with transmissions between the first base station and a first user equipment (UE). A set of common resource blocks may be identified for transmission of a demodulation reference signal (DM-RS) between the first base station and the first UE. A configuration of an uplink channel may be dynamically selected for uplink communications in an unlicensed radio frequency spectrum band. A waveform may be generated based on the selected configuration. The waveform may be communicated in a signal in the unlicensed radio frequency spectrum band.

Techniques for configuring uplink channels in unlicensed radio frequency spectrum bands

Methods, systems, and devices for wireless communications are described. A wireless device may identify a set of power configurations for a plurality of communications with at least one target device. The set of power configurations may be based at least in part on a type of signal, a type of channel, a parameter of the wireless device, a parameter of the target device, or a combination thereof. The wireless device may then determine a duplexing mode for the plurality of communications based at least in part on the set of power configurations. The duplexing mode may be, for example, a full duplex mode or a half-duplex mode. The wireless device may then transmit the plurality of communications to and/or receive the plurality of communications from the at least one target device according to the set of power configurations and the selected duplexing mode.

Duplexing modes based on power configurations for transmissions

Methods, systems, and devices are described for providing allocations and signaling for different types of communications within a wireless communication system. An eNB and/or a UE may be configured to operate within the wireless communication system using two or more different types of communications. The different types of communications may differ, for example, based on round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, a transmission time interval (TTI) for wireless transmissions, and/or duty cycle timing of wireless transmissions. Reserved resources within a system bandwidth may be identified for a first type of communications, and all or a portion of remaining resources within the system bandwidth may be allocated for other communications that may differ from the first type of communications based on, for example, RTT, TTI, and/or duty cycle timing.

Low-latency, low-bandwidth and low duty cycle operation in a wireless communication system

Techniques for transmitting and receiving wireless communications over an unlicensed radio frequency spectrum band are disclosed, including techniques for transmitting and receiving service information blocks over the unlicensed radio frequency spectrum band, techniques for gaining access to the unlicensed radio frequency spectrum band by performing extended clear channel assessments (eCCAs), techniques for transmitting and receiving synchronization signals and reference signals over the unlicensed radio frequency spectrum band, techniques for communicating locations of reference signals, and techniques for communicating availability of certain resources to be combined across multiple different transmissions.

Cell discovery in a wireless network using an unlicensed radio frequency spectrum band

Methods, systems, and devices are described for low latency communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system and may send triggers to initiate communications using a dedicated resource in a wireless communications network that supports transmissions having a first subframe type and a second subframe type, the first subframe type comprising symbols of a first duration and the second subframe type comprising symbols of a second duration that is shorter than the first duration. Communications may be initiated by transmitting a trigger from the UE or eNB using the dedicated resource, and initiating communications following the trigger. The duration of time between the trigger and initiating communications can be significantly shorter than the time to initiate communications using legacy LTE communications.

Wireless communications in a system that supports a first subframe type having a first symbol duration and a second subframe type having a second symbol duration

Growing community of inventors

San Diego, CA, United States of America

Durga Prasad Malladi