Qualcomm Incorporated

Virewirx, Inc.

Xcom Labs, Inc.

Siddhartha Mallik

Taesang Yoo

Xiaoxia Zhang

Aleksandar Damnjanovic

Tao Luo

Juan Montojo

Jing X Sun

Yongbin Wei

Durga Prasad Malladi

Tamer Adel Kadous

Naga Bhushan

Jelena Damnjanovic

Arumugam Chendamarai Kannan

Junyi Li

Alexei Yurievitch Gorokhov

Ravi Palanki

Yisheng Xue

Madhavan Srinivasan Vajapeyam

Renqiu Wang

Ahmed Kamel Sadek

Hao Xu

Jun Wang

Michael Mingxi Fan

Tingfang Ji

Seyed Ali Akbar Fakoorian

Jilei Hou

Anastasios Stamoulis

Kiran Kumar Somasundaram

Weiliang Zeng

Peter S Gaal

Gavin Bernard Horn

Jing Jiang

Alan Barbieri

Onkar Jayant Dabeer

Ali A Elghariani

Wanshi Chen

Srinivas Yerramalli

John Edward Smee

Amir Farajidana

Anthony Edet Ekpenyong

Wanlu Sun

Masoumeh Sadeghi

Seyedkianoush Hosseini

Yi Huang

Joseph Binamira Soriaga

Makesh Pravin John Wilson

Andrei Dragos Radulescu

Stefan Geirhofer

Jamie Menjay Lin

Petru Cristian Budianu

Vikas Jain

Chengjin Zhang

Qingsi Wang

Dinkar Vasudevan

Peter John Black

Navid Hassanpour Ghady

Jaspreet Singh

Wooseok Nam

Alexandros Manolakos

Krishna Kiran Mukkavilli

Yu Zhang

Jing Lei

Aamod Dinkar Khandekar

Avneesh Agrawal

Peter J Black

Zhifei Fan

Lin Yang

Brian Clarke Banister

June Namgoong

Michael Lee McCloud

Chirag Sureshbhai Patel

Chirag Dipak Patel

Ajay Gupta

Kambiz Azarian Yazdi

Mohammad Jaber Borran

Dexu Lin

Lorenzo Ferrari

Sanaz Barghi

Chih Ping Li

Zhengwei Liu

Abhijit Khobare

Hendrik Schoeneich

Parham Noorzad

Myriam Rajih

Andrea Munari

Petru Christian Budianu

David Gutierrez-Estevez

Srinivasa Yerramalli

V Sreekanth Annapureddy

Jing Sun

Seyed Ali Fakoorian

Alexander Damnjanovic

Wei Yongbin

Wang Jun

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

Aspects of this disclosure relate to wireless communications that involve a quasi-omni beam and a directional beam, where the wireless communications involve radio frequency signals having relatively high frequency (e.g., a frequency above 20 GHz). In embodiments, a quasi-omni beam is wirelessly transmitted, a directional beam is selected based on the quasi-omni beam, and a data transmission is received over the selected directional beam.

Wireless communication with quasi-omni and directional beams

Various aspects of the disclosure relate to beam information for independent links. For example, beam information for one link may be sent on at least one other link. 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). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, one link can indicate beam switching for at least one other link. In some scenarios, one link can indicate link recovery for at least one other link. In some scenarios, one link can indicate link failure for at least one other link.

Beam information for independent links

Position determination of a user equipment (UE) is supported using channel measurements obtained for Wireless Access Points (WAPs), wherein the channel measurements are for Line of Sight (LOS) and Non-LOS (NLOS) signals. Based on WAP almanac information and the channel measurements, channel parameters indicative of positions of signal sources relative to a first position of a UE may be determined. Using the first position of the UE and an association of the signal sources with corresponding channel parameters, a second position of the UE may be determined. The position of the UE may be a probability density function. Additionally, position information for signal sources may be determined, such as a probability density function, as well as signal blockage probability and an antenna geometry and the WAP almanac information may be updated accordingly.

Systems and methods for positioning with channel measurements

Aspects of this disclosure relate to user equipment rate selection. Sum rates can be compared including and excluding a candidate layer. Based on the comparison, the candidate layer can be included in a layer set. Rate selection for user equipments of a cluster can be performed based on the layer set. In certain applications, user equipment rate selection can be performed for multiple clusters of user equipments and network nodes. In such applications, inter-cluster interference can be nulled.

Rate selection for user equipments of cluster

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

Aspects of the disclosure relate to a multipoint environment that enables a station (STA) to communicate with multiple access points (APs) and an AP to communicate with multiple STAs in a single wireless protocol stack. For example, a STA can authenticate simultaneously with multiple APs and decode any data packet that includes in a header a destination address that matches an address of the STA, irrespective of the source address included in the header of the data packet. Similarly, an AP can decode any data packet that includes in a header a destination address that matches an address of the AP or that matches a wildcard address associated with the AP, irrespective of the source address included in the header of the data packet.

System and method for reducing data packet processing false alarms

Aspects of the disclosure relate to an interference-aware beamforming environment in which an AP controller can determine one or more beams of one or more APs to serve various STAs. For example, an AP can request that STA(s) provide one or more uplink pilot signals during different time slots. The AP can receive the uplink pilot signal(s) and determine, for each STA, the uplink beam quality of each transmit beam-receive beam pair over which an uplink pilot signal was received from the respective STA. The AP can use reciprocity to determine, for each STA, the downlink beam quality for various transmit beam-receive beam pairs. The AP can use the determined downlink beam quality to identify the best beam with which to serve various STAs. An AP controller can determine which downlink beam(s) an AP should use to serve a STA based on the downlink beams originally selected by the APs.

Interference-aware beamforming

Aspects of the disclosure relate to a multipoint environment that enables a station (STA) to communicate with multiple access points (APs) and an AP to communicate with multiple STAs in a single wireless protocol stack. For example, a STA can authenticate simultaneously with multiple APs and decode any data packet that includes in a header a destination address that matches an address of the STA, irrespective of the source address included in the header of the data packet. Similarly, an AP can decode any data packet that includes in a header a source address that matches an address of an authenticated STA, irrespective of the destination address included in the header of the data packet.

Wireless network multipoint association and diversity

Aspects of this disclosure relate to forming clusters of user equipments and network nodes. A first cluster of first user equipments and first network nodes in a first section can be formed for a time slot. A second cluster of second user equipments and second network nodes in a second section can be formed for the time slot such that the first user equipments are protected from interference associated with the second cluster. During the time slot, the first section has higher priority than the second section. Multiple-input multiple-output wireless communications can occur during the time slot (a) from the first network nodes to the first user equipments and (b) from the second network nodes to the second user equipments.

Clustering in multiple-input multiple-output communication systems

Improvements to asynchronous spatial listen before talk (LBT) procedures are disclosed. In a shared spectrum network spatial LBT procedures are used for directionally targeting the channel reservation process. Prior to transmitting channel reservation signaling, the transmitter and receiver determine an effective interference considering available multiple input, multiple output (MIMO) configuration information. When the effective interference exceeds a predefined threshold, the node may without transmission of its channel reservation signal. Otherwise, when the effective interference remains within the threshold, each node's transmitted channel reservation signal may also identify at least a beamforming matrix either as payload or used to precode the node's channel reservation signal.

Asynchronous spatial LBT

Rate selection in multiple-input multiple-output communication systems

Channel state information (CSI) request procedures are disclosed for use in wireless communication systems. The serving base station transmits an identifier, which signals that the aperiodic reference signal will be transmitted, either in the same subframe or a future subframe, and then transmits the aperiodic reference signal in the designated subframe. UEs served by the base station will receive the identifier, identify a CSI request, either implicitly through the identifier signal received from the base station or explicitly through a UE-specific CSI request, and then generate a CSI report based on the aperiodic reference signal for transmission back to the serving base station.

Channel state information request procedure in wireless communication system

Various aspects of the disclosure relate to event triggers for independent links. For example, an event trigger may be based on measurements from 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). For example, the first device may communicate with a second device (e.g., a TRP) via a first link and communicate with a third device (e.g., a TRP) via a second link. In some scenarios, an event trigger may be based on aggregated measurements from multiple links.

Event trigger for independent links

A method and apparatus for wireless communications are described. The method and apparatus may include transmitting at least one frame that includes a first acquisition interval associated with a first operator and one or more first transmission opportunities having a guarantee interval for the first operator, and a second acquisition interval associated with a second operator different from the first operator and one or more second transmission opportunities having a guarantee interval for the second operator, the first acquisition interval and the one or more first transmission opportunities nonoverlapping with the second acquisition interval and the one or more second transmission opportunities.

Techniques for new radio frame structures for data transmission

Growing community of inventors

San Diego, CA, United States of America

Siddhartha Mallik