Qualcomm Incorporated

Other

Renqiu Wang

Peter S Gaal

Hao Xu

Wanshi Chen

Yi Huang

Seyong Park

Tingfang Ji

Jing Lei

Alberto Rico Alvarino

Tao Luo

Sony Akkarakaran

Wei Zeng

Naga Bhushan

Xiao Feng Wang

Seyed Ali Akbar Fakoorian

Joseph Binamira Soriaga

Juan Montojo

Jing Jiang

Krishna Kiran Mukkavilli

Yongbin Wei

Wei Jennifer Yang

Hung Dinh Ly

Madhavan Srinivasan Vajapeyam

Muhammad Sayed Khairy Abdelghaffar

John Edward Smee

Huilin Xu

Hwan Joon Kwon

Amir Aminzadeh Gohari

Peter Pui Lok Ang

Ravi Palanki

Abdelrahman Mohamed Ahmed Mohamed Ibrahim

Jay Kumar Sundararajan

Xiaofeng Wang

Xiaoxia Zhang

Alexandros Manolakos

Durga Prasad Malladi

Siddhartha Mallik

Pinar Sen

Ahmed Attia Abotabl

Shimman Arvind Patel

Joseph Patrick Burke

Seyedkianoush Hosseini

Haitong Sun

Linhai He

Zhifei Fan

Taesang Yoo

Heechoon Lee

Le Liu

Yiqing Cao

Yuwei Ren

Saeid Sahraei

Yu Zhang

Gabi Sarkis

Thomas J Richardson

Chenxi Hao

Weimin Duan

Chih-Ping Li

Bo Chen

Dung Ngoc Doan

Ruifeng Ma

Peter Ang

Jing X Sun

Yang Yang

Gokul Sridharan

June Namgoong

Liangming Wu

Chong Li

Valentin Alexandru Gheorghiu

Timo Ville Vintola

Vincent Loncke

Alexei Yurievitch Gorokhov

Yuchul Kim

Chao Wei

Bilal Sadiq

Masato Kitazoe

Lin Yang

Keiichi Kubota

Danlu Zhang

Yeliz Tokgoz

Qiaoyu Li

Pavan Kumar Vitthaladevuni

Ying Wang

Wei Yang

Shrinivas Kudekar

Sanghoon Kim

Lu Yuan

Arthur Miller

Se Yong Park

Vijay Kumaravelu

Thomas Joseph Richardson

Seyed Ali Fakoorian

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

Disclosed are techniques for communication. In an aspect, a first UE determines information (e.g., from an external device, or via the first UE's own energy sensing) associated with scheduled uplink transmissions on a set of symbols by a second UE. The first UE performs measurements on at least some of the scheduled uplink transmissions during a first subset of the set of symbols where no DL signals are received by the first UE. The first UE receives at least one DL signal during a second subset of the set of symbols, and mitigates interference associated with the at least one DL signal based on the measurements.

Mitigation of interference at a first user equipment based on information of scheduled uplink transmissions by a second user equipment

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may determine a resource allocation, from a resource set, for a response message using a resource allocation selection procedure. In some aspects, the user equipment may transmit the response message using the resource allocation and based at least in part on determining the resource allocation. In some aspects, the user equipment may determine, using an implicit resource mapping procedure and before a radio resource control connection establishment, a resource allocation for a redundancy scheme response message based at least in part on a remaining minimum system information (RMSI) value. Numerous other aspects are provided.

Uplink control channel resource allocation

Aspects are provided which allow a network entity to consider an identity property for received RS during analog combining or aggregation in order to achieve efficient channel sounding and estimation. The network entity may receive an RS in a time period via a plurality of antenna elements. The network entity may combine, in an analog domain, the RS received via each of the antenna elements based at least in part on weights associated with the antenna elements. At least one weight of the weights changes over the time period, and the weights are elements of a time domain orthogonal cover code or a DFT matrix. As a result of these weights, the network entity may estimate multiple combined or individual channels of antenna elements or groups from one or more RS in one or more symbols, potentially improving UE energy efficiency, efficient resource allocation, and coherency between the antenna elements.

Efficient channel sounding through analog aggregation

Methods, systems, and devices for wireless communications are described. In some systems (e.g., non-orthogonal multiple access (NOMA) systems), a base station may serve a large number of user equipments (UEs) on the uplink. To improve detectability for these uplink transmissions (e.g., if reference signals are not available for the transmissions), the UEs may implement parallel transmissions of preambles with uplink data. A UE may split the uplink data into one or more data layers, and may select one or more preamble layers to transmit superposed with the data layers. These preambles may be sequences known to both the UE and the base station to aid in detectability. The UE may assign different signature sequences to each of these layers based on cross-correlation values (e.g., assigning sequences with higher cross-correlation values to the data layers for improved detectability), and may scramble the layers into a single shared signal for transmission.

Parallel transmission of preamble sequences with data layers for improved data detection

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a payload for inclusion in an uplink transmission. The UE may organize the payload into a code block group (CBG) that includes one or more code blocks (CB). The UE may map each CB of the CBG to a corresponding uplink shared channel resource unit (e.g., a physical uplink shared channel resource unit) of an uplink transmission occasion of the first UE. The uplink transmission occasion may also be shared with one or more additional UEs such that the CBG of the first UE is multiplexed with additional CBGs from the additional UEs. The UE may transmit, to a base station, the uplink transmission including each uplink shared channel resource unit on which the CBG is organized.

Code block group based multiplexing

Methods, systems, and devices for wireless communications are described. Generally, a base station may dynamically and reliably indicate that pending transmissions are part of a full duplex operation via downlink control information (DCI) designs described herein. For example, a base station may transmit, to a user equipment (UE) a DCI including no more than one downlink grant and no more than one uplink grant for a full duplex operation. In some examples, the base station may transmit a first-stage DCI including partial information, and second-stage DCIs including full uplink and downlink grants for a full duplex operation. In some examples, the base station may configure periodic or semi-periodic uplink and downlink resources that may overlap in time, and may dynamically indicate, to the UE, whether the overlapping uplink and downlink resources are scheduled for a full duplex operation.

Control channel designs for dynamic full duplex enabling

Certain aspects of the present disclosure provide techniques for a low cost (LC) user equipment (UE) to signal to a base station (BS) capabilities to receive physical downlink control channels (PDCCHs) in wireless communications systems. In an exemplary method, a UE signals to a base station (BS) a plurality of parameters for physical downlink control channel (PDCCH) reception by the UE and receives a PDCCH according to the plurality of parameters.

Low-complexity physical downlink control channels and related signaling

Certain aspects relate to techniques for z-axis rotation estimation for compensating signaling transmitted between two or more nodes over a wireless channel where an antenna array of at least one of the nodes is misaligned about the z-axis relative to another node. For example, a transmitting node may transmit pilot signals defined by phase shifts to provide a receiving node with a basis for estimating the angle of rotation by which the antenna arrays are misaligned. The transmitting node may then take remedial action to address the misalignment based on the estimation.

Signaling for z-rotation estimation

A user equipment (UE) may map a demodulation reference signal (DMRS) sequence to a first symbol in a set of resource blocks (RBs) of an uplink long burst, and the first symbol may occur at the beginning of the uplink long burst. The DMRS sequence may be 'front-loaded' in the uplink long burst. The DMRS sequence may be dependent upon RB locations. When the DMRS sequence is mapped to the beginning of an uplink long burst, uplink control information (UCI) may be mapped in a physical uplink shared channel (PUSCH). A UE may map UCI in a PUSCH after the DMRS sequence is mapped to the beginning of the uplink long burst. When the base station receives an uplink long burst including the front-loaded DMRS and the UCI mapped in the PUSCH, the base station may identify the DMRS for channel estimation/interference cancelation of the UCI carried on the PUSCH.

System and method for mapping uplink control information

Methods, systems, and devices for wireless communication are described. A wireless device may transmit feedback, such as hybrid automatic repeat request (HARQ) feedback for groups of code blocks rather than for an entire transport block or individual code blocks. The wireless device may transmit an acknowledgement (ACK) or negative-acknowledgement (NACK) to provide feedback for each code block group of a set of code block groups. An ACK may indicate that code blocks in a code block group were successfully decoded, and a NACK may indicate that at least one code block in a code block group was not successfully decoded. Wireless devices may support several techniques for grouping code blocks for feedback reporting to allow for efficient retransmissions and limited overhead. Different grouping schemes may be employed depending on system constraints, device capability, link conditions, or the like.

Code block grouping and feedback that support efficient retransmissions

In an aspect, a radar controller determines transmission configuration(s) for target radar signals from a first wireless communications device to a second wireless communications device, the target radar signals for sensing of at least one target, the at least one transmission configuration configuring a first time-domain section associated with a first time-domain target radar signal density, and a second time-domain section associated with a second time-domain target radar signal density that is different than the first time-domain target radar signal density. The radar controller transmits the transmission configuration(s) to the first and second wireless communications devices. The first wireless communications device transmits the target radar signals to the second wireless communications device in accordance with the transmission configuration(s).

Transmission configuration for target radar signals with different target radar signal densities in time-domain

In an aspect, a radar controller determines a first transmission configuration for a reference radar signal on a first link from a first base station to a second base station, and a second transmission configuration for at least one target radar signal on at least one second link from the first base station to the second base station, the at least one target radar signal for sensing of at least one target, the first transmission configuration being different than the second transmission configuration. The radar controller transmits the first and second transmission configurations to the first and second base stations. The first base station transmits the reference radar signal and the at least one target radar signal in accordance with the respective transmission configurations.

Transmission configurations for reference radar signal and at least one target radar signal

Methods and apparatuses for wireless communication for line-of-sight Multiple-Input-Multiple-Output (LOS MIMO) are described. A first pilot signal is transmitted to a second device. The first pilot signal is at least one of a constant phase pilot or a linear phase ramped pilot for estimating a misalignment of a second antenna array of the second device with respect to a first antenna array of the first device.

Parallel shift estimation for LOS MIMO communication

A configurable new radio (NR) RACH procedure that may be executed by a UE and a base station is disclosed. A configuration to determine, by a user equipment, a random access procedure timeline, from multiple random access procedure timelines that each define a different duration between one or more messages that are communicated in a random access procedure can be determined or transmitted. A random access preamble can be received from the UE based on the random access procedure timeline, and a response to the random access preamble can be determined or transmitted based on the random access procedure timeline.

Random access procedure timing designs

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San Diego, CA, United States of America

Renqiu Wang