Qualcomm Incorporated

Yiqing Cao

Wanshi Chen

Jing Lei

Peter S Gaal

Huilin Xu

Yan Li

Tingfang Ji

Yuwei Ren

Joseph Binamira Soriaga

Xiao Feng Wang

Chenxi Hao

Alberto Rico Alvarino

Kazuki Takeda

Bin Han

Juan Montojo

Yi Huang

Peter Pui Lok Ang

Iyab Issam Sakhnini

Renqiu Wang

Jun Ma

Seyong Park

Hao Xu

Ruiming Zheng

Dan Zhang

Zhimin Du

Xiaoxia Zhang

Alexandros Manolakos

Mostafa Khoshnevisan

Chao Wei

Qiang Wu

Bo Chen

Sony Akkarakaran

Naga Bhushan

Hung Dinh Ly

Wei Jennifer Yang

Linhai He

Le Liu

Xipeng Zhu

Thomas Stockhammer

Qiaoyu Li

Tao Luo

Seyedkianoush Hosseini

Gavin Bernard Horn

Krishna Kiran Mukkavilli

Yu Zhang

Stephen William Edge

John Edward Smee

Sven Fischer

Jay Kumar Sundararajan

Peng Cheng

Guttorm Ringstad Opshaug

Yang Yang

Lenaig Genevieve Chaponniere

Juan Zhang

Lorenzo Casaccia

Michael Franco Taveira

Enoch Shiao-Kuang Lu

Hong Qiu

Lu Gao

Shuping Chen

Guomin Yang

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently transmitting data and control information in a first RACH message to a base station as part of a two-step RACH procedure. In particular, rather than or in addition to transmitting data and control information in a physical uplink shared channel (PUSCH) in the first RACH message, a user equipment (UE) may transmit the data and control information along with a RACH preamble in a RACH occasion in the first RACH message (e.g., when the number of bytes of data or control information to be transmitted is low). Using these techniques, in some instances, the UE may transmit the data and control information in a first RACH message without transmitting the PUSCH, and the overhead associated with transmitting the PUSCH may be eliminated.

Random access channel occasion configuration

Certain aspects of the present disclosure provide techniques for performing remote interference management. In certain embodiments, a method includes detecting interference from one or more aggressor BSs. The method further includes transmitting distinguishable victim reference signals (RSs). The method further includes. The method further includes monitoring for distinguishable aggressor RSs from the aggressor BSs. The method further includes determining to stop transmitting one or more of the distinguishable victim RSs based on the monitoring.

Remote interference management design

A base station (BS) may determine (estimate) a preparation time for at least one uplink (UL) transmission by a user equipment (UE) on at least one radio frequency (RF) carrier. The BS may determine the preparation time so that the BS will send a grant for the at least one transmission to the UE a sufficient amount of time (based on the estimated preparation time) before the at least one transmission is scheduled to occur to enable the UE to conduct the at least one UL transmission on a selected one of the RF carriers or on both RF carriers. The BS may select the longest preparation time from the preparation times of different RF carriers. The BS may select the subcarrier spacing (SCS) index from the SCS indexes for different RF carriers that provides a longer preparation time. The BS may add a defined value to a preparation time.

Determining transmission preparation time for wireless communication on at least one carrier

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a testing equipment may transmit a set of test signals to a device under test (DUT) from a plurality of directions relative to the DUT; obtain, from the DUT, a set of measured multiple-input multiple-output (MIMO) sensitivity results based at least in part on the set of test signals; and determine a MIMO over the air (OTA) performance of the DUT based at least in part on a single measured MIMO sensitivity result of the set of measured MIMO sensitivity results or an average of MIMO sensitivity results, in a subset of the set of measured MIMO sensitivity results, that satisfy a threshold percentile. Numerous other aspects are provided.

Multiple-input multiple-output over the air performance testing

This disclosure relates to methods, devices, and systems for wireless communications, and more particularly to aggregating physical uplink shared channel (PUSCH) resource units relating to a random access message. A user equipment (UE) may identify a random access message of a random access procedure. The random access message may include a random access preamble and a random access payload. The UE may aggregate multiple PUSCH resource units of a set of PUSCH resource units associated with one or more PUSCH occasions (POs) based on one or more of a payload size of the random access payload or a modulation and coding scheme associated with the random access payload. As a result, the UE may transmit the random access payload of the random access message on a PUSCH using time and frequency resources of the aggregated multiple PUSCH resource units over the one or more POs.

Aggregated uplink shared channel transmission for two step random access channel procedure

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to monitor search spaces on a primary cell and an secondary cell in a carrier aggregation configuration. The UE may monitor the search spaces for control information according to a shared search space monitoring configuration. Based on the shared search space monitoring configuration, the UE may identify that the secondary cell is a scheduling cell and the primary cell is a scheduled cell (e.g., cross-carrier scheduling). The UE may monitor control channel candidates of search spaces on the primary cell and on the secondary cell for downlink control information messages scheduling data transmissions with the primary cell. In some examples, the cross-carrier scheduled communications may be configured according to a scheduling configuration, which may include one or more scheduling constraints.

Techniques for cross-carrier scheduling from a secondary cell to a primary cell

Some aspects described herein relate to receiving, from a base station, a configuration to transmit uplink signaling to the base station, determining, based on the configuration, to setup a group for sidelink communication with one or more other user equipments (UEs), transmitting, based on determining to setup the group, a first uplink message based on the configuration from the base station, and receiving, from the one or more other UEs, a second uplink message based on the configuration to indicate setup of the group. Some aspects described herein also relate to conflict avoidance between sidelink and uplink/downlink communications.

Techniques for improving efficiency in sidelink wireless communications

Methods and systems for capturing notes on a mobile device include displaying a lock screen on the electronic display of the mobile device and operating the mobile device in an active interaction state provides write-only to a secure file on the mobile device and that that provides write-only access to the secure file on the mobile device. The mobile device may render user inputs on top of the lock screen in a user input area on the mobile device display for a period of time, use the write-only access to store the user inputs in the secure file, and cease rendering the user inputs in response to detecting expiration of the period of time or in response to detecting user inactivity.

System and method for capturing notes on a mobile device

Certain aspects of the present disclosure provide techniques for cross-carrier feedback.

Cross carrier feedback

Wireless communications systems and methods related to joint-carrier scheduling using a single downlink control information (DCI) signal. The user equipment (UE) receives from a base station (BS) of a first serving cell, a downlink control information (DCI) that indicates a joint-carrier scheduling scheme. Using the joint-carrier scheduling scheme in the DCI, the UE schedules first data for communication on a first shared channel associated with the first serving cell and second data for communication on a second shared channel associated with a second serving cell.

PDCCH monitoring for single-DCI to multi-cell scheduling

A first UE includes: a transceiver; a memory; and a processor, communicatively coupled to the transceiver and the memory, configured to: at least one of: initiate a first UE-to-UE positioning function in response to receiving a first UE-to-UE positioning trigger from a second UE via the transceiver; or send a second UE-to-UE positioning trigger for the second UE via the transceiver to cause the second UE to initiate a second UE-to-UE positioning function; or communicate with the second UE via the transceiver to determine a characteristic of a UE-to-UE location reference signal to be exchanged between the first UE and the second UE; and exchange the UE-to-UE location reference signal with the second UE via the transceiver.

UE-to-UE positioning

Certain aspects of the present disclosure provide techniques for uplink scheduling for communication on an uplink from a user equipment (UE) to a base station (BS). The uplink scheduling is based on uplink transmission (UL Tx) switching time and/or uplink data preparation time of the UE. The uplink data preparation time is calculated based on the UL Tx switching time. For example, a UE can report to a BS at least one of an indication of a UL Tx switching time and an uplink data preparation time of the UE. In return, the UE can receive an indication of uplink scheduling from the BS, which the UE can use to communicate with the BS.

Uplink transmission (UL Tx) preparation time

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

A UE may determine a number of antenna ports associated with a frequency band that includes one or more CCs. The determined number of antenna ports may be based on a plurality of UL Tx chains for the one or more CCs/frequency band. The UE may switch from a first UL Tx chain to a second UL Tx chain, at least one of which may be associated with the one or more CCs/frequency band. The number of antenna ports may correspond to a maximum number of antenna ports of an individual CC of the one or more CCs, or to a sum of antenna ports of the one or more CCs. For the latter, the number of antenna ports may be limited to an available number of UE antenna ports when the sum of antenna ports is greater than the available number of UE antenna ports.

Antenna ports determination of UL TX switching

The present disclosure relates to methods and devices for wireless communication at a wireless device of a wireless wearable device. In one aspect, the wireless device may transmit a first report based on one of a location of the wireless wearable device, a time period, or reception of a user-controlled indication to transmit the first report. The wireless device may also receive, based on the transmitted first report, a configuration to switch from a first mode to a second mode. In some aspects, the configuration can include at least one parameter associated with a power savings at the wireless wearable device while in the second mode. Additionally, the wireless device can operate based on the at least one parameter while in the second mode.

Methods and apparatus for wireless device operation

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Beijing, China

Yiqing Cao