Qualcomm Incorporated

Muhammad Nazmul Islam

Junyi Li

Tao Luo

Navid Abedini

Sundar Subramanian

Juergen Cezanne

Jianghong Luo

Karl Georg Hampel

Ashwin Sampath

Sony Akkarakaran

Hung Dinh Ly

Peter S Gaal

Makesh Pravin John Wilson

Alexei Yurievitch Gorokhov

Hong Cheng

Joseph Binamira Soriaga

Linhai He

Wanshi Chen

Vasanthan Raghavan

Tianyang Bai

Jing Lei

Heechoon Lee

Wooseok Nam

Krishna Kiran Mukkavilli

Xiaoxia Zhang

Jing X Sun

Tingfang Ji

Yan Zhou

Alexandros Manolakos

Xiao Feng Wang

Jung Ho Ryu

Durga Prasad Malladi

Ozcan Ozturk

Peter Pui Lok Ang

Haitong Sun

Naga Bhushan

Kapil Gulati

Jing Jiang

Piyush Gupta

Gabi Sarkis

Juan Montojo

Hao Xu

Bilal Sadiq

Sumeeth Nagaraja

Luca Blessent

Raghu Narayan Challa

Ruhua He

Alessio Marcone

Yong Li

Valentin Alexandru Gheorghiu

Awlok Singh Josan

Amir Aminzadeh Gohari

Yongjun Kwak

Ozge Koymen

Arash Mirbagheri

Joseph Patrick Burke

Changhwan Park

Junsheng Han

Atul Maharshi

Naeem Akl

Chetan Chakravarthy

Samel Celebi

Carsten Aagaard Pedersen

Wei Zeng

Yu Zhang

Kuo-Chun Lee

Kiran Venugopal

Yang Yang

Arvind Vardarajan Santhanam

Peng Cheng

Murali Paravath Menon

Chao Wei

Hari Sankar

Pavan Kumar Vitthaladevuni

Jun Zhu

Parthasarathy Krishnamoorthy

Shrinivas Kudekar

Chun-Hao Hsu

Krishna Rao Mandadapu

Yuanning Yu

Yi Huang

Mostafa Khoshnevisan

Huilin Xu

Tamer Adel Kadous

Mahmoud Taherzadeh Boroujeni

Yuchul Kim

Shay Landis

Prashanth Haridas Hande

Michael Levitsky

Keiichi Kubota

Ran Berliner

Rahul Malik

Mihir Vijay Laghate

Ruiming Zheng

Yongle Wu

Andrzej F Partyka

Udara Fernando

Shrenik Patel

Enoch Shiao-Kuang Lu

Disclosed are techniques for wireless communication. In an aspect, a base station may determine a transmit power to be used by a downstream node or an amplification gain to be used by the downstream node when relaying or repeating messages to a target node. The base station may transmit, to the downstream node, a message intended for the target node, the message having an indicated transmit power, wherein the message intended for the target node is transmitted by the base station using an actual transmit power. In some aspects, the indicated transmit power is the transmit power to be used by the downstream node, so that when the message intended for the target node is repeated by the downstream node, the indicated transmit power of the repeated message matches the actual transmit power of the repeated message.

Measurement and power control in integrated access fronthaul networks

A first apparatus may determine a first schedule associated with the one or more repetitions of the control information on the control channel based on the first information. The first apparatus may receive, from the network, at least one of the one or more repetitions of the control information on the control channel based on the first schedule, wherein the control information indicates a second schedule associated with a random access response (RAR) on a data channel. The first apparatus may receive, from the network, the RAR on the data channel based on the second schedule.

System and method for repetition of scheduling information on a control channel

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive a grant scheduling repetition-based system information block transmissions for the UE, the grant indicating a mapping configuration identifying time-frequency resources for a second repetition of a system information block transmission relative to a first repetition of the system information block transmission. The UE may receive, in a first subset bandwidth of a system bandwidth, the first repetition of the system information block transmission according to the grant. The UE may receive, in a second subset bandwidth of the system bandwidth, the second repetition of the system information block transmission according to the grant and based at least in part on the mapping configuration.

System information transmission with coverage recovery

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media for a reduced capability (RedCap) user equipment (UE) and supporting cell. The RedCap UE is configured with multiple bandwidth parts (BWPs). A maximum bandwidth of the RedCap UE is lower than a maximum bandwidth of a non-RedCap UEs. The UE receives a cell-defining synchronization signal block (CD-SSB) that defines a shared initial downlink BWP for RedCap UEs and non-RedCap UEs. The UE switches to a separate initial downlink BWP for RedCap UEs. The UE accesses the cell via the separate initial downlink BWP. The UE receives a configuration of an active downlink BWP for RedCap UEs. The UE determines whether to switch from the active downlink BWP to the shared initial BWP or the separate initial downlink BWP to obtain information such as updated system information, system measurements, and uplink configuration information.

Selection of different initial bandwidth parts for reduced capability user equipment

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a capability of the UE to support a restricted bandwidth for data signaling. The UE may receive an indication of a bandwidth part for control signaling and an indication of a set of frequency domain resources for the data signaling. The set of frequency domain resources may correspond to a subset of the bandwidth part in accordance with the restricted bandwidth. The UE may communicate the control signaling over the bandwidth part and data signaling over the set of frequency domain resources. In some cases, the bandwidth restriction may correspond to a bandwidth size for the set of frequency domain resources or a number of resource blocks in the set of frequency domain resources.

Frequency resource allocation for reduced capability devices

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media for a user equipment (UE), which may include a reduced capability (RedCap) UE, and a supporting cell. The UE may receive a synchronization signal block (SSB). The UE may receive a configuration of an active downlink bandwidth part (BWP) that is not configured with a SSB. The UE may tune, from the active downlink BWP to a different frequency for a layer 1 (L1) measurement gap defined by a L1 measurement gap configuration. The UE may perform a L1 measurement of the SSB on the different frequency during the L1 measurement gap. The UE may be a RedCap UE, the active BWP may be for RedCap UEs, and the SSB may define an initial BWP for the RedCap UEs and non-RedCap UEs, and the different frequency may be the initial BWP.

Measurement gaps for L1 measurements

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a message that indicates a first initial uplink bandwidth part for use by the UE in communications with a network entity, the message also indicating a plurality of random access occasions, at least one of the plurality of random access occasions being in frequency resources that are outside of the first initial uplink bandwidth part. The UE may select a random access occasion of the plurality of random access occasions for transmission of a random access preamble from the UE to the network entity. The UE may transmit, as part of a random access procedure, the random access preamble within the random access occasion.

Bandwidth part configuration for reduced capability devices

Certain aspects of the present disclosure provide techniques for a physical downlink control channel (PDCCH) ordered random access channel (RACH) procedure. The RACH procedure may be associated with a cell-defining synchronization signal block (SSB) or non-cell-defining SSB. A method for wireless communications by a user equipment (UE) includes transmitting an indication of one or more capabilities of the UE, receiving a PDCCH that orders the UE to perform a RACH procedure on an uplink carrier based on the one or more capabilities of the UE, determining a minimum gap between a last symbol of the PDCCH and a first symbol of a RACH message, wherein the minimum gap includes a half-duplex (HD) switching delay, and performing the RACH procedure on the uplink carrier when a gap between the last symbol of the PDCCH and the first symbol of the RACH message is equal to or larger than the minimum gap.

PDCCH ordered random access channel procedure for reduced capability user equipment

There is a need for a beam tracking technique that reduces the time needed to perform a beamforming procedure and that reduces beam overhead. The apparatus may determine a mapping between a first beam associated with a first type of channel and a second beam associated with a second type of channel. In an aspect, the first type of channel may be different than the second type of channel. The apparatus may receive the first beam associated with the first type of channel and the second beam associated with the second type of channel. In an aspect, the first beam and the second beam may be received from a second device.

Mapping between a control beam and a data channel beam

In an embodiment, a first node receives, from a second node, a plurality of beams. The first node determines a time of arrival of each beam of the plurality of beams. The first node identifies, from the plurality of beams, one or more first beams of interest for a positioning procedure based on the times of arrival of the plurality of beams. The first node determines a first reference timing based on the time of arrival for a given beam among the identified one or more first beams of interest. The first node sends, to the second node, a positioning beacon in accordance with the first reference timing.

Determining transmission timing of a positioning beacon from a time of reception of a reference signal

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform a random access (RACH) procedure based on a selected synchronization signal block (SSB). During this RACH procedure, a base station may transmit physical downlink control channel (PDCCH) messages for UE RACH message handling. To receive PDCCH signaling for RACH Messages 2, 3, or 4 (Msg 2/3/4), the UE may identify a set of time resources used by the base station for transmitting SSBs that are not quasi-co-located (QCL) with the selected SSB. The UE may identify a Msg 2/3/4 search space that does not overlap with this identified set of resources, and may monitor this identified search space. The search space may correspond to a modified remaining minimum system information (RMSI) search space indicated by the base station, or a valid RMSI search space not indicated by the base station.

Search space configurations for random access messaging

Methods, systems, and devices for wireless communications are described. A synchronization signal block (SSB) may be dynamically scheduled within an operating bandwidth of a user equipment (UE), where the operating bandwidth of the UE is outside of a frequency resource in which a cell defining SSB (CD-SSB) is scheduled. For example, a UE may operate in a reduced capability mode or an enhanced reduced capability mode where the UE may operate in a narrower bandwidth than the serving cell bandwidth. Control signaling may dynamically configure an SSB for the UE within the operating bandwidth of the UE. The UE may monitor for the non-cell defining SSB (NCD-SSB) and skip monitoring for the CD-SSB based on the dynamically configured NCD-SSB. For example, a reduced capability UE or an enhanced reduced capability UE may monitor for the NCD-SSB without performing RF retuning between receiving the control signaling and monitoring for the NCD-SSB.

Techniques for configuring bandwidth parts and synchronization signal blocks

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a synchronization signal block (SSB) burst set that includes a plurality of SSBs, a majority of the SSBs in the SSB burst set having an SSB symbol and a corresponding physical broadcast channel (PBCH) symbol that is located a fixed number of symbols from the SSB symbol. The UE may obtain a location of the PBCH symbol based at least in part on the fixed number of symbols. Numerous other aspects are described.

Physical broadcast channel and synchronization signal block signaling

Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support random-access occasion (RO) selection for reduced-capability (RedCap) user equipment (UEs). A RedCap UE operating in a half-duplex mode may use the techniques described herein to efficiently select an RO in which to transmit a random-access preamble based on a duration between a latest received downlink transmission and the RO satisfying a threshold duration. The UE may receive system information mapping a set of synchronization signal blocks (SSBs) to a set of ROs. The UE may then select an RO from the set of ROs in which to transmit the random-access preamble such that the UE has sufficient time to transition from a receive mode to a transmit mode to transmit the random-access preamble.

Random-access occasion selection for reduced-capability user equipment

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may transmit a set of reference signals to a first wireless node; receive information identifying a transmit power capability of the first wireless node based at least in part on transmitting the set of reference signals; and configure one or more transmission parameters for a first link with the first wireless node or a second link with a second wireless node based at least in part on the transmit power capability of the first wireless node. Numerous other aspects are provided.

Techniques for selecting an uplink beam

Growing community of inventors

Edison, NJ, United States of America

Muhammad Nazmul Islam