Qualcomm Incorporated

Punyaslok Purkayastha

Ozcan Ozturk

Gavin Bernard Horn

Karthika Paladugu

Xipeng Zhu

Aziz Gholmieh

Tao Luo

Jelena Damnjanovic

Fatih Ulupinar

Olufunmilola Omolade Awoniyi-Oteri

Peng Cheng

Luis Fernando Brisson Lopes

Rajeev Kumar

Shankar Krishnan

Masato Kitazoe

Ravi Agarwal

Huichun Liu

Yan Zhou

Rajat Prakash

Tom Chin

Kazuki Takeda

Linhai He

Sven Fischer

Shailesh Maheshwari

Rohit Kapoor

Gene Wesley Marsh

Daniel Amerga

Peter Anthony Barany

Vanitha Aravamudhan Kumar

Yinian Mao

Kundan Kumar Lucky

Junyi Li

Peter S Gaal

Wanshi Chen

Juan Montojo

Sony Akkarakaran

Alberto Rico Alvarino

Hung Dinh Ly

Peter Pui Lok Ang

Hong Cheng

Umesh Phuyal

Sai Yiu Duncan Ho

Miguel Griot

Reza Shahidi

Prasad Reddy Kadiri

Dan Vassilovski

Michael G Luby

Bibhu P Mohanty

Changhwan Park

Etan Gur Cohen

Lorenz Christoph Minder

Brian Kelley

Kurt William Otte

Deviprasad Putchala

Robert G Walker

Kurt Otte

Methods, systems, and devices for wireless communications are described, in which temporary reference signals may be configured for use in secondary cell (SCell) activation. A user equipment (UE) may perform wireless communications with a first serving cell supported by a base station, and may receive an indication that a SCell is to be activated. As a result of activation of the SCell, the UE may perform one or more measurements on a reference signal of the SCell that is being activated. The one or more measurements may be performed on a temporary reference signal of the SCell that has one or more parameters that are indicated to the UE with the SCell activation information. The one or more parameter may be indicated by downlink control information (DCI), one or more medium access control (MAC) control elements, implicit signaling, or any combinations thereof.

Reference signal configuration for secondary cell activation

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive a measurement configuration including trigger conditions for performance of handover procedures within a service-based wireless system. The UE may transmit a message indicating a satisfaction of a trigger condition to a source network entity, a mobility service offered by a service-based network, or both. After performance of a handover decision by the source network entity, the mobility service, or both, the mobility service may select a target network entity for the handover procedure. The mobility service may select a target network entity that supports at least one active core network service at the UE. The UE may then receive a handover command from the mobility service, and may perform a handover procedure to the target network entity.

Techniques for connected state mobility in a service-based wireless system

This disclosure provides systems, methods and apparatuses for early measurement associated with configuring with multiple secondary nodes (SNs). In one aspect, the configuration of multiple SNs may be improved by allowing a master node (MN) to determine a multi-SN configuration based at least in part on measurements of actual channel conditions as seen by the UE. Enabling the MN to receive the measurement information early during a process associated with establishing a connection between the UE and the MN may thereby improve efficiency and reduce latency associated with the configuration of multiple SNs.

Radio (NR) early measurement with multiple secondary nodes (multi-SNs)

A method of wireless communication for a user equipment (UE) includes entering a dormancy period for a secondary cell group (SCG) of a base station (BS) during which no downlink (DL) data or control transmissions are received from the SCG; performing a channel state information (CSI) measurement on the SCG during the dormancy period to generate a measurement report; determining an uplink (UL) beam of a primary secondary cell (PSCELL) of the SCG; transmitting the measurement report to the BS on the UL beam of the SCG; and determining, during the dormancy period and after transmitting the measurement report, one or more downlink (DL) beams for communicating on the SCG based on one or more rules and based on the measurement report, wherein the one or more rules result in the BS determining the same one or more DL beams based on the measurement report.

Beam updates during a secondary cell group (SCG) dormancy period

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform radio link monitoring (RLM) reference signal measurements on a primary secondary cell (PSCell) while the UE is operating in a secondary cell group (SCG) deactivated state. The UE may perform beam failure detection (BFD) reference signal measurements while the UE is operating in the SCG deactivated state. The UE may transmit, to a master node associated with a master cell group (MCG), an SCG failure information message based at least in part on one of: a PSCell radio link failure (RLF) detection based at least in part on the RLM reference signal measurements, or a BFD based at least in part on the BFD reference signal measurements. Numerous other aspects are described.

User equipment communications while operating in a secondary cell group deactivated state

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive, via a first serving cell, a message including an indication to activate a second serving cell different from the first serving cell. The UE may receive, via the first serving cell, a control message indicating a first resource for transmitting a response message responsive to the message, and triggering a reference signal associated with time and frequency tracking for the second serving cell. The UE may transmit, via the first serving cell and within the first resource indicated via the control message, the response message acknowledging the message. The UE may then monitor a second resource of the second serving cell for the reference signal based on the control message.

Techniques for direct secondary cell activation using temporary reference signals

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, information identifying a set of conditional configurations for a set of possible target cells associated with a first communication procedure, wherein the set of conditional configurations are associated with a master cell group or a secondary cell group. The UE may communicate with the network node or another network node in accordance with a conditional configuration, of the set of conditional configurations, associated with a second communication procedure. Numerous other aspects are described.

Configuration management for multiple configuration communication scenarios

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a primary cell or a primary secondary cell (PSCell), configuration information for a conditional PSCell addition or change (CPAC), the configuration information indicating configurations for one or more candidate PSCells. The UE may detect a failure, associated with the conditional PSCell addition or change, associated with a first target PSCell from the one or more candidate PSCells. The UE may perform an action to recover the CPAC based at least in part on detecting the failure. Numerous other aspects are described.

Conditional primary secondary cell addition or change recovery procedure

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may initiate one of a conditional handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure. The UE may perform a response action with regard to a configuration of the other of the CHO procedure or the CPAC procedure based at least in part on initiating the one of the CHO procedure or the CPAC procedure. Numerous other aspects are described.

Handling of conditional handover and conditional primary secondary cell change

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a master node (MN) may receive a message indicating that a user equipment (UE) has determined that a condition for a conditional primary secondary cell (PSCell) change has been satisfied for a candidate target PSCell. The candidate target PSCell may be one of a set of candidate target PSCells associated with the UE in a conditional PSCell change configuration provided by a base station. The MN may transmit, to a source secondary node, a confirmation message associated with the conditional PSCell change. Numerous other aspects are provided.

Signaling aspects of a conditional primary secondary cell change procedure in multi-radio access technology dual connectivity

The described techniques relate to improved methods, systems, devices, and apparatuses that support multi-secondary cell group configurations. Generally, the described techniques provide for a configuration that enables a user equipment (UE) to perform multiple conditional primary and secondary cell (PSCell) addition or change procedures. For instance, the UE may perform a series of conditional PSCell changes and/or conditional PSCell additions based on a single configuration provided by a network entity. In such cases, the single configuration may be based on a subset of secondary nodes (secondary nodes) that are identified by one or more target secondary nodes. In some aspects, the single configuration may include an indication that the configuration may be used for multiple PSCell changes or additions, and the UE may store the configuration based on the indication.

Techniques for configuring multiple secondary cell groups

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may support dual connectivity. That is, the UE may establish communications with a master node and a secondary node of a wireless communications network. The master node may correspond to a master cell group (MCG) and the secondary node may correspond to a secondary cell group (SCG). In some examples, as described herein, the UE operating in dual connectivity may collect data for optimization of the wireless communications network or upon detecting a failure associated with the master cell group or the SCG and transmit the collected data to a network entity (e.g., one of the master node or the secondary node), where the collected data is based on the SCG being in a deactivated state. In some examples, upon receiving the collected data, the network entity may attempt to recover from the failure.

Data collection enhancements for secondary cell groups

The present disclosure provides systems, methods, and apparatuses for maintaining continuity of a buffer status report (BSR) from a user equipment (UE) when the UE is handed over between base stations. In one aspect, a base station or a component thereof may be configured to allocate a set of resources for transmission by a UE. The set of resources may have a capacity that is insufficient for an amount of data indicated by a BSR from the UE. The base station or component thereof may be further configured to transmit, to another base station in association with handover of the UE, an indication that the capacity of the set of resources is insufficient for the amount of the data indicated by the BSR.

Continuity for buffer status reports

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine to transmit a pre-allocated uplink (UL) grant to a user equipment (UE), wherein the pre-allocated UL grant includes: a secondary node (SN) transmission configuration indicator (TCI) list, and a type 1 configured grant (CG). The base station may transmit, to the UE, the pre-allocated UL grant based at least in part on determining to transmit the pre-allocated UL grant. Numerous other aspects are provided.

Random access channel (RACH)-less procedure

A source network node and a UE may obtain at least one mobility related prediction associated with the UE or at least one target network node, the at least one mobility related prediction being derived by at least one neural network, and the source network node may handover the UE from the source network node to the at least one target network node based on the at least one mobility related prediction. The target network node may receive the handover request, obtain at least one mobility related prediction associated with the UE or the target network node, and output for transmission a handover request ACK, the handover request ACK based at least in part on the at least one mobility related prediction.

AI/ML based mobility related prediction for handover

Growing community of inventors

San Diego, CA, United States of America

Punyaslok Purkayastha