Qualcomm Incorporated

Hamed Pezeshki

Tao Luo

Yan Zhou

Sony Akkarakaran

Taesang Yoo

Arumugam Chendamarai Kannan

Mahmoud Taherzadeh Boroujeni

Xiaoxia Zhang

Konstantinos Dimou

Mostafa Khoshnevisan

Jingchao Bao

Seyed Ali Akbar Fakoorian

Junyi Li

Kazuki Takeda

Eren Balevi

Ajay Gupta

Juan Montojo

Wooseok Nam

Srinivas Yerramalli

Rajat Prakash

Vinod Viswanatha Menon

Jing X Sun

Xiao Feng Wang

Hua Wang

Aziz Gholmieh

Qiang Wu

Seyedkianoush Hosseini

Peter S Gaal

Joseph Binamira Soriaga

Vinay Joseph

Jung Ho Ryu

Mohamed Fouad Ahmed Marzban

Philip Aaron Sisk

Jelena Damnjanovic

Tianyang Bai

Kiran Venugopal

Vinay Chande

Yong Li

Ruhua He

Lei Xiao

Mohamed Marzban

Arash Behboodi

Fabio Valerio Massoli

Certain aspects of the present disclosure provide techniques for reporting and responding to beam failure events based on a receiving cell restriction rule. An example method includes detecting an occurrence of a threshold number of beam failures for a connection between the UE and a set of cells; identifying a candidate beam for restoring the connection between the UE and the set of cells in response to detecting the occurrence of the threshold number of beam failures; transmitting, to one or more cells in the set of cells, a beam failure recovery (BFR) request including an identification of the candidate beam; receiving, from a cell in the set of cells, a BFR response in response to transmitting the BFR request, wherein the BFR response is received according to a restriction rule; and resuming communications with the set of cells based on the BFR response.

Beam failure report response receiving cell restriction rule

A parameter server located at a base station may coordinate federated learning among multiple user equipment (UEs) using over-the-air (OTA) aggregation with power control to mitigate aggregation distortion due to amplitude misalignment. The parameter server may select a first group of UEs for a first OTA aggregation session of a federated learning round based on a common received power property of each UE in the first group of UEs. The parameter server may transmit a global model to the first group of UEs. Each UE in the first group may train the global model based on a local dataset and transmit values associated with the trained local model. The parameter server may receive, on resource elements for the first group of UEs, a first aggregate amplitude modulated analog signal representing a combined response from the first group of UEs.

Power control in over the air aggregation for federated learning

Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for reporting content processing times to a base station to allow the base station to efficiently schedule bi-directional communications one or more UEs. A content processing time may correspond to the time taken by a UE to process one or more downlink signals received in one or more downlink transmissions. In some examples, the UE may report a content processing time for each downlink transmission. In some examples, the UE may report one or more content processing times for multiple downlink transmissions. The base station may use the content processing times to configure an appropriate gap between downlink and uplink transmissions such that the UE may have sufficient time to process downlink signals before transmitting one or more uplink transmissions in response to the one or more downlink transmissions.

UE feedback of content processing time for bi-directional traffic

Some aspects described herein relate to transmitting, by a first node to a second node, indications of one or more groups of component carriers (CCs) that share a beamformer at the first node. Some aspects additionally or alternatively relate to receiving, by the first node from the second node, indications of one or more groups of CCs that share a beamformer at the second node. The nodes may beamform antenna resources for communications based on the indications.

Techniques for beamforming for multiple component carriers in wireless communications

A UE may identify a plurality of local model update elements associated with an updated local machine learning model. The updated local machine learning model may have been generated based on a global machine learning model received from a base station and a local dataset. The UE may identify one or more local model update elements of the plurality of local model update elements for update element dropping based on at least one of a channel gain, a PAPR specification, an RF emission specification, or an RF condition. The UE may transmit, to the base station over a multiple access channel via analog signaling, at least some local model update elements of the plurality of local model update elements based on dropping of the identified one or more local model update elements.

Gradient dropping for federated learning

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may measure one or more linear combinations, of a set of beams, from a radio access network (RAN) node. Accordingly, the UE may transmit a report, based at least in part on measuring the one or more linear combinations, to the RAN node. The one or more linear combinations may be indicated in one or more rules stored in a memory of the UE or may be indicated in a system information block or a radio resource configuration message. Numerous other aspects are described.

Measurements of linear combinations of beams

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with multiple transmission reception points (TRPs). The UE may receive control signaling indicating a reference signal configuration. The reference signal configuration, the control signaling, or both may indicate one or more beam failure detection (BFD) reference signals and a quasi co-location (QCL) type associated with a set of BFD reference signal sets. Each BFD reference signal set of the set of BFD reference signal sets may be associated with a respective TRP. The UE may detect a beam failure based on receiving a BFD reference signal set using one or more beams according to the QCL type associated with the BFD reference signal set. The UE may initiate a beam failure recovery procedure based on detecting the beam failure.

Techniques for beam failure detection reference signals

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive control signaling indicating a beam update configuration that defines a timing for updating a common beam for communications with the UE in relation to a communication and in response to a downlink control information (DCI) message that schedules the communication and indicates an update to the common beam. In some aspects, the common beam is shared across a set of channels, a set of reference signals, or both. The UE may then receive, from a base station, the DCI message that schedules the communication and indicates the update to the common beam. The UE may then perform at least one beam switching procedure to update the common beam at the UE based on receiving the DCI message and in accordance with the beam update configuration.

Techniques for common beam update rules for scheduled communications

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine that a failure event for a beam or a link, between the UE and a base station, is occurring or will occur, and transmit a message to the base station indicating that the UE is refraining from performing a recovery procedure for the beam or a link for a time duration. Numerous other aspects are provided.

Suspension of beam or link recovery for a failure event

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive control signaling from a network node indicating a reference signal (RS) configuration for RS measurements. The RS configuration may indicate a first set of beams, a first periodicity for measuring RSs on the first set of beams, a second set of beams, and a second periodicity for measuring RSs on the second set of beams. The UE may monitor a wireless channel for a first set of RSs communicated via the first set of beams according to the first periodicity and monitor the wireless channel for a second set of RSs communicated via the second set of beams according to the second periodicity. The UE and the network node may dynamically update one or more of the beam sets, periodicities, or both, to perform RS measurements.

Reference signal periodicities for multiple sets of beams

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine an update resolution associated with providing, to a base station during a federated learning procedure, an update associated with a machine learning component. The UE may transmit the update to the base station based at least in part on the update resolution. Numerous other aspects are provided.

Update resolution signaling in federated learning

In one aspect, a method of wireless communication includes receiving, by a mobile communication device during a first cycle, a periodic grant via a first carrier of a plurality of carriers, monitoring, by the mobile communication device during a next cycle after the first cycle, for configured grants (CGs) for multiple carriers of the plurality of carriers based on the periodic grant, and receiving, by the mobile communication device during the next cycle after the first cycle, a first transmission in a first CG of the CGs via a second carrier of the plurality of carriers and a second transmission in a second CG of the CGs via a third carrier of the plurality of carriers. Other aspects and features are also claimed and described.

Cross carrier activation of a periodic grant

Aspects relate to wireless communication on multiple component carriers. In some examples, a user equipment (UE) may selectively apply transmission configuration indicator (TCI) information and/or spatial relation information received via a medium access control-control element (MAC-CE) to component carriers. In some examples, a UE may apply the TCI information and/or spatial relation information included in a MAC-CE to multiple component carriers if the UE has been configured with a list that includes the component carriers (and, optionally, if a component carrier identified by the MAC-CE is a member of the list of component carriers). If the above condition is (or conditions are) not met, the UE applies the TCI information and/or spatial relation information included in the MAC-CE to the component carrier identified by the MAC-CE.

Enablement of simultaneous beam update across component carriers

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station (BS), a channel state information reference signal (CSI-RS) communication; and transmit, to the BS, a physical uplink control channel communication including feedback information that is a response to the CSI-RS communication and including an interference measurement. Numerous other aspects are provided.

Sub-band interference level indication using physical uplink control channel communication

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for a semi-persistent scheduling (SPS) of a data transmission that rate matches the data transmission around one or more resource elements that are to be used for a cell-specific reference signal pattern. The UE may receive an SPS communication based at least in part on the configuration. Numerous other aspects are provided.

Growing community of inventors

San Diego, CA, United States of America

Hamed Pezeshki