Qualcomm Incorporated

Amer Catovic

Alberto Rico Alvarino

Lenaig Genevieve Chaponniere

Umesh Phuyal

Ayan Sengupta

Stefano M Faccin

Haris Zisimopoulos

Prasad Reddy Kadiri

Rajarshi Gupta

Bharat Shrestha

Stephen William Edge

Le Liu

Masato Kitazoe

Parag Arun Agashe

Mungal Singh Dhanda

Mohit Narang

Luis Fernando Brisson Lopes

Gavin Bernard Horn

Rajat Prakash

Karthika Paladugu

Liangchi Hsu

Wanshi Chen

Xiao Feng Wang

Fatih Ulupinar

Ajith Tom Payyappilly

Seyedkianoush Hosseini

Kazuki Takeda

Arvind Vardarajan Santhanam

Miguel Griot

Liangping Ma

Sitaramanjaneyulu Kanamarlapudi

Amir Farajidana

Charles Nung Lo

Tao Luo

Xiaoxia Zhang

Jing X Sun

Wooseok Nam

Mostafa Khoshnevisan

Hong Cheng

Tom Chin

Xipeng Zhu

Peerapol Tinnakornsrisuphap

Soo Bum Lee

Anand Palanigounder

Danlu Zhang

Osok Song

Sivaramakrishna Veerepalli

Suli Zhao

Francesco Pica

Osama Lotfallah

Andrea Garavaglia

Oronzo Flore

Waqar Zia

Long Duan

Mukesh Kumar Mittal

Mustafa Saglam

Mohamed A El-saidny

Supratik Bhattacharjee

Sebastian Speicher

Carlos Marcelo Dias Pazos

Peter Hans Rauber

Christophe Chevallier

Tae Min Kim

Alvin Siu-Chung Ng

Sunghoon Kim

Sunil Suresh Patil

Mohamed Abdelrazek El-Saidny

Jay F Dills

Jochen Hoidis

Chan Chun Chung Patrick

Juan Zhang

Ali Taha

Can Zhao

Manish Tripathi

Dario Serafino Tonesi

Rajiv R Nambiar

Rajasekar Arulprakasam

Chunchung Chan

Flavio De Angelis

Jay F Gills

Mukesh K Mittal

Carios Marcelo Dias Pazos

Patrick Chun Chung Chan

An apparatus for wireless communication includes a memory and a processor coupled to the memory. The processor is configured to send a data session establishment request to establish a data session with a network device using a wireless communication network. The data session establishment request has a first field to indicate a requested network slice for the data session. The processor is further to receive an indication of a granted network slice for the data session and to receive an indication of a back-off timer value from the network device. The processor is further configured, after expiration of a back-off timer based on the back-off timer value, to send a first message associated with the granted network slice and to send a second message having a second field corresponding to the first field of the data session establishment request.

Apparatus and method of wireless communication based on a back-off timer

Certain aspects of the present disclosure provide a method of wireless communication by a user equipment (UE). The method generally includes performing a mobility procedure to establish a connection in a target radio access technology (RAT) while maintaining a context established in a source RAT, wherein one of the source RAT or target RAT is a terrestrial network (TN) RAT and the other is a non-terrestrial network (NTN) RAT and sending a tracking area update (TAU) request after establishing the connection in the target RAT.

Handover between terrestrial network and nonterrestrial network

A method of wireless communication performs a public land mobile network (PLMN) search for a higher priority PLMN. The PLMN search includes a candidate PLMN having a different mobile country code (MCC) than a serving PLMN. The method switches to the higher priority PLMN when the PLMN search locates the higher priority PLMN. A method determines whether a user equipment (UE) has transitioned between an international area and a national area. The method triggers PLMN selection in response to the UE having transitioned between the international area and the national area.

Wireless network selection in international areas

A user equipment (UE) selects or reselects a target cell of a non-terrestrial network or resumes connectivity with the target cell after a satellite handover for a permanently fixed low Earth orbit (LEO) cell. The target cell is a serving or non-serving cell. The UE determines a cell type of the target cell. The cell type may be a LEO cell type, a geostationary Earth orbit (GEO) cell type, a moving cell type, a fixed cell type, a temporarily fixed LEO cell type, or a permanently fixed LEO cell type. The UE completes selection or reselection of the target cell or completes the connectivity with the target cell, based on the cell type.

Cell type selection for non-terrestrial networks

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive broadcast information from a base station indicating a numerology or a reference signal (RS) pattern to be used in broadcast or multicast transmissions (e.g., a physical multicast channel (PMCH)). The UE may identify a modulation and coding scheme (MCS) associated with the broadcast or multicast transmission and may determine a transport block size (TBS) based on the MCS and at least one of the numerology or the RS pattern. For instance, a UE may determine TBS for numerologies associated with a single symbol that spans multiple subframes differently from that of other numerologies. Additionally or alternatively, a UE may determine TBS for sparse RS patterns differently from that of other RS patterns. The UE may then perform communication with the base station via the broadcast or multicast transmissions in accordance with the TBS.

Multimedia broadcast multicast services with new numerologies and reference signal patterns

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network, a procedure rejection message for non-cellular access at a non-access stratum (NAS) layer, and provide a first congestion indication from the NAS layer to lower layers for non-cellular access based at least in part on the receiving the procedure rejection message. The UE may refrain, at the lower layers, from initiating establishment of a signaling connection based at least in part on the first congestion indication. Numerous other aspects are provided.

Non-access stratum congestion indications

Techniques are described to support call routing and location for a user equipment (UE) with satellite wireless access to a serving PLMN. The UE sends a Session Initiation Protocol (SIP) INVITE message to a network node, such as a P-CSCF, that includes an indication of satellite access for the UE. In response the network node sends a request to another network node for a cell ID for a fixed cell in which the UE is located. The fixed cell can be independent of satellite radio cells for the serving PLMN. The network node may receive the cell ID for the fixed cell and sends the SIP INVITE message to another network node (e.g., an E-CSCF or LRF) with the cell ID for the fixed cell. The other network node may use the cell ID to route the SIP INVITE message or obtain an approximate location of the UE.

Systems and techniques to support cell identification for satellite wireless access

A UE may include IoT NTN device, and the UE may acquire the GNSS location to perform the time/frequency pre-compensation. A NAS layer of the UE may initiate a connection request procedure based on the GNSS fix procedure at one or more lower layer of the UE. A network may transmit a paging request to the UE, and manage a paging response timer based on the GNSS fix procedure at the UE.

Location acquisition delay management

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may monitor one or more first conditions pertaining to non-cellular communications between the UE and a non-cellular network while the UE is operating in a dual networking mode for steering, switching, or splitting traffic (e.g., an access traffic steering, switching, and splitting (ATSSS) mode) between the non-cellular network and a cellular network. The UE may predict an availability status of at least the non-cellular network based on at least one of the one or more first conditions. In some cases, the UE may determine whether to change dual networking modes based on the availability status and may communicate in accordance with the same or a different dual networking mode using at least one of the cellular network, the non-cellular network, or a combination thereof based on the prediction.

Techniques for operating in accordance with a dual networking mode for steering, switching and splitting traffic

Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communication by a user equipment (UE). The method generally includes registering with a first public land mobile network (PLMN) of a first network operator in response to detection of an interruption event associated with a second PLMN of a second network operator; determining that the interruption event has ended; and taking one or more actions to communicate with the second PLMN in response to the ending of the interruption event, wherein taking the one or more actions to communicate with the second PLMN is based on a constraint associated with access attempts to the second PLMN.

Techniques for preventing overloading of public land mobile network (PLMN) subject to disaster

Disclosed are techniques for wireless communication using satellite access to a wireless network, where a wireless cell supported by a satellite is moving or temporarily fixed. In an aspect, a radio access network (RAN) entity or a user equipment (UE) provides, to a core network entity, an enhanced cell global identifier (CGI), where the enhanced CGI includes at least one field representing a location of the UE. Based on the enhanced CGI, the core network entity determines a location of the UE, and may provide a service to the UE based on the location. A core network may also provide an enhanced CGI to a RAN, e.g., to support wireless emergency alerting to UEs.

Support of fixed cells for user equipment access to a non-terrestrial network

Techniques for managing access combinations for multiple access protocol data unit (PDU) sessions are described. A communication device may receive control signaling indicating a configuration for a multiple access PDU session associated with a plurality of access links. The plurality of access links may be associated with a first type of access, a second type of access, or a combination thereof. The communication device may select a mode for allocation of a data flow associated with the multiple access PDU session to the plurality of access links based at least in part on the received control signaling. The communication device may allocate the data flow associated with the multiple access PDU session to the plurality of access links based at least in part on the selected mode, and transmit the allocated data flow over the plurality of access links associated with the two types of access.

Techniques for managing access combinations for multiple access protocol data unit sessions

Method and apparatus for blocking session management procedures for a network slice during an NSSAA procedure. The apparatus receives a network slice-specific authentication command for a network slice that is currently allowed. The apparatus determines that the network slice is being authenticated based on the received network slice-specific authentication command. The apparatus blocks session management procedures associated with the network slice based on the determination that the network slice is being authenticated.

Handling of slices subject to network slice specific authentication and authorization procedure

Certain aspects of the present disclosure provide techniques for slice-aware network selection. Particular aspects provide for a method for wireless communication performed by a user equipment (UE). The method generally includes obtaining, for one or more networks, network slicing information indicating one or more slice identifiers supported in the one or more networks, deriving a list of one or more preferred networks based, at least in part, on the network slicing information, and selecting a network to register with from the list of one or more preferred networks.

Slice-aware PLMN selection

Methods, systems, and devices for wireless communications are described. Generally, a base station may indicate in system information, or a user equipment (UE) may determine based on system information, which reference signal resources may be used for channel estimation for a given broadcast control channel. In some examples, a base station may configure and transmit reference signals having the same numerology as a broadcast control channel according to a first reference signal pattern during the same subframe in which the broadcast control channel is configured. The first reference signal pattern may be more dense than a second reference signal pattern used for reference signals having a different numerology than the broadcast control channel. The more dense first reference signal pattern may provide sufficient reference signals for successful single-symbol channel estimation, resulting in a successful decoding of the broadcast control channel.

Broadcast control channel decoding in dedicated carrier

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San Diego, CA, United States of America

Amer Catovic