Abstract: Aspects of the present disclosure provide techniques for configuring and triggering conditional handover for UE mobility between a direct connection to the base station (Uu connection) and/or a relay connection (PC5 connection). Specifically, the conditional handover configuration may include preparing multiple candidate relay UEs for handover (e.g., from Uu connection to PC5 connection) and conditional handover execution criteria for relay selection (or reselection) for the UE. Similarly, features of the present disclosure provide techniques for conditional handover transition from a PC5 connection back to Uu connection when conditional handover execution criteria are met (e.g., sidelink signal strength between the two UEs falls below a channel condition threshold). Additionally, the techniques provided herein support for conditional handover of the relay UEs from a first base station to a second station while the relay UE is further supporting one or more remote UEs.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain a common key. The UE may communicate with one or more other UEs using a lower layer groupcast key that is based at least in part on the common key, a parameter, and at least one of a group identifier or a destination identifier. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote wireless communication device may receive an indication to support multiple paths for a protocol data unit (PDU) session. The remote wireless communication device may establish a multi-access PDU (MA-PDU) session with a network entity over a direct path. The remote wireless communication device may configure the MA-PDU session to include an indirect path via a relay wireless communication device and associated with a non-3GPP interworking function (N3IWF). The remote wireless communication device may communicate via the MA-PDU session. Numerous other aspects are described.

Abstract: Disclosed are techniques for wireless communication. In an aspect, a relay user equipment (UE) establishes a sidelink with a remote UE to provide one or more UE-to-network relay services to the remote UE, monitors paging occasions (POs) in a first bandwidth part (BWP), receives a page from a serving base station during a PO in the first BWP, and forwards the page to the remote UE over the sidelink in an initial sidelink BWP. In another aspect, the relay UE receives downlink control information (DCI) from a serving base station for a downlink grant for the remote UE, receives downlink data for the remote UE from the serving base station, transmits sidelink control information (SCI) instructing the remote UE to switch from a first sidelink BWP to a second sidelink BWP, and forwards the downlink data to the remote UE over the second sidelink BWP of the sidelink.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a relay user equipment (UE) may initiate a connection with a network entity. The relay UE may receive a layer 2 relay initial configuration based at least in part on initiating the connection. Numerous other aspects are provided.

Abstract: Conditional handover (CHO) configurations may include random access channel (RACH) configuration information (e.g., beam quality thresholds, beam quality threshold offsets, one or more beams associated with configured contention free random access (CFRA) resources, one or more beams associated with configured contention based random access (CBRA) resources, or some combination thereof). A user equipment (UE) may, upon detection that a handover condition in a CHO configuration has been satisfied, select a target cell beam for transmission of a random access request based on the RACH configuration information included in the CHO configuration. In various examples, the selected beam may correspond to a highest quality beam with a highest quality beam measurement value above the beam quality threshold, a beam with an earliest configured CFRA resource or an earliest configured CBRA resource (e.g., if a corresponding beam measurement at least falls within the beam quality threshold offset), etc.

Abstract: Certain aspects of the present disclosure are directed to a method for wireless communication. The method generally includes receiving a message for dual-active-protocol stack (DAPs) handover (HO) from a source network entity to a target network entity, wherein carrier-aggregation (CA) is configured with the source network entity prior to reception of the message for HO, deactivating the CA in response to reception of the message for handover (HO) to activate a single carrier mode with the source network entity, and performing the HO from the source network entity to the target network entity during a HO period, wherein the single carrier mode is maintained with the source network entity during at least a portion of the HO period, and wherein connection with the target network entity is maintained during the at least the portion of the HO period.

Abstract: Certain aspects of the present disclosure provide techniques for paging in sidelink L2 relay scenarios. An example method generally includes connecting, via a sidelink, to a relay user equipment (UE) connected to a network entity; receiving, from a network entity via the relay UE, configuration information identifying a paging mode for the remote UE; and monitoring for paging from the network entity, in accordance with the identified paging mode.

Abstract: Certain aspects of the present disclosure provide techniques for system acquisition in sidelink relay scenarios. An example method for adaptive paging by a relay node generally includes connecting, via a sidelink, to a remote user equipment (UE) while the relay node is also connected to a network entity, receiving, from the network entity, system information block (SIB) information, and sending the SIB information to at least the remote UE.

Abstract: Certain aspects of the present disclosure provide techniques for paging in sidelink L2 relay scenarios. An example method generally includes connecting, via a sidelink, to a relay user equipment (UE) connected to a network entity; receiving, from a network entity via the relay UE, configuration information identifying a paging mode for the remote UE; and monitoring for paging from the network entity, in accordance with the identified paging mode.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a remote user equipment (UE) may establish, via a sidelink signaling interface, a unicast link between the remote UE and a relay UE; establish a connection with a base station via the relay UE, wherein a message associated with establishing the connection is communicated via the unicast link; establish one or more bearers based at least in part on a radio bearer configuration received from the base station via the connection; establish, with the relay UE, one or more sidelink access stratum entities for the one or more bearers using one or more sidelink radio resource control messages based at least in part on an access stratum configuration received from the base station via the connection; and receive or transmit control-plane or user-plane traffic via the one or more bearers.

Abstract: Aspects of the disclosure relate to discovery in a wireless communication network. According to one aspect, a user equipment (UE) may determine to use a service associated with a sidelink communication, determine a contents of a discovery message including an indication of the message being the discovery message for the service, and determine a sidelink resource for use to transmit the discovery message. The UE may then transmit over a user plane using the determined sidelink resource the discovery message including the indication of the message being the discovery message for the service. Other aspects, embodiments, and features are also claimed and described.

Abstract: Certain aspects of the present disclosure provide techniques for adaptive paging in sidelink relay scenarios. An example method for adaptive paging by a remote UE generally includes connecting, via a sidelink, to a relay node connected to a network entity, sending an indication of a preferred paging mode to at least one of the relay node or the network entity, and monitoring for paging in accordance with the preferred paging mode, if the UE receives signaling configuring the UE for the preferred paging mode.

Abstract: Methods, systems, and devices for wireless communications are described. A first user equipment (UE) (e.g., a relay UE) may establish a relay connection for routing communications between a network entity (e.g., a base station) and a second UE (e.g., a remote UE). The relay connection may include a sidelink connection and an access link connection. The remote UE may transmit a request to the network entity via the relay UE. The request may include a relay service code associated with the sidelink connection, as well as a request for quality of service (QoS) support for the relay connection. Based on the request, the network entity may determine a QoS configuration for the relay connection. The network entity may indicate the QoS configuration to the UEs via the relay connection. The UEs may adjust parameters of the relay connection to meet the specifications of the QoS configuration.

Abstract: Apparatus, methods, and computer program products for disaggregated UE are provided. An example method includes establishing, with a second UE, a connection session based on a configuration profile, the configuration profile including a mapping of an upper-layer protocol to a lower-layer protocol, one or more security policies, and a routing for one or more services associated with the second UE to a protocol stack. The example method further includes managing a connection between the second UE and a third device via the connection session.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) to be scheduled by a scheduler UE in a sidelink system may transmit a first scheduling request (SR) to request sidelink resources. The UE may transmit the first SR via a set of feedback resources. The scheduler UE may transmit, to the UE, a sidelink control message to schedule a sidelink transmission. The sidelink control message may indicate a set of feedback resources mapped to the sidelink transmission. The UE may transmit the scheduled sidelink transmission based on the sidelink control message and may request additional sidelink resources. The UE may transmit a second SR, where the second SR is transmitted via the set of feedback resources mapped to the sidelink transmission.

Abstract: Certain aspects of the present disclosure provide techniques for switching between a first path and a second path when certain selection criteria are met. The first path may be a Uu connection whereby the remote UE is connected directly to a network entity. The second path may be a connection whereby the remote UE is connected to the network entity (i.e., indirectly) via a relay UE (e.g., by a PC5 connection).

Abstract: Certain aspects of the present disclosure provide techniques for coordinated sidelink power savings configurations. A wireless node may select a sidelink power savings configuration to use for a sidelink between the wireless node and a user equipment (UE), provide the selected configuration to the UE, and follow the configuration for the sidelink. The selection may be based on input from the UE or without input from the UE. The selection may be a current power savings configuration at the wireless node, a power savings configuration suggest by the UE, or a different power savings configuration determined by the wireless node based on the current and suggested power savings configuration. When a new UE connects to the wireless node, the wireless node may reselect a power savings configuration to use for the sidelinks and provide the reselected power savings configuration to the UEs having a sidelink with the wireless node.

Abstract: In one aspect, a remote device generates data for transmission to a network based on an application, selects one of a set of data routing options for routing the data to the network based on policy control information; each of the set of data routing options includes routing the data via a relay device; and transmits the data to the relay device for routing the data via the selected data routing option. In another aspect, a relay establishes a protocol data unit (PDU) session with a network for relaying data received from a remote device based on policy control information, receives data from the remote device, and transmits the data to a base station coupled to the network via the PDU session. Another aspect relates to the base station operation with respect to the above aspects.

Abstract: A sidelink node has a distributed processing architecture for wireless communications. The sidelink node comprising a central unit configured to perform sidelink node functions. The sidelink node also comprises distributed units including a first distributed unit and a second distributed unit. Each distributed unit is coupled to the central unit and controlled by the central unit. Each distributed unit is configured to perform a subset of the sidelink node functions. The sidelink node comprises radio units including a first set of radio units coupled to and controlled by the first distribution unit and a second set of radio units coupled to and controlled by the second distribution unit. Each radio unit is configured for sidelink transmission and reception.