Abstract:
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.
Abstract:
Certain aspects of the present disclosure provide techniques for handling a radio link failure timer in the presence of a conditional handover command. A method that may be performed by a user equipment (UE) includes receiving, from a serving cell, a conditional handover command for handing over the UE to a target neighbor cell, wherein the conditional handover command includes one or more triggering conditions for executing a handover to a candidate target cell; monitoring one or more first signals from the candidate target cell for the one or more triggering conditions; and performing one of: stopping a timer based on performing a conditional handover to the target candidate cell; or detecting a timer has expired while monitoring the one or more first signals from the candidate target cell for the one or more triggering conditions.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may provide, to a source base station (BS) and prior to a handover of the UE from the source BS to a target BS, information that identifies a set of transition capabilities of the UE. The UE may receive, from the source BS, a handover command or reconfiguration message after providing the information to the source BS. The UE may communicate, using a subset of the transition capabilities, with the target BS prior to the release. Numerous other aspects are provided.
Abstract:
This disclosure provides systems, methods and apparatus for determining a target base station timing advance value between a user equipment (UE) and target base station in connection with a random access channel (RACH)-less handover procedure. In one aspect, the UE may determine the target base station's timing advance based at least in part on a timing difference between the target base station and the source base station and based at least in part on a timing offset associated with an uplink and a downlink of the UE. In some aspects, the target base station may determine the timing advance using an uplink reference signal of the UE. In some aspects, the UE may report a timing difference between the target base station and the source base station, and the source cell may determine a timing advance based at least in part on the timing difference.
Abstract:
In an embodiment, a server mediates a first group communication session with the user equipment (UE) by exchanging media for the first group communication session with the UE over a first link with a first level of Quality of Service (QoS) resources (e.g., either without a guaranteed bit rate (GBR) or a threshold amount of GBR) and exchanging non-media signaling data for the first group communication session with the UE over a signaling link that is either the same or separate from the first link. The server detects, while the UE continues participation in the first group communication session, that the UE has joined or is attempting to join a second group communication session. The server applies a policy for selectively allocating additional QoS resources to supplement the first level of QoS resources to the UE for concurrently supporting both the first and second group communication sessions in response to the detection.
Abstract:
Methods, systems, and devices for wireless communication are described. A central unit (CU) of a network entity may receive, from a first user equipment (UE) via a second UE, a connection setup request message for a first UE. The CU may establish UE context information for the first UE at an adaptation layer of the CU, the CE context information based at least in part on communications between the first UE and the network entity via the second UE. The CU may transmit, to a distributed unit (DU) associated with the CU, an indication of a relaying configuration for the first UE connecting to the network entity via the second UE, the relaying configuration comprising multiplexing and forwarding information for a connection between the second UE the DU. The CU may communicate with the first UE via the second UE according to the UE context information and the relaying configuration.
Abstract:
Methods, systems, and devices for remote user equipment (UE) discovery and link establishment for reduced capability UE are described. In some examples, a relay UE may transmit one or more discovery messages associated with establishing a sidelink relay communication link between the relay UE and a remote UE having a reduced communication bandwidth capability relative to the relay UE. In such examples, the relay UE may perform a communication bandwidth configuration procedure with the remote UE based on the remote UE having the reduced communication bandwidth capability relative to the relay UE. In some examples, the relay UE and the remote UE may establish, in accordance with the communication bandwidth configuration procedure, the sidelink relay communication link between the relay UE and the remote UE using a reduced communication bandwidth that is less than a full communication bandwidth allocated for the relay UE.
Abstract:
Methods, systems, and devices for wireless communication are described. A first user equipment (UE) may transmit, to a base station, a first uplink message including one or both of a protocol layer source identifier associated with a second UE or a request for a local identifier associated with the second UE. The first UE may receive, from the base station, a first downlink message including a downlink signal radio bearer (DL SRB) message, and the DL SRB message including one or both of the protocol layer source identifier associated with the second UE or the local identifier associated with the second UE in a downlink adaptation layer header of the DL SRB message. The first UE may transmit, to the second UE, in a sidelink adaptation layer header of a sidelink message, the local identifier associated with the second UE based in part on the received first downlink message.
Abstract:
Methods, systems, and devices for wireless communications are described. A remote user equipment (UE) may establish a first connection with a relay UE that is in communication with a base station via a second connection. The first connection may be of a first connection type and the second connection may be of a second connection type. The remote UE may identify a mapping between one or more first quality of service (QOS) parameters corresponding to the first connection type and one or more second QoS parameters corresponding to the second connection type. The remote UE may determine, using the mapping, a first QoS parameter to be applied to the first connection as part of an end-to-end (E2E) connection with the base station via the relay UE, and communicate with the base station via the relay UE using the E2E connection.
Abstract:
To facilitate delivery of paging for remote UE, methods, apparatuses, and computer program products are provided. An example method of UE includes receiving, via a sidelink interface from a second UE, paging information. The example method further includes transmitting, to a base station, the paging information. The example method further includes receiving, from the base station, a RRC message comprising a paging record of at least one UE including the second UE. The example method further includes transmitting the paging record to the at least one UE including the second UE via the sidelink interface.