Abstract:
A central entity determines a physical cell identifier (PCI) change of an integrated access and backhaul (IAB) node from a first PCI to a second PCI and sends the second PCI to the IAB node. In response to receiving the second PCI from the central entity, the IAB node changes from using the first PCI to using the second PCI for the IAB node.
Abstract:
Methods, systems, and devices for wireless communications are described. In an integrated access and backhaul (IAB) network, a wireless node may receive an indication of a conditional handover configuration from a relay node. The conditional handover procedure may specify a set of trigger conditions for a conditional handover procedure supported by the relay node. The indication of the conditional handover may indicate a change of the cell from a first cell identifier to a second cell identifier. The wireless node may determine that a trigger condition of the set of trigger conditions is satisfied. The wireless node may then transmit, to the relay node, a random access message to initiate the conditional handover procedure for the cell from the first cell identifier to the second cell identifier.
Abstract:
When time locations of synchronization signal (SS) blocks (SSBs) are fixed within an SS burst set, the time locations and the slot pattern may be incompatible. In this case, the base station may not be permitted to transmit that SSBs that overlap in time with a configured uplink symbols because the base station is configured to receive uplink communications during this time, rather than transmit downlink communications during this time. As a result, the base station may have fewer opportunities to transmit SSBs, which may lead to increased latency due to delays in accessing the base station, may reduce spectral efficiency due to fewer opportunities to indicate beamforming parameters and/or fewer beams being used for communications, and/or the like. Some techniques and apparatuses described herein permit the base station to flexibly configure time locations of SSBs within an SS burst set, thereby reducing latency, improving spectral efficiency, and/or the like.
Abstract:
Methods, systems, and devices for wireless communications are described that support resource utilization based event triggering. A wireless node in a wireless communications system may establish a connection with a core network via a path that includes one or more relay nodes. The wireless node may determine that a network load associated with one or more paths between the wireless node and the core network has changed, or that a difference between two or more network loads of different paths has changed. Based on such a determination, the wireless node may transmit a report to the network. In some cases, the network may receive the report from the wireless node, and may initiate a path change based on the report.
Abstract:
An access node may monitor for uplink and downlink resource release indications signaled by a parent access node and a child access node prior to scheduling a released resource. In some cases (e.g., when the child node is capable of half-duplex communications), the parent access node may determine to release a resource, and the child access node may determine to release a hard resource (e.g., a child node controlled resource). Receiving uplink and downlink resource release indications may enable the access node to schedule communication with the child node via a soft resource (e.g., a parent node controlled resource). Other aspects of the described techniques are directed to feedback support for a slot format indicator (SFI). The feedback from the access node may accept or reject the SFI based on an impact the SFI has on scheduling via a child link established with a child node of the access node.
Abstract:
In some aspects, a node may configure whether a set of soft time resources is to be conditionally released or unconditionally released. The set of soft time resources may be configurable in a schedulable state or a non-schedulable state. The set of soft time resources may be schedulable subject to at most a directionality constraint when unconditionally released and, when conditionally released, being schedulable subject to: the directionality constraint and one or more conditions other than the directionality constraint if the set of soft resources is configured subject to the directionality constraint, or at least one of the directionality constraint or the one or more conditions other than the directionality constraint if the set of soft resources is not configured subject to the directionality constraint. The node may transmit a configuration that indicates whether the set of soft time resources is conditionally released or unconditionally released in the schedulable state.
Abstract:
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may identify a scaling factor associated with determining a periodicity of backhaul physical random access channel (PRACH) resources. The wireless communication device may determine, based at least in part on the scaling factor, the periodicity of the backhaul PRACH resources. The periodicity of the backhaul PRACH resources may be extended as compared to a periodicity of access PRACH resources. Numerous other aspects are provided.
Abstract:
Apparatus and methods for wireless communications include determining a first echo cancellation metric indicative of a first amount of echo cancellation as a first function of a first transmit power of a first wireless communications device; and providing the first echo cancellation metric to a scheduling entity for scheduling full duplex (FD) or half duplex (HD) communication resources for the first wireless communications device.
Abstract:
A method, an apparatus, and a computer program product for providing full duplex (FD) wireless communication to an FD capable (FDC) user equipment (UE) among one or more UEs include determining allocations of one or more resource blocks (RBs) to the one or more UEs, determining FD capabilities and scheduling parameters of the one or more UEs, determining at least one FD portion and at least one half duplex (HD) portion in the one or more RBs based on the FD capabilities and the scheduling parameters of the one or more UEs, wherein a concurrent downlink (DL) and uplink (UL) communication is scheduled in the at least one FD portion, and adjusting the allocations of the one or more RBs based on the at least one FD portion and the at least one HD portion.
Abstract:
An access point (e.g., a femto cell) that is connected in an active call with an access terminal may cooperate with that access terminal or another access terminal to derive timing information from one or more neighboring access points (e.g., macro access points). In addition, an access point may cooperate with an idle access terminal to derive timing information from one or more neighboring access points. For example, an access terminal may determine the difference between pilot transmission timing or frame transmission timing of a femto cell and a macro cell, and report this timing difference to the femto cell. Based on this timing difference, the femto cell may adjust the timing and/or frequency of its transmissions so that these transmissions are synchronized in time and/or frequency as per network operation requirements.