Abstract: A method, a computer-readable medium, and an apparatus are provided. The apparatus may be an IAB node. The apparatus may receive communication from one or more of a parent IAB node or a child IAB node using a first frequency carrier of a paired spectrum comprising the first frequency carrier and a second frequency carrier. The apparatus may transmit communication to the one or more of the parent IAB node or the child IAB node using the second frequency carrier in the paired spectrum. At least one of the first frequency carrier or the second frequency carrier in the paired spectrum carries both uplink and downlink communication.

Abstract: Systems, devices, and methods for performing coordinated clear channel assessments (CCAs) in a shared radiofrequency band are provided. In one aspect, a method of wireless communication performed by a first wireless communication device includes: receiving a control signal indicating a CCA trigger associated with the first wireless communication device and a second wireless communication device; performing, based on the CCA trigger, a CCA; transmitting, to the second wireless communication device based on the CCA, a first CCA success signal; receiving, from the second wireless communication device, a second CCA success signal; initiating, based on the first CCA success signal and the second CCA success signal, a channel occupancy time (COT); and amplifying and forwarding a communication in the COT.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network node may receive, from a first integrated access and backhaul (IAB) donor central unit (CU), information indicating a first resource configuration used by an IAB node that has a first connection with a first parent IAB node that is a child of the first IAB donor CU. The first network node may transmit, to a second parent IAB node that is a child of the first network node, the information. Numerous other aspects are described.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a network node may transmit, to an integrated access and backhaul (IAB) donor central unit (CU), information indicating a cell served by the network node and associated with another CU. The network node may receive, from the IAB donor CU, a distributed unit (DU) cell resource configuration for the cell. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communications are described. The network may manage access to a cell on a per-beam basis. The network may indicate, for a given beam, whether a user equipment (UE) is able to access the cell via the given beam. Accordingly, the UE may access a cell using a beam that is not barred for the UE. In some examples, control signaling may include a list of each beam associated with the cell and may indicate whether each beam is barred or accessible. In some examples, control signaling include a field indicating whether the particular beam on which the control signaling was transmitted is barred. In some examples, control signaling may indicate whether a cell is barred. The UE may interpret the indication of whether the cell is barred as indicating whether the beam on which the control signaling was transmitted is barred.

Abstract: Methods, systems, and devices for wireless communications are described. Idle discontinuous reception (I-DRX) configurations may be managed on a per beam or a per subset of beams basis. The network may indicate, via system information, the I-DRX configuration for a given beam or subset of beams. A user equipment (UE) in an idle mode may receive paging occasions via the given beam in accordance with the indicated I-DRX configuration for that beam. In some examples, system information may indicate a list of beams and corresponding I-DRX configurations for each beam in the list of beams. In some examples, system information may indicate the I-DRX configuration for the beam on which the system information is transmitted. If a UE changes beams, the UE may receive system information via the new beam that indicates an I-DRX configuration for the new beam before applying the I-DRX configuration to the new beam.

Abstract: Methods, systems, and devices for wireless communication are described. For example, a user equipment (UE) may receive a paging indication over a physical downlink control channel. The UE may determine a position of the UE relative to a network entity. The UE may determine, based on the position of the UE, a subset of beams available to the network entity for transmitting a paging message. The subset of beams may be less than a quantity of beams available to the network entity for transmitting the paging message and a coverage area of the subset of beams may include the position of the UE. The UE may monitor, based on receiving the paging indication, the subset of beams over a physical downlink shared channel for the paging message.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless node may identify one or more parameters indicating a mobility of a served node relative to a serving node. The wireless node may classify the served node within a category, among a plurality of categories, based at least in part on the one or more parameters. In some aspects, the plurality of categories may include at least a first category for served nodes that have a low mobility relative to the serving node and a second category for served nodes that have a high mobility relative to the serving node. Numerous other aspects are provided.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify that an uplink transmission to a base station is to occur in accordance with an uplink timing advance value representing an amount of time that the uplink transmission takes from transmission at the UE to reception at the base station. The UE may perform an autonomous open-loop adjustment to the uplink timing advance value. The UE may transmit the uplink transmission to the base station in accordance with the adjusted uplink timing advance value. The base station may transmit an indication of a set of uplink timing advance values for a UE to use for uplink transmissions, each of the set of uplink timing advance values representing an amount of time that an uplink transmission is expected to take from transmission at the UE to reception at the base station.

Abstract: An apparatus acquires random access information for at least one of a donor node serving the node or a neighbor cell of the node and determines one or more random access parameters for a device to perform a random procedure with the node. The one or more random access parameters are based on the acquired random access information. The apparatus may be an IAB node.

Abstract: A relay supporting multiple relay modes is provided. The relay transmits capability information to a base station, the capability information indicating support for a first relay mode and a second relay mode. The relay determines a mode of operation, either on its own or based on an indication of a mode of operation from the base station, wherein the mode of operation comprises the first relay mode or the second relay mode. The relay communicates with at least one of the base station or another wireless device based at least in part on the determined mode of operation.

Abstract: This disclosure provides systems, devices, apparatus, and methods, including computer programs encoded on storage media, for channel sensing with self-interference awareness for unlicensed band. A node may transmit, via a first entity of the node, at least one signal during a LBT procedure of a second entity of the node. The at least one signal may include a signal energy. The LBT procedure may be associated with a total measured interference from all detected energy sources. The node may determine a self-interference at the second entity of the node based on the signal energy of the at least one signal transmitted via the first entity of the node and calculate an interference from at least one other source based on a difference between the total measured interference from all detected energy sources and the self-interference determined based on the signal energy of the at least one signal.

Abstract: An integrated access and backhaul (IAB) node may transition between use of a mobile termination (MT) function at the wireless device and use of a distributed unit (DU) function. The IAB node may schedule communication using the DU function of the wireless device based on whether one or more guard symbols are provided for an allocation from a parent node for the MT function.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for performing a common channel sensing procedure for transmissions via a mobile termination (MT) role or via a distributed unit (DU) role of an integrated access and backhaul (IAB) node, or both. In one aspect, the IAB node may obtain channel access for transmissions via the MT role or the DU role, or both, using the same channel sensing procedure. The IAB node may select a timing of a sensing slot for the common channel sensing procedure in accordance with a capability of the IAB node and a timing of the transmissions. The IAB node may initiate a channel occupancy time (COT) for the transmissions via the MT role or the DU role, or both, as a result of determining that a measured energy detection (ED) value satisfies an ED threshold.

Abstract: Certain aspects of the present disclosure provide techniques for beam refinement. A base station provides information regarding what transmit beams are used to transmit different reference signal (RS) resources. In some cases, the information indicates whether a same transmit beam is used to transmit a set of RS resources (e.g., symbol, sub-symbol, or frequency resources) or whether different transmit beams are used to transmit the set of RS resources.

Abstract: Certain aspects of the present disclosure provide techniques for channel access in an unlicensed spectrum. An example method of wireless communication by a user equipment includes receiving a resource grant indicating a plurality of resource candidates for an uplink signal. The method also includes sensing for energy, in response to the resource grant, over one or more of the resource candidates in a first sensing occasion before a transmission occasion of the uplink signal. The method further includes transmitting, during the transmission occasion, the uplink signal using a subset of the resource candidates selected based at least in part on energy sensed in the first sensing occasion.

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for performing separate channel sensing procedures for transmissions via a mobile termination (MT) role and for transmissions via a distributed unit (DU) role of an integrated access and backhaul (IAB) node. In one aspect, the IAB node may obtain channel access for transmissions via the MT role by performing a first channel sensing procedure and may obtain channel access for transmissions via the DU role by performing a second channel sensing procedure. The IAB node may determine a first timing of a first sensing slot for performing the first channel sensing procedure and a second timing of a second sensing slot for performing the second channel sensing procedure in accordance with a capability of the IAB node and a transmission timing of the transmissions via the MT role and the DU role.

Abstract: Methods, systems, and devices for wireless communications are described. For example, a first communication device may receive, from a second communication device, control signaling triggering a channel access procedure at the first communication device. In some case, the channel access procedure may be for accessing the shared radio frequency spectrum. The first communication device may then perform the channel access procedure based on the control signaling. In some examples, the first communication device may, based on the channel access procedure, transmit an indication of a channel occupancy initiated by the first communication device to the second communication device. The first communication device may relay communications between the second communication device and a third communication device during a channel occupancy time (COT) based on the transmitted indication of the channel occupancy initiated by the first communication device.

Abstract: A method, a computer-readable medium, and an apparatus are provided for wireless communication at an integrated access and backhaul (TAB) node. The TAB node receives a first delay parameter and a second delay parameter associated with a packet, the first delay parameter being associated with a discard determination for the packet and the second delay parameter being associated with scheduling the packet for transmission. The TAB node performs a discard decision for the packet based on the first delay parameter associated or schedules the packet for transmission to a second TAB node or a user equipment (UE) using a second delay parameter associated with the packet. A central unit (CU) of an TAB network may indicate, to an TAB node, the second delay parameter for scheduling a packet and the first delay parameter for determining whether to discard the packet.

Abstract: Methods, systems, and devices for wireless communications are described. A wireless node may determine a configuration for interference measurement at the first wireless node, which may indicate a set of uplink resources for uplink reference signals and a beam sweeping configuration. Additionally, or alternatively, the configuration may indicate one or more resource sets configured for interference measurement. In some cases, the first wireless node may determine a set of transmission beams for the uplink reference signals based on the beam sweeping configuration, and the first wireless node may transmit the uplink reference signals via all of the transmission beams supported by the first wireless node.