Abstract: Methods, systems, and devices for wireless communications are described. For example, the described techniques provide for performing and reporting suitable measurements, at a first user equipment (UE), on reference signals from relay UEs to determine which relay UEs to activate or deactivate for relaying communications for the first UE. The first UE may be configured to perform measurements on deactivated relay UEs, and the first UE may report these measurements (or other measurements) when one or more events are triggered. The events may depend on the measurements performed on the deactivated relay UEs. Once the events are triggered, the first UE may report the measurements, and a second UE or a network entity may use the measurements to efficiently determine which relay UEs to activate or deactivate for relaying communications for the first UE.

Abstract: Aspects are provided that allow a user equipment (UE) to facilitate interference measurements configuration for assessing impact of network entity backoff adaptation relaxation. The UE may obtain interference measurements of one or more first reference signals including a measurement prior to and after a backoff adaptation associated with a first network entity, and signal strength measurements of a second reference signal received from the first network entity. The UE also may send, to a second network entity of a serving cell, an interference report indicating whether downlink interference originates from the first network entity based at least in part on the interference measurements and the signal strength measurements. After obtaining the report, the second network entity may send, to the first network entity, a feedback signal indicating whether the first network entity is to modify the backoff adaptation based on the downlink interference to the UE.

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: A first wireless device outputs, to a second wireless device, a first indication of a set of TR locations associated with a communication channel, where the set of TR locations are selected based on an estimate of an associated communication channel. The first indication of the set of TR locations includes at least one of a subcarrier bitmap, a granularity for the subcarrier bitmap, a subcarrier RIV, or a CSI-RS for TR. The network entity outputs a communication for the second wireless device, the communication including a first set of data tones and a second set of reserved tones, in a same symbol, based on the first indication of the set of TR locations.

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 herein. To support network energy savings, a user equipment (UE) may receive, from a network entity, control signaling that indicates a configuration for measuring uplink packet delay for transmission of a packet. The UE may generate a measurement of the uplink packet delay for transmission of the packet. The measurement may correspond to a duration between a packet arrival time at a packet data convergence protocol layer of the UE and a transmission or a retransmission of the packet. The UE may transmit control signaling that indicates the generated measurement. The network entity may obtain the measurement and evaluate whether to switch a cell to an off state based on the obtained measurement.

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: Certain aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The UE receives downlink control information (DCI) scheduling multiple transmissions belonging to a plurality of sub-groups. Each sub-group includes one or more transmissions. The DCI indicates at least one feedback timing. The UE receives the multiple transmissions belonging to the plurality of sub-groups. The UE transmits feedback for each sub-group of the one or more transmissions, in accordance with the at least one feedback timing.

Abstract: Methods, systems, and devices for wireless communications are described that provide for an originating network entity to request sub-band interference cancellation (SBIC) information from one or more neighboring network entities for downlink communications via one or more sub-bands. The neighboring network entities may serve at least one user equipment (UE) using adjacent sub-bands to the one or more sub-bands of the originating network entity. The originating network entity may exchange information related to sub-bands of interest to the one or more neighboring network entities, and whether SBIC is to be activated or is not to be activated for only the identified sub-bands versus across all operating sub-bands. The one or more neighboring network entities may configure measurement reporting by the UE for multiple time periods, corresponding to when transmissions are present and absent from the allocated sub-band(s) of the originating network entity.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a transmit inactivity period of a network entity. The UE may adjust a power used for receiving communications based at least in part on the indication. Numerous other aspects are described.

Abstract: Methods, systems, and devices for wireless communication are described. In some systems, a network entity may adjust a backoff power level for communications by the network entity in a first cell supported by the network entity. The network entity may transmit signaling that indicates an estimated level of interference in a second cell supported by a neighboring network entity based on the adjusted backoff power level. The network entity may receive a feedback message from the neighboring network entity that indicates downlink interference measurements by one or more UEs operating within the second cell. In some examples, the feedback message may indicate a difference in interference measurements obtained by the UEs before and after the backoff power level is adjusted by the network entity. The network entity may further adjust or maintain the backoff power level based on the feedback received from the neighboring network entity.

Abstract: Apparatus, methods, and computer-readable media for multiplexing of overlapped uplink channel transmission repetitions are disclosed herein. A user equipment (UE) may determine that at least a portion of a first set of uplink channel transmission repetitions overlaps with at least a portion of a second set of uplink channel transmission repetitions. The UE may modify the first set of uplink channel transmission repetitions based on the second set of uplink channel transmission repetitions. A base station (BS) may transmit a first downlink transmission associated with the first set of uplink channel transmission repetitions that overlaps with at least a portion of a second set of uplink channel transmission repetitions associated with a second downlink transmission. The BS may receive a modified version of the first set of uplink channel transmission repetitions based on the second set of uplink channel transmission repetitions. Thus, the reliability of uplink repetitions can be increased.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from a base station (BS), a channel state information reference signal (CSI-RS) communication; and transmit, to the BS, a physical uplink control channel communication including feedback information that is a response to the CSI-RS communication and including an interference measurement. Numerous other aspects are provided.

Abstract: Aspects relate to feedback such as HARQ-ACK/NACK feedback in wireless communication systems. A predetermined condition, such as a timeout condition, is configured for a user equipment (UE) to determine whether a HARQ-less feedback should be implemented in the UE. In a particular aspect, the predetermined condition may be a timeout period or some other condition where a UE will cancel or discard feedback if the UE is unable to respond within the timeout period or meet the condition imposed. Various conditions may be imposed and are communicated through either radio resource control (RRC) signaling or downlink control information (DCI) parameters, or a combination thereof.

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a number of hybrid automatic repeat request (HARQ) bits to report to a base station for deferred HARQ or cancelled HARQ for one or more HARQ processes. The UE may transmit HARQ bits for the deferred HARQ or cancelled HARQ, up to the number of HARQ bits, after receiving downlink control information requesting the HARQ bits. Numerous other aspects are described.

Abstract: Method and apparatus to defer transmission of HARQ-ACK feedback that overlaps a DL symbol. The apparatus determines to transmit PUCCH SPS HARQ-ACK feedback in response to a received semi-persistently scheduled PDSCH. The apparatus determines that the transmission of the SPS PUCCH HARQ-ACK feedback would overlap with a DL symbol. The transmission of the SPS PUCCH HARQ-ACK feedback is deferred to another UL symbol if the transmission of the SPS PUCCH HARQ-ACK feedback overlaps with the DL symbol. The apparatus transmits, based on the determination that the SPS PUCCH HARQ-ACK feedback would overlap with a DL symbol, a deferred SPS PUCCH HARQ-ACK feedback in one of a next set of available UL symbols or concurrently with a PUCCH HARQ-ACK feedback transmission in a next dynamically scheduled PUCCH after the DL symbol based on a deferred feedback configuration configured to define PUCCH content.

Abstract: Systems and methods are disclosed for triggering a long range extension mode of operation for a wireless device in a cellular communications network. In one preferred embodiment, the wireless device is a Machine Type Communication (MTC) device. In one embodiment, a node in the cellular communications network determines that the wireless device is to operate in the long range extension mode if there is difficulty in establishing communication between the wireless device and the cellular communications network. If the wireless device is to operate in the long range extension mode, the node activates one or more long range extension mechanisms with respect to the wireless device such that the wireless device operates in the long range extension mode. In this manner, the long range extension mode is selectively triggered for the wireless device.

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for hybrid automatic repeat request (HARQ) feedback retransmission. An example method of wireless communication by a user equipment generally includes receiving signaling indicating to reschedule HARQ feedback for transmission; determining the HARQ feedback based at least in part on one or more fields of the signaling; and transmitting the HARQ feedback based on the determination.

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may communicate with a base station as part of a wireless communications system. The UE may receive a downlink message from a base station. The UE may perform a decoding procedure for the received downlink message. The UE may determine the downlink message has a traffic type associated with a quality of service level. The UE may determine to transmit enhanced feedback with an acknowledgment message (positive or negative) indicating the result of the decoding procedure for the received downlink message, in cases where the downlink message is of the first traffic type. The enhanced feedback may indicate assistance information associated with a quality of service level for the received downlink message. The UE may then transmit the enhanced feedback for the acknowledgment message.

Abstract: In one aspect, a method of wireless communication includes monitoring, by a user equipment (UE), a first component carrier (CC) of a plurality of CCs for a first channel, determining, by the UE during monitoring, one or more channel measurements for a set of candidate CCs of the plurality of CCs, determining, by the UE based on a determination at the UE, whether to include carrier selection data in an uplink transmission, the carrier selection data based on one or more channel measurements, and transmitting, by the UE, the carrier selection data in the uplink transmission. Other aspects and features are also claimed and described.