Abstract: Certain aspects of the present disclosure provide techniques for selecting an uplink (UL) transmit beam by a user equipment (UE). A UE may receive, from a base station (BS), one or more beamformed downlink signals using one or more receive beams. The UE may select an uplink transmit beam based, at least in part, on the one or more beamformed downlink signals. The UE may transmit an uplink signal using the selected uplink transmit beam.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive one or more downlink control information (DCI) transmissions including a plurality of transmit power control (TPC) commands. The plurality of TPC commands may relate to an uplink channel transmit power for a plurality of uplink beam-pairs. The wireless communication device may determine the uplink channel transmit power for the plurality of uplink beam-pairs based at least in part on the plurality of TPC commands. Numerous other aspects are provided.

Abstract: A user equipment apparatus determines whether a transmission is received from a base station within a time window and skips measurement of a reference signal during a subsequent period, when a transmission is received from the base station within the time window. A base station apparatus configures a UE to monitor one or more reference signals associated with a beam pair link and transmits a first signal in a transmission to the UE. The base station determines whether the transmission is received at the UE within a time window and determines whether to transmit a reference signal, based on whether the transmission is received at the UE within the time window. Upon determining that the transmission was received at the UE, the base station may skip transmission of the reference signal or modify a time, a frequency, a power, and/or a reference signal offset for the reference signal.

Abstract: Various aspects described herein relate to techniques for signaling and using one or more virtual cell identifications (V-cell IDs) for single frequency network (SFN)-type of transmissions in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method may include performing, by a user equipment (UE), a cell search to obtain a cell ID, and decoding, by the UE, a message based on the cell ID, wherein the message includes a master information block (MIB). The method may further include identifying, by the UE, a virtual cell ID used for SFN-type transmissions based on information decoded from the message. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.

Abstract: Aspects herein describe transmitting reference signals in wireless communications. An indication of resources over which to transmit an uplink reference signal can be received from an access point, where the resources are at least partially used by another device to transmit a downlink reference signal or a second uplink reference signal. The uplink reference signal can be transmitted over the resources.

Abstract: Methods, systems, and devices for wireless communication are described. Wireless communications systems may support beamformed transmissions between devices (e.g., to improve coverage range). The beamformed transmissions may depend on discovery and maintenance of receive and transmit beams over which a given device may communicate with another device. Various receive and transmit beams for a given device may be compared using reference signals. As the number of devices attempting to access a cell increases, the number of reference signals to be transmitted may scale proportionally. Large numbers of reference signals may flood time-frequency resources of the system and/or require excessive processing at a mobile device. Scrambling sequences for reference signals may be employed to improve efficiency of resource usage. In aspects, the scrambling sequences may be implicitly determined (e.g., based on resources over which the access request was transmitted).

Abstract: Aspects of the present disclosure provide a method, a computer-readable medium, and an apparatus for wireless communication, for example for reference signal measurements. An example method, performed by a user equipment, generally includes determining a duration for reference signal measurements of a network entity and beamforming one or more radio frequency chains in one or more directions for the reference signal measurements of the network entity during the duration.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a UE may measure a first reference signal, associated with a frequency band of a long term evolution (LTE) system, and a second reference signal associated with a frequency band of a new radio (NR) system. The frequency band of the NR system may overlap the frequency band of the LTE system. The UE may determine first channel state feedback, associated with the frequency band of the LTE system, and second channel state feedback, associated with the frequency band of the NR system, based at least in part on the first reference signal and the second reference signal, respectively. The UE may report the first channel state feedback or the second channel state feedback in uplink control information (UCI). Other aspects are provided.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for dynamic reclamation of resources reserved for forward compatibility using communications systems operating according to new radio (NR) technologies. Certain aspects provide a method for wireless communication. The method generally includes identifying resources previously reserved for forward compatibility (FC) that are available for reuse, and providing signaling, to one or more user equipments (UEs), indicating the identified resources are available for reuse.

Abstract: Methods, systems, and devices for wireless communication are described. The described techniques provide for configuration and transmission of reference signals over aggregated mini-slots by modifying (e.g., extending) transmission time intervals (TTIs) or sharing reference signals across multiple mini-slots. The reference signals may be shared between multiple aggregated mini-slots and a reference signal pattern may be determined based on data payload allocation, modulation coding scheme (MCS), rank, or other factors of the aggregated mini-slots. Data payloads may be scheduled jointly or separately for each mini-slot and may be allocated across a set of aggregated mini-slots.

Abstract: Certain aspects of the present disclosure provide techniques for selecting an uplink (UL) transmit beam by a user equipment (UE). A UE may receive, from a base station (BS), one or more beamformed downlink signals using one or more receive beams. The UE may select an uplink transmit beam based, at least in part, on the one or more beamformed downlink signals. The UE may transmit an uplink signal using the selected uplink transmit beam.

Abstract: Certain aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may receive one or more downlink control information (DCI) transmissions including a plurality of transmit power control (TPC) commands. The plurality of TPC commands may relate to an uplink channel transmit power for a plurality of uplink beam-pairs. The wireless communication device may determine the uplink channel transmit power for the plurality of uplink beam-pairs based at least in part on the plurality of TPC commands. Numerous other aspects are provided.

Abstract: A user equipment (UE) may be configured to communicate a number of transmissions that may each have separate feedback processes. A feedback configuration for providing feedback for such separate feedback processes may be determined based on semi-static signaling and dynamic signaling. In some cases, semi-static signaling, such as radio resource control (RRC) signaling and dynamic signaling, such as downlink control information (DCI), may together provide a feedback configuration for a particular transmission. The semi-static signaling may provide a number of bits of feedback information, an interpretation of the bits of feedback information, or combinations thereof, and dynamic signaling may indicate that one or more of the bits are to have one of a number of available interpretations, may indicate that one or more additional bits are to be included with feedback, of combinations thereof. Feedback techniques as discussed herein may be used to provide feedback for uplink or downlink transmissions.

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for uplink power control using communications systems operating according to new radio (NR) technologies. For example, a method for wireless communication by a base station includes providing power control parameters, to at least one user equipment (UE), for use in performing uplink transmit power control for one or more uplink transmissions sent using one or more uplink transmit beams, signaling the UE to set or reset one or more of the power control parameters, and transmitting one or more reference signals (RSs) using one or more downlink transmit beams, for the UE to measure for use in the uplink transmit power control.

Abstract: This disclosure generally relates to systems, devices, apparatuses, products, and methods for wireless communication. A communication system may include a user equipment (UE) that receives a configuration for contention-free random access (CFRA) and a configuration for contention-based random access (CBRA). The UE determines a first random access resource. The first random access resource maps to one or more beams from a target base station. The UE determines a beam quality associated with the first random access resource. The UE initiates a random access request using the CFRA when the first random access resource is a contention-free resource, and the beam quality of the first random access resource is above a threshold beam quality. The UE initiates the random access request using the CBRA when the first random access resource is the contention-free resource, and the beam quality of the first random access resource is below the threshold beam quality.

Abstract: Aspects herein describe transmitting reference signals in wireless communications. An indication of resources over which to transmit an uplink reference signal can be received from an access point, where the resources are at least partially used by another device to transmit a downlink reference signal or a second uplink reference signal. The uplink reference signal can be transmitted over the resources.

Abstract: Aspects of the present disclosure provide various apparatuses and methods for utilizing null resource elements to facilitate dynamic and bursty inter-cell interference measurements in a wireless network like 5G new radio (NR). A user equipment (UE) is provided with resources and signaling to facilitate bursty interference measurements at demodulation time.

Abstract: A method of wireless communication includes receiving, at a user equipment (UE), a grant from a base station on a control channel, the grant including content indicating a mini-slot assigned to the UE. The method may include interpreting the grant based on a current configuration of a data channel to determine the mini-slot. The method may include communicating with the base station during the mini-slot indicated by the grant.

Abstract: Methods, systems, and devices for wireless communications are described. In some wireless communications systems, a base station may communicate with a user equipment (UE) using multiple antennas. Data streams may be mapped to the antennas using antenna ports. In some cases, a base station may transmit a transmission configuration indication (TCI) to a UE to indicate quasi co-location (QCL) relationships between antenna ports used for downlink communication with a UE. The UE may use these QCL relationships to identify appropriate techniques for decoding a downlink transmission from the base station. In some cases, it may be appropriate for a base station to update one or more TCI states configured for indicating, to a UE, QCL relationships between antenna ports used for downlink communication with the UE. As described herein, a base station may support techniques for dynamically updating such TCI states (e.g., via downlink control information (DCI) signaling).

Abstract: Methods, systems, and devices for wireless communications provide for transmission of a beam switch command to a user equipment (UE) via control channel signaling. The UE may establish a connection with a base station using a first transmission beam, receive configuration information configuring the UE to select between a first decoding hypothesis corresponding to downlink control information (DCI) including a bit field including a beam switch command and a second decoding hypothesis corresponding to the DCI not including the bit field, receive a downlink control channel transmission via the first transmission beam, decode the downlink control channel transmission in accordance with the configuration information to obtain decoded DCI, and communicate with the base station based at least in part on the decoded DCI.