Abstract: Provided herein are method and apparatus for beam recovery. It provides an apparatus for a UE (101) including a radio frequency (RF) interface; and processing circuitry configured to: determine beam quality for one or more BPLs between the UE (101) and an access node (111,112); and in response to the beam quality for all of the BPLs being below a first predetermined threshold, encode Physical Random Access Channel (PRACH) data to include a beam recovery request that identifies a candidate beam of the access node (111,112); determine a transmit power for the beam recovery request; and send the PRACH data to the RF interface for transmission to the access node (111,112) with the transmit power. At least some embodiments allow for determining a transmission power to transmit a PRACH, to ensure reception of the PRACH, and allow for determining whether to use a PRACH or a PUCHH.

Abstract: Provided herein are method and apparatus for precoder determination and precoder matrix indicator (PMI) indication for uplink transmission. The disclosure provides an apparatus for a user equipment (UE), comprising circuitry configured to: determine a precoder for each of a plurality of precoder resource block groups (PRGs) for an uplink transmission, wherein the plurality of PRGs are configurable in at least one of PRG size and number; and precode each of the plurality of PRGs with a determined precoder; and a memory to store the determined precoder for each of the plurality of PRGs.