A method of wireless communication by a user equipment, UE, comprising: receiving, from a base station, a plurality of signals through a plurality of beams transmitted by the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station, wherein the plurality of signals include at least one of a plurality of beam reference signals, a plurality of beam refinement reference signals, and a plurality of channel state information reference signals, CSI-RSs; performing channel estimation for each beam of the plurality of beams based on the plurality of signals; receiving a plurality of extended synchronization signals, ESS, each ESS indicating a corresponding symbol of a plurality of symbols, each symbol associated with a set of beams from the plurality of antenna ports; associating each set of beams of the plurality of beams to a respective symbol of the plurality of symbols based on a corresponding ESS of the plurality of ESSs, selecting one or more beams from the plurality of beams based on the channel estimation, which comprises: selecting at least one beam with a measurement of the channel estimation for each of the plurality of symbols being greater than a threshold measurement for the channel estimation, wherein the one or more beams are selected among the beams with respective measurements of channel estimation for the plurality of symbols being greater than the threshold measurement; and transmitting, to the base station, a feedback signal including information about the one or more beams selected from the plurality of beams within one or more frequency bands. receiving, from a base station, a plurality of signals through a plurality of beams transmitted by the base station, each of the plurality of beams corresponding to a respective antenna port of a plurality of antenna ports of the base station, wherein the plurality of signals include at least one of a plurality of beam reference signals, a plurality of beam refinement reference signals, and a plurality of channel state information reference signals, CSI-RSs; performing channel estimation for each beam of the plurality of beams based on the plurality of signals; receiving a plurality of extended synchronization signals, ESS, each ESS indicating a corresponding symbol of a plurality of symbols, each symbol associated with a set of beams from the plurality of antenna ports; associating each set of beams of the plurality of beams to a respective symbol of the plurality of symbols based on a corresponding ESS of the plurality of ESSs, selecting one or more beams from the plurality of beams based on the channel estimation, which comprises: selecting at least one beam with a measurement of the channel estimation for each of the plurality of symbols being greater than a threshold measurement for the channel estimation, wherein the one or more beams are selected among the beams with respective measurements of channel estimation for the plurality of symbols being greater than the threshold measurement; and selecting at least one beam with a measurement of the channel estimation for each of the plurality of symbols being greater than a threshold measurement for the channel estimation, wherein the one or more beams are selected among the beams with respective measurements of channel estimation for the plurality of symbols being greater than the threshold measurement; and transmitting, to the base station, a feedback signal including information about the one or more beams selected from the plurality of beams within one or more frequency bands.