RIL neighboring cell question

Not sure where to ask this, mostly curiosity. Everytime I open OS Monitor my message log is filled with a one variation or another of this entry. Whats my radio doing?

2016-06-25 12:49:30,DEBUG,RILC,Phone,GET_NEIGHBORING_CELL_IDS dispatched to RIL_URC_PROXY

from xda-developers http://ift.tt/28V3Ngr
via IFTTT