yes, the ul rxlev from a “neighbour” MS will be reported into a high intf band.
in case of hopping TRX, the average rxlev measured over one hour is done over all hopping freq.
I don’t understand your issue with the hopping…
each TDMA frame, the measurement is done on the freq of the MA list. There is no MS in the cell, ok, but the MA list is still hopping normally 🙂