The master using a second type of data on a second occupied bandwidth acknowledges the slaves spectrum request in time slot 8 and subsequently scans the band for {HEAD ~ available spectrum} during {TAIL ~ time slot} 9 
during
The master using a second type of data on a second occupied bandwidth acknowledges the slaves spectrum request in time slot 8 and subsequently scans the band for { HEAD ~ available spectrum } during { TAIL ~ time slot } 9
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH