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