Thus high priority services can pre empt the usage of {TAIL ~ wireless resources} by {HEAD ~ low priority services} 
Thus high priority services can pre empt the usage of { TAIL ~ wireless resources } by { HEAD ~ low priority services }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD