The base station 6, wherein {TAIL ~ the service metric} comprises the quality of {HEAD ~ service priority indicator} 
The base station 6 , wherein { TAIL ~ the service metric } comprises the quality of { HEAD ~ service priority indicator }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD