a second entity mechanism configured to determine {TAIL ~ said first parameter} and {HEAD ~ said second parameter}, said first parameter being proportional to said rate matching ratio 
a second entity mechanism configured to determine { TAIL ~ said first parameter } and { HEAD ~ said second parameter } , said first parameter being proportional to said rate matching ratio
OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH