said allocation unit allocates respective bandwidth to said plurality of {HEAD ~ logical channels} based on {TAIL ~ the priority} given to each receiving device 
based on
said allocation unit allocates respective bandwidth to said plurality of { HEAD ~ logical channels } based on { TAIL ~ the priority } given to each receiving device
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH