An indication is also sent to {HEAD ~ the system station} that the node for relaying has {TAIL ~ different buffering capabilities} than the user station 
An indication is also sent to { HEAD ~ the system station } that the node for relaying has { TAIL ~ different buffering capabilities } than the user station
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH