The disclosure ensures normal communication between {TAIL ~ a piece} of User Equipment and {HEAD ~ a NodeB} 
The disclosure ensures normal communication between { TAIL ~ a piece } of User Equipment and { HEAD ~ a NodeB }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD