In addition thereto it performs a duplication and sends the duplicated data packet to the target BSS for {HEAD ~ forwarding} to {TAIL ~ the mobile station} 
to
In addition thereto it performs a duplication and sends the duplicated data packet to the target BSS for { HEAD ~ forwarding } to { TAIL ~ the mobile station }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL