A communication system including a first and second user equipment in {HEAD ~ communication} over a shared floor and {TAIL ~ a server} means for managing the shared floor 
A communication system including a first and second user equipment in { HEAD ~ communication } over a shared floor and { TAIL ~ a server } means for managing the shared floor
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH