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