{HEAD ~ Program} for selecting {TAIL ~ an optimum access point} in a wireless network on a common channel 
for selecting
{ HEAD ~ Program } for selecting { TAIL ~ an optimum access point } in a wireless network on a common channel
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH