{HEAD ~ This strategy}, combined with {TAIL ~ a time} out, allows for a better computing experience by reducing the latency due to the time taken in authenticating a new mobile unit 
combined with
{ HEAD ~ This strategy } , combined with { TAIL ~ a time } out , allows for a better computing experience by reducing the latency due to the time taken in authenticating a new mobile unit
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH