{HEAD ~ A cross layer optimization} is presented between the MAC and Network layers to enhance the performance of {TAIL ~ VoIP services} in advanced wireless networks 
{ HEAD ~ A cross layer optimization } is presented between the MAC and Network layers to enhance the performance of { TAIL ~ VoIP services } in advanced wireless networks
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH