This paper proposes and analyses the idea of replacing professional mobile radio for airport ground handlers by VoIP (Voice over Internet Protocol) systems based on WLAN. The proposed communication scheme is adjusted to business processes at airports. It provides push-to-talk unicast and group messages (determined by business tasks or location) with priorities, encrypted transmission, and mailboxes. The resulting architecture and proof-of-concept prototype consists of a server and software clients reusing already installed hardware and WLAN infrastructure, and uses peer-to-peer RDP voice streams. Bandwidth considerations estimate a maximum of 72 concurrent streams per access point on WLAN for IEEE 802.11g (54 Mbit/s) and 13 streams for IEEE 802.11b (11 Mbit/s), enhanced with a factor 3 to 5 if IEEE 802.11e is used as quality of service support.
VoIP over WLAN: replacing professional mobile radio on airports
VoIP über WLAN: Ersatz für den professionellen beweglichen Funkdienst an Flughäfen
2009
10 Seiten, 3 Bilder, 1 Tabelle, 9 Quellen
Conference paper
English
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