Design and Analysis of the Performance of Voice Switching Control System Prototypes for Air Traffic Control

摘要

Air Traffic Controller (ATC) which functions as a regulator of flight traffic uses voice communication as the main tool in carrying out its duties. The components of ATC that provide voice communication facilities are Voice Switching Control System (VSCS) that uses Circuit Switching (CS) and Time Division Multiplexing (TDM) technology, but this technology is complex and expensive. With advancing technological developments, VoIP communication using packet switching (PS) technology can be a cheaper alternative for voice communication at ATC. Through TCP/IP networks, the integration of VoIP with the communication, navigation and surveillance (CNS) components is also easier to implement. Apart from these advantages, sending voice packets over a packet switching-based network also presents new challenges in the form of communication reliability. The measurement of signal power level from radio transmissions, delay, jitter, packet loss and throughput, is carried out to test the reliability of the prototype related to technical requirements that refer to international standard documents (ICAO and Eurocae).