A comprehensive survey on scheduler for VoIP over WLAN

作者：Nisar Kashif^*; Amphawan Angela; Hassan Suhaidi; Sarkar Nurul I

来源：Journal of Network and Computer Applications, 2013, 36(2): 933-948.

DOI：10.1016/j.jnca.2012.07.019

• Scheduler
• Algorithm
• Packets
• VoIP
• WLAN

Voice over Internet Protocol (VoIP) technology has observed rapid growth in the world of telecommunications. VoIP offers high-rate voice services at low cost with good flexibility, typically in a Wireless Local Area Network (WLAN). In a voice conversation, each client works either as a sender or a receiver depending on the direction of traffic flow over the network. A VoIP technologically requires high throughput, less packet loss and a high fairness index over the network. The packets of VoIP streaming may experience drops because of competition among the different kinds of traffic flow over the network. A VoIP application is also sensitive to delays and requires voice packets to arrive on time from the sender to the receiver without any delay over a WLAN. To date, scheduling of VoIP traffic is still an unresolved problem. The objectives of this survey paper are to discuss fundamental principles of VoIP-related schedulers and identify current scheduler issues. This survey paper also identifies the importance of the scheduling techniques over WLANs. Related research work for real-time applications specifically for VoIP will also be highlighted.

• 出版日期2013-3