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Wi-Fi (802.11) White Papers

SoftMAC: Layer 2.5 MAC for VoIP Support in Multi-Hop Wireless Networks

Overview This paper presents the challenges in supporting VoIP services over multi-hop wireless networks using commercial IEEE 802.11 MAC DCF hardware, and proposes a novel software solution, called Layer 2.5 SoftMAC. The proposed SoftMAC resides between the 802.11 MAC layer and IP layer to coordinate the real-time and best-effort packet transmission among neighboring nodes in a multi-hop wireless network. To effectively support VoIP services, the SoftMAC architecture employs three key mechanisms: distributed admission control for regulating the load of real time-traffic, rate control for minimizing the impact of best-effort traffic on real-time traffic, and non-preemptive priority queueing for providing high priority service to VoIP traffic.

Further White Paper Details
Publisher	Institute of Electrical and Electronics Engineers	File Format	PDF
Date Published	December 2005	Downloads	53
Format	White Papers
Topics	Wi-Fi (802.11), VoIP - IP Telephony, Wireless LAN

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