| Publisher | Politecnico di Bari | ||
|---|---|---|---|
| Format | 585.4KB PDF | Date added | 28 Apr 2006 |
| Topics | Wireless LAN, Mobile - Wireless Communications, Wi-Fi (802.11) | ||
| Downloads | 61 | ||
The 802.11e working group has recently proposed innovative functionalities in order to support delay-sensitive multimedia applications, such as real-time voice and video, in Wireless Local Area Networks (WLANs). In particular, the 802.11e proposal introduces; the Hybrid Coordination Function (HCF), which is an improved channel access method aimed at allocating the first-hop WLAN bandwidth to delay-insensitive and delay-sensitive flows; a Call Admission Control (CAC) algorithm for preventing network overloads, which would drastically degrade the service offered by the network; and a Signalling scheme for service request and QoS service level negotiation. This paper proposes a dynamic bandwidth allocation algorithm along with a measurement based CAC algorithm for providing delay guarantees to real-time media flows in IEEE 802.11e networks.
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