Distributed Resource Reservation Mechanism for IEEE 802.11e-Based Networks

Resource reservation is one of the effective solutions in guaranteeing the Quality-of-Service (QoS) in communication networks. In this paper, the authors propose a novel resource reservation scheme for dynamically managing the bandwidth resources in IEEE 802.11e-based Wireless Local Area Networks (WLANs). The proposed solution consists of two components namely dynamic Medium Access Control (MAC) scheduler and adaptive admission control algorithm. Once resources occupied by certain stations become idle due to the end of QoS data session, the proposed MAC scheduler will either release the resources to the Non-Real-Time Traffic Flows (NRTTFs) or Re-allocate them to other real-Time Traffic Flows (RTTFs) which require dedicated resources.