Rate-Adaptive Admission Control for Bandwidth Assurance in Multirate Wireless Mesh Networks
Admission Control (AC) is an effective mechanism for providing bandwidth assurance in wireless mesh networks. Early AC schemes over multi-rate WMNs typically use a prechosen rate or a MAC-layer adapted rate for each link, denying data sessions that could have been admitted should a better multi-rate AC be available. Taking full advantage of multi-rate WMNs, the authors present a Rate-adaptive Admission Control protocol (RaAC) for IEEE 802.11-based WMNs. RaAC consists of three major components: a rate adaption algorithm to meet the bandwidth requirement of the data session and satisfy the channel condition of the PHY layer.