Multi-hop bandwidth reservation in WMN-based IEEE 802.11s (MBRWMN)

Abstract

The IEEE 802.11s Wireless Mesh Networks (WMN) is a new multi-hop technology increasing the coverage of IEEE 802.11 Wireless Network and providing Internet access. The IEEE 802.11s WMN is composed of two levels: Mesh and clients levels. The client may be mobile or static, but all Mesh nodes are static. The principal challenge of the WMN-based IEEE 802.11s, is how to guarantee the Quality of Service (QoS) to multimedia and real time traffic. In this article, we propose a method based on bandwidth reservation to improve the QoS of real time traffic. This method named MBRWMN(Multi-hop Bandwidth Reservation in WMN) defines a new weight parameter based on bandwidth reservation and use it to define a new WAM(Weighted Airtime Metric) metric. The best path between the source and the destination, is provided by this new metric. The proposed solution guarantees hop by hop required bandwidth to real time traffic. The simulation results show the proposed solution performance compared with HWMP protocol.