Joint Routing and Bandwidth Allocation Protocol for Ieee 802.16 Wimax Mesh Networks

In the recent years, the web and VoIP services has motivated the development of new broadband access technologies due to the increased demands for faster connection [12]. For the upcoming generation, IEEE 802.16 standard, WiMAX (Worldwide Interoperability for Microwave Access Forum) has become the most potential wireless access technology. WiMAX uses a common MAC protocol to incorporate the set of air interfaces but physical layer specifications are included depending upon the frequency range [29]. A base station (BS) and multiple Subscriber Stations (SSs) are included in the IEEE 802.16 network. In a certain geographical area, from each SS the traffic is aggregated and from the end users and is sent to BS which serves as the gateway for external network [12]. WiMAX has a transmission rate of 75Mbps and it can reach upto a distance of 50 km. the transmission speed is higher and the transmission coverage is larger for the WiMAX when compared to other wireless networks. High transmission rate can be achieved due to greater coverage and enhanced mobility support. The QoS scheduling in the network supports the heterogeneous traffic. Few remote areas which does not have accessibility for cable or DSL internet connection, this WiMAX provides efficient support [30]. mobile healthcare are the areas in which WiMAX is applied extensively [19]. The point-to-multipoint (PMP) mode and mesh mode are the two modes which are supported by the IEEE 802.16 MAC protocol. In the PMP mode, the