Abstract
AbstractMulti-hop, multi-channel, and multi-radio wireless mesh networks (WMNs) are emerging as promising field of wireless technology with self-organizing and self-healing features for internet and real time applications, i.e., VoIP and Video over IP. Interoperability feature of WMNs have made them to integrate easily with other network technologies like wired networks, WiFi, WiMax, MANETs, and cellular networks. WMNs are gaining popularity due to their high network throughput which highly depends on the routing procedures. Routing algorithms like optimized link state routing protocol and dynamic source routing make efficient routing decisions on the basis of routing metrics which actually predict the cost of link quality. Most of the routing protocols and routing metrics implemented in WMNs are actually designed for mobile ad hoc networks (MANETs). Since WMNs have different characteristics and limitations as compared to MANETs, so the routing metrics design for MANETs do not perform well in WMNs. Furthermore, quality of service (QoS) and throughput of the network in WMNs can be enhanced by using cross layer routing approach and by deploying multi-channel multi-radio (MCMR) scenarios in each relay node. This article discusses a design taxonomy, limitations and qualitative comparison of existing routing metrics for QoS in MCMR WMNs with respect to routing parameters, i.e., transmission rate, inter-flow interference, intra-flow interference, congestion, and channel diversity. Moreover, our taxonomy also opens the door up for new research areas in the design of cross layer routing metrics for MCMR radio WMNs for high throughput IP connectivity.
Highlights
Wireless mesh networks (WMNs) are cooperative multihop, self-organizing, self-configuring, self-healing, and fault tolerant communication networks
These components are explained in detail as follows: Mesh gateway routers act as a network backhaul for communality networks with bridging and routing functionality which allow them to incorporate with different wired and wireless networks like Ethernet, mobile ad hoc wireless networks (MANETS), wireless sensor networks (WSNs), Wi-Fi, VANETS, and WiMax [15]
Mesh routers are equipped with the bridging functionality in order to integrate with other networks like wired networks, WiFi, mobile ad hoc networks (MANETs) and vehicular ad hoc networks (VANETs) as shown in the Figure 2. multi-hop cellular networks is an example of hybrid WMNs [16]
Summary
Wireless mesh networks (WMNs) are cooperative multihop, self-organizing, self-configuring, self-healing, and fault tolerant communication networks. Mesh gateway routers provide internet access to the network, mesh routers develop the main backbone of the wireless network where as mesh clients serve as a end user devices in the network These components are explained in detail as follows: Mesh gateway routers act as a network backhaul for communality networks with bridging and routing functionality which allow them to incorporate with different wired and wireless networks like Ethernet, mobile ad hoc wireless networks (MANETS), wireless sensor networks (WSNs), Wi-Fi, VANETS, and WiMax [15]. Hierarchical WMNs consist of a hierarchy in which mesh gateway routers are at the top with bridging functionality for backhaul internet connectivity, mesh routers are in the middle with self configuring and self healing functionality to act as a network backbone and mesh clients are at the bottom to serve as an end user devices as shown in the Figure 2. Mesh routers are equipped with the bridging functionality in order to integrate with other networks like wired networks, WiFi, MANETs and VANETs as shown in the Figure 2. multi-hop cellular networks is an example of hybrid WMNs [16]
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