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The increasing usage of wireless networks creates new challenges for wireless access providers. On the one hand, providers want to satisfy the user demands but on the other hand, they try to reduce the operational costs by decreasing the energy consumption. In this paper, we evaluate the trade-off between energy efficiency and quality of experience for a wireless mesh testbed. The results show that...
In this paper we design, implement and evaluate a practical flow-based routing architecture for WMNs, called TALB, which exploits traffic measurements to balance traffic load over available mesh paths and gateways. To achieve throughput enhancements while mitigating inter-flow interference, TALB implements a \emph{Constrained Maximal Bottleneck Path} computation algorithm to maximize the bottleneck...
Wireless Mesh Network (WMN) is a self-configuring, self-organizing and self-healing communications network in a mesh topology. Every node collaborates on establishing routing path to communicate with each other or use the Internet services. Even though WMN increases reliability and provides high bandwidth, selfish or malicious nodes may disrupt the network-wide collaboration and abuse the available...
Traffic routing and gateway selection for Internet flows play a crucial role in determining the performance of WMNs. Optimal routing strategies have been derived under the assumption that the traffic demands are static and known a priori, or that can be accurately predicted. However, the effectiveness of most of the existing optimization-based routing solutions is still to be demonstrated in real-world...
In a wireless mesh network (WMN), mesh clients (MCs) access the Internet through the wireless backbone formed by the Internet Gateways (IGWs) and Mesh Routers (MRs). An IGW as the traffic center may easily become the congestion center in a WMN. The load balancing between IGWs will reduce the traffic congestion thereby improving the network performance and providing a better quality of service (QoS)...
In a wireless mesh network (WMN) connected to the outer infrastructure such as the Internet, one or more gateways to connect to the outer network as well as surrounding nodes may frequently be congested by concentration of traffic from mobile stations. To resolve the congestion, we propose a new congestion control scheme for layer 3 WMNs. In the proposed scheme, nodes composing WMN backbone (MNs:...
Wireless mesh networks (WMNs) are an emerging architecture for multi-hop transmission where the nodes have relative fixed positions and communicate to the Internet through one or more gateways. Our goal is to maximize the network utilization by balancing the traffic load, while providing fair service and QoS guarantees to the users. In this paper, we provide an efficient method that elegantly balances...
In wireless mesh networks, the end-to-end throughput of a flow over a multiple-hop wireless link rapidly decreases as the hop-count between the source and destination nodes increases, and the flows that travel over a path of more than 4-5 hops from its source node eventually starve. To alleviate this unfairness, we propose a weighted random early detection (RED) mechanism that has a different dropping...
Current Internet use is evolving, users are becoming mobile and are expecting data services on the go. This fact presents big challenges and opportunities to operators, which see the increase in data services as a big market still to be exploited. However, current cellular technologies cannot accommodate the demand that will arise when the true mobile Internet evolves. Addressing these challenges,...
Low-cost wireless routers are changing the way people connect to the Internet. They are also very cheap, albeit quite limited, Linux boxes. These attributes make them ideal candidates for wireless mesh routers. This paper presents a minimally invasive mechanism for redundant multipath routing in kernel-space to achieve high reliability with high throughput in a mesh network. This service is essential...
Wireless mesh networks have received considerable attention recently. If these networks were to reach their projected potential, some practical problems experienced in the first-generation deployments need to be addressed. One such problem is assuring that clients can share the (somewhat scarce) bandwidth fairly and that no client is forced to starve for bandwidth. We propose to make use of an aggregate...
Survivability of wireless mesh networks (WMNs) is a crucial issue that has not received enough attention in the literature. In this paper, we present a network coding-based protection scheme that overcomes the deficiencies in traditional proactive and reactive protection mechanisms. Proactive schemes ((1+1) protection) provide instantaneous recovery, but are resource-hungry. While reactive schemes...
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