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With increase in size of wireless mesh networks so are problems on interference, load-imbalance, and congestion that lowers throughput significantly. Proposals to solve issues related to this problem include accurate accounting of the channel load so that traffic can be directed along calmer regions of the networks reaching destination in time. Load aware routing metrics have been proposed for this...
This paper applies the theory of Evolutionary Game to QoS routing algorithm for wireless mesh networks which can not only improve the performance of traditional QoS routing protocols but also be able to reduce the cost of the routing algorithm.
Wireless Mesh Networks (WMNs) are gaining popularity due to the features provided, especially the low cost and self-configuration ability. In WMNs, the data traffic is transmitted through intermediate nodes and a number of packets are dropped during the transmission due to various reasons. One significant reason is the limitation of network resources such as bandwidth and buffer size. Because of these...
The key challenges of high-throughput data delivery in multi-radio multi-channel Wireless Mesh Networks (WMNs) are fluctuating channel conditions, dynamic traffic flows, co-channel interferences, congestion, etc. In this paper, we first formulate a mixed integer non-linear programming (MINLP) optimization framework that chooses, at each router, a number of outgoing link-channel pairs and allocates...
Wi-Fi Mesh Community has turn out to be an important area community to offer internet to challenge the thrown domains and wireless link in metropolitan environments. In this paper, hassle of figuring out the most to be had bandwidth direction is targeted, which is an essential problem in helping pleasant-of-carrier in WMCs. Due to the concept of interference, bandwidth, which is a familiar challenging...
To deliver user traffic in a wireless mesh network, mesh stations equipped with multiple wireless interfaces communicate with one another utilizing multiple orthogonal channels. Channel assignment in such an environment is to assign one channel to each interface to minimize co-channel interference among wireless links while preserving link connectivity. The interference and connectivity objectives...
In this paper, we investigate the problem concerning about how to construct an interference-free multicast tree in the multi-channel multi-radio multi-rate wireless mesh networks with the goal of maximizing the number of clients served by the tree. This problem is referred as the profit-based multi-rate multicast tree (PMMT) problem. With the joint consideration of multicast routing, channel assignment...
In multi-radio multi-channel (MRMC) WMNs, interference alleviation is affected through several network design techniques e.g., channel assignment (CA), link scheduling, routing etc., intelligent CA schemes being the most effective tool for interference mitigation. CA in WMNs is an NP-Hard problem, and makes optimality a desired yet elusive goal in real-time deployments which are characterized by fast...
Although many works exist on the subject, the real impact of partially-overlapping channels (POCs) on the capacity of multi-radio wireless mesh networks is not clearly established yet. In this paper, we propose a mathematical programming model to evaluate accurately the improvement in throughput that could be achieved if all the adjacent radio channels were exploited. Compared to previous works, our...
Wireless Mesh Networks (WMNs) is an emerging wireless technology which attracts more and more the attention not only of service providers and enterprises, but also researchers and academicians. In this paper, we are interested by the specification and the analysis of the Channel Assignment process to improve WMNs capacities during the routing process. We give an algorithmic solution showing how to...
Wireless Mesh Networks provide a reliable, robust and resilient platform for broadband access. Main benefits of using Wireless Mesh Networks are their low cost, robustness, self healing, and self configuring properties. In Wireless Mesh Networks, routing metric determines the path from source to destination. Wireless link conditions can be affected by a number of factors including interference, congestion,...
A static channel assignment algorithm in multi-radio multi-channel WMN (Wireless Mesh Network) is proposed aiming to minimize the maximum link interference. The proposed algorithm is an approximation algorithm since the problem is NP-hard. We prove that the greedy channel assignment algorithm is a factor (2−1/k) algorithm, where k is the number of available orthogonal channels. Additionally, the greedy...
With the features provided by wireless mesh networks (WMN) and the increasing number of users, the Quality of Service (QoS) has become essential to support multimedia applications. In addition, employing the multichannel approach has led to the improvement of the network performance. However, selecting a path with the maximum available bandwidth to transmit data from the source to the destination...
Wireless Mesh Networks (WMNs) are providing a mesh which maintains favourable bandwidth of internet to a substantial region and is replacing wired networks. Scheduling has become an important challenge in WMN that improves performance of the system. Scheduling schedules the resources to serve different nodes in the network. We review the centralized scheduling with interference based assignment algorithm...
For wireless mesh networks using the IEEE 802.11 family of standards, carrier sensing mechanisms such as physical carrier sensing and virtual carrier sensing play a key role in determining goodput and overall network performance. However, inaccurate modelling of the effect of carrier sensing on goodput leads to poor decision making in mesh network roll out. More accurate models can be derived by analysing...
As multi-channel and multi radio networks are used widely, channel assignment scheme plays a vital role in function determination of wireless mesh networks. Nowadays, many channel assignment schemes are presented in order to increase the functionality of wireless networks. However most of the existing schemes aim interfering links on the target link in a level and it decreases network functionality...
In this paper, we propose a cross layer optimization technique for video transmission in multi-radio Wireless Mesh Networks (WMNs). WMNs are used as back haul to connect various networks such as Wi-Fi, Wi-MAX etc. to the internet. The presence of multiple radios in this networks increases the capacity but introduces an interference. Thus, designing a better routing metric to find optimal path is an...
Wireless Mesh Networks (WMNs) is an emerging and latest technology that is used to develop the new attractive applications for wireless network users. WMNs provide a good platform for many researchers to develop new innovative procedures and methods to improve the network performance in wireless enterprise backbone networks. WMNs have unique features like ease of deployment at low cost. By adding...
Wireless Mesh Networks (WMN) are considered as robust architecture to provide reliable connectivity to fixed and mobile users. The redundant infrastructure provided by WMN can be efficiently utilized using multipath routing. However, the performance gain of multipath routing mainly depends on efficient path selection protocols. The omni-directional wireless medium, unstable link quality and mutual...
Emerging wireless applications has made the issue of spectrum scarcity inevitable. To resolve this issue, cognitive radio networks are proposed. Cognitive Radios are intelligent adaptable devices which intelligently sense the spectrum and find out spectrum holes. In this paper, a Token based MAC protocol is proposed for cognitive radio wireless mesh networks. This protocol consists of three phases...
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