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In a network, bridging nodes are those nodes that from a topological perspective, are strategically located between highly connected regions of nodes. Thus, they have high values of the Bridging Centrality (BC) metric. We recently introduced the Localized Bridging Centrality (LBC) metric, which can identify such nodes via distributed computation, yet has an accuracy equal to that of the centralized...
This paper addresses the problem of optimal gateways selection and route selection to Internet in backbone wireless mesh networks (WMNs) where each mesh router (MR) is equipped with multiple radio interfaces and a subset of nodes serve as gateways to Internet. Several schemes have been proposed to route packets in WMNs or to select appropriate gateways to connect clients to Internet. However, most...
The wireless mesh network and the associated IEEE 802.11s standard have attracted an enormous amount of research in the wireless research community in the past few years. Nevertheless, WMN architecture has not received much needed attention compared to other topics in this area of research. Based on topological differences, various network architectures are possible for WMNs, and we believe such architectures...
Wireless Mesh Network is a new broadband wireless network structure, That is, a high-capacity, high-speed distribution network, It is different from traditional wireless networks, can be seen as the integration of wireless LAN and mobile Ad hoc networks, and it played both advantages, is a wireless version of the Internet. Wireless Mesh networks are gradually expanding into the civilian commercial...
Because of the high cost of construction and maintenance of infrastructure-based networks, researchers have concentrated their efforts on studying wireless mesh/relay networks with lower cost and high scalability. Due to the demand for real-time multimedia communication in heterogeneous networks, IEEE 802.16 multi-hop mesh/relay networks with IEEE 802.11e WLANs for QoS support can be an effective...
Wireless mesh networking (WMN), the static mesh routers (MRs) cooperatively relay each other packets to the Internet Gateway (IGW). The routing protocols assume all the nodes in the network to be non-malicious. However, the open architecture of WMNs paves way to malicious attackers who can exploit hidden loopholes in the routing protocol. In this paper, we mainly focus on the vulnerability of the...
Mesh router (MR) placement is one of the fundamental issues that need to be addressed carefully to achieve a desired performance of a wireless mesh network (WMN). The objective of the MR placement schemes is to systematically determine the minimal number of MRs and their positions while satisfying various constraints, such as coverage, connectivity, traffic demand, etc. This paper explores the solution...
In this paper we have considered the channel assignment problem in multi-channel multi-radio wireless mesh networks. The problem is to assign channels to links in the network with the original topology preservation, and aim at minimizing the overall network interference which is proved to be NP-hard. We have first illustrated that the conversion from the channel assignment problem to the max k-cut...
In this paper, we study the problem of downlink bandwidth allocation in a non-cooperative IEEE 802.16 OFDM/TDMA based wireless mesh network, and propose an auction based framework in which the gateway, equipped with the precious high speed Internet connection, serves as the auctioneer while the first-level mesh routers (MRs) (i.e., those with direct wireless connections to the gateway) act as bidders...
Nowadays public Internet access in residential areas is provided via fixed legacy wired infrastructure. Alternately, this paper analyzes a low cost, easy-to-install 802.11s wireless mesh based solution to ensure the transition to a network operating in a wireless environment. The presented simulations for the considered scenario take into account the quality of service provided to the end consumer,...
Multi-radio wireless mesh networks (MR-WMNs) are being increasingly deployed to provide affordable Internet access on large residential areas. MR-WMNs allow the supported mesh clients (MCs) to access the Internet gateway by multi-hop packet forwarding over the mesh routers (MRs), which can be equipped with multiple radio interfaces. In such a scenario, the routing protocol should (i) decide the address...
Recently, wireless mesh networks (WMNs) have attracted attention as a way to provide alternative Internet connectivity to rural areas or communities. In WMNs, wireless access points communicate with each other wirelessly, forming a true wireless mesh based access network of mesh relay nodes (MRNs). A major problem is, however, scalability of WMNs as well as MAC and PHY layer overhead for packet transmission...
When there is no wired connectivity, wireless mesh networks (WMNs) can provide Internet access with lower cost and greater flexibility than traditional approaches. This has motivated the design of new protocols and algorithms for WMNs, and recently the deployment of experimental prototypes. In this paper we add to these previous works with the performance evaluation of a first CARMEN deployment, with...
In these days, IEEE802.16 protocol is being developed and in the next years, 802.16 modems will be used in every house to connect to the Internet through base-stations in both urban and rural areas. Since user bandwidth for connection to the Internet is limited, a large fraction of each modempsilas bandwidth is not used. In this paper, we propose an architecture to construct a public peer-to-peer...
Wireless mesh networks (WMNs) have recently evoked much research attention as a novel technology for last-mile broadband Internet access. When designing a WMN, gateway placement is significant for it determines the total network throughput. To address this problem, a novel gateway placement approach is proposed in this paper, in which three objectives are optimized, i.e. the number of gateways, the...
Wireless mesh network has been increasingly attracting attentions as enabling technology not only for access network to the Internet but for application oriented network. To strengthen reliability of wireless mesh network, adaptive load-balanced routing to avoid congestion will be the key technology. This paper presents a novel concept of multipath routing with load balancing capability based on periodical...
Wireless mesh network (WMN) appears to be a promising alternative for next generation wireless networking. Wireless mesh networks have applications ranging from civilian wireless Internet applications to tactical and emergency response applications. Though wireless mesh networks appear as a viable alternative to the existing wireless infrastructure, there are still many issues which require more investigation...
Wireless mesh networks used for broadband access may be equipped with multiple Internet gateways. Using airtime metric as the main criterion for path selection is an effective method for achieving load-balancing in such a multi-homed mesh network. In this paper, we describe how the radio-aware path selection using airtime as a metric can be implemented in order to achieve this functionality, based...
A novel video monitoring system is proposed to provides a more excellent solution for security. The core architecture of this system is constructed by using wireless mesh network (WMN), which has emerged in recent years. WMN is dynamically self-organized and self-configured and can provide better services than other wireless networks. The basic network of this system is divided into two layers: access...
The wireless mesh network (WMN) is a novel wireless network architecture that puts several wireless routers into wireless ad hoc networks for mobile nodes to access the Internet. Due to the similarity in network topology between WMN and the Mobile ad hoc network (MANET), the routing algorithm from MANET can be adopted to WMN. Traditionally, the routing algorithms in MANET choose the shortest route...
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