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An important consideration in efficient routing design is the nature of access network and application requirements. Consequently, routing algorithm designed for general mobile ad hoc networks may not be adequate for Wireless Mesh Networks (WMN) deployment because of significant architectural differences. Furthermore, recent Internet traffic dominated by video data transmission in real-time requires...
The pioneering work of Gupta and Kumar [1] has inspired many subsequent studies on asymptotically achievable per node throughput and delay analysis for wireless networks. In this paper, we evaluate the delay and maximum achievable per node throughput of a heterogeneous wireless mesh network (HWMN). We derive an analytical model which incorporates diffusion approximation method [2] and then compare...
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...
Judiciously assigning channels to a wireless mesh network can substantially enhance capacity of the network. One particular flavor of mesh network is that with a tree topology, which has the property that all traffic passes through one central point. Usually the allocation problem is linked to problems of routing, load, and measurements of interference. In this paper we take advantage of the restrictions...
The links in an ad hoc or wireless mesh network are normally kept alive by the exchange of beacon-messages between neighboring nodes. These beacons are prone to collisions with traffic from hidden nodes. If several beacons are lost due to overlapping transmissions, the node expecting the beacons erroneously assumes that the link is down. This is called an apparent link-failure. This paper provides...
Wireless mesh networks (WMN) are receiving increasing development, which configuration multi-radio multi-channel nodes to improve channel resources utilization in the network topology architecture and achieve increasing efficient on the network throughput. The main goal of channel assignment algorithms in multi-radio multi-channel wireless mesh networks is to minimize the overall interference and...
Against large overhead of routing discovery and change of topology in Wireless Mesh network, a new node-disjoint multi-path routing algorithm of wireless Mesh network - NDOUTE is proposed. This algorithm is based on AOMDV, introducing the source route ideas of DSR. The new addition of “source routing sequence” and “broadcasting node table” in RREQ, RREP packet avoids the reverse routing loop, provides...
For tactical networks, rapid reconfiguration and recovery of network topology is highly required. In this paper, we propose an effective tactical network architecture with WMN(Wireless Mesh Network)-based backbone. To reduce the computational and maintenance complexities of tactical networks, a hierarchical architecture is considered in the proposed architecture. The proposed architecture is called...
Being as a significant section of security issues in Wireless Mesh Network (WMN), the research and application about Intrusion Detection System (IDS) in WMN are just getting start. The characters and requirements for IDS in WMN are described and analyzed firstly; Based on the Hierarchical Proxy-based Topology (HPT) structure in Mesh network, an efficient proxy-based IDS scheme is proposed, the working...
The broadcast nature of wireless transmission makes network coding possible in wireless networks. The state-of-the-art algorithm, referred to as COPE, utilizes opportunistic listening to encode packets from different unicast sessions. In theory, the network coding gain of COPE is only dependent on the network topology. In practice, it is also dependent on the traffic pattern and MAC layer scheduling...
Wireless Mesh Networks (WMNs) with chain topologies are very useful in road and railroad transportation or in tunnel and mine applications. The proposed protocols for WMNs usually support best-effort traffic or some kind of Quality of Service (QoS). However, some applications such as remote-controlled machines in industrial control networks have Hard Real-Time (HRT) requirements, i.e., strict deadlines...
Multi-radio nodes in wireless mesh networks introduce extra complexity in utilizing channel resources. Depending on the configuration of the radios, bad mappings between radio to wireless frequencies may result in sub-optimal network topologies. Static channel assignments in wireless mesh networks have been studied in theory and through simulation but very little work has been done through experiments...
We propose an efficient way of constructing the wireless mesh structure associated with molecular MAC, a multichannel access method designed for efficient packet forwarding. We base our role assignment on a restricted weakly connected dominating set structure. After presenting a formal definition of the role assignment problem, we prove its NP-completeness. Then, we propose a centralized 2-approximation...
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...
Wireless Mesh Network (WMN) is an emerging communication paradigm to enable resilient, cost-efficient and reliable services for the future-generation wireless networks. In this paper, we study the problem of multipoint-to-multipoint (M2M) multicasting in a WMN which aims to use the minimum number of time slots to exchange messages among a group of k mesh nodes in a multi-hop WMN with n mesh nodes...
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 wireless mesh networks, joint optimization of routing and link scheduling within a time-division multiplexing approach is commonly sought to provide end users with high data rates. However, the strategies proposed to this end usually proceed by means of complex optimization models, which also often rely on oversimplified assumptions, especially for what concerns wireless interference. In the present...
The wireless mesh network (WMN) backbone is usually comprised of stationary nodes but the transient nature of wireless links results in changing network topologies. Topology Control (TC) aims to preserve network connectivity in ad hoc and mesh networks and an abundance of theoretical results on the effectiveness of TC exist. Practical evaluations of TC schemes that provide gradual transceiver power...
Next-generation wireless mobile communications will be driven by converged networks that integrate disparate technologies and services. Wireless Mesh Networks (WMNs) are expected to be one of the next generation of wireless interconnection technologies, providing flexible high bandwidth wireless backhaul over large geographical areas. While single radio mesh nodes operating on a single channel suffer...
Presently, the IEEE 802.11s task group is defining a set of specifications for a wireless mesh standard based on IEEE 802.11 standard. The mobility management is one of the critical operations of any 802.11 network. In this paper we propose an assistive system that can improve the re-association mechanism which takes place when a mobile device roams in a mesh network. This is an empirical study of...
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