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In this paper, a routing algorithm for Wireless Mesh Networks (WMNs) over Ultra Wide Band (UWB) is proposed for High Definition (HD) video transmission. In order to support multiple services smoothly over UWB, a new routing algorithm called Service Aided UWB Routing is developed. Unlike conventional routing algorithms, the proposed method is driven by application services' requirements, which determines...
This paper deals with two fundamental joint routing and scheduling problems in multi-hop wireless mesh networks (WMNs) employing time division multiple access (TDMA). The problems pertain to incremental update of schedules as some of the existing flows terminate and new flow demands are received. In the first problem, referred to as single flow scheduling (SFS) problem, we are given a set of ongoing...
This paper studies the problem of multicast routing and channel assignment in multi-channel and multi-interface wireless mesh networks. The advantage of the wireless broadcast's nature is used to reduce interference and improve network throughput. The employed network model is first described. Next, a heuristic channel assignment algorithm that makes use of the wireless broadcast's advantage is presented...
In recent years wireless mesh networks have been deployed and grown in popularity in many metropolitan areas. The deployment of such networks has allowed clients to gain access to publicly available broadband networks. The lack of standards and support for multicasting over wireless mesh networks makes this area very challenging as well as providing much scope for improvement. For first time in this...
We investigate the risk associated with multihop wireless communications due to eavesdropping. When the same message traverses cross a multihop wireless network, potential security leaks may occur because of intelligent and collaborative eavesdroppers even if all individual links from source to destination have signal leakage below a security threshold. We termed this phenomenon ??cumulative security...
QoS routing problem in wireless mesh networks is a NP-complete problem, and it is hard to get the global solution with the traditional algorithm. In this paper, we adopt a novel dynamic ant genetic hybrid algorithm to solve QoS unicast routing problem for wireless mesh network, whose innovation are using the best melting point evaluation strategy to control the calling of the two algorithms dynamically...
To avoid congestion caused by some nodes overloaded and mesh points (MPs) becoming bottleneck in wireless mesh networks (WMNs), this paper proposed a new routing protocol called CLDSR-LB (cross-layer dynamic source routing protocol with load balancing). In order to avoid nodes overloaded, CLDSR-LB utilizes the idea of multi-metric and cross-layer and selects an optimal route by estimating the residual...
As a result of the nature of routing algorithm in a wireless mesh networks (WMNs), and although there is more than one hotspot access point (HSAP) in a WMN, the traffic load of each HSAP is quite different. A HSAP may be very busy during a particular period while the others are in very light loads, in consequence, of the inherent characteristic of routing algorithm of WMN. A traffic load concentrates...
We study traffic routing in wireless mesh networks, where most of the nodes are fixed and few of them are mobile. We assume real-time multimedia stream communications between a fixed server and mobile nodes. In particular, through simulation we investigate the performance of the BATMAN protocol and compare it against that of some of the most representative schemes for routing in ad hoc and mesh networks...
Most WSN routing protocols select route based on hop count. Efficient routing metric should consider both inter-flow and intra-flow interference. A new minimum route-interference routing metric for multi-radio WMN is proposed. The path which has a minimum total interference can be found by using this metric. Simulation result shows that network performance can be significantly improved with the new...
Wireless mesh networks (WMNs) technologies which accede to the advantages of ad hoc networks have received much attention. Transmission power control and routing selections are critical issues in the past researches of ad hoc networks. Variable transmission power levels impact the node connectivity and affect routing selections. Further, different power levels cause different network spatial reusability...
Channel assignment algorithm has a direct impact on the performance of multi-channel wireless network. The wireless networkpsilas heterogeneous characteristic makes its channel assignment algorithm more complex. To address this issue, this paper gives a solution. By sharing neighbor nodespsila interface-channel information and channel usage frequency statistics, an integrated channel selection metric-CGSBM...
Many efforts have been devoted to maximizing network throughput in a multi-channel multi-radio wireless mesh network. Current solutions are based on either pure static or pure dynamic channel allocation approaches. In this paper, we propose a hybrid multi-channel multi-radio wireless mesh networking architecture, where each mesh node has both static and dynamic interfaces. We first present an Adaptive...
Wireless mesh networking has been a cost-effective technology that provides wide-coverage broadband wireless network services. However, security and privacy in this proliferated network environment have not been widely studied. In this work, we propose a cross-layer based anomaly intrusion detection system (IDS) to accommodate the integrated property of routing protocols with link information in wireless...
Cooperative communication is a new physical layer technique which improves link capacity by exploiting broadcast nature and spatial diversity of wireless channel. The introduction of cooperative communication in wireless networks changes the traditional definition of link and the contention relationship among links. In this paper, we focus on cooperative communication aware routing protocol design...
The availability of cost-effective wireless network interface cards has recently made it possible to equip wireless mesh routers with multiple interfaces. The problem how to assign channels to those interfaces has been consequently studied and shown to be strictly related to the routing problem. In a previous work, we have proposed a Layer-2.5 forwarding paradigm for multi-radio wireless mesh networks...
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...
In this paper, the problem of estimating the link quality in mesh networks has been considered. Such a process is a major task to develop an efficient network layer, since it allows routing protocols to efficiently use neighbors as relays for multi-hop communications. In the last years, a number of link-quality aware routing metrics have been proposed and analyzed. However, such metrics usually adopt...
A wireless mesh network (WMN) is expected to be a key enabler for next generation networking due to its infrastructure-less strengths such as scalability, costefficient rapid deployment, and long distance communications. To boost the strength of WMNs, it is required to balance loads among multiple gateways as well as mesh nodes. However, there have been only few practical and easily-implementable...
Wireless mesh networks are increasingly used as multipurpose networks, i.e., they serve multiple objectives and different applications simultaneously. As a consequence, a one-size-fits-all routing solution is difficult to achieve, particularly when the performance and QoS expectations of these applications differ. This work proposes CMR (Configurable Mesh Routing), a toolkit that supports the discovery...
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