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Wireless mesh networks (WMNs) have attracted increasing attention from the research community as a high-performance and low-cost solution to last-mile broadband Internet access. However, it remains an open challenge to provide mesh clients with efficient handoff among different mesh routers. In this paper, we address channel switching efficiency and load balancing capability during the handoff process...
Wireless Mesh Networks (WMNs) is a promising key technology for next generation wireless backhauling that is expected to support various types of applications with different quality-of-service (QoS) demands. Advanced antenna techniques, novel scheduling algorithms and routing schemes have attracted increased research interests aiming to optimize the performance of WMNs and satisfy their vast and diverse...
The energy constraint bottleneck in the wireless sensor networks (WSN) exist objectively. To reduce energy consumption and ensure the Quality of Service (QoS) in data transmission, a method of solving the QoS multicast routing in WSN by quantum particle swarm optimization algorithm (QPSO). The algorithm is based on PSO, quantum-bit, principle of superposition and quantum gates. By the premise of avoiding...
In this paper we address the issue of designing a routing scheme for ad hoc networks, which aims at maximizing the number of flows with satisfied bandwidth demands. In general, selecting a multi-hop wireless path for bandwidth-guaranteed flows is challenging because of the broadcast nature of the wireless medium. Thus, in this study we formulate the route selection problem by considering a synchronized...
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...
Traditional approaches for testing MANET protocols and applications prior to field experimentation often involve simulation tools or small-sized physical testbeds. However, simulation tools typically do not run in real-time and rely on simplified models rather than a real system, while physical testbeds are prohibitively expensive to build and operate. A more practical method is to use emulation tools...
The topology control for guaranteeing QoS requirements of nodes might not have any solution because of the limited resources of nodes, e.g., the maximum transmitting power. In this case, the mobility of nodes can compensate for the shortage of resources and then makes a topology feasible. We propose the energy efficient mobility control algorithms for the QoS topology control with the least movement...
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,...
The QoS problem of wireless multimedia sensor networks, due to its distinctive features such as large amount of data transmission of audio, video, and images, becomes a hot research recently. In this paper, QoS parameters are discussed, and give the packet types and common definition of QoS parameters, describe the progress of QoS routing protocols for WMSNs, and QoS routing algorithms for WMSNs....
One of the most promising wireless technologies is Wireless Mesh Network (WMN). The aggregate capacity of wireless mesh networks can be improved significantly by providing each node with several Wireless Network Interface Cards (WNICs) and by using multiple channels in order to minimize the interference and to provide high performance in such networks. However, multiple WNICs in each node requires...
Ambient and pervasive networks is a new networking concept that targets forthcoming dynamic communication environments; characterized by presence of a multitude of different wireless devices, radio access technologies and network operators that can form instant inter-network agreements with each other. However, one challenge is the efficient utilization and management of the multi-radio resources...
Some real-time applications (such as Video On Demand) are sensitive to the perceived packet loss when using the network resources. Due to time-varying topological changes in a wireless ad hoc network, it is a challenging issue to provide this stringent QoS requirement of real-time applications. Each real-time application requires a specific level of packet loss guarantee. As multi-path routing has...
Wireless networks are a very challenging communication technology since their ability to be set everywhere and whenever. Among the several types of wireless systems, a new class of networks is gradually emerging: Wireless Mesh Networks (WMNs). A WMN is a distributed communication infrastructure organized in a mesh topology, which handles multi-hops connections and is capable of provide dependable...
Recently a great emphasis has been given on autonomous decentralized networks (ADNs) wherein constituent nodes carry out specific tasks collectively. Their dynamic and constrained nature along with the emerging need for offering quality of service (QoS) assurances drive the necessity for effective network control mechanisms. This study focuses on designing a robust and self-adaptable congestion control...
The telecommunications community has yet to agree upon a secure algorithm for wireless peer-to-peer routing. Current routing procedures use one of two methods: either rating the ldquotrustworthinessrdquo of a path like Pathrater, or relying on your neighbors' opinions of a paths' trustworthiness like Watchdog. Both methods have drawbacks that limit their widespread adoption by the community. The purpose...
Wireless mesh network (WMN) is a multi-hop wireless network with partial mesh topology, which can replace wired infrastructure backbone in a traditional wireless network, to wireless. It is an exciting new technology that has applications in defense, metro-area Internet access, and disaster management. WMNs are believed to be a highly promising technology and will play an increasingly important role...
This paper presents the fundaments of a new source-based path selection strategy for multi-hop wireless networks (MHWNs) applying a Multiple Attribute Decision Making (MADM) algorithm. The purpose of this on-going work is to investigate new methods for improving the overall performance of such networks by exploiting paths traditionally disregarded by routing protocols. The main idea is to avoid unnecessary...
The demand for QoS has made its support an essential component in today's wireless networks. The use of directional antennas in multi-hop wireless networks is known to provide substantial increase in the utilization of the wireless medium. However its effectiveness in providing QoS assured routing is unexplored. In this paper, we study the problem of bandwidth guaranteed routing in contention-based...
The following topics are dealt with: Ethernet simulation; signal processing theory; wireless communication; communication switching; routing; distributed communication; quality of service; peer-to-peer network; telecommunication security; VoIP; mobile networking; protocols; multimedia communication; multicast communication; network management; and reliability.
In this paper we consider multi-hop wireless mesh networks intended to provide Internet connectivity to both end users and hotspots. In such networks mechanisms for provisioning QoS for delay sensitive flows arise as an important topic. In this context, we focus on the non-bifurcated (single path) routing of such flows as a means of allowing all packets in any flow to receive uniformly controlled...
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