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In this paper, we study the problem of routing, bandwidth and flow assignment in wireless body area networks (BANs). We present an adaptive joint routing and bandwidth allocation protocol for traffic streaming in BAN. Our solution considers BAN for real-time data streaming applications, where the real-time nature of data streams is of critical importance for providing a useful and efficient sensorial...
In video surveillance systems, one of the key design requirements is that video throughput must not fall below a certain limit as the contents must be adequately perceivable. In this paper, we address the problem of guaranteed transportation of critical video flows in wireless WiMAX mesh networks. Our solution is based on the insight that in seeking to construct optimal routing trees and to maximize...
This paper revisits the problem of multisession multicast tree construction with bandwidth allocation in wireless sensor networks. Previous work has shown that when the goal is to find multicast routing tree, the problem becomes NP-complete. In this work, we present a heuristic Energy-Efficient Multisession Multicast protocol (EEMM) that uses fuzzy logic to evaluate nodes' and network conditions during...
In this paper, we study the problem of routing, bandwidth and flow assignment in Wireless Body Area Networks (BANs). Our solution considers BAN for real-time data streaming applications, where the real-time nature of data streams is of critical importance for providing a useful and efficient sensorial feedback for the user while system lifetime should be maximized. Thus, bandwidth and energy efficiency...
In this work, we focus on Body Area Networks (BANs) for real-time data streaming applications, where the realtime nature of data streams is of critical importance for providing a useful and efficient sensorial feedback for the user while system lifetime should be maximized. Thus, bandwidth, throughput and energy efficiency of the communication protocol must be carefully optimized. In this paper, we...
In this paper, we address the problem of guaranteed transmission of video flows in the context of WiMAX mesh networks for video surveillance purposes. The main design issue in such networks is to maximize the number of flows that can be accommodated in critical situations. Guaranteeing a throughput for individual flows in a multi-hop WiMAX network is a challenging task. We consider a specific dedicated...
In Body Area Networks (BANs), quality of service is needed to provide reliable data communication over prioritized data streams coming from energy constrained sensors attached to, or possibly implanted in, patients. In this work, we focus on BAN for real-time data streaming applications, where the real-time nature of data streams is of critical importance for providing a useful and efficient sensorial...
Wireless Body Area Networks (BANs) have the ability of gathering and sending on-body measurements to a terminal. Autonomous nodes are deployed on the body to monitor vital signs and environmental parameters. The IEEE 802.15.6 standard mainly specifies physical and medium access for BANs. Routing is discussed as part of the link layer and multihop is not fully considered. Several studies state that...
In recent years, many topology control protocols have been developed for ad hoc and sensor networks environment. This paper presents the results of a detailed performance evaluation on three of these protocols: Optimized Topology Control protocol (OTC), Energy-efficient coordination protocol (Span) and Geographical Adaptive Fidelity protocol (GAF). Our main goal for the performance investigation is...
In order to evaluate a vehicular network performance it is important to develop and use mobility models that accurately capture the realistic mobility characteristics of moving vehicles. In this paper, we present performance evaluation of various routing protocols including SIFT, GPSR and GOSR using different mobility models such as Random Waypoint Model (RWM), Fluid Traffic Model (FTM) and Intelligent...
A critical issue in wireless sensor networks isrepresented by the limited availability of energy withinsensor nodes. An effective approach for energy conservationis scheduling sleep intervals for extraneous nodes, while theremaining nodes stay active to provide continuous service.Most previous solutions assumed a perfect radio conditionwith a static, circular coverage. However, in real situations,radio...
The main design challenge for wireless sensor network solutions is energy efficiency to prolong the network operable lifetime. Since most energy is spent for radio communications, an effective approach for energy conservation is scheduling sleep intervals for extraneous nodes, while the remaining nodes stay active to provide continuous service. Assuming node position information is unavailable we...
The past few years have seen an increasing interest in the development of vehicular ad hoc networks resulting in many routing protocols proposals. Scalability issues in such networks are attracting increasing attention these days. To improve data delivery performance in large scale networks, we propose SIFT, a trajectory based routing scheme that requires sparse infrastructure and rely on low quality...
The past few years have seen an increasing interest in the development of vehicular ad hoc networks resulting in many routing protocols proposals. This paper presents the results of a detailed performance evaluation of three of these protocols selected from different categories: geographic routing (i.e., GPSR), geographic opportunistic routing (i.e., GOSR), and trajectory based routing (i.e., SIFT)...
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