A Mobile Ad hoc NETwork (MANET) is a collection of wireless mobile computers forming temporary network without any existing wire line infrastructure. Due to the dynamic nature topology and resource constraints, routing in MANETs challenging task. Multipath can increase end-to-end throughput provide load balancing wired networks. However, its advantage not obvious because traffic along multiple paths may interfere with each other . In addition, accurate knowledge topology, finding disjoint...

The objective of process characterization is to demonstrate robustness manufacturing processes by understanding the relationship between key operating parameters and final performance. Technical information from study important for subsequent validation, this has become a regulatory expectation in recent years. Since performing at scale not practically feasible, development scale-down models that represent performance commercial essential achieve reliable characterization. In study, we...

A mobile ad hoc network (MANET) is a collection of wireless computers forming temporary with no existing wired infrastructure. Due to the dynamic nature topology and resource constraints, routing in MANETs challenging task. Distributing tasks fairly has eminent advantages, such as reducing possibility power depletion queuing delay hosts heavy duties. However, most current protocols for do not take load balancing into account. In this paper, we propose load-sensitive on-demand approach, which...

Software-defined networking (SDN) is a new approach to designing networks. SDN decouples and migrates network control from the hardware, which enables innovative efficient design operation. The SDN-based well adopted in data centers enterprises. In this paper, we state that beneficial multihop wireless networks like sensor (WSN) propose an architecture called SDSense. We novel principled of WSN design, where decompose functions as slow (e.g., topology control) fast congestion changing...

A virtual path connection (VPC) is a labelled which can be used to transport bundle of channel connections (VCCs) and manage the resources by these connections. The network organized as collection VPCs form VPC, or logical, overlay network. If are permanent semi-permanent have reserved capacity, establishing new VCCs requires simple admission decisions at VPC terminators existing VPCs. This would enable faster establishment since transit nodes not involved in setup. concept also allows...

A Mobile Ad hoc NETwork(MANET) is a collection of wireless mobile computers forming temporary network without any existing wire line infrastructure. Due to the dynamic nature topologies and resource constraints, routing in MANETs challenging task. Multipath can increase end-to-end throughput provide load balancing wired networks. However, its advantage not obvious ad networks because traffic flows along multiple paths may interfere with each other. In addition, accurate knowledge topology,...

QoS routing has been shown to be NP-hard. A recent study of its hardness shows that the "worst-case" may not occur in practice (Kuipers mieghem, 2003). This suggests there exist fast exact algorithms for multi-constraint shortest path (MCSP) problem, an instance routing. Search techniques such as A* and IDA* solve hard problems exactly polynomial time. In Li et al. (2005), we deploy idea iterative deepening search design IDA*_MCSP, show efficiency by extensive empirical study. this paper,...

In this paper we consider wireless sensor networks (WSNs) whose nodes can fail independently of each other during normal operation. For successful operation, a network is required to provide sensing coverage an aggregate area that exceeds given application-specific requirement. We formulate reliability problem quantifies the likelihood be in operating state where condition satisfied. Existing results show #P-hard even when WSN restricted rectangular grid with single corner-located sink....

A protocol for the reliable multicast of data to mobile hosts is described. logical ring maintained between all base stations that handle traffic same group. token passing enforces a consistent view with respect frames are considered delivered mobiles. The interaction multicasting and handoff events mobiles controlled by special protocol. description management also given. We use simulation results illustrate feasibility approach reveal performance interplay station buffer size rotation frequency.

Multihop wireless networks have unique features such as lossy links and interference. Both interference affect the maximum achievable throughput of a network. Some energy constraints. Lossy also efficiency due to retransmissions broadcasting. We investigate impact on minimax utilization. These can be modeled linear programming optimization problems. give optimal solutions for both flow-based destination-based routing. Experiments show that do significant throughput. There are cases where...

A Mobile Ad hoc NETwork (MANET) is a collection of wireless mobile computers forming temporary network without any existing wire line infrastructure. Due to the dynamic nature topology, established routes in MANET may be disconnected because node mobility. It difficult support real-time traffic if are broken and re-constructed frequently. In this paper, we propose LOcation Trace Aided Routing (LOTAR) protocol, which utilizes nodes' location information assist routing reduce disruption flow....

We estimate that approximately 40% of current Internet traffic is due to Web crawlers retrieving pages for indexing. address this problem by introducing an efficient indexing system based on active networks. Our approach employs strategically placed routers constantly monitor passing traffic, analyze it, and then transmit the index data a dedicated back-end repository. simulations have shown up 30% more than crawler-based techniques.

Underwater sensor networks have received significant attention from the research community in recent years. Since radio signals face excessive absorption underwater environment, acoustic communication has been dominant physical layer medium literature. Although long range and omni-directional characteristics like terrestrial radio, it suffers propagation delay water very low bandwidth. In this paper, we consider design of an optical network based on cost LEDs photodiodes. Such system shorter...

Wireless Sensor Networks (WSNs) have a wide range of applications including smart home and environmental monitoring systems. Sensors in such systems gather propagate critical information to sinks (data collectors). Reliability is crucial issue these networks but the wireless medium subject interference noise that can disrupt transmissions. Thus we design reliable routing topology construction framework for WSNs evaluate proposed topologies' performance. We observe there are tradeoffs...

Spanning trees rooted at a sink node are often employed for data collection in sensor networks. The node's double task of sensing and forwarding traffic from other nodes results energy depletion which is dependent on the constructed spanning tree. approach taken this paper to extend lifetime network by judiciously recalculating tree adjust it pro-actively before fail due total depletion. proposed scheme attempts make energy-critical leaf nodes, or, as last resort, balance load handled them....

Received Signal Strength Indication (RSSI) measurements are known to be noisy and exhibit high degree of variability, yet massive sets RSSI data streamed collected with the purpose using them for localization. In this paper we determine that full resolution is unnecessary propose, based on an evaluation indoor localization experiments, a technique modest computational effort, Genetic Algorithms, how best quantize measurements. Our approach treats algorithm as "black box" and, hence, its...

We consider wireless sensor networks (WSNs) deployed in the plane for area surveillance against intrusion attacks. Sensor nodes often employ low-cost sensing and communication modules that are prone to random failure especially when operated harsh environments. To quantify network's ability monitor area, we formalize breach path detection reliability (BPDREL) problem takes as input a specified set of entry-exit pairs network sides, calls computing likelihood can detect paths between any...

Wireless Mobile Ad hoc NETworks (MANET) provide end-users with a flexible and cheap way to access exchange information. While most research in MANETs is oriented the general application environments, little work done utilize specific characteristics of particular scenarios, which end-users' behavior quite predictable or controllable. To deploy MANET for realistic system, behavior, profiles, can be used simplify implementation enhance network performance. We present scheme routing strategy...

Multiview video compression is important to the image based 3D applications. In this paper, we proposes a novel neighbor-based multiview scheme. It essentially MPEG2-like block-based particular, method decide stream encoding order presented. The resulting can better decorrelate spatial redundancies among multiple streams than center approach. Experimental results confirm superiority of proposed neighbor approach over and MPEG2 for compression.

We study the approaches to extending lifetime of Wireless Sensor Networks (WSNs) based on in-network data aggregation at First Hop (FH) away from each sensor source, followed by flow-based routing resulting traffic. introduce concept flow loss multiplier express impact conveyed data. A Mixed Integer Linear Programming (MILP) model is formulated for problem determining optimal FH nodes that maximise network lifetime. Heuristics are proposed obtain significant and prolong system To facilitate...

RP-CDMA is a wireless multiple access protocol that utilizes spreading codes and packet receiver to enhance link reliability performance. We apply multihop ad hoc network propose two significant extensions aimed at improving throughput reliability. Our simulations confirm can substantially improve performance, but level acknowledgement required ensure delivery across the network. investigate simple policy conclude it enables simultaneous high while maintaining low latency.

Today's mobile battery-powered communication devices require that users access chargers via wired and, recently, wireless recharging facilities. For a device departing from location with given energy “budget”, plausible strategy is to seek charger once the exhausted. We present model of nodes captures paths followed by depleted seeking, possibly detour, reach charger. The derived location-dependent node density distribution used express congestion network whose capacity nodes. boundaries,...