GMPLS energy efficiency scheme for green photonic networks

Since its emergence the internet has been a significant part of today's modern living. Defined by its interconnections and routing policies, it has fuelled increased demands for provisioning of new more advanced services that are able to dynamically react to changes within the network. These services however, lead to enormous energy consumption in contrast to a global drive for a greener environment. Hence the existence of an optical infrastructure that complies with the principles of zero-carbon emission is imperative. Subsequently, in this paper, we present an energy model of Generalized Multi-Protocol Label Switching (GMPLS) network for more power efficient Green Photonic Networks. We are proposing a greener network design based on a novel routing algorithm to deliver power reduction through implementation of so called "Hibernation" approach. The scheme includes network topology such as group the nodes configuration, segmentation of the link/ports, and wavelength provisioning via partitioning. The performance evaluations of these energy saving schemes are investigated by including various challenging issue on "greening the internet" and reduces carbon footprint. In addition, to study the impact of wavelength request, blocking probability and power consumption in relation to network load is taken into account. A trade-off is observed between energy per bit, wavelengths offered (Erlang) and blocking probability as a result of the idling nodes

Assessment of worn textile antennas’ exposure on the physiological parameters and well-being of adults

This paper presents the assessment of short-term wireless body area network (WBAN) exposure, which is operated at the industrial, scientific, and medical (ISM) band (2.45 GHz) in the vicinity of the human body. The experiment utilizes two popular textile antenna topologies, a planar monopole and a patch antenna as the radiating sources. The objective of this experiment is to investigate whether the exposure from WBAN may influence the physiological parameters (body temperature, blood pressure, and heart rate) and the well-being of the wearer. Counter-balanced, crossover, and the single-blind method was applied in the experimental setup. P-value is the probability value, under the assumption of no effect or no difference (the null hypothesis) of obtaining a result equal to or more extreme than what was actually observed. If P<; 0.05, it indicates that P-value will be less than the level of significance. Thus, the null hypothesis (no effect or no difference) can be rejected, and it can be concluded that there exist effects to the respondents. The results showed that there is statistically no significant difference between the active exposure and the Sham (no exposure) which may affect the physiological parameters and well-being of the wearers, with P>0.05, which failed to reject the null hypothesis (no effect)

Performance evaluation of VANET QoS in presence of timing attack and sinkhole attack using OMNeT++

The growth in research advancement of vehicular Adhoc Network (VANET) has seen a significant rise in the security attack.In this paper we gives the simulation for quantitative investigate of VANET in presence of Timing attack and Sinkhole attack. We described the performance metrics and discover the effect and harm caused by Timing attack and Sinkhole attack, which directly affect the network Quality of Service (QoS).Our assessment results shows that the impact on VANET under Timing attack and Sinkhole attack varies potentially depending on number of vehicles, number of attacker vehicles.The impact of a Timing attack and Sinkhole attack increased significantly by increasing the number of attacker vehicles in several of the situations. While the number of attacks impact level continually effect on network performance with varying the number of vehicles. It has been perceived that in presence of Timing attack delay is increased approximately 80%. On the other hand, in presence of Sinkhole attack delay is increased approximately 72%. It implied that these attacks are harmful for network life and stand against safety application in VANET

Quality of service and traffic preemption for multi-protocol label switching / generalized multiprotocol label switching networks

The Multi-Protocol Label Switching (MPLS) framework is used in internet service provider (ISP) and as a backbone to Internet Protocol (IP) to provide guaranteed efficient bandwidth and Quality of Service (QoS) provisioning in the network. This project seeks to investigate the QoS using DiffServ mechanism over MPLS and then compare the network performance in legacy networks. As a result, better network performance is observed with the integration of DiffServ over MPLS. DiffServ over MPLS provide the capability of the microflow traffic for each classtype in an aggregated packet stream with a LSP. Traffic preemption and resource preemption are introduced in QoS over MPLS to demonstrate that the class of traffic can be classless if MPLS setup-priority and holding-priority are pre-determined at user defined level

Energy efficient core optical IP networks

The Internet has become an integral part of modern societies fuelling ever growing opportunities for the provision of new advanced services which better respond to quickly changing societal needs. Previously the deployment of such services have led to significant increases in energy consumption which is in strong contrast with the global drive for a greener and more energy efficient environments. Network infrastructures are required which support these growing needs but at the same time remain zero-carbon emission complaint. Green photonic network designs centre on techniques to reduce and conserve energy within multilayer network scenarios. In this Thesis, hibernation strategies are proposed where network configurations form selective group of nodes, segmentation of links and partitioning of the light paths within connections to enable "sleep" modes. The strategy is founded on the optimisation and improved power management through a control algorithm implemented as a modification of the Generalized Multi-Protocol Label Switching (GMPLS) signalling and routing protocol. The impact of the strategy on network utilization, number of wavelengths, number of connection requests, number of nodes, network connectivity degree, and power ratio in IP routers has been evaluated on representative optical networks using a simulation framework established using OMNeT++. A trade-off is observed between energy consumption and network performance as a result of hibernation; evaluation of this methodology indicates potential reduction in energy power consumption from 30% up to 75% at the expense of reduced network performance.The Internet has become an integral part of modern societies fuelling ever growing opportunities for the provision of new advanced services which better respond to quickly changing societal needs. Previously the deployment of such services have led to significant increases in energy consumption which is in strong contrast with the global drive for a greener and more energy efficient environments. Network infrastructures are required which support these growing needs but at the same time remain zero-carbon emission complaint. Green photonic network designs centre on techniques to reduce and conserve energy within multilayer network scenarios. In this Thesis, hibernation strategies are proposed where network configurations form selective group of nodes, segmentation of links and partitioning of the light paths within connections to enable "sleep" modes. The strategy is founded on the optimisation and improved power management through a control algorithm implemented as a modification of the Generalized Multi-Protocol Label Switching (GMPLS) signalling and routing protocol. The impact of the strategy on network utilization, number of wavelengths, number of connection requests, number of nodes, network connectivity degree, and power ratio in IP routers has been evaluated on representative optical networks using a simulation framework established using OMNeT++. A trade-off is observed between energy consumption and network performance as a result of hibernation; evaluation of this methodology indicates potential reduction in energy power consumption from 30% up to 75% at the expense of reduced network performance

Increasing transmission efficiency with advanced processing

Not too long after its emergence, the Internet became an integral part of everyday lives of men in modern societies. It constantly fuels growing opportunities for new advanced services which can better respond to quickly changing society needs. Previously such services often led to increases in energy consumption which is today in a strong contrast with the global drive for a greener and energy more efficient environment. We need network infrastructures which will support these growing needs but at the same time will also stay zero-carbon emission complaint. Such requirements are more imperative today than were ever before. In optical IP networks the power consumption could be reduced via green photonics and concepts known as green networking [1]. In line with these concepts we proposed a novel energy savings approach based on so called “node hibernation” technique. This approach is designed to help reduce network power consumption and optimise its energy usage by taking advantage of a hibernation algorithm we have developed. Its implementation into the network management structure will save the energy, operating cost to network operators and will deliver reduced carbon footprint

Performance Analysis of Throughput and Queuing Delay for Multiple Optical Channels for Local Area Network

Abstract-The advances in Wavelength Division Multiplexing (WDM) technology have tremendously increased the bandwidth of a single fiber optic, for local and metropolitan area network (LAN and MAN). This paper presents and discusses a new network environment that is multiple optical channel, which coupled Ethernet with WDM to decrease the average queuing delay and increases the normalized throughput. The performances of three channels are evaluated with different network parameters using discrete event simulator called OMNeT++. In this paper it has been proved that RS BEB algorithms show the best throughput for three data rates. Moreover, in average queuing delay and RS BEB shows the lowest delay despite the others algorithms. It has been observed from this work that an increase in the number of nodes, the percentage of normalized throughput decreasing is less than 20% for every additional node in the network

GMPLS-enabled routing applied to energy photonic networks

This paper looks at GMPLS-enabled routing applied to energy photonic network

Towards green high capacity optical networks

The demand for fast, secure, energy efficient high capacity networks is growing. It is fuelled by transmission bandwidth needs which will support among other things the rapid penetration of multimedia applications empowering smart consumer electronics and E-businesses. All the above trigger unparallel needs for networking solutions which must offer not only high-speed low-cost "on demand" mobile connectivity but should be ecologically friendly and have low carbon footprint. The first answer to address the bandwidth needs was deployment of fibre optic technologies into transport networks. After this it became quickly obvious that the inferior electronic bandwidth (if compared to optical fiber) will further keep its upper hand on maximum implementable serial data rates. A new solution was found by introducing parallelism into data transport in the form of Wavelength Division Multiplexing (WDM) which has helped dramatically to improve aggregate throughput of optical networks. However with these advancements a new bottleneck has emerged at fibre endpoints where data routers must process the incoming and outgoing traffic. Here, even with the massive and power hungry electronic parallelism routers today (still relying upon bandwidth limiting electronics) do not offer needed processing speeds networks demands. In this paper we will discuss some novel unconventional approaches to address network scalability leading to energy savings via advance optical signal processing. We will also investigate energy savings based on advanced network management through nodes hibernation proposed for Optical IP networks. The hibernation reduces the network overall power consumption by forming virtual network reconfigurations through selective nodes groupings and by links segmentations and partitionings