RIVERBED-BASED NETWORK MODELING FOR MULTI-BEAM CONCURRENT TRANSMISSIONSijwmn
The paper presents a Riverbed simulator implementation with both routing and medium access control (MAC) protocols for mobile ad-hoc network wireless networks with multi-beam smart antennas (MBSAs). As one of the latest promising antenna techniques, MBSAs can achieve concurrent transmissions /
receptions in multiple directions/beams. Thus it can significantly improve the network throughput. However, so far there is still no accurate network simulator that can measure the MBSA-based
routing/MAC protocol performance. In this paper, we describe the simulation models with the implementation of MBSA antenna model in physical layer, MAC layer, and routing layer protocols, all in Riverbed Modeler. We will compare two routing scenarios, i.e., multi-hop diamond routing scenario and multi-path pipe routing. We will analyze the network performance for those two scenarios and illustrate the advantages of using MBSAs in wireless networks.
Ansaldo STS at CPExpo 2013: The role of satellite technologies and GALILEO fo...Leonardo
Ansaldo STS at CPExpo 2013: The role of satellite technologies and GALILEO for improving the safety of the local and regional train management infrastructures
RIVERBED-BASED NETWORK MODELING FOR MULTI-BEAM CONCURRENT TRANSMISSIONSijwmn
The paper presents a Riverbed simulator implementation with both routing and medium access control (MAC) protocols for mobile ad-hoc network wireless networks with multi-beam smart antennas (MBSAs). As one of the latest promising antenna techniques, MBSAs can achieve concurrent transmissions /
receptions in multiple directions/beams. Thus it can significantly improve the network throughput. However, so far there is still no accurate network simulator that can measure the MBSA-based
routing/MAC protocol performance. In this paper, we describe the simulation models with the implementation of MBSA antenna model in physical layer, MAC layer, and routing layer protocols, all in Riverbed Modeler. We will compare two routing scenarios, i.e., multi-hop diamond routing scenario and multi-path pipe routing. We will analyze the network performance for those two scenarios and illustrate the advantages of using MBSAs in wireless networks.
Ansaldo STS at CPExpo 2013: The role of satellite technologies and GALILEO fo...Leonardo
Ansaldo STS at CPExpo 2013: The role of satellite technologies and GALILEO for improving the safety of the local and regional train management infrastructures
This presentation highlights the upgrading steps for improved traffic aggregation at the regional hub sites in order to optimize traffic backhauling to the network core.
In addition, a reliable, passive access solution to cellular mobile traffic for a Quality of Service (QoS) monitoring and billing has been proposed.
Optimally adaptive power saving protocols for ad hoc networks using the hyper...Nexgen Technology
Ecruitment Solutions (ECS) is one of the leading Delhi based Software Development & HR Consulting Firm, which is assessed at the level of ISO 9001:2008 standard. ECS offers an awesome project and product based solutions to many customers around the globe.
In addition, ECS has also widened its wings by the way consummating academic projects especially for the final year professional degree students in India. ECS consist of a technical team that has solved many IEEE papers and delivered world-class solutions .
Uncover the Technology behind Indian RailwaysNikita Khanna
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This presentation highlights the upgrading steps for improved traffic aggregation at the regional hub sites in order to optimize traffic backhauling to the network core.
In addition, a reliable, passive access solution to cellular mobile traffic for a Quality of Service (QoS) monitoring and billing has been proposed.
Optimally adaptive power saving protocols for ad hoc networks using the hyper...Nexgen Technology
Ecruitment Solutions (ECS) is one of the leading Delhi based Software Development & HR Consulting Firm, which is assessed at the level of ISO 9001:2008 standard. ECS offers an awesome project and product based solutions to many customers around the globe.
In addition, ECS has also widened its wings by the way consummating academic projects especially for the final year professional degree students in India. ECS consist of a technical team that has solved many IEEE papers and delivered world-class solutions .
Uncover the Technology behind Indian RailwaysNikita Khanna
Indian railways is the world’s fourth largest railway networks comprising of 7,172 stations, 65,436 km of route and track length of 1,15,000 kilometers.
Elastic hybrid MAC protocol for wireless sensor networks IJECEIAES
The future is moving towards offering multiples services based on the same technology. Then, billions of sensors will be needed to satisfy the diversity of these services. Such considerable amount of connected devices must insure efficient data transmission for diverse applications. Wireless sensor network (WSN) represents the most preferred technology for the majority of applications. Researches in medium access control (MAC) mechanism have been of significant impact to the application growth because the MAC layer plays a major role in resource allocation in WSNs. We propose to enhance a MAC protocol of WSN to overcome traffic changes constraints. To achieve focused goal, we use elastic hybrid MAC scheme. The main interest of the developed MAC protocol is to design a medium access scheme that respect different quality of services (QoS) parameters needed by various established traffic. Simulation results show good improvement in measured parameters compared to typical protocol.
IJERA (International journal of Engineering Research and Applications) is International online, ... peer reviewed journal. For more detail or submit your article, please visit www.ijera.com
International Journal of Engineering Research and Applications (IJERA) is an open access online peer reviewed international journal that publishes research and review articles in the fields of Computer Science, Neural Networks, Electrical Engineering, Software Engineering, Information Technology, Mechanical Engineering, Chemical Engineering, Plastic Engineering, Food Technology, Textile Engineering, Nano Technology & science, Power Electronics, Electronics & Communication Engineering, Computational mathematics, Image processing, Civil Engineering, Structural Engineering, Environmental Engineering, VLSI Testing & Low Power VLSI Design etc.
Improvement of crankshaft MAC protocol for wireless sensor networks: a simula...IJECEIAES
Due to the dramatic growth in the use of Wireless Sensor Network (WSN) applications ranging from environment and habitat monitoring to tracking and surveillance, network research in WSN protocols has been very active in the last decade. With battery-powered sensors operating in unattended environments, energy conservation becomes the key technique for improving WSN lifetimes. WSN Medium Access Control (MAC) protocols address energy awareness and reduced duty cycles. The focus of this study is to investigate, through simulation, the effect of variations in various factors that influence the performance results of WSNs. Using MiXiM framework with OMNeT++ simulator, this simulation study proposes modifications in Crankshaft MAC protocol in order to improve its performance. The impact of duration and number of slots, degree of connectivity among the nodes, mobility speed and mobility update interval and also, the impact of sending data packets without preambles are investigated. Based on the simulation results, an improved version of the Crankshaft protocol for WSN is suggested and a comparative study of the performances of the original and improved protocol is presented. The results clearly indicate the superiority of the improved protocol over its original version.
A Cross Layer Based Scalable Channel Slot Re-Utilization Technique for Wirele...csandit
Due to tremendous growth of the wireless based application services are increasing the demand
for wireless communication techniques that use bandwidth more effectively. Channel slot reutilization
in multi-radio wireless mesh networks is a very challenging problem. WMNs have
been adopted as back haul to connect various networks such as Wi-Fi (802.11), WI-MAX
(802.16e) etc. to the internet. The slot re-utilization technique proposed so far suffer due to high
collision due to improper channel slot usage approximation error. To overcome this here the
author propose the cross layer optimization technique by designing a device classification
based channel slot re-utilization routing strategy which considers the channel slot and node
information from various layers and use some of these parameters to approximate the risk
involve in channel slot re-utilization in order to improve the QoS of the network. The simulation
and analytical results show the effectiveness of our proposed approach in term of channel slot
re-utilization efficiency and thus helps in reducing latency for data transmission and reduce
channel slot collision.
A CROSS-LAYER BASED SCALABLE CHANNEL SLOT RE-UTILIZATION TECHNIQUE FOR WIRELE...cscpconf
Due to tremendous growth of the wireless based application services are increasing the demand for wireless communication techniques that use bandwidth more effectively. Channel slot reutilization in multi-radio wireless mesh networks is a very challenging problem. WMNs have been adopted as back haul to connect various networks such as Wi-Fi (802.11), WI-MAX (802.16e) etc. to the internet. The slot re-utilization technique proposed so far suffer due to high collision due to improper channel slot usage approximation error. To overcome this here the author propose the cross layer optimization technique by designing a device classification based channel slot re-utilization routing strategy which considers the channel slot and node information from various layers and use some of these parameters to approximate the risk involve in channel slot re-utilization in order to improve the QoS of the network. The simulation and analytical results show the effectiveness of our proposed approach in term of channel slot re-utilization efficiency and thus helps in reducing latency for data transmission and reduce
channel slot collision.
Channel Aware Mac Protocol for Maximizing Throughput and FairnessIJORCS
The proper channel utilization and the queue length aware routing protocol is a challenging task in MANET. To overcome this drawback we are extending the previous work by improving the MAC protocol to maximize the Throughput and Fairness. In this work we are estimating the channel condition and Contention for a channel aware packet scheduling and the queue length is also calculated for the routing protocol which is aware of the queue length. The channel is scheduled based on the channel condition and the routing is carried out by considering the queue length. This queue length will provide a measurement of traffic load at the mobile node itself. Depending upon this load the node with the lesser load will be selected for the routing; this will effectively balance the load and improve the throughput of the ad hoc network.
Vehicular adhoc network (VANET) adopts or resembles a similar structure of Mobile adhoc network (MANET). The communication in VANET are generally classified into following three categories such as Vehicle to Infrastructure (V2I), Vehicle to Vehicle (V2V) and Hybrid network which is a combination of V2V and V2I network. VANET using the IEEE 802.11p standard has great potential of achieving objectives of Smart intelligent transport system (SITS) for improving transport and road safety efficiency. As more and more services is been provided for V2V based VANET network. It is a challenging task to provide QoS to end user, due to wireless medium that has limited channel availability for transmission. To guarantee QoS and provide efficient network performance, a prioritized MAC need to be designed. Many priority based MAC has been designed in recent times to improve the quality of data delivery to end user. However these do not consider the impact of environment and presence of obstacle which affects the signal attenuation at the receiver end and affecting the QoS of channel availability. To address, this work present an obstacle based radio propagation model, obstacle based CEV (City, Expressway and Village) environmental model and a selective MAC to provide QoS for different services. The proposed model efficiency is evaluated in term of throughput achieved per channel, Collison and success packet transmission. To evaluate the adaptive performance of proposed AMACexperiment are conducted under CEV environment and are compared with existing MAC NCCMA. The outcome achieved shows that the proposed model is efficient in term of reducing Collison, improving packet transmission and throughput performance considering two types of services.
An Accurate Performance Analysis of Hybrid Efficient and Reliable MAC Protoco...IJECEIAES
Vehicular Ad Hoc Networks (VANETs) is a technology supporting two types of applications, safety and service applications with higher and lower priorities respectively. Thereby, Medium Access Control (MAC) protocol is designed to provide reliable and efficient data broadcasting based on prioritization. Different from the IEEE 1609.4 (legacy), HER-MAC protocol is a new multi-channel MAC proposed for VANETs, offering remarkable performance with regards to safety applications transmission. This paper focuses on the analysis of packet delivery ratio of the HER-MAC protocol under non-saturated conditions. 1-D and 2-D Markov chains have been developed for safety and non-safety applications respectively, to evaluate mathematically the performance of HER-MAC protocol. The presented work has taken into account the freezing of the backoff timer for both applications and the backoff stages along with short retry limit for non-safety applications in order to meet the IEEE 802.11p specifications. It highlights that taking these elements into consideration are important in modeling the system, to provide an accurate estimation of the channel access, and guarantees that no packet is served indefinitely. More precise results of the system packet delivery ratio have been yield. The probability of successful transmission and collisions were derived and used to compute the packet delivery ratio. The simulation results validate the analytical results of our models and indicate that the performance of our models outperformed the existing models in terms of the packet delivery ratio under different number of vehicles and contention window.
Recent many works have concentrated on
dynamically turning on/off some base stations (BSs) in order to
improve energy efficiency in radio access networks (RANs). In
this survey, we broaden the research over BS switching
operations, which should competition up with traffic load
variations. The proposed method formulate the traffic variations
as a Markov decision process which should differ from dynamic
traffic loads which are still quite challenging to precisely forecast.
A reinforcement learning framework based BS switching
operation scheme was designed in order to minimize the energy
consumption of RANs. Furthermore a transfer actor-critic
algorithm (TACT) is used to speed up the ongoing learning
process, which utilizes the transferred learning expertise in
historical periods or neighboring regions. The proposed TACT
algorithm performs jumpstart and validates the feasibility of
significant energy efficiency increment.
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Energy efficient wireless mac protocolsfor railway monitoring applications
1. ENERGY-EFFICIENT WIRELESS MAC PROTOCOLSFOR
RAILWAY MONITORING APPLICATIONS
ABSTRACT
Recent advances in wireless sensor networking (WSN) techniques have encouraged
interest in the development of vehicle health monitoring (VHM) systems. These have the
potential for use in the monitoring of railway signalingsystems and rail tracks. Energy
efficiency is one of the most important design factors for the WSNs as the typical sensor
nodes are equipped with limited power batteries. In earlier research, an energy-efficient
cluster-based adaptive time-division multiple access(TDMA) medium-access-control (MAC)
protocol, namedEA-TDMA, has been developed by the authors for the purpose of
communication between the sensors placed in a railway wagon.
This paper proposes another new protocol, named E-BMA, which achieves even
better energy efficiency for low and medium traffic by minimizing the idle time during the
contention period. In addition to railway applications, the EA-TDMA and E-BMA protocols
are suitable for generic wireless data communication purposes. Both analytical and
simulation results for the energy consumption of TDMA, EA-TDMA, BMA, and E-BMA
have been presented in this paper to demonstrate the superiority of the EA-TDMA andEBMA protocols.
EXISTING SYSTEM:
With the increased demand for railway services, railway monitoring systems continue
to advance at a remarkable pace to maintain reliable, safe, and secure operation. The lack of
2. safety and security monitoring of railway infrastructure runs the risk of train collision, train
derailment, terrorist threats, and failures in the train wagons, etc.
The performance of rail vehicles running on tracks is limited by the lateral instability
inherent to thedesign of the wagon’s steering and the response of the railway wagon to
individual or combined track irregularities. Railway track irregularities need to be kept within
safe operating marginsby undertaking appropriate maintenance programs. Track geometry
inspection and monitoring enhances train-operating safety and reduced vehicle and track
dynamic interaction.
PROPOSED SYSTEM:
In this project, we are going to implementing and monitoring using 2-wireless sensor
network. And we can also use 3-wireless sensor network, using dotnet application and
TCP/IP protocol to implementation and monitoring in railway application.
The potential of WSN technology to monitor the railwaywagonhealth condition and
the vertical displacement of railwaywagons due to track irregularities has yet to be fully
explored.The limited lifetime of the batteries that power the sensor nodesmakes the energy
efficiency a major design issue for WSNs. This paper concentrates on developing an energyefficientWSN MAC protocol to collect data from sensor nodes that are placed inside the
railway wagons and send the data tothe locomotive for further precautionary actions to
prevent anyfuture disastrous events. Although theproposed energy-efficient protocol is
designed with the railwayapplications in mind, it is applicable to generic wireless
datacommunication purposes.
HARDWARE REQURIMENT:
1. ARM microcontroller
2. ZIGBEE
3. PC
SOFTWARE REQURIMENT:
1. Keil IDE
2. Visual studio
3. Flash magic
