IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88NS2 PROJECTS 2012 1. The Three-Tier Security Scheme in Wireless Sensor Networks with Mobile Sinks – projects 2012 ABSTRACT Mobile sinks (MSs) are vital in many wireless sensor network (WSN) applications for efficient data accumulation, localized sensor reprogramming, and for distinguishing and revoking compromised sensors. However, in sensor networks that make use of the existing key predistribution schemes for pairwise key establishment and authentication between sensor nodes and mobile sinks, the employment of mobile sinks for data collection elevates a new security challenge: in the basic probabilistic and q-composite key predistribution schemes, an attacker can easily obtain a large number of keys by capturing a small fraction of nodes, and hence, can gain control of the network by deploying a replicated mobile sink preloaded with some compromised keys. This article describes a three-tier general framework that permits the use of any pairwise key predistribution scheme as its basic component. The new framework requires two separate key pools, one for the mobile sink to access the network, and one for pairwise key establishment between the sensors. To further reduce the damages caused by stationary access node replication attacks, we have strengthened the authentication mechanism between the sensor and the stationary access node in the proposed framework. Through detailed analysis, we show that our security
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 framework has a higher network resilience to a mobile sink replication attack as compared to the polynomial pool-based scheme.2. TAM: A Tiered Authentication of Multicast Protocol for Ad-Hoc Networks – projects 2012 ABSTRACT: Ad-hoc networks are becoming an effective tool for many mission critical applications such as troop coordination in a combat field, situational awareness, etc. These applications are characterized by the hostile environment that they serve in and by the multicast-style of communication traffic. Therefore, authenticating the source and ensuring the integrity of the message traffic become a fundamental requirement for the operation and management of the network. However, the limited computation and communication resources, the large scale deployment and the unguaranteed connectivity to trusted authorities make known solutions for wired and single-hop wireless networks inappropriate. This paper presents a new Tiered Authentication scheme for Multicast traffic (TAM) for large scale dense ad-hoc networks. TAM combines the advantages of the time asymmetry and the secret information asymmetry paradigms and exploits network clustering to reduce overhead and ensure scalability. Multicast traffic within a cluster employs a one-way hash function chain in order to authenticate the message source. Cross-cluster multicast traffic includes message authentication codes (MACs) that are based on a set of keys. Each
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 cluster uses a unique subset of keys to look for its distinct combination of valid MACs in the message in order to authenticate the source. The simulation and analytical results demonstrate the performance advantage of TAM in terms of bandwidth overhead and delivery delay3. Design and Implementation of TARF: A Trust-Aware Routing Framework for WSNs- projects 2012 ABSTRACT: The multihop routing in wireless sensor networks (WSNs) offers little protection against identity deception through replaying routing information. An adversary can exploit this defect to launch various harmful or even devastating attacks against the routing protocols, including sinkhole attacks, wormhole attacks, and Sybil attacks. The situation is further aggravated by mobile and harsh network conditions. Traditional cryptographic techniques or efforts at developing trust- aware routing protocols do not effectively address this severe problem. To secure the WSNs against adversaries misdirecting the multihop routing, we have designed and implemented TARF, a robust trust-aware routing framework for dynamic WSNs. Without tight time synchronization or known geographic information, TARF provides trustworthy and energy-efficient route. Most importantly, TARF proves effective against those harmful attacks developed out of identity deception; the resilience of TARF is verified through extensive evaluation with both simulation and empirical experiments on large-scale WSNs
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 under various scenarios including mobile and RF-shielding network conditions. Further, we have implemented a low-overhead TARF module in TinyOS; as demonstrated, this implementation can be incorporated into existing routing protocols with the least effort. Based on TARF, we also demonstrated a proof-of- concept mobile target detection application that functions well against an antidetection mechanism.4. ZoneTrust: Fast Zone-Based Node Compromise Detection and Revocation in Wireless Sensor Networks Using Sequential Hypothesis Testing- projects 2012 ABSTRACT: Due to the unattended nature of wireless sensor networks, an adversary can physically capture and compromise sensor nodes and then mount a variety of attacks with the compromised nodes. To minimize the damage incurred by the compromised nodes, the system should detect and revoke them as soon as possible. To meet this need, researchers have recently proposed a variety of node compromise detection schemes in wireless ad hoc and sensor networks. For example, reputation-based trust management schemes identify malicious nodes but do not revoke them due to the risk of false positives. Similarly, software-attestation schemes detect the subverted software modules of compromised nodes. However, they require each sensor node to be attested periodically, thus incurring substantial overhead. To mitigate the limitations of the existing schemes, we propose a zone-based node compromise detection and revocation scheme in wireless sensor networks. The main idea behind our scheme is to use sequential hypothesis testing to detect suspect regions in which compromised nodes are likely placed. In these suspect regions, the network
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 operator performs software attestation against sensor nodes, leading to the detection and revocation of the compromised nodes. Through quantitative analysis and simulation experiments, we show that the proposed scheme detects the compromised nodes with a small number of samples while reducing false positive and negative rates, even if a substantial fraction of the nodes in the zone are compromised. Additionally, we model the detection problem using a game theoretic analysis, derive the optimal strategies for the attacker and the defender, and show that the attacker’s gain from node compromise is greatly limited by the defender when both the attacker and the defender follow their optimal strategies.5. Handling Selfishness in Replica Allocation over a Mobile Ad Hoc Network- Mobile Computing, projects 2012 ABSTRACT In a mobile ad hoc network, the mobility and resource constraints of mobile nodes may lead to network partitioning or performance degradation. Several data replication techniques have been proposed to minimize performance degradation. Most of them assume that all mobile nodes collaborate fully in terms of sharing their memory space. In reality, however, some nodes may selfishly decide only to cooperate partially, or not at all, with other nodes. These selfish nodes could then reduce the overall data accessibility in the network. In this paper, we examine the impact of selfish nodes in a mobile ad hoc network from the perspective of replica allocation. We term this selfish replica allocation. In particular, we develop a selfish node detection algorithm that considers partial selfishness and novel replica allocation techniques to properly cope with selfish
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 replica allocation. The conducted simulations demonstrate the proposed approach outperforms traditional cooperative replica allocation techniques in terms of data accessibility, communication cost, and average query delay. 6. Cut Detection in Wireless Sensor Networks – projects 2012ABSTRACT:A wireless sensor network can get separated into multiple connected components dueto the failure of some of its nodes, which is called a “cut.” In this paper, we consider theproblem of detecting cuts by the remaining nodes of a wireless sensor network. Wepropose an algorithm that allows 1) every node to detect when the connectivity to aspecially designated node has been lost, and 2) one or more nodes (that are connectedto the special node after the cut) to detect the occurrence of the cut. The algorithm isdistributed and asynchronous: every node needs to communicate with only those nodesthat are within its communication range. The algorithm is based on the iterativecomputation of a fictitious “electrical potential” of the nodes. The convergence rate ofthe underlying iterative scheme is independent of the size and structure of the network.We demonstrate the effectiveness of the proposed algorithm through simulations and areal hardware implementation.
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 7. fast Data Collection in Tree-Based Wireless Sensor Networks- Mobile Computing, projects 2012Abstract:Fast Data Collection in Tree-Based Wireless Sensor NetworksWe investigate the following fundamental question – how fast can information becollected from a wireless sensor network organized as tree? To address this, weexplore and evaluate a number of different techniques using realistic simulation modelsunder the many-to-one communication paradigm known as convergecast. We firstconsider time scheduling on a single frequency channel with the aim of minimizing thenumber of time slots required (schedule length) to complete a convergecast. Next, wecombine scheduling with transmission power control to mitigate the effects ofinterference, and show that while power control helps in reducing the schedule lengthunder a single frequency, scheduling transmissions using multiple frequencies is moreefficient. We give lower bounds on the schedule length when interference is completelyeliminated, and propose algorithms that achieve these bounds. We also evaluate theperformance of various channel assignment methods and find empirically that formoderate size networks of about 100 nodes, the use of multi-frequency scheduling cansuffice to eliminate most of the interference. Then, the data collection rate no longerremains limited by interference but by the topology of the routing tree. To this end, weconstruct degree-constrained spanning trees and capacitated minimal spanning trees,and show significant improvement in scheduling performance over different deploymentdensities. Lastly, we evaluate the impact of different interference and channel modelson the schedule length.
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 8. Hop-by-Hop Routing in Wireless Mesh Networks with Bandwidth Guarantees- Mobile Computing, projects 2012 Abstract: Wireless Mesh Network (WMN) has become an important edge network to provideInternet access to remote areas and wireless connections in a metropolitan scale. Inthis paper, we study the problem of identifying the maximum available bandwidth path,a fundamental issue in supporting quality-of-service in WMNs. Due to interferenceamong links, bandwidth, a well-known bottleneck metric in wired networks, is neitherconcave nor additive in wireless networks. We propose a new path weight whichcaptures the available path bandwidth information. We formally prove that our hop-by-hop routing protocol based on the new path weight satisfies the consistency and loop-freeness requirements. The consistency property guarantees that each node makes aproper packet forwarding decision, so that a data packet does traverse over theintended path. Our extensive simulation experiments also show that our proposed pathweight outperforms existing path metrics in identifying high-throughput paths.Wireless Mesh Network (WMN) has become an important edge network to provideInternet access to remote areas and wireless connections in a metropolitan scale. Inthis paper, we study the problem of identifying the maximum available bandwidth path,a fundamental issue in supporting quality-of-service in WMNs. Due to interferenceamong links, bandwidth, a well-known bottleneck metric in wired networks, is neitherconcave nor additive in wireless networks. We propose a new path weight whichcaptures the available path bandwidth information. We formally prove that our hop-by-hop routing protocol based on the new path weight satisfies the consistency and loop-freeness requirements. The consistency property guarantees that each node makes a
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88proper packet forwarding decision, so that a data packet does traverse over theintended path. Our extensive simulation experiments also show that our proposed pathweight outperforms existing path metrics in identifying high-throughput paths. 9. Toward Reliable Data Delivery for Highly Dynamic Mobile Ad Hoc Networks- Mobile Computing, projects 2012 Abstract:Toward Reliable Data Delivery for Highly Dynamic Mobile Ad Hoc NetworksThis paper addresses the problem of delivering data packets for highly dynamic mobilead hoc networks in a reliable and timely manner. Most existing ad hoc routing protocolsare susceptible to node mobility, especially for large-scale networks. Driven by thisissue, we propose an efficient Position-based Opportunistic Routing (POR) protocolwhich takes advantage of the stateless property of geographic routing and thebroadcast nature of wireless medium. When a data packet is sent out, some of theneighbor nodes that have overheard the transmission will serve as forwardingcandidates, and take turn to forward the packet if it is not relayed by the specific bestforwarder within a certain period of time. By utilizing such in-the-air backup,communication is maintained without being interrupted. The additional latency incurredby local route recovery is greatly reduced and the duplicate relaying caused by packetreroute is also decreased. In the case of communication hole, a Virtual Destination-based Void Handling (VDVH) scheme is further proposed to work together with POR.Both theoretical analysis and simulation results show that POR achieves excellent
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88performance even under high node mobility with acceptable overhead and the new voidhandling scheme also works well 10. Minimizing Delay And Maximizing Lifetime For Wireless Sensor Networks With Any CastABSTRACT:In this paper, we are interested in minimizing the delay and maximizing the lifetime ofevent-driven wireless sensor networks for which events occur infrequently. In suchsystems, most of the energy is consumed when the radios are on, waiting for a packetto arrive. Sleep-wake scheduling is an effective mechanism to prolong the lifetime ofthese energy-constrained wireless sensor networks. However, sleep-wake schedulingcould result in substantial delays because a transmitting node needs to wait for its next-hop relay node to wake up. An interesting line of work attempts to reduce these delaysby developing Ã‚Â¿anycastÃ‚Â¿-based packet forwarding schemes, where each nodeopportunistically forwards a packet to the first neighboring node that wakes up amongmultiple candidate nodes. In this paper, we first study how to optimize the anycastforwarding schemes for minimizing the expected packet-delivery delays from the sensornodes to the sink. Based on this result, we then provide a solution to the joint controlproblem of how to optimally control the system parameters of the sleep-wakescheduling protocol and the anycast packet-forwarding protocol to maximize thenetwork lifetime, subject to a constraint on the expected end-to-end packet-deliverydelay. Our numerical results indicate that the proposed solution can outperform priorheuristic solutions in the literature, especially under practical scenarios where there areobstructions, e.g., a lake or a mountain, in the coverage area of the wireless sensornetwork.
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 11. Optimize Storage Placement In Sensor NetworksABSTRACT:Data storage has become an important issue in sensor networks as a large amount of collected data need to be archived for future information retrieval. Storage nodes are introduced in this paper to store the data collected from the sensors in their proximities. The storage nodes alleviate the heavy load of transmitting all data to a central place for archiving and reduce the communication cost induced by the network query. The objective of this paper is to address the storage node placement problem aiming to minimize the total energy cost for gathering data to the storage nodes and replying queries. We examine deterministic placement of storage nodes and present optimal algorithms based on dynamic programming. Further, we give stochastic analysis for random deployment and conduct simulation evaluation for both deterministic and random placements of storage nodes. 12. Secure Data Collection In Wireless Sensor Networks Using Randomized Dispersive Routes
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 Compromised-node and denial-of-service are two key attacks in wireless sensor networks (WSNs). In this paper, we study routing mechanisms that circumvent (bypass) black holes formed by these attacks. We argue that existing multi-path routing approaches are vulnerable to such attacks, mainly due to their deterministic nature. So once an adversary acquires the routing algorithm, it can compute the same routes known to the source, and hence endanger all information sent over these routes. In this paper, we develop mechanisms that generate randomized multipath routes. Under our design, the routes taken by the â€œsharesâ€ of different packets change over time. So even if the routing algorithm becomes known to the adversary, the adversary still cannot pinpoint the routes traversed by each packet. Besides randomness, the routes generated by our mechanisms are also highly dispersive and energy-efficient, making them quite capable of bypassing black holes at low energy cost. Extensive simulations are conducted to verify the validity of our mechanisms.13. Performance Modeling of Message Dissemination In Vehicular Ad Hoc Networks with PriorityABSTRACT:In this paper, we present an analytical study for the performance of messagedissemination in vehicular ad hoc networks (VANETs) with two priority classes. Itis assumed that the message traffic generated by event-driven safetyapplications has higher priority compared to the remaining network traffic. First,we derive the distribution of the number of concurrent transmissions of lowerpriority messages in the system at the steady state, through a birth-deathprocess analysis. The distribution has a simple product form solution. We alsoderive the percentage of destination node population which cannot receive themessage error free due to interference. Subsequently, we determine the
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 average forwarding distance and the number of nodes which receive a high- priority message in the presence of low-priority traffic. Numerical results are provided along with simulation results that confirm the accuracy of the proposed analysis. The distribution of the number of concurrent transmissions is shown to have a bell-shape curve. Results also show that larger transmission ranges do not necessarily improve the per hop safety-message forwarding distance as more nodes may be exposed to interference, especially in networks with higher node densities. 14. An Attribute-Based Access Control System for Emergency Services over Vehicular Ad Hoc NetworksABSTRACTIn this paper, we propose an Attribute-Based Access Control System (ABACS) foremergency services with security assurance over Vehicular Ad Hoc Networks(VANETs). ABACS aims to improve the efficiency of rescues mobilized viaemergency communications over VANETs. By adopting fuzzy identity-basedencryption, ABACS can select the emergency vehicles that can most appropriatelydeal with an emergency and securely delegate the authority to control trafficfacilities to the assigned emergency vehicles. Using novel cryptographicpreliminaries, ABACS realizes confidentiality of messages, prevention of collusionattacks, and fine-grained access control. As compared to the current PKI scheme,the computational delay and transmission overhead can be reduced by exploitingthe advantages afforded by message broadcasting, which is heavily used in ABACS.The performance evaluation demonstrates that ABACS is a suitable candidate forrealizing emergency services via VANETs.
IEEE 2012 NS2 Titles & Abstract FOR REGISTER: www.finalyearstudentsproject.com CONTACT NO.: 91-9176696486. Address: No.73, karuneegar street, Adambakkam, Chennai-88 15. Delaying Transmissions in Data Communication Networks to Improve Transport-Layer PerformanceABSTRACTPacket losses in the network have a considerable performance impact on transport-layer throughput. For reliabledata transfer, lost packets require retransmissions andthus cause very long delays. This tail of the packet delaydistributioncauses performance problems. There are several approaches to tradingoff networking resources up-front to reduce long delays for some packets (e.g., forwarderror correction, network coding). We propose packet pacing as an alternative thatchanges traffic characteristics favorably by addingintentional delay inpacket transmissions. This intentional delay counters the principle ofbest effort but can reduce the burstiness of traffic and improve overall network operation- in particular in network with small packet buffers. As a result,pacing improves transport-layer performance, providing a tradeoff example where smallamounts of additionaldelay can significantly increase connection bandwidth. We presenta Queue Length Based Pacing (QLBP) algorithm that paces network traffic using asingle queue and that can be implemented with small computational and memoryoverhead. We present a detailed analysis on delay bounds and the quantitative impactof QLBP pacing on network traffic. Through simulation, we show how the proposedpacing technique can improveconnection throughput in small-buffer networks.