Adaptive Beam Nulling in Multihop Ad Hoc Networks
Explore the performance of adaptive beam nulling in multihop ad hoc networks under jamming conditions. The study involves algorithms, evaluation of performance, and future work considerations for enhancing network resilience against jamming attacks.
Download Presentation
Please find below an Image/Link to download the presentation.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author. If you encounter any issues during the download, it is possible that the publisher has removed the file from their server.
You are allowed to download the files provided on this website for personal or commercial use, subject to the condition that they are used lawfully. All files are the property of their respective owners.
The content on the website is provided AS IS for your information and personal use only. It may not be sold, licensed, or shared on other websites without obtaining consent from the author.
E N D
Presentation Transcript
Performance of Adaptive Beam Nulling in Multihop Ad Hoc Networks Under Jamming Suman Bhunia, Vahid Behzadan, Paulo Alexandre Regis, Shamik Sengupta
Performance of Adaptive Beam Nulling in MultihopAd Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 2 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Multi hop ad hoc networks Ad hoc: Collection of nodes communicating with each other independent of a central infrastructure. Multihop: Data traverses through multiple nodes Applications include sensor networks, vehicular networks, emergency radio networks in disaster zones, tactical mobile networks, and UAV communications S Bhunia, V Behzadan, P Regis, S Sengupta 3 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Jamming based DoS attack Wireless medium is vulnerable to jamming based denial of service attack. Attacker emits jamming signal to create high interference Jamming a subset of nodes in multihop networks is sufficient for maximal disruption Disruption of omnidirectional radios completely disables the node S Bhunia, V Behzadan, P Regis, S Sengupta 4 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Adaptive Beamforming Spatial filtering of Tx/Rx Adjust the influence of signals received by different array element via controlling the weights of signal streams Adaptive Nulling Weights chosen to suppress signals arriving from certain directions Filtering sources of interference Direction of Arrival (DoA): Signal arrives at elements in different times Estimation of DoA based on time(phase) difference between elements S Bhunia, V Behzadan, P Regis, S Sengupta 5 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 6 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Advantage of ANA against jamming Before jamming Shortest path routing A B C D After jamming Omnidirectional E, B, C deactivated Avoid entire jammed region A F G H I D ANA Null jammer s direction A B E C D Nodes retain connectivity S Bhunia, V Behzadan, P Regis, S Sengupta 7 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Aims and Objectives Study adaptive beam nulling as a mitigation technique against jamming Mobile multihop ad hoc network Mobile jammer Develop distributed framework Nodes determine beamnull individually Dynamic control of beamnull direction and width based on jammer s mobility Investigate survivability of links and connectivity of network S Bhunia, V Behzadan, P Regis, S Sengupta 8 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 9 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Defense Against Jamming Channel Surfing Migrate to a channel upon detection of jamming Proactive frequency hopping Spatial Retreat Mobile nodes relocate themselves physically Mapping Jammed Region Multi-hop and intensely populated network Avoid jammed links Spread Spectrum low bandwidth data stream uses higher bandwidth channel Honeypot single channel honeypot based channel surfing has been proposed upon detection of attack, the network switches its channel S Bhunia, V Behzadan, P Regis, S Sengupta 10 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 11 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming System assumptions Mobile jammer Jamming signal is distinctly recognizable Nodes monitor DoA of jammer Nodes equipped with antenna arrays and beamforming controllers Ideal beamformers 0 gain for nulled regions Operation time for beamnulling is negligible DoA estimation and communication occur asynchronously Periodic sensing between communications Link failure between 2 nodes occurs when: 2 nodes fall into the jammed region One node falls within the beamnull of another Mac and upper layers not affected Jammed nodes assumed to be out of range S Bhunia, V Behzadan, P Regis, S Sengupta 12 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Methodology Nodes monitor DoA of jamming signal ( ) at every seconds according to their local coordinate system History of jammer s position is updated Null width is computed based on history of jammer s mobility Prediction of jammer s movement in the next seconds Null angle adjusted to include predicted trajectory of jammer during interval between sensing phases A buffer width takes the possibility of jammer changing direction into account S Bhunia, V Behzadan, P Regis, S Sengupta 13 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Wide vs. Narrow Nulling S Bhunia, V Behzadan, P Regis, S Sengupta 14 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Null angle calculation Borders computed based on DoA and predicted movement of attacker ? ??is the history of jammer s velocity ?is attacker s DoA estimation in ?? sensing phase ? ? ? 1 ?= ? ?? is an adaptive weight to incorporate the randomness in jammer s movement S Bhunia, V Behzadan, P Regis, S Sengupta 15 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 16 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming S Bhunia, V Behzadan, P Regis, S Sengupta 17 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 18 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Simulation Parameters S Bhunia, V Behzadan, P Regis, S Sengupta 19 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Simulation snapshot S Bhunia, V Behzadan, P Regis, S Sengupta 20 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Performance Metrics Connectivity is defined as the total number of connected pairs Average number of active links A link is the one hop communication between two neighbors Average number of islands Number of isolated groups of nodes For completely connected network, the number of island is 1 S Bhunia, V Behzadan, P Regis, S Sengupta 21 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Simulation with fixed S Bhunia, V Behzadan, P Regis, S Sengupta 22 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Jammer s trajectory models S Bhunia, V Behzadan, P Regis, S Sengupta 23 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Results for different trajectories S Bhunia, V Behzadan, P Regis, S Sengupta 24 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Simulation with varying number of Nodes S Bhunia, V Behzadan, P Regis, S Sengupta 25 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Simulation with varying error S Bhunia, V Behzadan, P Regis, S Sengupta 26 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Outline Introduction Motivation Some Related Work Proposed Model Algorithms Performance Evaluation Conclusion and Future Work S Bhunia, V Behzadan, P Regis, S Sengupta 27 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Conclusion and Future Work Investigated the performance of adaptive beam nulling in multihop ad hoc networks under attack from a moving jammer. Connectivity of various network topologies with different mobility patterns of the jammer are studied. Effects of varying inherent errors are observed. Results demonstrate a significant improvement in survivability of connectivity. Future work: Beam nulling in 3D space Sophisticated tracking mechanism Cross-layer optimization S Bhunia, V Behzadan, P Regis, S Sengupta 28 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Acknowledgement This research was supported by NSF CAREER grant CNS #1346600 and CAPES Brazil #13184/13-0. S Bhunia, V Behzadan, P Regis, S Sengupta 29 CSS 2015
Performance of Adaptive Beam Nulling in Multihop Ad Hoc networks under Jamming Thank You! S Bhunia, V Behzadan, P Regis, S Sengupta CSS 2015 30
