The Experts below are selected from a list of 2082 Experts worldwide ranked by ideXlab platform
Giorgio Buttazzo - One of the best experts on this subject based on the ideXlab platform.
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Integrated Wireless Communication Protocol for Ad-Hoc Mobile Networks
2020Co-Authors: Tullio Facchinetti, Giorgio ButtazzoAbstract:Wireless ad-hoc networks have recently emerged as a relevant research topic. The management of ad hoc networks raises many interesting problems, and adding the mobility to the network’s components increases the number of these challenges. The approaches to the real-time Communication among the network’s units should guarantee robustness, flexibility and scalability, while meeting the timing constraints on real-time messages. Our goal is to build an integrated Communication framework suitable for ad-hocnetworks of mobile units. The main features to achieve are: robustness, scalability, and dynamic configurability. In this paper we outline the main challenges to be solved and we propose our solutions. They are based on a set of integrated Protocols focused on the management of the Communication and the self-organization of the network. The main topics covered in the work are: the MAC Protocol with real-time features, the cellular approach, the resource reservation, the management of the network topology and power-aware issues.
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ETFA - WBuST: A real-time energy-aware MAC layer Protocol for Wireless embedded systems
Proceedings of 2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation (ETFA 2012), 2012Co-Authors: Gianluca Franchino, Giorgio ButtazzoAbstract:The design of Wireless embedded systems for realtime applications requires a careful management of timing and energy requirements. This paper describes a Wireless Communication Protocol that can guarantee both message deadlines and system lifetime by properly allocating the network bandwidth to each node. The Protocol allows multi-hop Wireless Communication under different network topologies. The proposed approach is validated through both theoretical and experimental results.
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WBuST: A real-time energy-aware MAC layer Protocol for Wireless embedded systems
Proceedings of 2012 IEEE 17th International Conference on Emerging Technologies & Factory Automation (ETFA 2012), 2012Co-Authors: Gianluca Franchino, Giorgio ButtazzoAbstract:The design of Wireless embedded systems for realtime applications requires a careful management of timing and energy requirements. This paper describes a Wireless Communication Protocol that can guarantee both message deadlines and system lifetime by properly allocating the network bandwidth to each node. The Protocol allows multi-hop Wireless Communication under different network topologies. The proposed approach is validated through both theoretical and experimental results.
L. Shalini - One of the best experts on this subject based on the ideXlab platform.
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ARTCom - V2V Wireless Communication Protocol for Rear-end Collision Avoidance on Highways with Stringent Propagation Delay
2009 International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, A. Bagubali, L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. V2V Wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent delay constraints so as to provide drivers with requisite available manoeuvre time (AMT) to avoid rear-end collision. This V2V Wireless Communication Protocol provides a realistic simulation in Ns-2 for various topologies (lane-1& lane-3) and the performances were evaluated for different parameters such as EWM delay, delay due to overhead packets and probability of successful delivery of the emergency warning message (EWM).
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V2V Wireless Communication Protocol for rear-end collision avoidance on highways with stringent propagation delay
ARTCom 2009 - International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, A. Bagubali, L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, which provides an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. In this work, we propose and study the impact of a 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent (low) delay constraints so as to provide drivers with requisite available maneuver time (AMT) to avoid rear-end collision. We provide realistic simulation studies of Protocol performance within ns-2 environment for various topology (1 lane and 3 lanes) and background traffic scenarios, as well as different Protocol parameter settings, to highlight the potential of this approach for effective collision avoidance or mitigation.
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V2V Wireless Communication Protocol for Rear-end Collision Avoidance on Highways with Stringent Propagation Delay
2009 International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, Bagubali A., L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. V2V Wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent delay constraints so as to provide drivers with requisite available manoeuvre time (AMT) to avoid rear-end collision. This V2V Wireless Communication Protocol provides a realistic simulation in Ns-2 for various topologies (lane-1& lane-3) and the performances were evaluated for different parameters such as EWM delay, delay due to overhead packets and probability of successful delivery of the emergency warning message (EWM).
Karakkattu Vijayan Kavitha - One of the best experts on this subject based on the ideXlab platform.
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ARTCom - V2V Wireless Communication Protocol for Rear-end Collision Avoidance on Highways with Stringent Propagation Delay
2009 International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, A. Bagubali, L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. V2V Wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent delay constraints so as to provide drivers with requisite available manoeuvre time (AMT) to avoid rear-end collision. This V2V Wireless Communication Protocol provides a realistic simulation in Ns-2 for various topologies (lane-1& lane-3) and the performances were evaluated for different parameters such as EWM delay, delay due to overhead packets and probability of successful delivery of the emergency warning message (EWM).
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V2V Wireless Communication Protocol for rear-end collision avoidance on highways with stringent propagation delay
ARTCom 2009 - International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, A. Bagubali, L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, which provides an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. In this work, we propose and study the impact of a 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent (low) delay constraints so as to provide drivers with requisite available maneuver time (AMT) to avoid rear-end collision. We provide realistic simulation studies of Protocol performance within ns-2 environment for various topology (1 lane and 3 lanes) and background traffic scenarios, as well as different Protocol parameter settings, to highlight the potential of this approach for effective collision avoidance or mitigation.
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V2V Wireless Communication Protocol for Rear-end Collision Avoidance on Highways with Stringent Propagation Delay
2009 International Conference on Advances in Recent Technologies in Communication and Computing, 2009Co-Authors: Karakkattu Vijayan Kavitha, Bagubali A., L. ShaliniAbstract:More than 23% of annual vehicle accidents are rear-end collisions, this gives an important test-case for enhanced collision avoidance approaches based on v2v Wireless Communications. V2V Wireless network concern with the impact of a IEEE 802.11 based multi-hop MAC Protocol that propagates an emergency warning message (EWM) down a platoon of cars on a highway. The design objective is to ensure reception of this message with stringent delay constraints so as to provide drivers with requisite available manoeuvre time (AMT) to avoid rear-end collision. This V2V Wireless Communication Protocol provides a realistic simulation in Ns-2 for various topologies (lane-1& lane-3) and the performances were evaluated for different parameters such as EWM delay, delay due to overhead packets and probability of successful delivery of the emergency warning message (EWM).
L.s. Lopes - One of the best experts on this subject based on the ideXlab platform.
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ICAR - A real-time distributed software infrastructure for cooperating mobile autonomous robots
2009Co-Authors: F. Santos, L. Almeida, Paulo Pedreiras, L.s. LopesAbstract:Cooperating mobile autonomous robots have been generating a growing interest in fields such as rescue, demining and security. These applications require a real time middleware and Wireless Communication Protocol that can effecient and timely support the fusion of the distributed perception and the development of coordinated behaviors. This paper proposes an affordable middleware, based on low-cost and open-source COTS technologies, which relies on a real-time database partially replicated in all team members, containing both local and remote state variables, in a distributed shared memory style. This provides seamless access to the complete team state, with fast non-blocking local operations. The remote data is updated autonomously in the background by a WiFi-based Wireless Communication Protocol, at an adequate refresh rate. The software infrastruture is complemented with a task manager that provides scheduling and synchronization services to the application processes on top of the Linux operating system. Such infrastructure has been successfully used for four years in one RoboCup middle-size soccer team, and it has proved to be dependable in the presence of uncontrolled spurious traffic in the Communication channel, using an adaptive technique to synchronizating the robots in the team and reconfiguring the Communications dynamically and automatically according to the number of currently active team members.
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A real-time distributed software infrastructure for cooperating mobile autonomous robots
Icar: 2009 14th International Conference on Advanced Robotics Vols 1 and 2, 2009Co-Authors: F. Santos, L. Almeida, Paulo Pedreiras, L.s. LopesAbstract:Cooperating mobile autonomous robots have been generating a growing interest in fields such as rescue, demining and security. These applications require a real time middleware and Wireless Communication Protocol that can effecient and timely support the fusion of the distributed perception and the development of coordinated behaviors. This paper proposes an affordable middleware, based on low-cost and open-source COTS technologies, which relies on a real-time database partially replicated in all team members, containing both local and remote state variables, in a distributed shared memory style. This provides seamless access to the complete team state, with fast non-blocking local operations. The remote data is updated autonomously in the background by a WiFi-based Wireless Communication Protocol, at an adequate refresh rate. The software infrastruture is complemented with a task manager that provides scheduling and synchronization services to the application processes on top of the Linux operating system. Such infrastructure has been successfully used for four years in one RoboCup middle-size soccer team, and it has proved to be dependable in the presence of uncontrolled spurious traffic in the Communication channel, using an adaptive technique to synchronizating the robots in the team and reconfiguring the Communications dynamically and automatically according, to the number of currently active team members.
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Self-configuration of an adaptive TDMA Wireless Communication Protocol for teams of mobile robots
2008 IEEE International Conference on Emerging Technologies and Factory Automation, 2008Co-Authors: F. Santos, L. Almeida, L.s. LopesAbstract:Interest on using mobile autonomous agents has been growing, recently, due to their capacity to cooperate for diverse purposes, from rescue to demining and security. However, such cooperation requires the exchange of state data that is time sensitive while achieving timeliness with RF Communication is intrinsically difficult due to the openess of the medium. This paper describes a Communication layer that improves the timeliness of periodic data exchanges among the team reducing the chances of lost packets caused by collisions between team members. In particular, the paper extends a previous proposal for an adaptive TDMA Protocol with new self-configuration capabilities according to the current number of active team members. This feature further reduces the likelyhood of collisions within the team. Several experimental results with an actual system implementation show the effectiveness of the proposed solution.
O. K. Ikejiani - One of the best experts on this subject based on the ideXlab platform.
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WOWMOM - An efficient Wireless Communication Protocol for secured transmission of content-sensitive multimedia data
2009 IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks & Workshops, 2009Co-Authors: Janet Light, O. K. IkejianiAbstract:Availability of content-sensitive multimedia data by Wireless, anytime anywhere poses many challenges. These systems have to cope up with the security, connectivity, packet loss, signal-strength and channel issues of a Wireless connection without compromising the privacy and trust issues of the sensitive data. In this paper a Wireless Communication Protocol is presented which manages end-to-end transmission of content-sensitive multimedia data using a TCP/IP connection. The system proposed here introduces additional security mechanism to existing SSL using echo-tunneling, data segregation and separate Communication scheme for privacy and security safeguards. XML minimization is introduced to improve the speed of delivery.
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An efficient Wireless Communication Protocol for secured transmission of content-sensitive multimedia data
2009 IEEE International Symposium on a World of Wireless Mobile and Multimedia Networks and Workshops WOWMOM 2009, 2009Co-Authors: Janet Light, O. K. IkejianiAbstract:Availability of content-sensitive multimedia data by Wireless, anytime anywhere poses many challenges. These systems have to cope up with the security, connectivity, packet loss, signal-strength and channel issues of a Wireless connection without compromising the privacy and trust issues of the sensitive data. In this paper a Wireless Communication Protocol is presented which manages end-to-end transmission of content-sensitive multimedia data using a TCP/IP connection. The system proposed here introduces additional security mechanism to existing SSL using echo-tunneling, data segregation and separate Communication scheme for privacy and security safeguards. XML minimization is introduced to improve the speed of delivery.
