Wireless Channel Characterisation over Simulations for an Indoors Environment at 2.4 GHz

Akhtar, Tafseer; Politis, Ilias; Kotsopoulos, Stavros

doi:10.1007/978-3-030-05195-2_38

Cited by 5 publications

(5 citation statements)

References 11 publications

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“…We chose as possible models Log Distance Path Loss (LDPL) and Log Normal Shadowing (LNS), both with exp = 2. As presented in [2], these two models are suited to simulate a connection in free space and urban area. Furthermore, we test with two different WiFi versions (i.e., IEEE 802.11g and IEEE 802.11ac).…”

Section: Discussionmentioning

confidence: 99%

EVExchange: A Relay Attack on Electric Vehicle Charging System

Conti¹,

Denis²,

Poovendran³

et al. 2022

Preprint

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To support the increasing spread of Electric Vehicles (EVs), Charging Stations (CSs) are being installed worldwide. The new generation of CSs employs the Vehicle-To-Grid (V2G) paradigm by implementing novel standards such as the ISO 15118. This standard enables highlevel communication between the vehicle and the charging column, helps manage the charge smartly, and simplifies the payment phase. This novel charging paradigm, which connects the Smart Grid to external networks (e.g., EVs and CSs), has not been thoroughly examined yet. Therefore, it may lead to dangerous vulnerability surfaces and new research challenges.In this paper, we present EVExchange, the first attack to steal energy during a charging session in a V2G communication: i.e., charging the attacker's car while letting the victim pay for it. Furthermore, if reverse charging flow is enabled, the attacker can even sell the energy available on the victim's car! Thus, getting the economic profit of this selling, and leaving the victim with a completely discharged battery. We developed a virtual and a physical testbed in which we validate the attack and prove its effectiveness in stealing the energy. To prevent the attack, we propose a lightweight modification of the ISO 15118 protocol to include a distance bounding algorithm. Finally, we validated the countermeasure on our testbeds. Our results show that the proposed countermeasure can identify all the relay attack attempts while being transparent to the user.

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Section: Discussionmentioning

confidence: 99%

EVExchange: A Relay Attack on Electric Vehicle Charging System

Conti¹,

Denis²,

Poovendran³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…There are numerous theoretical and experimental studies of indoor propagation models [3][4][5][6][7][8]. Most of the models tend to focus more on small scale fading or inter-floor or loses as a result of obstacles like walls between transmitter and receiver.…”

Section: Indoor Propagation Modellingmentioning

confidence: 99%

“…Where represent the exponent value for the "same floor" [10]. For multiple floors the equation (4) becomes:…”

Section: Attenuation Factormentioning

confidence: 99%

“…In the scenarios the transmission power of the cell was fixed as against in [4] in which the cell power was being increased and the nodes were kept at constant position, it was only the position of one of the node that changes by moving away radially from the access point. This was done for the node at various points from the cell.…”

Section: Simulation Setupmentioning

confidence: 99%

“…There is also the need for large number of Micro and Pico cells for the improvement of the signal strength and quality in the indoor environment. This necessitated channel modelling particularly for indoors environment which offers opportunities for further investigation of the effects that environmental conditions (building architecture, construction materials and number of floors) can have of the channel characteristics [4].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Indoor Propagation Models at 2.4GHz for 5G Wireless Mobile Networks using SDN Simulator

Alhassan¹,

Abdulhameed²,

Ngala³

2020

Proceedings of the Proceedings of the 1st International Multi-Disciplinary Conference Theme: Sustainable Development and Smart

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In this paper, a comparison on performance of indoor radio propagation models for 5G wireless networks is presented. The 5G wireless networks will be marked with movement of large volume of data and support for newer applications that require much high bandwidth (IoT, Ultra-Reliable and low latency Communications, Industrial Automations, Robotics, Drones and Virtual Reality to mention just few). There is going to be serious challenge in meeting the RF signal coverage for indoor environments. Although there is no single RF propagation model that is suitable for all indoor environments, a number of popular indoor propagation models were compared using Mininet-Wifi Simulator at 2.4 GHz. ITU-T model is recommended because of its superior performance over the other three propagation models. The channel characteristics was analyzed based on Received Signal Strength Indicator (RSSI).

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EVExchange: A Relay Attack on Electric Vehicle Charging System

Conti

Denis

Poovendran

et al. 2022

Lecture Notes in Computer Science

View full text Add to dashboard Cite

To support the increasing spread of Electric Vehicles (EVs), Charging Stations (CSs) are being installed worldwide. The new generation of CSs employs the Vehicle-To-Grid (V2G) paradigm by implementing novel standards such as the ISO 15118. This standard enables high-level communication between the vehicle and the charging column, helps manage the charge smartly, and simplifies the payment phase. This novel charging paradigm, which connects the Smart Grid to external networks (e.g., EVs and CSs), has not been thoroughly examined yet. Therefore, it may lead to dangerous vulnerability surfaces and new research challenges.In this paper, we present EVExchange, the first attack to steal energy during a charging session in a V2G communication: i.e., charging the attacker’s car while letting the victim pay for it. Furthermore, if reverse charging flow is enabled, the attacker can even sell the energy available on the victim’s car! Thus, getting the economic profit of this selling, and leaving the victim with a completely discharged battery. We developed a virtual and a physical testbed in which we validate the attack and prove its effectiveness in stealing the energy. To prevent the attack, we propose a lightweight modification of the ISO 15118 protocol to include a distance bounding algorithm. Finally, we validated the countermeasure on our testbeds. Our results show that the proposed countermeasure can identify all the relay attack attempts while being transparent to the user.

show abstract

Wireless Channel Characterisation over Simulations for an Indoors Environment at 2.4 GHz

Cited by 5 publications

References 11 publications

EVExchange: A Relay Attack on Electric Vehicle Charging System

EVExchange: A Relay Attack on Electric Vehicle Charging System

Comparison of Indoor Propagation Models at 2.4GHz for 5G Wireless Mobile Networks using SDN Simulator

EVExchange: A Relay Attack on Electric Vehicle Charging System

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