The Experts below are selected from a list of 3624 Experts worldwide ranked by ideXlab platform
John Mceachen - One of the best experts on this subject based on the ideXlab platform.
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gsm to umts network handover vulnerability testing using software defined radio
Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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HICSS - GSM to UMTS Network Handover Vulnerability Testing Using Software-Defined Radio
2015 48th Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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ACSCC - State based single Channel selection in multi-Channel wireless networks
2011 Conference Record of the Forty Fifth Asilomar Conference on Signals Systems and Computers (ASILOMAR), 2011Co-Authors: Brian Phillips, Murali Tummala, John MceachenAbstract:We present a scheme for identifying and selecting high performing Channels in a multi-Channel wireless network through the application of a state based approach. The proposed scheme can increase throughput and reduce delay; however a significant challenge is node coordination. In Dedicated Control Channel schemes, data Channels are selected based upon Channel agreement between nodes. One widely implemented Channel selection scheme is random selection which can lead to suboptimal network performance when one or more data Channels are disadvantaged. Our proposed Channel selection scheme is shown to overcome the inefficiency of random selection. We develop a theoretical performance model of our state based selection scheme and compare it against random selection. We then present simulation results to demonstrate a significant reduction in transmission errors by state based over random selection.
Carson Mcabee - One of the best experts on this subject based on the ideXlab platform.
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gsm to umts network handover vulnerability testing using software defined radio
Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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HICSS - GSM to UMTS Network Handover Vulnerability Testing Using Software-Defined Radio
2015 48th Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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Software-defined radio global system for mobile communications transmitter development for heterogeneous network vulnerability testing
2013Co-Authors: Carson McabeeAbstract:Abstract : The conversion from homogeneous global system for mobile communications (GSM) networks to heterogeneous GSM/universal mobile telecommunications system (UMTS) networks is rapidly expanding. Previous research identified vulnerabilities in the GSM network that were fixed in the UMTS standard; however, the mobile device must successfully access the UMTS network to take advantage of security improvements. Therefore, a possible vulnerability not addressed in either the GSM or UMTS standards is the potential for a malicious entity to prevent a mobile device from handing over from a GSM to UMTS network, because the GSM network maintains the standalone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. In this thesis, we present an open-source coding scheme that utilizes parts of the OpenBTS source code to transmit a GSM handoverfailure message using the universal software radio peripheral. The method is validated through the collection of the GSM transmitter messages by Airprobe s GSM-receiver software.
Murali Tummala - One of the best experts on this subject based on the ideXlab platform.
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gsm to umts network handover vulnerability testing using software defined radio
Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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HICSS - GSM to UMTS Network Handover Vulnerability Testing Using Software-Defined Radio
2015 48th Hawaii International Conference on System Sciences, 2015Co-Authors: Carson Mcabee, Murali Tummala, John MceachenAbstract:This paper examines a possible vulnerability with the potential for a malicious entity to prevent a mobile device from handing over from a global system for mobile communications (GSM) to universal mobile telecommunications system (UMTS) network because the GSM network maintains the stand-alone Dedicated Control Channel (SDCCH) uplink time slots. The process of testing this vulnerability requires the development of a device that monitors a GSM base transceiver station, identifies when a handover to UMTS message is sent, tracks the time slots of the SDCCH uplink, and transmits a GSM handover-failure message. We present a scheme that utilizes parts of the Open BTS to transmit a GSM handover-failure message using a software defined radio. The method is validated through the collection of the GSM transmitter messages by Air probe's GSM-receiver module.
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ACSCC - State based single Channel selection in multi-Channel wireless networks
2011 Conference Record of the Forty Fifth Asilomar Conference on Signals Systems and Computers (ASILOMAR), 2011Co-Authors: Brian Phillips, Murali Tummala, John MceachenAbstract:We present a scheme for identifying and selecting high performing Channels in a multi-Channel wireless network through the application of a state based approach. The proposed scheme can increase throughput and reduce delay; however a significant challenge is node coordination. In Dedicated Control Channel schemes, data Channels are selected based upon Channel agreement between nodes. One widely implemented Channel selection scheme is random selection which can lead to suboptimal network performance when one or more data Channels are disadvantaged. Our proposed Channel selection scheme is shown to overcome the inefficiency of random selection. We develop a theoretical performance model of our state based selection scheme and compare it against random selection. We then present simulation results to demonstrate a significant reduction in transmission errors by state based over random selection.
A K Gupta - One of the best experts on this subject based on the ideXlab platform.
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primary Channel assignment based mac pcam a multi Channel mac protocol for multi hop wireless networks
Wireless Communications and Networking Conference, 2004Co-Authors: J S Pathmasuntharam, A K GuptaAbstract:Some wireless MAC protocols such as IEEE 802.11 were not designed to capitalize on the available multiple Channels in an efficient manner. In this paper, we propose a novel multi-Channel medium access Control protocol for wireless networks which we term us "primary Channel assignment based MAC". The protocol is based on the use of primary Channel assignment, which is used by other nodes to find the corresponding node. We also introduce a method to reduce the hidden terminal problem encountered in multi-Channel designs by proposing a modified transmission range threshold. The scheme eliminates the need for a separate Dedicated Control Channel or time slot that is usually prone to saturation when the traffic increases. The proposed scheme also addresses the broadcast messages problem in multi-Channel design. The scheme is based on IEEE 802.11 DCF protocol. The performance of the proposed protocol is compared to two other multi-Channel schemes. In an ad-hoc network, the protocol outperforms the other protocols by up to 140%.
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WCNC - Primary Channel assignment based MAC (PCAM) - a multi-Channel MAC protocol for multi-hop wireless networks
2004 IEEE Wireless Communications and Networking Conference (IEEE Cat. No.04TH8733), 2004Co-Authors: J S Pathmasuntharam, Amitabha Das, A K GuptaAbstract:Some wireless MAC protocols such as IEEE 802.11 were not designed to capitalize on the available multiple Channels in an efficient manner. In this paper, we propose a novel multi-Channel medium access Control protocol for wireless networks which we term us "primary Channel assignment based MAC". The protocol is based on the use of primary Channel assignment, which is used by other nodes to find the corresponding node. We also introduce a method to reduce the hidden terminal problem encountered in multi-Channel designs by proposing a modified transmission range threshold. The scheme eliminates the need for a separate Dedicated Control Channel or time slot that is usually prone to saturation when the traffic increases. The proposed scheme also addresses the broadcast messages problem in multi-Channel design. The scheme is based on IEEE 802.11 DCF protocol. The performance of the proposed protocol is compared to two other multi-Channel schemes. In an ad-hoc network, the protocol outperforms the other protocols by up to 140%.
Antonella Molinaro - One of the best experts on this subject based on the ideXlab platform.
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crasch a cooperative scheme for service Channel reservation in 802 11p wave vehicular ad hoc networks
International Conference on Ultra Modern Telecommunications, 2009Co-Authors: Claudia Campolo, Antonio Cortese, Antonella MolinaroAbstract:IEEE 802.11p is an emerging standard intended to support wireless access in the vehicular environment and to deliver both safety and non-safety applications to vehicles on the roads. Despite the massive research effort related to the design of reliable and timely schemes for dissemination of safety messages, only a few works have investigated on-the-road delivery of non-safety data traffic, such as comfort and entertainment applications (e.g., multimedia, web browsing, e-mails, e-maps), by considering the standard features and capabilities. The IEEE802.11p/WAVE (Wireless Access for Vehicular Environment) standard foresees that safety and Control messages are carried over a Dedicated Control Channel, while non safety messages can be delivered over one of a set of available service Channels. In this paper, we propose a cooperative reservation scheme for service Channels to be carried out by wireless nodes acting as WAVE providers. The proposal is fully compliant with the IEEE802.11p/WAVE standard and supports both V2I (Vehicle-to-Infrastructure) and V2V (Vehicle-to-Vehicle) communications. We expect that the cooperative scheme can outperform the legacy IEEE 802.11p/WAVE protocol, by reducing the cases where two or more providers choose the same service Channel for non-safety traffic delivery. This would result in improved system performance without adversely affecting the delivery of safety applications on the Control Channel.
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ICUMT - CRaSCH: A cooperative scheme for service Channel reservation in 802.11p/WAVE vehicular ad hoc networks
2009 International Conference on Ultra Modern Telecommunications & Workshops, 2009Co-Authors: Claudia Campolo, Antonio Cortese, Antonella MolinaroAbstract:IEEE 802.11p is an emerging standard intended to support wireless access in the vehicular environment and to deliver both safety and non-safety applications to vehicles on the roads. Despite the massive research effort related to the design of reliable and timely schemes for dissemination of safety messages, only a few works have investigated on-the-road delivery of non-safety data traffic, such as comfort and entertainment applications (e.g., multimedia, web browsing, e-mails, e-maps), by considering the standard features and capabilities. The IEEE802.11p/WAVE (Wireless Access for Vehicular Environment) standard foresees that safety and Control messages are carried over a Dedicated Control Channel, while non safety messages can be delivered over one of a set of available service Channels. In this paper, we propose a cooperative reservation scheme for service Channels to be carried out by wireless nodes acting as WAVE providers. The proposal is fully compliant with the IEEE802.11p/WAVE standard and supports both V2I (Vehicle-to-Infrastructure) and V2V (Vehicle-to-Vehicle) communications. We expect that the cooperative scheme can outperform the legacy IEEE 802.11p/WAVE protocol, by reducing the cases where two or more providers choose the same service Channel for non-safety traffic delivery. This would result in improved system performance without adversely affecting the delivery of safety applications on the Control Channel.
