This research describes an intrusion detection system designed to fulfill the need for increased mobile device security. The Battery-Sensing Intrusion Protection System (B-SIPS) [1] initially took a non-conventional approach to intrusion detection by recognizing attacks based on anomalous Instantaneous Current (IC) drainage. An extension of B-SIPS, the Multi-Vector Portable Intrusion Detection System (MVP-IDS) validates the idea of recognizing attacks based on anomalous IC drain by correlating the detected anomalies with wireless attack traffic from both the Wi-Fi and Bluetooth mediums. To effectively monitor the Wi-Fi and Bluetooth mediums for malicious packet streams, the Snort-Based Wi-Fi and Bluetooth Attack Detection and Signature System (BADSS) modules were introduced. MVP-IDS illustrates that IC anomalies, representing attacks, can be correlated with wireless attack traffic through a collaborative and multi-module approach. Furthermore, MVP-IDS not only correlates wireless attacks, but mitigates them and defends its clients using an administrative response mechanism. This research also provides insight into the ramifications of battery exhaustion Denial of Service (DoS) attacks on battery-powered mobile devices. Several IEEE 802.11 Wi-Fi, IEEE 802.15.1 Bluetooth, and blended attacks are studied to understand their effects on device battery lifetimes. In the worst case, DoS attacks against mobile devices were found to accelerate battery depletion as much as 18.5%. However, if the MVP-IDS version of the B-SIPS client was allowed to run in the background during a BlueSYN flood attack, it could mitigate the attack and preserve as much as 16% of a mobile device's battery lifetime as compared with an unprotected device. / Master of Science

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No description available.

Approved for public release, distribution is unlimited / This thesis studies the feasibility of developing a closed-loop shipboard sensor calibration system with two main objectives. The first objective was to reduce the number of personnel required to calibrate a shipboard sensor by 50%. The second was to reduce the time required to complete the calibration process by 60%. This was achieved by displaying the sensor data and the calibration standard data on a tablet PC. Wireless technology was used to transmit the data from the sensor and the calibration standard to the tablet PC. The data from the sensor is sent via IEEE 802.11b wireless LAN using DataSocket protocol and the calibration standard is sent via Bluetooth protocol. The technology can be installed and used on current ships in the United States Navy. Four software programs were developed to accomplish these goals. One program runs on the tablet PC and the other three run on the network capable application processor (NCAP). These four programs accomplish the goals stated. / Lieutenant, United States Navy

A comparative study between the techniques Bluetooth Low Energy and Bluetooth Classic has been performed in cooperation with Saab AB with the purpose to determine which technique is best suited for transmission of data between an Android unit and an embedded system. The parameters that has been analyzed are throughput, energy efficiency and susceptibility. The study has been performed in accordance with the method Design Science Research and has therefore produced an artefact in the form of a system that has been evaluated in an experiment where performance parameters have been measured and analyzed. The results show that BLE is more robust in environments with a high level of noise and can handle lower SNR levels than BR/EDR; 3 dB vs 7,5 dB. If enough transfer speed is reached, BLE would also give the best energy efficiency and if the specified maximum throughput is reached, BLE would, according to this study, have more than double the energy efficiency as BR/EDR. BLE is, according to most measures, preferable from Bluetooth version 5 and is future-proof but BR/EDR still provides the highest throughput.

FPGAs (Field Programmable Gate Arrays) dinamicamente reconfiguráveis (DR-FPGAs) são soluções promissoras para muitos sistemas embarcados devido a potencial redução de área de silício. Metodologias de projeto e ferramentas CAD relacionadas são ainda muito limitadas para auxiliarem os projetistas a encontrarem soluções dinamicamente reconfiguráveis para diferentes aplicações. Este trabalho propõe uma metodologia de projeto que combina modelos de alto nível em SystemC, técnicas de projeto de baixo nível e a metodologia de projeto modular da XILINX. SystemC foi utilizada para representar o comportamento de alto nível não temporizado e não-RTL, bem como o baixo nível RTL-DCS (Chaveamento Dinâmico de Circuitos). Um estudo de caso da Banda Base de um Controlador Bluetooth foi desenvolvido. Duas partições temporais foram testadas em nove diferentes DR-FPGAs. A exploração espacial mostrou que 33% das soluções investigadas atenderam a restrição da especificação de 625µs de tempo do quadro do pacote Bluetooth, deixando diferentes parcelas de recursos livres que podem ser explorados para acomodar outros módulos IP de sistemas mais complexos no mesmo dispositivo. / Dynamically Reconfigurable Field Programmable Gate Arrays (DR-FPGAs) are promising solutions for many embedded systems due to the potential silicon area reduction. Design methodologies and related CAD tools are still very limited to assist designers to encounter dynamically reconfigurable solutions for different applications. This work proposes a design methodology that combines high level SystemC models and design techniques with the low level modular design proposed by Xilinx. SystemC has been used to represent the high level untimed non-RTL behavior as well as the low level RTL-DCS (Dynamic Circuit Switching). A Bluetooth Baseband unit case study was performed. Two temporal-functional partitions were evaluated on nine different target DR-FPGAs. The design space exploration showed that 33% of the investigated solutions complied with the 625µs Bluetooth packet time frame specification leaving different amounts if free resources that may be explored to accommodate other IP modules of more complex systems on the same device.

Com o uso da tecnologia de Identificação por Radiofrequência (RFID), arquiteturas heterogêneas de processadores e as novas tendências da TV Digital e televisão via rede IP (IPTV) foi desenvolvido um sistema para montar, em tempo real, em forma automática, uma programação televisiva personalizada, baseada no perfil do grupo de usuários de um determinado televisor. Aplicações de vídeo sob demanda (VoD), IPTV e TV Digital permitem que cada telespectador possa assistir aos programas a qualquer momento, e assim construir sua grade de programação personalizada. Com um sistema de RFID é possível identificar as pessoas que se encontram próximas ao televisor. Com essas tecnologias unidas a um subsistema de análise de perfil, junto com os dados fornecidos pelos telespectadores no momento da contratação do serviço, e uma interface (middleware) para gerenciar os dados, é possível configurar um sistema que escolhe automaticamente quais programas e quais comerciais serão apresentados no aparelho de TV. Essa escolha é baseada no perfil dos telespectadores presentes naquele momento à frente da televisão e dos programas disponíveis naquele instante. As etiquetas (tags) de RFID usadas para o levantamento da audiência foram aparelhos celulares equipados com tecnologia Bluetooth, que possibilitam a identificação simultânea dos telespectadores via rádio. O algoritmo de recomendação é híbrido, possuindo componentes baseados em conteúdo e componentes colaborativos. O uso dos novos processadores heterogêneos exigiu o desenvolvimento de algoritmos paralelos que utilizam instruções do tipo SIMD, aceleradores e GPUs. Os sistemas que existem no momento (2011) nesta área, se limitam à identificação dos usuários mediante a digitação usando o controle remoto da TV e só identificam uma pessoa de cada vez. O uso de tecnologia por rádio, proposto nesta pesquisa, permite a identificação de várias pessoas simultaneamente, exigindo o desenvolvimento de padrões de um sistema completo baseado em grupos de perfis diferentes. A arquitetura do sistema elaborado está baseada no processador Cell BE e nas arquiteturas CPU+GPU, de forma que o tempo de execução do algoritmo fosse minimizado. / Merging together Radiofrequency identification (RFID), heterogeneous architectures of processors and new tendencies of the Digital TV (DTV) and television through IP network (IPTV), a system to create, automatically and in real-time, a personalized TV program schedule, based on the group of people profile next to a TV. Video-on-Demand (VoD) applications, IPTV and DTV allow each person to watch a chosen program at any moment and to its personalized programming guide. The RFID system allows the identification of the people next to the TV. This technology used with a profile analysis subsystem accessing a database of people preferences, and a middleware to manage the data, it is possible to set a system that automatically chooses with TV shows and with TV ads will be presented in the TV. This selection is based on the profile of the people next to the TV in that instant and on the available programs. The RFID tags used to detect the audience were the mobile phones equipped with Bluetooth, which allows the identification of its owner wirelessly. The recommendation algorithm is hybrid, containing collaborative and content-based components. The new heterogeneous processors demanded the development of parallel algorithms that use SIMD instruction, accelerators and GPUs. The systems that were available in the moment of this research (2011) were limited to the identification through login using remote control, one person by time. The use of RFID technology, proposed in this research, enables the simultaneous identification of many people at a time, demanding the development standards for group profiles recommendation. The systems architectures will be based on Cell BE processor and the conjunct CPU+GPU, focusing in the reduction of the algorithm execution time.

FPGAs (Field Programmable Gate Arrays) dinamicamente reconfiguráveis (DR-FPGAs) são soluções promissoras para muitos sistemas embarcados devido a potencial redução de área de silício. Metodologias de projeto e ferramentas CAD relacionadas são ainda muito limitadas para auxiliarem os projetistas a encontrarem soluções dinamicamente reconfiguráveis para diferentes aplicações. Este trabalho propõe uma metodologia de projeto que combina modelos de alto nível em SystemC, técnicas de projeto de baixo nível e a metodologia de projeto modular da XILINX. SystemC foi utilizada para representar o comportamento de alto nível não temporizado e não-RTL, bem como o baixo nível RTL-DCS (Chaveamento Dinâmico de Circuitos). Um estudo de caso da Banda Base de um Controlador Bluetooth foi desenvolvido. Duas partições temporais foram testadas em nove diferentes DR-FPGAs. A exploração espacial mostrou que 33% das soluções investigadas atenderam a restrição da especificação de 625µs de tempo do quadro do pacote Bluetooth, deixando diferentes parcelas de recursos livres que podem ser explorados para acomodar outros módulos IP de sistemas mais complexos no mesmo dispositivo. / Dynamically Reconfigurable Field Programmable Gate Arrays (DR-FPGAs) are promising solutions for many embedded systems due to the potential silicon area reduction. Design methodologies and related CAD tools are still very limited to assist designers to encounter dynamically reconfigurable solutions for different applications. This work proposes a design methodology that combines high level SystemC models and design techniques with the low level modular design proposed by Xilinx. SystemC has been used to represent the high level untimed non-RTL behavior as well as the low level RTL-DCS (Dynamic Circuit Switching). A Bluetooth Baseband unit case study was performed. Two temporal-functional partitions were evaluated on nine different target DR-FPGAs. The design space exploration showed that 33% of the investigated solutions complied with the 625µs Bluetooth packet time frame specification leaving different amounts if free resources that may be explored to accommodate other IP modules of more complex systems on the same device.

Com o uso da tecnologia de Identificação por Radiofrequência (RFID), arquiteturas heterogêneas de processadores e as novas tendências da TV Digital e televisão via rede IP (IPTV) foi desenvolvido um sistema para montar, em tempo real, em forma automática, uma programação televisiva personalizada, baseada no perfil do grupo de usuários de um determinado televisor. Aplicações de vídeo sob demanda (VoD), IPTV e TV Digital permitem que cada telespectador possa assistir aos programas a qualquer momento, e assim construir sua grade de programação personalizada. Com um sistema de RFID é possível identificar as pessoas que se encontram próximas ao televisor. Com essas tecnologias unidas a um subsistema de análise de perfil, junto com os dados fornecidos pelos telespectadores no momento da contratação do serviço, e uma interface (middleware) para gerenciar os dados, é possível configurar um sistema que escolhe automaticamente quais programas e quais comerciais serão apresentados no aparelho de TV. Essa escolha é baseada no perfil dos telespectadores presentes naquele momento à frente da televisão e dos programas disponíveis naquele instante. As etiquetas (tags) de RFID usadas para o levantamento da audiência foram aparelhos celulares equipados com tecnologia Bluetooth, que possibilitam a identificação simultânea dos telespectadores via rádio. O algoritmo de recomendação é híbrido, possuindo componentes baseados em conteúdo e componentes colaborativos. O uso dos novos processadores heterogêneos exigiu o desenvolvimento de algoritmos paralelos que utilizam instruções do tipo SIMD, aceleradores e GPUs. Os sistemas que existem no momento (2011) nesta área, se limitam à identificação dos usuários mediante a digitação usando o controle remoto da TV e só identificam uma pessoa de cada vez. O uso de tecnologia por rádio, proposto nesta pesquisa, permite a identificação de várias pessoas simultaneamente, exigindo o desenvolvimento de padrões de um sistema completo baseado em grupos de perfis diferentes. A arquitetura do sistema elaborado está baseada no processador Cell BE e nas arquiteturas CPU+GPU, de forma que o tempo de execução do algoritmo fosse minimizado. / Merging together Radiofrequency identification (RFID), heterogeneous architectures of processors and new tendencies of the Digital TV (DTV) and television through IP network (IPTV), a system to create, automatically and in real-time, a personalized TV program schedule, based on the group of people profile next to a TV. Video-on-Demand (VoD) applications, IPTV and DTV allow each person to watch a chosen program at any moment and to its personalized programming guide. The RFID system allows the identification of the people next to the TV. This technology used with a profile analysis subsystem accessing a database of people preferences, and a middleware to manage the data, it is possible to set a system that automatically chooses with TV shows and with TV ads will be presented in the TV. This selection is based on the profile of the people next to the TV in that instant and on the available programs. The RFID tags used to detect the audience were the mobile phones equipped with Bluetooth, which allows the identification of its owner wirelessly. The recommendation algorithm is hybrid, containing collaborative and content-based components. The new heterogeneous processors demanded the development of parallel algorithms that use SIMD instruction, accelerators and GPUs. The systems that were available in the moment of this research (2011) were limited to the identification through login using remote control, one person by time. The use of RFID technology, proposed in this research, enables the simultaneous identification of many people at a time, demanding the development standards for group profiles recommendation. The systems architectures will be based on Cell BE processor and the conjunct CPU+GPU, focusing in the reduction of the algorithm execution time.

<p>Behovet av tillgänglighet på kommunikation innebär att vi idag har krav på att meddelanden som skrivs över webben inte bara når oss via en dator utan även till våra mobiltelefoner. Målet med examensarbetet har varit att genom litteraturstudie och intervjuer konstruera ett webbaserat SMS-system som kan användas till att sända SMS textmeddelande till en godtycklig mobiltelefonenhet. Meddelande som sänds ska även lagras i databas och administreras via webbsidan. En jämförelse har även genomförts där syftet har varit att undersöka bäst lämpat programspråk för Bluetooth applikation. Metoden har grundat sig på kriterier. Jämförelsen mellan programspråken gav att Java med bibliotek från BlueCove var det bäst lämpade programspråket.  För konstruktion av SMS-systemet har en objektbaserad utvecklingsmodell tillämpats, dock inte i full skala. SMS-systemet är konstruerat av webbsida, databas, blåtandsapplikation, Bluetooth- och mobiltelefonenhet. Webbsidan bygger på ASP.NET 2.0, databasen XML och blåtandsapplikation programmerades i Java. Kontroll har utförts att systemet uppfyller kravspecifikation.</p> / <p>As there is now wide access to the World Wide Web, demand now exists for Web messages to be available not only via a computer but also via cell phones. The aim of the project was, by means of literature studies and interviews, to create a web-based SMS-system which can be used to send SMS text messages to arbitrary mobile phone devices from a web page.  The sent messages are also to be stored in a database and administered by means of the website. A comparison was also conducted in which the aim was to investigate the most suitable programming language for the Bluetooth application. The model for the study was based on given criteria. The comparison suggested that the Java programming language with its library from BlueCove was the most suitable. For the development of the system an object-based model has been applied, but this has not been adopted in a full scale manner at the present time. The SMS-system has been constructed by means of a Website, database, Bluetooth application and mobile phone unit. The website is based on an ASP.NET 2.0, database on XML and the Bluetooth application was written using Java. A control was conducted in order to test that the system meets the required specifications.</p>