ABSTRACT Smart environments have many potential benefits, ranging from energetic efficiency to be... more ABSTRACT Smart environments have many potential benefits, ranging from energetic efficiency to better living for the impaired and seamless interaction with smart devices. The devices empowering smart buildings, and specifically Wireless Sensor Networks, have recently gained a lot of interest among academy, industry and standardization bodies. However, current devices are not yet ready for mass-deployment, mainly due to management and security issues. This paper deals with the analysis of these issues, proposing a suitable methodology to overcome present limitations.
This paper deals with the problem of securing the configuration phase of an Internet of Things (I... more This paper deals with the problem of securing the configuration phase of an Internet of Things (IoT) system. The main drawbacks of current approaches are the focus on specific techniques and methods, and the lack of a cross layer vision of the problem. In a smart environment, each IoT device has limited resources and is often battery operated with limited capabilities (e.g., no keyboard). As a consequence, network security must be carefully analyzed in order to prevent security and privacy issues. In this paper, we will analyze the IoT threats, we will propose a security framework for the device initialization and we will show how physical layer security can effectively boost the security of IoT systems.
In modern wireless communication systems, power control plays a fundamental role for efficient ... more In modern wireless communication systems, power control plays a fundamental role for efficient resource utilization, in particular in the systems where the users share the same bandwidth at the same time. In such systems, in fact, many users transmit over the same radio channel using the same frequency band and time slots so that the signal of an individual user becomes interference for the other users. Hence the transmission power levels need to be smartly manipulated so as to achieve an adequate quality of service for as many users as possible and, thus, an efficient network utilization. Conventional power control algorithms adopt the Signal-to-Interference-plus-Noise Ratio (SINR) as controlled variable and neglect the important effects of the manipulated control variables (transmission powers) and of the retransmission mechanism on the queueing dynamics. In this paper, we pursue a different queue-based approach which takes into account the queueing dynamics and adopts the queue size as controlled variable. In particular, a novel queue-based power control algorithm with low on-line computational burden is proposed and its performance is evaluated both theoretically and via simulation experiments.
ABSTRACT Internet broadband access is becoming a reality in many countries. To fully exploit the ... more ABSTRACT Internet broadband access is becoming a reality in many countries. To fully exploit the benefits from high-speed connection, both suitable home network connectivity and advanced services support have to be made available to the user. In this article, issues relative to the upgrade of existing home networks, particularly in old buildings, together with networking and security requirements are addressed, and possible solutions are proposed.
ABSTRACT At present, Sensor Networks and the emerging Internet of Things paradigm are playing a k... more ABSTRACT At present, Sensor Networks and the emerging Internet of Things paradigm are playing a key role in the industry and in academic research. In this article we outline a common scenario, currently arising standards, and other emerging technologies having a direct impact on network architecture. In particular we introduce a novel network architecture based on an M2M Gateway and discuss it in relation to smart building applications. The proposed network architecture will improve services for users and will offer new opportunities for both service providers and network operators.
AbstractThe rapid growth in the demand for mobile communications has led to intense research eff... more AbstractThe rapid growth in the demand for mobile communications has led to intense research efforts so as to achieve an efficient use of the scarce spectrum allocated for wireless communications. Therefore optimized radio resource management strategies have to be ...
ABSTRACT This paper deals with the application of hybrid automatic repeat request (H-ARQ) techniq... more ABSTRACT This paper deals with the application of hybrid automatic repeat request (H-ARQ) techniques to reliable data communications in wireless 3G networks. Basically, retransmission of coded data is endowed with soft combining schemes applied, respectively, to packet replicas, or to decoding algorithm outputs. By means of analytical derivations and simulations on UMTS environment, a noticeable bit error rate (BER) and, then, frame error rate (FER) improvements have been shown. A significant link throughput increase is also pointed out with a consequent reduced packet delivery delay and power wasting.
ABSTRACT Smart environments have many potential benefits, ranging from energetic efficiency to be... more ABSTRACT Smart environments have many potential benefits, ranging from energetic efficiency to better living for the impaired and seamless interaction with smart devices. The devices empowering smart buildings, and specifically Wireless Sensor Networks, have recently gained a lot of interest among academy, industry and standardization bodies. However, current devices are not yet ready for mass-deployment, mainly due to management and security issues. This paper deals with the analysis of these issues, proposing a suitable methodology to overcome present limitations.
This paper deals with the problem of securing the configuration phase of an Internet of Things (I... more This paper deals with the problem of securing the configuration phase of an Internet of Things (IoT) system. The main drawbacks of current approaches are the focus on specific techniques and methods, and the lack of a cross layer vision of the problem. In a smart environment, each IoT device has limited resources and is often battery operated with limited capabilities (e.g., no keyboard). As a consequence, network security must be carefully analyzed in order to prevent security and privacy issues. In this paper, we will analyze the IoT threats, we will propose a security framework for the device initialization and we will show how physical layer security can effectively boost the security of IoT systems.
In modern wireless communication systems, power control plays a fundamental role for efficient ... more In modern wireless communication systems, power control plays a fundamental role for efficient resource utilization, in particular in the systems where the users share the same bandwidth at the same time. In such systems, in fact, many users transmit over the same radio channel using the same frequency band and time slots so that the signal of an individual user becomes interference for the other users. Hence the transmission power levels need to be smartly manipulated so as to achieve an adequate quality of service for as many users as possible and, thus, an efficient network utilization. Conventional power control algorithms adopt the Signal-to-Interference-plus-Noise Ratio (SINR) as controlled variable and neglect the important effects of the manipulated control variables (transmission powers) and of the retransmission mechanism on the queueing dynamics. In this paper, we pursue a different queue-based approach which takes into account the queueing dynamics and adopts the queue size as controlled variable. In particular, a novel queue-based power control algorithm with low on-line computational burden is proposed and its performance is evaluated both theoretically and via simulation experiments.
ABSTRACT Internet broadband access is becoming a reality in many countries. To fully exploit the ... more ABSTRACT Internet broadband access is becoming a reality in many countries. To fully exploit the benefits from high-speed connection, both suitable home network connectivity and advanced services support have to be made available to the user. In this article, issues relative to the upgrade of existing home networks, particularly in old buildings, together with networking and security requirements are addressed, and possible solutions are proposed.
ABSTRACT At present, Sensor Networks and the emerging Internet of Things paradigm are playing a k... more ABSTRACT At present, Sensor Networks and the emerging Internet of Things paradigm are playing a key role in the industry and in academic research. In this article we outline a common scenario, currently arising standards, and other emerging technologies having a direct impact on network architecture. In particular we introduce a novel network architecture based on an M2M Gateway and discuss it in relation to smart building applications. The proposed network architecture will improve services for users and will offer new opportunities for both service providers and network operators.
AbstractThe rapid growth in the demand for mobile communications has led to intense research eff... more AbstractThe rapid growth in the demand for mobile communications has led to intense research efforts so as to achieve an efficient use of the scarce spectrum allocated for wireless communications. Therefore optimized radio resource management strategies have to be ...
ABSTRACT This paper deals with the application of hybrid automatic repeat request (H-ARQ) techniq... more ABSTRACT This paper deals with the application of hybrid automatic repeat request (H-ARQ) techniques to reliable data communications in wireless 3G networks. Basically, retransmission of coded data is endowed with soft combining schemes applied, respectively, to packet replicas, or to decoding algorithm outputs. By means of analytical derivations and simulations on UMTS environment, a noticeable bit error rate (BER) and, then, frame error rate (FER) improvements have been shown. A significant link throughput increase is also pointed out with a consequent reduced packet delivery delay and power wasting.
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