Fundamentals of Large Sensor Networks: Connectivity, Capacity, Clocks, and Computation

Connectivity properties of large-scale sensor networks

In wireless sensor networks, both nodes and links are prone to failures. In this paper we study connectivity properties of large-scale wireless sensor networks and discuss their implicit effect on routing algorithms and network reliability. We assume a network model of n sensors which are distributed randomly over a field based on a given distribution function. The sensors may be unreliable wit...

Fundamentals of Wireless Sensor Networks

regions, 293Access control, 280Active sensor, 5Active volcano monitoring, 39Actuator, 5Additive white Gaussian noise (AWGN),118Ad-hoc deployment, 11Admittance, 22Aggregation, 273Aggregation attack, 276Air pressure, 38ALOHA, 127AM see Modulationamplitude modulationAmpere-Hour, 213Amplification, 4, 109Amplitude shift keying, 111<...

EE 550: Notes on Capacity and Connectivity in Large Networks

Maintaining Sensing Coverage and Connectivity in Large Sensor Networks

In this paper, we address the issues of maintaining sensing coverage and connectivity by keeping a minimum number of sensor nodes in the active mode in wireless sensor networks. We investigate the relationship between coverage and connectivity by solving the following two sub-problems. First, we prove that if the radio range is at least twice the sensing range, complete coverage of a convex are...

ENERGY AWARE DISTRIBUTED PARTITIONING DETECTION AND CONNECTIVITY RESTORATION ALGORITHM IN WIRELESS SENSOR NETWORKS

 Mobile sensor networks rely heavily on inter-sensor connectivity for collection of data. Nodes in these networks monitor different regions of an area of interest and collectively present a global overview of some monitored activities or phenomena. A failure of a sensor leads to loss of connectivity and may cause partitioning of the network into disjoint segments. A number of approaches have be...