Communications voids, where geographic greedy forwarding fails to move a packet further
towards its destination, are an important issue for geographic routing in wireless networks …

Ad hoc low-power wireless networks are an exciting research direction in sensing and
pervasive computing. Prior security work in this area has focused primarily on denial of …

Wireless sensor networks are tightly associated with the underlying environment in which
the sensors are deployed. The global topology of the network is of great importance to both …

One of the fundamental services provided by a wireless sensor network (WSN) is the
monitoring of a specified region of interest (RoI). Considering the fact that emergence of …

We study the problem of localizing a large sensor network having a complex shape, possibly
with holes. A major challenge with respect to such networks is to figure out the correct …

Wireless sensor networks (WSNs) are tightly linked with the practical environment in which
the sensors are deployed. Sensor positioning is a pivotal part of main location-dependent …

Wireless sensor networks typically consist of small, very simple network nodes without any
positioning device like GPS. After an initialization phase, the nodes know with whom they …

Location-free boundary detection is an important issue in wireless sensor networks (WSNs).
Detecting and locating boundaries have a great relevance for network services, such as …

Full coverage is critical for the applications of surveillance and monitoring in wireless sensor
networks (WSNs). However, the emergence of coverage holes is unavoidable generally due …

Greedy forwarding with geographical locations in a wireless sensor network may fail at a
local minimum. In this paper we propose to use conformal map** to compute a new …