In the past ten years, ultra wideband (UWB) technology
has attracted great attention from academia and industry
to enable a large number of applications. Typically, UWB was
candidate to deliver home connectivity, sensor networks and body
area networks. As UWB enabled devices operate in unlicensed
mode, standardization efforts have been carried out in different
parts of the globe to regulate their use in different contexts.
ECMA-368 is an industry led standard for high data rate
UWB communications. One of the key managing features of this
standard is the so called distributed beaconing.
In this paper, we analyze the distributed beaconing
mechanism of ECMA-368. We focus on the transient phase in
which newcomer devices attempt to join a network by accessing
the standard defined beacon period. The joining procedure
with which devices access the network is modeled by means
of an embedded absorbing Markov chain. The relevant issue
of modeling the miss-detection of beacon frames transmitted
over fading channels is also assessed. Performance evaluation of
distributed beaconing is given in terms of energy consumption.
The required overhead for network setup is also analyzed