1 research outputs found
On the Performance of Network-Assisted Device-to-Device Discovery
Device-to-Device (D2D) communications enable direct exchange of
localized traffic between cellular users in proximity. Nonetheless, the
employment of D2D communications heavily relies on the capability of the
cellular devices to infer on their proximity. In this paper, we analyze
the performance of network-assisted D2D discovery in random cellular
networks and derive optimal deployment strategies for transforming the
today’s cellular network, which is optimized for coverage and capacity,
into a D2D-centric network where the discovery and communications
between cellular devices will be orchestrated by the core network. In
this direction, we develop an analytical framework that exploits
existing knowledge of the cellular network topology and effectively
estimates the probability that two tagged devices are in proximity,
a.k.a. D2D discovery probability. Also, we identify conditions under
which the D2D discovery probability is maximized and assess the key
performance tradeoffs inherent to network-assisted D2D discovery