Exact(25)
In order to improve spectrum efficiency in CRN, control channel is preferred to be deployed without dedicated spectrum allocation, i.e. the in-band way.
We give insights into the radio access approach that can be used for device discovery, considering in-coverage synchronized devices that exploit a dedicated spectrum portion to discover each other.
Macrocell users that pose a threat to nearby femtocells are assigned resources from the dedicated spectrum part.
Each dedicated spectrum part is divided into K physical resource blocks (PRB), each comprised of a set of L subsequent subcarriers.
It is also considered to support hierarchical spectrum access on licensed bands, spectrum sharing on unlicensed bands, intra-operator radio resource management, and dedicated spectrum monitoring [6].
In [23], a dedicated spectrum sensing engine is designed to enhance the sensing speed of a pure software implementation of a CSMA-based MAC protocol.
Similar(35)
Yang et al. [37] propose a sensing service model that employs dedicated wireless spectrum sensing networks providing spectrum sensing as a service, which include a large number of low-cost, well-designed, and carefully controlled sensors.
Despite the fact that the current practice of predominantly using dedicated licensed spectrum will remain the main stream, new regulatory tools and approaches of sharing the spectrum and optimizing its use must be devised [37].
Negotiations have been continuing between the White House and federal departments including defense, justice, state, Treasury and energy, which use dedicated government spectrum for official and classified communications.
However, it is seen in practice that even the dedicated radio spectrum is not used efficiently.
In production we use dedicated radio spectrum not only for contribution but also for radio cameras, radio microphones, in-ear monitoring, talkback and reverse video feeds.
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