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Message dissemination is considered as a challenging task in Vehicular Ad-hoc network (VANET). In particular, safety messages, such as, road accident warning, traffic congestion warning, etc., are the most critical messages type that need to be efficiently transmitted in a wireless and mobile network where the topology changes dynamically. Many protocols have been proposed for the sake of disseminating...
The diversity of applications' types in Vehicular Ad hoc NETworks (VANETs) has spawned a large variety of messages that need to be efficiently disseminated between connected vehicles. The most critical messages are those dedicated for safety applications such as road hazardous warning, signal violation warning, etc. The dissemination of this sort of messages is considered as a challenging task in...
In this paper, we study the LTE-A (Long Term Evolution Advanced) downlink scheduling. Delay aware schedulers are among the popular schedulers presented in the literature. These schedulers are based on fix and exact delay budget. Nevertheless, wireless channels are quickly modified which make fix delays not effective. Several contributions, based on fuzzy logic method, are presented in the literature...
The diversity of applications' types in vehicular ad hoc networks (VANETs) has spawned a large variety of messages that need to be disseminated in a vehicle to vehicle (V2V) communication mode. The most critical messages are those dedicated for safety applications such as accident warning, road hazardous warning, signal violation warning, etc. The dissemination of this kind of messages is a challenging...
A good scheduler must respect requirements fixed by the 3GPP. Spectral efficiency may be assured by assigning each RB to the user that is predictable to exploit it at the best. The spectral efficiency guarantee may maximize the cell capacity. Similarly, assuring others requirements, which are fairness, computational complexity, cell-edge coverage, QoS provisioning, and energy savings can be achieved...
Information dissemination in vehicular networks is becoming a hot topic of research in the field of Vehicle-to-Vehicle (V2V) communications, since efficient data exchange is needed for most crucial applications (road accident warning, traffic congestion warning …). Many protocols have been then proposed for the sake of disseminating information with high reachability and low end-to-end delay in limited...
LTE (Long Term Evolution) is a broadband wireless communication specified by the 3GPP (Third Generation Partnership Project) on the way towards fourth-generation mobile. User traffic can be classified into two main classes which are RT (Real Time) and NRT traffic. To respond to RT's QoS requirements, resource allocation steps must be as optimal as possible. In this paper, we propose a new concept...
The specificity of overlay spectrum sharing in cognitive radio network, is that the secondary user has to handoff and vacate immediately the channel once the Primary User appears and reclaims it. Such handoff becomes more frequent specially in case of multichannel access since that in a wider band, a PU is likely to reclaim a part of the band more quickly, and the SU has to switch to a different set...
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