Πλοήγηση ανά Θέμα "Global system for mobile communications"
Αποτελέσματα 1-6 από 6
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Downlink multi-user transmission for higher user speeds in IEEE 802.16m
(2009)A dynamic resource allocation algorithm with beam steering is evaluated for providing broadband wireless access to mobile users of the emerging IEEE 802.16m air interface standard. Thanks to our design, the coverage area ... -
Multi-RAT spectrum reallocation including carrier aggregation for 5G networks
(2018)Towards the 5G vision of massive access exploding the growth in data traffic, spectrum refarming and reallocation are considered key enabling technologies. Using spectrum reallocation (SR) with the spectrum originally ... -
On service time estimation in 802.11 wlans with heterogeneous traffic sources
(2008)This work presents a simple method to estimate IEEE 802.11 Distributed Coordination Function (DCF) service time. This is the total amount of time needed to transmit a given frame, which is defined as the duration from the ... -
On the use of distributed directive antenna arrays in mobile OFDMA networks
(2011)Distributed Omni Antenna Systems (OASs) have been proposed to increase the capacity of Broadband Wireless Access (BWA) systems. We investigate the extension of such systems by employing distributed Directive Antenna Arrays ... -
Reputation-based internet sharing in wireless neighborhood community networks
(2010)This paper proposes easily applicable distributed reputation-based policies to motivate users of a wireless community to share their Internet connection in a p2p fashion. The goal is the provision of free and good quality ... -
Uncertainty for anonymity and 2-dimensional range query distortion
(2010)In this work, we study the problem of anonymity-preserving data publishing in moving objects databases. In particular, the trajectory of a mobile user on the plane is no longer a polyline in a two-dimensional space, instead ...