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Among the several features and capabilities introduced by every new 3GPP release on 5G cellular systems, the latest Release 17 will be remembered as the first that specifies a set of enhancements and adaptations to support mobile broadband services via satellite direct access. Specifically focused on the necessary physical layer mechanism and procedure modifications, this paper will present in detail...
This paper introduces novel UL access methods for 5G cellular IoT where devices can directly send a scheduler grant or a small data packet in the contention-based (CB) manner. The novelty of this work is in the combination of medium access control (MAC) contention access with physical layer optimization with new numerology applied to single carrier frequency division multiple access (SC-FDMA) waveforms...
In this paper, we present a new vehicular paging procedure for fast selection of vehicular relay node cells on access link to connect seamlessly vehicles equipped with an Long Term Evolution (LTE) communication module to the infrastructure. The proposed Radio Resource Control (RRC) protocols allows fast radio bearer setup in the Vehicular User Equipment (V-UE) without need to re-establish the Access-Stratum...
In this paper, we analyze the challenges of the interference environment in a hybrid network that consists of the device-to-device (D2D communication based ad-hoc connections and conventional cellular connections. Accordingly, time hopping (TH) based radio resource allocation schemes aiming to improve the robustness of the hybrid network are proposed. The performance improvement even with the simple...
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