On the impact of correlated shadowing on the performance of user-in-the-loop for mobility

Abstract

Abstract-The cellular network users are demanding more traffic and expecting a ubiquitous high data rate. Several techniques are investigated to cope with this massive demand. All the current solutions are focusing on improving this issue from the supply side. However it is expected that a significant improvement on the system performance can be gained if the end users become a part of the system and not just consumers. The user-in-the-loop (UIL) spatial approach provides a solution to fulfil the increasing traffic demand by convincing users to move to locations with higher SINR values. The previous results of the UIL are promising and a higher cell spectral efficiency is achieved only by the involvement of the users and without any investment on the supply side. UIL is a user-centric approach that offers an incentive to influence users' behavior to participate in the system improvement process. In this paper, the previous ideal environment of UIL is extended by integrating the important effect of correlated shadowing to the analysis of UIL performance. The obtained results in this paper confirm the previous results and promise significant performance improvements. Results show that the achieved higher spectral efficiency and the required moving distance depend on the correlation parameters.

Time-Frequency Grassmannian Signalling for MIMO Multi-Channel-Frequency-Flat Systems

“…The dashed curve represents the approximate spectral efficiency of the concatenated Grassmannian scheme in the LTE UMi scenario. We also depict the LTE peak spectral efficiency at 64 QAM and 5/6 code rate with only the channel estimation overhead taken into consideration [11].…”

LAPRA: Location-Aware Proactive Resource Allocation

“…A two dimensional true radio propagation field is generated for using (1). The predicted radio propagation field is generated for based on the uniformly distributed training locations using (7). The simulation parameters used to obtain the numerical results are given in Table I.…”

“…A different approach, called user-in-the-loop (UIL), was proposed in [5], [6], where the user can be controlled, in either space or time. In spatial control of UIL, the users are directed to locations which increases the spectral efficiency of the network [5], [7]. A similar approach is considered in [8], where a user-centric load balance scheme for small cell networks is proposed, in which users are allowed to move and chose their serving APs, based on a simple path loss model.…”

Dynamic Demand Control with Differentiated QoS in User-in-the-Loop Controlled Cellular Networks

“…The advantage is a substantially improved spectral efficiencyγ and thus energy-efficiency. The spatial UIL control has been treated in [5], [6], [13]. Spatial control becomes even more relevant when it comes to femtocells and indoor navigation, where it is highly recommended to guide the user closer to the next hotspot.…”