Cognitive Relay Nodes for airborne LTE emergency networks

Abstract

This paper is proposing a novel concept of Cognitive Relay Node for intelligently improving the radio coverage of an airborne LTE emergency network, considering the scenarios outlined in the ABSOLUTE research project. The proposed network model was simulated comparing the different cases of deploying relay nodes to complement the coverage of an aerial LTE network. Simulation results of the proposed Cognitive Relay Nodes show significant performance improvement in terms of radio coverage quantified by the regional outage probability enhancement. Also, this paper is presenting the methodology and results of choosing the optimum aerial eNodeB altitude.

An enhanced design of a 5G MIMO antenna for fixed wireless aerial access

“…However, [25,26] argue that altitude plays an important role since the payload weight and power consumption may affect the performance. [23,[27][28][29] draw a direct line between maximizing footprint coverage with altitude where pressure, wind speed, temperature, transmission power, and different antenna configuration need to be considered. [30,31] argue that a high aerial altitude would give a wider footprint coverage with increased LoS connectivity and yet it may yield less throughput with high path loss and power consumption.…”

On the Tradeoffs Between Coverage Radius, Altitude, and Beamwidth for Practical UAV Deployments

“…Other works that study UAV deployment from the perspective of optimal altitude and coverage radius include [26]- [28]. The proposed algorithm in [26] finds the optimal altitude of UAV based on the desired radius of coverage in real time.…”

“…Results show that the size of the coverage area is affected by the environment. Ideas introduced in [27] are further elaborated in [28] leading to the conclusion that larger buildings require a higher UAV altitude. Additionally, [28] addresses network coverage through a cognitive relay node network model with a goal to enhance the performance of standard relay nodes.…”

Optimization of aerial base station location in LAP for disaster situations

“…Those platforms, gathered under the denomination of Low Altittute Platforms (LAP) like ABSOLUTE and Google projects [6], [7] have the potential to effectively complement conventional satellite or terrestrial telecommunication infrastructures. LAPs are easier to deploy and are inline with the broadband cellular concept, since low altitude combines both coverage excellence and restricted cell radius [8]. Applied standards could be Wi-Fi, Wi-MAX, LTE-A or as legacy as GSM, TETRA or P-25 systems [4].…”