Max-min Rate Deployment Optimization for Backhaul-limited Robotic Aerial 6G Small Cells

05/07/2022
by   Yuan Liao, et al.
0

To overcome the limited on-board battery issue of nominal airborne base stations (ABSs), we are exploring the use of robotic airborne base station (RABS) with energy neutral grasping end-effectors that are able to autonomously perch at tall urban landforms. Specifically, this paper studies a heterogeneous network (HetNet) assisted by a movable RABS as a small cell which connects to a macro base station (MBS) through a limited-capacity wireless backhaul link, which can be deemed as another major challenge. To exploit the potential gains that the mobility of RABS can bring in the system, the minimum rate among all users is maximized by jointly optimizing the RABS deployment, user association and subcarrier allocation. This problem is initially formulated as a binary polynomial optimization (BPO) problem. After reformulating it as a nonconvex quadratically constrained quadratic programming (QCQP), we propose a semidefinite relaxation (SDR) based heuristic method to capture a high-quality solution in polynomial time. Numerical results reveal that deploying a RABS as the small cell can improve the minimum data rate by 95.43 on average, and the developed SDR heuristic algorithm significantly outperforms the linear relaxation (LR) baseline method.

READ FULL TEXT

page 1

page 6

research
10/07/2021

Optimal Deployment and Operation of Robotic Aerial 6G Small Cells with Grasping End Effectors

Although airborne base stations (ABSs) mounted on drones show a signific...
research
07/06/2023

Robust Deployment and Resource Allocation for Robotic Aerial Base Station Enabled OFDM Integrated Sensing and Communication

The envisioned robotic aerial base station (RABS) concept is expected to...
research
12/24/2021

Backhaul-Aware Drone Base Station Placement and Resource Management for FSO based Drone Assisted Mobile Networks

In drone assisted mobile networks, drones mounted small cell base statio...
research
04/21/2017

A Distributed Approach for Networked Flying Platform Association with Small Cells in 5G+ Networks

The densification of small-cell base stations in a 5G architecture is a ...
research
03/21/2023

Capacity Maximization of the 6G Networks Deploying IRS

The objective of the work is to improve the capacity of the micro cell, ...
research
10/30/2020

Interference Reduction in Virtual Cell Optimization

Virtual cell optimization clusters cells into neighborhoods and performs...
research
12/15/2015

Globally Optimal Joint Uplink Base Station Association and Beamforming

The joint base station (BS) association and beamforming problem has been...

Please sign up or login with your details

Forgot password? Click here to reset