Maximization of User Association Deploying IRS in 6G Networks

TL;DR

This paper investigates how deploying intelligent reflecting surfaces (IRS) in 6G multi-tier networks can significantly improve user association probability and energy efficiency, especially at cell edges, in millimeter-wave systems.

Contribution

It introduces a novel analysis of IRS deployment in 6G networks, demonstrating its benefits for user association and power consumption reduction.

Findings

IRS deployment enhances user association probability at cell edges.

IRS reduces micro base station transmit power.

Deployment improves energy efficiency in 6G networks.

Abstract

Prospective mobile networks will be heterogeneous multi-tier networks, with different classes of base stations (BS) installed dependent on user demand. Multi-tier networks enable operators to enhance system capacity and coverage through flexible implementations. Intelligent reflecting surfaces (IRS) or reconfigurable intelligent surfaces (RIS) is a novel and disruptive technology that comprises a vast number of cost-efficient passive components, each of which can intelligently reflect the incident wave or signal with a reconfigurable phase shift. The objective of this work is to maximize the probability of user association for millimeter-wave (mmWave) carriers in a two-tier 6G network consisting of micro and macro cell tiers. Therefore, the work analyzed and compared the probability of user association for conventional and IRS-assisted micro base stations. The research derived that, the deployment of IRS in a micro cell significantly enhances or maximizes the probability of user association of the entire coverage region including the cell edge. Moreover, the deployment of IRS reduces the transmit power consumption of the micro base station which assures a notable energy efficiency.