Evaluating the Performance of Multicast Resource Allocation Policies over LTE Systems

TL;DR

This paper evaluates various multicast resource allocation strategies in LTE systems using a multi-criteria decision method, finding that the MDI subgrouping approach offers the best balance of fairness and throughput.

Contribution

It introduces a multi-criteria decision making framework, TOPSIS, to compare multicast strategies in LTE, highlighting the effectiveness of the MDI subgrouping method.

Findings

MDI subgrouping outperforms other strategies in fairness and throughput

TOPSIS provides a comprehensive evaluation metric for multicast strategies

The study offers insights into optimal multicast resource allocation in LTE

Abstract

This paper addresses a multi-criteria decision method properly designed to effectively evaluate the most performing strategy for multicast content delivery in Long Term Evolution (LTE) and beyond systems. We compared the legacy conservative-based approach with other promising strategies in literature, i.e., opportunistic multicasting and subgroup-based policies tailored to exploit different cost functions, such as maximum throughput, proportional fairness and the multicast dissatisfaction index (MDI). We provide a comparison among above schemes in terms of aggregate data rate (ADR), fairness and spectral efficiency. We further design a multi-criteria decision making method, namely TOPSIS, to evaluate through a single mark the overall performance of considered strategies. The obtained results show that the MDI subgrouping strategy represents the most suitable approach for multicast content delivery as it provides the most promising trade-off between the fairness and the throughput achieved by the multicast members.