Modeling and Analysis of MPTCP Proxy-based LTE-WLAN Path Aggregation

TL;DR

This paper provides a stochastic geometry-based analysis of LTE-WLAN Path Aggregation using MPTCP, deriving conditions for AP operation and quantifying improvements in data rate and spectral efficiency.

Contribution

It introduces a tractable analytical model for large-scale LWPA networks, deriving closed-form expressions for key performance metrics and analyzing the impact of network parameters.

Findings

Active LWPA-mode WiFi AP density depends on network parameters.

Closed-form expressions for DL data rate and ASE are derived.

Numerical results show how network parameters influence performance.

Abstract

Long Term Evolution (LTE)-Wireless Local Area Network (WLAN) Path Aggregation (LWPA) based on Multi-path Transmission Control Protocol (MPTCP) has been under standardization procedure as a promising and cost-efficient solution to boost Downlink (DL) data rate and handle the rapidly increasing data traffic. This paper aims at providing tractable analysis for the DL performance evaluation of large-scale LWPA networks with the help of tools from stochastic geometry. We consider a simple yet practical model to determine under which conditions a native WLAN Access Point (AP) will work under LWPA mode to help increasing the received data rate. Using stochastic spatial models for the distribution of WLAN APs and LTE Base Stations (BSs), we analyze the density of active LWPA-mode WiFi APs in the considered network model, which further leads to closed-form expressions on the DL data rate and area spectral efficiency (ASE) improvement. Our numerical results illustrate the impact of different network parameters on the performance of LWPA networks, which can be useful for further performance optimization.