Optimizing TCP Performance in Multi-AP Residential Broadband Connections via Mini-Slot Access
Domenico Giustiniano, Eduard Goma, Alberto Lopez Toledo, George, Athanasiou

TL;DR
This paper investigates how multi-AP TDMA policies affect TCP performance in residential broadband, introduces a model to predict RTT, and proposes a resource allocation algorithm that significantly improves throughput.
Contribution
It provides an analytical model for TCP RTT under multi-AP TDMA and a low-cost resource allocation algorithm that enhances throughput.
Findings
The proposed scheme reduces TCP RTT significantly.
It can improve aggregate throughput by up to 1.5 times.
Performance is close to the theoretical upper-bound in simulations.
Abstract
The high bandwidth demand of Internet applications has recently driven the need of increasing the residential download speed. A practical solution to the problem has been proposed aggregating the bandwidth of 802.11 Access Points (APs) backhauls in range via 802.11 connections. Since 802.11 devices are usually single-radio, the communication to multiple APs on different radio-channels requires the introduction of a time-division multiple access (TDMA) policy at the client station. Current investigation in this area supposes that there is a sufficient number of TCP flows to saturate the Asymmetric Digital Subscriber Line (ADSL) behind the APs. However, this may be not guaranteed according to the user traffic pattern. As a consequence, a TDMA policy introduces additional delays in the end-to-end transmissions that will cause degradation of the TCP throughput and an under-utilization of…
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