Optimizing AP association in wireless mesh network with multipath TCP

Jiacheng Shang, Lingfan Yu, Chaojing Xue, Wenzhong Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Wireless mesh network (WMN) has been proposed to extend wireless coverage by using multi-hop communication to enable network service for mobile devices via densely deployed mesh APs. While modern wireless devices are capable of using multiple WiFi interfaces, the Multipath TCP (MPTCP) protocol has been employed to make full use of the capacity of multiple radios. A key question of MPTCP communication in WMN is to decide the best access point (AP) association for each wireless interface to achieve maximum network performance. In this paper, we propose an optimal AP association scheme based on goodput measurement. We setup a wireless mesh testbed with densely deployed APs to study the impact of signal strength and multi-hop communication. We fit the measured data by a three-dimensional surface, which shows that network goodput can be estimated by a function of Received Signal Strength Indicator (RSSI) and hops. With the proposed estimation function, we formulate the AP association problem as a mathematical optimization problem and solve it by Integer Programming.We implement the proposed strategy in the real deployed testbed and evaluate its performance using MPTCP, which shows that it improves MPTCP goodput significantly compared to several existing strategies.

Original languageEnglish
Title of host publication2015 IEEE 21st International Workshop on Local and Metropolitan Area Networks, LANMAN 2015
PublisherIEEE Computer Society
ISBN (Electronic)9781467367615
DOIs
StatePublished - 28 May 2015
Event21st IEEE International Workshop on Local and Metropolitan Area Networks, LANMAN 2015 - Tsinghua, Beijing, China
Duration: 22 Apr 201524 Apr 2015

Publication series

NameIEEE Workshop on Local and Metropolitan Area Networks
Volume2015-May
ISSN (Print)1944-0367
ISSN (Electronic)1944-0375

Conference

Conference21st IEEE International Workshop on Local and Metropolitan Area Networks, LANMAN 2015
CountryChina
CityTsinghua, Beijing
Period22/04/1524/04/15

Keywords

  • AP association
  • Mesh network
  • Multipath TCP

Fingerprint Dive into the research topics of 'Optimizing AP association in wireless mesh network with multipath TCP'. Together they form a unique fingerprint.

Cite this