Implementing an adaptive sending rate by exploiting SNR in relation to throughput over Wireless Mesh Networks

Scott Fowler, Marc A. Eberhard, Keith J. Blow, A. Shaikh

Research output: Contribution to conferencePaperpeer-review

Abstract

Wireless Mesh Networks (WMNs) have emerged as a key technology for the next generation of wireless networking. Instead ofbeing another type of ad-hoc networking, WMNs diversify the capabilities of ad-hoc networks. There are many kinds of protocols that work over WMNs, such as IEEE 802.11a/b/g, 802.15 and 802.16. To bring about a high throughput under varying conditions, these protocols have to adapt their transmission rate. While transmission rate is a significant part, only a few algorithms such as Auto Rate Fallback (ARF) or Receiver Based Auto Rate (RBAR) have been published. In this paper we will show MAC, packet loss and physical layer conditions play important role for having good channel condition. Also we perform rate adaption along with multiple packet transmission for better throughput. By allowing for dynamically monitored, multiple packet transmission and adaptation to changes in channel quality by adjusting the packet transmission rates according to certain optimization criteria improvements in performance can be obtained. The proposed method is the detection of channel congestion by measuring the fluctuation of signal to the standard deviation of and the detection of packet loss before channel performance diminishes. We will show that the use of such techniques in WMN can significantly improve performance. The effectiveness of the proposed method is presented in an experimental wireless network testbed via packet-level simulation. Our simulation results show that regardless of the channel condition we were to improve the performance in the throughput.
Original languageEnglish
Pages288-304
Number of pages17
Publication statusPublished - Sep 2008
EventNetworking and Electronic Commerce Research Conference (NAEC 2008) - Lago di Garda (IT)
Duration: 25 Sep 200828 Sep 2008

Conference

ConferenceNetworking and Electronic Commerce Research Conference (NAEC 2008)
CityLago di Garda (IT)
Period25/09/0828/09/08

Keywords

  • Wireless Mesh Networks
  • wireless networking
  • high throughput
  • varying conditions
  • transmission rate
  • Auto Rate Fallback
  • Receiver Based Auto Rate
  • MAC
  • packet loss
  • physical layer conditions
  • multiple packet transmission

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