Measurement-based analysis of the performance of several wireless technologies

Abstract

Abstract-Wireless technologies have rapidly evolved and are becoming ubiquitous. An increasing number of users attach to the Internet using these technologies; hence the performance of these wireless access links is a key point when considering the performance of the whole Internet. In this paper we present a measurement-based analysis of the performance of an IEEE 802.16 (WiMAX) client and an UMTS client. The measurements were carried out in a controlled laboratory. The wireless access links were loaded with traffic from a multi-point videoconferencing application and we measured three layer-3 metrics (One-Way-Delay, IP-Delay-Variation and Packet Loss Ratio). Additionally we estimate the performance of a WiFi and Ethernet client as a reference. Our results show that Ethernet and WiFi have comparable performances. Both the WiMAX and the UMTS links exhibited an asymmetric behavior, with the uplink showing an inferior performance. We also assessed the causes of the discretization which appears in the jitter distributions of these links.

The development of a smart grid co-simulation platform and case study on Vehicle-to-Grid voltage support application

“…3) WiMAX/IEEE 802.16e being used by the base stations. In order to provide realistic simulation results, we adopted round-trip-time delays close to the measurements obtained from real world WiMAX and WiFi networks, as reported by [16][17][18]. Table III shows the RTT of each link.…”

On the feasibility of bandwidth estimation in wireless access networks

“…Recently, there have been several measurement studies of 3G networks, both 1 9 EVDO [14,19,20] and UMTS [21][22][23][24][25][26][27]. The majority of these works [14,19,20,[22][23][24] study TCP performance in 3G networks, and its interactions with higher-layer protocols (HTTP) [23] or the wireless channel [14], by performing direct downloads.…”

“…The majority of these works [14,19,20,[22][23][24] study TCP performance in 3G networks, and its interactions with higher-layer protocols (HTTP) [23] or the wireless channel [14], by performing direct downloads. A few other works focus on delay-related metrics [25,27].…”

On the feasibility of bandwidth estimation in 1x EVDO networks

“…Recently, there have been several measurement studies of 3G networks, both 1x EVDO [4,15,18] and UMTS [26,22,23,12,2,11,5]. The majority of these works [4,15,18,22,23,12] study TCP performance in 3G networks by performing direct downloads.…”

“…The majority of these works [4,15,18,22,23,12] study TCP performance in 3G networks by performing direct downloads. A few other works focus on delay-related metrics [2,5]. Finally, [26,11] try to estimate the capacity of 3G networks for data and video calls.…”