Convergence Technologies for 3G Networks: IP, UMTS,EGPRS and ATM
Convergence Technologies for 3G Networks: IP, UMTS,EGPRS and ATM
Large-Scale RTT Measurements from an Operational UMTS/GPRS Network
WICON '05 Proceedings of the First International Conference on Wireless Internet
3G Evolution, Second Edition: HSPA and LTE for Mobile Broadband
3G Evolution, Second Edition: HSPA and LTE for Mobile Broadband
Measuring Mobile Peer-to-Peer Usage: Case Finland 2007
PAM '09 Proceedings of the 10th International Conference on Passive and Active Network Measurement
Speed testing without speed tests: estimating achievable download speed from passive measurements
IMC '10 Proceedings of the 10th ACM SIGCOMM conference on Internet measurement
Understanding the impact of the access technology: the case of web search services
TMA'11 Proceedings of the Third international conference on Traffic monitoring and analysis
Proceedings of the Seventh COnference on emerging Networking EXperiments and Technologies
TMA'10 Proceedings of the Second international conference on Traffic Monitoring and Analysis
Bayesian estimation of network-wide mean failure probability in 3g cellular networks
PERFORM'10 Proceedings of the 2010 IFIP WG 6.3/7.3 international conference on Performance Evaluation of Computer and Communication Systems: milestones and future challenges
Shortest path computation with no information leakage
Proceedings of the VLDB Endowment
Proceedings of the 2012 ACM conference on Internet measurement conference
First impressions on the state of cellular data connectivity in India
Proceedings of the 4th Annual Symposium on Computing for Development
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In this study we present network-wide measurements of Round-Trip-Time (RTT) from an operational 3G network, separately for GPRS/EDGE and UMTS/HSxPA sections. The RTTs values are estimated from passive monitoring based on the timestamps of TCP handshaking packets. Compared to a previous study in 2004, the measured RTT values have decreased considerably. We show that the network-wide RTT percentiles in UMTS/HSxPA are very stable in time and largely independent from the network load. Additionally, we present separate RTT statistics for handsets and laptops, finding that they are very similar in UMTS/HSxPA. During the study we identified a problem with the RTT measurement methodology -- mostly affecting GPRS/EDGE data -- due to early retransmission of SYNACK packets by some popular servers.