On the characteristics and origins of internet flow rates
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
Congestion Control in Linux TCP
Proceedings of the FREENIX Track: 2002 USENIX Annual Technical Conference
End-to-end available bandwidth: measurement methodology, dynamics, and relation with TCP throughput
IEEE/ACM Transactions on Networking (TON)
Locating internet bottlenecks: algorithms, measurements, and implications
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
A 3: application-aware acceleration for wireless data networks
Proceedings of the 12th annual international conference on Mobile computing and networking
Experiences in a 3G network: interplay between the wireless channel and applications
Proceedings of the 14th ACM international conference on Mobile computing and networking
LTE, The UMTS Long Term Evolution: From Theory to Practice
LTE, The UMTS Long Term Evolution: From Theory to Practice
TCP revisited: a fresh look at TCP in the wild
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
Where's that phone?: geolocating IP addresses on 3G networks
Proceedings of the 9th ACM SIGCOMM conference on Internet measurement conference
Anatomizing application performance differences on smartphones
Proceedings of the 8th international conference on Mobile systems, applications, and services
Proceedings of the 8th international conference on Mobile systems, applications, and services
Characterizing radio resource allocation for 3G networks
IMC '10 Proceedings of the 10th ACM SIGCOMM conference on Internet 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
A first look at mobile hand-held device traffic
PAM'10 Proceedings of the 11th international conference on Passive and active measurement
LiveLab: measuring wireless networks and smartphone users in the field
ACM SIGMETRICS Performance Evaluation Review
A comparative study of handheld and non-handheld traffic in campus Wi-Fi networks
PAM'11 Proceedings of the 12th international conference on Passive and active measurement
Cellular data network infrastructure characterization and implication on mobile content placement
Proceedings of the ACM SIGMETRICS joint international conference on Measurement and modeling of computer systems
Profiling resource usage for mobile applications: a cross-layer approach
MobiSys '11 Proceedings of the 9th international conference on Mobile systems, applications, and services
An untold story of middleboxes in cellular networks
Proceedings of the ACM SIGCOMM 2011 conference
Over the top video: the gorilla in cellular networks
Proceedings of the 2011 ACM SIGCOMM conference on Internet measurement conference
Identifying diverse usage behaviors of smartphone apps
Proceedings of the 2011 ACM SIGCOMM conference on Internet measurement conference
Periodic transfers in mobile applications: network-wide origin, impact, and optimization
Proceedings of the 21st international conference on World Wide Web
A close examination of performance and power characteristics of 4G LTE networks
Proceedings of the 10th international conference on Mobile systems, applications, and services
TCP Vegas: end to end congestion avoidance on a global Internet
IEEE Journal on Selected Areas in Communications
Bandwidth estimation: metrics, measurement techniques, and tools
IEEE Network: The Magazine of Global Internetworking
Proceedings of the 2012 ACM conference on Internet measurement conference
Cell vs. WiFi: on the performance of metro area mobile connections
Proceedings of the 2012 ACM conference on Internet measurement conference
Network performance of smart mobile handhelds in a university campus WiFi network
Proceedings of the 2012 ACM conference on Internet measurement conference
Tackling bufferbloat in 3G/4G networks
Proceedings of the 2012 ACM conference on Internet measurement conference
How to reduce smartphone traffic volume by 30%?
PAM'13 Proceedings of the 14th international conference on Passive and Active Measurement
Appraising the delay accuracy in browser-based network measurement
Proceedings of the 2013 conference on Internet measurement conference
Silent TCP connection closure for cellular networks
Proceedings of the ninth ACM conference on Emerging networking experiments and technologies
Unveiling the hidden dangers of public IP addresses in 4G/LTE cellular data networks
Proceedings of the 15th Workshop on Mobile Computing Systems and Applications
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With lower latency and higher bandwidth than its predecessor 3G networks, the latest cellular technology 4G LTE has been attracting many new users. However, the interactions among applications, network transport protocol, and the radio layer still remain unexplored. In this work, we conduct an in-depth study of these interactions and their impact on performance, using a combination of active and passive measurements. We observed that LTE has significantly shorter state promotion delays and lower RTTs than those of 3G networks. We discovered various inefficiencies in TCP over LTE such as undesired slow start. We further developed a novel and lightweight passive bandwidth estimation technique for LTE networks. Using this tool, we discovered that many TCP connections significantly under-utilize the available bandwidth. On average, the actually used bandwidth is less than 50% of the available bandwidth. This causes data downloads to be longer, and incur additional energy overhead. We found that the under-utilization can be caused by both application behavior and TCP parameter setting. We found that 52.6% of all downlink TCP flows have been throttled by limited TCP receive window, and that data transfer patterns for some popular applications are both energy and network unfriendly. All these findings highlight the need to develop transport protocol mechanisms and applications that are more LTE-friendly.