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Alay, Ö., Lutu, A., Peón-Quirós, M., Mancuso, V., Hirsch, T., Evensen, K., . . . Ajmone Marsan, M. (2017). Experience: An open platform for experimentation with commercial mobile broadband networks. In: MobiCom '17 Proceedings of the 23rd Annual International Conference on Mobile Computing and Networking: . Paper presented at MobiCom'17 The 23rd Annual International Conference on Mobile Computing and Networking, Snowbird, Utah, USA, October 16-20, 2017 (pp. 70-78). New York: ACM Digital Library
Open this publication in new window or tab >>Experience: An open platform for experimentation with commercial mobile broadband networks
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2017 (English)In: MobiCom '17 Proceedings of the 23rd Annual International Conference on Mobile Computing and Networking, New York: ACM Digital Library, 2017, p. 70-78Conference paper, Published paper (Refereed)
Abstract [en]

Open experimentation with operational Mobile Broadband (MBB) networks in the wild is currently a fundamental requirement of the research community in its endeavor to address the need of innovative solutions for mobile communications. Even more, there is a strong need for objective data about stability and performance of MBB (e.g., 3G/4G) networks, and for tools that rigorously and scientifically assess their status. In this paper, we introduce the MONROE measurement platform: an open access and flexible hardware-based platform for measurements and custom experimentation on operational MBB networks. The MONROE platform enables accurate, realistic and meaningful assessment of the performance and reliability of 11 MBB networks in Europe. We report on our experience designing, implementing and testing the solution we propose for the platform. We detail the challenges we overcame while building and testing the MONROE testbed and argue our design and implementation choices accordingly. We describe and exemplify the capabilities of the platform and the wide variety of experiments that external users already perform using the system

Place, publisher, year, edition, pages
New York: ACM Digital Library, 2017
National Category
Computer Sciences Computer Systems Communication Systems Computer Engineering
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-65147 (URN)10.1145/3117811.3117812 (DOI)978-1-4503-4916-1 (ISBN)
Conference
MobiCom'17 The 23rd Annual International Conference on Mobile Computing and Networking, Snowbird, Utah, USA, October 16-20, 2017
Projects
MONROE
Funder
EU, Horizon 2020
Available from: 2017-11-09 Created: 2017-11-09 Last updated: 2018-07-23Bibliographically approved
Peón-Quirós, M., Mancuso, V., Comite, V., Lutu, A., Alay, Ö., Alfredsson, S., . . . Hirsch, T. (2017). Results from Running an Experiment as a Service Platform for Mobile Networks. In: WiNTECH '17 Proceedings of the 11th Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization: . Paper presented at WiNTECH '17 October 20, 2017, Snowbird, Utah, USA. (pp. 9-16). New York, USA: ACM Digital Library
Open this publication in new window or tab >>Results from Running an Experiment as a Service Platform for Mobile Networks
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2017 (English)In: WiNTECH '17 Proceedings of the 11th Workshop on Wireless Network Testbeds, Experimental evaluation & CHaracterization, New York, USA: ACM Digital Library, 2017, p. 9-16Conference paper, Published paper (Refereed)
Abstract [en]

In this paper we present a selection from a vast range of experiments run with MONROE, our experiment as a service platform open to external researchers. We show that the platform can be used to benchmark network performance in a repeatable and controlled manner thanks to the collection of a rich set of geotagged metadata and the execution of discretionary user experiments. Indeed, with the sheer amount of data collected from 12 commercial mobile operators across Europe, MONROE offers an unprecedented opportunity to monitor, analyze and ultimately improve the status of current and future mobile broadband networks. We also show how flexibly the platform allows combining metadata and experimental data series during the experiments or by means of post-processing, and show results produced by our own experiments as well as by external research groups and developers that have been granted access to the platform

Place, publisher, year, edition, pages
New York, USA: ACM Digital Library, 2017
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-65800 (URN)10.1145/3131473.3131485 (DOI)978-1-4503-5147-8 (ISBN)
Conference
WiNTECH '17 October 20, 2017, Snowbird, Utah, USA.
Projects
MONROE (4806)
Funder
EU, Horizon 2020, 644399
Note

Del av konferensen MobiCom '17, The 23rd Annual International Conference on Mobile Computing and Networking Snowbird, Utah, USA — October 16 - 20, 2017

Available from: 2018-01-24 Created: 2018-01-24 Last updated: 2018-07-23Bibliographically approved
Khatouni, A. S., Mellia, M., Ajmone Marsan, M., Alfredsson, S., Karlsson, J., Brunström, A., . . . Mancuso, V. (2017). Speedtest-like Measurements in 3G/4G Networks: the MONROE Experience. In: Bolla, R Ciucu, F (Ed.), 2017 PROCEEDINGS OF THE 29TH INTERNATIONAL TELETRAFFIC CONGRESS (ITC 29), VOL 1: . Paper presented at 2017 29th International Teletraffic Congress (ITC 29). 4–8 September 2017. University of Genoa, Italy (pp. 169-177). IEEE
Open this publication in new window or tab >>Speedtest-like Measurements in 3G/4G Networks: the MONROE Experience
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2017 (English)In: 2017 PROCEEDINGS OF THE 29TH INTERNATIONAL TELETRAFFIC CONGRESS (ITC 29), VOL 1, IEEE, 2017, p. 169-177Conference paper, Published paper (Refereed)
Abstract [en]

Mobile Broadband (MBB) Networks are evolving at a fast pace, with technology enhancements that promise drastic improvements in capacity, connectivity, coverage, i.e., better performance in general. But how to measure the actual performance of a MBB solution? In this paper, we present our experience in running the simplest of the performance test: "speedtest-like" measurements to estimate the download speed offered by actual 3G/4G networks. Despite their simplicity, download speed measurements in MBB networks are much more complex than in wired networks, because of additional factors (e.g., mobility of users, physical impairments, diversity in technology, operator settings, mobile terminals diversity, etc.). We exploit the MONROE open platform, with hundreds of multihomed nodes scattered in 4 different countries, and explicitly designed with the goal of providing hardware and software solutions to run large scale experiments in MBB networks. We analyze datasets collected in 4 countries, over 11 operators, from about 50 nodes, for more than 2 months. After designing the experiment and instrumenting both the clients and the servers with active and passive monitoring tools, we dig into collected data, and provide insight to highlight the complexity of running even a simple speedtest. Results show interesting facts, like the occasional presence of NAT, and of Performance Enhancing Proxies (PEP), and pinpoint the impact of different network configurations that further complicate the picture. Our results will hopefully contribute to the debate about performance assessment in MBB networks, and to the definition of much needed benchmarks for performance comparisons of 3G, 4G and soon of 5G networks.

Place, publisher, year, edition, pages
IEEE, 2017
Keywords
Open Data, Open platform, Mobile Broadband network, Passive measurement, Active measurement
National Category
Computer Sciences
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-65913 (URN)10.23919/ITC.2017.8064353 (DOI)000414243800021 ()
Conference
2017 29th International Teletraffic Congress (ITC 29). 4–8 September 2017. University of Genoa, Italy
Projects
MONROE
Funder
EU, Horizon 2020, 4806
Available from: 2018-01-25 Created: 2018-01-25 Last updated: 2018-10-12Bibliographically approved
Alay, Ö., Lutu, A., García, R., Peón Quirós, M., Mancuso, V., Hirsch, T., . . . Lønsethagen, H. (2016). MONROE, a distributed platform to measure and assess mobile broadband networks: demo. In: Proceedings of the Tenth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization: . Paper presented at WiNTECH'16 Tenth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization, New York — October 03 - 07, 2016 (pp. 85-86). New York, NY, USA: Association for Computing Machinery (ACM)
Open this publication in new window or tab >>MONROE, a distributed platform to measure and assess mobile broadband networks: demo
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2016 (English)In: Proceedings of the Tenth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization, New York, NY, USA: Association for Computing Machinery (ACM), 2016, p. 85-86Conference paper, Published paper (Refereed)
Abstract [en]

This demo presents the MONROE distributed platform and how it can be used to implement measurement and assessment experiments with operational mobile broadband networks (MBBs). MONROE provides registered experimenters with open access to hundreds of nodes, distributed over several European countries and equipped with multiple MBB connections, and a backend system that collects the measurement results. Experiments are scheduled through a user-friendly web client, with no need to directly access the nodes. The platform further embeds tools for real-time traffic flow analysis and a powerful visualization tool.

Place, publisher, year, edition, pages
New York, NY, USA: Association for Computing Machinery (ACM), 2016
National Category
Computer Sciences Telecommunications
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-47837 (URN)10.1145/2980159.2980172 (DOI)978-1-4503-4252-0 (ISBN)
Conference
WiNTECH'16 Tenth ACM International Workshop on Wireless Network Testbeds, Experimental Evaluation, and Characterization, New York — October 03 - 07, 2016
Projects
EU H2020 MONROE Measuring Mobile Broadband Networks in Europe
Funder
EU, Horizon 2020, 4806
Available from: 2017-02-03 Created: 2017-02-03 Last updated: 2018-11-07Bibliographically approved
di stasi, G., Karlsson, J., Avallone, S., Canonico, R., Kassler, A. & Brunström, A. (2014). Combining Multi-Path Forwarding and Packet Aggregation for Improved Network Performance in Wireless Mesh Networks. Computer Networks, 68, 26-37
Open this publication in new window or tab >>Combining Multi-Path Forwarding and Packet Aggregation for Improved Network Performance in Wireless Mesh Networks
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2014 (English)In: Computer Networks, ISSN 1389-1286, E-ISSN 1872-7069, Vol. 68, p. 26-37Article in journal (Refereed) Published
Abstract [en]

Wireless mesh networks (WMNs) based on the IEEE 802.11 standard are becoming increasingly popular as a viable alternative to wired networks. WMNs can cover large or difficult to reach areas with low deployment and management costs. Several multi-path routing algorithms have been proposed for such kind of networks with the objective of load balancing the traffic across the network and providing robustness against node or link failures. Packet aggregation has also been proposed to reduce the overhead associated with the transmission of frames, which is not negligible in IEEE 802.11 networks. Unfortunately, multi-path routing and packet aggregation do not work well together, as they pursue different objectives. Indeed, while multi-path routing tends to spread packets among several next-hops, packet aggregation works more efficiently when several packets (destined to the same next-hop) are aggregated and sent together in a single MAC frame. In this paper, we propose a technique, called aggregation aware forwarding, that can be applied to existing multi-path routing algorithms to allow them to effectively exploit packet aggregation so as to increase their network performance. In particular, the proposed technique does not modify the path computation phase,but it just influences the forwarding decisions by taking the state of the sending queues into account.We demonstrated our proposed technique by applying it to Layer-2.5, a multi-path routing and forwarding paradigm for WMNs that has been previously proposed.We conducted a thorough performance evaluation by means of the ns-3 network simulator, which showed that our technique allows to increase the performance both in terms of network throughput and end-to-end delay.

Place, publisher, year, edition, pages
Elsevier, 2014
Keywords
Wireless Mesh Network, Multi-path routing, Packet Aggregation
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-16113 (URN)10.1016/j.comnet.2014.01.006 (DOI)000335610700003 ()
Available from: 2012-12-07 Created: 2012-12-07 Last updated: 2018-07-23Bibliographically approved
Karlsson, J. (2013). Transport-Layer Performance in Wireless Multi-Hop Networks. (Doctoral dissertation). Karlstad: Karlstads universitet
Open this publication in new window or tab >>Transport-Layer Performance in Wireless Multi-Hop Networks
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wireless communication has seen a tremendous growth in the last decades. Continuing on this trend, wireless multi-hop networks  are nowadays used or planned for use in a multitude of contexts, spanning from Internet access at home to emergency situations.

The Transmission Control Protocol (TCP) provides reliable and ordered delivery of a data and is used by major Internet applications such as web browsers, email clients and file transfer programs. TCP traffic is also the dominating traffic type on the Internet. However, TCP performs less than optimal in wireless multi-hop networks due to packet reordering, low link capacity, packet loss and variable delay.

In this thesis, we develop novel proposals for enhancing the network and transport layer to improve TCP performance in wireless multi-hop networks. As initial studies, we experimentally evaluate the performance of different TCP variants, with and without mobile nodes. We further evaluate the impact of multi-path routing on TCP performance and propose packet aggregation combined with aggregation aware multi-path forwarding as a means to better utilize the available bandwidth. The last contribution is a novel extension to multi-path TCP to  enable single-homed hosts to fully utilize the network capacity.

Place, publisher, year, edition, pages
Karlstad: Karlstads universitet, 2013. p. 71
Series
Karlstad University Studies, ISSN 1403-8099 ; 2013:1
Keywords
TCP, MPTCP, transport protocols, packet aggregation, multi-path routing, reordering, wireless multi-hop networks, tactical MANET, mobile ad hoc networks, wireless mesh networks
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-15603 (URN)978-91-7063-473-4 (ISBN)
Public defence
2013-03-04, 1B 364, Fröding, Karlstads Universitet, Karlstad, 10:15 (English)
Opponent
Supervisors
Note

Opponent changed. Prof. C. Lindeman from the University of Leipzig was substituted by Prof. Zhang.

Available from: 2013-02-08 Created: 2012-11-14 Last updated: 2018-07-23Bibliographically approved
Karlsson, J., Hurtig, P., Brunstrom, A., Kassler, A. & di Stasi, G. (2012). Impact of Multi-path Routing on TCP Performance. In: 2012 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2012): . Paper presented at The 13th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2012), June 2012, San Francisco, USA (pp. 1-3). Washington, DC: IEEE Press
Open this publication in new window or tab >>Impact of Multi-path Routing on TCP Performance
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2012 (English)In: 2012 IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2012), Washington, DC: IEEE Press, 2012, p. 1-3Conference paper, Published paper (Refereed)
Abstract [en]

Routing packets over multiple disjoint paths towards a destination can increase network utilization by load-balancing the traffic over the network. The drawback of load-balancing is that different paths might have different delay properties, causing packets to be reordered. This can reduce TCP performance significantly, as reordering is interpreted as a sign of congestion. Packet reordering can be avoided by letting the network layer route strictly on flow-level. This will, however, also limit the ability to achieve optimal network throughput. There are also several proposals that try to mitigate the effects of reordering at the transport layer. In this paper, we perform an initial evaluation of such TCP reordering mitigations in multi-radio multi-channel wireless mesh networks when using multi-path routing. We evaluate two TCP reordering mitigation techniques implemented in the Linux kernel. The transport layer mitigations are compared using different multi-path routing strategies. Our findings show that, in general, flow-level routing gives the best TCP performance and that transport layer reordering mitigations only marginally can improve performance.

Place, publisher, year, edition, pages
Washington, DC: IEEE Press, 2012
Keywords
TCP, reordering, wireless mesh networks, multi-channel, multi-radio, multi-path
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-13633 (URN)10.1109/WoWMoM.2012.6263723 (DOI)978-1-4673-1238-7 (ISBN)
Conference
The 13th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM 2012), June 2012, San Francisco, USA
Available from: 2012-06-13 Created: 2012-06-13 Last updated: 2018-07-23Bibliographically approved
Karlsson, J., Hurtig, P., Brunstrom, A., Kassler, A. & di Stasi, G. (2012). Impact of Multi-path Routing on TCP Performance in Wireless Mesh Networks. In: Proceedings of the 8th Swedish National Computer Networking Workshop (SNCNW 2012): . Paper presented at 8th Swedish National Computer Networking Workshop (SNCNW 2012), June 7th 2012, Stockholm, Sweden.
Open this publication in new window or tab >>Impact of Multi-path Routing on TCP Performance in Wireless Mesh Networks
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2012 (English)In: Proceedings of the 8th Swedish National Computer Networking Workshop (SNCNW 2012), 2012Conference paper, Published paper (Refereed)
Abstract [en]

Routing packets over multiple disjoint paths to- wards a destination can increase network utilization by load- balancing the traffic over the network. The drawback of load-balancing is that different paths might have different delay properties, causing packets to be reordered. This can reduce TCP performance significantly, as reordering is interpreted as a sign of congestion. Packet reordering can be avoided by letting the network layer route strictly on flow-level. This will, however, also limit the ability to achieve optimal network throughput. There are also several proposals that try to mitigate the effects of reordering at the transport layer. In this paper, we perform an initial evaluation of such TCP reordering mitigations in multi-radio multi-channel wireless mesh networks when using multi-path routing. We evaluate two TCP reordering mitigation techniques implemented in the Linux kernel. The transport layer mitigations are compared using different multi-path routing strategies. Our findings show that, in general, flow-level routing gives the best TCP performance and that transport layer reordering mitigations only marginally can improve performance. 

Keywords
TCP, reordering, wireless mesh networks, multi-channel, multi-radio, multi-path
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-13630 (URN)
Conference
8th Swedish National Computer Networking Workshop (SNCNW 2012), June 7th 2012, Stockholm, Sweden
Available from: 2012-06-13 Created: 2012-06-13 Last updated: 2018-07-23Bibliographically approved
Karlsson, J., Hurtig, P., Brunstrom, A. & Kassler, A. (2012). MPTCP PathFinder - finding your ways to aggregated bandwidth. Karlstad: Karlstads universitet
Open this publication in new window or tab >>MPTCP PathFinder - finding your ways to aggregated bandwidth
2012 (English)Report (Other academic)
Abstract [en]

Many  networks are multi-path; mobile devices have multiple interfaces, data centers have redundant paths and ISPs forward traffic over disjoint paths to perform load-balancing. Multi-path TCP (MPTCP) is a new mechanism that transparently divides a TCP connection into subflows and distributes them over a host's network interfaces. While this enables multi-homed systems like e.g. smartphones to use several interfaces and thus different, and mostly disjoint, network paths for a single transmission, most end-systems are still single-homed. With one interface, standard MPTCP creates only a single subflow, making single-homed systems unable to benefit from MPTCP's functionality. In this paper we propose PathFinder, an MPTCP extension that tries to estimate the number of subflows required to fully utilize  the network capacity, enabling single-homed hosts to reap the benefits of MPTCP. We evaluate MPTCP with PathFinder and compare its performance to standard MPTCP. The evaluation shows that PathFinder is able to open a limited but sufficient amount of subflows to significantly increase the throughput when compared to using standard MPTCP.

Place, publisher, year, edition, pages
Karlstad: Karlstads universitet, 2012. p. 22
Series
Karlstad University Studies, ISSN 1403-8099 ; 2012:59
Keywords
MPTCP, Congestion Control, Wireless Mesh Networks, Multi-Path Routing
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-16167 (URN)978-91-7063-472-7 (ISBN)
Note

E-pub only.

Available from: 2013-01-08 Created: 2012-12-12 Last updated: 2018-07-23Bibliographically approved
Karlsson, J., Dimitrov, V. G., Kassler, A., Brunstrom, A., Nilsson, J. & Hansson, A. (2012). Performance Evaluation for TCP in Tactical Mobile Ad hoc Networks. In: Proceedings of International Conference on Wireless Information Networks and Systems: . Paper presented at International Conference on Wireless Information Networks and Systems (WINSYS'12), 24-27 July, 2012, Rome (pp. 277-282). SciTePress
Open this publication in new window or tab >>Performance Evaluation for TCP in Tactical Mobile Ad hoc Networks
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2012 (English)In: Proceedings of International Conference on Wireless Information Networks and Systems, SciTePress, 2012, p. 277-282Conference paper, Published paper (Refereed)
Abstract [en]

Tactical networks are used in military and rescue operations to provide timely and accurate information to operating teams.  Tactical networks have traditionally used long distance narrow band radio links. However, although these links provide robust real-time communication the limited bandwidth makes them less suited for high data-rate applications.  To support high-data rate TCP applications such as providing digital images and maps, emerging tactical networks use shorter range but higher data-rate wide band radio links and multi-hop.  Due to the requirement of cheap up-front cost, most MANET research has focused on Carrier Sense Multiple Access (CSMA) networks. However, in tactical networks, where bounded delays are important, Time Division Multiple Access (TDMA) can give better possibility to support the Quality of Service needed for real-time communication.  The purpose of this paper is to assess and compare the throughput of three state-of-the-art TCP versions and two routing protocols over TDMA based MANETs.

Place, publisher, year, edition, pages
SciTePress, 2012
Keywords
MANET, TCP, Tactical Networks, TDMA
National Category
Communication Systems
Research subject
Computer Science
Identifiers
urn:nbn:se:kau:diva-16109 (URN)978-989-8425-73-7 (ISBN)
Conference
International Conference on Wireless Information Networks and Systems (WINSYS'12), 24-27 July, 2012, Rome
Available from: 2012-12-07 Created: 2012-12-07 Last updated: 2018-07-23Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-4366-6625

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