2023
Morales, Jesús A. Cumana; Coupechoux, Marceau; Cordero, Juan Antonio
Metasurface for Enhanced Millimeter-Wave Communications under Imperfect Beam Alignment Conference Forthcoming
Proc. IEEE International Mediterranean Conference on Communications and Networking (MeditCom'2023), IEEE, Forthcoming.
Abstract | BibTeX | Tags: Performance, Performance Evaluation, Wireless
@conference{nokey,
title = {Metasurface for Enhanced Millimeter-Wave Communications under Imperfect Beam Alignment},
author = {Jesús A. Cumana Morales and Marceau Coupechoux and Juan Antonio Cordero},
year = {2023},
date = {2023-09-04},
urldate = {2023-09-04},
booktitle = {Proc. IEEE International Mediterranean Conference on Communications and Networking (MeditCom'2023)},
publisher = {IEEE},
abstract = {In this work, we investigate the impact of beam misalignment in the performance of a wireless system employing a metasurface to improve coverage in a non-line-of-sight (NLOS) scenario. The metasurface is modeled by an array of small radiating elements each of them terminated with a complex load. An equivalent Array Factor is defined, which allows visualizing the beamsteering properties of the metasurface in far-field conditions. Angular misalignment is modeled using a truncated Gaussian distribution and an expression to evaluate signal-to-noise ratio (SNR) in the presence of misalignment is derived. Numerical results show an SNR degradation close to 8 dB for 5° error magnitude and up to 14 dB if high-gain unit cells are used. Three mechanisms are explored, which can be used to reduce SNR degradation: increasing Metasurface dimensions allows recovering SNR by 7.4 dB, low unit cell gain allows improving SNR by close to 10.5 dB when compared to a high-gain cell and base station beamwidth decrease from 25.6° to 12.7° allows recovering SNR by 4 dB thanks to the higher BS beam gain. },
keywords = {Performance, Performance Evaluation, Wireless},
pubstate = {forthcoming},
tppubtype = {conference}
}
2019
Cordero, Juan Antonio; Lou, Wei
Modeling Dynamic Resource Allocation in the Edge Conference
Proceedings of the 8th IFIP/IEEE International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks (PEMWN'2019). , IEEE, 2019.
Abstract | BibTeX | Tags: Modeling, Performance Evaluation
@conference{Cordero2019,
title = { Modeling Dynamic Resource Allocation in the Edge},
author = {Juan Antonio Cordero and Wei Lou},
year = {2019},
date = {2019-11-26},
urldate = {2019-11-26},
booktitle = {Proceedings of the 8th IFIP/IEEE International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks (PEMWN'2019).
},
publisher = {IEEE},
abstract = {Edge computing technologies and integrated archi- tectures have been deployed to accommodate Internet traffic growth. These architectures include facilities (cloudlets, micro DCs) to cache and serve contents close to consumers. Resulting systems adapt to observed request/consumption patterns by allowing cloudlet coordination for content caching/dissemination. This paper presents a novel analytical model of transient dy- namics of the cloudlets set. The model is used to study system convergence, stability and delivered content locality. Results from this model are validated via simulations.},
keywords = {Modeling, Performance Evaluation},
pubstate = {published},
tppubtype = {conference}
}
2018
Desmouceaux, Yoann; Clausen, Thomas; Cordero, Juan Antonio; Townsley, W. Mark
Reliable Multicast with B.I.E.R. Journal Article
In: IEEE/KICS Journal of Communications and Networks (JCN), vol. 20, no. 2, pp. 182-197, 2018.
Abstract | Links | BibTeX | Tags: B.I.E.R., Broadcast, Chaire Cisco, Internet Broadcast, Multicast, Performance Evaluation, Reliable Content Distribution
@article{Desmouceaux0000,
title = {Reliable Multicast with B.I.E.R.},
author = {Yoann Desmouceaux and Thomas Clausen and Juan Antonio Cordero and W. Mark Townsley },
url = {http://www.thomasclausen.net/wp-content/uploads/2018/03/jcn-2018.pdf},
year = {2018},
date = {2018-02-28},
journal = {IEEE/KICS Journal of Communications and Networks (JCN)},
volume = {20},
number = {2},
pages = {182-197},
abstract = {Inter-network multicast protocols, which build and maintain multicast trees, incur both explicit protocol signalling, and maintenance of state in intermediate routers in the network. B.I.E.R. (Bit-Indexed Explicit Replication) is a technique which can provide a multicast service yet removes such complexities: in- termediate routers are unencumbered by group management, and no per-group state is to be maintained.
This paper explores the use of B.I.E.R. as a basis for develop- ing an efficient and reliable multicast mechanism, where redun- dant traffic is avoided, essential traffic is forwarded along shortest paths, and no per-flow state is required in intermediate routers. Evaluated by way of both an analytical model and network sim- ulation both in generic and in real network topologies with vary- ing background traffic loads, the proposed B.I.E.R.-based reliable multicast mechanism exhibits attractive performance attributes: it attains delivery success rates as high as any other reliable multicast service, but with significantly better link utilisation and no per-flow or per-group state in intermediate routers of the network.},
keywords = {B.I.E.R., Broadcast, Chaire Cisco, Internet Broadcast, Multicast, Performance Evaluation, Reliable Content Distribution},
pubstate = {published},
tppubtype = {article}
}
This paper explores the use of B.I.E.R. as a basis for develop- ing an efficient and reliable multicast mechanism, where redun- dant traffic is avoided, essential traffic is forwarded along shortest paths, and no per-flow state is required in intermediate routers. Evaluated by way of both an analytical model and network sim- ulation both in generic and in real network topologies with vary- ing background traffic loads, the proposed B.I.E.R.-based reliable multicast mechanism exhibits attractive performance attributes: it attains delivery success rates as high as any other reliable multicast service, but with significantly better link utilisation and no per-flow or per-group state in intermediate routers of the network.
2016
Cordero, Juan Antonio
Multi-Path TCP Performance Evaluation in Dual-Homed (Wired/Wireless) Devices Journal Article
In: Journal of Network and Computer Applications , vol. 70, pp. 131-139, 2016, ISSN: 1084-8045.
Abstract | Links | BibTeX | Tags: Internet Measurements, MP-TCP, Performance Evaluation, Wireless Transport
@article{Cordero2016,
title = {Multi-Path TCP Performance Evaluation in Dual-Homed (Wired/Wireless) Devices},
author = {Juan Antonio Cordero},
url = {https://www.epizeuxis.net/wp-content/uploads/2019/11/Multi-Path_TCP_Performance_Evaluation_in-1.pdf
http://www.sciencedirect.com/science/article/pii/S1084804516300819},
doi = {10.1016/j.jnca.2016.05.004},
issn = {1084-8045},
year = {2016},
date = {2016-07-01},
journal = {Journal of Network and Computer Applications },
volume = {70},
pages = {131-139},
abstract = {Multipath TCP is a major extension of TCP, designed for leveraging the increasing availability of multiple interfaces in end hosts, on one side, and the existence of diverse Internet paths between hosts, on the other. This paper proposes a measurement methodology and provides a first evaluation, based on real Internet experiments, of the user benefit of using MPTCP instead of TCP in devices with multiple wireless/wired networking interfaces. We focus on bandwidth utilization and file transfer delays. Our experiments, on a testbed with two disjoint paths connecting a server and a dual-homed probe, indicate that MPTCP is able, in most cases, to take advantage of additional bandwidth with limited cost in terms of delay, but also show that the MPTCP bandwidth benefit substantially degrades when the interfaces have very different bandwidth capacities.},
keywords = {Internet Measurements, MP-TCP, Performance Evaluation, Wireless Transport},
pubstate = {published},
tppubtype = {article}
}
2013
Yi, Jiazi; Clausen, Thomas; Igarashi, Yuichi
Evaluation of Routing Protocol for Low Power and Lossy Networks: LOADng and RPL Proceedings Article
In: 2013 IEEE Conference on Wireless Sensors, 2013.
Abstract | Links | BibTeX | Tags: Constrained Networks, LLN, LOADng, Performance Evaluation, RPL, Sensor Networks, Smart Grid, SOGRID
@inproceedings{Clausen2013a,
title = {Evaluation of Routing Protocol for Low Power and Lossy Networks: LOADng and RPL},
author = {Jiazi Yi and Thomas Clausen and Yuichi Igarashi},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2013-ICWiSE-Evaluation-of-Routing-Protocol-for-Low-Power-and-Lossy-Networks-LOADng-and-RPL.pdf},
doi = {10.1109/ICWISE.2013.6728773},
year = {2013},
date = {2013-12-01},
publisher = {2013 IEEE Conference on Wireless Sensors},
abstract = {Routing protocol is a critical component of Low- power and Lossy Networks for Smart Grid. The protocols are used for data forwarding, which includes data acquisition, information dissemination, etc. This paper evaluates two main routing protocols used for Low-power and Lossy Networks: RPL and LOADng, to understand their strengths and limitations. Observations are provided based on analysis of specification and experimental experience, regarding the protocol’s routing overhead, traffic pattern, resource requirement, fragmentation, etc. Simulations are further launched to study the performance in different traffic patterns, which include sensor-to-sensor traffic, sensor-to-root traffic and root-to-sensor bidirectional traffic. By evaluating those protocols, the readers could have better under- standing of the protocol applicability, and choose the appropriate protocol for desired applications.},
keywords = {Constrained Networks, LLN, LOADng, Performance Evaluation, RPL, Sensor Networks, Smart Grid, SOGRID},
pubstate = {published},
tppubtype = {inproceedings}
}
Clausen, Thomas; de Verdiere, Axel Colin; Yi, Jiazi
Performance analysis of Trickle as a flooding mechanism Proceedings Article
In: IEEE 15th International Conference on Communication Technology, 2013.
Abstract | Links | BibTeX | Tags: Constrained Networks, LLN, Performance Evaluation, RPL, Sensor Networks, Trickle
@inproceedings{Clausen2013b,
title = {Performance analysis of Trickle as a flooding mechanism},
author = {Thomas Clausen and Axel Colin de Verdiere and Jiazi Yi},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2013-ICCT-Performance-analysis-of-Trickle-as-a-flooding-mechanism.pdf},
doi = {http://dx.doi.org/10.1109/ICCT.2013.6820439},
year = {2013},
date = {2013-11-01},
publisher = {IEEE 15th International Conference on Communication Technology},
abstract = {“The Trickle Algorithm” is conceived as an adaptive mechanism for allowing efficient and reliable information sharing among nodes, communicating across a lossy and shared medium. Its basic principle is, for each node, to monitor transmissions from its neighbours, compare what it receives with its cur- rent state, and schedule future transmissions accordingly: if an inconsistency of information is detected, or if few or no neighbours have transmitted consistent information “recently”, the next transmission is scheduled “soon” – and, in case consistent information from a sufficient number of neighbours is received, the next transmission is scheduled to be “later”. Developed originally as a means of distributing firmware updates among sensor devices, this algorithm has found use also for distribution of routing information in the routing protocol RPL, standardised within the IETF for maintaining a routing topology for low-power and lossy networks (LLNs). Its use is also proposed in a protocol for multicast in LLNs, denoted “Multicast Forwarding Using Trickle”. This paper studies the performance of the Trickle algorithm, as it is used in that multicast protocol.},
keywords = {Constrained Networks, LLN, Performance Evaluation, RPL, Sensor Networks, Trickle},
pubstate = {published},
tppubtype = {inproceedings}
}
2012
Cordero, Juan Antonio; Philipp, Matias; Baccelli, Emmanuel
Routing across Wired and Wireless Mesh Networks: Experimental Compound Internetworking with OSPF Proceedings Article
In: Proceedings of the 8th IEEE International Wireless Communications and Mobile Computing Conference (WCMC 2012), 2012.
Abstract | Links | BibTeX | Tags: MANET, MESH, OSPF, OSPF4MANET, Performance Evaluation
@inproceedings{Cordero2012b,
title = {Routing across Wired and Wireless Mesh Networks: Experimental Compound Internetworking with OSPF},
author = {Juan Antonio Cordero and Matias Philipp and Emmanuel Baccelli},
url = {https://www.researchgate.net/publication/236883800_Routing_Across_Wired_and_Wireless_Mesh_Networks_Experimental_Compound_Internetworking_with_OSPF},
doi = {10.1109/IWCMC.2012.6314296},
year = {2012},
date = {2012-08-01},
publisher = {Proceedings of the 8th IEEE International Wireless Communications and Mobile Computing Conference (WCMC 2012)},
abstract = {As wireless mesh networks are deployed, a new concept emerges: compound internetworks, i.e., internetworks that contain both wired networks and wireless mesh networks. Routing is one of the key challenges that arises in compound internetworks: indeed, while specific routing protocols are typically used for wired networks on one hand, and for wireless mesh networks on the other hand, it has been observed that operating a single routing protocol to manage a compound internetwork as a whole brings several advantages. In this realm, the IETF has thus standardized protocol extensions to Open Shortest Path First (OSPF, the routing protocol used by more than 50 % of the wired routers in today's Internet), enabling OSPF to operate simultaneously on wired networks, and on wireless mesh or moderately mobile ad hoc networks (MANETs). This paper evaluates the performance of OSPF coupled with such a protocol extension for MANETs on an experimental compound internetwork testbed. This paper reports on experiments carried out with OSPF operating simul-taneously over Ethernet and 802.11b. Despite the limitations of the testbed, these experiments provide both a proof-of-concept and complementary results compared to prior work in the domain, which was mostly based on simulations, and focused on wireless ad hoc network scenarios only.},
keywords = {MANET, MESH, OSPF, OSPF4MANET, Performance Evaluation},
pubstate = {published},
tppubtype = {inproceedings}
}
2011
Herberg, Ulrich; Clausen, Thomas
Study of Multipoint-to-Point and Broadcast Traffic Performance in the 'IPv6 Routing Protocol for Low Power and Lossy Networks' (RPL) Journal Article
In: Journal of Ambient Intelligence and Humanized Computing, Springer, ISSN 1868-5137, Volume 2, Number 4, 2011, (http://link.springer.com/article/10.1007/s12652-011-0046-2).
Abstract | Links | BibTeX | Tags: Broadcast, Constrained Networks, LLN, LLN Broadcast, Multicast, Performance Evaluation, RPL, Sensor Networks
@article{LIX-NET-journal-119,
title = {Study of Multipoint-to-Point and Broadcast Traffic Performance in the 'IPv6 Routing Protocol for Low Power and Lossy Networks' (RPL)},
author = {Ulrich Herberg and Thomas Clausen},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2011-Journal-of-Ambient-Intelligence-and-Humanized-Computing-Study-of-Multipoint-to-Point-and-Broadcast-Traffic-Performance-in-the-IPv6-Routing-Protocol-for-Low-Power-and-Lossy-Networks-RPL.pdf},
year = {2011},
date = {2011-10-01},
journal = {Journal of Ambient Intelligence and Humanized Computing, Springer, ISSN 1868-5137, Volume 2, Number 4},
abstract = {Recent trends in Wireless Sensor Networks (WSNs) have suggested converging to such being IPv6-based. To this effect, the Internet Engineering Task Force has chartered a Working Group to develop a routing protocol specification, enabling IPv6-based multi-hop Wireless Sensor Networks. This routing protocol, denoted “IPv6 Routing Protocol for Low Power and Lossy Networks” (RPL), has been under development for approximately a year, and this paper takes a critical look at the state of advancement hereof: it provides a brief algorithmic description of the protocol, and discusses areas where—in the authors view—further efforts are required in order for the protocol to become a viable candidate for general use in WSNs. Among these areas is the lack of a proper broadcast mechanism. This paper suggests several such broadcast mechanisms, all aiming at (1) exploiting the existing routing state of RPL, while (2) requiring no additional state maintenance, and studies the performance of RPL and of these suggested mechanisms.},
note = {http://link.springer.com/article/10.1007/s12652-011-0046-2},
keywords = {Broadcast, Constrained Networks, LLN, LLN Broadcast, Multicast, Performance Evaluation, RPL, Sensor Networks},
pubstate = {published},
tppubtype = {article}
}
Herberg, Ulrich; Clausen, Thomas
A Comparative Performance Study of the Routing Protocols LOAD and RPL with Bi-Directional Traffic in Low-power and Lossy Networks (LLN) Proceedings Article
In: Proceedings of the Eighth ACM International Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN), 2011.
Abstract | Links | BibTeX | Tags: Constrained Networks, LLN, LOADng, Performance Evaluation, RPL, Sensor Networks
@inproceedings{Clausen2011a,
title = {A Comparative Performance Study of the Routing Protocols LOAD and RPL with Bi-Directional Traffic in Low-power and Lossy Networks (LLN)},
author = {Ulrich Herberg and Thomas Clausen},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2011-PE-WASUN-A-Comparative-Performance-Study-of-the-Routing-Protocols-LOAD-and-RPL-with-Bi-Directional-Traffic-in-Low-power-and-Lossy-Networks-LLN.pdf},
doi = {10.1145/2069063.2069076},
year = {2011},
date = {2011-10-01},
publisher = {Proceedings of the Eighth ACM International Symposium on Performance Evaluation of Wireless Ad Hoc, Sensor, and Ubiquitous Networks (PE-WASUN)},
abstract = {Routing protocols for sensor networks are often designed with explicit assumptions, serving to simplify design and re-duce the necessary energy, processing and communications requirements. Different protocols make different assump-tions – and this paper considers those made by the designers of RPL – an IPv6 routing protocol for such networks, de-veloped within the IETF. Specific attention is given to the predominance of bi-directional traffic flows in a large class of sensor networks, and this paper therefore studies the per-formance of RPL for such flows. As a point of comparison, a different protocol, called LOAD, is also studied. LOAD is derived from AODV and supports more general kinds of traffic flows. The results of this investigation reveal that for scenarios where bi-directional traffic flows are predomi-nant, LOAD provides similar data delivery ratios as RPL, while incurring less overhead and being simultaneously less constrained in the types of topologies supported.},
keywords = {Constrained Networks, LLN, LOADng, Performance Evaluation, RPL, Sensor Networks},
pubstate = {published},
tppubtype = {inproceedings}
}
Cordero, Juan Antonio
Link-State Routing Optimization for Compound Autonomous Systems in the Internet PhD Thesis
École polytechnique, 2011.
Abstract | Links | BibTeX | Tags: Ad-Hoc, MANET, MPR, Performance Evaluation, Thesis
@phdthesis{Cordero2011b,
title = {Link-State Routing Optimization for Compound Autonomous Systems in the Internet},
author = {Juan Antonio Cordero},
url = {https://www.researchgate.net/publication/262343881_Link-State_Routing_Optimization_for_Compound_Autonomous_Systems_in_the_Internet},
year = {2011},
date = {2011-09-15},
address = {Palaiseau, France},
school = {École polytechnique},
abstract = {This manuscript addresses the coexistence of planned and spontaneous interconnected networks in the Internet core. In this realm, the focus is on routing within a specific type of Autonomous System (AS) called compound AS, which contains both wireless ad hoc networks and wired fixed networks. The approach studied in this manuscript is to enhance existing Interior Gateway Protocols (IGPs), typically based on the link-state algorithm, in order to enable them to operate both in ad hoc networks and in wired networks. The manuscript thus analyzes the use of link-state routing in ad hoc networks. Based on this analysis, different techniques are proposed and theoretically evaluated, aiming at optimizing the performance of link state routing in a compound AS. The manuscript then investigates the impact of these techniques when applied to OSPF, one of the main IGPs used in the Internet. The performance of OSPF extensions on MANETs using the studied techniques are compared via simulations. Finally, OSPF operation over compound internetworks is evaluated via experiments on a testbed.},
keywords = {Ad-Hoc, MANET, MPR, Performance Evaluation, Thesis},
pubstate = {published},
tppubtype = {phdthesis}
}
2010
Clausen, Thomas; Herberg, Ulrich
Comparative Study of RPL-Enabled Optimized Broadcast in Wireless Sensor Networks Proceedings Article
In: Proceedings of the 6th International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP), 2010.
Abstract | Links | BibTeX | Tags: Broadcast, Constrained Networks, LLN, Multicast, Performance Evaluation, RPL, Sensor Networks
@inproceedings{Clausen2010e,
title = {Comparative Study of RPL-Enabled Optimized Broadcast in Wireless Sensor Networks},
author = {Thomas Clausen and Ulrich Herberg},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2010-ISSNIP-Comparative-Study-of-RPL-Enabled-Optimized-Broadcast-in-Wireless-Sensor-Networks.pdf},
doi = {10.1109/ISSNIP.2010.5706795},
year = {2010},
date = {2010-12-01},
publisher = {Proceedings of the 6th International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP)},
abstract = {Recent trends have suggested convergence to Wire-less Sensor Networks (WSNs) becoming IPv6-based. To this effect, the Internet Engineering Task Force has chartered a Work-ing Group to develop a routing protocol specification, enabling IPv6-based multi-hop Wireless Sensor Networks. The current effort of this working group is development of a uni-cast routing protocol denoted RPL. RPL constructs a “DAG-like” logical structure with a single root, at which the majority of the traffic flows terminate, and assumes restrictions on network dynamics and traffic generality, in order to satisfy strict constraints on router state and processing. This paper investigates the possibility for providing (effi-cient) network-wide broadcast mechanisms in WSNs, using the logical structure already provided by RPL. The aim hereof is to not impose any additional state requirements on WSN routers already running RPL. This paper presents two such broadcast mechanisms for RPL routed WSNs, and evaluates their performances. As part of this evaluation, the paper compares with MPR Flooding – an established efficient flooding optimization, widely used in MANETs.},
keywords = {Broadcast, Constrained Networks, LLN, Multicast, Performance Evaluation, RPL, Sensor Networks},
pubstate = {published},
tppubtype = {inproceedings}
}
Cordero, Juan Antonio
Adjacency Persistency in OSPF MANET Proceedings Article
In: Proceedings of the 4th IET China-Ireland International Conference on Information and Communication Technologies (CIICT’2010)., 2010.
Abstract | Links | BibTeX | Tags: MANET, OSPF, OSPF4MANET, Performance Evaluation
@inproceedings{Cordero2010,
title = {Adjacency Persistency in OSPF MANET},
author = {Juan Antonio Cordero},
url = {https://www.researchgate.net/publication/46388530_Adjacency_Persistency_in_OSPF_MANET},
year = {2010},
date = {2010-10-01},
publisher = {Proceedings of the 4th IET China-Ireland International Conference on Information and Communication Technologies (CIICT’2010).},
abstract = {Link-state routing remains as one of the most challenging issues in ad hoc networking, due to the special conditions and requirements that hold in such networks, which cannot be handled by classical routing protocols. In the last decade, several efforts have been deployed either to design new routing solutions adapted to ad hoc conditions, either to extend existing solutions for wired networks to the domain of wireless mobile scenarios. This paper elaborates on the latter alternative, focusing on the standard OSPF MANET extension RFC 5449. It analyzes the impact and interest of the persistency principle to the main OSPF MANET operations, in particular the adjacency synchronization and the other operations that relate to it (flooding and route construction). The presented results show that such persistent approach is appropriate for managing adjacencies in the context of RFC 5449, and significant improvements might be achieved by extending the persistent principle into the topology selection mechanism.},
keywords = {MANET, OSPF, OSPF4MANET, Performance Evaluation},
pubstate = {published},
tppubtype = {inproceedings}
}
2002
Clausen, Thomas; Viennot, Laurent; Olesen, Tue; Larsen, Nikolai
Investigating data broadcast performance in mobile ad-hoc networks Proceedings Article
In: Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on, pp. 786-790 vol.2, 2002, ISSN: 1347-6890.
Abstract | Links | BibTeX | Tags: Ad-Hoc, Broadcast, MANET, MANET Broadcast, MESH, Performance Evaluation
@inproceedings{Clausen2002a,
title = {Investigating data broadcast performance in mobile ad-hoc networks},
author = {Thomas Clausen and Laurent Viennot and Tue Olesen and Nikolai Larsen},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2002-WPMC-Investigating-data-broadcast-performance-in-mobile-ad-hoc-networks.pdf},
doi = {10.1109/WPMC.2002.1088283},
issn = {1347-6890},
year = {2002},
date = {2002-10-01},
booktitle = {Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on},
volume = {2},
pages = {786-790 vol.2},
abstract = {We investigate broadcasting in mobile ad-hoc networks (MANETs). We define broadcasting as being the process of delivering one packet, originated at one node, to (ideally) all other nodes in the MANET. We present specific problems related to broadcasting in MANETs, as well as four broadcast protocols aimed at providing MANET-wide broadcast. Further, three protocol-independent modifications are presented. One aimed at ensuring that a broadcast packet traverses at least the "shortest path" to its destinations, and two aimed at increasing the fraction of nodes which receive a broadcast packet. Through simulation studies, we evaluate the performance characteristics of the broadcast protocols and generic modifications under different conditions.},
keywords = {Ad-Hoc, Broadcast, MANET, MANET Broadcast, MESH, Performance Evaluation},
pubstate = {published},
tppubtype = {inproceedings}
}
Clausen, Thomas; Jacquet, Philippe; Viennot, Laurent
Investigating the impact of partial topology in proactive MANET routing protocols Proceedings Article
In: Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on, pp. 1374-1378 vol.3, 2002, ISSN: 1347-6890.
Abstract | Links | BibTeX | Tags: MESH, OLSR, Performance Evaluation
@inproceedings{Clausen2002,
title = {Investigating the impact of partial topology in proactive MANET routing protocols},
author = {Thomas Clausen and Philippe Jacquet and Laurent Viennot},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2002-WPMC-Investigating-the-impact-of-partial-topology-in-proactive-MANET-routing-protocols.pdf},
doi = {10.1109/WPMC.2002.1088405},
issn = {1347-6890},
year = {2002},
date = {2002-10-01},
booktitle = {Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on},
volume = {3},
pages = {1374-1378 vol.3},
abstract = {We study the impact of using partial versus full topology in the OLSR (optimized link state routing) protocol for MANETs (mobile ad hoc networks). The core of OLSR is the notion of multi-point relays (MPRs), serving the purpose of reducing the amount of link-state information flooded to nodes in the network, as well as reducing the redundancy in the flooding process. The OLSR protocol specification contains a tunable parameter, MPR coverage, which adjusts the degree of redundancy in both the advertised link-state information, and the links over which the link-state information is advertised. We investigate the impact of assigning various values to this parameter. We further investigate two options for advertising additional link-state information: the "MPR full link-state" option implies that whenever a node is selected to declare any link-state information, it declares all its local link state information; the "full link-state" option states, that all nodes must declare all their local link-state information. Through simulations, we investigate the performance characteristics of OLSR with and without these options.},
keywords = {MESH, OLSR, Performance Evaluation},
pubstate = {published},
tppubtype = {inproceedings}
}
Clausen, Thomas; Jacquet, Philippe; Viennot, Laurent
Comparative Study of Routing Protocols for Mobile Ad-hoc NETworks Proceedings Article
In: Proceedings of the IFIP MedHocNet, September 2002, Sardinia, Italy, 2002.
Abstract | Links | BibTeX | Tags: MANET, OLSR, Performance Evaluation, Routing
@inproceedings{Clausen2002c,
title = {Comparative Study of Routing Protocols for Mobile Ad-hoc NETworks},
author = {Thomas Clausen and Philippe Jacquet and Laurent Viennot},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2002-MedHocNets-Comparative-Study-of-Routing-Protocols-for-Mobile-Ad-hoc-NETwork.pdf},
year = {2002},
date = {2002-09-01},
booktitle = {Proceedings of the IFIP MedHocNet, September 2002, Sardinia, Italy},
abstract = {In this paper, we describe the Optimized Link State Routing Protocol (OLSR) [19],[20], a proactive routing protocol for Mobile Ad-hoc NETworks (MANETs). We eval- uate its performance through exhaustive simulations using the Network Simulator 2 (ns2) [1], and compare with other ad-hoc protocols, specifically the Ad-hoc On-Demand Dis- tance Vector (AODV) [4] routing protocol and the Dynamic Source Routing (DSR) [5] protocol. We study the protocols under varying conditions (node mobility, network density) and with varying traffic (TCP, UDP, different number of connections/streams) to provide a qualitative assessment of the applicability of the protocols in different scenarios.},
keywords = {MANET, OLSR, Performance Evaluation, Routing},
pubstate = {published},
tppubtype = {inproceedings}
}
Viennot, Laurent; Jacquet, Philippe; Clausen, Thomas
Analyzing Control Traffic Overhead in Mobile Ad-hoc Network Protocols versus Mobility and Data Traffic Activity Proceedings Article
In: In Proceedings of the 1st IFIP Annual Mediterranean Ad Hoc Networking Workshop (MedHocNet’02, 2002.
Abstract | Links | BibTeX | Tags: LOADng, MANET, MESH, Modeling, OLSR, Performance Evaluation, Reactive
@inproceedings{Viennot2002,
title = {Analyzing Control Traffic Overhead in Mobile Ad-hoc Network Protocols versus Mobility and Data Traffic Activity},
author = {Laurent Viennot and Philippe Jacquet and Thomas Clausen},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2002-MedHocNet-Analyzing-Control-Traffic-Overhead-versus-Mobility-and-Data-Traffic-Activity-in-Mobile-Ad-hoc-Network-Protocols.pdf},
year = {2002},
date = {2002-01-01},
booktitle = {In Proceedings of the 1st IFIP Annual Mediterranean Ad Hoc Networking Workshop (MedHocNet’02},
abstract = {This paper proposes a general, parameterized model for analyzing protocol control overheads in mobile ad-hoc networks. A probabilistic model for the network topology and the data traffic is proposed in order to estimate overhead due to control packets of routing protocols.},
keywords = {LOADng, MANET, MESH, Modeling, OLSR, Performance Evaluation, Reactive},
pubstate = {published},
tppubtype = {inproceedings}
}
2001
Clausen, Thomas; Hansen, Gitte; Christensen, Lars; Behrmann, Gerd
The Optimized Link State Routing Protocol Evaluation through Experiments and Simulation Proceedings Article
In: IN PROCEEDING OF WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS, IEEE, 2001.
Abstract | Links | BibTeX | Tags: MANET, MESH, OLSR, Performance Evaluation
@inproceedings{Clausen2001,
title = {The Optimized Link State Routing Protocol Evaluation through Experiments and Simulation},
author = {Thomas Clausen and Gitte Hansen and Lars Christensen and Gerd Behrmann},
url = {http://www.thomasclausen.net/wp-content/uploads/2015/12/2001-WPMC-The-Optimized-Link-State-Routing-Protocol-Evaluation-through-Experiments-and-Simulation.pdf},
year = {2001},
date = {2001-01-01},
booktitle = {IN PROCEEDING OF WIRELESS PERSONAL MULTIMEDIA COMMUNICATIONS},
publisher = {IEEE},
abstract = {In this paper, we describe the Optimized Link State Routing Protocol (OLSR) [1] for Mobile Ad-hoc NETworks (MANETs) and the evaluation of this protocol through experiments and simulations. In particular, we emphasize the practical tests and intensive simulations, which have been used in guiding and evaluating the design of the protocol, and which have been a key to identifying both problems and solutions. OLSR is a proactive link-state routing protocol, employing periodic message exchange for updating topological information in each node in the network. I.e. topological information is flooded to all nodes in the network. Conceptually, OLSR contains three elements: Mechanisms for neighbor sensing based on periodic exchange of HELLO messages within a node’s neighborhood. Generic mechanisms for efficient flooding of control traffic into the network employing the concept of multipoint relays (MPRs) [5] for a significant reduction of duplicate retransmissions during the flooding process. And a specification of a set of control-messages providing each node with sufficient topological information to be able to compute an optimal route to each destination in the network using any shortest-path algorithm. Experimental work, running a test-network of laptops with IEEE 802.11 wireless cards, revealed interesting properties. While the protocol, as originally specified, works quite well, it was found, that enforcing “jitter” on the interval between the periodic exchange of control messages in OLSR and piggybacking said control messages into a single packet, significantly reduced the number of messages lost due to collisions. It was also observed, that under certain conditions a “naive” neighbor sensing mechanism was insufficient: a bad link between two nodes (e.g. when two nodes are on the edge of radio range) might on occasion transmit a HELLO message in both directions (hence enabling the link for routing), while not being able to sustain continuous traffic. This would result in “route-flapping” and temporary loss of connectivity. With the experimental results as basis, we have been deploying simulations to reveal the impact of the various algorithmic improvements, described above.},
keywords = {MANET, MESH, OLSR, Performance Evaluation},
pubstate = {published},
tppubtype = {inproceedings}
}
0000
Cordero, Juan Antonio; Lou, Wei
Modeling Dynamic Resource Allocation in the Edge Conference Forthcoming
Proceedings of the 8th IFIP/IEEE International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks (PEMWN'2019). , IEEE, Forthcoming.
Abstract | BibTeX | Tags: Modeling, Performance Evaluation
@conference{Cordero2019,
title = { Modeling Dynamic Resource Allocation in the Edge},
author = {Juan Antonio Cordero and Wei Lou},
booktitle = {Proceedings of the 8th IFIP/IEEE International Conference on Performance Evaluation and Modeling in Wired and Wireless Networks (PEMWN'2019).
},
publisher = {IEEE},
abstract = {Edge computing technologies and integrated archi- tectures have been deployed to accommodate Internet traffic growth. These architectures include facilities (cloudlets, micro DCs) to cache and serve contents close to consumers. Resulting systems adapt to observed request/consumption patterns by allowing cloudlet coordination for content caching/dissemination. This paper presents a novel analytical model of transient dy- namics of the cloudlets set. The model is used to study system convergence, stability and delivered content locality. Results from this model are validated via simulations.},
keywords = {Modeling, Performance Evaluation},
pubstate = {forthcoming},
tppubtype = {conference}
}