@inproceedings{Senk2024:BringBack,

title = {Bring Functions Back to the Network: A Measurement Study},

author = {Stefan Senk and Marian Ulbricht and Hosein K. Nazari and Tung V. Doan and Giang T. Nguyen and Frank H. P. Fitzek},

year  = {2024},

date = {2024-11-05},

urldate = {2024-11-01},

booktitle = {IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN)},

address = {Natal, Brazil},

abstract = {Network Function Virtualization (NFV) is envisioned to provide the 

foundation for a dynamic, high-performance multi-layer network 

architecture. With NFV, running network functions on general-purpose 

hardware is supposed to lower network latency due to reduced propagation 

delay. The trade-off, however, is in impaired reliability and increased 

processing latency, which could negatively affect Quality of Service (QoS) 

and Quality of Experience (QoE). We investigate the trade-off via a 

comprehensive measurement study exploiting a high-precision measurement 

method on a carrier-grade Cisco Catalyst 9500 Series switch, which provides 

enhanced computing capability via lightweight containerization. Baseline 

results on packet forwarding latency confirm that software-based forwarding 

is inferior to the hardware pendant. Subsequently, we deploy a more 

realistic application with an example for network coding and introduce a 

new metric, re-coding opportunities. Our study identifies a superior 

performance of generic hardware, but also shows advantages of in-network 

computing for latency-tolerable scenarios.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Senk24:FlexTac,

title = {5G-TSN FlexTac: Experience A New Touch},

author = {Stefan Senk and Tobias Scheinert and Hosein K. Nazari and How-Hang Liu and Giang T. Nguyen and Frank H. P. Fitzek},

doi = {10.1109/INFOCOMWKSHPS61880.2024.10620809},

year  = {2024},

date = {2024-05-20},

urldate = {2024-05-20},

booktitle = {IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)},

pages = {1-3},

address = {Vancouver, BC, Canada},

abstract = {The Tactile Internet (TI) is a revolutionary communication platform that 

enables perceived real-time interaction between humans and machines, such 

as in remote surgery. However, realizing TI is a complex challenge in 

wireless networks like the 5G and beyond 5G mobile communication systems. 

5G-TSN is an approach adopting the determinism of Time-Sensitive 

Networking (TSN) into 5G systems. This demo presents 5G-TSN FlexTac, a 5G 

and TSN combination, to achieve ultra-low latency for real-time tactile 

experiences. The demo showcases its effectiveness in providing immersive 

haptic interactions, opening avenues for virtual reality and remote surgery 

applications. The user can experience the Tactile Internet with haptic 

feedback through a cyber-physical input device. Furthermore, the user can 

understand the need for traffic prioritization by investigating the effects 

of different QoS settings in the 5G-TSN FlexTac testbed.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Hosein20235gtsn,

title = {Bridging the Gap: 5G-TSN Integration for Industrial Robotic Communication},

author = {Hosein K. Nazari and Johannes Abicht and Stefan Senk and How-Hang Liu and Tobias Scheinert and Giang T. Nguyen and Frank H. P. Fitzek},

url = {https://ieeexplore.ieee.org/document/10477097},

year  = {2023},

date = {2023-10-02},

urldate = {2023-01-01},

booktitle = {European Wireless (EW)},

address = {Rome, Italy},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Hosein2023IJSR,

title = {Incremental Joint Scheduling and Routing for 5G-TSN Integration},

author = {Hosein K. Nazari and Mehmet Akif Kurt and How-Hang Liu and Stefan Senk and Giang T. Nguyen and Frank H. P. Fitzek},

url = {https://ieeexplore.ieee.org/document/10477098},

year  = {2023},

date = {2023-10-02},

urldate = {2023-01-01},

booktitle = {European Wireless (EW)},

address = {Rome, Italy},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Nguy2301:Open,

title = {Open-Source Testbeds for Integrating Time-Sensitive Networking with 5G and beyond},

author = {Stefan Senk and Hosein K. Nazari and How-Hang Liu and Giang T. Nguyen and Frank H. P. Fitzek},

doi = {10.1109/CCNC51644.2023.10060159},

year  = {2023},

date = {2023-01-01},

urldate = {2023-01-01},

booktitle = {CCNC 2023 WKSHPS: 3rd International Workshop on Communication and 

Networking for Swarms Robotics (ROBOCOM'23) (ROBOCOM 2023)},

address = {Las Vegas, USA},

abstract = {Ünmanned Aerial Vehicles (UAVs) have developed substantially in various 

practical use cases and require reliable wireless connections. 

Cellular-connected UAVs will benefit from ultra-reliable and low-latency 

communication (URLLC) in 5G and beyond networks. Their integration with 

Time-Sensitive Networking (TSN) via campus solutions can provide swarm 

robotics wireless links with deterministic behavior, flexibility, and 

coverage. Reliable yet cost-effective and flexible evaluation of the 

integration is still challenging for academia and industry. We focus on 

open-source testbeds due to their maturity and transparency in verifying 

evaluation results. Subsequently, we systematically survey and categorize 

testbeds in the literature that use commercial-off-the-shelf hardware. Our 

study outlines options for building a full-fledged testbed for integrating 

TSN with 5G and beyond for research and development. This study initiates 

one of the first steps toward facilitating future research."},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Schw2310:Codingb,

title = {Improving Reliability for Cloud-native 5G and Beyond using Network Coding},

author = {Osel Lhamo and Tung V. Doan and Elif Tasdemir and Mahdi Attawna and Stefan Senk and Frank H. P. Fitzek and Giang T. Nguyen},

year  = {2023},

date = {2023-01-01},

urldate = {2023-01-01},

booktitle = {2023 IEEE Conference on Network Function Virtualization and Software Defined Networks (NFV-SDN) (NFV-SDN'23)},

address = {Dresden, Germany},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Senk2206:Flexible,

title = {Flexible Measurement Testbed for Evaluating Time-Sensitive Networking in Industrial Automation Applications},

author = {Stefan Senk and Marian Ulbricht and Javier Acevedo and Giang T. Nguyen and Patrick Seeling and Frank H. P. Fitzek},

doi = {10.1109/NetSoft54395.2022.9844050},

year  = {2022},

date = {2022-06-26},

urldate = {2022-06-26},

booktitle = {2022 IEEE 8th International Conference on Network Softwarization (NetSoft) 

(NetSoft 2022)},

address = {Milan, Italy},

abstract = {Deterministic communications are required for industrial environments, yet 

their realization is a challenging task. Time-Sensitive Networking (TSN) is 

intended to enable deterministic communication over inexpensive Ethernet 

networks. Standardized by the IEEE TSN working group, TSN enables precise 

control of time synchronization, traffic shaping, reliability enhancements, 

and network administration to answer the demands of industrial control 

applications. Subsequently, there is a significant need to enable turnkey 

research and 

implementation efforts. However, a current lack of open-sourced testbed 

implementations to investigate and study the behavior of TSN network 

devices limits verification to simulation and theoretical models. We 

introduce a publicly available, flexible, and open-sourced measurement 

testbed for evaluating TSN in the context of industrial automation 

applications to address the need to perform real-world measurements. In 

this contribution, we describe our testbed combining 

Commercial-Off-The-Shelf (COTS) hardware and existing open-source tools as 

a platform for in-depth evaluation of TSN devices. Providing detailed TSN 

backgrounds, we describe an in-depth performance analysis for our 

implementation. For a common Tactile Internet scenario, we observe an 

accuracy of close to 5 ns achievable with our publicly available COTS 

setup.},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Senk21:CampusTestbed,

title = {5G NSA and SA Campus Network Testbeds for Evaluating Industrial Automation},

author = {Stefan Senk and Sebastian A. W. Itting and Jennifer Gabriel and Christopher Lehmann and Thomas Höschele and Frank H. P. Fitzek and Martin Reisslein},

url = {https://ieeexplore.ieee.org/document/9657093},

year  = {2021},

date = {2021-11-10},

urldate = {2021-11-10},

booktitle = {European Wireless 2021},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}