TY  - RPRT
A1  - Lhamo, Osel
A1  - Nguyen, Giang T.
A1  - Fitzek, Frank H. P.
T1  - Virtual Queues for QoS Compliance of Haptic Data Streams in Teleoperation
T2  - Würzburg Workshop on Next-Generation Communication Networks (WueWoWas'22)
N2  - Tactile Internet aims at allowing perceived real-time interactions between humans and machines. This requires satisfying a stringent latency requirement of haptic data streams whose data rates vary drastically as the results of perceptual codecs. This introduces a complex problem for the underlying network infrastructure to fulfill the pre-defined level of Quality of Service (QoS). However, novel networking hardware with data plane programming capability allows processing packets differently and opens up a new opportunity. For example, a dynamic and network-aware resource management strategy can help satisfy the QoS requirements of different priority flows without wasting precious bandwidth. This paper introduces virtual queues for service differentiation between different types of traffic streams, leveraging protocol independent switch architecture (PISA). We propose coordinating the management of all the queues and dynamically adapting their sizes to minimize packet loss and delay due to network congestion and ensure QoS compliance.
KW  - Datennetz
KW  - data plane programming
KW  - software defined network
KW  - P4
KW  - virtual queue
KW  - haptic data
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-280762
ER  - 
TY  - RPRT
A1  - Höweler, Malte
A1  - Xiang, Zuo
A1  - Höpfner, Franz
A1  - Nguyen, Giang T.
A1  - Fitzek, Frank H. P.
T1  - Towards Stateless Core Networks: Measuring State Access Patterns
T2  - Würzburg Workshop on Next-Generation Communication Networks (WueWoWas'22)
N2  - Future mobile communication networks, such as 5G and beyond, can benefit from Virtualized Network Functions (VNFs) when deployed on cloud infrastructures to achieve elasticity and scalability. However, new challenges arise as to managing states of Network Functions (NFs). Especially control plane VNFs, which are mainly found in cellular core networks like the 5G Core (5GC), received little attention since the shift towards virtualizing NFs. Most existing solutions for these core networks are often complex, intrusive, and are seldom compliant with the standard. With the emergence of 5G campus networks, UEs will be mainly machine-type devices. These devices communicate more deterministically, bringing new opportunities for elaborated state management. This work presents an emulation environment to perform rigorous measurements on state access patterns. The emulation comes with a fully parameterized Markov model for the UE to examine a wide variety of different devices. These measurements can then be used as a solid base for designing an efficient, simple, and standard conform state management solution that brings us further towards stateless core networks.
KW  - Datennetz
KW  - 5GC
KW  - VNF
KW  - SBA
KW  - measurements
KW  - MTC
Y1  - 2022
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-280770
ER  -