The network calculus has established as a versatile methodology for the queueing analysis of resource sharing based systems. Its prospect is that it can deal with problems that are fundamentally hard for alternative methodologies, based on the fact that it works with bounds rather than striving for exact solutions. The high modelling power of the network calculus has been transposed into several important applications for network engineering problems, traditionally in the Internet’s Quality of Service proposals IntServ and DiffServ, and more recently in diverse environments such as wireless sensor networks, switched Ethernets, or Systems-on-Chip.

The goal of this workshop is to bring together researchers with an interest in the theory of network calculus as well as those who want to apply existing results in new applications. The workshop will serve to promote the network calculus theory to researchers with an interest in applied queueing models for data communication.

Workshop Organizers

Florin Ciucu, University of Warwick, UK

Markus Fidler, Leibniz University Hannover, DE

Jens Schmitt, University of Kaiserslautern, DE

Workshop Registration

The workshop is integrated into the MMB/DFT 2014 conference and we suggest to also take registering to this event into consideration, but a WoNeCa-only registration is also possible here.

Format of the Workshop

The idea is to have an informal meeting with presentations of recent work in the context of network calculus (theory, applications, tool support) and gather as many network calculus experts as possible to discuss about the future development of the theory and its application opportunities. Hence, there are no written papers and everyone can present his/her "hottest" recent research on network calculus.

Workshop Program

8:30-8:45  Opening
8:45-10:00 Session 1: Analysis of Wireless Networks
  Amr Rizk: Aspects on the Flow-Level Performance of Wireless Fading Channels (slides)
  Hussein Al-Zubaidy: Service Characterizations and Performance Analysis for Multi-Hop Multiaccess Wireless Channels (slides)
  James Gross: Effective Service Capacity of Cellular Systems (slides)
10:00-10:30 Coffee Break
10:30-11:20 Session 2: Deterministic Analysis 1


Yuming Jiang: Performance Analysis of Multiclass FIFO: Motivation, Difficulty and a Network Calculus Approach (slides)
  Marc Boyer: Accuracy of Network calculus for Embedded Systems: Successes and Challenges (slides)
11:20-12:20 Perspective Talk
  Jörg Liebeherr: Getting a Grip on Network Delays (slides)
12:20-13:20 Lunch Break
13:20-14:35 Session 3: Stochastic Analysis
  Hao Wang: A Network Calculus Modeling Flow Transformations with Variable Packet Lengths (slides)
  Felix Poloczek: Martingale-Envelopes: Theory and Applications (slides)
  Michael Beck: Towards a Statistical Network Calculus - Dealing with Uncertainty in Arrivals (slides)
14:35-15:00 Coffee Break
15:00-16:40 Session 4: Deterministic Analysis 2 and TCP
  Mark Schmidt: Application of Network Calculus to Multicast Flows in Ethernet Networks Supporting IEC61850
  Steffen Bondorf: Cross-Traffic Arrival Bounds (slides)
  Ulrich Klehmet: Strictness of Rate-Latency Service Curves (slides
  Fabien Geyer: Advances in TCP Network Calculus – Handling Crosstraffic and ON/OFF Flows
16:40-16:45 Closing


Topics of Interest

The topics of this workshop are related to fundamental aspects as well as applications of network calculus. The following list of topics is non-excluding:

Deterministic and stochastic network calculus, e.g.

  • traffic and service models
  • general topologies
  • numerical tightness

Feedback systems, e.g.,

  • TCP network calculus
  • window flow control
  • retransmission-based systems

Loss systems, e.g.,

  • bounded queues
  • wireless links

Aggregate multiplexing, e.g.,

  • optimization-based approaches
  • stochastic case

Data transformation, e.g.,

  • end-to-end analysis
  • in-network processing
  • network coding

Relation to other theories, e.g.,

  • queueing theory
  • discrete event dynamic systems

New applications, e.g.,

  • real-time calculus
  • avionic networks
  • mission-critical networks
  • the power grid
  • wireless sensor networks

Tool support, e.g.,

  • numerical problems
  • numerical approximations
  • implementation experience

In conjunction with MMB & DFT 2014

17th International GI/ITG Conference on “Measurement, Modelling and Evaluation of Computing Systems” and “Dependability and Fault-Tolerance”

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