The course project can be done in groups (maximum 3 people) or individually. Groups can comprise students from any of the participating universities.

Process includes a project proposal by the student (or group) followed by a revised proposal on the basis of instructors' feedback and a final project report. Students can propose their own projects or select one from a list of possible projects to be provided by the instructors for each of the four course modules.

Draft Project Timeline

• Feb 22, 2023 Draft Project Proposal Due
• March 01, 2023 Revised Project Proposal Due (based on instructor feedback)
• Apr 19, 2023 Final Project Report Due

Proposal Format

Write a 2 page proposal that describes:

1. The problem you plan to study
   • Be specific!!!
2. Why you think it's important
   • You should want to read this paper because...
3. Related work you have found so far
4. What you plan to do including:
   1. Specific milestones you will achieve; these serve as a baseline -- something that is evaluate-able, but not very impressive.
   2. Specific milestones you plan to achieve
   3. Specific milestones you could achieve if things go incredibly well and you find yourselves ahead of schedule; this is the list of cool things you could do building on the accomplishments of a + b.

Examples of specific milestones include: do a thorough literature survey of the problem, write code implementing A, B, C; run experiments X, Y, Z to measure 1, 2, 3; or analyze/prove the performance of system XX.

Final Report Format

The default form for a project is as a research paper of 10 to 15 pages (single column double spaced). It can be one of the following:

• A comprehensive survey of the relevant literature on the chosen project topic
• An identification and justification for a research problem with a proposed solution. Providing a practical component, such as a simulation study or a prototype implementation/experimentation is a plus.

Students (groups) who are taking both NetSoft theory and practice courses can combine their projects to address a single topic. The expected end report in this case should contain : (1) an introduction that motivates and describes the problem, and summarizes the project findings; (2) an elaborate discussion of the related works; (3) a detailed description of project contributions (i.e., architecture, algorithms, etc.); (4) evaluations of the proposed solution(s); (5) concluding remarks and possible future work. The report should not exceed 30 pages (single column double spaced).

Sample Projects

(Point of contact for the following projects will be University of Waterloo)


• Mechanisms for network slice isolation and security: Network slicing enables partitioning a shared network infrastructure into logical networks tailored to user or application requirements, including requirements for isolation and security. There may be varying levels of isolation. A network slice can be completely isolated from other slices by using dedicated NFs and network resources in all the network. The other extreme case is to share everything with other network slices. Sharing can also be defined in terms of the groups of NFs. For instance, two network slices can share RAN NFs and still use dedicated core NFs. The type of virtualization (VM or containers) and their placement on NFV infrastructure (NFVI) can also have an impact on isolation. For instance, given two VNFs belonging to two different end-to-end slices on a common NFVI, each with their own pinned CPU cores, one VNF may experience performance degradation if underlying shared processor resources (e.g., shared last level cache) is hogged by the other VNF. The aim of this project is to model how different types of NF sharing and isolation can impact slice performance in terms of latency, throughput, and reliability.

• Machine-learning based resource allocation in softwarized networks: Softwarized networks enable the deployment of network functions such as firewalls, NATs, and WAN optimizers as virtual network functions (VNFs) on commodity servers as opposed to using specialized hardware middleboxes. Very often network services require steering traffic through multiple network functions chained in a specific order, which is also known as service function chains (SFCs). Softwarized networks provide the flexibility to deploy these SFCs anywhere in the network where computing and switching equipment are available (e.g., central offices, edge data-centers, point-of-presence). In order to meet the quality of service (QoS) requirements (e.g., bandwidth) the constituent VNFs of an SFC are typically peak provisioned. Since network traffic exhibits a bursty nature, peak provisioning of the VNFs may lead to idle infrastructure resources during low-utilization periods. This project aims at taking a machine learning (ML) approach to provision resources for these VNFs. The project involves devising an ML models for predicting resource usage of co-located VNFs from different SFCs on different servers and proactively scale up or down resources (e.g., increasing/decreasing CPU shares through cgroup or starting a new instance for horizontal scale out) based on the prediction.

• Adaptive monitoring for SDN: Accurate network monitoring data is typically collected at the expense of increased overhead (e.g., network bandwidth, switch memory etc.). This monitoring overhead is expected to further increase with the flexibility brought about by network softwarization, resulting into significantly more monitoring probes deployed in the network for various monitoring purposes. This stresses the need for monitoring algorithms that leave minimal resource footprint in the network without sacrificing monitoring data accuracy. This project involves the design and implementation of a monitoring application that leverages SDN programmability to collect/sample flow data and/or statistics. To better understand the tradeoff between monitoring accuracy and overhead, we need to analyze the impact of varying monitoring frequencies and granularities on different performance metrics such as accuracy, runtime, cost, and computational overhead. The project goal is then to design, implement, and evaluate an algorithm to automatically adapt monitoring frequencies and granularities according to network conditions and current accuracy requirements. In this regard, machine learning techniques can be useful to learn and infer appropriate monitoring frequencies while taking into account current network condition.

• Software-Defined Security: This project involves leveraging SDN to detect and mitigate security threats (e.g., intrusion detection, DDoS attack etc.) made to a network. The global network view provided by SDN facilitates the collection of different types of monitoring data such as network usage, context of the flows etc. A security application can be thought of as a control application that leverages the global network view available at the control plane. The security application can employ data analytics techniques/Machine Learning to uncover unusual patterns in network usages and classify them into possible security threats (e.g., intrusion detection, DDoS attack etc.). Once such an attack is detected the security application should take mitigation steps such as block traffic matching certain flow signature, re-route traffic to a deep packet inspection box located at a fixed location in the network etc. To do so, the application can leverage the APIs provided by the controller to install necessary flow rules in the switches.
  
• Federated learning for the Open Radio Access Network (RAN): The Open RAN network is an emerging technology that seeks to revolutionize the communication network industry by promoting collaboration among various RAN providers. One of the significant challenges in Open RAN is the allocation of radio resources and RAN slicing, which requires precise and real-time information about the network. This information is commonly stored in private datasets owned by different Mobile Virtual Network Operators (MVNOs), making it challenging to aggregate and utilize for resource allocation. The competition among MVNOs often impedes their willingness to share data for privacy reasons. This project proposes using Federated Learning (FL) to address this challenge. FL is a machine learning approach that enables the cooperative training of models across multiple devices to build a global model, preserving the privacy of the data. The project aims to implement FL in the field of Open RAN by training machine learning models on each MVNO according to its users' requirements, aggregating the models to form a federated model, and utilizing this model to optimize the Open RAN network's performance through efficient radio resource allocation.
  
• Trustworthy and interpretable machine learning for networking: The integration of machine learning (ML) in networking has shown great potential for automating network management and optimizing network performance. However, it is essential to ensure that the ML models used in networking are trustworthy and interpretable. Interpretability is needed to understand the decisions made by ML models and to ensure that they align with network policies and regulations. Moreover, ML models should be able to handle real-world challenges such as robustly satisfying critical constraints and generalizing to unseen scenarios without the need for additional training. The aim of this project is to design and develop a trustworthy and interpretable ML model for a networking task such as anomaly detection, traffic classification, and resource optimization. This can involve utilizing techniques like feature selection, graph neural networks, model interpretability, or Explainable AI.