Kommunikationssysteme (Communication Systems) (WS 2019/20)
The results of the written exam can be found on meinCampus.
The exam inspection (Klausureinsichtnahme) is going to take place on 30 Oct. 2020 from 10:30 am to 11:00 am in lecture hall H5 (electrical engineering building).
Keep enough distance and wear a face mask.
The exam inspection (Klausureinsichtnahme) is going to take place on 30 Oct. 2020 from 10:30 am to 11:00 am in lecture hall H5 (electrical engineering building).
Keep enough distance and wear a face mask.
Details
Type of course | Lecture (2 SWS) + exercises (2 SWS) |
ECTS credits | 2,5 + 2,5 |
Language | English |
Lecture | Tuesday, 12:15 pm – 01:45 pm, room 02.134-113 UnivIS |
Exercises | Monday, 10:15 am – 11:45 am, room 04.158-113 UnivIS Monday, 12:15 pm – 01:45 pm, room 04.158-113 UnivIS Wednesday, 08:15 am – 09:45 am, room 04.158-113 UnivIS Wednesday, 12:15 pm – 01:45 pm, room 04.158-113 UnivIS (optional!) |
The basic aspects of IP based networks has been explained in the lecture Rechnerkommunikation. This advanced lecture Communication Systems provides insight into other networking techniques. It includes circuit switching in telephone and optical networks, virtual circuit switching (e.g. MPLS), multimedia communications in packet switched networks (streaming, RTP. H.323, SIP, Multicast, IPTV), quality of service in packet switched networks (Integrated Services, RSVP, Differentiated Services, Active Queue Management, Policing, Scheduling), wireless and mobile communication (GSM, UMTS, LTE, Wimax, WLAN, Bluetooth, sensor nets, Mobile IP) and industrial communication in automation networks. The exercises include practical assignments in a lab environment: the lab contains several IP routers, switches and hosts, IP phones and softphones for VoIP communication. All these devices will be configured and tested. An additional lab consists of an SDR-based LTE base station and several mobile phones. It allows to observe and understand the architecture and communication messages on different layers of the protocol stack.
- Knowledge of technologies in circuit and packet switching in wireline and wireless / mobile networks
- Knowledge of network system design
- Practical experience in configuring an IP switch router network with multimedia traffic as well as programming interconnected embedded systems
Textbook: Kurose, Ross, “Computer Networking: A Top-Down Approach Featuring the Internet”, 4th Ed., Addison Wesley, 2007
Lecture Slides
- Organization
- Introduction
- Circuit Switching I (Update 28/10/2019)
- Circuit Switching II
- Multimedia Communications (Update 03/12/2019)
- Quality of Service (Update 03/12/2019)
- Wireless I (Update 13/01/2020)
- Wireless II
- Wireless III (Update 04/02/2020)
Exercises
The first exercise class is going to take place on 21st Oct. 2019. You have to sign up via Waffel from 15th Oct. 2019 1:50 pm until 18th Oct. 2019 1:00 pm.
As the number of devices in our lab is limited, the maximum number of students per exercise class is 12.
The exercise class on Wednesdays at 12:15 pm is optional and will only take place if the total number of students is high enough.
As the number of devices in our lab is limited, the maximum number of students per exercise class is 12.
The exercise class on Wednesdays at 12:15 pm is optional and will only take place if the total number of students is high enough.
Exercise Downloads
- 21/10/2019, 23/10/2019: Start of the exercise classes (exercise sheet 1)
- Distribution of logins and group formation
- Exercise sheet 1
- Overview of lab configuration
- 28/10/2019, 30/10/2019: Switch/PC Configuration and Monitoring (exercise sheet 2)
- 04/11/2019, 06/11/2019: Router configuration (exercise sheet 3)
- 11/11/2019, 13/11/2019: XORP and multicast (exercise sheet 4)
- Exercise sheet 4 (first part: exercise 4.1)
- XORP website
- Alternative link to XORP documentation
- Multicast theory
- More information about multicast
- 18/11/2019, 20/11/2019: XORP and multicast (exercise sheet 4 cont’d)
- Continuation of exercise sheet 4 (second part: exercise 4.2)
- Multicast with Cisco routers
- Stubs for Java multicast sender/receiver
- 25/11/2019, 27/11/2019: VoIP (exercise sheet 5a), theory for homework 1
- Exercise sheet 5a
- List of Asterisk resources
- Variables in Asterisk
- MPLS and dimensioning theory
- Homework 1 (submission until 09th/11th December 2019)
- 02/12/2019, 04/12/2019: No exercise class
- 09/12/2019, 11/12/2019: Review and correction of homework 1
- 16/12/2019, 18/12/2019: QoS (exercise sheet 5b), theory for homework 2
- Exercise sheet 5b
- Policing and scheduling theory
- Homework 2 (submission until 13th/15th January 2020)
- 06/01/2020, 08/01/2020: No exercise class (public holiday on Monday)
- 13/01/2020, 15/01/2020: Review and correction of homework 2
- 20/01/2020, 22/01/2020: LTE lab (exercise sheet 6)
- LTE theory slides
- Exercise sheet 6
- Configuration files enb.conf and epc.conf
- 27/01/2020, 29/01/2020: LTE lab continued (exercise sheet 7)
- Exercise sheet 7
- Wireshark pcap files enb.pcap and epc.pcap
- 03/02/2020, 05/02/2020: No exercise class