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S-38.149 Postgraduate Course in Teletraffic Theory

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Fall 2002 course: preliminary information

Announcements:

Medium Access Control (MAC) schemes.

Topic: In Fall 2002, the "Post graduate course in Teletraffic theory" will deal with MAC schemes. In this course, packet based MAC schemes, with applications to TDMA will be discussed. Such schemes find applications to other multiple access schemes, for example, CDMA and OFDM also.

The course will be conducted by Docent Shyam Chakraborty.

Material: The course will be based on the following books:

Status: The present course can be included in postgraduate studies on Teletraffic Theory.

To whom: The course is primarily meant for postgraduate students of teletraffic theory having an interest in understanding the performance analysis and dimensioning of communication networks. This time the aim is to learn and understand medium access control schemes, and their applications to a number of practical situations.

Prerequisites: The courses S-38.143 (Queueing Theory) and S-38.141 (Teletraffic Theory) are recommended.

Organisation: The course will be arranged as an intensive seminar consisting of two periods:

  1. The course starts with a self-study "Getting Familiar with MAC Protocols" -period, during which the students are supposed to read (and understand) the specified topics from the books mentioned above. This phase ends with an examination, to be held on 14.10.2002.
  2. The students are also given the subjects and a list of related material (i.e., recent research papers), from which they are supposed to prepare their seminar reports and presentations. The second period terminates by a seminar session, during which the students give their presentations. Depending on the number of participants, the seminar session will take either one day (Saturday 23.11.2002) or two days (Friday-Saturday 22-23.11.2002). The working language is English.
Completion: To pass the course, each participant should
  1.  pass the examination,
  2. write a report on the selected subject,
  3. give a presentation on the selected subject, and
  4. act as an opponent for one presentation.
Examination: The (first) examination will be held on
The examination will be based on the following topics (taken from the textbooks mentioned above):
    1. Fixed assignment multiple access: FDMA and TDMA (CDMA will not be considered in general). General concepts of Polling (details of token ring or bus networks will not be considered in general). Delay distributions.
    2. Contention based multiple access: ALOHA and slotted ALOHA (over a single channel). S-ALOHA for finite users. Concept of offered load and throughput. Expected delay. Instability and stabilisation of S-ALOHA. Contention resolution. The Urn scheme. Binary exponential backoff (BEB). Practical applications and aspects of S-ALOHA (e.g., collision identification in different environments)
    3. Drawabcks of S-ALOHA: multi-slot messages: the carrier sense multiple access (CSMA) group of protocols, without and with collision detection (CSMA/CD) (unslotted versions are not considered). CSMA/CD with BEB.
    4. R-ALOHA.


    In case of any ambiguity, the instructor of the course can be contacted freely over e-mail. In Spring 2003, there will be two retrial examinations for those who do not pass the first examination.

Seminar subjects and the related material: See page Subjects.

Seminar session: The seminar session will be held on:

The detailed schedule of the seminar session will appear on page Schedule.
Reports: Each student shall make a self-contained report on his own topic (looking like a conference paper). The detailed instructions for the structure and layout of the report are given later on page Instructions. The reports should be ready by 15.11.2002 (one week before the seminar session).

Presentations: The written report is accompanied by a presentation given by the student during the seminar session. Each presentation should last 60 min, which is followed by a 15-minute discussion, during which the opponent should review the report and the presentation, and other participants will ask questions. It is essential that the presentations are well prepared and supported by high quality overhead material (clear handwriting allowed). The main emphasis should be on understanding and clarity.

Credits: This course will be worth of 5 credits.

Grading: The grading with the usual marks (1-5) will be based on:

        Examination:                                   60%
        Report + presentation:                    30%
        Comments as opponent                  10%
Entry: Announce your participation to the exam (14.10.2002) through WWW-TOPI, which is available for all students having a license to the university computers. (Note: The course WWW-TOPI pages will be updated for the fall 2002 course in the beginning of the autumn term.) 

    Here you can find some details about the course:


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