Computer Networking
                                             - John Heidemann

Master reference: John Heidemann, Fabio Silva, Chalermek Intanagonwiwat, Ramesh Govindan, Deborah Estrin, and Deepak Ganesan. Building Efficient Wireless Sensor Networks with Low-Level Naming. In Proceedings of the Symposium on Operating Systems Principles, pp. 146-159. Chateau Lake Louise, Banff, Alberta, Canada, ACM. October, 2001. http://www.isi.edu/~johnh/PAPERS/Heidemann01c.html

Three questions:

• What are the characteristics of the Internet architecture that allowed it to a) be robust, b) scale in at least three different dimensions. For part b), make sure you identify what kind of scaling you're talking about and why the Internet architecture made it feasible to scale in that dimension.
• What are two problems with the current Internet and how are people working to solve those problems? This will require that you look into material not covered in the lecture on the 25th, since there we only talked about problems and not solutions.
• a) What are at least two requirements of sensor networks that are different from the Intenet? b) How are the sensor network protocols we talked about designed to meet those requirements?

Additional references: Deborah Estrin, Ramesh Govindan, John Heidemann, and Satish Kumar. Next Century Challenges: Scalable Coordination in Sensor Networks. In Proceedings of the ACM/IEEE International Conference on Mobile Computing and Networking, pp. 263-270. Seattle, Washington, USA, ACM. August, 1999. http://www.isi.edu/~johnh/PAPERS/Estrin99e.html

Chalermek Intanagonwiwat, Ramesh Govindan, and Deborah Estrin. Directed Diffusion: A Scalable and Robust Communication Paradigm for Sensor Networks. In Proceedings of the ACM/IEEE International Conference on Mobile Computing and Networking, pp. 56-67. Boston, MA, USA, ACM. August, 2000. http://netweb.usc.edu/estrin/papers/diffusion-mobicom-submitted.ps

The "Embedding the Internet" section of the May 2000 issue of Communications of the ACM (volume 43, number 5).