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Assignment Details             

• Course Code: COMP8250
• Course Title: mobile data networks
• Referencing Styles : IEEE
• Words : 2,000
• University: Macquarie University
• Country: AU

Task:

Assignment Type: Problem Solving (Individual Assignment)

The purpose of the problem-solving assignment is to help the students to get accustomed to dealing with real world problem situations/issues. It is designed to help students analyze a particular problem and find its best solution.

Questions

1.Explain why the vulnerable time in ALOHA depends on the frame transmission time (Tfr), whereas in CSMA it depends on the frame propagation time (TP).

2. Highlight and explain the key limitations of the Binary Exponential Back-off (BEB) algorithm that is used in Carrier-Sense Multiple Access with Collision Avoidance (CSMA/CA). Explain how the Multiplicative Increase and Linear Decrease (MILD) algorithm used in the Multiple Access with Collision Avoidance for Wireless (MACAW) protocol can address these deficiencies. Explain why the MILD algorithm may also suffer from performance degradation.

3. Consider a novel Mobile IP scheme in which a mobile station announces its permanent (home) IP address to agents in foreign networks. These agents, in turn, announce this information to other routers using their regular routing protocol update messages. Compare and contrast this scheme with IETF Mobile IP scheme.

4. An organization has deployed a campus network using cellular IP. The Cellular IP network extends the wired infrastructure of the campus. The gateways (GW) in Cellular IP connect their respective wireless segments to the wired segment. Each Base Station (BS) in the wireless segment provides layer 3 functionality (in other words, they act as IP forwarding engines). The 2 campus network supports multicast routing. This campus network strictly adheres to the Cellular IP standard. Assume that this campus network deploys Source Based Multicast Routing scheme – a protocol that builds source-based multicast distribution trees