CS 898T Mobile and Wireless Networks - Homework 4 - Name:_________________

    Assigned: Wednesday, May 5 
    Due: Monday, May 10 (in class)

    Please show all work on a separate sheet attached to this sheet.
    For each question write key points. 

    (50 points - 10 points for each question) 


    1. Describe Bluetooth networking.

 Ans: See 7.5.2.1  

    2. Describe mobile IP operation.

 Ans: 

    1) A mobile node has a home agent which is the proxy of the mobile node
       during its absence from the home network. It acquires a care-of address
       that identifies its location in the current network from the foreign
       agent.
    2) Each time a user moves the device to a different network, it acquires
       a care-of address and notify its home agent. The home agent then
       associates its home  address with its care-of address.
    3) Traffic for the mobile node is sent to the home network and forwarded
       by the home agent via tunneling mechanisms to the appropriate care-of
       address.

   
    3. Describe Celluar IP, HAWAII, and HMIPv6 and list their advantages
       and disadvantages.

 Ans: See 8.1.10

    4. Briefly Describe the mechanism, advantages, and disadvantages of     
       Indirect TCP, Snooping TCP, and M-TCP.

 Ans: See Table 9.1

    5. Describe the features and the protocol framework of WAP 2.0. 

 Ans: See 10.6