Page 37 - Mobile Computing
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                       o  TCP cannot be changed fundamentally due to the large base of
                          installation in the fixed network,
                                TCP for mobility has to remain compatible
                       o  The basic TCP mechanisms keep the whole Internet together


               Classical TCP Improvements

                     Indirect TCP (I-TCP)

                     Snooping TCP
                     Mobile TCP

                     Fast retransmit/fast recovery
                     Transmission/time-out freezing

                     Selective retransmission
                     Transaction-oriented TCP



               Indirect TCP (I-TCP)




                                        Access Point
                                       (foreign agent)

                                                                         ‘Wired’ Internet







           Mobile Host



                                                                                       Standard TCP
                                 ‘Wireless’ TCP




                         Socket and Stage migration after handover of a Mobile Host
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