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Conclusions Re-use existing protocols as much as possible and define new functionalities only where needed Use UDP: existing, fast, & simple to use transport protocol Used by other protocols e.g. SIP commonly uses UDP, CAPWAP also uses UDP, & the IETF NETLMM Working Group also considers UDP for transport Use existing MIH (IEEE 802.21) functionalities: Provides options for ACKs, sessions & transactions management Use MIH Application Retransmission timers for reliability |