Cellular Digital Packet Data (CDPD) - Bnrg.cs.berkeley.edu ...

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Air Link Security• Encrypted airlink yields data link confidentiality• M-ES NEI authentication by CDPD network• Authentication process based on registrationhistory– MD-IS authenticates M-ES back to its home MD-IS– NEI/ASN (Auhentication Sequence Number)/ARN(Authentication Random Number) are the authenticationcredentials– ASN incremented after each successful registration– New ARN assigned by MHF after every successful validationof credentials; obtained over encrypted link by M-ES whichstores it locally20
Network Layer Mobility:CDPD vs. Mobile IP• Home Agent– CDPD: Location Directory– Mobile IP: Configuration and Registration Table– Mobility Binding: binding between a mobile host and itsattachment agent, registration lifetime, id number, etc.• Attachment Agent– CDPD: Registration Directory– Mobile IP: Configuration and Registration TablePackets for MHrouted to HAHAHostHA encapsulatespacket and tunnelsit to FAAttachmentAgentMHFA decapsulatesinner packet anddelivers it to MH21
Page 1 and 2: CS 294-7: Cellular Digital PacketDa
Page 3 and 4: Cellular Digital Packet DataISInter
Page 5 and 6: CDPD Network ArchitectureColor Code
Page 7 and 8: CDPD Entities• Fixed End Systems
Page 9 and 10: CDPD Entities• Mobile Data Base S
Page 11 and 12: CDPD ProtocolsNetwork Layer DataNet
Page 13 and 14: CDPD Protocols• MAC Layer- Arbitr
Page 15 and 16: CDPD Protocols• Mobile Data Link
Page 17 and 18: Mobile Network RegistrationProtocol
Page 19: M-ES Channel Hopping• Initiation
Page 23 and 24: Network Layer Mobility:CDPD vs Mobi
Page 25 and 26: Network Layer Mobility:CDPD vs. Mob
Page 27 and 28: Network Layer Mobility:CDPD vs. Mob

Cellular Digital Packet Data (CDPD) - Bnrg.cs.berkeley.edu ...

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