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AIR INTERFACE FOR FIXED BROADBAND WIRELESS ACCESS SYSTEMS

IEEE Std 802.16-2001

DSD-Remote

Begin

DSD-REQ

Disable service flow

DSD

Succeeded

DSD-RSP

Start T10 Timer

Save transmitted

DSD-RSP

DSD-Remote

Holding Down

Figure 96—DSD—Remotely initiated transaction begin state flow diagram

7. Privacy sublayer

Privacy provides subscribers with privacy across the fixed broadband wireless network. It does this by encrypting connections between SS and BS.

In addition, Privacy provides operators with strong protection from theft of service. The BS protects against unauthorized access to these data transport services by enforcing encryption of the associated service flows across the network. Privacy employs an authenticated client/server key management protocol in which the BS, the server, controls distribution of keying material to client SS. Additionally, the basic privacy mechanisms are strengthened by adding digital-certificate -based SS authentication to its key management protocol.

Copyright © 2002 IEEE. All rights reserved.

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