The media dependent IEs currently include:
{ Cipher_Suites, Authentication_Methods, Cost (free/not free),
IP_Version, Data_Rates, QoS, Neighbor_Maps }
In my analysis, Cipher_Suites, Authentication_Methods, Data_Rates, QoS
are questionable. I agree on representing Cost as a binary value
(free or not free).
[Stefano] Authentication_Methods is needed. How does the UE know which methods are supported and allowed? The UE will have to try and fail to find out. Even if an AP implements WPA and WPA2, it does not mean the network enables/supports all authentication mechanisms.
[Subir] Can we capture all these in a more generic "Security"
type IE? In that case, we may avoid mutiple IEs that are related to
security (e.g., Cipher-Suites, Authentication_Methods for lower layers
and NAT, VPN for higher layers). This may be true for QoS as well.
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