After that, n-MAG/LMA will exchange the aggregated AAA query and reply messages with AAA server (Steps 2 and 3).
Now, LMA performs the AAA operations with AAA server for all body sensors.
1) Mutual authentication: Due to the existence of trust agreements between AAA server, ASN-GW, BS, WIF and AP, MS engages in mutual re-authentication with BS/AP in the proposed scheme on behalf of the target network.
According to Table 3, we can see that our scheme introduces the least communication overhead since the AAA server is not involved in both the WMWF and WFWM protocols whenever a VHO occurs.
Since there is no pre-established security association between the MS and [BS.sub.1], the MS should perform another full EAP authentication with the AAA server
to be connected with the target BS ([BS.sub.1]), which induces a long delay.
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We also assume there is an AAA server
in the MAP domain called AAAM, and the communication among the AAAA servers is secure, with a trust relationship.
can also be supplemented by strong authentication techniques.
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