, . . , . , UE. . . UMTS (. 23.9).
1 - RRC (Radio Resource Control). SC (Connection Setup Complete) RNC - UE RNC. 1 . 23.9 RRC Connection Request ( ) Connection Setup ( ). RRC UE-RNC.
1 UE , UIA (UMTS integrity algorithm) UEA (UMTS encryption algorithm). 1 , START 20 . RNC RRC. COUNT-1 , .. RRC ( UE RNC). START 20 HFN (Hyper Frame Number).
2 - UE . , LU (Local Update). , LAI USIM LAI, UE. .
. 23.9.
3 (UIA/UEA), (VLR/SGSN) UE-RNC. 3 (IK) (). 3 (Security Mode Command) RANAP (Radio Access Network Application Part) 7.
. 23.9 RNC UIA/UEA UE .
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. RR (Radio Resource Control), .. UE RNC. 4 . 23.9 RRC.
UMTS , . 4 MAC-I (Message Authentification Code for Integrity), . 23.10. MAC-I KASUMI IK.
. 23.10. MAC-I
MAC-I f9, IK. MAC-I 32- , RRC. XMAC-I RRC, MAC-I . MAC-I XMAC-I , , , . .
RRC IK f9 :
COUNT-I (32 ): RRC. COUNT-I 20 HFN, 8 0 4 RRC.
FRESH: , RNC. COUNT-I FRESH .
( ).
4 RRC ( , Security Mode Command) UE UIA/UEA. UE XMAC-I, MAC-I 4. 4 .
5 RRC Security Mode Complete (" " ) , UE . 5 RNC , .. .
6 RNC . (Security Mode Complete) RANAP. .
22.3.3, TMSI/P-TMSI (VLR/SGSN) . GSM TMSI - MS . UMTS. . 23.11 / UMTS.
/ (, TMSI/P-TMSI, LAI) . . 2 . ( ) , f8. (. 23.3..).
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. 23.11. / UMTS
f8 :
;
Count-C , Count-I ;
( );
( );
. , , , 16 .
Count-C . Count-C . , . ( ) . 2 2 . . , ' .
UE RNC . , RNC UE Count-C. Count- UE Count-C RNC, RRC .
23.3. UMTS
