diff --git a/library/L3_Common.ttcn b/library/L3_Common.ttcn
index 5b36056..2b39621 100644
--- a/library/L3_Common.ttcn
+++ b/library/L3_Common.ttcn
@@ -7,8 +7,11 @@
 type record AuthVector {
 	OCT16 rand,
 	OCT4 sres,
-	OCT8 kc
-	/* FIXME: 3G elements */
+	OCT8 kc,
+	OCT16 ik,
+	OCT16 ck,
+	OCT16 autn,
+	OCT8 res
 }
 
 private function f_rnd_oct(integer len) return octetstring {
@@ -28,6 +31,15 @@
 	return vec;
 }
 
+function f_gen_auth_vec_3g() return AuthVector {
+	var AuthVector vec := f_gen_auth_vec_2g();
+	vec.ik := f_rnd_oct(16);
+	vec.ck := f_rnd_oct(16);
+	vec.autn := f_rnd_oct(16);
+	vec.res := f_rnd_oct(8);
+	return vec;
+}
+
 /* 3GPP TS 23.003 2.6 */
 type enumerated TlliType {
 	TLLI_LOCAL,