diff --git a/33128/r18/TS33128Payloads.asn b/33128/r18/TS33128Payloads.asn
index 9c2f70c92d5947bddd39b990af449b532b705ab5..1349a61cf9ffa99240abfbff05dcaf1e804fa38d 100644
--- a/33128/r18/TS33128Payloads.asn
+++ b/33128/r18/TS33128Payloads.asn
@@ -1352,23 +1352,27 @@ AMFRegistration ::= SEQUENCE
     equivalentPLMNList              [23] PLMNList OPTIONAL,
     fiveGMMCapability               [24] FiveGMMCapability OPTIONAL,
     initialRANUEContextSetup        [25] InitialRANUEContextSetup OPTIONAL,
-    mUSIMUERequestType              [26] MUSIMUERequestType OPTIONAL
+    mUSIMUERequestType              [26] MUSIMUERequestType OPTIONAL,
+    unavailabilityPeriodDuration    [27] UnavailabilityPeriodDuration OPTIONAL,
+    fiveGSUpdateType                [28] FiveGSUpdateType OPTIONAL,
+    uEAreaIndication                [29] UEAreaIndication OPTIONAL
 }
 
 -- See clause 6.2.2.2.3 for details of this structure
 AMFDeregistration ::= SEQUENCE
 {
-    deregistrationDirection     [1] AMFDirection,
-    accessType                  [2] AccessType,
-    sUPI                        [3] SUPI OPTIONAL,
-    sUCI                        [4] SUCI OPTIONAL,
-    pEI                         [5] PEI OPTIONAL,
-    gPSI                        [6] GPSI OPTIONAL,
-    gUTI                        [7] FiveGGUTI OPTIONAL,
-    cause                       [8] FiveGMMCause OPTIONAL,
-    location                    [9] Location OPTIONAL,
-    switchOffIndicator          [10] SwitchOffIndicator OPTIONAL,
-    reRegRequiredIndicator      [11] ReRegRequiredIndicator OPTIONAL
+    deregistrationDirection       [1] AMFDirection,
+    accessType                    [2] AccessType,
+    sUPI                          [3] SUPI OPTIONAL,
+    sUCI                          [4] SUCI OPTIONAL,
+    pEI                           [5] PEI OPTIONAL,
+    gPSI                          [6] GPSI OPTIONAL,
+    gUTI                          [7] FiveGGUTI OPTIONAL,
+    cause                         [8] FiveGMMCause OPTIONAL,
+    location                      [9] Location OPTIONAL,
+    switchOffIndicator            [10] SwitchOffIndicator OPTIONAL,
+    reRegRequiredIndicator        [11] ReRegRequiredIndicator OPTIONAL,
+    unavailabilityPeriodDuration  [12] UnavailabilityPeriodDuration OPTIONAL
 }
 
 -- See clause 6.2.2.2.4 for details of this structure
@@ -1381,29 +1385,33 @@ AMFLocationUpdate ::= SEQUENCE
     gUTI                        [5] FiveGGUTI OPTIONAL,
     location                    [6] Location,
     sMSOverNASIndicator         [7] SMSOverNASIndicator OPTIONAL,
-    oldGUTI                     [8] EPS5GGUTI OPTIONAL
+    oldGUTI                     [8] EPS5GGUTI OPTIONAL,
+    uEAreaIndication            [9] UEAreaIndication OPTIONAL
 }
 
 -- See clause 6.2.2.2.5 for details of this structure
 AMFStartOfInterceptionWithRegisteredUE ::= SEQUENCE
 {
-    registrationResult          [1] AMFRegistrationResult,
-    registrationType            [2] AMFRegistrationType OPTIONAL,
-    slice                       [3] Slice OPTIONAL,
-    sUPI                        [4] SUPI,
-    sUCI                        [5] SUCI OPTIONAL,
-    pEI                         [6] PEI OPTIONAL,
-    gPSI                        [7] GPSI OPTIONAL,
-    gUTI                        [8] FiveGGUTI,
-    location                    [9] Location OPTIONAL,
-    non3GPPAccessEndpoint       [10] UEEndpointAddress OPTIONAL,
-    timeOfRegistration          [11] Timestamp OPTIONAL,
-    fiveGSTAIList               [12] TAIList OPTIONAL,
-    sMSOverNASIndicator         [13] SMSOverNASIndicator OPTIONAL,
-    oldGUTI                     [14] EPS5GGUTI OPTIONAL,
-    eMM5GRegStatus              [15] EMM5GMMStatus OPTIONAL,
-    sORTransparentContainer     [16] SORTransparentContainer OPTIONAL,
-    uEPolicy                    [17] UEPolicy OPTIONAL
+    registrationResult            [1] AMFRegistrationResult,
+    registrationType              [2] AMFRegistrationType OPTIONAL,
+    slice                         [3] Slice OPTIONAL,
+    sUPI                          [4] SUPI,
+    sUCI                          [5] SUCI OPTIONAL,
+    pEI                           [6] PEI OPTIONAL,
+    gPSI                          [7] GPSI OPTIONAL,
+    gUTI                          [8] FiveGGUTI,
+    location                      [9] Location OPTIONAL,
+    non3GPPAccessEndpoint         [10] UEEndpointAddress OPTIONAL,
+    timeOfRegistration            [11] Timestamp OPTIONAL,
+    fiveGSTAIList                 [12] TAIList OPTIONAL,
+    sMSOverNASIndicator           [13] SMSOverNASIndicator OPTIONAL,
+    oldGUTI                       [14] EPS5GGUTI OPTIONAL,
+    eMM5GRegStatus                [15] EMM5GMMStatus OPTIONAL,
+    sORTransparentContainer       [16] SORTransparentContainer OPTIONAL,
+    uEPolicy                      [17] UEPolicy OPTIONAL,
+    unavailabilityPeriodDuration  [18] UnavailabilityPeriodDuration OPTIONAL,
+    fiveGSUpdateType              [19] FiveGSUpdateType OPTIONAL,
+    uEAreaIndication              [20] UEAreaIndication OPTIONAL
 }
 
 -- See clause 6.2.2.2.6 for details of this structure
@@ -1824,6 +1832,17 @@ RATFrequencySelectionPriority ::= INTEGER (1..256)
 
 FiveGMMCapability ::= OCTET STRING (SIZE(1..13))
 
+-- TS 29.171 [54], clause 7.4.48 and TS 29.572 [24], clause 6.1.6.2.42
+UEAreaIndication ::= SEQUENCE
+{
+    country                      [1] UTF8String (SIZE(2)) OPTIONAL,
+    internationalAreaIndication  [2] BOOLEAN OPTIONAL
+}
+
+FiveGSUpdateType ::= OCTET STRING (SIZE(1))
+
+UnavailabilityPeriodDuration ::= OCTET STRING (SIZE(1))
+
 -- ==================
 -- 5G SMF definitions
 -- ==================
@@ -1857,7 +1876,9 @@ SMFPDUSessionEstablishment ::= SEQUENCE
     handoverState                 [24] HandoverState OPTIONAL,
     gTPTunnelInfo                 [25] GTPTunnelInfo OPTIONAL,
     pCCRules                      [26] PCCRuleSet OPTIONAL,
-    ePSPDNConnectionEstablishment [27] EPSPDNConnectionEstablishment OPTIONAL
+    ePSPDNConnectionEstablishment [27] EPSPDNConnectionEstablishment OPTIONAL,
+    satelliteBackhaulCategory     [28] SBIType OPTIONAL,
+    gEOSatelliteID                [29] GEOSatelliteID OPTIONAL
 }
 
 -- See clause 6.2.3.2.3 for details of this structure
@@ -1882,7 +1903,9 @@ SMFPDUSessionModification ::= SEQUENCE
     pCCRules                    [17] PCCRuleSet OPTIONAL,
     ePSPDNConnectionModification[18] EPSPDNConnectionModification OPTIONAL,
     uPPathChange                [19] UPPathChange OPTIONAL,
-    pFDDataForApp               [20] PFDDataForApp OPTIONAL
+    pFDDataForApp               [20] PFDDataForApp OPTIONAL,
+    satelliteBackhaulCategory   [21] SBIType OPTIONAL,
+    gEOSatelliteID              [22] GEOSatelliteID OPTIONAL
 }
 
 -- See clause 6.2.3.2.4 for details of this structure
@@ -1933,7 +1956,9 @@ SMFStartOfInterceptionWithEstablishedPDUSession ::= SEQUENCE
     gTPTunnelInfo                                      [23] GTPTunnelInfo OPTIONAL,
     pCCRules                                           [24] PCCRuleSet OPTIONAL,
     ePSStartOfInterceptionWithEstablishedPDNConnection [25] EPSStartOfInterceptionWithEstablishedPDNConnection OPTIONAL,
-    pFDDataForApps                                     [26] PFDDataForApps OPTIONAL
+    pFDDataForApps                                     [26] PFDDataForApps OPTIONAL,
+    satelliteBackhaulCategory                          [27] SBIType OPTIONAL,
+    gEOSatelliteID                                     [28] GEOSatelliteID OPTIONAL
 }
 
 -- See clause 6.2.3.2.6 for details of this structure
@@ -2136,13 +2161,15 @@ SMFServingNetwork ::= SEQUENCE
 
 AccessInfo ::= SEQUENCE
 {
-    accessType            [1] AccessType,
-    rATType               [2] RATType OPTIONAL,
-    gTPTunnelID           [3] FTEID,
-    non3GPPAccessEndpoint [4] UEEndpointAddress OPTIONAL,
-    establishmentStatus   [5] EstablishmentStatus,
-    aNTypeToReactivate    [6] AccessType OPTIONAL,
-    gTPTunnelInfo         [7] GTPTunnelInfo OPTIONAL
+    accessType                [1] AccessType,
+    rATType                   [2] RATType OPTIONAL,
+    gTPTunnelID               [3] FTEID,
+    non3GPPAccessEndpoint     [4] UEEndpointAddress OPTIONAL,
+    establishmentStatus       [5] EstablishmentStatus,
+    aNTypeToReactivate        [6] AccessType OPTIONAL,
+    gTPTunnelInfo             [7] GTPTunnelInfo OPTIONAL,
+    satelliteBackhaulCategory [8] SBIType OPTIONAL,
+    gEOSatelliteID            [9] GEOSatelliteID OPTIONAL
 }
 
 -- see Clause 6.1.2 of TS 24.193[44] for the details of the ATSSS container contents.
@@ -2418,6 +2445,9 @@ EASServerAddress ::= SEQUENCE
     port             [2]  PortNumber
 }
 
+-- See table 5.4.2.1 of TS 29.571 [17]
+GEOSatelliteID ::= UTF8String
+
 -- ================================
 -- PGW-C + SMF PDNConnection Events
 -- ================================