Warning: While RAW-decoding type '@NG_NAS_TypeDefs.NG_REGISTRATION_REQUEST': Can not decode type '@NG_NAS_TypeDefs.NG_REGISTRATION_REQUEST', because invalid message was received
Dear Support,
The data structure NG_REGISTRATION_REQUEST is defined as:
type record NG_REGISTRATION_REQUEST { /* 24.501 cl. 8.2.6
Significance: dual
Direction: UE to network */
ExtdProtocolDiscriminator protocolDiscriminator, /* cl. 9.2 M V 1 */
SpareHalfOctet spareHalfOctet, /* cl. 9.5 M V 1/2 */
SecurityHeaderType securityHeaderType, /* cl. 9.3 M V 1/2 */
MessageType messageType, /* cl. 9.7 M V 1 */
NAS_KeySetIdentifier ngNasKSI, /* cl. 9.11.3.32 M V 1/2 */
RegistrationType registrationType, /* cl. 9.11.3.7 M V 1/2 Dec18 */
NG_MobileIdentity ngMobileId, /* cl. 9.11.3.4 M LV-E 6-n */
NAS_KeySetIdentifier nonCurrentNativeKSI optional, /* cl. 9.11.3.32 O TV 1 IEI=C- */
NG_GMM_Cap gmmCapability optional, /* cl. 9.11.3.1 O TLV 3-15 IEI=10 */
NG_UE_SecurityCapability ueSecurityCapability optional, /* cl. 9.11.3.54 O TLV 4-10 IEI=2E */
NSSAI requestedNSSAI optional, /* cl. 9.11.3.37 O TLV 4-74 IEI=2F */
...
} with {
variant "FIELDORDER(msb)";
variant (ngNasKSI) "FORCEOMIT(iei)";
variant (ngMobileId) "FORCEOMIT(iei)";
}The structure NAS_KeySetIdentifier is used twice. The first used is a mandatory field so 'NAS_KeySetIdentifier.iei' field shall be omitted. The second use is optional, so 'NAS_KeySetIdentifier.iei' field shall be present.
The structure KeySetIdentifier is defined as follow
type record NAS_KeySetIdentifier { /* 24.301 cl. 9.9.3.21 */
IEI4_Type iei optional, /* present in case of TV; omit in case of V */
B1_Type tsc, // Type of security context: 0 = cached, 1 = mapped
NAS_KsiValue nasKeySetId
} with {
variant "FIELDORDER(msb)";
variant "PRESENCE (iei = 'B'H)";
}where IEI4_Type is defined as:
type hexstring HalfOctet_Type length(1) with { variant "FIELDLENGTH(1)" };
The issue is on variant "PRESENCE (iei = 'B'H)". If I comment it, the message is decoded in a wrong way because of the codec try to decode nonCurrentNativeKSI field which is not present. If I use it, I got the issue.
Please, can you indicate me if it is a wrong usage of PRESENCE of there is an issue on codec side?
I attached the project.
Many thanks a lot for your support
Best regards,
Yann Garcia
Senior Software Engineer
Microsoft MCAD.net Certified
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