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NR CORE - Registration

 

 

Followings are the name of each network component.

    AMF     Access and Mobility Management Function ==> Equivalent to MME in 4G

    AUSF    Authentication Server Function

    DN       Data Network

    NEF      Network Exposure Function

    NRF      Network Repository Function

    NSSF    Network Slice Selection Function

    PCF      Policy Control Function ==> Equivalent to PCRF in 5G

    (R)AN   (Radio) Access Network

    SMF     Session Management Function

    UDM     Unified Data Management ==> Equivalent to HSS in 4G

    UPF      User Plane Function ==> Equivalent to PGW in 4G

    SMSF   SMS Function

    SEAF    SEcurity Anchor Function ==> part of AMF function

    ARPF    Authentication credential Repository and Processing Function

    SIDF    Subscription Identifier De-concealing Function

 

 

Following is an example log captured with Amarisoft Callbox.

 

 

 

[1]

 

Stream id: 1

HEADERS:

  :method: GET

  :path: /n5g-eir-eic/v1/equipment-status?pei=8690570563562913

  :scheme: http

  :authority: 127.0.1.100:5557

  accept: application/json

  accept: application/problem+json

 

 

[2]

 

Stream id: 1

HEADERS:

  :status: 404

  content-type: application/problem+json

DATA:

  {"cause":"ERROR_EQUIPMENT_UNKNOWN"}

 

 

[3]

 

Stream id: 3

HEADERS:

  :method: PUT

  :path: /nudm-uecm/v1/imsi-001010123456789/registrations/amf-3gpp-access

  :scheme: http

  :authority: 127.0.1.100:5556

  accept: application/json

  accept: application/problem+json

  content-type: application/json

DATA:

  {"amfInstanceId":"96fc86dc-9bf4-489e-acb0-53a672cac636",

   "imsVoPs":"HOMOGENEOUS_SUPPORT",

   "deregCallbackUri":"http://127.0.1.100:6666/nudm-uecm/v1/imsi-001010123456789/pei-8690570563562913/dereg-notify",

   "initialRegistrationInd":true,

   "guami":{"plmnId":{"mcc":"001","mnc":"01"},"amfId":"800101"},

   "ratType":"NR"}

 

 

[4]

 

Message: 127.0.1.100:5556 Status: 204

 

Data:

Stream id: 3

HEADERS:

  :status: 204

 

 

[5]

 

Message: 127.0.1.100:5556 GET http://127.0.1.100:5556/nudm-sdm/v2/imsi-001010123456789?dataset-names=AM,SM,SMF_SEL

 

Data:

Stream id: 5

HEADERS:

  :method: GET

  :path: /nudm-sdm/v2/imsi-001010123456789?dataset-names=AM,SM,SMF_SEL

  :scheme: http

  :authority: 127.0.1.100:5556

  accept: application/json

  accept: application/problem+json

 

 

[6]

 

Stream id: 5

HEADERS:

  :status: 200

  content-type: application/json

DATA:

  {"amData":{"subscribedUeAmbr":{"uplink":"1000000 Kbps","downlink":"3000000 Kbps"},

   "nssai":{"defaultSingleNssais":[{"sst":1}],"singleNssais":[{"sst":1}]},

   "micoAllowed":true,"subscribedDnnList":["default","internet","ims","sos"],

   "ptwParametersList":[{"operationMode":"WB_N1","ptwValue":"0011"},{"operationMode":"NB_N1","ptwValue":"0011"}]},

   "smData":[{"singleNssai":{"sst":1},

             "dnnConfigurations":{"default":{"pduSessionTypes":{"defaultSessionType":"IPV4","allowedSessionTypes":["IPV4"]},

             "sscModes":{"defaultSscMode":"SSC_MODE_1","allowedSscModes":["SSC_MODE_1"]},

             "iwkEpsInd":true,

             "5gQosProfile":{"5qi":9,"arp":{"priorityLevel":15,"preemptCap":"NOT_PREEMPT","preemptVuln":"NOT_PREEMPTABLE"}},

             "sessionAmbr":{"uplink":"1000000 Kbps","downlink":"3000000 Kbps"}},

             "internet":{"pduSessionTypes":{"defaultSessionType":"IPV4","allowedSessionTypes":["IPV4"]},

             "sscModes":{"defaultSscMode":"SSC_MODE_1","allowedSscModes":["SSC_MODE_1"]},"iwkEpsInd":true,

             "5gQosProfile":{"5qi":9,"arp":{"priorityLevel":15,"preemptCap":"NOT_PREEMPT","preemptVuln":"NOT_PREEMPTABLE"}},

             "sessionAmbr":{"uplink":"1000000 Kbps","downlink":"3000000 Kbps"}},

             "ims":{"pduSessionTypes":{"defaultSessionType":"IPV4V6","allowedSessionTypes":["IPV4","IPV6","IPV4V6"]},

             "sscModes":{"defaultSscMode":"SSC_MODE_1","allowedSscModes":["SSC_MODE_1"]},

             "iwkEpsInd":true,

             "5gQosProfile":{"5qi":5,"arp":{"priorityLevel":15,"preemptCap":"NOT_PREEMPT","preemptVuln":"NOT_PREEMPTABLE"}},

             "sessionAmbr":{"uplink":"1000000 Kbps","downlink":"3000000 Kbps"}},

             "sos":{"pduSessionTypes":{"defaultSessionType":"IPV4V6","allowedSessionTypes":["IPV4","IPV6","IPV4V6"]},

             "sscModes":{"defaultSscMode":"SSC_MODE_1","allowedSscModes":["SSC_MODE_1"]},

             "iwkEpsInd":true,

             "5gQosProfile":{"5qi":5,"arp":{"priorityLevel":15,"preemptCap":"NOT_PREEMPT","preemptVuln":"NOT_PREEMPTABLE"}},

             "sessionAmbr":{"uplink":"1000000 Kbps","downlink":"3000000 Kbps"}}}}],

     "smfSelData":{"subscribedSnssaiInfos":{"1":{

         "dnnInfos":[{"dnn":"default","defaultDnnIndicator":true,"lboRoamingAllowed":false,"iwkEpsInd":false,"dnnBarred":false},

                         {"dnn":"internet","defaultDnnIndicator":false,"lboRoamingAllowed":false,"iwkEpsInd":false,"dnnBarred":false},

                         {"dnn":"ims","defaultDnnIndicator":false,"lboRoamingAllowed":false,"iwkEpsInd":false,"dnnBarred":false},

                         {"dnn":"sos","defaultDnnIndicator":false,"lboRoamingAllowed":false,"iwkEpsInd":false,"dnnBarred":false}]}}}}

 

 

[7]

 

Message: Registration accept

 

Data:                           ........

Protocol discriminator = 0x7e (5GS Mobility Management)

Security header = 0x2 (Integrity protected and ciphered)

Auth code = 0xc93c7d52

Sequence number = 0x02

Protocol discriminator = 0x7e (5GS Mobility Management)

Security header = 0x0 (Plain 5GS NAS message, not security protected)

Message type = 0x42 (Registration accept)

5GS registration result = 0x09 (Emergency registered=0, NSSAA to be performed=0, SMS allowed=1, 3GPP access)

5G-GUTI:

  5G-GUTI

    MCC = 001

    MNC = 01

    AMF Region ID = 128

    AMF Set ID = 4

    AMF Pointer = 1

    5G-TMSI = 0x32c5098b

TAI list:

  Length = 7

  Data = 00 00 f1 10 00 00 64

Allowed NSSAI:

  S-NSSAI

    Length of S-NSSAI contents = 1 (SST)

    SST = 0x01

5GS network feature support:

  0x03 (MPSI=0, IWK N26=0, EMF=not supported, EMC=not supported, IMS-VoPS-N3GPP=1, IMS-VoPS-3GPP=1)

  0x00 (5G-UP CIoT=0, 5G-IPHC-CP CIoT=0, N3 data=0, 5G-CP CIoT=0,

          RestrictEC=both CE mode A and CE mode B are not restricted, MCSI=0, EMCN3=0)

T3512 value:

  Value = 30

  Unit = 5 (1 minute)

Emergency number list:

  Length = 8

  Data = 03 1f 19 f1 03 1f 11 f2