E2AP PDU Decoding

[lightxy233]

Hello, forgive me for submitting a similar issue, I'm confused about decoding the data in E2AP PDU since I don't know how to get right numbers sent from NS3 and the "E2SM strings" in issue#2

For example, the Decoded E2AP PDU in log is

Decoded E2AP PDU: InitiatingMessage ::= {     procedureCode: 5     criticality: 1 (ignore)     
   value: RICindication ::= {         protocolIEs: ProtocolIE-Container ::= {             
      RICindication-IEs ::= {                 id: 29                 criticality: 0 (reject)                 value: RICrequestID ::= {                     ricRequestorID: 24                     ricInstanceID: 0                 }             }             
      RICindication-IEs ::= {                 id: 5                 criticality: 0 (reject)                 value: 200             }             
      RICindication-IEs ::= {                 id: 15                 criticality: 0 (reject)                 value: 1             }             
      RICindication-IEs ::= {                 id: 27                 criticality: 0 (reject)                 value: 1             }             
      RICindication-IEs ::= {                 id: 28                 criticality: 0 (reject)                 value: 0 (report)             }             
      RICindication-IEs ::= {                 id: 25                 criticality: 0 (reject)                 value:                      00 00 00 01 87 46 2F 6E F4 00 31 31 31 50 32 00                      63 32             }             
      RICindication-IEs ::= {                 id: 26                 criticality: 0 (reject)                 value:                      30 80 00 00 60 31 31 31 33 32 00 32 F0 00 8B 00                      8B 02 31 31 31 00 00 60 01 A6 00 00 04 31 31 31                      32 05 01 60 54 42 2E 54 6F 74 4E 62 72 44 6C 49                      6E 69 74 69 61 6C 2E 51 70 73 6B 00 02 03 50 01                      70 54 42 2E 54 6F 74 4E 62 72 44 6C 49 6E 69 74                      69 61 6C 2E 31 36 51 61 6D 00 02 01 49 01 70 54                      42 2E 54 6F 74 4E 62 72 44 6C 49 6E 69 74 69 61                      6C 2E 36 34 51 61 6D 00 02 01 3F 00 C0 52 52 55                      2E 50 72 62 55 73 65 64 44 6C 00 01 74 01 10 44                      52 42 2E 4D 65 61 6E 41 63 74 69 76 65 55 65 44                      6C 00 01 07 00 06 40 05 30 30 30 30 33 01 00 F0                      44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45 49 44                      20 04 80 03 01 97 40 05 30 30 30 31 32 01 00 F0                      44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45 49 44                      20 04 80 01 00 F7 40 05 30 30 30 30 36 01 00 F0                      44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45 49 44                      20 04 80 01 03 29 40 05 30 30 30 31 31 01 00 F0                      44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45 49 44                      20 05 80 00 00 62 25 40 05 30 30 30 30 37 01 00                      F0 44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45 49                      44 20 05 80 00 00 62 25 40 05 30 30 30 31 30 01                      00 F0 44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45                      49 44 20 04 80 01 0A 55 40 05 30 30 30 30 39 01                      00 F0 44 52 42 2E 55 45 54 68 70 44 6C 2E 55 45                      49 44 20 04 80 00 05 9B             }             
      RICindication-IEs ::= {                 id: 20                 criticality: 0 (reject)                 value: 63 70 69 64             }         }     } } "}

For RICindicationMessage (the part after RICindication-IEs ::= { id: 26 ), I know some bytes represent ASCII code, but I don't know how to handle the rest

0�`111322ð���111`�¦�1112��`TB.TotNbrDlInitial.Qpsk��P�pTB.TotNbrDlInitial.16Qam��I�pTB.TotNbrDlInitial.64Qam��?ÀRRU.PrbUsedDl�t��DRB.MeanActiveUeDl���@�00003�ðDRB.UEThpDl.UEID �����@�00012�ðDRB.UEThpDl.UEID ���÷@�00006�ðDRB.UEThpDl.UEID ����)@�00011�ðDRB.UEThpDl.UEID ��b%@�00007�ðDRB.UEThpDl.UEID ��b%@�00010�ðDRB.UEThpDl.UEID ���
U@�00009�ðDRB.UEThpDl.UEID ����

Is there any recommended way to obtain original information from Decoded E2AP PDU ?

[Thecave3]

Hi @lightxy233, you can find an example of the decoding on the O-RAN documentation.
In the next release, we will share also a C++ example.
I'm gonna keep this thread open until the next release.

[lightxy233]

Thanks, looking forward to your new release!