This is a static archive of our old Q&A Site. Please post any new questions and answers at ask.wireshark.org.

How to decode the RRC-Container in the s1ap Handover preparation message

0

Hi,

how do I decode the RRC-Container IE in the S1AP Handover preparation message (inter RAT Handover)

Paul

asked 16 Apr '14, 05:22

PaulTee's gravatar image

PaulTee
11●1●1●2
accept rate: 0%

Hi Anders,

thanks for your response, I have tried this and can see that the IE SourceRNC-ToTargetRNC-TransparentContainer is decoded with this setting.

But what I need next is actually the decode of the IE:
rRC-Container

please see below for an extract (which I should have included in my original request)

Paul.

ProtocolIE-Field id: id-Source-ToTarget-TransparentContainer (104) criticality: reject (0) value Source-ToTarget-TransparentContainer: 00a069033a00009a86555aa0d4aad511490608900030002b... SourceRNC-ToTargetRNC-TransparentContainer rRC-Container: 033a00009a86555aa0d4aad511490608900030002b142128... numberOfIuInstances: 1 relocationType: ue-involved (1) targetCellId: 393335 iE-Extensions: 1 item Item 0 ProtocolExtensionField id: id-UE-History-Information (200) criticality: ignore (1) extensionValue UE-History-Information: 000032f549000050018003e6

(16 Apr '14, 07:55) PaulTee

One Answer:

0

At lest on trunk enable the (edit->preferences->protocols->s1ap) s1ap preference "Dissect transparent container"

answered 16 Apr '14, 07:41

Anders's gravatar image

Anders ♦
4.6k●9●52
accept rate: 17%

ProtocolIE-Field id: id-Source-ToTarget-TransparentContainer (104) criticality: reject (0) value

      Source-ToTarget-TransparentContainer:

00a069033a00009a86555aa0d4aad511490608900030002b...

          SourceRNC-ToTargetRNC-TransparentContainer

          rRC-Container: &lt;&lt;-- this IE</code></pre><p>033a00009a86555aa0d4aad511490608900030002b142128...</p><pre><code>              numberOfIuInstances: 1

          relocationType: ue-involved (1)
          targetCellId:393335</code></pre></div><div id="comment-31891-info" class="comment-info"><span class="comment-age">(16 Apr '14, 08:00)</span> <span class="comment-user userinfo">PaulTee</span></div></div><span id="31893"></span><div id="comment-31893" class="comment"><div id="post-31893-score" class="comment-score"></div><div class="comment-text"><p>I think I would need to see the complete message. In the code there is this</p><p><code>     switch(message_type){         case INITIATING_MESSAGE:         / 9.2.1.7 Source eNB to Target eNB Transparent Container /             dissect_lte_rrc_HandoverPreparationInformation_PDU(parameter_tvb, actx-&gt;pinfo, subtree, NULL);             break;         case SUCCESSFUL_OUTCOME:         / 9.2.1.7 Source eNB to Target eNB Transparent Container /             dissect_lte_rrc_HandoverCommand_PDU(parameter_tvb, actx-&gt;pinfo, subtree, NULL);             break;         default:             break;     }</code></p><p>So if it's not one of those message types it's not covered.</p></div><div id="comment-31893-info" class="comment-info"><span class="comment-age">(16 Apr '14, 08:40)</span> <span class="comment-user userinfo">Anders ♦</span></div></div></div><div id="comment-tools-31887" class="comment-tools"></div><div class="clear"></div><div id="comment-31887-form-container" class="comment-form-container"></div><div class="clear"></div></div></td></tr></tbody></table>