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34 Commits

Author SHA1 Message Date
jmasterfunk84 1e6b1d4f7b
[MME] Implicit Network-initiated Deregistration (#2013) 
* [MME] Introduce aging timers

* Creating three new timers
* mirroring work done by gstaa on the AMF
* Implicit detach procedures added
* Fix for detach from unknown UE

* no Purge Timer, no config, expanded code
 2023-01-26 21:22:17 +09:00
Sukchan Lee 689574a2d9 [AMF/MME] Fixed crash when no NG/S1 context(#2012) 2023-01-23 10:37:22 +09:00
Sukchan Lee 01a7b3c9b8 Follow-up on #1991 2023-01-14 09:20:52 +09:00
jmasterfunk84 3fd7ecc9a2
[MME] Add Purge-UE Capability (#1991) 
* [MME] Add Purge-UE Capability

* Add OGS_GTP_..._PURGE_AND_REMOVE to split CLR case
 2023-01-14 09:13:48 +09:00
Sukchan Lee 3955e9ba8d Revert the previous commit on #1797 2022-10-07 14:06:30 +09:00
Sukchan Lee dc6ca962bb Follow-up on #1797 2022-10-06 10:10:31 +09:00
Sukchan Lee 6d27fbb8cc Follow-up on #1797 2022-10-05 14:50:52 +09:00
jmasterfunk84 15680003b5
[MME] Cancel Location while Idle (#1797) 
* Cancel Location while Idle Fix

* Forgot about SGSAP on MME Change.

Added "action" to sgsap_send_detach..

* Make handle_clr uniform with other handlers

* Added Robustness for Any Detach Type

* Memory wasn't freed upon CLR for unknown IMSIs

* Moving MME Detach to new PR
 2022-10-05 11:06:01 +09:00
Sukchan Lee 321c8d4cf9 [SGsAP] Changed message if Paging failed (#1701) 
The problem occurred in the following scenario:

1. VLR sent PAGING-REQUEST to the MME
2. MME sent S1-Paging to the UE
3. Paging failed
4. MME responded SERVICE-REQUEST to the VLR
5. VLR sent DOWNLINK-UNITDATA to the MME
6. Even though there is no S1 Context,
   MME try to sent DownlinkNASTransport message to the UE.
7. So, the problem occurred.

I've changed the number 4 PAGING-REJECT instead of SERVICE-REQUEST.
 2022-08-19 18:58:55 +09:00
Sukchan Lee a9694d6474 [MME] Follow-up Cancel Location Handling (#1698) 2022-08-19 16:52:39 +09:00
jmasterfunk84 c98333bbfe
[MME] Cancel Location Handling (#1698) 
* CLR while idle is broken after 7031856cd7

Cancel Location Request arriving while UE is idle will not proceed to paging due to this check for S1 connection.  Using new flag "isAnswer" to bypass this check to allow paging to occur when we are not doing a AIA/ULA related procedure.

* No Context Setup is required when sending the detach request.  If the paging was due to wanting to send a Detach Request to the UE, then we fast track to sending the detach request.

* emm-sm.c:
In the case of MME initiated detach while UE is idle, there is no initial conext setup.  We go right from the service request after paging into sending the detach request.  TS23.401

mme-path.c:
Using nas_eps.type in the case of MME Initiated Detach while UE is idle does not work.  nas_eps.type would represent the service request.

mme-s11-handler.c:
After S11 action, no action should be taken.  We want to wait for the detach accept from the UE before proceeding with the S1 release (detach).

* InitialContextSetup should occur for detach.
 2022-08-19 16:44:06 +09:00
Sukchan Lee 4cb657c804 [MME] Changed CauseNas_detach in DETACH (#1676) 2022-08-06 14:00:54 +09:00
Sukchan Lee 5524dc5e29 Refact paging module (#1676) 2022-07-30 14:44:34 +09:00
Pau Espin e3da7c9934
Rename GTPv2C specifics to gtp2 prefix (#1485) 
In the past only GTPv2C was supported, and had the "gtp" generic prefix.
Later on, GTPv1C support was added, and "gtp1" prefix was used.
Let's move GTPv2C specific bits to have "gtp2" prefix too, and leave
"gtp" prefix for generic stuff among different GTP versions.
 2022-04-13 07:07:39 +09:00
Sukchan Lee 1326fc85dc [MME] fix the bug when GTPv2 conflict (#1095) 2021-07-15 21:20:56 +09:00
Sukchan Lee c48f107520 [MME] fix the crash when release a UE (#1058) 2021-06-17 17:16:16 +09:00
Sukchan Lee 873cf398c7 [ALL] Add protection of message encoding (#991) 
All process will be forcely exited if it failed to encode the S1AP/NGAP/GTP/PFCP message. It is to make sure there was no problem with the encoding of open5gs.
 2021-05-16 12:22:10 +09:00
Sukchan Lee f1a207fd9b Support VoLTE service in ECM-IDLE 2020-11-07 17:27:12 -05:00
Sukchan Lee 93312e8f3d Fix the bug for S1-reset or eNB-restart(#627) 2020-10-28 22:59:27 -04:00
Sukchan Lee 15e42bc4a9 Fix MME crash when VoLTE is enabled [#619] 2020-10-22 17:53:13 -04:00
Sukchan Lee 8d55964bcc Change buffering instead of deleting [#592] 2020-10-08 22:54:13 -04:00
Sukchan Lee d64db21050 Use GTP-U Buffering instead of Deletion[#592,#568] 2020-10-07 21:21:48 -04:00
Sukchan Lee 30b7f7669e rollback v2.0.11 2020-10-05 14:06:17 -04:00
Sukchan Lee a3fa0d8362 fix the warning 2020-10-01 13:35:06 -04:00
Sukchan Lee 88399da5b6 Fix release access bearer #592 2020-10-01 13:27:58 -04:00
Sukchan Lee 7f9f6fc3f2 rollback ogs_expect() [#551] 2020-09-08 22:17:13 -04:00
Sukchan Lee a46be09a6f Fix the MME assertion bug [#551] 2020-09-06 22:09:24 -04:00
Sukchan Lee e86b1043c2 5G Core: Maintaining Old NAS signalling [#546] 2020-09-03 22:00:26 -04:00
Sukchan Lee 6f6800b52e NGAP is added 2020-05-22 22:24:48 -04:00
Sukchan Lee a622feac84 [#256] Remove timer of NAS message related to S1AP 2019-11-18 09:04:10 +09:00
Sukchan Lee c8bcfffe2e [#258] All GTP message is fixed not to crash 2019-11-15 23:56:55 +09:00
Sukchan Lee ae3e59053d [#220] Timer for UE Context Release 2019-07-21 01:03:19 +09:00
Sukchan Lee cb369daaea fix indentation in MME 2019-07-11 21:53:54 +09:00
Sukchan Lee 477f16ad0b rename project done 2019-06-11 22:10:47 +09:00