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[AMF/MME] Delete UERadioCapability (#2040, #1917) 

o TS24.301(4G/LTE)
  5.5.1 Attach procedure
  5.5.1.2 Attach procedure for EPS services
  5.5.1.2.4 Attach accepted by the network

If the attach request is accepted by the network,
the MME shall delete the stored UE radio capability information
or the UE radio capability ID, if any.

o TS24.501(5G)
  5.5.2 De-registration procedure
  5.5.2.1 General

When the AMF enters the state 5GMM-DEREGISTERED for 3GPP access,
the AMF shall delete the stored UE radio capability information
or the UE radio capability ID, if any.
This commit is contained in:
Sukchan Lee 2023-02-05 12:03:00 +09:00
parent b7905725ac
commit b44fa29a7d
3 changed files with 37 additions and 14 deletions
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15
src/amf/gmm-handler.c
View File

@ -672,22 +672,9 @@ int gmm_handle_deregistration_request(amf_ue_t *amf_ue,
amf_ue->nas.ue.tsc, amf_ue->nas.amf.tsc,
amf_ue->nas.ue.ksi, amf_ue->nas.amf.ksi);
if (deregistration_request->de_registration_type.switch_off) {
if (deregistration_request->de_registration_type.switch_off)
ogs_debug(" Switch-Off");
/*
* Issue #1917
*
* When the UE sends a De-registration Request with Switch-Off,
* AMF should remove the the stored UE Radio Capability.
*
* Otherwise, the Radio Capability will not match
* because the gNB will not query the Radio Capability
* when the UE changes USIM.
*/
OGS_ASN_CLEAR_DATA(&amf_ue->ueRadioCapability);
}
ogs_info("[%s] SUCI", amf_ue->suci);
xact_count = amf_sess_xact_count(amf_ue);

22
src/amf/gmm-sm.c
View File

@ -80,6 +80,28 @@ void gmm_state_de_registered(ogs_fsm_t *s, amf_event_t *e)
AMF_UE_CLEAR_N2_TRANSFER(amf_ue, pdu_session_resource_setup_request);
AMF_UE_CLEAR_5GSM_MESSAGE(amf_ue);
CLEAR_AMF_UE_ALL_TIMERS(amf_ue);
/*
* Issue #2040
*
* TS24.501
* 5.5.2 De-registration procedure
* 5.5.2.1 General
*
* When the AMF enters the state 5GMM-DEREGISTERED for 3GPP access,
* the AMF shall delete the stored UE radio capability information
* or the UE radio capability ID, if any.
*
* (DEPRECATED) Issue #1917 (from Switch-Off to De-Registration)
*
* When the UE sends a De-registration Request with Switch-Off,
* AMF should remove the the stored UE Radio Capability.
*
* Otherwise, the Radio Capability will not match
* because the gNB will not query the Radio Capability
* when the UE changes USIM.
*/
OGS_ASN_CLEAR_DATA(&amf_ue->ueRadioCapability);
break;
case OGS_FSM_EXIT_SIG:
break;

14
src/mme/nas-path.c
View File

@ -145,6 +145,20 @@ int nas_eps_send_attach_accept(mme_ue_t *mme_ue)
ogs_timer_start(mme_ue->t3450.timer,
mme_timer_cfg(MME_TIMER_T3450)->duration);
/*
* Issue #2040
*
* TS24.301
* 5.5.1 Attach procedure
* 5.5.1.2 Attach procedure for EPS services
* 5.5.1.2.4 Attach accepted by the network
*
* If the attach request is accepted by the network,
* the MME shall delete the stored UE radio capability information
* or the UE radio capability ID, if any.
*/
OGS_ASN_CLEAR_DATA(&mme_ue->ueRadioCapability);
s1apbuf = s1ap_build_initial_context_setup_request(mme_ue, emmbuf);
if (!s1apbuf) {
ogs_error("s1ap_build_initial_context_setup_request() failed");