From 1a5cb8a6e2b828eeb0650ef1d73f87c356742b21 Mon Sep 17 00:00:00 2001
From: Robert Schmidt <robert.schmidt@openairinterface.org>
Date: Wed, 26 Apr 2023 15:02:12 +0200
Subject: [PATCH] UE NAS: Add timeout before shutting down UE to RLC Ack the
 PDU

---
 openair3/NAS/NR_UE/nr_nas_msg_sim.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/openair3/NAS/NR_UE/nr_nas_msg_sim.c b/openair3/NAS/NR_UE/nr_nas_msg_sim.c
index e57e3800de..b7cc6de789 100644
--- a/openair3/NAS/NR_UE/nr_nas_msg_sim.c
+++ b/openair3/NAS/NR_UE/nr_nas_msg_sim.c
@@ -1003,6 +1003,11 @@ void *nas_nrue_task(void *args_p)
       case NAS_CONN_RELEASE_IND:
         LOG_I(NAS, "[UE %ld] Received %s: cause %u\n", instance, ITTI_MSG_NAME (msg_p),
               NAS_CONN_RELEASE_IND (msg_p).cause);
+        /* the following is not clean, but probably necessary: we need to give
+         * time to RLC to Ack the SRB1 PDU which contained the RRC release
+         * message. Hence, we just below wait some time, before finally
+         * unblocking the nr-uesoftmodem, which will terminate the process. */
+        usleep(100000);
         itti_wait_tasks_unblock(); /* will unblock ITTI to stop nr-uesoftmodem */
         break;