Hi,
We are trying to setup LTE network using OAI and LimeSDR.
We have eNB compiling and running , however we have issues in attaching UE to the network.
Below were the error appeared in eNB…
[MAC][I][eNB_dlsch_ulsch_scheduler] UE rnti 5452 : in synch, PHR 40 dB
[RRC][I]UE rnti 5452 failure timer 0/20000 [PHY][I]UE 0 : rnti 5452
[MAC][I][eNB_dlsch_ulsch_scheduler] UE rnti 5452 : in synch, PHR 40 dB
[RRC][I]UE rnti 5452 failure timer 0/20000
[PHY][W][eNB 0, CC 0] frame 310, subframe 2, UE 0: ULSCH consecutive error count reached 20, triggering UL Failure
[MAC][I][UL_failure_indication] [eNB 0][UE 0/5452] Frame 310 subframeP 2 Signaling UL Failure for UE 0 on CC_id 0 (timer 0)
[PHY][E]ERROR: Format 1A: rb_alloc (1ff) > RIV_max (144)
[PHY][E]ERROR: Format 1A: rb_alloc (1ff) > RIV_max (144)
[PHY][E]ERROR: Format 1A: rb_alloc (1ff) > RIV_max (144)
[PHY][E]ERROR: Format 1A: rb_alloc (1ff) > RIV_max (144)
[PHY][E]ERROR: Format 1A: rb_alloc (1ff) > RIV_max (144)
[MAC][I][eNB_dlsch_ulsch_scheduler] UE 0 rnti 5452: UL Failure after repeated PDCCH orders: Triggering RRC [RRC][I]Frame 330, Subframe 1: UE 5452 UL failure, activating timer MAC: remove UE 0 rnti 5452
[MAC][I][rrc_mac_remove_ue] Removing UE 0 from Primary CC_id 0 (rnti 5452)
[RRC][I]UE rnti 5452 failure timer 6940/20000
[RRC][I]UE rnti 5452 failure timer 17180/20000
[RRC][I]Removing UE 5452 instance
[RRC][W][eNB 0] Removing UE RNTI 5452 MAC: cannot remove UE rnti 5452
[MAC][W][rrc_mac_remove_ue] rrc_mac_remove_ue: UE 5452 not found
[S1AP][W][s1ap_ue_context_release_req] Failed to find ue context associated with eNB ue s1ap id: 0
[S1AP][E][s1ap_eNB_task] Failed to find ue context associated with eNB ue s1ap id: 0
[RRC][I][FRAME 00000][eNB][MOD 00][RNTI 5452] Removed UE context [INFO] L 4266779680 [INFO] L 4343611520
Also MME stops working and gives segmentation fault
Below were the mme error log.
layer for transmission
000523 00097:650926 7FFFF1C65700 TRACE NAS-EM nair-cn/SRC/NAS/EMM/SAP/emm_as.c:0973 Leaving _emm_as_send() (rc=0)
000524 00097:650928 7FFFDAFFD700 TRACE MME-AP /SRC/MME_APP/mme_app_transport.c:0057 Entering mme_app_handle_nas_dl_req()
000525 00097:650929 7FFFF1C65700 TRACE NAS-EM nair-cn/SRC/NAS/EMM/SAP/emm_as.c:0243 Leaving emm_as_send() (rc=0)
000526 00097:650932 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_sap.c:0143 Leaving emm_sap_send() (rc=0)
000527 00097:650933 7FFFDAFFD700 DEBUG MME-AP /SRC/MME_APP/mme_app_transport.c:0087 MME_APP:DOWNLINK NAS TRANSPORT. Establishing S1 sig connection. mme_ue_s1ap_id = 1,enb_ue_s1ap_id = 420141
000528 00097:650935 7FFFDAFFD700 TRACE MME-AP cn/SRC/MME_APP/mme_app_context.c:0715 Entering mme_ue_context_update_ue_sig_connection_state()
000529 00097:650936 7FFFDAFFD700 DEBUG MME-AP cn/SRC/MME_APP/mme_app_context.c:0749 MME_APP: UE Connection State changed to CONNECTED.enb_ue_s1ap_id = 420141, mme_ue_s1ap_id = 1
000531 00097:650938 7FFFDAFFD700 TRACE MME-AP /SRC/MME_APP/mme_app_transport.c:0098 Leaving mme_app_handle_nas_dl_req() (rc=0)
000530 00097:650937 7FFFDB7FE700 TRACE S1AP C/S1AP/s1ap_mme_nas_procedures.c:0343 Entering s1ap_generate_downlink_nas_transport()
000532 00097:650939 7FFFF1C65700 INFO NAS-EM -cn/SRC/NAS/EMM/Authentication.c:0606 EMM-PROC - Timer T3460 (0) expires in 6 seconds
000533 00097:650941 7FFFF1C65700 TRACE NAS-EM -cn/SRC/NAS/EMM/Authentication.c:0610 Leaving _authentication_request() (rc=0)
000534 00097:650944 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_sap.c:0110 Entering emm_sap_send()
000535 00097:650945 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_reg.c:0106 Entering emm_reg_send()
000536 00097:650948 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0258 Entering emm_fsm_process()
000537 00097:650950 7FFFF1C65700 INFO NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0226 ** emm_fsm_status : 1
000538 00097:650952 7FFFF1C65700 INFO NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0265 EMM-FSM - Received event COMMON_PROC_REQ (1) in state DEREGISTERED
000539 00097:650955 7FFFF1C65700 TRACE NAS-EM RC/NAS/EMM/SAP/EmmDeregistered.c:0094 Entering EmmDeregistered()
000540 00097:650958 7FFFF1C65700 INFO NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0226 ** emm_fsm_status : 1
000541 00097:650960 7FFFDB7FE700 NOTIC S1AP C/S1AP/s1ap_mme_nas_procedures.c:0398 Send S1AP DOWNLINK_NAS_TRANSPORT message ue_id = 0x00000001 MME_UE_S1AP_ID = 0x00000001 eNB_UE_S1AP_ID = 0x06692D
000542 00097:650961 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0176 Entering emm_fsm_set_status()
000543 00097:650963 7FFFF1C65700 INFO NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0182 UE 0x00000001 EMM-FSM - Status changed: DEREGISTERED ===> COMMON-PROCEDURE-INITIATED
000544 00097:650967 7FFFDB7FE700 TRACE S1AP C/S1AP/s1ap_mme_nas_procedures.c:0408 Leaving s1ap_generate_downlink_nas_transport() (rc=0)
000545 00097:650967 7FFFF1C65700 TRACE MME-AP cn/SRC/MME_APP/mme_app_context.c:0995 Entering mme_ue_context_update_ue_emm_state()
000546 00097:650970 7FFFF1464700 DEBUG SCTP RC/SCTP/sctp_primitives_server.c:0277 [40][2] Sending buffer 0x7fffcc0021d0 of 62 bytes on stream 1 with ppid 18
000547 00097:650971 7FFFF1C65700 TRACE MME-AP cn/SRC/MME_APP/mme_app_context.c:1002 ** ue_context_p->mm_state: 0, new_mm_state: 0 **000548 00097:650974 7FFFF1C65700 TRACE MME-AP cn/SRC/MME_APP/mme_app_context.c:1017 ** ue_context_p->mm_state: 0, new_mm_state: 0 **000549 00097:650977 7FFFF1C65700 TRACE MME-AP cn/SRC/MME_APP/mme_app_context.c:1018 Leaving mme_ue_context_update_ue_emm_state()
000550 00097:650980 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0194 Leaving emm_fsm_set_status() (rc=0)
000551 00097:650983 7FFFF1C65700 TRACE NAS-EM RC/NAS/EMM/SAP/EmmDeregistered.c:0155 Leaving EmmDeregistered() (rc=0)
000552 00097:650986 7FFFF1464700 DEBUG SCTP RC/SCTP/sctp_primitives_server.c:0288 Successfully sent 62 bytes on stream 1
000553 00097:650986 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_fsm.c:0273 Leaving emm_fsm_process() (rc=0)
000554 00097:650989 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_reg.c:0119 Leaving emm_reg_send() (rc=0)
000555 00097:650991 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_sap.c:0143 Leaving emm_sap_send() (rc=0)
000556 00097:650992 7FFFF1C65700 TRACE NAS-EM -cn/SRC/NAS/EMM/Authentication.c:0241 Leaving emm_proc_authentication() (rc=0)
000557 00097:650994 7FFFF1C65700 TRACE NAS-EM nair-cn/SRC/NAS/EMM/SAP/emm_cn.c:0160 Leaving _emm_cn_authentication_res() (rc=0)
000558 00097:650995 7FFFF1C65700 TRACE NAS-EM nair-cn/SRC/NAS/EMM/SAP/emm_cn.c:0494 Leaving emm_cn_send() (rc=0)
000559 00097:650997 7FFFF1C65700 TRACE NAS-EM air-cn/SRC/NAS/EMM/SAP/emm_sap.c:0143 Leaving emm_sap_send() (rc=0)
000560 00097:650998 7FFFF1C65700 TRACE NAS-EM TE/openair-cn/SRC/NAS/nas_proc.c:0402 Leaving nas_proc_auth_param_res() (rc=0)
000561 00097:651000 7FFFF1C65700 TRACE NAS-EM TE/openair-cn/SRC/NAS/nas_proc.c:0376 Leaving nas_proc_authentication_info_answer() (rc=0)
** Entering derive_key_nas
** Entering kdf in openair-cn/SRC/SECU/kdf.c
Thread 4 “ITTI 5” received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7ffff1c65700 (LWP 10495)]
0x00007ffff6e45357 in nettle_sha256_init () from /usr/lib/x86_64-linux-gnu/libnettle.so.6
Can someone help us in identifying what is the problem
Thanks
M.Diwakar