NearRT-RIC and xApp with COTS UE

[fllay]

Hi
I am very excited about RIC. Did NearRT-RIC work with COTS? I have tried and It reported the RSRP for a while and then nearRT-RIC crashed. The console output is shown in the following:

pi@pi-IdeaPad:~/src/flexric/build/examples/xApp/c/monitor$ ./xapp_kpm_moni
Setting the config -c file to /usr/local/etc/flexric/flexric.conf
Setting path -p for the shared libraries to /usr/local/lib/flexric/
[xAapp]: Initializing ... 
[xApp]: nearRT-RIC IP Address = 127.0.0.1, PORT = 36422
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libkpm_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libtc_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/librlc_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libslice_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libpdcp_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libmac_sm.so 
[E2 AGENT]: Opening plugin from path = /usr/local/lib/flexric/libgtp_sm.so 
[NEAR-RIC]: Loading SM ID = 147 with def = ORAN-E2SM-KPM 
[NEAR-RIC]: Loading SM ID = 146 with def = TC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 143 with def = RLC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 145 with def = SLICE_STATS_V0 
[NEAR-RIC]: Loading SM ID = 144 with def = PDCP_STATS_V0 
[NEAR-RIC]: Loading SM ID = 142 with def = MAC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 148 with def = GTP_STATS_V0 
Filename = /tmp/xapp_db_1691505648516208 
 [xApp]: E42 SETUP-REQUEST sent
adding event fd = 8 ev-> 4 
[xApp]: E42 SETUP-RESPONSE received
[xApp]: xApp ID = 7 
Registered E2 Nodes = 1 
Pending event size before remove = 1 
Connected E2 nodes = 1
Registered node 0 ran func id = 147 
 Generated of req_id = 1 
[xApp]: RIC SUBSCRIPTION REQUEST sent
adding event fd = 8 ev-> 5 
[xApp]: SUBSCRIPTION RESPONSE received
Pending event size before remove = 1 
[xApp]: Successfully SUBSCRIBED to ran function = 147 
Received RIC Indication:
---Metric: RSRP: Value: 0
Received RIC Indication:
---Metric: RSRP: Value: 0
Received RIC Indication:
---Metric: RSRP: Value: 0
Received RIC Indication:
---Metric: RSRP: Value: 22
Received RIC Indication:
---Metric: RSRP: Value: 23
Received RIC Indication:
---Metric: RSRP: Value: 22
Received RIC Indication:
---Metric: RSRP: Value: 0
Received RIC Indication:
---Metric: RSRP: Value: 0
Received RIC Indication:
---Metric: RSRP: Value: 0
Remove handle number = 1 
E42 RIC_SUBSCRIPTION_DELETE_REQUEST  sdr->ric_id.ran_func_id 147  sdr->ric_id.ric_req_id 1 
[xApp]: E42 SUBSCRIPTION-DELETE sent 
adding event fd = 8 ev-> 7 
Received RIC Indication:
---Metric: RSRP: Value: 23
Received RIC Indication:
---Metric: RSRP: Value: 23
xapp_kpm_moni: /home/pi/src/flexric/src/xApp/e42_xapp.c:253: e2_event_loop_xapp: Assertion `*e.p_ev != E42_RIC_SUBSCRIPTION_DELETE_REQUEST_PENDING_EVENT && "Timeout waiting for Subscription Delete. Connection lost with the RIC?"' failed.
Aborted (core dumped)

and

pi@pi-IdeaPad:~/src/flexric/build/examples/ric$ ./nearRT-RIC 
Setting the config -c file to /usr/local/etc/flexric/flexric.conf
Setting path -p for the shared libraries to /usr/local/lib/flexric/
[NEAR-RIC]: nearRT-RIC IP Address = 127.0.0.1, PORT = 36421
[NEAR-RIC]: Initializing 
[NEAR-RIC]: Loading SM ID = 147 with def = ORAN-E2SM-KPM 
[NEAR-RIC]: Loading SM ID = 146 with def = TC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 143 with def = RLC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 145 with def = SLICE_STATS_V0 
[NEAR-RIC]: Loading SM ID = 144 with def = PDCP_STATS_V0 
[NEAR-RIC]: Loading SM ID = 142 with def = MAC_STATS_V0 
[NEAR-RIC]: Loading SM ID = 148 with def = GTP_STATS_V0 
[iApp]: Initializing ... 
[iApp]: nearRT-RIC IP Address = 127.0.0.1, PORT = 36422
fd created with 6 
Received message with id = 411, port = 2771 
[E2AP] Received SETUP-REQUEST from PLMN 999.70 Node ID 411 RAN type ngran_gNB
[NEAR-RIC]: Accepting RAN function ID 147 with def = `0ORAN-E2SM-KPM 
[NEAR-RIC]: Accepting interfaceType 0
[iApp]: E42 SETUP-REQUEST received
[iApp]: E42 SETUP-RESPONSE sent
[iApp]: SUBSCRIPTION-REQUEST xapp_ric_id->ric_id.ran_func_id 147  
[E2AP] SUBSCRIPTION REQUEST generated
[NEAR-RIC]: nb_id 411 port = 2771  
[NEAR-RIC]: nb_id 411 port = 2771  
[NEAR-RIC]: SUBSCRIPTION DELETE REQUEST tx

[iApp]: RIC_SUBSCRIPTION_DELETE_REQUEST sent 
nearRT-RIC: /home/pi/src/flexric/src/lib/ap/dec/e2ap_msg_dec_asn.c:2347: e2ap_create_pdu: Assertion `rval.code == RC_OK && "Are you sending data in ATS_ALIGEND_BASIC_PER syntax?"' failed.
Aborted (core dumped)

[pgawlowicz]

Hi, Thanks for your interest in the project.

I will investigate the issue. It crashes on timer expiration when waiting for the Subscription Delete Response. Probably, we need to extend this timer.

[ryantheelder]

Which UE did you test with?

[fllay]

I am using ZTE MU5002/MU5001.

[pgawlowicz]

@fllay The bug was on our side. It will be fixed in the next release.

[fllay]

Thank you very much. I am looking forward to test it.

[baolindong]

Hi @fllay
I am also very interested in using NearRT-RIC for Costue. I would like to take a look at the log and configuration files of your base station and learn how to deploy it. Thank you very much!

[fllay]

I used these files. One for gnb and another one for RIC. I follow step in the tutorial. It is summarized in the following steps:

1 start open5gs (5G core)
2. Start RIC
3. Start gnb using both config files.
4. Start xApp.

configs.zip

[fllay]

Latest release seems to fix the problem. Thank you