Update TESTING_GNB_W_COTS_UE.md
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## Configuration Overview:
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* Non Standalone (NSA) configuration : initial Control Plane established between UE and RAN eNB, then User Plane established between UE and gNB, Core network is 4G based supporting rel 15
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* Commercial UE: Oppo Reno 5G
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* OAI Software Defined gNB and eNB
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* eNB RF front end: USRP (ETTUS) B200 Mini or B210
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* gNB RF front end: USRP (ETTUS) B200 Mini or B210 (N300 will be needed for MIMO and wider BW's)
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* 5G TDD duplexing mode
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* 5G FR1 Band n78 (3.5 GHz)
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* BW: 40MHz
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* Antenna scheme: SISO
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## SW Repository / Branch
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https://gitlab.eurecom.fr/oai/openairinterface5g/tree/develop
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## Architecture Setup
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photos and schemes
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## Build and Install
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General guidelines for building :
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See https://gitlab.eurecom.fr/oai/openairinterface5g/blob/develop/doc/BUILD.md#building-ues-enodeb-and-gnodeb-executables
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### **EPC**
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for reference:
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https://github.com/OPENAIRINTERFACE/openair-epc-fed/blob/master-documentation/docs/DEPLOY_HOME.md
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```
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sudo bash
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cd /opt/hss_sim0609
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./starthss_real
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```
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### **eNB**
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```
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sudo bash
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cd /opt/hss_sim0609
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./starthss_real
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```
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### **gNB**
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```
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sudo bash
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cd /opt/hss_sim0609
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./starthss_real
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```
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## Testing
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* EPC launching (on EPC host):
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```
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sudo bash
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cd /opt/hss_sim0609
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./starthss_real
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```
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Open another window and:
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```
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sudo bash
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cd /opt/ltebox/tools
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./stop_ltebox
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./start_ltebox
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```
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Note: when terminated the testing session, you shall stop the EPC by "./stop_ltebox"
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* eNB launching (on the eNB host):
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~/openairinterface5g/cmake_targets/ran_build/build$ sudo ./lte-softmodem -O ../../../targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.band7.tm1.50PRB.usrpb210.conf (-E)
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eNB is using branch NR_RRCConfiguration patched with enb.diff
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* gNB launching (on the gNB host)
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~/openairinterface5g/cmake_targets/ran_build/build$ sudo ./nr-softmodem -O ../../../targets/PROJECTS/GENERIC-LTE-EPC/CONF/gnb.band78.tm1.106PRB.usrpn300.conf (-E)
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Note: gNB is using branch NR_RRC_PRACH_procedures patched with gnb.diff
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Status of the interoperability is as follows:
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- setup of the CP in 4G
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- setup of the measurements in 5G
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- Random access procedure initiation by the UE in the 5G cell
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- msg1, msg2, msg3 correctly exchanged and decoded
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[enb.conf](uploads/48bbbcc8016a33ce6d2faf62e3845005/enb.conf)
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[enb.diff](uploads/9763bd6d18256612d007251bc371ca46/enb.diff)
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[gnb.conf](uploads/59ae03deccb2186f544451034c297838/gnb.conf)
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[gnb.diff](uploads/bb756b2b165cb70f89405d7a8c4c36a8/gnb.diff)
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