End-to-end control plane signaling to achieve a 5G SA connection, UE registration and PDU session establishment with the CN, as well as some basic user-plane traffic tests have been validated so far using the Quectel module and Huawei Mate 30 pro and partially validated with SIMCOM module. In terms of interoperability with different 5G Core Networks, so far this setup has been tested with:
End-to-end control plane signaling to achieve a 5G SA connection, UE registration and PDU session establishment with the CN, as well as some basic user-plane traffic tests have been validated so far using SIMCOM/Quectel modules and Huawei Mate 30 pro. In terms of interoperability with different 5G Core Networks, so far this setup has been tested with:
@@ -23,20 +23,57 @@ At the moment of writing this document interoperability with the following COTS
-[Free CN](https://www.free5gc.org/)
## 1.1 gNB build and configuration
At the moment of writing this document, most of the code to support the SA setup is not merged into develop branch yet, but it is accessible through the following branches:
## 1.1 gNB build and configuration
To get the code and build the gNB executable:
- NR_SA_F1AP_5GRECORDS
- develop-NR_SA_F1AP_5GRECORDS (up-to-date with latest develop branch)
./build_oai -I-w USRP #For OAI first time installation only to install software dependencies
./build_oai --gNB-w USRP
```
A reference configuration file for the gNB is provided [here](https://gitlab.eurecom.fr/oai/openairinterface5g/-/blob/develop-NR_SA_F1AP_5GRECORDS/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf).
A reference configuration file for the gNB is provided [here](https://gitlab.eurecom.fr/oai/openairinterface5g/-/blob/develop/targets/PROJECTS/GENERIC-NR-5GC/CONF/gnb.sa.band78.fr1.106PRB.usrpb210.conf).
In the following, we highlight the fields of the file that have to be configured according to the configuration and interfaces of the Core Network. First, the PLMN section has to be filled with the proper values that match the configuration of the AMF and the UE USIM.
...
...
@@ -58,27 +95,29 @@ In the following, we highlight the fields of the file that have to be configured
}
);
});
```
```
Then, the source and destination IP interfaces for the communication with
the Core Network also need to be set as shown below.
```bash
////////// MME parameters:
amf_ip_address =({ ipv4 ="192.168.70.132";
ipv6 ="192:168:30::17";
active ="yes";
preference ="ipv4";
}
);
NETWORK_INTERFACES :
{
GNB_INTERFACE_NAME_FOR_NG_AMF ="demo-oai";
GNB_IPV4_ADDRESS_FOR_NG_AMF ="192.168.70.129/24";
GNB_INTERFACE_NAME_FOR_NGU ="demo-oai";
GNB_IPV4_ADDRESS_FOR_NGU ="192.168.70.129/24";
GNB_PORT_FOR_S1U = 2152;# Spec 2152
};
```
////////// AMF parameters:
amf_ip_address =({ ipv4 ="192.168.70.132";
ipv6 ="192:168:30::17";
active ="yes";
preference ="ipv4";
}
);
NETWORK_INTERFACES :
{
GNB_INTERFACE_NAME_FOR_NG_AMF ="demo-oai";
GNB_IPV4_ADDRESS_FOR_NG_AMF ="192.168.70.129/24";
GNB_INTERFACE_NAME_FOR_NGU ="demo-oai";
GNB_IPV4_ADDRESS_FOR_NGU ="192.168.70.129/24";
GNB_PORT_FOR_S1U = 2152;# Spec 2152
};
```
In the first part (*amf_ip_address*) we specify the IP of the AMF and in the second part (*NETWORK_INTERFACES*) we specify the gNB local interface with AMF (N2 interface) and the UPF (N3 interface).
### **gNB configuration in CU/DU split mode**
...
...
@@ -87,13 +126,13 @@ For the configuration of the gNB in CU and DU blocks the following sample config
At the point of writing this document the control-plane exchanges between the CU and the DU over *F1-C* interface have been validated. The integration of *F1-U* over gtp-u for the support of data plane traffic is ongoing.
## 1.2 OAI 5G Core Network installation and configuration
The instructions for the installation of OAI CN components (AMF, SMF, NRF, UPF) using docker compose can be found [here](https://gitlab.eurecom.fr/oai/cn5g). Below are some complementary instructions which can be useful for the deployment.
The instructions for the installation of OAI CN components (AMF, SMF, NRF, UPF) using docker compose can be found [here](https://gitlab.eurecom.fr/oai/cn5g).
## 1.3 Execution of SA scenario
## 1.3 Execution of SA scenario
After having configured the gNB, we can start the individual components in the following sequence:
- Launch Core Network
- Launch 5G Core Network
- Launch gNB
- Launch COTS UE (disable airplane mode)
...
...
@@ -101,55 +140,54 @@ The execution command to start the gNB (in monolithic mode) is the following:
The SA setup with OAI UE has been validated with RFSIMULATOR for the moment. The control plane for the successful UE registration and PDU Session establishment has been verified with OAI and Nokia SA Box CNs. User-plane traffic validation after the establishment of the 5G connection is still pending for this setup.
The SA setup with OAI UE has been validated with **RFSIMULATOR**. Both control plane and user plane for the successful UE registration and PDU Session establishment has been verified with OAI and Nokia SA Box CNs.
In the following, we provide the instructions on how to build, configure and execute this SA setup.
In the following, we provide the instructions on how to build, configure and execute this SA setup.
### NAS configuration for the OAI UE
The NAS configuration parameters of the OAI UE can be set as input parameters, configuration file or can be hardcoded. More specifically:
- SUCI (*Subscription Concealed Identifier*)
- USIM_API_K and OPc keys
- NSSAI (*Network Slice Assistance Information*)
- DNN (*Data Network Name*)
As example, in source file ***openair3/UICC/usim_interface.c*** the values can be hardcoded/edited in the following lines:
For interoperability with OAI or other CNs, it should be ensured that the configuration of the aforementioned parameters match the configuration of the corresponding subscribed user at the core network.
Hardcoding of the USIM information will soon be substituted with parsing those parameters from a configuration file.
## 2.1 Build and configuration
To build the gNB and OAI UE executables:
```bash
cd cmake_targets
./build_oai -I#For OAI first time installation only to install software dependencies
# Note: For OAI first time installation please install software dependencies as described in 1.1.
./build_oai --gNB--nrUE-w SIMU
```
The gNB configuration can be performed according to what is described in section 1.1, using the same reference configuration file as with the RF scenario.
### NAS configuration for the OAI UE
At the moment, the NAS configuration parameters of the OAI UE are hardcoded in ***openair3/NAS/NR_UE/nr_nas_msg_sim.c***. More specifically:
- The SUCI (*Subscription Concealed Identifier*) corresponding to default IMSI 2089900007487 is hardcoded in functions *generateRegistrationRequest()* and *generateIdentityResponse()* through the following lines:
- The NSSAI (*Network Slice Assistance Information*) and DNN (*Data Network Name*) are hardcoded in function *generatePduSessionEstablishRequest()*
```bash
uint8_t nssai[]={1,0,0,1}; //Corresponding to SST:1, SD:1
uint8_t dnn[4]={0x4,0x6f,0x61,0x69}; //Corresponding to dnn:"oai"
```
For interoperability with OAI or other CNs, it should be ensured that the configuration of the aforementioned parameters match the configuration of the corresponding subscribed user at the core network.
Hardcoding of the USIM information will soon be substituted with parsing those parameters from a configuration file.
## 2.2 OAI 5G Core Network installation and configuration
The instructions for the installation of OAI CN components (AMF, SMF, NRF, UPF) using docker compose can be found [here](https://gitlab.eurecom.fr/oai/cn5g).
## 2.2 Execution of SA scenario
## 2.3 Execution of SA scenario
The order of starting the different components should be the same as the one described in section 1.3.
The order of starting the different components should be the same as the one described in section 1.3.
