nr nsa call flow
- NR (New Radio): NR refers to the radio access technology used in 5G networks. It's the air interface standard defined by the 3rd Generation Partnership Project (3GPP) for 5G wireless communication.
- NSA (Non-Standalone): NSA refers to Non-Standalone mode in 5G. In this mode, 5G networks are supported by existing 4G LTE infrastructure. It allows for the integration of 5G capabilities into existing LTE networks.
Now, if you're asking about the call flow in the context of NR NSA (5G Non-Standalone), it generally involves the following steps:
- UE (User Equipment) Attach to LTE: The user equipment (UE), such as a 5G-enabled smartphone, first attaches to the LTE network.
- Initial Registration in 5G: The UE initiates a registration process with the 5G network while still connected to LTE. The 5G core network is informed about the UE's capability to use 5G services.
- Bearer Setup: The 5G core network sets up a data bearer for the UE, enabling it to exchange data with the 5G radio network (NR) while maintaining the LTE connection.
- Data Transfer: Once the bearer is established, the data can be transferred over the 5G radio link. This allows the UE to benefit from the higher data rates and lower latency offered by the 5G NR.
- Handover to 5G: In scenarios where the UE moves into an area with 5G coverage, a handover process may occur. The connection is seamlessly transferred from LTE to 5G.
It's important to note that the call flow in a 5G NR NSA scenario involves interactions between both 4G LTE and 5G NR components. The specifics can vary based on the network architecture, deployment scenarios, and the capabilities of the devices involved. If you have a more specific aspect of the NR NSA call flow you're interested in, please provide additional details so I can offer a more targeted explanation.