5G SA mode is a term used to describe the standalone operation of the 5G network. In this mode, the 5G network is not reliant on any other network infrastructure and can operate independently.
This new architecture was introduced to improve the performance and efficiency of 5G networks, as well as to provide more flexibility in the deployment and operation of 5G networks.
In the past, 5G networks were based on a Non-Standalone (NSA) architecture, which relied on existing 4G networks as its core. This meant that the 5G network had to be built on top of the existing 4G network, which caused a lot of problems. For instance, 4G networks had limited capacity and could not support the increased speeds and data rates of 5G networks. Additionally, the integration of the two networks was not seamless, which led to delays and other issues.
In contrast, 5G Standalone mode is a completely new type of architecture. It is designed to be an independent network that does not rely on existing 4G networks. This means that 5G networks can be deployed independently, without having to build on top of an existing 4G network. This allows 5G networks to provide higher speeds and data rates, as well as more flexibility in terms of deployment and operation.