5G is a new generation of wireless communication technology that promises faster speed, lower latency, and higher capacity. However, 5G is not a single technology, but a combination of different technologies and standards. One of the key aspects of 5G is how it is deployed on the network. There are two main deployment modes for 5G: standalone (SA) and non-standalone (NSA).
Standalone (SA) mode means that 5G uses its own core network and base stations, without relying on any existing 4G infrastructure. This mode allows 5G to fully utilize its new features and capabilities, such as network slicing, ultra-reliable low-latency communication (URLLC), and massive machine-type communication (mMTC). However, SA mode also requires more investment and time to build a new network from scratch.
Non-standalone (NSA) mode means that 5G uses the existing 4G core network and base stations, while adding some new 5G base stations to provide faster data transmission. This mode allows 5G to quickly provide enhanced mobile broadband (eMBB) service to users, without changing much of the existing network. However, NSA mode also limits some of the advanced features and functionalities of 5G, such as network slicing and URLLC.
Both SA and NSA modes have their advantages and disadvantages, depending on the needs and preferences of different operators and users. Some operators may choose to deploy NSA mode first to gain a competitive edge in the market, while others may opt for SA mode to offer more innovative and diverse services. Ultimately, both modes are expected to coexist and complement each other in the future 5G network.