LADN / DNN
LADN and DNN are new concept introduced in 5G. I have vague understanding about these that these concept replaces the concept of APN in LTE, but for long time the concept hasn't come clear to me.
Since these new concepts are introduced instead of using APN mainly to implement the concept of Network Slice, it would worth having some detailed picture of Network Slice. I wrote a separate note for Network Slicing.
LADN stands for Local Area Data Network, which is a feature in 5G networks that allows a local operator or enterprise to provide data services within a limited geographic area, such as a building, campus, or industrial site. The LADN feature enables local operators or enterprises to provide their own 5G data services with their own network infrastructure, while still being connected to the wider 5G network.
With LADN, a local operator or enterprise can set up a private 5G network to provide specific services tailored to their needs, such as industrial automation, smart building systems, or high-speed data transfers within a limited area. The LADN can be connected to the wider 5G network through a gateway to provide access to external data services and resources.
LADN can be deployed in different modes, including standalone mode, where the LADN network is independent of the wider 5G network, and dual connectivity mode, where the LADN network is connected to the wider 5G network for seamless mobility and access to external resources. The LADN feature is defined in the 3GPP standards for 5G networks and is expected to play a significant role in enabling new use cases and applications for 5G.
DNN can also refer to the Data Network Name, which is a new feature in 5G networks that is used to support network slicing
Network slicing is a technique used in 5G to divide a physical network infrastructure into multiple virtual networks, each with its own resources and quality of service (QoS) requirements. Each virtual network is identified by a unique Data Network Name (DNN), which is used by the 5G core network to route traffic to the appropriate network slice.
For example, a mobile operator can create a dedicated network slice for a particular enterprise customer with specific QoS requirements, and assign a unique DNN to that network slice. This enables the enterprise customer to have a dedicated and secure network that is customized to their specific needs.
The terms DNN (Data Network Name) and LADN (Local Area Data Network) are related concepts that are used to support network slicing and provide customized services to different types of users and devices.
A LADN is a virtual network slice that is optimized for use within a specific geographical area, such as a building, campus, or factory. It is designed to provide low-latency, high-bandwidth connectivity to local devices and applications, and can be customized with specific QoS requirements.
A DNN, on the other hand, is a unique identifier used by the 5G core network to route traffic to a specific network slice. In the context of a LADN, the DNN would be used to identify and route traffic to the LADN network slice.
For example, a factory might require a dedicated LADN network slice to support real-time monitoring and control of machines and devices on the factory floor. The LADN could be customized with specific QoS requirements to ensure low-latency, high-bandwidth connectivity, and a unique DNN would be assigned to the LADN to enable efficient routing of traffic to and from the factory.
Overall, the DNN and LADN are related concepts that are used in 5G to provide customized network services and support efficient use of network resources.
In LTE, APN (Access Point Name) is used as an identifier for a specific network operator's packet data network. It is used by the mobile device to connect to the packet data network and access the internet and other services.
In 5G, the DNN (Data Network Name) is the counterpart of APN in LTE. It is used to identify and route traffic to a specific network slice, which can be customized with specific QoS requirements for different services and applications.
Like the APN, the DNN enables efficient routing of traffic within the 5G network, and allows for customized network services to be provided to different users and devices. However, the DNN goes beyond the functionality of the APN by enabling dynamic allocation of network resources to different network slices based on their specific QoS requirements, which enables more efficient use of network resources and better performance for different services and applications.