endc 5g
EN-DC enables the simultaneous connection of a device to both LTE (Long-Term Evolution) and NR (New Radio) networks. This is particularly useful during the initial phases of 5G deployment when NR coverage may be limited. Here is a technical explanation of EN-DC:
- LTE (E-UTRA):
- In LTE, user devices (UEs) communicate with the network using E-UTRA (Evolved Universal Terrestrial Radio Access) technology.
- LTE provides high data rates and coverage, making it a well-established technology.
- NR (New Radio):
- NR is the radio access technology for 5G networks, designed to provide higher data rates, lower latency, and improved connectivity compared to LTE.
- NR operates in frequency ranges designated for 5G, including both sub-6 GHz and mmWave bands.
- EN-DC Dual Connectivity:
- EN-DC allows a user device to be simultaneously connected to both LTE and NR networks.
- The LTE connection serves as the anchor, providing continuous connectivity and ensuring a seamless handover between LTE and 5G NR as the device moves between coverage areas.
- Deployment Scenarios:
- EN-DC can be deployed in two main scenarios: Non-Standalone (NSA) and Standalone (SA).
- Non-Standalone (NSA): In this mode, the LTE network provides the control plane, and NR is used for data plane services. The LTE anchor cell controls mobility, while NR provides additional data capacity.
- Standalone (SA): In SA mode, both control and data planes are handled by the 5G NR network. This is a more advanced deployment scenario as it does not rely on the existing LTE infrastructure.
- EN-DC can be deployed in two main scenarios: Non-Standalone (NSA) and Standalone (SA).
- Carrier Aggregation:
- EN-DC involves carrier aggregation, where the device aggregates carriers from both LTE and NR networks, enhancing overall data rates.
- Handover and Mobility:
- The system manages handovers between LTE and NR seamlessly to provide continuous connectivity as the device moves between coverage areas.