5G
- Created by: Omsteruk
- Created on: 21-11-20 13:52
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- 5G
- 3GPP is defining both a new 5G core network, referred to as 5GC, as well as a new radio access technology called 5G “New Radio” (NR).
- Sub-1GHz bands are suitable to support IoT services and extend mobile broadband coverage from urban to suburban and rural areas.
- 5G has three major use case classes: enhanced Mobile Broadband (eMBB), mIoT and ultra-reliable low latency (URLLC).
- 5G will provide more advanced and enhanced capabilities compared to 4G LTE (IMT-Advanced).
- Ultra reliability and low latency
- In a standalone scenario, the 5G NR or the
evolved LTE radio cells and the core network are
operated alone.
- This means that the NR or evolved LTE radio cells are used for both control plane and user plane.
- Three variations of SA are being defined in 3GPP:
- • Option 1 using EPC and LTE eNB access (i.e. as per current 4G LTE networks);
- Option 2 using 5GC and NR gNB access;
- • Option 5 using 5GC and LTE ng-eNB access
- Option 2 using 5GC and NR gNB access;
- • Option 1 using EPC and LTE eNB access (i.e. as per current 4G LTE networks);
- In non-standalone (NSA) scenario, the NR radio
cells are combined with LTE radio cells using dualconnectivity to provide radio access and the core
network may be either EPC or 5GC depending on
the choice of operator.
- Dual Connectivity: Operation where a given UE consumes radio resources provided by at least two different network points (e.g. NR access from gNB and LTE access from eNB).
- Option 3 using EPC and an LTE eNB acting
as master and NR en-gNB acting as
secondary;
- • Option 4 using 5GC and an NR gNB acting as master and LTE ng-eNB acting as secondary; and
- • Option 7 using 5GC and an LTE ng-eNB acting as master and an NR gNB acting as secondary.
- • Option 4 using 5GC and an NR gNB acting as master and LTE ng-eNB acting as secondary; and
- NSA 5G uses a 5G Radio Access Network but a 4G core network, while SA 5G technology uses both 5G core and radio networks.
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