name: NR
full_form: New Radio (5G Radio)
context: The UE NR security capabilities shall be indicated to the network using a new IE so that the support of EPS and NR algorithms can evolve independently. The UE shall send the UE NR security capabilities to the MME in Attach Request and (when possibly changing MME) TAU Request. To enable the usage of NR EN-DC with an MME that does not understand the UE NR security capabilities in the new IE, such an MME will drop the UE NR security capabilities and never save them in its UE context. An eNB that does not receive the UE NR security capabilities shall use the E-UTRAN security capabilities algorithms to create the supported UE NR security capabilities (see Annex E.10.3.2 for more details). An MME that has the UE NR security capabilities shall send the UE NR security capabilities to the eNB in the S1-Initial Context Set-up message. At S1-handover if the target MME receives the UE NR security capabilities from the source MME, the target MME shall send the UE NR security capabilities to the
description: New Radio (NR) refers to the radio access technology used in 5G networks. It is a key component of the 5G system architecture and provides the air interface for user equipment (UE) to connect to the network.
explanation: The context explicitly states that NR is the 'radio access technology used in 5G networks', positioning it as a technological standard defining how devices communicate within a 5G infrastructure.
section_title: E.3.4.3	Negotiation of security algorithms
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