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Tag: 5G NAS

5G NAS and RRC Signalling Parameters for Voice Support

Introduction Voice Service support is always critical for any network. A user can initiate a Voice Call for normal conversation or for emergency support. In 5G there are multiple ways […]

October 21, 2021November 28, 2021 Author 5G, NAS Signalling, RRC Signalling, Signaling, VoNR

5G NAS Mobility Management – 5GMM

At 5GC, NAS Mobility Management (5GMM) procedures are responsible to keep track whereabouts of the UE, UE authentication and control integrity protection and ciphering. The 5GMM procedures also used by […]

July 27, 2021August 5, 2021 Author 5G Core, Call Flow, NAS Signalling, Open RAN, RRC, Telco Cloud

5G NAS – Authentication Failures Cause Values

In 5G Network, Non-access stratum (NAS) layer managed the PLMN specfic Network Failure and Authentication Failures between the 5G UE and 5G Core. Mutual authentication is a mandatory security procedure […]

July 11, 2021July 11, 2021 Author 5G, 5G Call Flow, 5G Core, NAS Signalling, Tech Fundas

5G NAS – Registration Reject Cause

In 5G NR, Registration is a NAS layer or 5G Mobility Management (5GMM) process and it is very much similar to the Attach Process in LTE except some of the […]

July 6, 2021July 11, 2021 Author 5G, 5G Call Flow, NAS Signalling, Tech Fundas

5G NAS – PDU Session Reject Cause Values and Reasons

5G connectivity service is named as PDU Session. A PDU session is very similar to an EPS bearer in LTE, except for the QoS model and the supported user data.  […]

June 27, 2021June 27, 2021 Author 5G, 5G Call Flow, 5G NR, NAS Signalling, Tech Fundas

5G NAS – Registration Request

5G NAS Registration Request is a 5GMM Procedure Initaiated by a UE. The network can resond as Registartion Accept in successful case or Registration Reject with specified cause value in […]

June 5, 2021August 5, 2021 Author 5G, 5G Call Flow, 5G NR
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