What is Non-Access Stratum protocol?

The Non-Access Stratum is a set of protocols in the Evolved Packet System. The NAS is used to convey non-radio signalling between the User Equipment (UE) and the Mobility Management Entity (MME) for an LTE/E-UTRAN access.

What is access stratum Signalling?

The access stratum (AS) in computer networking and telecommunications is a functional layer in the UMTS and LTE wireless telecom protocol stacks between radio network and user equipment.

Which radio layers does the as access stratum layer cover?

The protocol layers below NAS on E-UTRAN-Uu and S1-MME are called the Access Stratum (AS). The AS protocols on E-UTRAN-Uu (RRC, PDCP, RLC, MAC, and the physical LTE layer) implement Radio Resource Management and support the NAS protocols by transporting the NAS messages across the E-UTRAN-Uu interface.

What is NB N1 mode in 5G?

N1 mode: A mode of a UE allowing access to the 5G core network via the 5G access network.

What is EMM and ESM in LTE?

In LTE, the NAS protocol is used between the User Equipment and the MME in order to facilitate EPS Mobility Management and EPS Session Management procedures. Consequently, NAS protocol messages are classified as EMM or ESM, both of which can potentially be found in a single NAS message.

What is PDCP in LTE?

From Wikipedia, the free encyclopedia. Packet Data Convergence Protocol (PDCP) is specified by 3GPP in TS 25.323 for UMTS, TS 36.323 for LTE and TS 38.323 for 5G. PDCP is located in the Radio Protocol Stack in the UMTS/LTE/5G air interface on top of the RLC layer.

What is the interface between utran and CN?

There are four interfaces connecting the UTRAN internally or externally to other functional entities: Iu, Uu, Iub and Iur. The Iu interface is an external interface that connects the RNC to the Core Network (CN). The Uu is also external, connecting Node B with the User Equipment (UE).

What is Non-Access Stratum in LTE?

Non-access stratum (NAS) is a functional layer in the UMTS and LTE wireless telecom protocol stacks between the core network and user equipment. This layer is used to manage the establishment of communication sessions and for maintaining continuous communications with the user equipment as it moves.

What is 3GPP 5G NR?

5G NR (New Radio) is a new radio access technology (RAT) developed by 3GPP for the 5G (fifth generation) mobile network. It was designed to be the global standard for the air interface of 5G networks. The study of NR within 3GPP started in 2015, and the first specification was made available by the end of 2017.

What is ECM and EMM?

ECM stands for Entitled Control Message while EMM stands for Entitled Management Message. ECM EMM are the two most important part of CA System or Conditional Access System. ECM and EMM are send with the Transport Stream to the subscriber end.

What is EMM deregistered?

The UE is in EMM DEREGISTERED state when it is switched on. At that time MME does not have knowledge of UE at cell or tracking area level as UE is not registered yet. In this state UE cannot be paged and it cannot have any data traffic etc. because there are no user planes established in this state.

What is a PDCP in 3GPP?

Packet Data Convergence Protocol (PDCP) is specified by 3GPP in TS 25.323 for UMTS, TS 36.323 for LTE and TS 38.323 for 5G. PDCP is located in the Radio Protocol Stack in the UMTS/LTE/5G air interface on top of the RLC layer.

What is the Non-Access Stratum?

What is the Non-Access Stratum and its protocols EMM and ESM?

Author: Frédéric Firmin, 3GPP MCC. This article gives an overview of the Non-Access Stratum (NAS) and its protocols EMM and ESM. The Non-Access Stratum is a set of protocols in the Evolved Packet System. The NAS is used to convey non-radio signalling between the User Equipment (UE) and the Mobility Management Entity (MME) for an LTE/E-UTRAN access.

What is the 3GPP TS for LTE access?

NAS: 3GPP TS 23.401 defines the architecture of the EPC for an LTE access 3GPP TS 24.301 defines the protocol details of the NAS 3GPP TS 24.008 defines inter-system mobility between LTE and 2G/3G

What is efefnasconfig (Non Access Stratum configuration)?

EFNASCONFIG (Non Access Stratum Configuration): Logically: NAS signalling priority value: Reserved (NAS signalling low priority is not used) NMO I Behaviour value: “NMO I, Network Mode of Operation I” indication is not used Attach with IMSI value: attach with IMSI is performed when moving to a non-equivalent PLMN