What is the need for Iu interface?

Iu interfaces carry user traffic (such as voice or data) as well as control information (see § Protocols), and Iur interface is mainly needed for soft handovers involving 2 RNCs though not required as the absence of Iur will cause these handovers to become hard handovers.

Which is the application protocol in the control plane of the radio network layer of the IUR?

The control plane is used for all UMTS-specific control signaling. It includes the application protocol (i.e., radio access network application part (RANAP) in Iu, radio network subsystem application part (RNSAP) in Iur and node B application part (NBAP) in Iub).

What are the functions of RNC node B in UMTS?

The RNC undertakes the radio resource management and some of the mobility management functions, although not all. It is also the point at which the data encryption / decryption is performed to protect the user data from eavesdropping. Node B: Node B is the term used within UMTS to denote the base station transceiver.

What are the main functions of RNC?

A radio network controller (RNC) is a governing element in the UMTS radio access network (UTRAN) and is responsible for controlling the Node Bs that are connected to it. The RNC carries out radio resource management, some mobility management functions and encrypts data before it is sent to and from the mobile.

What are the interfaces in UMTS?

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 the responsibility of Node B?

A Node B is responsible for radio transmission and reception in one or more cells to/from the user equipment (UE). The logical architecture for Node B is shown in Figure 15.22.

What is the main function of Node B?

Node B is a WCDMA/UMTS term for a radio base station receiver, as defined by the 3GPP. It provides radio coverage and converts data between the radio network and the RNCs.

What is eNB in 5G?

Node B is the radio base station for UMTS networks (Universal Mobile Telecommunication System), eNodeB or eNB is the radio network node for LTE networks (Long Term Evolution), and gNB is the radio network node for 5G NR networks.

What is Gnode B in 5G?

gNodeB is a 3GPP-compliant implementation of the 5G-NR base station. It consists of independent Network Functions, which implement 3GPP-compliant NR RAN protocols namely: PHY, MAC, RLC, PDCP, SDAP, RRC, NRAP see Figure below. gNodeB 3GPP protocol stack for Control Plane.

What is the Node B Application Protocol ( NBAP )?

The Node B application protocol (NBAP) is a Radio Network Layer control plane protocol at the Iub interface.

Which is NBAP protocol does UTRAN RNC use?

Node-B Application Protocol (NBAP) NBAP is the protocol for signaling between UTRAN RNC and NodeB over Iub interface. The Iub interface can be either ATM -based or IP -based. In ATM-based Iub, NBAP is carried inside SAAL over ATM AAL2. In IP-based Iub, NBAP is carried inside SCTP over IP.

What are the UMTS protocols for user plane?

UMTS PS protocols – user plane • Additional protocol PDCP • PDCP – compression of IP headers • PDCP may or may not be used 11 12.

Where does NBAP go in an IUB interface?

NBAP is the protocol for signaling between UTRAN RNC and NodeB over Iub interface. The Iub interface can be either ATM -based or IP -based. In ATM-based Iub, NBAP is carried inside SAAL over ATM AAL2. In IP-based Iub, NBAP is carried inside SCTP over IP.