Sage-Tips

What is Iur interface?

The Iur interface enables the exchange of signalling information between two RNCs, one or more Iur Data stream may also exist. The signalling information across the Iur interface is called Radio Network Subsystem Application Part (RNSAP). The RNSAP is terminated at both ends of the Iur interface by an RNC.

What is the air interface in a 3G network?

WCDMA is the most widely adopted air interface standard for third generation (3G) mobile networks. 3G networks have been designed to supersede second generation (2G) networks, i.e. GSM (Europe and large parts of the world), cdmaOne (Americas), D-AMPS (Americas), and PDC (Japan).

Which is the multiple access technology used in UMTS?

W-CDMA
UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.

Is 3G GSM or CDMA?

Difference between GSM and CDMA

Serial No.	GSM	CDMA
4. Data speed rate	42Mbps in HSPA (3G).	3.6Mbps in CDMA.
5.Features	GSM supports transmitting data and voice both at once.	CDMA does not support this feature.
6. Customer Information	Stored in a SIM card.	Stored in a headset or phone.

What is the interface between RNC and MSC?

The interface between the RNC and the Circuit Switched Core Network (CS-CN) is called Iu-CS and between the RNC and the Packet Switched Core Network is called Iu-PS. Other interfaces include Iub (between the RNC and the Node B) and Iur (between RNCs in the same network).

What is Abis interface in GSM?

The interface within the GSM architecture, between the BTS (Base Transceiver Station) and BSC (Base Station Controller). This interface is usually configured using a 16Kbps slot structure.

What is the air interface in GSM?

The Um interface is the air interface for the GSM mobile telephone standard. It is the interface between the mobile station (MS) and the Base transceiver station (BTS). It is called Um because it is the mobile analog to the U interface of ISDN.

What is GSM interface?

GSM Network Interfaces connect between different elements in the 2G (GSM) mobile communication network, which is based on the SS7 protocol stack. The connection between the GPRS system and the GSM core network (NSS) also uses the SS7 protocol.

Can UMTS networks easily work with the existing GSM GPRS networks?

The existing GSM/GPRS operator can reuse the components of GSM network to the greatest extent of possible. In supporting UMTS services, we add some new entities in GSM/GPRS network infrastructure, such as Node B and Radio Network Controller (RNC).

What is spreading factor in UMTS?

The Spreading Factor is the ratio of the chips (UMTS = 3.84Mchips/s) to baseband information rate. Spreading factors vary from 4 to 512 in FDD UMTS. Spreading process gain can in expressed in dBs (Spreading factor 128 = 21dB gain).

What is 2G GSM network interfaces?

GSM Network Interfaces 2G GSM uses defined standard interfaces to connect the network entities to enable interoperability for equipment different manufacturers.

What is the difference between a interface between BTS and BSc?

A interface between BTS and BSC defines the channel allocation, power measurement information etc. Gb interface connects BSCs to SGSN. Gn interface is used between GSNs of same PLMN to exchange user profile when the user moves from one SGSN to another.

What are the types of GSM network interfaces?

This page of GSM tutorial covers GSM network interfaces which includes Um, A, Asub, Abis, B, C, D, E, F and G interfaces. Figure-1 depicts all the GSM network interfaces between GSM subsystems.

What is the GD interface between SGSN and MSC/VLR?

Gs interface between SGSN and MSC/VLR is used to perform paging request of circuit switched GSM call for combined attachment procedure. Gd interface between SMS-Gateway (SMS-GMSC) and SGSN is used to exchange short message service (SMS) messages. All GSNs are connected over a GPRS backbone network over IP.