UMTS

1.

1 point

How does HSDPA allow for higher bit rates in the downlink?

By using 8PSK together with an optimization of the scheduling scheme

By using 16QAM together with an optimization of the scheduling scheme

By increasing of the round trip delay

2.

1 point

Which downlink bit rate can be achieved using HSDPA?

20 Mbps

14 Mbps

24 MByte/s

3.

1 point

In UMTS the Core Network consists of

Circuit Switched Domain + Packet Switched Domain

Home Location Domain + Packet Switched Domain

Circuit Switched Domain + Home Location Domain

4.

1 point

In order to integrate WLAN into UMTS two new network elements have been
introduced:

WLAN Access Gateway, Packet Data Gateway

VLAN Access Gateway, Packet Data Gateway

WLAN Access Gateway, Data Access Gateway

5.

1 point

What does it mean if two vectors are orthogonal?

Orthogonal vectors are normal to each other

Orthogonal vectors are parallel to each other

Orthogonal vectors are opposite to each other

6.

1 point

Scenarios where WLAN hotspots are integrated in UMTS networks are

SIM based authentication via the WLAN

Use of the Extensible Authentication Protocol Pre-Shared Key (EAP-PSK) protocol

SIM based authentication in the hotspot

7.

1 point

Explain what macro diversity in UMTS does mean?

Coverage of cells overlaps, where a UE can be connected up to 3 NodeBs

Coverage of cells overlaps, where a UE can be connected up to 6 NodeBs

The presence of different natural obstacles

8.

1 point

UMTS Release 7 supports the following new feature:

Uplink data rate of 150 Mbps

Download data rate of 300 Mbps

High Speed Packet Access Evolution (HSPA+)

9.

1 point

UMTS uses periodically repeated frames with the following properties:

The duration of each frame is 10 s

The duration of each frame is 10 μs

The duration of each frame is 10 ms

10.

1 point

CDMA is a spread spectrum technology. This means that a narrowband signal is
spread in the frequency domain …

to generate a broadband signal with the same total power

Uplink data rate of 150 Mbps

to generate a narrowband signal with the same total powerto generate a broadband signal with half of the total power

11.

1 point

UMA means

Unlicensed Mobile Access

Unified Mobile Access

Licensed Mobile Access

12.

1 point

In UMTS Release 5 the IP Multimedia Subsystem common application servers are

IP Policy Service Switching Function

CAMEL Service Environment (CAMEL SE)

OSA Service Control Server

13.

1 point

In the UMTS Release 4 Network Architecture the MSC is split into

Media Gateway + Radio Network Controller

Media Gateway + Home Location Register

Media Gateway + MSC Server

14.

1 point

What are the tasks of the RNC?

Administration of the network resources for a single cell

Control of the usage of radio channels

Receiver power control

15.

1 point

Which duplex modes are used in UMTS?

Time division duplex mode

Frequency timed duplex mode

Frequency doubled duplex mode

16.

1 point

Which of the following is a logical role of the RNC in UMTS?

Controlling RNC

Draining RNC

Gateway RNC

17.

1 point

Which uplink bit rate can be achieved using HSUPA?

7,2 MByte/s

320 kbps

5,76 Mbps

18.

1 point

What is the reason for cell breathing?

Using an OVSF code

Loose cell’s bonds

Asynchronous CDMA

19.

1 point

What is a softer handover in UMTS?

Soft handover between different sectors of the same NodeB

Vertical handover

Same as soft handover

20.

1 point

What does CDMA mean?

Code Dedicated Multiple Authentication

Core Dedicated Multiple Access

Code Division Multiple Access