Test your 3G Knowledge

September 2, 2020

Welcome to your Test Your 3G Knowledge

What is UMTS chip rate?

3.84MHz

3.84KHz

5MHz

What is the maximum SF are available in Downlink?

256

512

521

How many channelization codes are available in Uplink?

512

256

4

How many scrambling codes in DL?

512

256

1024

How many scrambling codes in UL?

256

512

More than 10^6

What is the maximum number of Cells in Active Set?

3

4

8

How many fingers does a UE rake receiver have?

4

5

3

What is the frequency of inner power control (how fast is power control)?

100 times a second

1500 times a second.

What is the frequency of outer power control (how fast is power control)?

100 times a second.

1500 times a second

What is the interface between UE to NodeB?

Uu

Iub

Iur

What is the interface between RNC to RNC?

Uu

Iub

Iur

How many OVSF code spaces are available?

512

256

1024

What is UMTS frame structure duration?

1 msec

10 msec

1 sec

Are scrambling codes orthogonal?

Yes

No

..... are used for spreading and despreading of the signals

Channelization Codes

Scrambling Codes

....... occurs when 2 cells in the active set belong to same Node-B

Hard HO

Soft HO

Softer HO

Cells that the UE has detected but are not known to the network as yet (missing neighbor likely).

Active Set

Monitored Set

Detected Set

Pilot Pollution is A cell that has high signal strength at a location but is not part of the active set.

False

True

What is the typical/most common bit rate that a voice call uses?

12.2 Kbps

14 Kbps

64 Kbps

What is the reason of missing Neighbors?

AS size is small

Pilot Pollution

Neighbors are not defined

All of the Above

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