Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

MODE3 > UMTS > Flashcards

UMTS Flashcards

Acronyms, Channel protocols, Codes (62 cards)

Start Studying
1
Q

The first release version of UMTS

A

Rel. 99

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What was introduced in Rel. 4?

A

Circuit Switched Media Gateways (CS-MGW)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What was introduced in Rel. 5?

A

The IP Multimedia Subsystem (IMS) and High Speed Downlink Packet Access (HSDPA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What was introduced in Rel. 7?

A

MIMO antenna technology and higher data speeds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Rel. 8-10 introduced what?

A

Long Term Evolution (LTE)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the three entities that make up the UMTS network?

A

UTRAN, GERAN, and CORE Network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What components make up the UTRAN?

A

NodeB and RNC

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What are the three domains in the CORE Network?

A

Circuit Switched Domain, Packet Switched Domain, Multi Media Domain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What does the Cell ID consist of?

A

RNC ID and the Short (Local) Cell ID

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is Hierarchical Cell Structure (HCS) used for?

A

HCS is a fake power applied to Cells by the Network that helps control which cells an UE will re-select to.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What are the two types of Power Control?

A

Forward and Reverse

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is Forward Closed Inner loop Power control?

A

Communication between the NodeB and UE to keep the Signal-Interference-Ratio (SIR) at the target level. The UE tells the NodeB to increase/decrease its power by 1dB up to 1500 times/second.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is Forward Closed Outer loop Power control?

A

The UE requests a different T-SIR from the NodeB if it has Frame Error Rate (FER) trouble.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is Reverse Open loop Power control?

A

The UE adjusts transmit power for preamble PRACHs based on the received CPICH (Common Pilot Channel).

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is Reverse Closed Inner loop Power control?

A

Communication between the NodeB and UE to keep the Signal-Interference-Ratio (SIR) at the target level. The NodeB tells the UE to increase/decrease its power by 1dB up to 1500 times/second.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is Reverse Closed Outer loop Power control?

A

TSIR adjustment at the RNC level based on FER trouble

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What are the two main components of a UE?

A

ME (Mobile Equipment), UICC (Universal Integrated Circuit Card)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What is contained on the UICC?

A

Universal Subscriber Identity Module (USIM), IMS Identity Module (ISIM)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the purpose of the Circuit Switched Media Gateway?

A

It establishes a P2P pipeline for voice traffic.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Is responsible for the delivery of data packets from and to the UEs within its geographical service area.

A

Serving GPRS Support Node (SGSN)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Geographical Service area for an SGSN.

A

Routing Area Code (RAC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Responsible for accessing the external network on the Packet Switched Domain

A

Gateway GPRS Support Node (GGSN)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Area that falls under the Routing Area (RA)

A

UTRAN Registration Area (URA)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Multi Media Domain consists of?

A

IP Multi Media Subsystem (IMS)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Technology used to spread signal
Direct Sequence Spread Spectrum (DSSS)
26
Technology used to spread data
Orthogonal Variable Spreading Factor (OVSF)
27
Duplexing technology that uses a different uplink and downlink frequency
Frequency Division Duplex (FDD)
28
Duplexing technology that uses the same frequency for uplink and downlink.
Time Division Duplex (TDD)
29
How wide is the signal for UMTS
5MHz total; the actual signal is only 3.84MHz
30
A radio channel in UMTS that is a pair of frequencies
UARFCN
31
The number of slots in a UMTS frame
15; numbered 0-14
32
The collected RF received after decoding the CPICH
Received Signal Code Power (RSCP)
33
The ratio between the received Energy per Chip of the CPICH and the total Noise level
Ec/No
34
Value that takes into account both RSCP and Ec/No
RSSI; RSSI = RSCP - Ec/No
35
What is the purpose of the Primary Synchronization Code?
Signals the start of a time slot
36
How many Secondary Synchronization Codes are there?
16
37
What is the function of Channelization Codes?
OVSF (Channelization) codes are used to spread the data. They separate connections to different users on the downlink. 256 in total.
38
Describe Downlink Scrambling Codes
The Primary Scrambling Code (PSC), also known as Gold Codes, they distinguish different sectors. 512 possible codes in total.
39
Describe Uplink Scrambling Codes
Also known as Gold Codes, they distinguish different UEs. 16+ million in total.
40
What are the three types of Channels in UMTS?
Physical, Transport, and Logical
41
Physical Channel used to acquire time slot sync on a Cell
Primary Synchronization Channel (P-SCH)
42
Physical Channel used to acquire frame sync and code group
Secondary Synchronization Channel (S-SCH)
43
Physical Channel that contains the Broadcast Control Channel Information
Primary Common Control Physical Channel (P-CCPCH)
44
Physical Channel that contains paging and Forward Access Channel parameters
Secondary Common Control Physical Channel (S-CCPCH)
45
Physical channel that broadcasts the cell radius and power
Common Pilot Channel (CPICH)
46
Physical Channel that contains Paging Channel and Forward Access Channel information
Paging Indicator Channel (PICH)
47
Physical Channel for acknowledgement
Acquisition Indicator Channel (AICH)
48
"Traffic Channel"
Dedicated Physical Data Channel (DPDCH)
49
Physical channel that sends radio control information (power control)
Dedicated Physical Control Channel (DPCCH)
50
Physical Channel that is used to send quick signaling information to a group/several users
Physical Downlink Shared Channel (PDSCH)
51
Physical Channel used to gain network access
Physical Random Access Channel (PRACH)
52
Physical Channel used to send short to medium sized packets
Physical Common Packet Channel (PCPCH)
53
Describe a RAKE receiver
Antenna that resolves and combines multi-path signals to reduce fading. Utilized during Soft Handoffs.
54
What are the five Radio Resource Connection States?
RRC_Idle; Cell_DCH; Cell_PCH; Cell_FACH; URA_PCH
55
What does SIB 1 transmit?
BCCH information
56
What does SIB 3 transmit?
Cell re-selection measurements
57
What does SIB 11 transmit?
Neighbors list
58
How many security algorithms does UMTS have?
10
59
What are the Authentication Vectors (Quintet)
RAND, XRES, CK, IK, AUTN
60
What are the cell re-selection measurements?
Sintersearch (different UARFCNS); Sintrasearch (same UARFCN); SsearchRAT (different Technologies); SsearchHCS
61
How does a UE measure for cell re-selection?
Squal and Srxlev
62
What is an inter-system handoff?
Handoff to a different Radio Access Technology

MODE3 (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions