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WorksheetsEC6802 WIRELESS NETWORKS-UNIT-V (4G NETWORKS)
Total questions: 30
Worksheet time: 30mins
Which UE category supports 64 QAM on the uplink?
Only category 5
Only category 4
Only category 3
Category 3,4 and 5
What type of handovers is supported by LTE?
Hard handover only
Soft handover only
Hard and soft handover
Hard, soft and softest handover
What is the minimum amount of RF spectrum needed for an FDD LTE radio channel?
1.4 MHz
2.8 MHz
5 MHz
20 MHz
Which organization is responsible for developing LTE standards?
UMTS
3GPP
3GPP2
ISO
Which channel indicates the number of symbols used by the PDCCH?
PHICH
PDCCH
PBCH
PCFICH
How often can resources be allocated to the UE?
Every symbol
Every slot
Every subframe
Every frame
What is the largest channel bandwidth a UE is required to support in LTE?
10 MHz
20 MHz
1.4 MHz
5 MHz
In LTE, what is the benefit of PAPR reduction in the uplink?
Improved uplink coverage
Lower UE power consumption
Reduced equalizer complexity
Improved uplink coverage, lower UE power consumption and reduced equalizer
Which RLC mode adds the least amount of delay to user traffic?
Unacknowledged mode (UM)
Acknowledged mode (AM)
Low latency mode (LM)
Transparent mode (TM)
How much bandwidth is required to transmit the primary and secondary synchronization signals?
1.08 MHz
1.4 MHz
930 kHz
20 MHz
Which type of cell provides the best level of service for average subscribers?
Acceptance cell
Barred cell
Reserved cell
Suitable cell
With the normal cyclic prefix, how many symbols are contained in 1 frame?
7
140
12
40
What is the PBCH scrambled with?
Current frame number
Physical cell ID
UE’s CRNTI
Not scrambled
What is the length of the shortest possible PDCCH in bits?
144
288
72
576
What is the average uploading speed of 4G LTE network?
1-3 Gbps
2-5 Gbps
1-3 Mbps
2-5 Mbps
Which of the following is not a part of characteristic of 4G network?
Multirate management
Fully converged services
Software dependency
Diverse user devices
What does SGSN stands for?
Serial Gateway Supporting Node
Supporting GGSN Support Node
Supporting GPRS Support Node
Supporting Gateway Support Node
What location management feature is supported by 4G?
Concatenated Location Registration
Concurrent Location Register
Concatenated Management
Collated Location Registration
In 2007, ______ announced its plan to transmit its network to 4G standard LTE with joint efforts of Vodafone group.
Verizon Wireless
AirTouch
Netflix
V Cast
Hybrid ARQ is part of the ______ layer.
PDCP
RLC
MAC
PHY
What processing step combines multiple OFDM subcarriers into a single signal for transmission?
FFT
IFFT
RF combining
Channel mapping
Which property of OFDMA system allows adjacent subcarriers to be used without interference?
Orthogonality
Orthodoxy
Octagonality
Originality
When we divide band of Orthogonal Frequency Division Multiplexing (OFDM) into sub bands, it diminishes effects of ____
noise
collision
interference
signals absence
Common data rates of IEEE 802.11 OFDM are ______
18 Mbps
200 Mbps
50 Mbps
54 Mbps
MIMO stands for _______
Many input many output
Multiple input multiple output
Major input minor output
Minor input minor output
In MIMO, which factor has the greatest influence on data rates?
The size of antenna
The height of the antenna
The number of transmit antennas
The area of receive antennas
MIMO technology makes advantage of a natural radio wave phenomenon called _______
Reflection
Multipath
Refraction
Diffraction
Which of the following technology does not use MIMO?
4G
Wifi
WiMax
AMPS
_______ is a technique of transmit diversity used in UMTSS third-generation cellular systems.
STTD
SM
Collaborative Uplink MIMO
MU-MIMO
_______ is an additional open-loop MIMO technique considered by the WiMAX vendors.
STTD
SM
Collaborative Uplink MIMO
MU-MIMO
