Introduction to LTE and 4G WirelessModule 1 MCQ Answers

INTRODUCTION TO LTE AND 4G WIRELESS

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Global Wireless Market Trends and Evolution

SECTION 1 GLOBAL WIRELESS MARkET TREnDS AnD EVOLUTIOn

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SECTION 1 GLOBAL WIRELESS MARkET TREnDS AnD EVOLUTIOn

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Self Assessment Multiple Choice Questions Factors Inuencing Revenues.....

Q1 What will be the approximate annual growth rate of global mobile subscriptions by 2013? a)

50% per year

b)

30% per year

c)

10% per year

d)

2% per year

Q2 What will be the most important source of retail revenues for mobile operators globally globally by 2013? a)

Voice

b)

SMS

c)

Non-messaging mobile data

d)

Handset sales

Q3 Approximately Approximatel y how much of ARPU will be represented by mobile data services services by 2013, on a global basis? a)

20%

b)

30%

c)

50%

d)

70%

Q4 Approximately Approximatel y how much of mobile mobile operators’ operators’ total revenues revenues will be accounted for by mobile data services in 2013? a)

One quarter

b)

One third

c)

Half

d)

Three-quarters

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Introduction to LTE and 4G Wireless

Q5 Which element of mobile operators’ revenue streams is likely represent a signicant incremental revenue opportunity over the period 2007-2013?

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a)

Wholesale services to third parties

b)

Retail voice airtime

c)

Retail data services

d)

Termination and interconnect revenues

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Self Assessment Multiple Choice Questions: Factors Inuencing Protability.....

Q1 Which region boasts the highest EBITDA levels, as a % of revenue? a)

Africa

b)

Asia

c)

Europe

d)

Americas

Q2 Which is the fastest way to maintain EBITDA levels in the short-term? a)

Increase prices

b)

Implement network-sharing agreements

c)

Cut discretionary costs

d)

Promote on-net tariffs

Q3 What is the approximate ratio of capital expenditure to revenue among mobile network operators globally? a)

Less than 10%

b)

Between 10% and 25%

c)

More than 25%

d)

More than 50%

Q4 What is generally considered to be the long-term impact of price wars on operators’ revenue levels? a)

No signicant change to revenue levels

b)

Helps increase revenue over the long-term

c)

Signicantly reduces revenue over the long-term

d)

Defers the revenue opportunity

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Q5 How does the introduction of at-rate tariffs affect mobile operators’ protability?

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a)

Increases protability over the short-term

b)

Increases protability over the long-term

c)

No signicant change to protability

d)

Signicantly reduces protability over the long-term

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Self Assessment Multiple Choice Questions Global Wireless Broadband Market Trends.....

Q1 Which are the fastest-growing mobile broadband markets in the world? a)

US and Canada

b)

Russia and the CIS

c)

India and China

d)

South Korea and Japan

Q2 On a global basis, which was the predominant Internet access mechanism in 2009? a)

Fixed

b)

Mobile (2G)

c)

Portable

d)

Smartphones

Q3 What is likely to be the short-term effect on operators’ protability of offering subsidies on smartphones and other high-end devices? a)

Signicant increase in protability due to increased data usage

b)

Signicant decline in protability

c)

No change to protability

d)

Small decline in protability

Q4 Where were the rst commercial deployments of LTE scheduled to take place? a)

2013

b)

2012

c)

2011

d)

2010

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Q5 What technology was deployed as a means of achieving high-speed mobile broadband without the capital expenditure of LTE?

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a)

HSUPA

b)

HSPA+

c)

HSDPA

d)

CDMA 1x EV-DO Rev. B

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SECTION 1 PRACTICE PAPER

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3G Wireless Systems and Evolution

SECTION 2 3G WIRELESS SYSTEMS AND EVOLUTION

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Self Assessment Multiple Choice Questions Mobile Data Revenues and Pricing, a Global View.....

Q1 which of the following accurately states the current trend for technology migration ? a)

HSPA – EV_DO

b)

EV_DO – HSPA

c)

HSPA – WiMAX

d)

WiMAX – EV_DO

Q2 Many operators have seen a huge surge in data trafc largely due to …? a)

free SMS

b)

subsidised data devices

c)

at rate data plans

d)

longer contract periods

Q3 According to the UK regulator OFCOM, what percentage of mobile broadband data use takes place in the subscriber home ? a)

10%

b)

50%

c)

75%

d)

85%

Q4 Some operators run both xed and mobile networks, in this case the broadband strategy that they are most likely to pursue is.. a)

focus on discounted mobile data subscriptions

b)

drive the user toward a FMC (xed – mobile convergence) type subscription

c)

bundled mobile voice and data subscriptions

d)

increased price differential between xed and mobile services

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Q5 Mobile operators will seek to differentiate their broadband service offerings, which one of the following may be considered a valid differentiator ? a)

handset choice

b)

operator location

c)

broadband speed

d)

customer segmentation

Q6 Which one of the following broadband charging tariff models may complicate the service offer or require the subscriber to accurately judge their usage pattern ? a)

additional service fees and add-on charges

b)

service speed

c)

basic service cost (i.e. at rate monthly fee)

d)

equipment type

Q7 Locking mobile broadband customers in to longer term contracts often reduces churn and…?

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a)

helps with device subsidies

b)

reduces operator capex

c)

increases operator opex

d)

increases market share

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Self Assessm ent Multipl e Choic e Question s Backgro und to 3G Development .....

Q1 3G services are mainly delivered to end-users by: a)

equipment manufacturers

b)

network operators

c)

independent service providers

d)

other end-users

Q2 3G networks are intended to be optimized for the delivery of: a)

voice services

b)

a range of non-voice services

c)

SMS

d)

video

Q3 The target bit rate for pedestrian access to 3G networks is: a)

512Kbps

b)

384Kbps

c)

144Kbps

d)

2Mbps

Q4 3GPP2 is primarily concerned with: a)

Developing 4G standards

b)

Developing 3G standards based on CDMA networks

c)

Developing 3G standards based on GSM/UMTS networks

d)

Harmonizing the global development of CDMA-based 3G networks

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Q5 3GPP and 3GPP2 are working within which common framework:

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a)

UMTS

b)

IMT-2000

c)

CDMA

d)

GSM

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Self Assessm ent Multipl e Choic e Question s 3GPP Specifcations and Evolution.....

Q1 Which release of the 3GPP specications was concerned with the evolution towards an all-IP core network architecture? a)

Release ‘99

b)

Release 4

c)

Release 5

d)

Release 6

Q2 Proposals for core network architecture and service network architecture evolution were contained within which 3GPP release? a)

Release 5

b)

Release 6

c)

Release 7

d)

Release 8

Q3 LTE was initially developed to meet which peak data rates in the downlink and uplink (respectively)? a)

10Mbps, 5Mbps

b)

100Mbps, 50Mbps

c)

10MHz, 5MHz

d)

14.2Mbps, 2Mbps

Q4 HSDPA is designed to support which data speeds in the downlink? a)

10.8Mbps

b)

100Mbps

c)

14.2Mbps

d)

1Mbps

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Q5 Which version of HSPA forms the foundation for 3.9G/4G?

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a)

HSPA

b)

HSUPA

c)

HSPA+

d)

HSDPA

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Self Assessm ent Multipl e Choic e Question s 3GPP2 Evolution and Future Options.....

Q1 Which version of CDMA supports download speeds of up to 3.1Mbps? a)

cdmaOne

b)

CDMA 1x EV-DV

c)

CDMA 1x EV-DO

d)

CDMA 1x

Q2 What is the maximum downlink speed per carrier under CDMA 1x EV-DO Rev. B? a)

1.8Mbps

b)

3.1Mbps

c)

4.9Mbps

d)

14.7Mbps

Q3 What is the maximum number of carriers that can be supported under CDMA 1x EV-DO Rev. B? a)

15

b)

12

c)

10

d)

8

Q4 Which peak downlink/uplink speeds (respectively) was UMB designed to support in the 20MHz band? a)

3.1Mbps/1.8Mbps

b)

5.3Mbps/1.8Mbps

c)

6.2Mbps/3.6Mbps

d)

288Mbps/75Mbps

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Q5 Which technology/architecture will not be a viable migration option for CDMA operators?

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a)

LTE

b)

UMB

c)

SAE

d)

WiMAX

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Self Assessm ent Multipl e Choic e Question s The IEEE 802.16 Family.....

Q1 Which IEEE 802 committee is primarily concerned with mobile broadband wireless access (MBWA)? a)

802.20

b)

802.16

c)

802.15

d)

802.11

Q2 The IEEE 802.11n WLAN standard supports data rates that are approximately how many times faster than IEEE 802.11a? a)

Twice as fast

b)

Four times as fast

c)

Six times as fast

d)

Ten times as fast

Q3 IEEE 802.16e is primarily concerned with: a)

Quality of Service

b)

WiBro

c)

Multiple access points

d)

Mobile broadband

Q4 How is IEEE 802.20 differentiated from previous version of mobile broadband standards? a)

Provides a migration path for 3GPP and 3GPP2 technologies

b)

Aims to provide synchronous downlink/uplink data rates

c)

Aims to design a mobile broadband system from the ground up

d)

Backwards-compatible with other IEEE 802 standards

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Q5 WiMAX can be most effectively used as a cost-efcient substitute for which type of network?

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a)

WiFi

b)

Metropolitan bre

c)

Bluetooth

d)

Satellite

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Self Assessm ent Multiple Choice Question s Technolo gies f or Evolvin g Wireless.....

Q1 Which common modulation scheme is most commonly found in today’s radio technologies? a)

PSK (Phase shift keying)

b)

ASK (Amplitude shift keying)

c)

FSK (Frequency shift keying)

d)

DSK (Digital shift keying)

Q2 What is the effect on adaptive modulation of a reduction in range? a)

Modulation decreases

b)

Modulation stays the same

c)

Modulation increases

d)

No effect

Q3 Error coding is used to: a)

Improve latency

b)

Improve data accuracy

c)

Improve throughput

d)

Improve overall systems effectiveness

Q4 The key benet of Orthogonal Frequency Division Multiplexing (OFDM) is: a)

Reduced latency

b)

Improved throughput

c)

Improved spectrum efciency

d)

Improved data accuracy

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Q5 Smart antennas are used to:

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a)

Increase the effective capacity of cells

b)

Improve data accuracy

c)

Improve spectrum utilization

d)

Increase cell size

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End-of-Section Practice Paper (These questions are designed to encourage further research as well as to consider the practical implementation issues associated with next-generation wireless systems.)

Q1 Assess the importance and effectiveness of the contribution of the ITU’s standardization bodies to the development of global next-generation wireless systems.

Q2 Describe the limitations of UMB as a true mobile broadband technology.

Q3 Assess the relative usefulness of WiFi, WiMAX and LTE for operators seeking to maximize their mobile broadband coverage.

Q4 What are the drivers and barriers to the commercial deployment of LTE networks?

Q5 Some mobile network operators have not yet implemented 3G systems. Assess whether they should do so, or whether they should defer mobile broadband implementation until 4G networks become available.

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End-of-Section Multiple Choice Questi ons Q1 The target bit rate for 3G access at <150km/h is: a)

512Kbps

b)

384Kbps

c)

144Kbps

d)

2Mbps

Q2 The primary purpose of 3GPP is to: a)

Develop 3G standards based on GSM networks

b)

Harmonize the global development of GSM-based 3G networks

c)

Develop 4G standards

d)

Develop 3G standards based on CDMA networks

Q3 Which release of the 3GPP specications was concerned with the development of efcient radio access for IP-based multimedia services? a)

Release ‘99

b)

Release 4

c)

Release 5

d)

Release 6

Q4 The standards specications contained within 3GPP Release 8 are often collectively referred to as: a)

4G

b)

3.9G

c)

3.5G

d)

3G

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Q5 HSPA+ is designed to support which data speeds in the downlink? a)

10.8Mbps

b)

100Mbps

c)

14.2Mbps

d)

42Mbps

Q6 Which version of CDMA supports download speeds of up to 2.4Mbps? a)

cdmaOne

b)

CDMA 1x EV-DV

c)

CDMA 1x EV-DO

d)

CDMA 1x

Q7 The original specications for UMB were the responsibility of which body? a)

3GPP

b)

3GPP2

c)

ITU

d)

Independent equipment manufacturers

Q8 Which IEEE committee is responsible for the development of WiFi standards? a)

802.15

b)

802.20

c)

802.16

d)

802.11

Q9 By 2013, approximately how many WiMAX base stations are forecast to be in operation globally?

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a)

8,000

b)

80,000

c)

180,000

d)

280,000

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3G Wireless Systems and Evolution Q10 The technique commonly used to increase the number of users that can access a single cell is referred to as: a)

Multiplexing

b)

Modulation

c)

Error control coding

d)

Time-sharing

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The Roadmap to 4G

SECTION 3 THE ROADMAP TO 4G

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The Roadmap to 4G

Self Assessm ent Multiple Choice Question s The ITU 4G Framewor k and Timeli nes.....

Q1 Which of the following technologies is considered to be one of the main candidates for ratifcation as a 4G standard? a)

WiMAX

b)

LTE

c)

CDMA 1x EV-DO

d)

WiFi

Q2 A WCDMA network operator seeking to upgrade to an LTE network would usually consider which migration route? a)

WiFi

b)

cdmaOne

c)

TD-SCDMA

d)

HSxPA

Q3 Which technology standard does the NGMN Alliance endorse? a)

BWA

b)

WiMAX

c)

WiBro

d)

LTE

Q4 What downlink data rates will the ITU’s IMT-Advanced Standard require? a)

10Mbps

b)

100Mbps

c)

1Gbps

d)

50Mbps

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Q5 Large-scale (WAN) deployment of LTE by Tier 2 operators is expected to begin from which date?

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a)

2010

b)

2011

c)

2012

d)

2013

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The Roadmap to 4G

Self Assessm ent Multiple Choice Question s Candidate 4G Techno logies.....

Q1 One of the requirements of the ITU’s IMT-Advanced specications is for seamless connectivity. To what does this primarily refer? a)

Connections between different operators using the same network standard (e.g. LTE)

b)

Connections between different operators using different network standards (e.g. LTE-WiMAX)

c)

Connections between LTE/4G and at least one 2G network standard (e.g. cdmaOne)

d)

Connections between LTE/4G and at least one IMT-2000 network standard (e.g. CDMA 1x EV-DO)

Q2 Which core LTE technology would be used to achieve improved average throughput? a)

MIMO

b)

OFDMA

c)

Femtocells

d)

SDRs

Q3 Which existing networking standard already incorporates OFDMA? a)

EV-DO Rev. A

b)

HSUPA

c)

802.16e

d)

WCDMA

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Q4 The key benet of deploying femtocells in LTE implementation occurs in which part of the network? a)

Base station

b)

Backhaul

c)

Radio access

d)

Core network

Q5 What is the main barrier to deploying SDRs in large-scale LTE network deployments?

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a)

Inherent cost of upgrading power ampliers in legacy base station equipment

b)

Lack of signicant cost savings

c)

Unsuitable for large-scale LTE network deployments

d)

SDRs are only available through Chinese vendors

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The Roadmap to 4G

Self Assessm ent Multiple Choice Question s 4G Services, Appl ication s and Devices.....

Q1 According to the ITU, what type of functionality would context-based services be expected to deliver in a 4G network? a)

Scalable according to the location of the device

b)

Automatic, network-driven reconguration of devices in line with context

c)

QoS levels in line with signal strength in different locations

d)

Security of user information

Q2 According to the ITU, which type of 4G application would require an interactive, low-delay class of service? a)

Instant messaging

b)

e-mail

c)

Location-based services

d)

File transfer

Q3 What type of 4G device does Informa Telecoms & Media predict will dominate by 2013? a)

Netbooks

b)

USB modems

c)

Data cards

d)

Mobile devices

Q4 For 4G services to remain affordable to end-users, what must be the primary concern of operators seeking to implement LTE-based networks? a)

Reduce capital expenditure

b)

Reduce cost-per-packet

c)

Reduce operating expenditure

d)

Reduce prices

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Q5 The common characteristic of 4G applications is that they must focus on:

168

a)

Innovation

b)

Vendor capabilities

c)

Network utilization efciencies

d)

Spectrum utilization efciencies

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The Roadmap to 4G


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End-of-Section Practi ce Paper (These questions are designed to encourage further research as well as to consider the practical implementation issues associated with next-generation wireless systems.)

Q1 What recommendations would you make to a 2.5G operator in a developing market in terms of migration to a 4G network?

Q2 What are the main barriers to deployment of 4G networks?

Q3 What do you consider to be the main weaknesses of the ITU’s approach to standardization?

Q4 To what extent do you believe that the 4G standards under development are truly marketdriven? Justify your answer.

Q5 Do you believe that all network operators should be looking to deploy 4G networks? Justify your answer, using examples from different countries.

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The Roadmap to 4G

End-of-Section Multiple Choice Questi ons Q1 A 3GPP2 (CDMA) operator seeking to upgrade to a 4G network would normally consider which migration route? a)

WiMAX

b)

HSUPA

c)

LTE

d)

WCDMA

Q2 What phase of the IMT-Advanced standardization process was the ITU undertaking in November 2009? a)

Development of candidate RITs/SRITs

b)

Acknowledgement of candidate RITs/SRITs

c)

Evaluation of candidate RITs/SRITs

d)

Assessment of compliance of candidate RITs/SRITs with minimum IMT requirements?

Q3 Why is security one of the ITU’s requirements for IMT-Advanced? a)

Need to protect network base stations from theft

b)

Need to protect user data against fraud and theft

c)

Need to protect banks from fraud

d)

Need to guarantee the integrity of user information

Q4 Which core LTE technology would be used to achieve improved spectrum efciencies? a)

OFDMA

b)

MIMO

c)

Femtocells

d)

SDRs

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Introduction to LTE and 4G WirelessModule 1 MCQ Answers

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