Global positioning systems (GPS) are used by navigation devices to allow drivers of cars to find locations and destinations. Describe how GPS signals from satellites are used by navigation devices to determine a location. Describe the factors that could degrade a GPS signal, when it is transmitted to a navigation device, and affect the accuracy of the location found by that device.

9626_m17_qp_32

THEORY

2017

Paper 3, Variant 2

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Cellular networks use 3G, 4G and 5G systems for mobile communications so that users can access internet services. Explain how 4G cellular networks provide a better service than 3G networks for smartphone users accessing internet services. Describe two features of 5G mobile communication systems that make them suitable for connecting smart devices together into large networks.

9626_m23_qp_32

THEORY

2023

Paper 3, Variant 2

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Describe how the features of a 4G cellular communications system improve the ability of a smartphone to complete the download of a video file from the internet. 5G cellular communications systems promise significant improvements compared to 4G. Describe two ways that these improvements may affect the use of smartphones.

9626_s19_qp_32

THEORY

2019

Paper 3, Variant 2

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The introduction of 5G cellular communication systems will provide increased bandwidth for users. 5G cellular communication systems will enable video delivery to users to be more reliable. Describe two other improvements that 5G will be able to provide. Describe two drawbacks of the introduction of 5G cellular communication systems.

9626_s21_qp_31

THEORY

2021

Paper 3, Variant 1

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The introduction of 5G cellular communication systems will provide increased bandwidth for users. 5G cellular communication systems will enable video delivery to users to be more reliable. Describe two other improvements that 5G will be able to provide. Describe two drawbacks of the introduction of 5G cellular communication systems.

9626_s21_qp_33

THEORY

2021

Paper 3, Variant 3

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Cellular networks are used to provide mobile communications for users. Describe the structure of a cellular network. Explain how cellular networks allow large numbers of mobile phones to connect without interference from other mobile phones.

9626_w23_qp_32

THEORY

2023

Paper 3, Variant 2

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Describe how a device fitted to an aircraft can use a Global Positioning System (GPS) to determine its location.

9626_m21_qp_32

THEORY

2021

Paper 3, Variant 2

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Discuss the benefits and drawbacks of the use of satellite technology in global positioning systems (GPS).

9626_s18_qp_31

THEORY

2018

Paper 3, Variant 1

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Discuss the benefits and drawbacks of using satellites for television and radio broadcasting.

9626_s18_qp_33

THEORY

2018

Paper 3, Variant 3

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Describe how a digital television signal is broadcast from a satellite to a receiver for display on a television set in a home.

9626_s20_qp_32

THEORY

2020

Paper 3, Variant 2

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