5g, a network, and beyond

5G

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By: Belal Essam

A Network, and Beyond ...

7 Dec. 2016

Agenda• Why?

• 5G Requirements.

• 5G Technology Candidates.

• A General 5G Network Architecture.

• Challenges.

• 5G Use Cases.

• When? 27 Dec. 2016

Why?

37 Dec. 2016Source:

5G Requirements

7 Dec. 2016

1 ms Latency

X100Data Rate

Than Today

Energy Efficiency

Spectral Efficiency

5G Technology Candidates

● Small Cells.

● mmWave.

● Massive MIMO.

● Proactive Caching.

● D2D Communications.

●7 Dec. 2016

Small Cells

● Efficient reuse of spectrum across a geographic area.

● Reduction in the # of users competing for resources at each BS, achieving high coverage.

● Decreasing the transmission power drastically.

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5G Technology Candidates

Densification

Cell Shrinking

7 Dec. 2016

mmWave● Refers to frequencies in range 30-300 GHz, also known as Extremely High Frequency (EHF).● The wavelength is between 10mm-1mm.

● “ To put large amounts of new bandwidth into play there is only one way to go: up in frequency, Why? ”

● Frequency spectrum at this band still undeveloped widely, more BW is available.

● Efficient frequency reuse due to high attenuation.

● Inherent security and privacy because of narrow beamwidths and limited range.

● Extremely small wavelengths, allowing for huge # of antenna elements (Massive MIMO).● 7

5G Technology Candidates

7 Dec. 2016

Massive MIMO

● An evolving technology, upgraded from the current MIMO technology.

● The Massive MIMO system uses arrays of antenna containing few hundred antennas which are at the same time , frequency serving many tens of user terminals.

● Extract all the benefits of MIMO but on a larger scale.●

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5G Technology Candidates

7 Dec. 2016

Proactive Caching

● Densification requires high-speed expensive backhauls.

● Assuming that the backhaul is capacity-limited, caching users’ contents at the edge of the network (namely at the base stations and user terminals) holds as a solution to offload the backhaul and reduce the access delays to the contents.

●

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5G Technology Candidates

7 Dec. 2016

D2D Communications● Refers to direct communication between devices allowing local exchange of user traffic without

going through a network infrastructure.●

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5G Technology Candidates

Source: A Survey of 5G Network: Architecture and Emerging Technologies. IEEE Access.

7 Dec. 2016

A General 5G Network ArchitectureHeterogeneous Networks (HetNets)

11Source: A Survey of 5G Network: Architecture and Emerging Technologies. IEEE Access.

7 Dec. 2016

Challenges

● High-speed expensive backhauls. (Densification)

● Signal huge propagation loss, sensitivity for blockage by obstacles. (mmWave)

● High speed HW requirements. (mmWave)

etc...

7 Dec. 2016

5G Use Cases● Healthcare

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Source: https://www.ericsson.com/5g/use-cases

● Broadband, Media everywhere.

7 Dec. 2016

5G Use Cases

● Smart Vehicles, Transportation.

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● Sensor Networks

Source: https://www.ericsson.com/5g/use-cases

7 Dec. 2016

When?

157 Dec. 2016

2020 ?

References● A. Gupta and R. K. Jha, "A Survey of 5G Network: Architecture and Emerging Technologies," in IEEE

Access, vol. 3, no. , pp. 1206-1232, 2015.

● J. G. Andrews et al., "What Will 5G Be?," in IEEE Journal on Selected Areas in Communications, vol. 32, no. 6, pp. 1065-1082, June 2014.

● https://en.wikipedia.org/wiki/5G

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