5g, a network, and beyond
TRANSCRIPT
5G
1
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.
6
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.●
8
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.
●
9
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.●
10
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
13
Source: https://www.ericsson.com/5g/use-cases
● Broadband, Media everywhere.
7 Dec. 2016
5G Use Cases
● Smart Vehicles, Transportation.
14
● 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
16
17