SCIENTIA SINICA Informationis, Volume 47, Issue 10: 1435-1442(2017) https://doi.org/10.1360/N112017-00136

## 5G optical fronthaul: key issues, features and goals

• AcceptedAug 21, 2017
• PublishedOct 16, 2017
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### Abstract

5G optical transport networks are advancing toward higher speed, lower latency, and lower power consumption. The main viewpoints presented in this article regarding the development trends in 5G optical transport networks are: (1) Large bandwidth and low latency transmissions are the major goals for future 5G optical transport networks. This is the essential problem for multi-dimensional optical multiplexing technology, with the goal of the transmission of massive data at high speeds with low latency. (2) With the surge in the number of antennas and the continuous deployment of virtualization technology, the topology of 5G transport networks no longer requires a fixed connection mode. The construction of flexible and reconfigurable transport networks is an important feature of 5G resource utilization. (3) In order to meet the growing demand for mobile traffic, as well as high-quality transmission for the diversification of Internet of Things services, combining artificial intelligence and machine learning technology to construct a deep-intelligence control plane for 5G optical transport networks is another significant development goal.

### References

[1] Bartoli G, Marabissi D, Pucci R. AI Based Network and Radio Resource Management in 5G HetNets. J Sign Process Syst, 2017, 89: 133-143 CrossRef Google Scholar

• Figure 1

(Color online) Schematic diagram of the flexible 5G optical fronthaul networks

• Figure 2

(Color online) Network architecture under artificial intelligence

• Table 1   Peak rate and average throughput under different antennaconfigurations $^{[6]}$
 Antenna Air interface Fronthaul interface Latency (ms) configuration data rate (Gbps/s) data rate (Gbps/s) 125 MHz-256QAM-8$\times$8 MIMO 0.61 61 0.1 175 MHz-256QAM-8$\times$8 MIMO 0.85 85 0.1 100 MHz-256QAM-16$\times$16 MIMO 0.98 98 0.1 125 MHz-256QAM-16$\times$16 MIMO 1.2 120 0.1 150 MHz-256QAM-16$\times$16 MIMO 1.5 150 0.1 250 MHz-256QAM-16$\times$16 MIMO 2.4 240 0.1 500 MHz-256QAM-16$\times$16 MIMO 4.9 490 0.1 500 MHz-256QAM-32$\times$32 MIMO 9.8 980 0.1

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