IEEE ComSoc CTN Special Issue on 5G

CTN Issue: October 2014

All ten of the July, 2014 top ten most popular (in terms of online views through IEEE Xplore) articles published in ComSoc periodicals are about 5G [Top10, 2014], so it seems covering 5G is a judicious choice for this month’s CTN.

The IEEE Communications Magazine had two special issues on 5G this year, entitled “5G Wireless Communication Systems: Prospects and Challenges” with Part 1 in February, 2014 and Part 2 in May, 2014. Each part included nine technical articles along with a guest editorial by the guest editors: John Thompson (University of Edinburgh), Xiaohu Ge (Huazhong University of Science and Technology), Hsiao-Chun Wu (Louisiana State University), Ralf Irmer (Vodafone), Hong Jiang (Alcatel-Lucent Bell Labs), Gerhard Fettweis (Technical University of Dresden), and Siavash Alamouti (independent entrepreneur, formerly Vodafone). These eighteen articles give a comprehensive view of the exciting technologies envisioned for 5G, and their associated technical challenges.

The Requirements, Challenges, and Technologies for 5G of Terrestrial Mobile Telecommunication

CTN Issue: October 2014

The article opens with a list of characteristics of 5G traffic, including the frequently mentioned traffic increase (78% compounded yearly growth rate for 2012-2016), indoor/hotspot dominance (70% data traffic indoors), uplink/downlink asymmetry (currently 6:1), anticipated increase in the number of subscribers (due to machine-to-machine applications), and the need to simultaneously reduce energy consumption. The authors identify the key requirements facing 5G as i) achieving 1000-fold mobile data capacity, ii) reducing energy consumption, iii) leveraging new spectrum (above 3 GHz), and iv) reducing costs for terminals and (macro and micro) base stations.

IEEE Communications Magazine

The Role of Small Cells, Coordinated Multipoint, and Massive MIMO in 5G

CTN Issue: October 2014

The authors focus on three key technologies for achieving higher spectral efficiency in 5G: interference mitigation (through coordinated multipoint), network “densification” (through small cells), and massive MIMO.   They outline an architecture where these three technologies work together, as outlined below.

IEEE Communications Magazine

Device-to-Device Communication in 5G Cellular Networks: Challenges, Solutions, and Future Directions

CTN Issue: October 2014

While the conventional cellular architecture consists of connections from base stations to user equipment, 5G systems may well rely upon a two-tier architecture consisting of a macrocell tier for base station to device communication, and a second device tier for device to device (D2D) communications.  Such architectures are a hybrid of conventional cellular and ad hoc designs.  Theauthorsfirst taxonomize possible D2D architectures and outline three technical challenges in D2D, namely, security, interference management, and resource allocation.  Second, the authors describe possible pricing models to incentivize users to let their devices serve as relays for other communications. 

IEEE Communications Magazine

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