ThD3 – Radio Access Techniques

Thursday, 20 June 2019, 16:00-17:30, Room 3


Session chairIngrid Moerman (Ghent University – imec, Belgium)


Study of Coexistence Between Different Services in Novel 5G Frequency Bands

Claudia Carciofi (FUB, Italy); Paolo Grazioso, Valeria Petrini and Francesco Matera (Fondazione Ugo Bordoni, Italy)
In this work we show the results of coexistence studies between incumbent systems and the forthcoming 5G networks. The analyses were conducted by means of a simple but rigorous prediction tool and based on the widely adopted Minimum Coupling Loss (MCL) methodology. We considered the pioneer bands identified to offer 5G services in Europe by 2020 on a large scale: the 3.5 GHz and the 26 GHz band, using for each band appropriate propagation models. Results show how coexistence is possible, both on a co-channel and an adjacent channel basis, provided that adequate separation is guaranteed between interfering services.


A Device to Device (D2D) Spectrum Sharing Scheme for Wireless Industrial Applications

Idayat Sanusi (University of Greenwich, United Kingdom (Great Britain)); Karim M. Nasr (University of Greenwich & University of Surrey, United Kingdom (Great Britain)); Klaus Moessner (University of Surrey, United Kingdom (Great Britain))
In this paper, we present a spectrum sharing scheme for Device to Device (D2D) deployments in a wireless Internet of Things (IoT) industrial environment. Interference management for this scheme relies on the relative distance between participating users or devices. The D2D links can access spectrum by sharing resources with cellular users or by using dedicated channels. The presented scheme maximises the throughput of admitted D2D links without compromising the Quality of Service (QoS) requirements of users in the network. An optimisation approach is adopted to solve the spectrum sharing problem resulting in an efficient allocation and throughput maximisation for all participating users and devices.


A High Performance Low Complexity Muting Scheme for Interference Coordination

Ole Grøndalen and Kashif Mahmood (Telenor, Norway)
Modern mobile networks are heterogeneous consisting of a mix of Base Stations (BSs) of different sizes. The interference scenario in such Heterogeneous Networks (HetNets) is very complex and good interference control schemes are needed to make the network cost efficient and ensure good user experience. Interference coordination schemes where selected BSs are muted in some time intervals can ensure that edge users get fair bitrates and good load balancing between small and large cells. However, finding the optimal scheme for muting BSs in a large network is an unsolved problem. In this paper a new method for generating good sets of muting configurations is proposed and its performance evaluated for small networks where the performance of the optimal muting scheme can be found for comparison. The results show that only a small number of muting configurations generated by the new method is needed to achieve a performance within 90% of the maximum achievable. The results of the simulation study also suggest that the muting scheme found by the proposed method has low sensitivity to changes in user and BS positions, indicating that it is sufficient to update the muting scheme at infrequent intervals.


A Method to Tailor Broadcasting and Multicasting Transmission in 5G New Radio

Wei Guo (Samsung, United Kingdom (Great Britain)); Belkacem Mouhouche (Samsung Electronics Research and Development UK, United Kingdom (Great Britain))
Broadcast and multicast will be an important feature supported in 5G New Radio. In this paper a new transmission method is proposed to improve the receiver side User Equipment (UE) resource efficiency by using redundant multicast channels at the transmitting Base Station (BS). Transmission is tailored for UEs with different channel characteristics. A sub-grouping algorithm is designed to fast allocate UEs of a multicast group to their most suitable channels. Numeric sample calculation proves the validity of the proposed method.


A Hybrid Approach for Data Duplication and Network Coding

Jakob Belschner (Deutsche Telekom AG, Germany); Diomidis S. Michalopoulos (Nokia Bell Labs, Germany)
The extreme requirements for 5G ultra-reliable services call for new approaches for achieving a reliable operation of the Radio Access Network (RAN). Data Duplication as well as Network Coding in combination with multi-connectivity are corresponding approaches that promise increased RAN reliability. In this work, the advantages and disadvantages of both Network Coding and Data Duplication are studied. Moreover, a novel hybrid approach is proposed, which combines the advantages of both approaches. The effectiveness of the proposed hybrid approach is corroborated by means of simulations.


Over the Sea UAV Based Communication

Gianluca Fontanesi (University College Dublin, Ireland); Hamed Ahmadi (University of Essex, United Kingdom (Great Britain)); Anding Zhu (University College Dublin, Ireland)
We envision Unmanned Aerial Vehicle (UAV) aided wireless networks as a solution to provide a reliable, low latency cellular link for search and rescue operations over the sea. We propose three different network architectures, based on the technology deployed on the UAV: a flying relay, a flying Base Station (BS) and a flying Remote Radio Head (RRH). We describe the challenges and highlight the benefits of the proposed architectures from the perspective of search and rescue operations over the sea. We compare the performance in term of data rate and latency, analyzing different solutions to provide a backhaul/fronthaul link for long coverage over the sea. Results show that a system architecture is not outperforming over the others. A cost function is thus indicated as a tool to find a suboptimal solution.