Performance Analysis of a 5G Transceiver Implementation for Remote Areas Scenarios

Transcription

1 Performance Analysis of a 5G Transceiver Implementation for Remote Areas Scenarios Wheberth Dias, Danilo Gaspar, Luciano Mendes Marwa Chaffi, Maximilian Matthe, Peter Neuhaus, Gerhard Fettweis Speaker: Prof. Dr. Luciano Mendes luciano@inatel.br 5G-RANGE receives funding from the European Union Horizon 2020 Programme (H2020/ ) under grant agreement n and from the Ministry of Science, Technology and Innovation of Brazil through Rede Nacional de Ensino e Pesquisa (RNP) under the 4 th EU-BR Coordinated Call Information and Communication Technologies.

2 Agenda Motivations for a remote area network Main Challenges and Requirements Physical layer for Remote Area Networks Performance evaluation Conclusions

3 Motivations 5G-RANGE main goal: provide reliable Internet access in remote areas using a innovative 5G mode at an affordable price. Subscriber Density in Brazil

4 Motivations Huge social impacts: 3.9 billion people are unconnected around the world [1]. Improve quality of life using information and education. Reproduction from [1]. [1] Imme Philbeck, CONNECTING THE UNCONNECTED Working together to achieve Connect 2020 Agenda Targets, ITU White Paper, 2017.

5 Motivations Economic impacts: Productivity improvement in Smart farms [2]. Production monitoring [2]. [2] M. Ryu, J. Yun, T. Miao, I. Y. Ahn, S. C. Choi and J. Kim, "Design and implementation of a connected farm for smart farming system," 2015 IEEE SENSORS, 2015.

6 Motivations Better connectivity and safety Road coverage MTC support Environment monitoring

7 Challenges and Requirements Large Coverage Low population density regions demands for large cells 5G-RANGE target: 50 km Broadband connection Reliable and high quality broadband connection. 5G-RANGE target: 100 cell edge Mobility Support for drones, cars and trains 5G-Range target: 120km/h

8 Challenges and Requirements Cognitive Radio Exploit idle TV channels in VHF and UHF bands. Reduce the cost with spectrum license. Good propagation properties in below 1GHz bands. Narrow control channel for network orchestration. Excellent protection to incumbents.

9 Challenges and Requirements Physical Layer main features: Low out-of-band emissions. Robustness against multipath. High spectrum efficiency. Flexibility to cover different applications.

10 5G-RANGE Basic Architecture Innovative and state-of-the-art PHY and MAC techniques to provide reliable and low cost broadband Internet access in remote areas. Two main network layers: Flexible PHY Cognitive MAC RRC Layer API PHY Control RRC Layer/ Network Layer RLC Layer RRC Layer API MAC Control RRC Layer API RLC Control Network Layer RLC Layer API Logical Channels Geolocation Database Cognitive MAC Layer 5G D2DRC User interface MAC layer API Codeword length and Code rate ACRA MAC layer API Number of subcarrier and subsymbols, modulation order, filter specs. FlexNOW MAC layer API Frame size, pilots assignment, resource allocation PHY Framer MAC layer API Diversity gain and Spectral efficiency MIMORA RF Front end 5G SCHED Channel Feebdack control/ Manager CSI report SINR Report 5G LA 5G ATB MCS/Code Rate Power Control 5G RACH TA MULTIPLEXING/ DEMULTIPLEXING HARQ HARQ MAC PDUs/Coding CCn 5G DARA 5G COSORA Flexible PHY IR2A Pilot signals IR2A Algorithms PHY Layer Cognitive MAC PHY Layer APIs Control Channels/FAP messages PHY Layer API Physical Channels Transport Blocks PHY Layer API Resource Assignment

11 PHY for Remote Areas Different waveforms: GFDM, OFDM, DFT-s-OFDM. Time windowing for reducing the OOB. Polar coding for robustness against channel errors. MIMO for diversity to overcome fading. Robust synchronization based on pilot symbols. SDR+FPGA implementation for flexibility and performance.

12 PHY for Remote Areas LVC for prototyping: VI host Math Script host MRD FPGA CDL FPGA HDL FPGA

13 PHY for Remote Areas Proof-of-Concept implemented using National Instruments platform. Outdoor Device Unit: 20W+20W power amplifiers Mixers Filters MIMO 2x2 antennas Indoor Device Unit 1 USRP 2952R for the transmitter 1 USRP 2052R for the receiver 1 PXIe 1071 with FlexRio transceiver module

14 Performance Evaluation OOB Low OOB is mandatory for dynamic and fragmented spectrum allocation. Time windowing and filtering are key techniques to reduce OOB emissions.

15 Performance Evaluation OOB ISDB-T OFDM GFDM frequency

16 Performance Uncoded BER

17 Performance Coded BER System Parameters

18 Conclusions 5G can overcome the last frontier for universal Internet access. Current technology is able to support long range services. Cognitive radio can reduce the operational cost using license-free TVWS. Performance tests show that implementation loss is affordable. Field tests are necessary to confirm laboratorial evaluation.

19 Remote Area Access Network for the 5th Generation Prof. Luciano Mendes Range