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20-07-2021

Extending the coverage of evolved Node–B by relaying data using device-to-device offloading in next generation cellular network

Journal:
Peer-to-Peer Networking and Applications
Authors:
C. G. Balaji, K. Murugan
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Abstract

The fifth-Generation mobile network introduces a new technology called Device-to-device (D2D) Communication which allows User Equipment (UE) to communicate directly with each other, without the need for Base Station or Evolved Node–B (eNB). Thus the mobile data traffic over the eNB can be reduced and throughput can be increased. The objective of this paper is to provide relaying service in cellular network, which has the capability of expanding the network coverage and reducing the traffic over cellular network by using D2D communication. It is achieved by using a technology called Proximity Service (ProSe), in which ProSe Direct Communication and ProSe Direct Discovery enable to identify the UE which are out of network coverage. Then the relay node is selected for serving the UE which are out of network coverage on the basis of Channel Quality Indicator (CQI) and the signal strength between the UE that are in coverage and the UE that are out of network coverage. The UE whose CQI value is high are selected based on certain criteria and are allowed to act as relays. The experiments show that the proposed technique with 5 UERelay maintains the D2D communication for longer period than the traditional techniques. Thus, the UE that are out of network coverage are served for more duration by extending the network coverage of the eNB and by relaying data using D2D offloading.

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