On convergence and coexistence of LTE and Wi-Fi networks

The proliferation and penetration of smart phones and IoT devices is having profound impact on world economy. In order to support billions of wirelessly connected devices, and tackle exponentially increasing traffic demands and ever-increasing Quality of Experience and energy efficiency requirements...

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Bibliographic Details
Published in:CSI TRANSACTIONS ON ICT 2019, Vol.7 (3), p.181-186
Main Authors: Tamma, Bheemarjuna Reddy, Pasca, Thomas V., Baswade, Anand M.
Format: Article
Language:English
Subjects:
Controllers
Convergence
Energy conversion efficiency
Global economy
Impact analysis
Mobile communication systems
Smartphones
Steering mechanisms
Wireless communications
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Summary:The proliferation and penetration of smart phones and IoT devices is having profound impact on world economy. In order to support billions of wirelessly connected devices, and tackle exponentially increasing traffic demands and ever-increasing Quality of Experience and energy efficiency requirements of diverse services and applications being carried over communication network infrastructure, convergence and coexistence of various radio access technologies (RATs) is required. In this work, we present various architectures and traffic steering mechanisms for efficient interworking of LTE and Wi-Fi networks and evaluate their performance for carrying TCP traffic which is sensitive to out-of-order delivery of packets at the receiver. Unlike interworking which requires simultaneous usage of both LTE and Wi-Fi radios at user equipment (UE), mobile operators are considering deployment of LTE-U/LAA in unlicensed bands so that only one radio is used at UE. However, to use unlicensed bands LTE-U/LAA needs to fairly co-exist with Wi-Fi. To address this inter-RAT hidden terminal problem, we present novel solutions that either rely on a central inter-RAT controller or work without any such controller in a distributed manner.
ISSN:2277-9078
2277-9086
DOI:10.1007/s40012-019-00231-0