Abstract
This paper considers the hidden node avoidance problem in an LTE-U and WiFi coexistence system operating in unlicensed bands. An enhanced Listen Before Talk (e-LBT) mechanism is proposed for coordinating the LTE-U and WiFi systems. To support the e-LBT mechanism, we first enhance an LTE-U node by introducing a WiFi module in the LTE-U eNB and redefining the RRC and MAC functional blocks in both LTE-U eNB and LTE-U UE in order to enable information exchange between an LTE-U node and a WiFi node. Moreover, the e-LBT mechanism incorporates an RTS/CTS handshaking mechanism in the basic LBT mechanism to resolve the hidden node problem. Simulation results show that the proposed e-LBT mechanism can significantly improve the performance of the coexistence system in terms of LTE-U system throughput as compared with the basic LBT mechanism.
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References
Huawei: Discussion paper on unlicensed spectrum integration to IMT systems. 3GPP RAN 62 RP-131723 (2013)
3GPP TR 36.889: Study on licensed-assisted access to unlicensed spectrum (Release 13) TR 36.889v13.0.0 (2015)
Nihtila, T., et al.: System performance of LTE and IEEE 802.11 coexisting on a shared frequency band. In: IEEE Wireless Communications and Networking Conference, pp. 1038–1043. IEEE Press, New York (2013)
Almeida, E., et al.: Enabling LTE/WiFi coexistence by LTE blank subframe allocation. In: IEEE International Conference on Communications, pp. 5083–5088. IEEE Press, New York (2013)
Qualcomm: LTE in unlicensed spectrum: harmonious coexistence with WiFi. White Paper (2014)
IEEE Std 802.11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY). Specification (2012)
Panasonic: Hidden and exposed station statistics and implications in LAA Scenarios. 3GPP TSG-RAN R1-151018 (2015)
Samsung: Discussion on hidden node issue for LAA. 3GPP TSG-RAN R1-151047 (2015)
Lien, S.Y., et al.: Resource-optimal licensed-assisted-access in heterogeneous cloud radio access networks with heterogeneous carrier communications. IEEE. Trans. Vehi. Technol. 65(12), 9915–9930 (2016)
Song, H., et al.: A spectrum etiquette protocol and interference coordination for LTE in Unlicensed Bands (LTE-U). In: IEEE International Conference on Communication Workshop, pp. 2338–2343. IEEE Press, New York (2015)
Giupponi, L., et al.: Simulating LTE and Wi-Fi coexistence in unlicensed spectrum with NS-3. https://arxiv.org/abs/1604.06826
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© 2018 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Chu, L., Zheng, J., Xiao, J. (2018). An Enhanced Listen Before Talk (e-LBT) Mechanism for Avoiding Hidden Nodes in an LTE-U and WiFi Coexistence System. In: Li, C., Mao, S. (eds) Wireless Internet. WiCON 2017. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 230. Springer, Cham. https://doi.org/10.1007/978-3-319-90802-1_21
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DOI: https://doi.org/10.1007/978-3-319-90802-1_21
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