首页|Efficient beam selection and resource allocation scheme for WiFi and 5G coexistence at unlicensed millimetre-wave bands

Efficient beam selection and resource allocation scheme for WiFi and 5G coexistence at unlicensed millimetre-wave bands

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  • NETL
  • NSTL
  • Inst Engineering Technology-Iet
To alleviate the spectrum scarcity, the unlicensed 60 GHz band has raised increasing concerns due to its continuous large bandwidth. Considering IEEE 802.11ad/ay has already been deployed in this millimetre-wave band, the coexistence issues with new radio-based access to unlicensed spectrum should be weighed when deploying fifth generation (5G) network. Fortunately, the directional transmission on beams is able to reduce interference significantly, so beam selection can be combined with power control. To maximise spectrum efficiency (SE) of the 5G network while ensuring a friendly coexistence, the authors formulate an optimisation problem by jointly considering beam selection and resource allocation. More specifically, they design a spectrum planning mechanism to reduce the interference between 5G and WiFi, and then a block coordinate descent method is used to determine the user association, beam selection and power control for 5G users, while limiting the interferences to WiFi devices. Simulation results verify the effectiveness of the proposed algorithm in terms of complexity, convergence and SE.

wireless LANoptimisationpower controlresource allocationradiofrequency interference5G mobile communicationmillimetre wave communicationtelecommunication controltelecommunication network planningefficient beam selectionresource allocation schemeWiFi devicesunlicensed millimetre-wave bandsspectrum scarcitycontinuous large bandwidthradio-based accessunlicensed spectrumfifth generation network5G networkpower controlspectrum efficiencyspectrum planning mechanismIEEE 80211adaydirectional transmissioninterference reductionoptimisation problembeam selectionresource allocationblock coordinate descent methoduser associationfrequency 600 GHz

Li, Pengru、Liu, Danpu

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Beijing Univ Posts & Telecommun, Beijing Lab Adv Informat Network, Beijing Key Lab Network Syst Architecture & Conve, 10 Xitucheng Rd Haidian Dist, Beijing, Peoples R China

2020

10.1049/iet-com.2019.0746

IET communications

IET communications

ISSN：1751-8628
年,卷(期)：2020.14(17)
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