Efficient beam selection and resource allocation scheme for WiFi and 5G coexistence at unlicensed millimetre‐wave bands
| Autor: | Pengru Li, Danpu Liu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS Bandwidth (signal processing) 020206 networking & telecommunications 020302 automobile design & engineering 02 engineering and technology Spectral efficiency Interference (wave propagation) Spectrum management Computer Science Applications 0203 mechanical engineering Transmission (telecommunications) 0202 electrical engineering electronic engineering information engineering Electronic engineering Resource allocation Electrical and Electronic Engineering 5G Power control |
| Zdroj: | IET Communications. 14:2944-2952 |
| ISSN: | 1751-8636 1751-8628 |
| DOI: | 10.1049/iet-com.2019.0746 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text