Analyzing Effects Of Directional Deafness On Mmwave Channel Access In Unlicensed Bands
2017 IEEE GLOBECOM WORKSHOPS (GC WKSHPS)(2017)
摘要
Directional deafness problem is one of the most important challenges in beamforming-based channel access at mmWave frequencies, which is believed to have detrimental effects on system performance in form of excessive delays and significant packet drops. In this paper, we contribute a quantitative analysis of deafness in directional random access systems operating in unlicensed bands by relying on stochastic geometry formulations. We derive a general numerical approach that captures the behavior of deafness probability as well as provide a closed-form solution for a typical sector-shaped antenna model, which may then be extended to a more realistic two-sector pattern. Finally, employing contemporary IEEE 802.11ad modeling numerology, we illustrate our analysis to reveal the importance of deafness-related considerations and their system-level impact.
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关键词
beamforming,mmWave channel access,contemporary IEEE 802.11ad modeling numerology,antenna model,closed-form solution,deafness probability,stochastic geometry formulations,unlicensed bands,directional random access systems,quantitative analysis
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