期刊
IEEE COMMUNICATIONS LETTERS
卷 26, 期 10, 页码 2475-2479出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LCOMM.2022.3193896
关键词
Probability; Power system reliability; Signal to noise ratio; Indoor environment; Numerical models; Wireless communication; Probability density function; Reconfigurable intelligent surface; RIS deployment; human mobility model
资金
- Major Key Project of PCL [PCL2021A04]
This letter investigates the impact of indoor RIS deployment on indoor signal coverage and proposes an indoor RIS deployment strategy considering human mobility to minimize the outage probability. Numerical results demonstrate that deploying RIS correctly can significantly decrease the indoor communication outage probability.
Reconfigurable intelligent surface (RIS) is regarded as a promising technology to assist indoor millimeter wave (mm-Wave) communication due to its ability to manipulate electromagnetic waves directionally. Due to the complexity of indoor environment, different RIS deployment strategies significantly affect the system performance. However, the existing work investigating RIS indoor deployment ignored the influence of human mobility to indoor signal coverage, therefore a practical indoor deployment strategy remains unknown. In this letter, based on the consideration of human blockage to mm-Wave signal and probability distribution of human location, we propose an indoor RIS deployment strategy with human mobility model to minimize the outage probability, which is more applicable to the realistic indoor environment. An algorithm is presented to minimize the outage probability at a subspace scale of the room geometry and calculate the corresponding RIS location for single RIS deployment and multiple RISs cooperative deployment. Numerical results are provided to display how our deployment strategy works, which indicate that deploying RIS correctly can decrease the indoor communication outage probability significantly.
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