Penetration Loss at 60 GHz for Indoor-to-Indoor and Outdoor-to-Indoor Mobile Scenarios

This paper investigates the penetration loss of an office building in indoor-to-indoor (I2I) and outdoor-to-indoor (O2I) mobile scenarios. The measurements were collected using our 60 GHz double-directional switched-antenna channel sounder. During measurements, the transmitter, mounted on a tripod, was placed in an office and outside of the building, while the receiver, mounted on a mobile robot, moved along an interior hallway. The penetration loss for a variety of building materials was predicted versus incident angle by electromagnetic propagation theory using the International Telecommunication Union Radiocommunication Sector (ITU-R) Recommendation P.2040 model parameters and compared with the measurement results. The wooden door, plasterboard wall, and interior glass were observed to have penetration losses ranging from 25.5 dB to 40.5 dB, 11.8 dB to 31.6 dB, and 7.5 dB to 18.1 dB, respectively, while the exterior building materials exhibited even larger penetration losses, ranging from 31.1 dB to 66.5 dB.