Inter-Beam Co-Channel Downlink and Uplink Interference for 5G New Radio in mm-Wave Bands

Sensors

卷:21

Leszek Nowosielski¹  JanM. Kelner¹  Cezary Ziółkowski¹  Kamil Bechta² 

[1] Institute of Communications Systems, Faculty of Electronics, Military University of Technology, 00-908 Warsaw, Poland;

[2] Nokia Solutions and Networks, 54-130 Wrocław, Poland;

关键词: wireless mobile communications;    5G;    millimeter-wave;    multi-beam antenna system;    wireless downlink and uplink;    co-channel interference;   

DOI  :  10.3390/s21030793

来源: DOAJ

【 摘 要 】

This paper presents a methodology for assessing co-channel interference that arises in multi-beam transmitting and receiving antennas used in fifth-generation (5G) systems. This evaluation is essential for minimizing spectral resources, which allows for using the same frequency bands in angularly separated antenna beams of a 5G-based station (gNodeB). In the developed methodology, a multi-ellipsoidal propagation model (MPM) provides a mapping of the multipath propagation phenomenon and considers the directivity of antenna beams. To demonstrate the designation procedure of interference level we use simulation tests. For exemplary scenarios in downlink and uplink, we showed changes in a signal-to-interference ratio versus a separation angle between the serving (useful) and interfering beams and the distance between the gNodeB and user equipment. This evaluation is the basis for determining the minimum separation angle for which an acceptable interference level is ensured. The analysis was carried out for the lower millimeter-wave band, which is planned to use in 5G micro-cells base stations.

【 授权许可】

Unknown