High-Efficiency Device Positioning and Location-Aware Communications in Dense 5G Networks
Koivisto, Mike; Hakkarainen, Aki; Costa, Mario; Kela, Petteri; Leppänen, Kari; Valkama, Mikko (2017)
Koivisto, Mike
Hakkarainen, Aki
Costa, Mario
Kela, Petteri
Leppänen, Kari
Valkama, Mikko
2017
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201712142354
https://urn.fi/URN:NBN:fi:tty-201712142354
Kuvaus
Peer reviewed
Tiivistelmä
In this article, the prospects and enabling technologies for high-efficiency device positioning and location-aware communications in emerging 5G networks are reviewed. We will first describe some key technical enablers and demonstrate by means of realistic ray-tracing and map based evaluations that positioning accuracies below one meter can be achieved by properly fusing direction and delay related measurements on the network side, even when tracking moving devices. We will then discuss the possibilities and opportunities that such high-efficiency positioning capabilities can offer, not only for location-based services in general, but also for the radio access network itself. In particular, we will demonstrate that geometric location-based beamforming schemes become technically feasible, which can offer substantially reduced reference symbol overhead compared to classic full channel state information (CSI)-based beamforming. At the same time, substantial power savings can be realized in future wideband 5G networks where acquiring full CSI calls for wideband reference signals while location estimation and tracking can, in turn, be accomplished with narrowband pilots.
Kokoelmat
- TUNICRIS-julkaisut [16983]