Paper Info
Title
Two Millimeter-Wave Base Station Cooperation Technologies in High-Mobility Environments for 5G Evolution.
Abstract
Commercial services in 5G have already started all over the world. The initial 5G introduces analog beamforming (BF) by Massive MIMO (M-MIMO) to compensate for the larger path-loss in millimeter-wave (mmW) bands such as 28 GHz. In 5G Evolution (5GE) that is expected to be realized for around 2025, the analog BF will be replaced with hybrid or fully digital BF to improve mmW-band downlink/uplink transmission performances. In addition, new radio access technologies are required for 5GE to provide stable and reliable cell-edge transmission in the mmW bands, even when mobile stations (MSs) travel in high mobility. This paper proposes two mmW base station cooperation technologies that are inter-baseband unit (inter-BBU) and intra-BBU cooperation for the hybrid BF. The former exploits two M-MIMO antennas in two BBUs connected to one central unit by limited-bandwidth fronthaul, and the latter cooperates two M-MIMO antennas connected to one BBU with Doppler frequency shift compensation. Computer simulations verify that the intra-BBU cooperation can achieve an excellent transmission performance in cases of two and four MSs moving at a velocity of 90 km/h.
Year
DOI
Venue
2020
10.1109/VTC2020-Spring48590.2020.9129102
VTC Spring
DocType
Citations 
PageRank 
Conference
0
0.34
References 
Authors
0
5
Name
Order
Citations
PageRank
Tatsuki Okuyama100.34
Satoshi Suyama219231.05
Nobuhide Nonaka3104.99
Yukihiko Okumura413633.89
Takahiro Asai517027.02