Details

Autor(en) / Beteiligte

• Jasim, Mohammed
• Aldalbahi, Adel
• Shakhatreh, Hazim

Titel

Beam Aggregation for Instantaneous Link Recovery in Millimeter Wave Communications

Ist Teil von

• 2018 14th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2018, p.97-101

Ort / Verlag

IEEE

Erscheinungsjahr

2018

Quelle

IEEE Xplore

Beschreibungen/Notizen

• Cellular networks at millimeter wave frequencies experience tremendous propagation impairments and channel fluctuations. One major challenge here is the aggregated path loss levels attributed to obstacles of various shapes and density in the propagation links, i.e., link blockage. Therefore, once the base and mobile stations establish the optimum beamforming and combining vectors during the initial beam access procedure in the control-plane, efficient link maintenance techniques are required to maintain communication sessions with sufficient signal levels at various blockage densities. Hence this paper presents a novel link recovery scheme based upon beam aggregation during link transitions from line-of-sight to non-line-of-sight (NLoS) environments. The proposed scheme utilizes circular antenna arrays and hybrid beamforming designs to achieve near-instantaneous recovery times without the need for repeated beam scanning. Simulation results show that the proposed recovery scheme exhibits significant improvements compared to alternative traditional methods in terms of signal-to-noise ratios and recovery times.