Performance Enhancement Directional CSMA/CA Algorithm in mmWave Bands

Multicast Transmissions in Directional mmWave Communications

Multicast transmissions have been widely analyzed in traditional networks as a way to improve spectrum efficiency when multiple users are interested in the same data. However, their application to mmWave communications has been studied only marginally so far. The goal of this paper is to partially fill this gap by investigating optimal and suboptimal multicast schemes for mmWave communications ...

Listen Before Receive for Coexistence in Unlicensed mmWave Bands

Listen-Before-Talk (LBT) has been adopted as the spectrum sharing technique that guarantees a fair LTE/Wi-Fi coexistence in the unlicensed spectrum at the 5 GHz band. Differently, at mmWave bands, where beamforming is a must to overcome propagation limits, LBT scope becomes limited because the interference layout changes due to the directionality of transmissions. In this regard, this paper pro...

Analysis of mmWave Performance

Hunting-based Directional Neighbor Discovery in mmWave Ad Hoc Networks

The directional neighbor discovery problem, i.e., spatial rendezvous, is a fundamental problem in millimeter wave (mmWave) networks, where directional transmissions are used to overcome the high attenuation. The challenge is how to let the transmitter and receiver beams meet in space under deafness caused by directional transmission and reception, where no prior information or coordination is a...

Improved Cell Search for mmWave Cellular Networks Using Deterministic Scanning Algorithm with Directional Array Antenna

Millimeter Wave (mmWave) communication is considered as an enabling technology for the next generation of cellular networks because it offers much larger bandwidth and higher data rate than the current lower-frequency cellular systems to satisfy the exponential growth of mobile data demand. High gain directional antennas are needed to overcome high propagation losses in mmWave bands. However, t...