In this paper, we present ADAPT, an Adaptive Directional Antenna Protocol for THz networks. This is a MAC protocol for ultra-high-speed centralized networks at macro-scale distances, where both the Access Point (AP) and the client nodes use narrow-beam DAs. The protocol relies on a turning...
medium access control (MAC) design MAC protocols - controlling access rights of shared medium 60 GHz band - extreme short wavelength of 5 millimeters and significant antenna size reduction omnidirectional and directional antennas directional antenna use design issues directional transmissions - boosting over...
This is achieved by transmitting RTS/CTS frames in all antenna sectors at the maximum allowed power that does not cause interference with ongoing transmissions. The DATA/ACK exchange then takes place directionally and at the minimum necessary power. We measure the performance of the proposed MAC ...
Despite being translated into different shapes and topologies, the designed epsilon-near-zero antenna resonates at a same frequency, while exhibiting very different far-field radiation patterns, with beams varying from wide to narrow, or even from single to multiple. Additionally, the photonic doping...
Opportunistic medium access (i.e., multiuser diversity) and MIMO techniques (i.e., multiple-antenna techniques) are two effective ways to achieve a substantial throughput gain in a multiuser wireless system. In this paper, we propose a medium access control (MAC) protocol with opportunistic mediu...
In P2MP mesh networking mode, pay attention to the beamwidth of directional antennas. The angle between an antenna and its linked device must be smaller than the beamwidth of the antenna. The linked device must be within the coverage area of the antenna. As shown in the following figure, ...
WiFiRe is meant for a star topology - 10 a Base Station (BS) at the fiber Point of Presence (PoP) and Subscriber Terminals (ST) in the 11 surrounding villages - with sectorized antennas at the BS and a directional antenna at each ST. The 12 WiFiRe MAC is time-division duplex (TDD...
We also show that anycast is very useful when used in conjunction with directional antenna or multiple channels, as well as for improving reliability and efficiency of MAC-layer multicast.;In our second work, we have demonstrated the benefits of using the physical layer signal level information ...
Indoor high-density scenarios: Use small-angle directional antennas. During network planning, select AP positions and spacing based on the antenna angle. Wireless location scenarios: Plan the coverage radius of 15–20 m for each AP. Network Capacity Design On a WLAN, the bandwidth is planned bas...
However, scheduling of node transmissions become non-trivial since one needs to coordinate the directions of the transmitting antenna and receiving antenna in order to establish a link. Some researchers show that manipulating carrier sensing range can be helpful. Zhu, et al. [21] proposed to tune...