Access control scheme for collision detection utilizing MIMO transmission
Takefumi Hiraguri, Kentaro Nishimori, Ogawa Toshiyuki, Ryochi Kataoka, Hiroshi Takase, Hideaki Yoshino, Hideo Makino · IEICE Communications Express · 2013
In the wireless communications, packet collisions due to the interfering signals are significant issue. Since the wireless local area network (WLAN) may not detect packets collision while transmitting the signals, right/wrong of the reception will be judged by the reply of the acknowledgment (ACK) frame. Therefore, the WLAN of transmission efficiency is very low and approximately 60%. In this paper, a novel access control scheme is proposed for the collision detection which utilizes multiple-input multiple-output (MIMO) technology. The proposed scheme improves transmitting efficiency compared to the conventional scheme. Via a computer simulation, it is confirmed that the proposed scheme achieves the transmitting efficiency of over 90%.