Proceedings ArticleDOI
VRMAC: A novel WLAN medium access control mechanism using LEDs and a camera
Takayuki Nishio,Ryo Nishioka,Masahiro Morikura,Koji Yamamoto +3 more
- pp 1121-1126
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TLDR
This paper introduces the fundamentals of the mechanism, the results indicate that the mechanism improves WLAN throughput over that of the conventional MAC mechanism in WLANs, and presents an example protocol.Abstract:
This paper presents a novel medium access control (MAC) mechanism for wireless local area network (WLAN) systems, called visual recognition based medium access control (VRMAC) mechanism. VRMAC exploits Wi-Fi and visible light communications techniques, using LEDs and a camera to facilitate collision-less medium access with low overhead. In VRMAC, stations (STAs) equipped with LEDs send medium-access request messages by blinking their LEDs and an access point (AP) equipped with a camera receives the messages via the camera. In this paper, we introduce the fundamentals of the mechanism and present an example protocol. Our simulation results indicate that the mechanism improves WLAN throughput over that of the conventional MAC mechanism in WLANs.read more
Citations
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Side channel: bits over interference
TL;DR: An interesting observation that by generating intended patterns, some simultaneous transmissions can be successfully decoded without degrading the effective throughput in original transmission is observed, and a DC-MAC is proposed to leverage this "free” coordination channel for efficient medium access in a multiple-user wireless network.
Journal ArticleDOI
Side Channel: Bits over Interference
TL;DR: An interesting observation that by generating intended patterns, some simultaneous transmissions can be successfully decoded without degrading the effective throughput in original transmission is observed, and a DC-MAC is proposed to leverage this "free” coordination channel for efficient medium access in a multiple-user wireless network.
Proceedings ArticleDOI
Use your frequency wisely: Explore frequency domain for channel contention and ACK
TL;DR: It is proved through rigorous analysis that the proposed scheme can substantially reduce the overheads associated with 802.11 DCF and a guaranteed throughput gain can be obtained, and results from extensive simulations demonstrate that REPICK can improve the throughput by up to 170%.