Samsung Electronics Co., Ltd.

Korea Advanced Institute of Science and Technology

Sung-Yeop Pyun

Dong-Ho Cho

Hong-Seok Shin

Chi-Sung Bae

Woo-Chan Kim

Hyu-Dae Kim

Soo-Yong Jeon

A method and apparatus for notifying status of an MN in a WLAN system using VLC are provided, in which an AP allocates a first predetermined number of time slots per frame as unallocated slots, for status notification of an initially accessing MN and allocates a second predetermined number of time slots per frame as reserved slots, for status notification of an initially accessing MN and uplink data transmission of an MN, and the MN transmits a visible light signal carrying status information about the MN in one of an unallocated slot and a reserved slot, if the MN initially accesses the AP.

Method and apparatus for notifying status of mobile node in a wireless local area network system using visible light communication

A method for retransmitting data when data transmission/reception has failed in a wireless LAN system using visible light communication. A mobile node searches a received frame for a fast feedback slot allocated for retransmission information when momentary data transmission/reception failure has occurred. One mini-slot from among the plurality of mini-slots is selected from the fast feedback slot. The mobile node transmits a fast feedback message, including information for retransmission, to an access point by using the selected mini-slot.

Method and apparatus for retransmitting data in wireless LAN system using visible light communication

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Daejeon, South Korea

Sung-Yeop Pyun