Patent ID: 8149812
Filing Date: 2012-04-03
Classification: H04B,H04L,H04W

Abstract:
1. A method for retransmitting data when data transmission/reception has failed in a wireless LAN system using visible light communication, the method comprising the steps of: searching a received frame for a fast feedback slot allocated for retransmission information by a mobile node when a data transmission/reception failure has occurred; selecting a mini-slot from among a plurality of mini-slots included in the fast feedback slot; and when the mobile node detects a momentary failure in reception of a visible light communication transmission by an access point transmitting a fast feedback message by the mobile node using visible light communication, including information for retransmission that does not include a specific request for retransmission, to an access point by using the selected mini-slot without a resource allocation procedure when a plurality of mobile nodes are connected to the access point.