| 摘要 |
PURPOSE: A method and an apparatus for fast and energy-efficient link recovery in a VLC(Visible Light Communication) system are provided to recover a link at a high speed after communication disconnection in point-to-point or point-to-multipoint connections. CONSTITUTION: An infrastructure device, namely AP(Access Point)(110), comprises a VLC transceiver that communicates bi-directionally with VLC transceivers in two mobile node. A MN(Mobile Node)(120) is a mobile phone and another MN(130) is a laptop computer. The AP is part of a LAN(Local Area Network). The AP stops transmitting data, holds the uplink grant for the MN, and instead transmits an FLR(Fast Link Recover) signal to the MN using the same resources allocated in the downlink frame that AP normally uses to transmit data to the MN. |
