Patent ID: 8620154

Claim:
For use in a visible light communication (VLC) system, a method of link recovery comprising: in a first VLC device, communicating with a second device on a VLC link associated with at least one first band among a plurality of bands; in the first VLC device, detecting a trigger condition indicating a failure of the VLC link associated with the at least one first band; in the first VLC device, in response to detection of the trigger condition, terminating transmission of data on the at least one first band to the second VLC device; in the first VLC device, transmitting a plurality of fast link recovery (FLR) signals on all of the plurality of bands; in the first VLC device, receiving at least one fast link recovery response (FLR RSP) signal on a subset of the plurality of bands, the subset different from the at least one first band, the at least one FLR RSP signal indicating that the second VLC device received the FLR signals; and in response to reception of the at least one FLR RSP signal, resuming in the first VLC device transmission of data to the second VLC device on at least one of the subset of bands on which the at least one FLR RSP signal was received.