Preamble design for supporting multiple topologies with visible light communication
AssigneeSamsung Electronics Co., Ltd.
InventorsSridhar Rajagopal, Eun Tae Won, Ying Li
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Abstract
For use in visible light communication (VLC), synchronization with multiple topology support while transmitting an extended preamble includes transmitting a two-part preamble sequence. The preamble sequence includes one or more repetitions of a fast locking pattern (FLP) configured to be used clock synchronization, and one or more repetitions of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of VLC topologies. The method for transmitting an extended preamble includes generating an extended preamble and transmitting the extended preamble during a receive or idle mode for maintaining visibility support and for better synchronization performance.
Claims23
A visible light communications apparatus, comprising:
- a transmitter configured to transmit a preamble sequence, the preamble sequence comprising:
- one or more repetitions of a fast locking pattern (FLP) configured to be used for clock synchronization, and
- at least one repetition of a topology dependent pattern (TDP) configured to be used to distinguish a plurality of visible light communication (VLC) topologies.
An apparatus for transmitting an extended preamble in visible light communication (VLC) system, the apparatus comprising:
- a processor configured to generate an extended preamble;
- and
- a transmitter configured to transmit the extended preamble during a receive or idle mode to maintain visibility support and synchronization performance.
An apparatus distinguishing multiple visible light communication (VLC) transmissions in a VLC system, the apparatus comprising:
- a receiver configured to receiving a first preamble associated with a first VLC transmission;
- and
- a processor configured, upon a determination that the first preamble does not match an expected preamble, to reject the first VLC transmission,
- wherein the receiver is configured to receive a second preamble associated with a second VLC transmission, and
- wherein the process is configured, upon a determination that the second preamble matches the expected preamble, to synchronize to the second VLC transmission.
Dependencies are inferred from the claim text.