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US 2005/0237922 A1Published application
Virtual side channels for digital wireless communication systems
AssigneeQUALCOMM Incorporated
InventorsMatthew Shoemake, Sridhar Rajagopal, David Brenner
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Abstract
The present invention provides a method for enabling side channel communication between wireless devices. In one embodiment of the invention the guard tones in wireless OFDM signals are used for side channel communication. In another embodiment of the invention, unused bits in OFDM symbols are used as side channels instead of being padded with zeros or random bits.
Claims9
A method for providing side channel communication between wireless communication devices, the method comprising:
- (a) identifying a set of guard tones in wireless Orthogonal Frequency Division Multiplexing (OFDM) signals;
- and
- (b) utilizing a portion of said set of guard tones for side channel communication.
A method for providing side channel communication between wireless communication devices, the method comprising:
- (a) identifying unused bits in wireless Orthogonal Frequency Division Multiplexing (OFDM) symbols;
- and
- (b) utilizing said unused bits for side channel communication.
Dependencies are inferred from the claim text.