Methods for identification of IEEE 802.11b radio signals
OwnerRandolph L. Durrantinventor
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Abstract
In one embodiment, the invention provides a method for operating a Bluetooth receiver. The method comprises sampling energy levels at selected frequencies within a frequency spectrum; comparing the sampled energy levels to an energy distribution pattern for a wideband signal; and identify a presence of the wideband signal if the sampled energy levels match the energy distribution pattern.
Claims22
A method for operating a Bluetooth receiver, the method comprising:
- sampling energy levels at selected frequencies within a frequency spectrum;
- comparing the sampled energy levels to an energy distribution pattern for a wideband signal;
- and
- identifying a presence of the wideband signal if the sampled energy levels match the energy distribution pattern.
A method for operating a Bluetooth receiver, the method comprising
- receiving a plurality of signals on a particular channel;
- measuring timing information relating to the signals;
- and
- determining a source of the signals based on the timing information.
A method for operating a Bluetooth receiver, the method comprising:
- identifying the SYNC word of an 802.11x signal;
- storing the SYNC word;
- receiving a signal of unknown origin;
- and
- correlating the signal of unknown origin with the stored SYNC word to determine if the unknown signal is an 802.11x signal.
A method comprising:
- receiving a 1 MHz wide signal on a predefined channel of a Bluetooth receiver;
- differentially demodulating the 1 MHz wide signal to obtain a sequence of bits;
- comparing the sequence of bits to a stored code;
- and
- identifying the 1 MHz signal as being part of an 802.11x signal if the sequence of bits and the stored code match.
A Bluetooth receiver comprising:
- a component to sample energy levels at selected frequencies within a frequency spectrum;
- a component to compare the sampled energy levels to an energy distribution pattern for a wideband signal;
- and
- a component to identify a presence of the wideband signal if the sampled energy levels match the energy distribution pattern.
A Bluetooth receiver comprising:
- a component to receive a plurality of signals on a particular channel;
- a component to measure timing information relating to the signals;
- and
- a component to determine a source of the signals based on the timing information.
A Bluetooth receiver comprising:
- a component to identify the SYNC word of an 802.11x signal;
- a component to store the SYNC word;
- a component to receive a signal of unknown origin;
- a component to correlate the signal of unknown origin with the stored SYNC word to determine if the unknown signal is an 802.11x signal.
A Bluetooth receiver comprising:
- a component to receive a 1 MHz wide signal on a predefined channel of the Bluetooth receiver;
- a component to differentially demodulate the 1 MHz wide signal to obtain a sequence of bits;
- a component to compare the sequence of bits to a stored code;
- and
- a component to identify the 1 MHz signal as being part of an 802.11x signal if the sequence of bits and the stored code match.
Dependencies are inferred from the claim text.