A probe, listen and select (PLS) technique can be used to select from an available frequency spectrum a frequency band whose communication quality is suitable for wireless communication at a desired rate. Probe packets can be transmitted on different frequencies (223) during a known period of time (TPLS),...http://www.google.fr/patents/US7050402?utm_source=gb-gplus-shareBrevet US7050402 - Wireless communications with frequency band selection
Wireless communications with frequency band selection
