Patent ID: 7545776

Claim:
Method for improving the handover procedure between two WLAN cells based on IEEE 802.11 standard and working at two different frequencies, said method comprising the step of performing measurement(s) on the second frequency in order to verify the necessity or the opportunity to realise a handover, the first frequency being currently used to transmit data, method wherein it comprises more precisely: first sending at least one dummy or fake data or control frame or management on said first frequency which is currently used for transmitting data, said data or control frame comprising a duration data with a value at least equal to the time needed to perform said measurement(s) at said second frequency, and, then performing said measurement(s) on said second frequency for a time period corresponding at the most to the value of the duration data set in the sent dummy or fake data or control frame, while any terminal, station, access point or similar entity of the concerned WLAN is forbidden or disabled to send or transmit any data on said first frequency during a time period corresponding to said duration data value.