Patent ID: 7382757

Claim:
A method of operation of an access point for supporting a first plurality of devices operating on a first frequency band and second plurality of devices operating on a second frequency band, the method comprising: providing communication in a first transition beacon interval at the second frequency band by: initiating a first contention free period at the first frequency, wherein the first plurality of devices remain associated with the access point during the first contention free period, switching from the first frequency to the second frequency, communicating with devices operating at the second frequency including transmitting multicast data and receiving and transmitting distributed coordinated function data and acknowledgements; and providing communication in each of a first plurality of beacon intervals following the first transition beacon interval at the second frequency band, wherein each of the first plurality of beacon intervals is characterized by a beacon interval time, by: temporarily ceasing the step of communicating with devices operating at the second frequency to initiate a second contention free period at the second frequency by signaling a contention free period beacon at the second frequency, wherein the second plurality of devices remain associated with the access point during the second contention free period, switching from the second frequency to the first frequency, initiating another contention free period at the first frequency, switching from the first frequency back to the second frequency, communicating with devices operating at the second frequency including receiving and transmitting distributed coordinated function data and acknowledgements, delaying the signaling of at least one of the contention free period beacons of one or more of the first plurality of beacon intervals based on a completion delay of a distributed coordinated function mode, and reducing a beacon interval time of the one or more of the first plurality of beacon intervals following a delayed beacon interval so that an average rate of the reduced beacon interval time and the delayed beacon interval time approaches the beacon interval time.