Patent ID: 8411610

Claim:
In a wireless network comprising at least one Base Station adapted to communicate with a first plurality of Mobile Stations, a method for transmitting a communication frame which comprises aggregated multi unicast information within broadcasted information intended for a second plurality of Mobile Stations, wherein said information is broadcasted by using more than one Modulation and Coding Scheme (MCS), said method comprises the steps of: a. at said Base Station, receiving indications of bandwidth requests generated by said second plurality of Mobile Stations, said second plurality of Mobile Stations belonging to the first plurality of Mobile Stations; b. identifying more than one decoding capabilities, wherein each of the identified decoding capabilities is associated with at least one Mobile Station belonging to said second plurality of Mobile Stations; c. preparing more than one bandwidth request acknowledgement messages in response to said indications of bandwidth requests received; and d. transmitting towards said second plurality of Mobile Stations, a communication frame comprising the more than one bandwidth request acknowledgement messages, wherein the number of the more than one bandwidth request acknowledgement messages corresponds to the number of different decoding capabilities identified, and wherein each of the more than one bandwidth request acknowledgement messages is transmitted at an MCS that corresponds to a respective decoding capability that has been identified, and wherein at least one of the bandwidth request acknowledgement messages is transmitted for each of a third plurality of Mobile Stations selected from among said second plurality of Mobile Stations, and wherein each of said third plurality of Mobile Stations is capable of decoding messages at the same decoding rate as the other Mobile Stations belonging to said third plurality of Mobile Stations.