Patent ID: 7756055

Claim:
A method of transmission, the method comprising receiving at a first destination, a transmission from a first source; determining from the transmission from the first source, the maximum permitted additional interference subject to which the first destination can still communicate; sending an acknowledgement of the transmission and including in the acknowledgement an indication of the determined maximum permitted additional interference; wherein a second source determines whether it has received the transmission from the first source, or the acknowledgement from the first destination, at a power level lower than that of the maximum permitted additional interference given in the indication; and if so, the second source sends a transmission to a second destination, which at least partially overlaps in time, communication between the first source and first destination, wherein an indication of the transmit power at the first destination is included in the acknowledgement, wherein the maximum permitted power that the second source is permitted to transmit is equal to the power level at which the second source has received the acknowledgement from the first destination subtracted from the transmit power at the first destination included in the acknowledgment plus the power level of the maximum permitted additional interference given in the indication.