Patent ID: 7653038

Claim:
A wireless network device comprising: a first media access controller (MAC) that generates a first output signal; a second MAC that generates a second output signal; an arbitration circuit that selects one of the first output signal and the second output signal based on a priority relationship between the first MAC and the second MAC; and a physical layer module that transmits the selected one of the first output signal and the second output signal, and that generates a clear channel assessment (CCA) signal, wherein the arbitration circuit generates a first CCA signal and a second CCA signal based on the CCA signal, and wherein the first CCA signal and the second CCA signal determine when the first output signal and the second output signal are generated, respectively, wherein the first MAC and the second MAC include a first output queue and a second output queue, respectively, wherein the arbitration circuit selectively generates a first drop signal and a second drop signal, and wherein the first MAC and the second MAC flush the first output queue and the second output queue, respectively, in response to the first drop signal and the second drop signal, respectively.