Patent ID: 7379438

Claim:
A method for contention control in a wireless network comprising a Quality-of-Service (QoS)-enabled access point (QAP) and a plurality of Quality-of-Service-enabled stations (QSTA), comprising: the QAP broadcasting an initial number of time slots and an upper limit to the QSTAs; the QSTAs each generating a random number between 0 and 1; and choosing the QSTAs having a random number lower than the upper limit to be contenders; the contenders along with the QAP recursively performing a contention process within a potential time period, wherein the potential time period satisfies a confidence level of QoS according to experiment data, and the contention process comprising: the contenders each selecting a time slot from the initial number of time slots and issuing a transmission opportunity (TXOP) reservation request to the QAP in the time slot; the QAP collecting all TXOP reservation requests to generate a reservation result recording reservation amounts of all time slots; during the potential time period, the QAP attaching a new number of time slot to the reservation result only if more than one contenders are collided on the same time slot; upon receipt of the reservation result attached with the new number of time slot, the collided contenders along with the QAP repeating the contention process to reselect new time slots; and concluding the contention process if all contenders successfully complete the time slot selection without collision.