Patent ID: 9197482
Filing Date: 2015-11-24
Classification: G08C,H04L,H04W

Abstract:
1. A computer-implemented method in an access point for accessing a medium for data transmission in a wireless communication system, the method comprising the steps of: determining a QoS (quality of service) type for traffic received at the access point, wherein more than one type of traffic is determined; separately queuing the traffic at the access point responsive to the QoS type of traffic for separate processing; measuring an amount of each QoS type of external traffic; determining a stochastic model of contention for the medium comprising one or more contention parameters responsive to the measurements for each type of external traffic and a quality of service associated with each type of traffic, wherein: responsive to the amount of each QoS type of external traffic being below a preconfigured threshold, setting a Cw (contention window) back-off parameter and an AIFS (automatic interframe spacing) parameter to substantially zero to increase access to the medium, and responsive to the amount of each QoS type of external traffic being at or above a preconfigured threshold, setting a Cw back-off parameter and an AIFS time that increases based on a larger amount of recent traffic for each QoS type to reduce access to the medium; and contending for access to the medium separately for each type of traffic in response to the one or more contention parameters.