A Novel Pure Limited Queueing Model for IEEE 802.11 Contention-Free Networks
IEEE 802.11 point coordination function (PCF) protocol plays a fundamental and core role for other contention-free protocols such as IEEE 802.11e HCCA. In PCF, each station transmits at most one packet upon polled. Existing theoretical studies on PCF either reconstruct complicated queueing models that are not easily extended for heterogeneous traffic, or convert the PCF system into an exhaustive queueing system that are difficult to understand. This paper propose applying the classic pure limited queueing model for performance analysis to overcome existing methods drawbacks. The proposed model is naturally consistent with the semantics of the PCF protocol and therefore it is most easy to understand and simpler than existing models. The derived theoretical expressions are exactly same to the existing results that are already verified by extensive simulations.
ieee 802.11 pcf wireless lan queueing analysis