MAC Access Delay of IEEE 802.11 DCF

Performance Analysis of IEEE 802.11 DCF: Throughput, Delay, and Fairness

Throughput, delay, and fairness are three most important performance metrics in IEEE 802.11-based wireless networks. In this paper, we provide a simple but precise analytical model to evaluate the above three metrics. Different from the previous models that have focused either on throughput or on delay, our model is unique as we obtain throughput, delay, and fairness all together. Moreover, by ...

Priority Access Schemes based on IEEE 802.11 DCF

A Priority Scheme for IEEE 802 . 11 DCF Access Method ∗

SUMMARY IEEE 802.11 is a standard for wireless LANs. The basic access method in its MAC layer protocol is the distributed coordination function (DCF) for the ad hoc networks. It is based on the mechanism of carrier sense multiple access with collision avoidance (CSMA/CA). DCF is used to support asyn-chronous data transmission. However, frames in DCF do not have priorities, making it unsuitable ...

A MAC and PHY Cross-Layer Analytical Model for the Goodput and Delay of IEEE 802.11a Networks Operating Under Basic Access and RTS/CTS DCF Schemes

 We have developed a theoretical cross-layer model that allows assessing the goodput and delay of IEEE 802.11 local area networks (WLANs) operating simultaneously under the distributed coordination function (DCF) basic access (BA) and request-to-send/clear-to-send (RTS/CTS) medium access control (MAC) protocols under saturated traffic over correlated fading channels. A comparison between numer...

Access delay in LonTalk MAC protocol

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