The Contention free period is utilized in wireless networks assisting the IEEE 802.11 standard. It characterizes a time period during which admittance to the Wireless Medium is without contention. This is constrained by both the PCF and HCF. When the AP is working in PCF mode Contention-free Period (CFP) - happens. During the CFP, the AP polls customers in PCF mode about their aim to transmit information. This is a technique for focusing on customers."