Wireless LANs are now widely used in the business district, universities, airports and other public areas. The most common standard for wireless local area network is defined by IEEE 802.11 family of standards. To solve the problems of safety and the hidden terminal and exposed terminal, this paper introduces time division P-persistent random multi-channel access protocol with three-way handshake mechanism, its basic principle is that the channel is the continuous clock manner during channel is idle and the channel is the slot time manner during channel is busy. By the introduction of three-way handshake mechanism, we make the transfer of information more securable, solve the problem of the hidden terminal and exposed terminal, and improve the performance of the system. Use the averaging cycle period conduct analytical and simulation experiment with the control strategy mentioned above, the analytical results and simulation results show that the theoretical analysis and simulation experiments are consistent, prove the feasibility and validity of the proposed protocol.
