Media access control (MAC) sub-layer is at the bottom of Ad Hoc network’s protocol stack, its role is to provide an effective mechanism for allocating limited wireless channel resources, therefore, whether the MAC layer can efficiently use the limited wireless cheap jeans shop channel bandwidth can be a key factor to the protection of QoS provided by the upper protocol mechanisms. The characteristic of wireless channel is mainly embodied in the following layers of network layer, and some QoS mechanism can be applied more efficiently in the MAC layer, so it is also a hotspot to research the QoS protection in the MAC layer. Ad Hoc Network MAC layer protocol can be divided into random competition category, type and mixed type of distribution protocol, the discount wedding prom dresses current studies mainly used IEEE 802.11 MAC protocol which has been most widely used. Therefore, this paper will also use the IEEE 802.11 MAC protocol in Ad Hoc Network MAC Protocol for chi pink dazzle QoS research.In this paper, the location, the structure and the frame format of the MAC layer are introduced ralph lauren polo shirts firstly, and then by analyzing the distributed coordination chi hair straightener function (DCF) mechanism and its basic back-off algorithm BEB, an exponential-based half back-off algorithm ZDCF is proposed. Besides, combining the needs of QoS protection, ZDCF algorithm is applied to the low-priority business window back on mechanism of DCF Enhanced Distributed Channel Access (chi hair straighteners), and a new strategy of ZEDCA is proposed which dynamically modifies Transmission Opportunity (TXOP) by detecting the status of network.
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