Since the Second World War, wireless communication has been given more attention because of its military application, which significantly improved the limitations of information transmission in the environment. Since then, wireless communication has been developing, but it lacks a wide range of communication standards. As a result, the IEEE 802.11 standard for wireless local area networks was developed in 1997, and subsequent protocols have been continuously improved and optimized in accordance with this protocol.
(1) The working group of IEEE 802.11 wireless two-part specification developed:
First, formulate relevant standards for the 802.11 physical layer.
Second, formulate relevant standards for the 802.11 MAC layer
(2) IEEE802.11 physical layer: it mainly defines the working frequency band of the wireless protocol (for example, 2.4gwifi: it refers to the working frequency band of 2.4GHz), the modulation coding mode, and the support of its highest speed (the rate is related to different protocols and different modulation modes); The MAC layer is mainly used for some functions in the wireless network or the embodiment of some specific protocols, such as QoS, which is a speed limit for the network, mesh technology, and wireless security standards.
At present, after 11n, the optimization of the MAC layer has achieved the best effect in the market. On this basis, the improvement in transmission rate is not obvious. The PHY layer is optimized in subsequent WiFi 6 and above.
The physical layer and MAC layer related to IEEE802.11 are embodied as follows.
The physical layer and MAC layer related to IEEE802.11 are embodied as follows.
The above is the knowledge explanation of the IEEE 802.11 protocol family members brought by Shenzhen HDV Phoelectron Technology Co., Ltd. hope this article can help you to increase your knowledge. Besides this article if you’re looking for a good optical fiber communication equipment manufacturer company you may consider about us.
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