Abstract
This chapter deals with Wireless Local Area Network (WLAN) standards and protocols. WLAN supports only slow mobility compared to GSM, GPRS and UMTS which allow mobility over a wide geographically dispersed area. WLAN is mainly used for communication within an organization, or a small building, typically, convenient for a university campus. WLAN is based on IEEE 802.11 set of standards. Three WLAN operational standards IEEE 802.11b, IEEE 802.11g, and IEEE 802.11n use crowded 2.4GHz band. Though IEEE 802.11a use a less crowded 5GHz band, its use has not caught on due to low penetration and shorter range. In this chapter, all WLAN related wireless standards including the associated radio transmission technologies have been discussed. It also deals with the protocols for PHY and MAC with special focus on Distributed Coordination Function (DCF) and Point Coordination Function (PCF).
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