An overview of Wireless Networks WLAN

The purpose of this paper is to present the reader with a brief description of the requirements for a combined wired and wireless network, the importance of the capacity of a wireless network, and to solidify the authors knowledge in the area of telecommunication gained in the last four weeks. The paper includes an overview of wireless network and general terminology needed to understand the issues. The topic of the paper has been substituted from the original topic: Describe the LAN of your company. The paper is the result of a study of several white papers retrieved from the World Wide Web.

In recent years there has been increasing interest shown in wireless technologies for subscriber access, as an alternative to traditional twisted-pair local loop. A logical question is why this increase interest? Tom Fout in his paper titled Wireless LAN Technologies and Windows XP reports that the availability of wireless networking and wireless LANs can extend the freedom of a network user, solve various problems associated with hard-wired networks and even reduce network deployment costs in some cases.

Why a Wireless LAN? Fout elaborates that high-speed wireless LANs can provide the benefits of net

Another reason why WLAN is attractive is that today's standards-based wireless LANs operate at high speeds. The access the user has is typically more than 11 MBs or about 30 to 100 times faster than standard dial up or wireless WAN technologies. This bandwidth is certainly adequate to deliver a great user experience for a number of applications or services via the PC or mobile device. In addition, ongoing advancements with these wireless standards continue to increase bandwidth, with speeds of 22 MB.

Coverage is another design issues of a wireless network, the data rate is a function of distance, and the further a user is form the AP, the weaker the signal and the lower the data rate. Therefore, designing smaller cells with higher throughput, one can create an enterprise-quality experience. The number of users and their applications, which are the major drivers of bandwidth, dictates cells sizes. Walls and other objects will not naturally define cells.

Trapeze Network online white paper – 802.11 Tutorial.

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