We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Nobody downloaded yet

An overview of IEEE 802.11 (wireless network standard) - Essay Example

Comments (0)
The leading authority involved in the specification and ratification of technology related standards is the 'Institute of Electrical and Electronics Engineers' (IEEE) (BECTA, 2005). Presently there are three wireless standards originated from IEEE. They are IEEE 802.11a, 802.11b and 802.11g.
Download full paper
An overview of IEEE 802.11 (wireless network standard)
Read TextPreview

Extract of sample
An overview of IEEE 802.11 (wireless network standard)

Download file to see previous pages... It is the most widely used wireless network standard. 802.11b standard was ratified by IEEE in 1999. The main features of this standard are as given below.These features are adequate for most data transfer applications and for accessing internet but might be inadequate for multimedia acce It might also face problems when users in large number access the network from a single access point. The frequency of operation, i.e., 2.4 GHz, coincides with the spectrum used by cordless phones, microwave ovens, etc. Therefore the interference problems are more likely to occur.802.11a suits to the conditions of multiple users accessing the network with high data rates. It is best suited for classrooms where students can access multimedia, digital video or database packages (BECTA, 2005).IEEE accepts the 802 standard logical link control (LLC) protocol. It also offers, for the purpose of wireless communication, physical layer (PHY) and medium access control (MAC) sub layers. There are two physical layers offered by 802.11 namely, direct sequence spread spectrum (DSSS) and frequency hopping spread spectrum (FHSS). According to the transmission methods and frequencies 802.11 is categorised into three main groups; 802.11b, 802.11a, 802.11g. The main features of these three categories have already been stated above. The main drawback of 802.11a is that it is not backward compatible with 802.11b as both of them use a different frequency spectrum. This results in lesser interest of users towards 802.11a. The advantage of 802.11a, however, is that it operates in 5 GHz spectrum which can be used unlicensed. The 2.4 GHz spectrum used by other two standards interferes with that of other devices such as cordless phones and microwave ovens. The 802.11 MAC supports two basic medium access protocols: contention-based distributed coordination function (DCF) and optional point coordination function (PCF). (Zhu, Hua, Li, Ming, Chlamtac, Imrich & Prabhakaran, B., 2004). PCF causes the wireless channel to be divided into super frames. Super frames in turn provides two periods, a contention-free period (CFP) for PCF and a contention period (CP) for DCF. There is a device known as point co-ordinator which is usually an access point (AP). The point co-ordinator polls for grant of access to the wireless channel at the start of CFP. On obtaining the channel, it checks the stations regularly and sets priorities to these stations as per their importance, i.e., their ...Download file to see next pagesRead More
Comments (0)
Click to create a comment
IEEE 802.11
No need for cables to connect to the network anymore which exists in the traditional wired local area networks. The Institute of Electrical and Electronics Engineers (IEEE) developed and released first wireless standards in 1997. The purpose of the wireless local area network was to provide the same communication services were provided by wired LANs but through the wireless technology.
4 Pages(1000 words)Research Paper
Network Management Essay
Performance management, traffic routing, etc. are some other activities that the network manager needs to perform. Network management tools can help keep the network performance at optimal levels. They provide greater visibility and control over the network (Networking Views, 2006).
22 Pages(5500 words)Essay
Wireless Security Essay
Mobile phones too, they help you to send Multi-Media Messages to other people with cell phones or individual email addresses. You can also use General Packet Radio Service that is probably provided by your mobile phone network's operator to access to the internet.
9 Pages(2250 words)Essay
Excessive filtering of the Internet in schools
In this paper we will discuss the security issues for modern libraries and the ways un-authorized people can steal libraries information. This paper is a good help for many other organizations with electronic data and a computer network too. Wireless Networks are widely used both for individual or business purposes.
10 Pages(2500 words)Essay
Wireless management
In such cases, you would use a WLAN Router, often available as combination unit of WLAN-router and DSL / ADSL modem. Using a Wireless Access-point, networks can be configured with systems connected via cables and via Wireless connections. (WLAN, 2006)
5 Pages(1250 words)Essay
WiMax A Technology for Tomorrow
WiMax will be the standard of wireless connectivity for many years to come and the only standard that will ensure interconnectivity and inter-operability and it will be to the advantage of the GCC countries to adopt this standard for implementation of wireless and mobile services.
10 Pages(2500 words)Essay
Detecting rogue access point using Omnipeek software to analyze the wireless network
The Open Systems Interconnect reference model formulated by the International Standards Organization (ISO), defines at least seven layers to enable communication through the network. These layers are the physical layer, the data link layer, the network layer, the transport layer the session layer.
21 Pages(5250 words)Essay
The latest technology in wireless
z and Marconi established the possibility of radio communication, mankind has endeavored to accomplish the vision of communication through the wireless and also the multimedia personal communications, allowing public to converse with somebody, anyplace, at some occasion, by
4 Pages(1000 words)Essay
Network Architectures and Operating System implications within Well People NHS Trust
These organizations were persuaded that 802.16 apprehended the solution to allocation urban as well as rural clientele in rigid situations by
8 Pages(2000 words)Essay
Wireless network design
The users have different operating systems but are a still able to connect via the wireless network. Wireless network offers same internet access as the wired internet but without the process of drilling into the
6 Pages(1500 words)Essay
Let us find you another Essay on topic An overview of IEEE 802.11 (wireless network standard) for FREE!
Contact us:
Contact Us Now
FREE Mobile Apps:
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us