WIRELESS NETWORK BOOK

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Top 10 Books on About Wireless Network Solutions Part 1 site has books ( and of course lots more than books) of all kinds, so it shouldn't. The number of books available on Wireless Networking is truly raudone.info to be completely honest, is anyone actually surprised?. Designing and Deploying n Wireless Networks by Jim Geier. Gain a practical understanding of the underlying concepts of the n standard and the.


Wireless Network Book

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Results 1 - 12 of Online shopping for Wireless Networks from a great selection at Books Store. Discover the best Wireless Computer Networks in Best Sellers. Find the top most popular items in site Books Best Sellers. technical insight, the book also aims to use this understanding of the principles of wireless networking technologies as a foundation on which, a discussion of the.

Computerized records can be transferred between departments without the requirement to decipher the legendarily illegible doctor scrawls. In the cluttered environments of an emergency room, rapid access to imaging data can quite literally be a lifesaver.

Many eductional institutions have enthusiastically adopted wireless LANs. More high speed data ports everywhere was assumed to be better. Nowadays, the leading stories in education are the colleges using wireless LANs to blanket coverage throughout the campus.

Radio spectrum allocation is rigorously controlled by regulatory authorities through licensing processes. Most countries have their own regulatory bodies, though regional regulators do exist. In the U. Many FCC rules are adopted by other countries throughout the Americas.

To prevent overlapping uses of the radio waves, frequency is allocated in bands, which are simply ranges of frequencies available to specified applications. ISM bands are set aside for equipment that, broadly speaking, is related to industrial or scientific processes or is used by medical equipment.

Perhaps the most familiar ISM-band device is the microwave oven, which operates in the 2.

I pay special attention to the ISM bands in the table because those bands allow license-free operation, provided the devices comply with power constraints. Common cordless phones operate in the ISM bands as well. The more common The ISM bands are generally license-free, provided that devices are low-power.

How much sense does it make to require a license for microwave ovens, after all? Wireless networks are an excellent complement to fixed networks, but they are not a replacement technology. Just as mobile telephones complement fixed-line telephony, wireless LANs complement existing fixed networks by providing mobility to users.

Servers and other data center equipment must access data, but the physical location of the server is irrelevant. As long as the servers do not move, they may as well be connected to wires that do not move.

At the other end of the spectrum, wireless networks must be designed to cover large areas to accommodate fast-moving clients. Typical Traditional network security places a great deal of emphasis on physical security of the network components. Data on the network travels over well-defined pathways, usually of copper or fiber, and the network infrastructure is protected by strong physical access control. Equipment is safely locked away in wiring closets, and set up so that it cannot be reconfigured by users.

Basic security stems from the admittedly marginal security of the physical layer. Although it is possible to tap or redirect signals, physical access control makes it much harder for an intruder to gain surreptitious access to the network.

Wireless networks have a much more open network medium. By definition, the network medium in a wireless network is not a well-defined path consisting of a physical cable, but a radio link with a particular encoding and modulation. Signals can be sent or received by anybody in possession of the radio techniques, which are of course well known because they are open standards.

Careful shopping online may get you cards for half of that. Furthermore, radio waves tend to travel outside their intended location. There is no abrupt physical boundary of the network medium, and the range at which transmissions can be received can be extended with high-gain antennas on either side.

When building a wireless network, you must carefully consider how to secure the connection to prevent unauthorized use, traffic injection, and traffic analysis.

Cable and Wireless Networks: Theory and Practice

With the maturation of wireless protocols, the tools to authenticate wireless users and properly encrypt traffic are now well within reach. Once a wired network is put in place, it tends to be boring, which is to say, predictable. Once the cables have been put in place, they tend to do the same thing day in and day out. Provided the network has been designed according to the engineering rules laid out in the specification, the network should function as expected.

Capacity can be added to a wired network easily by upgrading the switches in the wiring closet.

In contrast, the physical medium on wireless LANs is much more dynamic. Radio waves bounce off objects, penetrate through walls, and can often behave somewhat unpredictably.

Radio waves can suffer from a number of propagation problems that may interrupt the radio link, such as multipath interference and shadows. Without a reliable network medium, wireless networks must carefully validate received frames to guard against frame loss. Positive acknowledgment, the tactic used by Radio links are subject to several additional constraints that fixed networks are not. Because radio spectrum is a relatively scarce resource, it is carefully regulated.

Two ways exist to make radio networks go faster. Either more spectrum can be allocated, or the encoding on the link can be made more sensitive so that it packs more data in per unit of time.

1. Introduction

Additional spectrum allocations are relatively rare, especially for license-free networks. Faster coding methods can increase the speed, but do have one potential drawback. Because the faster coding method depends on the receiver to pick out subtle signal differences, much greater signal-to-noise ratios are required. Higher data rates therefore require the station to be located closer to its access point.

First PHY standard Featured both frequency-hopping and direct-sequence modulation techniques. Third PHY standard, but second wave of products. The most common Fourth PHY standard Applies the coding techniques of The most common technology included with laptops in Radio is inherently a broadcast medium. When one station transmits, all other stations must listen. Access points act much like old shared Ethernet hubs in that there is a fixed amount of transmission capacity per access point, and it must be shared by all the attached users.

Adding capacity requires that the network administrator add access points while simultaneously reducing the coverage area of existing access points. Many wireless networks are based on radio waves, which makes the network medium inherently open to interception. Properly protecting radio transmissions on any network is always a concern for protocol designers. Coping with the inherent unreliability of the wireless medium and mobility required several protocol features to confirm frame delivery, save power, and offer mobility.

Security was quite far down the list, and proved inadequate in the early specifications. Wireless networks must be strongly authenticated to prevent use by unauthorized users, and authenticated connections must be strongly encrypted to prevent traffic interception and injection by unauthorized parties. Technologies that offer strong encryption and authentication have emerged since the first edition of this book, and are a major component of the revisions for the second edition.

Wireless networking is a hot industry segment. Several wireless technologies have been targeted primarily for data transmission. Bluetooth is a standard used to build small networks between peripherals: Most people in the industry are familiar with the hype surrounding Bluetooth, though it seems to have died down as real devices have been brought to market.

In the first edition, I wrote that I have not met many people who have used Bluetooth devices, but it is much more common these days. I use a Bluetooth headset on a regular basis. Post-second-generation 2. After many years of hype and press from 3G equipment vendors, the rollout of commercial 3G services is finally underway. I recently subscribed to an unlimited GPRS service to get connected during my train trips between my office and my home.

Many articles quote peak speeds for these technologies in the hundreds of kilobits per second or even megabits, but this capacity must be shared between all users in a cell. Real-world downstream speeds are roughly comparable to dial-up modem connections and cannot touch an This is a book about Some people call A second name which has grown dramatically in popularity since the first edition of this book is Wi-Fi , from the interoperability certification program run by the Wi-Fi Alliance, the major trade association of Several standards groups are involved in Most of the effort remains concentrated in the IEEE , but important contributions to wireless LAN standards have come from several major locations.

In addition to its activities as a professional society, the IEEE works on standardizing electrical equipment, including several types of communication technology.

IEEE standardization efforts are organized by projects , each of which is assigned a number. Within a project, individual working groups develop standards to address a particular facet of the problem. Working groups are also given a number, which is written after the decimal point for the corresponding projects.

Wireless LANs were the eleventh working group formed, hence the name Within a working group, task groups form to revise particular aspects of the standard or add on to the general area of functionality. Task groups are assigned a letter beneath the working group, and the document produced by a task group combines the project and working group number, followed by the letter from the task group. In wireless networking, the first task group to gain wide recognition was Task Group B TGb , which produced the Interestingly enough, the case of the letter in a standards revision encodes information.

Lowercase letters indicate dependent standards that cannot stand alone from their parent, while uppercase letters indicate full-fledged standalone specifications.

In contrast, standards like The initial revision of Minor changes to the text were released as The most recent rollup is First standard Specified the MAC and the original slower frequency-hopping and direct-sequence modulation techniques. Second physical layer standard , but products not released until late Third physical layer standard , but second wave of products. Task group that produced a correction to the example encoding in Since the only product was a correction, there is no Inter-access point protocol to improve roaming between directly attached access points.

Standard to make Other regulators have adopted its mechanisms for different purposes. Task group to enhance communication between clients and network to better manage scarce radio use.

Wireless Networks and Mobile Computing

Task group to incorporate changes made by Task group founded to create a high-throughput standard. The design goal is throughput in excess of Mbps, and the resulting standard will be called Task group adopting Foremost on that list is mobility, since going wireless frees you from the tether of an Ethernet cable at a desk.

Wireless networks are also more flexible, faster and easier for you to use, and more affordable to deploy and maintain. The de facto standard for wireless networking is the With easy-to-install And The Definitive Guide, 2nd Edition is the perfect place to start.

The Future of Wireless Networks: Architectures, Protocols, and Services

Designing and Deploying Practical, start-to-finish guidance for successful deployment of With the ratification of the However, In this book, leading wireless expert Jim Geier systematically presents all the information and guidance that network architects, engineers, administrators, and managers need to maximize the performance and business value of new Drawing on extensive experience with real-world Each phase of wireless LAN deployment is organized into clearly defined steps, and multiple case studies and hands-on exercises show how to apply each technique.

This book is the fastest way to connect all your wireless devices, get great performance with everything from streaming media to printing, stay safe and secure, and do more with Wi-Fi than you ever thought possible!

Wireless networking has never, ever been this simple! About Latest Posts. Doug Atkinson.

An entrepreneur and executive with a passion for enterprise technology, Doug founded Solutions Review in Exam CWNA Only 2 left in stock - order soon. Key Features Timely coverage of new technologies: Communication without cables is the future of netwoking Advocates wireless networking solutions for any user, regardless of location, device or connection. Now updated and significantly revised, this 2nd edition contains new material on Its comprehensive coverage also makes it suitable for use as a textbook in graduate-level electrical engineering programs.

This comprehensive overview describes the underlying principles, implementation details and key enhancing features of Best sellers.

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