Get WiFi, WiMAX and LTE Multi-hop Mesh Networks: Basic PDF

By Hung-Yu Wei

ISBN-10: 0470481676

ISBN-13: 9780470481677

Wifi, WiMAX, and mobile Multihop Networks offers an summary of WiFi-based and WiMAX-based multihop relay networks. because the first textual content to hide IEEE 802.16j multihop hop relay know-how, this progressive source explores the most recent advances in multi-hop and ad-hoc networking. not just does this reference give you the technological elements, but additionally the purposes for the rising expertise and architectural concerns. starting from introductory fabric to complex themes, this guidebook, plus PowerPoint slides, is key for engineers, researchers, and scholars attracted to studying extra approximately WiFi and WiMAX multihop relay networks.

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Extra resources for WiFi, WiMAX and LTE Multi-hop Mesh Networks: Basic Communication Protocols and Application Areas

Sample text

And ad-hoc networking means exchanging information with devices selected in an ad-hoc manner. A question arises: how do we select a given device? How do we communicate with someone in ad-hoc manner? And what does choosing someone “ad-hoc” mean? Could it be any user/device within the range? Ideally speaking, the answer is yes. But, in practice, other constraints need to be satisfied, for example, trust, privacy, security, willingness to share, and energy consumption. Even if we are able to select “someone,” such ad-hoc “someone” tends to be anonymous, hiding his/her identification details.

Finally, it is very easy to cheat in such a service, for example, sending falsified rankings about nodes that one never cooperated with. While it would be hard to determine and to keep the trustfulness information about the nodes, one may expect that a majority of the users would risk the selfish behavior, counting on the fact that such behavior would be practically undetectable by the others. However, if a critical mass of such users is reached, the network would become practically unusable—no multi-hop relaying would be possible, and no ad-hoc cooperation would be established.

A question arises: is filtering really necessary? The answer is yes, for at least two reasons. First, proper filtering may substantially improve local security, for example, by blocking network messages infested with viruses or similar dangerous content. Second, networking activities always consume station resources—computational power, network bandwidth, and most importantly, in mobile stations, energy in batteries. Let us now discuss these two filtering reasons in more detail. First, consider filtering for local security protection.

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WiFi, WiMAX and LTE Multi-hop Mesh Networks: Basic Communication Protocols and Application Areas by Hung-Yu Wei


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