October 2012
Intermediate to advanced
368 pages
10h 14m
English
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Chapter 7. The Link Layer
All this technology for connection and what we really only know more about is how anonymous we are in the grand scheme of things.
—Heather Donahue
The Link Layer defines how two devices can use a radio to transmit information between one another. This includes defining the detail of a packet, advertising, and data channels. It also defines procedures for discovering other devices, broadcasting data, making connections, managing connections, and ultimately sending data within connections. This is compounded by the challenges of wireless communication systems in the 2.4GHz ISM band, including interference, noise, and deep fades.
7.1. The Link Layer State Machine
Before we discuss packets and how they are used, it is important ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.