August 2003
Beginner to intermediate
288 pages
6h 51m
English
Content preview from Windows XP UnwiredBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Chapter 8. Cellular Networking
In theory, cellular networking offers the ultimate unwired experience: network connectivity as long as you are in range of a cell tower. In practice, it’s much less than its promise, but it’s still getting better every day. Most unwired power users employ a combination of Wi-Fi hotspots and cellular networking to satisfy their lust for bandwidth.
Cellular Networking Price and Performance
Cellular networking offers the following downstream speeds (for activities such as receiving email, downloading files via FTP, and surfing the Web):
19.2 Kbps on first generation (1G) networks. CDPD (Cellular Digital Packet Data) is a once-popular 1G service that cellular providers are hoping to phase out.
50-70 Kbps on early third-generation (3G) networks (often referred to as 2.5G), sometimes peaking to 144 Kbps. General Packet Radio Services (GPRS) is the leading 2.5G service. AT&T Wireless uses GPRS for its mMode consumer-oriented data plans and its Mobile Internet business-oriented data plans. T-Mobile uses GPRS for its T-Mobile Internet data plans.
144 Kbps and higher on 3G networks. CDMA2000, Enhanced Data GSM Environment (EDGE), and Wideband CDMA (WCDMA) are emerging 3G technologies. The first phase of CDMA2000 is 1x Radio Transmission Technology (1xRTT); it is used by Verizon’s Express Network and Sprint’s PCS Vision. At the time of this writing, EDGE is not widely available, but is reported to have been quietly deployed by AT&T Wireless and Cingular.
Upstream ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.