mobile wireless networks
Post on 04-Apr-2015
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DESCRIPTIONOverview of wireless and mobile technologies.Advances in signal processing technologies are a technological driver for wireless technologies. Different technologies like 3G (WAN), WLAN (LAN), Bluetooth (PAN) and WiMAX (MAN) target different applications and markets. Since most of the frequency spectrum is still regulated in the different countries, newer technologies aim for non-regulated bands such as the 2.4GHz and 5GHz ISM bands. In order to fully exploit untethered operation, wireless devices are fitted with roaming and handover protocols like 802.11r or Mobile IP. Layer 2 protocols typically provide faster handover but are restricted to specific link layer protocols. Layer 3 or higher protocols like Mobile IP are independent of the link layer thus work across heterogeneous networks.
Wireless / Mobile Networks Contents1. Wireless technologies overview 2. Radio technology 3. Radio technology problems 4. 802.11 WLAN Wireless LAN 5. Public mobile networks 6. Satellite Internet Access 7. Wireless mobility 8. Mobile IP RFC2002
Peter R. Egli 2014
1/29 Rev. 4.10
Wireless / Mobile Networks1. Wireless technologies overview (1/4)Nam e WiMAX Standard 802.16a, d F-Spectrum Div. Data rate 75Mbps Range 6km
Pow er cons. Applications / com m ents High Mobile MAN (users w ith PDAs, nomads). Will probably be supplanted by LTE.
TV broadcast frequencies
WRAN is a new w orking group in IEEE for using TV frequency for broadband access.
WiBro GSM (2G) CDMA (2G) EDGE (2.5G) EUCH (2.5G) CDMA2000 (3G) UMTS (3G) EV-DO (3.5G) HSDPA (3.5G) LTE (3.9G/4G) iMode VSAT TETRAPOL
802.16e Div. Div. N/A N/A N/A Div. N/A Div. 3GPP LTE N/A N/A ETSI
2.3GHz 850/1800/1900 N/A 850/1800/1900 Mhz N/A N/A N/A N/A N/A Candidate: 2.6GHz N/A N/A N/A
1Mbps 14.4Kbps 2Mbps 384Kbps N/A 144Kbps 2Mbps3.1M bps down 1.8M bps up