Applied Networking-IV (Mobile Networking Part-1)

04 Jun

TDMA: Time Division Multiple Access
FDMA: Frequency Division Multiple Access
CDMA: Code Division Multiple Access

Wireless Standards

What is WCDMA & HSPA
1.Universal Mobile Telecommunications System (UMTS) – WCDMA
as the underlying interface
2.Supports up to 14 Mbps rates with HSDPA (typical present deployed rates per user 384kbps)
3.Frequency bands
*1885-2025 Mhz (uplink), 2110-2200 Mhz (downlink)
*US: 1710-1755 MHz and 2110-2155 MHz
4.W-CDMA has 5 Mhz wide radio channels (CDMA2000 transmits on
one or several pairs of 1.25 Mhz radio channels).
5.HSDPA allows networks based on UMTS to have higher data rates
(1.8. 3.6, 7.2, 14.4 Mbps via AMC, and HARQ, fast packet
6.UMTS air interface forms Generic Radio Access Network (GeRAN)
which can be connected to various backbone networks like the
Internet, ISDN, GSM or UMTS.
7.Using PCMCIA or USB card, or cellular router customers are able to
access 3G broadband services

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Posted by on June 4, 2011 in about me



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