ICX35-HWC ♦ Industrial Cellular Gateway
Cellular Technology Definitions
3G/4G LTE
User Manual
ProSoft Technology, Inc.
Page 121 of 127
HSDPA
HSDPA (High-Speed Downlink Packet Access) is a cellular technology allowing for
higher data transfer speeds. In HSDPA mode of operation, max speeds are up to 7.2
Mbit/s in the downlink and 384 kbit/s in the uplink. HSDPA uses Adaptive Modulation
and Coding (AMC), fast packet scheduling at the Node B (Base Station) and fast
retransmissions from Node B (known as HARQ-Hybrid Automatic Repeat Request)
to deliver the improved downlink performance vs. UMTS and EDGE. HSPDA (and
HSUPA) falls back to UMTS, EDGE or GPRS (in order of precedence). This feature
allows you to have seamless connectivity no matter where your ICX35-HWC is
located.
HSUPA
HSUPA (High-Speed Uplink Packet Access) is a cellular technology which most
closely resembles a broadband synchronous connection. The upload and download
speeds are maximized to provide a faster throughput, reaching speeds up to 2.0
Mbit/s for the uplink and 7.2 Mbit/s for the downlink. Please check with your network
provider on the availability of HSUPA.
LTE
Long Term Evolution (LTE) commonly referred to at 4G LTE, is based on the
GSM/EDGE and UTMS/HSPA network technologies, increasing the capacity and
speed using a different radio interface together with core network improvements.
LTE offers the highest link rates currently available.
Security
1x and EV-DO data transmissions are highly secure. Originally developed based
upon the "spread spectrum" pioneered by the US Department of Defense, security in
CDMA technologies is obtained by spreading the digital information contained in a
particular signal of interest over multiple coded paths, over a much greater bandwidth
than the original signal.
UMTS
UMTS (Universal Mobile Telecommunications System) supports up to 1920 kbit/s
data transfer rates, although most users can expect performance up to 384 kbit/s. A
UMTS network uses a pair of 5 MHz channels, one in the 1900 MHz range for uplink
and one in the 2100 MHz range for downlink.
