ProSoft Technology ICX30-HWC - Manual (Page 43)

ICX30-HWC ♦ Industrial Cellular Gateway GSM Communication (AT&T®)
3G Cellular (M2M) User Manual
ProSoft Technology, Inc. Page 43 of 64
June 22, 2015
4 GSM Communication (AT&T
®
)
In This Chapter
 HSUPA .................................................................................................. 43
 HSDPA .................................................................................................. 43
 UMTS .................................................................................................... 44
 EDGE .................................................................................................... 44
 GPRS .................................................................................................... 44
Many GSM Networks have been upgraded to support HSUPA. GSM Networks
use SIM cards which are smart cards containing the account holder's details. A
SIM can generally be moved from one device to another allowing for account
flexibility.
4.1 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.
4.2 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 ICX30-HWC is located.