C5621 and C33 User Guide
1/1553-KRD 131 24 Uen Rev D 2011-11-22
Ericsson AB 2011
8 (37)
Ericsson Confidential
2
Communication
The C5621 and C33 Mobile Broadband Modules keep end users up to date by
providing them the best available mobile service wherever they are.
C5621 and C33 are dual mode devices, able to connect via UMTS/HSPA and
GSM/GPRS/EDGE. The user will remain connected without having to think
about what system is being used – the handover between two systems and
network technologies is automatically managed by C5621 and C33. C5621
comes in a hardware version supporting both quad-band UMTS (Band I, II,
V/VI and VIII) and quad-band GSM/GPRS/EDGE (850/900/1800/1900 MHz).
C33 has dual band support.
2.1
Network Technologies
2.1.1
3G
3G (third-generation) services combine high-speed radio access with IP-based
(Internet Protocol) services. This not only means fast mobile connection to the
Internet, but also a totally new way to communicate, access information,
conduct business, learn and be entertained.
Compared to 2G mobile networks, 3G significantly boosts network capacity, a
much needed feature in densely populated areas. This means that operators
are able to support more users and offer them more sophisticated services.
2.1.1.1
HSPA Evolution
For C5621, HSPA (High Speed Packet Access) Evolution enables downlink
speeds up to 21 Mbps (HSDPA cat 14) and uplink speeds up to 5.76 Mbps
(HSUPA cat 6). Higher order modulation results in higher possible speeds in
the network.
2.1.1.2
HSPA
HSPA is available in all developed 3G markets. With the HSDPA solution,
C5621 is capable of downlink speeds of up to 14.4 Mbps (HSDPA cat 10) and
uplink speeds of up to 5.76 Mbps (HSUPA cat 6). This, together with its
antenna diversity technology, gives C5621 and C33 a fast and reliable
connection.
C33 supports HSPA (High Speed Packet Access) downlink speeds up to 3.6
Mbps (HSDPA cat 6) and uplink speeds up to 384 kbps (WCDMA).
