Sierra Wireless AirPrime SL808 Series Product Technical Specification & Customer Design Manuallines page 89

Table 7-2: Supported GSM / GPRS specifications (Continued)
Item
VT + PS call (subject to
network availability)
Packet Cell Change Order from
GSM
Background PLMN search
Configurable Release 5 or
Release 99 support
Circuit-switched data bearers
Data bearers
HSDPA
Data rates
HSDPA logical channels
HSDPA transport channels
Incremental redundancy
Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change

UTRAN
Comments
Simultaneous VT (Video Terminal) and PS (Packet Switched)
calls are supported.
Call transfer between GSM-based and UTRAN-based cells is
supported.
Improved algorithm for Higher Priority PLMN (HPPLMN) search
while camped on a 3G cell.
These circuit-switched data bearers are supported on 3G
networks:
Synchronous transparent mode = 64000 bps
•
Synchronous transparent mode = 56000 bps
•
Asynchronous V110 UDI = 14400 bps
•
Asynchronous V110 UDI = 28800 bps
•
Asynchronous V110 UDI = 38400 bps
•
Asynchronous V120 = 14400 bps
•
Asynchronous V120 = 28800 bps
•
Asynchronous V120 = 56000 bps
•
The following data rates are supported:
Category 12 (1.8 Mbps)
•
Category 5/6 (3.6 Mbps)
•
These HSDPA logical channels are supported:
HS-SCCH
•
HS-DPCCH
•
HS-PDSCH—Up to ten HS-PDSCH channels are
•
supported.
HS-DSCH is supported at these rates:
120 kbps
•
240 kbps
•
360 kbps
•
IR adjusts the physical layer code rate to actual channel
conditions by incrementally transmitting redundant information
until decoding is successful. Automatic Repeat Request (ARQ)
protocol takes care of requesting and retransmitting incorrectly
received blocks. ARQ enables both dynamic RLC window
management (to avoid window stalling) and dynamic RLC
polling frequency (to minimize retransmission delay and save
radio bandwidth).
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