Sierra Wireless AirPrime SL808 Series, Product Technical Specification & Customer Design Manuallines, Page: 89 / 122

Rev 1 Dec.10 Proprietary and Confidential - Specifications subject to change 89
VT + PS call (subject to
network availability)
Simultaneous VT (Video Terminal) and PS (Packet Switched)
calls are supported.
Packet Cell Change Order from
GSM

UTRAN
Call transfer between GSM-based and UTRAN-based cells is
supported.
Background PLMN search Improved algorithm for Higher Priority PLMN (HPPLMN) search
while camped on a 3G cell.
Configurable Release 5 or
Release 99 support
Circuit-switched data bearers
Data bearers 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
HSDPA
Data rates The following data rates are supported:
•
Category 12 (1.8 Mbps)
•
Category 5/6 (3.6 Mbps)
HSDPA logical channels These HSDPA logical channels are supported:
•
HS-SCCH
•
HS-DPCCH
•
HS-PDSCH—Up to ten HS-PDSCH channels are
supported.
HSDPA transport channels HS-DSCH is supported at these rates:
•
120 kbps
•
240 kbps
•
360 kbps
Incremental redundancy 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).
Table 7-2: Supported GSM / GPRS specifications (Continued)
Item Comments