User guide

Part 2 – Extended AT Commands for HSPA Modems Appendix B – HSDPA / HSUPA Categories
High Speed HSPA-H4 AT Commands Reference Guide (Document S000483A) 142
Appendix B – HSDPA / HSUPA
Categories
The following tables describe standard HSDPA and HSUPA categories.
HSDPA-Capable Terminals
Category Maximum Number
of Supported
HS-DSCH Codes
Minimum
Inter-TTI
Interval
Number of Soft Values
In Terminal’s Hybrid
ARQ Buffer
Theoretical
Download
Max. (L1 Peak
Rate [Mbps])
Modulation
Category 1 5 3 19,200 1.2 16QAM, QPSK
Category 2 5 3 28,800 1.2 16QAM, QPSK
Category 3 5 2 28,800 1.8 16QAM, QPSK
Category 4 5 2 38,400 1.8 16QAM, QPSK
Category 5 5 1 57,600 3.6 16QAM, QPSK
Category 7 10 1 115,200 7.2 16QAM, QPSK
Category 9 15 1 172,800 10.0 16QAM, QPSK
Category 10 15 1 172,800 14.0 16QAM, QPSK
Category 11 5 2 14,400 0.9 QPSK
Category 12 5 1 28,800 1.8 QPSK
HSUPA-Capable Terminals
E-DCH
Category
Maximum Number
of E-DCH Codes
Transmitted
Minimum
Spreading
Factor
Support for
10 ms; 2 ms
TTI E-DCH
Maximum
Data Rate
with 10 ms TTI
Maximum
Data Rate
with 2 ms TTI
Category 1 1 SF4 10 ms only 0.72 Mbps N/A
Category 2 2 SF4 10 ms and 2 ms 1.45 Mbps 1.45 Mbps
Category 4 2 SF2 10 ms and 2 ms 2.0 Mbps 2.91 Mbps
Category 6 4 SF2 10 ms and 2 ms 2.0 Mbps 5.76 Mbps