R&S CMW-KG4 Series, Руководство пользователя, Страница: 46 / 988

WCDMA Signaling
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
46 User Manual 1173.9657.02 ─ 11
A number of parameters must be configured appropriately to reach the maximum data
rate supported by a UE. Use the wizard for this purpose, see
chapter 2.2.17, "WCDMA
Wizards" , on page 65.
HSDPA UE categories
The UE category relevant in the context of HSDPA is the HS-DSCH physical layer cat-
egory. It indicates for example the support of MIMO and dual carrier, the supported
modulation schemes, the maximum number of HS-PDSCH channelization codes per
connection, the minimum supported inter TTI distance, the maximum number of bits in
an HS-DSCH transport block per TTI and the resulting maximum DL data rate.
The UE categories 1 to 12 have been introduced in R5. MIMO and dual carrier opera-
tion are not supported. The following table provides an overview.
From the table you can see that the maximum HSDPA data rate for an R5 UE equals
13.98 Mbps.
Table 2-9: UE categories for HSDPA (R5)
UE Category Modulation Max no of
Codes
Min Inter TTI
Distance Max Bits per
TTI Max DL Data
Rate [Mbps]
1 QPSK,
16-QAM
5 3 7298 1.22
2
3 2 1.82
4
5 1 3.65
6
7 10 14411 7.21
8
9 15 20251 10.13
10 27952 13.98
11 QPSK 5 2 3630 0.91
12 1 1.82
The UE categories 13 to 20 have been introduced in R7. Most categories support
MIMO operation. The following table provides an overview.
From the table you can see that the maximum HSDPA data rate for an R7 UE with
MIMO equals 42.20 Mbps.
Properties common for all R7 categories:
●
no dual carrier operation
●
maximum number of HS-PDSCH channelization codes = 15
●
minimum inter TTI distance = 1
General Description
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