WCDMA Signaling
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
23
User Manual 1173.9657.02 ─ 11
2.2.4 End to End Packet Data Connections
To set up a WCDMA packet data connection you need the Data Application Unit (DAU)
in addition to the "WCDMA signaling" application. The DAU itself is available as option
R&S CMW-B450x and the DAU measurements as R&S CMW-KM050. For IPv4 option
R&S CMW-KA100 is required, for IPv6 additionally option R&S CMW-KA150.
For configuration of the DAU, e.g. for initial configuration of the DAU IP settings, please
refer to the DAU documentation.
To set up an end to end packet data connection, proceed as follows:
1. Configure the IP settings of DAU according to the DAU documentation.
2. Configure the packet data parameters, see
chapter 2.4.11.6, "Packet Data"
3. Configure any other settings as desired (as for a connection without the DAU) and
switch on the cell signal.
4. Register / attach the UE.
5. Initiate a mobile originated packet data connection at the UE.
It is not possible to initiate a mobile terminated packet data connection at the
instrument.
When the packet data connection has been established, you can use the DAU to per-
form IP-based data tests (see DAU documentation).
You can also perform an "RLC Throughput" measurement, see
on page 80. Or you can perform other measurements
that do not require a DAU, e.g. HSDPA ACK, E-HICH or TX measurements. The BER
measurement can not be performed with a packet data connection.
Most measurements require the transmission of data. For a test mode connection the
signaling application takes care of downlink data transmission. For a packet data con-
nection the signaling application does not transfer data. So you must generate IP traffic
by other means, e.g. using the DAU. You may for example initiate an IPerf measure-
ment or an FTP data transfer. For details refer to the DAU documentation.
Some DAU measurements and applications require to enter the IP address(es)
assigned to the UE. You can retrieve this information from the UE info section, see
2.2.5 Audio Measurements
The "Audio Measurements" application provides an audio signal for audio tests and
can analyze the audio signal by means of audio measurement option. This allows for
example microphone- and speaker tests for a mobile phone.
In addition the audio board houses a speech codec board, that provides an interface to
the signaling units of the R&S
CMW. It decodes the signal delivered by a WCDMA sig-
General Description
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