Last updated: January 18, 2010
This section is only applicable to EGPRS. This section assumes that you have the most recent hardware and software revisions in your test set. For details on what configurations your test set supports, see:
http://www.home.keysight.com/upload/cmc_upload/All/ms12table30905.html
Please review the hardware requirement information at
http://www.keysight.com/find/8960upgrades
to determine if a hardware upgrade is required for your testing needs.
This section details the test set's operation for the following:
By default, the test set does not make available multislot configurations or modulation coding schemes that it does not support for combinations of the following parameters: Operating Mode, Connection Type, Multislot Configuration, and Modulation Coding Scheme (MCS).
Unsupported data rate configurations can be enabled using the CALL:DATA:RATE:CONFig command (see CALL:DATA:RATE:CONFig[:EGPRs] ) or from the test set's front panel (see How Do I Gain Access to All the EGPRS Multislot Configurations? ). The value of this parameter can be set to either Supported or All.
The supported EGPRS Data Rate Configurations depend on the actual hardware configuration of the test set. By default the multislot configuration and modulation coding scheme settings are restricted to prevent the selection of configurations that would overload the protocol processor.
When setting to ALL, The EGPRS Data Rate Configuration setting allows this restriction to be overrided and enables access to all multislot configuration and modulation coding scheme settings, regardless of whether they are likely to function successfully. See All Configurations .
When the EGPRS Data Rate Configuration is set to
Supported
, the unsupported data configurations are grayed out on the MUI to prevent selection. Attempting to set the test set to an unsupported downlink multislot configuration or modulation coding scheme generates the following warning messages
GPRS/EGPRS functionality restriction; Requested multislot configuration not supported
.
GPRS/EGPRS functionality restriction; Requested modulation coding scheme not supported.
If you change the Connection Type to an option that makes the current multislot configuration and modulation coding scheme combination unsupported, the multislot configuration is reset to the default value of 2x1. For example, if the multislot configuration is 1x2 and the modulation coding scheme setting is MCS-5, changing the connection type from ETSI Type A to BLER causes the multislot configuration to return to the default value of 2x1.
To gain access to the multislot configurations and modulation coding schemes not indicated as supported, you must set the EGPRS Data Rate Configurations parameter value to All.
When you change the
EGPRS Data Rate Configurations
parameter value to
All
, the following warning message appears on the front panel screen:
Warning: Not all EGPRS data rate configurations are supported
.
Remember that although you now have access to all EGPRS data rate configurations, the performance of those not supported by the test set is not guaranteed. You can try to minimize the protocol processor loading to gain better performance.
The protocol processor loading is determined by many factors but the most relevant ones are:
While the test set may not currently guarantee support for all EGPRS data rate configurations, some unsupported configurations can still be used to verify your mobile station's capabilities if you need to perform a quick verification rather than intensive testing. When using unsupported configurations the following considerations apply:
Additionally, you should perform activities such as receiver measurements and protocol logging one at a time. For example, turn off logging while performing a receiver measurement and turn off receiver measurements while using protocol logging. Unidirectional transfers such as uplink FTP or downlink FTP are also a good way to minimize loading in the downlink or uplink, respectively.
How Do I Gain Access to All the EGPRS Multislot Configurations?
Gain Access to All EGPRS Data Rate Configurations