This section is only applicable to the lab application and to a test application with the required feature license.
The Enhanced Traffic Parameters menu provides access to the configurable attributes for the Enhanced Forward Traffic Channel MAC and Subtype 3 Reverse Traffic Channel MAC protocols that are used with the subtype 2 physical layer protocol. To determine when the test set supports these protocols, see Current Physical Layer Subtype and Associated Protocols .
The Auxiliary Pilot channel (R-Aux Pilot) is transmitted by the AT when operating at high data rate to aid AN for reverse signal demodulation. When the test set is in the Active Cell operating mode with
Release A Physical Layer Subtype
set to Subtype 2, the
Auxiliary Pilot Channel Min Payload
specifies the minimum R-Data payload size (roughly corresponding to the data rate) at which point the AT is required to transmit the R-Aux Pilot channel. That is, when the AT is transmitting at a data rate (determined by
R-Data Pkt Size
) no less than the
Auxiliary Pilot Channel Min Payload
, the AT is expected to transmit the R-Aux Pilot channel.
The
Auxiliary Pilot Channel Min Payload
is a "Configurable Attribute" that is used to set part of the AuxiliaryPilotChannelParameters attribute for the Subtype 3 Reverse Traffic Channel MAC Protocol. It is negotiated with the AT during session negotiation. When a session is open, changing the
Auxiliary Pilot Channel Min Payload
results in a session re-negotiation. See
Session Negotiate State
for details.
If the R-Aux Pilot channel is transmitted, the Auxiliary Pilot Channel Gain is used to control the power of the R-Aux Pilot Channel.
DSC Length
determines the length of a single DSC transmission (in units of 8 slots). It is a "Configurable Attribute" that is used to set DSCLength attribute for the Enhanced Forward Traffic Channel MAC protocol. It is negotiated with the AT during session negotiation. When a session is open, changing the
DSC Length
results in a session re-negotiation. See
Session Negotiate State
for details.
The R-DSC channel is expected to be transmitted from the AT when
Release A Physical Layer Subtype
is set to subtype 2. The R-DSC channel is used by the AT to indicate to the AN the selected serving cell on the Forward Channel. The serving cell is indicated by the DSC value for that cell. The DSC value takes effect one slot after the end of its transmission and stays in effect for
DSC Length
slots. When the DSC channel is transmitted, its power is controlled by the
DSC Channel Gain
.
Short Packet Enabled Threshold
determines the threshold that allows for use of the non-canonical transmission formats for the forward traffic channel (for subtype 2 physical layer) per the DRC value requested by the AT. It is applicable when the test set is in the Active Cell operating mode with
Protocol Rel
set to A (1xEV-DO-A) and the
Release A Physical Layer Subtype
set to Subtype 2.
Short Packet Enabled Threshold
value, the non-canonical (short packet) formats for the DRC value can be used. For details on the canonical and non-canonical forward transmission formats for a DRC value, see
DRC Value and Forward Transmission Formats
.If any of the following conditions happen, an error message "Digital856 call processing settings deferred: Short Packets Enabled Threshold incompatible with forward traffic configuration" is posted. When the error is present, the test set uses the canonical transmission format for the received DRC value regardless of the user settings ( F-Traffic Config or F-Traffic Format ).
Short Packet Enabled Threshold
is set to less than 4096 bits when the
Session Application Type
is
Test Application
,
DRC Value Fixed Mode Attribute
is Off and
F-Traffic Config
is not Canonical.
Test Application
and
F-Traffic Format
is set to a non-canonical value where the associated DRC value's canonical packet size is equal to or more than the
Short Packet Enabled Threshold
.
Short Packet Enabled Threshold
is a "Configurable Attribute" for the Enhanced Forward Traffic Channel MAC protocol. It is negotiated with AT via the ShortPacketsEnabledThresh attribute during session negotiation. When a session is open, changing this setting results in a session re-negotiation. See
Session Negotiate State
for details.
Short Packet Enabled Threshold
to 4096 bits. This allows for all non-canonical (short packet) formats. It is not expected to be changed unless some ATs failed to open a session with this value. The default value set in the test set is not the protocol default value (2048 bits) as defined in the C.S0024-A. This opens the possibility of session failure for some ATs that only support the protocol default value. In this case, you may need to change the
Short Packet Enabled Threshold
to the value supported by your AT.GPIB Command:
Manual Operation: How Do I Change Channel Gain/Traffic Info Parameters? (Enhanced Traffic Parameters menu)