Last updated: September 4, 2009
The
ACK Channel Bit Fixed Mode Attribute (Fwd/Rev TAP)
parameter can be applied to differenct configurations of the test set:
ACK Channel Bit Fixed Mode Attribute
controls whether the AckChannelBitFixedMode attribute is included in the
FTAP Parameter Assignment Message
or not.
ACK Channel Bit Fixed Mode Attribute (Fwd TAP)
is only applicable under FTAP while
ACK Channel Bit Fixed Mode Attribute (Rev TAP)
is only applicable under RTAP.
ACK Channel Bit Fixed Mode Attribute
controls whether the AckChannelBitFixedMode attribute is included in the
FETAP Parameter Assignment Message
.
ACK Channel Bit Fixed Mode Attribute (Fwd TAP)
is only applicable under FETAP while
ACK Channel Bit Fixed Mode Attribute (Rev TAP)
is only applicable under RETAP.
If the
FETAP Parameter Assignment Message
is sent, the
ACK Channel Bit Fixed Mode Attribute
is also used to control whether the ACKChannelModulationTypeFixedMode attribute (see
ACK Channel Modulation Type
) is included in the
FETAP Parameter Assignment Message
.
ACK Channel Bit Fixed Mode Attribute
controls whether the AckChannelBitFixedMode attribute is included in the
FMCTAP Parameter Assignment Message
.
ACK Channel Bit Fixed Mode Attribute (Fwd TAP)
is only applicable under FMCTAP while
ACK Channel Bit Fixed Mode Attribute (Rev TAP)
is only applicable under RMCTAP.
If the
FMCTAP Parameter Assignment Message
is sent, the
ACK Channel Bit Fixed Mode Attribute
is also used to control whether the ACKChannelModulationTypeFixedMode attribute (see
ACK Channel Modulation Type
) is included in the
FMCTAP Parameter Assignment Message
.
Moreover, when the
ACK Channel Bit Fixed Mode Attribute
is set to:
In this mode, the ACKChannelBitFixedMode attribute is included in the FTAP Parameter Assignment Message , FETAP Parameter Assignment Message or FMCTAP Parameter Assignment Message sent to the AT. This means the access terminal must transmit the R-ACK channel in every slot and set the transmitted ACK Channel bit to the value specified by the ACKChannelBit field in the ACKChannelBitFixedMode attribute (ACKChannelBit field is fixed to 1 (Nak) by the test set. See Fixed Settings ).
In this mode, the ACKChannelBitFixedMode attribute is NOT sent in the FTAP Parameter Assignment Message, FETAP Parameter Assignment Message or FMCTAP Parameter Assignment Message . This means the access terminal acknowledges forward test packets addressed to it as in normal system operation. That is, the access terminal transmits a positive acknowledgment (Ack) on the R-ACK channel if it successfully receives a packet addressed to it on the Forward Traffic Channel. Otherwise, the access terminal transmits a negative acknowledgment (Nak) on the ACK channel. A Forward Traffic Channel physical layer packet is considered successfully received if it has a valid FCS (frame check sequence). The forward test packets addressed to the AT is controlled by the AT Directed Packets . If no forward test packet is addressed to it, the AT does not transmit the R-ACK.
In order for the R-ACK Channel to be active in all slots, you must set ACK Channel Bit Fixed Mode Attribute to on.
To force the AT not to transmit the R-ACK Channel in any slots, you must set the ACK Channel Bit Fixed Mode Attribute to off and AT Directed Packets to 0% so that the AT does not receive any forward test packets to acknowledge. (It is not necessary to set AT Directed Packets to 0% if Test Application Protocol is set to RTAP and Limited TAP is on. In this state, the test set does not transmit any forward test packets. See Transmit Forward Test Packets? .) The TROLPC measurement requires the AT not to transmit the R-ACK channel (see Time Response of Open Loop Power Control (TROLPC) Measurement Description ).
ACK Channel Bit Fixed Mode Attribute
can be changed at any time, and the test set will immediately send an
FTAP/FETAP/FMCTAP Parameter Assignment Message
to reflect the setting.
The test set ranges its receiver as if the R-ACK Channel is always present in every slot (even if no R-ACK channel is transmitting). See Expected Power .
The
ACK Channel Bit Fixed Mode Attribute
is displayed on the
Call Setup
screen in the
Application Configuration
window when the
Session Application Type
is set to
Test Application
in the Active Cell operating mode.
Manual Operation: How Do I Change Call Parameters?
C.S0029 Test Application Specification Description (TAP/ETAP/MCTAP)
Enhanced Test Application Protocol