Chapter 16 517
W-CDMA Uplink Digital Modulation for Receiver Test
Compressed Mode Single Transmission Gap Pattern Sequence (TGPS) Overview
Compressed Mode Single Transmission Gap Pattern Sequence (TGPS)
Overview
The compressed mode is very flexible with many adjustable parameters. You can have one or two
transmission gaps. When two gaps are used, each gap can have a different length and operate using the
single or double frame method. Table 16-3 describes some of the parameters that are available for the
compressed mode. The compressed mode frames are fully coded which enables you to perform BER and
BLER testing of the receiver.
The ESG also supports multiple transmission gap pattern sequences (one to six). This enables you to set up
multiple pattern sequences. For more information, see “Compressed Mode Multiple Transmission Gap
Pattern Sequence (TGPS) Overview” on page 528.
Table 16-3 Uplink Compressed Mode Parameters
Name Definition
Transmission gap pattern repetition count (TGPRC) Number of transmission gap patterns within the
transmission gap pattern sequence.
Transmission gap connection frame number (TGCFN) CFN of the first compressed frame of the first
pattern within the transmission gap pattern
sequence.
Transmission gap slot number
(TGSN)
Slot number of the first transmission gap within
the first radio frame of the transmission gap
pattern.
Transmission gap length 1
(TGL1)
Duration of the first transmission gap within the
transmission gap pattern.
Transmission gap length 2
(TGL2)
Duration of the second transmission gap.
Transmission gap duration
(TGD)
This is the distance, measured in slots, from the
beginning of the first transmission gap to the
beginning of the second transmission gap.
Transmission gap pattern length 1
(TGPL1)
Duration of first transmission gap pattern that
includes TGL1/2.
Transmission gap pattern length 2
(TGPL2)
Duration of the second transmission gap pattern
that includes TGL1/2.
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