User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
108
SPS Config
(Semi-persistent Scheduling Configuration)
Accesses the menu key to configure semi-persistent scheduling in the downlink.
Because voice calls (VoLTE) send short bursts of data at regular intervals, compared to bursty, infrequent
and bandwidth consuming data transmissions of web surfing, video streaming, and emails, it is more
efficient to define a transmission pattern which is known as semi-persistent scheduling. The following
parameters determine essential elements of defining this transmission pattern which significantly reduces
the scheduling assignment overhead.
Mode
BSE, FDD
Initial S/W Revision
6.4
Key Path Mode > BSE > Mode Setup > More > PHY Settings > DL Resource
Allocation > More
I_MCS
(Index Modulation Coding Scheme)
Sets the MCS Index used by the UE for downlink transmissions where a semi-persistent scheduling
allocation is being used.
This parameter is referenced as
MCS
I
in 3GPP 36.213, section 7.1.7.
The selected MCS Index determines the modulation order and transport block size used for the
transmission (see 3GPP 36.213 sections 7.1.7.1 and 7.1.7.2.1).
Mode
BSE, FDD
Range
0 – 28
Preset
7
Initial S/W Revision
6.4
Key Path Mode > BSE > Mode Setup > More > PHY Settings > DL Resource
Allocation > SPS Config