User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
90
UL Resource Allocation
Accesses the Uplink Resource Allocation parameters available for you to configure.
Resource Allocation Mode Auto/Fixed MAC Padding
I_MCS
RB Size
RB Start
Ignore PRACHs
Aggregation Level
RCT
Key Path: Mode > BSE > Mode Setup > More > PHY Settings
Resource Allocation Mode Auto/Fixed MAC Padding
Auto: This is a dynamic mode of operation where the values of RB Size, RB Start, and I_MCS are selected
by the settings used on the instrument. UL PUSCH allocations are assigned based on the UE sending
Scheduling Request messages. The UE transmits these when higher protocol layers (for example: IP or
RRC) have data that they want to send.
Fixed MAC Padding: This is a fixed mode of operation in which the UE is asked to transmit on the PUSCH
every subframe, regardless of any Scheduling Request messages it may choose to send. If the UE has
nothing useful to send (as in “real data”) it sends padding data which is discarded at the MAC layer. It is a
useful mode of operation when performing transmitter testing.
Mode
BSE
Range
Auto | Fixed MAC Padding
Preset
Acell / Bcell = Auto
Initial S/W Revision
6.1
Key Path Mode > BSE > Mode Setup > More > PHY Settings > UL Resource
Allocation
I_MCS
Sets the MCS Index used by the UE for uplink transmissions.
This parameter is referenced as
MCS
I
in 3GPP 36.213, section 8.6.
The selected MCS Index determines the modulation order and transport block size used for the
transmission (see 3GPP 36.213 sections 8.6.1 and 7.1.7.2.1).
Only MCS Indices that map onto a modulation order of 2 or 4 (QPSK or 16 QAM)
are supported.