User`s guide

Agilent PXT Wireless Communications Test Set

User’s Guide

TB1 and TB2 (ACK/NACK/StatDTX):

TB1 and TB2 represent codewords 1 and 2 – there will be no feedback on a second codeword unless the DL

transmission mode is either mode 3 or 4.

ACK & NACK represent the number of transport blocks that have been positively or negatively acknowledged as

having been received by the UE. A StatDTx is a transport block that the PXT expects the UE to ACK or NACK, but for

which it receives neither. The concept of StatDTX exists for DL throughput but not for UL throughput.

PHR represents the value of the latest Power Headroom Report received by the PXT from the UE. This information is

also displayed on the L1/L2 Status screen.

[BLER & Throughput]

Displays the ratios defined as stated on screen.

Throughput (TB1/TB2)(Mbps)

This value represents the instantaneous DL throughput as measured over the last 100 ms.

[DL Throughput]

Displays maximum and average throughput as stated on screen.

UL BLER/Throughput

[DL Feedback Information]

Displays the feedback sent on the Downlink to the UE regarding the UL transmission.

Note: This information is grayed out for TDD.

TB1/TB2 (ACK/NACK)

This represents the number of UL transport blocks transmitted by the UE that have either been acknowledged or

negatively acknowledged (ACKed or NACKed).

[BLER & Throughput]

BLER (TB1/TB2)(%)

Represents the Block Error Ratio of the UL connection (Number of ACKs divided by Number of ACKs plus Number of

NACks). ACKs or NACKs will be sent on the PHICH to the UE. Only TB1 (representing the first codeword) is

supported at this time for UL transmissions.

Throughput (TB1/TB2)(Mbps)

This value represents the instantaneous UL throughput as measured over the last 100 ms.

[UL Throughput]

Maximum Throughput(Mbps)

This represents the maximum throughput observed on the UL since the last time the Clear button was pressed.

Average Throughput(Mbps)

This value represents the average throughput observed on the UL since the last time the Clear button was pressed.

Key Path: Mode > BSE > Meas