WCDMA Signaling
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
79
User Manual 1173.9657.02 ─ 11
●
Average
: Average of all "Current" values over all carriers referenced to the last
window size.
Throughput
●
Current
: Data throughput on L1 level per carrier; number of E-DPDCH data bits
(without CRC bits) that the R&S
CMW could receive correctly per time unit.
Transmissions with failed CRC check do not contribute to the current throughput.
The R&S
CMW calculates the current throughput from the number of packets
received per time unit multiplied with the number of user data bits per packet,
depending on the E-TFCI values received on the E-DPDCH.
●
Average
: Average of all "Current" values per carrier referenced to the last window
size.
●
Minimum, Maximum:
Largest or smallest "Current" value that the R&S
CMW
obtained since the start of the measurement.
●
Max.Possible
: "Current" throughput that would be reached within meassured E-
TFCI if no CRC errors occured.
●
Expected Max.
: Maximum throughput reachable if the UE sends at the maximum
data rate (depends on the current settings) and no CRC errors occur. This value is
a theoretical limit of the coding and is greater or equal to the measured "Max.Pos-
sible" throughput.
Measured Frames
Total number of already measured transmission packets (subframes).
In single shot mode both the number of already measured subframes and the number
of subframes to be measured are displayed.
E-HICH Reception
These results are based on the evaluation of the RSN field of the E-DPCCH and show
the following values:
●
False
: Number of transmissions that the UE received incorrectly.
Two classes of events contribute to the false E-HICH reception:
–
The R&S
CMW sends an ACK but the UE retransmits data (the "missed ACK"
events from the conformance test specification).
–
The R&S
CMW sends an NACK or DTX but the UE sends new data, although
the maximum number of retransmissions is not yet reached (the "false ACK"
events from the conformance test specification).
●
Correct
: Number of transmissions that the UE received correctly.
●
All Valid
: The sum of the previous two numbers.
The first new data block after a complete retransmission cycle is not counted as a
test sample. Therefore, the number of valid E-HICH receptions is possibly lower
than the total number of "Measured Frames".
Example: With an all NACK pattern transmitted to the UE and a maximum number
of 7 retransmissions (8 transmissions in total), the ratio <All Valid E-HICH Recep-
tions> to <Measured Subframes> is approximately 7/8.
●
False Ratio
: Ratio of "False" to "All Valid".
CRC
The CRC results are based on a CRC analysis of the E-DPDCH re-transmitted by the
UE.
General Description
深圳德标仪器
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