HSDPA Information

UE Reported HS-DSCH Category

This result contains the UE HS-DSCH Physical Layer Category reported by the UE in the Physical Channel Capability IE in the RRC Connection Setup Complete message. If the UE did not report a category, then the result is 9.91E+37 (----).

GPIB command: CALL:HSDPa:MS:REPorted:HSDSchannel:CATegory?

Current UE HS-DSCH Category

This result contains the UE category currently in use by the test set. For examples of how the test set uses the Current UE HS-DSCH Category , see HSDPA Packet Switched Data and User Defined Configuration of the HS-DSCH .

If UE HS-DSCH Category Control is set to Auto and the category reported by the UE is valid (1-14, 17 or 18), the Current UE HS-DSCH Category is equal to the UE Reported HS-DSCH Category .

Otherwise, the Current UE HS-DSCH Category is equal to the Manual UE HS-DSCH Category setting.

The UE categories are defined in 3GPP TS 25.306 Table 5.1a.

GPIB command: CALL:STATus:MS:HSDSchannel:CATegory?

HSDPA Counters

The HSDPA Information window displays counters to help you monitor the HSDPA connection status. The results are continually updated until one of the following occurs:

• You press the MEASUREMENT RESET key ( SYSTem:MEASurement:RESet ).
• You select Clear UE Info ( CALL:MS:REPorted:CLEar[:ALL]<[:SELected]|:WCDMa> ).
• You change operating mode.
• You establish a new connection in active cell operating mode (or change the Channel Type from 12.2k RMC + HSDPA in FDD Test Operating Mode ).
• Blocks Transferred reaches 150,000.

When one of these events occurs, the counters reset to zero and then resume counting.

The HSDPA counters provide similar results to the HSDPA BLER measurement (see HSDPA Block Error Ratio Measurement Description ). However, note that because they are being calculated for a different set of blocks (the HSDPA counters are typically calculated over a much greater number of blocks), the results will often vary.

• Block Error Ratio

  This result reports the block error ratio of the HSDPA connection.

  3GPP TS 34.121 F.6.3.2 defines the HSDPA block error ratio as:

  

  GPIB command: CALL:HSDPa:MS:REPorted:HBLerror:RATio?

• Throughput

  This result reports the data throughput of the HSDPA connection. 3GPP TS 34.121 F.6.3.1 defines Information Bit Throughput R as "the sum (in kilobits) of the information bit payloads (excluding the 24-bit HS-DSCH CRC) successfully received during the test interval, divided by the duration of the test interval (in seconds)."

  Each time the test set receives an ACK from the UE, it increments a counter called "totalBits" by the size of the data block (in bits) that was positively acknowledged. Each time the test set does not transmit a block in a TTI it increments a counter called regDTX.

  Throughput (in kbps) is then calculated as follows:

  

  GPIB command: CALL:HSDPa:MS:REPorted:IBTHroughput?

• Blocks Transferred

  This result counts how many blocks have been transmitted to the UE. It is incremented by one every time a data block is transmitted on the HS-PDSCHs. A transmission of a new block of data or retransmission of an old block of data both count as a block transmission. When Blocks Transferred reaches 150,000, all of the HSDPA counters are reset.

  GPIB command: CALL:HSDPa:MS:REPorted:BLOCks?

• ACKs Received

  This result counts how many ACKs have been received on the uplink HS-DPCCH since the counters were reset.

  GPIB command: CALL:HSDPa:MS:REPorted:ACK?

• NACKs Received

  This result counts how many NACKs have been received on the uplink HS-DPCCH since the counters were reset.

  GPIB command: CALL:HSDPa:MS:REPorted:NACK?

• statDTXs Received

  This result counts how many statDTXs have been received on the uplink HS-DPCCH since the counters were reset.

  GPIB command: CALL:HSDPa:MS:REPorted:SDTX?

Current Test Mode Transport Block Size

The result contains the (MAC-hs) transport block size currently in use by the test set, which, as defined in 3GPP TS 25.321 s9.2.3.1 is affected by the User Defined Number of Active HS-PDSCHs , User Defined Transport Block Size Index , and User Defined Modulation Type settings.

GPIB command: CALL:STATus:HSDSchannel:TBSize?

Current PS Data Transport Block Size

The result contains the current (MAC-hs) transport block size currently in use by the test set, which, as defined in 3GPP TS 25.321 s9.2.3.1 is affected by the PS Data User Defined Active HS-PDSCHs , PS Data User Def Transport Block Size Index , and PS Data User Defined Modulation Type settings.

GPIB command: CALL:STATus:HSDSchannel:TBSize:PSData?

Last Signaled Measurement Power Offset

This return contains the most recent Measurement Power Offset (see Meas Pow Offset ) that was signaled to the UE during a call setup or a part of a Transport Channel Reconfiguration procedure.

GPIB command: CALL:STATus:MPOWer:OFFSet:SIGNaled?

Manual Operation

To access the HSDPA Information from the front panel, press the left More key until you reach the Call Control 2 of 5 menu, select Additional Screens ( F1 ), then HSPA Information ( F2 ). Some of the HSDPA Information results are also available on the main Call Setup Screen .

Related Topics

HSDPA Parameters

HSUPA Information and HSUPA Happy Bit Information