1. HSUPA (High Speed Uplink Packet Access)

State

Choice: On, Off
Default: On

This cell sets the HSUPA state to ON or OFF.

ON

Turns on the E-DPDCH an E-DPCCH channels.

OFF

Turns off the E-DPDCH and E-DPCCH channels.

TTI

Choice: 2, 10
Default: 10

This cell sets the TTI (transmission time interval) to 2 ms or 10 ms. The TTI is the distance, measured in subframes, from the beginning of one HSUPA transmission to the beginning of the next.

Hybrid ARQ Process State

Choice: ON (TX ALL), OFF (DTX ALL), USER
Default: ON

When you click this cell, a drop-down arrow provides access to a menu where you can set the state of HARQ processes to ON (TX ALL ), USER, or OFF (DTX ALL). Clicking USER displays a Data Type Entry window where you can configure  8 processes. If the selected TTI is 10 ms, only the first four processes states are used.

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HARQ Mode

Choice: NONE, IR, CC
Default: NONE

This cell selects the retransmission scheme for the HARQ process.

NONE

This choice selects no feedback control. RSN and RV can be manually set to 0, 1, 2, or 3.

IR
(Incremental Redundancy)

This choice provides UE feedback by sending different coded bits instead of the same coded packets, when a NACK is received. It combines additional parity bits from the retransmission with bits of the first transmission, which gives better throughput performance since coding is effectively done across retransmissions. This selection provides the following capabilities:

  • configure a simulated ACK/NACK response in the HARQ ACK/NACK pattern Data Type Entry window

     

  • set the maximum number of HARQ transmissions

  • control the RSN by the ACK/NACK pattern; control the RV by the actual RSN value

CC
(Chase Combining)

 

This choice provides UE feedback by sending the same coded packet again upon reception of a NACK signal. In practice, the incorrectly received coded data blocks are often stored at the receiver rather than discarded, and when the transmitted coded data block is received, the information from both coded data blocks are combined before being fed to the decoder of the error-correction code, which can increase the probability of successful decoding. In general, since the same data is repeated, the signal gain increases; however, the signal-to- noise ratio also increases. This selection provides the following capabilities:

  • configure a simulated ACK/NACK response in the HARQ ACK/NACK pattern Data Type  Entry window

     

  • set the maximum number of HARQ transmissions

  • control the RSN by the ACK/NACK pattern; RV is always 0.

Retransmission Sequence Number

Range: 0-3 for HARQ Mode: NONE; Disabled for IR and CC
Default: 0

The state of the retransmission sequence number cell depends on the HARQ Mode setting.

NONE

Can be set to 0, 1, 2, or 3.

HARQ IR

The cell is grayed out. RSN is automatically controlled by ACK/NACK signal.

HARQ CC

The cell is grayed out. RSN is automatically controlled by ACK/NACK signal.

 RV Index

Range: 0-3 for HARQ Mode: NONE; Disabled for IR and CC
Default: 0

The state of the redundancy version (RV) Index cell depends on the selected HARQ Mode.

NONE

Can be set to 0, 1, 2, or 3.

HARQ IR

The cell is disabled. RV is dynamically controlled by RSN.

HARQ CC

The cell is disabled. RV is always 0.

Maximum Number of Retransmissions

Range: 0-15 for HARQ Mode: IR and CC; Disabled for NONE
Default: 0

This cell is only active when HARQ IR or HARQ CC is selected as the HARQ Mode.

Use this cell's parameter for UE performance testing or for specifying an arbitrary number (0 to 15) of HARQ retransmissions. When the software encounters a UE NACK response that is set by the HARQ ACK/NACK Pattern cell, the software resends the coded packet payload until either the maximum number of HARQ retransmissions is reached or a simulated ACK response is encountered.

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HARQ ACK/NACK Pattern

Choice: ACK ALL, USER, EXTERNAL for HARQ Mode: IR and CC; Disabled for NONE
Default: ACK ALL

This cell is only active when HARQ IR or HARQ CC is selected as the HARQ Mode.

When you click the cell, a drop-down arrow provides access to the Data Type Entry window where you can configure the ACK/NACK pattern using an all ACK, user-defined, or external triggering pattern. This pattern defines the HSUPA simulated UE ACK/NACK pattern that determines the HARQ response. The user file has the following properties:

 

TFC E-TFCI Pattern

Choice: MAIN ALL, USER, EXTERNAL
Default: MAIN ALL

When you click this cell, a drop-down arrow provides access to the Data Type Entry window where you can designate main or alternate parameters settings for each (sub)frame. Select all main parameters (MAIN ALL), use a user-defined file, or input an external signal pattern to assign either the main or alternate parameter settings for E-TFC table, E-TFC index, E-DPDCH power, SF and number of E-DPDCH, and E-DCH data selections. For example, the value entered in E-TFCI Table Selection would be used when MAIN is selected, and the value entered in E-TFCI Table (Alternate) when ALT is selected. The user file has the following properties:

E-TFCI Table Selection

Choice: 0, 1
Default: 1

This cell selects Table 0 or Table 1 as shown in Appendix B (B.1, B.2, B.3, or B.4) in standard TS 25.321. Each table lists E-FTC index values (selected in the E-TFC index cell) which set the transport block size (bits) for the E-DCH.

B.4 10ms TTI E-DCH Transport Block Size Table 1

B.3 10ms TTI E-DCH Transport Block Size Table 0

B.2 2ms TTI E-DCH Transport Block Size Table 1

B.1 2ms TTI E-DCH Transport Block Size Table 0

Table

TTI

E-TFC Index

0 (B.1)

2 ms

0 to 127

1 (B.2)

2 ms

0 to 125

0 (B.3)

10 ms

0 to 127

1 (B.4)

10 ms

0 to 120

 

E-TFCI Table Selection (Alternate)

Choice: 0, 1
Default: 1

This cell selects Table 0 or Table 1 as shown in Appendix B (B.1, B.2, B.3, or B.4) in standard TS 25.321 to use when ALT (alternate parameter settings) is selected in the E-TFCI Pattern Data Type Entry window. It is grayed out if the data entry type is MAIN ALL (no alternate parameter settings) is selected as the data type.

B.4 10ms TTI E-DCH Transport Block Size Table 1

B.3 10ms TTI E-DCH Transport Block Size Table 0

B.2 2ms TTI E-DCH Transport Block Size Table 1

B.1 2ms TTI E-DCH Transport Block Size Table 0

E-TFC Index

Choice: 0–127 for TTI = 2ms , TB = 0; 0–125 for TTI = 2ms , TB = 1; 0–127 for TTI = 10ms , TB = 0; 0–120 for TTI = 10ms , TB = 1
Default: 41

This cell sets the index number and corresponding transport block size as shown in Table 0 or Table 1, in standard TS 25.321, Appendix B (B.1, B.2, B.3, or B.4). The range depends on the selected TTI and E-TFC Table.

B.4 10ms TTI E-DCH Transport Block Size Table 1

B.3 10ms TTI E-DCH Transport Block Size Table 0

B.2 2ms TTI E-DCH Transport Block Size Table 1

B.1 2ms TTI E-DCH Transport Block Size Table 0

E-TFC Index (Alternate)

Choice: 0–127 for TTI = 2ms , TB = 0; 0–125 for TTI , TB = 1; 0–127 for TTI = 10ms , TB = 0; 0–120 for TTI = 10ms , TB = 1
Default: 41

This cell sets the index number and corresponding transport block size as shown in Table 0 or Table 1, in standard TS 25.321, Appendix B (B.1, B.2, B.3, or B.4) to use when ALT (alternate parameter settings) is selected in the E-TFCI Pattern Data Type Entry window. It is grayed out if MAIN ALL (no alternate parameter settings) is selected as the data type.

B.4 10ms TTI E-DCH Transport Block Size Table 1

B.3 10ms TTI E-DCH Transport Block Size Table 0

B.2 2ms TTI E-DCH Transport Block Size Table 1

B.1 2ms TTI E-DCH Transport Block Size Table 0

Happy Bit

Choice: HAPPY, NOT HAPPY, USER
Default: HAPPY

This cell sets the happy bit to HAPPY or NOT HAPPY for up to 18000 frames. Selecting USER displays a Data Type Entry window where you can set each bit to indicate whether or not the UE is satisfied (happy) with the current Serving Grant based on available data rate, power, and capacity. This cell is enabled when the E-DPDCH data type is E-DCH. This bit is always present during the uplink transmission of the E-DPCCH. The user file has the following properties:

Number of HARQ Process

This cell cannot be edited. It displays the number of HARQ processes depending on the round trip time for the selected TTI: 8 processes (HARQ RTT = 8) for the 2 ms TTI or 4 processes (HARQ RTT = 4) for 10 ms TTI.

E-DCH Data Block Size

This cell cannot be edited. It displays the block size (also known in the standards as Information Bit Payload (NINF)) for the E-DCH. The number of data bits per E-DCH cannot exceed 200,000. To maintain this data bit limit, the software multiplies the block size by the number of blocks. If the product of these two parameters exceeds 200,000, the apply function will not work.

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