HSDPA PS Data Setup

HSDPA PS Data Parameters

• PS Data DC-HSDPA State

  This parameter controls whether to set up a DC-HSDPA PS Data call. DC-HSDPA operation requires:

  • The serving cell and the secondary serving cell are in the same frequency band;
  • The total number of HS-SCCHs configured for both the cells be 6 or less;
  • PS Data HS-DSCH MAC entity is set to Mac-ehs ;
  • The Number of HARQ Processes shall be more than 6 when PS Data UE IR Buffer Allocation is set to Implicit . when PS Data UE IR Buffer Allocation is set to Explicit , the number of HARQ processes can be 1 through 8, but the memory size for each HARQ process can not be greater than the number of soft channel bits for an implicit memory partitioning with 6 processes per HS-DSCH channel (3GPP TS 25.331 s8.6.5.6b).
  • The current UE HS-DSCH Category is between 21 to 24.

  This parameter can only be changed when Call Status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:DCHSdpa[:STATe]

• PS Data HS-DSCH MAC-d PDU Size Control

  This setting determines whether PS Data HS-DSCH MAC-d PDU Size or PS Data HS-DSCH MAC-d PDU Size Manual is to be used on HS-DSCH channel.

  GPIB command: CALL:HSDPa:SERVice:PSData:MACD:PDUSize:CONTrol

• PS Data HS-DSCH MAC-d PDU Size

  This parameter specifies the size of the MAC-d PDU that is used on the DTCH that is mapped to the HS-DSCH for an HSDPA PS data connection. The DTCH is the logical channel that carries the downlink user traffic data (for example, IP datagrams).

  Some UEs require a 656 bit MAC-d PDU size to achieve maximum data throughput (because sending fewer blocks reduces the load on the UE's CPU). 3GPP TS 34.108 s6.10.2.4.5.1 lists 656 bits as an alternate MAC-d PDU size. PS Data HS-DSCH MAC-d PDU Size cannot be changed to 656 bits if PS Data HS-DSCH Configuration Type is set to 7 or less (because doing so would cause the MAC-d PDU to be too large for the MAC-hs block).

  This parameter can only be changed when connection status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:MACD:PDUSize

• PS Data HS-DSCH MAC-d PDU Size Manual

  When PS Data HS-DSCH MAC-d PDU Size Control is set to Manual , this setting determines the size of the MAC-d PDU that is used on the DTCH that is mapped to the HS-DSCH for a HSDPA PS data connection.

  GPIB command: CALL:HSDPa:SERVice:PSData:MACD:PDUSize:MANual

• PS Data Number of HARQ Processes

  Sets the control state and value for the number of active HARQ processes.

  The control state can be set to Auto or Manual mode. When the control state is set to Auto, the number of HARQ processes active in the MAC-hs layer is set such that the fewest number of HARQ processes are used that will still result in maximum throughput based on the Current UE HS-DSCH Category. These values for the AUTO control state are as follows.

  UE Category	Number of HARQ Processes (if the control state is AUTO)
  1	2
  2	2
  3	3
  4	3
  5	6
  6	6
  7	6
  8	6
  9	6
  10	6
  11	3
  12	6
  13	6
  14	6
  15	12
  16	12
  17	6
  18	6
  21	6
  22	6
  23	6
  24	6

  When the control state is set to a value (manual mode), the test set uses this value for the number of HARQ processes active in the MAC-hs layer.

  See PS Data DC-HSDPA State on restrictions with DC-HSDPA operation.

  This setting can only be changed when the call status is idle.

  GPIB command:
  Control State: CALL:HSDPa:SERVice:PSData:HARQ:PROCess:COUNt:CONTrol:AUTO
  Manual Setting: CALL:HSDPa:SERVice:PSData:HARQ:PROCess:COUNt:MANual

• PS Data Manual Num of HARQ Processes for MIMO

  This parameter controls the number of active HARQ processes in the MAC_ehs layer when PS Data HS-DSCH MAC Entity is set to MAC_ehs and PS Data HSDPA MIMO State is set to On .

  This setting can only be changed when Call Status is Idle .

  GPIB command: CALL:HSDPa:SERVice:PSData:MIMO:HARQ:PROCess:COUNt:MANuall

• PS Data UE IR Buffer Allocation

  Controls how the IR buffer size for each active HARQ process is determined.

  When PS Data UE IR Buffer Allocation is set to Implicit , the total IR buffer size for the Current UE HS-DSCH Category ("total number of soft channel bits" in 3GPP TS 25.306 Table 5.1a) is divided equally among the active HARQ processes. For DC-HSDPA, the soft memory buffer is initially equally partitioned among the HS-DSCH transport channels and then equally partitioned among the HARQ processes per HS-DSCH transport channel. Using this setting helps ensure that the HSDPA connection will be successfully established, as the IR buffer size used by the test set is automatically set to match the current UE category. However, to configure the size of the IR buffer allocated to each HARQ process in the user defined downlink, you may need to set PS Data UE IR Buffer Allocation to Explicit , and then set PS Data Explicit UE IR Buffer Size accordingly.

  When PS Data UE IR Buffer Allocation is set to Explicit , the IR buffer size allocated to each active HARQ process is determined directly by the PS Data Explicit UE IR Buffer Size setting. This setting allows you to allocate less than your UE's maximum total IR buffer size. Note that if you set the PS Data Explicit UE IR Buffer Size beyond your UE's capability (based on the number of HARQ processes), the HSDPA connection attempt will fail.

  See PS Data DC-HSDPA State on restrictions with DC-HSDPA operation.

  This setting can only be changed when call status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:MS:IREDundancy:BUFFer:ALLocation

• PS Data Explicit UE IR Buffer Size

  When PS Data UE IR Buffer Allocation is set to Explicit , this setting determines the size of the IR buffer allocated to each HARQ process. The total IR buffer size is thus determined by multiplying the PS Data Explicit UE IR Buffer Size by the PS Data Number of HARQ Processes .

  Note, different UE categories support different total IR buffer sizes ("total number of soft channel bits" in 3GPP TS 25.306 Table 5.1a). If you set the total IR buffer size beyond the specified limit for the Current UE HS-DSCH Category , the test set will post a warning, but will still allocate the total IR buffer size you've set. This will cause the HSDPA connection attempt to fail. The limits for the IR buffer size based on the UE category are listed in the table below. UE Categories 21,22,23 and 24 support DC-HSDPA.

  UE Category	IR Buffer Size Limit
  1	19200
  2	28800
  3	28800
  4	38400
  5	57600
  6	67200
  7	115200
  8	134400
  9	172800
  10	172800
  11	14400
  12	28800
  13	259200
  14	259200
  17	259200
  18	259200
  21	345600
  22	345600
  23	518400
  24	518400

  The range for this setting is 800-16000 by step of 800, 17600-32000 by step of 1600, 36000-80000 by step of 4000, 88000-160000 by step of 8000, and 176000-304000 by step of 16000, as per 3GPP TS 25.331 s10.3.5.7a.

  See PS Data DC-HSDPA State on restrictions with DC-HSDPA operation.

  This setting can only be changed when call status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:MS:IREDundancy:BUFFer:SIZE[:EXPLicit]

• PS Data HS-DSCH MAC entity

  If PS Data DC-HSDPA State is set to On , you can not set this parameter to MAC-hs because DC-HSDPA must be configured with MAC-ehs.

  This setting can only be changed when call status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:HSDSchannel:MAC

• Downlink AM RLC Mode

  GPIB command: CALL:HSDPa:SERVice:PSData:RLC:DOWNlink:MODE

• DL Flexible RLC Header Extension Special Value

  GPIB command: CALL:HSDPa:SERVice:PSData:RLC:DOWNlink:HEXTension:SVALue

• DL Max PDU Payload Size

  This setting is only available when the PS Data HS-DSCH MAC entity is set to MAC-ehs and the Downlink AM RLC Mode is Flexible .

  This setting determines the downlink maximum flexible AM RLC PDU payload size. If the AM RLC SDU size is greater than the DL Max PDU Payload Size , it is segmented to multiple RLC PDUs so that the payload in each PDU is equal to or less than the DL Max PDU Payload Size . The payload size in those PDUs which are not the last one is set to DL Max PDU Payload Size , and the remaining segment will be put into the last RLC PDU.

  This setting can only be changed when call status is idle.

  GPIB command: CALL:HSDPa:SERVice:PSData:RLC:DOWNlink:MAXimum:PDU:PSIZe

Serving Cell Parameters

• PS Data HSDPA MIMO State

  This parameter controls whether to set up a MIMO PS Data HSDPA/HSPA call. This operation requires:

  • The test set is installed with the 8.0 hardware or above;
  • PS Data HS-DSCH MAC entity is set to Mac-ehs ;
  • The PS Data DC-HSDPA State is set to Off ;
  • The current UE HS-DSCH Category is between 15 to 20.

  This setting can only be changed when Call/Data Status is Idle .

  GPIB command: CALL:HSDPa:SERVice:PSData:MIMO[:STATe]

• PS Data HS-DSCH Configuration Type

  This parameter controls how the HS-DSCH is configured. There are three settings:

  • CQI Value

    This setting uses the value assigned to CQI Value (separate parameter) along with the Current UE HS-DSCH Category to automatically configure the HS-DSCH based on tables defined in 3GPP TS 25.214. In order for the test set to accept this setting, the MAC-hs block size must be large enough to carry at least a single MAC-d PDU.

    When Current MIMO Configuration Status is Active , the primary precoding weight will be static and is determined by the PS Data Primary Precoding Weight, and the number of scheduled transport blocks will be static and is determined by the PS Data Primary Precoding Weight and HS-DSCH CQI Value for MIMO.

  • Reported CQI

    This setting is similar to the CQI Value setting except that the test set uses the UE reported CQI values received on the HS-DPCCH channel rather than the assigned CQI Value .

    The test set continually adjusts the HS-DSCH configuration to match the CQI table in 3GPP TS 25.214 that corresponds to the Current UE HS-DSCH Category. If the test set has not yet received a CQI report from the UE, it uses a CQI value of 8 to configure the HS-DSCH each time a call is connected. Note: The test set cannot receive CQI reports if the CQI Feedback Cycle (k) is set to zero.

    The test set ensures that the MAC-hs block size is large enough to contain at least one MAC-d PDU. Therefore, the smallest CQI value the test set uses for a 336 bit MAC-d PDUs is 5 and the smallest CQI value the test set uses for 656 bit MAC-d PDUs is 8 regardless of whether the UE reports smaller CQI values.

    When Current MIMO Configuration Status is Active , the test set contunually adjusts the number of DL transport blocks as per the UE-preferred number of transport blocks from the reported CQI value. If one tranport block is preferred by the UE, the test set continually adjusts the number of DL HS-PDSCHs as per the reported CQI value that corresponds to the Current UE HS-DSCH Category. If two tranport blocks are preferred by the UE, the UE always asks for 15 HS-PDSCHs in the downlink.

    When Current MIMO Configuration Status is Active , the test set contunually adjusts the DL primary precoding weight as per the UE-preferred primary precoding weight from the reported PCI value.

  • User Defined

    When this setting is selected, the test set applies the user defined PS data parameters ( PS Data User Defined Active HS-PDSCHs , PS Data User Def Transport Block Size Index , and PS Data User Defined Modulation Type ) rather than automatically configuring them as is done when the PS Data Configuration Type is set to CQI Value or Reported CQI . In order for the test set to accept this setting, the MAC-hs block size must be large enough to carry at least a single MAC-d PDU

    When Current MIMO Configuration Status is Active , the primary precoding weight will be static and is determined by the PS Data Primary Precoding Weight, and the number of scheduled transport blocks will be static and is determined by the PS Data Primary Precoding Weight and HS-DSCH CQI Value for MIMO.

  GPIB command: CALL:HSDPa:SERVice:PSData:HSDSchannel:CONFig[:TYPE]

• CQI Value

  This parameter is only applicable when the PS Data HS-DSCH Configuration Type is set to CQI Value . The test set supports an HSDPA packet data connection as defined by 3GPP TS 34.108 6.10.2.4.5.1 (see GPRS Radio Access Bearer ). You must specify some aspects of the channel configuration by specifying a CQI Value .

  Based on the CQI Value setting and the Current UE HS-DSCH Category , the test set sets the MAC-hs transport block size, number of HS-PDSCHs, modulation type and IR buffer size (N _IR ) to the values in 3GPP TS 25.214 s6A.2 Tables 7A-E. The test set uses the Current UE HS-DSCH Category to set the inter-TTI interval, number of HARQ processes, and IR buffer size (N _IR ) as described in GPRS Radio Access Bearer .

  CQI Value cannot be set to 7 or less if PS Data HS-DSCH MAC-d PDU Size is set to 656 bits (because doing so would cause the MAC-hs transport block size to be too small to carry even a single MAC-d PDU). The number of HS-PDSCHs specified by the CQI Value , when added to the PS Data First HS-PDSCH Channel Code cannot exceed 15 (otherwise the HS-PDSCHs would collide with the downlink OCNS channels).

  Note that when you select a CQI Value that is defined by 3GPP TS 25.214 to have a non-zero "Reference power adjustment", the test set decreases the power present in the HS-PDSCHs accordingly (as expected, throughput no longer increases once you pass this point in the CQI table; rather, throughput decreases as HS-PDSCH power decreases). This change in power is reflected in the Conn Desired column of the Downlink Code Channel Information screen. For example, for a category 12 UE, if you set CQI Value to 18 , the power in the HS-PDSCHs is reduced from the HSDPA Cell 1 Connected HS-PDSCHs Level (Sum) setting of -3 dB to -6 dB.

  

  CQI Value can be set between 5 and 30. The following table, MAC-hs and IP Bit Rates (kbps) versus CQI Value and UE Category , summarizes the MAC-hs and IP bit rates achieved for each CQI Value , based on UE category.

  The MAC-hs bit rate is determined by multiplying the MAC-hs block size by the number of MAC-hs blocks transmitted per second. If inter-TTI interval * number of HARQ processes < 6, the number of MAC-hs blocks transmitted in 12 ms is equal to the number of HARQ processes, and the following formula applies:

  MAC-hs bit rate = (MAC-hs block size in bits)*(number of HARQ processes)/12 ms

  The maximum theoretical IP bit rate is determined by multiplying the number of IP bits delivered in each MAC-hs block by the number of MAC-hs blocks transmitted per second. If inter-TTI interval * number of HARQ processes < 6, then the following formula applies:

  IP bit rate = FLOOR[((MAC-hs block size in bits) - (21 MAC-hs header bits))/(MAC-d PDU Size)]*(MAC-d PDU Size - 16 header bits)*(number of HARQ processes)/12 ms

  Note that although the bit rates are equal between categories 1/2, 3/4, and 5/6, due to the larger IR buffer size of categories 2, 4 and 6, in a network these categories may realize higher actual data rates.

  MAC-hs and IP Bit Rates (kbps) versus CQI Value and UE Category

  	UE Category
  	1, 2		3, 4		5, 6		7, 8			9, 13, 17 (64QAM/MIMO not configured)			10, 14, 18 (64QAM/MIMO not configured)			11		12		13, 17 (64QAM configured)			14, 18 (64QAM configured)
  CQI Value	MAC-hs (kbps)	IP (kbps)	MAC-hs (kbps)	IP (kbps)	MAC-hs (kbps)	IP (kbps)	MAC-hs (kbps)	IP (kbps) MAC-d PDU Size = 336 bits	IP (kbps) MAC-d PDU Size = 656 bits	MAC-hs (kbps)	IP (kbps) MAC-d PDU Size = 336 bits	IP (kbps) MAC-d PDU Size = 656 bits	MAC-hs (kbps)	IP (kbps) MAC-d PDU Size = 336 bits	IP (kbps) MAC-d PDU Size = 656 bits	MAC-hs (kbps)	IP (kbps)	MAC-hs (kbps)	IP (kbps)	MAC-hs (kbps)	IP (kbps) MAC-d PDU Size = 336 bits	IP (kbps) MAC-d PDU Size = 656 bits	MAC-hs (kbps)	IP (kbps) MAC-d PDU Size = 336 bits	IP (kbps) MAC-d PDU Size = 656 bits
  5	63	53	94	80	189	160	189	160	N/A	189	160	N/A	189	160	N/A	94	80	189	160	188	160	N/A	188	160	N/A
  6	77	53	115	80	231	160	231	160	N/A	231	160	N/A	231	160	N/A	115	80	231	160	232	160	N/A	232	160	N/A
  7	108	53	163	80	325	160	325	160	N/A	325	160	N/A	325	160	N/A	163	80	325	160	324	160	N/A	324	160	N/A
  8	132	107	198	160	396	320	396	320	320	396	320	320	396	320	320	198	160	396	320	396	320	320	396	320	320
  9	155	107	233	160	466	320	466	320	320	466	320	320	466	320	320	233	160	466	320	464	320	320	464	320	320
  10	210	160	316	240	631	480	631	480	320	631	480	320	631	480	320	316	240	631	480	632	480	320	632	480	320
  11	247	213	371	320	742	640	742	640	640	742	640	640	742	640	640	371	320	742	640	744	640	640	744	640	640
  12	290	267	436	400	871	800	871	800	640	871	800	640	871	800	640	436	400	871	800	872	800	640	872	800	640
  13	380	320	570	480	1140	960	1140	960	960	1140	960	960	1140	960	960	570	480	1140	960	1144	960	960	1144	960	960
  14	431	373	646	560	1292	1120	1292	1120	960	1292	1120	960	1292	1120	960	646	560	1292	1120	1296	1120	960	1296	1120	960
  15	553	480	830	720	1660	1440	1660	1440	1600	1660	1440	1600	1660	1440	1600	830	720	1660	1440	1664	1440	1600	1664	1440	1600
  16	594	533	891	800	1783	1600	1783	1600	1600	1783	1600	1600	1783	1600	1600	830 *	720 *	1660 *	1440 *	1788	1600	1600	1788	1600	1600
  17	698	640	1047	960	2095	1920	2095	1920	1920	2095	1920	1920	2095	1920	1920	830 *	720 *	1660 *	1440 *	2100	1920	1920	2100	1920	1920
  18	777	693	1166	1040	2332	2080	2332	2080	2240	2332	2080	2240	2332	2080	2240	830 *	720 *	1660 *	1440 *	2336	2080	2240	2336	2080	2240
  19	881	800	1322	1200	2644	2400	2644	2400	2560	2644	2400	2560	2644	2400	2560	830 *	720 *	1660 *	1440 *	2648	2400	2560	2648	2400	2560
  20	981	907	1472	1360	2944	2720	2944	2720	2560	2944	2720	2560	2944	2720	2560	830 *	720 *	1660 *	1440 *	2948	2720	2560	2948	2720	2560
  21	1092	1013	1639	1520	3277	3040	3277	3040	2880	3277	3040	2880	3277	3040	2880	830 *	720 *	1660 *	1440 *	3284	3040	2880	3284	3040	2880
  22	1195	1120	1792	1680	3584	3360	3584	3360	3200	3584	3360	3200	3584	3360	3200	830 *	720 *	1660 *	1440 *	3592	3360	3200	3592	3360	3200
  23	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	4860	4480	4480	4860	4480	4480	4860	4480	4480	830 *	720 *	1660 *	1440 *	4868	4480	4480	4868	4480	4480
  24	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	5709	5280	5440	5709	5280	5440	5709	5280	5440	830 *	720 *	1660 *	1440 *	5716	5280	5440	5716	5280	5440
  25	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206	6720	6720	7206	6720	6720	7206	6720	6720	830 *	720 *	1660 *	1440 *	7212	6720	6720	7212	6720	6720
  26	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206 *	6720 *	6720 *	8619	8160	8320	8619	8160	8320	830 *	720 *	1660 *	1440 *	7888	7360	7680	7888	7360	7680
  27	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206 *	6720 *	6720 *	8619*	8160*	8320*	10877	10240	10560	830 *	720 *	1660 *	1440 *	10884	10240	10560	10884	10240	10560
  28	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206 *	6720 *	6720 *	8619*	8160*	8320*	11685	11040	11200	830 *	720 *	1660 *	1440 *	13252	12480	12800	13252	12480	12800
  29	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206 *	6720 *	6720 *	8619*	8160*	8320*	12111	11520	11520	830 *	720 *	1660 *	1440 *	16132	15200	15680	16132	15200	15680
  30	1195 *	1120 *	1792 *	1680 *	3584 *	3360 *	7206 *	6720 *	6720 *	8619*	8160*	8320*	12779	12160	12160	830 *	720 *	1660 *	1440 *	16132*	15200*	15680*	19288	18240	18560
  * denotes that a "Reference power adjustment" is specified by the CQI Value (in other words, although the bit rate is the same as the bit rate for the preceding CQI Value , the power in the HS-PDSCHs is reduced).
  Bold font denotes 16QAM modulation. Emphasis font denotes 64QAM modulation.

  GPIB command: CALL:HSDPa:SERVice:PSData:CQI[:VALue]

• CQI Value for MIMO

  This parameter specifies the CQI value used to configure the HSDPA channel when Current MIMO Configuration State is Active , PS Data HS-DSCH Configuration Type is set to CQI Value , and PS Data HS-DSCH MAC Entity is set to MAC_ehs .

  GPIB command: CALL:HSDPa:SERVice:PSData:MIMO:CQI:VALue

• PS Data Primary Precoding Weight

  This parameter specifies the primary precoding weight when MIMO is configured in the PS Data call. This seeting applies when PS Data HSDPA MIMO State is On , PS Data HS-DSCH Configuration Type is set to CQI Value or User Defined , and PS Data HS-DSCH MAC Entity is set to MAC_ehs .

  GPIB command: CALL:HSDPa:SERVice:PSData:MIMO:PPWeight[:STATic]

• PS Data User Def Number of Transport Blocks

  This parameter specifies the number of DL transport blocks when PS Data HS-DSCH Configuration Type is set to User Defined , PS Data HS-DSCH MAC Entity is set to MAC_ehs , and PS Data HSDPA MIMO State is On , .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:MIMO:TBLock:COUNt

• PS Data User Defined Active HS-PDSCHs

  Sets the number of HS-PDSCHs transmitted by the test set. This setting affects the transport block size (see PS Data User Def Transport Block Size Index ). You can change this setting while on a connection.

  The number of HS-PDSCHs specified by this setting, when added to the PS Data First HS-PDSCH Channel Code cannot exceed 15 (otherwise the HS-PDSCHs would collide with the downlink OCNS channels).

  This parameter is only applicable when the PS Data HS-DSCH Configuration Type is set to User Defined .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:HSPDschannel:COUNt

• PS Data User Def Transport Block Size Index

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:TBSize:INDex

• PS Data User Defined Modulation Type

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:MODulation[:TYPE]

• PS Data User Def Secondary TB Size Index

  This parameter specifies the secondary transport block size index for MIMO when PS Data HS-DSCH Configuration Type is set to User Defined , PS Data HS-DSCH MAC Entity is set to MAC_ehs , and PS Data HSDPA MIMO State is On , .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:STBSize:INDex

• PS Data User Def Secondary TB Modulation Type

  This parameter specifies the modulation type of the secondary transport block and determines the actual secondary transport block size. The setting applies when PS Data HS-DSCH Configuration Type is set to User Defined , PS Data HS-DSCH MAC Entity is set to MAC_ehs , and PS Data HSDPA MIMO State is On , .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:STBLock:MODulation[:TYPE]

• PS Data HS-DSCH 64QAM Configured State

  GPIB command: CALL:HSDPa:SERVice:PSData:QAM64:STATe

• PS Data HS-DSCH TB Size Table

  GPIB command: CALL:HSDPa:SERVice:PSData:MACEHS:HSDSchannel:TBSTable:ALIGnment

• PS Data User Def Transport Block Size Index

  Sets k _i (transport block size index) as described in 3GPP TS 25.321 s9.2.3. You can change this setting while on a connection.

  You cannot directly set the HS-DSCH (MAC-hs) transport block size. Rather, you must set the PS Data User Defined Active HS-PDSCHs , PS Data User Defined Modulation Type , and PS Data User Def Transport Block Size Index . The test set then calculates the HS-DSCH transport block size from these three settings. You can query the transport block size using the CALL:STATus:HSDSchannel:TBSize? command.

  3GPP TS 25.321 Annex A provides a mapping of the index k _t to HS-DSCH transport block size. 25.321 s9.2.3.1 specifies that k _t = k _i + k _0,i . 25.321 Table 9.2.3.1 provides values for k _0,i for different modulation types and number of active HS-PDSCHs. Thus, the HS-DSCH transport block size can be directly determined from the modulation type, number of active HS-PDSCHs, and transport block size index. For example, for a modulation type of 16QAM and 5 HS-PDSCHs, k _0,i = 131. Choosing a value of k _i = 48 results in a value of 179 for k _t , which is an HS-DSCH transport block size of 7298 bits.

  Note, if you set PS Data User Def Transport Block Size Index to a value that results in a transport block size that exceeds the maximum value for the Current UE HS-DSCH Category (see 3GPP TS 25.306 Table 5.1a), the test set will post a warning, but will still transmit using the requested block size. Transmitting too large of a block to the UE will likely result in undesirable behavior (the UE may stop its HS-DSCH reception altogether, and you may need to end and re-establish the connection with a smaller block size).

  Note, the test set ensures that the transport block size index does not cause the MAC-hs to become too small to carry a single MAC-d PDU (configured using the PS Data HS-DSCH MAC-d PDU Size parameter). Therefore, if a change is made to this parameter that results in too small of MAC-hs block size it will be rejected by the test set.

  GPIB command: CALL:HSDPa:SERVice:RBTest:UDEFined:TBSize:INDex

  This parameter is only applicable when the PS Data HS-DSCH Configuration Type is set to User Defined .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:TBSize:INDex

• PS Data User Defined Modulation Type

  Sets the modulation type used on the HS-PDSCHs. This setting affects the transport block size (see PS Data User Def Transport Block Size Index ). You can change this setting while on a connection.

  Note, not all UE categories support 16QAM. If you set PS Data User Defined Modulation Type to 16QAM when Current UE HS-DSCH Category is reporting a category that does not support 16QAM (see 3GPP TS 25.306 Table 5.1a), the test set will post a warning, but will still transmit using 16QAM modulation.

  Note, if you set PS Data User Defined Modulation Type to a value that results in a transport block size that exceeds the maximum value for the Current UE HS-DSCH Category (see 3GPP TS 25.306 Table 5.1a), the test set will post a warning, but will still transmit using the requested block size. See PS Data User Def Transport Block Size Index for more details.

  This parameter is only applicable when the PS Data HS-DSCH Configuration Type is set to User Defined .

  GPIB command: CALL:HSDPa:SERVice:PSData:UDEFined:MODulation[:TYPE]

• PS Data Minimum Inter-TTI Interval

  This parameter sets the control state and value of the of the minimum inter-TTI interval used on the downlink.

  The control state can be set to Auto or Manual mode. When in Auto mode, the minimum inter-TTI used on an HSDPA or HSPA PS data call is the minimum inter-TTI supported by the Current UE HS-DSCH Category. When in set to a value (manual mode), this parameter controls the absolute inter-TTI interval.

  Note, not all UE categories support an inter-TTI interval of less than 3 (see 3GPP TS 25.306 Table 5.1a). If you set PS Data Minimum Inter-TTI Interval to a value that is not supported by the Current UE HS-DSCH Category , the test set will post a warning, but will still transmit using the specified inter-TTI interval.

  You can change this setting while on a connection.

  GPIB commands:
  Control State: CALL:HSDPa:SERVice:PSData:ITTI[:INTerval]:MINimum:CONTrol:AUTO
  Manual Setting: CALL:HSDPa:SERVice:PSData:ITTI[:INTerval]:MINimum:MANual

• PS Data HS-DSCH 64QAM Configured State

  GPIB command: CALL:HSDPa:SERVice:PSData:QAM64:STATe

• PS Data HS-DSCH TB Size Table

  GPIB command: CALL:HSDPa:SERVice:PSData:MACEHS:HSDSchannel:TBSTable:ALIGnment

Secondary Serving Cell Parameters

• Secondary Serving Cell HS-DSCH Configuration Type

  GPIB command: CALL:HSDPa:SSCell:PSData:HSDschannel:CONFig[:TYPE]

• Secondary Serving Cell CQI Value

  GPIB command: CALL:HSDPa:SSCell:PSData:CQI[:VALue]

• PS Data User Defined Secondary Cell Active HS-PDSCHs

  GPIB command: CALL:HSDPa:SSCell:PSData:UDEFined:HSPDschannel:COUNt

• PS Data User Def Secondary Cell TB Size Index

  GPIB command: CALL:HSDPa:SSCell:PSData:UDEFined:TBSize:INDex

• PS Data User Defined Secondary Cell Modulation Type

  GPIB command: CALL:HSDPa:SSCell:PSData:UDEFined:MODulation[:TYPE]

• PSD Secondary Cell Minimum Inter-TTI Interval

  GPIB commands:
  Control State: CALL:HSDPa:SSCell:PSData:ITTI[:INTerval]:MINimum:CONTrol:AUTO
  Manual Setting: CALL:HSDPa:SSCell:PSData:ITTI[:INTerval]:MINimum:MANual

• PSD Secondary Cell HS-DSCH 64QAM Configured State

  GPIB command: CALL:HSDPa:SSCell:PSData:UDEFined:QAM64:STATe

• PSD Secondary Cell HS-DSCH TB Size Table

  GPIB command: CALL:HSDPa:SSCell:PSData:MACEHS:HSDSchannel:TBSTable:ALIGnment

Related Topics

HSDPA Parameters

Packet Switched Data

Establishing a Packet Data Connection

HSDPA in Active Cell Operating Mode