Counters _ Formulas HSDPA P4 RevC

P4 PS&HSDPA Counters and formulas

Filipovic Stevan, MC-TO-NDI-NPP-QME-EXTGiovacchini Massimo, MC-TO-NDI-NPP-QME-EXT

25 February 2011 tdocument.doc

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Table of contents

1 P4 HSDPA Counters...........................................................................................................4

2 Accessibility..................................................................................................52.1 CSSR (Call Setup Success Rate).......................................................................................52.1.1 CSSR PS Interactive......................................................................................................52.1.2 CSSR R99 Interactive....................................................................................................52.1.3 CSSR HS Interactive.....................................................................................................52.1.4 CSSR PS Streaming......................................................................................................62.2 RAB Accessibility.............................................................................................................62.2.1 PS Interactive RAB Accessibility......................................................................................62.2.2 R99 Interactive RAB Accessibility....................................................................................62.2.3 HS Interactive RAB Accessibility......................................................................................62.2.4 PS Streaming RAB Accessibility......................................................................................7

3 Number of users.............................................................................................73.1 PS Interactive Users.........................................................................................................73.2 PS DCH Interactive Users.................................................................................................73.3 PS FACH Interactive Users...............................................................................................73.4 HS A-DCHs Users............................................................................................................73.5 A-DCH number of links.....................................................................................................83.6 Average number of A-DCH links per user............................................................................83.7 PS Streaming + Packet 8kbps Users..................................................................................83.8 Average number of Uplink SF4 (384 kbps) links in the cell.....................................................8

4 Retainability..................................................................................................84.1 Drop rate........................................................................................................................84.1.1 PS Interactive Drop Rate................................................................................................84.1.2 R99 Interactive Drop Rate..............................................................................................94.1.3 HS Interactive Drop Rate................................................................................................94.1.4 PS Streaming Drop Rate................................................................................................94.2 Minutes per drop............................................................................................................104.2.1 PS Interactive Minutes per Drop....................................................................................104.2.2 R99 Interactive Minutes per Drop...................................................................................104.2.3 HS Interactive Minutes per Drop....................................................................................114.2.4 PS Streaming Minutes per Drop....................................................................................114.2.5 HS Interactive Erlangs between drop..............................................................................11

5 Call completion rate.......................................................................................115.1 PS Interactive CCSR......................................................................................................115.2 R99 Interactive CSSR.....................................................................................................125.3 HS Interactive CSSR......................................................................................................125.4 PS Streaming CSSR......................................................................................................12



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6 Integrity.....................................................................................................136.1 Uplink BLER..................................................................................................................136.1.1 Uplink PS Interactive BLER...........................................................................................136.1.2 Uplink PS Streaming + Packet 8kbps BLER....................................................................136.2 Throughput & Retransmission rate....................................................................................136.2.1 PS DCH/FACH Interactive Average Throughput (Kbit/s)....................................................136.2.2 PS DCH/FACH Interactive Retransmission Rate..............................................................146.2.3 HS Interactive Average Throughput (Kbit/s).....................................................................146.2.4 HS Interactive Retransmission Rate...............................................................................15

7 HS Mobility.................................................................................................157.1 HS Interactive Hard Handover Statistics............................................................................157.1.1 HS Interactive Hard Handover outgoing success rate.......................................................157.1.2 HS Interactive Hard Handover incoming success rate.......................................................167.2 HS Cell Change.............................................................................................................167.2.1 HS Interactive Cell Change success rate........................................................................16

8 Channel switching HS-DSCH to idle...................................................................16

9 Cell HS Availability........................................................................................169.1 Cell HS Availability.........................................................................................................169.2 Cell HS Unavailability due to Unplanned Down Time...........................................................179.3 Cell HS Unavailability due to Planned Down Time...............................................................17

10 Grade of Service for Packet-Switched Interactive (Admission control)........................1810.1 Blocking PS R99 Interactive...........................................................................................1810.2 Blocking HS Interactive formula......................................................................................1810.3 Blocking PS Streaming.................................................................................................18

11 Congestion HS...............................................................................................................18



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1 P4 HSDPA Counters

Please find below the list of new Ericsson P4 counters related to HSDPA functionality.

New pmHsDowntimeAuto HsdschNew pmHsDowntimeMan HsdschNew pmNoOfPacketCallDurationHs1 RncFunctionNew pmNoOfPacketCallDurationHs2 RncFunctionNew pmNoOfPacketCallDurationHs3 RncFunctionNew pmNoOfPacketCallDurationHs4 RncFunctionNew pmSentPacketDataHs1 RncFunctionNew pmSentPacketDataHs2 RncFunctionNew pmSentPacketDataHs3 RncFunctionNew pmSentPacketDataHs4 RncFunctionNew pmSentPacketDataInclRetransHs1 RncFunctionNew pmSentPacketDataInclRetransHs2 RncFunctionNew pmSentPacketDataInclRetransHs3 RncFunctionNew pmSentPacketDataInclRetransHs4 RncFunctionNew pmTotalPacketDurationHs1 RncFunctionNew pmTotalPacketDurationHs2 RncFunctionNew pmTotalPacketDurationHs3 RncFunctionNew pmTotalPacketDurationHs4 RncFunctionNew pmInactivityHsIdle UtranCellNew pmNoHsCcAttempt UtranCellNew pmNoHsCcSuccess UtranCellNew pmNoHsHardHoReturnOldChSource UtranCellNew pmNoHsHardHoReturnOldChTarget UtranCellNew pmNoIncomingHsHardHoAttempt UtranCellNew pmNoIncomingHsHardHoSuccess UtranCellNew pmNoNormalRbReleaseHs UtranCellNew pmNoOfIurTermHsCong UtranCellNew pmNoOfNonHoReqDeniedHs UtranCellNew pmNoOfTermHsCong UtranCellNew pmNoOutgoingHsHardHoAttempt UtranCellNew pmNoOutgoingHsHardHoSuccess UtranCellNew pmNoRabEstablishAttemptPacketInteractiveHs UtranCellNew pmNoRabEstablishSuccessPacketInteractiveHs UtranCellNew pmNoSystemRbReleaseHs UtranCellNew pmSamplesBestPsHsAdchRabEstablish UtranCellNew pmSamplesPsHsAdchRabEstablish UtranCellNew pmSumBestPsHsAdchRabEstablish UtranCellNew pmSumPsHsAdchRabEstablish UtranCell



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2 Accessibility

2.1 CSSR (Call Setup Success Rate)

2.1.1 CSSR PS Interactive

PInt_A(UtranCell) = 100[%] ×[pmTotNoRrcConnectReqPsSucc(UtranCell)/pmTotNoRrcConnectReqPs(UtranCell)]×[pmNoRabEstablishSuccessPacketInteractive(UtranCell)/((pmNoRabEstablishAttemptPacketInteractive(UtranCell) —HS_HardHO_Flow1 (UtranCell))] [1]

WhereHS_HardHO_Flow1(UtranCell)=(pmOutgoingHsHardHoAttempt(UtranCell) -pmNoHsHardHoReturnOldChSource(UtranCell)) - (pmIncominHsHardHoAttempt(UtranCell)-pmNoHsHardHoReturnOldChTarget(UtranCell))

[2]

2.1.2 CSSR R99 Interactive

Accessibility success rate per UtranCell for PS interactive DCH/FACH is givenbyPInt_DCH_A(UtranCell) = 100[%] ×[(pmTotNoRrcConnectReqPsSucc(UtranCell) /pmTotNoRrcConnectReqPs(UtranCell)]×[(pmNoRabEstablishSuccessPacketInteractive(UtranCell) —pmNoRabEstablishSuccessPacketInteractiveHs(UtranCell)) /(pmNoRabEstablishAttemptPacketInteractive(UtranCell) —pmNoRabEstablishAttemptPacketInteractiveHs(UtranCell)— HS_HardHO_Flow2 (UtranCell))] [3]

HS_HardHO_Flow2(UtranCell)=(pmOutgoingHsHardHoAttempt(UtranCell)— pmNoHsHardHoReturnOldChSource(UtranCell) — pmIncominHsHardHoAttempt(UtranCell)) [3.1]

2.1.3 CSSR HS Interactive

PInt_A(UtranCell) = 100[%] ×[pmTotNoRrcConnectReqPsSucc(UtranCell)/



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pmTotNoRrcConnectReqPs(UtranCell)]×[pmNoRabEstablishSuccessPacketInteractiveHs(UtranCell) /pmNoRabEstablishAttemptPacketInteractiveHs(UtranCell)] [4]

2.1.4 CSSR PS Streaming

Accessibility success rate per UtranCell for PS streaming is given byPStr_A(UtranCell) = 100[%] ×[pmTotNoRrcConnectReqPsSucc(UtranCell) /pmTotNoRrcConnectReqPs(UtranCell)]×[(pmNoRabEstablishSuccessPacketStream(UtranCell) +pmNoRabEstablishSuccessPacketStream128(UtranCell)) /(pmNoRabEstablishAttemptPacketStream(UtranCell) + pmNoRabEstablishAttemptPacketStream128(UtranCell))] [5]

2.2 RAB Accessibility

2.2.1 PS Interactive RAB Accessibility

100 * { pmNoRabEstablishSuccessPacketInteractive / [pmNoRabEstablishAttemptPacketInteractive - HS_HardHO_Flow1 ]} [6]

2.2.2 R99 Interactive RAB Accessibility

100 * { (pmNoRabEstablishSuccessPacketInteractive – pmNoRabEstablishSuccessPacketInteractiveHs) / [pmNoRabEstablishAttemptPacketInteractive - pmNoRabEstablishAttemptPacketInteractiveHs - HS_HardHO_Flow2] [7]

2.2.3 HS Interactive RAB Accessibility

Accessibility success rate per UtranCell for PS interactive HS is given byPInt_HS_A(UtranCell) = 100[%] ×



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[pmNoRabEstablishSuccessPacketInteractiveHs(UtranCell) /pmNoRabEstablishAttemptPacketInteractiveHs(UtranCell)] [8]

2.2.4 PS Streaming RAB Accessibility

100 * [(pmNoRabEstablishSuccessPacketStream(UtranCell) +pmNoRabEstablishSuccessPacketStream128(UtranCell)) /(pmNoRabEstablishAttemptPacketStream(UtranCell) + pmNoRabEstablishAttemptPacketStream128(UtranCell))] [9]

3 Number of users

3.1 PS Interactive Users

The average number of PS Data Interactive users per UtranCell is given byPint_U_User(UtranCell) =[(pmSumBestDchPsIntRabEstablish(UtranCell) / pmSamplesBestDchPsIntRabEstablish(UtranCell)) +(pmSumBestPsHsAdchRabEstablish(UtranCell) /pmSamplesBestPsHsAdchRabEstablish(UtranCell)) +(pmSumFachPsIntRabEstablish(UtranCell) /pmSamplesFachPsIntRabEstablish(UtranCell))] [10]

3.2 PS DCH Interactive Users

The average number of PS Data DCH Interactive users per UtranCell is given byPintDCH_U_User(UtranCell) =pmSumBestDchPsIntRabEstablish(UtranCell) /pmSamplesBestDchPsIntRabEstablish(UtranCell) [11]

3.3 PS FACH Interactive Users

The average number of PS Interactive Users on FACH per UtranCell is given byPintFach_U_User(UtranCell) =pmSumFachPsIntRabEstablish(UtranCell) /pmSamplesFachPsIntRabEstablish(UtranCell) [12]



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3.4 HS A-DCHs Users

The average number of A-DCHs users per UtranCell is given by

PintHs_U_User(UtranCell) =pmSumBestPsHsAdchRabEstablish(UtranCell) /pmSamplesBestPsHsAdchRabEstablish(UtranCell) [13]

3.5 A-DCH number of links

PintHs_U_RLinks(UtranCell) =pmSumPsHsAdchRabEstablish(UtranCell) /pmSamplesPsHsAdchRabEstablish(UtranCell) [14]

3.6 Average number of A-DCH links per user

PintHs_U_User(UtranCell)/ PintHs_U_RLinks(UtranCell) [15]

3.7 PS Streaming + Packet 8kbps Users

The average number of PS Streaming + Packet 8kbps PS users per UtranCellis given byPstr_P8_U_User(UtranCell) =[pmSumBestPsStr64Ps8RabEstablish(UtranCell) /pmSamplesBestPsStr64Ps8RabEstablish(UtranCell)]+[pmSumBestPsStr128Ps8RabEstablish(UtranCell) / pmSamplesBestPsStr128Ps8RabEstablish(UtranCell)] [16]

3.8 Average number of Uplink SF4 (384 kbps) links in the cell

PintSF4_Ul_Rlinks = pmSumSf4Ul (UtranCell) / pmSamplesSf4Ul (UtranCell) [17]

4 Retainability

4.1 Drop rate

4.1.1 PS Interactive Drop Rate

The Packet-Switched drop rate per UtranCell for all PS services is given by



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Pint_R_D (UtranCell) = 100[%] x[pmNoSystemRabReleasePacket(UtranCell) – pmNoSystemRabReleasePacketStream(UtranCell) - pmNoNoSystemRabReleasePacketStream128(UtranCell)] /[(pmNoNormalRabReleasePacket(UtranCell) + pmNoSystemRabReleasePacket(UtranCell) -(pmNoNormalRabReleasePacketStream(UtranCell)+ pmNoSystemRabReleasePacketStream(UtranCell)) – (pmNoNormalRabReleasePacketStream128(UtranCell)+ pmNoSystemRabReleasePacketStream128(UtranCell))] [18]

Drop over Iur link for the Drifting Ue’s

Pint_R_D (IurLink) = 100[%] x[pmNoSystemRabReleasePacket(IurLink) – pmNoSystemRabReleasePacketStream(IurLink) - pmNoNoSystemRabReleasePacketStream128(IurLink)] /[(pmNoNormalRabReleasePacket(IurLink) + pmNoSystemRabReleasePacket(IurLink) -(pmNoNormalRabReleasePacketStream(IurLink)+ pmNoSystemRabReleasePacketStream(IurLink)) – (pmNoNormalRabReleasePacketStream128(IurLink)+ pmNoSystemRabReleasePacketStream128(IurLink))] [19]

4.1.2 R99 Interactive Drop Rate

100 * (pmNoSystemRabReleasePacket – pnNoSystemRbReleaseHs - pmNoSystemRabReleasePacketStream - pmNoNoSystemRabReleasePacketStream128) / [(pmNoNormalRabReleasePacket + pmNoSystemRabReleasePacket) – (pmNoNormalRabReleasePacketStream+ pmNoSystemRabReleasePacketStream) – (pmNoNormalRabReleasePacketStream128+ pmNoSystemRabReleasePacketStream128) – (pmNoNormalRbReleaseHs + pmNoSystemRbReleaseHs)] [20]

4.1.3 HS Interactive Drop Rate

Pint_HS_D (UtranCell) = 100[%] x[pmNoSystemRbReleaseHs(UtranCell)/(pmNoNormalRbReleaseHs(UtranCell) + pmNoSystemRbReleaseHs(UtranCell))] [21]

Drop over Iur link for the Drifting Ue’s

Pint_HS_D (Iurlink) = 100[%] x[pmNoSystemRbReleaseHs(Iurlink) /(pmNoNormalRbReleaseHs(Iurlink) + pmNoSystemRbReleaseHs(Iurlink))] [22]



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4.1.4 PS Streaming Drop Rate

The drop rate per UtranCell for PS Streaming is given by

PStr_R_D(UtranCell) = 100[%] ×[pmNoSystemRabReleasePacketStream(UtranCell) + pmNoSystem-RabReleasePacketStream128(UtranCell)] /[pmNoNormalRabReleasePacketStream(UtranCell) + pmNoSystemRabReleasePacketStream(UtranCell) + pmNoNormalRabReleasePacketStream128(UtranCell) + pmNoSystemRabReleasePacketStream128(UtranCell)] [23]

The drop rate per IurLink for Drifting UEs in neighboring RNCs for PS Streamingis given by

PStr_R_D(IurLink) = 100[%] ×[pmNoSystemRabReleasePacketStream(IurLink) + pmNoSystem-RabReleasePacketStream128(IurLink)] /[pmNoNormalRabReleasePacketStream(IurLink) + pmNoSystemRabReleasePacketStream(IurLink) + pmNoNormalRabReleasePacketStream128(IurLink) + pmNoSystemRabReleasePacketStream128(IurLink)] [24]

The total drop rate per RNC including Drifting UEs for speech is given bysummarizing all cell level counters up to RNC level together with all Iur levelcounters for that particular RNC from IurLinks in neighboring RNCs.

4.2 Minutes per drop

4.2.1 PS Interactive Minutes per Drop

The Packet-Switched (PS) Interactive Minutes per Drop per UtranCell is given byPint_R_MD(UtranCell) = PERLEN ×Pint_U_User(UtranCell) /[pmNoSystemRabReleasePacket(UtranCell) - pmNoSystemRabReleasePacketStream(UtranCell) - pmNoSystemRabReleasePacketStream128(UtranCell)] [25]PERLEN is the measurement time in minutes, i.e. 15 for one ROP.

4.2.2 R99 Interactive Minutes per Drop

Packet-Switched (PS) Interactive DCH/FACH Minutes per Drop



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Packet-Switched (PS) Interactive DCH/FACH Minutes per Drop per UtranCell isgiven byPintDCH_R_MD(UtranCell) = PERLEN ×[PintDCH_U_User(UtranCell) +PintFach_U_User(UtranCell)] / [pmNoSystemRabReleasePacket(UtranCell) - pmNoSystemRbReleaseHs(UtranCell) – pmNoSystemRabReleasePacketStream(UtranCell) - pmNoSystemRabReleasePacketStream128(UtranCell)] [26]PERLEN is the measurement time in minutes, i.e. 15 for one ROP.

4.2.3 HS Interactive Minutes per Drop

Packet-Switched (PS) Interactive HS Minutes per Drop per UtranCell is given byPintHS_R_MD(UtranCell) = PERLEN ×(PintHS_U_User(UtranCell) /pmNoSystemRbReleaseHs(UtranCell))==PERLEN × {[(pmSumBestPsHsAdchRabEstablish(UtranCell) /pmSamplesBestPsHsAdchRabEstablish(UtranCell)] / pmNoSystemRbReleaseHs(UtranCell)} [27]

PERLEN is the measurement time in minutes, i.e. 15 for one ROP.

4.2.4 PS Streaming Minutes per Drop

Packet-Switched (PS) Streaming Minutes per DropThe Packet-Switched (PS) Streaming Minutes per Drop per UtranCell is given byPStr_R_MD(UtranCell) = PERLEN × Pstr_P8_U_User(UtranCell) /(pmNoSystemRabReleasePacketStream(UtranCell) + pmNoSystemRabReleasePacketStream128(UtranCell)) [28]PERLEN is the measurement time in minutes, i.e. 15 for one ROP..

4.2.5 HS Interactive Erlangs between drop

PintHS_Er_D = 100 * [( pmSumBestPsHsAdchRabEstablish / pmSamplesBestPsHsAdchRabEstablish ) / pmNoSystemRbReleaseHs ] [29]

5 Call completion rate

5.1 PS Interactive CCSR



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Since call completion for packet data services from user perspective iscompleting its service and temporary interruption may be recovered by higherlayer due to retransmission, the packet call completion rate per UtranCell couldbe approximated from user perspective with the following equation:

Pint_C(UtranCell) = Pint_A(UtranCell) ×( 1 – Pint_R_D (UtranCell) / 100[%])

Pint_C = 100 * {( pmTotNoRrcConnectReqPsSucc / pmTotNoRrcConnectReqPs ) * [pmNoRabEstablishSuccessPacketInteractive / (pmNoRabEstablishAttemptPacketInteractive - HS_HardHO_Flow1)] * [ (pmNoNormalRabReleasePacket – pmNoNormalRabReleasePacketStream - pmNoNormalRabReleasePacketStream128) / (( pmNoNormalRabReleasePacket + pmNoSystemRabReleasePacket ) -(pmNoNormalRabReleasePacketStream+ pmNoSystemRabReleasePacketStream) – (pmNoNormalRabReleasePacketStream128+ pmNoSystemRabReleasePacketStream128))]}

[30]

5.2 R99 Interactive CSSR

Pint_R99_C = 100 * {( pmTotNoRrcConnectReqPsSucc / pmTotNoRrcConnectReqPs ) * [(pmNoRabEstablishSuccessPacketInteractive – pmNoRabEstablishSuccessPacketInteractiveHs) / (pmNoRabEstablishAttemptPacketInteractive - pmNoRabEstablishAttemptPacketInteractiveHs - HS_HardHO_Flow2)]* [ (pmNoNormalRabReleasePacket- pmNoNormalRabReleasePacketStream – pmNoNormalRabReleasePacket128Stream - pmNoNormalRbReleaseHs) / ((pmNoNormalRabReleasePacket + pmNoSystemRabReleasePacket) – (pmNoSystemRabReleasePacketStream + pmNoNormalRabReleasePacketStream) –(pmNoSystemRabReleasePacket128Stream + pmNoNormalRabReleasePacket128Stream) – (pmNoSystemRbReleaseHs + pmNoNormalRbReleaseHs))]} [31]

5.3 HS Interactive CCSR

Pint_HS_C= 100 * {( pmTotNoRrcConnectReqPsSucc / pmTotNoRrcConnectReqPs ) * (pmNoRabEstablishSuccessPacketInteractiveHs / pmNoRabEstablishAttemptPacketInteractiveHs ) * ( pmNoNormalRbReleaseHs / ( pmNoSystemRbReleaseHs + pmNoNormalRbReleaseHs ))}

[32]

5.4 PS Streaming CCSR

The call completion success rate per UtranCell for PS Streaming is given by



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PStr_C(UtranCell) = PStr_A(UtranCell) ×(1 – PStr_R_D(UtranCell) / 100[%]) [33]

6 Integrity

6.1 Uplink BLER

6.1.1 Uplink PS Interactive BLER

The following equation measures the transport block error rate after combiningat RNC in uplink for PS interactive (UeRc = 4, 5, 6, 7, 15,16). The user maychoose to track the BLER per PS interactive type or collectively. The followingequation shows per PS interactive and the collective can be calculated bysumming over UeRc for each counter.

Pint_I_UL[UeRc] = 100[%] ×(pmFaultyTransportBlocksAcUl[UeRc ] /pmTransportBlocksAcUl[UeRc ]) [34]

UeRc relevant for HSDPA Integrity calculations are

UeRc=15 ; PS Interactice 64/HS

UeRC=16 ; PS Interactive 384/HS

6.1.2 Uplink PS Streaming + Packet 8kbps BLER

The following equation measures the transport block error rate after combiningat RNC in uplink for PS streaming + Packet 8kbps(UeRc = 13, 17).Pstr_I_UL[UeRc = 13,17] = 100[%] ×(pmFaultyTransportBlocksAcUl[UeRc = 13, 17] /pmTransportBlocksAcUl[UeRc = 13, 17]) [35]

6.2 Throughput & Retransmission rate

6.2.1 PS DCH/FACH Interactive Average Throughput (Kbit/s)

The following equation measures the Average Throughput for PS interactive



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DCH/FACHPintDCH_I_TP(RncFunction)=8*1000*[(pmSentPacketData1(RncFunction)/1000+pmSentPacketData2(RncFunction)/1000+ pmSentPacketData3(RncFunction)+pmSentPacketData4(RncFunction)] /[pmTotalPacketDuration1(RncFunction)+pmTotalPacketDuration2(RncFunction)+ pmTotalPacketDuration3(RncFunction)+pmTotalPacketDuration4(RncFunction)] [36]

6.2.2 PS DCH/FACH Interactive Retransmission Rate

The following equation measures the Retransmission Rate for PS interactiveDCH/FACHPintDCH_I_Ret(RncFunction)=[pmSentPacketData1(RncFunction)/1000+pmSentPacketData2(RncFunction)/1000+ pmSentPacketData3(RncFunction)+pmSentPacketData4(RncFunction)] /[pmSentPacketDataInclRetrans1(RncFunction)/1000+pmSentPacketDataInclRetrans2(RncFunction)/1000+ pmSentPacketDataInclRetrans3(RncFunction)+pmSentPacketDataInclRetrans4(RncFunction)] [37]

6.2.3 HS Interactive Average Throughput (Kbit/s)

The following equation measures the Average Throughput for PS interactive HS

PintHS_I_TP(RncFunction) =8*1000*[pmSentPacketDataHs1(RncFunction)/1000 +pmSentPacketDataHs2(RncFunction)/1000 + pmSentPacketDataHs3(RncFunction)+pmSentPacketDataHs4(RncFunction)] /[pmTotalPacketDurationHs1(RncFunction)+pmTotalPacketDurationHs2(RncFunction)+pmTotalPacketDurationHs3(RncFunction)+pmTotalPacketDurationHs4(RncFunction)] [38]

Hs1-4 represent different sizes of the data burst

pmSentPacketDataHs1 - Accumulated amount (in bytes)of user data transmitted in bursts of sizebetween 200 bytes and 1 kbyte for all Interactive RABs on HSDPA, not including retransmissions.pmSentPacketDataHs2 - Accumulated amount (in bytes) of user data transmitted in bursts of sizebetween 1 kbyte and 10 kbytes for all Interactive RABs on HSDPA, not including retransmissions.



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pmSentPacketDataHs3 - Accumulated amount (in bytes) of user data transmitted in bursts of sizebetween 10 kbytes and 100 kbytes for all Interactive RABs on HSDPA, not including retransmissions.pmSentPacketDataHs4 - Accumulated amount (in bytes) of user data transmitted in bursts of sizegreater size than 100 kbytes for all Interactive RABs on HSDPA, not including retransmissions.

6.2.4 HS Interactive Retransmission Rate

The following equation measures the Retransmission Rate for PS interactive HSPintHS_I_Ret(RncFunction)=[pmSentPacketDataHs1(RncFunction)/1000+pmSentPacketDataHs2(RncFunction)/1000+pmSentPacketDataHs3(RncFunction)+pmSentPacketDataHs4(RncFunction)] /[pmSentPacketDataInclRetransHs1(RncFunction)/1000+pmSentPacketDataInclRetransHs2(RncFunction)/1000+ pmSentPacketDataInclRetransHs3(RncFunction)+pmSentPacketDataInclRetransHs4(RncFunction)] [39]

7 HS Mobility

7.1 HS Interactive Hard Handover Statistics

In this section, the equations for PS Interactive HS Hard Handover successrate are covered.

7.1.1 HS Interactive Hard Handover outgoing success rate

The following metric measures the outgoing success rate for HS Hard handover.PS_M_HSHardOut_S(UtranRelation) = 100[%] ×[pmNoOutgoingHsHardHoSuccess(UtranCell)/pmNoOutgoingHsHardHoAttempt(UtranCell)] [40]

Additional P4 counters could also be observed

pmNoHsHardHoReturnOldChSource - Number of failed Hard HO for serving HS-DSCH cell selection and UE connection maintained (source cell). The counter is stepped in the source cell after a RRC Physical ChannelReconfiguration Failure has been received from the UE during a Hardhandover in Serving HS-DSCH Cell Selection.



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pmNoHsHardHoReturnOldChTarget - Number of failed Hard HO for serving HS-DSCH cell selection and UE connection maintained (target cell). The counter is stepped in the source cell after a RRC Physical ChannelReconfiguration Failure has been received from the UE during a Hardhandover in Serving HS-DSCH Cell Selection.

7.1.2 HS Interactive Hard Handover incoming success rate

The following metric measures the incoming success rate for HS Hard handover.PS_M_HSHardIn_S(UtranRelation) = 100[%] ×[pmNoIncomingHsHardHoSuccess(UtranCell) /pmNoIncomingHsHardHoAttempt(UtranCell)] [41]

7.2 HS Cell Change

7.2.1 HS Interactive Cell Change success rate

The following metric measures the success rate for HS Cell Change in target cellPS_M_HSCC_S(UtranCell) = 100[%] ×[pmHsCcSuccess(UtranCell) /pmHsCcAttempt(UtranCell)] [42]

8 Channel switching HS-DSCH to idle

P4 counter could be observed

pmInactivityHsIdle - The number of signaling connection releases triggered for PS InteractiveRAB mapped on HS-DSCH due to inactivity. Channel Switching Evaluation algorithms request the execution of a switch to idle. The counter is stepped at the reception of RANAP Iu Release Commandfrom CN, for HS channel cell or RANAP RAB Assignment Request (when theRAB is released) and the RANAP cause is User Inactivity.

9 Cell HS Availability

9.1 Cell HS Availability



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The length of time in seconds that a cell is available for Packet Interactive HSservice is defined as cell HS availability. For example, cell HS availability during24 hour period can be calculated as follows

Av_HS(Hsdsch) = 100[%] ×{24 × 3600 – [(pmHsDowntimeAuto(Hsdsch) + pmHsDowntimeMan(Hsdsch)]} / (24 × 3600) [43]

where pmHsDowntimeAuto measures the length of time in seconds duringwhich a cell is unavailable for HS service due to an unplanned downtime andpmHsDowntimeMan measures the length of time in seconds during which a cellis unavailable for HS service due to a planned downtime. Note that the reportedvalue of pmHsDowntimeAuto and pmHsDowntimeMan for each 15 minuteperiod must be aggregated over the 24 hour observation period.

9.2 Cell HS Unavailability due to Unplanned Down Time

The length of time in seconds that a cell is unavailable for HS service due tomalfunction is called unplanned HS downtime. This period can be measuredby pHsDowntimeAuto(Hsdsch) in seconds. For example, the followingformulae can be used to measure the percentage of unplanned HS downtimein 24 hour period.

Av_Auto_HS(Hsdsch) = 100[%] ×[pmHsDowntimeAuto(Hsdsch)] / (24 × 3600) [44]

Note that the reported value of pmHsDowntimeAuto for each 15 minute periodmust be aggregated over the 24 hour observation period in the above equation.

9.3 Cell HS Unavailability due to Planned Down Time

The length of time in seconds that a cell is unavailable for HS service due tomaintenance is called planned HS downtime. This period can be measured bypmHsDowntimeMan(Hsdsch) in seconds. For example, the following formulaecan be used to measure the percentage of planned downtime in 24 hour period.

Av_Man_HS(Hsdsch) = 100[%] ×[pmHsDowntimeMan(Hsdsch)] / (24 × 3600) [45]

Note that the value of pmHsDowntimeMan(Hsdsch)for each 15 minute period must be aggregated over 24 hour observation periodin the above equation.



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10 Grade of Service for Packet-Switched Interactive (Admission control)

10.1 Blocking PS R99 Interactive

Blocking rate for PS interactive calls per UtranCell due to admission basedon downlink power, downlink channelization code, downlink Average SpeechEquivalent (ASE), and uplink Average Speech Equivalent is given by

Pint_A_GoS(UtranCell) = 100[%] ×[(pmNoOfNonHoReqDeniedInteractive(UtranCell)) /pmNoRabEstablishAttemptPacketInteractive(UtranCell)] [46]

The GoS or blocking probability can be used together with Erlang metric tomeasure the cell capacity for a given service. Since a cell serves a mixed traffic,this measure must be used with respect to the amount of traffic measuredfor other services.

10.2 Blocking HS Interactive formula

Blocking rate due to Admission for HSDPA

PintHS_GoS_RN= pmNoOfNonHoReqDeniedHs / pmNoRabEstablishAttemptPacketInteractiveHs[47]

10.3 Blocking PS Streaming

The blocking rate for PS streaming calls per UtranCell due to admission basedon downlink power, downlink channelization code, downlink Average SpeechEquivalent (ASE), and uplink Average Speech Equivalent is given byPstr_A_GoS(UtranCell) = 100[%] ×[(pmNoOfNonHoReqDeniedPsStreaming(UtranCell) +pmNoOfNonHoReqDeniedPsStr128(UtranCell)) /(pmNoRabEstablishAttemptPacketStream(UtranCell) +pmNoRabEstablishAttemptPacketStream128(UtranCell))] [48]The GoS or blocking probability can be used together with Erlang metric tomeasure the cell capacity for a given service. Since a cell serves a mixed traffic,this measure must be used with respect to the amount of traffic measuredfor other services.



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11 Congestion HS

Formula is taking percentage of HSDPA disconnections due to congestion in the cell, divided by the total number of the HSDPA disconnections in that cell.

HS_Rd_Cong = 100 * [ pmNoOfTermHsCong / (pmNoNormalRbReleaseHs(UtranCell) + pmNoSystemRbReleaseHs(UtranCell))] [49]

Note: For more Admission and Congestion related formulas, please look document KPI_v05_Swisscom



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Counters _ Formulas HSDPA P4 RevC

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