Hsdpa Enhancements
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RN30083EN30GLA0
HSDPA Enhancements
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Soc Classification level2 Nokia Siemens Networks RN30083EN30GLA0
Agenda
1) RU20 RECAP2) RU30 Feature overview3) HSDPA Enhancements4) HSUPA Enhancements5) New Mobility Concepts6) New Hardware and Performance Measurement Features
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Soc Classification level3 Nokia Siemens Networks RN30083EN30GLA0
MIMO and 64 QAM
Dual cell HSDPA with MIMO and 64 QAMHS Cell_FACHDynamic HSDPA BLER
HSDPA Enhancements
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Soc Classification level4 Nokia Siemens Networks RN30083EN30GLA0
HSDPA Enhancements
MIMO and 64 QAM
Dual cell HSDPA with MIMO and 64 QAMHS Cell_FACHDynamic HSDPA BLER
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Soc Classification level5 Nokia Siemens Networks RN30083EN30GLA0
MIMO and 64QAM RU20 and RU30HSDPA RU20 MIMO available by RAN 1642 OR
64QAM available by RAN 1643 But NOT both simultaneously
HSDPA RU30
MIMO AND 64QAM simultaneously availably by RAN 1912
RAN1912 RAN1642 RAN1643= +
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Soc Classification level6 Nokia Siemens Networks RN30083EN30GLA0
Software RAN 1642 MIMO RAN 1643 64QAM RAN 1638 Flexible RLC
Hardware WBTS release 7.0 RAN 1016 / RAN1848 Flexi BTS Multimode System Module (FSME) or
RAN 1671 Enhanced UltraSite BaseBand (EUBB)
Mandatory Features for MIMO + 64QAM
RAN1912
RAN1642
RAN1643
RAN1638 RAN1671
RAN1016/RAN1848
or
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Soc Classification level7 Nokia Siemens Networks RN30083EN30GLA0
Downlink RAN 1201 F-DPCH (Fractional DPCH)
Less power consumption Lower code tree occupation
Recommended Features for MIMO + 64QAM
RAN1201 Fractional DPCH
RAN1912 MIMO + 64QAM
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Soc Classification level8 Nokia Siemens Networks RN30083EN30GLA0
Peak throughput MIMO alone with 16QAM 2 * 14 Mbps = 28 Mbps
64QAM alone without MIMO
6 / 4 * 14 Mbps = 21 Mbps MIMO with 64QAM 2 * 21 Mbps = 42 Mpbs
UE categories MIMO alone Category 15 + 16 64QAM alone Category 13 + 14 64 QAM OR MIMO Category 17 + 18 64 QAM AND MIMO Category 19 + 20
Peak Throughput and UE Categories
HS- DSCHcategory
max. HS-DSCH Codes Modulation
MIMOsupport
PeakRate
19 15 QPSK/16QAM/64QAM
Yes 35.3 Mbps
20 15 QPSK/16QAM/64QAM
Yes 42.2 Mbps
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Soc Classification level9 Nokia Siemens Networks RN30083EN30GLA0
MIMO ConceptsSingle Stream On both HS-DSCH the same TBS is sent
The following information is transmitted by the HS channels HS-DSCH : 1 TBS transmitted per TTI on HS-DSCH HS-SCCH : TF 1, rank 1 and pre-coding control information sent to UE HS-DPCCH : CQI, ACK/NACK, rank 1 and pre-coding control information
Single Stream
CQI1, ACK/NACK, Rank 1, PCI
Rank 1, TF1, PCI
HS-DSCH TBS 1
TBS 1
HS-SCCH
HS-DPCCH
UE
BTS
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Soc Classification level10 Nokia Siemens Networks RN30083EN30GLA0
MIMO ConceptsDual Stream On the two HS-DSCH different TBS are sent
The following information is transmitted by the HS channels HS-DSCH : 2 TBS transmitted per TTI on the two HS-DSCH HS-SCCH : TF 1 and 2, rank 2 and pre-coding control information sent to UE HS-DPCCH : CQI 1 and 2, ACK/NACK, rank 2 and pre-coding control information
Dual Stream
CQI1 + CQI2, ACK/NACK, Rank 2, P CI
Rank 1, TF1 + TF2, PCI
HS-DSCH TBS 1
TBS 2
HS-SCCH
HS-DPCCH
UE
BTS
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MIMO ConceptsVirtual Antenna Dual Stream Special mapping function used to divide signal 1 (virtual antenna 1) and signal 2 (virtual antenna
2)
Mapping function transparent to UE, and same mapping used for reference signals P-CPICHand S-CPICH
MIMO CQI and PCI feedback from UE works as specified
P-CPICHOther cc:s, DCH, etc.
HSDPAdata1 S RF1
RF2
Ant1
Ant2S-CPICH
HSDPA12
w2
HSDPA11w1
Sw3
w4
HSDPAdata2
HSDPA21
HSDPA22
3GPP MIMO dual stream
V-Ant1
V-Ant2
Proprietaryantennamapping
H
s1
s2
s1
s2
P-CPICHOther cc:s, DCH, etc.
HSDPAdata1 S RF1
RF2
Ant1
Ant2S-CPICH
HSDPA12
w2
HSDPA11w1
Sw3
w4
HSDPAdata2
HSDPA21
HSDPA22
3GPP MIMO dual stream
V-Ant1
V-Ant2
Proprietaryantennamapping
H
Propriet aryantennamapping
H
s1
s2
s1
s2
Concept Power split
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Soc Classification level12 Nokia Siemens Networks RN30083EN30GLA0
MIMO ConceptsVirtual Antenna Single Stream Mapping function just applied to single data stream
Just 2 instead of 4 signal components transmitted per RF
P-CPICH
Other cc:s, DCH, etc.
HSDPAdata
S RF1
RF2
Ant1
Ant2S-CPICH
HSDPA2
w2
HSDPA1
w1
S
s1
s2
3GPP MIMO Single stream
V-Ant1
V-Ant2
s1
s2
Proprietaryantennamapping
H
P-CPICH
Other cc:s, DCH, etc.
HSDPAdata
S RF1
RF2
Ant1
Ant2S-CPICH
HSDPA2
w2
HSDPA1
w1
S
s1
s2
3GPP MIMO Single stream
V-Ant1
V-Ant2
s1
s2
Proprietaryantennamapping
H
Propriet aryantennamapping
H
Concept Power split
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Soc Classification level13 Nokia Siemens Networks RN30083EN30GLA0
MIMO ConceptsVirtual Antenna UE not supporting MIMO Mapping function like for single stream MIMO, but weighting factor for signal 2 set to 0
As a consequence the same single signal component transmitted per RF Non MIMO UEs supported by MIMO cell as well
Concept Power split
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Soc Classification level14 Nokia Siemens Networks RN30083EN30GLA0
MIMO ConceptsSelection of MIMO mode and modulation Both the MIMO mode and the modulation are offered in dependence on the air
interface Bad conditions Single stream Good conditions Dual stream Excellent conditions Dual stream + 64QAM
If both MIMO AND 64QAM is not possible, but either MIMO OR 64QAM, then MIMO ispreferred
Dual stream + 64QAM
Dual stream
Single stream
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Soc Classification level15 Nokia Siemens Networks RN30083EN30GLA0
Feature ActivationThe following parameters must be set to enabled HSDPAEnabled (WCEL)
HSUPAEnabled (WCEL) MIMOEnabled (WCEL) HSDPA64QAMAllowed (WCEL) FRLCEnabled (RNFC) MIMOWith64QAMUsage (WCEL)
One should pay attention to potentially stronger limits defined with thefollowing parameters MaxBitRateNRTMACDFlow (RNHSPA, 128..83968 kbps, default = 0 = no restriction)
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Impact on Throughput Role of SINR
MIMO + 64QAM requires
Very high SINR > 25 dB
Uncorrelated multi-pathcomponents
From Landre et al., realistic performance
of HSDPA MIMO in macro cell
environment, Orange 2009
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Soc Classification level17 Nokia Siemens Networks RN30083EN30GLA0
Feature ActivationThe following parameters must be set to enabled HSDPAEnabled (WCEL)
HSUPAEnabled (WCEL) MIMOEnabled (WCEL) HSDPA64QAMAllowed (WCEL) FRLCEnabled (RNFC) MIMOWith64QAMUsage (WCEL)
One should pay attention to potentially stronger limits defined with thefollowing parameters MaxBitRateNRTMACDFlow (RNHSPA, 128..83968 kbps, default = 0 = no restriction)
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Soc Classification level18 Nokia Siemens Networks RN30083EN30GLA0
New Counters in RNC
Counter ID Counter name Measurement
M1006C245 RADIO BEARER CONFIGURED FOR MIMO M1006 RRC signalling
M1006C246 RADIO BEARER CONFIGURATION FOR MIMO FAILED M1006 RRC signalling
M1006C247 RADIO BEARER CONFIGURED FOR 64QAM M1006 RRC signalling
M1006C248 RADIO BEARER CONFIGURATION FOR 64QAM FAILED M1006 RRC signalling
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Soc Classification level19 Nokia Siemens Networks RN30083EN30GLA0
HSDPA Enhancements
MIMO and 64 QAM
Dual cell HSDPA with MIMO and 64 QAMHS Cell_FACHDynamic HSDPA BLER
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Soc Classification level20 Nokia Siemens Networks RN30083EN30GLA0
Dual Cell HSDPA + 64QAM + MIMO RU20 and RU30HSDPA RU20 Dual cell available by RAN 1906 AND
64QAM available by RAN 1643 But NOT with MIMO (RAN 1642)
HSDPA RU30
Dual cell AND 64QAM AND MIMO simultaneously availably by RAN 1907
RAN1907 RAN1906 RAN1643= +
RAN1642 +
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Soc Classification level21 Nokia Siemens Networks RN30083EN30GLA0
Software RAN 1642 MIMO RAN 1643 64QAM RAN 1906 Dual cell HSDPA RAN 1912 MIMO + 64QAM RAN 1638 Flexible RLC RAN 1201 Fractional DPCH
Hardware WBTS release 7.0 RAN 1016 / RAN1848 Flexi BTS Multimode System Module (FSME) or
RAN 1671 Enhanced UltraSite BaseBand (EUBB) RAN 1226 HSPA Peak Rate Upgrade for RNC196 and RNC450 or
RAN 2261 Flexible User Plane Capacity in RNC196 and RNC450 NPGE or NPS1 card in RNC
Mandatory Features for DC HSDPA + 64QAM + MIMO
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RAN1907
RAN1643
RAN1906
RAN1912
RAN1671
RAN1016/RAN1848
or
RAN1642
RAN1638 RAN2261
RAN1226
or
Mandatory Features for DC HSDPA + 64QAM + MIMO
RAN1201
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Peak throughput Dual cell HSDPA alone 2 * 14 Mbps = 28 Mbps
Dual cell HSDPA with 64QAM
6 / 4 * 28 Mbps = 42 Mbps Dual cell HSDPA with MIMO 2 * 28 Mbps = 56 Mbps Dual cell HSDPA with 64QAM + MIMO 2 * 42 Mbps = 84 Mbps
UE categories Dual cell HSDPA alone Category 21 + 22 Dual cell HSDPA with 64QAM alone Category 23 + 24 Dual cell HSDPA with MIMO Category 25 + 26 Dual cell HSDPA with 64 QAM + MIMO Category 27 + 28
Peak Throughput and UE Categories
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Peak Throughput and UE Categories
HS- DSCHcategory
max. HS-DSCH Codes Modulation
MIMOsupport
DC-HSDPAsupport
PeakRate
19 15 QPSK/16QAM/64QAM Yes No35.3 Mbps
20 15 QPSK/16QAM/64QAM Yes No42.2 Mbps
21 15 QPSK/16QAM No Yes 23.4 Mbps
22 15 QPSK/16QAM No Yes 28 Mbps
23 15 QPSK/16QAM/64QAM No Yes 35.3 Mbps
24 15 QPSK/16QAM/64QAM No Yes 42.2 Mbps
25 15 QPSK/16QAM Yes Yes 46.7 Mbps
26 15 QPSK/16QAM Yes Yes 56 Mbps
27 15 QPSK/16QAM/64QAM Yes Yes 70.6 Mbps
28 15 QPSK/16QAM/64QAM Yes Yes 84.4 Mbps
Single cell
Dual cell
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Overall Feature ConceptUpgrade steps From SC HSDPA first DC HSDPA for the UE is introduced Once F1 (primary cell) and F2 (secondary serving HS cell) are setup, MIMO SS or DS can be
introduced for UE either on F1 or both on F1 and F2 The MIMO modes SS / DS can be selected for each carrier independently Lastly, if channel conditions allow, 64 QAM can be introduced for the UE
SC HSDPA
DC HSDPA on F1 MIMO SS
DC HSDPA on F2 MIMO DS
MIMO DS
MIMO SS 64 QAM
64 QAM
DC HSDPA Only DC HSDPA + MIMO
F2
F1
DC HSDPA + MIMO + 64 QAM
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Dual Cell ConceptGeneral design To DC HSDPA UEs are assigned HS-DSCHs in the primary serving and secondary
serving high speed cell UL for DC HSDPA UEs transmitted via primary serving cell (no UL in secondary
serving HS cell) Besides HS-DSCH the primary serving cell is carrying
Full set of dedicated and common control channels UL transport channels E-DCH and control channels
Secondary serving HS cell is left clean as far as possible from signaling (maximumHS-DSCH capacity)
Among common channels only CPICH is used E-AGCH, E-RGCH and E-HICH might by existent for dual cell HSUPA
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Dual Cell Concept
Secondary servingHS cell
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Dual Cell ConceptCombination with MIMO HS-DSCH
2 HS-DSCH used, one on each carrier For MIMO on both these carriers For dual stream , 2 transport blocks are sent per TTI on each HS-DSCH (i.e. altogether 4 TBs ) For single stream , 1 transport block is sent per TTI on each HS-DSCH (i.e. altogether 2 TBs )
Virtual antenna concept can be used again to avoid degraded performance for non-MIMO /non-DC HSDPA users in DC HSDPA + MIMO cells
HS-SCCH Each DL carrier has its own HS-SCCH set, allowing separate scheduling between the
carriers in a similar way as for DC HSDPA 3GPP HS-SCCH type 3 used
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Dual Cell Concept
HS-DPCCH
Other common channels likeE-AGCH, E-RGCH, F-DPCH
Other common channels likeE-AGCH, E-RGCH, F-DPCH
UE
BTS
HS-SCCH
HS-SCCH
HS-DSCH
TBS3
TBS4HS-DSCH
TBS1
TBS2
Primary Cell
Secondary Cell
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Dual Cell ConceptCombination with MIMO HS-DPCCH
Feedback information for both DL carriers (primary and secondary) can be carried on singleUL carrier, using a single SF256 channelization code Up to 4 flows of ACK/NACKs have to be transmitted using 10 bits New coding and / or time multiplexing of ACK/NACK, CQI and PCI is required Due to lower redundancy more UE power required, i.e. more UL noise rise introduced
Other common channels E-HICH / E-RGCH E-AGCH F-DPCH All these channels are present in both cells
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Dual Cell Concept
BTS
HS-SCCH
HS-SCCH
HS-DPCCH
TBS1
TBS2HS-DSCH
TBS3
TBS4
Other common channels likeE-AGCH, E-RGCH, F-DPCH
Other common channels likeE-AGCH, E-RGCH, F-DPCH
HS-DSCH
Primary Cell
Secondary Cell
UE
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Impact on Coverage
Huge impact on cellcoverage as compared tonormal HSDPA mode (r =
1)
Small Overhead on HS-DPCCHS-CPICH needed for MIMO
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Impact on Coverage
57 %
10% 20 %
About 57% increase in range for aDC + MIMO cell
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Impact on Capacity
220 %
43 % 52 %
About 220% increase in throughputfor a DC + MIMO cell
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Impact on Capacity
29 %8 % 25 %
About 29% increase in number ofsubscribers for a DC + MIMO cell
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Other Feature Related ParametersDual cell or MIMO preference Dual cell HSDPA and MIMO simultaneously supported by UE, but not offered by the
network Define priority for either dual cell HSDPA or MIMO with DCellVsMIMOPreference
CQI feedback cycle Simultaneous usage of dual cell HSDPA and MIMO doubles the amount of CQI
reports One report is sent for carrier 1, one for carrier 2 (immediately after the report for
carrier 1) The reporting activity thus is higher than intended by the CPC parameters
N10msCQIFeedbackCPC/N2msCQIFeedbackCPC
DCellVsMIMOPreference
RNHSPADual cell HSDPA, MIMODefault = dual cell HSDPA
N10/2msCQIFeedbackCPC
RNHSPA0..160 ms in irregular steps (4..160 ms with DC HSDPA + MIMO)Default = 10/8 ms
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Transition Dual Cell Single CellDual cell or MIMO preference Dual cell HSDPA + MIMO supported for NRT services only
RT RAB shall be established
transition from dual to single cell HSDPA RT RAB released transition from single to dual cell HSDPA possible
SRB on CCH [F1] SRB on DCH [F1] SRB on SC HSPA [F1]
SRB + NRT RAB on DC HSDPA + MIMO [F1, F2]
SRB + NRT RAB + RT/CS RAB on SC HSDPA (F1)
Addition / removalof RT services
DC HSDPA SC HSPA
SC DC HSDPA HSPA
2 nd / 3 rd NRT SRBSetup / release
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New Counters in RNC
Counter ID Counter name Measurement
M1001C709 ACCESS STRATUM RELEASE INDICATOR RELEASE 9 1001 - Service Level
M1001C707 UE SUPPORT FOR HSDSCH CLASS 25 OR 26 1001 - Service Level
M1001C708 UE SUPPORT FOR HSDSCH CLASS 27 OR 28 1001 - Service Level
M1022C223 CHANNEL SWITCH FROM DC-HSDPA TO SC-HSDPA SUCCESSFUL 1022 - Packet Call
M1022C224 CHANNEL SWITCH FROM SC-HSDPA TO DC-HSDPA SUCCESSFUL 1022 - Packet Call
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New Counters in WBTS
Counter ID Counter name Measurement
M5000C424 SUM OF ACTIVE DC HSDPA MIMO USERS WITH TWO CARRIERS M5000 HSPA in WBTS
M5000C425 SUM OF ACTIVE DC HSDPA MIMO USERS WITH ONE CARRIER M5000 HSPA in WBTS
M5000C426 SUM OF CAPABLE DC HSDPA MIMO USERS M5000 HSPA in WBTS
M5000C427 TTI SCHEDULED DC HSDPA MIMO USER FOR PRIMARY CARRIER WITH ONE CARRIERDUAL STREAM M5000 HSPA in WBTS
M5000C428 TTI SCHEDULED DC HSDPA MIMO USER FOR PRIMARY CARRIER WITH ONE CARRIERSINGLE STREAM M5000 HSPA in WBTS
M5000C429 TTI SCHEDULED DC HSDPA MIMO USER FOR SECONDARY CARRIER WITH ONE CARRIERDUAL STREAM M5000 HSPA in WBTS
M5000C430 TTI SCHEDULED DC HSDPA MIMO USER FOR SECONDARY CARRIER WITH ONE CARRIERSINGLE STREAM M5000 HSPA in WBTS
M5000C431 TTI SCHEDULED DC HSDPA MIMO USER WITH BOTH CARRIER DUAL STREAM M5000 HSPA in WBTS
M5000C432 TTI SCHEDULED DC HSDPA MIMO USER WITH BOTH CARRIER DUAL AND SINGLESTREAM M5000 HSPA in WBTS
M5000C433 TTI SCHEDULED DC HSDPA MIMO USER WITH BOTH CARRIER SINGLE AND DUALSTREAM M5000 HSPA in WBTS
M5000C434 TTI SCHEDULED DC HSDPA MIMO USER WITH BOTH CARRIER SINGLE STREAM M5000 HSPA in WBTS
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Soc Classification level41 Nokia Siemens Networks RN30083EN30GLA0
HSDPA Enhancements
MIMO and 64 QAM
Dual cell HSDPA with MIMO and 64 QAMHS Cell_FACHDynamic HSDPA BLER
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Soc Classification level42 Nokia Siemens Networks RN30083EN30GLA0
Cell_FACH RU20 and RU30RU20 Very low capacity available in Cell_FACH state only
32 kbps on DL (FACH, S-CCPCH) 16 kbps on UL (RACH, PRACH) Causes problems in case of applications requiring frequent transmission of small
amount of data High signaling load due to frequent state transitions High battery power consumption for UE Strong occupation of dedicated resources for low total throughput
RU30 HSDPA available in Cell_FACH state, thus much higher capacity of 1.8 Mbps on DL UEs downloading small amount of data need not to enter Cell_DCH any more HSUPA in Cell_FACH NOT available yet
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Mandatory Features for HS Cell_FACH Software
RAN 1638 Flexible RLC on DL RAN 1096 Transport Bearer Tuning (specification of activity factor = average cell rate / peak
rate within transmission network)
Hardware WBTS release 7.0 RAN 1016 / RAN1848 Flexi BTS Multimode System Module (FSME) or
RAN 1671 Enhanced UltraSite BaseBand (EUBB) RAN 1226 HSPA Peak Rate Upgrade for RNC196 and RNC450 or
RAN 2261 Flexible User Plane Capacity in RNC196 and RNC450
RAN1637
RAN1638
RAN1096
RAN1671
RAN1016/RAN1848
or
RAN2261
RAN1226
or
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HS Cell_FACH Concept on DL Channel Mapping All logical channels up to now mapped onto FACH now can be mapped onto HS-
DSCH Even broadcast and paging information can be transmitted via HS-DSCH (to UEs
in Cell_PCH or URA_PCH)
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UEs addressed by H-RNTI as usual Dedicated H-RNTI
For HS UEs in Cell_DCH as usual But also for HS UEs in lower states, if available
Common H-RNTI For all HS UEs of a cell in Cell_FACH not having dedicated H-RNTI These UEs additionally addressed by U-RNTI
CELL_FACHUE observes either commonor dedicated H-RNTI
CELL_PCHUE observes dedicated H-RNTIOr (if dedicated H-RNTI not available)IE "HS-DSCH paging system information"
CELL_DCH
Dedicated H-RNTI
URA_PCHDedicated H-RNTI is not applicableUE observes IE "HS-DSCH paging system information
UE must be allocated a dedicated H-RNTI in CELL_FACH, via RRCConnection Setup / Cell Update ConfirmCommon H-RNTI is only applicable in CELL_FACH
HS Cell_FACH Concept on DL UE Addressing
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HS Cell_FACH Concept on DL TransmissionHS Cell_FACH on DL, but not on UL Low UL performance (RACH used)
No ACK/NACK and CQI sending Blind repetition for HARQ Default CQI value for link adaptation
Mobility based on cell reselection as usual in Cell_FACH
D L : H
S - D S
C H
U L : R
A C HOriginal transmissions
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Feature Activation To enable HS Cell_FACH on the DL, the following settings are required
FRLCEnabled (RNFC) = enabled HSFACHEnabled (WCEL) = enabled
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HS Cell_FACH on DL Power Settings For user data and higher layer signaling same power management as in Cell_DCH
Slow power adjustment for HS-PDSCH due to dynamic share with R99 Fast CQI based power control for HS-SCCH
If BCCH information shall be transmitted via HS-DSCH, the power for both HS-PDSCH and HS-SCCH is fixed relative to CPICH
Parameter PtxBCCHHSPDSCH for HS-PDSCH Parameter PtxBCCHHSSCCH for HS-SCCH
PtxBCCHHSPDSCH
WCEL
-35..15 dB in steps of 0.1 dB
Default 7 dB above CPICH
PtxBCCHHSSCCH
WCEL
-35..15 dB in steps of 0.1 dBDefault 2 dB below CPICH
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Bit Cause Bit Cause
0 Originating conversational call 11 Inter-RAT cell change order
1 Originating streaming call 12 Registration
2 Originating interactive call 13 Detach
3 Originating background call 14 Originating high priority signalling
4 Originating subscribed traffic call 15 Originating low priority signalling
5 Terminating conversational call 16 Call re-establishment
6 Terminating streaming call 17 Terminating high priority signalling
7 Terminating interactive call 18 Terminating low priority signalling
8 Terminating background call 19 Terminating cause unknown
9 Emergency call (always 0) 20 MBMS reception
10 Inter-RAT cell re-selection 21 MBMS ptp RB request
Access causes in green prefer Cell_FACH Access causes in black prefer Cell_DCH
One can select by 22 bit parameter HSFACHRel7ConSetupEC for which RRCestablishment cause HS Cell_FACH or HS Cell_DCH is preferred
HS Cell_FACH on DL Channel Type Selection
HSFACHRel7ConSetupECWCEL
0,1 for each RRC establishment cause
Default 0001101111110110001100
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The preferred channel type is offered until no resources on it are available FACH overload according the parameters FachLoadThresholdCCH and
PtxThresholdCCH Prevents Cell_FACH for R99 users only (S-CCPCH) But not for HS users (HS-PDSCH)
HS Cell_FACH on DL Channel Type Selection
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Transition from Cell_FACH to Cell_DCH triggered by high activity on the link Huge amount of data in RLC buffer or High average data rate
High activity due to RLC buffer indicated, if Amount of data > HSFACHVolThrDL at least during the time HSFACHTimeTrigger
HS Cell_FACH on DL Transition to Cell_DCH
Time
HSFACHVolThrDLWCEL0,8,16,32..2048 ByteDefault 256 Byte
HSFACHTimeTrigger RNPS0..5000 ms with irregularstepsDefault 0 ms
Data in RLC buffer
Capacity requestgenerated
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High activity due to data rate indicated if Average data rate > HSFACHActivityThr at least during the time
HSFACHActTimeToTrigger
The data rate is averaged on basis of a sliding window configured byHSFACHActivityAveWin and updated with each packet sent to the UE
HS Cell_FACH on DL Transition to Cell_DCH
HSFACHActivityThr WCEL8..1024 Kbps in steps of 8 KbpsDefault 128 Kbps
Time
HSFACHActTimeToTrigger WCEL0..5000 ms with irregular stepsDefault 0 ms
Data rate
Capacity requestgenerated
HSFACHActivityAveWinWCEL0.2..5 s in steps of 0.2 sDefault 0.2 s
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HS Cell_FACH on DL NodeB Scheduling NodeB scheduling done by the same way as in Cell_DCH HS Cell_FACH and Cell_DCH users treated by same NodeB scheduler
Scheduling priority indicator set for HS Cell_FACH users by individual parameterPriForHSFACHDTCH
PriForHSFACHDTCH
RNPS
0..11 in steps of 1
Default 0
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New RNC Counters
Counter ID Counter name MeasurementM1001C705 UE SUPPORT FOR HS CELL_FACH M1001 Service Level
M1006C213 SUM OF UE OPERATING TIME IN ENHANCED CELL_FACH M1006 RRC signalingM1006C214 NUM OF UE MEASURED IN ENHANCED CELL_FACH M1006 RRC signalingM1006C215 CELL_DCH TO ENHANCED CELL_FACH ATTEMPTS M1006 RRC signaling
M1006C216 CELL_DCH TO ENHANCED CELL_FACH SUCCESSFUL M1006 RRC signaling
M1006C217 ENHANCED CELL_FACH TO CELL_DCH ATTEMPTS M1006 RRC signaling
M1006C218 ENHANCED CELL_FACH TO CELL_DCH SUCCESSFUL M1006 RRC signaling
M1006C219 CELL_PCH TO ENHANCED CELL_FACH ATTEMPTS M1006 RRC signaling
M1006C220 CELL_PCH TO ENHANCED CELL_FACH SUCCESSFUL M1006 RRC signaling
M1006C221 ENHANCED CELL_FACH TO CELL_PCH ATTEMPTS M1006 RRC signaling
M1006C222 ENHANCED CELL_FACH TO CELL_PCH SUCCESSFUL M1006 RRC signaling
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HSDPA Enhancements
MIMO and 64 QAM
Dual cell HSDPA with MIMO and 64 QAMHS Cell_FACHDynamic HSDPA BLER
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HSDPA BLER Target RU20 and RU30RU20 Non configurable BLER target , independent on the CQI
10% for static channel 25% for fading channel
RU30 BLER target configurable , in dependence on
fading CQI
With lower BLER target under good conditions up to 8 % more throughput can beachieved
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Mandatory Features for Dynamic HSDPA BLER Target Software
No specific requirements except basic HSDPA
Hardware WBTS Rel.7 RAN 1016 / RAN 1848 Flexi BTS Multimode System Module ( FSME ) OR RAN 1671 Enhanced UltraSite BaseBand ( EUBB )
RAN2171
RAN 1671
RAN 1016/RAN1848
or
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CQI Ranges BLER target settings can be done in dependence on the CQI
Low range reported CQI < medCQIRangeStart Intermediate range medCQIRangeStart Reported CQI < highCQIRangeStart High range highCQIRangeStart Reported CQI
The CQI ranges are defined by NodeB commissioning parameters
medCQIRangeStartBTSSCW1..30 with steps of 1Default = 12
highCQIRangeStartBTSSCW1..30 with steps of 1Default = 25
L o w C Q I Intermediate CQI High CQI
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Fading Scenarios BLER target settings can be done in dependence on fading The amount of fading is expressed by the variance of the CQI
Static channel Variance < 1 Weak fading 1 < Variance < 1.5 Intermediate fading 1.5 < Variance < 2.5 Strong fading Variance > 2.5
The fading scenarios are non configurable BLER targets can be set for the most extreme fading scenarios only
Static channel Strong fading
For the other fading scenarios the BLER targets still are non configurable Weak fading BLER target = 6% Intermediate fading BLER target = 10%
Static BLER target conf igur able
Default = 2-6 %
Weak fading BLER target
= 6%
Intermediate fading BLER target
= 10%
Strong fading
BLER targetconfigurable
Default = 25%
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BLER Targets Altogether 6 NodeB commissioning parameters
3 parameters for static channel and low / intermediate / high CQI 3 parameters for strong fading and low / intermediate / high CQI For each parameter there are the four possible settings 2% / 6% / 10% / 25%
Variance ofReported CQI
Low CQI Range Medium CQI Range High CQI Range
0 to 1 TargetBLERLowCQIStaCH TargetBLERMedCQIStaCH TargetBLERHighCQIStaCH1 to 1.5 6% 6% 6%
1.5 to 2.5 10% 10% 10%
>2.5 TargetBLERLowCQIFadCH TargetBLERMedCQIFadCH TargetBLERHighCQIFadCH
TargetBLERLow/Med/HighCQIStaCHBTSSCW2% / 6% / 10% / 25%Default = 6% / 2% / 2%
TargetBLERLow/Med/HighCQIFadCHBTSSCW2% / 6% / 10% / 25%Default = 25% / 25% / 25%
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BLER Targets With RU20 10% under best fading conditions With RU30 2% under best fading and intermediate / good CQI conditions
10% - 2% = 8% gain for throughput achievable
Variance ofReported CQI
Low C QI Range Medium CQI Range High CQI Range
0 to 1 6% 2% 2%1 to 1.5 6% 6% 6%
1.5 to 2.5 10% 10% 10%
>2.5 25% 25% 25%
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