huawei ran features and parameters in ran5.1 & ran6.0 & hsupa
TRANSCRIPT
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Apr. 2006
Node B Products of Huawei
Mar 2007
Huawei RANFeatures & Parameters
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
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HUAWEI TECHNOLOGIES Co., Ltd. HUAWEI Confidential Page 2
Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
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Overview of Packet Scheduling
nPurpose: Scheduling the limited resources between NRT users
Optimize the utilization of system resources
Improve the throughput of the system
nMethods:
RAB to RB mapping Bit rate switching (DCCC, DCH only)
! TVM (Traffic Volume Measurement) based bit rate switching
! Coverage based bit rate switching
! Load based bit rate reduction
RRC state switching
Packet scheduling of HSDPA
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RAB-to-RB Mapping
TVM based Bit Rate Switching
Coverage based Bit Rate Switching
RRC State Switching
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Objective of RAB-to-RB Mapping
Objective:
RB parameters configuration according to QoS of the requested RAB
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RB Mapping Criteria and Contents
Criteria:
UE capabilities complied
Efficiently make use of the limited radio resources
Guarantee QoS requirement
Contents:
Channel type selection
RB parameter configuration
Interactive
Conversat ional
Streaming Mapping RB on DCH
RB on HS-DSCH
RB on CCHBackground
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Channel Type Mapping
BackgroundDCH or CCH or HS-DSCH
Interactive
DCH or HS-DSCHStreaming
DCHConversational
PS
StreamingDCH
ConversationalCS
DCH or CCH Signaling
Transport ChannelTraffic ClassDomain
SET FRC
SET
CORRMALGOSWITCH
SET FRC
SET FRC
MML command
OFFPS_STREAMING_ON_HSDP
A_SWITCH
PS_STREAMING_ON_HSDPA_SWITCH
8 kbpsDlBeTraffThsOnHsdpaDL BE traffic threshold on HSDPA
128 kbpsDlStrThsonHsdpaDL streaming threshold on HSDPA
8 kbpsDlBeTraffDecThs
UlBeTraffDecThs
DL BE traffic DCH decision threshold
UL BE traffic DCH decision threshold
Default valueParameter IDParameter name
nMain parameters:
nMapping principle:
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Channel Parameter Configuration
60 msMACHST1MAC-hs T1 timer
FalseMACHSDISCARDTIMEOPTMAC-hs Discard timer
option
336 bitMACDPDUSIZEMAC-d Pdu size
Service specificTransmit window and receive window
Poll parameters at the Sender
Status reporting parameters at the receiver
Reset parameters
Delivery order
AM parameters
ADD/MOD
TYPRABMACHS
ADD/MOD
TYPRABRLC
MML command
Service specificRLC discard mode selectionUM parameters
Service specificRLC segment indicationTM parameters
16MACHSWINSIZEMAC-hs window size
Service specificExplicit-ind slide RX window timing
Explicit-ind SDU discard timing
Discard PDU max TX
Discard Parameters
Default valueMain Parameter/Parameter IDParameter Group
nMain Channel Parameters:
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RAB-to-RB mapping
TVM based Bit Rate Switching
Coverage based Bit Rate Switching
RRC State Switching
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Traffic Volume Measurement (TVM)
Taffic Volume < Th
TVM 4B
THRESHOLDThreshold
Time
Transport channeltraffic volume
Event 4b
Event 4b
Timer to Trigger
Taffic Volume > Th
TVM 4A
THRESHOLD
Threshold
Time
Transport channeltraffic volume
Event 4a Event 4a
Pending time after t riggered
ADD TYPRABDCCCMC
Traffic Volume:
RLC Buffer Occupancy: the amount of data in
number of bytes that is available for transmission
and retransmission
nAlgorithm parameters:
Timer to Trigger:
Indicates the period of time during which the event
condition has to be satisfied, before sending a
Measurement Report
Default value: 240/5000 ms (4A/4B)
Pending time after trigger:
Indicates the period of time during which it is
forbidden to send any new measurement reports
Default value: 4000/4000 ms (4A/4B)
TRAFFIC MEASUREMENT EVENT THRESHOLD
Indicates the threshold to trigger Event 4A/4B.
Default value: 1024/64 byte (4A/4B)
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Bit Rate Switching based on TVM report
Uplink
Rate
Time
Upl ink mid bi trate
Upl ink bi trate threshold for DCCC
Event 4b
The highest rate
Allocated rate
Event 4b Event 4a Event 4a
Adjust
level =3
Adjust
level =2
Bit rate up-switchBit rate down-switch
Uplink Rate adjust level
Range: 2 or 3
Default value: 2
Uplink B it rate thresho ld for DCCC
Range: 8 ~ 384kbps
Default value: 64 kbps
SET DCCC
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Bit Rate Switching based on TVM Report
Downlink
Down l ink Rate adjust level
Range: 2 or 3
Default value: 2
Downl ink Bi t rate threshold for DCCC
Range: 8 ~ 384kbps
Default value: 64 kbps
SET DCCC
Adjust
level =3
Adjust
level =2
Maximum bit rate
Bit rate up-switchBit rate down-switch
Rate
Time
Downl ink mid bit ra te threshold
Downl ink bi t ra te threshold for DCCC
Event 4b
The highest rate
Allocated rate
Event 4a Event 4aEvent 4b
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Summary: TVM based Bit Rate Switching
n Improve the utilization of:
! Base station transmission Power
! Channelization codes
! Iub transmission resourcesRate
Traffic Volume
with bit bit rate switching
without bit rate switching
Time
Source Rate
Dynamic Channel
Configuration
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RAB-to-RB mapping
TVM based Bit Rate Switching
Coverage based Bit Rate Switching
RRC State Switching
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Coverage based Bit Rate Switching
nObject:
- Avoid call drop due to power limitation
- Guarantee QoS perceived by user
n Indicator of Coverage:
- Downlink Transmitted Code Power
- RLC data retransmission
data of 144kbps
data of 384kbps
voice
data of 64 kbps
BS !BS
distance
transmit rate
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Transmitted Code Power Measurement
EVENT F HYSTERESIS TIME
Event F repor t ing p ower margin
EVENT E HYSTERESIS TIME
Event Eb relat ive threshold
Event E repor t ing per iod
Event F repor t ing per iod
Event Ea relat ive thresho ld
SET DCCC
Power T1=Measurement Hysteresis Time
MeasurementThreshold 1
Measurement
Threshold 2
T1
T1
T1
Ea Eb EaPeriodicreports
Time
Power T1= Measurement Hysteresis Time
Measurement
Threshold 2
Measurement
Threshold 1
T1
T1
T1
Fa Fb FaPeriodic
reports
Time Note:
Absolute threshold of Event E=
maximum DL Power - comparative threshold + PO3
n Measurement:
- Event Triggered (Ea/Eb/Fa/Fb)
- Periodic reported after Ea is triggered
n Algorithm parameters:
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RLC Retransmission Monitor
RE-TX monitor period
EVENT A PENDING TIME AFTER TRIGGER
EVENT A TIME TO TRIGGER
RE-TX MEASURE FILTER COEF
Event A threshold
ADD TYPRABRLC
Time-to-trigger Perding time after trigger
Time-to-trigger
Event A threshold
Time
Reporting event A
RLC Retransmission rate
nMeasurement:
- RLC PDU retransmission rate is calculated through ACK and NACK feedback- Event A triggered when the retransmission number > threshold
- Reported from Layer 2 to Layer 3 within RNC
RLC_RETRANS_MEASURE_SWITCH
SET CORRMALGOSWITCH
n Algorithm parameters:
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Bit Rate Switching based on Coverage
Rate
Time
Event Ea
and Event A
Allocated rate
Event Ea
and Event A
Downl ink mid bit rate threshold
Downlink B E guarantee bitrate
The highest rate
If RLC retransmission measurement is switched on:
- Rate down switching is performed only when both Event Ea AND Event A are
fulfilled
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RAB-to-RB mapping
TVM based Bit Rate Switching
Coverage based Bit Rate Switching
RRC State Switching
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DCCC - Channel Transition
Channel Transition
URA_PCHCELL_DCH
CELL_FACH CELL_PCH
Event 4b/Timer Event 4b/Timer Event 4aEvent 4a
Event 4b/Timer Event 4b/Timer
Cell reselection
Timer/COUNTER
Cell reselection
Timer/COUNTER
Paging/DataPaging/Data
Paging/DataPaging/Data
Traffic Volume Report from UE, Event 4a and Event 4b
- Event 4a: Traffic volume is above a threshold -> High active- Event 4b: Traffic volumes is below a threshold during a configurable time -> Low active
Cell re-selection:- If number of cell reselections exceeds pre-define counters within the cell reselection timer, the UE is
considered to be in the state of frequent cell reselection
Paging/Data:
- There is data to be transferred
UE activity
SET UESTATETRANSBE DCH to FACH to PCH 4B thd
BE DCH to FACH 4B time to trigger
BE DCH to FACH 4B Pending Time
DCH to FACH transition timer
BE FACH TO DCH 4A threshold
FACH to PCH 4B time to trigger
FACH to PCH 4B Pending Time
FACH to PCH transition timer
CELL RESELECTION TIMER
CELL RESELECTION COUNTER
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Summary - Packet Scheduling
Channel TransitionChannel Transition
CELL-DCH to/from CELL-FACH
CELL-FACH to/from CELL-PCH
CELL-PCH to/from URA-PCH
Rate SwitchingRate Switching
Downlink rate up-switch
Downlink rate down-switch
Uplink rate up-switch
Uplink rate down-switch
UE downlink activity (TVM)
Downlink Quality
UE uplink activity (TVM)
UE activity (TVM)
Trigger Act ion
! Optimize available resources for Best Effort Service
! Allocation resources dynamically to increase resource utilisation
! Prevent from call drop for users with high data rate service on the cell boarder
UE activity (Cell Reselection)
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Packet Scheduling - Parameters Structure
RNC
RadioClass
GlobalParaClass CellClass
TYPRABBASIC.Class
TYPRABDCCCMC.Class
TYPRABRLC.Class
DCCC.Class
CELLDCCC.ClassUESTATETRANS.Class
RAB&SRBClass
DCCC strategy
Upl ink bit rate threshold for DCCC
Uplink mid bite rate calculate method
Upl ink mid bitrate threshold
Upl ink Rate adjust level
Downl ink b it rate threshold for DCCC
Downlink m id bite rate calculate method
Downl ink mid bitrate threshold
Downl ink B E guarantee bitrate
Event F hysteresis t ime
Report ing per iod unit for event F
Event F report ing per iod[ms]
Event F report ing per iod[m in]
Event Ea relat ive threshold
Event Eb relat ive threshold
Event E hysteresis t ime
Report ing per iod unit for event E
Event E report ing per iod[ms]
Event E report ing per iod[min]
GlobalParaClassUESTATETRANS.Class DCCC.Class
DCH to FACH transit ion t imer
BE HS-DSCH to FACH transit ion t imer
Realtime Traff DCH to FACH transit ion timer
FACH to PCH transit ion t imer
Cel l reselect ion t imer
Cel l reselect ion co unter
BE FACH to DCH 4A threshold
BE FACH to HS-DSCH 4A thresho ld
Realt ime Traff DCH to FACH 4B threshold
Downl ink Rate adjust level
CellClass
CELLDCCC.Class
Downl ink B E guaran tee b i t ra te
Event F hys te res is t ime
Repor t ing per iod un i t fo r event F
Event F repor t ing per iod [ms ]
Event F repor t ing per iod [m in ]
Event E hys te res is t ime
Repor t ing per iod un i t fo r event E
Event E repor t ing per iod [ms]
Event E repor t ing per iod [m in ]
Direct ion
Traf fi c Measurement Event 4B threshold
Traf fi c Measurement Event 4A threshold
T ime to t r igger 4B
T ime to t r igger 4A
Pending t ime af ter t r igger 4B
Pending t ime af ter t r igger 4A
4B measurement repor t moni tor t ime
re-TX mon i tor per iod
re-TX measure f i l ter coef
Event A threshold
Event A t ime to t r igger
Event A pending t ime af ter t r igger
RAB&SRBClass
TYPRABBASIC.ClassTYPRABDCCCMC.Class TYPRABRLC.Class
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Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
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Coverage based Rate Mode Control
n Improve the coverageperformance
n Guarantee the speech
quality
7.95K
12.2K
4.75K
Extending
coverage
Experiment 1a - Test Res ults
1.0
2.0
3.0
4.0
5.0
Cond i t i ons
M OS
EFR12.210.27.957.46.7
5.95.154.75
EFR 4.01 4.01 3.65 3.05 1.53
12.2 4.01 4.06 4.13 3.93 3.44 1.46
10.2 4.06 3.96 4.05 3.80 2.04
7.95 3.91 4.01 4.08 3.96 3.26 1.43
7.4 3.83 3.94 3.98 3.84 3.11 1.39
6.7 3.77 3.80 3.86 3.29 1.87
5.9 3.72 3.69 3.59 2.20
5.15 3.50 3.58 3.44 2.43
4.75 3.50 3.52 3.43 2.66
No Errors C/I=16 dB C/I=13 dB C/I=10 dB C/I= 7 dB C/I= 4 dB C/I= 1 dB
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UE Tx Power Measurement
UL UE Tx Power Measurement
n Measurement
Thresholds 6A1/6B1,
6A2/6B2
n Event report
Reporting
event 6A2
Reporting
event 6B2
Reporting
event 6A1
Reporting
event 6B1
Time
Tx power
threshold 6B1
Tx power
threshold 6A2
Tx powerthreshold 6B2
UE Tx power
Tx power
threshold 6A1 Delta_6b1
Delta_6a2
Delta_6b2
Delta_6a1
↓: represents the decrease in the permitted maximum codec mode.
↑: represents the increase in the permitted maximum codec mode.
→: represents that the current permitted maximum codec mode is kept.
Start↑6B2
Stop↑ or → (decided by timer)6A2
Stop↓ or → (decided by timer)6B1
Start↓6A1
Ul_Rate_adjust_timerPermitted Highest AMR Codec ModeEvent
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Transmitted Code Power Measurement
T x P o w e r
t h r e s h o l d E 1
T x P o w e r
t h r e s h o l d E 2
T x P o w e r
t h r e s h o l d F 2
T x P o w e r
t h r e s h o l d F 1
D L D P D C H T x P o w e r M a x im u m D L D P D C H P o w e r
T im e
D e l t a _ E 1 D e l t a _ E 2 D e l t a _ F 2 D e l t a _ F 1
R a t e - D o w n N o r m a l R a t e - U p N o r m a l
DL TCP Measurement
n Measurement
Thresholds E1/E2,
F1/F2
n Periodical
report
↓: represents the decrease in the permitted maximum codec mode.
↑: represents the increase in the permitted maximum codec mode.
→: represents that the current permitted maximum codec mode is kept.
↑↑↑DPDCH power < F1
↑→→F1 " DPDCH power < F2
→→→F2
"DPDCH power
"E2
→↓→E2 < DPDCH power " E1
↓↓↓DPDCH power > E1
Rate_UpRate_DownNormalDPDCH Power
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Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
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Power Control Overview
Open-loop Power Contro lOpen-loop Power Contro lUL Open-loop Power Control
DL Open-loop Power Control
UL Inner-loop Power Control
DL Inner-loop Power Control
Act ion
Inner-loop Power Contro lInner-loop Power Contro l
Outer-loop Power ControlOuter-loop Power Control
Downlink Power BalanceDownlink Power Balance
Make a rough estimation of path
loss by means of a downlin k signal,
and then to provid e a coarse initial
power setting
Fast closed-loop power contro l to
control the transmit power
according t o the RX SIR of the peer
end, to compensate the fading ofradio links
UL Outer-loop Power Control
DL Outer-loop Power Control
Maintain the commun ication
quality at the level required by the
service bearer through adjustment
of the SIR target
Reduce the power drift between
links during the soft handover
Purpose
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Open Loop Power Control
Inner Loop Power Control
Outer Loop Power Control
Downlink Power Balancing
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Open Loop Power Control
Objective
n For each UE, before accessing the network, and for each base station whenRL is set up, estimate the initial UL / DL transmit power based on the
downlink path loss calculation
Content
n Uplink Open Loop Power Control for PARCH
n Uplink Open Loop Power Control for UL DPCCH
n Downlink Open Loop Power Control for DL DPCCH
Node BUE
PRACH
BCH: CPICH channel power
UL interference levelDCHDCH
CPICH Ec/IoRACH measurement report
Node B
UE
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Uplink Open-loop Power Control on PRACH
BCH :
!CPICH channel power
! UL interference level
!Measure CPICH_RSCP
!Determine the initial transmitted power
RACH
Power increase step
Max preamble ret ransmission
PRACHUUPARAS.Class
PRACHBASIC.Class
Constan t value for calculat ing ini t ial TX power
Preambles Message
Control Part
Data Part
Power offset Power inc rease step
AICH ACK
Max allowedUE UL TX
power
Pini
Max preamble loop
Random b ack-of f lower
l imi t
Random back -of f upper l imi t
RACH.Clsass
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Uplink Open-loop Power Control on DPCCH
DPCCH Pow er Offset
CPICH RSCP
Node B
UE
DPDCHNo data on DPDCH
PC Preamble SRB Delay
DPCCH_Initial_Power =
DPCCH_Power_Offset -
CPICH_RSCP
Various power differences between DPDCH and
DPCCH are defined through gain factors, called
c for DPCCH and d for DPDCH
DPCCH_Power_Offset = PCPICH TRANSMIT
POWER + UL interference + CONSTANT
VALUE CONFIGURED BY DEFAULT
Reference BetaC
Reference BetaD
TYPSRBBASIC.Class
TYPSRB.Class
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Open Loop Power Control
Inner Loop Power Control
Outer Loop Power Control
Downlink Power Balancing
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Uplink Inner-loop Power Control
TPC
SIR estimation and
compare with SIR target
SIR target
NodeB
1500 Hz
UE
UL closed loop power control step size
-- 1 or 2 dB
Power control algori thm selection
-- ALGORITHM1, ALGORITHM2
UL Inner-loop Power Control
Power control algori thm selection
UL closed loop pow er control step size
FRC.Class
PCA1: UE adjusts uplink transmit power for each slot; the step
of PCA1 should be 1dB or 2dB by UL CLOSED LOOP POWER
CONTROL STEP SIZE parameter.
PCA2: The UE adjusts the uplink transmit power for each 5-slot
cycle and the step is 1 dB fixedly.
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Downlink Inner-loop Power Control
TPCSIR estimation and
compare with SIR target
SIR target
NodeB
1500 Hz
UE
DL Inner-loop Power Control
DL power control mode
FRC.Class
FDD DL power control step size
DPC_MODE = 0The UE sends a unique TPC command in each slot and the TPC
command generated is transmitted in the first available TPC field in the
uplink DPCCH.
DPC_MODE = 1
The UE repeats the same TPC command over 3 slots and the new TPC
command is transmitted such that there is a new command at the
beginning of the frame .
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Open Loop Power Control
Inner Loop Power Control
Outer Loop Power Control
Downlink Power Balancing
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Page 37
Outer-loop Power Control
Node B UE
Sent TPC command
SIR measurementand comparing
Inner-loop
SIR target setting
BLER measurement
Outer-loop
RNC
Comparing
BLERtarget setting
Objective:! Keep the quality of communication at the
required level by setting the SIR target for the
fast power control
BLER target value
SIR adjustment step
Maximum SIR increase step
Maximum SIR decrease step
Maximum SIR target
Minimum SIR target
TYPSRBOLPC.Class
TYPRABOLPC.Class
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Mechanism of OLPC
N
N2N1
N: TTI number of SIR adjustment period
N1 TTI number of non DTX period
N2 TTI number of DTX period
N
N1"
N2
#Mechanism:
- Single RAB
> OLPC based on B LER
> OLPC based o n DPCCH BER (N1=0, N2$0)
- Multiple RABs
> SIR target decrease only when all TrCHs request to decrease its SIRtar
"If any one of the services requires to increase the SIR target, the maximum value is
used for the adjustment.
" If all the services require to reduce the SIR target, the minimum value is used for the
adjustment.
> Signaling DCH is involved in OLPC
> Guarantee QoS of al l TrCHs
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Open Loop Power Control
Inner Loop Power Control
Outer Loop Power Control
Downlink Power Balancing
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Downlink Power Balance
SRNC
Node B
UE
P ref = (RATIO FOR MAX POWER ) / 100 * (Pmax-Pcpich)
+ (1- RATIO FOR MAX POWER / 100) * (Pmin - Pcpich)
DPB.Class
DPB measurement repor t per iod
DPB measurem ent f i l ter coeff icient
DPB tr igger ing threshold
DPB stop threshold
Rat io for m ax power
DPB adjustmen t rat io
DPB adjustment per iod
Max DPB adjus tment step
After starting power balancing, the RNC calculates the UE DL
reference power Pref and sends the Pref to the NodeB by the
DOWNLINK POWER CONTROL REQUEST message
Objective:
n To reduce the power drift between links of different NodeB.
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Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
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Overview
Intelligent Admission Control
Intelligent Congestion Control
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Load Control exists in all phases
Load Control is used to keep system stable, maximize system capacity while
ensuring the coverage and QoS.
Different load control algorithms according to different phases provided:
- Before UE access: Potential User Control (PUC)
- During UE access: Call Admission Check (CAC) and Intelligent Access Control (IAC)
- After UE access: Load Reshuffling (LDR), and Overload Control (OLC)
3. After UE access2. During UE access1. Before UE access
Time
! LDRCACPUC! OLC
!
! IAC
PUC: Potential User Control CAC: Call Admission Control
IAC: Intelligent Admission Control LDR: Load Reshuffling
OLC: Overload Control
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Load Control for different load level
Load control isunneeded PUC starts: to enable UEs in idle mode to camp on cells with light load
CAC: to prevent new calls into cells with heavy load
ICAC: to increase the access success rate
LDR starts: to check and release basic congestion in cells
Tx power
Uplink noise
Cell load (number of subscribers)
OLC starts: to reduce the cell load
Icons for different load levels
Overload congestion occurs
Basic congestion occurs
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Priority Definition in Huawei Implementation
Priority Consideration
Conversational -> Streaming -> Interactive -> BackgroundTraffic Class
ARP ARP1 -> ARP2 -> ARP3 # -> ARP14
THP THP1 -> THP2 -> THP3 # -> THP14
RAB Integrate Prior i ty Strategy: TC top-priority or ARP top-priority
- For the same TC and ARP
!For Interactive with the same ARP, priority is determined by THP.
- Ind icator o f Carr ier Type Prior i ty to control the priority between R99
and HSDPA.
Bear Type HS-DSCH or DCH THP is provided in
RAN6.0.
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Priority Definition - example
3
3
THP
HSDPABackground2E
DCHStreaming2F
DCHBackground2D
DCHConversational2C
HSDPAInteractive1B
DCHInteractive1 A
Bear TypeTraffic Class ARPRAB ID
Services with different ARP/TC/THP/Bear
ARP is the top-priority, and HSDPA over DCH
TC is the top-priority, and HSDPA over DCH
3
3
THP
HSDPABackground2E
DCHBackground2D
DCHStreaming2F
DCHConversational2C
DCHInteractive1 A
HSDPAInteractive1B
Bear TypeTraffic Class ARPRANK
Background
Background
Interactive
Interactive
Streaming
Conversational
Traffic Class
3
3
THP
HSDPA2E
DCH2D
DCH1 A
HSDPA1B
DCH2F
DCH2C
Bear Type ARPRANK
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Priority Definition in Huawei Implementation
User Prior i ty
33332222211111ERRORUser
Priority
14131211109876543210ARP
User Integrate Prior i ty :
- For multiple-RAB users, determined by the service with the highest
RAB Integrate Prior i ty .
User Prior i ty :
$ Gold (1)
$ Silver (2)
$ Bronze (3)
Typical Mapping of ARP! and User Priority!
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GBR Configuration in Huawei Implementation
For R99 I/B services
ü Upl ink BE Guarantee Bitrate and Down l ink BE Guarantee Bitrate are configurablerespectively per cell.
ü Upl ink BE Guarantee Bitrate is used in BE downsizing due to uplink cell basic congestion.
ü Downl ink BE Guarantee Bitrate is used in BE downsizing due to downlink coverage and
downlink cell basic congestion.
For R99 and HSDPA RT services
ü GBR is in accordance with the requested guaranteed bit rate in RAB parameters.
For HSDPA I/B services
ü Different GBRs are configured for Gold/Silver/Copper user.
64kbps64kbps64kbpsDownlink
64kbps64kbps64kbpsUplink
Copper Silver Gold
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Scheduling Priority used in HSDPA
23
52
81
Background
23~153
323
413
53~152
622
712
83~151
921
1011
Interactive
123
132
141
Streaming
SPITHPARPTraffic class
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Overview
Intelligent Admission Control
Intelligent Congestion Control
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Overview
Resource Admission Check
Rate Negotiation
Pre-emption / Queuing
Direct Retry / Re-direction
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Intelligent Admission Control Overview
Preemption
Queuing
DRD
Admission
algorithm
Succeeded
Failed
Failed or not
supported
Failed or not
supported
Service requestdenied
Service requestadmitted
Failed
Succ-
eeded
Succ-
eeded
Succ-
eeded
FailedSucc-
eeded
Failed
Succeeded Succeeded
RAB processing
RRC connection processing
Iu Qos Negotiation
algorithm switch
UE capability
RAB establishment
RAB modification
Inbound relocation
Ratereconfiguration
hard handover
Cell load
information list LIT
Scenario
LDM CRM Others
DCCC
algorithm switch
Rate
negotiation
PS domain:maximum rate
negotiation
PS and CS
domains:
initial rate
negotiation
PS domain BEservice:
target rate
negotiation
Load admission
Code resource
admission
Iub resource
admission
Credit resource
admission
FailedRRC connectionrequest
Admissionalgorithm
DRD Redirection
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Resource Admission Check Overview
Maximum user number per Cell /
NodeB
For
HSDPA/HSUPA
1. DL ChannelizationCode
2. Radio Resource: Power /
Interference
3. Credit: Resource
4. Iub transmission bandwidth
Resources to
check
Make decision whether to admit
new users or service upgrade
according to the available system
resources.
Procedure
Users in connected mode Af fected users
Admission request
Code resource
based admission?
Credit resource
based admission?
Iub resourcebased admission?
Resource admission passed
Power resource
based admission?
Yes
Yes
Yes
Yes
Yes
Resource admission denied
No
No
No
No
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Overview
Resource Admission Check
! Radio Resource
! Code Resource
! Iub Bandwidth
! NodeB CE
Rate Negotiation
Pre-emption / Queuing
Direct Retry / Re-direction
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Admission Check of Radio Resource
n UL and DL independently
n On the basis of TCP / RTWP
n On the basis of equivalent user number
Request initiation
Uplink calladmission desicion
Admitted?
Downlink calladmission desicion
Admitted?
Request admitted Request rejected
End
No
No
Yes
Yes
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Admission Algorithm Selection
Algorithm 1: based on TCP/RTWP measurement and load increment estimation
Downlink:
Load level definition: TCP (Transmitted Carrier Power)
Uplink:
Load level definition: load factor
Load increment of the new request is taken into consideration.
Algorithm 2: based on static Equivalent Number of Users calculation
Standard user: 12.2kbps AMR with active factor 100%.
Algorithm 3: based on current TCP/RTWP measurementBased on TCP/RTWP measurement;
Load increment of the new request is not taken into consideration
RTWP
P N UL −= 1η
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Uplink Admission Algorithm 1 & 3
)/( No Ec Fun=∆η
Uplink admission control request
Get measured RTWP and calculate
the current uplink load factor.
Calculate the increment of the
uplink load due to the request.
Get the predicted uplink load
factor.
RTWP
P N UL
−=1η
LU UL predicted UL ηηη ∆+=
,
Compare the predicted value with
admission threshold! Increment is always
equal to ZERO when
algorithm 3 is applied
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Downlink Admission Algorithm 1&3
)/ _ ,/( No EcCPICH No Ec Fun P =∆
Downlink admission control request
Get measured current TCP
Calculate the increment of the
downlink powerdue to the request.
Get the predicted downlink totalpower
Compare the predicted power withadmission threshold
TCP
P TCP P ∆+= predicted
! Increment is always
equal to ZERO when
algorithm 3 is applied
( )
−−⋅
⋅−=+∆
++
+ )()1()/ _ (/1
/)1(
1010
10 N P N E CPICH
P
N E
N E N P
N c
CPICH
N c
N c αα #$
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UL & DL Admission Algorithm 2
n Based on ENU (Equivalent Number of User s calculation)
n Standard user:
- 12.2kbps AMR with activity factor 100%
- EUN for standard user: 1
n EUN for non standard user:
- Uplink
- Downlink
( )( )
dard sc
N c
N N E
N E k tan0
10
1+
+ =
( )
( )1
tan1 N
/
11
/11
+
+
+
+=
N oc
dard soc
N E
N E k
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Priority Handling of Admission Check
60%UL threshold of other services
75%UL threshold of Conv non_AMR service
75%UL threshold of Conv AMR service
80%UL Handover access threshold
Default valueParameters
! Threshold for uplink radio resource admission check
75%DL threshold of other services
80%DL threshold of Conv non_AMR service
80%DL threshold of Conv AMR service
85%DL Handover access threshold
Default valueParameters
!Threshold for downlink radio resource admission check
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Overview
Resource Admission Check
! Radio Resource
! Code Resource
! Iub Bandwidth
! NodeB CE
Rate Negotiation
Pre-emption / QueuingDirect Retry / Re-direction
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Code Management
Code management is used to manage the code resource between all the
physical channels, including common channel (CCH) e.g. PCPICH and
PCCPCH, dedicated channel (DPCH), and shared channel (HSDPA).
DPCHCCH
SF=16SF=8
SF=4
HSDPA
nCode for DPCH:
- Dynamically allocated
nCode for common channel:
- Reserved
nCode for HSDPA:- Shared with R99 (Refer to HSDPA part)
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Code Allocation Mechanism
Reserve the codes
with smallest SF to
improve utilization
rate of whole code
tree.
n On the basis of maximum free sub-tree
Less code
fragments
are left
SF=256SF=128 &'(C(256, 0): PCPICH
& 0 )SF=64 * +'(C(256,1): PCCPCH
& 0 )* * &'(C(256, 2): AI CH* + 1 )
SF=32 * +'(C(256, 3): PI CH& 0 )
SF=16 * +'(C(64, 1):SCCPCH& 0 )* * &'(C(128,2):DPCH* * &' 2 )* * * ** + 1 ) +', 3
SF=8 * +',3& 0 )
SF=4 * +',1& 0 )* +',1*+',1
&',2* ( Occupi ed code+',3 , Non-occupied code
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Overview
Resource Admission Check
! Radio Resource
! Code Resource
! Iub Bandwidth
! NodeB CE
Rate Negotiation
Pre-emption / QueuingDirect Retry / Re-direction
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Admission Check of Iub Bandwidth
DPCH Service
Bandwidth consumption:
MBR * Act ive factor
HSDPA Service
Bandwidth consumption:
GBR * Act ive factor 1HSDPA Background
1HSDPA Interactive
1HSDPA Streaming
0.5R99 Background
0.5R99 Interactive
1R99 Streaming
1R99 Conversational (VP)
0.7Telephony (AMR&VOIP)
0.5SRB
NodeB
0.7Common Channels
ScopeActiveFactor
Traffic Class
Configurable
per service type
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Overview
Resource Admission Check
! Radio Resource
! Code Resource
! Iub Bandwidth
! NodeB CE
Rate Negotiation
Pre-emption / QueuingDirect Retry / Re-direction
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Admission Check of NodeB Credit
Admission Check:
Credits of local cell
Credits of local cell group
Credits of NodeB
Credit Consumption Law:
Reported from NodeB
In terms of SF
HSDPA is not involved
20104UL
888DL384 kbps
PS
1058UL
4416DL128 kbpsPS
6316UL
2232DL64 kbps
PS
31.532UL
1164DL32 kbps
PS
6316UL
2232DL64 kbps
VP
2164UL
11128DL12.2
kbps
AMR
2164UL
11128DL13.6
kbps
SRB
21256UL
11256DL3.4 kbps
SRB
Corresponding
Credits Consumed
Number of CEs
Consumed
SFDirectionTraffic
Class
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Overview
Resource Admission Check
Rate Negotiation
Pre-emption / Queuing
Direct Retry / Re-direction
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Rate Negotiation in IAC
!384kbps
!256kbps
!128kbps
!64kbps
!32kbps
UE capabilities
! Physical layer capability
! Transport channel capability
! RLC capability
Maximum allowed bit rate
System load
! Channelization codes
! Iub transmission resources
! Radio resources
Initial data rate / Target data rate
Scenarios: RAB setup%RAB modify, reconfiguration
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Overview
Resource Admission Check
Rate Negotiation
Pre-emption / Queuing
Direct Retry / Re-direction
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Pre-emption and Queuing
Queuing
n Weight based queuing
n Periodically retry
Pre-emption
Low Priority
High
Priority
Integrate Priority considered:
- Traffic Class
- Allocation/Retention Priority
- Bear Type (R99/HSDPA)
- THP (Traffic Handling Priority)
Priority based
Pre-empt
Pqueue = Tmax " Telapsed
- Telapsed: the time which the service request has queued.
- Tmax: the maximum time which the service request can
be in the queue.
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Overview
Resource Admission Check
Rate Negotiation
Pre-emption / Queuing
Direct Retry / Re-direction
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RRC Direct Retry & Re-direction
1 RRC CONNECTION REQUEST2 RRC CONNECTION SETUP3 RRC CONNETION SETUP COMPLETE
RRC DRD is used when UE initiates RRC CONNECTION REQUEST procedure
but is refused by the original cell.
RRC Connection
Direct Retry
RRC Redirection is used to indicate UE to reselect an inter-frequency or GSM
cell if RRC DRD failed.
RRC Connection
Re-direction
Initially campingon cell 1
Freq2
Freq1
Cell2
Resource
apply
1 2
RRC Direct Retrysuccessfully on cell2
3
1 RRC CONNECTION REQUEST2 RRC CONNECTIONREJECT(Redirection info )3# Cell reselection: Inter -freq accessOr 3## Cell reselection: Inter -RAT access
Initially campingon cell 1
Freq2
Freq1
Cell2
Resource
apply
1 2
RRC Re-Direct to Inter-Freq or inter-RAT cell3
Cell2 Inter-RAT Cell1Inter-Freq Cell1
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RAB Direct Retry
RAB DRD is used when UE initiates RAB ASSIGNMENT procedure but is refused
by the original cell and may retry to other cells.
RAB Direct
Retry
Inter-Freq Cell1
1 RAB Assignment (from CN)
2 SRNS relocation (to CN)
3 Handover from UTRAN
4 Handover Complete
Freq2
Freq1
Cell2
1
3
Inter-RAT Cell1
RNC CN
2
4
Cell2
1
2
RNC
3
1 RAB Assignment (from CN)
2 RB SETUP (Freq1)
3 RB SETUP COMPLETE
4 RAB Assignment Resp
4
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Parameters: Intelligent Admission Control
1.PS maximum rate negotiation2.PS & CS initial r ate negotiation
3.PS target rate negot iation
RateNegotiation
1.User priori ty based pre-emption for R992.RAB priority based pre-emption for
HSDPA
Pre-emption
1.RAB priority based queuing.Queue
DRD Switch
1.RRC connection direct retry
2.RRC connection redirection
3.RAB direct retry
DRD
Max Queuing T ime Length
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Overview
Intelligent Admission Control
Intelligent Congestion Control
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Overview
Load Reshuffling
Overload Control
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State of Cell Load (Radio Resource)
L o a d
%
THOLC
100%A
B
C
nOverload Congestion
! Trigger OLC (over load
contro l) to quickly decrease
system load
! Make system stable
nNormal
Ti me
nBasic Congestion
! Trigger LDR (load
reshuff l ing) to make room
for more users to access
system, especial for users
with higher priority
! Avoid load congestion
THCAC
THLDR
I t lli t C ti C t l
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Intelligent Congestion Control
Power
ResourcesIub Transmission
Resources
NodeB Credit
Resources
Service Quality
UnchangedService Quality
Downgraded
Fast
TFC
Control
Load Reshuffling (LDR)
Handover
IRAT
HO
IF
HO
RAN-CN
Renegotiation
For
PS
Streaming
Code Resources ENU
Downsizing
BE rate
reduction
AMRC
MBMS
Power
Downgrading
Overload Control (OLC)
PS
CS
Drop off calls
Call Drop
Drop PS
Drop CS
! Integrate priority is used in LDR and OLC.
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Overview
Load Reshuffling
Overload Control
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Triggers of LDR
Power Resource:
Load level > LDR trigger threshold
Iub Bandwidth:
Available Iub bandwidth < predefined threshold
55%
70%
ULLDRTRIGTHD
DLLDRTRIGTHD
UL/DL LDR trigger threshold ADD/MOD CELLLDM
95%
95%
95%95%
95%
95%
95%
95%
RTFWCONGTHD
RTBWCONGTHD
NRTFWCONGTHDNRTBWCONGTHD
HSRTFWCONGTHD
HSRTBWCONGTHD
HSNRTFWCONGTHD
HSNRTBWCONGTHD
RT Forward congestion control threshold
RT Backward congestion control threshold
NRT Forward congestion control thresholdNRT Backward congestion control threshold
HsRT Forward congestion control threshold
HsRT Backward congestion control threshold
HsNrt Forward congestion control threshold
HsNrt Backward congestion control threshold
ADD/MOD
AAL2ADJNODE
Default valueParameter IDParameter nameMML command
No
Check the load of theserving periodically
Is the load higher thanbasic congestion trigger
threshold
Take congestion
release measures
Yes
No
End load adjustment
Yes
Is the load lower thanbasic congestion release
threshold
I t F H d i LDR
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Inter-Frequency Handover in LDR
Candidate target cell:
%LDR trigger threshold in target cell current load level in target cell& >
Predefined threshold in target cell
Candidate users:
Users with the lowest Integrated Priority
Bit rate smaller than the predefined maximum bandwidth
Action:
Blind handover
Cell 1
Cell 2
Load: high
Load: low
400 (kbps)ULINTERFREQHOBWTHD/DLI
NTERFREQHOBWTHD
UL/DL Inter-freq cell load
handover maximum bandwidth
20 (%)ULINTERFREQHOCELLLOAD
SPACETHD
DLINTERFREQHOCELLLOAD
SPACETHD
UL/DL Inter-freq cell load
handover load space threshold
ADD/LST/MOD
CELLLDR
Default
value
Parameter IDParameter nameMML command
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BE Rate Reduction in LDR
Candidate Users:
Users with the lowest integrated
priority
Only BE services are involved.
Action:
Reconfiguration
Highest High Lowest
Bit rate
GBR
Priority
384kbps
128kbps
64k 64k 64k
1ULLDRBERATEREDUCTIONRABNUM
DLLDRBERATEREDUCTION
RABNUM
UL/DL LDR-BE rate
reduction RAB number
ADD/LST/MODCELLLDR
Default
value
Parameter IDParameter nameMML command
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RT S i Q S R ti ti i LDR
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RT Service QoS Renegotiation in LDR
Candidate service:
PS streaming Action:
QoS renegotiation over Iu
1) RNC: RAB modification request (Iu)
2) CN: RAB assignment (Iu)
3) RNC: reconfiguration (Iub/Uu)
1ULLDRPSRTQOSRENEGRAB
NUM
DLLDRPSRTQOSRENEGRAB
NUM
UL/DL LDR un-ctrl RT
Qos re-nego RAB num
ADD/LST/MOD
CELLLDR
Default
value
Parameter IDParameter nameMML command
Inter RAT Handover of LDR
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Inter-RAT Handover of LDR
Candidate target cell:
2G cells with same/bigger coverage as serving 3G cellCandidate users:
User with lowest Integrated Priority
Actions:
PS service inter-RAT handover
CS service inter-RAT handover
WCDMA
GSM CELL
Load: high
3ULLDRCSINTERRATHOUSERNUM
DLLDRCSINTERRATHOUSERNUM
UL/DL LDR CS inter-
rat ho user number
1ULLDRPSINTERRATHOUSERNUM
DLLDRPSINTERRATHOUSERNUM
UL/DL LDR PS inter-
rat ho user number
ADD/LST/MOD
CELLLDR
Default
value
Parameter IDParameter nameMML command
Summary: Load Reshuffling
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Summary: Load Reshuffling
Users with Streaming serviceIu Qos renegotiation
Users with PS service
Users with CS service
Users with AMR speech
Users with BE service
Users in CELL_DCH
Inter-RAT load handover in PS domain
Inter-RAT load handover in CS domain
AMR reduction
BE service rate reduction
Inter-frequency load handover Actions
Related
Parameters
Up to 6 service oriented strategies to use when cell enters basic congestion state.Procedure
Users in Connected modeAffected users
CELLLDR.Class
UL/DL Inter-freq cel l load handover load spac e threshold
UL/DL Inter - f req cel l load handover m ax imum bou nd width
UL/DL LDR-BE rate reduct ion RAB nu mber
UL/DL LDR un-c t r l RT Qos re-nego RAB num
UL/DL LDR CS inter -ra t ho user num ber
UL/DL LDR PS inter -ra t ho user n umber
UL/DL LDR-AMR rate reduct ion RAB nu mber
1s t -6 th LDR act ion sequence
UL/DL BE guarantee bi t rate
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Overview
Load Reshuffling
Overload Control
O l d C t l (OLC)
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Overload Control (OLC)
Actions supported:
TFC Control of R99 BE serviceDrop of low priority UEs
Sequence of OLC actions:
Fast TFC control -> Call drop of UEs
Check the load of the
serving periodically
Is the load higher thanoverload congestion trigger
threshold
Yes
No
Yes
No
Take actions to release
congestionEnd load adjustment
Is the load lower thanoverload congestion release
threshold
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Fast TFC Control in OLC
Monitor Cell Load
If Cell load >
Congestion threshold
Congestion Detected
and inform MAC
Congestion Relieved
and infrom MAC
MAC decrease the
max TF number
Start a Adjust Timer
expires
Kill the Adjust Timer
MAC increase the
max TF number
Start a Recover Timer
expires
Downlink TFC Control
Performed within MAC-d/RNC
Uplink TFC Control
RNC -> UE: TFC control
P t f O l d C t l
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Parameters of Overload Control
5SRATERECOVERTIMERLENDL OLC fast TF restrict data rate recover
timer length
3SRATERSTRCTTIMERLENDL OLC fast TF restrict data rate restrict
timer length
0ULOLCTRAFFRELRABNUMDLOLCTRAFFRELRABNUM
UL/DL OLC traff release RAB number
68%RATERSTRCTCOEFData rate restrict coefficient
3ULOLCFTFRSTRCTRABNUM
DLOLCFTFRSTRCTRABNUM
UL/DL OLC fast TF restrict RAB number ADD/LST/MOD
CELLOLC
95%ULOLCTRIGTHD
DLOLCTRIGTHD
UL/DL OLC trigger threshold ADD/LST/MOD
CELLLDM
90%ULOLCRELTHD DLOLCRELTHDUL/DL OLC Release threshold
Default valueParameter IDParameter nameMML command
Summary: Load Control Parameter Classification
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Summary: Load Control Parameter Classification
RNC
RadioClass
GlobalParaClass CellClass
LDM.Class
CELLPUC.ClassUSERPRIORITY.Class
CORRMALGOSWITCH .Class
FRC.Class
QUEUEPREEMPT.Class
CELLLDM.Class
CELLLDR.Class
CELLOLC.Class
CELLCAC.Class
UL/DL basic meas rprt cycle, Unit:10ms
UL/DL basic meas rprt cyc le, Unit:min
LDM.Class
Integrate Priority Configured Reference
Indicator of Carrier Type Priority
USERPRIORITY.Class
RAB Downsizing Switch
Switcher for IU QoS Negotiation
CORRMALGOSWITCH .Class
Uplink ini t ial access rates
Downlink i nit ial access rates
FRC .Class
CELLLDR.Class
UL/DL Inter-freq cell load handov er load space threshold
UL/DL Inter - f req cel l load handover m ax imum bo und w idth
UL/DL LDR-BE rate reduct ion RAB nu mber
UL/DL LDR un-c t r l RT Qos re-nego RAB num
UL/DL LDR CS inter -ra t ho user nu mber
UL/DL LDR PS inter -ra t ho us er number
UL/DL LDR-AMR rate reduct ion RAB num ber
Load level division threshold 1
Load level division threshold 2
Load level division hysteresis
CELLPUC.Class
Preempt algorithm switch
Queue algorithm switch
Poll timer length
QUEUEPREEMPT.Class
UL threshold of Conv A MR service
UL threshold of Conv non_AMR service
UL threshold of oth er services
UL Handover access threshold
DL threshold of Conv A MR service
DL threshold of Conv non_AMR service
DL threshold of oth er services
DL Handover access threshold
DL total nonhsdpa equivalent user num ber
Maximum HSDPA user number
CELLCAC.Class
UL/DL OLC fast TF restrict times
UL/DL OLC fast TF restrict RAB num ber
Data rate restrict coefficient
UL/DL OLC traff release RAB number
CELLOLC.Class
UL/DL LDR trigger threshold
UL/DL LDR release threshold
UL/DL OLC Trigger threshold
UL/DL OLC Release threshold
CELLLDM.Class
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Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
Mobility Management Overview
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Mobility Management Overview
Load Based Handover
Intra-frequency Soft / Softer / Hard Handover
Service Based Handover
UE Speed Based Handover (HCS)
Coverage Based Handover
Motive
Inter-RAT Handover
Inter-frequency Handover Functionality
Classification
-Provide the subscribers the continuous communication services
-Load balancing and resources sharing
-Improve the utilization of system resources
Handover Scenarios
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Handover Scenarios
Intra-frequency Handover Soft / Softer Handover
Hard handover
Based on Coverage
Based on
Coverage
Based on
Load/
UE Speed
Inter-RAT Handover
Based on
Load/ServiceInter-frequency
Handover
Based on
Coverage
GSM/GPRS/EDGE
WCDMA Freq. 1
WCDMA Freq. 2
Intra-Frequency Handover
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Intra Frequency Handover
UE Performs IF
Measurement
MEASUREMENT CONTROL
message
> Measurement Quantity
> Event Parameters
> Neighbor cell list, etc.
If criteria is matched, UE sends
measurement report.
RNC Performs Handover
> Apply for Resource
(Admission)
> Signaling Procedure
Execution
> Update Parameters to UE
Measurement
Phase
Decision
Phase
Execution
Handover
RNC Makes Decision
> 1A Add Cell to AS
> 1B Remove Cell in AS
> 1C Replace a Cell in AS
> 1D Indicate Best cell
- Add 1D cell to AS or
do replacement
- May do Hard HO
Do Hard HO if conditions are
met.
Intra-Frequency Handover Key Parameters
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Intra Frequency Handover Key Parameters
Event Parameters
Event 1A> CS/PS service 1A event relative threshold
> 1A hysteresis
> 1A event trigger delay time
Event 1B
> CS/PS service 1B event relative threshold
> 1B hysteresis
> 1B event trigger delay time
Event 1C
> 1C hysteresis
> 1C event trigger delay time
Event 1D
> 1D hysteresis
> 1D event trigger delay time
Measurement
Phase
Decision
PhaseExecution
Handover
> Intra-freq Measure Quanti ty
> Cell offset> Max num ber of cel l in act ive set
Inter-Frequency Handover
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Inter Frequency Handover
HO Triggers
1. Based on Coverage
> UE Event 2D/2F Report
2. Based on Load
> LDR Module Report
3. Based on UE Speed> HCS UE Speed
Estimation
Measurement
1. CM measurement
needed
> Periodical Meas.
> Event Reporting
! 2D start CM
! 2F stop CM
! 2B coverage based
handover
! 2C load based
handover
2. No Meas. needed
> Blind HO
3. Use blind HO or 2C
Event Reporting
RNC Perform Handover
1. Apply for Resource
Admission
2. Signaling Procedure
Execution
3. Update Parameters to
UE
IF HO will be triggered
1. Coverage basedPeriodically Reporting:
> Signal Quality of target cell
meet requirement
> Keep Time to Trigger
Event Reporting:> Received 2B Event
2. LDR choose UE andtarget cell to Blind HO
3. Blind HO or 2C Event
Report
Handover Trigger
MeasurementPhase
DecisionPhase
ExecutionHandover
Inter-Frequency Handover Key Parameters
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Inter-Frequency Handover Key Parameters
Measurement
Phase
Handover
Trigger
ExecutionHandover
Event 2B
> Inter-freq CS/PS
Target/Used frequency
trigger Ec/No THD
*Thresholds also for
RSCP
Event 2C> Inter-freq measure
target frequency trigger
Ec/No THD
> 2B/2C hysteresis
> 2B/2C event trigger
delay time
Decision
Phase
Event 2D
> Inter-freq CS/PS measure
start Ec/No THD
Event 2F
> Inter-freq CS/PS measure
stop Ec/No THD
* Thresholds also for RSCP > 2D/2F hysteresis
> 2D/2F event trigger delay
time
> Inter- f requency measure report m ode
Ø In ter- f requency measure q uant i ty
> Inter-f requency measure per iod ica l rpt per iod
(for periodical reporting mode)
For Periodical reporting mode
> Inter-freq CS/PS target frequency trigger Ec/No THD
(thresholds also for RSCP)
> Inter-freq handover min access Ec/No RSCP THD
> HHO hysteresis
Inter-RAT Handover
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Inter RAT Handover
Handover Trigger
MeasurementPhase
DecisionPhase
ExecutionHandover
HO Triggers
1. Based on Coverage
> UE Event 2D/2F Report
2. Based on Load
> LDR Module Report
3. Based on Service
> When a service isestablished
> Service HO properties
Measurement
1. CM measurement
needed
> Event Reporting
! 2D - start CM
! 2F - stop CM
! 3A - based on
> Periodical Meas.
Reporting
2/3. Use 3C Event
Reporting.
The RNC initiates a
handover procedure.
Inter-RAT HO triggered
1. Coverage based
3A Event Reporting:
> Received 3A Event
Periodically Reporting:
> Signal quality of target cell
meet requirement
> Keep Time to Trigger
2/3. HO to cells in 3C
Event Report By UE
Inter-RAT Handover Key Parameters
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Measurement
Phase
Handover
Trigger Execution
Handover
Event 3A
> Inter-RAT CS/PS Used
frequency trigger Ec/No
THD (or RSCP)
> Inter-RAT CS/PS
handover decision THD
Event 3C> Inter-RAT CS/PS
handover decision THD
> 3A/3C hysteresis
> 3A/3C event trigger
delay time
Decision
Phase
Event 2D
> Inter-RAT CS/PS measure
start Ec/No THD
Event 2F
> Inter-RAT CS/PS measure
stop Ec/No THD
* Thresholds also for RSCP > 2D/2F hysteresis
> 2D/2F event trigger delay
time
> Inter-RAT report mo de
> 3A Measure Quantity
> Inter-RAT period report in terval
> BSIC ver ify sw i tch
For Periodical reporting mode
> Time to trigger for verified GSM cell
> Time to trigger for non-verified GSM cell
> Inter-RAT CS/PS handover decision THD
> Inter-RAT hysteresis
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Packet Scheduling
Adaptive Multiple Rate Control
Power Control
Load Control
Mobility
HSDPA
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
Configuration and Capacity
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Configuration and Capacity
n Each cell can support R99, HSDPA or R99+HSDPA.
n The max codes for HS-PDSCH per cell can be be up to 15 and max TB
size can be up to 27952 in RAN 5.0.n Support 16 simultaneous HSDPA users per cell in RAN 5.0, and 64
simultaneous HSDPA users per cell by RAN 6.0.
RAN 6.0RAN 5.0
R99/HSDPA/R99+HSDPA
Max 15 HS-PDSCH codes
per cell
Max TBsize 27952
Max 4 HS-SCCHs per cell
16 HSDPA users per cell
64 HSDPA users per cell
Features Roadmap
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Features Roadmap
RAN 5.1RAN 5.0
Interactive / Background mappingon HS-DSCH
Dynamic / static power allocation
Static code allocation
Basic admission control
Pre-emption / queuing
Channel switch (based on traffic
volume or mobility)
MAC-hs scheduling (MAX C/I, RR,PF)
Iub flow control
HS-DSCH cell change / intra or
inter- frequency HHO / inter-RAT
HO
Streaming services
mapping on HS-DSCH
GBR configuration for BE
services
RNC controlled dynamic
code allocation
GBR based admission
control
Channel switch (based on
periodical timer)
Enhanced MAC-hs
scheduling (EPF)
HS-SCCH power control
based on CQI
HSDPA congestion control
NodeB
controlled
dynamic code
allocation
HSDPA load
reshuffling
RAN 6.0
VoIP over
HSDPA
HSDPA over
Iur
F-DPCH with
SRB mappedon HSDPA
RAN 7.0
HSDPA Key Techniques - OverviewHSDPA Key Techniques - Overview
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y
AMC Fast SchedulingHARQ&
Hybrid ARQ'
16QAMSF16, 2ms and CDM/TDM 3 New Physical Channels
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
HSDPA Channel Mapping
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n Interactive, Background and Streaming service could be mapped onto HS-DSCH.
n The bit rate thresholds are used.RABs with maximum bit rate higher than or equal to the threshold will be mapped
onto HS-DSCH.
The bit rate thresholds (DL streaming threshold on HSDPA , DL BE traf f ic threshold
on HSDPA) are OM configurable.
n One switch (PS_STREAMING_ON_HSDPA_SWITCH ) is available for operator todisable the mapping of streaming service onto HS-DSCH.
Interactive
Background
Streaming
mapping RB on DCH
RB on HS-DSCH
RB on FACH
HSDPA Channel Mapping
HSDPA Channel Switching
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l Channel type switching and state transition
CELL_DCH (with HS-DSCH) ß à CELL_FACH based on user activityCELL_DCH (with HS-DSCH) ß à CELL_DCH (without HS-DSCH)
HSDPA Channel Switching
CELL_DCH(HS-DSCH))
CELL_DCH
CELL_FACH
CELL_PCH
URA_PCH
n Based on user activity (TVM)
n Trigged by mobility
n Triggered by TVM
n Triggered by timer
Parameters for HSDPA Channel Switching
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l Channel Switching between HS-DSCH and FACH
Parameters for HSDPA Channel Switching
BE HS-DSCH to FACH 4B thresh old
BE HS-DSCH to FACH 4B time to tr ig ger
BE HS-DSCH to FACH 4B Pendin g Time
BE HS-DSCH to FACH transi t ion t imer
-- This parameter is used to detect the stability of a UE in low activity state in
CELL_DCH (with HS-DSCH) state.
SET UESTATETRANS
l Channel Switching between HS-DSCH and DCH
H Retry TimerLength
-- Length of retry timer for periodical attempts to map the service onto the
HS-DSCH.
SET COIFTIMER
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
HSDPA Power Allocation
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Dynamic power allocation
l DPCHs have the preferential right to
occupy the power
l Node B can use all the remaining power
for HSDPA
l The minimum available part for HSDPA
can be guaranteed
l A configurable margin is used to keep
the system in stable status
Time
Allowed power for HSDPA
Total Power
DPCH
Power for CCH
Higher
power utility
efficiency
Time
Power margin for DCH
power control
Power Margin
SET MACHSPARA
HSDPA Power Control
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HS-DPCCH Power Control
l By setting power offsets between HS-DPCCH
and associated DPCCH for ACK, NACK and CQI
l Different PO values are used for soft handover
SCCHPWRCM
SET MACHSPARA
HS-SCCH Power Control
l Fixed power controll Based on CQI
HS-PDSCH Power Control
l Allocated by scheduler
ACKPO, NACKPO, CQIPO
ADD CELLHSDPCCH
HSDPA Code Allocation (1)
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l Static Code Allocation
ü Simple but robustü The code allocation for HS-
SCCHs and HS-PDSCHs is
static. It is configurable
ü Low code utilization efficiency
SF=256SF=128 &'(C(256,0) : PCPICH
& 0 )SF=64 * +'(C(256,1) : PCCPCH
& 0 )* * &'(C(256,2) : AI CH* + 1 )
SF=32 * +'(C(256,3) : PICH& 0 )
SF=16 * + (C(64,1) :SCCPCH 1& 0 )* ** * & (C(64,2) :SCCPCH 2* * ** + 1 )
SF=8 * * &'(C(128,6) : HS-SCCH 1& 0 ) + 3 )
SF=4 * +',1 *& 0 ) +'(C(128,7) : HS-SCCH 2* + ,1*+',1
&',2* & ,6 ( CCH* * SF=16 ( HSDPA* * & (C(16, 14) : HS-PDSCH 2 , DCH
+' 3 ) *+ 7 )+ (C(16, 15) : HS-PDSCH 1
( )
HS-PDSCH Code Num
--- This parameter sets the number of
HS-PDSCH codes available in a cell.
ADD CELLHSDPA
HSDPA Code Allocation (2)
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( )
ü RNC will continuously monitor the usage of OVSF
codes for DPCH channelsü Via RNC reconfiguration procedure
ü Better code utilization efficiency
Codes
for CCH
and HS-
SCCH
7 8 9 10 11 12 13 146543 15210
Shared codes
Reserved codes for DPCHMi ni mumreserved codes f or HSDPA
SF=16
Re-allocated to HSDPA if the codes used by the established
DPCHs are much less than the codes available
It will be called back by DPCHs through reconfiguringthe codes for HSDPA if the codes are almost used up by
DPCH channels
SF=16
SF=16
Maxi mumavai l abl e codes f or HSDPA
%.
l RNC-Controlled Dynamic Allocation
Minimum Num ber of HS-
PDSCH Cod es
-- The minimum number of
HS-PDSCH codes available in
a cell
Maximum Numb er of HS-
PDSCH Cod es
-- The maximum number of
HS-PDSCH codes available in
a cell
ADD CELLHSDPA
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
Downlink Power Admission Control of HSDPA cell
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Downlink Power Admission Control of HSDPA cell
New Measurements for HSDPA cell
- Transmitted Carrier Power of all codes not used for HS-DSCH transmission:
Pnon-hspa
- HS-DSCH GBR required Power: GBP
Load estimation of new HSDPA service
- Predicted HS-DSCH required power increase for Steaming service:(
Ppre-strm
- Predicted HS-DSCH required power increase for BE service:(Ppre-BE
Power resource admission check of HSDPA service in HSDPA cell
Power resource admission check of R99 service in HSDPA cell
Dynamic Power Management - Overview
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y g
PMax
P non-hspda
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
hsdpa P −max
GBP
Relative Parameters
Admission threshold for R99 power (Thr non-hspa-cac)
Admission threshold for cell total load(Thr total-cac)
Admission threshold for HSDPA maximum power (Pmax-hspa)
GBR Consideration in Power Admission Check - DCH
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P Max
P non-hspda
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
GBP
n DCH service access:
maxnon hspa pre non hspa cac P P P Thr − − −+ ∆ < ⋅
cactotal pretotal Thr P P P −⋅<∆+ max
cactotal prehspa strm BE hspanon Thr P P P GBP GBP P −−− ⋅<∆+++ maxmax )),min((
A
B
P
hsdpa P −max
(A and B) or (A and C) is true, then CAC is OK.
C
Example DCH Access - Accept
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Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac= 80%
! Ptotal=90%, low HSDPA load (GBP=30%), low R99 load (30%)
P Max
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
R99
(Currently consumed power =30%)
HSDPA
(Currently consumed power =60%, GBP=30%)
P (10%)
maxnon hspa pre non hspa cac P P P Thr − − −+ ∆ < ⋅A
30%
10%
80%
cactotal pretotal Thr P P P −⋅<∆+ maxB
30% 60% 90%
10%
TRUE !
TRUE ! cactotal prehspa strm BE hspanon Thr P P P GBP GBP P −−− ⋅<∆+++ maxmax )),min((C
30% 30% 10% 90%
False !
Example DCH Access - Reject
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maxnon hspa pre non hspa cac P P P Thr − − −+ ∆ < ⋅A
30%
10%
80%
cactotal pretotal Thr P P P −⋅<∆+ maxB
30% 60% 90%
Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac=80%
!Low R99 load (30%), high H GBR load (55%), new R99 call accesses
P Max
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
R99
(Currently consumed power = 30%)
HSDPA
(Currently consumed power =60%,GBP=55%)
P (10%)
TRUE !
10%
cactotal prehspa strm BE hspanon Thr P P P GBP GBP P −−− ⋅<∆+++ maxmax )),min((C
30% 55% 10% 90%
False !
False !
Example DCH Access " Accept or Reject ?
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maxnon hspa pre non hspa cac P P P Thr − − −+ ∆ < ⋅A
75%80%
10%
Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac=80%! High R99 load (75% or 60%), low H GBR load (15%), new R99 call accesses
P Max
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
R99
HSDPA GBP = 15%
P (10%)
maxnon hspa pre non hspa cac P P P Thr − − −+ ∆ < ⋅A
60% 80%10%
10%
cactotal pretotal Thr P P P −⋅<∆+ maxB
60% 15% 90%
cactotal prehspa strm BE hspanon Thr P P P GBP GBP P −−− ⋅<∆+++ maxmax )),min((C
60% 15% 100% 10% 90%
GBR Consideration in Power Admission Check - HSDPA
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PMax
P non-hspda
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
GBP
P
hsdpa P −max
hspa pre BE strm P P GBP GBP −<∆++ max
cactotal pretotal Thr P P P −⋅<∆+ max
cactotal pre BE strmhspanon Thr P P GBP GBP P −− ⋅<∆+++ max)(
A
B
C
n HSDPA service access: (A and B) or (A and C) is true, then CAC is OK.
** B is not applied to BE service in RAN 5.1.
Example HSDPA Access " Accept
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Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac=80%
!Low H load (30%), low R99 load (30%), new H call accesses
PMax
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
R99
Currently consumed power = 30%
HSDPA
Currently consumed power = 30%,GBP=20%
P (15%)
(A and B) or (A and C) is true
hspa pre BE strm P P GBP GBP −<∆++ max
cactotal pretotal Thr P P P −⋅<∆+ max
cactotal strm pre BE strmhspanon Thr P P GBP GBP P −−− ⋅<∆+++ max)(
A
B
C
30%
20%
15% 90%
15%
30%
30% 20% 15% 90%
100%TRUE !
TRUE !
TRUE !
Example HSDPA Access " Reject (1)
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hspa pre BE strm P P GBP GBP −<∆++ max
cactotal pretotal Thr P P P −⋅<∆+ max
cactotal strm pre BE strmhspanon Thr P P GBP GBP P −−− ⋅<∆+++ max)(
A
B
C
30%
55%
15% 90%
15%
60%
30% 55% 15% 90%
Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac=80%! Low R99 load (30%), high H GBR load (55%), new H call accesses
P Max
cachspanonThr P −−⋅max
cactotal Thr P −⋅max P (15%)
A is true, but B or C is false
100%
HSDPA
Currently consumed power = 60%,
GBP=55%
R99
Currently consumed power = 30%
TRUE !
False !
False !
Example HSDPA Access " Reject (2)
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hspa pre BE strm P P GBP GBP −<∆++ max
cactotal pretotal Thr P P P −⋅<∆+ max
cactotal strm pre BE strmhspanon Thr P P GBP GBP P −−− ⋅<∆+++ max)(
A
B
C
70%
15%
15% 90%
15%
15%
70% 15% 15% 90%
100%
Suppose that:
! Pmax=Pmax-hspa; Thr total-cac=90%; Thr non-hspa-cac=80%
! High R99 load (70%), low H GBR load (15%), new H call accesses
PMax
cachspanonThr P −−⋅max
cactotal Thr P −⋅max
R99
H GBR
P (15%)
A is true, but B or C is false
TRUE !
False !
False !
Conclusions " Downlink Power Admission for HSDPA Cell
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n GBR is introduced to HSDPA I/B services.
n ARP is considered when setting GBR.
n Power is shared between HSDPA and R99.
n Maximum power limitation is available for R99 and HSPDA
respectively.
n HSDPA power is guaranteed for the pre-defined GBR.
HSDPA is not
best effort !
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
HSDPA Scheduling Algorithm
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Scheduling Algorithm:
l RR (Round Robin)
l MAXCI (Max C/I)
l PF (Proportional Fair)
l EPF (Enhanced PF)
Scheduling Method
SET MACHSPARA EPF
l X GBR services are scheduled with PF algorithm
l Y GBR services are scheduled according to priority
l Z All services are scheduled with PF algorithm
Scheduling
algorithm period
Time
Scheduling
algorithm period
Scheduling
algorithm period
Scheduling
algorithm period
GBR service
scheduled with PF(X)
GBR service
forcibly scheduled (Y)
All service
scheduled with PF(Z)
X, Y, and Z Time Segments of Scheduling Algorithm Period
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X time segment: GBR service:)(
)(Pr
max _
t r
t Riority
i
i= (traditional PF algorithm)
Y time segment: GBR services not meeting the GBR requirements SPI iority =Pr
Larger SPI indicates higher priority.
GBR services with the same SPI can use the RR, MAXC/I, or PF algorithm.
Z time segment: all services including GBR ones that meet GBR requirements SPI
i
i
t r
t Riority γ ⋅=
)(
)(Pr
max _
(PF*algorithm)
Note*: SPI γ priority proportion coefficient that corresponds to SPI value
1. In X time segment, cell throughput is enhanced, which requires a larger segment size.
When some GBR services cannot meet the GBR requirements, you must reduce the size
of X time segment to enlarge Y segment, thus ensuring GBR services.
2. The sizes of the X, Y, and Z time segments can be dynamically changed to increase cell
throughput with guaranteed GBR.
HSDPA EPF Scheduling Algorithm Performance
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EPF
l X " GBR services are scheduled with PF
algorithm
l Y " GBR services are scheduled
according to SPI
l Z " All services are scheduled with PF
algorithm
00. 10. 2
0. 30. 40. 50. 60. 7
0. 80. 9
1
32kbps 64kbps 128kbps 256kbps 384kbps
GBR conf i gured
R a t i o
o f u s e r w h o s e G B R
i s s a t i s f i e d
Enhanced PF MAXCI RR Cl assi c PF
Scheduling
algorithm period
Time
Scheduling
algorithm period
Scheduling
algorithm period
Scheduling
algorithm period
GBR service
scheduled with PF (X)
GBR service
forcibly scheduled (Y)
All service
scheduled with PF(Z)
Power Resource Limiting Ratio in Scheduling
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Purpose
To settle the issue: The throughput of non GBR services is quite low due to power resources over-
occupied by GBR services when the channel conditions are bad, and the power resource efficiency
becomes lower.
Example
1. There are three users accessing the HSDPA BE service and two users accessing the HSDPA
streaming service at 90 kbps. The CQIs of the five users are 18, 15, 6, 12, and 10.
2. During congestion, each HSDPA user uses 12% power at most.
In this situation, the data rate of the third user can be increased from 20 kbps to (40 to
50) kbps at most. Otherwise, the impact on the cell throughput and the experience of
the other users in the cell will be large.
CQI Correction
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Ini t ial BLER -- [1,50]percent
SET MACHSPARA
Improvement of throughput and downlink load
4.638 4.64
57.50%
30%
0
1
23
4
5
6
7
8
9
10
CQAC Cl osed CQAC Open
M a c t h
r o u g h p u t ( M b p s )
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
D o
w n l i n k L o a d
MAC t hroughput( Mbps) Downl i nk Load
4.638 4.64
57.50%
30%
0
1
23
4
5
6
7
8
9
10
CQAC Cl osed CQAC Open
M a c t h r o u g h p u t ( M b p s )
0.00%
10.00%
20.00%
30.00%
40.00%
50.00%
60.00%
70.00%
D o w n l i n k L o a d
MAC t hroughput( Mbps) Downl i nk Load
Factors affecting accuracy of CQI:
Channel environment
Measurement accuracy of UE
CQI correction
Node B corrects the CQI according to the target initial
BLER and actual data transmission
Extend CQI Mapping Table
E t d CQI i t bl th th t ifi d i 25 214
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Table1 : Extended CQI mapping table for UE category 10 -Partial
016-QAM5756423
016-QAM152696933
016-QAM152649032
0####
016-QAM152602031
016-QAM152555830
016-QAM6857423
016-QAM152795234
016-QAM###
016-QAM7971923
016-QAM5716822
016-QAM5655421
Reference power
adjustmentModulation
Number of
HS-PDSCH
Transport Block
SizeCQI value
CQI =23, Number=5,TB size=7564, about 5.5%
higher than 7168
CQI=34, Number=15TB size=27952, about 9.4%
higher than 25558
Extend CQI mapping table than that specified in 25.214
Improve the resource usage
Improve the throughput
Example: Extended CQI mapping table for UE category 10
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
HSDPA Flow Control Overview
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Node BUu RNCIubCN
Why ?
n Balance the data flow between Iub and Uun Achieve high bandwidth utilization efficiency, maximize the cell
throughput
n Decrease data transmission delay, avoid data discard and
retransmission due to congestion
Functions
n Response to a HS-DSCH Capacity Request, to indicate the number of
MAC-d PDUs that the RNC is allowed to transmit for each CmCH-PI of
each UE in the specified interval.
n Modify the capacity and control the user data flow according to the
MAC-hs queue buffer size.
HSDPA Flow Control Procedure over IubHSDPA Flow Control Procedure over Iub
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NodeB
HSDPAqueue
HSDPA
RNC
ATM Subsystem
MAC-d Entity
MAC-d Entity
AAL2
Entity
AAL2Entity
ATMMux.
B
A
B
A
Iub bandwidth
Capacity allocation
queue
nQueue based flow control- Avoid overflow in queue buffer
- Quick data transmission over Iub
n Iub utilization based flow control- Allocate capacity considering available Iub
bandwidth
- Avoid data loss over Iub
MAC_hs Flow Control " Step1: Available Iub Bandwidth for HSDPA
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In RAN5.1, available Iub bandwidth for HSDPA is calculated in NodeB :
BW_H =Min { (BW_Total - BW R99), BW_H_AAL2Path }
BWR99 is the R99 Radio Bearer admitted transmission bandwidth " CAC Iub bandwidth.
BWR99
BWHSDPAT o t al A A L 2 B W T
time
BW
Scenario 1 (larger R99 AF): Waste Iub bandwidth
Scenario 2 (Samll R99 AF): Overbook bandwidth, Iub will be congest
Scenario 1:
R99 service throughput <
R99 CAC admitted BW
Scenario 2:
R99 service throughput >
R99 CAC admitted BW
RL SET/RL RECONFIG
MAC_hs Flow Control " Step 2 Allocate the H Iub bandwidth
among HSDPA users
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among HSDPA users
1. HSDPA scheduler calculates each user #s air throughput and air capacity*
2. Based on each user #s air throughput, MAC_hs buffer occupation, RLC buffer
occupation, MAC_hs calculates each user #s requirement for Iub bandwidth
3. Allocate the Iub bandwidth to each HSDPA user
If Iub is limited, bandwidth for each user will scale down with same ratio after each user 's GBR is
guaranteed.
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Overview
Channel Type Mapping
Power and Code Management
Power Admission Control
Scheduling
Flow Control
Mobility Management
HSDPA Mobility Management (1)
n Handover between HSDPA and R99 cells
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n Handover between HSDPA and R99 cells
Cell 2(R99)Cell 1(HSDPA) Cell 2(R99)Cell 1(HSDPA)
before handover after handover
Cell 2(R99)Cell 1(HSDPA) Cell 2(R99)Cell 1(HSDPA)
before handover after handover
Cell 2(R99)Cell 1(HSDPA) Cell 2(R99)Cell 1(HSDPA)
before handover after handover
Cell 2(R99)Cell 1(HSDPA) Cell 2(R99)Cell 1(HSDPA)
before handover after handover
Soft handover
The 1b (remove) is triggered
by HSDPA cell
Inter-frequency handover
2B is triggered by R99 cell
Soft handover
HSDPA cell is added into active set
The 1d event is triggered by HSDPA cell
Inter-frequency handover
The 2B event is triggered by
HSDPA cell
HSDPA Mobility Management (2)
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n Handover between HSDPA cell and HSDPA cell
before handover after handover
Cell 2(HSDPA)Cell 1(HSDPA) Cell 2(HSDPA)Cell 1(HSDPA)
before handover after handover
Cell 2(HSDPA)Cell 1(HSDPA) Cell 2(HSDPA)Cell 1(HSDPA)
before handover after handover
Cell 2(HSDPA)Cell 1(HSDPA) Cell 2(HSDPA)Cell 1(HSDPA)
HSDPA hysteresis t imer length
-- After event 1D triggers HSDPA handover, this
timer is started. Then, event 1D will not trigger
HSDPA handover any more before expiry of this
timer.
SET HOCOMM
The 1d event is triggered by
cell 2
Inter-frequency handover
2B is triggered by HSDPA cell
(cell2)
HSDPA serving cell is deleted
and the remaining cell supports
HSDPA
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Thank YouThank You
Mar 2007
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Apr. 2006
Node B Products of Huawei
Huawei RAN 6.0 Features
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
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HSUPA (specific topic)
HSDPA Enhanced Features
AMRC-WB
MBMS
Load Control Enhancement
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NodeB-controlled Dynamic Code Allocation
Flow Control
HSDPA Enhanced Features
NodeB-controlled Dynamic Code Allocation
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ü The minimum number of codes for HSDPA is configurable
ü Reconfiguration procedure is not needed
ü Making full use of the whole code tree
Codes for
CCH and
HS-SCCH
7 8 9 10 11 12 13 146543 15210
Avai l abl e codes for DPCH Reserved codes f or HSDPA
SF=16
Node B enlarges the allocated codes for HSDPA temporally
due to HSDPA data transmission if the adjacent code is free
Node B will release the code temporally occupied by HSDPAwhen it is allocated to DPCH by RNC
SF=16
SF=16
%.
Code Number for HS-PDSCH
ADD CELLHSDPA
Available Iub bandwidth for HSDPA at Iub interface level:
Available Iub Bandwidth for HSDPA in RAN 5.1
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Available Iub bandwidth for HSDPA at Iub interface level:
∑ +=i
HSDPA HSDPAi R PATH NRT H PATH RT H BW T )} _ _ _ _ (,-{MinBW_Avlb 99HSDPA #$
BWR99i is the R99 Radio Bearer admitted transmission bandwidth.
BWR99
BWHSDPA
T o t al A A L 2 B W T
time
BW
Scenario 1: Waste Iub bandwidth.
Scenario 2: Overbook bandwidth.
To avoid Iub congestion, HSDPA flow maps to lower priority PATH, and overbook function be enabled
to avoid congestion.
Scenario 1:
R99 throughput < CAC
admitted BW
Scenario 2:
R99 throughput >
CAC admitted BW
Adaptive Adjustment of Available Iub bandwidth for HSDPA
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Transmission Delay
and Packet Loss
Detection
Start
Delay Increasing
Or Packet loss
Decrease the
bandwidth of HSDPA
Increase the
bandwidth of HSDPA
Y
N
Detect Iub congestion state based on packet transmission delay (FrameDiscard
RateThreshold ) and packet loss (DlTrDelayJitterThldBase ).
&None congestion: Increase HSDPA available BW.
& Congestion: Decrease HSDPA available BW.
Si l i R l 1
Simulation Result 1 of HSDPA Flow Control in RAN6.0
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Scenar io Descr ipt ion
Iub PATH priority: R99 PATH > HSDPA PATH
Activation factor of R99 BE service in Iub CAC is
100%;
Actual activation factor of R99 BE service is 50%;
Traffic model of HSDPA user: FTP download a large
file, such as 50MBytes.
Simulation Result 1
Total R99 efficient throughout in RLC layer (kbps)
Total HSDPA efficient throughout in RLC layer (kbps)
Total R99 efficient throughout in RLC layer
RED: Iub congestion detection switch on.LIGHT BLUE: Iub congestion detection switch off
Total HSDPA efficient throughout in RLC
layer
GREEN: Iub congestion detection switch onBLUE: Iub congestion detection switch off
Simulation Result 2 of HSDPA Flow Control in RAN6.0
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Scenario Descrip t ion IUB PATH priority: R99 PATH > HSDPA PATH
Activation factor of R99 BE service in Iub CAC is 50%;
Actual activation factor of R99 BE service is 100%;
Traffic model of HSDPA user: FTP download a large file, such as 50MBytes.
Iub transport configuration: 1*E1
R99 traffic: 1.128kbps + 1 . 384kbps
The RLC rate downsizing algorithm based on RLC retransmission rate is switched off.
Simulation Result 2
36.4380.1Switch off
93.0970.5Switch on
Iub transport efficiency (%)HSDPA Efficient throughput in
RLC layer (kbps)
Iub Congestion Detection Algorithm
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HSUPA
HSDPA Enhanced Features
AMRC-WB
MBMS
Load Control Enhancement
AMR-WB SummaryAMR-WB is
introduced in R5
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FR AMR-WB, UMTS AMR-WB, OFR AMR-
WB, OHR AMR-WFR AMR, HR AMR, UMTS AMR, UMTS AMR2, OHR AMRCoding Types
16k Hz8k HzSampling Frequency
conference call, video conferencetelephone communicationApplication
50)7000 Hz100)3400 HzFrequency Band
AMR-WBAMR-NB
0000No Data(0)
003939SID(1.8)
05342954.75
054491035.15
063551185.9
076581346.7
087611487.4
084751597.95
40996520410.2
601038124412.2
Class CClass BClass ATotal Number of BitsRate Mode
0000No Data(0)
003535SID(1.75)
078541326.60
0113641778.85
01817225312.65
02137228514.25
02457231715.85
02937236518.25
03257239719.85
03897246123.05
04057247723.85
Class CClass BClass ATotal Number of BitsRate Mode
AMR-NB Frames AMR-WB Frames
AMRC-WB Feature
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# Support AMR-WB services and multi-RABs including AMR-WB.
# TFO/TrFO
# Support AMRC for AMR-WB services
& UL AMRC-WB based on UE transmitted power
& DL AMRC-WB based on transmitted code power
& UL/DL AMB-WB rate mode downgrade due to Iub transmission resource limitation
& UL/DL AMB-WB rate mode downgrade due to power limitation
UL AMRC-WB Based On UE Transmitted Power
SET AMRCWBUE Tx power UE max Tx power
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UL 6A1 event relative threshold
UL 6B1 event relative threshold
UL 6A2 event relative threshold
UL 6B2 event relative threshold
Trigger time 6A1
Trigger time 6B1
Trigger time 6A2
Trigger time 6B2
SET AMRCWB
Reportingevent 6A2
Reportingevent 6B2
Reportingevent 6A1
Reportingevent 6B1
Time
Tx power threshold 6B1
Tx power threshold 6A2
Tx power threshold 6B2
p
Tx power threshold 6A1
Delta_6A1
Delta_6A2Delta_6B1
Trigger time
Reporting event
Delta_6B2
↓: represent decrease the permitted maximum codec mode
↑: represent increase the permitted maximum codec mode
→: represent remain the current permitted maximum codec mode
Start↑6B2
Stop→6A2
Stop→6B1
Start↓6A1
Ul_Rate_adjust_timerPermitted Highest AMR-WB
Codec ModeEvent
DL AMRC-WB Based On Transmitted Code Power
DL DPDCH
Tx Power
Maximum DLDPDCH Power
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DL E1 event relative threshold
DL E2 event relative threshold
DL F1 event relative threshold
DL F2 event relative threshold
DL measurement reporting period
SET AMRCWB
Tx Power
threshold E1
Tx Power
threshold E2
Tx Power threshold F2
Tx Power
threshold F1
Tx Power
Time
Rate -D own Norm al Rate_Up Normal
Delta_E1 Delta_F1Delta_F2Delta_E2
↓: represents the decrease in the permitted maximum codec mode.
↑: represents the increase in the permitted maximum codec mode.
→: represents that the current permitted maximum codec mode is kept.
↑↑↑DPDCH power < F1
↑→→F1 " DPDCH power < F2
→→→F2 " DPDCH power " E2
→↓→E2 < DPDCH power " E1
↓↓↓DPDCH power > E1
Rate_UpRate_DownNormalDPDCH Power
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MBMS Standard Evolution
Ø MBMS (M ltimedia Broadcast/M lticast Ser ice) is a point to multipoint
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Ø MBMS (Multimedia Broadcast/Multicast Service) is a point-to-multipoint
service, a broadcast & multicast capability over 3G network. MBMS is realised by the addition of a number of new capabilities to existing functional entities ofthe 3GPP architecture and by addition of a number of new functional entities.! -- 3GPP TS 23.246
Ø MBMS is an end to end solution: CN, RAN and UE%
Ø MBMS is an evolving technology.
3GPP MBMS
Work Item
Introduction
Kickoff for
3GPP MBMS
MBMS
Broadcast
MBMS
Enhanced
Broadcast
MBMS
Multicast
MBMS
LTE %
MBMS RAN Key Features
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! Selective Combining
! Soft CombiningMacro Divers i ty
! Get user number interested in a given MBMS service
!Determine the optimum transmission mechanism for agiven MBMS service
Count ing &
PtP / PtM
! Add MAC-m architectureProtocol En t i t ies
! Add 3 logical channels mapped to FACH
! Add 1 physical channelChannel Structure
Ø MBMS RAN Key Features:
RAN: Channel Structure
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indicating the changes of MBMS control signaling on MCCH
(Indication of MCCH modification)MICH
used for a p-t-m downlink transmission of user plane information
(for MBMS user data)MTCH
used for a p-t-m downlink transmission of MBMS service transmission schedule (for MBMS
schedule data)MSCH
used for a p-t-m downlink transmission of control plane information
(for MBMS control data)MCCH
RAN 6.0
RAN 6.0
RAN 6.0
RAN: Soft / Selective Combining
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Ø Selective combining: gaining 3 dB compared to no combining
Ø Soft combining: gaining 5 dB compared to no combining, high level synchronization
required
CELL1 CELL2
UM RLC
Selective Combining
High layer UE
Channel decoding
Selective Combining
CELL1 CELL2
UM RLC
RAKE combining
High layer
UE
Channel decoding
LLR combining
TrCH de-multiplex
Soft Combining
RAKE combining
TrCH de-multiplex
RAKE combining
TrCH de-multiplex
RAKE combining
TrCH de-multiplex
Channel decoding
RAN 6.0 RAN 6.0
Broadcast and Multicast
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Subscription
Joining
Service announcement
Data transfer
Leaving
MBMS notification
Session start
Session Stop
Multicast
Ø Support Charge-on-view time
Ø Longer channel switch delay
Broadcast
Data transfer
MBMS notification
Session Start
Session Stop
Service announcement
Ø Charge per day/week/month
Ø short channel switch delay
RAN 6.0
Huawei MBMS Roadmap
MBMS LTE
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Enhanced Broadcast! Capacity: 64 session/RNC; 4 x256kbps/ 8x128 kbps/ 16 x 64kbps channels per cell
! Enhanced broadcast
! MSCH Supported
!MBMS over HSDPA (PtP)
! Iub transmission share
! Uu Code and power share
! Compatible with CMB (enhanced broad & multi-cast)
Enhanced Broadcast! Capacity: 64 session/RNC; 4 x256kbps/ 8x128 kbps/ 16 x 64kbps channels per cell
! Enhanced broadcast
! MSCH Supported
! MBMS over HSDPA (PtP)! Iub transmission share
! Uu Code and power share
! Compatible with CMB (enhanced broad & multi-cast)
Broadcast (For trial)
!Capacity: 2 x 256kbps/ 4x128 kbps/ 8x 64kbps channels per cell
!Broadcast
!Compatible with CMB (broadcast)
Broadcast (For trial)
!Capacity: 2 x 256kbps/ 4x128 kbps/ 8x 64kbps channels per cell
!Broadcast
!Compatible with CMB (broadcast)
Multicast
! MBMS over HSPA ( PtM)
! MBMS over dedicated carrier
Multicast
! MBMS over HSPA ( PtM)
! MBMS over dedicated carrier
!MBMS over LTE!MBMS over LTE
2007 2008 2009 201020082007 2008 2009 2010
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Power Resource Admission Check
UL/DL algorithm1
Algorithm
DCH
Type
Based on power or interference
RAN6.0RAN5.1Remark
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!Control the user number mapped on E-
DCH
User number checkHSUPA
Control the user number mapped on HS-
DSCH
User number checkStreaming
Check the power usage for HSDPA BEPower usage check
Check the aggregated Streaming traffic
provided bit rate
PBR admission check
BE
!Based on power (prediction)DL algorithm1MBMS
!Based on the equivalent number of usersUL algorithm2
Check the aggregated BE traffic provided
bit rate
PBR admission check
Power usage check
User number check
UL/DL algorithm3
UL/DL algorithm2
UL/DL algorithm1
Check the power usage for HSDPA
Streaming
Control the user number mapped on HS-
DSCH
HSDPA
DCH
Based on power or interference (without
prediction)
Based on the equivalent number of users
Based on power or interference
(prediction)
Support downgrading
power for admission
HSUPA Admission Check Procedure
l User number admission check
l ENU d i i h kADD NODEBALGOPARA
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HSUPA access request
Get the total ENU of allexisting users.
Calculate the increment of the
new incoming HSUPA user
Forecast the ENU load
Compare the forecast ENUload with the theshold
max
tot al new ENU ENU
ENU
+
new ENU
_ _
total i
all exist user ENU ENU = ∑
Maximum HSUPA user number
UL threshold of Conv AMR service
UL threshold of Conv non_AMR service
UL threshold of other services
UL Handover access threshold
Dl HSUPA reserved factor
ADD CELLCAC
E-DPCCH Ec/No and E-DPDCH
Ec/No are calculated based on
DPCCH Ec/No
l ENU admission check
l Iub transmission resource admission check
l NodeB credit resource admission check
NodeB Max Hsupa User Number
2 2
0 02 2( / ) ( / )ec ed
c HSUPA c DPCH
c d
E N E N β β
β β
+=
+
MBMS Admission Check Procedure
l Power resource admission check
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MBMS descend power RAB priority
threshold
ADD CELLLDR
l Code resource admission check
l Iub transmission resource admission checkl NodeB credit resource admission check
Mechanism of downgrading power for MBMSadmission:
" For a high priority MBMS service, the needed power is the maximum
transmit power of FACH. DL threshold of oth er serv ices is used
for comparison.
" For a low priority MBMS service, the needed power is the maximum
transmit power of FACH. LDR threshold is used for comparison.
If the admission check fails, the needed power is reduced to the
minimum power of FACH.
maxmax, P Thd P P other mbms HSPAnon ×<∆+−
maxmax, P Thd P P ldr mbms HSPAnon ×<∆+−
maxmin, P Thd P P ldr mbms HSPAnon ×<∆+−
Intelligent Access Control
Failed
RRC connection processing
Failed
RRC connection
request
Admission
algorithm DRD Redirection
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Preemption
Queuing
DRD
Admissionalgorithm
Succe
eded
Failed
Failed or not
supported
Failed or not
supported
Service requestdenied
Service requestadmitted
Failed
Succ-
eeded
Succ-
eeded
Succ-eeded
FailedSucc-eeded
Succeeded Succeeded
RAB processingIu Qos Negotiationalgorithm switch
UE capability
RAB establishmentRAB modification
Inbound relocation
Ratereconfigurationhard handover
Cell loadinformation list LIT
Scenario
LDM CRM Others
DCCC
algorithm switch
Rate
negotiation
PS domain:maximum ratenegotiation
PS and CS
domains:
initial ratenegotiation
PS domain BEservice:
target ratenegotiation
Load admission
Code resource
admission
Iub resource
admission
Credit resourceadmission
YMBMS service
Y Y Y YHSUPA service
Y Y Y YHSDPA service
Y Y Y Y YDCH service
DRDQueuingPreemptionRAB DownsizingIu QoS Negotiation
Triggered by admission
check failure due to the
limitation of EUN, user
number and Iub
transmission
Triggered by admission
check failure due to the
limitation of power, code and
credit resource
Load Reshuffling
Power Iub Transmission NodeB Credit
Code Resources EUN
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Resources Resources Resources
Handover DownsizingRAN-CN
Renegotiation
IRAT
HO
IF
HO
DCCC
AMRC
For
PS Streaming
Service Quality
UnchangeService Quality
Downgrade
CS
PS
Load Reshuffling (LDR)
Monitoring load, trigger
the actions
corresponding to basiccongestion
Code Resources EUN
Code
Reshuffling
MBMS
Power Downgrading
! Code reshuffling only due to code limitation is supported in RAN6.0.
! MBMS power downgrading only due to power limitation is supported in RAN6.0.
Available Reshuffling Actions And Objects
Iu QoS Code MBMS PowerAMRInter-Inter-
BE RateInter-
LDR Actions
UL/DLResource
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*
*
*
*
X
X
X
N.A.
*
*
Iu QoS
Renegotiation
X
X
X
X
X
X
*
N.A.
XX
Code
Reshuffling
X
N.A.
X
X
X
X
X
N.A.
*
N.A.
MBMS Power
Downgrading
X
X
*
*
X
X
X
N.A.
*
*
AMR
Reduction
*
*
*
*
*
*
X
N.A.
*
*
RAT PS
HO
*
*
*
*
*
*
X
N.A.
*
*
RAT
CS HO
*
*
*
*
*
*
*
N.A.
*
*
BE Rate
Reduction
*
*
X
X
X
X
X
N.A.
*
*
Inter
Freq HO
ULENU
UL
DL
DLIub TransportResource
DL
UL
NodeB Credit
DL
ULCode
Resource
DL
ULPowerResource
X
X
X
*
Iu QoS
Renegotiation
X
X
X
*
Code
Reshuffling
*
N.A.
N.A.
N.A.
MBMS Power
Downgrading
X
X
X
*
AMR
Reduction
X
*
*
*
Inter-
RAT PS
HO
X
X
X
*
Inter-
RAT CS
HO
X
X
X
*
BE Rate
Reduction
X
*
*
*
Inter-
Freq HO
LDR Actions
MBMS
HSUPA
HSDPA
DCH
Object
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Load Reshuffling Due To Code Limitation
l Trigger condition
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gg
Cell SF reserve threshold
Max user number of code adjust
ADD CELLLDR
l Actions
Minimum available SF > reserved SF_Thd
& Code reshuffling
& BE rate reduction
Load Reshuffling Due To NodeB Credit Limitation
l Trigger condition
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gg
l Actions
, , , _ N o de B U L N od eB cu rr en t U L L dr U LC C T hr − ≤
, , , _ N od e B D L N o d eB cu r re n t D L L d r D LC C T h r − ≤
In RAN6.0, only NodeB level
Credit is supported
& UL/DL separate
& Inter-RAT PS/CS HO
& BE rate reduction
Load Reshuffling Due To ENU Limitation
l Uplink
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resCCH DCH DL N N N _ +=
trig ldr
Max
UL
Thr K
K _ >=η
UL
CCH
UL
DCH
UL
Stream H
UL
BE H
UL
HSUPA
UL K K K K K K ++++= −−
p
l Downlink
& For R99 cell
ldr dchresCCH DCH Thr N N N −⋅>+ max _
& For HSDPA cell
+If ENU based DL LDR is enabled, HSDPA users shall not be
selected to perform load reshuffling actions.
& ENU based UL LDR
Service Differentiation Enhancement
l THP consideration
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The values of RAB Integrate Priority are set according to the Integrate Priority Config ured Reference parameter as follows:
' If the value of the parameter is set to Traffic Class, the integrate priority abides by the following rules:
- Classes of services: conversational -> streaming -> interactive -> background
- Services of the same class: priority based on Allocation/Retention Priority (ARP) values
- Only for the interactive service of the same ARP value: priority based on THP
- Services of the same class and priority: HSDPA or DCH service preferred on the basis of the value of the
Indicator of Carrier Type Priority parameter
' If the value of the parameter is set to ARP, the integrate priority abides by the following rules:
- ARP1 -> ARP2 -> ARP3 % -> ARP14
- Same ARP value: conversational -> streaming -> interactive -> background
- Only for the interactive service of the same ARP: priority based on THP
- Services of the same ARP, class and THP (only for interactive service ): HSDPA or DCH service preferred
on the basis of the value of the Indicator of Carrier Type Priority parameter
co s de at o
# For interactive services, differentiate the priority through THP in the case of same ARP.
# Applied to determine the integrate priority
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Thank YouThank You
Mar 2007
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Apr. 2006
Node B Products of Huawei
Huawei HSUPA Feature in RAN6.0
HUAWEI TECHNOLOGIES CO., LTD.
www.huawei.com
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
HSUPA Key Technologies
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
Configuration and Features
Each cell can support R99, HSUPA or R99+HSUPA
E DCH 10ms TTI is supported the peak data rate up to 1 4Mbps in the application
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E-DCH 10ms TTI is supported, the peak data rate up to 1.4Mbps in the applicationlayer (1.92Mbps in physical layer) can be reached in RAN 6.0.
Support 20 simultaneous HSUPA users per cell in RAN 6.0.
RAN 6.0
! Interactive / Background / Streaming
mapping on E-DCH
! E-DCH OLPC
! RGCH, AGCH, HICH power control! Basic admission control
! Pre-emption / queuing
! Scheduling based on RTWP
! Iub flow control
! Load Control
! Mobility Management
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n Interactive , Background and Streaming service could be mapped onto E-DCH.
n The bit rate thresholds are sed
HSUPA Channel Mapping
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n The bit rate thresholds are used.
RABs with the maximum uplink bit rate higher than or equal to the threshold will be
mapped onto E-DCH.
The bit rate thresholds (UL streaming threshold on HSUPA , UL BE traf fic threshold
on HSUPA) are OM configurable.
n One switch (PS_STREAMING_ON_E_DCH_SWITCH ) is available for operator todisable the mapping of streaming service onto E-DCH.
Interactive
Background
Streaming
mapping RB on DCH
RB on HS-DSCH
RB on FACH
RB on E-DCH
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
& Intelligent Access Control
& Admission Control
HSUPA Key Technologies
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
Intelligent Access Control
Failed
Succeeded Succeeded
RRC connection processing
Failed
RRC connection
request
Admission
algorithm DRD Redirection
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Preemption
Queuing
DRD
Admissionalgorithm
Succe
eded
Failed
Failed or not
supported
Failed or not
supported
Service requestdenied
Service requestadmitted
Failed
Succ-
eeded
Succ-
eeded
Succ-eeded
FailedSucc-eeded
RAB processingIu Qos Negotiation
algorithm switch
UE capability
RAB establishmentRAB modification
Inbound relocation
Ratereconfigurationhard handover
Cell loadinformation list LIT
Scenario
LDM CRM Others
DCCC
algorithm switch
Rate
negotiation
PS domain:maximum ratenegotiation
PS and CS
domains:
initial ratenegotiation
PS domain BEservice:
target ratenegotiation
Load admission
Code resource
admission
Iub resource
admission
Credit resourceadmission
YMBMS service
Y Y Y YHSUPA service
Y Y Y YHSDPA service
Y Y Y Y YDCH service
DRDQueuingPreemptionRAB DownsizingIu QoS Negotiation
Triggered by admission
check failure due to the
limitation of EUN, user
number and Iub
transmission
HSUPA Uplink Radio Resource Admission Check
UL/DL algorithm1
Algorithm
DCH
Type
Based on power or interference
(prediction)
RAN6.0RAN5.1Remark
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!Control the user number mapped
on E-DCH
User number checkHSUPA
Control the user number mapped on HS-
DSCH
User number checkStreaming
Check the power usage for HSDPA BEPower usage check
Check the aggregated Streaming traffic
provided bit rate
PBR admission check
BE
!Based on power (prediction)DL algorithm1MBMS
!Based on the equivalent number of
users
UL algorithm2
Check the aggregated BE traffic provided
bit rate
PBR admission check
Power usage check
User number check
UL/DL algorithm2
UL/DL algorithm2
Check the power usage for HSDPA
Streaming
Control the user number mapped on HS-
DSCH
HSDPA
Based on power or interference (without
prediction)
Based on the equivalent number of users
(prediction)
HSUPA Admission Check Procedure
l User number admission check
l ENU admission check NodeB Max Hsupa User Number
ADD NODEBALGOPARA
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HSUPA access request
Get the total ENU of all
existing users.
Calculate the increment of the
new incoming HSUPA user
Forecast the ENU load
Compare the forecast ENUload with the threshold
max
total new ENU ENU
ENU
+
new ENU
_ _
total iall exist user
ENU ENU = ∑
Maximum HSUPA user number
UL threshold of other services
UL handover access threshold
ADD CELLCAC
E-DPCCH Ec/No and E-
DPDCH Ec/No are calculated
based on DPCCH Ec/No
l Iub transmission resource admission check
l NodeB credit resource admission check
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
HSUPA Key Technologies
& Node B Controlled Scheduling
& Iub Flow Control
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
Node B Controlled Scheduling(1)
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Receiver
Buffer Status
(TEBS, HLBS)
UPH
HLID
Scheduling
Information
Serving Cell
E-DPDCH
Receiver
TEBS,
Happy_Delay_
Condition
Power
Current SGHappy Bit
Serving Cell
E-DPCCH
Node B Controlled Scheduling(2)
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Serving Cell
A b
s o l u
t e G
r a n t R
el a t i v e Gr an t
Receiver Receiver Receiver
R e l a t i v e G
r a n t
S c h
e d u l i n
g I n f o
RoT Measurement
Unhappy
L
Non Serving Cell
R e l a t i v
e G r a n t
RoT Measurement
Happy
JUnhappy
L
Scheduling Info
Happy/Unhappy
UE's SPI, GBR
ThresholdEstimated load
Node B Controlled Scheduling(3)
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A b s
o l u t e G r a n t
R G U
P
Receiver
Unhappy
L
Receiver
Receiver Unhappy
L
Receiver
Priority = FUN
(Rreq, Ravg, SPI)
Priority = FUN (Happy Bit, RSN,
Rcur, Ravg, SPI)
AG Threshold
Average Rate Initial Value
Average Rate Smooth
Factor
SET MACEPARA
Sort Rate Weight
Sort RSN Weight
Sort GBR Switch
Effective Rate Smooth
Factor
SET MACEPARAMaximum Target Uplink Load Factor
ADD CELLHSUPA
ThresholdEstimated load
Node B Controlled Scheduling(4)
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Threshold
R G
D O W N
A b s o l u t e G
r a n
t Receiver
Happy
J
Receiver Receiver
Receiver Unhappy
LReceiver
ThresholdEstimated loadEstimated loadEstimated load
Node B Controlled Scheduling(5)
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Threshold
R G D O W N
R G D O W
N
Receiver
Happy
JReceiver Receiver Unhappy
L
Receiver Receiver
Iub Flow Control (1)
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Iub flow control associates with NodeB scheduler
- based on the Iub buffer occupancy status
Flowcontrol
Marked UEs
R
e l a t i v
e g r
a n t
Buffer
occupancy status R e l a t i v
e G r a n t
NodeBControlled
Scheduler
Buffer Occupancy Ratio
Threshold
IUB buffer Occupancy Ratio
Hysteresis
SET MACEPARA
Iub Flow Control (2)
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Flow
controlthe target uplink
load factor adjusting
command
Iub bandwidth
Total data rates
NodeB
Controlled
Scheduler
Iub flow control associates with NodeB scheduler
- based on the target uplink load adjustment
Load Factor Adjusting
Threshold
Load Factor Adjusting Step
SET MACEPARA
Simulation Results " Iub Flow Control
Scenario 1:
Iub bandwidth isn#t limited
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, the throughput of system
, the throughput of Iub interface
Scenario 2:
Iub bandwidth is 3M, buffer is 1M
, the throughput of system
, the throughput of Iub interface
Scenario 3:
Iub bandwidth is 1M, buffer is 0.5M
, the throughput of system
, the throughput of Iub interface
The system makes full use
of the Iub bandwidth
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
HSUPA Key Technologies
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
HSUPA Downlink Power Control for E-AGCH-E-RGCH-E-HICH (1)
n Two Schemes
& Constant transmit powerE-AGCH HPC Mode
SET MACEPARA
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& Constant transmit power
& DPCH based dynamic power control
PO P P CPICH P += −
Node B
UE
P - C P I C H
E - AG C H
E - R G C H
E - H I C H
P - C P I C
H E - R G C H
E - H I
C H
Node B
PO is the power offset parameter,which can be configured for each
channel according to the RL state
Constant Transmit Power
E-RGCH HPC Mode for Service Radio Links
E-RGCH HPC Mode for Non-service Radio Links
E-HICH HPC Mode for Service Radio Links
E-HICH HPC Mode for Non-service Radio Links
E-AGCH Power Offset
E-RGCH Power Offset for Service Radio Links
E-RGCH Power Offset for Non-service Radio Links
E-HICH Power Offset for Service Radio Links
E-HICH Power Offset for Non-service Radio Links
SET MACEPARA
HSUPA Downlink Power Control for E-AGCH-
E-RGCH-
E-HICH (2)
DPCH Based Dynamic Power Control
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Node B
UE
Dat a1 T P C T F C I Dat a2 P i l o t E -HIC HE -RGC HE - AGC H
Dat a1T P C T F C I Da
t a2 P i l o
t E -HIC HE -RGC H
D a t a1 T P C T F C I D
a t a 2 P i l o t
E - H I C H
E - R G C H
Node B
RL Set
The same color means that there
will be soft combination in UE
SHOTPC PowOffset FUNC P P ∆++=
,...)(
n Based on the power of TPC
n.SHO: SHO compensation, whichare calculated for E-AGCH, E-RGCH.
n PowOffset: Power control
parameter, which are configured foreach channel in different RL states.
E-AGCH Power
E-RGCH Power for Service Radio Links
E-RGCH Power for Non-service Radio LinksE-HICH Power for Service Radio Links
E-HICH Power for Non-service Radio Links
SET MACEPARA
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
HSUPA Scheduler
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
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Load Reshuffling in HSUPA Cell (Radio Resource)
l Uplink
RTWP based UL LDR
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trig ldr N Thr
TWP
P RTWP _ >
−=η
sup _ max max( min( , ))
non hspa GBR h a res hspa total ldr P GBP P P P Thr − − −+ + > ⋅
Reserved power for HSUPA
related DL downlink control
channels ( E-AGCH/E-RGCH/E-HICH)
Dl HSUPA reserved factor
ADD CELLCAC
& RTWP based UL LDR
&
Power based DL LDR
l Downlink
Load Reshuffling in HSUPA Cell (ENU)
l Uplink
& ENU based UL LDR
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resCCH DCH DL N N N _ +=
trig ldr
Max
UL
Thr K
K _ >=η
UL
CCH
UL
DCH
UL
Stream H
UL
BE H
UL
HSUPA
UL K K K K K K ++++= −−
l Downlink
& For R99 cell
ldr dchresCCH DCH Thr N N N −⋅>+ max _
& For HSDPA cell
+
If ENU based DL LDR is enabled, HSDPA users shallnot be selected to perform load reshuffling actions.
& ENU based UL LDR
HSUPA
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Configuration And Features
HSUPA Channel Mapping
Access to HSUPA Service
HSUPA Scheduler
HSUPA Power Control
HSUPA Load Control
HSUPA Mobility Management
Performance Simulation
Deployment Strategy
HSUPA
HSUPA Mobility Management (1)
l Support intra/inter-frequency and inter-RAT handover
l Keep the AS of HSUPA the same as DCH in RAN 6.0
Switch to DCH if a non HSUPA cell is added into AS
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/ Switch to DCH if a non HSUPA cell is added into AS
/
Switch to E-DCH when all non HSUPA cells in AS are removed
Cell 2(R99)Cell 1(HSUPA) Cell 2(R99)Cell 1(HSUPA)
E-DCH
1a event triggered
DCH DCH
1b event triggered
Cell 2(R99)Cell 1(HSUPA)
E-DCH
l Inter-RAN SHO solution in RAN6.0
/ Switch to DCH when a DRNC cell is added into AS
/ Switch to E-DCH when all cells in different RNCs removed
Iur
CN
SRNC DRNC
Iu
Uu
CN
SRNC DRNC
Iu
Uu
Iur
CN
RNCSRNC
Iu
Uu
E-DCHE-DCH
DCH
1a event triggered
DCH
1b event triggered
HSUPA Mobility Management (2)
l Direct Retry
/ HSUPA service is initiated in R99 cell
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/
Traffic volume increases
/
Periodic Timer
/ Access to an HSUPA cell is rejected due to resource limitation
are set on cell a
Cell b (f2, R99)
Cell a (f1,HSUPA)
UE initiates
HSUPA service
request from cell b
After DRD, UE
HSUPA service
Cell b (f2, R99)
Cell a (f1,HSUPA)
HSUPA Parameters Structure (1)
GlobalParaClass RAB&SRBClassRNC
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E-DPCCH pow er offset
TYPRABOLPC.ClassFRC.Class
Reference E-TFCI Index
Reference E-TFCI Pow er Offset
E-DCH ret ransfer number Probabi l i t y Target Value
Target Number of E-DCH PDU ret ransfer [ t imes]
Maximum Number o f E-DCH PDU ret ransfer [ times]
Maximum E-DCH Power o f fset increase step[0.001dB]
Maximum E-DCH Power Of fset
Minimum E-DCH Power Of fset
E-DCH Power Of fset Per iod[100ms]
CELLSETUP.Class
RadioClass
GlobalParaClass RAB&SRBClass CellClass
CELLHSUPA.Class
TYPRABOLPC.ClassFRC.Class
CELLSETUP.Class
CellClass
CELLHSUPA.Class
Maximum Target Upl ink Load Factor
Target Non-serving E-DCH to Total E-DCH
Power ratio[%]
Code Number for E-AGCH
Code Num ber fo r E-RGCH/E-HICH
HSUPA Parameters Structure (2)
RadioClass
NodeB
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IUB bu f f e r Occupancy Rat io Hys te res i s
MACEPARA.Class
E-RGCH HPC Mode for Non-service Radio Links
E-HICH HPC Mode for Serv ice Radio Links
E-HICH HPC Mode for Non -service Radio Links
E-RGCH Power fo r Serv ice Rad io L inks
E-RGCH Power fo r Non-serv i ce Rad io L inks
E-HICH Pow er for Serv ice Radio Links
E-HICH Power for Non-serv ice Radio Link s
E-RGCH Power Of fset for Serv ice Radio Links
E-RGCH Power Offset for Non-service Radio Links
E-HICH Power Of fset for Serv ice Rad io Links
E-HICH Power Offset for No n-service Radio Links
AG Thresho ld
Averag e Rate Ini t ia l Value
Average Rate Smooth Fac to r
Sor t Rate Weigh t
Sort Rate RSN Weight
Sor t GBR Swi t ch
Ef fec t ive Rate Smoo th Factor
Load Fac to r Ad jus t i ng Step
Buf f e r Occupancy Rat io Thresho ld
Load Fac to r Ad jus t i ng Thresho ld
E-AGCH Po wer
E-AGCH HPC Mode
E-RGCH HPC Mode for Serv ice Radio L inks
CellClass
E-AGCH PowerOf fset
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HSUPA Simulation Result (1)
l Link layer interface evaluation
! The Link layer interface is the basis
AWGN
PA3
PB3
VA30
VA120
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! The Link layer interface is the basis
of system level simulation
-2.6-9.5-2.4-9.4-2.1-9.1-2.5-8.8-3.9-9.7Huawei
-3.1-9.0-3.0-8.9-3.0-8.7-3.0-8.4-4.5-9.5Average
-2.7-8.6-2.8-8.5-2.7-8.4-2.6-8.1-4.2-9.1Max
-3.3-9.3-3.2-9.2-3.4-9.1-3.4-8.8-4.7-10.2MinFRC6
-3.2-10.3-3.0-10.2-3.4-10.1-3.8-9.5-4.5-11.2Huawei
-3.4-10.1-3.5-10.0-4.0-9.9-4.0-9.4-4.8-10.7Average
-2.9-9.7-3.3-9.6-3.8-9.5-3.6-9.0-4.6-10.3Max
-4.0-10.5-3.9-10.4-4.4-10.2-4.3-9.7-5.0-11.3MinFRC1
70%30%70%30%70%30%70%30%70%30%
VehA120VehA30PedB3PedA3AWGNEcNo
HSUPA Simulation Result (2)
l System level simulation assumption
R kV lP t
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21dBmUE Max Tx Power
Category 3: 10ms TTI, 2SF4,Up
to 1.92Mbps
Category 6: 10msTTI,
2SF4+2SF2, Up to 5.76Mbps
Category 3,
Category 6
UE category
Full Buffer Traffic model
inter site distance 1km, 3
section per station
3x3 Wrap-aroundCell deployment
TU3Channel model
Urban Middle CityCOST 231-Hata + 0dBPath Loss
RemarkValueParameters
HSUPA Simulation Result (3)
l Cell throughput vs RoT
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0
0. 2
0. 4
0. 6
0. 8
1
1. 2
1. 4
1. 6
0 2 4 6 8 10RoT(dB)
C e l l T h r o u g h p u t ( M b p s )
DCH
E-DCH 10msTTI
E-DCH 2msTTI
HSUPA Simulation Result (4)
l NRTV on E-DCH vs on DCH
90%
100%
90%
100%
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0%10%
20%
30%
40%
50%
60%
70%
80%
90%
100 150 200 250
Del ay(ms)
C D F ( % )
EDCH
DCH0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
200 400 600 800 1000 1200
Del ay J i tter(ms)
C D F ( % )
EDCH
DCH
10ms TTI, 2SF4, up to
1.92Mbps with GBR of 64K
DCH-128K
E-DCH
DCH
Channel type
Average Data Rate 64K NRTV, 10 user per cellTraffic model
VA30Channel model
PL=138.5+38log10(d/km)Dense urbanEnvironment
RemarkValueParameters
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Deployment Strategy (Single Carrier)
Single Carrier Solution
All cells support HSPA and R99 service.
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HSUPA cell is downlink HSDPA supported.
HSPA users perform soft handover between intra-frequency cells, HSPA
serving cell changes triggered by 1D event
HSPA users starts CM triggered by 2D event and performs inter-RAT
handovers to 2G cell
F1:R99+HSPA
Cell 1
F1:R99+HSPA
Cell 2
Hotspot Multi-carrier Solution
HSPA UE on F1 R99 cells can periodically retry to co-coverage F2 HSPA
Deployment Strategy (Multi-carrier)
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HSPA UE on F1 R99 cells can periodically retry to co coverage F2 HSPA
cells
F1 HSPA users starts CM triggered by 2D event and perform inter-RAT
handover to 2G cell
F2 HSPA users starts CM triggered by 2D event and perform inter-freq
handover to F1 cell
F1:R99
Cell 3
F1:R99
Cell 2
F1:R99+HSPA
Cell 1
F1:R99+HSPA
Cell 4
F2:R99+HSPA
Cell 6
F2:R99+HSPA
Cell 5
1
4 4
1
23
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