Flexi 1Gb BB - HSDPA Aspects

8/10/2019 Flexi 1Gb BB - HSDPA Aspects

http://slidepdf.com/reader/full/flexi-1gb-bb-hsdpa-aspects 1/38

Network Engineering Training Session onex ase an – ep y ep

Part 3 HSDPA allocation, dimensioning & licensing

12.09.2012 Network Engineering

1 © Nokia Siemens Networks 2012For internal use

MBB CS Network Engineering / Krzysztof Mertas / Bartosz Wrobel



General Information

This slide set shall not be considered as an official feature description nor HSPA

performance document. All references to those details in this document are forour convenience onl and shall be double-checked from res ective customerdocuments before any quotations.

This document is not a RAN Dimensioning Guide. All capacity valuesThis document is not a RAN Dimensioning Guide. All capacity values

and performance figures in this document shall be verified from WCDMAand performance figures in this document shall be verified from WCDMARAN documentation.RAN documentation.





Contents

General Introduction

RU30 Licensing aspects

Technical Details

RU30 Baseband dimensioning rules

Common Control Channels Dimensioning

Flexi System Module rel.2

R99 Dimensioning

HSDPA Dimensioning

HSDPA BTS Processin Set resources allocation

HSUPA Dimensioning

HSUPA BTS Processing Set resources allocation



Network Parameters



Impact of RAN2123 on BTS dimensioning

ew mens on ngrulesNew baseband dimensioningRAN2123

ew cens ngaspectsNew licensing aspects

rules for System Module rel.21 Gigabit Baseband

for System Module rel.2







Impact of RAN2123 on BTS dimensioning

rulesNew baseband dimensioningrules for System Module rel.2

RAN21231 Gigabit Baseband Processing capabili ty of System Module Rel.2 is signif icantlyincreased comparing to RU10/RU20

Common Control Channels dimensioning is simi lar as in RU10/RU20• Basic configurations (e.g. 3cells/20km or 6cells/10km) are supported with baseband

resources included in System Module Rel.2 capacity• 48 Rel99 CE licenses are re uired er each ste

R99 dimensioning same as in RU20 On Top

HSPA dimensionin a roach chan e



• New baseband dimensioning rules, HSPA thr., number of users improvement







HSDPA scheduler SM Rel.2 HSDPA scheduler 1/2

In RU30 there is only one type of HSDPA scheduler with System Module Rel.2

roug pu prov e y sc e u er epen s on:• Activated features• Number and type of BTS processing sets (# users and throughput)• HSDPA throughput commissioning (BB resources allocation)

• One HSDPA scheduler supports:

Up to 2 HSDPA schedulers are supported with one SM Rel.2

• p o ac ve users egacy users m xe a n users

• Up to 192 HSDPA DC + MIMO* users• From 1 to 6 cells• Cells from different LCGs covering baseband capacity of SM with activated HSDPA

HSDPA schedulers available for HW Rel.1 same as in RU10/RU20



* RAN1907 DC HSDPA with MIMO 84Mbps moved to RU40



HSDPA scheduler SM Rel.2 HSDPA scheduler 2/2

Operator can activate HSDPA scheduler by HSDPA throughput step commissioning.• The following HSDPA throughput step values are available: from 0 up to 35• Each step refers to 7,2Mbps (e.g. 1- 7,2Mbps; 2- 14,4Mbps, etc)• HSDPA throughput commissioning is optional and if not commissioned, BTS will allocate HSDPAthroughput based on the default rules (please see next slide)

HSDPA thro ughp ut steps Maximum throug hput fo r HSDPAscheduler

0 HSDPA schedulers not activated

Note that table presentsmax baseband throughputand does not take intoconsideration any

, , , , ,

7, 8, 9, 10, 11, 12 84 Mbps13, 14, 15, 16, 17, 18 126 Mbps

19, 20, 21, 22, 23, 24 168 Mbps

m a ons e.g. u

configuration etc.

25, 26, 27, 28, 29, 30 210 Mbps

31,32, 33, 34, 35 252 Mbps

*

* Note that HSDPA licensedthroughput might limitHSDPA commissioned

throughput.

HSDPA_scheduler_throughput =Min {HSDPA_throughput_step * 7.2 Mbps ; Maximum throughput for HSDPA scheduler}



ere:HSDPA_throughput_step = commissioned scheduler throughput Maximum throughput for HSDPA=maximum throughput referred inMbps for corresponding HSDPA throughput step from above



HSDPA scheduler Minimum allocation rule

To assure optimal HSDPA performance BTS checks whether resources allocated for HSDPA are appropriatefor BTS configuration

,allocate lower HSDPA throughput below level specified by minimum allocation rule

Tables below presents minimum allocation rule for HSDPA scheduler for MIMO and non-MIMO cells

Non-MIMO cells Minimum HSDPAthroughput

MIMO cellsper scheduler

Minimum HSDPAthroughputer scheduler

1 – 3 42 Mbps

4 – 6 84 Mb s

1 – 3 84 Mbps

4 – 6 168 Mb s

Minimum allocation rule for HSDPA schedulerfor non-MIMO cells

Minimum allocation rule for HSDPA schedulerfor MIMO cells





HSDPA scheduler HSDPA baseband re uirements

In RU30 HSDPA schedulers do not consume Rel99 CE licenses but depending on commissioned HSDPAthroughput HSDPA schedulers would limit the number available subunits.

Module Rel.2 and corresponding HSDPA baseband capacity utilization.

Combined Maximum throughput for HSDPA baseband capacity reservation Module Rel.2 (number of subunits)

0 Mbps HSDPA schedulers not activated42 Mbps 284 Mbps 2

126 Mbps 3168 Mbps 3210 Mbps 4252 Mbps 4

ps336 Mbps 5378 Mbps 6

420Mbps 6 504 Mbps 7

Note that table presents combined maximum throughput for HSDPA schedulers located at given SM rel.2For example :



1) maximum throughput for 1 st HSDPA scheduler =42Mbps ; maximum throughput for 2 nd HSDPA scheduler=84Mbps , combined maximum throughput for HSDPA schedulers = 126Mbps (42Mbps + 84Mbps);2) maximum throughput for 1 st HSDPA scheduler =42Mbps ; 2 nd HSDPA scheduler not activated ,combined maximum throughput for HSDPA schedulers = 42Mbps



HSDPA schedulerHSDPA - Formula to calculate HSDPA Subunit Consum tion

• Baseband capacity (subunits) required by HSDPA can be calculated according to the formula below:

* _ _ _ - _

subunits_for_HSDPA_throughput } + Number_of_LCGs * 0,25

Where:

• MIMO_cells = number of HSDPA cells with MIMO activated

• non-MIMO_cells = number of HSDPA cells without MIMO

• = _ _ _

• Number_of_LCGs = number of LCGs with HSDPA resources that are located at System Module Rel.2.In case HSPA frequency layer mapping to HW is used, 0.25 is applicable to both System Modules Rel.2





HSDPA schedulerHSDPA - Formula to calculate HSDPA Subunit Consum tion

• Baseband capacity (subunits) required by HSDPA can be calculated according to the formula below:

* _ _ _ - _


HSDPA resources

Amount of MIMOHSPA and non-MIMO

HSPA cellsHSDPA throughput Number of HSPA

LCGs





HSDPA schedulerHSDPA – Number of LCGs *0 25 subunit

Subunit s_for_HSDPA = Max { Round u p ((2 * MIMO_cells + non-MIMO_cells) / 6) + 1 ;


• Number_of_LCGs = number of HSPA LCGs using System Module Rel.2 HSDPA scheduler

resources

LCG 2 - HSPALCG 1 - HSPA

1) Two HSPA LCGs (all HSPA cells form LCG2 served byExtension System Module

- -

2) Two HSPA LCGs

or examp e:

Master SM rel.2 Extension SM rel.2Master SM rel.2

Master SM Scheduler(s) – 0,25 subunit (LCG1 HSPA cells)

Extension SM Scheduler(s) – 0,25 subunit (LCG2 HSPA cells)

as er c e u er s – x , su un(LCG1 + LCG2 HSPA cells)

4) One HSPA LCG + one R99 LCG3) HSPA mapping to HW (One LCG )

Master SM rel.2

LCG 1 - HSPA LCG 2 – R99

Master SM rel.2 Extension SM rel.2

LCG 1 - HSPA



aster c e u er s – , su un t ce sMaster SM Scheduler(s) – 0,25 subunit (LCG1 HSPA cells)

Extension SM Scheduler(s) – 0,25 subunit (LCG2 HSPA cells)



HSDPA scheduler HSDPA - Formula to calculate HSDPA Subunit Consum tion

Example: - 3 + 3 + 3 configuration , Rel. 2 SM & RF Modules, 1 LCG

’- , , ,

= * - _ _ _ _


MIMO_cells = 3 (MIMO is on f1)

non-MIMO_cells = 3 (cells in f2 are HSDPA non MIMO cells)

Subunits_for_HSDPA_throughput = 2 subunits

Number_of_LCGs = 1 Local Cell Group

Subunits_for_HSDPA = Max { Roundup ((2 * ? + ?) / 6) + 1 ; ? } + ? * 0,25

= Max {? ; ?} + 0,25 = ? + 0,25 = ?





HSDPA scheduler HSDPA - Formula to calculate HSDPA Subunit Consum tion

Example: - 3 + 3 + 3 configuration , Rel. 2 SM & RF Modules, 1 LCG

’- , , ,

= * - _ _ _ _


MIMO_cells = 3 (MIMO is on f1)

non-MIMO_cells = 3 (cells in f2 are HSDPA non MIMO cells)

Subunits_for_HSDPA_throughput = 2 subunits

Number_of_LCGs = 1 Local Cell Group

Subunits_for_HSDPA = Max { Roundup ((2 * 3 + 3) / 6) + 1 ; 2} + 1 * 0,25

= Max {3 ; 2} + 0,25 = 3 + 0,25 = 3,25





HSDPA scheduler Summar

System Module Rel.2 HSDPA scheduler description

Max. number of Active Users perHSDPA scheduler

Max number of cells assign toHSDPA scheduler Max scheduler throughput

(196 DC + MIMO users *) 6 252 Mbps

System Module Rel.2 description

Max number of HSDPA Max number of HSDPA Max number of Max HSDPA peak

Module Rel.2 Module Rel.2

System Module Rel.2

System Module Rel.2 /

2480 (392 DC + MIMO

users *) 12 (6 cell per 504 Mbps (252 Mbps

Tables above do not consider TUP max HSDPA throughput limitation



* RAN1907 DC HSDPA with MIMO 84Mbps moved to RU40





RU30 System Module rel.2 Tcell GroupingExem lar confi urations 1/5

f1 f1f2 f2

System Module

modules

System Module

RFmodules * Conditions for DC

HSDPA not met e.g.lack of DC HSDPAlicense

12 HSDPA cells, DC HSDPAactivated, 2 HSDPA schedulers

12 HSDPA cells, DC HSDPA notactivated*, 2 HSDPA schedulers

Tcell =1

Tcell =0

Tcell =2

Tcell =4

Tcell =3

Tcell =5f1

Scheduler 1 Scheduler 2

Tcell =

1

Tcell =

0

Tcell =

2

Tcell =

4

Tcell =

3

Tcell =

5f1


Tcell =1

Tcell =0

Tcell =2

Tcell =4

Tcell =3

Tcell =5f2 Tcell =

1Tcell =

0Tcell =

2Tcell =

4Tcell =

3Tcell =

5f2



DC HSDPA Single carrier HSDPA




f1

System Module

modules

System Module

RFmodules

6 HSDPA cells, 1 HSDPA scheduleractivated

6 HSDPA cells, 2 HSDPA schedulersactivated

Tcell =1

Tcell =0

Tcell =2

Tcell =7

Tcell =6

Tcell =8f1

Scheduler 1

Tcell =

1

Tcell =

0

Tcell =

2

Tcell =

4

Tcell =

3

Tcell =

5f1







f1 f1

System Module

RFmodule

System Module

RFmodule

6 HSDPA cells, 1 HSDPA scheduleractivated, DC HSDPA activated

6 HSDPA cells, 1 HSDPA scheduleractivated, DC HSDPA not activated

Tcell =1

Tcell =0

Tcell =2f1

Scheduler 1

Tcell =1

Tcell =0

Tcell =2f1

Scheduler 1

Tcell =1

Tcell =0

Tcell =2f2 Tcell =

6f2 Tcell =7

Tcell =8



Note: Tcell configuration is also proper

for single carrier HSDPA (when DCHSDPA is not activated)






f1 D P A

f1

f4

f3 D C

H S D P A

D C

H S

f3

RFmodules

System Module

RFmodules

RU30 EP2 P8

System Module

12 HSDPA cells, 2 HSDPA schedulers activated, DCHSDPA activated (f2,f3,f4) Scheduler 2

12 HSDPA cells, 2 HSDPA schedulers activated,DC HSDPA activated (f2,f3)

Scheduler 2Scheduler 1

=

Tcell =4

Tcell =3

Tcell =5f1

==

Scheduler 1

Tcell =

Tcell =4

Tcell =3

Tcell =5f1f2

ce =1

ce =0

f3Tcell =

0Tcell =

1

6

Tcell =6

1

0

f3 Tcell =1

Tcell =0 f3

9

Tcell =9

2 Tcell groups assignedto one scheduler -> up tothree cells per Tcellgroup can be supported(still up to six cells are

Scheduler 1

Tcell =1

Tcell =0

Tcell =2



f4 Tcell =0

Tcell =1 f4 Tcell =

9

supported totally).

f3Tcell =

0Tcell =

1Tcell =

2



HSDPA BTS Processing Set resources

allocation





HSDPA BTS Processing Set resources allocationHSDPA BTS Processin Set ro erties

• HSDPA BTS processing set specifies: – Maximum number of HSDPA users – Maximum HSDPA throughput

HSDPA rocessin set Max number of HSDPA users Max HSDPA throughput perper

HSDPA BTS processing set 1 32 7,2 Mbps

process ng se ps

HSDPA BTS processing set 3 72 84 Mbps







HSDPA BTS Processing Set resources allocationHSDPA throu h ut distribution 1/2

HSDPA throughput distribution

• Total HSDPA licensed BTS throughput (maximum licensed BTS HSDPA throughput ) is distributed amongthe available HSDPA schedulers. Distribution of total HSDPA BTS throughput between schedulers is

proportional to "Maximum Throughput per HSDPA” scheduler commissioned values ( HSDPA Throughput

• In case when only one HSDPA processing set 1 or set 2 was purchased, then the entire licensed throughputwill be assigned to one scheduler

• In case when only one HSDPA processing set 3 was purchased, then the total licensed throughput can beshared between multiple schedulers (up to four).





HSDPA BTS Processing Set resources allocationHSDPA throu h ut distribution 2/2

HSDPA throughput distribution

• If there are only HSDPA Processing Set 1 licenses present in BTS, the division of licensed throughput isdone for each scheduler according to the following formula:

Scheduler_licensed_throughput = Round_down { Number_of_HSDPA_Processing_Sets * (Scheduler_HSDPA_throughput_step / Total_number_of_HSDPA_throughput_step_per_BTS ) } * 7,2 Mbps

• If there are HSDPA Processing Set 2 and HSDPA Processing Set 3 licenses in BTS, the division oflicensed throughput for each scheduler is done according to the following formula:

Scheduler_licensed_throughput = Round_down { Number_of_HSDPA_Processing_Sets_ 2 +4*Number_of_HSDPA_Processing_Sets_ 3 ) * ( Scheduler_HSDPA_throughput_step /Total_number_of_HSDPA_throughput_step_per_BTS ) } * 21 Mbps

If after calculations presented above throughput for all schedulers is lower than total licensed throughput inthe BTS, the remaining throughput is distributed between schedulers with non-zero commissioned

throughput. Schedulers are prioritized in the following order:a c e u er w owes va ue o cense roug pu v e y comm ss one roug pu ;b) System Module Rel.2 scheduler. FSM_1 (Master System Module) is prioritized over FSM_2

(Extension System Module).Distribution of remaining throughput is done iteratively with resolution 7.2Mbps or 21Mbps depending on



. ,sets 0 Mbps as throughput to all schedulers.



HSDPA BTS Processing Set resources allocationHSDPA throu h ut distribution exam le

Example:BTS configuration with two System Modules and four HSDPA Processing Sets:• FSM_1: Flexi System Module Rel.2• FSM_2: Flexi System Module Rel.2

• 3x HSDPA Processing Set 2 (3x 21Mbps) and 1x HSDPA Processing Set 3 (1x 84Mbps) licenses available.Total licensed throu h ut is 3x21 + 1x84 = 147 Mb sBTS has two HSDPA schedulers activated with following commissioned throughput:• FSM_1_Scheduler_#1 HSDPA Throughput Step= 6 (42Mbps)• FSM_2_Scheduler #1 HSDPA Throughput Step= 18 (126Mbps)

Solution: According to previous formulas scheduler licensed throughput is calculated as follows:• = + * * + * = _ _ _• FSM_2_Scheduler #1 = Round_down { ( 3 + 4* 1) * (18 / (6+18 )) } * 21 Mbps = 105Mbps

21+105=126 Mbps

147 Mbps - 126Mbps = 21 Mbps is further distributed with prio to scheduler having lowest value of licensedroug pu v e y comm ss one roug pu :

• FSM_1_ Scheduler #1: 21Mbps / 42Mbps = 0.5• FSM_2_ Scheduler #1: 105Mbps / 126Mbps = 0.83



0.5 < 0.83, thus the remaining 21Mbps is allocated to FSM_1_ Scheduler #1.



HSDPA BTS Processing Set resources allocationHSDPA users distribution

HSDPA active users distribution

Total licensed HSDPA users is controlled on BTS level and it can be divided between LCGs according tocommissioned share

• Commissioning share option ( HSDPA user share ) defines the guaranteed HSDPA user capacity for eachLCG

• If commissioning is not done then user amount will be equally distributed among LCGs

For example:

• 1 HSDPA BTS processing set 3 license was activated, one LCGo It means that available user amount is 72 users. 72 HSDPA users are available for LCG

• 1 HSDPA BTS processing set 3 license was activated, two LCGso Operator can commission for example 20% of all available users to LCG1 and 40% to LCG2 and this

mean that remaining 40% is common for both LCGs and can be shared freely between themo In case when no commissioning is done, whole available amount of users is divided equally (50% /

50%) per both configured LCG





Network Parameters

RAN2123 – 1 Gigabit Baseband







New network planning parametersHSDPA BTS rocessin set 1

Abbreviated name numberOfHSDPASet1

arame er name process ng se

Data type -

Description Parameter defines number of HSDPA processing set 1 licenses. User shall be able toselect how many HSDPA licenses shall be available in BTS. Based on thatinformation required amount of HSDPA licenses are downloaded to BTS from NetAct.Parameter have additionally special value -1 which means that parameter is not inuse. Note: Not applicable for rel1 HW.

Parameter group -Classification Operation and Maintenance

Range and s tep 0 - 99

Default value -

One HSDPA BTS Processing Set 1 allows to reach 32 HSDPA users and 7,2Mbps

Note that HSDPA BTS Processing Set 1 is not valid together with HSDPA Processing Set 2 and/orHSDPA BTS Processin Set 3





New network planning parametersHSDPA BTS rocessin set 2

Abbreviated name numberOfHSDPASet2

arame er name process ng se

Data type -

Description Parameter defines number of HSDPA processing set 2 licenses. User shall be able toselect how many HSDPA licenses shall be available in this BTS. Based on thatinformation required amount of HSDPA licenses are downloaded to BTS from NetAct.Parameter have additionally special value -1 which means that parameter is not inuse. Note: Not applicable for rel1 HW.

Parameter group -Classification Operation and Maintenance

Range and s tep 0 - 99

Default value -

One HSDPA BTS Processing Set 2 allows to reach 72 HSDPA users and 21Mbps







New network planning parametersHSDPA user share

Abbreviated name shareOfHSDPAUser

arame er name user s are

Data type %

Description Parameter defines how many licensed HSDPA users belongs to certain LCG. Sum ofLCG shares shall not exceed 100%, but can be less than 100%. If sum is less than100%, then remaining part is so called common pool. Granularity is one user.Parameter have additionally special value -1 which means that parameter is not inuse. Note: Not applicable for rel1 HW.

Parameter group -Classification LCELGW

Range and s tep 0 - 100; 1

Default valueDefault value of parameter is 100% divided by number of LCGs (max number LCGsin WN7.0 Flexi is 4). Following default values will be used: 1 LCG => 100%, 2 LCGs

, ,

Total HSDPAlicensed users

Sum of HSDPA users allo wed by allavailable HSDPA processing sets

Note that ProcessingSet 1 is not v alid

together w ithProcessing Set 2



LCG 2LCG 1

X HSDPA users Y HSDPA usersDefined HSDPA li censedusers distribution among

LCGs









Documents

Flexi 1Gb BB - HSDPA Aspects