MBLB Design Presentation Final

RAN2172 MultiBand Load Balancing ntroduction

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Introduction Nokia #a$e se$eral la%ering &eatures t#at can 'e used to 'alance (S)*A load 'etween carriers+ 1+ ,M-S carriers in sa.e sa.e 'and/ #a$ing sa.e co$erage co$erage area and confgured confgured under under co..on sector id •

)irected RRC Connection Setu &eatures

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(S*A la%ering &or ,s in Co..on C#annel

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Multi3'and Load Balancing  MBLB •

(S)*A load 'alancing is included to MBLB Blind (5 and MBLB state transition &eatures

2+ ,M-S carriers carriers in di6erent di6erent 'and/ #a$ing #a$ing di6erent di6erent co$erage areas areas or B-Ss •

Multi Band Load Balancing  MBLB •

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(S)*A load 'alancing is included to MBLB Blind (5 and MBLB state transition &eatures

n certain conditions (S*A la%ering &or ,s in co..on c#annel can 'e used 'etween 'ands also/ re8uires sa.e sector id and .eant to 'e used 'etween cells wit# sa.e co$erage areas9

Additionall% idle .ode settings : di6erent t%e o& ;(5 can 'e used .o$e ,s 'etween 'ands"carriers/ 'ut (S)*A load 'alancing 'etween carriers is done eit#er wit# )RRC or MBLB+

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Multi-Band Load Balancing (MBLB) •

The Multi-Band Load Balancing (MBLB) feature includes 4 components: •

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•

•

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Redirection during RAB setup:

 – either first RAB or AMR RAB for a !" #hich alread$ has an %RT RAB  – &lind hando'er  Redirection during the transition to "LL*+:  – state transitions from "LL,A+ !RA+ or "LL+  – does not include transition from RR .dle mode  – &lind hando'er  Redirection after detecting inacti'it$ in "LL*+:  – inacti'it$ detected for last acti'e / %RT MA-d flo#  – inter-fre0uenc$ hando'er #ith compressed mode measurements Redirection due to Mo&ilit$:  – addition of cell to acti'e set #hich has different preferred la$er definitions  – inter-fre0uenc$ hando'er #ith compressed mode measurements

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Intra-Frequency Measurement Reports •

Blind +ando'er during RAB /etup re0uires the RA+ intra-fre0uenc$ measurement reporting 0uantit$ to &e set to R/

Name

Range Default 

RA+.ntra,re0Mes1uant 3 ("c.o) 5 (R/)

(2"L)

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• • •

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This parameter defines the intra-fre0uenc$ measurement 0uantit$ for RA+ measurements6 .t is defined in /.B55 /.B55&is and /.B57 to the !"6 The !" reports the measurement results in the re0uested 0uantit$ in RA+ messages6 Blind +8 in RAB setup phase (in the MultiBand Load Balancing feature) re0uires this parameter t o &e set to R/6 2hen the 'alue of this parameter is changed from "c%o to R/ the parameters that are no longer used and those that replace them are: .+"c%o/RBMapRR -9 .+R//RBMapRR !"c%oThreshold -9 !R/Threshold

+as an impact upon eisting features: ommon hannel /etup ,ast all /etup +/!A 7 ms TT. ,-*+ •

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"c.o

Description

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MBLB Defnition o Target ells • • • •

Target cells can &e defined for each source cell 8nl$ 5 target cell per R, carrier can &e defined Target cells can &e defined using the A*;. BlindHOTargetCell  parameter  Target cells must &elong to the same R% as the source cell

Name Blind+8Targetell (A*;.)

=

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Range 3 (*isa&led) 5 ("na&led)

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Default  3 (*isa&led)

Description This parameter indicates #hether the neigh&or cell is defined as a target cell for inter-fre0uenc$ &lind hando'er6 8nl$ one target cell per fre0uenc$ can &e defined6

MBLB Target !et"or# Layer • •

MBLB selects the most suita&le la$er using a Preference Score The Preference Score is &ased upon: referred La$er: &ased upon !" capa&ilit$ and ser'ice t$pe6 referred la$ers for different !" capa&ilit$ and ser'ice com&inations can &e specified e6g6 +/*A capa&le !" #ith %RT ser'ice referred Band: increased #eight can &e allocated to specific operating &ands and the operating &and capa&ilit$ of the !" is ta

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77: +/A load state is not ect #ithin the R% data&uild The referred ,re0uenc$ La$er (,L) o&>ect is pointed to &$ each 2"L Multiple ,L o&>ects can &e defined so different 2"L can ha'e different ,L parameter sets The ,L o&>ect includes parameters to define the preferred R, carrier  Name

Range

,L.dentifier  5 to F3 step 5 (2"L)

Name

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Default  3

3 (no reference to ,L o&>ect)

Range

,L.dentifier  5 to F3 step 5 11

R%

3 (no reference to ,L o&>ect) (,L) © Nokia Solutions and Networks 2014

Default  3

2BT/ 2"L 2"L 2"L

PFL"dentifier PFL"dentifier

,L set i ,L set >

  PFL"dentifier

Description This parameter defines the parameter set (,L o&>ect) #hich controls the preferred fre0uenc$ la$er definitions6 These definitions are used to select the correct fre0uenc$ la$er for the !" &ased on t he !" capa&ilit$ and the ser'ice that the !" is using6

Description This parameter is the preferred fre0uenc$ la$er (,L) o&>ect identifier6 .t is a uni0ue identifier for the ,L o&>ect #ithin the controller6 The ,L

FL arameter 'et R/ thresholds used to ma