RB PArking feature parameter optimization

1. RB Parking
20.01.2016 Bektaş Şahin – Ahmet Aşıcı
Network Optimization Management
C3 - Company Confidential

2. • RB Parking feature is aimed towards relieving network in events and
organization where congestion is inevitable.
• 2 trials are conducted:
– FB Arena  Euroleague game, minor improvements observed. Less congested.
– Ankara Arena  CHP Congress, major improvements observed. Extremely congested.
• 2 Indoor NodeB’s are selected for each event.
• Comparisons are done with similar events from the past.
– Another Euroleague game in FB Arena.
– Another congress in Ankara Arena.
• No congestion  More traffic, better RAB and RRC Success rates for
both Voice and Data.
– Traffic increased around 25-30 % in Ankara Arena.
– Success rates are increased by up to 90 % again in Ankara Arena.
Executive Summary
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RRC_Connection_Request RRC_Connection_Accept
RAB_Assignment_Req
RAB_Assignment_Fail
(Congestion)  Assign RAB
with 0kbps
Move to FACH_Parking State
for 30-60s

3. Detailed Analysis
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4. Event Date RB Parking
AKP
Congress
12.09.2015 Off
CHP
Congress
16.01.2016 On
Ankara Arena - Effect
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Less RRC Congestion
Similar
CS
RAB
Attempts
More Traffic
• Less RRC attempts
decreases RRC conges
 RRC Storm Effect.
• More room left for :
• RAB Attempts
• RAB Suc. Attmp
• More Traffic
• Better User Exp

5. Event Date RB Parking
AKP
Congress
12.09.2015 Off
CHP
Congress
16.01.2016 On
Ankara Arena - Traffic
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6. Ankara Arena – PS
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Event Date RB Parking
AKP
Congress
12.09.2015 Off
CHP
Congress
16.01.2016 On
• Both RRC and RAB success rates
were improved.
• Also RRC attempts were greatly
decreased.
• RAB fails are also improved howev
this is due to RAB fails being converte
to RAB 0kbps assigned UE’s.
• 5000 RB Parking Attempts were
made with 92 % Success rate.

7. Ankara Arena - CS
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Event Date RB Parking
AKP
Congress
12.09.2015 Off
CHP
Congress
16.01.2016 On
• Both RRC and RAB fail rates are g
decreased.
• Also, even though more CS traffic
generated, less number of UE’s failed
RAB and RRC connection.

8. • Only 172 attempts for RB parking was made due to less congestion.
• RB parking positive effects are minimalized in these situations.
FB Arena
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Event Date RB Parking
vs Real
Madrid
30.10.2015 Off
vs
Panathinaikos
30.12.2015 On
Date Attendance TOT_3G_Traf_MB CSTrafficTotal PSRRCEst.Suc.Rate CSRRCConn.Suc.Rate
PSRABEst.Suc.
Rate
VOICERABEst.Suc.
Rate
TotalRRCConnectionSuc.
Rate
Panathinaikos 30.12.2015 9172 22588,37 61,28 98,28% 99,84% 99,90% 98,84% 98,33%
RealMadrid 30.10.2015 12886 23024,92 85,4 90,35% 99,57% 96,41% 98,66% 94,41%
Change - -28,82% -1,90% -28,24% 82,22% 62,80% 97,30% 13,24% 70,17%
PS RAB Est. Suc. Rate WithoutRB Parking
99,90% 99,15%
PS RRC Est. Suc. Rate Attempt WithoutRB Parking Change
18302 18818 2,8%

9. • RB Parking’s positive effects increased as congestion increased.
• In events and organizations RB parking can be considered as a way to
relieve the network and increase it’s efficiency.
• RB Parking grants the network with:
– More room for CS traffic.
– Less PS RRC Congestion
– Better Success rates for both CS and PS.
• In the event of minor congestion, RB parking should be carefully
implemented as it might result with bad User Experience. 1 UE that
cannot be RAB allocated will have to wait for a minute whereas another
RRC attempt might have been succesfully allocated.
Conclusions
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10. Thank you
C3 - Company Confidential

11. • Activation
• SET UUESTATETRANSTIMER: Parking4ADiscardTimer=60;{RNCNAME}
• MOD
UCELLCONNALGOPARA:CellId=CellID,CellConnAlgoSwitch1=RB_PARKING_SWITCH1&PREEMPTED_PS_BE_DO_PARKING_SW
ITCH-1;{RNCNAME}
• Deactivation
• MODUCELLCONNALGOPARA:CellId=CellID,CellConnAlgoSwitch1=RB_PARKING_SWITCH0&PREEMPTED_PS_BE_DO_PARKIN
G_SWITCH-0;{RNCNAME}
MML Commands
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