COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 1

Utilization Calculation analysisAlcatel-Lucent –STC Project – June 2013

TM

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 2

Content

1. RNC CPU load.2. CEM Utilization vs. CEM CPU load.3. Iub load& Utilization-Iub Over IP.4. Iub load-Iub Over ATM.5. IuCS/IuPS Load&Utilization.

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 3

RNC CPU load1

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 4

RAB(Radio Access Bearer) is the processor responsible for handling traffic of users (Voice/R99/HSPA).

TMU(Traffic Management Unit) processor is responsible for handling RRC signalling.

Indicator VS.ApCpuUtilizationAvg (U20202) is used to get the load on AP(Adjunct processor)level.

RAB processors are equally balanced, as loading is being done automatically in case of RAB.

TMU traffic loading is being done manually, so it needs good design to map sites on TMU boards.

Most loaded processor/hour is selected to represent the TMU/RAB utilization.

RNC CPU

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 5

Processors Mapping-12 DCPS Boards(IuOverIP)

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 6

Processors Mapping-10 DCPS boards(IuOverATM)

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 7

NPO Snapshot-RNC CPU Load calculation

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 8

TMU Processor load

RAB Processor load

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 9

CPU Utilization-Hourly

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 10

CEM Utilization/load2

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 11

Normally we have three types of configuration for CEM , one CEM/Two CEMs/Three CEMs per site based on strategy, traffic and number of carriers.

Normal way is to get the DL&UL CEM utilization by dividing CEM load/CEM capacity.

Formula for DL CEM usage is BH(U10310_3_Cum/(U10310_3_Cum+U10310_2_Cum ) ,similar formula exist for UL NodeB level counters.

There is a problem in U10310 counters as DL and UL CEM usage counters don’t include HSPA, it only include R99 usage.

There is counters group U10317 that include all R99/HSPA recourses, but no split for DL and UL.

We are using CEM CPU load to indicate the real usage of CEM (VS_cpuLoad_CEM_Avg 10403) , this was to detect balancing problem between CEM boards CEM Board level indicator .

Most loaded board/hour is selected to represent the site CEM utilization.

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 12

NPO Snapshot-CEM CPU Load calculation

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 13

CEM utilization Vs. load

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 14

CEM load Unbalance-Example

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 15

Iub load&utilization-Iub Over IP3

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 16

- Iub load is calculated on ipif(IP interface) level.

- DL load=UP DL load+CP DL load.

Hourly DL Load in kbits= BH(((8.0*1.024)*(VS_IubIpCPlaneKbytesSent (U3072 ) +VS_IPTrafficInKbytesSentPerIpIf(U3065))))/3600.

- UL load=UP UL load+CP UL load.

- We calculating Max load during day as BH load.

- We aren’t able to get capacity for each site from NPO, Also there is no accurate indicator/counter to get the physical Iub capacity only way is to get it from TX team.

- We are calculating Iub utilization based on designed capacity which can be different from real physical Iub capacity.

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 17

NPO Snapshot-Iub Load calculation-Iub Over IP

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 18

Configured Iub capacity-From configuration snapshot

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 19

Iub load-Iub Over ATM4

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 20

- IubLoadDLRatio_Iub001_B(UIub001_B)(%) is used to get load on Iub over ATM

Iub Load calculation-Iub Over ATM

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 21

IuCS/IuPS load&utilization 5

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 22

- One IP Link carry all Iu interfaces-VLANS.

- -Each Iu interface have two VLANS, one is active and other one is standby.

- Below is the mapping of IuCS/IuPS on VLANs

- Counters VS_rxBytes_VLAN(U20304_VLAN),VS_txBytes_VLAN(U20305_VLAN) are used to get the DL/UL traffic carried on each VLAN

- Iu DL load in Mbits=BH(VS_rxBytes_VLAN(U20304_VLAN UP+CP)*8)/(3600*1000000)

- We have 1 G link carry all Iu interfaces

- IuPS utilization is calculated based on

1G capacity

- IuCS utilization is calculated based on

0.1G capacity

Mapping VLANETHERSTATVLAN_3RF01/3RF01IN0/140/2090/1ETHERSTATVLAN_3RF01/3RF01IN0/142/100/1ETHERSTATVLAN_3RF01/3RF01IN0/142/101/1

IuCS UP ETHERSTATVLAN_3RF01/3RF01IN0/142/30/1IuCS CP ETHERSTATVLAN_3RF01/3RF01IN0/142/60/1IuPS CP ETHERSTATVLAN_3RF01/3RF01IN0/142/910/1IuPS UP ETHERSTATVLAN_3RF01/3RF01IN0/142/911/1

ETHERSTATVLAN_3RF01/3RF01IN0/150/2090/1ETHERSTATVLAN_3RF01/3RF01IN0/152/100/1ETHERSTATVLAN_3RF01/3RF01IN0/152/101/1

IuCS UP ETHERSTATVLAN_3RF01/3RF01IN0/152/30/1IuCS CP ETHERSTATVLAN_3RF01/3RF01IN0/152/60/1IuPS CP ETHERSTATVLAN_3RF01/3RF01IN0/152/910/1IuPS UP ETHERSTATVLAN_3RF01/3RF01IN0/152/911/1

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 23

NPO Snapshot-Iu Load calculation

COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. 24