KPI Optimization

KPI OPTIMIS

TION NOTES

1. Introduction 1 OPTIMIZATIO N 1. What is Optimization? 2. Why do we use it? 3. Requirements for Optimisation 3. Types of Optimization 2 KPI 1. What is KPI? 2. Why do we use it? 3. Types of KPI

2. Paramiters 1 Immediate Assignment Success Rate 2 SDCCH Congestion Rate(Overflow) 3 SDCCH Drop Rate 4 TCH Assignment Success Rate 5 TCH Attempt Failure Rate Due to No TCH Assignment 6 TCH Congestion Rate(Overflow) 7 TCH Seizure Success Rate 8 Call Establishment Success Rate 9 BSS Call Setup Success Rate 10 TCH Call Drop Rate(including Handovers) 11 TCH Call Drop Rate (Excluding Handover) 12 Traffice Volume to Call Drops 13 TCH RF Lost Rate 14 TCH Handover Lost Rate 15 Handover Success Rate 16 Handover RF Success Rate 17 Intra-BSC Handover Success Rate 18 Inter-BSC Incoming Cell Handover Success Rate 19 Inter-BSC Outgoing Cell Handover Success Rate 20 Intra-BSC Handover RF Success Rate 21 Inter-BSC Incoming Cell Radio Handover Success Rate 22 Inter-BSC Outgoing Cell Radio Handover Success Rate 23 Dual-Band Handover Success Rate(900/850-1800/1900) 24 Dual-Band Handover Success Rate(1800/1900-900/850) 25 Call Success Rate 26 TCH Traffic Volume 27 SDCCH Traffic Volume 28 TCHH Traffic Volume 29 TCH Availablity 30 TRX Availability 31 SDCCH Availability 32 Radio Utalization

* Link me KP

3. Problems with Solutions 1 Problem-1 1. Reason 2. Solutions 2 Problem-2 1. Reason 2. Solutions 3 Problem-3 1. Reason 2. Solutions 4 Problem-4 1. Reason 2. Solutions 5 Problem-5 1. Reason 2. Solutions

4. Some Basic Definations 1 TA 2 ARFCN 900 Band 1800 Band 3 4 5

Created by Amit Gupt aamitgupta@toshniwal www.toshniwalcontrols

are provided for every ssages. To view the detailed of click the messages.

Note: This is just a tutorial material for KPI Optimization and call flow. These contents which we encounter in normal RF scenarios.

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Introduction Optimization

What is Optimization?

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‘The identification and rectification of performance affecting problems within the constraints of an existing network infrastructure.’

Why do we use it?


The goal of optimisation is to ensure the network is operating at optimum efficiency and within the defined q uality of service constraints. This is achieved by implementing corrective action and procedures to rectify network problems identified though analysis of p erformance management monitoring parameters. • Goal: • Ensure optimum network performance within QoS constraints • Process: • Identify network problems through ana lysis of KPIs • Implement corrective actions and/or procedures to rectify problems • Monitor results of modifications • Purpose: • Maintain/improve QoS • Reduce churn rate • Attract new customers • Maximise revenue-generating service • Maximize efficiency of network functional elements The reason this optimisation process is carried out is to: • Maintain or improve quality of service • Reduce churn rate by retaining existing customers • Attract new customers • Maximise revenue generating services by maximising efficiency of functional network elements.

Requirements for Optimisation


Network issues that may generate a requirement for optimisation include: • Perceived reduction in network quality

• Indications from network performance monitoring • Subscriber’s experience of using the network • Maximising the use of existing infrastructure • operator wants to ensure best return on investment • Introduction of new services • maximise existing resources to accommodate new services such as GPRS • Change in original design parameters • Flawed original design information • Original design information has changed • Regardless of the initiating event, the optimisation procedures remain generally the same

Types of Optimization


1 Physical Optimization Optimization 2 Soft Optimization

KPI (Key Performance Indicator)

What is KPI?


• KPIs are established by the operator as a benchmark against which to judge the performance of a ne • Which KPIs the operator decides to use will depend on: • the nature of the network • operator assessment of priorities for their business • Counters implemented by vendors • KPIs are generally based on two sets of data: • Network statistics from the OMC • Drive test statistics using test mobile equipment

Why do we use it?


For Optimization, Utalizatiion of Site and Utalization of resources.

Types of KPI


KPIs that are commonly used in routine monitoring can be classified according to the indicated

performance. A. The CS(Call Switching) KPIs can be categorized into the following: 1 Accessibili Accessibility ty KPIs 1 Immediate Assignment Assignment Success Rate 2 SDCCH Congestion Rate(Overflow) Rate(Overflow) 3 SDCCH SDCCH Drop Drop Rate 4 TCH Assignment Assignment Success Rate 5 TCH Attempt Failure Failure Rate Due to No TCH Assignment 6 TCH Congestion Rate(Overflow) Rate(Overflow) 7 TCH Seizure Seizure Success Rate Rate 8 Call Establishment Establishment Success Rate 9 BSS Call Setup Success Rate 2 Retainabi Retainability lity KPIs 1 TCH Call Drop Rate(including Rate(including Handovers) 2 TCH Call Drop Drop Rate (Excluding Handover) 3 Traffice Volume to Call Drops Drops 4 TCH RF RF Lost Rate Rate 5 TCH Handover Handover Lost Rate Rate 6 Handover Handover Success Rate Rate 7 Handover Handover RF Success Rate Rate 8 Intra-BSC Handover Success Rate Rate 9 Inter-BSC Incoming Incoming Cell Handover Success Rate Rate 10 Inter-BSC Outgoing Cell Handover Handover Success Rate 11 Intra-BSC Handover RF Success Rate 12 Inter-BSC Incoming Incoming Cell Radio Handover Success Rate 13 Inter-BSC Outgoing Cell Cell Radio Handover Success Rate Rate 14 Dual-Band Handover Success Rate(900/850-1800/1900) 15 Dual-Band Handover Success Rate(1800/1900-900/850) 16 Call Success Success Rate Rate 3 Resource Utilization Utilization KPIs 1 TCH Traffic Traffic Volume Volume 2 SDCCH Traffic Volume 3 TCHH Traffic Volume Volume 4 TCH Availabli Availablity ty 5 TRX Availabili Availability ty 6 SDCCH Availability B. The PS(Packet Switching) KPIs can be c ategorized into the following: 1 Throughput Throughput KPIs 1 Uplink Uplink RLC Payload Payload 2 Downlink Downlink RLC Payload Payload 3 Uplink EGPRS EGPRS RLC Payload Payload 4 Downlink EGPRS EGPRS RLC Payload 5 Mean payload (kbytes) of the uplink data at the LLC layer 6 Mean payload (kbytes) of the downlink data at the the LLC layer 7 Mean Downlink NS_PDUs NS_PDUs throughput throughput 8 Packet data rate on air interface 2 Transmissi Transmission on KPIs 1 Uplink RLC Data Retransmission Retransmission Rate 2 Downlink RLC Data Data Retransmission Rate

3 Uplink EGPRS RLC Data Retransmission Rate 4 Downlink EGPRS RLC Data Retransmission Rate 3 Accessibility KPIs 1 Uplink Assignment Success Rate 2 Downlink Assignment Success Rate 3 Uplink EGPRS Assignment Success Rate 4 Downlink EGPRS Assignment Success Rate 5 Mean inter-arrival time of packet access requests on CCCH 6 Uplink GPRS TBF Congestion Rate 7 Downlink GPRS TBF Congestion Rate 8 Uplink EGPRS TBF Congestion Rate 9 Downlink EGPRS TBF Congestion Rate 4 Resource utilization KPIs 1 Uplink PDTCH/PACCH utilization rate 2 Downlink PDTCH/PACCH utilization rate 3 PDCH occupation rate 4 Pre-empted Dynamic PDCH Carrying Packet Traffic Reclaimed Suc 5 PDCH Allocation Success Rate 6 Downlink RLC Data Throughput Per PDCH 7 Uplink RLC Data Throughput Per PDCH 5 Retainability KPIs 1 Uplink GPRS TBF Drop Rate 2 Downlink GPRS TBF DropRate 3 Uplink EGPRS TBF Drop Rate 4 Downlink EGPRS TBF Drop Rate 6 End-to-End Delay KPIs 1 PING Delay 2 Mean Delay of PDP Activation 3 Mean Delay of Attachment 4 Cell Reselection Time for G Packet Services 5 Cell Reselection Time for G->G Packet Services 7 End-to-End Quality KPIs 1 GRPS Data Transmission Rate 2 EDGE Data Transmission Rate



twork

This describes the CS accessibility KPIs that mainly indicate the call success rate when a MS accesses the network. Low accessibility KPIs directly lead to low user satisfaction.

This describes the CS Retainability KPIs that indicate the ratio of moving MSs to all MSs, the moving frequency, and the success rate of handovers on the move. In addition, these KPIs indicate the capability of providing continuous services. A low handover success rate may lead to a high call drop rate. A low success rate leads to low user satisfaction.

This describes the CS Resource Utilization KPIs that are used to monitor the load of hot cells and the network. These KPIs can serve as references for capacity expansion. The traffic volume KPIs help to obtain the ratio of busy-hour traffic to idle-hour traffic, to evaluate the utilization of system resources, and to adjust charges. The equipment availability KPIs help to know the running status of equipment, such as the running status of channels. If these KPIs are low, equipment and transmission may be faulty.

This describes the PS Throughput KPIs that are used to monitor the load of hot cells and the network and to obtain service models. These KPIs can serve as references for capacity expansion. The PS Throughput KPIs help to obtain the busy-hour PS traffic and the idle-hour PS traffic, to evaluate the utilization of system resources, and to facilitate service assessment of carriers.

This describes the PS Transmission KPIs that indicate the quality of radio transmission links in a cell. If the RLC data block retransmission rate in a cell is high, the quality of the radio

transmission links in the cell is poor. Therefore, take corresponding measures, such as RF optimization.

This describes the PS Accessibility KPIs that indicate whether MSs can easily access cells. Poor PS Accessibility KPIs directly affect user satisfaction.

This describes the PS Resource Utilization KPIs that indicate the utilization of the network resource and the busy states of services. Thus, these KPIs can be used to guide network expansion. cessRate

This describes the PS Retainability KPIs that mainly involve the u plink and downlink TBF call drop rates. These KPIs indicate the capability of providing continuous services by the network and are directly related to user satisfaction. Thus, an increase in call drop rate directly leads to a decrease in user satisfaction.

This describes the PS End-to-End Delay KPIs that indicate the service response speed of the network. Long delay affects user satisfaction.

This describes the PS end-to-end quality KPIs. They involve the performance factors associated with the terminals, the radio access network, and the core network. Now, the main pe rformance problem is concerned with the radio access network. Therefore, these KPIs indicate the end-toend service data link bearing capability of the GPRS network, which are directly related to user satisfaction.

Paramiters A. The CS(Call Switching) KPIs can be categorized into the following: Accessibility KPIs

1 Immediate Assignment Success Rate


Immediate Assignment Success Rate = Call Setup Indications (Circuit Service) / Channel Requests (Circuit Service) x 100%

2 SDCCH Congestion Rate(Overflow)


SDCCH Congestion Rate(Overflow) = Failed SDCCH Seizures due to Busy SDCCH / SDCCH Seizure Requests x 100%

3 SDCCH Drop Rate


SDCCH Drop Rate = Call Drops on SDCCH / Successful SDCCH Seizures x 100%

4 TCH Assignment Success Rate


TCH Assignment Success Rate = Successful Assignments / Assignment Requests x 100%

5

TCH Attempt Failure Rate Due to No TCH Assignment


TCH Attempt Failure Rate Due to No TCH Assignment = (TCH Seizure Requests (Signaling Channel) + TCH Seizure Requests (Traffic Channel) + TCH Seizure Requests in TCH Handovers (Traffic Channel) - Σ(All TRXs of Cells)Successful Channel Assignments (TCH)) / (TCH Seizure Requests (Signaling Channel) + TCH Seizure Requests (Traffic Channel) + TCH Seizure Requests in TCH Handovers (Traffic Channel)) x 100%

6 TCH Congestion Rate(Overflow)


TCH Congestion Rate(Overflow) = (Failed TCH Seizures due to Busy TCH (Signaling Channel) + Failed TCH Seizures due to Busy TCH (Traffic Channel) + Failed TCH Seizures in TCH Handovers due to Busy TCH (Traffic Channel)) / (TCH Seizure Requests (Signaling Channel) + TCH Seizure Requests (Traffic Channel) + TCH Seizure Requests in TCH Handovers (Traffic Channel)) x 100%

7 TCH Seizure Success Rate


TCH Seizure Success Rate = (Successful TCH Seizures (Signaling Channel) + Successful TCH Seizures (Traffic Channel) + Successful TCH Seizures in TCH handovers (Traffic Channel)) / (TCH Seizure Requests (Signaling Channel) + TCH Seizure Requests (Traffic Channel) + TCH Seizure Requests in TCH Handovers (Traffic Channel)) x 100%

8 Call Establishment Success Rate


Call Establishment Success Rate = Successful Assignments/(SDCCH Seizures for Speech Service + Call Setup Indications (MOC Non SMS) (TCHF) + Call Setup Indications (MTC) (TCHF) + Call Setup Indications (Emergency Call) (TCHF) + Call Setup Indications (Call Re-establishment) (TCHF) + Call Setup Indications (MOC Non SMS) (TCHH) + Call Setup Indications (MTC) (TCHH) + Call Setup Indications (Call Re-establishment) (TCHH)) x 100%

9 BSS Call Setup Success Rate


BSS Call Setup Success Rate= ((Immediate Assignment Success Rate x TCH Assignment Success Rate) x (1 - SDCCH Drop Rate)) x 100%

Retainability KPIs

1 TCH Call Drop Rate(including Handovers)


TCH Call Drop Rate(including Handovers) = Call Drops on TCH / (Successful TCH Seizures (Signaling Channel) + Successful TCH Seizures (Traffic Channel) + Successful TCH Seizures in TCH handovers (Traffic Channel)) x 100%

2 TCH Call Drop Rate (Excluding Handover)


TCH Call Drop Rate (Excluding Handover) = Call Drops on TCH / (Successful TCH Seizures (Traffic Channel) + Successful Incoming Internal Inter-Cell Handovers + Successful External Incoming Cell Handovers - Successful Outgoing Internal Inter-Cell Handovers Successful Outgoing External Inter-Cell Handovers) x 100%

3 Traffice Volume to Call Drops


Traffice Volume to Call Drops = 60 x Traffic Volume of TCHs / Call Drops on TCH

4 TCH RF Lost Rate


TCH RF Lost Rate = (Call Drops on Radio Interface in Stable State (Traffic Channel) + Call Drops on Radio Interface in Stable State (TCH Qua Signaling Channel)) / (Successful TCH Seizures (Signaling Channel) + Successful TCH Seizures (Traffic Channel) + Successful TCH Seizures in TCH Handovers (Traffic Channel)) x 100%

5 TCH Handover Lost Rate


TCH Handover Lost Rate = (Handover Drop Rate of TCH + Call Drops in TCH Handovers (Traffic Channel)) / (Successful TCH Seizures (Signaling Channel) + Successful TCH Seizures (Traffic Channel) + Successful TCH Seizures in TCH Handovers (Traffic Channel)) x 100%

6 Handover Success Rate


Handover Success Rate = (Successful Outgoing Internal Inter-Cell Handovers + Successful External Outgoing Cell Handovers) / (Outgoing Internal Inter-Cell Handover Requests + Outgoing External Inter-Cell Handover Requests ) x 100%

7 Handover RF Success Rate


Handover RF Success Rate = (Successful Outgoing Internal Inter-Cell Handover + Successful Outgoing External Inter-Cell Handovers) / (Outgoing Internal Inter-Cell Handover Commands + Outgoing External Inter-Cell Handover Commands) x 100%

8 Intra-BSC Handover Success Rate


Intra-BSC Handover Success Rate = (Successful Internal Intra-Cell Handovers + Successful Incoming Internal Inter-Cell Handovers) / (Internal Intra-Cell Handover Requests + Incoming Internal Inter-Cell Handover Requests ） x 100%

9 Inter-BSC Incoming Cell Handover Succes


Inter-BSC Incoming Cell Handover Success Rate = Successful Incoming External Inter-Cell Handovers / Incoming External

Inter-Cell Handover Requests x 100%

10 Inter-BSC Outgoing Cell Handover Succes


Inter-BSC Outgoing Cell Handover Success Rate = Successful Outgoing External Inter-Cell Handovers / Outgoing External Inter-Cell Handover Requests x 100%

11 Intra-BSC Handover RF Success Rate


Intra-BSC Handover RF Success Rate = (Successful Internal Intra-Cell Handovers + Successful Incoming Internal Inter-Cell Handovers) / (Internal Intra-Cell Handover Commands + Incoming Internal InterCell Handover Responses) x 100%

12 Inter-BSC Incoming Cell Radio Handover


Inter-BSC Incoming Cell Radio Handover Success Rate = Successful Incoming External Inter-Cell Handovers / Incoming External Inter-Cell Handover Responses x 100%

13 Inter-BSC Outgoing Cell Radio Handover


Inter-BSC Outgoing Cell Radio Handover Success Rate = Successful Outgoing External Inter-Cell Handovers / Outgoing External Inter-Cell Handover Commands x 100%

14 Dual-Band Handover Success Rate(900/85


15 Dual-Band Handover Success Rate(1800/1


16 Call Success Rate


Call Success Rate = SDCCH Congestion Rate(Overflow) x (1SDCCH Drop Rate) x (1 - TCH Attempt Failure Rate Due to No TCH Assignment) x (1-TCH Call Drop Rate （ including Handovers） ) x 100%

Resource Utilization KPIs

1 TCH Traffic Volume


Call Success Rate = SDCCH Congestion Rate(Overflow) x (1SDCCH Drop Rate) x (1 - TCH Attempt Failure Rate Due to No TCH Assignment) x (1-TCH Call Drop Rate （ including Handovers） ) x 100%

2 SDCCH Traffic Volume


SDCCH Traffic Volume = (Mean Number of Busy Signaling Channels (SDCCH) (900/850 Cell) + Mean Number of Busy Signaling Channels (SDCCH) (1800/1900 Cell)) / Number of Samples to Scan SDCCH States

3 TCHH Traffic Volume


TCHH Traffic Volume = Mean Number of Busy TCHs (TCHH) (900/850 Cell) + Mean Number of Busy TCHs (TCHH) (1800/1900 Cell)

4 TCH Availablity


TCH Availablity = Mean Number of Available Channels (TCH) / Mean Number of Dynamically Configured Channels (TCH) x 100%

5 TRX Availability


TRX Availability = Available TRXs / Activated TRXs x 100%

6 SDCCH Availability


SDCCH Availability = Mean Number of Available Channels (SDCCH) / Mean Number of Dynamically Configured Channels (SDCCH) x 100%

7 Radio Utalization


Radio Utalization = TCH Traffic Available / Radio Capacity * 100%

7 TRX Usability

TRX Usability = Available TRX / Activated TRX * 100%



Problems w Question:- How to find the site is down or not? Click to return to main page Ans:When TRX Usability = 0%, that mean the Available TRXs = 0 Hardware faulty Power Issue Question:- TRX related problems. Click to return to main page Ans:When TRX Usability < 100%, that mean the Available TRXs < Activated TRXs Hardware faulty Power Issue Question:- TCH related problems. Click to return to main page Ans:When TCH Availability < 100%, that mean the Available TCHs < Configured TC Hardware faulty Question:- SDCCH related problems. Click to return to main page Ans:When SDCCH Availability < 100%, that mean the Available SDCCHs < Configu Hardware faulty Mismatch Configuration For 1 TRX = 1 Time slot = 7 SDCCH For 2 TRX = 1 Time slot = 7 SDCCH For 3 TRX = 2 Time slot = 14 SDCCH For 4 TRX = 2 Time slot = 14 SDCCH For 5 TRX = 3 Time slot = 21 SDCCH For 6 TRX = 3 Time slot = 21 SDCCH Question:- TCH Traffic related problems. Click to return to main page Ans:Check the TCH traffic should be less then 80% of Radio Capacity Radio capacity TRXs configuration SDCCH configuration If don’t match so take optimum configuration Question:- CSSR down / CDR up problems. Click to return to main page Ans:Reasons Swapping Remove the swaping Hardware faulty Call to OMCR and Inst TRXs Usability TCH half rate / full rate configuration Half rate / Full rate con HO failure / HOSR Interference change Down tilt, Orie RxQual RxLev bad Handove Margin Radio Utalization TCH drop rate TCH blocking rate SDCCH drop rate SDCCH blocking rate Overshooting of sites Overlapping

Path Imbalance RACH success rate Immediate Authontication Success rate Question:- HOSR down / HFR up problems. Click to return to main page Ans:Incoming Internal Inter-Cell Handover Requests Successful Incoming Internal Inter-Cell Handovers Incoming External Inter-Cell Handover Requests Successful Incoming External Inter-Cell Handovers Outgoing Internal Inter-Cell Handover Requests Successful Outgoing Internal Inter-Cell Handover Outgoing External Inter-Cell Handover Requests Successful External Inter-Cell Handover RxLev RxQual Interference Bad HO Margin RxLev difference HO RxQual difference HO TA emergency HO PGBT HO OM forced HO BQ emergency HO RSD emergency HO Interference emergency HO Load Sharing HO Edge HO Fast Moving MS HO Overlaid / Underlaid HO Neighbors are not define Fake Neighbor Power Budget TA Question:- TCH Drop Call Rate problems. Click to return to main page Ans:Reasons Swapping Hardware faulty TRXs Usability TCH half rate / full rate configuration HO failure reasons / HOSR Interference RxQual RxLev bad Handove Margin Radio Utalization TCH drop rate TCH blocking rate Overshooting of sites Overlapping Path Imbalance RACH success rate

Immediate Authontication Success rate Question:- Radio Capacity problems. Click to return to main page Ans:If Radio Capacity < TCH Traffic then try to increase Radio Capacity by TRXs Configuration

Question:- How to Check the Swapping? Click to return to main page Ans:Lock the every sector one by one and drive all the routes covered by the complete site. Due t Question:- If call cant be orignating in a Site/Sector. Click to return to main page Ans:1 If CGI defination are mismatch in BSC and MSC so call cant be orignated. For s 2 MS is at the location of Inter MSC Handover so define the neighbors of MSC1-B Question:- If RxLev is very fluctuating. Like- ( -45, -93, -48, -90, -55, -89, -52, -94, -47, -90, -45, -88) Ans:Check the following parameters Swapping VSWR alarm Conectors may be loss Jumper may be loss Banding of Antenna cable Multipath signal

S-1 BTS

Building S-2

S-1 MS

Question:- Is Handover CGI dependent of BCCH dependent? Click to return to main page Ans:The Handover is BCCH dependent but only in case of Inter MSC handover the handover is C

ith Solutions


Hs

red SDCCHs

allation team and Operator. So repair or change the hardware figured through OMCR tation of the far site. Or change the frequency

this we can find the complete coverage area of every BCCH of the site. And solve it by using Tilt( E, olving this match them in both the BSC and MSC. SC1-CGI1 to MSC1-BSC1-CGI1 and vice versa at MSC level. Click to return to main page

I dependent.

), Orientation, and cable tracing.

Some Basic Defi TA (Timing Advance)

Timing Advance is needed to compensate for different ti transmission of radio signals from different mobiles. The Timing Advance sets a limit on the size of the cell. The T found initially from the position of the received RACH bur period and is adjusted during the call in response to subs positions.

Timing Advance is calculated from delay of data bits in the access b received by the base station - long guard period allows space for thi

TA signal is transmitted on SACCH as a number between 0 and 63 i units of bit periods • TA value allows for ‘round trip’ from MS to BTS and back to MS • Each step in TA value corresponds to a MS to BTS distance of 550 metres • Maximum MS to BTS distance allowed by TA is 35 km

ARFCN (Absolute radio frequence ch

900 Band

4.2 UPLINK ARFCN 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

890 FREQUENCE 890.2 890.4 890.6 890.8 891 891.2 891.4 891.6 891.8 892 892.2 892.4 892.6 892.8 893 893.2 893.4 893.6 893.8 894 894.2 894.4 894.6 894.8 895 895.2 895.4 895.6 895.8 896 896.2 896.4 896.6 896.8 897 897.2 897.4 897.6 897.8 898 898.2 898.4 898.6 898.8 899

915

45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94

899.2 899.4 899.6 899.8 900 900.2 900.4 900.6 900.8 901 901.2 901.4 901.6 901.8 902 902.2 902.4 902.6 902.8 903 903.2 903.4 903.6 903.8 904 904.2 904.4 904.6 904.8 905 905.2 905.4 905.6 905.8 906 906.2 906.4 906.6 906.8 907 907.2 907.4 907.6 907.8 908 908.2 908.4 908.6 908.8 909

95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124

1800 Band

909.2 909.4 909.6 909.8 910 910.2 910.4 910.6 910.8 911 911.2 911.4 911.6 911.8 912 912.2 912.4 912.6 912.8 913 913.2 913.4 913.6 913.8 914 914.2 914.4 914.6 914.8 915

4.2 UPLINK ARFCN 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526

1710 FREQUENCE 1710.4 1710.6 1710.8 1711 1711.2 1711.4 1711.6 1711.8 1712 1712.2 1712.4 1712.6 1712.8 1713 1713.2

1785

527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576

1713.4 1713.6 1713.8 1714 1714.2 1714.4 1714.6 1714.8 1715 1715.2 1715.4 1715.6 1715.8 1716 1716.2 1716.4 1716.6 1716.8 1717 1717.2 1717.4 1717.6 1717.8 1718 1718.2 1718.4 1718.6 1718.8 1719 1719.2 1719.4 1719.6 1719.8 1720 1720.2 1720.4 1720.6 1720.8 1721 1721.2 1721.4 1721.6 1721.8 1722 1722.2 1722.4 1722.6 1722.8 1723 1723.2

577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626

1723.4 1723.6 1723.8 1724 1724.2 1724.4 1724.6 1724.8 1725 1725.2 1725.4 1725.6 1725.8 1726 1726.2 1726.4 1726.6 1726.8 1727 1727.2 1727.4 1727.6 1727.8 1728 1728.2 1728.4 1728.6 1728.8 1729 1729.2 1729.4 1729.6 1729.8 1730 1730.2 1730.4 1730.6 1730.8 1731 1731.2 1731.4 1731.6 1731.8 1732 1732.2 1732.4 1732.6 1732.8 1733 1733.2

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676

1733.4 1733.6 1733.8 1734 1734.2 1734.4 1734.6 1734.8 1735 1735.2 1735.4 1735.6 1735.8 1736 1736.2 1736.4 1736.6 1736.8 1737 1737.2 1737.4 1737.6 1737.8 1738 1738.2 1738.4 1738.6 1738.8 1739 1739.2 1739.4 1739.6 1739.8 1740 1740.2 1740.4 1740.6 1740.8 1741 1741.2 1741.4 1741.6 1741.8 1742 1742.2 1742.4 1742.6 1742.8 1743 1743.2

677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726

1743.4 1743.6 1743.8 1744 1744.2 1744.4 1744.6 1744.8 1745 1745.2 1745.4 1745.6 1745.8 1746 1746.2 1746.4 1746.6 1746.8 1747 1747.2 1747.4 1747.6 1747.8 1748 1748.2 1748.4 1748.6 1748.8 1749 1749.2 1749.4 1749.6 1749.8 1750 1750.2 1750.4 1750.6 1750.8 1751 1751.2 1751.4 1751.6 1751.8 1752 1752.2 1752.4 1752.6 1752.8 1753 1753.2

727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776

1753.4 1753.6 1753.8 1754 1754.2 1754.4 1754.6 1754.8 1755 1755.2 1755.4 1755.6 1755.8 1756 1756.2 1756.4 1756.6 1756.8 1757 1757.2 1757.4 1757.6 1757.8 1758 1758.2 1758.4 1758.6 1758.8 1759 1759.2 1759.4 1759.6 1759.8 1760 1760.2 1760.4 1760.6 1760.8 1761 1761.2 1761.4 1761.6 1761.8 1762 1762.2 1762.4 1762.6 1762.8 1763 1763.2

777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826

1763.4 1763.6 1763.8 1764 1764.2 1764.4 1764.6 1764.8 1765 1765.2 1765.4 1765.6 1765.8 1766 1766.2 1766.4 1766.6 1766.8 1767 1767.2 1767.4 1767.6 1767.8 1768 1768.2 1768.4 1768.6 1768.8 1769 1769.2 1769.4 1769.6 1769.8 1770 1770.2 1770.4 1770.6 1770.8 1771 1771.2 1771.4 1771.6 1771.8 1772 1772.2 1772.4 1772.6 1772.8 1773 1773.2

827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876

1773.4 1773.6 1773.8 1774 1774.2 1774.4 1774.6 1774.8 1775 1775.2 1775.4 1775.6 1775.8 1776 1776.2 1776.4 1776.6 1776.8 1777 1777.2 1777.4 1777.6 1777.8 1778 1778.2 1778.4 1778.6 1778.8 1779 1779.2 1779.4 1779.6 1779.8 1780 1780.2 1780.4 1780.6 1780.8 1781 1781.2 1781.4 1781.6 1781.8 1782 1782.2 1782.4 1782.6 1782.8 1783 1783.2

877 878 879 880 881 882 883 884 885

1783.4 1783.6 1783.8 1784 1784.2 1784.4 1784.6 1784.8 1785

nations

e delays in the maximum value of value to use is st in the guard equent normal burst

rst delay


n

nnel number )

890.2 894.6

935 DOWNLINK ARFCN 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44

960 FRENQUENCE 935.2 935.4 935.6 935.8 936 936.2 936.4 936.6 936.8 937 937.2 937.4 937.6 937.8 938 938.2 938.4 938.6 938.8 939 939.2 939.4 939.6 939.8 940 940.2 940.4 940.6 940.8 941 941.2 941.4 941.6 941.8 942 942.2 942.4 942.6 942.8 943 943.2 943.4 943.6 943.8 944

45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94

944.2 944.4 944.6 944.8 945 945.2 945.4 945.6 945.8 946 946.2 946.4 946.6 946.8 947 947.2 947.4 947.6 947.8 948 948.2 948.4 948.6 948.8 949 949.2 949.4 949.6 949.8 950 950.2 950.4 950.6 950.8 951 951.2 951.4 951.6 951.8 952 952.2 952.4 952.6 952.8 953 953.2 953.4 953.6 953.8 954

95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124

1805 1880 DOWNLINK ARFCN FREQUENCE 512 1805.4 513 1805.6 514 1805.8 515 1806 516 1806.2 517 1806.4 518 1806.6 519 1806.8 520 1807 521 1807.2 522 1807.4 523 1807.6 524 1807.8 525 1808 526 1808.2

954.2 954.4 954.6 954.8 955 955.2 955.4 955.6 955.8 956 956.2 956.4 956.6 956.8 957 957.2 957.4 957.6 957.8 958 958.2 958.4 958.6 958.8 959 959.2 959.4 959.6 959.8 960

527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576

1808.4 1808.6 1808.8 1809 1809.2 1809.4 1809.6 1809.8 1810 1810.2 1810.4 1810.6 1810.8 1811 1811.2 1811.4 1811.6 1811.8 1812 1812.2 1812.4 1812.6 1812.8 1813 1813.2 1813.4 1813.6 1813.8 1814 1814.2 1814.4 1814.6 1814.8 1815 1815.2 1815.4 1815.6 1815.8 1816 1816.2 1816.4 1816.6 1816.8 1817 1817.2 1817.4 1817.6 1817.8 1818 1818.2

577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626

1818.4 1818.6 1818.8 1819 1819.2 1819.4 1819.6 1819.8 1820 1820.2 1820.4 1820.6 1820.8 1821 1821.2 1821.4 1821.6 1821.8 1822 1822.2 1822.4 1822.6 1822.8 1823 1823.2 1823.4 1823.6 1823.8 1824 1824.2 1824.4 1824.6 1824.8 1825 1825.2 1825.4 1825.6 1825.8 1826 1826.2 1826.4 1826.6 1826.8 1827 1827.2 1827.4 1827.6 1827.8 1828 1828.2

627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676

1828.4 1828.6 1828.8 1829 1829.2 1829.4 1829.6 1829.8 1830 1830.2 1830.4 1830.6 1830.8 1831 1831.2 1831.4 1831.6 1831.8 1832 1832.2 1832.4 1832.6 1832.8 1833 1833.2 1833.4 1833.6 1833.8 1834 1834.2 1834.4 1834.6 1834.8 1835 1835.2 1835.4 1835.6 1835.8 1836 1836.2 1836.4 1836.6 1836.8 1837 1837.2 1837.4 1837.6 1837.8 1838 1838.2

677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726

1838.4 1838.6 1838.8 1839 1839.2 1839.4 1839.6 1839.8 1840 1840.2 1840.4 1840.6 1840.8 1841 1841.2 1841.4 1841.6 1841.8 1842 1842.2 1842.4 1842.6 1842.8 1843 1843.2 1843.4 1843.6 1843.8 1844 1844.2 1844.4 1844.6 1844.8 1845 1845.2 1845.4 1845.6 1845.8 1846 1846.2 1846.4 1846.6 1846.8 1847 1847.2 1847.4 1847.6 1847.8 1848 1848.2

727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776

1848.4 1848.6 1848.8 1849 1849.2 1849.4 1849.6 1849.8 1850 1850.2 1850.4 1850.6 1850.8 1851 1851.2 1851.4 1851.6 1851.8 1852 1852.2 1852.4 1852.6 1852.8 1853 1853.2 1853.4 1853.6 1853.8 1854 1854.2 1854.4 1854.6 1854.8 1855 1855.2 1855.4 1855.6 1855.8 1856 1856.2 1856.4 1856.6 1856.8 1857 1857.2 1857.4 1857.6 1857.8 1858 1858.2

777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826

1858.4 1858.6 1858.8 1859 1859.2 1859.4 1859.6 1859.8 1860 1860.2 1860.4 1860.6 1860.8 1861 1861.2 1861.4 1861.6 1861.8 1862 1862.2 1862.4 1862.6 1862.8 1863 1863.2 1863.4 1863.6 1863.8 1864 1864.2 1864.4 1864.6 1864.8 1865 1865.2 1865.4 1865.6 1865.8 1866 1866.2 1866.4 1866.6 1866.8 1867 1867.2 1867.4 1867.6 1867.8 1868 1868.2

827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876

1868.4 1868.6 1868.8 1869 1869.2 1869.4 1869.6 1869.8 1870 1870.2 1870.4 1870.6 1870.8 1871 1871.2 1871.4 1871.6 1871.8 1872 1872.2 1872.4 1872.6 1872.8 1873 1873.2 1873.4 1873.6 1873.8 1874 1874.2 1874.4 1874.6 1874.8 1875 1875.2 1875.4 1875.6 1875.8 1876 1876.2 1876.4 1876.6 1876.8 1877 1877.2 1877.4 1877.6 1877.8 1878 1878.2

877 878 879 880 881 882 883 884 885

1878.4 1878.6 1878.8 1879 1879.2 1879.4 1879.6 1879.8 1880

Call Processing Summary Note: In this presentation the BTS & BSC is considered together as BSS part. MOBILE ORIGINATED CALL MS

MSC/

BSS

VLR

Channel Request Immediate Assignment CM Sevice Request Complete Layer 3 Info Authentication Request Authentication Response Cipher Mode CMD Ciphering Mode Command Cipher Mode Complete Cipher Mode Complete Setup Identity Request Identity Response Call Proceeding Assignment Request Assignment Command Assignment Complete Assignment Complete Initial Addre Address Comp Alerting Answer Signal/A Connect Connect Acknowledge

MOBILE TERMINATED CALL

MS

MSC/

BSS

VLR

Provide Roaming Number Roaming Number

Initial Addre Paging Command Paging Channel Request Immediate Assignment Paging Response Complete Layer 3 Info Cipher Mode CMD Ciphering Mode Command Ciphering Mode Complete Cipher Mode Complete Identity Request Identity Response Setup Call Confirmed Assignment Request Assignment Command Assignment Complete Assignment Complete Alerting Address Comp Connect Connect Acknowledge

Answer Signal/A


HLR

ss Message (IAM) lete Message (ACM)

nswer Message (ANM)

PSTN

HLR

PSTN

Send Routing Info

Routing Information ss Message (IAM)

lete Message (ACM)

nswer Message (ANM)

Click to return to

KPI Optimization

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