01-01 Overview of Network Optimization

cBSS Network Optimization Guideline

6 Implementation of Network Acceptance

6

Implementation Implementation of Network Network Acceptance

About This Chapter Chapter After networ k performance indexes meet scheduled requirements, network acceptance can be started. Network Network acceptance is performed on the basis of traffic statistics and actual DTs. According to the quantitative requirements (KPI requirements) for the network quality, network acceptance is performed is performed to check whether the current network netw ork meets the KPI requirements of network optimization, evaluate the quality of the optimized network, and illustrate the effect of the network optimization. DT index acceptance can be started after each index about the corresponding area meets the requirement. Traffic statistics index acceptance can be started after each index meets the requirement and is stable for seven days. To ensure the smooth operation of network acceptance, plan out the criterions and t he methods for the network acceptance before starting the network acceptance. In the case of a wide network, divide it into several regions, and provide rational criterions for traffic statistics index acceptance and DT index acceptance for each region. 6.1 Input and Output of Network Acceptance Before starting network acceptance, make corresponding engineering parameter tables, cell parameter tables, engineering engineering parameter parameter modification records, records, cell parameter modification records network acceptance KPIs, and test methods ready. After accomplishing network acceptance, write out a corresponding network acceptance report and an optimization report. 6.2 Tools for Network Acceptance This describes software and hardware tools required for network acceptance. 6.3 Process of Network Acceptance This describes the process of network acceptance. The network acceptance process involves the preparations for, implementation implementation of, and pass of network acceptance. acceptance. 6.4 Preparations for Network Acceptance Before starting network acceptance, communicate with the engineers and determine the requirements and the operation methods to be followed during network acceptance. For example, determine the area for acceptance test (region division), DT specifications, time to start the acceptance, and methods of measuring traffic statistics indexes and DT indexes. Issue 2.0 (2008-03-10)

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6.5 Network Acceptance Indexes Network acceptance indexes consist of DT acceptance indexes and traffic statistics indexes. 6.6 Report of Network Acceptance After accomplishing network acceptance, write out radio network acceptance report and radio network optimization report.

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6.1 Input and Output of Network Acceptance Before starting network acceptance, make corresponding engineering parameter tables, cell parameter tables, engineering parameter modification records, cell parameter modification records network acceptance KPIs, and test methods ready. After accomplishing network acceptance, write out a corresponding network acceptance report and an optimization report. Before starting network acceptance, make the following data ready: l

Updated engineering parameter table and updated engineering parameter change record

l

Updated cell parameter table and updated cell parameter modification record

l

KPI requirements and test methods for the network acceptance

After accomplishing network acceptance, write out the following documents: l

Radio network acceptance report

l

Radio network optimization report

If the DT indexes and the traffic statistics indexes collected during the network acceptance meet KPI requirements, and the network acceptance report and the network optimization report are written out, the network acceptance ends.

6.2 Tools for Network Acceptance This describes software and hardware tools required for network acceptance. Table 6-1 shows the software tools used in verification. Table 6-1 Software tools used in verification

Tools

Description

CAIT and Pilot Panorama

Used for collecting DT data

ACTIX

Used for analyzing DT data

Nastar

Used for checking parameter configurations and analyzing traffic statistics

Mapinfo

Used for displaying maps and creating route data

Table 6-2 shows the hardware tools used in verification. Table 6-2 Hardware tools used in optimization

Tools

Description

Test terminal and data cables

Used for testing the CDMA services

Entire GPS


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Tools

Description

Laptop computers


Vehicle mounted converter

DC to AC, higher than 300 W

6.3 Process of Network Acceptance This describes the process of network acceptance. The network acceptance process involves the preparations for, implementation of, and pass of network acceptance. Figure 6-1 shows the process of network acceptance. Figure 6-1 Process of network acceptance

Table 6-3 describes the process of network acceptance. Table 6-3 Process of network acceptance

Process

Task

Preparations Before starting network acceptance, communicate with engineers to determine for Network the criterions and the methods for the network acceptance, and perform Acceptance network pre-acceptance tests.

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Process

Task

Implementa tion of Network Acceptance

Perform DT, cable quality tester (CQT) test, collect traffic statistics data to obtain network acceptance indexes.

Pass of Network Acceptance

If the network acceptance indexes meet the requirements, write out the acceptance report and the optimization report based on the acceptance result. If the network acceptance indexes do not meet the requirements, solve the problems and then repeat the acceptance test.

6.4 Preparations for Network Acceptance Before starting network acceptance, communicate with the engineers and determine the requirements and the operation methods to be followed during network acceptance. For example, determine the area for acceptance test (region division), DT specifications, time to start the acceptance, and methods of measuring traffic statistics indexes and DT indexes. Before the formal acceptance test, at least one pre-acceptance test is required to ensure the acceptance test result. If the pre-acceptance test result fails to meet the requirements, perform optimization again to meet the KPI requirements.

6.5 Network Acceptance Indexes Network acceptance indexes consist of DT acceptance indexes and traffic statistics indexes.

Drive Test Acceptance Indexes KPIs required to be collected differ slightly according to the requirements of different projects. Table 6-4 describes the common DT acceptance KPIs required to be collected. Table 6-4 Common drive test acceptance indexes

Item

Definition, Measurement and Calculation Methods

Call completion ratio

Originating call completion ratio = originating call completion times/ originating call requests×100% Terminated call completion ratio = terminated call completion times/ terminated call requests × 100%

Call drop ratio

Call drop ratio = call drop times/total call completion times ×100%

Soft handoff success ratio

l

Analyze the data recorded by the DT tool, and measure the times (A1) of active-set-update requests received by the MS and the times (B1) of active-set-update completion sent by the MS.

l

Soft handoff success ratio = B1/A1

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Item

Definition, Measurement and Calculation Methods

Proceeding delay

It indicates the statistical average duration during which the MS sends an OM message and receives a service connect complete message (SCCM).

Traffic Statistics Acceptance Indexes KPIs required to be collected differ slightly according to the requirements of different projects. Table 6-5 describes the common traffic statistics acceptance KPIs required to be collected. Table 6-5 Common traffic statistics acceptance indexes

Type

Name

Definition

Access ability

Paging success ratio

Paging success ratio = paging success times/paging requests x 100% NOTE Paging success ratio consists of BSC paging success ratio and MSC paging success ratio. The times of BSC paging requests consist the times of retransmission requests of MSC. Thus, the BSC paging success ratio is relatively low, and the MSC paging success ratio acts as the measurement index.

Call Holding Ability

Mobile ability

Call setup success ratio

Call setup success ratio = Call setup success times/call attempts x 100%

Voice service call drop ratio

Voice service call drop ratio = BSC-originated voice service release times/voice service setup success times x 100%

Data service call drop ratio

Data service call drop ratio = BSC-originated PS release times/PS setup success times x 100%

TCH congestion ratio

TCH congestion ratio = TCH congestion times/TCH seizure requests x 100%

Soft handoff success ratio

Soft handoff success ratio = (Intra-BS soft handoff success times + inter-BS soft handoff success times)/(intra-BS soft handoff requests + inter-BS soft handoff requests) x 100%

Hard handoff success ratio

Hard handoff success ratio = (Intra-BS hard handoff success times + inter-BS hard handoff success times)/(intra-BS hard handoff requests + inter-BS hard handoff requests) x 100%

6.6 Report of Network Acceptance After accomplishing network acceptance, write out radio network acceptance report and radio network optimization re port.

XXX Project Radio Network Acceptance Report Table 6-6 lists the primary content of the XXX Project Radio Network Acceptance Report . 6-6


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Table 6-6 Primary content of the XXX Project Radio Network Acceptance Report.

No.

Content

1

Project background

2

Networking

3

Acceptance area definition and KPI test routes

4

Acceptance KPIs (DT indexes and traffic statistics indexes)

5

Methods for the acceptance (DT indexes and traffic statistics indexes)

6

Conclusion of network acceptance

XXX Project Radio Network Optimization Report Table 6-7 lists the primary content of the XXX Project Radio Network Optimization Report . Table 6-7 Primary content of the XXX Project Radio Network Optimization Report.

No.

Content

1

Project background

2

Networking

3

Optimization process, contents, and progress

4

Optimization objective (for DT indexes and traffic statistics indexes)

5

Conclusion of the radio network optimization

6

Single site verification l l

7

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Test methods Analysis and summary of the single site verification: make the existing problem list, solution list, and pending problem list.

RF optimization, including: l

Test methods

l

Analysis of the effect before and after the coverage optimization

l

Analysis of the effect before and after the pilot pollution optimization

l

Analysis of the effect before and after the handoff optimization

l

Analysis and summary of the RF optimization: make the existing problem list, solution list, and pending problem list.


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No.

Content

8

Service optimization, including: l

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Test methods

l

Analysis of the service optimization effect, Circuit Switched (CS) service connection ratio and call drop ratio, Packet Switched (PS) service connection ratio and call drop ratio, throughput, and inter-system handoff success ratio before and after the DT.

l

Analysis of the service optimization effect before and after the traffic statistics test.

l

Analysis of the service optimization summary: make the existing problem list, the solution list, the pending problem list.

9

Pending problem analysis

10

Suggestions on network planning development

11

Appendixes: l

Engineering parameter modification solution table

l

Cell parameter modification solution table

l

Updated engineering parameter record

l

Updated cell parameter record


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01-01 Overview of Network Optimization

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