2G RF & Service Analysis

[henry3499]

2G CS Call drop analysis

In GSM network operation, call drop is a major problem frequently complained by subscribers, and the call drop rate is an important index of the radio network quality. This document analyzes the causes of call drop, and discusses how to locate and solve the problem, so as to reduce the call drop rate and improve network performance. In addition, a solution is brought up to reduce the worst cell caused by a high call drop rate and improve the traffic/call drop ratio.

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[henry3499]

2G CS Call Setup Success Rate

The TCH assignment success rate refers to the rate that the TCHs assigned by the BSC are successfully seized. Successful TCH assignment indicates the procedure from the BSC receiving the Channel Request message sent by the MSC to receiving the Assignment Complete message. TCH Assignment Success Rate is one of accessibility KPIs. It indicates the rate of the MSs successfully seizing the TCHs to make calls. This KPI directly affects the user experience.

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https://www.upload.ee/files/9131393/...V1.0.docx.html

[henry3499]

2G DT Coverage and Analysis

Test preparations include the following four aspects:
• Deciding optimization goal
• Dividing clusters
• Deciding DT route
• Preparing tools and data

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https://www.upload.ee/files/9131401/...V1.0.docx.html

[henry3499]

2G GPRS-EDGE performance Analysis

As the development of the network, mobile subscribers have higher requirement on data service. However, the existing GPRS network cannot provide satisfactory services to users. To be specific, the network has lagged behind in equipment capability, network quality, network resource, and parameter configuration. Hereunder details the problems.

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https://www.upload.ee/files/9131411/...ysis.docx.html

[henry3499]

2G Handover analysis and improvement

Handover is an important function in mobile communication systems. As a means of radio linkcontrol, handover enables users to communicate continuously when they traverse different cells.The HOSR is the ratio of the number of successful handovers to the number of handover requests.The major purpose of handover is to guarantee call continuity, improve speech quality, reducecross interference in the network, and thus provide better services for mobile station (MS)subscribers.

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https://www.upload.ee/files/9131424/...V1.0.docx.html

[henry3499]

2G Neighboring Check

Do not configure too many neighbor cells to reduce the complexity of neighbor ranking algorithm complexity and reduce HO duration. The proper number is 15-25 (considering the mature experience of the radio network optimization).

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[henry3499]

2G Paging analysis

The paging success rate is the ratio of the paging responses received by the system to the initial paging requests sent by the system. It indicates the paging capability of the system.
The paging consists of the voice call paging, short message paging, PSI paging, and Gs paging. For the area that does not enable the Gs interface, the paging consists of only the voice call paging, short message paging, and PSI paging.
The wireless services are performed on the basis of paging. A high paging success rate can improve multiple service KPIs in the case of certain hardware capacity. A high paging success rate helps to improve user satisfaction and to promote the brands of the operators. The paging success rate is one of important KPIs related to the network access. It is also one of important KPIs for the operators.

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https://www.upload.ee/files/9131432/...V1.0.docx.html

[henry3499]

2G PS Call Setup Success Rate

The Success Rate of Uplink TBF Establishments is defined differently for the different concerns of eachtelecom operator.

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[henry3499]

2G SDCCH Traffic follow up

The SDCCH congestion rate is an important index for measuring the network operation quality in the GSM network optimization, and it indicates the access performance of the mobile network. Causes of triggering the SDCCH seizure include MS-related actions such as location update, MS attach/detach, call establishment, and short messages.

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https://www.upload.ee/files/9131450/...V1.0.docx.html

[henry3499]

2G TCH Traffic follow up

The SDCCH congestion rate is an important index for measuring the network operation quality in the GSM network optimization, and it indicates the access performance of the mobile network. Causes of triggering the SDCCH seizure include MS-related actions such as location update, MS attach/detach, call establishment, and short messages.
The TCH congestion rate is the proportion of the number of TCH assignment failures to the number of TCH seizure requests. If the TCH congestion rate is high, the network service quality deteriorates. In this case, you can expand the capacity to reduce the TCH congestion rate.

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