Handoff parameter self-optimization method in mobile communication system

A mobile communication system and handover parameter technology, applied in the field of handover self-optimization, can solve problems such as difficulty in achieving optimality and time-consuming

Inactive Publication Date: 2011-06-15
SOUTHEAST UNIV
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Problems solved by technology

This method is time-consuming a

Method used

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  • Handoff parameter self-optimization method in mobile communication system
  • Handoff parameter self-optimization method in mobile communication system
  • Handoff parameter self-optimization method in mobile communication system

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Embodiment Construction

[0054] An embodiment of the method is given by taking the LTE system as an example:

[0055] In the first step, in the handover performance statistical period T, each eNB detects the handover between adjacent cells too late, too early, handover to the wrong cell, ping-pong handover, and fast handover, and counts their occurrence times and handover results. frequency;

[0056] In the second step, when the counting period ends, each eNB calculates the values ​​of the five handover KPIs according to equations (2)-(6);

[0057] In the third step, each eNB compares the statistical values ​​of the five handover KPIs with the corresponding target values, and judges whether the adjustment conditions of the handover parameters are satisfied. If satisfied, go to the fourth step, otherwise go to the first step;

[0058] In the fourth step, each eNB calculates the handover parameter Hys according to equations (11)-(18) ij with TTT ij The adjustment amount ΔH late，ij , ΔT late，ij , Δ...

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Abstract

The invention provides a handoff parameter self-optimization method in a mobile communication system. The method comprises the following steps of: 1) within a handoff performance statistic period T, detecting a late handoff, an early handoff, a handoff to a mistaken cell, a ping-pang handoff and a fast handoff between neighbor cells, and performing statistic of the occurrence times and the handoff times; 2) calculating values of five handoff key performance indicators (KPI) after finishing the statistic period timing; 3) comparing the statistic values of five handoff KPIs with the corresponding target value and judging whether the statistic values are in accordance with the adjustment condition of the handoff parameter, if so, shifting to step four, otherwise shifting to step one; 4) calculating the adjustment amount delta Hlate, ij, delta Tlate, ij, delta Hearly, wrong, ij, delta Tearly, wrong, ij, delta Hpingpang, fast, ij, delta Tpingpang, fast, ij of the handoff parameter Hysij and TTTij; 5) calculating values of the Hsyij and TTTij of the next statistic period; and 6) shifting to step one, performing the handoff performance statistic of the next period. The method enables thehandoff to adapt to the change of the network environment more flexibly, improves the handoff performance and reduces the manual intervention, thereby reducing the network operational expenses greatly.

Description

technical field [0001] The invention is a handover self-optimization method applied to a mobile communication system, which belongs to the field of network technology in mobile communication. Background technique [0002] Handover success rate is a key indicator of user satisfaction, so the handover process should be as fast and seamless as possible. However, in actual operation, handover failures inevitably exist, and most of the handover failures are related to the setting of handover parameters. In the current second generation (2G) and third generation (3G) mobile communication systems, the configuration and optimization of handover parameters are all done manually. This method is time-consuming and difficult to achieve optimality. In order to reduce the cost of manual optimization and improve optimization efficiency, it is necessary to study switching self-optimization technology. [0003] Handover self-optimization can autonomously and adaptively adjust handover par...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W28/18H04W36/08
Inventor 潘志文金文君尤肖虎刘楠
Owner SOUTHEAST UNIV
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