An identification method for destination switching cell

Abstract

The utility model discloses a determination method of target switching districts, comprising a radio network controller (RNC), which is characterized in that the RNC utilizes the survey report events in the wideband code division multiple assess (WCDMA) system to determine the steady-state priority of the districts, the common priority of the districts is determined; at least two districts with higher common priority are selected, and the district with the highest steady-state priority is selected from the districts as the target switching district. The determination method of target switching districts of the utility model combines the steady-state priority of the districts to determine the target switching districts based on determining common priority, improves the problems of excessively frequent district switching and unstable district switching, real-time adjusts the priority of the districts according to survey reports, stores the historical survey results without using a great deal of resources, and is convenient in calculation.

Description

technical field [0001] The invention relates to cell handover technology of mobile communication, in particular to a method for determining a target handover cell. Background technique [0002] In the process of mobile users conducting business, in order to establish the business in the best cell and realize the continuity of the business, the concept of handover is introduced to ensure that the wireless resources are moved from one cell to another in the user equipment (UE) still maintain continuity. [0003] The handover process is generally divided into three stages: cell measurement, target cell determination and handover initiation, and handover execution. Specifically, the UE measures the signals of neighboring cells during a call, and reports the measurement report to the Radio Network Controller (RNC), and the RNC selects the best cell as the target cell to initiate handover according to the measurement results reported by the UE. The selection of the best cell is ...

AI Technical Summary

Problems solved by technology

However, the cell information used to determine the cell priority in the above method is all real-time, and does not combine the historical conditions of the cell. Although it is more effective when the cell signal is stable, the wireless environment is not static, and the signal in the cell fluctuates. In some cases, the use of the above method to determine the cell priority is likely to cause problems such as too frequent cell switching and unstable switching

[0007] Figure 1 is a schematic diagram of cell handover in the case of cell signal fluctuations. The information change curves of cell 11, cell 12, and cell 13 at T1, T2, and T3 time periods are shown in Figure 1. Cell 11 fluctuates greatly, which may cause UE Switch to cell 11 at T1 time, switch to cell 12 from cell 11 at T2 time, and switch back to cell 11 from cell 12 at T3 time

[0008] Therefore, it is necessary to judge the stability of the cell signal based on the historical conditions of the cell. The more direct method is to make statistical judgments on the measured values ​​of the measurement report in real time, but this requires periodic measurement reports, which will occupy more wireless resources, and the RNC needs space to save The historical measurement results of each cell are frequently calculated and consume system resources

It is also possible to artificially analyze the stability of the cell signal based on the statistical results of the RNC, and then readjust the priority of the cells in the neighbor list. However, the disadvantage of this is that it is difficult to adjust in real time, and it requires regular manpower to check

Images