Method for selecting common-frequency cell and mobile terminal

Abstract

The invention discloses a method for selecting a common-frequency cell and a mobile terminal. The method comprises the following steps: determining a processing signal in a first signal except for effective information of a first cell by the terminal, wherein the first signal is transmitted to the terminal by a base station, and the first cell is a cell with highest power in a reference common-frequency cell group of the terminal; acquiring initial channel impulse response of each cell in other cells according to the processing signal and basic training sequences of other cells in the reference common-frequency cell group except for the first cell, and acquiring effective diameter power according to the initial channel impulse response of each cell in other cells; and using the cell with effective diameter power more than a predetermined threshold in other cells and the first cell as a common-frequency cell of the terminal. The method and the mobile terminal can take the cell with high correlation as the common-frequency cell, can effectively improve the performance of common-frequency interference elimination in a simple mode, and solve the problem of abnormality of common-frequency interference elimination.

Description

technical field [0001] The invention relates to the field of data network communication, in particular to a method for selecting an intra-frequency cell and a mobile terminal. Background technique [0002] Such as figure 1 Shown is a schematic diagram of the frame structure of the TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, referred to as TD-SCDMA) system. In the TD-SCDMA system, the capacity of the system is further expanded by using the same-frequency networking technology. Although it will increase the capacity of the system, it will also bring about the problem of mutual interference between cells of the same frequency. [0003] Due to the existence of co-frequency cells, the terminal must eliminate co-frequency interference to ensure demodulation performance. At present, the base station configures the same-frequency cell list of the mobile terminal in each time slot by measuring and detecting the mobile terminal according to the signal power, a...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem in the related art that because the correlation of the cells cannot be considered in configuring the same-frequency cell list and the cells with poor correlation affect the interference cancellation, the present invention proposes a method for selecting the same-frequency cells and a mobile terminal, which can Select the same-frequency cell for the terminal to avoid the problem of abnormal elimination of same-frequency interference

[0006] Aiming at the problem in the related art that the correlation of the cells cannot be considered in configuring the same-frequency cell list and the cells with poor correlation affect the interference cancellation, the present invention also proposes a mobile terminal for selecting the same-frequency cells, which can be based on the correlation of the cells. The terminal selects the same-frequency cell to avoid the problem of abnormal elimination of the same-frequency interference

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