Power control method

Abstract

The invention discloses a power control method. The method includes the following steps that: when judging that the intensity of the interference of a local cell on a neighboring cell is greater than a predetermined value, a base station determines that power control needs to be performed on user equipment (UE) in the local cell; the base station judges the interference sources of the local cell, when the base station judges that the interference sources of the local cell are only high-power users, the power control parameters k1 and b1 of the high-power user equipment are decreased according to a formula described in the descriptions of the invention, a reduced high-power user equipment target signal to interference plus noise power ratio SINRpusch-target can be obtained; and the base station decreases the uplink transmitting power of the high-power user equipment according to the reduced high-power user equipment target signal to interference plus noise power ratio and informs the high-power user equipment. With the power control method of the present invention adopted, power control can be performed on a high-power terminal when interference is severe.

Description

technical field [0001] The invention relates to the technology in the field of mobile communication, in particular to a power control method. Background technique [0002] Increasing the transmit power of the terminal can increase the coverage or increase the uplink rate at the edge of the cell. Such terminals are called high-power terminals. High-power terminals are used for high-volume application services, such as video uploads, etc., and can have more power reserves to ensure their transmission rates. Its application is very necessary in some industries. [0003] While high-power terminals enhance coverage and increase speed, it will also bring about problems such as increasing co-channel interference between cells in the LTE system. Especially in the mixed application scenario of high-power terminals and non-high-power terminals, the power of high-power terminals is increased by more than 10dB compared with non-high-power terminals. The surge of network interference n...

AI Technical Summary

Problems solved by technology

[0003] While high-power terminals enhance coverage and increase speed, it will also bring about problems such as increasing co-channel interference between cells in the LTE system

Especially in the mixed application scenario of high-power terminals and non-high-power terminals, the power of high-power terminals is increased by more than 10dB compared with non-high-power terminals. The surge of network interference will not only make the system performance drop rapidly, but also will inevitably lead to the deterioration of non-high power performance or even disconnection

[0004] The current power control method is aimed at the scenario where the maximum transmit power of users is the same. Through closed-loop power control, the target signal-to-interference and noise ratio (SINR) is adjusted according to the statistical characteristics of user power headroom, which can only distinguish the difference caused by different user locations (path loss). Influence, did not take into account the increase in interference caused by power increase

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