Method, system and device for uplink power control

Abstract

The embodiments of the present invention relate to the technical field of wireless communication, and in particular, to a method, system and device for uplink power control, so as to solve the problem that in a CR system, since the wireless propagation environment changes greatly during the frequency switching process of the system, using The power control strategy of the traditional uplink power control method, as the power control strategy for adjusting the system, is prone to over-compensation or under-compensation of power control. The method of the embodiment of the present invention includes: after the operating frequency point changes, the base station determines power control correction information according to the changed operating frequency point; the base station sends the power control correction information to the user equipment for notifying the user equipment according to the power control correction information. The correction information is used to adjust the uplink transmit power. The embodiment of the present invention improves the accuracy and timeliness of power compensation when the wireless propagation environment of the system changes, and also improves the overall throughput of the system.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method, system and device for uplink power control. Background technique [0002] With the rapid development of mobile communication, the contradiction between the growing demand for broadband wireless communication and the limited spectrum resources is becoming increasingly obvious. In order to solve the problem of shortage of spectrum resources, a new radio technology—Cognitive Radio (CR) technology has been widely used s concern. Through cognitive radio technology, the radio system can adaptively adjust its working parameters according to its working environment to meet its own needs. However, since the spectrum usage of the unlicensed frequency band will continue to change, the available spectrum usage of the cognitive radio CR system will change with time and cell location. Based on the dynamic use of spectrum, the CR system must adjust the power c...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method, system and device for uplink power control to solve the problem of using the traditional uplink power control method due to relatively large changes in the wireless propagation environment during the frequency switching process of the system in the CR system. As the power control strategy of the adjustment system, it is easy to cause the problem of overcompensation or undercompensation of power control.

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