Method, device and system for power control

Abstract

The present application discloses a power control method, device, and system that enable multi-carrier systems to accurately assign serial numbers to shared channels, thereby enabling a corresponding power control. The method comprises: using TTI as a unit, a sending terminal cyclically assigns serial numbers to the shared channels carried on each of multiple carriers, sends the serial number of each shared channel via the multiple carriers to a receiving terminal, and instructs the receiving terminal to execute a corresponding power control on the basis of the continuity of the serial number of each shared channel. After receiving the serial number of each shared channel from the sending terminal, the receiving terminal, using TTI as the unit, gathers statistics on the block error rates of the multiple carriers on the basis of the serial number of each shared channel, and resets the target signal-to-noise ratio of the multiple carriers on the basis of the block error rates. As such, the multi-carrier system achieves accurate and effective outer loop power control, improving system performance. The present invention also discloses a corresponding power control device and power control system.

Description

technical field [0001] The present invention relates to the communication field, in particular to a power control method, device and system. Background technique [0002] Power control is a fundamental concept in cellular mobile communications. Since a Code Division Multiple Access (CDMA) system is an interference-limited system, it is very sensitive to changes in signal transmission power and channel characteristics. Therefore, in order to effectively control inter-user interference and improve power utilization, thereby improving the user capacity and call quality of the entire system, and further utilizing wireless resources more effectively, power control has become an indispensable and important means. [0003] Power control is divided into two categories: open-loop power control and closed-loop power control according to whether the mobile station and the base station participate at the same time. Closed-loop power control refers to the process in which the transmitt...

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