Power control method base on set tactic

Abstract

The present invention discloses a power control method based on the group strategy, and belongs to the technical field of broadband wireless communication. With the control method of group strategy and the power adjustment algorithm based on the Doppler compensation, the base station judges the moving velocity, position information and operating state according to the signal intensity of the user terminal, and then inserts the users with the same adjusted value of power into one group, according to the calculation of the channel state and the adjusted power of Doppler compensation. When the uplink sub-frame is completed, the information of each group is respectively written into the management information; then the user terminals are informed through centralized broadcast so as to realize the power control. The power control method can effectively reduce the operating expense of communication system, in particular on such occasions as the high-speed train or underground railway of higher operating speed, more carrying users and higher traffic intensity and in the environment requiring more frequent power control. The effects of the power control method are more obvious, and the whole performance of the system is greatly improved.

Description

technical field [0001] The invention relates to a group policy-based power control method, belongs to the technical field of broadband wireless communication, is mainly applicable to OFDM systems, and is especially suitable for power control in a multi-cell multi-user environment in a high-speed mobile environment. Background technique [0002] With the continuous development of wireless communication technology, people spend more and more time using mobile communication. In the energy-constrained communication environment, how to save the battery of the mobile terminal and improve its battery life has been paid attention to and researched by people. As a widely used method, power control can not only reduce the transmit power of the mobile terminal, but also reduce the mutual interference between system users by reducing the power, and improve the overall performance of the system. [0003] When the cell radius becomes smaller and the number of users increases, the process...

AI Technical Summary

Problems solved by technology

[0004] 1. When the mobile terminal is in a high-speed motion state, the inter-carrier interference increases correspondingly due to the increase in speed;

[0005] 2. In the same cell, the power control of multiple users with similar channel conditions and the same adjustment value must be completed independently, which directly increases the system overhead

Images