Interference coordination method for power adjustment of antenna beam in wireless communication system

Abstract

The present invention provides an interference coordination method for power adjustment of an antenna beam in a wireless communication system, comprising: step S1, a source base station where the beam is to be adjusted sends power adjustment information of the beam to a target base station which may be influenced; step S2, the target base station pre-estimates whether it can withstand interference after beam power adjustment of the source base station according to the interference from the beam to be adjusted it has undergone, or pre-estimates whether it can withstand interference after beam power adjustment of the source base station by transferring edge users adjacent to the source base station to the source base station and obtains pre-estimated results; step S3, the target base station negotiates with the source base station according to the estimated results so as to determine whether the source base station can perform beam adjustment. According to the invention, a balance point is quite quickly achieved between system resources and network load after the beam power adjustment; the system resources of the network can be reasonably used; and partial beam power adjustment would not cause sudden degradation of the performance of users of adjacent cells.

Description

technical field [0001] The invention relates to a wireless network system composed of active antenna-oriented base stations, in particular to an interference coordination method for antenna beam power adjustment in a wireless communication system. Background technique [0002] In the future mobile communication system, the sharp increase in the number of users will lead to a sharp increase in the user's communication traffic. Since the multi-antenna technology can obtain higher performance gain and frequency band utilization, it has become one of the important technical means to deal with the huge data traffic of the future mobile communication system. Multi-antenna technology requires a large number of antennas to be configured at the base station, and the traditional two-dimensional active antenna (2D) configuration can no longer meet the needs of users, so the introduction of the three-dimensional active antenna (3D) array antenna design needs. At present, 3GPP LTE-A ha...

AI Technical Summary

Problems solved by technology

Then, in the 3D active antenna base station network, the downtilt angle of the base station beam needs to adapt to the change of the vertical dimension height of the user service in the cell, which leads to the small downtilt angle (the angle between the horizontal line) of some base station beams, The power change of this beam will lead to large changes in the interference area and interference intensity of adjacent cells

[0008] For the three-dimensional active antenna base station networking, the current domestic and foreign research focuses on the large-scale and small-scale modeling of the three-dimensional wireless channel, and there is no literature and existing technology related to how to coordinate the dynamic adjustment of the beam between the base stations

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