Method, device and system for adjusting coverage area of base station

Abstract

The invention provides a method, a device and a system for adjusting the coverage area of a base station. The method for adjusting the coverage area of the base station comprises the following steps of: acquiring a throughput rate of a sector; if the throughput rate of the sector is more than or equal to a heavy load threshold, acquiring a step value for adjusting downtilt or a transmitting power of an antenna of the sector according to signal quality data which is reported to the sector when a terminal switches the base state or according to a pre-stored reference data table; sending a first adjustment command which carries the step value to the base station to which the sector belongs, so that the base station can adjust the downtilt or the transmitting power of the antenna of the sector according to the step value after receiving the first adjustment command, and the coverage area of the base station is adjusted. By the method, the device and the system, the size of a coverage overlapping area of the base station and an adjacent base station is guaranteed, so that terminals which are positioned in the coverage overlapping area can enjoy normal voice service and data service, the phenomenon of unsuccessful switching or ping-pong switching is avoided, and the communication quality of the terminals in the coverage overlapping area is improved.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a method, device and system for adjusting base station coverage. Background technique [0002] Wideband Code Division Multiple Access (WCDMA) system is an interference-limited system, which has obvious breathing effect. This breathing effect is mainly reflected in the changing relationship between cell capacity and coverage. figure 1 It is a schematic diagram of base station coverage under different load conditions of UMTS network, such as figure 1 As shown, when the load of the cell increases, the capacity of the cell increases, and the interference margin required by the link increases, so that the coverage of the cell decreases accordingly; when the load of the cell decreases, the capacity of the cell It is also reduced accordingly, and the interference margin required by the link will also be reduced, so that the coverage of the cell becomes larger. Therefore, t...

AI Technical Summary

Problems solved by technology

[0004] However, the load of the base station changes dynamically, and the load of the base station shows irregular random changes in a day or a month

When the load of the cell is heavy, the coverage radius of the base station will be reduced. Correspondingly, if the coverage radius of adjacent base stations is reduced, there may be a discontinuous coverage area between the base stations, or the overlapping coverage area will be reduced, so that Terminals located in this overlapping area may experience call drop due to unsuccessful handover when conducting normal voice and data services

Images