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1. (WO2011160375) SYSTEM, APPARATUS AND METHOD FOR ADJUSTING CELL COVERAGE AREA BY USING ANTENNAE

Pub. No.:    WO/2011/160375    International Application No.:    PCT/CN2010/078087
Publication Date: Dec 29, 2011 International Filing Date: Oct 25, 2010
IPC: H04W 16/28
Applicants: ZTE CORPORATION
中兴通讯股份有限公司
WANG, Bo
王博
Inventors: WANG, Bo
王博
Title: SYSTEM, APPARATUS AND METHOD FOR ADJUSTING CELL COVERAGE AREA BY USING ANTENNAE
Abstract:
A system, apparatus and method for adjusting cell coverage area by using antennae are disclosed in the present invention. The system includes electrical tilt antennae, a Base Band Unit (BBU) and Remote Radio Units (RRUs) in a base station apparatus, and at least one of the RRUs is used as the RRU of a Central Control Unit (CCU), wherein the BBU monitors parameters reflecting the load status of a cell in real time, and if the monitored parameters exceed predefined critical values, then calculates and obtains the obliquity at the next time of the antenna corresponding to the cell, and forms an antenna instruction which is sent to the corresponding electrical tilt antenna through the RRU used as the CCU; the electrical tilt antenna adjusts the obliquity of the antenna according to the received antenna instruction. The present invention adaptively adjusts the antenna obliquity by monitoring the cell parameters, and thus the response to the change of the cell load status is sensitive, and the adjustment of the antenna obliquity is more exact.