Invention Grant
- Patent Title: Antenna apparatus for base station and method of optimizing traffic capacity in CDMA communications system
- Patent Title (中): 基站天线装置及CDMA通信系统中优化通信量的方法
-
Application No.: US10365486Application Date: 2003-02-13
-
Publication No.: US07149548B2Publication Date: 2006-12-12
- Inventor: Shinichi Mori , Tetsuro Imai
- Applicant: Shinichi Mori , Tetsuro Imai
- Applicant Address: JP Tokyo
- Assignee: NTT DoCoMo, Inc.
- Current Assignee: NTT DoCoMo, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
- Priority: JP2002-037296 20020214
- Main IPC: H04M1/00
- IPC: H04M1/00
Abstract:
An antenna apparatus is installed in a base station in a code division multiple access communication system. The antenna apparatus comprises a plurality of antenna elements, each receiving a radio signal; a controller that produces an antenna control signal based on information contained in the radio signal received at each of the antenna elements; an adjusting unit that adjusts directivity characteristics of each of the antenna elements based on the antenna control signal; and an allocating unit that allocates the antenna elements to sectors based on the antenna control signal. The sector covers a portion of a cell controlled by the base station, and the number of sectors in the cell is variable by means of the antenna control signal.
Public/Granted literature
Information query
