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RADIO COMMUNICATION SYSTEM, CENTRALIZED STATION, CONTROL STATION APPARATUS, RADIO BASE STATION AND COORDINATED TRANSMISSION METHOD

  • US 20120026956A1
  • Filed: 07/27/2011
  • Published: 02/02/2012
  • Est. Priority Date: 07/28/2010
  • Status: Active Grant
First Claim
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1. A radio communication system provided with a plurality of radio base stations each forming a cell with a plurality of sectors, comprising:

  • a cluster pattern determining section configured to determine the assignment of each cluster pattern to each cluster so as to suppress inter-cluster interference less than or equal to a predetermined value, the cluster pattern is defining a directional pattern of which directional beams emitted from the respective radio base stations face each other for each identical frequency block between neighboring sectors in a cluster composed of neighboring cells, the each cluster pattern being in different combinations of directional patterns and frequency blocks; and

    a directional pattern determining section configured to assign directional patterns to the plurality of radio base stations in cluster units for each frequency block based on the cluster pattern determined by the cluster pattern determining section, wherein;

    the plurality of radio base stations form directional beams according to the directional pattern in the same time slot and coordinate data transmission between sectors through multiuser MIMO transmission between directional beams of one radio base station and the other radio base station having sectors adjacent to each other in a cluster and facing each other at the same frequency block.

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