×

Mobile communication system comprising base stations each having omnidirectional antenna for reception of interference wave

  • US 5,548,807 A
  • Filed: 10/07/1994
  • Issued: 08/20/1996
  • Est. Priority Date: 10/07/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A mobile communication system comprising:

  • a plurality of base stations each having a plurality of sectors, each sector having an antenna and a plurality of communication channels previously allocated thereto; and

    a plurality of mobile stations each communicating with a neighboring base station through one of said communication channels;

    each base station further including,an omnidirectional receiving antenna other than said sector antennas, said omnidirectional receiving antenna configured to receive interference waves;

    a receiver coupled to said omnidirectional receiving antenna and configured to receive said interference waves through said omnidirectional receiving antenna on all communication channels previously allocated to said each base station in all directions to detect interference wave levels;

    sector receiving means for receiving a calling signal from one of said mobile stations through an antenna of one of said sectors to detect a carrier wave level for communication with said one of said mobile stations;

    estimating means for estimating a channel quality of each of unused communication channels of said communication channels previously allocated to said one of said sectors, based upon said detected interference wave levels and said detected carrier wave level; and

    channel designating means for designating one of said unused communication channels having an estimated channel quality satisfying a predetermined reference quality.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×