Interference eliminating system and interference eliminating method

Abstract

An interference elimination system is provided for eliminating from a first radio signal transmitted from a first radio terminal to a first radio base station, the effect of interference due to a second radio signal transmitted from a second radio terminal to a second radio base station. The second radio base station has an extractor for extracting the second radio signal from radio signals received in the second radio base station, and a transmitter for transmitting the extracted second radio signal to the first radio base station. The first radio base station has an interference eliminator for eliminating the second radio signal transmitted from the second radio base station from radio signals received in the first radio base station.

Description

technical field [0001] The present invention relates to an interference cancellation system and an interference cancellation method in which a radio base station of one radio communication system cancels interference from another radio communication system. Background technique [0002] This application is based on and claims priority from a prior Japanese Patent Application No. P2001-157165 filed on May 25, 2001; the entire contents of which are incorporated herein by reference. [0003] It is well known that a radio base station of one radiocommunication system and a radio base station of another radiocommunication system are often located at the same location or in close proximity for efficient use of land. In this case, the first radio base station receives radio signals of the radio terminals it manages and also receives radio signals of interfering radio terminals which are radio terminals of the second radio communication system. These radio communication systems use...

AI Technical Summary

Problems solved by technology

[0022] In the above interference cancellation system, the radio base station 21 must reproduce the radio signal S from the interfering radio terminal 10 1 , resulting in complicating the structure of the radio base station 21

[0023] When it is necessary to consider the influence of radio signal interference from different radio communication systems for the above-mentioned interference canceling system, the radio base station 21 must regenerate the radio signal from the interfering radio terminal of each different radio communication system, and as a result, the radio base station 21 The structure is complicated

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