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Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system

A mobile communication system and interference cancellation technology, applied in the field of mobile communication systems, can solve problems such as base station interference, and achieve the effects of interference cancellation, interference elimination, and bandwidth efficiency improvement

Inactive Publication Date: 2005-08-31
PEKING UNIV
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for solving interference between base stations aiming at the problems existing in the existing mobile communication system

Method used

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  • Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system
  • Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system
  • Interference eliminating method between basic stations of mobile communication system and correspondent mobile communication system

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Embodiment Construction

[0025] (1) Base station system applying interference cancellation method

[0026] refer to figure 1 The application of interference canceller in base station system is introduced. The adjacent base stations (Node-B) in the system work in the same frequency band, and the same-frequency interference between base stations is eliminated by using the interference elimination method.

[0027] In each base station, a new interference cancellation module IBIC (Inter-Base InterferenceCancellation) is added. On the one hand, the interference cancellation module is responsible for transmitting the baseband data information transmitted by the local base station to its own base station manager through a wired link. The link receives the transmit baseband data information of the neighboring base stations transmitted by the base station manager. At the same time, within the interference elimination module, interference elimination of adjacent base stations is performed.

[0028]In each ba...

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Abstract

The present invention discloses a method for eliminating interference between base stations in the mobile communication system and its correspondent mobile communication system. The method includes the following steps: when the downward data is sent to any base station being in base station system, utilizing wired chain link to transfer the transmitted data information into adjacent base station; and when the up ward data is received, receiving and buffer storing wired chain link data information, according to said information producing wireless base band signals for interfering emission of base station, and utilizing these wireless base band signals and radio-demodulated antenna to receive total wireless base band signal, estimating channel parameter between every interference base station and local base station.

Description

technical field [0001] The invention belongs to the technical field of mobile communication systems, in particular to a method for eliminating interference between base stations and a corresponding mobile communication system. Background technique [0002] In a mobile communication system, the interference between base stations becomes a very serious interference, which seriously affects the capacity and bandwidth efficiency of the system. If the interference between base stations cannot be avoided or effectively eliminated, it will become the main factor limiting the system capacity and lead to a decrease in the bandwidth efficiency of the system. [0003] In order to overcome the influence of interference between base stations, the following methods are usually used in mobile communication systems: cell frequency division multiplexing (FDM), or fixed uplink and downlink time, or dynamically allocate uplink and downlink time according to interference conditions, etc. These...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04B1/707H04B7/26H04B15/00H04L25/03H04L25/08
Inventor 焦秉立孙贞昱
Owner PEKING UNIV
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