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Method for inhibiting interference during identical networking by scheduling

A technology for interference suppression and co-frequency networking, applied in the field of co-frequency interference suppression in OFDM systems, and can solve problems such as co-frequency networking interference in wireless mobile communication systems

Inactive Publication Date: 2008-10-15
ZTE CORP
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  • Abstract
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  • Claims
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Problems solved by technology

[0012] The technical problem to be solved by the present invention is to provide a method for suppressing interference in same-frequency networking through scheduling, to solve how to improve the spectrum efficiency of wireless mobile communication systems in the prior art, and to solve the interference problems existing in same-frequency networking

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  • Method for inhibiting interference during identical networking by scheduling
  • Method for inhibiting interference during identical networking by scheduling
  • Method for inhibiting interference during identical networking by scheduling

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Embodiment Construction

[0035] First, the core of a method for suppressing interference in co-frequency networking through scheduling in the present invention is described: ① Each cell is classified or sorted according to the potential interference of users in the cell to other cells; ② Each cell is scheduled based on user classification or sorting , to achieve the purpose of suppressing or eliminating co-channel interference.

[0036] Second, specify the present invention:

[0037] (1) The interference suppression method described is applied to a wireless communication system, and specifically includes the following parts:

[0038] (1) At least two base stations, each base station sends control information (including scheduling information) within the corresponding cell range

[0039] (2) There is at least one terminal communicating with the cell base station in each cell

[0040] (3) The frequency deployment of two adjacent base stations is the same, and co-frequency interference exists between a...

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Abstract

The invention discloses a method for restraining the interferences of group networks with the same frequency by modulating. The method comprises the steps that potential interference conditions of each user in a local cell to other cells are obtained by each cell; ordering or classification is carried out to the users by each cell according to the potential interference conditions; modulation is carried out to each cell according to the ordering or the classification to crossly distribute the users with high potential interference conditions in the time-frequency resource space of the same system of the local cell and other cells. The method provided by the invention can effectively reduce the interference of the same frequency in a wireless communication system and improve frequency spectrum efficiency, thereby further increasing the coverage and the flow of the system.

Description

technical field [0001] The invention relates to a method for suppressing same-frequency interference in a wireless communication system, in particular to a method for suppressing same-frequency interference in an OFDM system. Background technique [0002] Interference in wireless and mobile communication systems mainly includes co-channel interference, adjacent frequency interference, out-of-band interference, and intermodulation interference. The co-frequency interference of the system means that some or all cells in the network use the same frequency point for data transmission, and there will be mutual signal interference between the cells. Co-channel interference can generally be divided into intra-cell interference, inter-cell interference, interference between different communication standards, interference between different operators, and interference caused by system equipment. [0003] Interference in the cell mainly includes multipath interference, near-far effect...

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Application Information

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IPC IPC(8): H04B7/208H04Q7/36H04B1/707H04B1/10H04W28/04H04W72/04H04W72/12
CPCH04W72/12
Inventor 蔡思东刘颖
Owner ZTE CORP
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