Semi-static frequency reuse method suitable for interference rejection in amorphous node network

An amorphous node and interference suppression technology, applied in network planning, wireless communication, electrical components, etc., to avoid interference, improve system capacity, and reduce system overhead

Active Publication Date: 2014-01-15
TSINGHUA UNIV
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Problems solved by technology

Amorphous nodes follow this setting to avoid interference between relay backhaul downlink and relay access downlink, but interference between DeNB downlink and amorphous node access link downlink cannot be avoided

Method used

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  • Semi-static frequency reuse method suitable for interference rejection in amorphous node network
  • Semi-static frequency reuse method suitable for interference rejection in amorphous node network

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Embodiment Construction

[0025] The semi-static frequency reuse method suitable for interference suppression in the amorphous node network proposed by the present invention, the schematic diagram of the interference scene between the amorphous node and the macro base station and between the amorphous nodes involved is as follows figure 1 As shown, the method includes the following steps:

[0026] (1) When the amorphous node 2 and the macro base station 1 in the amorphous node network use the same frequency band to serve user 3, the frequency in the amorphous node network is divided into two parts, respectively denoted as f 0 and f AN , where f 0 For the frequency used by the macro base station in the amorphous node network, f AN the frequency used for the access link of the amorphous node in the amorphous node network;

[0027] The frequency f used by the macro base station 0 into three non-overlapping parts f 1 , f 2 , f 3 ,Such as figure 2 As shown, using the soft frequency reuse method to ...

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Abstract

The invention relates to a semi-static frequency reuse method suitable for interference rejection in an amorphous node network and belongs to the technical field of wireless network communication. When interference on an amorphous node from other amorphous nodes is low, all non-reserved frequency is used for working, the amorphous nodes are in a first mode; when a plurality of amorphous nodes meet, the amorphous nodes are in a second mode, so that interference between the amorphous nodes is avoided. The working modes of the amorphous nodes are managed through the adjacent region lifts of the amorphous nodes, a macro base station distributes frequency for the amorphous nodes which are in mutual interference through interference lists, and accordingly interference between the amorphous nodes is avoided. The method can be used in a cell frequency distribution scheme of the amorphous node network and other dynamic changing structures, the problem of interference between low-speed or nomadicity moving cells in the amorphous node network is effectively solved, spectrum efficiency is improved, and meanwhile system expenditure is lowered, and system capacity is improved by avoiding interference.

Description

technical field [0001] The invention relates to a semi-static frequency multiplexing method suitable for interference suppression in an amorphous node network, in particular to a semi-static frequency multiplexing method related to relay enhancement or small cell enhanced cellular wireless system, which belongs to wireless network communication technology field. Background technique [0002] Due to the increasing demand of users for higher service quality and larger data volume, and the tidal phenomenon of traffic distribution caused by user mobility, the current network formed by fixed nodes will not be able to effectively meet the needs of business growth, while a large number of fixed Node deployment will be contrary to the purpose of green base station design for energy saving and emission reduction, which is currently attracting global attention. The concept of amorphous cells is proposed as a possible solution. By exploring the application of low-power mobile nodes an...

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Application Information

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IPC IPC(8): H04W16/10H04W16/14
Inventor 粟欣曾捷李泽娇张琛肖驰洋方娜燕
Owner TSINGHUA UNIV
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