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Method for suppressing interference of wireless communication system

A wireless communication system and interference suppression technology, applied in the field of LTE system, to achieve the effect of reducing interference and reducing energy consumption

Inactive Publication Date: 2012-06-13
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, at present, SON cannot well solve the problem of downlink interference between adjacent cells that allow handover, so it is urgent to propose a method to suppress downlink interference between adjacent cells

Method used

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  • Method for suppressing interference of wireless communication system
  • Method for suppressing interference of wireless communication system
  • Method for suppressing interference of wireless communication system

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Experimental program
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Embodiment Construction

[0030] The main idea of ​​the present invention is that the technical means of shutting down eNodeBs without resident users can be used to reduce the downlink interference between adjacent cells. At the same time, considering that simply shutting down eNodeBs will cause network holes, it is necessary to further consider the The attributes of the cell under the jurisdiction of the eNodeB (such as the speed attribute of the cell, etc.), the load capacity of the cell, and the relationship between the cell and the neighboring cells that allow handover, among which the speed attribute of the cell is related to the specific configuration of the cell, and the specific configuration includes The CP (cyclic prefix) mode adopted by the wireless channel, the mapping method of uplink and downlink resources, and the transmission power of the cell, etc., for example, can judge the speed attribute of the cell according to the CP of the wireless channel. Generally, non-high-speed cells use gene...

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Abstract

The invention discloses a method for suppressing the interference of a wireless communication system, and relates to an LTE system. The method comprises the following steps that: a base station or a base station controller judges whether the number of resident users in an affiliated cell thereof is 0 or not, and if so, closing a function unit accordingly managing the cell in the base station whenthe cell meets at least one of the following conditions that: (1) the cell is a non-high speed cell; (2) the cell is a non-track area (TA) boundary cell; (3) the load capacity of a same-coverage cellof the cell is not more than a set threshold; and (4) an adjacent cell of the cell which is allowed to switch has no potential mobility, wherein the potential mobility means the possibility that all users in the adjacent cell switch to the cell. The method decreases the interference of a downlink channel between adjacent cells, closes part of eNode B, and lowers the energy consumption of base station devices.

Description

technical field [0001] The present invention relates to an LTE (Long Term Evolution, long-term evolution project) system, in particular to an interference suppression method for a wireless communication system. Background technique [0002] In the 3GPP LTE project, the concept of SON (Self-Organizing Networks, self-organizing network) is introduced. Through self configuration (Self Configuration) and self optimization (Self Optimization) of the network, the complexity of network operation is reduced, and the operability and operation effect of the network are improved. [0003] Specifically, the functions of SON include: [0004] Self-Establishment: eNodeB (Evolved Node B, Evolved Node B) plug-and-play, automatic software installation, automatic configuration of wireless parameters and transmission parameters, automatic detection, and automatic management of adjacency relationships, etc. This topic is what everyone is most concerned about. The list of requirements, use cas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W88/08H04B7/26
CPCY02B60/50Y02D30/70
Inventor 徐云翔
Owner ZTE CORP